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Data communication between a first mobile switching center of a first wireless communication system and a second mobile switching center of a second wireless communication system
Data communication between a first mobile switching center of a first wireless communication system and a second mobile switching center of a second wireless communication system
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机译:第一无线通信系统的第一移动交换中心与第二无线通信系统的第二移动交换中心之间的数据通信
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摘要
On the basis of the existing mobile radio systems of the so-called second generation, such as the GSM, new mobile radio systems are being developed for the so-called third generation, such as the UMTS, which should be characterized by a higher and flexible transmission rate and should include a package-oriented exchange technology, particularly ATM. In order to create a connection between the different mobile radio systems, a transmission of data between a first mobile services switching center (2GMSC) of a first mobile radio system (2G) and a second mobile services switching center (3GMSC) of a second mobile radio system (3G) is proposed, whereby the mobile services switching centers are connected through an interface (A*), via which useful data is transmitted at a variable useful data transmission rate, in which the useful data is transmitted within data frameworks including a definite pre-determined number of data fields, whereby, depending on the amount of useful data to be transmitted, at least one part of the data fields is first specified with the useful data and then the remaining part of the data fields is specified with dummy bits. In this way, a transmission channel which uses a fixed gross transmission rate (e.g., 64kbit/s), but a variable useful data transmission rate (0-57.6kbit/sec) is created.
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