Research Article
An Adaptive Medium Access Parameter Prediction Scheme for IEEE 802.11 Real-Time Applications
Table 2
Features of the dynamic adaptation schemes.
| | IEEE 802.11 compatibility | Additional traffic | Efficiency | Prioritization | QoS performance with DCF and EDCA stations | Designed for saturated traffic | Main issues |
| Our proposal | Yes | No | Efficient | AIFSN + CW | Higher than EDCA | No | — | i-EDCA [7] | Yes | No | Efficient | CW | Lower than EDCA | No | Bad result in the presence of DCF stations. Only uses CW | DACKS [8] | Yes | No | Very inefficient | CW | Higher than EDCA | No | Very inefficient. Retransmits correct packets | AEDCA [9] | Yes | No | Efficient | CW | Lower than EDCA | No | Bad results in the presence of DCF stations. Only uses CW | MMDP-FMAC [10] | Yes | No | Efficient | Fair allocation | Lower than EDCA | No | Bad results in the presence of DCF stations. Problems with the deadline of the real-time applications | Hamidian and Körner [11] | Yes | No | Efficient | TXOP | Similar to EDCA | No | Problems with the deadline of the real-time applications | QHDCF [12] | No | Yes | Efficient | Centralized priority | Higher than EDCA | No | Incompatible with the standard. Uses modified packets | iPAS [14] | No | Yes | Inefficient | Centralized priority | Lower than EDCA | No | Incompatible with the standard. Requires stations changes. Introduces additional control traffic | Banchs and Vollero [17] | Yes | No | Efficient | CW | Lower than EDCA | Yes | Bad results in the presence of DCF stations. Only uses CW. |
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