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What is A Mesh Network?

Mesh Network means that the networking mode of the network devices is mesh. It consists of multiple nodes connected to each other, each of which can act as a router or relay, sending and receiving signals. It can realize multi-hop communication between nodes, so that data can be transmitted between different nodes. 乙very two devices can communicate with each other. In the field of the Internet of Things, 紫蜂, Bluetooth and Wi-Fi are the current mainstream wireless interconnection technologies, and these three technologies can be mesh networking.

根據 維基百科, it is a local network topology in which the infrastructure nodes (IE. 橋樑, 開關, 和其他基礎設施設備) 直接連接, 動態且非分層地連接到盡可能多的其他節點，並相互協作以有效地將資料從客戶端路由到客戶端.

How Mesh Network Works?

When a node needs to send data to another node, it will first find the target node according to the predetermined routing information. If there is no direct connection between the two nodes, the data can be transmitted to the destination node via multi-hop communication between multiple nodes. Each node forwards the data to the next node until the data reaches the destination node.

Brief History of Mesh Network

Its history dates back to the early 1970s, when the U.S. Defense Advanced Research Projects Agency (DARPA) developed packet wireless networks that sought to wirelessly replicate ARPANET (the precursor to the current Internet). These networks used bulky, low-throughput radio equipment manufactured by Hazelnut, and laid the groundwork for the long-term.

In the early 1990s, academics and researchers in commercial LABS began experimenting with laptops equipped with wireless cards to create mobile AD hoc networks (MANets). Over the next decade, with the rapid development of 802.11 (無線上網) 科技, this led to a great deal of interest in the development of mesh networking protocols, some of which are still standards on the Internet Engineering Task Force today. Subsequently, social networks consisting of WiFi routers or custom devices began to be called mesh networks. The dot-com boom at the turn of the millennium saw the birth of several mesh networking companies geared towards home reach extensions, last-mile connectivity and city-wide networks.

Elements of Mesh Network

The basic elements of Mesh Networking include:

• Node: represents a computer that can run programs and process incoming and outgoing packets through filters.
• Link: Analog network interfaces, such as UDPLink for LAN broadcasting, or IRCLink for Internet connectivity.
• Filter: Similar to iptables, it controls the incoming and outgoing traffic of nodes and supports stateful filtering.
• Program: A user-defined thread that has methods for sending and receiving data.

All of these components run in separate threads and communicate via queues, ensuring efficient concurrent operations.

The Advantages of Mesh Network

It realizes wireless literally and seamless connection. 自身優勢使其極具競爭力. 優點包括:

Cost Effective

大面積覆蓋範圍內較少的電線可以節省更多成本.

Faster Connection & 跑步

安裝的節點越多, 您的無線網路變得越大、越快. 無線網狀配置可讓本地網路運作得更快, 因為本地資料包不必返回中央伺服器.

廣泛適用性

他們依賴相同的 WiFi 標準 (802.11一個, b 和 g) 已適用於大多數無線網路.

高可靠性

當無線訊號間歇性受阻時, 網狀網路將進行調整以找到清晰的訊號.

更聰明

網狀網路可以自動將新節點整合到現有結構中，無需網路管理員進行任何調整. 它會找到最快、最可靠的路徑來傳送數據, 即使節點被阻塞或失去訊號.

易於擴展

Mesh networks don’t require additional routers. 反而, 每個節點都充當路由器. 這意味著您可以快速輕鬆地更改網路大小, 使網路具有極強的適應性和可擴展性.

The Drawbacks of Mesh Network

Although Mesh network is a brilliant networking mode, it still have some disadvantages:

• High routing complexity: The routing algorithm is complex and needs to process more routing information because multi-hop communication between multiple nodes is required.
• Large transmission delay: Due to the need for multi-hop communication through multiple nodes, the transmission delay can be large, especially under high load conditions.

The Applications of Mesh Network

The future of the upcoming Internet of Things age lies in ubiquitous connectivity among objects. The rising number of perishable IoT devices applied in various occasions and the increasingly complex IoT ecosystem create a surged unfilled requirements for Bluetooth Mesh.

Cities & Municipalities

With BLE mesh networking, cities can connect citizens and public services over a widespread high-speed wireless connection.

Campus

Many colleges, universities and high schools are converting their entire campuses to BLE mesh networking. This solution eliminates the need to bury cables in old buildings and across campuses. With dozens of well-placed indoor and outdoor nodes,everyone will be connected all the time.

衛生保健

Mesh nodes can sneak around corners and send signals short distances through thick glass to ensure access in every operating room, lab and office. Doctors and caregivers maintain and update patient information,test results, medical history, even insurance information on portable devices carried from room to room.

款待

High-speed internet connectivity at hotels and resorts has become the mule, not the exception. Mesh networks are quick and easy to set up indoors and outdoors without having to remodel existing structures or disrupt 商業.

Temporary Venus

Construction sites can capitalize on the easy set-up and removal of wireless mesh networks. Architects and engineers can stay wired to the office, and Ethemet-powered surveillance cameras can decrease theft and vandalism, Mesh nodes can be moved around and supplemented as the construction project progresses.

倉庫

There is simply no effective way to keep track of stock and shipping logistics without the types of Ethernet-enabled handheld scanners used in modern warehouses. Wireless mesh networks can ensure connectivity throughout a huge warehouse structure with little effort.

Mesh Network vs Traditional Networks

Mesh networks connect the infrastructure nodes in an easy, effective and wireless way, 使用廉價的, 現有技術. 讓每個物體進入物聯網成為可能.

傳統網路依靠少量有線接入點或無線熱點連接用戶和設備. In this wireless network, the network connection stretches among dozens or hundreds of wireless mesh nodes that communicate to each other to share the network connection across a large area.

網格以不同的方式工作. 沒有中心樞紐,處理所有計算機流量的交換器或計算機. 反而,each device on the mesh network can talk to every other device. 它使用一種特殊的協議將資訊從一個地方移動到另一個地方. 這些多個中繼可以快速引導跨裝置的流量. 這創建了一個網格狀的連接模式.

Differences Among Mesh Network, WSN and Ad-hoc Network

In addition to Bluetooth Mesh vs. Private Mesh, Mesh networks, Wireless Sensor networks (WSN), and ad hoc networks are three different types of networks that differ in structure and application:

結論

綜上所述, 網狀網路是物聯網專案的理想基礎設施, 因為它們提供了額外的靈活性，允許它們在路徑損壞或設備故障的情況下運行. This wireless network is bound to become more and more practical, 徹底讓IoT時代向前邁進. 無線網狀網路的未來應用僅受我們的想像力的限制. 地雷 invites you to explore the next.

常問問題

Is mesh network better than WiFi?

It is generally better for larger or more complex environments where consistent coverage, 可靠性, and scalability are key priorities. Traditional WiFi is suitable for smaller spaces or simpler needs, offering fast speeds and an affordable solution.

Is mesh a LAN or WAN?

A mesh network can be either a LAN (Local Area Network) or a WAN (Wide Area Network), depending on how it is implemented and the scale of the network.

Which is better, mesh or extender?

If your needs are minimal, an extender might suffice, but for larger homes, 辦公室, or areas with high device usage, it will provide superior performance and coverage.

Are Mesh Networks Safe to Operate?

Comparing with other network, every node are connected with each other, not just point to point in Mesh network.

How Expensive is a Mesh Network?

In general, the system is more expensive than other alternative. Also the cost is depended on the coverage and the scale.