Dynamic resource management technique with advance reservation over QoS-provisioned networks

Works on QoS-enabled IP networks have led to two distinct approaches: the integrated service (IntServ) and the differentiated service (DiffServ) architectures. To address the tradeoff between service guarantee and scalability, a resource manager (a.k.a. bandwidth broker: BB) can be employed to complement the IntServ/RSVP with the DiffServ in the pursuit of end-to-end QoS. One major component of the resource manager is a decision mechanism for resource allocation, which enables hosts to request per-flow, quantifiable resources along the end-to-end path and to obtain feedback regarding the acceptance. However, most of existing resource manager implementations are still adopting the decision mechanism that makes a decision on the immediate availability of resources, especially bandwidth. Considering the variations in the demand over the time, we can easily expect some level of inefficiency due to this in terms of resource utilization and management. Thus, we are investigating the methods to support the request scheduling and advance reservation for the dynamic resource management. We use a time slot manager to ensure that the committed resources never exceed a specified limit and to predict the unused (but reserved) bandwidth. Network simulations are conducted to evaluate the enhanced performance of the proposed mechanism (i.e., with respect to the acceptance rate, the resource utilization, and others).

[1]  Parameswaran Ramanathan,et al.  Proportional differentiated services: delay differentiation and packet scheduling , 2002, TNET.

[2]  D. Estrin,et al.  RSVP: a new resource reservation protocol , 2001 .

[3]  Douglas S. Reeves,et al.  On-line dynamic bandwidth allocation , 1997, Proceedings 1997 International Conference on Network Protocols.

[4]  David L. Black,et al.  An Architecture for Differentiated Service , 1998 .

[5]  Klara Nahrstedt,et al.  A distributed resource management architecture that supports advance reservations and co-allocation , 1999, 1999 Seventh International Workshop on Quality of Service. IWQoS'99. (Cat. No.98EX354).

[6]  Manish Mahajan,et al.  Active resource management for the differentiated services environment , 2004 .

[7]  Warren Smith,et al.  Scheduling with advanced reservations , 2000, Proceedings 14th International Parallel and Distributed Processing Symposium. IPDPS 2000.

[8]  J. Walrand,et al.  DYNAMIC BANDWIDTH ALLOCATION FOR ATM SWITCHES , 1996 .

[9]  Zhi-Li Zhang,et al.  Decoupling QoS control from core routers: a novel bandwidth broker architecture for scalable support of guaranteed services , 2000, SIGCOMM.

[10]  Giorgio Ventre,et al.  Distributed advance reservation of real-time connections , 1997, Multimedia Systems.

[11]  Van Jacobson,et al.  An Expedited Forwarding PHB , 1999, RFC.

[12]  Zheng Wang,et al.  An Architecture for Differentiated Services , 1998, RFC.

[13]  Ibrahim Khalil,et al.  Implementation of a bandwidth broker for dynamic end-to-end resource reservation in outsourced virtual private networks , 2000, Proceedings 25th Annual IEEE Conference on Local Computer Networks. LCN 2000.

[14]  Ion Stoica,et al.  Providing guaranteed services without per flow management , 1999, SIGCOMM '99.

[15]  Fred Baker,et al.  Assured Forwarding PHB Group , 1999, RFC.

[16]  Giorgio Ventre,et al.  Distributed advance reservation of real-time connections , 1997, Multimedia Systems.

[17]  Olov Schelén,et al.  Advance reservations for predictive service in the Internet , 1997, Multimedia Systems.

[18]  Susana Sargento,et al.  Call Admission Control in IP networks with QoS support , 2001 .

[19]  Scott Shenker,et al.  Integrated Services in the Internet Architecture : an Overview Status of this Memo , 1994 .