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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 transmission control/equalization, communication between multiple stations, etc., can solve problems such as fixed expected received power value and inability to better adapt to complex wireless communication environments

Active Publication Date: 2012-07-25
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • 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

[0059] At present, the expected received power value of UpPCH set according to 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:

[0060] When the actual noise of the wireless environment is very low, the expected received power value of the UpPCH is relatively large, and the UE will send the UpPCH with unnecessary high power, thereby increasing the power consumption of the UE;

[0061] When the actual noise of the wireless environment is high, the expected received power value of the UpPCH is set relatively small, and the power of the UE to send the UpPCH is also relatively small, thereby reducing the success rate of the UE access.

[0062] The basic idea of ​​the present invention is to dynamically set the expected received power value of the UpPCH according to the actual noise of the wi...

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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 valueof 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 actualwireless 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 apparatus for adjusting a desired received power value of an uplink pilot channel (UpPCH). Background technique [0002] Uplink synchronization technology is one of the key technologies of 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, and then start to establish uplink synchronization. [0003] Before random access, the UE can know 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 the UpPCH according to the expected received power indicated by the No...

Claims

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Application Information

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