Base station, wireless communication system and switch method

Abstract

The invention relates to a base station, a wireless communication system and a switching method. The invention comprises the steps that public channels and service channels are distributed on the service carrier frequency of an indoor covering system, and working frequency points of the service carrier frequency of the indoor covering system are different from working frequency points of the service carrier frequency of an outdoor macro cell system; the public channels are distributed on the beacon carrier frequency of the indoor covering system, system information only including the working frequency point information of the service carrier frequency of the indoor covering system is sent through the public channels, and the working frequency points of the beacon carrier frequency of the indoor covering system are identical to the working frequency points of the beacon carrier frequency of the outdoor macro cell system. The realization of the embodiment of the invention ensures mobile terminals to be successfully resided and be smoothly switched into anticipated wireless communication systems, thus effectively solving the problems of one frequency interference and pilot frequency pollution existing between adjacent wireless communication systems, and enhancing the communication quality of the communication systems.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a base station, a wireless communication system and a switching method. Background technique [0002] In the mobile communication network, most of the mobile communication traffic occurs indoors, so that the indoor coverage quality of the mobile communication network has a greater impact on the end user experience, that is, to improve the end user experience, it is necessary to improve the indoor coverage quality. [0003] At present, the CDMA (Code Division Multiple Access) indoor coverage system includes two parts: the CDMA signal source and the indoor distributed antenna system; among them, the CDMA signal source can be a repeater or a base station, and its working frequency can be the same as that of the outdoor macro cell , can also be different, if they are the same, the same frequency soft handover can be performed between the CDMA indoor coverage sy...

AI Technical Summary

Problems solved by technology

[0005] (1) If the same-frequency networking scheme is adopted between the indoor system and the outdoor system, as follows: figure 1 As shown, since the adjacent windows of high-rise buildings can usually receive the same-frequency signals of multiple outdoor macrocell base stations at the same time, and the radio wave attenuation between the corresponding outdoor macrocells and the windows of high-rise buildings is small, the corresponding signals are relatively low. Strong, this will inevitably cause interference to the same-frequency signal used in indoor coverage, thus forming pilot pollution

The corresponding pilot pollution will cause the terminals in the corresponding area to be prone to problems such as network drop, call drop, poor call quality, and low data transmission rate, which will affect the experience of end users

[0006] (2) If the implementation scheme of inter-frequency networking is adopted between the indoor system and the outdoor system, then in the adjacent window area of ​​a high-rise building, signals from multiple outdoor macrocell base stations and indoor system signals at different frequencies can be received at the same time Due to the limitations of the network selection strategy of mobile terminals in the CDMA system, the terminals in the CDMA system usually prefer to camp on the basic frequency point of the outdoor macro cell, which leads to the fact that the terminals in the CDMA system cannot camp on the indoor coverage of the inter-frequency network In the middle, it has been difficult to popularize the CDMA indoor and outdoor multi-frequency networking scheme

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