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Method for reset control of radio link control entity

A technology of wireless link control and reset control, which is applied in wireless communication, error prevention/detection using return channel, network traffic/resource management, etc. It can solve buffer overload, waste of wireless resources, sending and moving receiving window" mechanism Complexity and other issues to achieve the effect of reducing processing overhead, reducing the number, avoiding waste of wireless resources and unfairness

Active Publication Date: 2013-08-21
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] Considering that the SDU Discard technology of the LTE wireless interface in the related art may cause buffer overload, cause waste of wireless resources, and the mechanism of "sending a mobile receiving window" is relatively complicated, the present invention is proposed

Method used

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  • Method for reset control of radio link control entity
  • Method for reset control of radio link control entity
  • Method for reset control of radio link control entity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] First, for AM RLC, the embodiment of the present invention provides a reset control method of a radio link control entity, which is used for reset control of AM RLC.

[0047] Such as Figure 4 As shown, the reset control method of the radio link control entity according to the embodiment of the present invention includes the following processing: (step S402-step S404)

[0048]Step S402: For each PDCP SDU, set a corresponding discard timer (Timer_Discard) at the PDCP layer, and start the discard timer when the PDCP SDU is delivered at a higher level of the PDCP layer;

[0049] Step S404: When the first predetermined condition is met, stop the discard timer, set and start the RLC reset timer (Timer_RESET), and if the second predetermined condition is met, trigger the RLC entity reset process.

[0050] Among them, for the case of multiple PDCP SDUs, after the radio link control entity reset timer corresponding to one PDCP SDU triggers the radio link control entity reset p...

example 1

[0056] Example 1: Reset control process of AM RLC entity

[0057] Figure 6 A flowchart showing a reset control process of an AM RLC entity according to a reset control method according to Embodiment 1 of the present invention.

[0058] Such as Figure 6 As shown, the reset control process of the AM RLC entity includes the following processing:

[0059] Step S601, the PDCP layer receives a PDCP SDU from a higher layer;

[0060] Step S602, the PDCP layer sets and starts the SDU discarding timer Timer_Discard for each PDCP SDU;

[0061] Step S603, the PDCP layer performs related processing, for example, performing operations such as header compression, encryption, and submission to the RLC layer on the PDCP SDU;

[0062] Step S604, the RLC layer performs related processing, for example, receiving PDCP SDU from the PDCP layer, performing segmentation, concatenation, adding header information, submitting RLC PDU to the bottom layer, receiving and processing the status report o...

Embodiment 2

[0075] For TM RLC, UM RLC and AM RLC, the embodiment of the present invention further provides a reset control method of a radio link control entity.

[0076] Such as Figure 7 As shown, the reset control method according to this embodiment of the present invention includes the following processing: (step S702-step S704-2)

[0077] Step S702, for each PDCP SDU, set a corresponding discard timer for it at the PDCP layer, and start the discard timer when delivering the PDCP SDU at a higher layer of the PDCP layer;

[0078] Step S704-1, when the first predetermined condition is met, if the RLC entity is an RLC entity in confirmation mode, stop the discard timer, set and start the RLC reset timer, and when the RLC entity is satisfied In the case of the second predetermined condition, triggering a radio link control entity reset process;

[0079] Step S704-2, if the first predetermined condition is met, if the RLC entity is the RLC entity in unacknowledged mode or the RLC entity ...

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Abstract

The invention discloses a method for reset control of radio link control entity which comprises: setting a corresponding discard timer for each Packet Data Convergence Protocol service data unit (PDCP SDU) on Packet Data Convergence Protocol (PDCP) layer; starting the discard timer when the upper layer of the PDCP layer transfers the PDCP SDU; stopping the discard timer, setting and starting an RLC reset timer when a first predetermined condition is fulfilled, and triggering the reset procedure of the RLC entity when a second predetermined condition is fulfilled. The first predetermined condition is: the PDCP SDU has been transferred to the RLC layer and the RLC sequence number has been assigned before the discard timer expires. The second predetermined condition is: when the RLC reset timer expires, there exist RLC PDUs which are not transferred successfully among all of the RLC PDUs.

Description

technical field [0001] The invention relates to the technical field of digital mobile communication, in particular to a reset control method of a wireless link control entity in a wireless communication system. Background technique [0002] The radio link control layer (Radio Link Control, referred to as RLC) of the wireless interface of the third generation mobile communication system Wideband Code Division Multiple Access (WCDMA for short) includes three modes of RLC entities: transparent mode ( Transparent Mode, TM for short), Unacknowledged Mode (UM: Unacknowledged Mode, UM for short), and Acknowledged Mode (AM). The TM RLC entity and the UM RLC entity can be configured as a sending RLC entity or a receiving RLC entity. When sending an RLC entity, a Radio Link Control Protocol Data Unit (Radio Link Control Protocol Data Unit, RLC PDU for short) is sent, and the receiving RLC entity receives an RLC PDU. . The AM RLC entity includes a sending end and a receiving end, whe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L29/08
CPCH04L47/32H04L29/06993H04L12/56H04L69/28H04L1/1829H04L47/283H04L47/323H04W28/0205
Inventor 张健杜忠达
Owner ZTE CORP
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