Chengdu Shuangxin Electronics newly introduced Extricom interference-free WLAN system, which is the first to propose interference-free wireless technology. Wireless local area network architecture, this breakthrough progress is called "the next generation of enterprise-level Wi-Fi". Extricom's WLAN architecture allows enterprises to deploy their own high performance and high scalability, which is not inferior to the new generation WLAN of traditional wired networks. Moreover, enterprises can load all applications including data, voice and video into the wireless network, which ensures the overall performance and security. In addition, the deployment and maintenance of Extricom WLAN system is greatly simplified compared with the traditional WLAN system.
Extricom system is suitable for all kinds of wireless users, such as telecom operators, government, finance, education, medical care, hotels, industrial and mining enterprise parks, etc. Whether in increasing capacity, supporting mobile voice, or providing effective services for diversified user groups, it can be easily owned with the help of Extricom system, and has made great progress in excellent performance.
1.1. Extricom solution technology and networking architecture
Chengdu Shuangxin Electronics Co., Ltd. fully abides by IEEE82.11a/b/g/n standard, and specially introduces Extricom interference-free WLAN system to solve the problems encountered by traditional cellular WLAN system, and puts forward "ultra-thin" AP networking architecture and "channel coverage" technology.
the "ultra-thin" AP networking architecture adopts the mode of wireless switch+"ultra-thin" AP networking. Different from the "thin" AP networking architecture, the wireless switch not only centrally deploys and manages the security and mobility, but also centrally manages the media access control (MAC) in the whole coverage area, which completely eliminates the data transmission conflict between APS, so that all APS in this area can work together on the same wireless channel without interference. The "ultra-thin" AP networking architecture has completely changed the traditional wireless LAN deployment mode based on cellular architecture, and the channel coverage has eliminated the problem of inter-channel interference, so there is no need for complicated RF(RadioFrequency) cellular planning. At the same time, the wireless terminal can really use each wireless access point AP at any time, the transmission bandwidth of each wireless terminal in the wireless system can be effectively guaranteed, and the network delay and jitter caused by wireless roaming can be completely eliminated.
at the same time, the "ultra-thin" AP networking architecture also eliminates the complexity of the traditional cellular wireless architecture when the network expands and the network architecture changes. In fact, when networking through the "ultra-thin" AP architecture, we only need to consider which locations need wireless services and the strength of wireless signals, and then install the "ultra-thin" AP and connect the wireless switch to realize "plug and play" network deployment and adjustment.
users expect portability and mobility that traditional networks do not have, and wireless service quality is the most direct experience for them. What they need is a safe and open wireless network, which has no delay and jitter, provides high-speed bandwidth, and enjoys the comprehensive application of data, voice and video. At the same time, the deployment and maintenance of the network must be as simple as possible. WLAN system based on "ultra-thin" AP architecture and adopting channel coverage technology is undoubtedly the most ideal choice.
2. Extricom interference-free wireless coverage solution
Extricom solution is a unique interference-free wireless coverage solution, providing users with an industry-leading wireless network that is easy to deploy, interference-free, high-capacity and easy to maintain.
2.1. Interference-free channel overlay network
The solution of p>Extricom system is based on the centralized WLAN architecture, in which the switch completely controls the data packet transmission on the wireless network. In this configuration, the access point (AP) has only radio function, but no software, storage function, MAC or IP address. Even the association basis is different: the client is directly associated with the switch, not the AP. The role of AP is similar to "RF channel", which can quickly collect the communication traffic between the client and the switch.
centralized deployment of p>Wi-Fi environment allows you to deploy 82.11a/b/g/n channels on each AP to create overlapping "channel coverage". The bandwidth of the channel is provided across the coverage service area (that is, the comprehensive coverage of all APS connected to the switch), maintaining anti-interference operation and consistent capacity from beginning to end.
within the coverage of each channel, the switch allows APS to transmit in the same channel at the same time only if they do not interfere with each other, so as to avoid co-channel interference.
in the channel coverage architecture of the Extricom system, because each terminal is associated with a wireless switch, not any wireless AP, the wireless terminal does not care how many wireless APS exist in the whole channel coverage, but only knows that the wireless channel being used is available in the whole channel coverage area. At the same time, because all wireless APs work in the same channel, multiple APs will receive uplink data sent by wireless terminals at the same time. As the final result, after receiving multiple copies of data sent by the same terminal, the wireless switch will dynamically select the best copy based on the data packet and discard the other copies.
when the wireless terminal roams within the coverage area of the channel, different wireless AP in the best position will be selected for data transmission with the wireless terminal at different times. The wireless switch's optimization of the uplink and downlink paths of the wireless terminal in the background is transparent to the wireless terminal, so the wireless terminal does not need to perform any handover operations (such as de-association and re-association) when roaming between APS, thus providing a truly seamless roaming for the wireless terminal.
generally speaking, the solution of Extricom system abandons the traditional performance limitations caused by RF cellular planning, co-channel interference, edge users, rate adaptation, and frequent roaming between mixed b/g/a/n devices and AP.