According to market analysis agencies, smart homes will become the largest users of the Internet of Things after 2017, and application integration of technologies such as IoT technology, cloud computing and triple play will lead to the gradual improvement of smart home functions. The huge market also means fierce competition in communication standards, and wireless smart homes are expected to dominate the market.
Smart home is a residential platform, using integrated wiring technology, network communication technology, security technology, automatic control technology, audio and video technology to integrate home life related facilities, and build efficient management system for residential facilities and family schedules. Home safety, convenience, comfort, and artistry, and achieve an environmentally friendly and energy-saving living environment. With the popularity of intelligence, smart home has gradually become the focus of attention.
So what is the Mesh network? A wireless mesh network (wireless mesh network), also known as a "multi-hop" network, consists of mesh routers (routers) and mesh clients (clients), where mesh routers form a backbone network and are connected to a wired internet network. Provide multi-hop wireless internet connection for mesh clients. Wireless mesh network is a new network structure based on multi-hop routing and peer-to-peer network technology. It has the characteristics of mobile broadband, and it can dynamically expand itself, self-organizing network, self-management, automatic repair and self-balancing.
Ms. Li Jiarong, Senior Manager of Marketing for Asia Pacific in Bluetooth Technology Alliance, said: "In the face of opportunities in the IoT space, Bluetooth has several technical features that must be overcome. First, because IoT will lead to a significant increase in the number of connected devices, existing IPv4 support capabilities will be limited. IPv6 technical support is imperative, and the networking capabilities will be tested. Second, portable mobile devices are more demanding on power consumption. After the Internet of Things and life are more closely integrated, security is also important. Consider it."
Bluetooth wireless technology works in the license-free 2.4GHz ISM band. It uses 1600hop/s fast frequency hopping technology, forward error correction coding technology and FM modulation. The device is simple and supports point-to-point and point-to-multipoint communication. For IoT applications, the biggest fatal flaw is point-to-point transmission, but Bluetooth Mesh may make up for this deficiency.
CSR: More than 65,000 nodes can be connected per Mesh network
Bluetooth Mesh was born out of CSR Mesh, a proprietary protocol advocated by CSR. CSR Mesh is a new Bluetooth Smart solution from CSR. This technology is mainly integrated into a single chip by using Bluetooth configuration and control protocols. With star network and relay technology, each network can connect more than 65,000 nodes, and the network and network can also be interconnected. Build a whole home automation by interconnecting or directly manipulating countless devices with Bluetooth Smart on the same phone, tablet or PC.
In such a home network consisting of CSR Mesh, all data is encrypted using the AES algorithm, and the data transfer is also based on the classic nested key exchange & encryption protocol Diffee-Hellman-Merkle. Whenever a new device wants to access the network, it needs to rely on the 128-bit UUID owned by the device to facilitate the identification of the mobile APP. Then it must be authenticated by the 64-bit code to connect to the mobile phone. Network key for communication.
It can transmit information between nodes and nodes through the communication between nodes and nodes, so as to control the function of the target device without the traditional gateway. Therefore, we can use the APP on the mobile phone or tablet. Control is very convenient. The wireless Mesh network expands the wireless "hotspot" in the traditional WLAN into a wireless "hot zone" with a large area coverage. Wireless Mesh is ideal for wireless area network solutions that cover large open areas.
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