Method and device for improving edge user performances through cooperative scheduling in OFDMA system

An edge user and performance technology, applied in the field of communication, can solve the problems of inter-cell mutual interference, interference, increase system complexity and overhead, etc., and achieve the effect of eliminating inter-cell interference, improving transmission capacity, and increasing implementation complexity.

Inactive Publication Date: 2014-03-05
范家庚
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Problems solved by technology

Both semi-static and dynamic require communication between cells and information interaction between cells, which increases the complexity and overhead of the system. Therefore, static interference coordination technology is generally used at present.
[0006] Static interference coordination technology can reasonably allocate time-frequency domain channel resources through network planning between cells in advance, which is simple and convenient. However, when the load and service characteristics between cells change, resources cannot be flexibly coordinated to reduce inter-cell interference. mutual interference to meet the different needs of the community

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  • Method and device for improving edge user performances through cooperative scheduling in OFDMA system
  • Method and device for improving edge user performances through cooperative scheduling in OFDMA system
  • Method and device for improving edge user performances through cooperative scheduling in OFDMA system

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Embodiment Construction

[0027] Below, refer to the attached Figure 1~4 The method and device for improving the performance of edge users in the OFDMA system of the present invention are described in detail.

[0028] Such as figure 2As shown, it is a flow chart of the method for improving the performance of edge users in cooperation with scheduling in the present invention. The method flow specifically includes the following steps:

[0029] Step 101: Obtain and store the configuration parameters set by this cell, including the ZONE number parameter M, the symbol parameters S(1), S(2), ..., S(M) and sub-channelization of all ZONEs Gain parameters K(1), K(2), ..., K(M);

[0030] Wherein, in step 101, M is 4bits bit width data, and its range is 1~8, and initial value is 0; S(i'), i'∈[1,8] is 6bits bit width data, and its range is 1 ~35, the initial value is 0; K(i'), i'∈[1, 8] is 16bits wide data, its range is 2906-21796, the initial value is 0.

[0031] Step 102: According to whether the ZONE coun...

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Abstract

A method and apparatus for improving the performance of edge users in an Orthogonal Frequency Division Multiple Access (OFDMA) system are provided in the present invention, wherein the method includes the following steps: step A: obtaining and storing configuration parameters set in a local cell, wherein the configuration parameters include a ZONE number parameter M, the symbol parameters and subchannelization gain parameters of all ZONEs; step B: obtaining a sequence awaiting gain processing and performing decomposition processing, multiplying the decomposition processing result of the sequence awaiting gain processing by the subchannelization gain parameter of the current ZONE, and obtaining a peak gain result sequence; wherein the sequence awaiting gain processing is equivalent to an OFDMA symbol. Without the need of reallocating the time and frequency domain channel resources, the present invention can reduce the mutual interference between cells and improve the performance of the edge users.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for improving the performance of edge users in coordination with scheduling in an OFDMA system. Background technique [0002] Inter-cell interference is an inherent problem in cellular mobile communication systems, which seriously affects the transmission capabilities of users in the system. The main reason is that users using the same frequency resources between cells will interfere with each other. figure 1 (a) is the interference situation of the uplink. Base station 1 (BS1) and base station 2 (BS2) are the serving base stations of terminal 1 (MS1) and terminal 2 (MS2), respectively, assuming that the set of subcarriers allocated by BS1 to MS1 for uplink transmission is SC1 (sub-carrier), BS2 The set of subcarriers allocated to MS2 for uplink transmission is SC2, and the intersection of SC1 and SC2 is SC. If the SC is not an empty set, when...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/18H04W72/12H04B7/208
CPCH04J11/005H04L5/0062H04L5/0037
Inventor 胡明
Owner 范家庚
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