Patent application number | Description | Published |
20110080896 | METHOD AND APPARATUS FOR MITIGATING DOWNLINK CONTROL CHANNEL INTERFERENCE | 04-07-2011 |
20110205978 | Multi-Carrier Control Signaling in Wireless Communication System - A method in a wireless communication terminal including monitoring a terminal specific search space of a first Component Carrier (CC) from a base unit, wherein the search space corresponds to a set of Physical Downlink Control CHannel (PDCCH) candidates monitored by the terminal for PDCCH messages, and receiving an activation message on the first CC, wherein the activation message activates at least one additional CC. The size of the search space monitored by the terminal after receiving the activation message is greater than the size of the search space monitored before receiving the activation message. | 08-25-2011 |
20110275374 | HANDOVER DURING CARRIER AGGREGATION OPERATION IN WIRELESS COMMUNICATION NETWORK - Methods for performing handovers and addition of carriers during carrier aggregation operation are described. A mobile station can indicate failure to perform downlink synchronization to some but not all cells of a target eNB, in response to a handover command. The mobile station can activate carriers based on various combinations of transmission of random access preambles, reception of random access response messages and transmission of handover complete messages. A base station can activate carriers based on various combinations of reception of random access preambles, transmission of random access response messages and reception of handover complete messages. | 11-10-2011 |
20120044812 | METHOD AND APPARATUS FOR CHANGE OF PRIMARY CELL DURING CARRIER AGGREGATION - Methods for performing change of primary cell during carrier aggregation operation are described. A mobile station (MS) receives a message to change a primary cell and to perform a random access communication with a new primary cell. Upon receiving a random access response message from the new primary cell, the MS starts transmitting a control channel to the new primary cell. In one embodiment, the MS releases the configuration of an uplink control channel and transmits uplink control information through an uplink shared channel. Upon completion of the primary cell change procedure, the MS starts transmission of an uplink control channel to the new primary cell. | 02-23-2012 |
20120087396 | METHOD AND APPARATUS IN WIRELESS COMMUNICATION SYSTEMS - An apparatus and a method therein include selecting a size of a soft buffer memory partition per component carrier in a Carrier Aggregation scenario. The method supports multiple carriers to select a size of a soft buffer memory partition, the partition associated with receiving data on at least one component carrier, the multi-carrier system comprising at least two component carriers, each component carrier is associated with a configured bandwidth, the apparatus comprising the processor configured to select a size of a soft buffer memory partition for the first component carrier based at least in part on a first total number of soft channel bits, a first number associated with hybrid automatic retransmit request processes, and the configured bandwidth of the first component carrier. | 04-12-2012 |
20120113846 | Idle State Interference Mitigation in Wireless Communication Network - A mobile station is disclosed wherein the mobile station determines interference by assessing one or more frames in a first periodic sequence of frames relative to a reference and, in response to the assessment, monitors transmissions from a base station for paging signals during a second periodic sequence of frames, wherein the second periodic sequence of frames is offset from the first periodic sequence of frames by a predetermined amount. | 05-10-2012 |
20120163305 | ENERGY-SAVING BASE STATION AND METHOD - A wireless communication user terminal obtains uplink access configuration information on a physical downlink control channel (PDCCH) addressed to a plurality of user terminals by processing the PDCCH based on a first system information received from a base station on a physical broadcast channel (PBCH) and based on synchronization information. The terminal sends a signature waveform based on the uplink access configuration information, prior to receiving system information in addition to the first system information, whereby the signature waveform enables the base station to transition from a relatively low power operating mode to a relatively high power operating mode. | 06-28-2012 |
20120184265 | Inter-Modulation Distortion Reduction in Multi-Mode Wireless Communication Terminal - A multimode wireless communication terminal that communicates using a first radio access technology (RAT) and a second RAT determines whether the first and second RATs are in an active state, and when the wireless communication terminal is transmitting on the first and second RATs concurrently, transmitting UCI on a PUSCH on the first RAT if there is a scheduled PUSCH transmission or an uplink scheduling grant indicating a periodic CSI reporting, wherein the UCI would otherwise be transmitted on a PUCCH when the wireless communication terminal is not transmitting using the second and the first RAT simultaneously and there is a scheduled PUSCH on the first RAT. | 07-19-2012 |
20120184327 | INTER-MODULATION DISTROTION REDUCTION IN MULTI-MODE WIRELESS COMMUNICATION TERMINAL - A multimode wireless communication terminal that communicates using a first radio access technology (RAT) and a second RAT determines whether the first and second RATs are in an active state, and modifies a maximum transmit power limit of the first RAT based on a voice codec rate of a voice transmission on the second RAT when the first RAT and the second RAT are in the active state concurrently, wherein the second RAT is conducting the voice transmission in the active state. In an alternative embodiment, the limit is modified based on a transmit power status of the second RAT or on a transmission type of the first RAT. | 07-19-2012 |
20120236735 | ENHANCED POWER HEADROOM REPORTING IN WIRELESS COMMUNICATION NETWORKS - A method in a wireless communication device includes determining a first configured maximum transmit power (P | 09-20-2012 |
20120236736 | Method and Apparatus for Multi-Radio Coexistence with a System on an Adjacent Frequency Band Having a Time-Dependent Configuration | 09-20-2012 |
20120257519 | Method and Apparatus for Multi-Radio Coexistence on Adjacent Frequency Bands - A method and apparatus for a co-scheduler can mitigate UE-to-UE adjacent carrier frequency band interference by allocating three sets to a first user equipment uplink. Each set has at least one sub-carrier in a first frequency band, at least one uplink time period, and at least one transmission power parameter. The co-scheduler initially allocates the first set. The co-scheduler allocates the second set in response to detecting a second user equipment operating proximal to the first user equipment, and the second set differs from the first set in either at least one sub-carrier or at least one transmission power parameter. The co-scheduler allocates the third set in response to detecting that the second user equipment is no longer operating proximal to the first user equipment, and the third set differs from the second set in either at least one sub-carrier or at least one transmission power parameter. | 10-11-2012 |
20120263047 | Method and Apparatus to Detect the Transmission Bandwidth Configuration of a Channel in Connection with Reducing Interference Between Channels in Wirelss Communication Systems - In a method of detecting a transmission bandwidth configuration, the method includes monitoring ( | 10-18-2012 |
20120263117 | Method and Apparatus to Adjust the Control Region of a Subframe for Reducing Interference Between Channels in Wireless Communication Systems - In a method of scheduling, a subframe ( | 10-18-2012 |
20120263118 | Method and Apparatus Using Two Radio Access Technologies for Scheduling Resources in Wireless Communication Systems - In a method for scheduling resources, the method includes receiving a first control channel in a first subframe ( | 10-18-2012 |
20120281593 | METHOD AND APPARATUS FOR PROVIDING USER EQUIPMENT ACCESS TO TV WHITE SPACE RESOURCES BY A BROADBAND CELLULAR NETWORK - A broadband cellular network (BCN) provides a user equipment (UE) access to TVWS resources. The BCN authorizes the UE to access TVWS resources by conveying a mobile device identifier received from the UE, and a cell identifier associated with the UE's coverage area, to a Federal Communications Commission (FCC)-certified Database and receiving, from the Database, and storing an FCC ID associated with the UE and a set of available TVWS resources. The BCN then conveys, to the UE via a broadband cellular technology, a channel resource information element (CRIE) that includes the cell identifier and identifies the set of available TVWS resources. Subsequently, the BCN re-authorizes the UE to access TVWS resources based on the stored FCC ID and without re-conveying the mobile device identifier to the Database. The BCN further utilizes broadband cellular technology procedures to provide a “virtual” contact verification signal (VCVS) to the UE. | 11-08-2012 |
20120281594 | METHOD AND APPARATUS FOR PROVIDING USER EQUIPMENT ACCESS TO TV WHITE SPACE RESOURCES BY A BROADBAND CELLULAR NETWORK - A broadband cellular network (BCN) provides a user equipment (UE) access to TVWS resources. The BCN authorizes the UE to access TVWS resources by conveying a mobile device identifier received from the UE, and a cell identifier associated with the UE's coverage area, to a Federal Communications Commission (FCC)-certified Database and receiving, from the Database, and storing an FCC ID associated with the UE and a set of available TVWS resources. The BCN then conveys, to the UE via a broadband cellular technology, a channel resource information element (CRIE) that includes the cell identifier and identifies the set of available TVWS resources. Subsequently, the BCN re-authorizes the UE to access TVWS resources based on the stored FCC ID and without re-conveying the mobile device identifier to the Database. The BCN further utilizes broadband cellular technology procedures to provide a “virtual” contact verification signal (VCVS) to the UE. | 11-08-2012 |
20130028200 | INTERFERENCE MITIGATION IN AN ACCESSORY FOR A WIRELESS COMMUNICATION DEVICE - A method in a wireless communication terminal includes receiving configuration signaling for transmitting on a first set of radio resources wherein transmitting only on the first set of radio resources leads to a time-domain periodic repetitive pattern of transmissions from the terminal in a transmission interval that causes interference to a companion device communicably coupled to the wireless communication terminal. The terminals selects a second set of radio resources for transmitting on in the transmission interval such that transmissions on a combination of the second set of radio resources and the first set of radio resources does not lead to a periodic repetitive pattern of transmissions from the terminal in the transmission interval. | 01-31-2013 |
20130044664 | METHOD AND APPARATUS FOR CONTROL CHANNEL TRANSMISSION AND RECEPTION - A communication system is provided wherein a user equipment (UE) receives control information from a wireless network. The UE monitors control channel candidates using common reference signals (CRS) and monitors enhanced control channel candidates using demodulation reference signals (DMRS) when the UE is configured in a first transmission mode, such as transmission mode 9, for receiving a downlink shared traffic channel based on DMRS. The UE monitors control channel candidates only using CRS when the UE is configured in a second transmission mode, such as any of transmission modes 1-6, for receiving a downlink shared traffic channel based on CRS. The UE then receives downlink control information (DCI) in a subframe in one of the monitored control channel candidates or enhanced control channel candidates in the subframe. | 02-21-2013 |
20130044692 | REFERENCE SIGNAL FOR A CONTROL CHANNEL IN WIRELESS COMMUNICATION NETWORK - A wireless communication terminal receives a first set of pilot signal resource elements and control information in one or more spatial layers in a first resource block in a subframe and a second set of pilot signal resource elements and data in one or more spatial layers in a second resource block in the subframe, wherein the first and second resource blocks span a set of time symbols in a sub-frame, the first resource blocks span a first set of frequency carriers in the sub-frame, and the second resource blocks span a second set of frequency carriers in the sub-frame. The terminal decodes the one or more spatial layers in which the control information is received using the first set of pilot signal resource elements, wherein the first set of pilot signal resource elements comprises a first number of pilot signal resource elements per layer. The terminal also decodes the one or more spatial layers in which the data is received in the second resource block using the second set of pilot signal resource elements, wherein the second set of pilot signal resource elements comprises a second number of pilot signal resource elements, per layer, present in the second resource block, wherein the first number is greater than the second number. | 02-21-2013 |
20130044727 | METHOD AND APPARATUS FOR CONTROL CHANNEL TRANSMISSION AND RECEPTION - A user equipment (UE) receives a signal comprising multiple resource blocks and configured for receiving a subframe comprising multiple time-frequency resources, the time-frequency resources comprising at least two control channel candidates. The UE determines a first control channel candidate of the at least two control channel candidates in the subframe, determines a first antenna port (AP) associated with the first control channel candidate, decodes the first control channel candidate based on the first AP, determines a second control channel candidate of the at least two control channel candidates in the subframe, determines a second AP associated with the second control channel candidate, and decodes the second control channel candidate based on the second AP, wherein the AP used for decoding the first control channel candidate is distinct from the AP used for decoding the second control channel candidate. | 02-21-2013 |
20130044831 | POWER ALLOCATION FOR OVERLAPPING TRANSMISSION WHEN MULTIPLE TIMING ADVANCES ARE USED - A method and apparatus for power allocation for overlapping transmissions is provided herein. During operation, user equipment will determine if transmissions to a single base station, on various frequencies, will be overlapping. If so, a determination is made to back off the power for at least one transmission on one frequency. | 02-21-2013 |
20130083695 | METHOD FOR CONTENTION BASED RANDOM ACCESS ON A SECONDARY CARRIER - A mobile station performs random access method. The method includes receiving, from a first cell, a message identifying a random access preamble to transmit to a second cell, wherein the first and second cell operate on different frequencies. The method also includes determining whether the random access preamble is from a set of contention based random access preambles. In addition, the method includes receiving a random access response message, wherein the random access response message is addressed to a unique identifier of the mobile station; and transmitting, if the identified random access preamble is from the set of contention based preambles, a timing verification message. | 04-04-2013 |
20130083747 | METHOD FOR CONTENTION BASED RANDOM ACCESS ON A SECONDARY CARRIER - A mobile station comprises a wireless transceiver coupled to a processor. The mobile station is configured to receive at the transceiver a control channel transmission on a first frequency from a first cell wherein the control channel transmission is addressed to a unique identifier of the mobile station. The processor is configured to determine that the control channel transmission indicates resources for a data channel. The mobile station is configured to receive at the transceiver a data channel transmission in resources indicated in the control channel transmission, the data channel transmission comprising a first message indicating a first resource for an uplink transmission, wherein the mobile station is configured to transmit, to a second cell on an uplink frequency, a second message using the first resource. | 04-04-2013 |
20130121304 | ACKNOWLEDGEMENT SIGNALING IN WIRELESS COMMUNICATION NETWORK - A wireless communication device is disclosed. The device includes a transceiver coupled to a processor configured to determine an antenna port associated with a received control message scheduling a transport block, to determine an acknowledgement resource based on the antenna port, and to cause the transceiver to transmit an acknowledgement on the acknowledgement resource, wherein the acknowledgement indicates receipt or non-receipt of the transport block. | 05-16-2013 |
20130156002 | DOWNLINK CONTROL CHANNEL SIGNALING IN WIRLESS COMMUNICATION SYSTEMS - A method in a wireless communication device may include receiving a plurality of sub-frames, each sub-frame having time-frequency resource elements, at least one of the sub-frames having a control channel. In some implementations, the plurality of sub-frames forms a continuum of concatenated sub-frames. Each of the plurality of resource allocation fields of the control channel may indicate a resource assignment to the wireless communication device based on a channel quality report, as well as resource assignments in sub-frames of the continuum of concatenated sub-frames. At least one sub-frame of the continuum of concatenated sub-frames may include information indicating that at least some of the resource assignments are frequency diverse. | 06-20-2013 |
20130315157 | REDUCING THE EFFECTS OF INTERFERENCE EXPERIENCED BY A COMMUNICATION DEVICE - Disclosed are methods for allowing a wireless communication device (or “user equipment” or “UE”) to receive signaling information when there is a power imbalance between a primary cell (“Pcell”) and a New Carrier Type (“NCT”) secondary cell (“Scell”). In one aspect, the UE reduces its downlink bandwidth to cover only a carrier of the Pcell, receives control signaling information, if present, and then increases its bandwidth to cover carriers of both the Pcell and Scell. | 11-28-2013 |
20140036747 | Method and Apparatus For Receiving A Control Channel - Various methods and apparatuses for receiving a control channel involve a communication device monitoring a first control and receiving information from a network regarding the configuration of a second control channel. The communication device receives an uplink grant from the network; transmits a message to the network, in which the message indicates to the network that the communication device is capable of monitoring the second control channel. The communication device monitors the second control channel based on the configuration information receiving via the first control channel. | 02-06-2014 |
20140185495 | METHOD AND APPARATUS FOR DEVICE-TO-DEVICE COMMUNICATION - A first user equipment (UE) receives information regarding a signal configuration from a network entity on a first carrier, and a reference signal from a second UE on a second carrier. The second carrier is associated with a transmission bandwidth configuration and a channel bandwidth. The transmission bandwidth configuration of the second carrier is contained within the channel bandwidth of the second carrier. The reference signal is within the channel bandwidth of the second carrier and in proximity to an edge of the transmission bandwidth configuration of the second carrier. | 07-03-2014 |
20140185530 | METHOD AND APPARATUS FOR DEVICE-TO-DEVICE COMMUNICATION - A first user equipment (UE) and a second UE communicate with a network element (e.g., an eNB) over a carrier (e.g., an uplink or downlink cellular carrier). The first and second UEs also engage in D2D communication using resources of the carrier that have been allocated to them by the network entity. Using the allocated resources, the first and second UEs communicate using a subframe that has a first set of symbols in during which the first UE transmits, a second set of symbols during which the second UE transmits, and a guard interval between the first and second UEs. | 07-03-2014 |
20140187283 | METHOD AND APPARATUS FOR DEVICE-TO-DEVICE COMMUNICATION - A first user equipment (UE) wirelessly communicates with a network element (e.g., an eNB) on a carrier (e.g., a cellular uplink or downlink carrier) in accordance with its first capability partitioning configuration. The first UE engages in direct wireless communication on the carrier with a second UE in accordance its second capability partitioning configuration. | 07-03-2014 |
20140198758 | METHOD AND APPARATUS FOR SOFT BUFFER MANAGEMENT FOR CARRIER AGGREGATION - An apparatus and a method therein include selecting a size of a soft buffer memory partition per component carrier in a Carrier Aggregation scenario. The method supports multiple carriers to select a size of a soft buffer memory partition, the partition associated with receiving data on at least one component carrier, the multi-carrier system comprising at least two component carriers, each component carrier is associated with a configured bandwidth, the apparatus comprising the processor configured to select a size of a soft buffer memory partition for the first component carrier based at least in part on a first total number of soft channel bits, a first number associated with hybrid automatic retransmit request processes, and the configured bandwidth of the first component carrier. | 07-17-2014 |
20140198765 | Method and Apparatus for Multi-Radio Coexistence on Adjacent Frequency Bands - Various methods for controlling an aggressor user equipment (UE) can use two transmission power control loops to mitigate UE-to-UE adjacent carrier frequency band interference to a geographically proximal victim UE. The aggressor UE can select between different transmission power parameters based on two (or more) power values. The usage of any particular power value depends on the time period of the transmission. For example, if a proximal victim UE is scheduled to receive when the aggressor UE is scheduled to transmit, a lower power value may be selected as instructed by a co-scheduler or determined by the aggressor UE. The aggressor UE can also send dual power headroom reports to its serving base station based on the two power values. | 07-17-2014 |
20140293939 | METHOD AND APPARATUS FOR RECEIVING A CONTROL CHANNEL - Various methods and apparatuses for receiving a control channel involve a communication device monitoring a first control and receiving information from a network regarding the configuration of a second control channel. The communication device receives an uplink grant from the network; transmits a message to the network, in which the message indicates to the network that the communication device is capable of monitoring the second control channel. The communication device monitors the second control channel based on the configuration information receiving via the first control channel. | 10-02-2014 |
20140302855 | Methods and Devices for Cell Discovery - This disclosure sets forth methods and devices for communication between mobile devices and base stations with active and dormant states. In an embodiment, a base station transmits system information during an active state of the base station with at least one system-information message. The at least one system-information message includes a SystemInformationBlockType1 (“SIB1”) message with a first update-indicator field. The base station selects an update value that indicates whether the system information has changed since a previous transmission of a previous SIB1 message. The base station transmits at least one dormant-state message during a dormant state of the base station with the selected update value in a second update-indicator field of the at least one dormant-state message. | 10-09-2014 |
20140302856 | Methods and Devices for Cell Discovery - This disclosure sets forth methods and devices for communication between mobile devices and base stations with active and dormant states. In an embodiment, a base station transmits system information during an active state of the base station with at least one system-information message. The at least one system-information message includes a SystemInformationBlockType1 (“SIB1”) message with a first update-indicator field. The base station selects an update value that indicates whether the system information has changed since a previous transmission of a previous SIB1 message. The base station transmits at least one dormant-state message during a dormant state of the base station with the selected update value in a second update-indicator field of the at least one dormant-state message. | 10-09-2014 |
20140313985 | METHOD AND APPARATUS FOR ENHANCED MODULATION IN A WIRLESS COMMUNICATION SYSTEM - Disclosed are methods for facilitating enhanced modulation (such as 256-QAM) in wireless networks. The methods generally involve enhancements to physical-layer signaling (such as enhanced MCS tables), enhancements to transport-block tables (to support enhanced MCS values), CSI-feedback enhancements (to ensure that the UE signals the appropriate MCS for enhanced modulation), enhancements to higher-layer signaling, allowing UEs to signal their ability to use the enhanced modulation, and UE category enhancements. | 10-23-2014 |
20140341166 | HANDOVER DURING CARRIER AGGREGATION OPERATION IN WIRELESS COMMUNICATION NETWORK - Methods for performing handovers and addition of carriers during carrier aggregation operation are described. A mobile station can indicate failure to perform downlink synchronization to some but not all cells of a target eNB, in response to a handover command. The mobile station can activate carriers based on various combinations of transmission of random access preambles, reception of random access response messages and transmission of handover complete messages. A base station can activate carriers based on various combinations of reception of random access preambles, transmission of random access response messages and reception of handover complete messages. | 11-20-2014 |
20150016428 | METHODS AND DEVICE FOR PERFORMING DEVICE-TO-DEVICE COMMUNICATION - Disclosed are methods for carrying out device-to-device (“D2D”) communication. In one implementation, a user equipment (“UE”) communicates D2D with another UE using uplink radio resources. The first UE receives a downlink signal from a base station and determines the reception time. The first UE also receives a timing advance for uplink communication. Based on the reception time and the timing advance, the first UE determines an uplink transmission time. When transmitting to the second UE, however, the first UE does not transmit at the determined UL transmission time. Rather, the first UE delays its D2D transmission for a period of time that is based on the second UE's uplink timing advance. | 01-15-2015 |
20150055567 | METHODS AND DEVICES FOR ALLOCATING RESOURCES IN DEVICE-TO-DEVICE COMMUNICATION - This disclosure sets forth methods and devices for allocating resources in Device-to-Device (“D2D”) communications in which a base station sends a control message containing a D2D resource allocation (e.g., the identity of resource blocks and subframes that can be used for D2D) and a bitmap. The bitmap contains grant-indicator bits that tell each mobile station within the D2D group whether it is permitted to receive or transmit using the allocated D2D resources. | 02-26-2015 |