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Method and device for reconnecting multi-carrier system

A multi-carrier system and connection re-establishment technology, applied in the field of communication, can solve problems such as no solution, save signaling overhead and state transition delay, and avoid PCC confusion.

Active Publication Date: 2014-06-04
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, only the RRC connection re-establishment process in the case of a single carrier is stipulated, but for the case of multiple carriers (for example, when the UE is in the CA state), if the RRC connection re-establishment process occurs, the RRC connection re-establishment How should the process be carried out, there is no corresponding solution in the prior art

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  • Method and device for reconnecting multi-carrier system

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Embodiment Construction

[0044] The following will clearly and completely describe the technical solution of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0045] In order to enable the public to clearly understand the technical solutions provided by the embodiments of the present invention, the following knowledge is introduced first.

[0046] (1) The RRC connection reestablishment process in the LTE system.

[0047]Since the LTE system is a single-carrier system, when the UE fails to handover, RLF (Radio Link Failure, radio link failure), RRC connection reconfiguration fails, or integrity check fails, the UE will be triggered to perf...

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Abstract

A method and device for connection reestablishment in multi-carrier system are disclosed in the present invention. The method includes that: if a User Equipment (UE) in a multi-carrier state triggers a connection reestablishment process, a device at network side receives a connection reestablishment request message which is sent to the device at network side by the UE in a selected cell; the device at network side performs wireless resource configuration for the multiple carriers of the UE according to the connection reestablishment request message. With the embodiments of the present invention, the signaling overload of the air interface and the delay of state transfer are reduced.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a connection reestablishment method and equipment for a multi-carrier system. Background technique [0002] LTE (LongTerm Evolution, long-term evolution) is the evolution of 3G (3rd Generation, third-generation digital communication). LTE improves and enhances the air access technology of 3G, and adopts OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) and MIMO (Multiple Input Multiple Output, multiple input multiple output) as the evolution standard of the LTE wireless network. Among them, in the LTE system and the previous wireless communication system, there is only one carrier in a cell, such as figure 1 As shown, the maximum bandwidth in the LTE system is 20MHz; and under the spectrum bandwidth of 20MHz, LTE can provide a peak rate of downlink 100Mbit / s and uplink 50Mbit / s, improve the performance of cell edge users...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W76/02H04L27/26
CPCH04W76/025H04W76/15
Inventor 梁靖李海涛
Owner DATANG MOBILE COMM EQUIP CO LTD