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Carrier control method and system based on multi-carrier base station

A carrier control and multi-carrier technology, applied in multi-frequency code systems, communication between multiple stations, transmission systems, etc., can solve problems affecting system capacity, coverage, interference, etc., to improve wireless resource utilization, eliminate The effect of in-band interference

Inactive Publication Date: 2008-04-30
NANTONG SANXI ELECTRONICS CO LTD
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AI Technical Summary

Problems solved by technology

[0006] When 2f2-f3=f1, that is, when the third-order intermodulation product generated by multiple carriers coincides with the carrier frequency used by another channel, it causes interference to it, thus affecting the system capacity and coverage

Method used

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  • Carrier control method and system based on multi-carrier base station
  • Carrier control method and system based on multi-carrier base station
  • Carrier control method and system based on multi-carrier base station

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Embodiment Construction

[0034] The inventor found in the process of realizing the present invention that the generation of third-order intermodulation distortion has the following rules: when the multi-carrier BTS simultaneously transmits two carrier frequencies, assuming that their frequencies are f1 and f2 respectively, then the third-order intermodulation distortion generated at this time The intermodulation distortion frequencies are (2f1-f2) and (2f2-f1), as shown in Figure 2.

[0035] Therefore, as long as the third-order intermodulation frequency does not fall on the carrier frequency used by other wireless communication devices, it will not affect it. Based on this consideration, in the following technical solutions provided by the embodiments of the present invention, by controlling the concurrent carrier frequency combination (hereinafter referred to as carrier frequency set) of the BTS system, and making the instantaneously used carrier frequency not collide with the third-order Adjust the...

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Abstract

The invention discloses a carrier control method and a system based on a multi-carrier base station. The method makes subsequent carrier frequency collection of the multi-carrier base station meet the following conditions: any carrier frequency factor in the collection should not be included in a third-order inter-modulation frequency collection generated from the carrier frequency collection; the system includes: a carrier frequency collection generation module used to generate the multi-carrier base station which allows the subsequent carrier frequency collection; a third-order inter-modulation frequency collection generation module used to generate the third-order inter-modulation frequency collection according to the carrier frequency collection generated from the carrier frequency collection generation module. The invention can lower or eliminate the inter-band disturbance of the third-order inter-modulation generated by BTS in transmitting a plurality of carrier frequencies, thus reducing or removing the impact on system capacity and coverage and further enhancing the wireless resource utilization rate of air interfaces.

Description

technical field [0001] The present invention relates to the Global System of Mobile communication (Global System of Mobilecommunication, referred to as GSM), in particular, to a carrier control method and system based on a multi-carrier base station (Base Transceiver Station, referred to as BTS), which is used to eliminate the The impact of multi-carrier BTS on the system capacity and coverage. Background technique [0002] In the GSM system (Global System of Mobile communication, Global System for Mobile Communications), a multi-carrier base station (Base Transceiver Station, referred to as BTS) can use a transmitter and a power amplifier in the downlink to transmit several GSM carrier frequencies at the same time. This kind of hardware sharing can greatly reduce the cost of BTS system equipment. [0003] However, when two or more different frequency signals act on a nonlinear circuit, they will modulate each other to generate a new frequency signal output. If the frequenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04B1/707H04L27/26H04B1/7097H04W72/54
Inventor 王东郝瑞晶阮玉峰
Owner NANTONG SANXI ELECTRONICS CO LTD
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