Radio link failure

摘要

PCT No. PCT/SE93/00085 Sec. 371 Date Oct. 5, 1993 Sec. 102(e) Date Oct. 5, 1993 PCT Filed Feb. 3, 1993 PCT Pub. No. WO93/16562 PCT Pub. Date Aug. 19, 1993.A cellular mobile telephone system of the TDMA-type has a plurality of mobile radio units which are connected via radio channels with a communication network that includes radio base stations. Monitoring and signalling between the base stations and the mobile radio units is effected with at least one signal flow, among other things responsible for maintaining the physical connection. A second signal flow is used that is responsible, among other things, for transmitting certain data (such as Short Message Service SMS) which is not concerned with maintaining the connection. Considering the first and second signal flows on the data link level (level 2), devices provided for aborting the physical connection are activated when devices monitoring the first and second signal flows indicate a broken connection based on the first signal flow, not on the second signal flow.