Methods and apparatuses for configuring radio terminal with numerology of second RAT via first RAT
地域：
Tokyo
摘要
A second RAN node (2) associated with a second RAT sends a radio resource configuration of the second RAT to a radio terminal (3) via a first RAN node (1) associated with a first RAT. The radio resource configuration explicitly or implicitly indicates at least one numerology that is included in multiple numerologies supported by the second RAT and is different from a reference numerology. It is thus, for example, possible to allow a radio terminal to be configured with a numerology of a cell served by a secondary gNB or a target gNB in Inter-RAT Dual Connectivity between E-UTRA and NR and in a handover from E-UTRA to NR.
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The UE and the NR gNB in the 5G system support aggregation of multiple NR carriers with different numerologies. The 3GPP discusses achievement of aggregation of multiple NR carriers with different numerologies by lower layer aggregation, such as the existing LTE Carrier Aggregation (CA), or higher layer aggregation, such as the existing Dual Connectivity (see, for example, Non-Patent Literature 5 to 7).
- [Non-Patent Literature 1] 3GPP TR 23.799 V14.0.0 (2016-12) “3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Study on Architecture for Next Generation System (Release 14)”, December 2016
- [Non-Patent Literature 2] 3GPP TR. 38.801 V1.0.0 (2016-12) “3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Study on New Radio Access Technology; Radio Access Architecture and Interfaces (Release 14)”, December 2016
- [Non-Patent Literature 3] 3GPP R2-168400, NTT DOCOMO, INC., “QoS and bearer for DC between LTE and NR”, 3GPP TSG-RAN WG2 Meeting #96, Reno, USA, 14-18 Nov. 2016
- [Non-Patent Literature 4] 3GPP R2-168686, Nokia, Alcatel-Lucent Shanghai Bell, “EPC—NR PDCP interaction for tight interworking: User Plane aspects”, 3GPP TSG-RAN WG2 Meeting #96, Reno, USA, 14-18 Nov. 2016
- [Non-Patent Literature 5] 3GPP TR 38.804 V 0.4.0 (2016-11) “3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Study on New Radio Access Technology; Radio Interface Protocol Aspects (Release 14)”, November 2016
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