Patent · US Active

Data packet retransmission method and apparatus

US11424864B2 · kind B2 · utility

0Cited by

6References

20Claims

0Family size

Assignee

Huawei Technologies Co., Ltd. · CN

Inventors

Xiangzhen Kong · Shanghai, CN
Chao Qin · Beijing, CN
Zhiyong Liu · Singapore, SG

Key dates

Filing date	Dec 18, 2020
Grant date	Aug 23, 2022
Priority date	—
Expiry date	Jan 4, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH04M7/006
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Data packet retransmission by a radio link control (RLC) protocol entity of a transmit end is described herein. The retransmission includes sending a target sequence number and a first data packet to a MAC entity of the transmit end and recording a quantity of times the target sequence number is transmitted to the MAC entity of the transmit end at an RLC layer. In accordance with receiving the target sequence number and a negative acknowledgement that are sent by the MAC entity, obtaining the RLC layer transmission count corresponding to the target sequence number. In accordance with determining the RLC layer transmission count is less than an RLC layer transmission threshold, sending a retransmission instruction based on the first data packet to the MAC entity. In accordance with a retransmission condition at the RLC layer being met, the RLC entity of the transmit end triggers retransmission at the RLC layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.