POINT-TO-POINT RADIO SYSTEM, POINT-TO-POINT RADIO APPARATUS, AND COMMUNICATION CONTROL METHOD

摘要

A radio apparatus (1) notifies a radio apparatus (2) of a new reverse channel to be used in a reverse link (52) and another idle reverse channel(s). If reachability of a forward link (51) is lost by the use of a new forward channel associated with the new reverse channel, the radio apparatus (2) determines a further new forward channel from among forward channel(s) associated with the idle reverse channel(s) of which the radio apparatus (2) has been notified by the radio apparatus (1). This contributes, for example, to a safe switch of the bidirectional operating radio channels without using a redundant connection, when frequency-division multiplexing with fixed frequency spacing is used.

主权项

1. A point-to-point radio system comprising first and second radio apparatuses configured to perform a bidirectional point-to-point radio communication, wherein
the first and second radio apparatuses are configured to cooperatively perform a procedure for changing an operating radio channel of a forward link from the first radio apparatus to the second radio apparatus and an operating radio channel of a reverse link from the second radio apparatus to the first radio apparatus, and the procedure comprises: (a) transmitting, by the first radio apparatus, to the second radio apparatus, a first notification explicitly or implicitly indicating a new reverse channel to be used as the operating radio channel of the reverse link and indicating at least one idle reverse channel that is different from the new reverse channel and available to use in the reverse link; and (b) when a reception quality of a new forward channel associated with the new reverse channel is not satisfactory, determining, by the second radio apparatus, a further new forward channel to be used as the operating radio channel of the forward link from among at least one forward channel associated with the at least one idle reverse channel.