发布网友 发布时间:2022-04-30 12:42
共2个回答
热心网友 时间:2022-06-22 06:28
3GPP is the third-generation mobile communications partnership program was established in 1998, primarily responsible for the development of GSM to 3G cellular mobile system evolution of the standard. Although 3GPP study mainly concentrated in the new, higher bandwidth utilization of wireless access methods, it is also being used to provide high-bandwidth new operational requirements of the network structure research. As we all know, the first GSM network structure is based on circuit drink voice business focused. Although later in the system additional pages of data communications capability, but the system continues to maintain its characteristics of the circuit-switched, have certain limitations. It was necessary to design a new solution. IMS, or IP Multimedia Subsystem, is a new solution. IMS is the result of cellular mobile communication standards 3GPP and IETF Internet Standards Organization common collaboration Guitar fruit. 3rd Generation Mobile Communication System (3G) cellular integration to the mobile communication network and the Internet (the Internet) and the two networks is the most successful and most development potential of the network. 3G standards in the 3GPP Release5 version of the IP Multimedia Subsystem (IMS) concept. 3G systems it is a key component of the It allows the user to use the cellular mobile system access on the Internet can be used for all operations. Then no matter where users, who possess a 3G terminals, we can visit the various web pages, reading e-mail, watching movies or television conference, which is IMS hope to achieve. IMS notable feature was the adoption of the SIP system, communication has nothing to do with access, there can be all sorts of media operations control and load-bearing capacity separation and call and conversation separation, separation of applications and services, and the separation of network operations and other capabilities. IMS proposed conformed to the development of integrated communications network development trend can be expected that in the future all-IP network, IMS SIP will be based on the common platform for conversation, applies to both IP-based multimedia services also apply to traditional voice, data and video traffic. Through IMS, 3G network is able to provide users with on PoC (Push to talk over Cellular). Presence, instant messaging, multimedia conferencing, and other multimedia services. Speaking from the network structure, IMS is superimposed on the original circuit domain and a network domain above the network, through a domain signaling and user data loading, and can be achieved and the original circuit domain interoperability. IMS is the future of multimedia communication direction of the development of the next generation network is the most important component. Keywords : 3G IMS NGN Softswitch热心网友 时间:2022-06-22 06:28
3 GPPs namely the third generation ambulation correspondence colleague plans to establish in 1998, mainly being responsible for the standard which draws up GSM toward the third generation beehive ambulation system to evolve.Although the main concentration of the studying of 3 GPPs is in the new higher bandwidth utilization of the wireless connect into method aspect, also Be carrying on making use of a high bandwidth to provide various research that the network that the new business needs configurings.Know to all, first GSM network structure with the electric circuit drinks speech business for point to be attended to of.Though afterwards the page was additional in the system data correspondence ability, but that system still kept its electric circuit to exchange of characteristics, have to certainly limit sex.Therefore need to design a kind of new solution