38 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.

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.

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.

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.

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.

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.

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.

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.

The invention relates to a transmission block segmentation method and related equipment, and the method comprises the steps: determining the number of overlapped bits of transmission block segmentation based on the channel quality indication of receiving equipment and the number of bits of a transmission block; dividing the transport block into a plurality of code blocks based on the number of overlapped bits; the plurality of code blocks comprise at least two code blocks with overlapped bits. According to the embodiment of the invention, the transmission block is divided into the code blocks with the overlapped bits, so that the block error rate of the transmission block can be reduced, and the link adaptive performance of transmission of the transmission block can be improved.

The present application discloses a transmission mode reporting method and apparatus used in a node for wireless communication. The method comprises: a first node performing measurement on at least a first RS resource; and sending at least first control information. A transmission mode indicated by the first control information comprises at least a first modulation mode, and the transmission mode indicated by the first control information is obtained at least on the basis of the measurement on the at least first RS resource; and the transmission mode indicated by the first control information satisfies: when a first encoder is used, a first bit block using the transmission mode indicated by the first control information is received at a block error rate not exceeding a first threshold, wherein the first threshold is a positive real number greater than 0 and less than 1.

Methods, systems, and devices for wireless communications are described. A network may configure user equipments (UEs) with different types of hybrid automatic repeat request (HARQ) process identifiers (IDs) associated with varying complexities and UE capabilities. In the context of HARQ-enabled process IDs, UEs may be expected or configured to transmit ACK or NACK messages in response to downlink messages, and to store log likelihood ratios (LLRs) for failed downlink messages. HARQ-restricted process IDs may be associated with "restricted" HARQ process parameters or functionalities that reduce the complexity of the UE (e.g., reduce processing and / or memory requirements). For example, HARQ-restricted process IDs may be associated with a higher LLR compression ratio to reduce the quantity of data that is stored for LLRs of failed downlink messages. In other cases, HARQ-restricted process IDs may be associated with a lower target block error rate, a lower threshold transport block size, or both.

Provided is a random access method, including: a broadcast signal sent by a base station on a non-SUL carrier is received, the broadcast signal is parsed to obtain a first RSRP threshold and a second RSRP threshold, the first RSRP threshold being an RSRP limit value at which an MsgA PRACH signal is received and parsed on the non-SUL carrier to reach a target block error rate, and the second RSRP threshold being an RSRP limit value at which an MsgA PUSCH signal is received and parsed on the non-SUL carrier to reach a target block error rate; an RSRP of the broadcast signal on the non-SUL carrier is measured to obtain a measured RSRP; and carriers for sending the MsgA PUSCH signal and the MsgA PRACH signal are determined separately according to a numerical relation between the measured RSRP and the first RSRP threshold and the second RSRP threshold.

A link adaptation method according to an embodiment of the present disclosure is a method performed by a base station in a wireless communication system and comprises the operations of: transmitting first URLLC data to a user equipment (UE) on the basis of a first time resource and a first frequency resource; transmitting a padding signal to the UE on the basis of a second time resource and the first frequency resource; receiving a first hybrid automatic repeat request (HARQ) signal for the padding signal from the UE; generating a block error rate (BLER) value; generating a correction constant for a signal-to-interference-plus-noise ratio (SINR) on the basis of the BLER value; correcting an outer loop rate control (OLRC) offset on the basis of the first HARQ signal; correcting the SINR on the basis of the corrected OLRC offset and the correction constant; and on the basis of a modulation and coding scheme (MCS) determined on the basis of the corrected SINR, transmitting second URLLC data to the UE on the basis of a third time resource and the first frequency resource.

UE capability for support of machine-learning (ML) based channel environment classification may be reported by a user equipment to a base station, where the channel environment classification classifies a channel environment of a channel between the UE and a base station based on one or more of UE speed or Doppler spread, UE trajectory, frequency selectivity or delay spread, coherence bandwidth, coherence time, radio resource management (RRM) metrics, block error rate, throughput, or UE acceleration. The user equipment may receive configuration for ML based channel environment classification, including at least enabling / disabling of ML based channel environment classification. When ML based channel environment classification is enabled, UE assistance information for ML based channel environment classification, and / or an indication of the channel environment (which may be a pre-defined channel environment associated with a lookup table), may be transmitted by the user equipment to the base station.

The application provides an industrial Internet of Things adaptive weight design and power optimization method and system, and relates to the technical field of industrial Internet of Things communication and control collaborative design. The method comprises the following steps: constructing an industrial Internet of Things control system model containing a limited retransmission mechanism, analyzing the block error rate and the average transmission number based on the limited code length information theory, and then deducing the effective average information age affected by the retransmission; establishing a linear quadratic regulator control cost model based on the information age, and deducing the linear upper bound relationship between the control cost and the information age; and constructing a joint optimization problem with the communication energy consumption and the control cost as the targets. A three-layer adaptive weight adjustment mechanism is designed according to the real-time channel state, and the multi-objective optimization weight is dynamically adjusted; further, by utilizing the quasi-convex characteristics of the joint cost function, the golden section search algorithm with a hot start is adopted to solve the optimal transmission power, so that the influence of the industrial wireless channel fluctuation on the control stability is effectively relieved.

Wireless communications systems and methods related to video telephony are provided. A device may proactively reduce the bitrate at which video is encoded at the beginning of a video call based on one or more radio metrics. Radio metrics used may include received signal strength indicator (RSSI), received signal received quality (RSRQ), received signal received power (RSRP), signal to noise ratio (SNR), power headroom (PHR), and block error rate (BER). The proactive reduction in bitrate is done prior to transmitting or receiving video data. The device may also request that a second device which is transmitting video do so at a reduced bitrate.

The invention discloses a meteoric trail channel-oriented PAC code construction and interleaving method, which comprises the following steps of: obtaining an interleaving pattern by adopting an enumeration mode, interleaving an under-secret meteoric trail physical channel W through the interleaving pattern to obtain a new LLR sequence under the physical channel W, obtaining an above LLR mean value through iterative calculation, calculating an error probability according to a Q function and the above LLR mean value, and constructing a PAC code according to the error probability. And obtaining an information bit set through the error probability, obtaining a block error rate after interleaving according to the error probability and the information bit set, and selecting an interleaving pattern causing the lowest block error rate as a final interleaving pattern by comparing the block error rates of N interleaving patterns. According to the method, the error code performance of the PAC code is improved, and the reliability of a stream residue system can be greatly improved.

This application discloses communication methods and apparatus, terminal equipment, and network equipment, relating to the field of communication technology. To avoid problems such as high block error rate, low resource efficiency, and poor adaptability caused by directly transmitting the first RRC message, this application proposes a method based on payload segmentation and step-by-step transmission and feedback. In this method, the payload of the first RRC message is segmented into a first segment and a second segment, and the first and second segments are transmitted separately, thus dividing the single transmission of the first RRC message into two transmissions. Then, the network first transmits the first message and then provides feedback on the first message through the second message, thereby completing an independent "transmission-feedback" closed loop. Finally, based on the second message, this application provides the network with the latest channel information for deciding the optimal transmission strategy for the second segment, realizing dynamic adjustment of the transmission strategy and improving the reliability, resource efficiency, and link adaptability of the second segment transmission.

The application discloses a power control method, device and electronic equipment, and belongs to the technical field of communication. The power control method comprises the following steps: determining a block error rate of a target channel for sending a data packet to a base station based on a feedback message sent by the base station to the target channel; and adjusting the transmission power of the target channel according to the block error rate, so that the block error rate of the target channel is less than a first threshold value.