194 results about "Service data unit" patented technology

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 identifying whether a packet data convergence protocol (PDCP) entity is suspended in case that the PDCP entity re-establishment is requested from an upper layer, identifying whether an indicator is configured for indicating that an uplink data compression (UDC) is continuously used and a PDCP service data unit (SDU) is compressed, for an acknowledged mode (AM) data radio bearer (DRB) whose the PDCP entity is not suspended, and submitting the PDCP SDU, in case that the indicator is configured for indicating that the UDC is continuously used and the PDCP SDU is compressed.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may deliver one or more service data units SDUs within a packet data convergence protocol (PDCP) window to an upper protocol layer before an expiration of a timer associated with the PDCP window. The UE may forward the one or more SDUs based on a forwarding rule, as part of a forwarding sub-window of the PDCP window, or both. The UE may deliver the portion of the set of SDUs based on one or more predictions of a machine learning (ML) model and / or functionality associated with SDUs of the PDCP window. In some examples, the UE may report information associated with the PDCP window to a network entity. The UE may receive one or more control messages indicating information associated with the PDCP window.

The invention relates to PDCP SN gap reporting and a state variable RXNEXT. A method, an apparatus, and a computer program product are provided. In the context of a method, the method comprises receiving (302) a message from another PDCP entity (another of the 110 / 112), the message indicating at least one sequence number. The method further comprises updating (304) a first state variable based on the at least one sequence number, where the first state variable indicates an expected sequence number of a next expected service data unit (SDU) to be received, and wherein the updating of the first state variable includes increasing the first state variable by a lowest sequence number that is higher than a reference value and that is associated with the SDU that is not considered to be discarded.

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.

The present disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Specifically, the present disclosure relates to a method performed by a terminal of a wireless communication system, the method comprising the steps of: transmitting a first message including first information indicating whether the terminal supports a packet data convergence protocol (PDCP) sequence number (SN) gap report to a base station; receiving a second message including second information for configuring transmission of a PDCP SN gap report from the base station; triggering a PDCP SN gap report for notifying of the discard of a PDCP service data unit (SDU) on the basis of at least one condition; and transmitting the PDCP SN gap report to the base station.

Embodiments of the subject application relate to methods and apparatuses for a packet data convergence protocol (PDCP) service data unit (SDU) reception handling operation. According to an embodiment of the subject application, a user equipment (UE) includes a processor and a transceiver coupled to the processor; and the processor is configured to: receive a configuration for enabling an update function of a delivery state variable associated with a first packet data convergence protocol (PDCP) service data unit (SDU) not delivered by a PDCP entity of a data radio bearer (DRB) to an upper layer of the UE via the transceiver from a network; and enable the update function of the delivery state variable for the PDCP entity of the DRB based on the configuration.

A wireless frame transmission method is performed by a transmitter. The method includes: transmitting a wireless frame that includes non-low-latency service data and low-latency service data; where the low-latency service data is transmitted between two media access control service data units (MSDUs) of an aggregation of MSDUs (A-MSDU) of the non-low-latency service data; a lifetime parameter of the A-MSDU includes: a first parameter or a second parameter; the first parameter includes a preset lifetime of the non-low-latency service data; and the second parameter includes a sum of the preset lifetime and a transmission duration of the low-latency service data.

In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a receiver in a wireless communication network. The receiver detects, at a Radio Link Control (RLC) layer, a missing RLC Service Data Unit (SDU) based on a discontinuity in received RLC Sequence Numbers (SNs). The receiver starts a discard timer in response to detecting the missing RLC SDU. The receiver determines that the missing RLC SDU is out-of-date upon expiration of the discard timer. The receiver transmits a status report including a positive acknowledgement for the missing RLC SDU despite the missing RLC SDU not being received.

A WLAN station (110; 120) for communicating with a further WLAN station (120; 110) is disclosed. The WLAN station (110; 120) is configured to encrypt a MAC Service Data Unit, MSDU, payload, wherein the MSDU payload comprises a MSDU, an aggregate MSDU, A-MSDU, or a MAC Management Protocol Data Unit, MMPDU, wherein the MSDU, the A-MSDU, or the MMPDU comprises one or more source address values, SAs, and one or more destination address values, DAs. Moreover, the WLAN station (110; 120) is configured to generate a MAC Protocol Data Unit, MPDU, or an aggregate MPDU, A-MPDU, based on the encrypted MSDU payload, and to transmit the MPDU or A-MPDU to the further WLAN station (120; 110).

Methods, systems, and devices for dynamically adjusting a reordering timer are described. A wireless device may receive control signaling indicating a configuration comprising a first set of one or more parameters associated with a reordering timer for a packet data convergence protocol (PDCP) entity of the wireless device, wherein the reordering timer is associated with reordering of a set of service data units (SDUs) by the PDCP entity of the wireless device. The wireless device may determine a duration for the reordering timer according to the first set of one or more parameters associated with the reordering timer, and the wireless device may forward one or more SDUs of the set of SDUs, based at least in part on an expiration of the reordering timer.

The invention relates to a method comprising: receiving or determining, by a wireless device, one or more configuration parameters, the one or more configuration parameters comprising an indication to retransmit a radio link control (RLC) service data unit (SDU) in response to the RLC SDU becoming delay-critical; and retransmitting, by the wireless device, based on one or more conditions being met, the RLC SDU, after the RLC SDU becomes delay-critical.

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.

Embodiments of the present disclosure provide a solution for communication. In a solution, a first devices determine that a report for radio link control (RLC) sequence number (SN) gap is triggered based on at least one of the following conditions is satisfied: an RLC service data unit (SDU) is discarded, a retransmission of the RLC SDU is stopped, the RLC SDU is already associated with an SN value, the discarded RLC SDU has not been submitted to a lower layer, the discarded RLC SDU has been submitted to the lower layer but is not acknowledged, or there is at least one stored RLC SDU associated with an SN value that is not smaller than an SN value associated with a discarded RLC SDU; and transmits the report for RLC SN gap to a second device.

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 and apparatus to support enhanced retransmission is provided. Method for supporting enhanced retransmission includes receiving from a base station a Radio Resource Control (RRC) message, wherein the RRC message comprises a parameter indicating a remaining time threshold related to a radio bearer and a parameter indicating a maximum retransmission number for a Radio Link Control (RLC) entity that is associated with the radio bearer, and performing retransmission of a specific RLC Service Data Unit (SDU) in case that at least one byte of the specific RLC SDU has been transmitted and remaining time of a Packet Data Convergence Protocol (PDCP) SDU associated the specific RLC SDU becomes less than the remaining time threshold.

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 radio link control (RLC) method. On the basis of latency budget information and / or feature information of a service data unit (SDU), an RLC entity at a sending side in an RLC acknowledged mode (AM) adjusts a polling cycle, wherein the adjustment of the polling cycle is realized by starting a polling retransmission timer and setting a timeout value of the polling retransmission timer, or starting a polling acceleration timer and setting a timeout value of the polling acceleration timer; on the basis of the received latency budget information of the SDU, the RLC entity at the sending side in the RLC AM terminates transmission or terminates retransmission of the SDU or segments of the SDU; and on the basis of a deadline of a PDU set associated with the SDU, an RLC entity at a receiving side in the RLC AM determines at least one status report occasion, or terminates a request to retransmit the SDU or the segments of the 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.

This communication device of a cellular communication system transmits, to another communication device, a Radio Link Control (RLC) Protocol Data Unit (PDU) which includes a Packet Data Convergence Protocol (PDCP) Service Data Unit (SDU). After the RLC PDU is transmitted, the communication device performs control so as to use a first setting value for increasing the transmission frequency of a STATUS PDU on the basis of the fact that the remaining time of a PDCP discard Timer activated for the PDCP SDU included in the RLC PDU falls below a prescribed threshold, and so as to use a second setting value at which the transmission frequency of the STATUS PDU becomes lower than the first setting value on the basis of the fact that the remaining time exceeds the prescribed threshold.

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 application discloses a data processing method, a base station, a terminal and a storage medium. The data processing method comprises the following steps: acquiring a transmission control protocol (TCP) message, backing up a packet data convergence protocol (PDCP) service data unit (SDU) corresponding to the TCP message, generating and saving a sequence number code corresponding to the PDCP SDU; sending the TCP message to a data receiving end; when an acknowledgement (ACK) message carrying an acknowledgement sequence number is received according to the TCP message sent by the data receiving end, determining a sequence number code meeting an acknowledgement condition from the saved sequence number codes according to the acknowledgement sequence number in the ACK message; and deleting the PDCP SDU corresponding to the sequence number code meeting the acknowledgement condition. According to the scheme provided by the embodiment of the application, the sequence number code determined according to the ACK message acknowledgement sequence number is the maximum confirmable sequence number code, the PDCP SDU corresponding to the sequence number code smaller than or equal to the maximum confirmable sequence number code is deleted, the backup file of the PDCP SDU can be deleted more timely, and thus the message quantity of PDCP retransmission is reduced.

A base station device including: a transmitter configured to transmit, for each logical channel, first data of a first type and second data of a second type; and processor circuitry configured to: omit information about a data length of the second data in a MAC protocol data unit (PDU), place a medium access control (MAC) header in front of a MAC service data unit (MSDU) of the second data, and multiplex the first data and the second data, wherein the data length of the second data is omitted from the MAC header and an R bit (reserved bit) is set in the first bit of the first octet in the MAC header.

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.