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WiMAX Opportunities and Challenges in a Wireless World
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【名称】：WiMAX Opportunities and Challenges in a Wireless World
【作者】：Prepared by: Michael W. Thelander
Signals Research Group, LLC
【格式】：DOC
【页数】：21
【语言】：英文
【摘要或目录】：
Over the last two years there has been a fair amount of hype and confusion surrounding WiMAX
(Worldwide Interoperability for Microwave Access), the trade name given to a group of wireless
technologies based on the IEEE 802.16 standard. Unfortunately, this hype and confusion has
resulted in raising the bar to such a high level that it will be very difficult for WiMAX to live up to
expectations, despite potentially achieving a lot.
Further, because expectations have been raised to such a high level, in particular regarding the
mobility aspect of WiMAX, there is a tendency to compare WiMAX with 3G-based cellular
technologies and reach the conclusion that WiMAX will compete with 3G or even replace it.
The reality of WiMAX is somewhat different, although the technology can still fulfill a valuable
role in the wireless ecosystem.
WiMAX is a credible solution to a number of problems that have plagued the fixed wireless
industry since its inception - namely, the lack of an open standard and the absence of major
silicon vendors and equipment suppliers. Once WiMAX certified equipment is available from a
number of suppliers, increased competition can occur, and with volumes of units shipped, more
attractive price points can be reached.
The cost to
deploy a carrier
If WiMAX continues to gain more support from the industry, it can also provide broadband
grade WiMAX radio
access in remote regions and developing parts of the world where basic voice or broadband
access network is
access using fixed line service is not economically feasible. Additionally, WiMAX can potentially
approximately on par
be used to provide backhaul in cellular networks or it can be used to significantly enhance the
with that of a 3Gperformance of public Wi-Fi (Wireless Fidelity) hot spots by increasing the throughput in the
radio access networkbackhaul network and by making it easier and more economical to deploy Wi-Fi access points.
and far more
expensive than a WiMAX is also developing a "mobile" standard which is not compatible with the fixed-based
solution. The "mobile" standard theoretically means that WiMAX can provide broadband wireless
typical Wi-Fi network.
access in a vehicular environment. While technically this feature can be achieved [with some
very important caveats that are further detailed in this paper], the business case for such a
service offering is more challenging, while it will only have marginal impact, at best, on the
growth and usage of 3G services. Publicly accessible Wi-Fi spots are already widely available,
especially in highly desirable locations such as hotels, airports and college campuses. Wi-Fi hot
spots are also increasingly available for free to consumers as a service differentiator from
restaurants and coffee shops and as a free public service from local municipalities.
Additionally, by the time the mobile version of WiMAX is available in user equipment in high
volumes from a number of suppliers, advanced 3G data networks using 1xEV-DO and HSDPA
will be available extensively from a well-established ecosystem. In order for WiMAX to
successfully compete in the mobile environment, it will need to offer something more compelling
than the 3G/Wi-Fi combination can offer and/or it will need to offer the same level of service for a
more attractive price.
Due to technology agnostic factors, such as site acquisition and preparation costs, not to
mention power requirements, both RF and electrical, the cost to deploy a carrier grade WiMAX
radio access network is approximately on par with that of a 3G radio access network [exclusive
of the already sunk spectrum costs] and far more expensive than a typical Wi-Fi network. The
【作者】：Prepared by: Michael W. Thelander
Signals Research Group, LLC
【格式】：DOC
【页数】：21
【语言】：英文
【摘要或目录】：
Over the last two years there has been a fair amount of hype and confusion surrounding WiMAX
(Worldwide Interoperability for Microwave Access), the trade name given to a group of wireless
technologies based on the IEEE 802.16 standard. Unfortunately, this hype and confusion has
resulted in raising the bar to such a high level that it will be very difficult for WiMAX to live up to
expectations, despite potentially achieving a lot.
Further, because expectations have been raised to such a high level, in particular regarding the
mobility aspect of WiMAX, there is a tendency to compare WiMAX with 3G-based cellular
technologies and reach the conclusion that WiMAX will compete with 3G or even replace it.
The reality of WiMAX is somewhat different, although the technology can still fulfill a valuable
role in the wireless ecosystem.
WiMAX is a credible solution to a number of problems that have plagued the fixed wireless
industry since its inception - namely, the lack of an open standard and the absence of major
silicon vendors and equipment suppliers. Once WiMAX certified equipment is available from a
number of suppliers, increased competition can occur, and with volumes of units shipped, more
attractive price points can be reached.
The cost to
deploy a carrier
If WiMAX continues to gain more support from the industry, it can also provide broadband
grade WiMAX radio
access in remote regions and developing parts of the world where basic voice or broadband
access network is
access using fixed line service is not economically feasible. Additionally, WiMAX can potentially
approximately on par
be used to provide backhaul in cellular networks or it can be used to significantly enhance the
with that of a 3Gperformance of public Wi-Fi (Wireless Fidelity) hot spots by increasing the throughput in the
radio access networkbackhaul network and by making it easier and more economical to deploy Wi-Fi access points.
and far more
expensive than a WiMAX is also developing a "mobile" standard which is not compatible with the fixed-based
solution. The "mobile" standard theoretically means that WiMAX can provide broadband wireless
typical Wi-Fi network.
access in a vehicular environment. While technically this feature can be achieved [with some
very important caveats that are further detailed in this paper], the business case for such a
service offering is more challenging, while it will only have marginal impact, at best, on the
growth and usage of 3G services. Publicly accessible Wi-Fi spots are already widely available,
especially in highly desirable locations such as hotels, airports and college campuses. Wi-Fi hot
spots are also increasingly available for free to consumers as a service differentiator from
restaurants and coffee shops and as a free public service from local municipalities.
Additionally, by the time the mobile version of WiMAX is available in user equipment in high
volumes from a number of suppliers, advanced 3G data networks using 1xEV-DO and HSDPA
will be available extensively from a well-established ecosystem. In order for WiMAX to
successfully compete in the mobile environment, it will need to offer something more compelling
than the 3G/Wi-Fi combination can offer and/or it will need to offer the same level of service for a
more attractive price.
Due to technology agnostic factors, such as site acquisition and preparation costs, not to
mention power requirements, both RF and electrical, the cost to deploy a carrier grade WiMAX
radio access network is approximately on par with that of a 3G radio access network [exclusive
of the already sunk spectrum costs] and far more expensive than a typical Wi-Fi network. The
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