Medium access control protocol for OFDM wireless networks

Details Medium access control protocol for OFDM wireless networks Medium access control protocol for OFDM wireless networks

2005-09-08

2009-06-23

Pham, Chi H (Department: 2416)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S337000

Reexamination Certificate

active

07551578

ABSTRACT:
A medium access contention protocol that is highly beneficial in wireless networks and particularly in wireless networks that employ a fixed minimum burst size such as OFDM wireless networks. In one embodiment, a MAC protocol is a demand-assigned protocol that maximizes utilization of the bus medium (the allocated frequency spectrum.) Each data communication device (DCD) in the network communicates with a central access point (AP). Multiple DCDs may request access from the AP in the same request access (RA) burst. Each of the multiple DCDs transmits its access request to the AP within a frequency domain channel in the RA burst that is orthogonal to the frequency domain channels used by the other DCDs requesting access. Each DCD includes channel training information in the access request burst to allow the AP and/or DCD to adapt to rapid variations in channel characteristics.

REFERENCES:
patent: 5282222 (1994-01-01), Fattouche et al.
patent: 5537414 (1996-07-01), Takiyasu et al.
patent: 5640395 (1997-06-01), Hamalainen et al.
patent: 5732113 (1998-03-01), Schmidl et al.
patent: 5802044 (1998-09-01), Baum et al.
patent: 5859959 (1999-01-01), Kimball et al.
patent: 6005840 (1999-12-01), Awater et al.
patent: 6192026 (2001-02-01), Pollack et al.
N. Abramson, “The Aloha System—Another Alternative for Computer Communications,” 1970 Fall Joint Computer Conference, AFIPS Conference Proceedings, AFIPS Press, Montvale, NJ, vol. 37, pp. 281-285 (1970).
M. Karol et al., “An Efficient Demand-assignment Multiple Access Protocol for Wireless Packet (ATM) Networks,” ACM/Baltzer Wireless Networks, vol. 1, No. 3, pp. 267-279 (1995).
A. Acampora, “An Introduction to Broadband Networks,” Plenum Press, New York, NY, pp. 53-55. (1994).
K. Jacobsen et al., “A Discrete Multitone-based Network Protocol for Multipoint-to-point Digital Communications in the CATV Reverse Channel,” In 1995 Canadian Cable Television Association (CCTA) Technical Papers, pp. 121-139 (May 1995).
A. Peled et al., “Frequency Domain Data Transmission Using Reduced Computational Complexity Algorithms,” IEEE International Conference on Acoustics, Speech and Signal Processing—Apr. 9-11, 1980, Fairmont Hotel, Denver, CO, vol. 1 of 3, pp. 964-967 (Apr. 1990).
M. Karol et al., “An Efficient Demand-assignment Multiple Access Protocol for Wireless Packet (ATM) Networks,” Baltzer Journals (Jul. 1995).
C. Ostberg et al., “Multiaccess Methods Based on OFDM,” Telia Research AB, Communication System, Aurorum 6 S-977, Lulea, Sweden, pp. 1-3.

Affiliated with

Also associated with

Rating

Medium access control protocol for OFDM wireless networks does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Medium access control protocol for OFDM wireless networks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Medium access control protocol for OFDM wireless networks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4110298