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A base station grouping method and system

A grouping method and base station technology, applied in electrical components, wireless communication, network planning, etc., can solve problems such as high cost and waste of channel information, and achieve the effects of reducing complexity, avoiding waste, and improving grouping efficiency.

Active Publication Date: 2017-07-07
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The channel estimation cost for this is very high
In the detection process after grouping, since there is only a cooperative relationship within the group, it is only necessary to know the local channel information to complete the detection, so the use of such a grouping scheme wastes most of the channel information obtained by accurate estimation.

Method used

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  • A base station grouping method and system
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  • A base station grouping method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The present invention is described below with a specific embodiment, but the protection scope of the present invention is not limited. Let the total number of base stations be B, refer to figure 2 , the method of this embodiment includes:

[0057] 101: Obtain a grouping threshold V and an overlapping threshold N, and obtain large-scale channel coefficients between all base stations and users.

[0058] 102: Construct a flag variable array idxFlag with a size of B×1, each element of the array corresponds to a base station, initialize all elements of the array to N+1, and each element of the array represents how much the base station can currently be group contains.

[0059] 103: Construct an array Cs with a size of B×(N+1), in which each row corresponds to a base station, and each column corresponds to a possible group. Since the overlap size is N, each base station may belong to N+1 different groups. This array is used to store the packet capacity values ​​calculate...

Embodiment 2

[0071] suppose in image 3 In the case of the distribution of base stations shown, the number of cells is 24, and the cell radius is 2km (km means kilometers, kilometers). During the simulation process, one user will be generated at a random position in each cell, and the base stations are grouped using the above method , and calculate the attainable rate of the system. The group size is set to 4 and the overlap size is set to 2. Channels are generated using the following formula:

[0072]

[0073] Among them, h ij Represents the channel coefficient between base station i and user j; a ij is the Rayleigh fading coefficient between base station i and user j; G(d ij ) is the large-scale fading coefficient between base station i and user j; d ij is the distance between base station i and user j; β ij is the shadow fading between base station i and user j, which obeys a Gaussian distribution with a mean of 0dB and a variance of 8dB. The large-scale fading coefficient ado...

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Abstract

The invention discloses a base station grouping method and system and relates to the technical field of mobile communications. According to the base station grouping method and system, due to cooperation between all the steps, waste caused by acquiring accurate channel information in an existing dynamic grouping method is avoided, the performance of an existing dynamic grouping scheme can be approached with low complexity, meanwhile, the performance substantially exceeds that of a static grouping method, the base station grouping complexity is reduced, and the base station grouping efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a base station grouping method and system. Background technique [0002] With the continuous evolution of mobile communication technology, the communication rate between the base station and the user increases rapidly. With limited spectrum resources, the increase in speed brings higher requirements for spectrum utilization efficiency. Dense spectrum reuse increases the interference intensity between cells, thereby reducing the signal-to-interference-noise ratio of users or base stations in the cell, thereby restricting the further improvement of the communication rate. [0003] There are many ways to solve the problem of inter-cell interference. The most original method is to pre-divide the frequency bands used by each base station during the layout of the base station, so that the cells using the same frequency for communication are far apart in geographical distr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/14
Inventor 冯伟冯思葛宁陆建华
Owner TSINGHUA UNIV