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多媒體業(yè)務(wù)在越區(qū)切換中服務(wù)質(zhì)量保證方法的研究

黃倩,  陳惠民

黃倩, 陳惠民. 多媒體業(yè)務(wù)在越區(qū)切換中服務(wù)質(zhì)量保證方法的研究[J]. 電子與信息學(xué)報(bào), 2003, 25(4): 503-508.
引用本文: 黃倩, 陳惠民. 多媒體業(yè)務(wù)在越區(qū)切換中服務(wù)質(zhì)量保證方法的研究[J]. 電子與信息學(xué)報(bào), 2003, 25(4): 503-508.
Huang Qian, Chen Huimin. Studying on the qos guaranteed method for multimedia traffic handoff[J]. Journal of Electronics & Information Technology, 2003, 25(4): 503-508.
Citation: Huang Qian, Chen Huimin. Studying on the qos guaranteed method for multimedia traffic handoff[J]. Journal of Electronics & Information Technology, 2003, 25(4): 503-508.

多媒體業(yè)務(wù)在越區(qū)切換中服務(wù)質(zhì)量保證方法的研究

Studying on the qos guaranteed method for multimedia traffic handoff

  • 摘要: 為了降低多媒體業(yè)務(wù)在移動(dòng)環(huán)境中的呼叫中斷率,提高無(wú)線信道的利用率,該文提出了一種動(dòng)態(tài)預(yù)留帶寬分配機(jī)制(DRBA),該機(jī)制對(duì)到達(dá)的越區(qū)切換呼叫按業(yè)務(wù)類型區(qū)別處理,對(duì)于高優(yōu)先級(jí)的實(shí)時(shí)業(yè)務(wù),通過(guò)在鄰近小區(qū)內(nèi)預(yù)留帶寬的方法降低呼叫中斷率;對(duì)于非實(shí)時(shí)業(yè)務(wù),當(dāng)小區(qū)內(nèi)的信道帶寬不足以支持新到達(dá)的越區(qū)切換呼叫時(shí),通過(guò)動(dòng)態(tài)地借用實(shí)時(shí)業(yè)務(wù)過(guò)度預(yù)留的帶寬,改善非實(shí)時(shí)業(yè)務(wù)的呼叫中斷率,進(jìn)一步達(dá)到提高無(wú)線信道利用率,為不同的業(yè)務(wù)類型提供公平的服務(wù)質(zhì)量(QoS)的目標(biāo)。
    Abstract: A Dynamical Reserved Bandwidth Allocation scheme (DRBA) for handoff in multimedia mobile networks is presented to reduce the call dropping probability and improve the bandwidth utilization. The proposed scheme reserves bandwidth for real-time handoff calls and allows non-real-time handoff calls to borrow the over-booked bandwidth from real-time handoff calls when the free bandwidth is deficient. Simulation results show that reduction in dropping probability and increase in bandwidth utilization are obtained in our proposed DRBA scheme. It also provides fair QoS for different types of services.
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  • D. Wong, T. J. Lim, Soft handoff in CDMA mobile systems, IEEE Personal Communications Magazine, 1997, 4(10), 6-17.[2]A.J. Viterbi, et al., Soft handoff extends CDMA cell coverage and increase reverse link capacity,IEEE J. on Selected Areas in Communications, 1994, 12(8), 1281-1288.[3]S. Su, J. Chen, J. Huang, Performance analysis of soft handoff in CDMA cellular networks, IEEE J. on Selected Areas in Communications, 1996, 14(9), 1762-1769.[4]C. Oliveira, J. B. Kim, T. Suda, An adaptive bandwidth reservation scheme for high-speed multimedia wireless networks, IEEE J. on Selected Areas in Communications, 1998, 16(6), 858-874.[5]A. Armstrong.[J].A. Hac, A new resource allocation scheme for QoS provisioning in microcellular networks, Proceedings, IEEE ICC98, Atlanta, GA, USA.1998,:-[6]L.O. Guerrero, H. Aghvami, A prioritized handoff dynamic channel allocation strategy for PCS,IEEE Trans. on Vehicular Technology, 1999, 48 (4), 1203-1215.[7]L. Yin, B. Ai, Z. Zhang, Y. B. Lin, Performance analysis of a Dual-Threshold Reservation (DTR) scheme for voice/data integrated mobile wireless networks, IEEE WCNC 2000, Chicago, IL, USA,2000, 258-262.[8]J.Y. Lee, S. Bank, Cell-oriented adaptive admission control for QoS support in wireless multimedia networks, Electronics Letters, 2000, 36(21), 1826-1828.[9]S.S. Rappaport, Blocking, hand-off and traffic performance for cellular communication systems with mixed platforms, IEE Proc.-I, 1993, 140(5), 389-401.[10]P.V. Orlik, S. S. Rappaport, On the handoff arrival process in cellular communications, Wireless Networks, 2001, 7(2), 147-157.
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出版歷程
  • 收稿日期:  2001-12-17
  • 修回日期:  2002-08-02
  • 刊出日期:  2003-04-19

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