| | Hemant Chaskar Rajeev Koodli Nokia Research Center Nokia Research Center |
 | | GPRS Tunneling Protocol (GTP) implemented at SGSN and GGSN is responsible for performing these tasks of encapsulation at GGSN and mapping onto appropriate radio access bearer at SGSN. |
 | | Preliminary deployment of GPRS will be for packet data services of best-effort nature, such as WWW, email, FTP etc. As more and more communication services, including real-time services, are offered over IP, it becomes critical for the GPRS network to support Quality of Service (QoS) for data transfer. |
 | | The DiffServ QoS architecture [9] is based on a model where traffic entering a network domain is classified and possibly conditioned at the boundaries of the network domain, and assigned to different behavior aggregates. |
| www.isoc.org /isoc/conferences/inet/01/CD_proceedings/T56/MPLSDiff.htm (3436 words) |