Importance

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Abstract

A greater variety of frequency combinations may be utilized in multiple situations, including, by way of example but not limitation, hard handovers, soft handovers, macrodiversity, etc. Soft handovers, for example, may be executed between two base stations (BSs) with respect to a mobile station (MS) in which the uplink (UL) and downlink (DL) frequency pairs used to communicate with each base station differ from each other. For instances, only the UL carrier channel, only the DL carrier channel, or both the UL and the DL carrier channels may differ for the respective communications between the MS and the respective BSs. In the first two cases in which only one carrier channel differs, variable duplex distance (VDD) is implemented. In the third case in which both carrier channels differ, constant duplex distance (CDD) is implemented. In another embodiment of the present invention, a hard handover that relies on a VDD implementation is effectuated by changing only one of the UL and the DL carrier channels in the handover process.

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First Claim