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Method and device for setting expectation received power value of ascending pilot channel

A technology of expected received power and pilot channel, applied in the direction of transmission control/equalization, communication between multiple stations, etc., can solve problems such as inability to better adapt to complex wireless communication environments, fixed expected received power value, etc.

Active Publication Date: 2008-12-03
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the expected received power value of UpPCH is set very fixed, which cannot better adapt to the complex wireless communication environment

Method used

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  • Method and device for setting expectation received power value of ascending pilot channel
  • Method and device for setting expectation received power value of ascending pilot channel
  • Method and device for setting expectation received power value of ascending pilot channel

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Embodiment Construction

[0058] At present, the expected received power value of UpPCH set by experience or system simulation is often very different from the expected received power value of UpPCH required by the real wireless environment, and the expected received power value is still a fixed value, which will bring some problems:

[0059] When the actual noise in the wireless environment is very low, the expected received power value of the UpPCH is relatively set relatively large, and the UE will send the UpPCH with unnecessary high power, thereby increasing the power consumption of the UE;

[0060] When the actual noise in the wireless environment is high, the expected received power value of the UpPCH is relatively set to be relatively small, and the power of the UE to send the UpPCH is relatively small, thereby reducing the success rate of UE access.

[0061] The basic idea of ​​the present invention is to dynamically set the expected received power value of the UpPCH according to the actual noise ...

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Abstract

The invention discloses a method for setting the value of the expected receiving power of UpPCH, which includes the steps of: calculating the ratio between the value of the current expected receiving power of the UpPCH and the measured value of the noise of the UpPCH at the current on-position; adjusting the value of the expected receiving power of the UpPCH according to the obtained ratio. In the invention, the value of the expected receiving power of the UpPCH can be adjusted according to the ratio between the value of the current expected receiving power of the UpPCH and the measured value of the noise of the UpPCH at the current on-position, which realizes the dynamic adjustment of the value of the expected receiving power of the UpPCH according to the value of the noise of the actual wireless environment. Visibly, the technical proposal provided by the invention can better adapt to the complex wireless communication environment. The invention also discloses a device for setting the value of the expected receiving power of the UpPCH.

Description

Technical field [0001] The present invention relates to the technical field of power control in a mobile communication system, and in particular to a method and device for adjusting the expected received power value of an uplink pilot channel (UpPCH). Background technique [0002] Uplink synchronization technology is one of the key technologies of the Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system. In the TD-SCDMA system, the uplink pilot time slot (UpPTS) of each subframe is designed to establish uplink synchronization. After the user equipment (UE) is powered on, it must first establish downlink synchronization with the cell before starting to establish uplink synchronization. [0003] Before random access, the UE can learn the expected received power of the UpPCH and the access position in time through the broadcast information of the cell. The UE will set the transmit power of UpPCH according to the expected received power indicated by the Node B an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/005H04B7/26
Inventor 陈伟
Owner DATANG MOBILE COMM EQUIP CO LTD
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