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A Joint Optimal Scheduling Method for Body Area Network Resources Based on Network Lifetime Maximization

A technology of joint optimization and scheduling method, applied in the fields of electrical components, wireless communication, etc., can solve the problem that the overall performance of the network cannot be optimized, it is difficult to take into account the joint optimization of network resources for user QoS guarantee, and the node transmission mechanism, power allocation and network resources are not comprehensively considered. Resource utilization, etc.

Active Publication Date: 2016-11-30
CHONGQING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
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  • Application Information

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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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  • A Joint Optimal Scheduling Method for Body Area Network Resources Based on Network Lifetime Maximization
  • A Joint Optimal Scheduling Method for Body Area Network Resources Based on Network Lifetime Maximization
  • A Joint Optimal Scheduling Method for Body Area Network Resources 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 in conjunction with the accompanying drawings.

[0024] figure 1 It is a schematic diagram of a 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 It is a schematic flow diagram of the method for maximizing the lifetime of a body area network based on resource joint optimization scheduling proposed in the present invention, as shown in the figure: the specific steps of the method are:

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

[0027] In the body area network, each node 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 message to the coordinat...

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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 specifically includes: each node in the body area network that intends to transmit information sends a service request message to the coordinator, and the coordinator uniformly optimizes and schedules the network and node resources based on the maximization criterion of the network lifetime, and determines that the information transmission mode of each node is direct transmission Or relay cooperation, optimally select relay nodes for nodes adopting the cooperative transmission mode, and optimally allocate sending time slots and transmission power for each source node and cooperative nodes. This method comprehensively considers the service characteristics of each node and the utilization rate of network time slot resources, optimizes the allocation of transmission time slots and power for each node based on the maximization of network lifetime, and optimally selects cooperative relay nodes for nodes that need to use relay cooperation. Thus, the lifetime of the network is maximized.

Description

Technical field [0001] The invention belongs to the technical field of wireless body area network resource scheduling, and relates to a body area network resource joint optimization scheduling method based on network lifetime maximization. Background technique [0002] Wireless Body Area Network (WBAN) is a human body-centered network composed of several wireless sensor nodes and one or more coordinators. It can pass various sensors placed around or inside the human body. The node perceives and collects some important physiological parameters of the human body, and then sends them to the remote server through wireless and wired methods to realize effective monitoring of the human health status. WBAN has received widespread attention in recent years because of its convenient portability and easy data interaction management. It has been used in military, entertainment, consumer electronics, smart home, public services, and especially medical care. [0003] In WBAN applications, it i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04W72/12
Inventor 陈前斌王盼盼柴蓉
Owner CHONGQING UNIV OF POSTS & TELECOMM
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