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1. Mesh Introduction

A mesh wireless ad hoc network system is a mobile broadband multimedia communication system designed with a new concept of a “wireless mesh network”. All nodes of the system can realize real-time interaction of multimedia information such as multi-channel voice, gegevens, and images under non-line-of-sight and fast-moving conditions, using a distributed network architecture without a central ad hoc network. Tegelijkertijd, the system supports any network topology structure, each node device can move quickly and randomly, and the system topology can be updated quickly without affecting the system transmission. The overall system is convenient to deploy, flexible to use, simple to operate, and easy to maintain.

2. Mesh System advantages

• There is no central networking, which can be flexibly deployed on demand, without infrastructure support such as a computer room and transmission network, and can set up networking arbitrarily.
• The private network is dedicated, and the wireless transmission link has no link cost or traffic cost.
• Support hierarchical grouping and roaming networking to expand system communication capacity.
• With frequency hopping function, it can effectively improve anti-interference and anti-tracking capabilities; the introduction of a digital filtering function can effectively suppress remote interference. Tegelijkertijd, the ARQ transmission mechanism is adopted to reduce the loss rate of data transmission and improve the reliability of data transmission.
• Data transparent transmission supports undifferentiated transparent transmission of various business data. With broadband transmission capability, it can support multimedia services such as clear voice, broadband data, and high-definition video.
• The image has self-adaptive adjustment capability, which fully guarantees the continuity and fluency of data, video-, and other services.
• Adopt COFDM technology and strong anti-multipath ability.
• Using dual antennas, antenne 1 and antenna 2 support TDD dual transmission and dual reception, and can transmit/receive diversity.

3. Mesh Application areas

The wireless Mesh self-organizing network system can meet various complex communication needs such as large-scale event security patrols, urban anti-terrorism, and stability command, emergency rescue command and dispatch, fire emergency communication command, and ship formation shore-to-sea intercommunication. It is widely used in police, brand, macht, petroleum, waterbesparing, forestry, radio en televisie, medical, water and air communications, and other sectors.

4. Mesh System Features

Centrumloos co-frequentie ad-hocnetwerk

Mesh draadloos ad-hocnetwerksysteem is een niet-centraal co-frequentiesysteem, alle knooppunten hebben dezelfde status, een enkel frequentiepunt ondersteunt TDD tweerichtingscommunicatie, frequentiebeheer is eenvoudig, en het spectrumgebruik is hoog. Elk knooppuntapparaat kan als eindknooppunt worden gebruikt, relaisknooppunt of commandoknooppunt in het netwerk. Een draadloos communicatienetwerk kan op elk moment en op elke plaats snel tot stand worden gebracht, zonder afhankelijk te zijn van andere vaste communicatienetwerkfaciliteiten (zoals optische vezels, koperen kabels, enz.). Alle niet-centrale co-frequentie zelforganiserende netwerkapparaten, inclusief vaste buitenstations, op voertuigen gemonteerde stations, individuele draagbare stations, enz., kunnen automatisch een draadloos mesh-netwerk vormen en in realtime met elkaar communiceren door ze aan te zetten.

Hoge betrouwbaarheid

Het draadloze Mesh ad hoc netwerk mobiele basisstation gebruikt het militaire standaardontwerp: het is draagbaar, duurzaam, waterbestendig, en stofdicht, geschikt voor diverse ruwe omgevingen, en kan snel worden ingezet om te voldoen aan de communicatiebehoeften van noodlocaties. In een traditioneel WLAN-netwerk, als de uplink van een AP uitvalt, alle clients op het toegangspunt hebben geen toegang tot het WLAN-netwerk. Wireless Mesh heeft de kenmerken van een zelforganiserend netwerk en zelfherstel. daarom, AP-knooppunten in het Mesh-netwerk hebben meestal meerdere beschikbare links, waarmee een single point of fail effectief kan worden vermeden.

Sterke mobiliteit

Het optreden van noodsituaties brengt grote onzekerheid met zich mee, en de evenementenlocatie is wispelturig, dus afhankelijk van het optreden van noodsituaties, het is noodzakelijk om ter plaatse tijdelijke draagbare basisstations op te zetten, afhankelijk van de lokale omstandigheden. The field portable base station is temporary, it is established when the scene is present and withdrawn when the event is over.

Rapid deployment

In the face of emergencies, how grasp the real-time dynamic information of the incident scene in a timely, accurate, rapid, and in-depth manner plays a crucial role in whether commanders at all levels can make correct judgments and determine combat determination. The wireless Mesh ad hoc network high-performance portable base station adopts single-frequency networking, striving to simplify the on-site configuration and deployment difficulty to the greatest extent, and meet the requirements of front-line fighters for rapid network construction and zero configuration under emergency conditions.

Transmissie zonder zicht (NLOS)

The NLOS configuration can be easily realized by using the Mesh ad hoc network technology, and its automatic relay feature can easily realize over-the-horizon transmission. distance from the target node. Key technologies to solve the “last mile” problem for various fields.

High data bandwidth for fast movement

The peak data bandwidth of the Mesh wireless ad hoc network system is 28Mbps. Nodes have non-fixed mobile transmission capabilities, and fast movement does not affect high data bandwidth services, such as voice, gegevens, and video services, which are not affected by the rapid changes in system topology and the high-speed movement of terminals.

Security and confidentiality

The system also has various encryption methods such as grouping encryption (werkfrequentie, carrier bandwidth, communication distance, networking mode, MESHID, enz.), channel encryption, and source encryption. Information is intercepted and cracked, ensuring high security of the network and information.