Serial number indication method and device and serial number determination method and device

Abstract

The invention discloses a serial number indication method and device and a serial number determination method and device. The indication method comprises the steps that a first network device sends first indication information to a first terminal device, wherein the first indication information is used for indicating the first terminal device to report a first serial number in an RLC entity; the first terminal device sends the first serial number in the RLC entity according to the first indication information, wherein the first serial number is used for indicating a starting serial number in the RLC entity of the first network device; and the first network device determines the starting series number in the RLC entity of the first network device according to the first sequence number. The determination method comprises the steps that a network device determines a first data packet; the network device determines an RLC serial number corresponding to the first data packet according to a PDCP serial number corresponding to the first data packet; the network device adds the RLC serial number into an RLC packet header of the first data packet; the network device sends the first data packet; and a terminal device receives the first data packet. By adopting the indication and the determination scheme, the communication reliability is improved.

Description

technical field [0001] The present application relates to the field of communication technology, and in particular to a method and device for indicating and determining a serial number. Background technique [0002] In wireless communication, a radio link control (radio link control, RLC) is located between a medium access control (media access control, MAC) layer and a packet data convergence protocol (packet data convergence protocol, PDCP) layer. like figure 1 The schematic diagram of the protocol stack structure in the uplink transmission (data transmission from the terminal to the next generation nodeB (gNB)) scenario is shown, and the data transmission is carried out in the direction indicated by the arrow. The downlink transmission is sequentially processed through the above protocol stack in the opposite direction to the uplink transmission. Wherein, after passing through each layer, the data will be processed by the corresponding protocol layer, and then the data ...

Images