H04L69/322

Sequence number checksum for link state protocols

In general, various aspects of the techniques described in this disclosure provide a sequence number checksum for link state protocols. In one example, the disclosure describes an apparatus, such as a network device, having a control unit operative to obtain link state information describing links between pairs of the network devices in a network topology, the link state information being fragmented into a plurality of link state protocol (LSP) fragments; compute a sequence number checksum from sequence numbers of the link state protocol (LSP) fragments; receive an LSP data unit from another network device in the network; determine whether a sequence number checksum in the LSP data unit matches a sequence number checksum computed from the link state information; and configure a delay for processing the LSP data unit in response to determining a mismatch between the sequence number checksum of the LSP data unit and the sequence number checksum computed from the link state information.

METHOD AND APPARATUS FOR FLUSHING HARQ BUFFER IN WIRELESS COMMUNICATION SYSTEM
20220131651 · 2022-04-28 ·

A method and apparatus for flushing a hybrid automatic repeat request (HARQ) buffer in a wireless communication system is provided. A user equipment (UE) receives information on multiple resource pools from a network, selects a first resource pool among the multiple resource pools, and stores a media access control (MAC) protocol data unit (PDU) in the HARQ buffer for transmission via the first resource pool. When the UE reselects a second resource pool among the multiple resource pools, the UE flushes the HARQ buffer.

METHOD AND APPARATUS FOR FLUSHING HARQ BUFFER IN WIRELESS COMMUNICATION SYSTEM
20220131651 · 2022-04-28 ·

A method and apparatus for flushing a hybrid automatic repeat request (HARQ) buffer in a wireless communication system is provided. A user equipment (UE) receives information on multiple resource pools from a network, selects a first resource pool among the multiple resource pools, and stores a media access control (MAC) protocol data unit (PDU) in the HARQ buffer for transmission via the first resource pool. When the UE reselects a second resource pool among the multiple resource pools, the UE flushes the HARQ buffer.

COMMUNICATION APPARATUS, INFORMATION PROCESSING APPARATUS, CONTROL METHOD, AND MEDIUM
20220123900 · 2022-04-21 ·

A communication apparatus communicates an Extremely High Throughput (EHT) Multi-User (MU) Physical Layer Protocol Data Unit (PPDU) including an Extremely High Throughput-Signal-B (EHT-SIG-B) including a resource unit (RU) allocation subfield including N×8 bits, where N=8 holds in a case where the communication apparatus uses a bandwidth of 320 MHz as a bandwidth.

COMMUNICATION APPARATUS, INFORMATION PROCESSING APPARATUS, CONTROL METHOD, AND MEDIUM
20220123900 · 2022-04-21 ·

A communication apparatus communicates an Extremely High Throughput (EHT) Multi-User (MU) Physical Layer Protocol Data Unit (PPDU) including an Extremely High Throughput-Signal-B (EHT-SIG-B) including a resource unit (RU) allocation subfield including N×8 bits, where N=8 holds in a case where the communication apparatus uses a bandwidth of 320 MHz as a bandwidth.

SIDELINK SECURITY CONFIGURATION PROCEDURE

A user equipment (UE) that performs unicast sidelink communication with the second UE and methods therefor are disclosed. A method of a first UE that performs direct sidelink communication with a second UE includes the steps of: receiving a first indication comprising sidelink signalling; in response to receiving the first indication, performing at least one of: updating a configuration for performing a transmission/reception procedure of the first UE in order to update a key based on the updated configuration for performing a transmission/reception procedure; suspending at least one data transmission/reception procedure; and resuming at least one data transmission/reception procedure.

SIDELINK SECURITY CONFIGURATION PROCEDURE

A user equipment (UE) that performs unicast sidelink communication with the second UE and methods therefor are disclosed. A method of a first UE that performs direct sidelink communication with a second UE includes the steps of: receiving a first indication comprising sidelink signalling; in response to receiving the first indication, performing at least one of: updating a configuration for performing a transmission/reception procedure of the first UE in order to update a key based on the updated configuration for performing a transmission/reception procedure; suspending at least one data transmission/reception procedure; and resuming at least one data transmission/reception procedure.

Transmitting and receiving a PDCP layer status report in a mobile telecommunications system

A PDCP status report can be transmitted with reduced radio resources by transmitting the reception success or failure of a series of PDCP service data units (SDUs) in the form of a bitmap when configuring the PDCP status report. A PDCP control packet data unit (PDU) is generated to communicate a status report to a transmitting node for one or more PDCP SDUs transmitted from the transmitting node. The PDCP control PDU includes a data/control (D/C) bit field to indicate the PDCP control PDU is a control PDU, a control PDU type field to indicate a type of corresponding control information, a sequence number field to indicate a first missing PDCP SDU, and a bitmap field for a variable length bitmap. A bit in the variable length bitmap indicates whether a corresponding one of the one or more PDCP SDUs has been successfully been received.

Random access response method and device, base station and user equipment

A random access response method, a random access response device, a base station and UE are provided. The method includes: transmitting a random access response message to UE, where a medium access control protocol data unit (MAC PDU) of the random access response message includes at least one medium access control sub-protocol data unit (MAC subPDU), each MAC subPDU includes an MAC subheader and possibly a medium access control random access response (MAC RAR) corresponding to the MAC subheader; in case that there are at least two MAC subPDUs, the at least two MAC subPDUs are sequentially arranged in the MAC PDU.

Random access response method and device, base station and user equipment

A random access response method, a random access response device, a base station and UE are provided. The method includes: transmitting a random access response message to UE, where a medium access control protocol data unit (MAC PDU) of the random access response message includes at least one medium access control sub-protocol data unit (MAC subPDU), each MAC subPDU includes an MAC subheader and possibly a medium access control random access response (MAC RAR) corresponding to the MAC subheader; in case that there are at least two MAC subPDUs, the at least two MAC subPDUs are sequentially arranged in the MAC PDU.