Method for processing user equipment terminal RLC/PDCP entity in dual-connection system and equipment thereof

A user equipment, dual-connection technology, applied in the field of communications

Active Publication Date: 2015-09-30
ALCATEL LUCENT SHANGHAI BELL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In a dual connectivity system, an uplink radio bearer is reconfigured from one type of uplink radio bearer to another type of uplink radio bearer, for example, an MCG bearer is reconfigured to an SCG bearer, or an SCG bearer is reconfigured to an MCG bearer, Or, how to deal with the RLC entity and the PDCP entity in the user equipment if the split radio bearer is reconfigured as an MCG bearer or an SCG bearer? For example how to handle data caching in RLC entities? There is currently no specification on how to handle RLC / PDCP entities on the user equipment side

Method used

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  • Method for processing user equipment terminal RLC/PDCP entity in dual-connection system and equipment thereof
  • Method for processing user equipment terminal RLC/PDCP entity in dual-connection system and equipment thereof
  • Method for processing user equipment terminal RLC/PDCP entity in dual-connection system and equipment thereof

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] In a traditional single connectivity system, a radio bearer can only be transmitted through one base station, and there is no reconfiguration of the radio bearer type. Therefore, in a dual connectivity system, when the uplink bearer type is reconfigured as an MCG bearer or an SCG bearer, There is no specification on how to handle RLC / PDCP entities on the UE side. The most similar scenario is the handover scenario of a single connection system. However, there are still the following differences between the two:

[0027] 1) For the handover scenario, in the target eNB, the security key needs to be reset, and the decryption algorithm is different. Therefore, for the PDCP PDU (Packet Data Unit, packet data unit) data sent back to the RLC layer, it is necessary to remove the header and decrypt it to convert it into PDCP SDU data, and then encrypt it accor...

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Abstract

An objective of the present invention is to provide a method and apparatus for processing RLC / PDCP entities at a user equipment in a dual connectivity system; when an uplink radio bearer is reconfigured from a first uplink bearer type between a user equipment and a primary and / or secondary base station into a second uplink bearer type between the user equipment and the secondary and / or primary base station, an RLC entity of the user equipment performing corresponding processing; the RLC entity transmitting indication information to a corresponding PDCP entity based on the processing; the PDCP entity performing processing based on the indication information, and transmitting PDCP PDU data corresponding to the uplink radio bearer through RLC entity corresponding to the second uplink bearer type. Compared with the prior art, the present invention provides a method of how to process RLC / PDP entities at a user equipment when an uplink radio bearer is reconfigured from one type of uplink radio bearer to another type of uplink radio bearer, particularly when the split radio bearer is reconfigured into an MCG bearer or an SCG bearer.

Description

technical field [0001] The present invention relates to the technical field of communication, and in particular to a technology for processing RLC / PDCP entities at a user equipment end in a dual connection system. Background technique [0002] With the continuous development of communication technology, continuous development and improvement of communication systems based on the original communication network architecture can provide users with more convenient and faster data communication services. [0003] The dual connectivity system is an improved communication system that is being proposed. In a dual connectivity system, a user terminal can simultaneously perform uplink communication and downlink communication with two (or more) base stations. Among the two (or more) base stations that communicate with the user terminal, there is a master base station that can manage the communication of the dual connectivity system, and the remaining base stations are secondary base s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/00
CPCH04W76/04H04L5/0035H04W36/023H04W76/025H04L5/001H04W76/15H04W76/20H04W76/11H04W76/16
Inventor 温萍萍钱德瑞卡·沃拉尔
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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