Concatenated PCU frames for TD-SCDMA
Original Publication Date: 2001-Dec-01
Included in the Prior Art Database: 2003-Jul-23
Existing mobile networks are optimized for speech with a maximal data rate of 13.3kbps. Therefore one divides the standard PCM30 channels (64kbps) which are used for the terrestrial interfaces (e.g. between BSC and BTS) by 4 getting subchan- nels with a datarate of 16kbps each. Those subchannels are sufficient for the terrestrial transport of speech but there are strong market de- mands for mobile data communications with high datarates. With the (quasi standard) 16kbps subchan- nels of course only those packet data communications can be supported which need together with their in- band signalling less or equal 16kbps (GPRS: CS-1 with 9.05kbps, CS-2 with 13.4kbps; EGPRS: MCS-1 with 8.8kbps, MCS-2 with 11.2kbps, may be also MCS-3 with 13.6kbps or 14.8kbps).