Patent application number | Description | Published |
20080200196 | TRANSMISSION OF PRIORITIZED INFORMATION IN THE PROXIMITY OF REFERENCE SIGNALS - Transmission of information in a wireless network is performed by allocating a channel from a transmitter to a receiver. The channel has at least one time slot with each time slot having a plurality of symbols. Each slot contains at least one reference symbol (RS). As information becomes available for transmission, it is classified as prioritized information (PI) and other information. Digital samples are produced using an element of prioritized information. One or more priority symbols are generated using the digital samples. Other symbols are generated using the other data. Priority symbols are transmitted on the channel in a manner that separation of priority symbol(s) and a reference symbol does not exceed a time duration of one symbol. The other symbols are transmitted in available locations. | 08-21-2008 |
20080219370 | USER EQUIPMENT FEEDBACK STRUCTURES FOR MIMO OFDMA - Embodiments of the present disclosure provide a feedback encoder, a feedback decoder and methods of operating the same. The feedback encoder, for use with user equipment, includes an encoding module configured to provide a rank indicator that is separately reportable from a related selection of at least one of a channel quality indicator and a preceding matrix indicator for the user equipment. The feedback encoder also includes a transmit module configured to transmit the rank indicator and the related selection. The feedback decoder, for use with a base station, includes a receive module configured to receive a rank indicator that is separately reportable from a related selection of at least one of a channel quality indicator and a preceding matrix indicator for user equipment. The feedback decoder also includes a decoding module configured to decode the rank indicator and the related selection for the base station. | 09-11-2008 |
20080247375 | Network-Based Inter-Cell Power Control For Multi-Channel Wireless Networks - A method is described for operating a cellular network, where the cellular network uses a plurality of frequency division multiplexing (FDM) bands for wireless communication from user equipment (UE) to a base station (NodeB). At least one band-specific cell parameter is computed for at least one the plurality of FDM bands by a serving NodeB. The band-specific cell parameters are transmitted from the NodeB serving a first cell to a NodeB serving a second cell. The band-specific cell parameters may be computed in response to scheduling information and/or channel specific measurements made by the NodeB. A UE receives a first Power Configuration, a Second Power Configuration, and a Scheduling Message indicative of an FDM band from the set comprising at least from First FDM band and Second FDM band. UE transmits with the First Power Configuration if the Scheduling Message was indicative of First FDM band, and with the Second Power Configuration otherwise. | 10-09-2008 |
20080247477 | Block Scrambling for Orthogonal Frequency Division Multiple Access - A method of transmitting signals in a communication system over at least two time periods including generating a base signal comprising of at least two samples in each time period, selecting a scrambling sequence of length equal to or greater than the number of time periods, scaling all samples in said signal in a time period with one element of said scrambling sequence and transmitting the scaled signal in said time period. Different elements of the scrambling sequence are used to scale the base signal in different time periods. The signal in each time period is obtained by scaling a base signal. The scrambling sequence is preferably a pseudo-random sequence. The step of scaling all samples in said signal in a time period consists of multiplying all samples of said signal with an element of said scrambling sequence. | 10-09-2008 |
20080267165 | UPLINK SYNCHRONIZATION MAINTENANCE PRINCIPLES IN WIRELESS NETWORKS - A cell within cellular network includes user equipments (UEs) that transmit data to a base station (eNB). UEs are synchronized to the eNB upon entry to the cell. If a particular UE has data to transmit, it will be placed in a connected state and scheduled for transmission. Over a period of time, not all of the UEs will have data to transmit. The UEs are tracked as a scheduled portion and an unscheduled portion, wherein a UE is included in the scheduled portion in response to receiving a scheduling request from the UE. Synchronization is maintained between the eNB and each UE in the scheduled portion by sending a timing adjustment (TA) command if needed in response to receiving a scheduled transmission from each respective UE in the scheduled portion; Synchronization is maintained between the eNB and each UE in the unscheduled portion by allocating a periodic reference signal (sync-RS) to each UE in the unscheduled portion and by sending a respective timing adjustment (TA) command if needed to each respective UE in the unscheduled portion in response to a respective sync-RS received from each UE in the unscheduled portion. | 10-30-2008 |
20080298488 | Allocation of Block Spreading Sequences - A transmission of information from a secondary to a primary node occurs in a plurality of N logical time durations. The transmission from the secondary to primary node in a wireless network is obtained using a first and a second sequence. Embodiments of the present invention mitigate interference by restricting the choice of the first sequence. Thus, in an embodiment of the invention, the first sequence is selected from a set of M sequences wherein M is strictly less than N. In order to accommodate high—velocity users, the restricted set contains a pair of sequences whose element—wise product is mirror symmetric. A transmission component for K-th logical time duration is obtained from the entire second sequence and K-th element of the first sequence. | 12-04-2008 |
20080316957 | Selection of Orthogonal Covering Sequences and Phase Ramped Sequences - A transmission of information from a secondary to a primary node occurs in a plurality of N logical time durations. The transmission from the secondary to primary node in a wireless network is obtained using a first and a second sequence. Embodiments of the present invention mitigate interference by restricting the choice of the first sequence. Thus, in an embodiment of the invention, the first sequence is selected from a set of M sequences wherein M is strictly less than N. In order to accommodate high—velocity users, the restricted set contains a pair of sequences whose element—wise product is mirror symmetric. In other embodiments of the invention, the choices of the first sequence and second sequence in a time-frequency resource is arranged such that interference is mitigated. A transmission component for K-th logical time duration is obtained from the entire second sequence and K-th element of the first sequence. | 12-25-2008 |
20090022110 | Transmission of Multiple Information Elements in Multiple Channels - A transmission of information from a secondary to a primary node occurs in a plurality of N logical time durations. The transmission from the secondary to primary node in a wireless network is performed by first receiving an allocation of M>1 reverse link channels for transmission of N>0 information elements. N information elements are produced. A group of K (possibly only one) reverse link channels is selected from the M allocated reverse link channels, using at least one of the N produced information elements, wherein the group of K reverse link channels comprises at least one channel, such that 001-22-2009 | |
20090034468 | Time-Sharing of Sounding Resources - This invention is a method for time-sharing sounding resources. A first embodiment defines one common sounding period for all user equipment and all sounding resources. A second embodiment allows for different sounding periods so long as each individual sounding resource uses only one sounding period. A third embodiment offers the most flexibility in sharing of the sounding resources by permitting changes in time. The first option is a special case of the second option. The second option is a special case of the third option. | 02-05-2009 |
20090040919 | Transmission Using Nested OFDMA - A transmission of information within a wireless cellular network may include a first and second group of samples. A first group of samples is created comprising at least a first and a last subgroup, wherein the last subgroup is same as the first subgroup. A second group of samples created. A transformed set of samples produced by jointly transforming the created first and second group with a discrete Fourier transform (DFT). The transformed set of samples is expanded to produce an expanded set, and the expanded set is transformed with an inverse discrete Fourier transform (IDFT) to produce an OFDM symbol with a fractional payload. The first group of samples is a reference signal (RS), which is known to the receiver before the transmission occurs, while the second group of samples is information data. | 02-12-2009 |
20090042558 | Transmission of ACK/NACK Bits and their Embedding in the CQI Reference Signal - A transmission of information within a wireless cellular network may include a first and second type of information. A subframe is produced that includes a plurality of symbols, wherein at least one symbol is designated as a data symbol and at least one symbol is designated as a reference signal symbol that contains a pre-defined reference signal. The first type of information is embedded in the data symbols. If the second type of data is expected, then the second type of information is embedded in at least one reference symbol by quadrature amplitude modulating the pre-defined reference signal. The subframe is then transmitted from one node in the network to a second node. In some embodiments, if it is determined that the second node is not expecting the second type of information, then a discontinuous transmission (DTX) response is embedded in the reference symbol instead of the second type of information. | 02-12-2009 |
20090046645 | Uplink Reference Signal Sequence Assignments in Wireless Networks - Transmission of sequences in wireless networks from a user equipment (UE) includes various types of reference signals, such as a sounding reference signal (SRS) and a physical uplink control channel (PUCCH) symbol. The UE receives an indication of a reference signal sequence group number u, wherein physical uplink control channel (PUCCH) sequences are divided into groups having at least one sequence each and wherein sounding reference signal (SRS) sequences are divided into groups having at least one sequence each. The UE produces a sequence from an SRS sequence group with the sequence group number u when an SRS is to be transmitted and produces a sequence from a PUCCH sequence group with the sequence group number u when a PUCCH symbol is to be transmitted. The UE produces a transmission signal using the produced sequence. | 02-19-2009 |
20090067391 | Separate Rank and CQI Feedback in Wireless Networks - A transmission of information within a wireless network may include a first and second type of feedback information, wherein the second type of feedback information is derived based on the first type of feedback information. The first type of feedback information is embedded in a configured frame every T1 frames. The second type of feedback is embedded in a configured frame every T2 frames, wherein T1 is greater than or equal to T2. A sequence of frames is transmitted from one node in the network to a second node on an uplink control channel. | 03-12-2009 |
20090080500 | Reference Signal Structure for OFDM Based Transmissions - A method for transmitting a plurality of sequences across a plurality of bands of a wireless spectrum is described in which a first sequence is produced using a set of reference signal sequences, wherein the set of reference signal sequences comprises at least CAZAC sequences and near-CAZAC sequences. A second sequence is also produced. The first sequence is transmitted in a first band of the wireless spectrum, and the second sequence is transmitted in a second band of the wireless spectrum. The first and the second sequences are transmitted concurrently by a same user equipment. | 03-26-2009 |
20090109873 | Selective Rank CQI and PMI Feedback in Wireless Networks - Within a wireless network, feedback information is used to determine channel quality. A node in the network receives a configuration message indicating at least a first type of feedback information and a subset S | 04-30-2009 |
20090109908 | Transmission of Sounding Reference Signal and Scheduling Request in Single Carrier Systems - A transmission of information from a secondary to a primary node occurs in a plurality of transmission instances which are logical time durations. A secondary node receives an allocation of periodic transmission instances for a scheduling request indicator (SRI) and an allocation if periodic transmission instances for a sounding reference signal (SRS). In a particular transmission instance allocated for the transmission of both SRS and SRI, the secondary node transmits the SRI without transmitting the SRS if the SRI indicates a pending scheduling request; otherwise, the secondary node transmits the SRS without transmitting the SRI. | 04-30-2009 |
20090110114 | Open-Loop MIMO Scheme and Signaling Support for Wireless Networks - Transmission with multiple antennas in a wireless network is performed by selecting between adaptive precoding and fixed precoding based on a selection criterion. Transmission using spatial multiplexing with adaptive precoding is performed if the selection criterion is fulfilled. Transmission using spatial multiplexing with fixed preceding is performed if the selection criterion is unfulfilled. | 04-30-2009 |
20090129461 | Compression Code for Transferring Rate Matched Data Between Devices - A block of N-bit symbols is compressed to reduce transfer bandwidth between two devices. A plurality of locations within the block of N-bit symbols is identified in which a same known N-bit symbol is to be located. The known symbol in each of the plurality of locations is replaced with a substitute 1-bit symbol having a first value. Each remaining symbol in the block of N-bit symbols is marked with a marker bit having a second value. The compressed block of marked N-bit symbols and substitute symbols is transmitted from one device to another device and then decompressed by replacing the substitute symbols with known symbols and removing the markers to restore the original block. | 05-21-2009 |
20090175159 | Allocation and Logical to Physical Mapping of Scheduling Request Indicator Channel in Wireless Networks - A method for allocating resources for a scheduling request indicator (SRI) is disclosed. An SRI cycle period for use by user equipment (UE) within a cell is transmitted from a NodeB in a cell to UE within the cell. The NodeB transmits a specific SRI subframe offset and an index value to the particular UE within the cell. The specific SRI subframe offset and the index value enable the UE to determine a unique combination of cyclic shift, RS orthogonal cover, data orthogonal cover, and resource block number for the UE to use as a unique physical resource for an SRI in the physical uplink control channel (PUCCH). | 07-09-2009 |
20090196229 | ACKNAK and CQI Channel Mapping Schemes in Wireless Networks - A transmission of information from a secondary to a primary node occurs in a plurality of N logical time durations. The transmission from the secondary to primary node in a wireless network is obtained using an orthogonal covering sequence and a second sequence. Embodiments of the present invention mitigate interference by calculating a first orthogonal covering (OC) index and a second OC index from an indicator received from a serving base station (NodeB). A first index n | 08-06-2009 |
20090196366 | Transmission of Uplink Control Information with Data in Wireless Networks - Within a wireless network, feedback information from one node to another node is necessary to support various functions. The first node receives an allocation of resources for data transmission. The first node generates cyclic redundancy check (CRC) bits for a selected feedback control information type and encodes the selected feedback information and the CRC bits. The encoding of the feedback information and the CRC bits is adaptive based the amount of allocated resources. The encoded feedback information and CRC bits are then transmitted to the other node using a subset of the allocated resources on the physical shared channel that is normally used only for data transmissions. | 08-06-2009 |
20090199055 | Interleaver Design with Unequal Error Protection for Control Information - For transmission of a block of control information within a wireless network, the control information is interleaved to form an ordered set of control bits, wherein more important information bits of the control information are placed into a first portion of the ordered set of control bits, with less important information bits of the control information placed into a second portion of the ordered set of controls bits. The ordered set of control bits is encoded to form an encoded block of data. The encoded block of data is transmitted to a serving base station, wherein bits from the first portion of the ordered set of control bits will statistically have a lower bit error rate (BER) than bits from the second portion of the ordered set of control bits during transmission. | 08-06-2009 |
20090201825 | Partial CQI Feedback in Wireless Networks - Within a wireless network, feedback information from user equipment (UE) to a control node (eNodeB) is necessary to support various functions. A UE receives an allocation from the eNodeB comprising a plurality of periodic transmission instances for a channel quality indicator (CQI) and a schedule comprising a plurality of periodic transmission instances for a rank indicator (RI), wherein the CQI comprises RI and other CQI fields. The UE then transmits an RI without transmitting the other CQI fields in a transmission instance allocated for both RI and other CQI fields. | 08-13-2009 |
20090203383 | Transmission of Feedback Information on PUSCH in Wireless Networks - A transmission of feedback information from a secondary to a primary node occurs in a plurality of N logical time durations. The secondary node receives an allocation of resources comprising a plurality of resource elements on an uplink shared data channel. The secondary node generates feedback information in response to transmissions from the primary node and normally transmits feedback information to the primary node on a control channel. On occasion, the secondary node receives a trigger from the primary node. In response to the trigger, the secondary node transmits the feedback information using a subset of the allocated resource elements on the uplink shared data channel. | 08-13-2009 |
20090207793 | ACKNAK Repetition Schemes in Wireless Networks - ACK/NAK repetition may be necessary to provide sufficient coverage for cell edge UEs. For a coverage limited UE, a NodeB may inform the UE that ACK/NAK repetition is needed. Such information can be explicitly signaled to the UE via DL control channels or conveyed through higher layer signaling. Further, a specific resource for ACK/NAK repetition and the number of repeated transmissions of ACK/NAK are further signaled to the UE. | 08-20-2009 |
20090207797 | Mapping between Logical and Physical Uplink Control Resource Blocks in Wireless Networks - A transmission of information from a secondary to a primary node occurs in a plurality of N logical time durations on an uplink channel in a wireless network. A scheme for mapping between logical uplink control channel (PUCCH) resource blocks (RBs) and physical RBs (PRBs) used by PUCCH is described. A logical uplink control resource block index n | 08-20-2009 |
20090213769 | Transmission of Bundled Feedback in Wireless Networks - A transmission of information between a secondary to a primary node in a wireless network occurs in a plurality of N logical time durations. Bundled feedback information for multiple DL transmissions is provided in one UL transmission. Each DL transmission is indicated by a DL grant comprising an M-bit downlink assignment indicator (DAI) field. The primary node increments the value of the M-bit DAI field in successively transmitted DL grants. The secondary node examines the value of the M-bit DAI field in received DL grants, to determine the bundled feedback information. | 08-27-2009 |
20090222777 | Links and Chains Verification and Validation Methodology for Digital Devices - The links and chains (LNC) of this invention is an applications verification and validation (AVV) methodology. LNC is a hierarchical and systematic approach emphasizing conservation and reuse of effort expended. LNC creates objective metrics for validation. This invention ensures that the device will work in a system environment. LNC is an independent and complementary validation of the design before committing release to tape-out. The chip support library (CSL) and diagnostics used by LNC are natural outputs of the validation and are thus gating items to tape-out release. This ensures a fully tested device. | 09-03-2009 |
20090232070 | Data and Control Multiplexing in PUSCH in Wireless Networks - Transmission of information in a wireless network is performed by allocating a channel from a transmitter to a receiver. The channel has at least one time slot with each time slot having a plurality of symbols. Each slot contains at least one reference symbol (RS). As information becomes available for transmission, it is classified as prioritized information (PI) and other information. One or more priority symbols are generated using the digital samples of the priority information. Other symbols are generated using the other data. Priority symbols are transmitted on the channel in a manner that separation of priority symbol(s) and a reference symbol does not exceed a time duration of one symbol. For example, Rank Indicator (RI) is transmitted using symbol k, ACKNAK is transmitted using symbol k+1; and the reference signal (RS) is transmitted using symbol k+2, wherein symbols k, k+1, and k+2 are consecutive in time. The other symbols are transmitted in available locations. | 09-17-2009 |
20090232087 | User Equipment Multiplexing In Downlink Multiuser, Multiple Input Multiple Output Orthogonal Frequency Division Multiple Access - This invention is a method of downlink, multiuser, multiple input, multiple output communication between a single base station and plural user equipment. Resource buffers are distributed into sub-bands. Each user equipment is assigned to a sub-band with at least one sub-band assigned plural user equipment. The base station transmits user equipment according to assigned sub-bands. A single user equipment may be assigned one sub-band while plural user equipment are assigned to another sub-band. In one embodiment the base station has N transmit antennas. N user equipment is assigned to a first sub-band and less than N user equipment is assigned to a second sub-band. In another embodiment a first second user equipment is assigned a first sub-band and the first and a third user equipment are assigned to a second sub-band. | 09-17-2009 |
20090239568 | SCHEDULING REQUEST USAGE IN DRX MODE IN WIRELESS NETWORKS - A cell within cellular network includes user equipment (UE) that transmits data to a base station (eNB). When a UE does not have data to transmit, it may enter a low power mode (DRX) having silent intervals during which the eNB does not expect to receive a transmission from the UE and the UE is not required to monitor DL control channels from the eNB. While in DRX mode, the UE may detect an event, such as data ready for transmission or a need to request a timing adjustment (TA) update. The UE transmits a scheduling request indicator (SRI) to the eNB in response to detection of the event, wherein the SRI carries information identifying the triggering event. | 09-24-2009 |
20090279459 | Cell Specific Sounding Reference Signal Sub-Frame Configuration - A method of wireless communication including a plurality of fixed base stations and a plurality of mobile user equipment with each base station transmitting to any user equipment within a corresponding cell a sounding reference signal sub-frame configuration indicating sub-frames when sounding is permitted. Each user equipment recognizes the sounding reference signal sub-frame configuration and sounds only at permitted sub-frames. Differing cells may have differing sounding reference signal sub-frame configurations. There are numerous manners to encode the transmitted information. | 11-12-2009 |
20100124291 | Receivers for Embedded ACK/NAK in CQI Reference Signals in Wireless Networks - Within a wireless network, uplink control information (UCI) transmitted by user equipment is received by a base station. The UCI includes a least two elements, a first set of symbols produced using a first information element and a second set of symbols produced using a second information element. At least a first metric is produced using the first set and the second set of received symbols. The first information element may then be detected using the first metric. | 05-20-2010 |
20100172340 | Enabling Coordinated Multi-Point Reception - This invention measures the propagation delay τ | 07-08-2010 |
20100210256 | Transmission of Bundled ACK/NAK Bits - This invention is applicable to wireless communication between a user equipment (UE) and a base station using frames where at least one uplink (UL) is assigned a subframe to respond to a plurality of DL assigned subframes. This invention is an improvement in the acknowledge (ACK) or non-acknowledge (NAK) response by the UE. The UE generates an ACK or NAK dependent upon whether a DL communication is correctly received. For an UL subframe assigned to respond to communications on plural DL subframes, the UE logically combines plural ACK/NAK responses into a single bundled response for transmission to the base station. This logical combining produces a bit in a first digital state if all said responses are ACKs and in a second opposite digital state if any response is a NAK. | 08-19-2010 |
20100214937 | Rank Indicator Offset for Periodic CQI Reporting with Periodicity of One - This invention prevents a periodically reported Rank Indicator from interfering with a similarly periodically reported wideband and subband channel quality indicator. Such interference is disadvantageous because it may eliminate wideband channel quality indicator reporting or eliminate each first bandwidth part of subband channel quality indicator reporting. Proper selection of the rank indicator reporting periodicity and offset relative to the wideband and subband channel quality indicator reporting periodicity prevents this interference. | 08-26-2010 |
20100215109 | Layer Mapping for Up Link Single User Multiple Input Multiple Output Wireless Telephony - This invention is a method and an apparatus to up link transmission of data from a user equipment to a base station for single user multiple input, multiple output. This invention includes receiving at least one codeword, permuting the received codewords, precoding the permuted codewords and transmitting the predecoded codewords on plural antennas. The codewords may be permuted by layer permutation or by codeword permutation. | 08-26-2010 |
20100272006 | Design of In-Band Backhaul for Wireless Relays in Wireless Networks - This invention extends the coverage and improves the capacity of wireless communication networks using relay nodes. The relay nodes are wirelessly connected to the base station. The base station uses the same radio access technology for a link between the base station and user equipment and between the base station and the relay node. The relay node uses the same radio access technology for a link between the base station and the relay node and between the relay node and the user equipment. The relay node supports at least a Physical Layer (PHY), a Medium Access Control (MAC) sub-layer and a Radio Link Control (RLC) sub-layer protocol. | 10-28-2010 |
20100273495 | Predecoding for Joint Processing Coordinated Multi-Point Transmission - This invention is a method of predecoding for joint processing coordinated multi-point transmission. The invention identifies for a particular transmission the cooperating point and the transmit antenna. The invention selects a code by reference to a selected one of a super-cell codebook for each combination of cooperating point and transmit antenna and a multi-cell codebook for each transmit antenna regardless of the cooperating point. | 10-28-2010 |
20100309775 | Transmission Using Nested OFDMA - A transmission of information within a wireless cellular network may include a first and second group of samples. A first group of samples is created comprising at least a first and a last subgroup, wherein the last subgroup is same as the first subgroup. A second group of samples created. A transformed set of samples produced by jointly transforming the created first and second group with a discrete Fourier transform (DFT). The transformed set of samples is expanded to produce an expanded set, and the expanded set is transformed with an inverse discrete Fourier transform (IDFT) to produce an OFDM symbol with a fractional payload. The first group of samples is a reference signal (RS), which is known to the receiver before the transmission occurs, while the second group of samples is information data. | 12-09-2010 |
20100329194 | Concurrent Transmission of Multiple Acknowledge/Not Acknowledge and Scheduling Request Indicator in Time Division Duplex Uplink Signaling - This invention is a transmission scheme for multi-ACK/NAK and SRI in TDD. The described scheme enables using DAI as pure counter. QPSK is adopted as the modulation scheme in this invention which guarantees satisfactory detection performance. Link level simulations show that the event of one DL grant pass followed by three consecutive DL grant misses is of low probability. | 12-30-2010 |
20120014243 | Allocation and Logical to Physical Mapping of Scheduling Request Indicator Channel in Wireless Networks - A method for allocating resources for a scheduling request indicator (SRI) is disclosed. An SRI cycle period for use by user equipment (UE) within a cell is transmitted from a NodeB in a cell to UE within the cell. The NodeB transmits a specific SRI subframe offset and an index value to the particular UE within the cell. The specific SRI subframe offset and the index value enable the UE to determine a unique combination of cyclic shift, RS orthogonal cover, data orthogonal cover, and resource block number for the UE to use as a unique physical resource for an SRI in the physical uplink control channel (PUCCH). | 01-19-2012 |
20120236773 | TRANSMISSION OF ACK/NACK BITS AND THEIR EMBEDDING IN THE CQI REFERENCE SIGNAL - A transmission within a wireless cellular network may include a first and second type of information. A subframe includes a plurality of symbols, at least one symbol is designated as a data symbol and at least one symbol is designated as a reference signal symbol that contains a pre-defined reference signal. The first type of information is embedded in the data symbols. If the second type of data is expected, then the second type of information is embedded in at least one reference symbol by quadrature amplitude modulating the pre-defined reference signal. The subframe is then transmitted from one node in the network to a second node. If it is determined that the second node is not expecting the second type of information, then a discontinuous transmission (DTX) response is embedded in the reference symbol instead of the second type of information. | 09-20-2012 |
20120320870 | Time-Sharing of Sounding Resources - This invention is a method for time-sharing sounding resources. A first embodiment defines one common sounding period for all user equipment and all sounding resources. A second embodiment allows for different sounding periods so long as each individual sounding resource uses only one sounding period. A third embodiment offers the most flexibility in sharing of the sounding resources by permitting changes in time. The first option is a special case of the second option. The second option is a special case of the third option. | 12-20-2012 |
20130155956 | ENABLING COORDINATED MULTI-POINT RECEPTION - This invention measures the propagation delay τ | 06-20-2013 |
20130301538 | Reference Signal Structure for OFDM Based Transmissions - A method for transmitting a plurality of sequences across a plurality of bands of a wireless spectrum is described in which a first sequence Is produced using a set of reference signal sequences, wherein the set of reference signal sequences comprises at least CAZAC sequences and near-CAZAC sequences. A second sequence is also produced. The first sequence is transmitted in a first band of the wireless spectrum, and the second sequence is transmitted in a second band of the wireless spectrum. The first and the second sequences are transmitted concurrently by a same user equipment. | 11-14-2013 |
20140029589 | TRANSMISSION OF ACK/NACK BITS AND THEIR EMBEDDING IN THE REFERENCE SIGNAL - Transmitting a ACK/NACK response in a wireless cellular network by mapping the data value into a cyclic shifted version of a reference signal. A subframe is formed with a plurality of symbols with certain symbols designated as reference signal (RS) symbols. The receiver and transmitter both know when an ACK/NACK response is expected. If an ACK/NACK response is not expected, then an RS is inserted in the duration of symbols designated as RS symbols. If an ACK/NACK response is expected, then the ACK/NACK response is embedded in one or more of the symbols designated as RS symbols. The subframe is transmitted to a receiver, and the receiver can determine the ACK/NACK value in the RS symbol, if present, and also use the RS symbol for coherent demodulation of a CQI (channel quality indicator) or data. | 01-30-2014 |
20140126525 | Mapping Between Logical and Physical Uplink Control Resource Blocks in Wireless Networks - A transmission of information from a secondary to a primary node occurs in a plurality of N logical time durations on an uplink channel in a wireless network. A scheme for mapping between logical uplink control channel (PUCCH) resource blocks (RBs) and physical RBs (PRBs) used by PUCCH is described. A logical uplink control resource block index n | 05-08-2014 |
20140321397 | ACKNAK AND CQI CHANNEL MAPPING SCHEMES IN WIRELESS NETWORKS - A transmission of information from a secondary to a primary node occurs in a plurality of N logical time durations. The transmission from the secondary to primary node in a wireless network is obtained using an orthogonal covering sequence and a second sequence. Embodiments of the present invention mitigate interference by calculating a first orthogonal covering (OC) index and a second OC Index from an indicator received from a serving base station (NodeB). A first index n1 is derived and a second index n2 is derived using the first index n1. A first orthogonal covering (OC) index and a first cyclic shift (CS) is determined using the derived index n1. A second OC and a second CS is derived using the derived index n2. A first slot of a subframe is generated using the OC indexed by the first OC index and the first CS and a second slot of the subframe is generated using the OC indexed by the second OC index and the second CS. | 10-30-2014 |