Search results
Results from the WOW.Com Content Network
The GPRS system is an integrated part of the GSM network switching subsystem. [7] [8] [9] GPRS is a best-effort service, implying variable throughput and latency that depend on the number of other users sharing the service concurrently, as opposed to circuit switching, where a certain quality of service (QoS) is
GMR-1: The basic circuit switched model, more or less corresponding to what GSM Phase 2 is, and using exactly the same core network infrastructure. GMPRS (GEO-Mobile Packet Radio Service): Adding support for packet data. The equivalent of GPRS in the GSM world. Still connected to a 'Gb' style core network.
This is used in GSM to separate cells, which then use TDMA to separate users within the cell. Code-division multiple access (CDMA) This uses a digital modulation called spread spectrum which spreads the voice data over a very wide channel in pseudorandom fashion using a user or cell specific pseudorandom code. The receiver undoes the ...
True 3G systems such as EV-DO, W-CDMA (including HSPA and HSPA+) provide combined circuit switched and packet switched data and voice services from the outset, usually at far better data rates than 2G networks with their extensions. All of these services can be used to provide combined mobile voice access and Internet access at remote locations.
The GPRS core network is the central part of the general packet radio service (GPRS) which allows 2G, 3G and WCDMA mobile networks to transmit Internet Protocol (IP) packets to external networks such as the Internet. The GPRS system is an integrated part of the GSM network switching subsystem.
The Radio Network Controller (RNC) is a governing element in the UMTS radio access network and is responsible for controlling the Node Bs that are connected to it. The RNC carries out radio resource management, some of the mobility management functions and is the point where encryption is done before user data is sent to and from the mobile.
In the UMTS system the data connection between a GPRS Core Network and a mobile station is identified using an NSAPI, that identifies as well a radio access bearer. In the previous releases of GPRS (pre-Release’00), a connection is identified by NSAPI and a Logical Link Control (LLC) protocol SAPI. However, in UMTS, and thus in GPRS Release ...
In communications, Circuit Switched Data (CSD) (also named GSM data) is the original form of data transmission developed for the time-division multiple access (TDMA)-based mobile phone systems like Global System for Mobile Communications (GSM).