【 Weak current College 】 resolution Wi-Fi eight technology of the future

Previous IEEE802.11n wireless specification will be officially approved and is not a finished, but rather an innovative wave wi-fi new starting point. In the future of 3 to 5 years, wi-fi experience will and now completely different.

11n in function of the huge increase on-300Mbps data rates and near 100M to 150Mbps throughput — will lay the foundations for an ever wider range of the wireless task and life Foundation. You can add a number of high speed painted, AP perform wireless convergence of the archipelago, it will become increasingly expanding, with mesh networks cluster mode phase of convergence, and resolved more smart Wi-Fi clients expand more seamless interoperability. Here, our primary attention to could change the future of eight technology wi-fi, function will become better and better signal quality, more secure, bandwidth convergence more optimization, longer battery life, network more secure.

1. wider broadband

Although the IEEE has completed for 802.11 specification and-Gigabit, Gigabit data rates launched two projects, but have yet to develop a first draft.

However 11n specification has become high data rate, and may apply to different functions and equipment. Now, all 11n RF supports two spatial data flow, you can use the same 2 or 3 antennas to send and receive function of combination is complete, the RF has had to move out now with. For example, Apple's new Wi-Fi function iPodTouch with a Broadcom radio chip that supports 11n but did not use 11n.

Soon, more Wi-Fi chips will support three or even four streams of data, classify 450Mbps and 600Mbps two different data rate. Quantenna communications 2009 year, demonstrates its 4x4 chipset, you can transmit a few road House high-definition TV signal.

"While also not many clients with can support 4 space stream, but the appropriate design of AP can use 600Mbps data rate physical layer enables high-speed, wireless backbone to be able to," wi-fi equipped with manufacturers of jointly create a Ruckus and CTOWilliamKish said.

We can use the 802.11s standard (gauge resolution in September 2010) to mesh networks linking these high-end node, set up a similar Internet Wi-Fi network, the network is redundant, and you can bypass the trouble spots to pick a route.

2. more robust RF signal

Future radio chip will appear more optional function for 11n client and the AP, the RF signal more compliance, continuity and secure. In other words, will make wireless convergence more like Wired interface.

"New 11n physical layer technology makes wi-fi more robust, in a given range and a longer interval has a higher data rate," chip manufacturers of Atheros Communications Inc. CTOWilliamMcFarland said.

These functions include: low density parity error correction coding, improves; emission beam forming ability, can be obtained from wi-fi client response so that an AP more focused as the client sends radio signals; space-time (STBC) you can use multiple antennas to better improve the signal of secure, improved data transfer rates.

"Now, when you carry a notebook around a building is aware, circling the data transfer rate is suddenly subsides," McFarland said. "But there is a convergence will STBC, is fixed. ”

3.wi-fi of networking

In-power maintenance some innovative not only makes wi-fi Smartphone's battery time competence extends, and also can be embedded into all kinds of new wi-fi equipped even sensor: for example, medical monitoring equipment, building control system, timely location tag tracking and consumer electronics. This allows people to have to continue to monitor and collect data, using this ability would be based on the user's identity and location of the users of temperament-services.

"Contemporary no finite interval of RF technology can achieve wi-fi can do things," wireless consulting expert and head of the United States the NetworkWorld "blog network-CraigMathias wrote.

"Enterprise WLAN that toes schema already in place," said of McFarland Atheros. "Have to do is to add some low-power sensor. ”

Wi-fi embedded manufacturers SummitData communication recently claimed that have various combinations of format 802.11A/802.11b/802.11g RF may permit the use of not jam is equipped in the 5 GHz band. Gainspan's new enterprises provide a 11bgwi-fi RF, there brought IP software stack, using the standard battery is a task for a few years of low-power wireless sensor. While RedpineSignals companies also can provide single-stream 11n RF of embedded.

4. Security

The Internet is one of the most harmful effects of the Internet has become the victim of threats, these threats include identity thieves, DOS attacks, privacy disclosures, spy ware and lack of trust. Move-a to let this situation worse, because convergence transportation users increasingly wi-fi exposed in the unacceptable risks under threat.

Trapeze Networks, Chief Strategic Officer MatthewGast thought, IEEE has recently endorsed 802.11w specification, you can maintain wireless maintenance frame for better implementation of RF link. Today, one wi-fi clientYou can perform with the MAC address of the AP fraud attacks, accept and follow the resulting generated a "separate network" information, this specification will be completely 11w broken network convergence.

Aruba Networks act as strategic marketing MichaelTenefoss said: ordinary, wi-fi with identity-based security, will provide the user with more secure wireless freedom. In Wi-Fi network, security strategy and the user, and no AC machine port. The benefit is that users can place on families, tasks, hotel, branch organizations, and to move freely between public hotspot, without compromising safety, Tenefoss said.

5. integration with other Wi-Fi network

Suppose you're T-Mobilewi-fi users, but at another operator of a Wi-Fi hotspots within the scope of the cover, you're out ofluck. In the future, your Wi-Fi equipped with will be able to query the "strange (i.e. other carriers)" service, you can use these services, assuming that you can then safely to the other carrier's network. Your mobile phone user can also be moved together with you to ensure that you can enjoy a variety of Wi.

This can include multiple networks together, in clusters add the wireless user activity range of competence is resolved to the completed 802.11u specification, and external network interconnection. In the future, various wi-fi operators will advertise their services, and you link to these services need to abide by the terms of service. By your network operator for a home user, you can access another carrier of all or part of the service. An emergency, you can use a group-wide narrow toes convergence and service. 11u specifications measure will be decided at the beginning of 2010.

6. self maintenance of Wi-Fi client

Wi-fi manufacturers have developed a number of patented products, so that users have become more intelligent, can know what they are and the convergence of AP. Today, the AP typically marks the Wi-Fi network maintenance limitations, because the client is in an RF relative thin maintains a vacuum.

Suppose that with the new norms wi-fi maintenance agreement for the client and the AP added intelligence function, so both sides can occur between the many humorous collaboration.

Imagine that your notebook computer's wireless adapter might yours wi-fiVoIP phone can send and receive RF signal with power-saving function; perhaps in a shared location data, an AP can redirect a wi-fi voice to an optimal neighbor; perhaps in an AP is overloaded to throw off the NET doesn't work when you can move to adjacent load of AP. For example, Wi-Fi network toes schema can also be positioned client in outdoor locations, then by data suppression may permit it to the network.

Very capable in 2010 July that there are a lot of 802.11vspecification content can dramatically improve Wi-Fi. It will add to the collection of statistical data of the counter array, add power maintenance to extend battery usage time, improved support for positioning data. However, this specification is required on the client and the AP Radio both complete.

Wi-Fi Alliance are developing Wi-Fi multimedia access control specification will address the relevant client collaboration concept. This specification will allow wireless network implementation consulting, maintenance liumei understand things, even in the same AP on begged HD video services and never looking back occlusion wi-fi voice user interface. Wi-Fi Alliance is still under evaluation a Wi-Fi network maintenance specification, this is to use multiple related IEEE specifications and some additional maintenance functions back.

7. make use of more intelligent RF maintenance improvement moving of

Lack of collaboration can be said in the tormented RF maintenance, because the AP and client general terms are rarely aware of each other's situation perhaps wireless neighbor, therefore cannot understand their respective RF environment. Such unilateral nature allows the optimization and maintenance of radio-frequency becomes very difficult.

For example, when a separate from an AP wi-fi mobile phone, it will enter a destination to find another AP process. But suppose the client can examine your AP, "your neighbor has one, which is my AP next convergence of best pick?" Then the client and the network can collaborate better. At the same time, wi-fi access points will also be able to "see" the client of the RF environment to confirm that the weaker the signal or bad cover up, and then take the methods on the interface implementation optimization.

IEEE802.11k RF resource maintains specification announced last year, is to understand summary of the questions, but manufacturers have completed wi-fi understand summary this questions a number of patented products. They are expanding their client on wi-fi control, and add their intelligence, collaborative and wi-fi access point toes schema begged, behavior, and activities. Aruba has unveiled the AdaptiveRadioManagement2.0 technology is an example.

At the same time, Wi-Fi Alliance also are using certain functions, 11k drafted a VoiceEnterprise certification specification. The purpose is to optimize large-scale, enterprise-class wi-fi voice call quality in the environment.

8. the individual regional wi-fi

Now, "your" wi-fi is a point-to-point connection between AP and, in future, you can enter any wi-fi individuals equipped so as to be able to direct and other client interface. For example, producing a OzmoDevices low-power chip, you can allow externalEquipped with a direct resolution wi-fi and notebook computer interface.

The former will Wi-Fi Alliance has just unveiled the wi-fiDirect (WFD) project will permit notebook Wi-Fi network directly, bypassing the AP and the wireless printers, cameras, projectors, plasma display panel sensor may be linked. As an industry standard, the WFD will introduce a new agreement by the firmware is complete without changes to the hardware what to do.

At the same time, the resolution 802.11z specification (estimate 2010 July), wi-fiAP will also enable the interface to be capable of P2P. In this configuration, clients have from an AP begged direct attached to another nearby client is equipped with an "allow", rather than have to go through the AP. But assuming that your client is still connected to the AP, in safety and maintenance service of the full maintenance.