US 11,729,796 B2
Radio communication system, base station apparatus, radio terminal and communication control method
Hisashi Futaki, Tokyo (JP); Hiroto Sugahara, Tokyo (JP); and Hiroaki Aminaka, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Filed by NEC Corporation, Tokyo (JP)
Filed on Jun. 24, 2021, as Appl. No. 17/356,943.
Application 17/356,943 is a continuation of application No. 15/969,443, filed on May 2, 2018, granted, now 11,089,588.
Application 15/969,443 is a continuation of application No. 15/028,915, granted, now 10,721,728, issued on Jul. 21, 2020, previously published as PCT/JP2014/002423, filed on May 7, 2014.
Claims priority of application No. 2013-227473 (JP), filed on Oct. 31, 2013.
Prior Publication US 2021/0329630 A1, Oct. 21, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 72/27 (2023.01); H04W 28/082 (2023.01); H04L 5/00 (2006.01); H04W 76/15 (2018.01); H04B 7/02 (2018.01); H04W 28/086 (2023.01); H04W 72/542 (2023.01); H04W 16/32 (2009.01); H04W 92/20 (2009.01); H04W 24/10 (2009.01); H04W 52/36 (2009.01); H04W 72/12 (2023.01); H04W 52/14 (2009.01); H04W 88/06 (2009.01)
CPC H04W 72/27 (2023.01) [H04B 7/02 (2013.01); H04L 5/001 (2013.01); H04L 5/0091 (2013.01); H04W 16/32 (2013.01); H04W 24/10 (2013.01); H04W 28/085 (2013.01); H04W 28/0808 (2020.05); H04W 52/367 (2013.01); H04W 72/12 (2013.01); H04W 72/542 (2023.01); H04W 76/15 (2018.02); H04W 92/20 (2013.01); H04W 52/146 (2013.01); H04W 52/365 (2013.01); H04W 88/06 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A first radio station configured to operate a first cell, comprising:
a memory storing instructions; and
at least one hardware processor configured to process the instructions to:
control dual connectivity involving a bearer split in which a first network bearer between a radio terminal and a core network is split over a first Radio Link Control (RLC) bearer on the first radio station and a second RLC bearer on a second radio station,
receive, from the second radio station, bearer split status information about communication of the second RLC bearer in the second radio station, and
control an access stratum related to the first RLC bearer and the second RLC bearer,
wherein the bearer split status information includes radio resource control information related to a radio resource which is used in a second cell operated by the second radio station on the second RLC bearer.