IEEE 802.16j引進多跳中繼技術及增設中繼站，來延伸網路中的無線服務範圍及提升吞吐量。因此，連線可在眾多路徑中選擇一頻道品質較佳的路徑。再者，路徑選擇必須協調頻寬配置程序以防止封包在中繼路徑上發生壅塞情形。許多路徑選擇演算法被提出。然而，這些演算法沒有考慮整條路的頻道狀況和協調頻寬配置特性。這篇論文中，我們提出一多跳中繼徑選擇演算法稱頻寬配置感知路徑選擇，選路依據：(1) 整條路徑的頻道狀況; (2) 中繼路徑與直接路徑; (3) 路徑中的可用頻寬。從模擬結果顯示，BAAP勝過先前的方法可提升25% ~ 38%的吞吐量。

IEEE 802.16j introduces the multi-hop relaying technique and a new type of stations, Relay Stations (RS), to extend the radio coverage of the network and enhance the throughput. Therefore, the connection can have multiple paths and selects a good path according to the channel quality. Furthermore, the path selection process has to coordinate with the bandwidth allocation procedure to prevent packets from congesting on the RS. Many IEEE 802.16j multi-hop relay path selection algorithms were proposed. However, these algorithms do not consider the channel condition of the overall path and the bandwidth allocation procedure. In this paper, we proposed a multi-hop relay path selection algorithm called Bandwidth Allocation Awareness Path Selection Algorithm (BAAP), which selects a path based on (1) overall path quality rather than first hop, (2) relay and direct path, and (3) available bandwidth of each hop. From the simulation results, BAAP outperforms the previous works on goodput about 25% ~ 38%.

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