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IEEE802.11 and ieee802.11b standards, can easily increase the wireless LAN load capacity and reduce the total cost.The wireless network of 80,000 People stadium project is divided into two parts: wireless network backbone bridge part and wireless network indoor and outdoor coverage part. The backbone bridge part uses the wireless network Bridge and the directional antenna completes the wired network the extension, the covering part includes Shanghai
The RF signal of the radio transmitters output is transmitted to the antenna via a feeder (cable) and radiated out by the antenna in the form of electromagnetic waves. ElectromagneticWhen the wave arrives at the receiving location, it is received by the antenna (only a small fraction of the power is received) and sent to the radio receiver via the feeder.Therefor
The combination of Wireless AP and wireless route is essential for network construction. For an enterprise, it is possible that a wireless LAN cannot be fully covered. It is especially important to combine Wireless AP and wireless router devices. This article provides a detailed introduction to this problem. Due to work requirements, there is now A need for both Departments A and B to connect wireless networks at the same time, but the employees of the two departments cannot access work informat
. The signal scattering from the center to the surrounding area is used. Therefore, an omnidirectional antenna is used in the selection of the antenna to facilitate signal transmission in all directions so that all directions can receive the signal. The antenna that receives wireless signals at the edge must adopt a targeted
Currently, wireless dual-network technology is also popular. How can we build a complete network? The following articles describe the technical aspects of home applications. The dual-AP function is not a dual-antenna function. In order to facilitate wireless internet signal reception and provide efficient and unobstructed wireless signal transmission, wireless manufacturers have launched wireless router devices that support dual-
network services are discovered through various means, we will analyze the test data and parameters to determine the cause of the problem and take appropriate measures to optimize the network. 1. common hardware faults: (1) Adjustment of base station coverage When the signal in the base station coverage area is poor, you can increase the coverage range by raising or downgrading the antenna height, checking the an
feature can be used as two wireless router devices, with this wireless router device, we can quickly and effectively build A secure wireless dual-network to ensure that the Network in Room A is separated from the network in room B. Dual-AP function AP wireless router is not dual-antenna Function In order to facilitate wireless internet signal reception and provide efficient and unobstructed wireless signal transmission, wireless manufacturers have la
Eliminate misunderstanding: the more wireless route antennas, the better the signal? (1) A strange consumption habit exists in the daily consumption behaviors of most consumers. when the price is almost the same, consumers prefer products with a "large quantity. In addition, the phenomenon of follow-up is also very serious. Many facts did not go to the research, and they took the plunge. "I will buy more products if I buy more products ". Fans of the "Car god party" and "heavy doors" are the mo
There are very few FM searching machines. This problem should be divided into two categories, Category 1: If you manually adjust each station, you can hear clear radio stations. You only need to change the stop threshold of the station The number of search sites has increased, Another type: manually adjust to a radio station with poor signal, and compare it with the FM of the brand mobile phone, it is found that the FM effect is obviously worse than that of the brand mobile phone, for example, t
previous generation of wireless devices do not need to worry that existing devices will be eliminated. In terms of security, D-link dwl-g122 supports Wi-Fi Protected Access (WPA), provides the necessary security protocols and tools to provide confidential communications to you and other wireless users, such as access to sensitive information or dynamic encryption of data transmission. WPA authenticates users by automatically changing the secret key within a regular interval. Second, Lei ke NW
Today's home routers usually bring a few antennas, long, the appearance is not good-looking, but most users like, think has the antenna router launch out of the signal will be very good, even in the home more remote corner, mobile phone show WiFi signal is also full, that is to wear a wall effect is very good, is this? The first thing we need to sort out is the weak WiFi signal for routers and mobile phones. Because the mobile phone's main function
different periods. 2. 3G Wireless network optimization process From the experience of domestic CDMA network optimization and the experience of 3G operation in foreign countries, the optimization process of 3G network can be started from following several stages. (1) Verification A Verify all information related to wireless in the database: including site coordinates, structure type, antenna position, antenna
This question has been waked N times again... sad reminder ~~ A lot of small details or something! This is thinking power !! Snail bait! Fast crawling!Time Limit: 1000 MS (C/C ++) Memory Limit: 65536 K (C/C ++)Problem DescriptionA long time ago, an ant was walking on the road one day and suddenly saw a snail, crawling slowly. AlthoughAlthough it is smaller than it, but it runs faster than it, So Ant wants t
wall blocking between them, especially the reinforced cement wall of the load-bearing wall ). We know that in order to reduce the radiation to the human body, the power of the wireless router is generally not large, so the capacity is subject to interference from nearby electronic devices during use, therefore, when setting the placement of wireless routers, we must remember to stay away from microwave ovens, refrigerators, and other household appliances. A good
interference from nearby electronic devices during use, therefore, when setting the placement of wireless routers, we must remember to stay away from microwave ovens, refrigerators, and other household appliances. A good antenna is also an effective way to ensure the wireless transmission distance and Stability of routers. Some high-end wireless routers use dual antennas, generally, multi-antenna products
Why do we need to close the network line?The key to ensuring the security of wireless access points is to prohibit unauthorized users from accessing the network. That is to say, a secure access point is disabled for unauthorized users. Ensuring the security of wireless networks is much more difficult than ensuring the security of wired networks. Because the wired network only has a limited number of fixed access points, and the wireless network can be connected from any point in the range permit
place the antenna in a relatively large area, and the distance from the battery is also far enough. HW also requires the id not to place any gold accessories near the antenna. We can imagine that the manufacturing cost of a mobile phone with a built-in antenna is 20-25% more expensive than that of a mobile phone with an external
communication protocol operation. The MAC address is expressed in three bits, that is, eight devices can be addressable in one micro-network (the number of connected devices is actually unlimited, but only eight devices can be activated at the same time, one of them is primary, and seven are slave ). Figure 1 shows the topology of a Master/Slave Device in the micro-network. In addition, the Bluetooth system supports point-to-point communication to form a distributed network, that is, one master
power of the wireless router is generally not large, so the capacity is subject to interference from nearby electronic devices during use, therefore, when setting the placement of wireless routers, we must remember to stay away from microwave ovens, refrigerators, and other household appliances. A good antenna is also an effective way to ensure the wireless transmission distance and Stability of routers. Some high-end wireless routers use dual antenn
than ensuring the security of wired networks. Because the wired network only has a limited number of fixed access points, and the wireless network can be connected from any point in the range permitted by the antenna. Design antenna placement The first step to keep the Wireless Access Point Closed is to place the antenna correctly, so as to limit the semaphores
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