I. Introduction to MESH
Mesh wireless self-organizing network system is a mobile broadband multimedia communication system designed with the new concept of "wireless grid network". All nodes of the system can realize the real-time interaction of multi-media information such as multiple voice, data and image sturding with the distributed network architecture of no center-based self-networkundering under the condition of non-view distance and fast movement. At the same time, the system supports any network topology, each node device can move quickly at random, the system topology can be updated quickly without affecting the system transmission, the overall system deployment is convenient, flexible, simple to operate, easy to maintain.
Second, the advantages of the system
No central network, can be flexible deployment, no room and transmission network and other infrastructure support, can set up arbitrary network, through multi-hop relay network, and thus expand coverage.
Private network, wireless transmission link without any link charges or traffic charges.
Support hierarchical grouping and roaming networking to expand system communication capacity.
With the frequency hopping function, effectively improve anti-jamming, anti-tracking ability, the introduction of digital filtering function, effectively suppress the remote interference. At the same time, the ARQ transmission mechanism is adopted to reduce the loss rate of data transmission and improve the reliability of data transmission.
Data transmission supports non-differentiated transmission of various business data. Broadband transmission capabilities to support multimedia services such as clear voice, broadband data and hd video.
Images have adaptive adjustment capabilities to fully guarantee the continuity and smoothness of data, video and other businesses.
COFDM technology, anti-multi-path ability.
With dual antenna, antenna 1 and antenna 2 support TDD dual-yield, which transmits/received diversity.
Third, the application field
Wireless Mesh self-organizing network system can meet the large-scale activity security patrol, urban anti-terrorism stability command, emergency rescue command and dispatch, fire emergency communication command, ship formation shore and sea exchange and other complex communication needs, widely applicable to the police force, fire, electricity, oil, water conservancy, forestry, radio and television, medical, water and air communications and other sectors.
Fourth, the characteristics of the system
No center with frequency self-organizing network
Mesh wireless self-organizing network system for no center of the same frequency system, all node status peer-to-peer, single frequency point support with TDD two-way communication, frequency management is simple, high spectrum utilization. Any node device can be used in the network as an end node, relay node, or command node. A wireless communication network can be quickly established at any time, anywhere, without relying on any other fixed communications network facilities (e.g. fiber optics, copper cables, etc.). All centerless self-contained network equipment, including outdoor fixed station, car mount and single-man portable station, can automatically form a wireless mesh network, real-time communication between each other.
High reliability
Wireless Mesh self-organizing network mobile base station using military standard design: with easy to carry, durable, waterproof and dustproof, applicable in a variety of harsh environments, quickly deployed to meet the communication needs of the emergency site. A traditional WLAN network will not be able to access the WLAN network if an AP uplink fails. Wireless Mesh has self-organizing, self-healing, and other features, so the AP nodes in the Mesh network often have multiple available links, which effectively avoids a single point of failure.
Strong mobility
The occurrence of emergencies has a great deal of uncertainty, and the scene of the event is fickle, so according to the occurrence of the emergency, according to local conditions to set up the site temporary portable base station is very necessary. On-site portable base station is temporary, it is established with the scene, with the end of the event and withdrawal.
Fast-track
How to grasp the real-time dynamic information of the scene of the incident in a timely, accurate, fast and in-depth manner plays a vital role in the ability of commanders at all levels to make correct judgments and make determination to fight. Wireless Mesh self-organizing network high-performance portable base station, the use of single-frequency network, and strive to maximize the simplification of field configuration and modernization difficulty, to meet the first-line combatants in emergency conditions for the rapid network construction and zero configuration requirements.
Non-view distance transmission (NLOS)
NLOS configuration can be easily realized by Mesh self-networking technology, its automatic relay characteristics can easily achieve over-the-horizon transmission, the signal can automatically select the best path to constantly jump from one node to another, and eventually reach the target node without direct view distance. Key technologies for addressing the "last kilometre" problem in various areas.
Fast movement of high data bandwidth
The peak data bandwidth of the Mesh wireless self-organizing system is 28Mbps. Nodes have non-fixed mobile transmission capabilities, and fast movement does not affect high data bandwidth services, such as voice, data and video services are not affected by rapid changes in system topology and terminal high-speed motion.
Security and confidentiality
The system also has group encryption (working frequency point, carrier bandwidth, communication distance, network mode, MESHID, etc.), channel encryption and source encryption and other encryption methods, dedicated to the network, can effectively prevent illegal equipment intrusion and transmission of transmitted information is intercepted and cracked, to ensure a high degree of network and information security.
V. Introduction to the composition of the system
MESH-based platform BF-MR910B/BF-MR920B
THE MESH BASE STATION IS MAINLY DEPLOYED AT FIXED POINTS. The device transmits power, covers the distance of the pass, especially suitable for the application scene such as long-range coverage pass-through, information aggregation backhaul, area coverage support, commanding height enhancement coverage and relay relay transmission node.
Technical parameters
MESH portable station BF-MR902P/BF-MR910P
MESH portable station can be quickly deployed, good mobility, easy to mobile network, mainly deployed in mobile vehicles, ship carriers and carrying, to achieve front-end mission site and rear command center of remote real-time coordination. At the same time, it can be equipped with the BF-TR925 series portable relay station, as the BF-TR925 series portable relay station data link access to the backbone of emergency communication system. Ideal for field front-end command, regional emergency communications, fleet/fleet self-group communications, security patrols, mobile monitoring and mobile relay transmission and other applications.
Technical parameters
MESH handheld BF-MR901H
THE MESH HANDHELD DEVICE IS SMALL AND PORTABLE. Wireless expansion and extension as a base platform or portable platform node, can facilitate the in-depth emergency scene or dense crowd, high-definition video and other multimedia information back to real-time, so that the command staff can intuitively control the scene situation in real time. The equipment is suitable for a variety of applications such as team local co-operation/pre-work, interconnection of high-rise or underground areas within buildings, dense crowds, and hidden work needs.
Technical parameters
MESH modular BF-MR902M
MESH communication module, can be equipped with BF-TR925 series portable relay station, as a fixed station or vehicle node wireless extension and extension, can facilitate deep into the emergency scene or dense crowd, high-definition video and other multimedia information back to real-time, so that the command staff can intuitively control the scene situation in real time. At the same time, as the BF-TR925 series portable relay station data link access to the backbone of emergency communication system.
Technical parameters
MESH Void BF-MR925mS
THE MESH ON-BOARD MODULE IS SMALL IN SIZE, LIGHT IN WEIGHT, LOW IN POWER, LONG BATTERY LIFE, AND IS EQUIPPED WITH A DRONE. As a MESH high-altitude node, ultra-long-range relay can be achieved with less power, overcoming the influence of ground network due to terrain, buildings, etc. By combining with supporting equipment, it can realize the functions of high-altitude camera transmission, flyer distribution, material delivery and so on.
Technical parameters
Six, network case
Chained mesh mesh mesh
Hybrid networking