WWAN definition A wireless wide area network（WWAN） refers to a wireless network that covers the whole country or the world and provides wireless access over a larger range. Compared with wireless personal area networks（WPAN）, wireless local area networks（WLAN）, and wireless metropolitan area networks（WMAN）, wide emphasizes fast mobility. GSM mobile communication system and satellite communication system, the current global wireless wide area network (WWAN) mainly uses two major technologies, namely GSM and CDMA technology. These two sets of technologies will develop at an equal pace and gradually transition to 3G and super 3G technologies, which can reach 384K. 2Mbps. The speed of cellular technology is not high, and it cannot provide wide access technology similar to wireless personal area network (WPAN), zero-line local area network, and wireless metropolitan area network (WMAN). Wireless meets the needs of multimedia and other applications.

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What Is WWAN?
WWAN definition
A wireless wide area network（WWAN） refers to a wireless network that covers the whole
country or the world and provides wireless access over a larger range.
Compared with wireless personal area networks
（WPAN）
, wireless local area networks
（WLAN）
,
and wireless metropolitan area networks（WMAN）, wide emphasizes fast mobility.
GSM mobile communication system and satellite communication system, the current global
wireless wide area network (WWAN) mainly uses two major technologies, namely GSM and
CDMA technology. These two sets of technologies will develop at an equal pace and gradually
transition to 3G and super 3G technologies, which can reach 384K. 2Mbps.
The speed of cellular technology is not high, and it cannot provide wide access technology similar
to wireless personal area network (WPAN), zero-line local area network, and wireless
metropolitan area network (WMAN). Wireless meets the needs of multimedia and other
applications.
It is mostly suitable for mobile phones, PDAs, and other weak terminals with low processing
capabilities. It is not suitable for notebook computers with high processing capabilities. The
technical characteristics of the 802.20 technical standard that specializes in wireless wide area
network broadband wireless access technology is formulated.
In the physical layer technology, with OFDM and MIMO as the core, fully tap the resources of
time domain, frequency domain, and space domain, greatly improving the spectrum efficiency of
the system.
In terms of the design concept, the pure IP architecture for packet data is also better than the
existing 3G technology in dealing with bursty data services and is equivalent to 3.5G (HSDPA. It

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also has a great advantage.
Wireless Wide Area Network (WWAN), which represents the wireless network of China Mobile
Unicom, has a characteristic transmission distance of <15km, a transmission rate of about 3Mbps,
and a faster development speed.
WWAN is a communication method that uses wireless networks to connect local area networks
(LANs) with extremely dispersed physical distances.
WWAN connects to a large geographic area, often a country or a continent. Its purpose is to
interconnect the remotely distributed local area networks. Its structure is divided into two parts,
the end system (user collection at both ends) and the communication system (intermediate link).
WWAN standard
IEEE802.20 is an important standard for WWAN. IEEE802.20 was proposed by the IEEE802.16
working group in March 2002, and a special working group was established for this purpose. This
group was independent as the IEEE802.20 working group in September 2002.
802.20 is to achieve high-speed data transmission in a high-speed mobile environment to make
up for the mobility disadvantages of the IEEE802.1x protocol suite.
802.20 technology can effectively solve the contradiction between mobility and transmission rate.
It is an air interface specification for broadband wireless access systems suitable for high-speed
mobile environments, and its operating frequency is less than 3.5 GHz.
The IEEE802.20 standard takes Orthogonal Frequency Division Multiplexing (OFDM) and Multiple
Input Multiple Output (MIMO) as the core technology in the physical layer technology, fully taps
the resources in the time domain, frequency domain, and space domain, greatly improving the
system Spectral efficiency.
In terms of the design concept, the performance of a pure IP architecture based on packet data
to adapt to bursty data services is better than that of 3G technology and is equivalent to 3.5G
(HSDPA, EV-DO) performance. It also has great advantages in implementation and deployment
costs.
IEEE802.20 can meet the high mobility and high throughput requirements of the wireless
communication market and has the characteristics of good performance, high efficiency, low cost,
and flexible deployment.
IEEE802.20 mobile must be better than IEEE802.11, and its data throughput is stronger than 3G
technology. Its design concept is in line with the development direction of next-generation
wireless communication technology, so it is a very promising wireless technology.
At present, the IEEE802.20 system technical standard still needs to be improved, the product
market is not yet mature, and the industry chain needs to be improved, so it is difficult to
determine its position in the future market.
WWAN application
Typical applications include power systems, medical systems, taxation systems, transportation
systems, banking systems, dispatch systems, and other fields.
Outdoor wireless network bridge equipment has a wide range of applications in various
industries. For example, the tax system adopts wireless network bridge equipment to realize

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wireless networking among various taxation points, taxation departments, and tax bureaus;
The power system adopts wireless network bridge products to connect various substations,
power plants, and power bureaus distributed in different regions to realize information exchange
and office automation.
The education system can establish a network connection between the student dormitory, library,
and teaching building through wireless access devices.
Wireless network construction cannot be restricted by complex terrain such as mountains, rivers,
streets, etc., and has the advantages of flexibility, short cycle, and low construction cost.
Government agencies and various large enterprises can be distributed in two or more areas
through wireless networks of the buildings or branches are connected.
The wireless network is especially suitable for the network connection of branches with complex
terrain, high network wiring costs, scattered distribution, and construction difficulties. It can
establish a reliable network connection with a shorter construction period and a lower cost.
Industry Application
Power Systems
Connect substations, power plants, and power bureaus in different locations
Tax system
Link tax collection points, taxation departments at all levels, taxation branches, and taxation
bureaus
Education system
Connect teaching building, library, and student dormitory
Medical system
Connect hospitals, pharmacies, and clinics
Banking system
Connect scattered business outlets, business offices, and branches
Transportation system
Connect the monitoring points scattered at various intersections with the monitoring center
Airport, railway, port connection
Large enterprise
Connections between company headquarters, remote offices, sales terminals, and factories
Dispatch system
Connect with public security bureaus, police stations, fire and security points
Security Monitoring
Transmit the video surveillance information collected by the remote monitoring point to the
monitoring center through the wireless network
Large venues and exhibitions
Establish temporary network connections for sports, performances, exhibitions, and promotions
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