Heterogeneous cellular network energy efficiency optimization method based on independent sets

A technology of cellular network and optimization method, which is applied in network planning, energy consumption reduction, energy saving ICT, etc., and can solve problems such as impact on service experience, inability to achieve network performance optimization, and less consideration of home base station user energy consumption, etc.

Active Publication Date: 2014-09-10
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0005] Existing research mainly focuses on maximizing system throughput as the optimization goal, and seldom considers the energy consumption of home base station users, which may lead to low user energy efficiency. For a large number of users, especially those using energy-sensitive terminals, the service experience wi

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  • Heterogeneous cellular network energy efficiency optimization method based on independent sets
  • Heterogeneous cellular network energy efficiency optimization method based on independent sets
  • Heterogeneous cellular network energy efficiency optimization method based on independent sets

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Embodiment Construction

[0020] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] figure 1 Heterogeneous cellular network scene diagram, in this method, according to the transmission and interference characteristics of each sub-channel, determine the independent set of sub-channel home base station users, and establish a candidate matching scheme for each sub-channel and user independent set; based on the joint energy efficiency optimization of sub-channels, Determine the local optimal sub-channel allocation scheme; and then perform user transmission power iteration and sub-channel matching update according to the sub-channel optimization scheme. The above-mentioned process is repeated until the convergence condition is satisfied, and a jointly optimized allocation scheme of the home base station user sub-channel and power is obtained.

[0022] figure 2 A flowchart of a method for optimizing energy efficiency o...

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Abstract

The invention discloses a heterogeneous cellular network energy efficiency optimization method based on independent sets, and belongs to the technical field of wireless communication. The method comprises the following steps that firstly, a transmission power initial value is given for each user, and independent sets of sub-channel users are determined based on a macro cell, a family base station user transmission power and sub-channel characteristics; secondly, a candidate matching scheme of the sub-channels and the independent sets is built, and a partial optimal sub-channel distribution scheme is determined based on sub-channel combined energy efficiency optimization; thirdly, a sub-channel matching scheme is given, user transmission power iteration and sub-channel matching updating are executed; fourthly, the above steps are repeated until a convergence condition is met, and a family base station user sub-channel and power combined optimization distribution scheme is obtained. The heterogeneous cellular network energy efficiency optimization method based on the independent sets can effectively guarantee the QoS requirement of heterogeneous cellular network macro users and family base station users, achieve spectrum resource sharing, and improve the spectrum utilization rate and network comprehensive performance.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to the technical field of resource allocation of heterogeneous cellular networks, and relates to an energy efficiency optimization method for heterogeneous cellular networks based on independent sets. Background technique [0002] With the rapid development of wireless communication technology, all kinds of intelligent 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. Heterogeneous cellular network technology introduces other communication methods, 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 and form multi-layer network coverage, which can effectively realize User QoS guarantee improves system res...

Claims

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Application Information

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IPC IPC(8): H04W16/14H04W72/04
CPCY02B60/50Y02D30/70
Inventor 柴蓉李进涛陈前斌
Owner CHONGQING UNIV OF POSTS & TELECOMM
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