118 results about "Automatic repeat request" patented technology

Embodiments of this disclosure provide a hybrid automatic repeat request (HARQ) bitmap information feedback method and a related device. The method includes: A terminal receives indication information from an access network device, where the indication information is used to determine whether HARQ feedback is needed for a transmit block transmitted in a plurality of downlink transmission units. The terminal determines HARQ bitmap information based on the indication information, where the HARQ bitmap information includes HARQ feedback information of at least one target transmission unit, and the target transmission unit indicates a downlink transmission unit that needs HARQ feedback in the plurality of downlink transmission units. The terminal sends the HARQ bitmap information to the access network device. Some embodiments of the present disclosure can reduce feedback resource overheads in an NTN scenario, reduce a communication delay, and improve a communication throughput rate.

A method and a user equipment for performing a Hybrid Automatic Repeat Request (HARQ) operation are provided. The method includes: receiving, from a Base Station (BS), a first configuration for a serving cell, the first configuration including a first bitmap for indicating a HARQ mode of each HARQ process in a first HARQ process set, each bit in the first bitmap being associated with a corresponding HARQ process in the first HARQ process set; and identify, based on the first bitmap, whether each HARQ process in the first HARQ process set is related to a first HARQ mode or a second HARQ mode.

A wireless transmit / receive unit (WTRU) is configured to receive configuration information. The configuration information comprises an indication of a sidelink hybrid automatic repeat request (HARQ) round trip time (RTT) timer and a sidelink HARQ retransmission timer. The WTRU is configured to start the HARQ RTT timer based on whether the WTRU is configured with resources for a physical uplink control channel (PUCCH) for reporting sidelink HARQ feedback. The WTRU is configured to start the sidelink HARQ RTT timer after an end of a corresponding PUCCH transmission that includes SL HARQ feedback, on a condition that the WTRU is configured with resources for the PUCCH transmission. The WTRU is configured to start the sidelink HARQ RTT timer following a reception of a downlink control information that schedules a sidelink transmission, on a condition that the WTRU is not configured with PUCCH resources.

This application pertains to the field of communication technologies, and discloses a hybrid automatic repeat request HARQ feedback method and apparatus, and a terminal. The HARQ feedback method in embodiments of this application includes: determining, by a terminal based on first information, a HARQ feedback codebook to be sent based on a target physical uplink control channel PUCCH occasion, where the first information includes an inactive period of discontinuous transmission DTX in a target cell or discontinuous reception DRX in a target cell, and the target cell includes a serving cell of the terminal.

Provided is an information processing device that includes an acquisition unit that acquires information about sidelink communication. The information processing device further includes a determination unit that determines whether to enable feedback related to a data automatic repeat request in the sidelink communication based on the information about the sidelink communication.

The invention provides a hybrid automatic repeat request (HARQ) feedback method and device, equipment and a medium. The method comprises the step of sending HARQ feedback of a downlink shared channel (PDSCH) based on multi-cell downlink control information (MC) DCI scheduling. When the base station schedules the multi-cell scheduling scheme to the terminal, the method can enable the terminal to perform HARQ feedback for the multi-cell scheduling scheme.

This invention provides a CSI transmission method, a method for triggering CSI transmission, and related equipment. The CSI transmission method includes controlling the CSI transmission according to the data type of the Channel State Information (CSI); wherein the data type includes types that require mixed Automatic Repeat Request (HARQ) feedback and types that do not require HARQ feedback. The CSI transmission method provided by this invention offers a CSI transmission mode that can be used on secondary links, thereby improving the performance of CSI transmission on secondary links.

A method and apparatus for transmitting automatic repeat request acknowledgement feedback information supporting multicast service, the method comprising: receiving N pieces of first downlink control information (DCI) and M pieces of second DCI in at least one first time unit, the first DCI being DCI of a first type, the second DCI being DCI of a second type, each first DCI comprising a first downlink allocation index (DAI), each second DCI comprising a second downlink allocation index (DAI) of a second type, the first DAI comprises a first downlink allocation index counter (C-DAI), and the first C-DAI indicates the cumulative number of the DCI of the first type transmitted by scheduling a downlink data channel; each piece of second DCI comprises a second downlink allocation index (DAI), the second DAI comprises a second downlink allocation index counter (C-DAI), and the second C-DAI indicates the cumulative number of the DCI of the second type transmitted by scheduling a downlink data channel; and receiving N first downlink data channels and M second downlink data channels in at least one second time unit, generating a codebook of automatic repeat request acknowledgement (HARQ-ACK) feedback information, and sending the codebook in a third time unit.

A terminal receives downlink control information and determines a feedback method for an automatic retransmission request based on information on a priority pertaining to downlink control information in data distribution for a plurality of terminals.

The invention provides a 5GNR HARQ retransmission self-adaption method and device and related equipment, and relates to the technical field of communication. According to the technical scheme, in the process that communication equipment transmits target data to a base station, under the condition that a hybrid automatic repeat request HARQ is generated, a modulation and coding strategy MCS and a resource block RB corresponding to the HARQ are recalculated, and the target data are transmitted to the base station. According to the embodiment of the invention, the target terminal sends the target data to the target terminal according to the MCS, the RB and the target k0, traversal matching is carried out in a plurality of preset k0, the target k0 matched with the resource block RB is determined, and the target data is sent to the target terminal again according to the MCS, the RB and the target k0, so that transmission parameters are adaptively adjusted in the HARQ retransmission process, and the success rate of HARQ retransmission is improved.

To provide an apparatus, a system, and a method that can continue to receive a data channel normally even when collision between a PDSCH / PUSCH and a UL / DL symbol is permitted.SOLUTION: In a wireless communication system, a terminal 200 includes a receiving unit that receives single downlink control information that schedules a plurality of downlink data channels, and a control unit that determines a codebook in which feedback of automatic repeat requests for the downlink data channels is to be included based on receiving the plurality of downlink data channels scheduled by the single downlink control information.SELECTED DRAWING: Figure 4

The present application relates to devices and components including apparatus, systems, and methods for measurements for user equipment-initiated beam reporting. In the downlink control information (DCI) for indicating the uplink resource for the beam report, some legacy fields such as a HARQ process number field, RV field, MCS field or a FDRA field are set to specific values to be used a validation field of the uplink resource allocation field. RRC signalling may indicate a first resource list and a second resource list, wherein resources of the first resource list are used for carrying hybrid automatic repeat request (HARQ)-acknowledgment (ACK) feedback and not UEIBR messages, and resources of the second resource list are used for carrying HARQ-ACK feedback and UEIBR messages. Generation of the report based on collision rules whether to transmit the UEIBR or the network-initiated (NWI)-channel state information (CSI) report in the uplink resource.

Systems and methods for providing a seamless automatic repeat request (ARQ) stream are provided. The system can include a plurality of streaming servers, a load balancer, and an ARQ streaming service.

The embodiment of the invention discloses a method and a device for sending and receiving a hybrid automatic repeat request (HARQ), and the method comprises the steps: receiving downlink data, generating HARQ feedback information according to the downlink data, and sending the HARQ feedback information in a first feedback mode or a second feedback mode according to an interoperation priority, the terminal equipment supports interoperation between the first feedback mode and the second feedback mode, so that the terminal equipment can flexibly switch the feedback modes according to needs to send the HARQ feedback information, the situation that the HARQ feedback information is discarded is avoided, and the HARQ feedback information transmission efficiency is improved. And the transmission reliability and the feedback efficiency of the HARQ feedback information are ensured.

This provides an uplink feedback method that operates using multiple carriers. [Solution] The method in a wireless transceiver unit (WTRU) includes the steps of: receiving a plurality of transport blocks on a plurality of configured carrier sets; generating hybrid automatic retransmission request (HARQ)-acknowledgment (ACK) feedback for the plurality of transport blocks; and determining the number of HARQ-ACK feedback bits to be used for the HARQ-ACK feedback. The WTRU may apply Reed-Muller coding to the HARQ-ACK feedback bits if the number of HARQ-ACK feedback bits is less than or equal to a threshold, or apply convolutional coding if the number of HARQ-ACK feedback bits is greater than the threshold. The WTRU may then transmit the encoded HARQ-ACK feedback bits.

The invention relates to the technical field of wireless networking, in particular to a multipath anti-interference method for a centerless broadband ad hoc network based on random network coding. Comprising the following steps: a relay node scans a wireless spectrum to generate a networking channel quality spectrum, and generates a networking compensation instruction based on a forward link loss rate; performing network packet recombination on the basic network payload by using a local networking topology vector in response to the instruction, and generating a link transmission compensation packet; executing a fluid routing distribution strategy according to channel quality, and pushing aggregated wireless relay data streams to a multipath next hop node in parallel; the automatic retransmission request is intercepted based on the fed back valid arrival rank. Through deep coupling of network layer topology recombination and multipath routing scheduling, active compensation and low-delay transmission of link loss in a complex electromagnetic environment are realized, and the throughput and reliability of an ad hoc network are remarkably improved.

The application provides a communication method and device, and relates to the technical field of communication. In the method, an automatic repeat request mechanism is realized by a medium access control (MAC) entity, that is, a transmission status report of a MAC service data unit (SDU) is generated by the MAC entity of a data receiving end and is fed back to a data sending end, so that the data sending end realizes data retransmission according to the status report, thereby reducing the transmission delay of the status report and improving transmission efficiency.

Systems and procedures are provided to deliver a seamless automatic retry request (ARQ) stream. The system can include a multitude of streaming servers, a load balancer, and an ARQ streaming service. The ARQ streaming service receives encoded content segments and transmits them to a multitude of streaming servers. The multitude of streaming servers is configured to transmit the encoded content segments to a customer computing device, and a load balancer is implemented between the customer computing device and the multitude of streaming servers. If the customer computing device sends a response message to the ARQ streaming service while receiving the encoded content segments from one of the multiple streaming servers, the ARQ streaming service can identify a failure in that streaming server.The ARQ streaming service retransmits lost encoded content segments by switching the streaming path to a different streaming server from among the multitude of streaming servers.

According to an embodiment of the disclosure, a method of operating a transmitting device in a wireless communication system includes obtaining a plurality of radio link control (RLC) data protocol data units (PDUs) in an RLC entity; generating an automatic repeat request (ARQ) PDU corresponding to an RLC data PDU set including at least one of the plurality of RLC data PDUs based on a resource allocation in the RLC entity; transmitting, from a medium access control (MAC) layer, a first MAC PDU generated based on the RLC data PDU set and the ARQ PDU to a receiving device through a lower layer; and receiving a status PDU associated with the RLC data PDU set when a certain condition is satisfied, wherein the ARQ PDU includes information for processing an operation related to the RLC data PDU set.

A terminal apparatus includes a receiver and a transmitter. The receiver receives, from a base station, a downlink assignment index (DAI) that is transmitted by means of a downlink control information (DCI) format. The DAI indicates an accumulative number of a transmitted physical downlink shared channel (PDSCH) included in a group of PDSCHs. A range of the accumulative number of which the DAI is indicative is variably configured. The transmitter, in operation, transmits, to the base station, hybrid automatic repeat request acknowledgement (HARQ-ACK) information based on the DAI.

A method for mapping a physical hybrid automatic repeat request indicator channel, PHICH, in groups of a plurality of PHICHs, to orthogonal frequency division multiplexing, OFDM, symbols, each OFDM symbol comprising of a plurality of resource element groups, each resource element group being comprised of four resource elements, the method comprising: • determining indexes of resource element groups in which the PHICH is transmitted, the method being characterised in that said indexes are determined according to a cell identifier, ID, multiplied by the ratio n l i ' ' / n 0 ' or n l i ' ' / n 1 ' of the number n l i ' ' of available resource element groups in the OFDM symbol, having index l i ' , in which the i th repetition of the PHICH of a PHICH group is transmitted, i being an integer of 0 to 2, and the number n 0 ' or n 1 ' of available resource element groups in the first OFDM symbol, having index 0, of a sub-frame or in the second OFDM symbol, having index 1, of a subframe, the PHICH being transmitted through one, two or three OFDM symbols, wherein said indexes are determined according to the ratio n l i ' ' / n 0 ' when the PHICH is transmitted through one or three OFDM symbols, and wherein said indexes are determined according to the ratio n l i ' ' / n 1 ' when the PHICH is transmitted through two OFDM symbols and the first PHICH group is started from the second OFDM symbol, where the index l i ' = 0, if the PHICH is transmitted through one OFDM symbol, where the index l i ' = ( ⌊ m ' / 2 ⌋ + i + 1 ) m o d 2, m ' denoting an index of the PHICH group including the PHICH, if the PHICH is transmitted through two OFDM symbols, and where the index l i ' = i , if the PHICH is transmitted through three OFDM symbols, available resource element groups being resource element groups which can be used for PHICH transmission in the respective OFDM symbol, and • mapping the PHICH to the OFDM symbols according to the determined indexes.

A communication method and apparatus, applicable to the technical field of communications, for use in improving communication performance. The method comprises: a terminal device determining a first sequence, wherein the first sequence is any one of the following: a synchronization sequence, a paging sequence, a random access sequence, a reference signal sequence, a sequence used for generating a wake-up signal, a sequence used for generating a hybrid automatic repeat request signal, or a sequence used for generating data; and sending a first signal, or receiving a first signal, wherein the first signal is generated on the basis of the first sequence, and the first signal is carried by a first resource; wherein the first resource is used for carrying at least one sequence in a plurality of cells, and the at least one sequence comprises the first sequence; and / or the terminal device is identified by a first identifier in the plurality of cells.

A method performed by a user equipment includes receiving a first sidelink (SL) entity downlink control channel (PDCCH) from a base station (BS), where the first SL PDCCH provides scheduling information for at least one sidelink transmission; acquiring a value of a side link assignment indication (SAI) field from the first SL PDCCH, wherein the value of the SAI field indicates a cumulative number of a first received SL PDCCH up to the first SL PDCCH; and constructing a hybrid automatic repeat request (HARQ) codebook for a first number of SL transmissions scheduled by a second number of a second received SL PDCCH; wherein the hybrid automatic repeat request codebook is transmitted from the user equipment to the base station, the first number of SL transmissions includes at least one SL transmission, the second received SL PDCCH includes the first received SL PDCCH, and the first received SL PDCCH includes the first SL PDCCH.

The invention discloses a method for adjusting a modulation and coding strategy. The method comprises the steps that according to service quality parameters and channel quality information, it is determined that a hybrid automatic repeat request function is opened or closed for terminal equipment, and the terminal equipment is terminal equipment in a non-ground network high-orbit satellite communication scene; and after determining that the hybrid automatic repeat request function is opened or closed for the terminal equipment, receiving a downlink data decoding result sent by the terminal equipment, and adjusting a modulation and coding strategy according to the downlink data decoding result. According to the method and the device, the technical problem that the transmission efficiency and the transmission reliability are reduced due to the fact that a hybrid automatic repeat request function cannot be dynamically switched and a modulation and coding strategy cannot be adaptively adjusted in related technologies is solved.

The application discloses a hybrid automatic repeat request feedback processing method and device and a terminal, and belongs to the technical field of communication. The hybrid automatic repeat request feedback processing method comprises the following steps: in the case that a first hybrid automatic repeat request feedback (HARQ-ACK) and a second HARQ-ACK are in one time unit, and a codebook used by the first HARQ-ACK is a first codebook, a terminal generates HARQ-ACK information of the first HARQ-ACK and the second HARQ-ACK according to the first codebook, or generates HARQ-ACK information according to the priority of the first HARQ-ACK and the priority of the second HARQ-ACK.

An information sending method, an information receiving method, a terminal, and a control node are provided. The information sending method is applied to a sending end and includes: sending first information to a receiving end; where the first information is used to assist the receiving end in determining whether to perform hybrid automatic repeat request HARQ feedback; and the first information includes at least one of the following: a communication range indicator, a correspondence between side lengths of geographical zones and communication ranges, a geographical zone division rule, and a coverage area identifier of a control node serving the sending end.

A configuration method and apparatus for a control channel, and a communications device are provided. When a first control channel schedules a plurality of data channels, the method includes: establishing a second control channel; and performing hybrid automatic repeat request acknowledgement codebook processing on at least one of the data channels based on the second control channel.

A method of receiving data at a communications device from a wireless communications network is provided. The method comprises receiving downlink control information indicating an allocation of downlink communications resources of a wireless access interface provided by the wireless communications network for receiving downlink data, the downlink control information further providing an indication of a relative priority associated with the received downlink data; and receiving the downlink data from the allocated downlink communications resources. In accordance with an automatic repeat request procedure, the communications device subsequently performs the steps of determining whether the downlink data is successfully received; and generating an automatic repeat request acknowledgement or negative acknowledgement, HARQ-ACK, in dependence on whether the downlink data is successfully received. The communications device subsequently performs the steps of determining that an uplink communications resource for transmitting the HARQ-ACK is not available; using a transmission rule to identify a next available uplink communications resource presenting an opportunity for transmitting the HARQ-ACK; and determining, using the indication of the relative priority associated with the received downlink data, whether the communications device is able to transmit the HARQ-ACK in the next available uplink communications resource as the resource opportunity for transmitting the HARQ-ACK.

Systems and methods related to prioritization of scheduling request (SR) and hybrid automatic repeat request (HARQ) feedback information are disclosed herein. In one embodiment, a method performed by a wireless communication device for prioritization between a scheduling request (SR) occasion and hybrid automatic repeat request acknowledgement (HARQ-ACK) information scheduled on overlapping physical uplink control channel (PUCCH) resources includes prioritizing or multiplexing the SR occasion on a first PUCCH resource and the HARQ-ACK information on a second PUCCH resource, the first PUCCH resource and the second PUCCH resource at least partially overlapping in time. In this way, a delay improvement for uplink (UL) is provided without introducing higher downlink (DL) load nor introducing inter-cell interference, as unnecessary retransmissions can be avoided.

A system and method are provided for joint hybrid automatic repeat request (HARQ) feedback for Physical Downlink Shared Channel (PDSCH) transmissions across multiple Transmission Routers (TRPs). In some embodiments, the method for implementing transmission feedback, performed by a wireless device, includes: receiving a first transport block (TB) and a second TB; and determining the first TB and the second TB based on a CORESET group identifier of a control resource set (CORESET) that schedules the received downlink control information (DCI). In this way, the New Radio (NR) Rel-15 procedure for constructing a Type 1 HARQ codebook can be reused with a semi-static HARQ-ACK codebook with the same or minimal increase in HARQ feedback overhead.