5g小组委员会介绍

NTIA Questions •What technologies (including waveforms and architectures) might be includedin 5G standards to facilitate sharing between federal and non-federal systems? •Among other things, please consider specifically the key receiver performance requirements forsharing, particularly with respect to IoT devices, including a device's capacity for resilience andinterference detection and avoidance.•Consider any 5G-specific technologies that might facilitate interference prevention, detection, andresolution.•Identify the standardization challenges with respect to such technologies and what actions NTIAshould take to address these challenges. •What commercial 5G deployment scenarios (e.g., specific commercial usecases) exist that could potentially maximize the shared use of this spectrum(e.g., dynamic shared access between federal and non-federal users)? Thoughts •Focus of interference management and sharing in 3GPP and IEEE standardsis intra-technology•Techniques like active-antenna, coordinated resource scheduling, control channel optimization may help in spectrum sharing, but are largely designed to manageintra-technology interference.•Advancements in 5G receiver technology may help systems to be resilient tointerference. •The majority of standards bodies are not working on creating distinct 5Gfeatures geared solely toward sharing between federal and non-federalentities•Existing features identified in the draft report could possibly be used, but they are not ideal.•To address sharing issues, NTIA could propose work to be done by certainstandards organizations. Thoughts •Interference management in 5G will be governed by multipleaspects •Waveform homogeneity in standards, toward OFDM based waveforms,may help manage interference across different standards. •Virtualization and centralized resource allocation technologies can adaptto changing interference patterns in real-time and mitigate accordingly. •Advanced receivers, and standards-defined radio performancerequirements allow for relaxed criteria for co-existence and protection. Thoughts -Deployment -Commercial 5G deployments will address user and enterprise-drivenapplications/services and will enable seamless mobility across multiplefrequency bands, and network paths across, satellite, terrestrial andbroadcast platforms-Each service will have different impact on spectrum sharing, depending oneach service’s critical requirement: reliability, data-rate, latency, or mobility.•NTIA should create protection and network sharing criteria to account for these diverse scenarios to avoid over-protection Thoughts •Spectrum management utilizing automated coordination andexternal independent monitoring tools may be required to managesharing across federal and non-federal systems, in some cases. •Standardized information exchange protocol, information exchangetemplates, and information gathering/measurement criteria fordifferent radio technologies could be studied. Example of NTIA Actions •For example at 3GPP, NTIA could introduce a study item proposal at the nextRAN Plenary meeting, which proposes to study sharing techniques•NTIA would need [4] co-sourcing companies and proponents of the study item to get the work approved.•CSMAC members could help with identifying 3GPP member companies who couldco-source this work.•Next meeting #77 to be held on dates11 - 14 Sep 2017 at Sapporo, Japan.