95 results about "Service data unit" patented technology

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration associated with a first logical channel (LCH) with a first priority, wherein the configuration indicates one or more parameters to adjust data assigned to the LCH from the first priority to a second priority. The UE may adjust a priority of a service data unit (SDU) associated with the first LCH to the second priority in accordance with the one or more parameters. The UE may transmit the SDU via uplink shared channel (UL-SCH) resources based at least in part on the second priority. Numerous other aspects are described.

Various aspects of the present disclosure relate to enhanced packet data convergence protocol (PDCP) operation for delay-critical services. An apparatus, such as a user equipment (UE), receives a configuration message for a PDCP entity of the UE. The configuration message indicates a set of timer configurations corresponding to a set of priority levels (e.g., protocol data unit (PDU) priority levels). A network equipment (NE) configures a mapping between the set of timer configurations and the set of priority levels and transmits the configuration message according to the mapping. The PDCP entity receives at least one service data unit (SDU) for transmission. The SDU is associated with a radio bearer and a priority level of the set of priority levels. The UE selects a timer configuration from the set of timer configurations based on the priority level associated with the SDU. The UE initiates a timer according to the timer configuration.

Methods, systems, and devices for wireless communications are described. A first device may transmit control signaling to a second device. The control signaling may indicate a set of different modulation and coding schemes (MCSs) to be applied to at least one of a set of spatial streams or a set of resource units (RUs), where the control signaling may indicate that a respective MCS to be applied to a respective spatial stream or to a respective RU. The first device may transmit, one or more first bits of a first service data unit to the second device via a first spatial stream of or via a first RU using a first MCS and transmit one or more second bits, of the first service data unit or of a second service data unit via a second spatial stream or via a second RU using a second MCS.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The disclosure provides a method and a device for discarding RLC AM data in a wireless communication system. The method of a terminal comprise: receiving, from a base station, a message comprising information on a timer for a radio link control (RLC) service data unit (SDU) discard at an RLC entity of the terminal; receiving, from the base station, an acknowledged mode (AM) data (AMD) protocol data unit (PDU) with a sequence number (SN) x; when an AMD PDU with a SN y lower than x is not received, starting the timer; and when the timer expires, discarding at least one AMD PDU from a buffer with a SN lower than x+1.

The present disclosure relates to a method of performing operations for a User Equipment (UE) in a wireless communication system. In particular, the method is performed by a Radio Link Control (RLC) entity of the UE and includes the steps of: receiving a RLC Service Data Unit (SDU) from a Packet Data Convergence Protocol (PDCP) entity of the UE; segmenting the RLC SDU into a plurality of RLC SDU segments based on an uplink (UL) grant; submitting at least one RLC SDU segment among the plurality of RLC SDU segments to a Medium Access Control (MAC) entity of the UE; and based on a missing indication related to the at least one RLC SDU segment being received from the MAC entity, discarding remaining RLC SDU segments related to the RLC SDU.

A first access point (AP) receives, from a second AP, a first physical layer (PHY) Protocol Data Unit (PPDU). The first PPDU indicates a first basic service set (BSS) color that does not match a BSS color of the first AP, a second BSS color different from the first BSS color, and a PPDU format, for the first PPDU, indicating an inter-BSS PPDU. Based on the PPDU format indicating the inter-BSS PPDU, the first AP determines whether the second BSS color matches the BSS color of the first AP. Based on the second BSS color matching the BSS color of the first AP, the first AP decodes a physical layer service data unit (PSDU) comprised in the first PPDU.

According to an implementation mode, a communication device receives a packet data convergence protocol (PDCP) protocol data unit (PDU) on a data radio bearer (DRB) configured for the communication device, and the PDCP protocol data unit (PDU) is configured on the data radio bearer (DRB) configured for the communication device. The PDCP PDU comprises an indication of a transmission mode, the transmission mode is used for transmitting a PDCP SDU (Service Data Unit) received on the DRB to an upper layer associated with the communication equipment, and the indication of the transmission mode indicates in-order transmission (IOD) or out-of-order transmission (OOD). The communication device processes the PDCP PDU to generate a PDCP SDU and a COUNT value associated with the PDCP SDU. And the communication equipment transmits the PDCP SDU to the upper layer according to the indication of the transmission mode.

The present application provides a data processing method, an electronic device, a storage medium, and a program product. The method comprises: acquiring multiple target transmit entities belonging to a same resource bearer (RB) group, and an expected transmit variable value of the RB group (S110); on the basis of the expected transmit variable value, configuring a sequence variable value of a service data unit (SDU) from an upper layer received by any one of the target transmit entities (S120); updating the expected transmit variable value according to a preset step size value, so that sequence variable values corresponding to multiple SDUs in the same group can be made sequential, causing PDUs generated on the basis of the SDUs to also be sequential (S130).

The present disclosure relates to a method of performing an operation for a packet data convergence protocol (PDCP) entity of a user equipment (UE) in a wireless communication system. Specifically, the method comprises the following steps: establishing a PDCP entity; starting a drop timer for the PDCP entity at the reference time; receiving at least one PDCP service data unit (SDU) from an upper layer during a drop timer for the PDCP entity is running; and discarding the at least one PDCP SDU based on expiration of the discard timer for the PDCP entity.

A method performed by a user equipment (UE) in a wireless communication system is provided. The method includes identifying a channel access priority class (CAPC) for sidelink, and performing a channel access procedure for transmitting a sidelink transport block (TB), based on the CAPC for the sidelink, wherein the CAPC for the sidelink is determined as one of: a highest priority CAPC based on a sidelink medium access control control element (MAC CE) included in the sidelink TB, the highest priority CAPC based on a sidelink control channel (SCCH) service data unit (SDU) included in the sidelink TB, or a lowest priority CAPC of at least one sidelink logical channel with MAC SDU multiplexed in the sidelink TB.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a terminal in a wireless communication system is provided. The method includes transmitting, to a base station, first information indicating that the terminal supports a delay status report (DSR) of a buffered data, receiving, from the base station, configuration information on a plurality of remaining time thresholds per logical channel group (LCG), and transmitting, to the base station, second information including a remaining time field indicating the shortest remaining time among packet data convergence protocol (PDCP) service data units (SDUs) associated with a corresponding remaining time threshold of an LCG.

The present disclosure relates to a method of performing operations for a user equipment (UE) in a wireless communication system. In particular, the method includes steps of transmitting, to a network, a plurality of service data units (SDUs); based on at least one SDU among the plurality of SDUs being discarded, transmitting, to the network, a sequence number (SN) gap report including information related to the at least one SDU; and receiving, from the network, a status report; and based on the status report including a negative acknowledgement for the at least one discarded SDU, retransmitting, by the UE to the network, the SN gap report.

The present disclosure relates to a method of performing operations for a user equipment (UE) in a wireless communication system. In particular, the method includes steps of based on a smallest remaining value of the running discard timers among all service data units (SDUs) buffered for a logical channel that have not been transmitted in any medium access control (MAC) protocol data unit (PDU) becoming below a remaining time threshold, triggering a delay status report (DSR); based on information related to a reporting threshold list for a multiple entry DSR being received, generating a multiple entry DSR MAC CE; and transmitting the multiple entry DSR MAC CE, wherein the multiple entry DSR MAC CE includes information related to at least one buffer size indicating data volume associated with at least one reporting threshold from the reporting threshold list; and wherein data volume associated with a first reporting threshold from the reporting threshold list is calculated based on Packet Data Convergence Protocol (PDCP) Control PDUs, PDCP SDUs to be retransmitted, and PDCP data PDUs to be retransmitted.

Disclosed herein are systems, methods, and instrumentalities associated with autonomous service data unit (SDU) retransmissions and / or radio link failure (RLF) handling. A wireless transmit / receive unit (WTRU) may receive configuration information associated with a service data unit (SDU), wherein the configuration information may indicate a first condition and a second condition associated with SDU retransmission. The first condition may be related at least to a remaining time associated with the SDU and the second condition may be related at least to whether a part of the SDU is pending for transmission. The WTRU may be further configured to determine whether the first condition and the second condition are both met, and based on a determination that the first condition and the second condition are both met, the WTRU may re-transmit at least a segment of the SDU.

This application discloses an enhanced RLC AM mode reliable transmission method and apparatus for base stations and repeaters, comprising: responding to a data transmission command, determining the number of sequence numbers (SNs) within a transmission window, wherein the SNs within the transmission window are the SNs of Service Data Units (SDNs) that have been transmitted but have not received acknowledgment; determining whether the number of SNs has reached a preset threshold, which is less than the window length; if the number of SNs has reached the preset threshold, actively transmitting the first PDU (Programmable Dedicated Unit) within the transmission window that has not received a positive acknowledgment (ACK) to the UE using an enhanced strategy, wherein the PDU includes multiple SDUs; and, if a reception failure is determined based on a status report fed back by the user terminal UE, restarting the base station or notifying higher layers to stop transmitting SDUs. This solves the problem that existing methods cannot delete data cached in memory when the transmission window is blocked, and because higher layers continuously send data to the cache, the base station eventually crashes due to memory exhaustion.

A wireless communication device (10; 100) sends one or more wireless transmissions conveying a sequence of Service Data Units (SDUs) in a sequence of Packet Data Units (PDUs) to a further wireless communication device. Each of the SDUs has a format comprising at least a header part with an SN of the SDU. Each of the PDUs has a PDU format comprising a header part and a data part for conveying at least an SDU segment of at least one of the SDUs of the sequence. If a first SDU segment included at the beginning of the data part of the PDU is without the SN of the SDU corresponding to the first SDU segment, the header part of the PDU includes the SN of the SDU corresponding to the first SDU segment.

The embodiment of the invention relates to a data transmission method, communication equipment and a communication system. The data transmission method comprises the following steps: under the condition that initial protocol data units (PDUs) of adjacent caches in a cache region of a sending end belong to the same service data unit (SDU), the sending end performs combination operation on the initial PDUs of the adjacent caches according to a PDU data capacity threshold value negotiated with a receiving end in advance; and transmitting the target PDU after the combination operation. Wherein the data capacity of each target PDU, except the capacity of the last PDU, is smaller than or equal to the PDU data capacity threshold value, and the capacities of the other PDUs are equal to the PDU data capacity threshold value, so that the problem of low cache PDU transmission efficiency caused by the change of the data length of the transmitted PDU in the Bluetooth communication process is effectively solved.

The invention is suitable for the technical field of power system communication security, and relates to a method for realizing a security protection mechanism by a multi-protocol architecture, a medium and a terminal, comprising the following steps: defining a security protection module and a universal interface set; when the protocol module is initialized, a configuration interface is called to register parameters related to a protocol and a link layer data transceiving interface to the security protection module; after receiving an application service data unit ASDUs, the protocol module calls a data interface for processing the ASDUs to process the data; the protocol module calls a security state monitoring interface for detection; before the protocol module prepares to send data, a process stop state obtaining interface is called, and whether a protocol process is suspended or not is determined; and when the protocol module knows that the flow does not need to be stopped, calling a data interface for sending the ASDUs to send data, and if the ASDUs are key ASDUs, controlling the security protection module to enter a challenge waiting state. According to the invention, multiple protocols share one set of security protection mechanism, the software cost is reduced, and the operation and maintenance efficiency is improved.

This disclosure provides methods, components, devices and systems for signaling support for multiple coding schemes to a single user device spanning a frequency domain. A first wireless device may identify respective quality information associated a set of resource units (RUs) that span a frequency bandwidth. The first wireless device may transmit information signaling that indicates a first modulation and coding scheme (MCS) or a first modulation pattern to be applied to a first RU and a second MCS or a second modulation pattern to be applied to a second RU. The first wireless device may communicate first bits of a first service data unit via the first RU using the first MCS or the first modulation pattern, and second bits, of the first service data unit or of a second service data unit, via the second RU using the second MCS or the second modulation pattern.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The disclosure provides a method and a device for discarding RLC AM data in a wireless communication system. The method of a terminal comprise: receiving, from a base station, a message comprising information on a timer for a radio link control (RLC) service data unit (SDU) discard at an RLC entity of the terminal; receiving, from the base station, an acknowledged mode (AM) data (AMD) protocol data unit (PDU) with a sequence number (SN) x; when an AMD PDU with a SN y lower than x is not received, starting the timer; and when the timer expires, discarding at least one AMD PDU from a buffer with a SN lower than x+1.

A method for timer adjustment in packet transmission and a user equipment are provided. The method includes: obtaining a plurality of service data units comprising a first service data unit; initializing a discard timer corresponding to the first service data unit of a first traffic type; performing logical channel prioritization to select a second service data unit from the plurality of service data units; determining a second traffic type of the second service data unit; and in response to determining the second traffic type, adjusting the discard timer for the first service data unit in a buffer.

The present disclosure relates to a method of performing operations for a User Equipment (UE) in a wireless communication system. In particular, the method includes steps of configuring a fixed size of a service data unit (SDU) for a logical channel; based on a plurality of SDUs being received from the logical channel, generating a medium access control (MAC) protocol data unit (PDU) including a single header and the plurality of SDUs; and transmitting the MAC PDU to a network, wherein, based on a total size of the plurality of SDUs not being multiple of the fixed size, the single header further includes the total size of the plurality of SDUs.

The application provides a data fragment reorganization method, device, equipment and storage medium. The method comprises the following steps: receiving at least one protocol data unit (PDU) sent by a sending end radio link control (RLC) layer; analyzing the RLC protocol header of each PDU to obtain the fragment attribute information of each PDU; storing the storage address information of homologous PDUs belonging to the same RLC service data unit (SDU) into the address storage space corresponding to the RLC SDU; in response to the fact that the homologous PDUs belonging to the same RLC SDU have all been received, sending the storage address information of each homologous PDU to a security processing chip, so that the security processing chip reads the data fragments in each homologous PDU in sequence according to the storage address information of each homologous PDU and forms an RLC SDU; and receiving the RLC SDU sent by the security processing chip. The method provided by the application can improve the efficiency of the receiving end equipment in obtaining complete RLC SDU data.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration associated with a first logical channel (LCH) with a first priority, wherein the configuration indicates one or more parameters to adjust data assigned to the LCH from the first priority to a second priority. The UE may adjust a priority of a service data unit (SDU) associated with the first LCH to the second priority in accordance with the one or more parameters. The UE may transmit the SDU via uplink shared channel (UL-SCH) resources based at least in part on the second priority. Numerous other aspects are described.

The present disclosure relates to a 5G communication system or a 6G communication system for supporting higher data rates beyond a 4G communication system such as long term evolution (LTE). A method for handling segmentation in a converged layer 2 (L2) communication network is provided. The method includes assigning, by a converged L2 of a transmitter, a L2 sequence number (SN) to a protocol data unit (PDU). The L2 SN includes at least one of a last segment indication (LSI) indicating a presence of a last service data units (SDU) of the complete PDU, a length indicator exist (LIE) indicating a presence of a length indicator (LI) after a L2 header, or a SI indicating a segmentation status or stage of the complete PDU, receiving, by a medium access control (MAC) layer of the transmitter, a grant opportunity or a transmission opportunity for transferring the PDU available at the converged L2, and sending the PDU to a lower layer of the transmitter for transmission to a receiver with or without segmentation based on the grant or a transmission opportunity.

Systems, methods, apparatuses, and computer program products for protocol data unit (PDU) with service data unit (SDU) segment and indication of SDU-tail length. A method may include transmitting, to a network element, a radio link control data protocol data unit including a non-last segment of a service data unit. The protocol data unit may include an indication of a number of bytes of the service data unit that follow this segment in the service data unit.

A transmitter node of a telecommunications system comprises interface circuitry and processor circuitry. The interface circuitry is configured to receive a status message over a radio interface from a receiver node regarding a packet. The processor circuitry is configured to make a determination that both (1) the status message indicates that the packet was not received from the receiver node; and (2) the packet is considered to be an obsolete packet; and, in accordance with the determination, to generate an obsolete packet indication message that identifies the packet as the obsolete packet. The interface circuitry is further configured to transmit the obsolete service data unit indication message that identifies the packet as the obsolete service data to the receiver node. Methods of operating such nodes are also provided.

The present disclosure relates to a method of performing operations for a User Equipment (UE) in a wireless communication system. In particular, the method includes transmitting, to a network, a request message for inserting a Service Data Adaptation Protocol (SDAP) header related to a data radio bearer (DRB) for which the SDAP header is configured to be absent; receiving, from the network, a confirmation message of the request message including a first threshold related to a sequence number (SN); receiving, from the network, a first Packet Data Convergence Protocol (PDCP) protocol data unit (PDU) including a first PDCP header and a first PDCP service data unit (SDU); and based on a SN of the first PDCP header being larger than the first threshold, transferring a SDAP SDU included in the first PDCP SDU to an upper layer based on a Quality of Service (QoS) Flow Indicator (QFI) carried in the SDAP header included in the first PDCP SDU.

Various schemes are described for flexible signaling to support unequal modulation and multi-layer transmissions in wireless communications. A device (e.g., a working station (STA)) generates a physical layer protocol data unit (PPDU) and performs a transmission of the PPDU, indicating by signaling one or more of the following: (1) whether the transmission employs unequal modulation (UEQM) or multilayer coding (MLC) and unequal modulation and coding scheme (MCS) levels (UEQ-MCS); (2) whether the transmission is used for a single physical layer convergence process (PLCP) service data unit (PSDU) or multiple PSDUs per user; and (3) whether the transmission adopts joint coding or independent coding.

The present application applies to a wireless personal local network system based on ultra-wide band communication technology, a communication system based on ZigBee, a communication system based on IEEE 802.15.4 protocol. Embodiments of the present application provide a communication method, including: receiving a first protocol data unit (PPDU), where the first PPDU includes type instruction information, where the type instruction information is configured to indicate whether the first PPDU carries a compressed PHY (physical layer) service data unit (PSDU); and processing the information carried by the payload field of the first PPDU. According to the above-mentioned technical solution, the compressed PSDU may be identified according to the type instruction information carried by the PPDU. Therefore, a receiver of the PPDU may process the received PPDU according to the type instruction information.