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Interference measurement method, resource distribution method and its apparatus for FDMA system

An interference measurement and frequency division multiple access technology, applied in baseband systems, transmission systems, selection devices, etc., can solve the problems of inaccurate interference measurement and unreasonable resource allocation, and achieve the effects of reducing interference, saving power and improving performance.

Inactive Publication Date: 2007-10-31
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The invention provides an interference measurement method in a frequency division multiple access system, which solves the problem of inaccurate interference measurement in the prior art
[0011] The present invention also provides a resource allocation method based on interference measurement result information, which solves the problem of unreasonable resource allocation caused by inaccurate interference measurement in the prior art

Method used

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  • Interference measurement method, resource distribution method and its apparatus for FDMA system
  • Interference measurement method, resource distribution method and its apparatus for FDMA system
  • Interference measurement method, resource distribution method and its apparatus for FDMA system

Examples

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Embodiment 1

[0066] This embodiment describes the process of each sector in the frequency division multiple access communication system measuring sub-band interference and sending the measurement result, and the resource allocation process after the terminal receives the interference measurement result. The specific steps include:

[0067] First, the sector divides the entire 5MHz bandwidth into 4 sub-bands.

[0068] When dividing the sub-bands, the sub-bands can be divided evenly or unevenly. For example, a bandwidth of 5 MHz is divided into four subbands of 1.25 MHz: subband 0, subband 1, subband 2, and subband 3.

[0069] Then, measure the inter-sector interference received on each sub-band. The inter-sector interference can be reflected by measuring the ratio of all interference received on each subband to thermal noise (Interference over thermal noisepower, IOT). The specific calculation of IOT can use the following expression:

[0070] IOT = ...

Embodiment 2

[0097] This embodiment describes the process of each sector in the frequency division multiple access communication system measuring sub-band interference and sending the measurement result, and the process of the terminal receiving the interference measurement result and reporting it to the service area where it is located. The specific steps include:

[0098] The sector divides the entire 5MHz bandwidth into 4 sub-bands, and measures the interference received on each sub-band, and broadcasts the interference information to all ATs through the forward overhead F-OSI channel. Of course, unicast or multicast can also be used The way. Generally, it is necessary to perform signal processing on the interference information, such as filtering, quantization, etc. The function of filtering processing is to prevent the impact of drastic changes in interference, and the quantization processing is because the information that can be transmitted by the forward overhead channel is limited....

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Abstract

The invention discloses a interference detecting method, resource distributing method and device in frequency division multiple access system. The interference detecting method in the invention includes following steps: said system includes several geography areas, useful frequency band of reversed channel in the area are divided into at least two sub-bands; detecting the interference of said sub-bands; Sending the interference detecting result information of said sub band. With the invention, AT can obtain more accurate reversed channel interference information. So, AT decides the emitting power based on every sub band, the character of frequency selecting can be used to improve performance; considering the resource interfered little is distributed to AT, the sub band with big interference is avoided to improve the performance of AT, and the interference between the sector / area is decreased.

Description

technical field [0001] The present invention relates to a frequency division multiple access system, in particular to an interference measurement method in the frequency division multiple access system, a resource allocation method based on the interference measurement result information obtained by the method, an interference measurement device and a resource allocation device. Background technique [0002] At present, 3G mobile communication technology is gradually mature and commercially available, and 3GPP2 CDMA2000 1XEV-DO can further provide a competitive wireless access system in the next few years. However, in order to maintain competitiveness in the next decade or decades, it is necessary to introduce new wireless access technologies. At present, the industry has reached a preliminary agreement on the evolution of 3GPP2 air interface technology, which is divided into two stages. In Phase 1, multi-carrier EV-DO technology is adopted, and compatibility is more consid...

Claims

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Application Information

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IPC IPC(8): H04B1/707H04Q7/34
CPCH04L27/2647H04L25/0232
Inventor 刘珏君
Owner HUAWEI TECH CO LTD
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