System and process for allocating flow capacity in a network

• US 7,113,990 B2
• Filed: 06/10/2005
• Issued: 09/26/2006
• Est. Priority Date: 05/29/2002
• Status: Expired due to Fees

• Current Assignee: Distributed Management Information Systems, Inc. (Wavelength Corp.)
• Original Assignee: Distributed Management Information Systems, Inc. (Wavelength Corp.)
• Inventors: Shaffner, Jeremy A., Yardley, Timothy Michael, Scifres, Mark Alan
• Primary Examiner(s): LIN, WEN TAI
• Application Number:
  US11/149,577
• Publication Number:
  US 20050226153A1
• Time in Patent Office: 473 Days
• Field of Search: None
• US Class Current: 709/224
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/11 Identifying congestion
• CPC Class Codes: H04L 47/20 Traffic policing

Abstract

A flow allocation system includes a set of collection agents, a set of restriction agents, a processing agent and at least one usage limit selected from a volume limit set and a rate limit set. The flow allocation system is implemented between a set of usage devices and a service network. The collection agents monitor flows between the usage devices and the service network. The processing agent sums the flows for each of the usage devices, determines whether any of the summed flows reach the usage limit, and selects at least one flow restriction rule for the subset of usage devices reaching the usage limit. The set of restriction agents implement the flow restriction control rule for the subset of usage devices reaching the usage limit. The processing agent also uses exception handling techniques to shift usage quotas for the usage devices.

Claims

1. A method for allocating bandwidth to a set of users accessing a computer network through a portal, comprising the steps of:

(a) defining a set of bandwidth rules for a set of restriction agents, said defined set of bandwidth rules including a plurality of rate-limit rules, wherein said rate-limit rules include a range of bandwidth limits less than a maximum allowable bandwidth;

(b) defining a single data volume limit for a time period;

(c) registering a set of communication devices with the set of users via a registration server, wherein each of said communication devices has a unique identity and each one of the users individually registers at least one communication device;

(d) associating the set of users with said set of communication devices accessing the portal, wherein the portal comprises at least one restriction agent in said set of restriction agents;

(e) communicating a set of data flows through said set of restriction agents between the set of users and the computer network, wherein said communicating step further comprises the steps of;

(i) communicating a plurality of data headers in a set of sampling periods during said time period, and

(ii) repeating said communicating step for a series of sequential time periods as a moving time frame;

(f) monitoring said communicated set of data flows, wherein said monitoring step further comprises the steps of;

(i) communicating said data headers to a processing agent during each of said sampling periods, and

(ii) summarizing historical information about said data flows for each of said sequential time periods; and

(g) selecting a set of bandwidth rules from said defined set of bandwidth rules, said selected set of bandwidth rules being determined by said processing agent, and wherein said selecting step comprises the steps of

(i) allocating said monitored set of data flows to the set of users according to said association between the set of users and said set of communication devices,

(ii) computing a data flow volume for each of the users during said time period according to said data headers,

(iii) comparing said computed data flow volume with said single data volume limit for each of the users,

(iv) identifying a set of the users having said computed data flow volume exceeding said data volume limit,

(v) adding said plurality of rate limit rules to said selected set of bandwidth rules for each of the users in said identified set of users, and

(vi) transmitting said selected set of bandwidth rules to said set of restriction agents; and

(h) allocating bandwidth to said data flows according to said selected set of bandwidth rules transmitted from said processing agent to said restriction agents, wherein said data flows for said identified set of users are respectively within said plurality of rate-limit rules.

2. The method of claim 1 wherein said step for selecting said set of bandwidth rules further comprises the steps of:

ranking each of the users in said identified set of users according to said computed data flow volume for each of the users;

dividing said identified set of users into a plurality of sub-divided sets of users according to said ranking of the users;

incrementing said moving time frame; and

repeating said computing, comparing, identifying, ranking, dividing, adding, and transmitting steps for each of said series of sequential time periods.

3. A flow allocation system for a set of usage devices accessing a service network through a portal, comprising:

a set of restriction agents in-line with the portal and providing the set of usage devices with a set of flow levels to the service network through the portal, wherein a set of flows is transferred through said restriction agents between the service network and the usage devices, and wherein the portal to the service network has a total maximum flow rate and said set of restriction agents allocates a portion of said total maximum flow rate to said flows according to a set of flow restriction rules and thereby defining said set of flow levels to the service network;

a set of collection agents monitoring said set of flows and defining monitored flow information for said set of flows according to each of said usage devices; and

a processing agent in communication with said set of restriction agents and said set of collection agents, said processing agent having a flow allocation module that generates said flow restriction rules according to a relationship between said set of flows and a set of volume limits, said set of volume limits having a correspondence with said set of usage devices, said flow allocation module further comprising a volume calculator interconnected with a restriction rule generator, wherein said volume calculator sums a flow volume during a time period for each of the usage devices according to said monitored flow information and identifies a subset of usage devices with said flow volume exceeding said corresponding volume limits, and wherein said restriction rule generator creates said set of flow restriction rules for each of said identified usage devices and communicates said set of flow restriction rules to said set of restriction agents corresponding with said identified usage devices, said set of flow restriction rules being formed by associating at least one flow restriction control rule to said set of identified set of usage devices, wherein said flow restriction control rule commands an adjustment to said portion of said total maximum flow rate for each of said identified set of usage devices.

4. The flow allocation system according to claim 3, wherein said first maximum flow rate is less than 20% of a total maximum flow rate between the usage devices and the accessed network.

5. The flow allocation system according to claim 3, wherein said second maximum flow rate is greater than a proportional flow rate, said proportional flow rate being equal to a total maximum flow rate between the usage devices and the accessed network divided by at least a total number of the usage devices in said second subset of usage devices.

6. The flow allocation system according to claim 4, wherein said processing agent ranks each of the usage devices in an identified set of usage devices according to said flow volume.