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Multi-cell frequency multiplex realizing method

A technology of frequency multiplexing and implementation method, which is applied in the direction of multiplexing communication, frequency division multiplexing system, frequency division multiplexing system components, etc. problem, to avoid co-channel interference and improve transmission performance

Inactive Publication Date: 2006-12-27
HUAWEI TECH CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

Although the interference between cells can be avoided through the above method, the interference between cells at the cell boundary is still relatively large, which affects the communication performance of the communication system

Method used

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Embodiment Construction

[0037] Since inter-cell interference can be effectively reduced or even avoided by means of frequency division, the present invention considers setting the frequency reuse factor at the boundary to be greater than 1 in order to avoid interference at the cell boundary.

[0038] The present invention provides a multi-cell multiplexing method based on a single-carrier or multi-carrier multiple access mode in wireless communication. In the method, adjacent cells share resources in a time-frequency multiplexing manner to avoid co-frequency interference. At the same time, the effect of frequency diversity can also be obtained on a wider frequency band.

[0039] In the present invention, the system frequency resources are mainly divided into multiple subbands, and a set period of time is divided into multiple basic time units. In any time unit, each cell occupies different frequency resources (that is, different subbands). Band), so that multiple adjacent cells use different subbands...

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Abstract

The related realization method for frequency multiplexing in some subzones comprises: dividing resource in wireless communication system into some sub-frequency bands, setting time unit to occupy sub-frequency band for every subzone; and allocating sub band for wireless communication business. This invention avoids same frequency interference efficiently, and can obtain full-band frequency diversity.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for realizing frequency reuse of multiple cells. Background technique [0002] During the long-term evolution of 3GPP, the single-carrier technology combined with frequency domain equalization has attracted much attention. IFDMA (interleaved frequency division multiple access, interleaved frequency division multiple access) and SC-FDMA (single carrier-frequency divisionmultiple access, single carrier - frequency division multiple access). The frequency division multiple access means that users are completely separated in frequency, thereby avoiding multiple access interference among users. [0003] The basic principle of the above two FDMA methods is to obtain different performances in the frequency domain through simple operations on the data symbols in the time domain. Specifically, the data symbols use a block as a processing unit. After repetition, i...

Claims

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Application Information

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IPC IPC(8): H04J1/00H04J1/10H04Q7/22
Inventor 何玉娟
Owner HUAWEI TECH CO LTD
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