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Method and device for user association and resource allocation in cellular heterogeneous network

A resource allocation and heterogeneous network technology, applied in wireless communication, power management, electrical components, etc., can solve problems such as less consideration of joint user association problems and resource allocation problems, difficulty in realizing joint optimization of network resources and overall network performance optimization , to achieve the effect of minimizing electromagnetic radiation

Active Publication Date: 2018-12-28
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0005] In the existing research, most of the optimal user association strategies are determined based on factors such as user QoS requirements and network load balancing, and less consideration is given to joint user association issues and resource allocation issues, making it difficult to achieve joint optimization of network resources and overall network performance optimization.

Method used

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  • Method and device for user association and resource allocation in cellular heterogeneous network
  • Method and device for user association and resource allocation in cellular heterogeneous network
  • Method and device for user association and resource allocation in cellular heterogeneous network

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Embodiment Construction

[0029] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] figure 1It is a schematic diagram of a cellular heterogeneous network scenario. Within the coverage of macro cells, multiple low-power nodes are deployed, such as Pico cells and Femto cells. Users can choose different networks to associate with within the coverage of macro cells, and according to their own transmission rates power distribution on demand.

[0031] image 3 It is a schematic flow diagram of the cellular heterogeneous network user association and resource allocation method proposed by the present invention, as shown in the figure: the specific steps of the method are:

[0032] 301: Define user-related variables and power variables

[0033] Define the user-associated variable α ij ∈{0,1}, i=1,2,...,M,j=1,2,...,N, where M is the number of users, N is the number of networks in the system, α ij = 1 means that the i-th ...

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Abstract

The invention relates to a cellular heterogeneous network user association and resource allocation method and device, belonging to the technical field of mobile communication. The method and device comprehensively consider the characteristics of the user's service requirements and the electromagnetic radiation received by the user, determine the optimal transmit power for the user under the condition of meeting the user's QoS requirements, and determine the optimal network association strategy for the user based on the criterion of minimizing the user's electromagnetic radiation, In order to realize the minimization of the electromagnetic radiation of joint users.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and relates to a method and device for user association and resource allocation in a cellular heterogeneous network. Background technique [0002] With the rapid development of wireless communication technology, all kinds of smart terminals are showing explosive growth trend, and rich and diverse data services are also emerging. The high-speed service needs of users pose a severe challenge to traditional cellular networks. Cellular heterogeneous network technology introduces low-power nodes, such as relay sites, picocell sites, and home base stations, within the coverage of traditional macrocells, to strengthen the coverage of specific areas in a targeted manner to form multi-layer network coverage, which can effectively realize User QoS guarantee improves system resource utilization. [0003] In the cellular heterogeneous network scenario, users located in overlapping coverage area...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/24H04W52/26H04W72/04H04W72/08
CPCH04W52/244H04W52/265H04W52/267H04W72/0473H04W72/53H04W72/543
Inventor 柴蓉黄峥陈前斌
Owner CHONGQING UNIV OF POSTS & TELECOMM
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