|
Wireless Standard |
|
802.11b
Wireless Standard |
802.11g
Wireless Standard |
|
Frequency |
5 GHz
Underused 5 GHz band can coexist with 2.4 GHz networks without interference |
2.4 GHz
Heavily used 2.4 GHz band. Interference from other 2.4 GHz devices such as cordless phones, microwave ovens, etc. may occur |
2.4 GHz
Heavily used 2.4 GHz band. Interference from other 2.4 GHz devices such as cordless phones, microwave ovens, etc. may occur |
|
Speed |
54 Mbps
5X greater than 802.11b |
11 Mbps
Cable modem service typically averages no more than 4 to 5 Mbps |
54 Mbps
5X greater than 802.11b |
|
Average Actual Throughput |
27 Mbps |
4-5 Mbps |
20-25 Mbps |
|
# Channels / Non-overlapping |
12 / 8 |
11 / 3 |
11 / 3 |
Range
(Range will depend on antenna gain, transmit power, the receive sensitivity of the radio card and any obstacles between path ends.) |
Shorter range than 802.11b and 802.11g. Due to higher operating frequency, typically offers less range and is less capable of working through wall and floors. |
Better range than 802.11a. 2.4 GHz signal travel farther, and can work through walls and floors more effectively than 5 GHz signals |
Better range than 802.11a. 2.4 GHz signal travel farther, and can work through walls and floors more effectively than 5 GHz signals |
|
Compatibility |
Incompatible with 802.11b or 802.11g |
Widely adopted. Will work in 802.11g networks |
Backwards compatible with 802.11b networks (at 11 Mbps); Incompatible with 802.11a |
|
Popularity |
User base still relatively small. Limited selection on 802.11a equipment. |
Currently has the largest user base. 802.11b is currently used in most hot spots including airports, hotels, campuses, and public areas. Wide selection of 802.11b equipment. |
Latest ratified standard. With speeds up to 5 times faster than 802.11b, Expect this standard to overtake 802.11b as the standard of choice. |
|
Cost |
Most expensive |
Cheapest |
Since this standard's ratification, prices have dropped significantly. Pricing is competitive with 802.11b. Cheaper than 802.11a |
|
Benefits |
Excellent speed, unaffected by 2.4 GHz devices, can co-exist with 802.11b and 802.11g networks without interference |
Largest user base, cheapest, used in most public hot spots, largest user base, wide selection of equipment |
The speed of 802.11a with the range of 802.11b, compatible with 802.11b networks and hotspots, affordable |
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