103 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 short packet communication method assisted by an intelligent reflecting surface in an electromagnetic interference environment is characterized in that in a reflective intelligent reflecting surface assisted two-user non-orthogonal multiple access system, the intelligent reflecting surface assists remote users in communication, and a wireless access point sends a short data packet to the two users to realize high-reliability and low-delay communication; an electromagnetic interference source exists in the system, and transmitting power of the electromagnetic interference source and characteristics of transmission channels from the electromagnetic interference source to an intelligent reflecting surface and two users are assumed to be known; the method comprises the following steps: firstly, determining signal to interference plus noise ratio statistical characteristics of decoding of two users by utilizing statistical channel state information; secondly, determining an average block error rate of the two users under a fading channel according to a short packet communication related formula; and finally, under the reliability constraint, determining the optimal power distribution coefficient and the minimum common block length of the system. According to the invention, high-reliability and low-delay communication is realized.

Aspects of the present disclosure provide techniques for communicating channel state information (CSI) reports. In some aspects, downlink resources can be monitored for reception of downlink signaling, a CSI report can be generated based on the reception of the downlink signaling, where the CSI report indicates CSI for each of multiple sub-bands of the downlink resources, and the CSI report can be transmitted with hybrid automatic repeat request (HARQ) acknowledgement or negative acknowledgement (ACK / NACK) feedback associated with the downlink signaling to facilitate retransmission with improved block error rate (BLER). In some aspects, a base station receiving the CSI report, or otherwise based on uplink signals, can determine transmission parameters for retransmission to facilitate the improved BLER.

A method for wireless communication by a network node includes transmitting a first group of frames comprising a group of normal slots and one or more first special slots. The method also includes reconfiguring one or more second special slots within a second group of frames scheduled after the first group of frames based on a block error rate (BLER) associated with the group of normal slots failing to satisfy a BLER condition. The method further includes transmitting the second group of frames based on reconfiguring the one or more second special slots within the second group of frames.

The invention relates to wireless communication. Comprising methods and apparatus for adaptively monitoring radio link conditions of a cellular wireless network using a low power wake-up signal (LP-WUS) burst received by a low power wake-up radio (LP-WUR) of a wireless device if possible and switching to using legacy reference signals received by a primary radio only when needed. The LP-WUS burst is processed by the LP-WUR to determine a block error rate (BLER) value and / or a signal to interference plus noise ratio (SINR) value to determine whether the wireless device is in an out-of-sync (OOS) condition. When the OOS condition is determined, the primary radio may be awakened to perform radio link monitoring, including steering into sleep by the cellular wireless network.

An apparatus and system for channel quality indication (CQI) and aperiodic reporting are described. The UE is configured to use demodulation reference signals (DM-RS) of a physical downlink control channel (PDCCH) or channel state information (CSI) reference signals (CSI-RS) for beam management for CSI reporting. The UE calculates the CQI from the DM-RSI or CSI-RS and sends the CQI to the gNB. The CQI configuration includes power offsets to be applied to the channel measurements for evaluation of the block error rate (BLER) depending on the CQI. Different power offsets are applied for different CQI groups that are determined by the modulation order associated with the calculated CQI.

The embodiment of the invention provides a wireless communication method and device, a storage medium and an electronic device, and the method comprises the steps: receiving configuration information which is transmitted by a wireless communication node and comprises a target block error rate (BLER); and configuring the target BLER according to the configuration information. Through application of the method and the device, the problems of resource waste and relatively low spectrum efficiency caused by the fact that the target BLER is set as an unreasonable fixed numerical value due to the fact that the fixed target BLER cannot optimally adapt to the communication requirement in the related technology are solved, and the effect of improving the spectrum efficiency is further achieved.

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.

A user equipment (UE) is configured to determine a probability metric for a likelihood of a beam failure event at the UE, implement a beam management power saving scheme based on the probability metric and process a portion of network scheduled beam recovery resources within a time window. A UE may also be configured to generate a radio link monitoring (RLM) block error rate (BLER) metric associated with a beam, determine that the RLM BLER metric is below a threshold value and disable beam failure detection (BFD) and candidate beam detection (CBD) procedures at the UE in response to determining that the RLM BLER metric is below the threshold value.

A new radio (NR) bit prioritization procedure that may be executed by a UE and a base station is disclosed, resulting in transmission and reception of modulation symbols having prioritized bits. For example, a transmitter may encode a code block using low-density parity-check code to generate a stream of encoded bits. The transmitter may arrange the encoded bits in one or more modulation symbols according to a relative priority of the encoded bits. The highest priority bits may be located in the most significant bits of the modulation symbol, and therefore be less likely to experience errors. A receiver may receive the modulation symbols and reorder the encoded bits according to the coding scheme based on the relative priority prior to decoding the encoded bits. The prioritization of the bits within the modulation symbols may provide improved block error rates over sequential mapping of encoded bits to symbols.

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.

The application relates to a downlink adaptive method and device under non-terrestrial network hybrid retransmission disabling. The method comprises the following steps: a base station configures downlink hybrid automatic repeat request feedback disabling for a user equipment, and configures prediction channel state information configuration parameters for the user equipment. The base station receives the prediction channel state information reported by the user equipment, and determines downlink inner loop channel quality according to the prediction channel state information. The base station receives the radio link control state report reported by the user equipment, and determines downlink outer loop statistics according to the radio link control state report. The base station determines the final downlink scheduling information according to the downlink inner loop channel quality and the downlink outer loop statistics. The method can realize accurate matching between downlink scheduling information and actual channel quality under the condition of no hybrid automatic repeat request feedback, reduce the block error rate and improve the downlink throughput.

The invention relates to a data retransmission method and device, computer equipment and a storage medium. The method comprises the following steps: determining a problem scene according to the measurement quantity of an uplink physical shared channel and / or determining a problem scene according to a channel quality indication and uplink control information under the condition that the decoding of an initial transmission redundancy version fails; according to the problem scene, a retransmission redundancy version and a re-interpretation code mode are determined, the retransmission redundancy version represents a redundancy version adopted during retransmission, and the re-interpretation code mode is used for indicating a decoding mode adopted under the condition that the retransmission redundancy version is received. By adopting the method, the residual block error rate can be reduced.

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.

An embodiment of the present application provides a communication method and a communication device. The method can be applicable to related fields such as artificial intelligence (AI) and machine learning. The method includes: determining a first channel state; predicting, through a model, a block error rate of sending a data packet in the first channel state based on different transmission parameters, where a first data set for training the model is a data set obtained by expanding values of transmission parameters corresponding to a second data set, the second data set includes first sample data, the first sample data includes information for indicating a second channel state, a first transmission parameter corresponding to the second channel state, and feedback information, the feedback information is used to indicate whether a data packet sent based on the first transmission parameter is successfully received; and sending a first data packet based on a second transmission parameter corresponding to the lowest block error rate predicted by the model.

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.

A method of performing AI based compression model performance monitoring by a UE. The method includes encoding, for transmission to a BS, a UE capability report; decoding configuration information, received from the BS, for training one or more AI based models for predicting radio link failure (RLF); encoding, for transmission to the BS, a notification message indicating to the BS, one or more conditions and availability of the one more AI based models for use by the UE; decoding, from the gNB, an activation instruction; activating the one more AI based models for predicting RLF based on the activation instruction; predicting the RLF using the one or more AI based models based on predicting a block error rate of reference signals or based on classifying a risk level of the RLF based on a plurality of inputs; and transmitting an RLF prediction report to the gNB based on the prediction.

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.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration associated with radio link monitoring (RLM) out-of-synchronization (OOS) and in-synchronization (IS) criteria for extended reality (XR) traffic, wherein the configuration indicates a block error rate (BLER) OOS threshold and a BLER IS threshold for XR traffic. The UE may monitor a downlink radio link quality associated with XR traffic based at least in part on a radio link monitoring reference signal (RLM-RS) in relation to the BLER OOS threshold and the BLER IS threshold for XR traffic. Numerous other aspects are described.