| 摘要 |
A communications arrangement 10 is disclosed which comprises first and second communications devices MT, AP, said first device MT being adapted to enter into a page scan state in which it is receptive to transmissions on a particular page scan frequency fps and said second device AP being adapted to transmit a page train A which is centered around an estimate of said page scan frequency fps. The arrangement is characterized in that in that, under predetermined circumstances following prior communication between said devices MT, AP, said second device AP is adapted to transmit a page train A' which has been modified to start on a frequency f(k) shifted to correspond to said estimate and preferably also truncated to avoid transmission of at least one predetermined frequency sub-train A 2 of the original page train A.
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