Method for ATM communication statistical multiplexing

• US 6,741,560 B1
• Filed: 02/09/2000
• Issued: 05/25/2004
• Est. Priority Date: 08/13/1997
• Status: Expired due to Term

• Current Assignee: RPX Corporation
• Original Assignee: Siemens AG
• Inventors: Wallmeier, Eugen
• Primary Examiner(s): Hsu, Alpus H.
• Assistant Examiner(s): SHAND, ROBERTA A
• Application Number:
  US09/485,437
• Time in Patent Office: 1,567 Days
• Field of Search: 370/229, 370/230, 370/231, 370/232, 370/233, 370/234, 370/389, 370/391, 370/395.1, 370/477, 370/412, 370/413, 370/414, 370/468
• US Class Current: 370/230
• CPC Class Codes: H04L 12/5602 Bandwidth control in ATM Networks, e.g. leaky bucket
• CPC Class Codes: H04L 2012/5614 User Network Interface
• CPC Class Codes: H04L 2012/5632 Bandwidth allocation
• CPC Class Codes: H04L 2012/5684 Characteristics of traffic flows
• CPC Class Codes: H04Q 11/0478 Provisions for broadband connections

Abstract

In ATM connections, a number of connections are usually transmitted over common connecting segments. Potentially newly added connections are allowed based on the measure of decisions made by acceptance algorithms. Knowledge of the momentarily reserved bandwidth is estimated step-by-step with the setup or release of connections.

Claims

1. A method for statistically multiplexing a plurality of ATM connections, the plurality of ATM connections being conducted via a common connecting line having an overall effective bandwidth reserved for conducting the plurality of ATM connections and utilizing an acceptance algorithm that decides, based on acceptance criteria and a prescribed bandwidth, whether potential additional connections can be accepted on the common connecting line, comprising:

setting the overall effective bandwidth equal to an initial value;

determining the overall effective bandwidth on a step-by-step basis with occurrence of at least one of a setup of a connection and a release of a connection;

starting the acceptance algorithm during every step; and

modifying the overall effective bandwidth by at least one of a first traffic parameter and a second traffic parameter based on at least one of the acceptance criteria, wherein

the at least one of the acceptance criteria for the setup of a connection is configured such that when the overall effective bandwidth with a potential additional connection is adequate, the overall effective bandwidth is increased by the amount of the first traffic parameter and the result is set as a new overall effective bandwidth; and

when the overall effective bandwidth with a potential additional connection is not adequate, the overall effective bandwidth is increased by the amount of the second traffic parameter and the result is set as the new overall effective bandwidth.

2. The method according to claim 1, wherein

the at least one of the acceptance criteria for the release of a connection is configured such that when the overall effective bandwidth with the released connection is adequate, the overall effective bandwidth is decreased by the amount of the second traffic parameter and the result is set as the new overall effective bandwidth; and

when the overall effective bandwidth with the released connection is not adequate, the overall effective bandwidth is decreased by amount of the first traffic parameter and the result is set as the new overall effective bandwidth.

3. The method according to claim 1, wherein the first traffic parameter is a sustainable cell rate and the second traffic parameter is a peak cell rate.

4. The method according to claim 1, wherein the acceptance algorithm is started only once for each potential additional connection.