{"title":"OFDMA蜂窝网络中VoIP调度的有效无线电资源利用估计","authors":"Suvra Shekhar Das, P. Ghosh, P. Chandhar","doi":"10.1109/VETECS.2012.6240309","DOIUrl":null,"url":null,"abstract":"This work presents a method to estimate the amount of radio resource required to support a given number of Voice Over IP (VoIP) users in Orthogonal Frequency Division Multiple Access (OFDMA) based cellular systems. The proposed method is useful for the Call Admission Control (CAC) module, which needs to estimate the radio resource utilization before admitting new calls in the system. It is also useful in predicting the maximum number of VoIP users that can be supported for different cell scenarios and spatial user distributions. The proposed method is evaluated for Dynamic as well as Semi-Persistent (SP) scheduling algorithms. Results are presented for 1×2 Maximum Ratio Combining (MRC) and 4×2 Space Frequency Block Code (SFBC)- Frequency Switched Time Diversity (FSTD) modes. The 3rd Generation Partnership Project (3GPP)-Long Term Evolution (LTE) system parameters are used for performance analysis in this work.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2012-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"15","resultStr":"{\"title\":\"Estimation of Effective Radio Resource Usage for VoIP Scheduling in OFDMA Cellular Networks\",\"authors\":\"Suvra Shekhar Das, P. Ghosh, P. Chandhar\",\"doi\":\"10.1109/VETECS.2012.6240309\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This work presents a method to estimate the amount of radio resource required to support a given number of Voice Over IP (VoIP) users in Orthogonal Frequency Division Multiple Access (OFDMA) based cellular systems. The proposed method is useful for the Call Admission Control (CAC) module, which needs to estimate the radio resource utilization before admitting new calls in the system. It is also useful in predicting the maximum number of VoIP users that can be supported for different cell scenarios and spatial user distributions. The proposed method is evaluated for Dynamic as well as Semi-Persistent (SP) scheduling algorithms. Results are presented for 1×2 Maximum Ratio Combining (MRC) and 4×2 Space Frequency Block Code (SFBC)- Frequency Switched Time Diversity (FSTD) modes. The 3rd Generation Partnership Project (3GPP)-Long Term Evolution (LTE) system parameters are used for performance analysis in this work.\",\"PeriodicalId\":333610,\"journal\":{\"name\":\"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)\",\"volume\":\"39 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2012-05-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"15\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/VETECS.2012.6240309\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/VETECS.2012.6240309","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Estimation of Effective Radio Resource Usage for VoIP Scheduling in OFDMA Cellular Networks
This work presents a method to estimate the amount of radio resource required to support a given number of Voice Over IP (VoIP) users in Orthogonal Frequency Division Multiple Access (OFDMA) based cellular systems. The proposed method is useful for the Call Admission Control (CAC) module, which needs to estimate the radio resource utilization before admitting new calls in the system. It is also useful in predicting the maximum number of VoIP users that can be supported for different cell scenarios and spatial user distributions. The proposed method is evaluated for Dynamic as well as Semi-Persistent (SP) scheduling algorithms. Results are presented for 1×2 Maximum Ratio Combining (MRC) and 4×2 Space Frequency Block Code (SFBC)- Frequency Switched Time Diversity (FSTD) modes. The 3rd Generation Partnership Project (3GPP)-Long Term Evolution (LTE) system parameters are used for performance analysis in this work.
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