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Method for antenna switching diversity in wireless communication system and its device

A wireless communication system, antenna switching technology, applied in diversity/multi-antenna system, selection device, communication between multiple stations, etc., can solve the problem of complex antenna switching circuit, achieve good results, improve quality, reduce power consumption effect

Inactive Publication Date: 2004-05-26
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Overcome the disadvantages of complex antenna switching circuits in the prior art

Method used

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  • Method for antenna switching diversity in wireless communication system and its device
  • Method for antenna switching diversity in wireless communication system and its device
  • Method for antenna switching diversity in wireless communication system and its device

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Embodiment Construction

[0042] Such as figure 1 as shown, figure 1 It is an overall block diagram of the antenna switching diversity device of the preferred embodiment of the present invention. The wireless communication system has two antennas 101 and 102, which are selectively connected to a transmitter 104 and a receiver 105 through an antenna switch 103. The received signal is demodulated by the demodulator 107 and the result is sent to the digital signal processor 108 , and the field strength indication value 109 of the received signal is also directly sent to the digital signal processor 108 . The digital signal processor 108 judges which antenna should be selected after certain criteria according to the demodulated data and the RSSI value of the signal, and sends a control signal to the antenna switch 103 to control the antenna switching.

[0043] The basis for controlling antenna switching in the present invention mainly comes from the values ​​of two variables, one is the received signal s...

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Abstract

Two important factors for switching antenna in the invention are indicating RSSI value of intensity of received signal and value of error frame. Based on certain standard, using the two values determines which antenna should be selected. If degradation of reliability of received signals is caused by shelter from single antenna, then method for switching to another antenna is utilized to improve quality of received signal. The said method is also can be used for gusty interference to guarantee reliability of received signal. Besides selecting receiving antenna, transmission antenna is also selected. Fine results of receiving and transmitting signals are guaranteed as well as the invention plays action for balancing up loading and down loading transmission, the invention is simple and resultful, saving hardware spending and lowering power consumption.

Description

(1) Technical field [0001] The present invention relates to a method and device for antenna switching diversity, in particular to a method and device for antenna switching diversity in TDMA-TDD (Time Division Multiple Access / Time division Duplex: Time Division Multiple Access, Time Division Duplex) wireless communication system. (2) Background technology [0002] Antenna diversity schemes are mainly divided into two categories: one is selective diversity, which consists of multiple receivers and selects the best receiver signal after detection; the other is switching diversity, which has a receiver and Multiple antenna branches, through switching between the antennas to obtain the best received signal. The circuit size of the former system is relatively large, the cost is expensive, and consumes a lot of power; the latter can make the system small in size, light in weight, and low in power consumption, so the latter type of antenna diversity is more suitable for base station...

Claims

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Application Information

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IPC IPC(8): H04B7/02H04B7/26
CPCY02D30/70
Inventor 肖洁华陈弘方为
Owner ZTE CORP
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