NETWORK FOR UTILIZING SIP(SESSION INITIATION PROTOCOL) FOR IDENTIFYING USER EQUIPMENT RESOURCE RESERVATION/SETUP PROTOCOL CAPABILITIES, PARTICULARLY CONCERNED WITH PROVIDING APPARATUS FOR DEFINING AND EXCHANGING RSVP CAPABILITIES OF UE AND GGSN, AND MECHANISM FOR NEGOTIATING DESIRABLE RSVP OPERATING MODE ADAPTING SIP

摘要

PURPOSE: A network for utilizing sip for identifying user equipment resource reservation/setup protocol capabilities is provided to provide mechanism enabling an RSVP-capable UE and GGSN(Gateway GPRS Support Node) to inform mutual RSVP(Resource Reservation Protocol) capabilities before random communication is generated by using RSVP. CONSTITUTION: An apparatus includes an originating network device for communication with an originating user equipment and a terminating network device for communication with a terminating user equipment. The apparatus performs the communication using TD-SCDMA(Time Division Synchronous Code Division Multiple Access). The originating network device includes a unit using an SIP(Session Initiating Protocol) to represent an intended QoS(Quality of Service) responding to a call set procedure. The terminating network device includes a unit responding to the SIP in the case that the terminating network device can support the intended QoS, and another unit rejecting the call in the case that the terminating network device and the terminating network device can not support the intended QoS. The rejecting unit includes a unit for providing a message obviously displaying reasons to reject the call.