Random access processing method and device

A random access process and random access technology, applied in the direction of selection devices, electrical components, transmission systems, etc., can solve problems such as impact processing, error processing, random access failure, etc., to ensure correct processing, avoid error processing, The effect of small signaling overhead

Active Publication Date: 2008-07-02
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

Then, if the current access reason of the terminal is handover, based on the preamble grouping rule before the update, the terminal chooses to send preamble 2; after the network side detects preamble 2, according to the updated preamble grouping rule, the network side will It is considered that the reason for the access is the initial access, so the initial access processing flow is executed, which obviously leads to wrong processing, which will affect all subsequent processing, resulting in the failure of random access

Method used

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  • Random access processing method and device
  • Random access processing method and device

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Embodiment Construction

[0032] The basic idea of ​​the method of the present invention is: the network side carries the version indication of the random access system information currently used by itself in the preamble response returned to the terminal, and the terminal determines the random access system currently used by itself after receiving the preamble response Whether the message is consistent with the network side, and determine whether to continue the current random access process according to the judgment result.

[0033] Here, the terminal determines whether the random access system message currently used by itself is consistent with the network side specifically: the terminal compares the random access system message version indicator currently stored by the terminal with the random access system message version obtained from the preamble response indicate the same. Wherein, the random access system message version indication currently stored by the terminal itself comes from the system ...

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Abstract

The invention discloses a process method for a random access process. The method is that: in leader sequence response returning to a terminal, a network side carries the edition instruction of existing used random access system information; after receiving the leader sequence response, the terminal judges whether the current used random access system information is consistent with the network side and determines whether to continue the random access process according to the judgment obtained. The invention also discloses a terminal and a network side device. The methods and the device of the invention can prevent terminal and network side from error processing caused by inconsistent information, ensuring that the network side correctly processes random access request of terminal.

Description

technical field [0001] The invention relates to a random access technology in a mobile communication system, in particular to a processing method and device for a random access process. Background technique [0002] In the Long Term Evolution (LTE, Long Term Evolution) system of the third generation mobile communication, the first two steps of the random access process are as follows: figure 1 As shown, specifically: when the terminal wants to access the network, it first sends a preamble signal to the network side, and after the network side detects the preamble signal, it returns a preamble response to the terminal. Wherein, the preamble sequence is a complex sequence with a certain length and a chip rate, and the terminal will select an appropriate preamble sequence to send each time it initiates random access. The preamble sequence response is generally transmitted on the shared channel and the shared control channel, and is identified by a special Random Access-Radio N...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04Q7/32H04B1/707H04W74/08
Inventor 房家奕毕海洲蒋海林高卓
Owner DATANG MOBILE COMM EQUIP CO LTD
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