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  • Print publication year: 2013
  • Online publication date: May 2013

2 - Fundamentals of access control in femtocells

Summary

Access control in femtocell deployments

One unique trait of femtocells is that they are paid, installed, and managed by the end users. Compared with macrocells, which are installed by the network operators and thus can be accessed by any user, femtocells can choose the set of users that is allowed for access. In the simplest scenario, the femtocell can be configured for either: (i) closed access, where only registered home users can use the femtocell; or (ii) open access where any nearby users are allowed to use the femtocell. The choice of femtocell access control involves many important issues in two-tier femtocell networks [1-6].

The first important issue is cross-tier interference. Unlike wireless fidelity (WiFi) access points, femtocells serve users in licensed spectrum to guarantee quality of service (QoS) and because the devices they communicate with are developed for those frequencies. Compared to allocating separate channels inside the licensed spectrum exclusively to femtocells, sharing spectrum would be preferred from an operator perspective [1, 5, 7]. However, the co-channel spectrum sharing between femtocells and macrocells potentially gives rise to serious cross-tier interference in closed access. As shown in Figures 2.1 and 2.2, in closed access a cellular user, even when it is geographically close to a femtocell, is forced to communicate with the distant macro base station (BS). Therefore, this cellular user suffers from strong downlink interference from the nearby femtocell (see Figure 2.1), and likewise causes strong uplink interference to that femtocell (see Figure 2.2) [8-10].

References
[1] V., Chandrasekhar, J. G., Andrews, and A., Gatherer, “Femtocell networks: a survey,” IEEE Commun. Mag., vol. 46, no. 9, pp. 59–67, Sep. 2008.
[2] A., Golaup, M., Mustapha, and L., Patanapongpibul, “Femtocell access control strategy in UMTS and LTE,” IEEE Commun. Mag., vol. 47, no. 9, pp. 117–23, Sep. 2009.
[3] R. Y., Kim, J. S., Kwak, and K., Etemad, “WiMAX femtocell: requirements, challenges, and solutions,” IEEE Commun. Mag., vol. 47, no. 9, pp. 84–91, Sep. 2009.
[4] G., de la Roche, A., Valcarce, D., López-Pérez, and J., Zhang, “Access control mechanisms for femtocells,” IEEE Commun. Mag., vol. 48, no. 1, pp. 33–9, Jan. 2010.
[5] J. G., Andrews, H., Claussen, M., Dohler, S., Rangan, and M. C., Reed, “Femtocells: past, present, and future,” IEEE J. Sel. Areas Commun. (JSAC), vol. 30, no. 3, pp. 497–508, Apr. 2012.
[6] S., Yun, Y., Yi, D.-H., Cho, and J., Mo, “Open or close: on the sharing of femtocells,” in Proc. IEEE Int. Conf. on Computer Commun. (INFOCOM), Apr. 2011, pp. 116–20.
[7] D., Choi, P., Monajemi, S., Kang, and J., Villasenor, “Dealing with loud neighbors: the benefits and tradeoffs of adaptive femtocell access,” in Proc. IEEE Global Telecommun. Conf. (GLOBECOM), Nov.–Dec. 2008.
[8] S., Joshi, R., Cheung, P., Monajemi, and J., Villasenor, “Traffic-based study of femtocell access policy impacts on HSPA service quality,” in Proc. IEEE Global Telecommun. Conf. (GLOBECOM), Nov. 2009, pp. 1–6.
[9] “Initial Home NodeB coexistence simulation results,” Nokia Siemens Networks, 3GPP Document Reference R4-070902, 3GPP TSG-RAN WG4 Meeting 43bis, June 2007.
[10] “3rd Generation Partnership Project; Technical Specification Group Radio Access Networks; 3G Home NodeB Study Item Technical Report (Release 8),” 3GPP, 3GPP TR 25.820, Mar. 2008.
[11] “Open and closed access for Home NodeBs,” Nortel, Vodafone, 3GPP document Reference R4-071231, 3GPP TSG-RAN WG4 Meeting 44, Aug. 2007.
[12] D., López-Pérez, A., Valcarce, G. D. L., Roche, E., Liu, and J., Zhang, “Access methods to WiMAX femtocells: a downlink system-level case study,” in IEEE Singapore Int. Conf. on Commun. Systems (ICCS), Nov. 2008, pp. 1657–62.
[13] V., Chandrasekhar, J. G., Andrews, T., Muharemovic, Z., Shen, and A., Gatherer, “Power control in two-tier femtocell networks,” IEEE Trans. Wireless Commun., vol. 8, no. 8, pp. 4316–28, Aug. 2009.
[14] “Cisco visual networking index: global mobile data traffic forecast update, 2010–2015,” White Paper, Cisco, Feb. 2011.
[15] A., Khandekar, N., Bhushan, J., Tingfang, and V., Vanghi, “LTE advanced: heterogeneous networks,” in European Wireless Conference, June 2010, pp. 978–82.
[16] D., López-Pérez, A., Valcarce, A., Ladanyi, G., de la Roche, and J., Zhang, “Intracell handover for interference and handover mitigation in OFDMA two-tier macrocell-femtocell networks,” EURASIP J. Wireless Commun. Networking, vol. 2010 (2010), pp. 1–15, Feb. 2010.
[17] P., Tarasak, T. Q. S., Quek, and F. P. S., Chin, “Uplink timing misalignment in open and closed access OFDMA femtocell networks,” IEEE Commun. Lett., vol. 15, no. 9, pp. 926–8, Sep. 2011.
[18] T., Elkourdi and O., Simeone, “Outage and diversity-multiplexing trade-off analysis of closed and open-access femtocells,” in Proc. IEEE Global Telecommun. Conf. (GLOBECOM), Dec. 2010.
[19] O., Simeone, E., Erkip, and S., Shamai, “Robust communication against femtocell access failures,” in Proc. IEEE Inform. Theory Workshop (ITW), Oct. 2009, pp. 263–7.
[20] S., Barbarossa, A., Carfagna, S., Sardellitti, M., Omilipo, and L., Pescosolido, “Optimal radio access in femtocell networks based on Markov modeling of interferers' activity,” in Proc. IEEE Int. Conf. on Acoustics, Speech, and Sig. Proc. (ICASSP), May 2011, pp. 3212–15.
[21] S., Mukherjee, “UE coverage in LTE macro network with mixed CSG and open access femto overlay,” in Proc. IEEE Int. Conf. on Commun. (ICC), June 2011.
[22] S., Mukherjee, “Analysis of UE outage probability and macrocellular traffic offloading for WCDMA macro network with femto overlay under closed and open access,” in Proc. IEEE Int. Conf. on Commun. (ICC), June 2011.
[23] Y., Chen, J., Zhang, and Q., Zhang, “Utility-aware refunding framework for hybrid access femtocell network,” IEEE Trans. Wireless Commun., vol. 11, no. 5, pp. 1688–97, May 2012.
[24] Y. Y., Li, L., Yen, and E. S., Sousa, “Hybrid user access control in HSDPA femtocells,” in Proc. IEEE Global Telecommun. Conf. (GLOBECOM), Dec. 2010, pp. 679–83.
[25] V., Chandrasekhar, M., Kountouris, and J. G., Andrews, “Coverage in multi-antenna two-tier networks,” IEEE Trans. Wireless Commun., vol. 8, no. 10, pp. 5314–27, Oct. 2009.
[26] V., Chandrasekhar and J. G., Andrews, “Spectrum allocation in two-tier networks,” IEEE Trans. on Communications, vol. 57, no. 10, pp. 3059–68, Oct. 2009.
[27] M.-S., Alouini and A., Goldsmith, “Area spectral efficiency of cellular mobile radio systems,” IEEE Trans. Veh. Technol., vol. 48, no. 4, pp. 1047–66, July 1999.
[28] F., Baccelli, B., Blaszczyszyn, and P., Muhlethaler, “An ALOHA protocol for multihop mobile wireless networks,” IEEE Trans. Inform. Theory, vol. 8, no. 6, pp. 569–86, Feb. 2006.
[29] D. N., Knisely, T., Yoshizawa, and F., Favichia, “Standardization of femtocells in 3GPP,” IEEE Commun. Mag., vol. 47, no. 9, pp. 68–75, Sep. 2009.
[30] D. N., Knisely and F., Favichia, “Standardization of femtocells in 3GPP2,” IEEE Commun. Mag., vol. 47, no. 9, pp. 76–82, Sep. 2009.
[31] P., Humblet, B., Raghothaman, A., Srinivas, S., Balasubramanian, C., Patel, and M., Yavuz, “System design of cdma2000 femtocells,” IEEE Commun. Mag., vol. 47, no. 9, pp. 92–100, Sep. 2009.
[32] M., Yavuz, F., Meshkati, S., Nanda, A., Pokhariyal, N., Johnson, B., Raghothaman, and A., Richardson, “Interference management and performance analysis of UMTS/HSPA+ femtocells,” IEEE Commun. Mag., vol. 47, no. 9, pp. 102–9, Sep. 2009.