Title:
ADAPTIVE DATA RATE DETERMINATION FOR A REVERSE LINK IN A COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO2004082228
Kind Code:
A3
Abstract:
A method and apparatus for determining the data rate of a reverse link communication of an access terminal includes receiving a reverse activity bit (RAB) from an access point in the communication system, and passing the RAB to a digital filter to produce a filtered RAB. The reverse link data rate is determined based on the filtered value of the RAB. Furthermore, a processor in the access terminal may determine whether the access terminal is in an idle mode, and passing a non-busy state value of the RAB to the digital filter when the access terminal is in the idle mode. The filtered RA may be compared to a threshold to determine a mode of reverse link data rate determination. The mode defines a set of criteria for an aggressiveness level of increasing or decreasing the reverse link communication data rate. The processor, therefore, determines the data rate based on the filtered reverse activity bit in accordance with the determined mode.
Inventors:
LOTT CHRISTOPHER GERARD (US)
AU JEAN PUT LING (US)
AU JEAN PUT LING (US)
Application Number:
PCT/US2004/006755
Publication Date:
December 02, 2004
Filing Date:
March 05, 2004
Export Citation:
Assignee:
QUALCOMM INC (US)
LOTT CHRISTOPHER GERARD (US)
AU JEAN PUT LING (US)
LOTT CHRISTOPHER GERARD (US)
AU JEAN PUT LING (US)
International Classes:
H04J13/00; H04L12/56; H04W28/22; (IPC1-7): H04L12/56; H04Q7/22; H04L1/00
Foreign References:
| EP0912016A2 | 1999-04-28 | |||
| US6452915B1 | 2002-09-17 |
Other References:
YOUNG-UK CHUNG ET AL: "An efficient reverse link data rate control scheme for 1xEV-DV system", VTC FALL 2001. IEEE 54TH. VEHICULAR TECHNOLOGY CONFERENCE. PROCEEDINGS. ATLANTIC CITY, NJ, OCT. 7 - 11, 2001, IEEE VEHICULAR TECHNOLGY CONFERENCE, NEW YORK, NY : IEEE, US, vol. VOL. 1 OF 4. CONF. 54, 7 October 2001 (2001-10-07), pages 820 - 823, XP010562543, ISBN: 0-7803-7005-8
3GPP2 C: "cdma2000 High Rate Packet Data Air Interface Specification C.S0024", 3GPP2, 12 September 2000 (2000-09-12), XP002206456
YEO W Y ET AL: "Enhanced rate control scheme for 1xEV-DO reverse traffic channels", ELECTRONICS LETTERS, IEE STEVENAGE, GB, vol. 39, no. 23, 13 November 2003 (2003-11-13), pages 1677 - 1679, XP006024425, ISSN: 0013-5194
3GPP2 C: "cdma2000 High Rate Packet Data Air Interface Specification C.S0024", 3GPP2, 12 September 2000 (2000-09-12), XP002206456
YEO W Y ET AL: "Enhanced rate control scheme for 1xEV-DO reverse traffic channels", ELECTRONICS LETTERS, IEE STEVENAGE, GB, vol. 39, no. 23, 13 November 2003 (2003-11-13), pages 1677 - 1679, XP006024425, ISSN: 0013-5194
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