568 results about "Radio Link Control" patented technology

This application provides a communication method and a communication apparatus. The method includes: A first network unit sends first information to a second network unit, where the first information includes first indication information, and the first indication information indicates a configuration type of a first radio bearer of a remote terminal device. In this way, the second network unit may determine, based on the configuration type of the first radio bearer, whether to provide a configuration of a first radio link control (RLC) bearer corresponding to the first radio bearer on a link between the remote terminal device and the second network unit, to provide correct configuration information of the radio bearer for the remote terminal device. This helps improve data transmission efficiency of the radio bearer, improve radio resource utilization of a mobile network system, and improve system performance.

A method performed by an integrated access backhaul (IAB) node in a wireless communication system is provided. The method comprises: receiving, from a base station, configuration information regarding an uplink (UL) grant, receiving, from the base station, configuration information regarding backhaul (BH) radio link control (RLC) channel via higher layer signaling, identifying, based on the configuration information regarding BH RLC channel, whether an extended logical channel identifier (eLCID) is used, in case that the eLCID is not used and a UL grant size is equal to or larger than a first size, not transmitting only a padding buffer status report (BSR) or not transmitting only padding or not transmitting only the padding BSR and the padding, and in case that the eLCID is used and the UL grant size is equal to or larger than a second size, not transmitting only the padding BSR or not transmitting only the padding or not transmitting only the padding BSR and the padding.

A method performed by an integrated access backhaul (IAB) node in a wireless communication system is provided. The method comprises: receiving, from a base station, configuration information regarding an uplink (UL) grant, receiving, from the base station, configuration information regarding backhaul (BH) radio link control (RLC) channel via higher layer signaling, identifying, based on the configuration information regarding BH RLC channel, whether an extended logical channel identifier (eLCID) is used, in case that the eLCID is not used and a UL grant size is equal to or larger than a first size, not transmitting only a padding buffer status report (BSR) or not transmitting only padding or not transmitting only the padding BSR and the padding, and in case that the eLCID is used and the UL grant size is equal to or larger than a second size, not transmitting only the padding BSR or not transmitting only the padding or not transmitting only the padding BSR and the padding.

A terminal apparatus for communicating with a base station apparatus is provided. The terminal apparatus includes a receiver configured to receive a Radio Resource Control (RRC) reconfiguration message including a parameter related to a first configuration from the base station apparatus, and a processing unit configured to perform configuration in accordance with the RRC reconfiguration message received. In a case that a first timer of an RRC protocol expires, a radio link failure of a source primary cell is not detected, and configuration related to Dual Active Protocol Stack (DAPS) handover is performed for the terminal apparatus, the processing unit reconfigures all of state variables configured for a Radio Link Control (RLC) entity of a Signaling Radio Bearer (SRB) in the source primary cell to respective initial values, resumes the SRB suspended in the source primary cell, and transmits an RRC message for notifying the base station apparatus that the DAPS handover has failed.

Methods, systems, and devices for wireless communications are described. A network may configure one or more devices with a timer. The timer may define a threshold amount of time a receiver in a radio link control (RLC) acknowledgement mode (AM) is to wait for and continue to request retransmission of a missing RLC packet data unit (PDU) through automatic repeat request (ARQ) mechanisms. The receiver may detect a missing PDU, and may initiate two timers: a first timer defining how long the receiver is to request and monitor for the missing first PDU, and a second timer defining an amount of time before requesting retransmission of the first PDU. Upon expiration of the second timer, the receiver may transmit a request for retransmission of the first PDU. Upon expiration of the first timer, the receiver may forward all other sequentially received PDUs to higher layers for decoding.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The disclosure relates to a method and transmitting device (101) for handling enhanced RLC transmit operation for XR. The method includes receiving the discard indication at RLC layer from upper layer to discard at least one RLC SDU associated with the SN. Further, the method includes abandoning or stopping the transmission or retransmission of at least one RLC SDU, segment of the RLC SDU, and RLC data PDU, when the discard indication is received for the at least one corresponding RLC SDU from the upper layer.

Provided herein are a method performed when deactivating a packet duplication and returning to a split bearer operation and an apparatus therefor. The method comprises receiving a radio resource control (RRC) message including information related to a secondary radio link control (RLC) entity for returning to the split bearer operation among more than two RLC entities associated with a packet data convergence protocol (PDCP) entity, wherein the secondary RLC entity belongs to a cell group different from a cell group of a primary RLC entity, and performing the split bearer operation using the primary RLC entity and the secondary RLC entity in case that the packet duplication is deactivated.

The invention discloses access network equipment and a communication method, relates to the technical field of communication, and can reduce the flow of a forward transmission interface and improve the communication performance. The access network equipment comprises a first network element and a second network element in communication connection with the first network element, wherein the first network element comprises a wireless resource control function, a packet data convergence layer protocol function, a non-real-time part of a wireless link control function and a non-real-time part of a media access control function; the second network element includes a non-real-time portion of the physical layer functionality and a real-time portion of the physical layer functionality.

A method performed by a centralized-radio access network (C-RAN) hub device in a wireless communication system is provided. The method includes transmitting a request message for moving a function for a cell of a distributed unit (DU) connected to the C-RAN hub device, based on the request message reallocating at least one of a packet distributing pod (PDP) function of the DU for a radio link control (RLC) layer or a baseband processing pod (BPP) function for a medium access control (MAC) layer, and based on the reallocation, performing at least one of the PDP function of the DU and the BPP function of the DU.

Systems and methods for signaling for extended Reality (XR) awareness are provided. In some embodiments, a method performed by a Centralized Unit (CU) of a base station includes: providing information to a Distributed Unit (DU) of the base station to indicate which groups of Radio Link Control (RLC) Service Data Units (SDUs) belong to a unique Application Data Unit (ADU) which needs to be delivered within the same time budget; and adding ADU related information on each Packet Data Convergence Protocol (PDCP) Protocol Data Unit (PDU) to allow RLC entity to be aware which RLC SDU belongs to which ADU. In this way, a RAN can discard a set of packets together which are no longer valid for the application. This results in network resources not being wasted and better management of the network capacity. This allows the network to more efficiently manage the resources and its scheduler.

This disclosure describes systems, methods, and devices for gap management for packet data convergence protocol and radio link control count. A device may encode a first subset of packets; encode a second subset of packets based on the first subset; allocate a count for the first subset and the second subset; detect that the second subset is not to be transmitted by the device or decoded by a second device; encode, based on detecting that the first subset is not to be transmitted by the device or decoded by the second device, an indication to be transmitted to the second device to instruct the second device to skip a gap in the count based on the second subset.

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.

Systems, methods, and instrumentalities are disclosed herein for an uplink enhancement procedure. A device, such as a wireless transmit / receive unit (WTRU) may receive configuration information from a network. The configuration information may indicate a condition to trigger an uplink enhancement. In some examples, the uplink enhancement may be associated with a radio link control (RLC) enhancement. In some examples, the uplink enhancement may be associated with (e.g., may be further associated with) a medium access control (MAC) enhancement. The device may receive a data set associated with an uplink transmission. The device may determine whether to perform the uplink enhancement based on the configuration information. Based on a determination to perform the uplink enhancement, the device may perform the uplink transmission using the uplink enhancement.

The present application relates to devices and components including apparatuses, systems, and methods for congestion signaling over a radio link control layer in a wireless network.

A method may include receiving, by a base station distributed unit from a wireless device not in a radio resource control (RRC) connected state an RRC request message for a small data transmission (SDT) procedure and uplink data associated with the SDT procedure. The method may also include sending, to a base station central unit, the RRC request message for the SDT procedure. The method may further include receiving, from the base station central unit, a message that includes radio link control (RLC) configuration parameters for the SDT procedure and a field indicating that the RLC configuration parameters are for the SDT procedure. The method may additionally include sending the uplink data to the base station central unit in accordance with the field.

The invention provides a communication method and device. The method comprises: a first terminal device obtaining a first configuration from a network device, the first configuration comprising a first radio link control bearer configuration, the first radio link control bearer configuration having an association relationship with a first carrier, the first radio link control bearer configuration is one of a plurality of radio link control bearer configurations corresponding to packet data convergence layer protocol entity configuration, and the first carrier is a carrier corresponding to a terminal device performing single carrier communication; and multicasting or broadcasting data corresponding to the first radio link control bearer entity established by the first radio link control bearer configuration on the first carrier. In the embodiment of the invention, the first terminal equipment can control the bearer entity through the first wireless link and use the first carrier to multicast or broadcast data to the receiving terminal equipment which does not support sidelink carrier aggregation according to the incidence relation between the bearer configuration and the first carrier according to the first wireless link, so that the sidelink communication quality is improved.

A system, method and apparatus for wireless communications is provided. A user equipment (UE) receives control information including first configuration parameters and second configuration parameters. The UE receives a packet associated with the MBS radio bearer and determines a decoding result associated with the decoding the received packet. The UE processes a decoding result according to an acknowledgement mode.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, configuration information indicating that network coding is enabled for initial transmissions associated with a multicast / broadcast service (MBS) and indicating that network coding is enabled for retransmissions associated with the MBS. The UE may receive, via a multicast traffic channel or a dedicated traffic channel, an initial transmission associated with the MBS, wherein the initial transmission is associated with a first set of encoded packets. The UE may transmit a radio link control (RLC) status feedback message associated with the initial transmission. The UE may receive, via the multicast traffic channel or the dedicated traffic channel, a retransmission associated with the initial transmission, wherein the retransmission is associated with a second set of encoded packets. Numerous other aspects are described.

The disclosure relates to a fifth generation (5G) or sixth generation (6G) communication system for supporting a higher data transmission rate. A method of a terminal connected to a first node and a second node in a dual connectivity environment is provided. The method includes performing a radio link failure (RLF) prediction of the second node, transmitting, to at least one of the first node or the second node, a failure prediction report based on the RLF prediction, and performing, by a packet data convergence protocol (PDCP) entity based on the RLF prediction, PDCP pre-recovery including at least one of stopping uplink PDCP packet data unit (PDU) splitting to a radio link control (RLC) entity related to the second node for a split bearer, or retransmitting unacknowledged uplink PDCP data PDU previously submitted to an acknowledged mode (AM) RLC entity related to the second node for which successful delivery has not been confirmed by the AM RLC entity.

A method for managing data transmission in a communication network operating in a radio link control (RLC) acknowledge mode (RLC AM), the network comprising a transmitter and a receiver, the method at the transmitter comprising: stopping retransmission of a protocol data unit, PDU, to the receiver in dependence on a number of retransmissions of the PDU exceeding a predetermined discard threshold value, wherein the predetermined discard threshold value is less than a threshold value associated with a radio link failure (RLF) of the network. The retransmission of the PDU may be stopped if a discard timer associated with the PDU exceeds a discard timer threshold value. The PDU may be associated with a PDU Set, and the discard timer is started when a first PDU of the PDU Set is received by the transmitter. The method may comprise, upon determining that retransmission of the PDU is stopped, transmitting a discard notification to the receiver. The method may comprise, upon determining that retransmission of the PDU is stopped, transmitting a PDU of a subsequent PDU Set.

A method performed by a mobile terminal configured to communicate with a satellite having at least a part of functions of a base station is disclosed. The method includes receiving, from the satellite, information for switching a serving satellite from the satellite to another satellite; performing the switching the serving satellite based on the information, and wherein the performing the switching includes: synchronizing with a target cell which is different from a serving cell served by the satellite; resetting configuration related to a Medium Access Control (MAC) layer; and re-establishing configuration related to a Radio Link Control (RLC) layer and a Packet Data Convergence Protocol (PDCP) entity for at least one Radio Bearer (RB).

The present disclosure relates to a method performed by a communication apparatus. The method comprising: transmitting a Radio Link Control (RLC) Service Data Unit (SDU) corresponding to a Protocol Data Unit (PDU) or a PDU set; starting a discard timer; performing at least one automatic repeat request (ARQ) retransmission of the RLC SDU in a case where the communication apparatus receives information indicating a specific RLC SDU is not received successfully and the discard timer is running; and stopping the at least one ARQ retransmission in a case where at least one of: the discard timer has been expired, a discard indication for the specific RLC SDU has been obtained from a Packet Data Convergence Protocol (PDCP) layer, or a number of the at least one ARQ retransmission has reached to a specific number.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a network node, a first feedback signal via a physical (PHY) layer indication. The UE may transmit, to the network node, a second feedback signal via the PHY layer indication or via a medium access control (MAC) control element (CE) (MAC-CE) indication, wherein the second feedback signal is associated with radio link control (RLC) packet loss. Numerous other aspects are described.

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.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a configuration message indicating a threshold time duration event associated with transmission of a polling message for requesting a status protocol data unit (PDU). The threshold time duration event may correspond to a time period following transmission of a data message without reception of the status PDU. The UE may transmit a first data message. After a time duration has elapsed since transmission of the first data message without reception of a first status PDU, the UE may transmit a first polling message that requests the first status PDU. The first status PDU may include feedback for the first data message. The UE may transmit the first polling message based on the time duration satisfying the threshold time duration event.

Systems, methods, and devices for wireless communications. Configuration information is received, which indicates a configuration for an acknowledged mode (AM) radio link control (RLC) entity. A packet data unit (PDU) set is received, via a packet data convergence protocol (PDCP) entity. The AM RLC entity is configured for retransmission based on at least one condition, wherein the at least one condition includes a PDU set characteristic and / or a PDU set transmission status. The PDU set is transmitted via the AM RLC entity. An RLC status PDU indicating an RLC status is received. One or more PDUs of the PDU set is retransmitted, via the RLC entity, responsive to the RLC status. In some implementations, the PDU set characteristic includes a priority level of the PDU set and / or a type of the PDU set. In some implementations, the PDU set transmission status includes a time-to-live (TTL) threshold.

The invention relates to a non-contact conductivity measuring device which comprises an RLC (Radio Link Control) circuit, a signal generator, an oscilloscope and a calculation module, wherein the RLC circuit is formed by connecting a resistor, a capacitor and an inductor in series; the inductor consists of a solenoid and a conductor rod arranged in the center of the solenoid; the signal generator serves as an input voltage source of the RLC circuit; the oscilloscope is used for monitoring voltage signals at two ends of the capacitor and voltage signals at two ends of the input voltage source; the calculation module is used for obtaining the resonant frequency of the RLC circuit according to the ratio of the voltage signals at the two ends of the capacitor to the voltage signals at the two ends of the input voltage source; and the controller is also used for calculating the conductivity of the to-be-measured conductor rod according to the outer radius of the to-be-measured conductor rod, the outer radius of the solenoid, the length of the solenoid, the number of close winding turns of the solenoid, the capacitance value of the capacitor and the resonance frequency. It can be understood that by means of the technical scheme, the conductivity of the conductor rod can be measured in a non-contact mode, and the testing accuracy is high.

In one aspect, a device for wireless communication is disclosed. The device includes at least one processor and a memory coupled to the at least one processor. The at least one processor is configured to cause the device to: receive reassembly timer configuration information. The at least one processor is also configured to receive one or more radio link control (RLC) segments, each RLC segment associated with a sequence number (SN), wherein the one or more RLC segments are associated with a reassembly timer expiration time based on the reassembly timer configuration information. The at least one processor is further configured to: release, prior to the reassembly timer expiration time, the one or more RLC segments based on an adjusted reassembly timer expiration time. The adjusted reassembly timer expiration time is determined based on an output from a learning model of the device. Other aspects are described and claimed.

The present application relates to devices and components including apparatus, systems, and methods for congestion signaling by a radio link control layer in wireless networks.