摘要:
A STA, AP and method of reducing channel allocation control overhead are disclosed. The STA receives a high-efficiency Physical Layer Convergence Protocol Data Unit (HE PPDU) having a HE SIG-A field followed by a HE SIG-B field. The SIG-B field has user-specific subfields (USS), each having a stream allocation value (SAV) for an associated STA and associated with a unique stream index number (SIN) indicating a position among the USSs. The SINs increase with increasing position from the SIG-B field. The number of channels allocated in each USS is constrained to stay the same or monotonically change with increasing SIN. The STA determines channel allocation from the SAV, SIN and number of USSs. The channels may be allocated non-contiguously. The SAVs in most USSs may indicate an allocation to increasing or decreasing channels and in the final USS to at least one channel starting from a final or initial channel.
摘要:
Apparatuses, methods, and computer readable media for indicating a communication and information in a signal field are disclosed. A high-efficiency wireless local area network (HEW) device comprises circuitry is disclosed. The circuitry may be configured to: generate a HEW packet comprising a legacy signal (L-SIG) field, where the L-SIG field comprises a plurality of subcarriers, and an R-L-SIG field, where the R-L-SIG field comprises a repeat of the plurality of subcarriers partitioned into a plurality of groups, and where information is encoded into one or more groups of the plurality of groups by a same modulation to each subcarrier partitioned into the corresponding group. A HEW device comprising circuitry is disclosed. The circuitry may be configured to: receive a L-SIG field; receive a R-L-SIG field; and determine whether the R-L-SIG field is a repeat of the L-SIG field with piggybacked information.
摘要:
Embodiments herein relate to wireless communication using combined channel training and physical layer header (SIG) signaling. Devices that comply with the 802.11ax or High Efficiency WLAN (HEW) standard may generate and transmit packets that include such combined information. The combined information may be beamformed to a receiver device via an OFDM signal, which may be decoded by the receiver device to obtain subsequent data included in the signal. For example, initial training symbols associated with channel training subcarriers in the signal may be detected and used to perform a rough estimate of the channel. The rough estimate may thereafter be refined using data symbols detected from adjacent data subcarriers using the channel training symbols. In this way, data subcarriers may also be used to determine a channel response along with channel training subcarriers. Channel training information may be transmitted with data, such as user-specific information, in a single symbol.
摘要:
Embodiments of an eNB and method of transmitting PDCCHs are generally described herein. In some embodiments, the eNB may be configured to transmit PDCCHs that are based on a UE-specific reference signal (i.e., a UE-RS). In these embodiments, the UEs may be able to demodulate their PDCCH using a demodulation reference signal (DM-RS) that is specific to the UE (e.g., instead of a common reference signal). The PDCCHs disclosed herein may be suitable the Uu interface of an LTE-A system.
摘要:
This disclosure describes systems, and methods related to parallel channel training in communication networks. A first computing device comprising one or more processors and one or more transceiver component may receive a first connection request from a second computing device, and a second connection request from a third computing device. The first computing device may send the first training field to the second computing device based at least in part on the first connection request and sending in parallel, the second training field to the third computing device based at least in part on the second connection request. The first computing device may establish a first spatial channel stream with the second computing device based at least in part on the first training field and a second spatial channel stream with the third computing device based at least in part on the second training field.
摘要:
Embodiments herein relate to wireless communication using combined channel training and physical layer header (SIG) signaling. Devices that comply with the 802.11 ax or High Efficiency WLAN (HEW) standard may generate and transmit packets that include such combined information. The combined information may be beamformed to a receiver device via an OFDM signal, which may be decoded by the receiver device to obtain subsequent data included in the signal. For example, initial training symbols associated with channel training subcarriers in the signal may be detected and used to perform a rough estimate of the channel. The rough estimate may thereafter be refined using data symbols detected from adjacent data subcarriers using the channel training symbols. In this way, data subcarriers may also be used to determine a channel response along with channel training subcarriers. Channel training information may be transmitted with data, such as user-specific information, in a single symbol.
摘要:
Methods, apparatuses, and computer readable media for location measurement reporting in a wireless network are disclosed. An apparatus of a responder station is disclosed, the apparatus comprising processing circuitry configured to derive bits from a temporary key, and generate a first sequence and a second sequence using the bits, wherein the first sequence and second sequence comprise one or more symbols. The processing circuitry is further configured to concatenate the first sequence and the second sequence to form a new first sequence comprising the first sequence and the second sequence, and concatenate a modified first sequence and a modified second sequence to form a new second sequence. The processing circuitry may be configured to repeat a number of times the concatenate the first sequence through the concatenate the modified first sequence.
摘要:
Systems, apparatus, and methods to provide an indication of frequency resource unit (RU) allocation from a wireless access point (AP) to one or more station devices (STA) are disclosed. The AP may be configured to generate a protocol data unit including a high efficiency wireless (HEW) preamble that indicates the RU allocation corresponding to each of the STA. The indication of the RU allocation for each of the STA, as disclosed herein, may be encoded in fewer bits than providing a bitmap of the RU allocation for each of the STA. A predetermined RU pattern may be used to map RU (e.g., 26 tone units, 52 tone units, etc.) to a RU allocation index. This RU allocation pattern may be efficiently communicated to each of the STAs in the HEW preamble of the protocol data unit.
摘要:
An apparatus may include a transmitter arranged to wirelessly transmit channel status reports for channels within a transmission band to a base station and a processor. The apparatus may further include a rank adaptation (RA) module operable on the processor to direct the transmitter to send a multiplicity of sub-band channel quality indicator (CQI) reports, each sub-band CQI report comprising a measurement of a respective sub-band of the transmission band and a multiplicity of rank indicator (RI) reports, where each sub-band CQI report is accompanied by an RI report. The apparatus may further include a digital display arranged to display information transmitted via the base station to the apparatus. Other embodiments are disclosed and claimed.
摘要:
A physical channel processor on a wireless device and method for precoding for spatial multiplexing in an open-loop multiple-input multiple-output (MIMO) mobile communication system is disclosed. The method comprises the operation of receiving an input vector block from a layer mapper. The input vector block includes user equipment-specific reference signals (UE-RSs) or data in a physical downlink shared channel (PDSCH). The operation of generating a large delay cyclic delay diversity (CDD) vector block from the input vector block using a precoder configured for large delay CDD on an antenna port follows. The data can be resource element mapped with UE-RSs or channel-state information reference signals (CSI-RSs) in a physical resource block (PRB).