161 results about "PDCP" patented technology

A device may determine conditional availability of data for transmission. A device (e.g., in medium access control (MAC), radio link control (RLC), and / or packet data convergence protocol (PDCP) may determine a second amount of data is available for conditional transmission (e.g., for a scheduling request (SR), buffer status report (BSR), and / or multiplexing in a transport block (TB)) as a function of, e.g., the transmission status of a first amount of data multiplexed in a TB, available for transmission, discarded, and / or transmitted. In examples, a device may receive an indication of first data, receive an indication of second data, determine that a dependency exists between the first and second data, determine the second data is unavailable for transmission, determine condition(s), determine an amount of the second data is available for transmission based on satisfaction of the condition(s), and perform transmission processing or transmission of the amount of the second data.

The disclosure relates to a communication technique for fusing a 5G communication system with IoT technology to support higher data rate after the 4G system and a system thereof. The disclosure may be applied to an intelligent service (e.g., smart home, smart building, smart city, smart or connected car, healthcare, digital education, retail, security and safety related services, etc.) based on 5G communication technology and IoT-related technology. The disclosure discloses a method for allowing a UE to normally receive a MBS service in various scenarios.

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.

User equipment includes a transceiver configured to transmit and receive signals over an air interface, a memory configured to store executable instructions, a processor configured to execute instructions stored in the memory. The processor executes the instructions to measure characteristics of uplink channels of the air interface at a first physical (PHY) layer and a second PHY layer. The processor also executes instructions to selectively route data from a packet data convergence protocol (PDCP) layer to one or more of a first radio link control (RLC) layer associated with the first PHY layer and a second RLC layer associated with the second PHY layer based upon the characteristics of the uplink channels.

Embodiments of the present disclosure provide a data discarding method, a communication device, a communication system, a storage medium, and a program product. The method is executed by a terminal, and the method comprises: discarding a first data packet among at least one packet data convergence protocol (PDCP) data packet, wherein the first data packet is a PDCP data packet that can be first discarded among the at least one PDCP data packet. In the technical solution provided by the embodiments of the present disclosure, a terminal discards a first data packet that can be first discarded among at least one PDCP data packet, thereby reducing the number of PDCP data packets to be processed or transmitted, thus effectively alleviating buffer overflow of the terminal, and also ensuring timely processing and transmission of PDCP data packets among the at least one PDCP data packet other than the first data packet.

A method and an apparatus for supporting MBS in a wireless communication system are provided. A method performed by a user equipment (UE) in a wireless communication system includes: receiving configuration information for a multicast broadcast service (MBS) via a radio resource control (RRC) release message; entering an RRC inactive state based on the received RRC release message; and receiving the MBS in an RRC inactive state based on the configuration information for the MBS, where the MBS is received via a multicast bearer for the MBS, and where the MBS is received via a multicast bearer for the MBS. At least one of a Packet Data Convergence Protocol (PDCP) entity, a Radio Link Control (RLC) entity, a Medium Access Control (MAC) entity, a Physical Layer entity and a Service Data Adaptation Protocol (SDAP) entity is configured for a multicast bearer of the MBS.

The present disclosure provides a method and device for activating sidelink PDCP multiplexing, which can be applied to mobile communication technology. The method comprises: receiving first indication information sent by a network device; and activating or deactivating sidelink PDCP multiplexing of a SLRB according to the first indication information. The method can realize the activation or deactivation of sidelink PDCP multiplexing.

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 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.

Embodiments of the present application provide a unicast multicast conversion method and apparatus, and a processor-readable storage medium, wherein the unicast multicast conversion method comprises: receiving a Radio Resource Control (RRC) reconfiguration message sent by a first network node, when Multimedia Broadcast Multicast Service (MBMS) service data packets sent by the first network node are received through a multicast bearer and a User Equipment (UE) is in a connected state; reconstructing an MBMS Packet Data Convergence Protocol (MBMS PDCP) entity according to the RRC reconfiguration message; sending a reconfiguration completion message to the first network node so that the first network node converts the multicast bearer to a unicast bearer and sends the MBMS service data packets to the UE through the unicast bearer, the reconfiguration completion message being configured to characterize that reconstruction of the MBMS PDCP entity is accomplished by the UE; and receiving the MBMS service data packets sent by the first network node through the unicast bearer. The method realizes the conversion of the UE from receiving the MBMS service data packets through the multicast bearer to receiving the MBMS service data packets through the unicast bearer, thereby ensuring that no data packets are lost.

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.

In one embodiment, a method is disclosed, comprising: receiving a packet; processing the packet in a Control Unit–User Plane (CU-UP) as a user-space application with kernel-bypass networking; performing packet Input / Output (I / O) by the CU-UP user-space application, wherein the CU-UP performs Internet Protocol (IP) validation on received user-plane packets before processing Packet Data Convergence Protocol (PDCP), Service Data Adaptation Protocol (SDAP) and General Packet Radio Service Tunnelling Protocol (GTPU) protocol stack and performing direct I / O to a Network Interface Controller (NIC) for sending the packet over a network to a Distributed Unit (DU). The method may further comprise using a containerized CU-UP. The method may further comprise using a plurality of worker threads. The method may further comprise using a polling user space networking accelerator framework.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, at a packet data convergence protocol (PDCP) layer, a packet having a PDCP sequence number. The UE may determine whether the received packet, having the PDCP sequence number, satisfies one or more reordering criteria and whether a validation check is failed. The UE may discard, before an expiration of a reordering timer, the received packet based at least in part on the determination of whether the received packet satisfies the one or more reordering criteria and whether the validation check is failed. Numerous other aspects are provided.

The embodiment of the present application provides a data processing method, an RLC state report triggering and receiving method. The method comprises the following steps: in the case that the RLC sequence number is associated with a packet data convergence protocol (PDCP) sequence number, initializing and setting a variable of an RLC layer sending end according to a variable of a PDCP sending end. Through the embodiment of the present application, the problem that the existing RLC variable initialization method in the related art can cause discontinuous data transmission or low data transmission efficiency is solved, and the effect of improving data transmission efficiency is achieved.

Apparatus and methods for multicast service continuity for radio resource control (RRC) user equipment apparatuses (UEs) in mobility are disclosed. In an aspect, a UE receives, from a first network node of a first cell, a multicast service while operating in an RRC inactive state or an RRC idle state in the first cell. The UE further receives an indication of a packet data convergence protocol (PDCP) counter synchronization across multiple network nodes for the multicast service, where the multiple network nodes include the first network node. The UE further selects a second cell for camping. The UE further continues to receive, based on a PDCP variable continuity, the multicast service in the second cell from a second network node of the second cell, where the multiple network nodes include the second network node, and where the PDCP variable continuity is responsive to the indication of the PDCP counter synchronization.

This disclosure proposes a communication method, communication device, communication system, and storage medium. The method includes: sending a PDCP protocol data unit (PDU) using a first packet data fusion protocol (PDCP) entity of the first device. The PDCP PDU is used to indicate at least one of the following: the relevant configuration of a first function of the first PDCP entity, and the relevant configuration of a first field in the PDCP packet header corresponding to the first PDCP entity. The method of this disclosure ensures communication performance and communication efficiency.

A data transmission method, an apparatus, and a system. The method includes: a source network device performs cascading processing on at least two data units to obtain a first data packet, where data included in the at least two data units belongs to a same radio bearer or quality of service flow of a terminal device, and the first data packet is a packet data convergence protocol (PDCP) layer data packet or a service data adaptation protocol (SDAP) layer data packet; and sends the first data packet to a target network device through a first tunnel. According to the foregoing method, a plurality of data units is cascaded to obtain one data packet, so that header overheads of the cascaded data packet can be reduced, lossless handover under a cascading function can be implemented, and a cascading gain can be obtained.

Aspects presented herein may improve latency and power consumption of communications by enabling a wireless device to apply external coding (OC) (using forward error correction (FEC)) to a transmission. In one aspect, a wireless device segments each packet data convergence protocol (PDCP) packet of a plurality of PDCP packets into a set of OC symbols, where the plurality of PDCP packets correspond to a packet data unit (PDU) set. The wireless device assembles a plurality of sets of OC symbols into an OC block. The wireless device applies FEC coding to the OC block. The wireless device outputs the OC block based on the FEC encoding. In some examples, the wireless device also adds an OC header to the OC block, where the OC header includes a symbol size, a set of source symbols, and / or a symbol index associated with FEC coding.

The invention provides a method executed by user equipment (UE) and the UE. The method executed by the UE comprises the following steps: a PDCP entity receives a request for reconstructing a packet data convergence protocol PDCP from an upper layer; and if the PDCP entity receiving the request is a transmit PDCP entity, transmitting the request to the PDCP entity, the UE determines whether a radio bearer (RB) to which the PDCP entity belongs is a multi-mode data radio bearer (DRB) or a multi-mode radio bearer associated with at least one radio link control (UM) RLC entity in an unacknowledged mode, or a multi-mode radio bearer associated with at least one acknowledgement mode radio link control (AM) RLC entity, the multi-mode DRB being a DRB associated with at least one UM RLC entity and at least one AM RLC entity.

The invention relates to the technical field of mobile communication network performance test and fault location, in particular to a base station air interface service plane time delay rapid measurement method and device and a storage medium, and user equipment (UE) initiates an ICMP echo request message to a service website or a specified service server after accessing a 5G network. A base station identifies an ICMP echo request message from test UE in an uplink service plane data processing process, intercepts the message after the message is processed by PHY, MAC, RLC, PDCP and SDAP layers of the base station, and prevents the message from being forwarded to a core network; and the base station constructs a corresponding ICMP echo response message according to the intercepted ICMP echo request message and issues the ICMP echo response message to the UE. Compared with the prior art, the ICMP time delay result displayed by the method is the air interface service surface time delay, the air interface time delay can be quickly and intuitively obtained, the operation process is remarkably simplified, and the positioning efficiency is improved.

A method for sending configuration information includes: sending configuration information to a user equipment (UE). The configuration information comprises N types of radio link control (RLC) entities corresponding to a packet data convergence protocol (PDCP) entity of the UE.

The embodiment of the invention provides a copy transmission method, which is applied to a first device, one or more links exist between the first device and a second device, and one or more relay terminal devices exist on each link, and comprises the following steps: acquiring first information, the first information is used for determining whether to activate a packet data convergence protocol PDCP replication transmission mechanism of the first device, and the PDCP replication transmission mechanism is used for the first device to send the first data to the second device. According to the method, under the condition that each link between the first equipment and the second equipment is a non-direct link, activation control of a PDCP replication transmission mechanism of the first equipment can be realized.

The application discloses a PDCP data retransmission method and device, a terminal and a medium. The method comprises the following steps: in response to the fact that an NR-DC data transmission system meets a first preset condition or the fact that the NR-DC data transmission system meets a second preset condition, a master cell group release instruction is acquired; based on the master cell group release instruction, a to-be-retransmitted PDU list is acquired and the to-be-retransmitted PDU list is synchronized; the to-be-retransmitted PDU list is traversed, to-be-retransmitted PDU parameters and master cell group delivered data parameters are acquired, and based on the to-be-retransmitted PDU parameters, the master cell group delivered data parameters and reordering window size data corresponding to a user equipment, the to-be-retransmitted PDU is processed, so as to realize PDCP data retransmission or abandonment. The application aims to realize PDCP data retransmission in an NR-DC scene, reduce unnecessary data retransmission and avoid the problem that service interruption occurs at a receiving end due to out-of-window data.

The present disclosure describes methods, systems, and devices for notifying at least one downstream device of a migrating integrated access backhaul node (IAB node) of an inter-donor migration status of the migrating IAB node experiencing a migration from a source IAB donor to a target IAB donor. The method includes receiving, by a receiving device, a radio resource control (RRC) message transmitted from an IAB donor. The RRC message includes an information element indicating the inter-donor migration status of the migrating IAB node. The method further includes transmitting, by the receiving device, a packet data convergence protocol (PDCP) status report to the target IAB donor in response to the information element indicating a successful inter-donor migration. The PDCP status report corresponds to a radio link control-acknowledged mode (RLC-AM) bearer configured to be allowed to transmit the PDCP status report in uplink and configured to update data transmission of the receiving device.

A device may determine conditional availability of data for transmission. A device (e.g., in medium access control (MAC), radio link control (RLC), and / or packet data convergence protocol (PDCP)) may determine a second amount of data is available for conditional transmission (e.g., for a scheduling request (SR), buffer status report (BSR), and / or multiplexing in a transport block (TB)) as a function of, e.g., the transmission status of a first amount of data multiplexed in a TB, available for transmission, discarded, and / or transmitted. In examples, a device may receive an indication of first data, receive an indication of second data, determine that a dependency exists between the first and second data, determine the second data is unavailable for transmission, determine condition(s), determine an amount of the second data is available for transmission based on satisfaction of the condition(s), and perform transmission processing or transmission of the amount of the second data.

Various solutions for processing Packet Data Convergence Protocol (PDCP) packets with respect to an apparatus in mobile communications are described. The apparatus may determine that a difference between a first current time and a first timestamp of a first bin is greater than a threshold. The first bin may be associated with a first set of PDCP Packet Data Units (PDUs). The apparatus may forward one or more first received PDCP PDUs of the first set of PDCP PDUs to an upper layer. The apparatus may drop one or more first unreceived PDCP PDUs of the first set of PDCP PDUs in an event that the one or more first unreceived PDCP PDUs are identified as missing.

The invention provides a communication method and device, electronic equipment, a chip and a storage medium, and the method comprises the steps: determining a first data packet of a current communication service as a repeated data packet, the first data packet being a data packet received through a first wireless bearer after reconstruction; and according to a first parameter, determining whether to discard the first data packet, the first parameter being obtained from a packet data convergence protocol PDCP layer of the terminal. The problem that the context of the compressor cannot be initialized to cause silent conversation or hang-up or data cutoff for a long time can be avoided.

Various solutions for adaptive logical channel prioritization (LCP) in mobile communications are described. An apparatus may select a plurality of logical channels, each configured with a priority, for an uplink (UL) grant, and apply an additional priority for at least one of the logical channels in an event that the at least one of the logical channels carries data with a remaining time of an associated packet data convergence protocol (PDCP) discard timer less than a threshold. Then, the apparatus may allocate resources of the UL grant to one or more of the logical channels, each associated with a positive number of tokens, in a decreasing priority order determined based on the additional priority being applied. The apparatus may further perform a new transmission based on the allocation of the resources of the UL grant.

The present disclosure describes methods, system, and devices for receiving multicast and broadcast service (MBS) data by a group of second ends from a first end. One method includes receiving, by a second packet data convergence protocol (PDCP) entity at a second end, the MBS data from a first PDCP entity at the first end. Another method includes receiving, by a second acknowledge mode (AM) point-to-multipoint (PTM) radio link control (RLC) entity at a second end, the MBS data from a first AM PTM RLC entity at the first end. Another method includes receiving, by a second end, a piece of information sent from the first end, wherein the piece of information comprises at least one of the following: a first service identity indicating a MBS service or session in RAN, an indication on whether hybrid automatic repeat request (HARQ) feedback is enabled or disabled.