Читать книгу Mobile Communications Systems Development - Rajib Taid - Страница 39

Within the 3GPP, there are four technical specification‐working groups (TSG) dealing with a particular area of work. Those groups are:

 RAN,

 Service and Systems Aspects (SA),

 Core Network and Terminals (CT), and

 GSM EDGE Radio Access Network (GERAN).

Each of the above areas/groups has further subgroups, such as RAN1, RAN2, RAN3, RAN4, RAN5, and SA1 to SA6, depending on a work area. For details, visit the specification group link on the 3GPP site [4] to know about the different working groups and their area of responsibilities. There is a table named “Project Co‐ordination Group (PCG)” containing hyperlinks for various working groups which could be explored further by clicking on the same. 3GPP specifies:

 Maintenance and evolution of radio access technologies starting from GSM (2G) to 5G and beyond.

 Maintenance and evolution of core network and system architecture starting from GSM (2G) to 5G and beyond.

 Service layers such as GSM Services and IMS.