US 12,035,280 B2
Communication system, secondary base station, and user apparatus communicating with secondary base station in a control plane
Masayuki Nakazawa, Tokyo (JP); Mitsuru Mochizuki, Tokyo (JP); Hideo Umehara, Tokyo (JP); and Kuniyuki Suzuki, Tokyo (JP)
Assigned to Mitsubishi Electric Corporation, Tokyo (JP)
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
Filed on Apr. 20, 2023, as Appl. No. 18/304,185.
Application 18/304,185 is a continuation of application No. 17/723,600, filed on Apr. 19, 2022, abandoned.
Application 17/723,600 is a continuation of application No. 17/030,045, filed on Sep. 23, 2020, granted, now 11,343,798, issued on May 24, 2022.
Application 17/030,045 is a continuation of application No. 16/320,119, granted, now 10,827,462, issued on Nov. 3, 2020, previously published as PCT/JP2017/027597, filed on Jul. 31, 2017.
Claims priority of application No. 2016-154272 (JP), filed on Aug. 5, 2016.
Prior Publication US 2023/0300796 A1, Sep. 21, 2023
Int. Cl. H04W 68/10 (2009.01); H04B 7/024 (2017.01); H04W 16/32 (2009.01); H04W 72/04 (2023.01); H04W 72/30 (2023.01); H04W 76/15 (2018.01)
CPC H04W 68/10 (2013.01) [H04B 7/024 (2013.01); H04W 16/32 (2013.01); H04W 72/04 (2013.01); H04W 72/30 (2023.01); H04W 76/15 (2018.02)] 4 Claims
OG exemplary drawing
 
1. A communication system comprising:
a user apparatus; and
multiple base stations each configured to wirelessly communicate with the user apparatus,
wherein the multiple base stations include a master base station and a secondary base station in dual connectivity,
wherein the secondary base station wirelessly communicates with the user apparatus in a control plane (C-plane),
wherein the master base station transmits, to the secondary base station, a request for allocating a resource for the user apparatus, and receives, from the secondary base station, a response to the request,
wherein the master base station transmits, to the user apparatus, addition request configuration for the secondary base station after receiving the response, the addition request configuration including information related to a beam of the secondary base station,
wherein the user apparatus measures a synchronization signal transmitted from the secondary base station after receiving the addition request configuration, and
wherein the user apparatus selects a beam used for wireless communication between the user apparatus and the secondary base station using the information related to the beam.