№ files_lp_3_process_7_031511
Technical meeting contribution summarizing study objectives, baseline assumptions, and proposed parameters for analyzing requirement impacts of a new NB-IoT NTN TDD mode and MSS band specification within the 3GPP RAN4 work framework.
Organization: 3GPP TSG-RAN WG4
Meeting number: #113
Location: Orlando, US
Meeting dates: 18–22 November 2024
Agenda item: 7.28.3
Source: Moderator (Qualcomm Incorporated)
Document type: Technical meeting contribution (information)
Work item: IoT_NTN_TDD
Related agenda items: 7.28.1 General aspects and work plan; 7.28.2 Study of impact due to periodic pattern
Technical scope: NB-IoT NTN TDD mode and new operating band specification
Target frequency band: 1616–1626.5 MHz MSS allocation
Satellite scenarios: LEO @600 km and @1200 km, set-1 satellite parameters (TR 36.763)
Baseline TDD periodicity: N = 9 radio frames
Baseline DL consecutive subframes (D): 8
Baseline UL consecutive subframes: 8
Channel bandwidth: 200 kHz
Deployment assumptions: Standalone NB-IoT with anchor and non-anchor carriers; Earth fixed tracking area; Earth fixed or Earth moving cells for NGSO
Responsible groups: RAN1, RAN2, RAN4
Study phase start: RAN1 from Oct 2024; RAN4 from Nov 2024
Checkpoint: RAN#106 completion of study phase
Key aspects under study: Periodic UL/DL pattern impact on UE synchronization, RRM, RF requirements, demodulation, higher layer impacts
Exclusions: No NTN-NTN coexistence study; reuse of existing RAN4 RF emission requirements
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