Search results
Results from the WOW.Com Content Network
SingleRAN GSM-R is a suite of communications technologies that are designed to improve telecommunications performance through long tunnels, over very long distances, and in high-traffic areas. Huawei began researching GSM-R technologies in 2001 and, according to Cellular News , is "one of only a few" GSM-R network providers in the world.
The OpenBTS installation was later decommissioned ~February 2011 by Niue Telecom, a commercial grade GSM 900 network with Edge support was instead launched few months later (3x sites in Kaimiti O2, Sekena S2/2/2 and Avatele S2/2/2) this provided full coverage around the island and around the reef, the installation included a pre-pay system ...
The Universal Mobile Telecommunications System (UMTS) is a 3G mobile cellular system for networks based on the GSM standard. [1] Developed and maintained by the 3GPP (3rd Generation Partnership Project), UMTS is a component of the International Telecommunication Union IMT-2000 standard set and compares with the CDMA2000 standard set for networks based on the competing cdmaOne technology.
Roaming is one of the fundamental mobility management procedures of all cellular networks.Roaming is defined [2] as the ability for a cellular customer to automatically make and receive voice calls, send and receive data, or access other services, including home data services, when travelling outside the geographical coverage area of the home network, by means of using a visited network.
GSM radio frequency optimization (GSM RF optimisation) is the optimization of GSM radio frequencies. GSM networks consist of different cells and each cell transmit signals to and receive signals from the mobile station, for proper working of base station many parameters are defined before functioning the base station such as the coverage area of a cell depends on different factors including ...
GPRS Tunnelling Protocol (GTP) is a group of IP-based communications protocols used to carry general packet radio service (GPRS) within GSM, UMTS, LTE and 5G NR radio networks. In 3GPP architectures, GTP and Proxy Mobile IPv6 based interfaces are specified on various interface points.
The first version implemented the GSM specification 21.12 and 08.5x, and worked for a specific Base Transceiver Station (Siemens BS11 MicroBTS). OpenBSC implemented several MSC components, including the A-bis protocol (the protocol between the BTS and the BSC ), AUC , HLR , VLR (both using SQL tables), and a SMS Switching Center.
The Um physical layer is defined in the GSM 05.xx series of specifications, with the introduction and overview in GSM 05.01. For most channels, Um L1 transmits and receives 184-bit control frames or 260-bit vocoder frames over the radio interface in 148-bit bursts with one burst per timeslot.