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首頁> 外文期刊>Vehicular Technology, IEEE Transactions on >Radio-Resource Management and Access-Control Mechanism Based on a Novel Economic Model in Heterogeneous Wireless Networks
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Radio-Resource Management and Access-Control Mechanism Based on a Novel Economic Model in Heterogeneous Wireless Networks

機譯：異構(gòu)無線網(wǎng)絡中基于新型經(jīng)濟模型的無線資源管理與訪問控制機制

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In this paper, we first investigate the radio-resource management and network-selection schemes in heterogeneous wireless networks. Then, we propose a novel economic model to allocate radio resources for both code-division multiple-access (CDMA) networks and wireless local area networks (WLANs). Particularly, the resource-usage constraint is deduced in the CDMA uplink, where the radio resource is allocated with the aim of maximizing the total welfare of the CDMA network while satisfying the signal quality requirement of all mobile users. Moreover, we formulate and solve the optimization problem in the WLAN to maximize the network welfare when the maximum throughput in the WLAN is achieved by controlling the optimum collision probability. An approximated closed-form expression for the network welfare is also given when the assigned bandwidth for each user is close to the bandwidth request. Finally, we design the joint access-control mechanism under different load conditions in coupled heterogeneous networks. Numerical results show that the proposed scheme can achieve approximately 20% more users and 10% more network social welfare, which outperforms the utility-function-based access selection and single network access-control mechanisms in the literature for heterogeneous wireless networks.
機譯：在本文中，我們首先研究異構(gòu)無線網(wǎng)絡中的無線電資源管理和網(wǎng)絡選擇方案。然后，我們提出了一種新穎的經(jīng)濟模型來為碼分多址（CDMA）網(wǎng)絡和無線局域網(wǎng)（WLAN）分配無線電資源。特別地，在CDMA上行鏈路中推導資源使用約束，其中分配無線電資源的目的是在滿足所有移動用戶的信號質(zhì)量要求的同時最大化CDMA網(wǎng)絡的總福利。此外，當通過控制最佳沖突概率實現(xiàn)WLAN中的最大吞吐量時，我們制定并解決WLAN中的優(yōu)化問題，以最大程度地提高網(wǎng)絡福利。當為每個用戶分配的帶寬接近帶寬請求時，也會給出網(wǎng)絡福利的近似封閉式表達式。最后，我們設計了異構(gòu)網(wǎng)絡中不同負載條件下的聯(lián)合訪問控制機制。數(shù)值結(jié)果表明，該方案可實現(xiàn)約20％的用戶增長和10％的網(wǎng)絡社會福利增長，優(yōu)于異構(gòu)無線網(wǎng)絡文獻中基于效用函數(shù)的訪問選擇和單網(wǎng)絡訪問控制機制。

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