168results about "Transmission rate adaptation" patented technology

A modulation and coding scheme indication method and a corresponding apparatus in a wireless local area network system that supports one or more of a next-generation Wi-Fi protocol of IEEE 802.11ax (for example, 802.11be, Wi-Fi 7, or EHT), a next-generation Wi-Fi protocol of IEEE 802.11be (for example, 802.11bn, Wi-Fi 8, or UHR), Wi-Fi AI, a millimeter wave (mm Wave), an ultra wideband (UWB), and sensing (sensing). A method includes: generating a physical layer protocol data unit PPDU, where the PPDU includes a first field and a second field, the first field indicates a first modulation and coding scheme MCS group, and the second field indicates a number of spatial streams corresponding to one or more MCSs in the first MCS group; and sending the PPDU. This can reduce bit overheads.

A first communication device that is configured to communicate with a second communication device having circuitry configured to obtain user data length information indicating the length of one or more data units of user data to be transmitted to the second communication device; obtain at least two transmission parameter sets each including transmission parameters for use in the transmission of the user data, the at least two transmission parameter sets having one or more different parameter values; determine, from the user data length information and the at least two transmission parameter sets, encoding parameters that are identical regardless which transmission parameter set is used for transmission of the user data; encode the user data into transmission data units according to the determined encoding parameters; and modulate and transmit the transmission data units to the second communication device according to one of the transmission parameter sets.

This invention discloses a speed-based transmission scheme switching method, a communication system, and a test and / or measurement system. A speed-based transmission scheme switching method for switching transmission schemes between a transmitter node (12) and a receiver node (14) is described. The speed-based transmission scheme switching method includes the steps of: determining at least one speed parameter, wherein the at least one speed parameter includes the speed of the transmitter node (12), the speed of the receiver node (14), and / or the relative speed between the transmitter node (12) and the receiver node (14); and switching between a first transmission scheme associated with a lower range of the at least one speed parameter and a second transmission scheme associated with a higher range of the at least one speed parameter based on the determined at least one speed parameter. Furthermore, a communication system (10) and a test and / or measurement system are described.

A method, system, or apparatus may multiplex a physical sidelink control channel (PSCCH) and a Physical Sidelink Shared Channel (PSSCH). The system may apply a power boost to the PSCCH. Additionally, the method, system, or apparatus may power boost a portion of the PSSCH that corresponds to the frequency resources used by the PSSCH.

Provided are a communication method and device, relating to the technical field of communication, the method comprising: a first UWB device can determine the format of a PPDU sent by a second UWB device according to the device type of the first UWB device and the type of the second UWB device, and the type of the second UWB device is indicated by first indication information, which indicates that the corresponding PPDU format can be determined between the first UWB device and the second UWB device without a complicated interaction process, i.e. the interaction process of negotiating the PPDU structure is simplified, and thus the communication delay can be reduced.

The present disclosure relates to assistance indication of resource reservation in sidelink. Techniques discussed herein can facilitate assistance indication of resource reservation in sidelink. One example aspect is a user equipment (UE) comprising: a memory interface; and processing circuitry communicatively coupled to the memory interface and configured to: generate a physical sidelink control channel (PSCCH) message related to a first stage sidelink control information (SCI), wherein the first stage SCI comprises a first indication related to a SCI assistance request; and cause transmission of the first stage SCI.

A speed-based transmission scheme switching method of switching a transmission scheme between a transmitter node and a receiver node is described. The method includes: determining at least one speed parameter, wherein the at least one speed parameter includes a speed of the transmitter node, a speed of the receiver node, and / or a relative speed between the transmitter node and the receiver node; and switching, based on the at least one speed parameter determined, between a first transmission scheme being associated with a lower range of the at least one speed parameter and a second transmission scheme being associated with a higher range of the at least one speed parameter. Further, a communication system as well as a test and / or measurement system are described.

A first multiple-output (MIMO) communication method has the steps of: generating a signaling for one or more devices, and transmitting the signaling to the one or more devices; for each of the one or more devices, the signaling is for indicating a plurality of streams allocated to the device and a plurality of modulation and coding system (MCS) indices each corresponding to one of the streams. Accordingly, a second MIMO communication method has the steps of receiving a signaling from a device to obtain a plurality of streams and a plurality of MCS indices corresponding to the streams, and transmitting signals to the device using the streams with parameters of each stream defined by the corresponding MCS index. In some embodiments, the signaling is carried in a trigger frame for uplink MIMO communication, or in a physical layer protocol data unit for downlink MIMO communication.

This application discloses a capability indication method, a capability determination method, and an apparatus in a wireless local area network. The capability indication method includes a first device determining capability information and transmitting the capability information to a second device. The capability information includes a nominal packet padding subfield, which indicates the corresponding nominal packet padding value used when the second device transmits a physical layer data packet to the first device. The nominal packet padding value is for all NSS and all RU allocations supported by the first device, and for at least two modulation schemes used by the second device on a configured frequency domain resource or configured spatial stream. When the second device transmits a PPDU to the first device using at least two modulation schemes, the method allows the nominal packet padding value determined by the second device to have sufficient time to process the PPDU received from the second device.

A transmission method and device based on preamble puncturing in a wireless LAN system are disclosed. A method by which a first STA performs communication in a wireless LAN system, according to one embodiment of the present disclosure, comprises the steps of: receiving a first PPDU from a second STA; acquiring information related to at least one first punctured resource unit; and transmitting, in response to the first PPDU, to the second STA, a second PPDU based on at least one second punctured resource unit, wherein the at least one first punctured resource unit can be at least one part of the at least one second punctured resource unit.

This application discloses an information determining method and an apparatus, the information determining method includes: receiving indication information; and when the indication information indicates two TCI-states, and the indication information indicates that a quantity of consecutive transmissions of the same transport block is greater than 1, receiving the same transport block by using the two TCI-states at different time; or when the indication information indicates two TCI-states, and the indication information does not indicate the quantity of consecutive transmissions of the same transport block, simultaneously receiving the same transport block by using the two TCI-states, wherein the two TCI-states correspond to two code division multiplexing (CDM) groups of demodulation reference signal (DMRS) port.

Methods and apparatuses for NTN feedback disabling via downlink control information are disclosed. A UE comprises a processor; and a transceiver coupled to the processor, wherein the processor is configured to cause the UE to: receive a control message scheduling a set of transport blocks, wherein the set of transport blocks comprise one or more transport blocks, the control message comprising a first field indicating whether hybrid automatic repeat request (HARQ) feedback is enabled or disabled for the set of transport blocks, the first field further indicating a modulation coding scheme (MCS) index, a resource associated with the HARQ feedback, a HARQ process number, a new data indicator (ND I), or any combination thereof; and receive the set of transport blocks based at least in part on the received control message.

The application relates to a satellite link dynamic regulation device and method, which comprises an upper layer policy scheduler, a middle layer predictor and a lower layer real-time controller. The upper layer policy scheduler acquires a link state prediction result output by the middle layer predictor and a current link state reported by the lower layer real-time controller, selects an initial strategy, a dynamic regulation strategy or a recovery normal communication strategy according to a task demand, and issues a link parameter configuration instruction. The middle layer predictor uses a pre-trained random forest model to perform link state prediction based on an input feature set extracted in a historical sliding window. The lower layer real-time controller executes transmission power and modulation and coding scheme adjustment according to the instruction, performs emergency regulation when link margin abnormality occurs, and gradually adjusts to a normal communication mode after link recovery. Through the application, dynamic prediction and rapid self-adaptive regulation of a satellite link can be realized.

To provide a system, a method, and means for transmitting a Phase Noise Reference Signal (PNRS).SOLUTION: A method includes, in a wireless transmission / reception unit (WTRU), steps of receiving scheduling information for physical uplink shared channel (PUSCH) transmission, the scheduling information including displaying a set of a physical resource block (PRB) and a modulation coding scheme (MCS) level, determining density for PNRS transmission on the basis of at least one of an MCS level, a frequency band for the PUSCH transmission, and subcarrier spacing for PUSCH transmission, and transmitting the PUSCH in a scheduled set of the PRBs using the determined PNRS density.SELECTED DRAWING: Figure 17

This application discloses a communication method and apparatus, and relates to the communication field, to resolve a problem of how to flexibly configure a DMRS pattern. The method includes: determining, by a terminal device, at least one parameter based on first MCS information after receiving the first MCS information, where the at least one parameter is used to indicate a first reference signal pattern, so that the terminal device sends an uplink reference signal based on the first reference signal pattern; and determining, by a network device, the at least one parameter based on the first MCS information, where the at least one parameter is used to indicate the first reference signal pattern, so that the network device receives the uplink reference signal based on the first reference signal pattern.

This disclosure provides systems, methods and apparatuses for selectively using spatial reuse (SR) transmissions in the presence of an overlapping basic service set (OBSS) transmission. In some implementations, a wireless communication device may transmit data to another wireless communication device using SR packets in the presence of an OBSS transmission or interference only when the signal strength of SR packets received at the other wireless communication device is greater than an amount of signal degradation of the OBSS transmission caused by the SR transmission.

A method of transmitting a transport block by a device in a wireless communication system and a device using the method are provided. The method generates multiple pieces of data and generates multiple MAC PDUs each including at least one of the multiple pieces of data. The multiple MAC PDUs have different logical channel priorities (importance levels) and one MAC PDU is transmitted using one transport block. Multiple transport blocks comprise a first transport block including a MAC PDU having a high logical channel priority and a second transport block including a MAC PDU having a low logical channel priority. The first transport block always comprises one code block, and the second transport block comprises one or multiple code blocks.

Described herein are systems, methods, and instrumentalities associated with constellation schemes. A wireless transmit / receive unit (WTRU) may receive a message from a network device, wherein the message may indicate at least an uplink grant, a first set of modulation parameters, and a second set of modulation parameters. The WTRU may determine that a first media data unit and a second media data unit are to be transmitted to the network device. If the first media data unit differs from the second media data unit with respect to at least a transmission priority, the WTRU may modulate the first media data unit using the first set of modulation parameters, modulate the second media data unit using the second set of modulation parameters, and transmit the first modulated media data unit and the second modulated media data unit to the network device using respective subsets of the uplink grant.

A turbo encoder intended for use in earth stations communicating through data networks where Successive Interference Cancellation ( S IC ) multiple access to Low Earth Orbit ( LEO ) satellites is employed. The disclosed turbo encoder constitutes an enhancement to code rate 1 / 8 of a known in the art code rate 1 / 6 turbo encoder that comprises two recursive convolutional encoders, an encoder a and an encoder b. The enhancement is achieved by adding two recursive convolutional encoder forward connection vectors to the code rate 1 / 6 turbo encoder as follows : adding forward connection vector G4 10111 to either encoder a or encoder b; and adding forward connection vector G2 10101 to encoder b.

Systems, methods, apparatuses, and computer program products for link adaptation and / or obtaining channel state information (CSI) are provided. One method may include receiving, from at least one user equipment, at least one error probability for at least one successfully received transmission. The method may also include adjusting, based on the received error probability, modulation and coding scheme selection.

A method for automatic management of a wireless access point includes (a) changing a minimum modulation coding scheme of the wireless access point from a first minimum modulation coding scheme to a second minimum modulation coding scheme; (b) determining a first change in performance of the wireless access point in response to changing the minimum modulation coding scheme; and (c) in response to the first change in performance of the wireless access point meeting a first threshold condition, continuing to operate the wireless access point in the second minimum modulation coding scheme.

This document generally relates to wireless communication that includes a network device that transmits, and a user device that receives, a plurality of configurations. Each configuration includes at least one of: a maximum number of layers, a maximum rank, a modulation and coding scheme (MCS) table configuration, a frequency resource size, a maximum modulation order, a maximum code rate, a number of slots for transport block over multiple slots (TBoMS) transmission, or a number of repetitions. The user device determines a transport block size (TBS) based on at least one of the plurality of configurations, and the user device and the network device communicate a transport block with the TBS.

Systems, methods, apparatuses, and computer program products for signaling for communicating with learned constellations and reduced pilots. A method can include receiving, from a network element, information identifying a plurality of constellations and a demodulation reference signal or a demodulation reference signal pattern. The method can also include determining a constellation based on the received plurality of constellations. The method can also include transmitting, to the network element, data based on the determined constellation and the demodulation reference signal.

Methods, systems, and devices for wireless communications are described. Techniques described herein support encoding and transmitting of data carrying reference signals (DCRSs according to a lower modulation order and data according to a higher modulation order. A transmitting device may write data bits and DCRS bits into a bitstream according to an interleaving table (e.g., a systematic bit priority mapping (SBPM) interleaver or table). In some examples, the transmitting device may utilize a sub-constellation of the higher modulation order constellation for transmitting the DCRS bits via DCRS REs. In some examples, the transmitting device may skip (e.g., leave unoccupied) entries in the interleaving table corresponding to the LSBs of a DCRS column. In some examples, the transmitting device may write DCRS bits into the bitstream according to a first interleaving table, and may write data bits into the bitstream according to a second interleaving table.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may determining a physical uplink control channel (PUCCH) transmission characteristic, wherein the PUCCH transmission characteristic is a quantity of PUCCH transmissions in a sub-slot or a format of a set of PUCCH transmissions in the sub-slot, and wherein the wireless communication device supports at least one sub-slot hybrid automatic repeat request (HARQ) acknowledgement (ACK) codebook; and reporting information identifying the PUCCH characteristic for a plurality of types of symbol codebooks. Numerous other aspects are provided.

The present disclosure relates generally to coding modulation techniques for use in digital communication systems such as Orthogonal Frequency Division Multiple Access (OFDMA) systems. More particularly, the present disclosure relates to methods and apparatus for multi-level encoding and decoding. Different receivers coupled to different parallel downlink channels having different channel qualities decode different received signal constellations at different levels of resolution. This allows the overall OFDMA downlink to operate at significantly higher data rates, thereby significantly improving system-level bandwidth efficiency.

A signal transmission method and apparatus, a device, and a system are provided. The signal transmission method includes: sending first signaling to a receive end device, where the first signaling is used to indicate configuration information of a first signal; and the configuration information includes at least one of the following: first information, a signal waveform, a target measurement quantity, or signal sequence information, where the first information is used to indicate a signal type of the first signal, or indicate whether the receive end device detects communication information of the first signal; and the target measurement quantity includes a measurement quantity to be measured or fed back by the receive end device.

A communication system includes a traveling cart 1, a wireless base station 2, and a communication management unit 3. A cart control unit included by the traveling cart 1 transmits traveling position information indicating the traveling position of the traveling cart itself to the wireless base station 2 via a cart wireless communication unit. A CTRL control unit included by the communication management unit 3 acquires at least one recommended transmission rate from a transmission rate table stored in a CTRL storage unit based on the traveling position information of the traveling cart 1 received by wired communication with the wireless base station 2, and generates transmission rate information. The CTRL control unit transmits the transmission rate information and management side transmission information for transmitting to the traveling cart 1 to the wireless base station 2 via a CTRL communication unit. The wireless base station 2 transmits the management side transmission information which is received, to the traveling cart 1 at the transmission rate acquired from the transmission rate information.

The present disclosure provides techniques for rate adaptation under congestion and latency constraints. The approaches described herein focus on aspects of latency, reliability, and power consumption instead of the traditional aspect of throughput. In an example, a method for rate adaptation is disclosed. The method may include determining whether to transmit a new packet or a retry packet. The method may also include reducing a maximum rate for a rate search in response to determining to transmit the retry packet. The method may further include transmitting the retry packet based on the reduced maximum rate.

A method of decoding a received communication signal is provided. The method may comprising converting the received communication signal to the frequency domain to provide frequency domain data. The method may further comprise combining amplitudes of one or more selected frequency components of the frequency domain data, the one or more frequency components being selected according to a predefined communication symbol comprising one or more selected frequency tones corresponding to the one or more selected frequency components. The method may further comprise detecting the predefined communication symbol in the received communication signal depending on the combined amplitudes of the one or more selected frequency components of the frequency domain data.