US 12,289,652 B2
Failure information for wireless relay networks
Atsushi Ishii, Vancouver, WA (US)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/608,130
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Apr. 28, 2020, PCT No. PCT/JP2020/018195
§ 371(c)(1), (2) Date Nov. 1, 2021,
PCT Pub. No. WO2020/222309, PCT Pub. Date Nov. 5, 2020.
Claims priority of provisional application 62/842,374, filed on May 2, 2019.
Prior Publication US 2022/0217598 A1, Jul. 7, 2022
Int. Cl. H04W 36/00 (2009.01); H04W 36/30 (2009.01); H04W 76/27 (2018.01); H04W 88/14 (2009.01)
CPC H04W 36/305 (2018.08) [H04W 36/0058 (2018.08); H04W 36/0061 (2013.01); H04W 76/27 (2018.02); H04W 88/14 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A wireless node that communicates over a radio interface with a wireless access node of a radio access network (RAN), the wireless node comprising:
processor circuitry configured to establish, with the wireless access node, dual connectivity (DC) comprising a first connection and a second connection, the first connection being relayed by an Integrated Access and Backhaul (IAB) node;
receiver circuitry configured to receive, from the IAB node, a notification message indicating a radio link failure (RLF) on the first connection; and
transmitter circuitry configured to transmit, based on the notification message, a failure information message to the wireless access node using the second connection, wherein
the failure information message comprises a failure type indicating that transmission of the failure information message is caused by the reception of the notification message on the first connection,
the failure type included in the failure information message is set from a plurality of given failure types, and
the failure information message further comprises information indicating a Cell Group in which the RLF occurs.