US008018955B2 (12) United States Patent (10) Patent N0.: US 8,018,955 B2 Agarwal et a]. (45) Date of Patent: Sep. 13, 2011 (54) PROVIDING DYNAMIC CHANGES TO 6,775,273 B1 8/2004 Kung et al. PACKET FLOWS 6,778,494 B1 8/2004 Mauger et a1. 6,810,259 B1 10/2004 Zhang 6,847,991 B1 1/2005 Kurapati (75) Inventors: Kaitki Agarwal, Westford, MA (US); 6,853,630 B1 2/2005 Manning Raj at Ghai, Sandwich, MA (US) 6,854,014 B1 2/2005 Amin et al. 6,888,821 B2 * 5/2005 Rasanen et al. ............. .. 370/352 (73) Assignee: Starent Networks LLC, Wilmington, 6,973,309 B1 12/2005 Rygula et 31. DE (US) 6,978,380 B1 12/2005 Husain et al. (Continued) (*) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 FOREIGN PATENT DOCUMENTS U.S.C. 154(b) by 0 days. EP 1414212 4/2004 (21) Appl. No.: 11/953,000 (Continued) (22) Filed: Dec. 7, 2007 OTHER PUBLICATIONS <http://www.3gpp.org/ftp/Specs/html-inf0/24229.htm> printed on (65) Prior Publication Data Dec. 5, 2009. US 2008/0137541A1 Jun. 12, 2008 (Continued) Related US. Application Data Primary Examiner * Salman Ahmed (60) Provisional application No. 60/873,493, ?led on Dec. Assistant Examiner * Peter Chau 7, 2006. (74) Attorney, Agent, or Firm *Wilmer Cutler Pickering Hale and Dorr LLP (51) Int. Cl. H04L 12/28 (2006.01) (57) ABSTRACT H04L 12/56 (2006.01) Systems and methods for providing dynamic changes to a (52) US. Cl. ...... .. 370/401; 370/235; 370/236; 370/310; packet ?ow in a communication network are described. The 370/395.2; 370/395.21; 709/228; 709/231 dynamic changes can include upgrading and downgrading (58) Field of Classi?cation Search ...................... .. None quality of service (QoS), adapting the stream to a receiving See application ?le for complete search history. device, modifying the stream to counter-act changes in an air interface, and modifying the stream to accommodate an inter (56) References Cited technology handover. 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