US 11,949,490 B2
Relay apparatus
Masato Fujishiro, Yokohama (JP); and Henry Chang, San Diego, CA (US)
Assigned to KYOCERA Corporation, Kyoto (JP)
Filed by KYOCERA Corporation, Kyoto (JP)
Filed on Feb. 3, 2021, as Appl. No. 17/166,893.
Application 17/166,893 is a continuation of application No. PCT/JP2019/031188, filed on Aug. 7, 2019.
Claims priority of provisional application 62/715,959, filed on Aug. 8, 2018.
Prior Publication US 2021/0159968 A1, May 27, 2021
Int. Cl. H04B 7/14 (2006.01); H04B 7/155 (2006.01); H04L 5/00 (2006.01)
CPC H04B 7/155 (2013.01) [H04L 5/0055 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A relay apparatus for use in a mobile communication system, comprising:
a reception side RLC entity configured to receive data from a first communication apparatus;
a transmission side RLC entity configured to transmit, to a second communication apparatus, the data received by the reception side RLC entity; and
an upper entity positioned in an upper layer than the reception side RLC entity and the transmission side RLC entity,
wherein the transmission side RLC entity is configured to receive, from the second communication apparatus, a first acknowledgement indicating that the second communication apparatus has successfully received the transmitted data,
the reception side RLC entity is configured to transmit, to the first communication apparatus, a second acknowledgement indicating that the reception side RLC entity has successfully received the data after waiting until the transmission side RLC entity receives the first acknowledgement,
the upper entity is configured to acquire, from the transmission side RLC entity, information regarding the first acknowledgement, and provide the acquired information to the reception side RLC entity, and
the reception side RLC entity is configured to confirm that the transmission side RLC entity has received the first acknowledgement based on the information received from the upper entity.