Multihop Cooperative Transmissions for Asymmetric Traffic Accommodation in CDMA/FDD Cellular Networks
The asymmetric trafc between uplink and downlink
over recent mobile communication systems has been conspicuous because
of providing new communication services. This paper proposes
an asymmetric trafc accommodation scheme adopting a multihop
cooperative transmission technique for CDMA/FDD cellular networks.
The proposed scheme employs the cooperative transmission
technique in the already proposed downlink multihop transmissions
for the accommodation of the asymmetric trafc, which utilizes
the vacant uplink band for the downlink relay transmissions. The
proposed scheme reduces the transmission power at the downlink
relay transmissions and then suppresses the interference to the uplink
communications, and thus, improves the uplink performance. The
proposed scheme is evaluated by computer simulation and the results
show that it can achieve better throughput performance.
[1] L. Chen, S. Yoshida, H. Murata, and S. Hirose, “A dynamic timeslot
assignment algorithm for asymmetric trafc in multimedia TDMA/TDD
mobile radio,” IEICE Trans. Fundamentals, vol. E81-A, no. 7, pp. 1358–
1366, July 1998.
[2] D. G. Jeong and W. S. Jeon, “CDMA/TDD system for wireless multimedia
service with trafc unbalance between uplink and downlink,” IEEE J. Select. Areas Commun., vol. 17, no. 5, pp. 939–946, May 1999.
[3] K. Mori and T. Kobayashi, “Downlink Transmission Power Control for CDMA/Shared–TDD Packet Communications in Cellular Environments,”
IEICE Trans. Commun., vol. E84-B, no. 6, pp. 1622–1630, June 2001.
[4] J. Nasreddine and X. Lagrange, “Time slot allocation based on a path gain division scheme for TD-CDMA TDD systems,” Proc. IEEE VTC2003-
Spring, vol.2, pp.1410–1414, April 2003.
[5] J. Nasreddine and X. Lagrange, “Performance of TD-CDMA systems
during crossed slots,” Proc. IEEE VTC2004-Fall, vol.2, pp.798–802, Sept. 2004.
[6] K. Mori, T. Nagaosa, and H. Kobayashi, “Uplink packet transmission
control for asymmetric trafc in CDMA/Shared–TDD cellular packet
communications,” IEICE Trans. Commun., vol. E86-B, no. 9, pp. 2620–
2627, Sept. 2003.
[7] Y. Kobayashi, K. Mori, and H. Kobayashi, “Asymmetric radio resource
assignment scheme for connection-less services in CDMA/shared–TDD
cellular packet Communications,” IEICE Trans. Fundamentals, vol. E88-
A, no. 7, pp. 1903–1911, July 2005.
[8] K. Mori, K. Naito, and H. Kobayashi, “Downlink multihop transmission
technique for asymmetric trafc accommodation in DS-CDMA/FDD
cellular communications,” IEICE Trans. Commun., Vol.E91-B, no.10,
pp.3122-3131, Oct. 2008
[9] K. Mori, K. Naito, H. Kobayashi, and H. Aghvami, “Asymmetric trafc
accommodation using adaptive cell sizing technique for CDMA/FDD
cellular packet communications,” IEICE Trans. Fundamentals, Vol.E90-
A, no.7, pp.1271-1279, July 2007
[10] Y-D. Lin and Y-C. Hsu, “Multihop cellular: a new architecture,” Proc.
IEEE INFOCOM2000, vol.3, pp.1273–1282, 2000.
[11] A. Nosratinia, T.E. Hunter, and A. Hedayat, “Cooperative communication
in wireless networks,” IEEE Commun. Mag., vol.42, no.10, pp.74-80,
Oct. 2004.
[12] A. Fujiwara, S. Takeda, H. Yoshino, T. Otsu, and Y. Yamao, “Capacity
improvement with a multi-hop access scheme in broadband CDMA
cellular systems,” IEICE Trans.Commun., vol.J-85-B, no.12, pp2073-
2079, Dec. 2002. (in Japanese)
[13] T. Nagasawa, K. Naito, K. Mori, and H. Kobayashi, “Transmission
power reduction scheme using multi-hop connection in CDMA cellular
systems with non-uniform trafc,” Proc. IEEE APWCS2005, pp.50–54,
Aug. 2005.
[14] E. Kudoh and F. Adachi, “Transmit power efciency of multi-hop MRC
diversity for a virtual cellular network,” IEICE Trans. Commun., vol.88-B,
no.9, pp.3643-3648, Oct. 2004.
[15] A. Goldsmith, Wireless communications, Cambridge University Press,
2005
[16] ETSI/SMG2, “The ETSI UMTS Terrestrial Radio Access (UTRA) ITUR
RTT Candidate Submission,” submitted to ITU-R TG 8/1 as a candidate
for IMT-2000, Oct. 1998.
[17] K. Mori, T. Kobayashi, T. Yamazato, and A. Ogawa, “Service fairness
in CDMA cellular packet systems with site diversity reception,” IEICE
Trans. Commun., vol.E82-B, no.12, pp.1964–1973, Dec. 1999.
[1] L. Chen, S. Yoshida, H. Murata, and S. Hirose, “A dynamic timeslot
assignment algorithm for asymmetric trafc in multimedia TDMA/TDD
mobile radio,” IEICE Trans. Fundamentals, vol. E81-A, no. 7, pp. 1358–
1366, July 1998.
[2] D. G. Jeong and W. S. Jeon, “CDMA/TDD system for wireless multimedia
service with trafc unbalance between uplink and downlink,” IEEE J. Select. Areas Commun., vol. 17, no. 5, pp. 939–946, May 1999.
[3] K. Mori and T. Kobayashi, “Downlink Transmission Power Control for CDMA/Shared–TDD Packet Communications in Cellular Environments,”
IEICE Trans. Commun., vol. E84-B, no. 6, pp. 1622–1630, June 2001.
[4] J. Nasreddine and X. Lagrange, “Time slot allocation based on a path gain division scheme for TD-CDMA TDD systems,” Proc. IEEE VTC2003-
Spring, vol.2, pp.1410–1414, April 2003.
[5] J. Nasreddine and X. Lagrange, “Performance of TD-CDMA systems
during crossed slots,” Proc. IEEE VTC2004-Fall, vol.2, pp.798–802, Sept. 2004.
[6] K. Mori, T. Nagaosa, and H. Kobayashi, “Uplink packet transmission
control for asymmetric trafc in CDMA/Shared–TDD cellular packet
communications,” IEICE Trans. Commun., vol. E86-B, no. 9, pp. 2620–
2627, Sept. 2003.
[7] Y. Kobayashi, K. Mori, and H. Kobayashi, “Asymmetric radio resource
assignment scheme for connection-less services in CDMA/shared–TDD
cellular packet Communications,” IEICE Trans. Fundamentals, vol. E88-
A, no. 7, pp. 1903–1911, July 2005.
[8] K. Mori, K. Naito, and H. Kobayashi, “Downlink multihop transmission
technique for asymmetric trafc accommodation in DS-CDMA/FDD
cellular communications,” IEICE Trans. Commun., Vol.E91-B, no.10,
pp.3122-3131, Oct. 2008
[9] K. Mori, K. Naito, H. Kobayashi, and H. Aghvami, “Asymmetric trafc
accommodation using adaptive cell sizing technique for CDMA/FDD
cellular packet communications,” IEICE Trans. Fundamentals, Vol.E90-
A, no.7, pp.1271-1279, July 2007
[10] Y-D. Lin and Y-C. Hsu, “Multihop cellular: a new architecture,” Proc.
IEEE INFOCOM2000, vol.3, pp.1273–1282, 2000.
[11] A. Nosratinia, T.E. Hunter, and A. Hedayat, “Cooperative communication
in wireless networks,” IEEE Commun. Mag., vol.42, no.10, pp.74-80,
Oct. 2004.
[12] A. Fujiwara, S. Takeda, H. Yoshino, T. Otsu, and Y. Yamao, “Capacity
improvement with a multi-hop access scheme in broadband CDMA
cellular systems,” IEICE Trans.Commun., vol.J-85-B, no.12, pp2073-
2079, Dec. 2002. (in Japanese)
[13] T. Nagasawa, K. Naito, K. Mori, and H. Kobayashi, “Transmission
power reduction scheme using multi-hop connection in CDMA cellular
systems with non-uniform trafc,” Proc. IEEE APWCS2005, pp.50–54,
Aug. 2005.
[14] E. Kudoh and F. Adachi, “Transmit power efciency of multi-hop MRC
diversity for a virtual cellular network,” IEICE Trans. Commun., vol.88-B,
no.9, pp.3643-3648, Oct. 2004.
[15] A. Goldsmith, Wireless communications, Cambridge University Press,
2005
[16] ETSI/SMG2, “The ETSI UMTS Terrestrial Radio Access (UTRA) ITUR
RTT Candidate Submission,” submitted to ITU-R TG 8/1 as a candidate
for IMT-2000, Oct. 1998.
[17] K. Mori, T. Kobayashi, T. Yamazato, and A. Ogawa, “Service fairness
in CDMA cellular packet systems with site diversity reception,” IEICE
Trans. Commun., vol.E82-B, no.12, pp.1964–1973, Dec. 1999.
@article{"International Journal of Electrical, Electronic and Communication Sciences:60574", author = "Kazuo Mori and Takeo Saga and Katsuhiro Naito and Hideo Kobayashi", title = "Multihop Cooperative Transmissions for Asymmetric Traffic Accommodation in CDMA/FDD Cellular Networks", abstract = "The asymmetric trafc between uplink and downlink
over recent mobile communication systems has been conspicuous because
of providing new communication services. This paper proposes
an asymmetric trafc accommodation scheme adopting a multihop
cooperative transmission technique for CDMA/FDD cellular networks.
The proposed scheme employs the cooperative transmission
technique in the already proposed downlink multihop transmissions
for the accommodation of the asymmetric trafc, which utilizes
the vacant uplink band for the downlink relay transmissions. The
proposed scheme reduces the transmission power at the downlink
relay transmissions and then suppresses the interference to the uplink
communications, and thus, improves the uplink performance. The
proposed scheme is evaluated by computer simulation and the results
show that it can achieve better throughput performance.", keywords = "asymmetric traffic, cooperative transmissions, multihop transmissions, CDMA, FDD, cellular systems", volume = "4", number = "11", pages = "1658-7", }
