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Distribution method for time frequency resource

An allocation method and time-frequency resource technology, applied in the field of time-frequency resource allocation, to achieve the effect of a wide space

Inactive Publication Date: 2007-07-25
HUAWEI TECH CO LTD
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Problems solved by technology

[0019] Therefore, the disadvantage of the existing technology is that the time-frequency pattern of each cell is completely determined by a sequence and its cyclic shift sequence in the definition domain and the value domain, and any time-frequency pattern of this cell is different from any adjacent cell. The intersection position between a time-frequency pattern is also determined by the original sequence and the time-frequency two-domain shift

Method used

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  • Distribution method for time frequency resource
  • Distribution method for time frequency resource
  • Distribution method for time frequency resource

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings.

[0039] Please refer to FIG. 2, which is a flowchart of a method for allocating time-frequency resources according to the present invention, the method comprising:

[0040] Step S11: Divide the time-frequency plane from the frequency domain into several subbands of equal width;

[0041] Step S12: By polynomial f ( i ) = Σ j = 0 k n j x ( i ) j , i=0,1 , 2,...L-1, generate multiple sequences {f(i)}, where k is a non-negative integer, the L is the length of the sequence, the x(i) is a parametric equation, and the polynomial The multiplication and addition operations of are...

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Abstract

The method for assigning time - frequency resources includes steps: (1) dividing time - frequency plane into sub bands with equal width from frequency domain; (2) based on polynomial to generate set of biased sequences, and assigning one set of biased sequences to each sub band; (3) inside a sub band, creating a combination of time - frequency position corresponding to biased sequence; selecting a combination of time - frequency position from each sub band inside to constitute a time - frequency pattern jointly. Selection of set of biased sequences from cofrequency sub band in a sector solves issue of flattened interference between adjacent cofrequency sectors.

Description

technical field [0001] The present invention relates to communication technology, in particular to a method for allocating time-frequency resources in a communication system. Background technique [0002] A wireless communication system differentiated by geographical area, such as a cellular wireless communication system, realizes frequency reuse by dividing geographically different communication areas, so as to increase the capacity of the wireless communication system. Each communication area may be called a cell. When a simple frequency resource allocation with a multiplexing factor of one is used, different cells use the same frequency, so signals of different cells working on the same frequency will interfere with each other. [0003] In the technical report of the Third Generation Partnership Project (3GPP, Third Generation Partnership Projects), it is pointed out that the downlink of the EUTRA system adopts Orthogonal Frequency Division Multiplexing (OFDMA, Orthogona...

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Application Information

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IPC IPC(8): H04L5/26H04L5/02
Inventor 曲秉玉范霄安
Owner HUAWEI TECH CO LTD