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, shorten The effect of actual distance
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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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