Hybrid multiple access protocol for wireless frequency hopping m

Details Hybrid multiple access protocol for wireless frequency hopping m Hybrid multiple access protocol for wireless frequency hopping m

1996-10-04

1998-10-06

Ton, Dang

Multiplex communications

Communication over free space

Combining or distributing information via time channels

370347, H04L 12403

Patent

active

058188282

ABSTRACT:
In a wireless frequency hopping communication system, a protocol, which does not employ carrier sense or collision detect, is provided for allocating bandwidth fairly and efficiently under varying load conditions, wherein a node is permitted random access to the medium bandwidth under light loading conditions and wherein under higher loading conditions a time/bandwidth allocation is made with a portion of the allocation dedicated to inband backhaul tasks by introducing a form of polling, the size of the reserved time/bandwidth allocation being selected based on traffic pattern. Under such heavy load conditions, non-slave traffic is allocated bandwidth in slots as pseudo-slave packets to guarantee a share of the bandwidth. Depending on the activity of the population of packets, including responsiveness and trend of responsiveness, the relative size of the slots is determined. Random access is always permitted for certain classes of packets, namely handshake packets, which are used to establish the master/slave relationships between nodes, no matter how a node is loaded. Once a master/slave relationship is established, a slave is only allowed to use the random access method to inform its master that it has data pending for transmission to the network when the node has a light load. Polling is always employed when the node at least has one active slave. According to one aspect of the invention, the size of the reserved allocation is based on a variable heartbeat of a multicast poll. Further in accordance with the invention, a handshaking between master and slave permits transition between operation in a random access mode and a polled mode.

REFERENCES:
patent: 5574979 (1996-11-01), West
Kahn, Robert E., "The organization of computer resources into a packet radio network", AFIPS Conference Proceedings, 1975 National Computer Conference, May 19-22, 1975, Anaheim, California, pp. 177-186.
Kahn, Robert E., "The Organization of Computer Resources into a Packet Radio Network", IEEE Transactions on Communications, vol. COM-25, No. 1, Jan. 1977, pp. 169-178.
Kahn, Robert E., "Advances in Packet Radio Technology", Proceedings of the IEEE, vol. 66, No. 11, Nov. 1978, pp. 1468-1496.
Tobagi, Fouad A., "Multiaccess Link Control", Computer Network Architectures and Protocols, Second Edition, Carl A. Sunshine, editor, 1989, Chapter 6, Section V, pp. 168-184.
Tobagi, Fouad A., "Modeling and Performance Analysis of Multihop Packet Radio Networks", Proceedings of the IEEE, vol. 75, No. 1, Jan. 1987, pp. 135-155.

Affiliated with

Also associated with

Rating

Hybrid multiple access protocol for wireless frequency hopping m does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hybrid multiple access protocol for wireless frequency hopping m, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hybrid multiple access protocol for wireless frequency hopping m will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-86910