Skip to main content
SpringerLink
Log in

PIANO: A power saving strategy for cellular/VoWLAN dual-mode mobiles

  • Published:
Wireless Networks Aims and scope Submit manuscript

Abstract

The integration of cellular and VoIP over WLAN (VoWLAN) systems recently has attracted considerable interest from both academia and industry. A cellular/VoWLAN dual-mode system enables users to access a low-cost VoIP service in a WLAN hotspot and switch to a wide-area cellular system without WLANs. Unfortunately, cellular/VoWLAN dual-mode mobiles suffer the power consumption problem that becomes one of the major concerns for commercial deployment of the dual-mode service. In this study, we present a novel power saving mechanism, called PIANO (paging via another radio), for the integration of heterogeneous wireless networks, and further apply the proposed methods to implement a cellular/VoWLAN dual-mode system. Based on the proposed mechanisms, a dual-mode mobile can completely switch off its WLAN interface, only leaving the cellular interface awake to listen to paging messages. When a mobile receives a paging message from its cellular interface, it wakes up the WLAN interface and responds to connection requests via WLAN networks. Therefore, a dual-mode mobile reduces the power consumption by turning off the WLAN interface during idle, and can also receive VoWLAN services. Measurement results based on the prototype system demonstrate that the proposed methods significantly extend the standby hours of a dual-mode mobile.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Fig. 13
Fig. 14
Fig. 15
Fig. 16
Fig. 17

Similar content being viewed by others

References

  1. D. Lenton, Speaking of Wi-Fi, IEE Review 49(7) (July 2003) 44–47.

    Article  Google Scholar 

  2. E. Shih, P. Bahl, and M.J. Sinclair, Wake on wireless: An event driven energy saving strategy for battery operated devices, ACM MobiCom (2002).

  3. J. Ala-Laurila, J. Mikkonen and J. Rinnemaa, Wireless LAN access network architecture for mobile operators, IEEE Communications Magazine 39(11) (Nov. 2001) 82–89.

    Article  Google Scholar 

  4. J. Rosenberg et al., SIP: Session initiation protocol, RFC 3261 (June 2002).

  5. C. Bettstetter, Mobility modeling in wireless networks: Categorization, smooth movement, and border effects, ACM SIGMOBILE Mobile Computing and Communications Review 5(3) (July 2001) 55–66.

    Article  Google Scholar 

  6. W.-S. Feng, L.-Y. Wu, Y.-B. Lin, and W.-E. Chen, WGSN: WLAN-based GPRS support node with push mechanism, The Computer Journal 47(4) (July 2004) 405–417.

    Article  Google Scholar 

  7. SIP Express Router (SER), http://www.iptel.org/ser/.

  8. T. Taekyoung Kwon, M. Gerla, S. Das, and S. Das, Mobility management for VoIP service: mobile I P vs. SIP, IEEE Wireless Communications (Oct. 2002) 66–75.

  9. A. Mishra, M. Shin and W. Arbaugh, An empirical analysis of the IEEE 802.11 MAC layer handoff process, ACM SIGCOMM Computer Communication Review 93(2) (2003) 93–102.

    Article  Google Scholar 

  10. Nortel Networks, A comparison between GERAN packet-switched call setup using SIP and GSM circuit-switched call setup using RIL3-CC, RIL3-MM, RIL3-RR, and DTAP, 3GPP TSG GERAN #2, GP-000508, (6–10 November 2000).

  11. C.F. Chiasserini and R. Rao, Combining paging with dynamic power management, IEEE INFOCOM 2001 (April 2001) 12–19.

  12. J. Rabaey, J. Ammer, T. Karalar, S. Li, B. Otis, M. Sheets and T. Tuan, PicoRadios for wireless sensor networks: The next challenge in ultra-low-power design, in: Proceedings of the ISSCC (February 2002).

  13. S. Singh and C. Raghavendra, PAMAS: Power aware multi-access protocol with signalling for Ad Hoc networks, ACM Computer Communications Review 28(3) (July 1998) 5–26.

    Article  Google Scholar 

  14. M. Stemm and R.H. Katz, Measuring and reducing energy consumption of network interfaces in handheld devices, IEICE Transactions on Fundamentals of Electronics, Communications, and Computer Science (August 1997).

  15. A. Andreadis, G. Benelli, G. Giambene, and B. Marzucchi, A performance evaluation approach for GSM-based information services, IEEE Transcations on Vehicular Technology 52(2) (March 2003).

  16. Sychip SDIO chip WLAN 6060, http://www.sychip.com/wlan.htm.

  17. Intersil Prism 2.5 chip, http://www.intersil.com.

  18. 3GPP TS 23.234, 3GPP System to Wireless Local Area Network (WLAN) Interworking; System Description (Release 6), V. 6.5.0, 2005.

Download references

Acknowledgment

The authors would like to thank the National Science Council of the Republic of China for financially supporting this research under Contract No. NSC 95-2221-E-009-025.

Author information

Authors and Affiliations

  1. Department of Computer Science, National Chiao Tung University, Hsinchu, Taiwan, ROC

    Shiao-Li Tsao & E-Cheng Cheng

Authors
  1. Shiao-Li Tsao
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. E-Cheng Cheng
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Shiao-Li Tsao.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Tsao, SL., Cheng, EC. PIANO: A power saving strategy for cellular/VoWLAN dual-mode mobiles. Wireless Netw 14, 683–698 (2008). https://doi.org/10.1007/s11276-006-0011-8

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11276-006-0011-8

Keyword

Search

Navigation