Novel multi-channel medium access control method of wireless sensing network
A technology of wireless sensor network and medium access control, which is applied in the direction of wireless network protocol, wireless communication, network topology, etc., can solve the problems of unfavorable network throughput and interference, increase network communication overhead, control channel dependence, etc., to avoid Effects of signal conflict, success rate improvement, and reliability improvement
Active Publication Date: 2013-02-06
山东普赛通信科技股份有限公司
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In this way, the time slice can be effectively used, but in this way, the nodes need to exchange control information on the control channel before each communication to reserve the time slice, which increases the network communication overhead and the dependence on the control channel, which is not conducive to Networks improve throughput and rely on interference
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0051] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:
[0052] The hardware platform required by the present invention is a radio frequency chip supporting multi-channel communication, such as CC2420, CC2520, CC1100, etc. produced by TI. In the initial stage of networking, all nodes in the wireless sensor network broadcast beacons on the control channel, and listen to beacons on the listening channel at regular intervals. Figure 5-8 It is a flow chart of sending / listening data.
[0053] This MAC protocol adopts the multi-channel communication mode of parallel negotiation. Each node uses its own MAC address as a seed, generates a pseudo-random sequence according to a fixed pseudo-random sequence generator, and switches between multiple channels according to this pseudo-random sequence, that is, switches channels once every wake-up cycle. In this way, other nodes only need to know the MAC address of the other nod...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a novel multi-channel medium access control method of a wireless sensing network, comprising the following steps of extracting a clock, a physical address and superframe information from a received beacon; taking the extracted physical address as a seed by an arbitrary node which receives beacons of other nodes to obtain a pseudo random sequence and calculating channels located by other nodes according to the pseudo random sequence; acquiring an awakening time slice of a receiving party according to the extracted superframe information and carrying out random delay and signal strength detection by the arbitrary node when the arbitrary node sends data to the receiving party. The invention enhances the reliability of the network, efficiently avoids signal conflict by dividing a large superframe into a plurality of small time slices, simultaneously realizes a mechanism that nodes with different superframe sizes are mutually communicated and also ensures that transmission of generated data is not influenced by utilizing the withdrawn mechanism after collision so as to realize successful current data communication.
Description
technical field [0001] The invention relates to a novel multi-channel medium access control method of a wireless sensor network. Background technique [0002] Wireless sensor networks (wireless sensor networks, WSN) is a multi-hop self-organizing network system formed by a large number of cheap micro sensor nodes deployed in the monitoring area through wireless communication. In the multi-channel MAC communication protocol, many nodes in the network are scattered in different channels, which reduces communication competition, especially the multi-channel MAC communication protocol negotiated in parallel, which overcomes the bottleneck problem of the control channel and greatly improves the throughput of the network. and network anti-interference. In the existing multi-channel mac mechanism in the wireless sensor network, the entire network adopts a unique big slot (superframe), and the signal strength detection adopted is only realized by hardware, and there is no effective...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/16H04W80/02H04W84/18
Inventor 陈冬岩邵珠瑜秦绍华
Owner 山东普赛通信科技股份有限公司