Bluetooth Mesh smart home field beyond ZigBee?

Market analysts predict that smart homes will become the largest users of the Internet of Things after 2017, and the huge market means fierce competition in communication standards. At present, ZigBee is receiving much attention. Thread is in awesome. Can Bluetooth technology, which is considered to have fatal flaws, become the final standard?

Bluetooth wireless technology works in the license-free 2.4GHz ISM band, using 1600hop/s fast frequency hopping technology, forward error correction coding (FEC) technology and FM modulation. The device is simple and supports point-to-point and point. To multi-point communication. For IoT applications, the biggest fatal flaw is point-to-point transmission, but Bluetooth Mesh may make up for this deficiency.

The challenge of Bluetooth technology in the Internet of Things era

Bluetooth Mesh smart home field beyond ZigBee?

In the past 20 years, humans have experienced two major connections. The first time, the Internet has gradually spread since the 1990s, and the network cable has connected 1.1 billion people. The second time is the popularity of mobile phones after 2000 and the Earth people are once again closely connected. Bluetooth technology was created in 1994 by telecom giant Ericsson. Subsequently, the Bluetooth Technology Alliance was established in 1998. The founding companies include: Apple, Ericsson, Intel, Lenovo, Microsoft, Nokia, and Toshiba.

Now we are experiencing the third big connection in the IoT phase, and the Bluetooth technology created in the mobile era is facing challenges. Ms. Li Jiarong, Senior Manager of Marketing, Asia Pacific, 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."

In order to comply with the trend of the times, Bluetooth low-power (BLE) technology has a better signal-to-noise ratio than traditional Bluetooth, and the transmission distance is farther, usually up to 50 meters, while the traditional one is only 6 to 8 meters. Bluetooth BLE has low power consumption, saves power, and has a small amount of data transmission but a fast rate. Despite the many advantages, there are always problems such as short distance and poor networking ability in the fields of smart home and intelligent lighting.

Subsequently, at the end of 2014, the Bluetooth Technology Alliance launched a new Bluetooth 4.2 core specification, which made significant improvements in privacy protection, transmission speed and direct access to the Internet through IPv6 and 6LoWPAN, making the Internet of Things Internet connection faster and safer. In February 2015, the Bluetooth Technology Alliance established the Bluetooth Smart Mesh Working Group to help standardize the mesh network capabilities of Bluetooth Smart technology.

Bluetooth Mesh technology

Before introducing Bluetooth Mesh technology, we must first understand what the Mesh network is. Wireless Mesh network (wireless mesh network), also known as "multi-hop (mulTI-hop)" network, consists of mesh routers (routers) and mesh clients (clients), where mesh routers constitute the backbone network, and wired internet The network connection is responsible for providing 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.

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 (both outdoor and indoor).

Bluetooth Mesh was born out of CSR Mesh, a proprietary protocol advocated by CSR. CSR Mesh is a new Bluetooth Smart solution launched by CSR in February 2014. 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.

CSR Mesh technology features called home automation

Feature 1: CSR Mesh consumes only a fraction of the power of Zigbee.

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.

Bluetooth Mesh smart home field beyond ZigBee?

The composition of CSR Mesh technology

Feature 2: Interlocking encryption function ensures information security

When it comes to the security performance of CSR Mesh technology, professionals point out that in such a home network composed of CSR Mesh, all data is encrypted using the AES algorithm, and the data transmission is also based on the classic The nested key exchange & encryption protocol Diffee-Hellman-Merkle runs. Whenever a new device wants to access the network, it needs to rely on the 128-bit UUID (Universal Unique Identification Number) 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. The device can obtain a unique networking key for communication.

Bluetooth Mesh smart home field beyond ZigBee?

The process of adding a smart light bulb to a CSR Mesh network

In addition to CSR, other vendors such as NXP have also launched Bluetooth Mesh solutions. NXP's Bluetooth Smart Mesh solution is different from other grid technologies that may be flooded and cause "broadcast storm" and increased energy consumption. NXP's low-power solutions fully synchronize and route various protocols for efficient end-to-end connectivity between nodes; innovative incremental energy efficiency improvements across the network; enhanced security and More functional network self-organizing capabilities, and in the future to protect the layered-mesh architecture to better support Bluetooth smart devices, which provide over-the-air wireless upgrade capabilities that can be deployed after deployment Network upgrade. NXP's solution enables developers and manufacturers to implement multi-node communication designs when developing smart home products, including lighting, sensors, thermostats and other home Bluetooth smart devices.

Qunsuo aims at providing our customers high cost-effective PDA Barcode Scanner. According to different customers requirements, we can provide Portable 1D Barcode Scanner PDA and 2D QR code scanner PDA. With the stable quality of our Handheld Android PDA, we gain many reliable customers, help many customers provide IT solutions. If you are also looking for PDA scanner, welcome to learn from us for more details.

pda barcode scanner

PDA Barcode Scanner

Pda Scanner,Pda Barcode Scanner Android,Android Pda Scanner,Pda Android Barcode Scanner

Shenzhen Qunsuo Technology Co., Ltd , https://www.qsprinter.com

This entry was posted in on