Random access control method and device for mobile terminal

A random access and mobile terminal technology, applied in wireless communication, electrical components, etc., can solve problems such as UE random access failure, and achieve the effect of improving the success rate

Active Publication Date: 2017-03-22
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention solves the problem of how to avoid UE random access failure due to multiple Indexes corresponding to the same common E-DCH resource

Method used

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  • Random access control method and device for mobile terminal
  • Random access control method and device for mobile terminal
  • Random access control method and device for mobile terminal

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Embodiment Construction

[0032] In the prior art, when a common E-DCH resource is occupied by a certain UE, the common E-DCH resource cannot be allocated to other UEs. When the network side configures multiple indexes to map to the same common E-DCH resource, it will inevitably result in only one UE being able to use the common E-DCH resource and not being able to allocate it to other UEs. When the common E-DCH resource is occupied, if other UEs select multiple indexes related to the common E-DCH resource for random access, it may fail for many times in a row, causing the UE to be unable to perform access in this cell. enter. It may even make the UE mistakenly believe that the cell is not suitable for camping and is a cell that is prohibited from accessing.

[0033] In the embodiment of the present invention, multiple available signature sequences are grouped, and when a random access request is detected, any available signature sequence is selected from any signature group marked as unused to perfor...

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Abstract

The invention discloses a random access control method and device for a mobile terminal. The control method comprises the following steps: grouping available signature sequences according to the number of public E-DCH (Enhanced Dedicated Channel) resources configured on a network side to obtain a plurality of signature groups; when the presence of a random access request is detected, selecting any signature group from signature groups which are marked to be unused, selecting any available signature sequence from the selected signature group, and updating a mark of the selected signature group as used; trying to perform random access on the selected available signature sequence in order to get whether the public E-DCH resources are selected successfully or not; and when the public E-DCH resources are selected successfully, transmitting uplink data on the selected public E-DCH resources. Through adoption of the method and the device, the problem of failure in random access of UE since a plurality of index numbers correspond to the same public E-DCH resource can be solved.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a random access control method and device for a mobile terminal. Background technique [0002] 3GPP Release 8 introduces the enhanced random access channel (Random Access Channel, RACH) function, and the user terminal (User Equipment, UE) can use the enhanced random access channel (CellForward Access Channel, Cell-FACH) state A dedicated channel (Enhanced Dedicated Channel, E-DCH) is used to send uplink data. [0003] In terms of enhanced RACH, Y public E-DCH resources are configured on the network side, and in the existing protocol, Y can be configured to a maximum of 32. At the same time, several available signature sequences are configured on the network side, and each available signature sequence corresponds to an index number Index in the signature list configured on the network side. During the random access process, the UE will randomly select an available s...

Claims

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Application Information

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IPC IPC(8): H04W74/08H04W72/12
CPCH04W72/121H04W74/085H04W72/535H04W72/21
Inventor 魏二岭
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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