network management system. The base station and the client are composed of an outdoor unit (a microwave transceiver and an antenna) and an indoor unit (modem), which is connected by an air interface. LMDS is operated in a bit multiple access mode, similar to a microwave, but unlike a traditional microwave, lmds can form a cellular network operation.The LMDS working band has 24GHz, 28GHz, 31GHz, 38GHz and 40GHz. In the United States, LMDs uses a band of 27.
can not meet the growing business needs, so IEEE in 1999 has launched a 802.11b, 802.11a two standards. And at the end of 2001 through the 802.11G Trial hybrid scheme, which can achieve 54Mbps data rates in the 2.4GHz band, and compatible with the 802.11B standard.
802.11b work in 2.4GHz ISM (industrial, technical, medical) band, using direct series spread spectrum and complement keying, can support 5.5Mbps and 11Mbps two kinds of speed, can with the rate of 1Mbps and 2Mbps 802.11 DSSS (direct
Denial of interference to solve the biggest problem with Wi-Fi802.11 technology has grown dramatically over the last 10 years – faster, more powerful, and more scalable. But one problem still haunts Wi-Fi;There is nothing more than users complaining about Wi-Fi performance is not stable, coverage is not good, often drop the network manager to crash. Addressing Wi-Fi, an invisible and changing environment, is really a problem. and radio frequency interference is also a culprit.RF interference com
it works in both 2.4Ghz and 5Ghz unlicensed bands.When a 802.11 client device hears other signals, whether or not the signal is a WiFi signal, the device will suspend the transfer of data until the signal disappears. Interference in data transmission can result in packet loss, forcing WiFi to retransmit data. Retransmission results in decreased data throughput and a pervasive impact on users sharing the same AP.While the spectrum analysis tools are n
Over the past decade, 802.11 technology has made great strides----faster, stronger and more scalable. But there is a problem in the troubled Wi-Fi: reliability. for network administrators, the most frustrating for them is that users complain about the poor Wi-Fi performance, the coverage is not stable, often drop the line. Dealing with a Wi-Fi environment that you can't see and change frequently is a tricky problem. The culprit of this problem is radio frequency interference. almost any device
6GHz, for short-range wireless communication, Officially designated as the successor of 802.11N, the other is 802.11AD, working in 60GHz, market positioning and UWB similar, mainly for home entertainment equipment. At that time, however, the 802.11AC standard had not even entered the draft stage. The new draft standard was expected to be available by the end of 2011 and will eventually be completed by November 2012.
The difference between 802.11AC and 802.11n
From the core technol
ar5009 802.11a/G/n WiFi adapter
Atheros ar9285
Broadcom 4310-series (in Alibaba Dell laptops)
D-Link airplus g DWL-G510 wireless PCI adapter (driver version 3.0.1.0)
Dell 1510 wireless n adapter, Broadcom version, with broadcom_bcm43xx_5.60.18.8_win6x.exe from http://wikidrivers.com/wiki/Broadcom_BCM43xx_5.60.18.8
Intel 5100/5300 (with latest drivers from Intel's site, version 13.0.0.107, 64bit systems only)
Ralink rt2870 (in memory 802.11n USB dongles)
RealTek rtl8187b (win7 driver ver.1178)
R
article takes the router produced by Belkin International as an example. Similar routers manufactured by other companies are widely used in today's networks. Their setup process is very similar. Some methods recommended in this article apply to such devices. Note: vrouters with old styles or low prices may not provide the same functions.
2. Secure vro name
You can use the Configuration Software of the manufacturer to complete this step. The name of t
With the unveiling of the fifth-generation wireless standard 802.11ac 5G WiFi, more and more manufacturers are deploying gateway, adapter, router, PC and other related products.
Especially in the router field, network parts, buffalo, Belkin, Asus, Cisco, Huawei, D-LINK and other equipment manufacturers have launched the relevant routers, products cover home, soho office, enterprise application scenarios, products related to ZTE, ruijie, and tengda are
RT2870 drivers, version 3.0.9.0;
24 Incompatible Wireless Card
Belkin F5d7050uk;
Belkin Wireless G MIMO devices (as of version 3.1.2.0);
D-link AirPlus G dwl-g122;
Gigabyte ga-wpkg 802.11g;intel 3945/4965;
2200BG (most Intel cards, unfortunately);
MAC Book;
Builtin Broadcom devices;
Realtek RTL8187 (like in older 802.11BG USB dongles);
Zydas ZD1211 (also in 802.11BG USB dongles);
Intel (R) Wirel
Driven
Download
Linksys wusb600n (Dual-band USB adapter)
a/b/g/n
ralink_usb2870
Download via Mypeek
Belkin f5d8013 (Wireless N Notebook Card)
b/g/n
ralink_cardbus2860
Download via Mypeek
Belkin f5d8073 (Wireless N ExpressCard)
b/g/n
ralink_cardbus2860
Download via Mypeek
Wireless card based on MarvellMarvell has devel
of high speed can only be achieved under the 5Ghz band)Another: Some people may say, my home bandwidth is limited, 54M is enough to use, high bandwidth is useless, in fact, I said, those are only negotiated rate, the actual use of the entire wireless system throughput, delay or even signal, may be due to different negotiation speed, even if your home only 6 m broadband, It's likely that after you switch to a high-end wireless card and a relatively go
WLAN.8.1.1 Frequency and Channel1, the general Wireless frequency band can be divided into: industrial, scientific and pharmaceutical ism Wireless band.2, 802.11 can work in the ISM band at 2.4GHz or 5GHz, and a 802.11n device can define the bands it can run.3, in the 5GHz band, all channels are non-overlapping.Establishment of 8.1.2 sessionTwo main types of wireless networks:
Infrastructure netwo
dual-concurrency 3x3:3 MIMO 802.11n wireless AP. Provides high-performance and secure wireless access to your business. Airtight embedded the industry-leading wireless intrusion prevention WIPS technology in C-60.It is a complete set of enterprise wireless network security solutions that perfectly block wireless network threats - 7x24wips Wireless protection without additional cost . C-60 is the ideal choice for the enterprise. It enables different applications to run on separate networks whil
interfere with the normal use of wireless routers. In particular, part of the digital cordless phone use of 2.4GHz band, so that when the network is unstable through the wireless router to replace a signal transmission band is a good way.
Set the method as shown in the following illustration:
▲ Frequency Bands Division
As can be seen from the above figure, this router can simultaneously provide 2.4ghz/5ghz dual-band wireless signal!
2.4GHz ISM band, and the total data transmission rate is designed as 2mbit/s. Communication between the two devices can be done in a device to device (ad hoc) manner, or in coordination with the base station (base station, BS) or access point (Access Point,ap). In order to obtain good communication quality in different communication environment, the hardware communication mode of CSMA/CA (Carrier Sense Multi access/collision) is adopted.
In 1999, two additional versions were added: 802.11A def
: handled the "Static IP" internet broadband business users, broadband operators to provide a network cable to the user's home, but also provides an IP address, subnet mask, gateway, 2 DNS server address to the user, when not using the router, you need to plug this network cable on the computer, and set the IP address on the computer according to the IP address information provided.
View and record static IP addresses on a computer
Static IP Internet settings: Select "Static IP (Et
processor disk, and a telephone disk.Signal after the interface network adapter processing, sent to the front-end transceiver system, and then sent by the microwave transmission line to the user transceiver, receiving signal in the network interface unit after processing to the user terminal set-top box, PC, telephone and so on. This is the downlink operation, and the client information sent out, through the uplink line, its operation is the opposite.MmdsMulti-channel microwave distribution S
infrared transmission in the 2.4GHz ISM band, and the total data transmission rate is designed as 2mbit/s. Communication between the two devices can be done in a device to device (ad hoc) manner, or in coordination with the base station (base station, BS) or access point (Access Point,ap). In order to obtain good communication quality in different communication environment, the hardware communication mode of CSMA/CA (Carrier Sense Multi access/collision) is adopted.
In 1999, two additional ver
The expands the standard physical layer, requiring the layer to use a 5GHz band. The standard adopts OFDM modulation technology, there are "12" non-overlapping transmission channels, the transmission rate range is 6mbps-54mbps. However, this standard is incompatible with the IEEE802.11B standard. Wireless APs and wireless cards that support the protocol are less common in the marketplace. ieee802.11g This standard altogether has "3" a not overl
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.