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Emitting power grade closed-loop control method of digital non-center communication system

A transmission power and communication system technology, applied in the direction of transmission control/equalization, etc., can solve the problems of high transmission power, waste of power consumption, and aggravated radio interference

Inactive Publication Date: 2008-01-30
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the transmission power of the transmitting station is too low, it will affect the signal-to-noise ratio of the signal received by the receiving station; if the transmitting power is too high, it will cause waste of power consumption and aggravate interference to other stations. Therefore, there is an urgent need for a Methods for Proper Control of Radio Transmitting Power

Method used

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  • Emitting power grade closed-loop control method of digital non-center communication system

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Embodiment Construction

[0015] The invention provides a closed-loop control method of transmission power level of a digital centerless communication system, which is realized during a call in the digital centerless communication system. Wherein, a complete conversation between the calling station and the called station may include multiple rounds of interaction. In a certain round, when the sending station sends data on the traffic channel, in addition to sending the coded voice information according to the agreed format, it also sends the received signal strength information of the station in the previous round to the receiving station. The schematic diagram of the traffic channel it sends is as follows Figure 1 shows.

[0016] Introduce the inventive method further below by a receiving and sending embodiment in the digital centerless communication system, and the concrete steps of this embodiment are:

[0017] Step 1: When the calling station initiates a call request to the called station on the c...

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Abstract

A transmission power graded closed-loop control of a centerless communication system realizes in the communicating process between the sending radio station and the receiving radio station. When sending data in the traffic channel, the sending end radio station sends to the receiving end coding voice information according to the appointed format, as well as the received signal strength of the radio station in the last round; the next round when the receiving end acting as the sending end radio station, the radio station adjusts and ensures the transmission power grade of the current round according to the transmission power of the last round and the signal strength information the other party received. The self-adaptive control of the radio station transmission power against the method can not only ensure the receiving radio station to effectively receive the transmission signals of the sending station, but also avoid wasting the transmission power of the sending station.

Description

technical field [0001] The invention relates to a transmission power control method of a wireless communication system, in particular to a closed-loop control method of a transmission power level of a digital centerless communication system. Background technique [0002] The digital centerless communication system is mainly implemented based on the TDD digital communication system. The system has a certain time slot structure, and the typical communication implementation method is half-duplex. According to the regulations of the State Radio Regulatory Commission, the frequency band used by the digital centerless mobile communication system is 915.0125~916.9875MHz. In order to achieve better compatibility with the existing GSM mobile station radio frequency module, the frequency band can be divided into 9 frequency points with a bandwidth of 200khz, and each frequency point is divided into 8 time slots with a frame length of 4.615ms ( Time slot numbers 0-7), each time slot i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/005
Inventor 邓红超张严李夏林敬东
Owner SPREADTRUM COMM (SHANGHAI) CO LTD