IP Library › Granted Patent US 12666496
Granted Patent B2
US 12666496 · App. 18/019,243 · Granted Jun 23, 2026

Terminal apparatus, base station apparatus, and method

Inventors: Takako Hori (Sakai City, JP); Shohei Yamada (Sakai City, JP); Hidekazu Tsuboi (Sakai City, JP)
Assignee: SHARP KABUSHIKI KAISHA
H04W76/30H04W4/06H04W72/20H04W76/20
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Quick Facts
Patent No.
US 12666496
App. No.
18/019,243
Granted
Jun 23, 2026
Kind
B2
Abstract

Provided is a terminal apparatus configured to release, based on receiving, via a DCCH from the base station apparatus, an RRC message including a part of session information of an MBS session, an MBS radio bearer used to receive the MBS session.

Claims (6)

1 . A terminal apparatus for communicating with a base station apparatus, wherein

the terminal apparatus is configured to release a Packet Data Convergence Protocol (PDCP) entity of a Multicast Broadcast Service (MBS) Radio Bearer (MRB) for receiving an MBS on a Point-to-Point basis after receiving, from the base station, via a Dedicated Control Channel (DCCH), a Radio Resource Control (RRC) message including a session identity (ID) of the MBS, the RRC message indicating to the terminal apparatus to release the MRB corresponding to the session ID.

2 . A base station apparatus for communicating with a terminal apparatus, wherein

the base station apparatus is configured to cause the terminal apparatus to release a Packet Data Convergence Protocol (PDCP) entity of a Multicast Broadcast Service (MBS) Radio Bearer (MRB) for transmitting an MBS on a Point-to-Point basis after transmitting, to the terminal apparatus, via a Dedicated Control Channel (DCCH), a Radio Resource Control (RRC) message including a session identity (ID) of the MBS, the RRC message indicating to the terminal apparatus to release the MRB corresponding to the session ID.

3 . A method performed by a terminal apparatus for communicating with a base station apparatus, the method comprising:

releasing a Packet Data Convergence Protocol (PDCP) entity of a Multicast Broadcast Service (MBS) Radio Bearer (MRB) for receiving an MBS on a Point-to-Point basis after receiving, from the base station, via a Dedicated Control Channel (DCCH), a Radio Resource Control (RRC) message including a session identity (ID) of the MBS, the RRC message indicating to the terminal apparatus to release the MRB corresponding to the session ID.