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Как ще я няма?
има си е мобилността. Напиши в гуугъл WiMAX vs 3G. Само за сравнение ще кажа, че цената за Херц, която се плаща при УайМакс е 1000 пъти по-ниска от тази за 3Г, пък и първят ще се сравнява с интернет доставчиците, докато МТел няма да предложи интернет за 30лв. месечно 
Re: Как ще я няма?
Е не е вярно това... При WiMAX имаш някво покритие, което е фиксирано и се ограничава до територията, покривана от една access point. При мобилните мрежи може да си цъкаш навсякъде, в различни клетки, различни оператори и си имаш покритие, което не прекъсва, защото има роуминг, хендоувър и т.н.
Ето какво казват Ериксон за мобилността:
"Mobility in a public telecommunications network is no unequivocal concept. We differentiate between portability, movability and (complete) mobility.
Portability represents the simple case in which only the terminal is moved and then connected again at another point in the network. Movability implies that the subscriber moves his personal access; for example, when logging onto a data network from different network positions. Mobility refers to the state of complete ambulatory capability in which both the terminal and subscriber access can be moved, while the network automatically keeps track of all movement. In other words, this means both terminal and service mobility.
Mobility requires radio access via base (or radio base) stations. The physical access in a mobile network is arranged to enable a terminal to connect itself anywhere in the network and move about while a call is in progress. (Of course, the subscriber's subscription must be available at all access points.) This movability presupposes specially designed access ("cells" instead of connection points). It also requires that the terminal be able to maintain continuous radio contact with the network."
Не мисля, че WiMAX покрива тази дефиниция
Ето какво казват Ериксон за мобилността:
"Mobility in a public telecommunications network is no unequivocal concept. We differentiate between portability, movability and (complete) mobility.
Portability represents the simple case in which only the terminal is moved and then connected again at another point in the network. Movability implies that the subscriber moves his personal access; for example, when logging onto a data network from different network positions. Mobility refers to the state of complete ambulatory capability in which both the terminal and subscriber access can be moved, while the network automatically keeps track of all movement. In other words, this means both terminal and service mobility.
Mobility requires radio access via base (or radio base) stations. The physical access in a mobile network is arranged to enable a terminal to connect itself anywhere in the network and move about while a call is in progress. (Of course, the subscriber's subscription must be available at all access points.) This movability presupposes specially designed access ("cells" instead of connection points). It also requires that the terminal be able to maintain continuous radio contact with the network."
Не мисля, че WiMAX покрива тази дефиниция
Re: Как ще я няма? мислиш ли?
Ето прочети малко:
Monday, June 26, 2006
WiMAX Cell Phones Edge Closer to Reality
Power-saving chips are paving the way for super-broadband handheld devices.
By Kate Greene
WiMAX, the souped-up successor to the WiFi wireless standard, could greatly increase the amount of information that cell phones and other mobile devices can pull from the air. Until recently, however, the elaborate antenna technology needed for sending and receiving WiMAX signals has been a big drain on a mobile device's batteries.
Now that the telecommunications industry has settled on final specifications for WiMAX, though, including provisions for power efficiency, manufacturers are exploring ways to build the energy-efficient chips needed to make consumer WiMAX devices viable.
WiMAX-enabled handhelds would be able to access greater bandwidth than traditional cellular networks, allowing faster streaming media and Internet downloads. Moreover, WiMAX phones using Voice over Internet Protocol (VoIP) might drop fewer calls and keep working up to 50 kilometers away from base stations, compared with 16 kilometers for cellular networks and WiFi's mere 100 meters.
Some phones already come equipped with a WiFi chip and can access local WiFi hotspots in addition to cellular networks. But WiFi coverage is spotty -- while WiMAX signals beamed from central towers could blanket entire metropolitan areas. In addition, WiMAX signals can carry 70 megabits of data per second -- more than three times the roughly 20 megabits from WiFi, and far outperforming the 300 kilobits on cellular networks.
So far, only a handful of businesses in large U.S. cities are taking advantage of WiMAX technology, using equipment installed before the recent standards were finalized. In December 2005, the Institute of Electronics and Electrical Engineers (which created the WiFi (802.11) standard) agreed on technical specifications for mobile WiMAX. Now large companies, including Intel, Alcatel, and Qualcomm, are pushing to develop WiMAX-compliant base station and chipset technologies. Also, in the next few months, the WiMAX Forum, a consortium of companies making and deploying WiMAX equipment, will begin testing and approving mobile products, says Jeff Orr, the forum's director of marketing.
Like most chips for cell phones, WiMAX chipsets have two halves: one sends and receives radio signals, the other processes those signals. Sierra Monolithics of Redondo Beach, CA, specializes in making the radio-frequency portion of WiMAX chipset, which sends signals from the phone and receives them from a base station. By early 2007, the company expects to ship communications chipsets that extend the battery life of WiMAX handhelds into the same range as cellular devices, including the traditionally power-hungry dual-band phones used by international travelers.
Unlike cellular chipsets, which can access only a narrow band of the radio spectrum, often making downloads slower, WiMAX chipsets are designed to tune into and process broader swaths of the radio spectrum. Collecting and processing more of the radio spectrum requires more power, though, because more frequencies must be sorted through.
In addition, most WiMAX equipment uses antenna technology called MIMO (Multiple Input, Multiple Output), which uses more than one antenna to simultaneously collect and send more information greater distances, and power-hungry signal processing algorithms are needed to sort through the information collected via MIMO connections.
The power problem is even more formidable for manufacturers who want to build chips for multi-band WiMAX phone for use in different parts of the world. Each region, such as the United States and Asia, is setting aside a different portion of the spectrum for WiMAX, and accessing multiple bands usually requires a separate chip for each band.
Статията е взета от тук:
[линк][
А иначе Интел където отиде и настава революция, но за България мисля ще трябват 3 години (освен ако БТК, МТел и Глбул не запкупят малките WiMAX оператори)
otkacham]
Monday, June 26, 2006
WiMAX Cell Phones Edge Closer to Reality
Power-saving chips are paving the way for super-broadband handheld devices.
By Kate Greene
WiMAX, the souped-up successor to the WiFi wireless standard, could greatly increase the amount of information that cell phones and other mobile devices can pull from the air. Until recently, however, the elaborate antenna technology needed for sending and receiving WiMAX signals has been a big drain on a mobile device's batteries.
Now that the telecommunications industry has settled on final specifications for WiMAX, though, including provisions for power efficiency, manufacturers are exploring ways to build the energy-efficient chips needed to make consumer WiMAX devices viable.
WiMAX-enabled handhelds would be able to access greater bandwidth than traditional cellular networks, allowing faster streaming media and Internet downloads. Moreover, WiMAX phones using Voice over Internet Protocol (VoIP) might drop fewer calls and keep working up to 50 kilometers away from base stations, compared with 16 kilometers for cellular networks and WiFi's mere 100 meters.
Some phones already come equipped with a WiFi chip and can access local WiFi hotspots in addition to cellular networks. But WiFi coverage is spotty -- while WiMAX signals beamed from central towers could blanket entire metropolitan areas. In addition, WiMAX signals can carry 70 megabits of data per second -- more than three times the roughly 20 megabits from WiFi, and far outperforming the 300 kilobits on cellular networks.
So far, only a handful of businesses in large U.S. cities are taking advantage of WiMAX technology, using equipment installed before the recent standards were finalized. In December 2005, the Institute of Electronics and Electrical Engineers (which created the WiFi (802.11) standard) agreed on technical specifications for mobile WiMAX. Now large companies, including Intel, Alcatel, and Qualcomm, are pushing to develop WiMAX-compliant base station and chipset technologies. Also, in the next few months, the WiMAX Forum, a consortium of companies making and deploying WiMAX equipment, will begin testing and approving mobile products, says Jeff Orr, the forum's director of marketing.
Like most chips for cell phones, WiMAX chipsets have two halves: one sends and receives radio signals, the other processes those signals. Sierra Monolithics of Redondo Beach, CA, specializes in making the radio-frequency portion of WiMAX chipset, which sends signals from the phone and receives them from a base station. By early 2007, the company expects to ship communications chipsets that extend the battery life of WiMAX handhelds into the same range as cellular devices, including the traditionally power-hungry dual-band phones used by international travelers.
Unlike cellular chipsets, which can access only a narrow band of the radio spectrum, often making downloads slower, WiMAX chipsets are designed to tune into and process broader swaths of the radio spectrum. Collecting and processing more of the radio spectrum requires more power, though, because more frequencies must be sorted through.
In addition, most WiMAX equipment uses antenna technology called MIMO (Multiple Input, Multiple Output), which uses more than one antenna to simultaneously collect and send more information greater distances, and power-hungry signal processing algorithms are needed to sort through the information collected via MIMO connections.
The power problem is even more formidable for manufacturers who want to build chips for multi-band WiMAX phone for use in different parts of the world. Each region, such as the United States and Asia, is setting aside a different portion of the spectrum for WiMAX, and accessing multiple bands usually requires a separate chip for each band.
Статията е взета от тук:
[линк][
А иначе Интел където отиде и настава революция, но за България мисля ще трябват 3 години (освен ако БТК, МТел и Глбул не запкупят малките WiMAX оператори)
otkacham]
Re: Как ще я няма? мислиш ли?
Значи не ме разбираш... Няма смисъл повече да си пишем напразно... Все пак ето нещо от цитираното от теб:
"Some phones already come equipped with a WiFi chip and can access local WiFi hotspots in addition to cellular networks. But WiFi coverage is spotty -- while WiMAX signals beamed from central towers could blanket entire metropolitan areas. In addition, WiMAX signals can carry 70 megabits of data per second -- more than three times the roughly 20 megabits from WiFi, and far outperforming the 300 kilobits on cellular networks. "
Тва е идеята, тва се опитвам да ти обясня... WiMAX покрива повече от WiFi, но пак имаме мобилност само в областта на радиопокритие на антената. Докато при една PLMN мрежа мобилността е навсякъде, вкл. на територия на други оператори.
Технологиите са изключително различни, WiFI, WiMAX са безжичен аналог на усуканата двойка за абонатен достъп, не на методите за радиодостъп при мобилните мрежи.
"Some phones already come equipped with a WiFi chip and can access local WiFi hotspots in addition to cellular networks. But WiFi coverage is spotty -- while WiMAX signals beamed from central towers could blanket entire metropolitan areas. In addition, WiMAX signals can carry 70 megabits of data per second -- more than three times the roughly 20 megabits from WiFi, and far outperforming the 300 kilobits on cellular networks. "
Тва е идеята, тва се опитвам да ти обясня... WiMAX покрива повече от WiFi, но пак имаме мобилност само в областта на радиопокритие на антената. Докато при една PLMN мрежа мобилността е навсякъде, вкл. на територия на други оператори.
Технологиите са изключително различни, WiFI, WiMAX са безжичен аналог на усуканата двойка за абонатен достъп, не на методите за радиодостъп при мобилните мрежи.
Re: Как ще я няма? мислиш ли?
What is WiMAX technology?
WiMAX is a standards-based technology enabling the delivery of last mile wireless broadband access as an alternative to cable and DSL. WiMAX will provide fixed, nomadic, portable, and, eventually, mobile wireless broadband connectivity without the need for direct line-of-sight to a base station. In a typical cell radius of three to 10 kilometers, WiMAX Forum Certified™ systems can be expected to deliver capacity of up to 40 Mbps per channel, for fixed and portable access applications. This is enough bandwidth to simultaneously support hundreds of businesses with T-1 speed connectivity and thousands of residences with DSL speed connectivity. Mobile network deployments are expected to provide up to 15 Mbps of capacity within a typical cell radius deployment of up to three kilometers. It is expected that WiMAX technology will be incorporated in notebook computers and PDAs by 2007, allowing for urban areas and cities to become “metro zones” for portable outdoor broadband wireless access.
Source:
[линк]
Казват, че може да бъде в бъдеще. Мене ми стига да има клетки във всеки областен град, ще си запазя ГСМ-то само за планините, то като си на планина, гледаш природата, не думаш
WiMAX is a standards-based technology enabling the delivery of last mile wireless broadband access as an alternative to cable and DSL. WiMAX will provide fixed, nomadic, portable, and, eventually, mobile wireless broadband connectivity without the need for direct line-of-sight to a base station. In a typical cell radius of three to 10 kilometers, WiMAX Forum Certified™ systems can be expected to deliver capacity of up to 40 Mbps per channel, for fixed and portable access applications. This is enough bandwidth to simultaneously support hundreds of businesses with T-1 speed connectivity and thousands of residences with DSL speed connectivity. Mobile network deployments are expected to provide up to 15 Mbps of capacity within a typical cell radius deployment of up to three kilometers. It is expected that WiMAX technology will be incorporated in notebook computers and PDAs by 2007, allowing for urban areas and cities to become “metro zones” for portable outdoor broadband wireless access.
Source:
[линк]
Казват, че може да бъде в бъдеще. Мене ми стига да има клетки във всеки областен град, ще си запазя ГСМ-то само за планините, то като си на планина, гледаш природата, не думаш