A detection and reporting method, system and receiving end of PDU

Abstract

The invention discloses a method which is used for checking and reporting a protocol data unit in the control of wireless link. The receiving terminal checks whether a PDU losses packages by applying an HARQ flutter timer. When the PDU losses packages, and a timer with one period is adopted, the report of losing packages state is sent to the sending terminal. The invention also discloses a check and report system and a receiving terminal of the protocol data unit that is lost in the control of wireless link. The invention can start one HARQ flutter timer to a plurality of receiver sequence gaps when loss lists are checked. Or else the invention sends loss state report by a period timer until the loss list is empty. By applying the invention, the cost of the timer in the system can be reduced, meanwhile, times of sending loss state report can be reduced, thus lowering the occupancy factor of wireless resource used by loss state report, and the effective thuoughput of the system is correspondingly improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, system and receiving end for detecting and reporting protocol data units in wireless link control. Background technique [0002] The RLC (Radio Link Control) layer is located above the MAC (Media Access Control) layer and provides segmentation and retransmission services for user and control data. The RLC entity is divided into three modes according to the business type: TM (transparent mode), UM (unacknowledged mode), and AM (acknowledged mode). For AM, the RLC entity is bidirectional, that is, this entity is divided into a receiving side and a transmitting side to complete the function of sending and receiving data, and they can communicate with each other. In the AM mode of the RLC layer, after the receiving end detects a lost PDU (Protocol Data Unit), it triggers the ARQ (Automatic Repeat Request) mechanism of the sending end to perform error detecti...

AI Technical Summary

Problems solved by technology

[0016] In view of this, the purpose of the present invention is to provide a method for detecting and reporting lost protocol data units in radio link control, so as to solve the problem of maintaining multiple HARQ jitter timers and periodic timing in the process of detecting and reporting in the prior art. device, resulting in increased system overhead and higher resource occupancy

[0017] Another object of the present invention is to provide a system for detecting and reporting lost protocol data units in radio link control, so as to solve the problem that multiple periodic timers need to be maintained in the existing detection and reporting process, which leads to an increase in the occupancy rate of system resources question

[0018] Another object of the present invention is to provide the detection and reporting receiving end of the lost protocol data unit in the radio link control, so as to solve the problem that the receiving end needs to maintain multiple periodic timers in the prior art

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