Decoupling multi-access method based on evolutionary game theory in ultra-dense network

An ultra-dense network, evolutionary game technology, applied in the field of ultra-dense network user access and resource allocation

Inactive Publication Date: 2019-10-08
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Purpose of the invention: In order to solve the above problems, the present invention uses evolutionary game theory to solve the problem of decoupling...

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  • Decoupling multi-access method based on evolutionary game theory in ultra-dense network
  • Decoupling multi-access method based on evolutionary game theory in ultra-dense network
  • Decoupling multi-access method based on evolutionary game theory in ultra-dense network

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings.

[0035] The present invention mainly comprises following several parts:

[0036] 1. Analyze the uplink and downlink interference of base stations and users in the same cell, as well as the data transmission rate:

[0037] Assuming that there are K base stations (including one macro base station MBS and K-1 small base stations SBS) and N users in the network cell, the distribution of each node and the decoupled multiple access mechanism are as follows: figure 1 shown. Decoupling multiple access means that users can access different multiple base stations during uplink and downlink, and different types of interference will be generated at this time, such as figure 2 shown. For a given user i accessing a base station k, the interference suffered by base station k during uplink is:

[0038]

[0039] in, represents the interference from other downlink base stations...

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Abstract

The invention discloses a decoupling multi-access method based on an evolutionary game theory in an ultra-dense network. According to the invention, all users are regarded as a group, and the problemof decoupling multi-access in an ultra-dense network is solved by adopting an evolutionary game theory, i.e., the users can access a plurality of different base stations in uplink and downlink. In thegame process, the strategy of the player (namely the user) is the access selection which can be taken by the user in the uplink and downlink in the network. On the premise of ensuring the average benefit of the group, each user dynamically selects an access strategy with the aim of maximizing the access benefit of the user. In order to obtain the stable state of the group, an evolutionary game-based algorithm is provided, and the complexity of the decoupling multi-access process is effectively solved.

Description

technical field [0001] The invention relates to the field of ultra-dense network user access and resource allocation, in particular to a decoupling multi-access method based on evolutionary game theory in an ultra-dense network. Background technique [0002] The goals of the next generation of mobile communications (5G) focus on providing high-speed data services, extremely low latency and substantially increasing network capacity. User access refers to connecting the user equipment (UE) with a serving base station (BS) as the first step of radio resource management, which has an important impact on network performance. Aspects such as energy efficiency play a very important role. The analysis and design of existing user access mechanisms are almost all based on the principle of uplink (UL) and downlink (DL) association, that is, user terminals must access the same base station in uplink and downlink. This mechanism is optimal for traditional single-layer cellular networks...

Claims

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Application Information

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IPC IPC(8): H04W74/02H04W48/16H04L12/24
CPCH04L41/145H04W48/16H04W74/02
Inventor 朱琨代陈王然陈兵
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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