Networking Mode and Application Mode of WiMAX technology

The full name of WiMAX is Microwave Access for global intercommunication Worldwide Interoperability for Microwave Access). After combining this technology with Microwave devices that require authorization or authorization-free, the broadband wireless market will be expanded to improve the recognition of enterprises and service providers. WiMAX is the 802.16 standard, or Broadband Wireless Access to Broadband Wireless Access, BWA standard ). It is a wireless MAN (WMAN) technology. It is a new air interface standard for microwave and millimeter wave frequencies. It is used to connect 802.11a Wireless Access hotspot to the Internet, or connect the company and the home environment to the wired backbone line. It can be used as a wireless extension technology for cables and DSL to achieve wireless broadband access.

WiMAX Overview

WiMAX technology based on the 802.16 standard has been controversial since it was initially proposed by some vendors such as Intel and oviton. However, with the addition of international giants such as Motorola, Lucent, Cisco, Nortel Network, Fujitsu, Huawei, ZTE, and other domestic network communication giants, the development prospects of WiMAX are bright. This technology is based on the IEEE 802.16 series of broadband wireless standards. Like the Wi-Fi Alliance that was able to improve the usage by 802.11, WiMAX also set up a forum to raise public awareness of the potential of broadband and urge suppliers to solve device compatibility problems, to accelerate the utilization of WiMAX technology, WiMAX technology has become the industry standard for using IEEE 802.16 series broadband wireless devices.

With the development of mobile communication technology and broadband technology, WiMAX has become one of the hot topics of worldwide telecom operators and equipment manufacturers. The development of technology has brought more and more multimedia applications into people's lives, and the services provided by operators have also changed. However, from the practice of the current network, a large number of multimedia applications cause huge consumption of existing mobile network resources, far exceeding the relevant income increase. Therefore, it is of great significance for operators to effectively reduce the cost per bit to better meet user needs while ensuring the service quality. WiMAX is such a very promising application.

In the future, networks will surely have the following features: IP, broadband, more cost-effective, and easier network management. In addition, multiple technologies are integrated through a unified core network, seamless switching between services. WiMAX is a metropolitan area network wireless access technology developed under the general trend of telecom network convergence. The WiMAX core network adopts the Mobile IP architecture and can seamlessly integrate with the entire IP network. The WiMAX core network can meet QoS requirements of different services and applications and effectively utilize end-to-end network resources. The core network is scalable, scalable, flexible, and robust, and can meet telecom-level networking requirements. It has advanced mobility, it includes paging, location management, switching between different technologies, and switching between networks of different carriers. It also provides security assurance and QoS Assurance in Full-mobile mode.

WiMAX is a broadband access technology that uses wireless methods instead of wired to achieve "last mile" access. The advantage of WiMAX is that this technology integrates the mobility and flexibility of WiFi wireless access technology and the high bandwidth characteristics of traditional cable-based broadband access technologies such as xDSL, its technical advantages can be summarized as follows: long transmission distance and fast access; large system capacity; extensive multimedia communication services; in addition, in terms of security assurance, interoperability and application scope, wiMAX also has a big advantage. Allow them to bypass copper or cable facilities and extend their access network by using more flexible and cheaper wireless connections. WiMAX is a technology based on the IEEE 802.16 standard, NLOS non-line-of-sight (NLOS), and point-to-point multi-point technology. It is specially developed for broadband wireless access and return, with a data throughput of up to 70 Mbps, the transmission distance is up to 50 kilometers.

WiMAX Networking Mode

By analyzing the characteristics of WiMAX technology, we can see that WiMAX is widely used. In summary, WiMAX technology is mainly used for broadband wireless access for integrated services based on IP data, the specific working mode is a bit more flexible and fast for Multi-Point broadband wireless access, point-to-point broadband wireless access, and cellular networking.

WiMAX technology is diverse in application modes

1. On-Demand Broadband: 802.16a wireless technology allows service providers to complete network deployment within a few days and supply services at a rate comparable to that of Wired solutions, thus saving a lot of costs. It also supports instant on-demand high-speed connections for temporary activities such as exhibitions.

2. Cellular return: 802.16 stable bandwidth makes it an ideal choice for transmitting Back-to-Back traffic of cellular base stations in point-to-point configuration.

3. Community Broadband: fill in gaps in Cable and DSL coverage. The actual limitations make Cable and DSL technologies unable to reach many potential broadband users. This situation will change with the advent of 802.16a-based standardized systems.

4. Underdeveloped areas: wireless Internet Technology Based on the IEEE 802.16 standard is a natural choice between underdeveloped rural areas and remote areas with low population density.

5. Optimal wireless connection service: IEEE 802.16e is based on the 802.16a extension and introduces the nomadic) capability, enabling users to maintain full-time connections while roaming away from home.

Point-to-Point Broadband Wireless Access

Point-to-point applications can adapt to fixed, nomadic, and portable modes. WiMAX will be the most competitive alternative in areas where xDSL or Cable access is difficult to cover. WiMAX is less affected by distance and community user density than DSL and other wired access methods. WiMAX can be considered as an alternative solution for some areas that are difficult to cover by DSL or Cable access methods; wiMAX can make full use of the flexibility of rapid deployment for some temporary gathering places, such as exhibitions and sports venues. This is especially suitable for future application in Olympic Games, wiMAX features shorter deployment cycles and greater flexibility than DSL or Cable access.

Point-to-Point Wireless Broadband Access

Point-to-Point wireless broadband access is mainly used for point-to-point wireless backhaul and relay services. Point-to-Point wireless broadband access not only greatly extends the WiMAX network coverage, but also provides wireless relay transmission for the carrier's 2G/3G network base stations and WLAN hotspots. It can also be used for the remote connection and access of enterprise networks.

WiMAX uses OFDM technology to effectively combat multi-path interference. At the same time, it uses adaptive coding and modulation technology to achieve a compromise between coverage and transmission rate. In addition, it also uses Adaptive Power Control, the transmit power can be dynamically adjusted based on channel conditions. So that WiMAX has a larger coverage and a higher access rate. For example, when the channel conditions are good, you can adjust the modulation method to 64QAM and adopt a channel code with higher encoding efficiency to improve the transmission rate. The maximum transmission rate of WiMAX can reach 75 Mbit/s; when the channel transmission conditions are poor and the base station cannot establish a connection based on 64QAM, you can switch to 16QAM or PSK modulation and adopt channel coding with lower coding efficiency, in this way, the transmission reliability and coverage can be improved.

Honeycomb networking

WiMAX base stations can form a cellular network similar to existing GSM/CDMA networks. Systems Based on the IEEE 802.16e standard can provide stable and high-quality mobile voice services and high-bandwidth mobile data services. When deploying a wireless access network in a large area, you can use the wireless connection Between WiMAX base stations to extend the network coverage. Leveraging the low cost per bit feature of WiMAX, it provides convenient and economical mobile broadband wireless services for handheld terminal users.

Conclusion: WiMAX Outlook

For 3G, WiMAX is a rising star. It adopts 802.16 technical standards and is a new type of long-distance broadband wireless network technology. It is applicable to densely populated urban areas and can be well applied in rural areas or urban suburbs at a low cost. As a result, it is well known that Proxim, Intel, Proxim, and other vendors are close to me. Optimistic about the market prospects of WiMAX, Motorola also plans to provide integrated action solutions, not only compatible with 3G, Wi-Fi and WiMAX technologies, but also plans to support possible versions of these technologies in the future, the company believes that WiMAX may initially emerge in the United States, just as Intel was pushing the Wi-Fi solution trend, and is expected to expand to Asia Pacific and Europe.

WiMAX broadband wireless access technology provides a good platform for the construction and application of broadband wireless access systems by virtue of its high access rate, wide coverage, and support for mobility. The market demand for mobility is growing. People want to connect to the Internet anytime and anywhere for communication, entertainment, and various information. As promoted by the WiMAX Forum, WiMAX products based on the IEEE 802.16 standard will soon enter the market.

In the future, WiMAX Applications will bring new network life experiences to end users. Using WiMAX broadband wireless access, each household can enjoy over 25 MB of broadband application services. Everyone can enjoy the joy of information anytime, anywhere. WiMAX will bring a huge breakthrough in the broadband wireless communication field. At the same time, with the development and maturity of technologies and standards, WiMAX will also have great room for development in the future wireless communication industry. The development of WiMAX takes some time and requires the support of various organizations, enterprises and the market. We believe that WiMAX technology will surely dominate the market and our daily life in the future.

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