This technology mainly lies in the ability to use broadband services, so that networks using 800, 900, 1800 and 1900MHz bands can provide some functions of the third generation mobile communication network, and can greatly improve the standardized services currently provided on GSM and TDMA/ 136.
Extended data:
Characteristics of edge in network construction;
(1)EDGE is a modulation coding technology, which changes the speed of air interface.
(2) 2) The air interface characteristics of Edge, such as the air channel allocation mode and frame structure of TDMA, are the same as those of GSM.
(3)EDGE does not change the structure of GSM or GPRS network, nor introduces new network elements, but only upgrades BTS.
(4) The core network adopts a three-layer model: business application layer, communication control layer and communication connection layer, and the interfaces between the layers should be standardized. Hierarchical structure can make call control and communication connection relatively independent, give full play to the advantages of packet-switched networks, and make traffic and bandwidth allocation closer, especially for VoIP services.
(5) Introduction of Media Gateway (MGW). MGW has STP function, which can realize the establishment of signaling network in IP network (VPN support is needed). In addition, MGW is not only the interface between GSM circuit-switched service and PSTN, but also the interface between RAN and 3G core network.
References:
Baidu Encyclopedia: Edge Network