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Control method for uplink information channel

A channel, indicating channel technology, used in wireless communications, error prevention/detection using return channels, power management, etc.

Inactive Publication Date: 2014-05-14
TD TECH COMM TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the periodic transmission method, the independent midamble sequence is no longer sent alternately with the HS-SICH, so the power control of the independent midamble sequence cannot be realized through the power control result of the HS-SICH

Method used

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  • Control method for uplink information channel
  • Control method for uplink information channel
  • Control method for uplink information channel

Examples

Experimental program
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Embodiment Construction

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0024] figure 1 It is a flow chart of Embodiment 1 of the uplink channel control method of the present invention. As shown in the figure, the method includes the following steps:

[0025] Step 101, the base station determines a power control strategy for an uplink channel of the user equipment according to an uplink signal from the user equipment...

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Abstract

The invention provides a control method for an uplink information channel, which comprises the steps of: ensuring a power control strategy by a base station according an uplink signal; generating a transmitting power control command word according to the power control strategy; mapping the transmitting power control command word into a signature sequence in an enhanced-hybrid indicator channel (E-HICH); transmitting the signature sequence to user equipment by the E-HICH; jointly transmitting a first adjustment quantity under different code rates and modulation modes of an independent intermediate code sequence and a periodic transmitting parameter of the independent intermediate code sequence to the user equipment; adjusting transmitting power of the uplink information channel of the user equipment by the user equipment according to a transmitting power control command which corresponds to the signature sequence and the first adjustment quantity; and periodically transmitting the intermediate code sequence by the user equipment according to the periodic transmitting parameter and the modified transmitting power. The closed-loop power control of the uplink information channel is realized, and the control method is applicable to a technology for periodically transmitting the intermediate code sequence.

Description

technical field [0001] The invention relates to an uplink channel control method, which belongs to the technical field of Time Division-Synchronous Code Division Multiple Access (TD-SCDMA for short) wireless communication. Background technique [0002] The Standalone Midamble is an uplink pilot signal in the burst structure of the TD-SCDMA system physical channel, and is used to support the alternate transmission of the uplink two antennas of the Multiple Input Multiple Output (MIMO) user. Estimate the uplink channel of the MIMIO user. [0003] In the prior art, in order to avoid the instability of the uplink reception signal caused by shadow fading and fast fading in wireless propagation and avoid the uplink interference caused by excessive transmission power, the uplink channel of the wireless communication system usually needs to perform power control to maintain reception. Signal stability and avoid uplink interference lift. According to the existing communication stan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/08H04W52/14H04W52/54H04L1/06H04L1/18H04L1/16
Inventor 范晨
Owner TD TECH COMM TECH LTD
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