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Hybrid LTE-VANETs Based Optimal Radio Access Selection

機譯：基于混合LTE-VANET的最佳無線電接入選擇

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In road networks, the mutual metric for the location of the optimal route relaying on two points is either the length of the path or the time of the trip. Hence, the selection of access to any radio access technology (RAT) from a variety of RATs by a user for onward association has been intensively investigated by vehicular ad hoc network (VANET). In particular, it carries and distributes information, inter-communicates, and is capable of communicating with other stationary units deployed along the roadways. The problem is low data packet delivery ratio, high delay, link transmission instability, and the number of hopes per route. This paper proposed an ancient hybrid optimal radio access selection algorithm (ORAS) which combines the LTE and VANET networks with accomplishing high data packet delivery ratios and low delay, while maintaining the minimum level of cellular infrastructure usage by means of increasing the stability of link transmission and reducing the number of hopes per route. The proposed algorithm is the multi-hop-routing-protocol-based IEEE 802.11p/LTE hybrid architecture. The optimal radio access selection algorithm (ORAS), based on IEEE 802.11p radio resource management (RRM), examines the IEEE 802.11p network load through the monitor mechanism of network load. The monitor mechanism, in turn, observes the queue length to determine the current network loads. The ORAS/RRM entity broadcasts beacons through its IEEE 802.11p interface once the queue length is inferior to a particular threshold limit. Nonetheless, the existing network load might cause a collision case which leads to severe performance degradation on the condition that the queue length exceeds specific threshold limit.
機譯：在道路網(wǎng)絡(luò)中，用于在兩個點上中繼最佳路線的位置的相互度量標準是路徑長度或行程時間。因此，已經(jīng)由車輛自組織網(wǎng)絡(luò)（VANET）深入研究了用戶從各種RAT選擇對任何無線電接入技術(shù)（RAT）進行向前關(guān)聯(lián)的選擇。特別是，它承載和分發(fā)信息，進行相互通信，并能夠與沿道路部署的其他固定單元進行通信。問題是數(shù)據(jù)包傳遞率低，延遲高，鏈路傳輸不穩(wěn)定以及每條路由的希望數(shù)。本文提出了一種古老的混合最優(yōu)無線電接入選擇算法（ORAS），該算法將LTE和VANET網(wǎng)絡(luò)相結(jié)合，可實現(xiàn)高數(shù)據(jù)包傳輸率和低延遲，同時通過提高鏈路傳輸?shù)姆€(wěn)定性來保持蜂窩基礎(chǔ)設(shè)施使用的最低水平并減少每條路線的希望數(shù)量。該算法是基于多跳路由協(xié)議的IEEE 802.11p / LTE混合架構(gòu)。基于IEEE 802.11p無線電資源管理（RRM）的最佳無線電訪問選擇算法（ORAS），通過網(wǎng)絡(luò)負載的監(jiān)視機制來檢查IEEE 802.11p網(wǎng)絡(luò)負載。監(jiān)視機制進而觀察隊列長度以確定當前的網(wǎng)絡(luò)負載。一旦隊列長度小于特定的閾值限制，ORAS / RRM實體就會通過其IEEE 802.11p接口廣播信標。但是，現(xiàn)有的網(wǎng)絡(luò)負載可能會導(dǎo)致沖突情況，如果隊列長度超過特定的閾值限制，則會導(dǎo)致嚴重的性能下降。

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