Mobile terminal random access control method and device

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: 2019-09-27
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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  • Mobile terminal random access control method and device
  • Mobile terminal random access control method and device
  • Mobile terminal random access control method and device

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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

A mobile terminal random access control method and device, the control method includes: according to the number of public E-DCH resources configured on the network side, group the available signature sequences to obtain multiple signature groups; when it is detected that there is a random access When entering a request, select any signature group in the signature group marked as unused, select any available signature sequence in the selected signature group, and update the mark of the selected signature group as used; the selected The signature sequence can be used to perform a random access attempt to know whether the common E-DCH resource is successfully selected; when the common E-DCH resource is successfully selected, the uplink data is sent on the selected common E-DCH resource. By adopting the method and device, it is possible to avoid the problem of UE random access failure caused by multiple index numbers corresponding to the same common E-DCH resource.

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 introduced the enhanced random access channel (Random Access Channel, RACH) function, the user terminal (User Equipment, UE) can use the enhanced 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 signature sequence to send according to the configuration on the network ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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