International Standard for wireless router protocols

There is no fixed standard for understanding the Wireless Router Protocol. Generally, the standard is IEEE 802.11g. Other content of the wireless router is described in detail later. In our contact, these standards have little impact on us.

Wireless Router Protocol Standard

Currently, wireless routers support the IEEE 802.11g Wireless Router Protocol and are backward compatible with 802.11b. First, we need to understand the meaning of this standard. IEEE, an international wireless standards organization, is responsible for developing standards for electrical and electronic equipment, test methods, raw devices, symbols, definitions, and test methods.

In the Wireless Router Protocol field, in addition to the above two protocols, there is actually an IEEE802.11a standard, but it is not popularized due to its poor compatibility. The IEEE802.11b And 802.11g standards are compatible. The biggest difference is that the supported transmission rate is different. The former can only support up to 11 M, while the latter can support 54 M. The new 802.11g + standard can support the wireless transmission rate of ipvm, and the transmission speed is basically the same as that of wired networks.

To sum up, if you build a wireless network with frequent data transmission and certain transmission rate requirements, it is the first choice to support the IEEE802.11g standard wireless router, you can choose products that support IEEE802.11b at a relatively low price.

Wireless Router-data transmission rate 

The Wireless Router Protocol is similar to the wired network. The transmission rate of a wireless network is the ability to receive and send data under certain network standards. However, in a wireless network, this performance has a great relationship with the environment. In wireless networks, data is transmitted through signals, and the actual use environment may interfere with transmission signals more or less.

The actual situation is that the actual transmission speed of the wireless LAN can only reach half of the nominal maximum transmission speed of the product. For example, the maximum theoretical speed of 802.11b is 11 Mb, in a good wireless network environment, it takes about 3 minutes to transmit MB of files. In the same environment, it takes about 30 seconds to transmit MB of files for 802.11g-supported products. Therefore, when purchasing a product, you should also consider floating Based on the transmission rate you need.

Wireless Router-signal coverage

That is, the "valid working distance" mentioned in the example router parameters is one of the important parameters of the wireless router. As the name suggests, it is only within the signal coverage of the wireless router, other computers can be connected wirelessly. According to the 300 standard, the maximum distance that a wireless router can reach is usually meters. However, the coverage scope depends on the environment, it is about 300 meters. If the transmission distance is between 35-50 meters in a semi-open space or area with obstacles, the transmission speed can reach one kilometer or even further with the help of an external antenna.

In addition, this depends on the gain performance of the antenna, depending on the gain performance of the TLWR642G + Wireless Broadband Router itself. The gain performance of the TLWR642G + Wireless Broadband Router depends on the performance. The TLWR642G + wireless router integrates wired and wireless network connections, complies with the IEEE 802.11G/B standard, and the antenna is detachable, space is reserved for future upgrades. "Indoor 100 meters, outdoor 400 meters" is also an ideal value, which varies with the network environment. Generally, indoor wireless signals can be better within the range of 50 meters, in general, the outdoor area can only reach-meters. The signal strength of a wireless router is also greatly affected by the environment.

Wireless Router-operating frequency

There is not much to say about this parameter because it involves some professional electronic knowledge. We can simply understand this: compare a wireless router to a daily communication tool-a mobile phone. The frequency of a mobile phone is generally between 800 MHz and MHz, the router operates more frequently than the mobile phone. The higher the frequency, the larger the bandwidth, but the worse the transmission characteristics!

Wireless Router-gain antenna

In a wireless network, the antenna can enhance the wireless signal, and can be understood as an amplifier of the wireless signal. The antenna has different radiation or reception capabilities for different spatial directions. The antenna has two kinds of directions: Full direction and orientation. Omnidirectional Antenna: in a horizontal plane, an antenna with no maximum direction of radiation and receiving is called an omnidirectional antenna. Because the omnidirectional antenna has no direction, it is usually used in the center of point-to-point communication. For example, if you want to establish a wireless connection between two adjacent buildings, you can choose this type of antenna.

Oriented antenna: one or more antennas with the maximum radiation and reception capacity are called oriented antennas. The oriented antenna is concentrated in energy, and the gain is higher than that of the omnidirectional antenna. It is suitable for point-to-point communication over a long distance, and has strong anti-interference ability due to its directionality. For example, if you need to establish a wireless connection across several buildings in a residential area, you can choose this type of antenna.

Wireless Router-body interface

A common wireless router generally has an RJ45 port that is a WAN port, that is, an interface connecting UPLink to an external network. The other two or four ports are LAN ports used to connect to a common LAN, there is a network switch chip dedicated to the exchange of information between LAN interfaces. Generally, the routing mode between the WAN port and the LAN of a wireless route generally adopts the NATNetwork Address Transfer mode. Therefore, a wireless router can also be used as a wired router.

Wireless Router-Supplement 

Wireless Router Protocol: In addition to the common parameters described above, you can also see the vro Processor type, memory capacity and other parameters on the product package.

1. Processor

A vro and a computer both contain a central processor CPU ). CPU is the core of a router, both in the Middle-end router and in the high-end router. Currently, the type of CPU commonly used in wireless routers is ARM9.

2. Memory

A vro has a variety of memory used for storage configuration, router operating system, and routing protocol software. Theoretically, the larger the vro memory, the better, however, the memory does not directly reflect the performance and capabilities of a wireless router. In addition, we can also see "Support for VPN, built-in firewall, built-in printing server, 64-bit and 128-bit WEP encryption" on the parameter table, these parameters vary according to product prices and positioning;

Some products also come with a USB interface. In terms of security, you should pay more attention to the encryption types supported by the product. The more types supported, the higher the security guarantee. At the same time, the more features supported, of course, its performance and price will be higher, and the specific selection needs should also be determined based on their own reality.

Wireless Router Protocol: comprehensive understanding of the packaging and functions of wireless routers. in a home or small office network, wireless routers are usually directly used to achieve centralized connection and Internet sharing, because the wireless router has both the aggregation and connection functions of the Wireless AP. Next we will take D-Link A wireless router DI-624 + A as an example, introduce the function configuration and specific settings of the wireless router.