Wireless networking scheme, large scale wireless network construction

Wireless ad hoc network is a special self-organizing, peer-to-peer, multi-hop, wireless mobile network, it does not need the existing infrastructure, has the characteristics of temporary networking, fast, no control center, strong anti-destruction, etc., has broad application prospects in military and civil and civilian aspects, but because wireless ad hoc network technology involves wireless communication and software data routing knowledge, there is a high technical difficulty at home and abroad independent research and development of manufacturers relatively few, most of them just buy modules to do secondary integration. At present, some of the more influential foreign manufacturers include DOMO, whose products are relatively mature, and Meshcom, a domestic manufacturer of independent software and hardware design, have done a relatively complete job and have strong development and customization capabilities.

Three floors, 50 laptops, 20M bandwidth for the external network. It is recommended that you can try the cable wifi solution to do wireless coverage. It allows the use of switches.

Moreover, the performance of the related products of this solution can be extended to 4G and 5G signals. The cost of construction is not high. The coverage is also uniform and there are no dead ends.

This is very simple, you need two switches, both of which support PoE power supply, 8 ports are enough, 6 APs per layer, there is no dead end at all, but if you want to really have no dead end, you must have three switches, which is a little more costly. To reduce costs, there are a total of 9 APs in the three layers, with three APs in each layer.

What should we pay attention to when planning a large wireless network? Next, I will talk in detail about the issues that need to be paid attention to when deploying enterprise wireless networks.

Costs vs. transfer costs.

The first thing to solve when deploying an enterprise wireless network is your mindset, setting up an enterprise wireless network is not as simple as pulling a cable and plugging in a wireless route, and at the same time, don't be deterred by its high cost compared to SOHO products. At present, enterprise wireless network products are still a thing that is not seriously commoditized, more like a technology-oriented, R&D cost is higher and the user group is less disruptive innovative products, manufacturers sell a full set of solutions after analyzing user needs and integrating product lines, it is normal to be high.

Signal strength. Many people think that the greater the wireless strength, the more powerful it is, but this view is actually wrong. Because many devices and APs are in the same frequency band, there will be mutual interference when the power is very high, and the National Committee of Non-compliance has also made provisions for the power of indoor wireless products not to exceed 100 milliwatts. In view of this situation, it is recommended that when building a wireless network, the power of the AP should not be adjusted to the maximum, but should be adjusted to a medium level, so as to avoid interference between devices in the same frequency band, and when the AP is damaged, the surrounding APs can automatically adjust the power upwards to cover the coverage of the damaged AP.

Seamless roaming. Seamless roaming is the first problem to be solved in enterprise wireless networks, and it can basically be solved very well. Taking medical treatment as an example, as long as all the application systems based on mobile diagnosis and treatment vehicles, PDAs, laptops and other equipment running, such as electronic medical records, mobile nursing systems, mobile ward rounds systems, etc., can be moved at will under the wireless signal coverage, and there will be no need to log in again, the problem of data loss, and the normal network transmission speed can meet the basic requirements of the hospital.

Security is also one of the most concerned issues for users, in fact, in our opinion, the security of wireless networks is not so fragile, but the "user management" is fragile, most of the security problems may be caused by the user's erection, improper use. Security is divided into two aspects, one is network security, mainly manifested in encryption, authentication, etc., through the wireless controller can do a variety of encryption authentication methods, can completely solve the danger that the internal network is not accessed by illegal terminals. The second is application security, which is mainly manifested in the impact on other peripheral devices, which can be avoided by adjusting the power of the AP or using different frequency bands.

A system that is simple to manage will not only keep your network in good shape, but it can also significantly reduce maintenance costs.

1. WLAN, that is, WIFI networking, is suitable for small fan shooting, because the AP power of WIFI is generally small, and the coverage radius of the source in the open field is not very large, which is suitable for some small-scale wireless coverage. The frequency of wifi is not limited, the equipment is simple to set up, the supporting requirements are few, the construction time is fast, and there are more terminals, so it is more convenient to set up.

2. Wimax, a carrier-class network, is suitable for large-scale private network users and can provide a kilometer-level coverage radius. The equipment adopts carrier-grade equipment, with a relatively high degree of professionalism in erection, more supporting equipment in response to the needs, and a relatively long construction period. The advantages are wide coverage, stable business, and relatively high rate.

If you can't use a relay, you can try to install an enterprise-level wireless router with a high-power outdoor antenna in the office, and then buy a device at home that can rub the Internet for free (that is, a wireless network card with better acceptance), which should be usable, but the rate will definitely not be too high.

ps If the above equipment is laid in the past, the investment is too high, and it is better to run a broadband at home than to search in a mess.

Generally, if the outdoor wireless network is not very far away, it can be built with AP, and if the distance is relatively far, it is necessary to use the feeder to mark the family higher. But what you said is not very clear, so I don't know what the plan you need is very clear.

There are many outdoor wireless LAN solutions, which can be built using wireless APs or wireless routers.