16e vs 16m-difference between WiMAX and WiMAX advanced
This page compares Mobile WiMAX(802.16e) vs WiMAX Advanced(802.16m) and describes difference between WiMAX(16e) and WiMAX Advanced(16m). The useful links to difference between various terms are provided here.
WiMAX standards have been specified in IEEE 802.16 series. IEEE standard specifies wimax PHY and MAC layer specifications. There are various versions of the wimax. The popular among them are fixed wimax(16d), mobile wimax(16e) and wimax advanced(16m).
WiMAX-802.16e
The standard IEEE 802.16e is referred as mobile wimax standard. It is developed to provide broadband internet connectivity in mobile subscriber devices moving at the pedestrian and vehicular speeds. It uses OFDMA modulation scheme in the downlink and SC-FDMA modulation in the uplink. The frame structure follows TDD topology in which both downlink and uplink share the same frequencies at different time intervals.
There is a concept of zone in mobile wimax in the frame structure. Various zones are supported such as PUSC, FUSC and AMC2X3 depending upon subcarrier assignments in a frame. Refer 802.16e article.
WiMAX Advanced-802.16m
This standard version is amendment to existing 802.16-2009 standard. It has been developed to meet the requirement of IMT-Advanced system. The system has basic applications such as voice,gaming and mobile internet.
The requirement of IMT advanced system as are as follows:
• Max. data rate of about 1GBPS under low mobility scenario.
• Support for 100MHz bandwidth and 10ms round trip time.
To achieve above mentioned requirement of IMT-Advanced 802.16m has been introduced with following
features. These will increase the data rates.
• MIMO support with increase in number of antennas
• Multi-carrier operation
• super-frame structure
Following table mentions major difference between WiMAX(16e) and WiMAX Advanced(16m) technologies. One can also read page on 16d vs 16e for difference between 16d and 16e.
| Specifications | Mobile WiMAX(16e) | WiMAX Advanced(16m) |
|---|---|---|
| Data Rate(Aggregate) | About 60-70 Mbps | 100 Mbps(Mobile subscribers) 1GBPS (Fixed subscribers) |
| RF Frequency | 2.3GHz, 2.5 to 2.7GHz, 3.5GHz |
<6GHz |
| Topology | FDD/TDD, H-FDD(in Mobile Subscriber) |
FDD/TDD(BS), H-FDD(in Mobile Subscriber) |
| MIMO (Antennas) | up to 4 streams, no limit on number of antennas |
upto 4/8 streams, no limit on number of antennas |
| Antenna Configurations support | Downlink: 1X1(SISO), 1X2,2X1,2X2, 2X4,4X2,4X4,8X8,4X8 Uplink:1X1(SISO), 1X2,1X4,2X4,4X4 |
Downlink: 2X2,2X4, 4X2,4X4, 8X8,4X8 Uplink:1X2,1X4, 2X4, 4X4 |
| Distance coverage | About 10 km | 3Km to 100 Km |
| Carrier Aggregation (multi-carrier) support |
Not supported | Supported |
| Bandwidth | 5-20MHz per RF Carrier | 5-20MHz per RF carrier, CA(carrier aggregation) feature will help achieve BWs upto 100MHz. |
| Frame Length | 2-20ms without any superframe |
Fixed 5ms , With superframes frame duration of 20ms is used including 4 frames |
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