Resource reservation

Details Resource reservation Resource reservation

1998-11-19

2003-12-09

Olms, Douglas (Department: 2661)

Multiplex communications

Communication techniques for information carried in plural...

Adaptive

C370S310200, C370S443000

Reexamination Certificate

active

06661806

ABSTRACT:

TECHNICAL FIELD OF THE INVENTION
This invention relates to the field of resource reservation, and in particular to a method of controlling access to a communications network, and to components of a network using such a method.
DESCRIPTION OF RELATED ART
The Internet is a communications network which is becoming widely available. The Internet provides a “best effort” bearer service. That is, the user receives the best service available at the time he requests it, but no commitments are given to the user in terms of available bandwidth, transit delay, or packet loss. The Internet is particularly useful in data communications applications, but is of limited use for telecommunications applications which require guaranteed bandwidth availability, and specify maximum values for the transit delay and loss of data. The Internet cannot usually guarantee the required quality of service.
One conventional way of achieving resource reservation, to be able to provide a required quality of service commitment, is to use connection states to store information in the network nodes about bandwidth, buffer parameters, connection identity and status. However, an advantage of the Internet is that it is a connectionless network, which therefore cannot use this technique without sacrificing the simplicity of the Internet.
One conventional way of achieving bearer service differentiation, in a connectionless network, is to use a set of priority bits in the packet header. However, in a public connectionless network, it is still necessary to control how many connections use the highest available priority. If every connection uses the highest available priority, the network can still in effect only offer a best effort service to the users.
A problem remains, therefore, as to how to control admission to the network.
TECHNICAL FIELD OF THE INVENTION
The present invention seeks to solve the problem of achieving admission control and resource reservation in a connectionless network.
According to the invention, each transmission by a user across the network includes a message sent to the user from the network. The message includes information about the priority level of the transmission, based on the user's contract with the network provider, and can subsequently be extracted by the network to determine how to handle the transmission.
Thus, rather than rely on the network being able to detect the status of the connection, the relevant information is transmitted by the user with the data transmission, and can be extracted by the network as required.
In preferred embodiments, this information can be used for admission control and for routing purposes.
For a better understanding of the present invention, and to show how it may be brought into effect, reference will now be made, by way of example, to the accompanying drawings.


REFERENCES:
patent: 4813037 (1989-03-01), Debuysscher et al.
patent: 5315586 (1994-05-01), Charvillat
patent: 5367517 (1994-11-01), Cidon et al.
patent: 5535207 (1996-07-01), Dupont
patent: 5574724 (1996-11-01), Bales et al.
patent: 5680398 (1997-10-01), Robinson
patent: 5742592 (1998-04-01), Scholefield et al.
patent: 5812526 (1998-09-01), Chang et al.
patent: 5825811 (1998-10-01), Souissi
patent: 5842007 (1998-11-01), Tarsky et al.
patent: 5878029 (1999-03-01), Hasegawa et al.
patent: 5953338 (1999-09-01), Ma et al.
patent: 5970062 (1999-10-01), Bauchot
patent: 6021132 (2000-02-01), Muller et al.
patent: 6081525 (2000-06-01), Christie et al.
patent: 6091740 (2000-07-01), Karasawa
patent: 6205154 (2001-03-01), Schmidt et al.
patent: 6205484 (2001-03-01), Eriksson
patent: 6216006 (2001-04-01), Scholefield et al.
patent: 6236656 (2001-05-01), Westerberg et al.
patent: 6243387 (2001-06-01), Hjalmtysson et al.
patent: 6243391 (2001-06-01), Holmquist
patent: 6400701 (2002-06-01), Lin et al.
patent: 6434183 (2002-08-01), Kockmann et al.
patent: 6438136 (2002-08-01), Bahl
patent: 6463075 (2002-10-01), Hoebeke
patent: 6480506 (2002-11-01), Gubbi
patent: 0522391 (1993-01-01), None
patent: 0534493 (1993-03-01), None
patent: 0603099 (1994-06-01), None
patent: 0609654 (1994-08-01), None
patent: 0719012 (1996-06-01), None
patent: WO 97/50213 (1997-12-01), None
Long, K.; Patents Act 1977-Search Report Under Section 17(5); Jun. 23, 1998; App. No. GB 9724697.9; pp. 1-3.
Lievens, K.; International Search Report; Apr. 27, 1999; App. No. PCT/EP98/07354; pp. 1-3.
Eriksson, A.; “Real-Time Services Over the Internet,” XVI World Telecom Congress Proceedings; Sep. 21, 1997; pp. 173-179.
White, P.P.; “RSVP and Integrated Services in the Internet: A Tutorial,” IEEE Communications Magazine; May 1997; pp. 100-106.
Ramakrishnan, K.K. and Newman, P.; “ATM Flow Control: Inside the Great Debate,” Data Communications, No. 8, Jun. 24, 1995; pp. 111-114, 116, 118, 120.

Affiliated with

Also associated with

Rating

Resource reservation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Resource reservation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Resource reservation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3166333