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Multi-resource joint allocation and optimization method based on user service quality requirements in perception delay tolerant network

A technology for quality of service and user recognition, which is applied in the field of joint allocation and optimization of multi-user and multi-resources based on the requirements of cognitive user service quality, which can solve the problems of waste of licensed spectrum holes and low utilization rate of licensed spectrum.

Inactive Publication Date: 2012-03-21
HANGZHOU DIANZI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, spectrum measurement research shows that the utilization rate of the licensed spectrum is very low, resulting in a serious waste of licensed spectrum holes

Method used

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  • Multi-resource joint allocation and optimization method based on user service quality requirements in perception delay tolerant network
  • Multi-resource joint allocation and optimization method based on user service quality requirements in perception delay tolerant network
  • Multi-resource joint allocation and optimization method based on user service quality requirements in perception delay tolerant network

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Embodiment Construction

[0103] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0104] figure 1 It is a flow chart of the cognitive DTN multi-resource joint allocation and optimization method based on user service quality requirements. This figure shows the specific implementation process of the cognitive DTN multi-resource joint allocation and optimization method of the present invention. The method includes first classifying DSSU and DTSU users according to the service quality requirements of different users in the DTN. Then, for cognitive users with high quality of service (DSSU), joint allocation of subcarrier bits based on margin adaptive criterion (MA) is used to minimize the interference power while meeting the user's transmission service rate requirements; for general quality of service cognitive users In order to maximize the user's transmission rate under the condition that the total interference power of the user is ...

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Abstract

The invention discloses a multi-resource joint allocation and optimization method based on user service quality requirements in a perception delay tolerant network. The method comprises the steps as follows: a perception delay tolerant network model based on OFDM (Orthogonal Frequency Division Multiplexing) modulation classifies user based on service quality requirements of different users in the network into high service quality cognition users and general service quality cognition users; for the high service quality cognition users, a subcarrier bit is adopted for joine allocation based on margin self-adapting standards, and the interference power is minimized while the user business transmission rate requirements are met; and for the general service quality cognition users, a subcarrier power is adopted for joint allocation based on rate self-adapting standards, and the user transmission rate is maximized while the user total interference power is limited. The invention adopts different multi-resource joint allocation and optimization method according to different user service quality requirements, so as to realize the resource optimized allocation of the perception delay tolerant network based on the OFDM, and realize spectrum sharing while the system resource is efficiently utilized.

Description

technical field [0001] The invention belongs to the technical field of information and communication engineering, and relates to a cognitive radio (Cognitive Radio, CR) technology in a wireless communication system, in particular to a multi-user multi-resource association based on cognitive user service quality requirements in a cognitive delay-tolerant network. Allocation and optimization methods. Background technique [0002] At present, the demand for various wireless communication services continues to grow, which leads to a continuous increase in the demand for spectrum resources in wireless communication systems, thus making wireless spectrum resources increasingly scarce. However, spectrum measurement studies show that the utilization rate of licensed spectrum is very low, resulting in serious waste of licensed spectrum holes. In order to develop a wireless communication system with spectrum resource sharing and improve the utilization efficiency of spectrum resource...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14H04W72/08H04W72/54
CPCY02B60/50Y02D30/70
Inventor 许晓荣章坚武黄爱苹
Owner HANGZHOU DIANZI UNIV
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