1. Relatively low connection costs High resource utilization In the GSM network, GPRS first introduced the packet-switched transmission mode, which caused a fundamental change in the original GSM data transmission mode using the circuit-switched mode, which was scarce in wireless resources. Situation is particularly important. According to the circuit-switched mode, the user will occupy the wireless channel alone regardless of whether or not the data is transmitted during the entire connection period. During the session, many applications often have a lot of free time, such as Internet browsing, sending and receiving E-mail, and so on. For the packet-switched mode, the user only occupies resources during sending or receiving data, which means that multiple users can efficiently share the same wireless channel, thereby improving resource utilization. The charging of GPRS users is mainly based on the amount of data communicated, which reflects the principle of “how much to get, how much to payâ€. In fact, GPRS users may connect for several hours, but they only pay a relatively low connection fee.
2. High transmission rate GPRS can provide up to 115kbit/s transmission rate (the highest value is 171.2kbit/s, excluding FEC). This means that through a laptop computer, GPRS users can browse the Internet as quickly as ISDN users in a few years, and also make it possible to use mobile multimedia applications that are sensitive to transmission rates.
3. Short access time of packet switching access time is shortened to less than 1 GPRS is a new type of GSM data service, which can provide wireless packet data access service to mobile users. GPRS mainly provides a connection between mobile users and remote data networks (such as supporting TCP/IP, X.25, etc.) to provide mobile users with high-speed wireless IP and wireless X.25 services.
GPRS uses packet switching technology, which allows multiple users to share certain fixed channel resources. If eight timeslots in the TDMA frame on the air interface are used to transmit data, then the data rate can reach up to 164kb/8. The channel resources of the GSM air interface can be occupied by both voice and GPRS data services. Of course, under the condition of sufficient channels, some channels can be defined as GPRS dedicated channels. To implement GPRS networks, new network interfaces and communication protocols need to be introduced in traditional GSM networks. At present, the GPRS network introduces a GSN (GPRS Surporting Node) node. The mobile station must be a GPRS mobile station or a GPRS/GSM dual-mode mobile station.
* Development of GPRS
According to the European ETSI GSM Phase 2+ proposal, GPRS is divided into two phases (Phase 1 and Phase 2). Phase 1 of GPRS will support the following functions and services:
1, TCP/IP and X.25 business
2, the new GPRS air interface encryption technology
3, GPRS additional services
4. Enhanced SMS Service (E-SMs)
GPRS packet data charging function, that is, based on the amount of data to take charge of the above functions, the most significant is the TCP/IP and X.25 functions. The GSM network can provide users with e-mail, WWW browsing, private data, LAN access and other services through TCP/IP and X.25. Phase 2 of the GPRS Phase II specification is still being developed and will provide more new features and services.
2. High transmission rate GPRS can provide up to 115kbit/s transmission rate (the highest value is 171.2kbit/s, excluding FEC). This means that through a laptop computer, GPRS users can browse the Internet as quickly as ISDN users in a few years, and also make it possible to use mobile multimedia applications that are sensitive to transmission rates.
3. Short access time of packet switching access time is shortened to less than 1 GPRS is a new type of GSM data service, which can provide wireless packet data access service to mobile users. GPRS mainly provides a connection between mobile users and remote data networks (such as supporting TCP/IP, X.25, etc.) to provide mobile users with high-speed wireless IP and wireless X.25 services.
GPRS uses packet switching technology, which allows multiple users to share certain fixed channel resources. If eight timeslots in the TDMA frame on the air interface are used to transmit data, then the data rate can reach up to 164kb/8. The channel resources of the GSM air interface can be occupied by both voice and GPRS data services. Of course, under the condition of sufficient channels, some channels can be defined as GPRS dedicated channels. To implement GPRS networks, new network interfaces and communication protocols need to be introduced in traditional GSM networks. At present, the GPRS network introduces a GSN (GPRS Surporting Node) node. The mobile station must be a GPRS mobile station or a GPRS/GSM dual-mode mobile station.
* Development of GPRS
According to the European ETSI GSM Phase 2+ proposal, GPRS is divided into two phases (Phase 1 and Phase 2). Phase 1 of GPRS will support the following functions and services:
1, TCP/IP and X.25 business
2, the new GPRS air interface encryption technology
3, GPRS additional services
4. Enhanced SMS Service (E-SMs)
GPRS packet data charging function, that is, based on the amount of data to take charge of the above functions, the most significant is the TCP/IP and X.25 functions. The GSM network can provide users with e-mail, WWW browsing, private data, LAN access and other services through TCP/IP and X.25. Phase 2 of the GPRS Phase II specification is still being developed and will provide more new features and services.