Transmission control method for HARQ in mobile communication system

• US 10,461,894 B2
• Filed: 08/30/2017
• Issued: 10/29/2019
• Est. Priority Date: 12/31/2008
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Soeng Hun, Lieshout, Gert-Jan Van
• Primary Examiner(s): McCarthy, Christopher S
• Application Number:
  US15/691,019
• Publication Number:
  US 20170366303A1
• Time in Patent Office: 790 Days
• CPC Class Codes: G06F 11/1625 in communications, e.g. transmission, interfaces
• CPC Class Codes: H04L 1/0061 Error detection codes
• CPC Class Codes: H04L 1/0072 Error control for data other than payload data, e.g. control data
• 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 1/1829 Arrangements specially adapted for the receiver end
• CPC Class Codes: H04L 1/1864 ARQ related signaling H04L1/1607 takes precedence
• CPC Class Codes: H04L 1/1867 Arrangements specially adapted for the transmitter end
• CPC Class Codes: H04L 1/1893 Physical mapping arrangements physical resource mapping in general H04L5/00
• CPC Class Codes: H04L 1/1896 ARQ related signaling

Abstract

A transmission control method for HARQ is provided for improving HARQ performance in a mobile communication system. The transmission control method for Hybrid Automatic Repeat reQuest (HARQ) in a mobile communication system according to the present invention includes receiving an downlink resource assignment message; determining whether configured downlink assignment has been indicated to an HARQ entity since a previously received downlink assignment for a User Equipment'"'"'s (UE'"'"'s) Cell-Radio Network Temporary Identifier (C-RNTI) for the same HARQ process; maintaining, if the configured downlink assignment has not been indicated to the HARQ entity, the HARQ process; and processing, if the configured downlink assignment has been indicated to the HARQ entity, the downlink resource assignment message as a resource assignment message for initial transmission.

Claims

1. A method by a terminal, the method comprising:

receiving downlink control information on a physical downlink control channel (PDCCH) for a cell-radio network temporary identifier (C-RNTI) of the terminal;

receiving a transport block (TB) based on the downlink control information;

determining, based on a reset of a medium access control (MAC) entity being requested, whether the TB is received after the reset of the MAC; and

determining, in case that the TB is received after the reset of the MAC entity, a new data indicator (NDI) of the downlink control information to have been toggled regardless of a value of the NDI.

2. The method of claim 1, wherein the TB received after the reset of the MAC entity includes a next received TB after the reset of the MAC entity is requested.

3. The method of claim 2, wherein the determining of the NDI to have been toggled further comprises determining the next received TB as a first transmission.

4. The method of claim 1, wherein the C-RNTI includes a temporary cell-radio network temporary identifier (TC-RNTI).

5. A terminal, the terminal comprising:

a transceiver configured to transmit and receive signals; and

a controller configured to;

receive downlink control information on a physical downlink control channel (PDCCH) for a cell-radio network temporary identifier (C-RNTI) of the terminal,

receive a transport block (TB) based on the downlink control information,

determine, based on a reset of a medium access control (MAC) entity being requested, whether the TB is received after the reset of the MAC entity, and

determine, in case that the TB is received after the reset of the MAC entity, a new data indicator (NDI) of the downlink control information to have been toggled regardless of a value of the NDI.

6. The terminal of claim 5, wherein the TB received after the reset of the MAC entity includes a next received TB after the reset of the MAC entity is requested.

7. The terminal of claim 6, wherein the controller is further configured to determine the next received TB as a first transmission.

8. The terminal of claim 5, wherein the C-RNTI includes a temporary cell-radio network temporary identifier (TC-RNTI).