User apparatus and base station

• US 10,623,987 B2
• Filed: 04/06/2016
• Issued: 04/14/2020
• Est. Priority Date: 05/22/2015
• Status: Active Grant

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Uchino, Tooru, Hapsari, Wuri Andarmawanti, Takahashi, Hideaki, Umesh, Anil, Abeta, Sadayuki
• Primary Examiner(s): Hoang, Thai D
• Application Number:
  US15/505,339
• Publication Number:
  US 20170272975A1
• Time in Patent Office: 1,469 Days
• Field of Search: 370216-228, 714 48- 57, 714746-776
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 1/1822 involving configuration of automatic repeat request [ARQ] with parallel processes
• CPC Class Codes: H04L 1/1835 Buffer management
• CPC Class Codes: H04L 1/1848 Time-out mechanisms
• CPC Class Codes: H04L 1/188 Time-out mechanisms
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/085 Access point devices with remote components

Abstract

A user apparatus is provided. The user apparatus is included in a mobile communication system including a first base station, a second base station communicating with the first base station, and the user apparatus communicating with the first base station. The user apparatus includes an obtaining unit configured to obtain from the second base station instruction information indicating an error correction processing operation performed between the first base station and the user apparatus; and a communication unit configured to communicate with the first base station by performing the error correction processing based on the instruction information.

Claims

1. A user apparatus in a mobile communication system including a first base station, a second base station communicating with the first base station, and the user apparatus communicating with the first base station, the user apparatus comprising:

an obtaining unit configured to obtain a Radio Resource Control (RRC) signal from the second base station, the RRC signal comprising indication information which indicates an error correction processing operation performed between the first base station and the user apparatus; and

a communication unit configured to communicate with the first base station by performing the error correction processing based on the indication information,

wherein the indication information is HARQ process information for a Physical Downlink Shared Channel (PDSCH).

2. The user apparatus according to claim 1, wherein the indication information includes a number of processes used for the error correction processing.

3. The user apparatus according to claim 2, wherein the communication unit clears a buffer used for the error correction processing in the case where the indication information is obtained from the second base station.

4. The user apparatus according to claim 1, wherein the communication unit clears a buffer used for the error correction processing in the case where the indication information is obtained from the second base station.