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Random access method and equipment

A technology for equipment and user equipment, applied in the communication field, can solve the problems of abnormal link, failure of random access, and increased UE delay.

Inactive Publication Date: 2011-12-21
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the prior art, only when the eNB detects that the link between the UE and the eNB is abnormal, will it release the PUCCH resources and SRS resources allocated for the UE, and the random access of the UE may be successful
However, it takes a period of time for the eNB to detect that the link between the UE and the eNB is abnormal. During this period of time, the random access of the UE cannot be successful, which leads to an increase in the delay of the successful random access of the UE.

Method used

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Embodiment Construction

[0027] The following embodiments of the present invention provide a random access method, user equipment, and network system, wherein the user equipment sends indication information to the base station when the number of times the scheduling request is sent reaches a predetermined number, and the indication information indicates that the user equipment initiates random access. The reason for the access is that the number of times the scheduling request is sent reaches the predetermined number, so that the base station knows that the random access initiated by the UE is triggered because the number of times the scheduling request of the user equipment is sent reaches the predetermined number, so that the base station can release the user equipment in time. The resources allocated by the base station for the user equipment when accessing a cell controlled by the base station once, such as PUCCH resources and SRS resources, reduce the time delay for successful random access of the ...

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Abstract

Embodiments of the present invention provide a random access method and device, wherein the random access method includes: a user equipment sends a scheduling request to a base station; if the number of times the user equipment sends a scheduling request reaches a predetermined number, the user equipment sends a The base station sends indication information, where the indication information indicates that the reason for the user equipment to initiate random access is that the number of sending scheduling requests reaches a predetermined number of times, so that the base station releases resources allocated for the user equipment. By using the technical solutions provided by the embodiments of the present invention, the UE random access time delay can be reduced.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a random access method and equipment. Background technique [0002] In a long term evolution (Long Term Evolution, LTE) system, if a user equipment (User Equipment, UE) has uplink data to be sent, the UE sends a scheduling request (Scheduling Request, SR) to an evolved base station (eNodeB, eNB). After receiving the scheduling request, the eNB sends an uplink scheduling confirmation (UL GRANT) message to the UE. [0003] However, due to channel quality or eNB's inability to correctly decode the scheduling request, etc., when the UE fails to receive the uplink scheduling confirmation message sent by the eNB within a predetermined period of time, it will repeatedly send the scheduling request to the eNB. When the scheduling request sent by the UE reaches the maximum number of transmissions, the UE will release the Physical Uplink Control Channel (PUCCH) resource and...

Claims

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Application Information

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IPC IPC(8): H04W72/12H04W74/08H04W76/06
Inventor 吴泽民
Owner HUAWEI TECH CO LTD
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