Apparatus and method for co-existence between different radio access technologies

摘要

Apparatuses and methods are provided for co-existence between different first and second radio access technologies (RATs). The apparatus is configured or caused to perform operations, which the method may include. The operations may include selecting parameter(s) of a frame structure of the first RAT so as to facilitate its co-existence with the second RAT. These parameters may include a given length of a cyclic prefix of subframe(s) of the first frame structure, or the types of subframes of which the first frame structure is composed. The operations may additionally or alternatively include selecting, for the first RAT, the uplink and/or downlink duration(s) and/or transmit transition gap therebetween so as to satisfy a number of conditions that may define co-existence between the first and second RATs. Further, the operations may additionally or alternatively include structuring cyclic prefixes of the frame structures of the first RAT to reduce network search complexity.

主权项

1. An apparatus for co-existence between different radio access technologies, the apparatus comprising a processor configured to at least perform or cause the apparatus to at least perform:
preparing for transmission or receiving data from a base station to or at a mobile station, the data being formatted in frames of a first frame structure of a first radio access technology that applies time division duplexing and supports a given round trip delay (RTD) between the base station and mobile station, the first frame structure being composed of subframes allocated to an uplink and subframes allocated to a downlink, the uplink and downlink subframes of the first frame structure having respective durations U1 and D1 and being separated by a transmit transition gap (TTG), wherein one or more of U1, D1 or TTG are selected based on a second frame structure of a second, different radio access technology that applies time division duplexing, the second frame structure also being composed of subframes allocated to an uplink and subframes allocated to a downlink, the uplink and downlink subframes of the second frame structure having respective durations U2 and D2 and being separated by a guard period (G), and wherein one or more of U1, D1 or TTG are selected to satisfy the following conditions: (a) D2+G/2>D1+RTD/2; (b) U2+G/2>U1+RTD/2; and (c) RTD