Zigbee and Bluetooth are a wireless communication technology. zigBee transmission distance depends on the transmit power, there are hundreds to thousands of meters, but the transmission rate is only 250kps, but this is only a theoretical value. The transmission distance of Bluetooth is only about 10 meters, and the transmission speed is 1.8M/s~2.1M/s. ZigBee is used in smart home more, and Bluetooth is used in especially short distance file transfer.
The continuous development of society, the advantages of wireless have gradually appeared. Such as; wireless communication coverage is large, almost unlimited by geography: wireless communication can be set up at any time, at any time to increase the link, installation, expansion is convenient; wireless communication can be quickly (within tens of minutes) to set up a communication link, to achieve the purpose of temporary, emergency, disaster communication: while wired communication has the limitations of the ridge, a longer response time. Wireless communications in terms of reliability, availability and resistance to destruction out of the traditional wired communication methods, especially in some special geographic environments, wireless than wired much more convenient. With the development and maturity of wireless communication. In industrial control, medical, automotive electronics. Are widely used
ZigBee, Wi-Fi, Bluetooth and several wireless technology comparison is shown in the table below:
1, WIFI, WIFI is currently the most widely used wireless communication technology, the transmission distance in the 100-300M, the rate up to 300Mbps, the power consumption of 10-50mA.
2, Zigbee. Transmission distance 50-300M, rate 250kbps, power consumption 5mA, the most important feature is that it can be self-organizing network, the number of network nodes up to 65000.
3, Bluetooth, transmission distance 2-30M, rate 1Mbps, power consumption between zigbee and WIFI.
These three wireless technologies, from the transmission distance, is WIFI, ZigBee, Bluetooth; from the power consumption, is WIFI, Bluetooth, ZigBee, the latter two can only rely on battery power; from the transmission rate, is WIFI, ZigBee, Bluetooth.
At present, the advantage of WIFI is widely used, has been popularized to tens of thousands of households. zigBee's advantage is the low power consumption and self-organization network; power carrier's advantage is the transmission rate; bluetooth's advantage of the network is simple. However, these three technologies, also have their own shortcomings, there is no one technology can fully meet all the requirements of the smart home.
ZigBee is based on the IEEE802.15.4 standard low-power LAN protocol, is an open wireless network-like network technology. Unlike traditional star, point-to-point, mesh networks that use least-cost nodes to provide coverage for all networked devices, ZigBee uses a dynamic, autonomous routing protocol based on AODV routing technology. In AODV, when a node needs to connect, then it will broadcast a route request message, the other nodes look up in the routing table, if there is a route to reach the target node, then it will feed back to the source node, the source node picks a reliable route with the minimum number of hops and stores the information into the local routing table to be used for future needs, if a routing line fails, the node is able to simply select another alternative routing line . If the shortest route between source and destination is blocked due to wall or multipath interference, ZigBee is able to adaptively find a longer but available routing route. This unique architecture gives ZigBee proximity, low complexity, self-organization, low power consumption, and high data rates.
ZigBee is an open wireless network-like networking technology based on the IEEE802.15.4 standard low-power LAN protocol. Unlike traditional star, point-to-point, mesh networks that use the lowest-cost nodes to provide coverage for all networked devices in the architecture, ZigBee uses a dynamic, autonomous routing protocol based on the AODV routing technology. In AODV, when a node needs to connect, then it will broadcast a route request message, the other nodes look up in the routing table, if there is a route to reach the target node, then it will feed back to the source node, the source node picks a reliable route with the minimum number of hops and stores the information into the local routing table to be used for future needs, if a routing line fails, the node is able to simply select another alternative routing line . If the shortest route between source and destination is blocked due to wall or multipath interference, ZigBee is able to adaptively find a longer but available routing route. This unique architecture gives ZigBee proximity, low complexity, self-organization, low power consumption, and high data rates.
Because of these characteristics, ZigBee is mainly used in the field of automation as well as remote control, aiming to meet the wireless networking and control of small and inexpensive devices, typical applications such as wireless sensor networks, in the field of home/commercial automation, smart energy, healthcare, and retail, etc. ZigBee has also proved to be a reliable wireless networking solution. When developing 2.4 GHz ZigBee?wireless networking applications, design engineers are often faced with system partitioning choices: what is the best level of integration for ZigBee connectivity and network processing solutions? What is the best choice from performance, power and cost perspectives? Is it better to have a ZigBee System-on-Chip (SoC) that integrates the 2.4 GHz wireless transceiver and processing core into a single chip solution? Or is a discrete solution with a separate transceiver and main processor better?
With the increasing use of ZigBee in automation, mobile internet, and smart wearables, the industry has an urgent need for low power sensors and chips for connectivity and compatibility. In response, the ZigBee Alliance launched a new protocol 920IP, the standard is the world's first wireless mesh network (Mesh Networking) solution based on the Internet Protocol version 6 (IPv6), the future will be applied to low power consumption and low-cost home energy management mesh network and its related equipment, to enhance the energy efficiency of the Internet of Things devices and interoperability. With the introduction of this protocol, ZigBee's functionality in IoT will be gradually improved and IoT device performance will be greatly enhanced.