Method of supporting data retransmission in a mobile communication system

• US 8,234,534 B2
• Filed: 06/08/2007
• Issued: 07/31/2012
• Est. Priority Date: 06/21/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Young Dae, Chun, Sung Duck, Yi, Seung June, Park, Sung Jun
• Primary Examiner(s): BONZO, BRYCE P
• Application Number:
  US12/303,246
• Publication Number:
  US 20090150739A1
• Time in Patent Office: 1,880 Days
• Field of Search: 714/749
• US Class Current: 714/749
• CPC Class Codes: H04L 1/16 in which the return channel carries supervisory signals, e.g. repetition request signals
• CPC Class Codes: H04L 1/1657 Implicit acknowledgement of correct or incorrect reception, e.g. with a moving window
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1858 Transmission or retransmission of more than one copy of acknowledgement message
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 2001/125 Arrangements for preventing errors in the return channel
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method of supporting data retransmission in a mobile communication system is disclosed according to the present invention. A method of supporting a hybrid automatic repeat and request (HARQ) at a user equipment in a mobile communication system comprises transmitting a first packet to a network, receiving a reception status signal for the first packet from the network, obtaining a negative acknowledgement signal (NACK) by decoding the reception status signal, and receiving supplemental control information indicating that the reception status signal is a positive acknowledgement signal (ACK).

Claims

1. A method of supporting hybrid automatic repeat and request (HARQ) at a user equipment in a mobile communication system, comprising:

transmitting a first packet to a network;

receiving an uplink scheduling grant message allocating uplink resources for transmitting a second packet from the network; and

performing a next procedure on an assumption that the first packet is successfully received by the network regardless of a reception status signal for the first packet.

2. The method of claim 1, further comprising:

receiving a reception status signal for the first packet from the network; and

obtaining a negative acknowledgement signal (NACK) by decoding the reception status signal.

3. The method of claim 1, wherein the next procedure is to transmit the second packet to the network, the second packet not being a retransmission packet.

4. The method of claim 1, wherein the mobile communication system is based on an orthogonal frequency division multiplexing (OFDM) scheme or an orthogonal frequency division multiple access (OFDMA) scheme.

5. A user equipment for supporting hybrid automatic repeat and request (HARQ) in a mobile communication system, the user equipment comprising:

transmitting a first packet to a network;

receiving an uplink scheduling grant message allocating uplink resources for transmitting a second packet from the network; and

performing a next procedure on an assumption that the first packet is successfully received by the network regardless of a reception status signal for the first packet.