Method and system for realizing WCDMA and common frequency band GSM system shared antenna

Abstract

The present invention discloses WCDMA and same frequency range GSM system shared aerial implementation method and system. WCDMA and GSM master set transmitting signal direct entry aerial to radiate. GSM base station transmitting / receiving diplexer separate aerial master set sub circuit received signal into GSM system master set receiving signal and WCDMA system diversity reception signal through splitter, WCDMA base station transmitting / receiving diplexer separate antenna diversity sub circuit received signal into GSM system master set receiving signal and WCDMA system diversity reception signal through splitter. The present invention does not use sub circuit device.

Description

technical field [0001] The invention relates to WCDMA and GSM systems in the communication field, in particular to a method and a system for realizing the common antenna of WCDMA and GSM systems in the same frequency band. Background technique [0002] In the R5 standard of the WCDMA system, it is considered to extend the frequency of WCDMA to the frequency band of GSM. Therefore, there is a possibility of using the same frequency band with the GSM system in the WCDMA system. In the application of the common frequency band, the construction of the common antenna of WCDMA and GSM systems will bring Advantages in the following aspects: 1. Small project volume; 2. Low construction cost; 3. Less interference. [0003] Therefore, in the construction process of WCDMA and GSM in the same frequency band, it will be a very inevitable choice for the two systems to share the antenna. [0004] Among the schemes where WCDMA and GSM systems share antennas in the same frequency band, the ...

AI Technical Summary

Problems solved by technology

[0012] 1. The transmission signals of the WCDMA base station and the GSM base station are directly combined by a broadband combiner, which will cause a signal power loss of more than 3dB for each of the two systems, which affects its original coverage or quality for the GSM system. For the WCDMA system, It also seriously limits its ability to cover

[0013] 2. Broadband combiners can only be realized by branch line couplers or broadband coupled directional couplers, and now there are few manufacturers of such devices.

[0023] 1. Adopting the method of combining transceivers after separation and duplexing, although it can avoid large signal power loss to the two systems, the system changes are very large, and the feasibility is not strong

[0024] 2. More filter combiners are required, and the cost is higher

Images