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External ring power control method

A technology of outer-loop power control and power, which is applied in the direction of transmission control/equalization, transmission system, energy consumption reduction, etc. It can solve the problems of not being able to know the physical channel capacity information, not being able to determine the actual code rate, and not being able to realize it.

Active Publication Date: 2012-08-08
北京万海云科技有限公司
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AI Technical Summary

Problems solved by technology

However, in practical applications, the RNC can only approximate the size of the transmission block according to the frame protocol (FP) frame, but cannot know the physical channel capacity information. Rate
[0004] Therefore, the above-mentioned outer-loop power control method proposed in the current standard cannot be realized in practical applications.

Method used

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  • External ring power control method
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Embodiment Construction

[0049] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0050] The main idea of ​​the present invention is: in the existing standards, because the RNC cannot know the physical channel capacity information used by the UE to transmit data to the base station each time, the RNC cannot make an outer loop power control decision. The present invention proposes two solution. One solution is to use the base station as the decision-making body of the outer loop power control. In practical applications, the base station can know the transmission block size, physical channel capacity and cyclic redundancy of each Enhanced Random Access Uplink Control Channel (E-PUCH) transmission. Therefore, the bit error rate corresponding to each reference bit rate can be calculated, and further power control decisions...

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Abstract

The invention discloses a method for controlling the outer ring power. The method takes a base station as a decision subject of outer ring power control or RNC can calculate the physical channel capacity which is used in each transmission according to spread-spectrum factors and time slot number through increasing the spread-spectrum factors and the time slot number which are used in each subframe in an E-DCH data frame which is sent to the RNC by the base station, and thereby the method can effectively realize high speed uplink packet access outer ring power control in practical application.

Description

technical field [0001] The invention relates to the power control technology in the mobile communication system, in particular to an outer loop power control method in the Time Division Duplex (TDD) system. Background technique [0002] In the existing TDD system, for the high-speed uplink packet access (HSUPA) outer loop power control method, the method in the current standard is realized by adjusting the mapping table of the reference code rate and the power offset by the radio network controller (RNC) of. The mapping table is used to indicate the magnitude of the power adjustment for the UE. Each preset reference code rate in the table will correspond to a power offset. When the UE transmits data according to a certain reference code rate, it will be based on the reference code rate The corresponding power offset in the table adjusts its transmit power. In the method proposed in the existing standard, the RNC needs to make a power control decision based on the preset po...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/005H04L1/00H04L1/16
CPCY02D30/70
Inventor 常永宏赵训威白杰张鹏
Owner 北京万海云科技有限公司