Abstract: An embodiment of the invention relates to a method of carrying out a handover process. After receiving a handover message (HOM(13)) that indicates the initiation of the handover process with respect to a moving node (13), a handover control node (20) addresses its next token (T(21)) to the moving node (13) and not to its formerly allocated downstream node (21) in its original wireless token ring system (2). In case that the moving node (13) receives said token (T(21)) and sends thereafter an acknowledgement to the handover control node (20) and an own token (T) to its allocated downstream node (21) in the enlarged wireless token ring system (2), the handover process is deemed to be completed and the moving node (13) forms the newly allocated downstream node to the handover control node (20) in the enlarged wireless token ring system (2).

Abstract: An embodiment of the invention relates to a communication node (CN, N1-N4) capable of communicating with other nodes in a communication system (10) according to a given communication sequence (S). The communication node comprises an analysis unit (110) configured to determine the optimal position of its communication node inside the communication sequence (S) as well as the corresponding optimal predecessor node.

Abstract: An embodiment of the invention relates to a method of operating a communication system (10) that comprises at least four communication nodes (A, B, C, D). The communication system is operated in a time-division multiplexing technique wherein the communication is carried out in consecutive time frames which are divided into slots. At least one slot is allocated to each of the communication nodes. Each of the slots comprises, or preferably consists of, at least two consecutive sub-slots, hereinafter referred to as transmission sub-slot (TSS1-TSS4) and echo sub-slot (ESS1-ESS4). Echo signals (E (DS1)-E (DS4)) are transmitted during echo sub-slots (ESS1-ESS4).