Carrier allocation method in multi cell orthogonal frequency...

Details Carrier allocation method in multi cell orthogonal frequency... Carrier allocation method in multi cell orthogonal frequency...

2011-08-30

2011-08-30

Juntima, Nittaya (Department: 2462)

Multiplex communications

Generalized orthogonal or special mathematical techniques

C370S252000, C370S343000, C370S436000

Reexamination Certificate

active

08009549

ABSTRACT:
Provided is a carrier allocation method in a multi cell OFDMA system capable of improving the system capacity and the bit error rate performance. In the method, a user terminal U which has received broadcast information (S101) uses an empty carrier to transmit a known symbol to a base station device (S103). The base station device estimates an average channel gain of an empty carrier block by using the received known symbol (S104), compares the channel gain sizes of the respective carrier blocks according to the estimated average channel gain and allocates a carrier block having a large channel gain to the user terminal (S105), and compares channel gains of the respective carriers in the carrier block allocated to the user terminal and selects a carrier having a channel gain lower than a predetermined threshold value (S106).

REFERENCES:
patent: 6181683 (2001-01-01), Chevillat
patent: 6904283 (2005-06-01), Li
patent: 6947748 (2005-09-01), Li
patent: 7072315 (2006-07-01), Liu
patent: 7355962 (2008-04-01), Li et al.
patent: 7567625 (2009-07-01), Oh et al.
patent: 7710918 (2010-05-01), Jung et al.
patent: 2002/0034158 (2002-03-01), Wang
patent: 2002/0147017 (2002-10-01), Li
patent: 2003/0050032 (2003-03-01), Masaki
patent: 2004/0228283 (2004-11-01), Naguib
patent: 2005/0099937 (2005-05-01), Oh et al.
patent: 1 351 787 (2000-08-01), None
patent: 1 504 024 (2002-02-01), None
patent: 1092436 (2002-10-01), None
patent: 1 404 291 (2003-03-01), None
patent: 2002-111627 (2002-04-01), None
patent: 2004-523934 (2004-08-01), None
patent: 2004-529524 (2004-09-01), None
patent: 2004-537875 (2004-12-01), None
patent: 2005-502218 (2005-01-01), None
patent: 2005-142935 (2005-06-01), None
patent: 00/49782 (2000-08-01), None
patent: 02/73870 (2002-02-01), None
patent: 2004/105294 (2004-12-01), None
patent: 2005/018186 (2005-02-01), None
Cheong Yui Wong et al., “A Real-time Sub-carrier Allocation Scheme for Multiple Access Downlink OFDM Transmission”, Proceedings of IEEE 50thVehicular Technology Conference,1999, p. 1124-1128.
Chinese Office Action, dated Feb. 12, 2010.
International Search Report dated Feb. 13, 2007.
3GPP TSG-RAN Working Group 1 #41, Tdoc R1-050390, ZTE, “EUTRA Uplink Multiple Access for Downlink and Uplink,” May 2005, pp. 1-6.
3GPP TSG-RAN WG1 Ad Hoc on LTE, R1-050590, NTT DoCoMo, “Physical channels and multiplexing in evolved UTRA downlink,” Jun. 2005, pp. 1-24.
3GPP TSG-RAN WG1 Ad Hoc on LTE, R1-050591, NTT DoCoMo, “Physical channels and multiplexing in evolved UTRA uplink,” Jun. 2005, pp. 1-21.

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