Sep. 16, 1997, now Pat. No. 6,839,340. network, wherein the authorization and account
control object maintains a Substantially real time record of user (51) Int. Cl. accounts and …

Session Initiation Protocol (SIP) is currently receiving much attention and seems to be the
most promising candidate as a signaling protocol for the current and future IP telephony …

As third-generation (mobile) networks (3G networks) become a commercial reality, strong
movements are emerging in the direction of a common infrastructure based on the Internet …

The need for real-time services support over the Internet drives research efforts toward the
provisioning of quality of service (QoS) guarantees in IP networks. Among the various …

Abstract 1 The IP multimedia Subsystem (IMS) is a network functional architecture that is
seen as a promising solution for facilitating multimedia service creation and deployment, as …

The 3GPP specifies the IP multimedia subsystem (IMS) to provide several kinds of
multimedia services in UMTS Release 5 and later releases. Interworking at the service layer …

(57) ABSTRACT A switched telephone network is arranged in a manner to enable packet
voice communication between telephone ter minals via multiple redundant packet switched …

4,054,756 A 10, 1977 Comella et al. 4,100,377 A 7/1978 Flanagan 4,191,860 A 3, 1980
Weber 4,201,891 A 5, 1980 Lawrence et al. 4,313,036 A 1, 1982 Jabara et al. 4,375,097 A …

With the evolution of QoS-capable 3G wireless networks, the wireless community has been
increasingly looking for a framework that can provide effective network-independent end-to …

ABSTRACT A VANET is composed of vehicles, equipped with short range wireless
communication capabilities, which cooperate to form a temporary distributed network …