News

Concept and Architecture

Mesh networking : usually refers to the use of two or more routers connected by wired or wireless means to form a mesh structure. Generally, there is a one-mother-many-child networking method, the wireless configuration information can be self-synchronized, and all nodes are relatively equal. However, in actual applications, the main router has certain special features in terms of connecting to the external network.

Mesh self-organizing network : It is a networking method that emphasizes autonomy and decentralization. The nodes in the network not only serve as access points for end users, but also as routers to forward data packets to other nodes, thereby building a dynamic, multi-hop, decentralized communication network with stronger node autonomy and network dynamics.

Application Scenario

Mesh networking : Mainly used in homes, offices and other places, it is used to solve the wireless network coverage problem in large apartments and multi-story buildings, providing users with a seamless roaming network experience and meeting daily Internet access, video entertainment, online office and other needs13.

Mesh self-organizing network : It is more commonly used in some special scenarios, such as military operations, emergency rescue, and field exploration. In these scenarios, a communication network that can be quickly deployed and flexibly expanded is required. Mesh self-organizing network can quickly establish a reliable communication link without infrastructure support to ensure smooth communication.

Network performance

Stability : Both Mesh networking and Mesh self-organizing networking have certain stability, but Mesh self-organizing networking is more resistant to destruction. In Mesh networking, if the main router fails, it may affect the external network connection of the entire network; while in Mesh self-organizing networking, since there is no central node, the failure of any node will not cause the paralysis of the entire network. The network can automatically re-plan the path to ensure data transmission123.

Transmission delay : Generally speaking, the transmission delay of Mesh networking is relatively low, which is suitable for applications with high latency requirements, such as online games and video conferencing. However, Mesh self-organizing networking uses multi-hop transmission, and data needs to be forwarded through multiple nodes, which may cause large transmission delays. However, in some emergency scenarios, its advantages of rapid deployment and flexible networking are more important.

Bandwidth allocation : Mesh networking can usually allocate bandwidth reasonably according to user needs and network conditions to ensure the network speed of each node. Mesh self-organizing networking pays more attention to communication reliability in complex environments. Bandwidth allocation is relatively flexible, but in high-load situations, insufficient bandwidth may occur.

Equipment Requirements

Mesh networking : Generally, you need to use a router that supports the Mesh function. These routers usually have good compatibility and ease of use. Users can complete the networking through simple settings. Mesh routers of different brands can also be mixed and networked, but there may be some compatibility issues.

Mesh self-organizing network : The requirements for equipment are relatively high, and they need to have stronger processing power, communication capabilities and self-organizing capabilities. Usually professional wireless communication equipment is used, such as handheld radios, car radios, etc. These devices need to support the corresponding self-organizing network protocols and algorithms to achieve efficient communication and networking.

Security

Mesh self-organizing network : Due to the particularity of its application scenarios, it has higher requirements for security. More stringent security measures are needed, such as encrypted communication, identity authentication, intrusion detection and defense, to prevent information leakage and network attacks.

Mesh networking : The security of the network is mainly ensured through the security settings of the router, such as encryption and access control. The security of the Mesh networking used in general homes and offices can meet daily needs.

Mesh self-organizing network solution

Mesh ad hoc network solution based on IEEE 802.11S standard

Features : IEEE 802.11S is a relatively complete Wi-Fi self-organizing network protocol standard, suitable for multi-route distributed Wi-Fi networking scenarios, such as enterprise networks, campus networks and other large-scale coverage scenarios. It has the advantages of cross-vendor compatibility, long-term evolution, complete functions, and decentralized data forwarding in home LANs. However, it is complex to implement, has high requirements on terminal capabilities, and has high development and maintenance costs. Therefore, there are not many products that use this standard at present1.

Application case : In some large enterprise parks or campuses, if you need to build a distributed wireless network and hope that the equipment of different manufacturers can achieve a certain degree of compatibility and interoperability, you can consider using the Mesh self-organizing network solution based on IEEE 802.11S. However, due to factors such as equipment cost and technical complexity, professional network engineers are required to plan and deploy.

Mesh self-organizing network solution based on WDS

Features : Wireless Distribution System (WDS) is a protocol for wirelessly connecting two access points. Mesh links based on WDS use four or three addresses, which is consistent with 802.11. The characteristics of its implementation scheme determine that Wi-Fi Mesh products based on WDS are easy to implement, have low terminal capability requirements, and are widely used in home wireless AP products. However, WDS also has some problems, such as the limitations of the three-address format and the interoperability and incomplete standardization caused by different implementation methods of various manufacturers, which still need to be optimized and solved1.

Application Cases : Suitable for home or small office environments where network performance requirements are not particularly high and where it is desirable to extend the wireless network coverage in a simple manner. For example, some users use the WDS function of a wireless router at home to extend Wi-Fi signals to cover areas with weak signals.

Mesh self-organizing network solution based on MAP

Features : MAP focuses on solving the interoperability issues between Wi-Fi Mesh products from different manufacturers based on the WDS protocol. In 2018, WFA released the MAP standard protocol for home network ad hoc networking and used it as the interoperability certification standard for WAF easy Mesh. MAP additionally specifies how to establish connections and exchange keys between APs, thereby solving the compatibility issue 1.

Application case : In a home network, when users want to use wireless routers of different brands or models that support the Mesh function to build a Mesh network, they can choose products that support the MAP standard to ensure that the devices can work well together and achieve functions such as seamless roaming.

MESH wireless ad hoc network system solution

Features : Adopting a distributed network architecture without a center, all nodes can realize real-time interaction of multi-channel voice, data, images and other multimedia information under non-line-of-sight and random fast-moving conditions. The system has the characteristics of high data bandwidth, fast movement, strong anti-interference, full IP networking, support for multiple services, centerless same-frequency self-organizing network, and anti-destruction disaster tolerance, etc. 3.

Application cases : In the field of emergency medical communications, such as in hospitals, for instant communication between 120 ambulances and hospital staff, daily inspections by hospital security personnel, emergency calls to nurse station personnel in wards, and inter-departmental communication in hospitals, it can effectively solve communication blind spots, shielding interference, and other problems, and ensure timely transmission of information.

433 Module Mesh Self-organizing Network Solution

Features : This solution uses 433 modules with built-in networking protocols, which can realize self-organizing networking, serial port transparent transmission, support point-to-point star mesh networking, anti-collision, data encryption, one-key networking and other functions. It has the advantages of high data encryption security, anti-collision to ensure that a large number of modules communicate at the same time without data loss, and fast communication speed. 5.

Application cases : It can be used in scenarios where large spaces require relays, such as smart villas and smart factories, and can replace Zigbee networking for various IoT applications.