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Method and device for controlling power of control channel

A power control and control channel technology, which is applied in the field of control channel power control methods and devices, can solve the problems that the control channel power cannot be adjusted, the system performance cannot be guaranteed, and the HS-SICH power cannot be adjusted. The effect of power

Active Publication Date: 2013-06-12
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual situations, due to deep fading or other strong interference encountered in a certain transmission of HS-SCCH, the terminal receives errors, which may cause no feedback on HS-SICH, or the performance of HS-SICH will deteriorate, resulting in the base station not being able to receive HS-SICH feedback, so that the HS-SCCH power remains constant
At this time, the terminal is in a mobile state, and the distance from the base station is getting farther and farther away. The constant HS-SCCH power is increasingly unable to meet the performance requirements, which deteriorates the performance of the control channel and eventually causes an endless loop.
In addition, if the TPC carried in the received HS-SCCH is an invalid value, the HS-SICH power cannot be adjusted, which will cause the power of the control channel to be adjusted all the time, so that the system performance cannot be guaranteed

Method used

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  • Method and device for controlling power of control channel
  • Method and device for controlling power of control channel
  • Method and device for controlling power of control channel

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Embodiment Construction

[0030] In the embodiment of the present invention, the HS-SICH has no feedback due to HS-SCCH errors, or the base station cannot receive the HS-SICH due to the performance degradation of the HS-SICH itself. The base station detects whether the HS-SICH is received, and the When the number of times that the HS-SICH has not been received in a row is within the predetermined number of times, a corresponding power control scheme is given to ensure that the performance of the control channel will not deteriorate further when there is a certain error probability in the transmission of the control channel. The power required for the control channel.

[0031] In the embodiment of the present invention, the power control of the control channels HS-SCCH and HS-SICH can be performed independently or jointly.

[0032] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be f...

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Abstract

A power control method and an apparatus for control channels. The method includes that: a base station detects whether a High-Speed Shared Information Channel (HS-SICH) is received; if the HS-SICH is not received continuously, and the number of times that the HS-SICH is not received continuously is more than a predetermined number of times, the power of a High-Speed Shared Control Channel (HS-SCCH) is remained; otherwise, the power of the HS-SCCH is adjusted.

Description

technical field [0001] The present invention relates to communication technology, in particular to a power control method and device for a control channel. Background technique [0002] HSDPA (High Speed ​​Downlink Package Access) is a data technology based on shared channel transmission. Its main goal is to support high-speed packet data services. Time delay, higher system throughput capacity and stronger Qos (Quality of Service) guarantee. In HSDPA, HS-DSCH (High Speed ​​Downlink Shared Channel) is used for data transmission. Multiple UEs share the channel through time division multiplexing and code division multiplexing, and can be mapped to one or more physical channels. The physical channel It is HS-PDSCH (High-Speed ​​Physical Downlink Shared Channel, High-Speed ​​Physical Downlink Shared Channel). In order to realize fast control, HS-DSCH uses HS-SCCH (High-Speed ​​Shared Control Channel, high-speed shared control channel) as its dedicated downlink control channel, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/005
CPCH04W52/325
Inventor 郭保娟秦飞周海军牛纲
Owner DATANG MOBILE COMM EQUIP CO LTD