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Body area network resource joint optimization scheduling method based on network lifetime maximization

A joint optimization and scheduling method technology, applied in advanced technology, electrical components, sustainable buildings, etc., can solve the problem of joint optimization of network resources that is difficult to take into account user QoS guarantee, can not achieve overall network performance optimization, does not comprehensively consider node transmission mechanism, Issues such as power allocation and network resource utilization

Active Publication Date: 2014-07-02
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0005] Existing research considers node cooperative transmission optimization or node power allocation mechanism in isolation, but does not comprehensively consider node transmission mechanism, power allocation and network resource utilization, it is difficult to take into account user QoS guarantee and joint optimization of network resources, and cannot achieve overall network performance optimization

Method used

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  • Body area network resource joint optimization scheduling method based on network lifetime maximization
  • Body area network resource joint optimization scheduling method based on network lifetime maximization
  • Body area network resource joint optimization scheduling method based on network lifetime maximization

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Embodiment Construction

[0023] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0024] figure 1 It is a schematic diagram of the network scenario of the wireless body area network. The body area network is composed of several sensor nodes and a coordinator. The coordinator is responsible for centralized scheduling and management of the time slot and power allocation of each node.

[0025] figure 2 The flow diagram of the method for maximizing the lifetime of the body area network based on the resource joint optimization scheduling proposed by the present invention is shown in the figure: the specific steps of this method are:

[0026]201: Each node sends a service request message to the coordinator

[0027] Each node in the body area network performs service request and information transmission in units of frames. In the service request phase, each node accesses the channel in CSMA mode and sends a service request m...

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Abstract

The invention discloses a body area network resource joint optimization scheduling method based on network lifetime maximization, and belongs to the technical field of wireless body area network resource scheduling. The method includes the steps that nodes for carrying out information transmission in a body area network send out a service request message to a coordinator; the coordinator uniformly optimizes a scheduling network and node resources on the basis of a network lifetime maximization rule, determines information transmission modes of the nodes as direct transmission or relay cooperation, selects relay nodes for the nodes in the cooperative transmission mode in an optimized mode, and distributes and sends time slots and transmission power for source nodes and cooperative nodes in an optimized mode. According to the method, service characteristics of the nodes and the utilization rate of network time slot resources are fully taken into consideration, the time slots and the power are distributed and sent for the nodes on the basis of the network lifetime maximization rule in the optimized mode, the cooperative relay nodes are selected for the nodes needing relay cooperation in an optimized mode, and maximization of network lifetime is achieved.

Description

technical field [0001] The invention belongs to the technical field of wireless body area network resource scheduling, and relates to a joint optimal scheduling method of body area network resources based on network lifetime maximization. Background technique [0002] Wireless Body Area Network (WBAN) is a human-centered network composed of several wireless sensor nodes and one or more coordinators, which can pass various sensors placed around or inside the human body. The nodes sense and collect some important physiological parameters of the human body, and then send them to the remote server through wireless and wired methods, so as to effectively monitor the health status of the human body. WBAN has attracted widespread attention in recent years because of its portability and ease of data interaction management, and has been used in military, entertainment, consumer electronics, smart home, public services, especially healthcare and other fields. [0003] In WBAN applica...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W72/12
CPCY02B60/50Y02D30/70
Inventor 陈前斌王盼盼柴蓉
Owner CHONGQING UNIV OF POSTS & TELECOMM
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