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The present document is to evaluate possible methods and conditions for existing Band 11 and Band 21 UEs to comply with a new satellite protection requirement defined by ITU-R.
Band 11 (UE transmit: 1427.9 - 1447.9 MHz, BS transmit: 1475.9 - 1495.9 MHz) and Band 21 (UE transmit: 1447.9 -
1462.9 MHz, BS transmit: 1495.9 -1510.9 MHz) have been operated for some time in Japan. On the other hand, there
has been a long standing discussion in ITU-R on the interference from the cellular to satellite operated next to the
In WRC-15, it was concluded that 1.5 GHz (1427 - 1518 MHz) was identified as IMT spectrum and at the same time
the unwanted emission limit for UEs (IMT Mobile station) operated in 1427 - 1452 MHz was mandated to protect
EESS (Earth Exploration-Satellite Service) Final Acts WRC-15. Note that this limit does not apply to UEs for which
the notification information was received by ITU-R before the last day of WRC-15, i.e. UEs in Japan.
With those decisions, while Band 11 and 21 could potentially be utilized for the new IMT spectrum other than in Japan,
existing Band 11 and 21 UEs if operated outside Japan has to comply with the unwanted emission limits. This could be
done with RB restriction controlled by a BS scheduler and/or multiple NS/Pemax when appropriate but these schemes
are determined based on UE assumptions in 3GPP and it is quite difficult for an organization outside to evaluate or
In this study, the methodologies and actual conditions mentioned above are studied
full Table of Contents for TR 36.745 Word version: 14.0.0