Patent application number | Description | Published |
20090034465 | METHOD AND SYSTEM FOR DIMENSIONING SCHEDULING ASSIGNMENTS IN A COMMUNICATION SYSTEM - A system and method for performing Scheduling Assignments (SAs) for User Equipments (UEs) at a base station of a communication system by accounting for the different operating conditions UEs may experience or for the different data rates or data packet sizes UEs may require. This reduces a total size of SAs by introducing compact SAs, in addition to full SAs. For compact SAs, the range for the resource allocation or for the spectral efficiency of the signal transmission is restricted or some fields that exist in the full SA are eliminated without adversely impacting scheduling flexibility or system throughput. By reducing the total size of SAs through the use of compact SAs, the corresponding control signaling overhead is reduced, which improves system throughput, improves scheduling flexibility, or improves coverage. | 02-05-2009 |
20090034505 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DIFFERENT SIGNAL TYPES IN COMMUNICATION SYSTEMS - A method and apparatus for multiplexing a reference signal from a User Equipment (UE), not having any other signal transmission in the respective Transmission Time Interval (TTI), with a reference signal from another UE also having data transmission in the respective TTI, or with the control signal and reference signal from another UE transmitted in the respective TTI. The multiplexed reference signal from the UE not having any other signal transmission in the respective TTI can serve as a sounding reference signal to enable the serving base station to apply link adaptation to a subsequent signal transmitted by the UE or it can serve as a reference signal conveying state information, such as resource request or service request. | 02-05-2009 |
20090046646 | APPARATUS AND METHOD FOR ALLOCATING CODE RESOURCES TO UPLINK ACK/NACK CHANNELS IN A CELLULAR WIRELESS COMMUNICATION SYSTEM - A method and apparatus are provided for allocating code resources to ACK/NACK channel indexes, when UEs need ACK/NACK transmission in a wireless communication system in which a predetermined number of orthogonal cover Walsh codes is selected from among available orthogonal cover Walsh codes, at least one subset is formed, having the selected orthogonal cover Walsh codes arranged in an ascending order of cross interference, subsets are selected for use in first and second slots of a subframe, and the orthogonal cover Walsh codes of the subset selected for each slot and ZC sequence cyclic shift values are allocated to the ACK/NACK channel indexes. | 02-19-2009 |
20090060004 | SEQUENCE HOPPING IN SC-FDMA COMMUNICATION SYSTEMS - A method and apparatus are provided for the selection of sequences used for the transmission of signals from user equipments in a cellular communication system. The sequences can be selected either through planning or through pseudo-random hopping among a set of sequences. With planning, the serving Node B signals the sequence assignment for each cell, which remains invariable in time. With pseudo-random sequence hopping, which has the same pattern in all cells, the serving Node B signals the initial sequence, from a set of sequences, which can be different among cells. The signals can be transmitted either through a data channel or through a control channel. The initial sequence used in the control (or data) channel is signaled by the serving Node B. The initial sequence used in the data (or control) channel is selected to be the sequence in a set of sequences with number equal to a shift value relative to the first sequence as signaled by the serving Node B for the control (or data) channel. | 03-05-2009 |
20090092148 | RESOURCE REMAPPING AND REGROUPING IN A WIRELESS COMMUNICATION SYSTEM - Methods and apparatus for remapping and regrouping transmission resources in a wireless communication system. First, a set of new permutation algorithms based on Galois field operation is proposed. Then the proposed algorithms and the known Pruned Bit Reversal Ordering (PBRO) algorithm are applied to several of various resource mapping schemes, including slot or symbol level Orthogonal Cover (OC)/Cyclic Shift (CS) mapping, cell-specific slot-level and symbol-level CS hopping patterns, and subframe and slot level base sequence hopping patterns. | 04-09-2009 |
20090097457 | REPEATING TRANSMISSIONS OF SIGNALS IN COMMUNICATION SYSTEMS - Methods and apparatuses for a User Equipment (UE) to transmit an acknowledgement signal over multiple Transmission Time Intervals (TTIs). The acknowledgement signal is in response to a data packet reception and is transmitted in a different resource in each of the multiple TTIs, if the data packet reception is through a scheduling assignment, or is transmitted in the same resource in each of the multiple TTIs, if the data packet reception is periodic. The UE transmitting an acknowledgement signal over multiple TTIs should not transmit additional acknowledgement signals in subsequent TTIs before the initial acknowledgement signal transmission is completed. The UE should also not transmit data signals or other control signals in the same or subsequent TTIs before completing transmission of an acknowledgement signal over multiple TTIs. | 04-16-2009 |
20090232101 | CONTROL AND DATA MULTIPLEXING IN COMMUNICATION SYSTEMS - Apparatus and method for a base station to assign to a user equipment (UE) communicating with the base station a number of coded control information symbols being transmitted with coded data information symbols during the same transmission time interval by the UE. The method includes assigning, by the base station, an offset to the UE, assigning, by the base station, a Modulation and Coding Scheme for data information (data MCS) to the UE, transmitting the offset to the UE, and transmitting the data MCS to the UE, wherein the number of coded control information symbols assigned to the UE for transmission of control information is determined based on the data MCS and the offset. | 09-17-2009 |
20090245187 | Downlink phich mapping and channelization - Methods and apparatus for downlink Physical Hybrid Automatic Repeat-reQuest (HARQ) Indicator Channel (PHICH) mapping and channelization in a communication system. First, a base station assigns uplink (UL) physical resource block (PRB) indices to a set of units of user equipment in a cell. Then, for each user equipment, the base station calculates an index triple (K | 10-01-2009 |
20100039970 | METHOD AND APPARATUS FOR SUPPORTING MULTIPLE REFERENCE SIGNALS IN OFDMA COMMUNICATION SYSTEMS - Methods and apparatuses are described for a Node B to transmit Reference Signals (RS) from multiple antennas to enable User Equipments (UEs) to perform demodulation of received information signals and to estimate Channel Quality Indication (CQI) metrics. To minimize overhead and enable backward compatible operation with legacy systems, RS from a first set of Node B antennas are transmitted in every transmission time interval and substantially over the whole operating BandWidth (BW). RS from a second set of Node B antennas serving for CQI estimation are periodically transmitted, substantially over the whole operating BW, with transmission period informed to UEs through broadcast signaling by the Node B and starting transmission sub-frame determined from the identity of the cell served by the Node B. RS from the second set of antennas, and new RS from the first set of antennas, serving for demodulation of information signals have substantially the same BW as the information signals which can be smaller than the operating BW. | 02-18-2010 |
20100070815 | VIRTUAL EXTENSION OF CRC LENGTH - An apparatus and method for generating a Scheduling Assignment (SA), which reduces a probability of an incorrect action by a User Equipment (UE) in response to a reception of the SA, in a communication system wherein a base station transmits the SA being a first type or a second type and including at least one Information Element (IE). The method includes setting at least one bit in the at least one IE with an arbitrary value, if the SA is of the first type; setting the at least one bit in the at least one IE with a predetermined value, if the SA is of the second type; and setting any remaining bits in the at least one IE with arbitrary values. | 03-18-2010 |
20100074205 | TRANSMISSION OF SOUNDING REFERENCE SIGNALS IN TDD COMMUNICATION SYSTEMS - A method and apparatus for transmitting and receiving a Sounding Reference Signal (SRS) to a network in a communication system. A bandwidth allocated by the network to transmissions of one or more random access channels is determined. An SRS bandwidth configuration is reconfigured by setting a maximum bandwidth value of the SRS bandwidth configuration to a value that avoids overlapping the bandwidth allocated to transmissions of the one or more random access channels. The SRS is transmitted in accordance with a bandwidth from the reconfigured SRS bandwidth configuration. Information regarding the SRS bandwidth configuration is provided to a User Equipment (UE) by the network. | 03-25-2010 |
20100080187 | APPARATUS AND METHOD FOR SUPPORTING TRANSMISSION OF SOUNDING REFERENCE SIGNALS FROM MULTIPLE ANTENNAS - Methods and apparatuses, through the use of a Downlink Control Indication (DCI) format or through higher layer signaling, for dynamic activation and deactivation of Sounding Reference Signal (SRS) transmissions from User Equipments (UEs) in an UL Component Carrier (CC) with configured SRS transmissions, the dynamic configuration of SRS transmissions parameters, the dynamic activation and configuration of SRS transmissions in an UL CC without previously configured SRS transmissions for a reference UE, and the configuration of SRS transmissions from multiple UE transmitter antennas. | 04-01-2010 |
20100135237 | TRANSMISSION OF SCHEDULING ASSIGNMENTS IN MULTIPLE OPERATING BANDWIDTHS - Methods and apparatuses are described for the transmission of Scheduling Assignments (SAs) from a base station to User Equipments (UEs) for data reception in the downlink or data transmission in the uplink of a communication system consisting of multiple Component Carriers (CCs). The SAs are separately coded and transmitted using elementary units (Control Channel Elements or CCEs). Locations of CCEs determine whether an SA is intended for a first CC or for a second CC. Further, the location of CCEs for an SA intended for a first CC is used to determine locations of CCEs for an SA intended for a second CC. | 06-03-2010 |
20100195575 | TRANSMITTING UPLINK CONTROL INFORMATION OVER A DATA CHANNEL OR OVER A CONTROL CHANNEL - Methods and apparatus are described for a User Equipment (UE) to concurrently transmit Uplink Control Information (UCI) and data information to a Node B. The Node B can configure the UE whether to transmit UCI together with data information in a Physical Uplink Shared CHannel (PUSCH) or, separate from data information, in a Physical Uplink Control CHannel (PUCCH). The UE may also determine whether to transmit UCI together with data information in the PUSCH or, separate from data information, in the PUCCH based on criteria involving either a ratio of PUSCH resources for UCI transmission over the total PUSCH resources, a Modulation and Coding Scheme (MCS) for the data information, an absolute power difference between PUCCH and PUSCH transmissions, whether the PUSCH transmission uses frequency hopping, or whether spatial multiplexing is used for the data transmission. | 08-05-2010 |
20100195604 | CONTROL SIGNALING FOR TRANSMISSIONS OVER CONTIGUOUS AND NON-CONTIGUOUS FREQUENCY BANDS - Methods and apparatus are provided for constructing scheduling assignments for transmission, by a User Equipment (UE), of data signals over a single contiguous bandwidth and multiple non-contiguous clusters of contiguous bandwidth. The scheduling assignments for each transmission structure are designed to always result into the same maximum number of decoding operations the UE needs to perform to receive the scheduling assignments. The data signal transmission over the single contiguous bandwidth can be with or without frequency hopping and the data signal transmission over the multiple non-contiguous clusters of contiguous bandwidth may always be without frequency hopping. | 08-05-2010 |
20100208679 | TRANSMISSION OF ACKNOWLEDGEMENT SIGNALS - Methods are described for a Node B to transmit and for a User Equipment (UE) to receive ACKnowledgement (ACK) information associated with the use of Hybrid Automatic Repeat reQuest (HARQ), also known as HARQ-ACK signaling, in a communication system that includes multiple downlink component carriers or multiple uplink component carriers. An HARQ-ACK signal to a UE is in response to a data packet transmission from the UE and may consist of 2 information bits when the UE has 2 or more transmitter antennas. The HARQ-ACK signal is always located in the same downlink component carrier as the scheduling assignment resulting to the data packet transmission from the UE. | 08-19-2010 |
20100246463 | UPLINK TRANSMISSION POWER CONTROL IN MULTI-CARRIER COMMUNICATION SYSTEMS - In a communication system wherein a User Equipment (UE) transmits at least two data channels in at least two respective component carriers, a method and apparatus for reducing a transmission power allocated to each of the least two data channels relative to each of a respective nominal transmission power, when a total nominal transmission power for the at least two data channels exceeds a predetermined value are provided. The method includes reducing a transmission power of the first data channel by a first amount; and reducing a transmission power of the second data channel by a second amount, wherein the first amount and the second amount have different values. | 09-30-2010 |
20100272019 | MULTIPLEXING LARGE PAYLOADS OF CONTROL INFORMATION FROM USER EQUIPMENTS - Disclosed is multiplexing transmissions of Uplink Control Information (UCI) signals having variable payloads from User Equipments (UEs). The UCI transmission uses a first format type if its size is less than or equal to a predetermined values and it uses a second format type if its size is greater than a predetermined value. When the first format type is used the UE multiplexing is through a first method while when the second format type is used the UE multiplexing is through a second method which is different than the first method. The structure of the second format type is the same as the structure used for the transmission of data information by UEs. The UEs can also be grouped and UCI transmission can be triggered through the reception of control signaling addressing a group of UEs and indicating UCI transmission by a sub-group of UEs in the group of UEs. | 10-28-2010 |
20100278109 | MULTIPLEXING LARGE PAYLOADS OF CONTROL INFORMATION FROM USER EQUIPMENTS - Disclosed is multiplexing transmissions of Uplink Control Information (UCI) signals having variable payloads from User Equipments (UEs). The UCI transmission uses a first format type if its size is less than or equal to a predetermined values and it uses a second format type if its size is greater than a predetermined value. When the first format type is used the UE multiplexing is through a first method while when the second format type is used the UE multiplexing is through a second method which is different than the first method. The structure of the second format type is the same as the structure used for the transmission of data information by UEs. The UEs can also be grouped and UCI transmission can be triggered through the reception of control signaling addressing a group of UEs and indicating UCI transmission by a sub-group of UEs in the group of UEs. | 11-04-2010 |
20110038302 | METHOD AND APPARATUS FOR TRANSMITTING REFERENCE SIGNALS IN COMMUNICATION SYSTEMS - Methods and apparatus are described for a Relay Node (RN) that is transparent to User Equipments to transmit, together with a base station (Node B), Reference Signals (RS) to UEs, to receive RS from UEs, to perform transmissions of Transport Blocks (TBs) to the Node B or to UEs and receptions of TBs from the Node B or from UEs, where the transmissions of TBs from the RN are for retransmissions associated with a Hybrid Automatic Repeat reQuest (HARQ) process for the same TBs, and enabling the Node B to obtain control information signaled from UEs while signaling from the RN interferers with that signaling of control information. | 02-17-2011 |
20110075624 | EXTENDING PHYSICAL DOWNLINK CONTROL CHANNELS - Methods and apparatus for transmitting and receiving Downlink Control Information (DCI) in a single cell in order to support communication over multiple cells. The DCI is conveyed by DCI formats transmitted through Physical Downlink Control CHannels (PDCCHs) in a UE-Common Search Space (UE-CSS) and in a UE-Dedicated Search Space (UE-DSS). A distinct UE-DSS is defined in the single cell for each of the multiple cells. Each distinct UE-DSS has the same structure as a conventional UE-DSS and a location that is determined by the same parameters as the location of the conventional UE-DSS and by the respective cell identity (Cell_ID). | 03-31-2011 |
20110090825 | TRANSMISSION DIVERSITY AND MULTIPLEXING FOR HARQ-ACK SIGNALS IN COMMUNICATION SYSTEMS - A method and apparatus are described for a User Equipment (UE) to transmit in a control channel ACKnowledgement signals associated with a Hybrid Automatic Repeat reQuest process (HARQ-ACK signals) in response to receiving Transport Blocks (TBs) transmitted from a base station. The UE conveys the HARQ-ACK information by selecting one resource from multiple resources in the control channel and by selecting a constellation point of the modulation scheme for the HARQ-ACK signal. Transmission diversity is supported using different control channel resources that are already available to the UE without configuring additional resources. Design principles are described to optimally map the HARQ-ACK information to control channel resources and modulation constellation points for a Time Division Duplex (TDD) system and for a Frequency Division Duplex (FDD) system. | 04-21-2011 |
20110164489 | APPARATUS AND METHOD FOR ENHANCING FEATURES OF UPLINK REFERENCE SIGNALS - Methods and apparatuses for configuring and transmitting Reference Signals (RS) accompanying data signals from User Equipments (UEs), such that Sounding Reference Signals (SRS) are transmitted from some UEs over a part of a possible transmission bandwidth, with or without the use of SRS bandwidth hopping. | 07-07-2011 |
20110165906 | RESOURCE INDEXING FOR ACKNOWLEDGEMENT SIGNALS IN RESPONSE TO RECEPTIONS OF MULTIPLE ASSIGNMENTS - User Equipment (UE) transmits an acknowledgement signal in response to the reception of multiple Scheduling Assignments (SAs) transmitted by a base station. The SAs consist of Information Elements (IEs) including a Transmission Power Control (TPC) IE providing adjustments for the transmission power of the acknowledgement signal. The TPC IE in a first SA of the multiple SAs is used to provide the previous adjustments and the TPC IEs in the remaining of the multiple SAs are used to provide an indication of the resource used for the transmission of the acknowledgment signal. | 07-07-2011 |
20110171985 | APPARATUS AND METHOD FOR ENABLING LOW LATENCY TRANSMISSIONS IN THE UPLINK OF A COMMUNICATION SYSTEM - Methods and apparatus are provided for a User Equipment (UE) to transmit signals in response to the reception of a Downlink Control Information (DCI) format transmitted from a base station of a communication system. The DCI format may provide only the frequency resources for the transmission of signals by the UE, while other parameters associated with the transmission of signals by the UE may be either predetermined or known to the UE through other signaling from the base station. The frequency resources used for the transmission of signals by the UE may be a sub-set of the frequency resources indicated by the DCI format and the determination of this sub-set by the UE may be either deterministic or pseudo-random. | 07-14-2011 |
20110228863 | MULTIPLEXING CONTROL AND DATA INFORMATION FROM A USER EQUIPMENT IN A PHYSICAL DATA CHANNEL - Methods and apparatus are described for a User Equipment (UE) to transmit HARQ-ACK information in a Physical Uplink Shared CHannel (PUSCH) in response to a reception of at least one Transport Block (TB) when the UE is configured by a base station with multiple DownLink (DL) Component Carriers (CCs), for selecting a single PUSCH for transmitting of Uplink Control Information (UCI), when the UE has multiple PUSCH transmissions, for improving the reliability of the HARQ-ACK reception when it is encoded using a block code relative to when it is encoded using the repetition code, and for applying transmission diversity to the HARQ-ACK transmission in a PUSCH. | 09-22-2011 |
20110243039 | INDEXING RESOURCES FOR TRANSMISSION OF ACKNOWLEDGEMENT SIGNALS IN MULTI-CELL TDD COMMUNICATION SYSTEMS - Methods and apparatus are described for a User Equipment (UE) to determine a set of resources available for transmitting an acknowledgement signal in an UpLink (UL) Component Carrier (CC) in response to reception of multiple DownLink (DL) Scheduling Assignments (SAs) transmitted from a base station with each DL SA being associated with a respective DL CC. The UL CC and a first DL CC establish a communication link when the UE is configured for communication over a single UL CC and a single DL CC. | 10-06-2011 |
20110299500 | MULTIPLEXING CONTROL AND DATA INFORMATION FROM A USER EQUIPMENT IN MIMO TRANSMISSION MODE - A method and apparatus for multiplexing Uplink Control Information (UCI) with data information in a Physical Uplink Shared CHannel (PUSCH) transmitted over multiple spatial layers where aspects of the UCI multiplexing include the determination of the number of coded UCI symbols in each spatial layer when the data information is conveyed using multiple Transport Blocks (TBs), the determination of the number of coded UCI symbols in each spatial layer when the PUSCH conveys a single TB retransmission for a Hybrid Automatic Repeat reQuest (HARQ) process while the initial TB transmission for the same HARQ process was in a PUSCH conveying multiple TBs, and the determination of the modulation scheme for the coded UCI symbols. | 12-08-2011 |
20110305226 | RESOURCE REMAPPING AND REGROUPING IN A WIRELESS COMMUNICATION SYSTEM - Methods and apparatus for remapping and regrouping transmission resources in a wireless communication system. First, a set of new permutation algorithms based on Galois field operation is proposed. Then the proposed algorithms and the known Pruned Bit Reversal Ordering (PBRO) algorithm are applied to several of various resource mapping schemes, including slot or symbol level Orthogonal Cover (OC)/Cyclic Shift (CS) mapping, cell-specific slot-level and symbol-level CS hopping patterns, and subframe and slot level base sequence hopping patterns. | 12-15-2011 |
20120033587 | TRANSMISSION OF UPLINK CONTROL SIGNALS IN A COMMUNICATION SYSTEM - A method and apparatus of a User Equipment (UE) to simultaneously transmit information of a first type and information of a second type over a number of transmission symbols, the information of the first type and the information of the second type being respectively associated with a first Orthogonal Cover Code (OCC) and a second OCC, wherein a length of each OCC is equal to the number of transmission symbols. The method includes multiplying, at each transmission symbol, the information of the first type with a respective element of the first OCC to obtain a first output; multiplying, at each transmission symbol, the information of the second type with a respective element of the second OCC to obtain a second output; summing the first output and the second output to obtain a combined output; and transmitting the combined output. | 02-09-2012 |
20120033648 | MULTIPLEXING CONTROL AND DATA INFORMATION FROM A USER EQUIPMENT - Methods and apparatus are provided for a User Equipment to transmit acknowledgement information together with data information to a base station during a Transmission Time Interval. A number of nominal resources for the transmission of the first set of AIBs is compared to a number of resources available to the UE for transmission of the acknowledgement information. The first set of AIBs is transmitted if the number of nominal resources is less than or equal to the number of available resources. A second set of AIBs is selected from the first set of AIBs and bundling operations are performed over respective distinct subsets of AIBs in the second set of AIBs to obtain a third set of AIBs if the number of nominal resources is greater than the number of available resources. The third set of AIBs and a fourth set of AIBs are transmitted. | 02-09-2012 |
20120034927 | TRANSMISSIONOF HARQ CONTROL INFORMATION FROM A USER EQUIPMENT FOR DOWNLINK CARRIER AGGREGATION - Methods and apparatus are described for a User Equipment (UE) to transmit acknowledgement information together with data information in a Physical Uplink Shared CHannel (PUSCH) or separate from data information in a Physical Uplink Control CHannel (PUCCH). The HARQ-ACK payload for transmission in a PUSCH and the HARQ-ACK signal transmission power for transmission in a PUCCH are derived based on the existence and design of a Downlink Assignment Index (DAI) Information Element (IE) in the Downlink Control Information (DCI) formats scheduling receptions of data Transport Blocks (TBs) by the UE. | 02-09-2012 |
20120063400 | TRANSMISSION OF ACKNOWLEDGEMENT SIGNALS IN A COMMUNICATION SYSTEM - Methods and apparatus are described for a User Equipment (UE) to transmit a variable number of HARQ-ACK bits in response to the reception of Transport Blocks (TBs) in multiple DownLink (DL) Component Carriers (CCs). The resources for the transmission of an HARQ-ACK signal in response to the reception of TBs in each DL CC are determined from the resources used for the transmission of the respective Scheduling Assignment (SA) in that DL CC. In order to increase the multiplexing capacity of HARQ-ACK bits in a single HARQ-ACK signal, the UE may use more than one of the resources determined from the resources used for the transmission of the SA in each DL CC. The UE may also adapt the parameters for the transmission of HARQ-ACK bits depending on their number. | 03-15-2012 |
20120106407 | GENERATION OF HARQ-ACK INFORMATION AND POWER CONTROL OF HARQ-ACK SIGNALS IN TDD SYSTEMS WITH DOWNLINK OF CARRIER AGGREGATION - Methods and apparatus are provided for a User Equipment (UE) configured to have multiple cells in a DownLink (DL) of a Time Division Duplex (TDD) communication system so as to determine a power of an acknowledgement signal that the UE transmits in a control channel and to determine a number of acknowledgement information bits that the UE multiplexes with data information bits in a data channel. A transmission power of the control signal is determined based on DL Assignment Index (DAI) Information Elements (IEs) in DL Scheduling Assignments (SAs) that the UE detects through multiple transmission time intervals and through the multiple configured DL cells. The number of acknowledgement information bits in the data channel is determined based on a DAI IE of an UpLink (UL) SA associated with the transmission of the data channel. | 05-03-2012 |
20120106408 | METHOD AND APPARATUS FOR CODING OF HARQ-ACK TRANSMISSION IN TDD SYSTEMS WITH DOWNLINK CARRIER AGGREGATION - Methods and apparatus are provided for a User Equipment (UE) configured with multiple cells in a DownLink (DL) of a Time Division Duplex (TDD) communication system to determine the coding method for acknowledgement information bits as a function of their number, to apply bundling to the acknowledgement information bits when their number exceeds a first predetermined value, and to partition the acknowledgement information bits, possibly together with other control information bits, into two separate codewords when their total number exceeds a second predetermined value. | 05-03-2012 |
20120163365 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DIFFERENT SIGNAL TYPES IN COMMUNICATION SYSTEMS - A method and apparatus for multiplexing a reference signal from a User Equipment (UE), not having any other signal transmission in the respective Transmission Time Interval (TTI), with a reference signal from another UE also having data transmission in the respective TTI, or with the control signal and reference signal from another UE transmitted in the respective TTI. The multiplexed reference signal from the UE not having any other signal transmission in the respective TTI can serve as a sounding reference signal to enable the serving base station to apply link adaptation to a subsequent signal transmitted by the UE or it can serve as a reference signal conveying state information, such as resource request or service request. | 06-28-2012 |
20120176989 | CONTROL SIGNALING FOR TRANSMISSION OVER CONTIGUOUS AND NON-CONTIGUOUS FREQUENCY BANDS - Methods and apparatus are provided for constructing scheduling assignments for transmission, by a User Equipment (UE), of data signals over a single contiguous bandwidth and multiple non-contiguous clusters of contiguous bandwidth. The scheduling assignments for each transmission structure are designed to always result into the same maximum number of decoding operations the UE needs to perform to receive the scheduling assignments. The data signal transmission over the single contiguous bandwidth can be with or without frequency hopping and the data signal transmission over the multiple non-contiguous clusters of contiguous bandwidth may always be without frequency hopping. | 07-12-2012 |
20120207052 | CONTROL AND DATA MULTIPLEXING IN COMMUNICATION SYSTEMS - Methods and apparatus are provided for a base station to assign to a UE communicating with the base station a number of coded control information symbols being transmitted with coded data information symbols during a transmission time interval by the UE. At least one offset value is assigned to the UE. A size of data is assigned to the UE. The base station transmits information regarding the at least one offset value to the UE. The base station transmits information regarding the size of data to the UE. The number of coded control information symbols assigned to the UE for transmission of control information is determined based on the size of data and the at least one offset value. The control information includes at least one of CQI, ACK/NAK, PMI, and RI. | 08-16-2012 |
20120269103 | APPARATUS AND METHOD FOR TRANSMITTING ACKNOWLEDGEMENT INFORMATION IN A TDD COMMUNICATION SYSTEM - Methods and apparatus are described for a User Equipment (UE) configured with multiple cells in the downlink of a time division duplex communication system to transmit HARQ-ACK information in a Physical Uplink Shared CHannel (PUSCH), to map HARQ-ACK bits transmitted in a PUSCH to information regarding correct or incorrect detections of data transport blocks in different cells and different transmission time intervals, and to provide a same understanding with an intended reception point of the information represented by HARQ-ACK bits the UE transmits in a PUSCH. | 10-25-2012 |
20120269287 | APPARATUS FOR DIMENSIONING THE CONTROL CHANNEL FOR TRANSMISSION EFFICIENCY IN COMMUNICATIONS SYSTEMS - Embodiments of the invention provide methods for optimizing the spectral efficiency of control channel transmissions carrying scheduling assignments from a serving Node B to user equipments. This is accomplished by adjusting the control channel size between successive transmission time intervals according to the number of user equipments having scheduling assignments and possibly according to the modulation and coding scheme used for the transmission of each scheduling assignments. | 10-25-2012 |
20120281604 | TRANSMISSION OF SOUNDING REFERENCE SIGNALS FROM A USER EQUIPMENT IN RESPONSE TO MULTIPLE REQUESTS - Methods and apparatus are provided for a User Equipment (UE) to transmit a Sounding Reference Signal (SRS). A first Downlink Control Information (DCI) format with an aperiodic SRS request field indicating aperiodic SRS transmission with first values for aperiodic SRS transmission parameters, is received. A second DCI format with an aperiodic SRS request field indicating aperiodic SRS transmission with second values for the aperiodic SRS transmission parameters, is received. The first values for the aperiodic SRS transmission parameters are compared with the second values for the aperiodic SRS transmission parameters. An aperiodic SRS is transmitted when the first values are identical to the second values. Transmission of the aperiodic SRS is suspended when the first values are not identical to the second values. | 11-08-2012 |
20120320846 | EXTENSION OF PHYSICAL DOWNLINK CONTROL SIGNALING IN A COMMUNICATION SYSTEM - Methods and apparatus are provided for a User Equipment (UE) to receive over a first set of resources a Physical Downlink Control CHannel (PDCCH) of a first type including Control Channel Elements (CCEs) of a first type, to receive over a second set of resources a PDCCH of a second type including CCEs of a second type, and to determine a resource for transmitting an acknowledgement signal in response to detecting the PDCCH of the first type or in response to detecting the PDCCH of the second type. | 12-20-2012 |
20130039299 | EXTENSION OF PHYSICAL DOWNLINK CONTROL CHANNELS IN A COMMUNICATION SYSTEM - Methods and apparatuses are described for a User Equipment (UE) to receive enhanced Control CHannels (eCCHs), including enhanced Physical Downlink Control CHannels (ePDCCHs), transmitted in a set of Resource Blocks (RBs) over a Transmission Time Interval (TTI). A method includes transmitting a first control signal to a first UE over a first number of Resource Elements (Res) in a subset of the RBs and over a first number of the transmission symbols in the TTI; transmitting a second control signal to a second UE over a second number of the REs in the subset of the RBs and over a second number of the transmission symbols in the TTI; and transmitting a reference signal of the first type over a third number of the REs in the subset of the RBs and over a third number of the transmission symbols in the TTI. | 02-14-2013 |
20130044581 | APPARATUS AND METHOD FOR ALLOCATING CODE RESOURCES TO UPLINK ACK/NACK CHANNELS IN A CELLULAR WIRELESS COMMUNICATION SYSTEM - A method and apparatus are provided for allocating code resources to ACK/NACK channel indexes, when UEs need ACK/NACK transmission in a wireless communication system in which a predetermined number of orthogonal cover Walsh codes is selected from among available orthogonal cover Walsh codes, at least one subset is formed, having the selected orthogonal cover Walsh codes arranged in an ascending order of cross interference, subsets are selected for use in first and second slots of a subframe, and the orthogonal cover Walsh codes of the subset selected for each slot and ZC sequence cyclic shift values are allocated to the ACK/NACK channel indexes. | 02-21-2013 |
20130077571 | METHOD AND APPARATUS FOR TRANSMISSION POWER CONTROL FOR A SOUNDING REFERENCE SIGNAL - A method and apparatus for transmitting a reference signal from a User Equipment (UE) are provided. The method includes transmitting a first reference signal using a sequence determined from an identity of the at least one transmission point and transmitting a second reference signal with a transmission power having an offset with a first maximum value configured by higher layer signaling from the at least one transmission point; and transmitting a first reference signal using a sequence configured to the UE by higher layer signaling from the at least one transmission point and transmitting a second reference signal with a transmission power having an offset with a second maximum value configured by higher layer signaling from the at least one transmission point, wherein the second maximum value is larger than the first maximum value, and the first reference signal and the second reference signal are either identical or non-identical. | 03-28-2013 |
20130083751 | TRANSMISSION POWER CONTROL FOR A SOUNDING REFERENCE SIGNAL - Method and apparatus for a User Equipment (UE) determining a resource for a transmission of a control signal in response to a detected control channel including Control Channel Elements (CCEs), where transmission of the control signal is with a first sequence or with a second sequence, if a first resource or a second resource is used, respectively. The first resource is determined from the CCE index while the second resource is determined from a group of consecutive CCE indexes. The UE is also signaled a bit-map associating the subframe of the control channel detection with the use of a first resource or of a second resource. | 04-04-2013 |
20130107822 | SEARCH PROCESS FOR PHYSICAL DOWNLINK CONTROL CHANNELS IN A COMMUNICATION SYSTEM | 05-02-2013 |
20130155974 | COMMUNICATION SUPPORT FOR LOW CAPABILITY DEVICES - Methods and apparatuses for transmitting and receiving signaling, by a User Equipment (UE) with reduced processing capabilities, to conserve power are provided. A method for transmitting from a network a Physical Downlink Shared CHannel (PDSCH) to a first User Equipment (UE) from a first class of UEs or to a second UE from a second class of UEs, includes transmitting a PDSCH to the first UE using a first bandwidth unit; and transmitting a PDSCH to the second UE using a second bandwidth unit, wherein the second bandwidth unit is smaller than the first bandwidth unit. | 06-20-2013 |
20130163506 | METHOD AND APPARATUS FOR TRANSMITTING REFERENCE SIGNALS IN COMMUNICATION SYSTEMS - Methods and apparatus are described for a Relay Node (RN) that is transparent to User Equipments to transmit, together with a base station (Node B), Reference Signals (RS) to UEs, to receive RS from UEs, to perform transmissions of Transport Blocks (TBs) to the Node B or to UEs and receptions of TBs from the Node B or from UEs, where the transmissions of TBs from the RN are for retransmissions associated with a Hybrid Automatic Repeat reQuest (HARD) process for the same TBs, and enabling the Node B to obtain control information signaled from UEs while signaling from the RN interferers with that signaling of control information. | 06-27-2013 |
20130195041 | METHOD AND APPARATUS FOR SCHEDULING COMMUNICATION FOR LOW CAPABILITY DEVICES - Methods and apparatus are described for a User Equipment (UE) with reduced processing capabilities (e.g., Machine Type Communication (MTC) UE) to transmit and receive signaling are provided. The Downlink Control Information (DCI) formats scheduling a transmission of a Physical Uplink Shared CHannel (PUSCH) or a reception of a Physical Downlink Shared CHannel (PDSCH) are designed and have a smaller size than respective DCI formats for conventional UEs. DCI formats scheduling PUSCHs to or PDSCHs for a group of MTC UEs are also designed and can have a same size as DCI formats scheduling PUSCH or PDSCH for an individual MTC UE. | 08-01-2013 |
20130195045 | REPORTING OF MULTIPLE PROCESSES FOR APERIODIC CHANNEL STATE INFORMATION - A method and an apparatus for transmitting Channel State Information (CSI) having a reporting mode and being transmitted from a User Equipment (UE) over a PUSCH transmission in an Uplink (UL) cell associated with a Downlink (DL) cell in response to the UE receiving a Downlink Control Information (DCI) format that includes a CSI request field indicating CSI transmission corresponding to one of CSI process sets associated with measurements of respective reference signals are provided. The method includes obtaining, from the CSI request field, an indication of a CSI process set for a CSI transmission; and transmitting the CSI for the CSI process set indicated by the CSI request field, wherein the CSI request field includes 2 bits of a first CSI process set having a first set of interpretations. | 08-01-2013 |
20130223389 | METHOD AND APPARATUS FOR SEQUENCE HOPPING IN SINGLE CARRIER FREQUENCY DIVISION MULTIPLE ACCESS (SC-FDMA) COMMUNICATION SYSTEMS - Methods and apparatus are provided for transmitting a reference-signal and a data signal by a user equipment in a communication system. The data signal is generated. A sequence is determined for the reference-signal. The reference-signal is transmitted based on the sequence and the data signal through at least one resource block. The sequence is determined based on sequence-hopping if the number of resource blocks is equal to or greater than the predetermined value. The sequence is determined without sequence-hopping if the number of resource blocks is less than a predetermined value. | 08-29-2013 |
20130230017 | HARQ-ACK SIGNAL TRANSMISSION IN RESPONSE TO DETECTION OF CONTROL CHANNEL TYPE IN CASE OF MULTIPLE CONTROL CHANNEL TYPES - Methods and apparatus are described for a User Equipment (UE) to transmit and for a base station to receive a Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK) signal in a resource of a Physical Uplink Control CHannel (PUCCH). The HARQ-ACK signal is transmitted from the UE in response to a detection of a PDCCH transmitted from the base station and conveying a DCI format that, depending on the PDCCH type, can include a HARQ-ACK PUCCH Resource Offset (HPRO) information field. The UE and the NodeB determine the PUCCH resource depending on the PDCCH type and, if the DCI format includes the HPRO, also depending on a PDCCH transmission type. | 09-05-2013 |
20130230029 | HARQ-ACK SIGNAL TRANSMISSION IN RESPONSE TO DETECTION OF CONTROL CHANNEL TYPE IN CASE OF MULTIPLE CONTROL CHANNEL TYPES - Methods and apparatus are described for a User Equipment (UE) to transmit and for a base station to receive a Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK) signal in a resource of a Physical Uplink Control CHannel (PUCCH). The HARQ-ACK signal is transmitted from the UE in response to a detection of a PDCCH transmitted from the base station and conveying a DCI format that, depending on the PDCCH type, can include a HARQ-ACK PUCCH Resource Offset (HPRO) information field. The UE and the NodeB determine the PUCCH resource depending on the PDCCH type and, if the DCI format includes the HPRO, also depending on a PDCCH transmission type. | 09-05-2013 |
20130230030 | HARQ-ACK SIGNAL TRANSMISSION IN RESPONSE TO DETECTION OF CONTROL CHANNEL TYPE IN CASE OF MULTIPLE CONTROL CHANNEL TYPES - Methods and apparatus are described for a User Equipment (UE) to transmit and for a base station to receive a Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK) signal in a resource of a Physical Uplink Control CHannel (PUCCH). The HARQ-ACK signal is transmitted from the UE in response to a detection of a PDCCH transmitted from the base station and conveying a DCI format that, depending on the PDCCH type, can include a HARQ-ACK PUCCH Resource Offset (HPRO) information field. The UE and the NodeB determine the PUCCH resource depending on the PDCCH type and, if the DCI format includes the HPRO, also depending on a PDCCH transmission type. | 09-05-2013 |
20130265970 | REPEATING TRANSMISSIONS OF SIGNALS IN COMMUNICATION SYSTEMS - Methods and apparatuses are provided for a User Equipment (UE) to transmit an acknowledgement signal over multiple Transmission Time Intervals (TTIs). The method includes transmitting the acknowledgement signal in {(n+Q) | 10-10-2013 |
20130294366 | REFERENCE SIGNALS AND COMMON SEARCH SPACE FOR ENHANCED CONTROL CHANNELS - Methods and apparatuses for a User Equipment (UE) to receive signaling of UE-common Downlink Control Information (DCI) in a set of Physical Resource Blocks (PRBs) over a Transmission Time Interval (TTI) are provided. The UE demodulates UE-common DCI using a Reference Signal (RS) that is scrambled by a UE-common scrambling sequence. The UE may assume that RS having a same precoding is transmitted in the set of PRBs over different TTIs. The UE may determine the scrambling sequence implicitly from an identity of a point transmitting the UE-common DCI or explicitly by higher layer signaling. The UE may determine the PRBs of UE-common DCI transmission by broadcast signaling or by higher layer signaling. | 11-07-2013 |
20130315180 | GENERATION OF HARQ-ACK INFORMATION AND POWER CONTROL OF HARQ-ACK SIGNALS IN TDD SYSTEMS WITH DOWNLINK OF CARRIER AGGREGATION - Methods and apparatus are provided for a User Equipment (UE) configured to have multiple cells in a DownLink (DL) of a Time Division Duplex (TDD) communication system so as to determine a power of an acknowledgement signal that the UE transmits in a control channel and to determine a number of acknowledgement information bits that the UE multiplexes with data information bits in a data channel. A transmission power of the control signal is determined based on DL Assignment Index (DAI) Information Elements (IEs) in DL Scheduling Assignments (SAs) that the UE detects through multiple transmission time intervals and through the multiple configured DL cells. The number of acknowledgement information bits in the data channel is determined based on a DAI IE of an UpLink (UL) SA associated with the transmission of the data channel. | 11-28-2013 |
20130343334 | APPARATUS AND METHOD FOR ENHANCING FEATURES OF UPLINK REFERENCE SIGNALS - An apparatus and method are provided for transmitting a PUSCH and a DM RS associated with transmission of the PUSCH. The method includes receiving, by a UE, a DCI format including IEs over PDCCHs based on a UE ID, where the IEs include RA and RSC information indicating a combination of a CS and an OCC for the DM RS; identifying the CS and the OCC for the DM RS using the RSC information; acquiring a DM RS sequence based on the identified CS, the identified OCC, and a CAZAC-based sequence; mapping the DM RS sequence to sub-carriers, based on the RA; performing an IFT operation based on the DM RS sequence and the sub-carriers; generating a signal for transmitting on the PUSCH by adding a CP to a result of the IFT operation; and transmitting the signal on the PUSCH. | 12-26-2013 |
20130343335 | TRANSMISSION OF ACKNOWLEDGEMENT SIGNALS - Methods are described for a Node B to transmit and for a User Equipment (UE) to receive ACKnowledgement (ACK) information associated with the use of Hybrid Automatic Repeat reQuest (HARM), also known as HARQ-ACK signaling, in a communication system that includes multiple downlink component carriers or multiple uplink component carriers. An HARQ-ACK signal to a UE is in response to a data packet transmission from the UE and may consist of 2 information bits when the UE has 2 or more transmitter antennas. The HARQ-ACK signal is always located in the same downlink component carrier as the scheduling assignment resulting to the data packet transmission from the UE. | 12-26-2013 |
20140010193 | RESOURCE INDEXING FOR ACKNOWLEDGEMENT SIGNALS IN RESPONSE TO RECEPTIONS OF MULTIPLE ASSIGNMENTS - User Equipment (UE) transmits an acknowledgement signal in response to the reception of multiple Scheduling Assignments (SAs) transmitted by a base station. The SAs consist of Information Elements (IEs) including a Transmission Power Control (TPC) IE providing adjustments for the transmission power of the acknowledgement signal. The TPC IE in a first SA of the multiple SAs is used to provide the previous adjustments and the TPC IEs in the remaining of the multiple SAs are used to provide an indication of the resource used for the transmission of the acknowledgment signal. | 01-09-2014 |
20140016602 | APPARATUS AND METHOD FOR SUPPORTING TRANSMISSION OF SOUNDING REFERENCE SIGNALS FROM MULTIPLE ANTENNAS - Methods and apparatuses, through the use of a Downlink Control Indication (DCI) format or through higher layer signaling, for dynamic activation and deactivation of Sounding Reference Signal (SRS) transmissions from User Equipments (UEs) in an UL Component Carrier (CC) with configured SRS transmissions, the dynamic configuration of SRS transmissions parameters, the dynamic activation and configuration of SRS transmissions in an UL CC without previously configured SRS transmissions for a reference UE, and the configuration of SRS transmissions from multiple UE transmitter antennas. | 01-16-2014 |
20140036828 | EXTENDING PHYSICAL DOWNLINK CONTROL CHANNELS - Methods and apparatuses for transmitting and receiving at least one Downlink Control Information (DCI) in a communication system supporting Carrier Aggregation (CA) are provided. The method for receiving includes receiving information representative of presence of carrier indicator by higher layer signaling from a Node B; receiving information representative of at least one cell indicator by higher layer signaling from the Node B; defining an UE specific search space based on aggregation level, an UE ID, and at least one carrier indicator value, where the UE specific search space includes a set of Physical Downlink Control CHannel (PDCCH) candidates based on the aggregation level; decoding at least one PDCCH including at least one DCI respectively by the UE ID; and acquiring the at least one DCI, wherein the at least one carrier indicator value is based on the at least one cell indicator. | 02-06-2014 |
20140056187 | METHOD AND APPARATUS FOR CODING OF HARQ-ACK TRANSMISSION IN TDD SYSTEMS WITH DOWNLINK CARRIER AGGREGATION - Methods and apparatus are provided for a User Equipment (UE) configured with multiple cells in a DownLink (DL) of a Time Division Duplex (TDD) communication system to determine the coding method for acknowledgement information bits as a function of their number, to apply bundling to the acknowledgement information bits when their number exceeds a first predetermined value, and to partition the acknowledgement information bits, possibly together with other control information bits, into two separate codewords when their total number exceeds a second predetermined value. | 02-27-2014 |
20140064214 | ADAPTING A NUMBER OF AGGREGATION LEVELS FOR CONTROL CHANNEL ELEMENTS - Methods and apparatus are described for a base station to transmit and for a User Equipment (UE) to detect a Physical Downlink Control CHannel (PDCCH) conveying a Downlink Control Information (DCI) format scheduling data reception or data transmission by the UE. The base station transmits a PDCCH and the UE decodes candidate PDCCHs using a number of Control Channel Elements (CCEs) from a first set of CCEs for a first DCI format and using a number of CCEs from a second set of CCEs for a second DCI format depending on a maximum code rate for the DCI format transmission or on a scheduling bandwidth. | 03-06-2014 |
20140064242 | MULTIPLEXING CONTROL AND DATA INFORMATION FROM A USER EQUIPMENT IN MIMO TRANSMISSION MODE - A method and apparatus are provided for multiplexing Uplink Control Information (UCI) with data information in a Physical Uplink Shared CHannel (PUSCH) transmitted over multiple spatial layers where aspects of the UCI multiplexing include the determination of the number of coded UCI symbols in each spatial layer when the data information is conveyed using multiple Transport Blocks (TBs), the determination of the number of coded UCI symbols in each spatial layer when the PUSCH conveys a single TB retransmission for a Hybrid Automatic Repeat reQuest (HARQ) process while the initial TB transmission for the same HARQ process was in a PUSCH conveying multiple TBs, and the determination of the modulation scheme for the coded UCI symbols. | 03-06-2014 |
20140071915 | MULTIPLEXING RESOURCE ELEMENT GROUPS FOR CONTROL CHANNEL ELEMENTS OF CONTROL CHANNELS - Methods and apparatus are described for forming Control Channel Elements (CCEs) from Resource Element Groups (REGs) that are located in one or more Physical Resource Block (PRB) pairs from a set of PRB pairs, for determining a first symbol in a Transmission Time Interval (TTI) for a Physical Downlink Shared Channel (PDSCH), and for determining whether the PDSCH includes all PRB pairs indicated by a respective PDCCH scheduling the PDSCH. | 03-13-2014 |
20140071928 | MULTIPLEXING LARGE PAYLOADS OF CONTROL INFORMATION FROM USER EQUIPMENTS - An apparatus and method for transmitting Uplink Control Information (UCI) over a Physical Uplink Control CHannel (PUCCH) in a communication system. The method includes acquiring information for configuration of a first PUCCH format and a second PUCCH format; generating UCI to be transmitted; selecting one of the first PUCCH format and the second PUCCH format for transmitting the UCI; encoding the generated UCI; performing an Inverse Fourier Transform (IFT) operation on the encoded UCI; and transmitting the IFT performed UCI using the selected PUCCH format. The second PUCCH format is selected, if the transmitting of the UCI is related to multiple downlink carriers. | 03-13-2014 |
20140071935 | MULTIPLEXING RESOURCE ELEMENT GROUPS FOR CONTROL CHANNEL ELEMENTS OF CONTROL CHANNELS - Methods and apparatus are described for forming Control Channel Elements (CCEs) from Resource Element Groups (REGs) that are located in one or more Physical Resource Block (PRB) pairs from a set of PRB pairs, for determining a first symbol in a Transmission Time Interval (TTI) for a Physical Downlink Shared Channel (PDSCH), and for determining whether the PDSCH includes all PRB pairs indicated by a respective PDCCH scheduling the PDSCH. | 03-13-2014 |
20140105189 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DIFFERENT SIGNAL TYPES IN COMMUNICATION SYSTEMS - A method and apparatus are provided for transmitting a Reference Signal (RS) by a User Equipment (UE) in a wireless communication system. The method includes transmitting a DeModulation Reference Signal (DM RS) and information data in a sub-frame; and transmitting a Sounding Reference Signal (SRS) in a last symbol in another sub-frame. The DM RS is transmitted in a middle symbol in each slot of the sub-frame, and the information data is transmitted in other symbols in each slot of the sub-frame. | 04-17-2014 |
20140126526 | APPARATUS FOR DIMENSIONING THE CONTROL CHANNEL FOR TRANSMISSION EFFICIENCY IN COMMUNICATIONS SYSTEMS - Embodiments of the invention provide methods for optimizing the spectral efficiency of control channel transmissions carrying scheduling assignments from a serving Node B to user equipments. This is accomplished by adjusting the control channel size between successive transmission time intervals according to the number of user equipments having scheduling assignments and possibly according to the modulation and coding scheme used for the transmission of each scheduling assignments. | 05-08-2014 |
20140133395 | METHODS AND APPARATUS FOR IDENTIFICATION OF SMALL CELLS - Orthogonal multi-user, multiple input, multiple output (MU-MIMO) multiplexing capacity for demodulation reference signals (DMRSs) is increased without increasing the overhead in resource elements per physical resource block by using length-4 orthogonal cover codes (OCC-4). A base station switches between legacy DMRS antenna port mappings and OCC-4 mapping based upon either a transmission mode or a channel station information process configuration field value. | 05-15-2014 |
20140133437 | METHOD FOR DETERMINING THE LOCATION OF CONTROL CHANNELS IN THE UPLINK OF COMMUNICATION SYSTEMS - Embodiments of the Invention provide methods for user equipments to implicitly determine the location for the transmission of uplink control signaling information, that is in response to downlink data packet transmissions, using information that is already available through the downlink control, signaling for the respective downlink scheduling assignments. No additional explicit downlink control signaling is required for the transmission of the above uplink control signaling from each user equipment. | 05-15-2014 |
20140153492 | INDEXING RESOURCES FOR TRANSMISSION OF ACKNOWLEDGEMENT SIGNALS IN MULTI-CELL TDD COMMUNICATION SYSTEMS - Methods and apparatus are described for a User Equipment (UE) to determine a set of resources available for transmitting an acknowledgement signal in an UpLink (UL) Component Carrier (CC) in response to reception of multiple DownLink (DL) Scheduling Assignments (SAs) transmitted from a base station with each DL SA being associated with a respective DL CC. The UL CC and a first DL CC establish a communication link when the UE is configured for communication over a single UL CC and a single DL CC. | 06-05-2014 |
20140160916 | APPARATUS AND METHOD FOR ALLOCATING CODE RESOURCES TO UPLINK ACK/NACK CHANNELS IN A CELLULAR WIRELESS COMMUNICATION SYSTEM - A method and apparatus are provided for allocating code resources to ACK/NACK channel indexes, when UEs need ACK/NACK transmission in a wireless communication system in which a predetermined number of orthogonal cover Walsh codes is selected from among available orthogonal cover Walsh codes, at least one subset is formed, having the selected orthogonal cover Walsh codes arranged in an ascending order of cross interference, subsets are selected for use in first and second slots of a subframe, and the orthogonal cover Walsh codes of the subset selected for each slot and ZC sequence cyclic shift values are allocated to the ACK/NACK channel indexes. | 06-12-2014 |
20140161060 | TRANSMISSIONS/RECEPTIONS OF UPLINK ACKNOWLEDGEMENT SIGNALS IN WIRELESS NETWORKS - An apparatus for use in a wireless communication network includes a UE configured to communicate with a plurality of serving cells with at least a first serving cell and a second serving cell. The UE is configured to operate in at least two carrier frequencies. The UE includes processing circuitry. The processing circuitry is configured to detect one or more scheduling assignments for receiving one or more respective PDSCHs from a respective one or more of the plurality of serving cells. The processing circuitry is also configured to receive the one or more PDSCHs from the respective one or more of the plurality of serving cells based on the one or more scheduling assignments. The processing circuitry is further configured to transmit HARQ-ACK information on a PUCCH in response to receiving the one or more PDSCHs. The processing circuitry is configured to utilize first and second power control loops. | 06-12-2014 |
20140177572 | TRANSMITTING UPLINK CONTROL INFORMATION OVER A DATA CHANNEL OR OVER A CONTROL CHANNEL - Methods and apparatus are described for User Equipment (UE) to concurrently transmit Uplink Control Information (UCI) and data information to a Node B. The Node B can configure the UE to transmit UCI together with data information in a Physical Uplink Shared CHannel (PUSCH) or separate from data information in a Physical Uplink Control CHannel (PUCCH). The UE may also determine whether to transmit UCI together with data information in the PUSCH or separate from data information in the PUCCH based on criteria involving a ratio of PUSCH resources for UCI transmission over the total PUSCH resources, a Modulation and Coding Scheme (MCS) for the data information, an absolute power difference between PUCCH and PUSCH transmissions, whether the PUSCH transmission uses frequency hopping, and/or whether spatial multiplexing is used for the data transmission. | 06-26-2014 |
20140185537 | OBTAINING CONTROL CHANNEL ELEMENTS OF PHYSICAL DOWNLINK CONTROL CHANNELS FOR CROSS-CARRIER SCHEDULING - Methods and apparatus of a NodeB or a user equipment (UE) in communication with each other are provided. The NodeB transmits and the UE receives via a Physical Downlink Control Channel (PDCCH). Control Channel Elements (CCEs) corresponding to a PDCCH candidate are obtained based on n | 07-03-2014 |
20140192738 | UPLINK CONTROL INFORMATION TRANSMISSIONS/RECEPTIONS IN WIRELESS NETWORKS - A method and apparatus provide a user equipment (UE) configured to communicate with a plurality of carrier aggregation (CA) groups with at least a first CA group (CG1) and a second CA group (CG2). The UE includes processing circuitry. The processing circuitry is configured to determine whether the UE is power-limited. The UE is scheduled to transmit acknowledged information in a physical uplink shared channel (PUSCH) to a cell of the CG1 and uplink control information (UCI), other than the acknowledgement information, in a physical uplink control channel (PUCCH) to a cell of the CG2. The processing circuitry is also configured to, responsive to the UE being power-limited, prioritize the PUSCH for power allocation. The processing circuitry is also configured to transmit the PUSCH to the cell of the CG1. | 07-10-2014 |
20140192775 | METHODS AND APPARATUS FOR INTER-ENB CARRIER AGGREGATION - A method and apparatus for connecting to a secondary enhanced NodeB. A transceiver configured to receive a Radio Resource Control (RRC) message from a Master enhanced NodeB (MeNB). The RRC message comprises a dedicated random access resources configuration for the UE to perform random access to a cell associated with a Secondary enhanced NodeB (SeNB) for a purpose of an addition of the SeNB, and an identification of the cell to which the random access is to be performed. Responsive to receiving the RRC message, command the Media Access Control (MAC) to trigger the random access for the addition of the SeNB to the cell with the identification indicated in the RRC message with the random access resources indicated in the RRC message. The MeNB is an eNB which the UE connects to initially and which acts as mobility anchor. | 07-10-2014 |
20140198737 | OVERHEAD REDUCTION FOR TRANSMISSION OF ACKNOWLEDGMENT SIGNALS - A method and apparatus for compressing resources used for transmitting acknowledgment signals from User Equipments (UEs). An acknowledgment signal is in response to detections from a UE of one or more Physical Downlink Control CHannels (PDCCHs) in respective one or more Transmission Time Interval (TTIs) within M TTIs. Each PDCCH is transmitted over Control Channel Elements (CCEs). Resources account for both CCEs in a same TTI and for TTIs within the M TTIs. A Hybrid Automatic Repeat reQuest (HARQ) Acknowledgment Resource Offset (HRO) field in a Downlink Control Information (DCI) format is used to compress resources in both CCE and TTI domains. For the first TTI of the M TTIs, all HRO values compress resources in the CCE domain while for all remaining TTIs, half HRO values compress resources in the CCE domain and half HRO values compress resources in the TTI domain. | 07-17-2014 |
20140233506 | TRANSMISSION DIVERSITY AND MULTIPLEXING FOR HARQ-ACK SIGNALS IN COMMUNICATION SYSTEMS - A method and apparatus are described for a User Equipment (UE) to transmit in a control channel ACKnowledgement signals associated with a Hybrid Automatic Repeat reQuest process (HARQ-ACK signals) in response to receiving Transport Blocks (TBs) transmitted from a base station. The UE conveys the HARQ-ACK information by selecting one resource from multiple resources in the control channel and by selecting a constellation point of the modulation scheme for the HARQ-ACK signal. Transmission diversity is supported using different control channel resources that are already available to the UE without configuring additional resources. Design principles are described to optimally map the HARQ-ACK information to control channel resources and modulation constellation points for a Time Division Duplex (TDD) system and for a Frequency Division Duplex (FDD) system. | 08-21-2014 |
20140269451 | TRANSMISSION OF SOUNDING REFERENCE SIGNALS FOR ADAPTIVELY CONFIGURED TDD COMMUNICATION SYSTEMS - Methods and apparatus of a base station or a User Equipment (UE) in communication with each other are provided. The UE is configured by the base station for operation with an adapted Time Division Duplex (TDD) UpLink-DownLink (UL-DL) configuration. A process enabling transmission of a Sounding Reference Signal (SRS) from the UE to the base station and a process for the base station to determine parameters for a DL transmission to the UE are provided. | 09-18-2014 |
20140269452 | TRANSMISSION OF ACKNOWLEDGEMENT INFORMATION IN ADAPTIVELY CONFIGURED TDD COMMUNICATION SYSTEMS - Methods and apparatus of a base station or a User Equipment (UE) in communication with each other are provided. The UE is configured by the base station for operation with an adapted Time Division Duplex (TDD) UpLink-DownLink (UL-DL) configuration. A process enabling transmission of acknowledgement information from the UE for communication in two different sets of DL Transmission Time Intervals (TTIs) is provided. | 09-18-2014 |
20140269453 | COMPUTING AND TRANSMITTING CHANNEL STATE INFORMATION IN ADAPTIVELY CONFIGURED TDD COMMUNICATION SYSTEMS - Methods and apparatus of a base station or a User Equipment (UE) in communication with each other are provided. The UE is configured by the base station for operation with an adapted Time Division Duplex (TDD) UpLink-DownLink (UL-DL) configuration. A process enabling transmission of Channel State Information (CSI) from the UE for communication in two different sets of DL Transmission Time Intervals (TTIs) is provided. | 09-18-2014 |
20140269454 | UPLINK POWER CONTROL IN ADAPTIVELY CONFIGURED TDD COMMUNICATION SYSTEMS - Methods and apparatus of a base station or a User Equipment (UE) in communication with each other are provided. The UE is configured by the base station for operation with an adapted Time Division Duplex (TDD) UpLink-DownLink (UL-DL) configuration. A process enabling UL power control for transmissions of various channels or signals from the UE in two different sets of UL Transmission Time Intervals (TTIs) and a process enabling receptions of data transport blocks by the base station in two different sets of UL TTIs are provided. | 09-18-2014 |
20140269460 | CHANNEL STATE INFORMATION FOR ADAPTIVELY CONFIGURED TDD COMMUNICATION SYSTEMS - Methods and apparatus of a base station or a User Equipment (UE) in communication with each other are provided. The UE is configured by the base station for operation with an adapted Time Division Duplex (TDD) UpLink-DownLink (UL-DL) configuration. A process enabling the base station to configure a UE with resources for obtaining channel and interference measurements in two sets of Transmission Time Intervals (TTIs) and a process for the UE to obtain a Channel State Information (CSI) from the channel and interference measurements in the two sets of TTIs are provided. | 09-18-2014 |
20140286208 | GENERATION OF HARQ-ACK INFORMATION AND POWER CONTROL OF HARQ-ACK SIGNALS IN TDD SYSTEMS WITH DOWNLINK OF CARRIER AGGREGATION - Methods and apparatus are provided for a User Equipment (UE) configured to have multiple cells in a DownLink (DL) of a Time Division Duplex (TDD) communication system so as to determine a power of an acknowledgement signal that the UE transmits in a control channel and to determine a number of acknowledgement information bits that the UE multiplexes with data information bits in a data channel. A transmission power of the control signal is determined based on DL Assignment Index (DAI) Information Elements (IEs) in DL Scheduling Assignments (SAs) that the UE detects through multiple transmission time intervals and through the multiple configured DL cells. The number of acknowledgement information bits in the data channel is determined based on a DAI IE of an UpLink (UL) SA associated with the transmission of the data channel. | 09-25-2014 |
20140286255 | UPLINK DEMODULATION REFERENCE SIGNALS IN ADVANCED WIRELESS COMMUNICATION SYSTEMS - User equipment is provided to communicate with a base station. The user equipment includes a transceiver. The transceiver configured to transmit a physical uplink shared channel (PUSCH). A DMRS is mapped on a single, single carrier frequency division multiplexing (SC-FDM) symbol of a subframe. Data and acknowledgement (HARQ-ACK) information is mapped on remaining SC-FDM symbols of the subframe. The HARQ-ACK information is mapped on virtual subcarriers on two SC-FDM symbols next to the single SC-FDM symbol with the DMRS. | 09-25-2014 |
20140293843 | DOWNLINK SIGNALING FOR ADAPTATION OF AN UPLINK-DOWNLINK CONFIGURATION IN TDD COMMUNICATION SYSTEMS - An apparatus includes a User Equipment (UE) having a receiver and a decoder. The receiver is configured to receive, from an eNodeB (eNB), a signal indicating a configuration of a period to receive one or more Physical Downlink Control CHannels (PDCCHs) in respective one or more Transmission Time Intervals (TTIs). Each of the one or more PDCCHs conveys a same Downlink Control Information (DCI) format. The DCI format includes at least one field indicating a first Time Division Duplexing (TDD) UpLink-DownLink (UL-DL) configuration in a first cell for DL data receptions or UL data transmissions. A TDD UL-DL configuration includes ten TTIs each having a respective serial index from 0 to 9. The receiver is also configured to receive, from the eNB, at least one PDCCH of the one or more PDCCHs. The decoder is configured to decode the DCI format conveyed by the at least one PDCCH in a second cell. The period is a multiple of ten TTIs, and the one or more TTIs are in a last ten TTIs of the period. | 10-02-2014 |
20140293893 | AGGREGATION OF FDD AND TDD CELLS - Methods and apparatus of a base station or a User Equipment (UE) in communication with each other are provided. The UE is configured by the base station for simultaneous communication with at least a cell using Frequency Division Duplexing (FDD) and at least a cell using Time Division Duplexing (TDD). Processes enabling transmission of control information associated with scheduling data reception or data transmission from the UE are provided. | 10-02-2014 |
20140293932 | MULTIPLEXING CONTROL AND DATA INFORMATION FROM A USER EQUIPMENT IN A PHYSICAL DATA CHANNEL - Methods and apparatus are described for transmitting and receiving HARQ-ACK information in a Physical Uplink Shared CHannel (PUSCH). A method of receiving includes configuring a plurality of cells for a user equipment (UE), where each of the plurality of cells is associated with one transmission mode; receiving, from the UE, via a physical uplink shared channel (PUSCH), encoded concatenated HARQ-ACK bits for the plurality of cells; and decoding encoded concatenated HARQ-ACK bits. HARQ-ACK bits for the plurality of cells are concatenated based on an order of a cell index for each of the plurality of cells, and the concatenated HARQ-ACK bits include 2 HARQ-ACK bits for a cell associated with a transmission mode supporting up to 2 transport blocks and 1 HARQ-ACK bit for a cell associated with a transmission mode supporting up to 1 transport block | 10-02-2014 |
20140307672 | APPARATUS AND METHOD FOR ENABLING LOW LATENCY TRANSMISSIONS IN THE UPLINK OF A COMMUNICATION SYSTEM - A method is provided for transmitting signals in an uplink channel by a UE in a communication system. Downlink control information including information indicating second frequency resources is received from a base station. The UE determines first frequency resources for transmission of the signals in the uplink channel from the information indicating the second frequency resources. The UE transmits the signals in the uplink channel using the first frequency resources. | 10-16-2014 |
20140328260 | SCHEDULING OVER MULTIPLE TRANSMISSION TIME INTERVALS - Methods and apparatus of a NodeB or a User Equipment (UE) in communication with each other are provided. The NodeB transmits and the UE receives Physical Downlink Data CHannels (PDSCHs) or the UE transmits and the NodeB receives Physical Uplink Data CHannels (PUSCHs) in respective Transmission Time Intervals (TTIs). The PDSCHs or the PUSCHs are scheduled by a Downlink Control Information (DCI) format transmitted in a Physical Downlink Control CHannel (PDCCH) in a TTI. A communication process enabling multi-TTI or cross-TTI scheduling of PDSCHs or PUSCHs is provided. | 11-06-2014 |
20140328329 | METHODS AND APPARATUS FOR DEVICE-TO-DEVICE COMMUNICATIONS SYSTEM - A method includes configuring one or multiple pools of Device-to-Device (D2D) communication resources by an eNodeB (eNB). The method also includes signaling of the configured pool(s) of D2D communication resources by the eNB to a first User Equipment (UE) and a plurality of UEs using a common broadcast channel; and sending a request for one or multiple D2D communication resources to an eNB by the first UE configured to transmit D2D messages. The method also includes determining one or multiple resources for D2D communication by an eNB for the first UE. The method also includes communicating D2D resource allocation information to the first UE. The method also includes communicating D2D resource allocation information by the first UE to multiple UEs; and transmitting D2D data by the first UE to multiple UEs. Methods for configuring and signaling D2D communication resources by relay or out-of-coverage UEs are also provided. | 11-06-2014 |
20140355506 | TURBO HSDPA SYSTEM - A method of power saving for a wireless transceiver (FIGS. | 12-04-2014 |
20140369242 | METHODS OF UL TDM FOR INTER-ENODEB CARRIER AGGREGATION - One or more embodiments provide a method implemented in a user equipment (UE) used in a wireless communications system. The method includes transmitting an indication to a base station that the UE is capable of transmitting on a single uplink carrier frequency and downlink carrier aggregation. The method also includes receiving an uplink carrier frequency switching pattern from the base station. The method also includes switching uplink carrier frequencies based on the uplink carrier frequency switching pattern. | 12-18-2014 |
20150016312 | METHOD AND APPARATUS FOR COVERAGE ENHANCEMENT FOR A RANDOM ACCESS PROCESS - Methods and apparatus are provided for a User Equipment (UE) and a base station in communication with each other to determine parameters for a Random Access (RA) process. The base station informs the UE through a System Information Block (SIB) of a number of resource sets for RA preamble transmission by the UE. Each resource set is associated with a number of repetitions for a RA preamble transmission, with a maximum number of RA preamble transmissions, and with a number of repetitions the base station transmits a response to a RA preamble reception. The SIB also informs an association between a range of path-loss values and a number of RA preamble repetitions. The UE determines a number of repetitions for a first RA preamble transmission from its path-loss measurement. | 01-15-2015 |
20150085717 | SYSTEM AND METHOD FOR COVERAGE ENHANCEMENTS OF BROADCAST CHANNELS - Methods and apparatus are provided for a base station to transmit and for a UE to detect broadcast information when the UE operates in a Coverage Enhancement (CE) mode. The base station transmits repetitions of signaling conveying broadcast information in one or more subframes of each frame in a quadruple of frames. The transmission is intermittent in time. To detect the broadcast information, the UE blindly combines and decodes the repetitions of signaling assuming their existence. The base station informs the pattern for the intermittent transmissions of the signaling to UEs connected to the base station or to other base stations. | 03-26-2015 |
20150085795 | SYSTEM AND METHOD FOR RESOURCE MAPPING FOR COVERAGE ENHANCEMENTS OF BROADCAST CHANNELS - Methods and apparatus are provided for a base station to transmit repetitions of broadcast information and for a UE to detect the broadcast information. In a first method, the base station maps each repetition in a respective quadruple of subframe symbols while accounting for a possible different number of available sub-carriers among quadruplets of subframe symbols. In a second method, the base station maps the repetitions successively in available sub-carriers. For intermittent transmissions of repetitions, the UE can use the mapping structure of the repeated broadcast information to determine an existence of a transmission. | 03-26-2015 |
20150085802 | EXTENSION OF PHYSICAL DOWNLINK CONTROL SIGNALING IN A COMMUNICATION SYSTEM - Methods and apparatus are provided for the transmission of physical downlink control signaling. In one method, a User Equipment (UE) receives information associated with a physical resource block (PRB) for enhanced physical downlink control channel (EPDCCH) from a base station. Based on either first information received on physical control format indicator channel (PCFICH) or second information received on higher layer signaling, the UE determines a starting orthogonal frequency division multiple (OFDM) symbol on which EPDCCH transmission starts. The UE receives control information on the EPDDCH based on the information associated with the PRB and the determined starting OFDM symbol. | 03-26-2015 |