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ZigBee cellular network

A technology of cellular network and mobile network, which is applied in the field of ZigBee cellular network, can solve the problems of short transmission distance, increased collision probability, and many times of relay tasks, so as to meet data transmission time delay, ensure efficiency and reliability, reduce The effect of relay times

Active Publication Date: 2010-08-18
SHANGHAI GUANLIN HAIAN ELECTRICAL APPLIANCES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, it will cause the nodes (usually routers) located near the coordinator to undertake the relay task too many times, for a long time, and consume a lot of power.
For an actual application environment, it is difficult for sensor nodes to be applied on an unobstructed plane. The complex transmission environment will shorten the transmission distance of one hop, resulting in more hops, and the battery consumption of nodes near the coordinator is higher. quick
In addition, as the number of retransmissions of the same data frame increases, the frequency of nodes competing for the channel increases, resulting in an increase in the probability of collision, which will reduce the reliability of communication

Method used

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  • ZigBee cellular network
  • ZigBee cellular network
  • ZigBee cellular network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] See figure 1 , the ZigBee cellular network of the present embodiment comprises: a plurality of ZigBee subnets 1 of gateway 2 and cellular arrangement, adopts between each adjacent ZigBee subnet 1, between gateway 2 and its adjacent ZigBee subnet 1 Wireless transmission conforming to ZigBee specification; gateway 2 receives data from each ZigBee subnet 1 and performs protocol conversion, and then performs wireless communication with Internet network 4 or mobile network 3 .

[0029] The coverage area of ​​described ZigBee subnetwork 1 is a regular hexagon, and ZigBee subnetwork 1 comprises: ZigBee coordinator ZC, a plurality of ZigBee routers ZR and a plurality of ZigBee terminal ZEs arranged as the center with ZigBee coordinator ZC; Adjacent Between ZigBee routers ZR, between ZigBee router ZR and its adjacent ZigBee terminal ZE, between ZigBee coordinator ZC and its adjacent ZigBee router ZR, between ZigBee coordinator ZC and its adjacent ZigBee terminal ZE Comply with ...

Embodiment 2

[0038] On the basis of embodiment 1, this embodiment has the following modifications:

[0039] The 433MHz frequency band is used for wireless transmission between adjacent ZigBee subnets 1 and between the gateway 2 and its adjacent ZigBee subnet 1 .

[0040] See figure 2 , the ZigBee subnet 1 includes: a base station BS, a plurality of ZigBee routers ZR and a plurality of ZigBee terminals ZE arranged centering on the base station BS; between adjacent ZigBee routers ZR, ZigBee router ZR and its adjacent ZigBee Between the terminals ZE, between the base station BS and its adjacent ZigBee router ZR, between the base station BS and its adjacent ZigBee terminal ZE, wireless transmission conforming to the ZigBee specification is adopted, and the transmission frequency band is 2.4GHz at a lower power. Wireless signals, and use the CSMA / CA protocol to compete for channels 1 to 16.

[0041] Point-to-point wireless transmission is adopted between the base stations BS in the adjacent ...

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Abstract

The invention relates to a ZigBee cellular network which is used for effectively reducing the frequency of relay tasks borne by a router positioned near a coordinator in a larger coverage region and ensuring the efficiency and the reliability of network data transmission. The ZigBee cellular network comprises a network gateway and a plurality of ZigBee subnetworks arranged cellularly, wherein wireless transmission according with ZigBee standard or wireless transmission adopting a 433MHz frequency band is adopted between every two adjacent ZigBee subnetworks as well as between the network gateway and the ZigBee subnetwork adjacent to the network gateway. The network gateway receives data from each ZigBee subnetwork and carries out protocol conversion and then carries out wireless communication with an Internet or movable network. All ZigBee subnetworks are arranged cellularly, which effectively shortens the communication distance among nodes in the ZigBee subnetworks, reduces the relay frequency and also reduces the relay frequency among different ZigBee subnetworks during the communication, and ensures the efficiency and the reliability of the data transmission.

Description

technical field [0001] The invention relates to a ZigBee cellular network. Background technique [0002] Existing network technology is relatively mature, for example: Chinese patent document announcement number CN1394038 discloses a kind of IP network node discovery method, uses the router node in the IP network as seed node, utilizes the information of its routing table and ARP table to search next The jump router and the hosts in the subnet directly connected to the node are recorded, and the router connected in point-to-point mode adopts a fast search method in the IP address range with priority from both ends, allowing manual intervention to skip SNMP is not supported in the network routers, thereby improving the operating efficiency of the network node discovery method. [0003] In the same network segment, if two network devices (such as terminals and terminals, terminals and routers) can communicate directly without other relay devices, their longest communication d...

Claims

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Application Information

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IPC IPC(8): H04W84/18H04B7/26H04W88/08
Inventor 贾中宁史国栋钱志文余洋李红卫陶为戈
Owner SHANGHAI GUANLIN HAIAN ELECTRICAL APPLIANCES
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