Patent ID: 11949490
Assignee: KYOCERA CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
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.