Method of handling packet data in a wireless communications system and related apparatus

• US 20070253393A1
• Filed: 04/26/2007
• Published: 11/01/2007
• Est. Priority Date: 04/27/2006
• Status: Active Grant

• Current Assignee: Innovative Sonic Limited
• Original Assignee: Innovative Sonic Limited
• Inventors: Tseng, Li-Chih
• Granted Patent: US 8,400,999 B2
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04L 1/1829 Arrangements specially adapted for the receiver end

Abstract

A method of handling packets for a user end in a wireless communications system includes activating a hybrid automatic repeat request (HARQ) procedure, receiving a first packet and decoding the first packet successfully, receiving a second packet following the first packet, and decoding the second packet if the second packet is a retransmission of the first packet.

Claims

1. A method of handling packets for a user end in a wireless communications system, comprising:

activating a hybrid automatic repeat request (HARQ) procedure;

receiving a first packet and decoding the first packet successfully;

receiving a second packet following the first packet; and

decoding the second packet if the second packet is a retransmission of the first packet.

2. The method of claim 1 further comprising sending an acknowledgement (ACK) after the decoding of the second packet is performed.

3. The method of claim 1 further comprising sending a negative acknowledgement (NACK) if the second packet is decoded unsuccessfully.

4. The method of claim 1, wherein the wireless communications system is a high-speed downlink packet access (HSDPA) system of a third generation wireless communications system.

5. The method of claim 4, wherein the second packet has a new data indicator (NDI) value which is identical to a new data indicator value of the first packet if the second packet is the retransmission of the first packet.

6. A communications device for properly handling packets to enhance utilization of radio resources in a wireless communications system, the communications device comprising:

a control circuit for realizing functions of the communications device;

a processor installed in the control circuit, for executing a program code to command the control circuit; and

a memory installed in the control circuit and coupled to the processor for storing the program code;

wherein the program code comprises;

activating a hybrid automatic repeat request (HARQ) procedure;

receiving a first packet and decoding the first packet successfully;

receiving a second packet following the first packet; and

decoding the second packet if the second packet is a retransmission of the first packet.

7. The communications device of claim 6, wherein the program code further comprises sending an acknowledgement (ACK) after the decoding of the second packet is performed.

8. The communications device of claim 6, wherein the program code further comprises sending a negative acknowledgement (NACK) if the second packet is decoded unsuccessfully.

9. The communications device of claim 6, wherein the wireless communications system is a high-speed downlink packet access (HSDPA) system of a third generation wireless communications system.

10. The communications device of claim 9, wherein the second packet has a new data indicator (NDI) value which is identical to a new data indicator value of the first packet if the second packet is the retransmission of the first packet.