Radio relay arrangement for extending the range on the radio link of a telecommunication system

Claim 1

A radio relay arrangement for extending a range on a radio link, connecting radio communication subscriber stations with a radio base station, of a telecommunication system, comprising: a plurality of cascaded parts, each of which are connected to one another via an internal protocol over an internal interface relationship; wherein one of the plurality of cascaded parts is configured to communicate with the base station via an external protocol over an external interface relationship, and an other of the plurality of cascaded parts is configured to communicate with the subscriber stations via the external protocol over the external interface relationship, the external protocol being one that is based on a communication standard and configured to be able to communicate between the subscriber stations and the base station in the absence of cascaded parts; both the internal protocol and the external protocol being configured to utilize repetitive time frames, each of the time frames comprising: a first-half time frame that comprises multiple time slots that are used for downward direction communications; and a second-half time frame that comprises multiple time slots that are used for upward direction communications; wherein the external protocol further comprises: half time frame pairs of time slots, each pair being spaced apart from one another by half of a time-frame length and having a common position in periodically repetitive time frames and belonging to a same call; wherein the internal protocol further comprises: a non half time pair of time slots belonging to the same call which are not associated with a spacing by half the time-frame length that are arranged to minimize total transmission time but each of which belong to a time-frame half allocated to a relevant direction of transmission.