Patent classifications
H04J11/005
UE Baseband Capability Signaling
According to some embodiments, a method of signaling device capabilities for use in a wireless device comprises compiling frequency band combinations supported by the wireless device. The method further comprises compiling a set of device capabilities supported by the wireless device and assembling a capability message. The capability message includes: the frequency band combinations; combinations of the device capabilities supported by the wireless device; and for each of the one or more frequency band combinations, the capability message includes a first indication of one or more device capabilities supported by the frequency band combination. The first indication of the device capabilities supported by the frequency band combination comprises, for each band of the plurality of frequency bands, an indication of one of the one or more combinations of the device capabilities supported by the band when used in combination with the other bands in the frequency band combination.
INTERFERENCE MITIGATION THROUGH SINR-BASED ITERATIVE DISTRIBUTED BEAM SELECTION
Systems and methods for iterative distributed beam selection include a device including at least one of a first head wearable display (HWD), a second HWD, a first console or a second console. The device detects a predefined condition. The device performs a first distributed beam selection responsive to detecting the predefined condition. Performing the first distributed beam selection includes performing beamforming to provide a first plurality of beams for a first link between the first HWD and the first console, selecting a first beam of the first link with a highest signal-to-interference-plus-noise ratio (SINR) from the first plurality of beams, performing beamforming to provide a second plurality of beams for a second link between the second HWD and the second console while the first beam of the first link is active, and selecting a second beam of the second link with a highest SINR from the second plurality of beams.
Channel Estimation and Equalization in OFDM Systems
A method for estimating a signal-to-interference-plus-noise ratio at a receiver of a wireless communication system OFDM signals may include: determining an estimate ŝ.sub.serving of the signal power of a serving cell of the communication system based on the channel impulse response estimated for the serving cell, determining an estimate ŝ.sub.interfering of the signal power of one or more interfering cells of the communication system based on the channel impulse response estimated for the one or more interfering cells, and determining an estimate of the SINR based on the determined estimate of the signal power of the serving cell and the determined estimate of the signal power of the one or more interfering cells. A Method for equalization of received symbols at a receiver of a wireless communication system using OFDM signals may include: determining an equalizer filter and applying the equalizer filter onto the received signal for equalization of the signal, wherein the equalizer filter is determined in the time domain based on an estimated channel impulse response, an estimated noise covariance and an estimated received symbol covariance.
SYSTEMS AND METHODS FOR MULTI-CARRIER SIGNAL ECHO MANAGEMENT USING PSEUDO-EXTENSIONS
A receiver is configured to capture a plurality of linearly distorted OFDM symbols transmitted over a signal path. The receiver forms the captured OFDM symbols into an overlapped compound data block that includes payload data and at least one pseudo-extension, processes the overlapped compound block with circular convolution in the time domain using an inverse channel response, or frequency domain equalization, to produce an equalized compound block, and discards end portions of the equalized block to produce a narrow equalized block. The end portion corresponds with the pseudo-extension, and the narrow block corresponds with the payload data. The receiver cascades multiple narrow equalized blocks to form a de-ghosted signal stream of OFDM symbols. The OFDM symbols may be OFDM or OFDMA, and may or may not include a cyclic prefix, which will have a different length from the pseudo-extension.
METHODS, SYSTEMS AND APPARATUSES FOR NETWORK ASSISTED INTERFERENCE CANCELLATION AND/OR SUPPRESSION (NAICS) IN LONG-TERM EVOLUTION (LTE) SYSTEMS
A method implemented by a Wireless Transmit/Receive Unit (WTRU) includes receiving a DeModulation Interference Measurement (DM-IM) resource, determining an interference measurement based on the DM-IM resource, and demodulating a received signal based on the interference measurement. An interference is suppressed based on the interference measurement. At least one DM-IM resource is located in a Physical Resource Block (PRB). The DM-IM resource is located in a PRB allocated for the WTRU. The DM-IM resource is a plurality of DM-IM resources which form a DM-IM pattern, and the DM-IM pattern is located on a Physical Downlink Shared Channel (PDSCH) and/or an enhanced Physical Downlink Shared Channel (E-PDSCH) of at least one Long Term Evolution (LTE) subframe. The DM-IM resources are different for different Physical Resource Blocks (PRB) in the LTE subframe. The DM-IM is located in a Long Term Evolution (LTE) Resource Block (RB), and the DM-IM pattern is adjusted.
Grouping and use of short sequence signals
New sequences have been proposed and/or adopted for short Physical Uplink Control Channel communications between base stations and UEs. In an exemplary embodiment, a UE communicates with a base station based on sequence groups that include the new sequences, where the new sequences are allocated to different sequence groups based, at least in part, on correlations with other existing sequences included in individual sequence groups.
Sequence determining method and apparatus
Embodiments of the present disclosure provide, among other implementations, sequence determining methods. One example method provides a sequence group, and one sequence group number is corresponding to at least two sequences, where one sequence is used for mapping to consecutive subcarriers, and at least one other sequence is used for mapping to equally-spaced subcarriers. In some embodiments of the present disclosure, as high as possible cross-correlation between a sending signal obtained after equally-spaced mapping is performed on a sequence in a sequence group can be determined, and a sending signal obtained after continuous mapping is performed on another sequence in the group.
Phase tracking reference signal (PT-RS) configuration
A user equipment (UE) can include processing circuitry configured to decode downlink control information (DCI) from a base station, the DCI including a modulation coding scheme (MCS) index and physical uplink shared channel (PUSCH) allocation. A demodulation reference signal (DM-RS) is encoded for transmission to the base station within a plurality of DM-RS symbols based on the PUSCH allocation. A phase tracking reference signal (PT-RS) time domain density is determined based on the MCS index and a number count of the DM-RS symbols for the DM-RS transmission. The PT-RS is encoded for transmission using a plurality of PT-RS symbols based on the determined time domain density. The plurality of symbols includes one or both of front-loaded DM-RS symbols and additional DM-RS symbols.
Method for signaling in a cellular telecommunications network
A method for implementation by a base station controlling at least one cell of the network is provided. It may comprise allocating to an interferer terminal attached to the cell and identified by the base station as being capable of interfering with at least one communication established by this terminal or to a neighbor cell an open temporary network identifier shared by a predetermined number of interferer terminals attached to the cell and a code making it possible to identify the interferer terminal among these interferer terminals, publishing this identifier, sending to the interferer terminal, in at least one configuration message, of the open temporary network identifier and the code and inserting this code, in a field of a physical control channel allocating resources for transmitting over the cellular network to the interferer terminal, this physical channel being encoded using the open temporary network identifier and emitted on the network.
Interference measurement report with indication of inter-cell interference burst dynamic
In an aspect, a UE measures interference from one or more neighbor base stations on a set of resources over a period of time, and determines an interference burst dynamic associated with the set of resources based on the measured interference over the period of time. The UE transmits an interference measurement report comprising an indication of the interference burst dynamic to a serving base station of the UE. The serving base station performs at least one action based in part upon the prediction.