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Duplex frequency pair matching method based on dynamic mapping

A technology of dynamic mapping and matching method, applied in the direction of radio/induction link selection arrangement, selection device, etc., can solve the problem of mutual interference between uplink and downlink frequency points, achieve flexible frequency pair matching, and meet the effect of business diversification

Inactive Publication Date: 2009-02-11
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In view of this, the present invention proposes a duplex frequency pair matching method based on dynamic mapping to solve the problem caused by using duplex interval as a standard for measuring uplink and downlink isolation when the existing duplex technology dynamically allocates frequencies. Mutual interference between uplink and downlink frequencies

Method used

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  • Duplex frequency pair matching method based on dynamic mapping
  • Duplex frequency pair matching method based on dynamic mapping
  • Duplex frequency pair matching method based on dynamic mapping

Examples

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Embodiment 1

[0038] Embodiment 1. Dynamic mapping duplex frequency pair matching method in a symmetrical FDD system:

[0039] In order for a selected duplex frequency pair to be used normally without causing strong interference between uplink and downlink frequency points, it must be ensured that the duplex frequency point distance of the frequency pair satisfies a certain frequency interval requirement, that is, the minimum duplex interval, which means as follows:

[0040] | f j d - f i u | ≥ F th , ∀ ( i , j ) ∈ A - - - ( 1 )

[0041] Among them, F th is the minimum duplex interval, A ...

Embodiment 2

[0048] Embodiment 2. Dynamic mapping duplex frequency pair matching method in frequency division duplex system with asymmetric uplink and downlink frequency bands:

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Abstract

The invention discloses a duplex frequency pair matching method based on dynamic mapping. The method comprises the following steps: in the frequency division duplex system for the dynamic distribution of frequency resource, when an uplink and a downlink frequency points are matched into a duplex frequency pair through dynamic selection, a frequency pair with the interval of the central frequency of the selected uplink and downlink frequency points equal to or larger than the minimum duplex interval is selected and listed into the distribution range of the dynamic frequency. By the method, the problems of the prior duplex technology in dynamically dividing frequency, such as the mutual interference of the uplink and the downlink frequency points caused by the use of the duplex interval as the standard for measuring the isolation of the uplink and the downlink, are solved. The method effectively controls the width of a protective band between the uplink and the downlink, realizes relatively flexible matching of frequency pairs, and ensures the dynamically selected uplink and downlink can satisfy the required frequency interval, thus providing more duplex frequency pairs that meet the requirement for isolation.

Description

technical field [0001] The present invention relates to the matching method between the uplink and downlink frequency points in the frequency division duplex mobile communication system, more specifically, the present invention relates to the dynamic mapping of uplink and downlink frequency points in the frequency division duplex mobile communication system Duplex frequency pair matching method. Background technique [0002] In recent years, mobile communication technology has developed very rapidly, and the types of mobile communication services have become more and more abundant, from the initial single voice service to support various value-added services, such as ringtone download, news browsing, weather forecast, video on demand and so on. According to the analysis of the business prospects of the Universal Mobile Telecommunications System (UMTS), the demand for spectrum resources in the future will develop in two aspects: the uplink and downlink services of medium and ...

Claims

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Application Information

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IPC IPC(8): H04Q7/36
Inventor 王卫东张英海沈嵩辉钟捡荣
Owner BEIJING UNIV OF POSTS & TELECOMM
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