51 results about "Puncturing" patented technology

Systems and methods are disclosed that are related to puncturing of Control Resource Set (CORESET) #0, e.g., for operation in a narrow channel bandwidth. In one embodiment, a method performed by a User Equipment (UE) comprises operating in a wireless spectrum allocation that is smaller than an amount of frequency domain resources needed for receiving a Synchronization Signal (SS) / Physical Broadcast Channel (PBCH) block (SSB) and CORESET #0. The method further comprises receiving, from a network node, an SSB and CORESET #0 after puncturing, wherein puncturing of the SSB is determined by a number of resource blocks (RBs) comprised in the wireless spectrum allocation within a respective frequency band and puncturing of a Physical Downlink Control Channel (PDCCH) mapped to the CORESET #0 is determined by the puncturing of the SSB and one or more offset parameters. The method further comprises decoding a message based on the PBCH / PDCCH.

Systems and techniques are provided for wireless communications. For example, a process can include, obtaining a message for transmission to a receiving device, determining a plurality of beamforming weights for transmitting a portion of the message toward a direction of the receiving device. A number of beamforming weights is equal to a number of transmit array elements. Each beamforming weight corresponds to a respective transmit array element. A beamforming weight is configured to turn off a transmit array element during transmission of the portion of the message. The process can include outputting an array puncturing notification indicative of transmission of the portion of the message by the plurality of transmit array elements with the transmit array element corresponding to the beamforming weight turned off and transmitting the portion of the message by the plurality of transmit array elements with the transmit array element corresponding to the beamforming weight turned off.

Embodiments of the present disclosure relate to controlling a control resource set (CORESET) #0 puncturing. Some embodiments comprise determining, at a first apparatus, based at least on detection of a synchronization signal block, received from a second apparatus, on a specific frequency location, whether a CORESET of a specific type is punctured, wherein a portion of resources punctured in the CORESET of the specific type are incapable of carrying downlink control information; in accordance with a determination that the CORESET of the specific type is punctured, obtaining a CORESET puncturing pattern; and determining the portion of resources punctured in the CORESET at least based on the CORESET puncturing pattern. Furthermore, the method comprises indicating, from a second apparatus to a first apparatus, that a CORESET of a specific type is punctured by transmitting a synchronization signal block on a specific frequency location.

Proposed are a method and device for receiving an A-PPDU in a wireless LAN system. Specifically, a reception STA receives an A-PPDU from a transmission STA and decodes the A-PPDU. The A-PPDU includes a first PPDU for a primary 160 MHz channel and a second PPDU for a secondary 160 MHz channel. A first signal field includes information about a bandwidth in which the first PPDU is transmitted. The information about the bandwidth in which the first PPDU is transmitted includes information about a first preamble puncturing pattern punctured in a unit of a 20 MHz channel in the primary 160 MHz channel. A second signal field includes information about a second preamble puncturing pattern.

Certain aspects of this disclosure generally relate to techniques for enhanced puncturing and low-density parity-check (LDPC) code structures. A method for wireless communication by a transmitting device is provided. This method generally includes: encoding a set of information bits based on an LDPC code to generate a codeword, the LDPC code being defined by a basic matrix having a first number of variable nodes and a second number of parity nodes; puncturing the codeword according to a puncturing pattern designed to puncture bits corresponding to at least two of the variable nodes to generate a punctured codeword; adding at least one additional parity bit to the punctured at least two variable nodes; and transmitting the punctured codeword.

Methods, systems, and devices for wireless communications are described. Techniques described herein provide sensing reference signal pattern configuration and puncturing. In some examples, a user equipment (UE) may receive control signaling indicating a sensing reference signal pattern comprising a plurality of symbols for transmission of the sensing reference signaling. To avoid collisions between the transmission of the sensing reference signaling and a communication transmission, one or more symbols of the sensing reference signal pattern may be punctured for communication of non-sensing reference signaling on the one or more symbols. The UE may transmit a sensing reference signal on a set of non-punctured symbols of the plurality of symbols of the sensing reference signal pattern.

An electronic apparatus includes a processor configured to construct a set of equivalent puncturing pattern (EPP) sequences for polar-coded HARQ transmissions. The set of EPP sequences include an initial sequence and a set of permuted sequences. Each sequence includes elements representing a sub-block puncturing pattern. The processor is also configured to select an EPP sequence from the set of EPP sequences. The electronic apparatus also includes a transceiver operatively coupled to the processor. The transceiver is configured to transmit a polar-coded HARQ transmission. The polar-coded HARQ transmission is punctured according to the selected EPP sequence.

A method and an apparatus for transmitting an EHT PPDU to a WLAN system are proposed. Specifically, a transmitter generates and transmits an EHT PPDU to a receiver through a 320 MHz band from which an 80 MHz band is punctured. The EHT PPDU includes a legacy preamble and an EHT field. The legacy preamble includes an L-STF and an L-LTF. The legacy preamble is generated by applying a first phase rotation value. The first phase rotation value is obtained on the basis of a second phase rotation value and a third phase rotation value. The second phase rotation value is a phase rotation value that repeats a phase rotation value defined for the 80 MHz band in an 802.11ax system. The third phase rotation value is a phase rotation value defined in unit of the 80 MHz band in the 320 MHz band on the basis of an optimal PAPR of the L-STF and L-LTF. The first phase rotation value is [1 1 −1 −1 −j −j j j 1 1 −1 −1 −j −j j j].

Embodiments of the present application provide a reference signal transmission method and a related device, the method comprising: transmitting a phase tracking reference signal (PTRS) according to first information, the first information comprising at least one of the following items: the number of PTRS resource units (REs), the number of non-zero power (NZP) PTRS REs, the number of zero power ZP PTRS REs, or the number of puncturing REs, the number of the puncturing REs being at least one of the number of the PTRS REs, the number of the NZP PTRS REs, the number of the puncturing REs being at least one of the number of the puncturing REs, and the number of the puncturing REs being at least one of the number of the NZP PTRS REs. Wherein the PTRS RE is used for bearing the PTRS, the NZP PTRS RS is used for bearing the NZP PTRS, the ZP PTRS RS is used for bearing the ZP PTRS, and the puncturing RE is used for not transmitting data or transmitting zero-power signals. In a process in which the communication device transmits the PTRS according to the first information, in addition to a PTRS RE or an NZP PTRS RE, a ZP PTRS RE or a puncturing RE is also considered. Therefore, the PTRS RE or the NZP PTRS RE can obtain the extra power from the ZP PTRS RE or the punching RE, and the phase noise estimation precision is ensured.

One coding method of a plurality of coding methods including at least a first coding method and a second coding method is selected, an information sequence is encoded by using the selected coding method, and an encoded sequence obtained by performing predetermined processing on the information sequence is modulated and transmitted. The first coding method is a coding method having a first coding rate, for generating a first encoded sequence by performing puncturing processing on a generated first codeword by using a first parity check matrix. The second coding method is a coding method having a second coding rate, for generating a second encoded sequence by performing puncturing processing on a generated second codeword by using a second parity check matrix that is different from the first parity check matrix, the second coding rate after the puncturing process being different from the first coding rate.

A method for transmitting a discrete fourier transform (DFT) DFT-S-OFDM signal including frequency domain reference symbols is disclosed. The method comprises: determining to null a plurality of data symbols prior to DFT-spreading; performing DFT-spreading including the determined null data symbols; puncturing an interleaved output of the DFT-spreading; inserting reference symbols in a frequency domain of the punctured and interleaved DFT-S-OFDM signal; and transmitting the DFT-S-OFDM signal with inserted reference symbols to a receiver. The transmitted DFT-S-OFDM signal enables the receiver to apply zeros corresponding to the reference symbols to an interleaved input of DFT-despreading, and cancel interference due to the puncturing by using all outputs of the DFT-despreading.

The present invention discloses a puncturing method and system based on recursive list decoding of RM codes. The method includes the following steps: S1. Determine a puncturing order set based on the column weights of RM codes; S2. Select a puncturing index from the puncturing order set to obtain a puncturing set F, puncture the bit positions of the puncturing indexes in the puncturing set F, and set the log-likelihood ratio at the puncturing positions to zero; S3. Input the punctured information bits and the unpunctured information bits into the decoder in the original order; S4. Decode the RM code through the decoder using a recursive structure, and select the one with the minimum path metric value from the decoding paths as the output result. The present invention selects the puncturing order according to the column weights of the generating matrix G of RM codes, and has better error performance, higher information transmission capacity, and higher information transmission efficiency in the case of a large number of puncturing.

Embodiments of the present disclosure relate to an apparatus, a method, and a computer readable storage medium for controlling a control resource set (CORESET) # 0 puncturing. The method includes determining, at a first device, whether a particular type of CORESET is punctured based on detecting a synchronization signal block received from a second device at least on a particular frequency location, where a punctured resource portion in the particular type of CORESET cannot carry downlink control information; according to the fact that the CORESET of the specific type is punched, a CORESET punching pattern is obtained; and determining a punctured resource portion in the CORESET based at least on the CORESET puncturing pattern. Further, the method includes indicating from the second device to the first device that the particular type of CORESET is punctured by transmitting a synchronization signal block on the particular frequency location.

The present invention discloses an intelligent resource allocation method, device, terminal and storage medium for the eMBB / URLLC coexistence scenario in the field of wireless communication technology, aiming to solve the problem that it is difficult to control the throughput and service satisfaction of eMBB to be maximized under the premise of meeting the reliability of URLLC in the prior art. The method includes realizing the collaborative training of the eMBB agent and the URLLC agent based on the PF-TSIPRA algorithm according to the Markov process of the eMBB resource allocation model at the time slot scale and the Markov process of the URLLC puncturing model at the mini time slot scale; the present invention constructs the puncturing preference by using the proportional fairness method to maintain the fairness of eMBB users; by continuously interacting with the environment to cope with the random and occasional characteristics of URLLC services, while meeting the QoS requirements of URLLC users, maximizing the service satisfaction of eMBB services, and solving the optimal resource allocation strategy.

The application claims a reliability parameter assisted low complexity polar code rate matching method, belonging to the technical field of wireless communication. In view of the problem that the recursive structure of polar code makes it difficult to select suitable puncturing bits during rate matching, a polar code puncturing bit selection algorithm based on reliability parameters is proposed. Based on the analysis of the decoding process of polar code and the influence of the box operation on the selected puncturing bits, a kind of information bit reliability parameter is defined to calculate the reliability of the candidate puncturing bits. The optimal puncturing bits are selected by solving the maximum reliability parameter minimum value through iteration. In view of the problem that the existing polar code rate matching method has high complexity, an interleaving algorithm based on rate matching parameter mapping and a pruning serial cancellation list decoding algorithm are proposed, which avoids the secondary sorting calculation of the interleaver and simplifies the updating strategy of the calculation unit of the decoder. The proposed polar code rate matching method can not only improve the rate matching coding gain, but also effectively reduce the calculation complexity.

Provided in the embodiments of the present application are a communication method and communication apparatus based on a low-density parity check code. The joint screening of the number of information columns and the number of punctures is performed on the basis of a target code rate, wherein the number of information columns is used for determining a coding base matrix, and the number of punctures is used for determining a puncturing sequence; the coding base matrix is used to perform coding on an information bit sequence, so as to obtain a codeword sequence; and puncturing is performed on the codeword sequence on the basis of the puncturing sequence. In this way, the puncturing proportion matches the target code rate, and the puncturing proportion is always controlled within an appropriate range, so as to achieve the advantages of a high convergence speed and a good decoding threshold, thereby improving a rate matching manner.

A communication apparatus for encoding an information block for transmission is provided. The communication device: encodes an information block having a size of K based on a polar code having a size of N to determine a bit sequence having a size of N; selecting k bit positions among the N bit positions of the bit sequence based on a predetermined puncturing pattern; selecting k intermediate bit values from among intermediate bit values generated while encoding the information block on the basis of a polar code having a size of N, on the basis of a predetermined expansion pattern; and replacing the bit values of the k bit positions in the bit sequence with the k intermediate bit values to generate a codeword having a size N.

Embodiments of the present invention are drawn to systems, apparatus and methods that perform wireless ranging procedures using EHT frames supporting large bandwidth transmission. Moreover, ranging specifications are expanded for the EHT frame format in order to support BW320 ranging with improved performance and accuracy. Embodiments of the present invention support high-bandwidth BW320 and BW240 wireless ranging using a EHT frame format and support 802.11az ranging using a high efficiency (HE) for 802.11be devices. Long training field (LTF) repetition features and security features are also described for EHT-LTFs, and signaling of preamble puncturing patterns are defined for 320 MHz physical layer protocol data units (PPDUs) carried in the U-SIG field and in Trigger Frames to improve spectrum efficiency and reduce interference, according to embodiments.

Provided in the present application are a data transmission method and apparatus. The method comprises: performing outer code coding on one or more coding units, so as to obtain first redundant data; and sending the first redundant data on a first resource, wherein the first resource is predefined, or, the first resource is configured by an access network device. A resource used for carrying redundant data obtained by means of outer code coding is predefined, or, an access network device separately configures the resource for the redundant data, and in this way, a first communication apparatus can map the redundant data to the given resource for transmission, such that the redundant data has a clear resource boundary, thereby reducing the influence on original information in some scenarios. In addition, the redundant data is mapped to the given resource for transmission, thereby facilitating the use of the redundant characteristics of the redundant data to perform multiplexing, puncturing, interference resistance, etc. on the resource occupied by the redundant data, thus improving the spectrum utilization rate.

The present disclosure relates to a technology for solving a problem in which signal transmission / reception performance of a WLAN system is degraded due to interference occurring in an OBSS and AP dense environment. In the conventional pilot structure, it is difficult to sufficiently measure various interference effects, resulting in performance degradation. One embodiment of the present disclosure proposes a method for defining an interference measurement (IM) pilot for precisely identifying interference characteristics, and transmitting same by including same in a PPDU together with data. The PPDU may have a bandwidth of 80 MHz, 160 MHz, 320 MHz, or the like, and a structure to which preamble puncturing is applied may be included as necessary. In addition, interference measurement accuracy is improved by configuring an IM pilot tone plan for each bandwidth and arranging an IM pilot at a position that does not overlap a conventional CFO pilot. According to the technology of the present disclosure, a receiving end can improve transmission reliability and throughput by improving channel estimation and interference cancellation performance using IM pilot-based interference information.

A decoding method of a decoder circuit includes: using a memory circuit to receive input data; using the input data to generate or update a variable-to-check message and a log-likely ratio; converting the variable-to-check message from variable node domain into check node domain to generate a converted variable-to-check message; generating a check-to-variable message according to the converted variable-to-check message; converting the check-to-variable message from check node domain into variable node domain to generate a converted check-to-variable message, so as to calculate and update the variable-to-check message and the log-likely ratio; performing a hard decision according to the log-likely ratio; storing multiple data portions of the input data into multiple storage positions of the memory circuit in response to a decoding calculation schedule; and controlling storage position(s) of the memory circuit to be empty for the shortening setting or puncturing setting.

The application relates to the technical field of communication, and discloses an information transmission method and device based on unequal diversity degrees and a storage medium. In the application, puncturing operation is performed on to-be-punctured data to obtain target data; the puncturing operation is used to make the puncturing positions and / or puncturing quantities of data of a plurality of terminal devices sharing the same transmission resource different; and the target data is transmitted. In this way, unequal diversity degrees are realized based on different puncturing quantities and / or different puncturing positions. In addition, the data granularity of the puncturing operation can be data blocks, bits or symbols, and the data granularity can be flexibly used; the smaller the granularity is, the better the performance of the unequal diversity degrees is.

A method has the step of: transmitting or receiving a signal using a first resource unit (RU) in an orthogonal frequency-division multiple access (OFDMA) physical layer protocol data unit (PPDU). The first RU is selected from multiple first RUs of a first tone plan for the PPDU, which are same as second RUs of a second tone plan obtained by a tone-distribution method have the steps of: partitioning the PPDU into multiple subchannels, determining a third tone plan having third RUs, the tone indices of the third tone plan being greater than or equal to zero, and modifying tone indices of the third tone plan such that the modified tone indices thereof have negative and positive indices excluding a plurality of direct current (DC) tones at and around index zero, to obtain multiple modified third RUs as part of the second RUs for at least a first subchannel.

One coding scheme is selected from a plurality of coding schemes, an information sequence is encoded by using the selected coding scheme, and an obtained encoded sequence is modulated to obtain a modulated signal. The obtained modulated signal is subjected to a phase change and is transmitted. The plurality of coding schemes include at least a first coding scheme and a second coding scheme. The first coding scheme is a coding scheme with a first coding rate for forming a generated first codeword as a first encoded sequence by using a first parity check matrix. The second coding scheme is a coding scheme with a second coding rate obtained after puncturing processing, for generating a second encoded sequence by performing the puncturing processing on a generated second codeword by using a second parity check matrix different from the first parity check matrix. The number of bits of the first encoded sequence is equal to the number of bits of the second encoded sequence.

Various aspects of the present disclosure generally relate to wireless communication. For example, when an output from a systematic polar encoder has a coded bit length N that differs from a target code length E, locations for bit freezing may be selected such that a resulting set of information bit locations (including cyclic redundancy code (CRC) bit locations) satisfy a systematic encoding condition. Furthermore, when the coded bit length N exceeds the target code length E, such that shortening or puncturing is performed to achieve the target code length, locations for shortening or puncturing may be selected to ensure that the set of information bit locations satisfy the systematic encoding condition. In this way, the systematic polar code may include a set of systematic bits at the same locations as the information bits, and the systematic bits do not appear in any untransmitted (for example, punctured or shortened) locations.

Methods, systems, and devices for wireless communication are described. Some energy harvesting (EH)-capable devices may implement channel coding for backscatter-based communications (e.g., backscatter communications may be encoded using error correction codes). The same mother code may be used with different coding rates, for example based on puncturing or shortening applications. The EH-capable device may use the same mother code and different coding rates for backscatter-based communications based on operating conditions at the EH-capable device. For example, the mother code may be an (N, K) block code, and the EH-capable device may adjust the coding rate by applying S-bit shortening. As another example, the mother code may be a convolutional code using a defined number K of input information bits and a defined number N of encoded output bits, and the EH-capable device may adjust the coding rate by applying P-bit puncturing.

An apparatus comprising circuitry configured to perform a transport channel processing chain, the transport channel processing chain comprising a sub-carrier puncturing function, the sub-carrier puncturing function comprising puncturing, in each subframe of a composite transmission time interval, a set of subcarriers from at least one mapped physical resource block.

Systems and techniques are provided for wireless communications. For example, a process can include, obtaining a message for transmission to a receiving device, determining a plurality of beamforming weights for transmitting a portion of the message toward a direction of the receiving device. A number of beamforming weights is equal to a number of transmit array elements. Each beamforming weight corresponds to a respective transmit array element. A beamforming weight is configured to turn off a transmit array element during transmission of the portion of the message. The process can include outputting an array puncturing notification indicative of transmission of the portion of the message by the plurality of transmit array elements with the transmit array element corresponding to the beamforming weight turned off and transmitting the portion of the message by the plurality of transmit array elements with the transmit array element corresponding to the beamforming weight turned off.

Techniques to detect when received energy in a portion of a radio frequency band is an aliased image of a source device (e.g., a non-WLAN interferer) and not an actual emission / transmission from a device. The aliased image may be caused by artifacts associated with the radio frequency downconverting and digital signal processing / sampling of a downconverted received signal. A determination is then made whether preamble puncturing should be used in a channel that is impacted by the aliased image to avoid that portion depending on whether the transmitting / receiving radio that sends / receives traffic would also be impacted by that aliased image.

A data transmission method implemented by a first item of telecommunication equipment transmitting to a second item of telecommunication equipment. The method includes: encoding input data by using an encoder; puncturing data after encoding; modulating with mapping of the data, after puncturing, on one symbol among M symbols of a constellation having order M, where M=2q,≥2, each symbol of the constellation comprising at least two bits having different weights; and transmitting the data, after mapping, to the second item of equipment. The method is such that, for at least one of the M symbols, the puncturing of the data differs according to the weight of the bits in the symbol on which these data are mapped.