基于雙向匹配模型的異構(gòu)網(wǎng)絡(luò)垂直切換算法

馬彬; 鄧紅; 謝顯中

doi:10.11999/JEIT170300

基于雙向匹配模型的異構(gòu)網(wǎng)絡(luò)垂直切換算法

doi: 10.11999/JEIT170300

基金項(xiàng)目:

國家自然科學(xué)基金(61471076, 61601070)，重慶市基礎(chǔ)與前沿研究計(jì)劃(cstc2015jcyjA40047, cstc2016jcyjA0455)，重慶郵電大學(xué)博士啟動(dòng)基金(A2014-10, A2014-105, A2015-16)

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出版歷程
- 收稿日期: 2017-04-05
- 修回日期: 2017-09-13
- 刊出日期: 2018-02-19

Two-sided Matching Model Based Vertical Handover Algorithm in Heterogeneous Wireless Networks

Funds:

The National Natural Science Foundation of China(61471076, 61601070), The Foundation and Advanced Research Program of Chongqing (cstc2015jcyjA40047, cstc2016jcyj A0455), The Doctoral Start-up Fund of Chongqing University of Posts and Telecommunications (A2014-10, A2014-105, A2015-16)

摘要

摘要: 針對(duì)當(dāng)前垂直切換判決算法存在的單一性，即切換判決時(shí)以用戶或網(wǎng)絡(luò)單方面為中心，沒有充分考慮兩者對(duì)切換判決的綜合影響，導(dǎo)致垂直切換性能不佳的問題，該文提出一種基于雙向匹配模型的垂直切換算法。該算法的主要思想是：首先分別以用戶和網(wǎng)絡(luò)為中心，設(shè)計(jì)各自的評(píng)估模型，用于評(píng)估雙方對(duì)彼此的偏好順序，并建立相應(yīng)的排序值矩陣；其次利用排序值信息，基于一對(duì)多雙向匹配模型對(duì)用戶側(cè)和網(wǎng)絡(luò)側(cè)的雙向匹配行為進(jìn)行建模和求解，以獲得最優(yōu)匹配解；最后根據(jù)最優(yōu)匹配結(jié)果，進(jìn)行垂直切換。仿真表明，該文設(shè)計(jì)的評(píng)估模型是合理的，并且所提出的算法能較好地兼顧用戶側(cè)的高性價(jià)比需求和網(wǎng)絡(luò)側(cè)的低阻塞率需求。
- 異構(gòu)無線網(wǎng)絡(luò) /
- 垂直切換 /
- 雙向匹配 /
- 排序值
Abstract: Most of the existing vertical handover algorithms are only based on user centric or network centric, which do not fully consider the common impact of the two sides on the handover decision. In order to solve this problem, a two-sided matching model based vertical handover algorithm in heterogeneous wireless networks is proposed. The handover performance is improved from the following aspects: first, two evaluation models of user centered and network centered are respectively proposed based on quality of service revenue and the blocking rate. And the ranking value of the two sides is evaluated further. Then, based on the ranking value, a one-to-many two-sided matching model is used to model the two-sided matching behavior of users and networks. In this way, users can access suitable networks. Simulation results show that the proposed evaluation models are in accordance with the practical network scenario, and the proposed algorithm can better balance the demand of users and networks.
- Heterogeneous wireless networks /
- Vertical handover /
- Two-sided matching /
- Ranking value

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參考文獻(xiàn)(23)

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