Introduction
Related works
IEEE 802.16 QoS
Bandwidth reservation with Mobile QoS
Zone-based bandwidth management scheme
Basic idea and notations
Notation | Description | Type |
---|---|---|
L
| Zone size | System parameters |
S
| Satisfaction rate for required bandwidth | |
HCMAX | Hop count of 802.16-MR | |
Visiting probability at RSi, j | ||
Normalized visiting probability at RSi, j within the zone | ||
Hop count between BS and RSi, j | ||
S_TH
| Threshold of the satisfaction rate | User parameters |
BW | Flow data rate | |
RSinitial | The initial RS of the zone for bandwidth allocation |
Admission control and bandwidth allocation
Intra-zone handoff and inter-zone handoff
Case 1 (Reserved bandwidth of new location < original reserved bandwidth)
Case 2 (Reserved bandwidth of new location = original reserved bandwidth)
Case 3 (Reserved bandwidth of new location > original reserved bandwidth)
Performance evaluation
Simulation topology analysis
Tree topology
Case a
Case b
Case c
Case d
Case e
Chessboard topology
Simulation environment
Description | Value |
---|---|
Topology size | 11*11 Mesh |
System bandwidth | 20 Mbps |
Time frame | 10 ms |
# of Minislot in time frame | 500 |
Simulation time | 100 s |
Flow type | UGS |
Flow rate | 3.65 Kbps |
Flow life time | 50 s |
Number of flow | 100 to 1000 |