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Method for processing data of RLC layer and PDCP layer when RRC connection is released under LTE system

A connection release and data processing technology, applied in connection management, electrical components, wireless communication, etc., can solve the problem of data frame loss in the receiving direction

Active Publication Date: 2010-10-06
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the process stipulated in the above protocol, when the LTE leaves the connected state, the RLC SDUs that may be included in these RLC PDUs will be discarded, resulting in data frame loss in the receiving direction

Method used

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  • Method for processing data of RLC layer and PDCP layer when RRC connection is released under LTE system
  • Method for processing data of RLC layer and PDCP layer when RRC connection is released under LTE system

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Embodiment Construction

[0021] The specific implementation of the data processing method of the RLC layer and the PDCP layer when the RRC connection is released under the LTE standard is as follows figure 1 process execution.

[0022] 1) RRC notifies the RLC entity to release the RRC connection;

[0023] 2) After receiving the RRC connection release notification, the RLC entity performs integrity analysis on the header of the RLC PDU data buffered in the acceptance window, and reassembles the complete RLC PDU as an RLC SDU and delivers it to the PDCP layer;

[0024] 3) The RLC layer releases resources;

[0025] 4) After receiving the data delivered by the RLC entity, the PDCP entity delivers the received RLC SDU as a PDCP PDU to the upper layer.

[0026] 5) The PDCP layer releases resources.

[0027] In RLC UM (Un-acknowledge Mode) mode, since continuous transmission is not required, these complete RLC PDUs may not be discarded. For the RLC AM (Acknowledge Mode) mode, from the perspective of the ...

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Abstract

The invention relates to the field of radio digital communication, in particular to a method for processing the data of an RLC (radio link control) layer and a PDCP (packet data convergence protocol) layer when the RRC (radio resource control) connection is released under an LTE (long-term evolution) system. The method comprises the steps of reorganizing the data of the RLC layer and transferring the data of the PDCP layer, wherein the step for reorganizing the data of the RLC layer comprises the following steps: after receiving the message indicating that the RRC connection is released, an RLC entity carries out the analysis of integrity on the header of RLC PDU (packet data unit) data before the resources of the RLC layer are released, and the RLC entity delivers the reorganized integral RLC PDU as an RLC SDU (service data unit) to the PDCP layer; and the step for transferring the data of the PDCP layer comprises the following steps: after receiving the data delivered by the RLC entity, a PDCP entity delivers the received RLC SDU as an PDCP PDU to an upper layer before the resources of the PDCP layer are released. By using the method, the invention can make full use of the integral cache data in the receiving window of the RLC layer, reduce the frame loss rate of data in the receiving direction and improve the reliability of the data transfer.

Description

technical field [0001] The present invention relates to the field of wireless digital communication, more specifically, it is a kind of RLC (Radio Link Control radio link control) layer and the A data processing method at the PDCP (Packet Data Convergence Protocol) layer. Background technique [0002] According to the current E-UTRAN (Evolved Universal Terrestrial Radio Access Network) protocol standard (LTE 36.331V850), when the UE (User Equipment, user equipment) leaves the RRC connection state, the main process is as follows: 1. Reset MAC (Medium Access Control Media Access Control); 2. Stop all running timers except T320; 3. Release all radio resources, including releasing all established RBs (Radio Bearers) RLC entities, MAC Configuration and PDCP entity; 4. Instruct the upper layer to release the RRC connection; 5. If the exit from the connection state is not triggered by receiving the message MobilityFromEUTRACommand (from the RRC message of switching from LTE standa...

Claims

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Application Information

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IPC IPC(8): H04W76/06
Inventor 吴勇周晓星范小岗张翀
Owner ZTE CORP
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