60 results about "Block Error Rate" patented technology

This application relates to wireless communications, including methods and apparatus to monitor radio link conditions of a cellular wireless network adaptively using a low-power wake-up signal (LP-WUS) burst received by a low-power wake-up radio (LP-WUR) of a wireless device when possible and switching to using legacy reference signals received by a main radio only when required. The LP-WUS burst is processed by the LP-WUR to determine a block error rate (BLER) value and / or a signal-to-noise-plus-interference ratio (SINR) value to determine whether the wireless device is in an out-of-sync (OOS) condition. The main radio can be awakened, including when directed to sleep by the cellular wireless network, to perform radio link monitoring when the OOS condition is determined.

Aspects of the present application provide methods and devices for a phase tracking reference (PT-RS) scheme for use by a single carrier Offset QAM (SC-OQAM) transmitter and receiver to estimate, and correct, phase errors that occur over the communication link between the SC-OQAM transmitter and receiver. A transmitter may set the sign (positive or negative) of PT-RS symbols dynamically allowing the transmitter to better utilize IQ interference caused by data symbols and other PT-RS symbols. Another aspect of the present disclosure provides a receiver that can estimate phase error due to phase noise without knowing the sign of PT-RS symbol or the sign of IQ interference. This type of phase error estimation improves the phase noise estimation performance, and thus may improve the overall block error rate (BLER) performance at the receiver.

The invention discloses a block error rate target value adjusting method and system, a base station, a medium and a product, and relates to the technical field of communication, and the method comprises the steps: obtaining a current first data transmission performance index value and a first signal quality index value of a terminal; determining a current first service type of the terminal according to the first data transmission performance index value, and obtaining a first quality degradation threshold range corresponding to the first service type; and if the first signal quality index value belongs to the first quality degradation threshold range, adjusting a preset default block error rate target value. The technical problems that a traditional BLER target value adjustment scheme is poor in service adaptability and cannot respond to network dynamic changes in real time are solved, and the effects that BLER target value adjustment adapts to service requirements and can respond to the network dynamic changes in real time are achieved.

A first wireless device may receive from a second wireless device, one or more configuration messages indicating: a radio link monitoring window of a sidelink between the first wireless device and the second wireless device; and a radio link monitoring reference signal configuration of the sidelink. Based on the radio link monitoring reference signal configuration, a determination of a physical sidelink control channel block error rate (BLER) over the radio link monitoring window may be made. A determination may be made that a radio link failure based on the BLER exceeds a threshold value. An indication of the radio link failure of the sidelink may be transmitted.

The application relates to a data retransmission method and device, computer equipment and a storage medium. The method comprises the following steps: in the case of initial transmission redundancy version decoding failure, determining a problem scenario according to a measurement quantity of an uplink physical shared channel, and / or determining the problem scenario according to a channel quality indicator and uplink control information; determining a retransmission redundancy version and a retransmission decoding mode according to the problem scenario, wherein the retransmission redundancy version represents a redundancy version used in retransmission, and the retransmission decoding mode is used to indicate a decoding mode used in the case of receiving the retransmission redundancy version. The method can reduce residual block error rate.

The application relates to the field of digital communication and digital storage, and particularly relates to a rate-compatible tail-biting convolutional code encoding method and device based on selective multiplicative repetition. The method comprises the following steps: obtaining an information sequence to be encoded; performing CRC encoding on the information sequence by using a cyclic redundancy polynomial to obtain a redundancy sequence, wherein the redundancy sequence comprises the information sequence and a CRC redundancy information sequence; periodically inserting the CRC redundancy information sequence into the information sequence in a symbol unit formed by a preset number of bits to obtain a new redundancy sequence; performing tail-biting convolutional encoding according to the new redundancy sequence to obtain an encoded sequence; and performing selective multiplicative repetition encoding according to a preset target code rate, the encoded sequence and a randomly determined multiplicative coefficient to obtain a selective repetition encoded sequence. The encoding method provided by the application has a lower block error rate under various code rates.

This disclosure describes techniques that can be used for dynamic link adaptation in wireless telecommunications networks. Some implementations relate to determine signal to interference and noise (SINR) back off values, which can be used to determine adjustments to transmission characteristics such as transmission power for improving throughout. In some implementations, block error rates are used to determine adjustments to transmission power. In some implementations, slot-specific adjustments are determined. Reinforcement learning can be used to determine adjustments in real time or nearly real time.

The invention particularly relates to a parameter adaptive hybrid disturbance serial cancellation (SC) decoding method for polarization codes. Aiming at the problems of disturbance parameter fixation and rigidity, lack of channel adaptability and dependence on off-line parameter search in the existing hybrid disturbance serial cancellation (HPSC) decoding method, the method comprises the following steps: firstly, establishing a linear mapping relation between disturbance noise power and channel noise power to realize automatic adaptation of a channel environment; then, the check characteristic of a cyclic redundancy check code is used as a detection indicator of a local optimal trap, intelligent switching is carried out between adaptive random disturbance and adaptive biased disturbance, and a bias adjustment strategy dynamically changing along with the number of iterations and the reliability of a received symbol is introduced in the biased disturbance stage; therefore, parameter-adjustment-free high-performance decoding is realized on the premise of keeping low complexity of SC. Simulation results show that compared with a traditional HPSC decoding method with fixed parameters, the method provided by the invention has better block error rate performance, and has lower average decoding iterations in a high signal-to-noise ratio region.

Systems and methods for reducing collisions of transmission data for a first subscriber (e.g., a voice subscriber) with transmission data for a second subscriber (e.g., a data subscriber) at a dual sim dual active (DSDA) user equipment (UE) are described herein. A DSDA UE may be configured to implement a modified skipUplinkTxDynamic feature that avoids collisions by buffering transmission data of the data subscriber and sending a (later) scheduling request (SR) for a grant for that data. A DSDA UE may regulate data subscriber transmissions to avoid a transmission duration for the voice subscriber. A DSDA UE may reduce certain transmissions for a voice subscriber (subject to a block error rate (BLER) threshold for the voice subscriber) to lower the probability of collision. A DSDA UE may operate a data subscriber and a voice subscriber in the same cell to avoid collisions due to RF tuning and / or relative slot overlap.

Provided are a method and an apparatus for adjusting an inner loop value, The method includes: repeatedly executing the following steps, wherein a history inner loop adjustment factor of each time-domain scheduling unit in a radio frame is initialized to be an initial inner loop adjustment factor of each time-domain scheduling unit: determining a block error rate corresponding to each time-domain scheduling unit according to ACK / NACK information corresponding to each time-domain scheduling unit, wherein the radio frame comprises N time-domain scheduling units, N being a positive integer; determining a current inner loop adjustment factor of each time-domain scheduling unit according to the block error rate corresponding to each time-domain scheduling unit and the history inner loop adjustment factor of each time-domain scheduling unit; and adjusting an inner loop value corresponding to each time-domain scheduling unit according to the current inner loop adjustment factor of each time-domain scheduling unit.

The application provides a CRC concatenated Polar code encoding method for key set protection, which comprises the following steps: according to a Polar code Gaussian approximation (GA) construction algorithm, selecting reliable bit channels as information bits and unreliable bit channels as frozen bits; obtaining the information bit most likely to have the first error, i.e. the key set, through a code tree structure or Monte Carlo simulation; selecting a CRC polynomial to pre-encode the key set, and then appending the obtained CRC check vector to the end of the information bit vector; and finally encoding the pre-encoded vector by using a Polar code encoding method. The method has the following advantages: compared with a traditional CRC concatenated Polar code encoding method, the method can use a smaller CRC code length by protecting the key set, and can reduce the block error rate when applied to SC-Flip decoding.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a control signal indicating a scale factor for a channel state information (CSI) parameter. The scale factor may correspond to a CSI reference signal (CSI-RS) measurement and a second measurement. The UE may receive a CSI-RS, and a value of the CSI parameter may be based on the CSI-RS. The UE may transmit a CSI report indicating an adjusted value of the CSI parameter in accordance with the scale factor. In some examples, the scale factor may be associated with a downlink shared channel block error rate, a demodulation reference signal measurement, an uplink sounding reference signal, or any combination thereof.

A method includes: receiving a first reference signal group, and transmitting a first information block. The first information block is generated by measuring the first reference signal group. The first information block includes K channel quality indications corresponding to K first type values, respectively. A first channel quality indication is any channel quality indication in the K channel quality indications. The first channel quality indication indicates that in response to the first reference resource block being occupied by a first bit block and the first condition set being met, the first bit block is received by a first node with a transmission block error rate not exceeding the first threshold. The first condition set includes: a receiving quality indication of the first bit block is a first value, and the first value is the first type value corresponding to the first channel quality indication.

Embodiments of the present application disclose a transmission rank determination method and device, electronic equipment, a storage medium and a program product. The transmission rank determination method comprises: when a communication terminal is in a low-speed state, obtaining an average modulation and coding scheme (MCS) value, an average transmission layer number and a block error rate of the communication terminal within a time window; updating the MCS value of the transmission rank corresponding to the average transmission layer number according to the average MCS value; when the block error rate is in a preset block error rate range, determining a reference transmission rank from the transmission rank according to the average transmission layer number, and determining a target transmission rank of the communication terminal based on a comparison result of the MCS value of the reference transmission rank and a corresponding preset threshold, wherein the reference transmission rank at least includes the transmission rank corresponding to the average transmission layer number. The embodiments of the present application make the determined target transmission rank more matched with the current channel condition, which is beneficial to improving the transmission efficiency.

The application discloses a method and device for reporting transmission mode in a node for wireless communication. A first node measures at least a first RS resource; and transmits at least first control information. The transmission mode indicated by the first control information includes at least a first modulation mode, the transmission mode indicated by the first control information is obtained based on at least the measurement on the at least first RS resource; and the transmission mode indicated by the first control information satisfies: under the condition of using a first encoder, a first bit block using the transmission mode indicated by the first control information is received with a block error rate not exceeding a first threshold, and the first threshold is a positive real number greater than 0 and less than 1.

This invention discloses a parameter measurement method, apparatus, device, and storage medium. The method includes: obtaining a control parameter weight corresponding to a delay-limited parameter; calculating an initial value for the delay-limited parameter based on the control parameter weight; and adjusting the delay-limited parameter based on the initial value to achieve a block error rate of transmitted data blocks reaching a preset target value. The technical solution of this invention can shorten the time required for the delay-limited parameter of a CSI-RS signal to reach its optimal value, reduce resource waste, and improve the efficiency of the entire system.

Embodiments of the present disclosure relate to methods, apparatuses, and computer readable storage media for channel state information (CSI) reporting. According to embodiments of the present disclosure, a first device receives, from a second device, a configuration for CSI reporting. The configuration includes at least a block error rate target and an indication of a number of HARQ transmissions. The first device determines a channel quality indicator (CQI) based on the block error rate target and the number of HARQ transmissions indicated by the configuration, and transmits, to the second device, a CSI report including the CQI. This solution makes CSI feedback suitable for spectrally efficient and reliable delivery of point-to-multipoint services while meeting latency requirements, particularly in the context of NACK-only feedback on common feedback resources.

The invention relates to the technical field of digital information transmission, in particular to a three-dimensional progressive extension construction method and device of a QC-SC-LDPC code, electronic equipment and a medium, and the method comprises the steps: obtaining a macro sub-code edge extension basis matrix family and a nested lifting factor set, initializing a three-dimensional grid structure, numbering all nodes according to a construction sequence, and constructing a macro sub-code edge extension basis matrix; numbering each edge of the macro sub-code edge expansion basis matrix according to the code rate and the smoothing parameter; constructing an original offset address group candidate set, and storing the original offset address group candidate set in a first node; qC-SC-LDPC codes of various code rates, code lengths and smoothing parameters are constructed progressively through growth of a three-dimensional grid structure, pruning and updating are carried out based on application of a ring distribution cost criterion, a diversity criterion and a block error rate performance criterion, and if conditions are met, a macro-subcode lifting matrix family is obtained. Therefore, the problems that the mode of constructing the QC-SC-LDPC code is difficult to give consideration to multiple code lengths and multiple code rates and is easily limited by multi-dimensional progressive extension, so that the performance compromise effect among the modes is poor and the like in the related technology are solved.

Apparatus and methodology are disclosed for Kolmogorov-Arnold network (KAN)-based autoencoders (AEs) with symbolic regression (SR) for orthogonal frequency-division multiplexing (OFDM) to achieve energy-efficient channel coding. A KAN-based AE can provide comparable performance to a multi-layer perceptron (MLP)-based AE in terms of block-error rate (BLER) while providing superior energy efficiency along with SR. SR is used to convert KANs into symbolic expressions. A non-linearity score is used in the SR process to obtain equations leading to low-complexity implementation and improved energy efficiency at the radios. To assess energy efficiencies of the MLP and KAN models, we compute the presently disclosed non-linearity score for both models, which is determined to be 6.84648×105 and 1.2366×106 for the KAN-based AE and the MLP-based AE, respectively. KANs are a viable alternative to MLPs for machine-learning based channel coding because the MLP-based model consumes 1.38 times more energy than the SR model.

This invention provides an adaptive variable rate method and apparatus based on signal-to-noise ratio (SNR) prediction, applicable to scattering communication. It addresses the adaptive variable rate requirement in scattering channels with fast fading characteristics, solving the problems of inaccurate SNR information and mapping relationships in determining the transmission symbol rate and coding / modulation scheme. The method includes: calculating an initial predicted SNR value and an SNR prediction error value based on an estimated SNR value, thereby obtaining an accurate predicted SNR value after error compensation; updating a dynamic threshold using the demodulation block error rate; obtaining an equivalent SNR using the predicted SNR value and the dynamic threshold; and determining the symbol rate and coding / modulation scheme by looking up a rate threshold table and a coding / modulation scheme threshold table using the equivalent SNR. This invention guides the transmission symbol rate and coding / modulation scheme with accurate SNR information and mapping relationships, effectively improving the average throughput of scattering communication systems and ensuring communication reliability.

A method for wireless communication at a user equipment (UE) and related apparatus are provided. In the method, the UE obtains a block error rate (BLER) identification periodicity. The BLER identification periodicity includes a shortest time interval between any two occasions in which the UE is to identify a measured measurement or a predicted measurement. The UE further performs, based on the measured measurement or the predicted measurement, one or more of a radio link monitoring (RLM) or a beam failure detection (BFD). The evaluation period or the indication periodicity for the RLM or the BFD is based on the BLER identification periodicity.

The embodiment of the present application relates to the technical field of wireless network, and discloses a scheduling method and device for bandwidth part based on uplink quality, which comprises the following steps: obtaining an uplink state, and judging whether the resource of an uplink bandwidth part needs to be scheduled according to the uplink state, wherein the uplink state at least comprises a block error rate and a quality of service; when the resource of the uplink bandwidth part needs to be scheduled, continuously scheduling the uplink bandwidth part according to the current uplink bandwidth part, a signal-to-noise ratio and the quality of service; and if the block error rate detected after adjustment is equal to a target block error rate, stopping scheduling the uplink bandwidth part. Through the above method, the embodiment of the present application can adjust the BWP bandwidth of the uplink, and select the uplink service, so that the QoS service with higher priority can be reliably transmitted in the limited network environment, and the user perception is improved.

A method comprising, by a transmitting entity: performing a first transmission over a communication channel, receiving, from a receiving entity, an indication of a channel quality for the communication channel, determining, based on the indication of the channel quality, a block error rate (BLER) floor for the communication channel, determining, based on the BLER floor, a number of bits for one or more hybrid automatic repeat request (HARQ) retransmissions associated with the first transmission, and performing, based on the determined number of bits for the one or more HARQ retransmissions, the HARQ retransmissions to the receiving entity.

The application relates to the technical field of satellite communication, and discloses a multi-type terminal adaptive coding method, device, equipment, storage medium and product, which comprises the following steps: acquiring terminal information reported by a terminal device; determining terminal classification information of the terminal device according to the terminal information; determining a smoothing coefficient based on the terminal classification information, and performing smoothing processing on a signal-to-noise ratio of a current channel according to the smoothing coefficient to obtain a target signal-to-noise ratio value; and determining a modulation and coding scheme corresponding to the terminal device according to the target signal-to-noise ratio value and a block error rate of the terminal device. The application classifies the types of terminal devices by using the information reported by the terminal devices, sets different smoothing coefficients for each type of terminal according to the channel characteristics of different types of terminals, and determines the corresponding modulation and coding scheme, so that users with stable channels have higher spectral utilization, users with relatively severe channel changes have better stability, and the overall spectral efficiency and transmission reliability are synergistically improved.

Methods, systems, and devices are described for transmitting and receiving channel quality indication (CQI) information over a physical channel to facilitate, e.g., meet block error rate requirements in emerging systems. An example method includes transmitting an index associated with a quality of a physical channel, wherein the index corresponds to an entry in a set of parameter tables. Another example method includes receiving an index associated with a quality of a downlink physical channel, and transmitting a plurality of data blocks wherein content of the plurality of data blocks is encoded and modulated using a code rate and a modulation scheme, respectively, selected from entries in a parameter table corresponding to the index. In both exemplary methods, one or more parameter tables include at least three entries including a code rate of less than or equal to 120 / 1024.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a control signal indicating a scale factor for a channel state information (CSI) parameter. The scale factor may correspond to a CSI reference signal (CSI-RS) measurement and a second measurement. The UE may receive a CSI-RS, and a value of the CSI parameter may be based on the CSI-RS. The UE may transmit a CSI report indicating an adjusted value of the CSI parameter in accordance with the scale factor. In some examples, the scale factor may be associated with a downlink shared channel block error rate, a demodulation reference signal measurement, an uplink sounding reference signal, or any combination thereof.

The invention provides an encoding method, a decoding method, a communication device, a storage medium and a program product. In the coding method, a first sequence used for coding K bits to be coded is determined, the first sequence comprises N bit indexes, and the N bit indexes are arranged according to the reliability of the N bit indexes; placing K bits to be coded according to K bit indexes in the first sequence to obtain a second sequence; and performing polarization code coding on the second sequence to obtain a third sequence. Therefore, the invention provides a polar code coding mechanism which can be suitable for a PLC (Programmable Logic Controller) system. As the polar code coding is proved to reach the Shannon limit, the coding method can reduce the block error rate of coding, thereby improving the coding performance.

The invention relates to a modulation and coding scheme scheduling method and device, a base station, a medium and a program product. The method is applied to a base station, and comprises the following steps: determining a corrected MCS and an attempted MCS at a current statistical moment according to a historical average block error rate of a plurality of MCSs; determining a current uplink signal transmission state based on the channel quality evaluation parameter of the uplink channel; and determining a scheduling MCS to be used currently based on the uplink signal transmission state, the corrected MCS and the attempted MCS. Wherein the historical average block error rate of the corrected MCS is smaller than the target block error rate, and the historical average block error rate of the attempted MCS is larger than the target block error rate. By adopting the method, the reliability and throughput in the uplink information transmission process can be improved.

The application discloses a method and device for reporting transmission mode in a node for wireless communication. A first node measures at least a first RS resource; and transmits at least first control information. The transmission mode indicated by the first control information includes at least a first modulation mode, the transmission mode indicated by the first control information is obtained based on at least the measurement on the at least first RS resource; and the transmission mode indicated by the first control information satisfies that N bit blocks adopting the transmission mode indicated by the first control information are received with a block error rate not exceeding a first threshold, the N bit blocks respectively adopt N encoders, N is a positive integer greater than 1, and the first threshold is a positive real number greater than 0 and less than 1.

The invention discloses a digital channel simulation system for satellite-ground link simulation based on digital twinning, and the system is characterized in that a digital channel simulator receives configuration information sent by a simulation operation platform, receives ephemeris information pushed by a digital satellite model, and obtains channel simulation parameters carried in a target message; determining measurement information based on the configuration information, the ephemeris information and the channel simulation parameters; wherein the measurement information comprises a signal to interference plus noise ratio (SINR), a received signal strength indicator (RSSI), Doppler frequency offset, time offset and a carrier-to-interference ratio (C / I). According to the SINR and an SINR-block bit error rate (BLER) mapping curve generated by off-line simulation, determining a BLER corresponding to the SINR; and determining a cyclic redundancy check (CRC) result based on the BLER. And the simulation precision and the calculation efficiency are balanced.