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

• US 20070291688A1
• Filed: 06/15/2007
• Published: 12/20/2007
• Est. Priority Date: 06/19/2006
• Status: Abandoned Application

• Current Assignee: Innovative Sonic Limited
• Original Assignee: Innovative Sonic Limited
• Inventors: Tseng, Li-Chih, Jiang, Sam
• Application Number:
  US11/812,217
• Publication Number:
  US 20070291688A1
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements

Abstract

A method of handling packet data in a wireless communications system includes activating a hybrid automatic repeat request process, determining whether each of a plurality of packets to be transmitted is a signaling message or a control message, and setting maximum number of transmissions for a first packet of the plurality of packets to be 1 when the first packet is determined to be a signaling message or a control message.

Claims

1. A method of handling packet data in a wireless communications system comprising:

activating a hybrid automatic repeat request process;

determining whether each of a plurality of packets to be transmitted is a signaling message or a control message; and

setting maximum number of transmissions for a first packet of the plurality of packets to be 1 when the first packet is determined to be a signaling message or a control message.

2. The method of claim 1 further comprising setting maximum number of transmissions for a second packet of the plurality of packets to be greater than 1 when the second packet is neither a signaling message nor a control message.

3. The method of claim 2 further comprising retransmitting the second packet when receiving a negative acknowledgement signal corresponding to the second packet.

4. The method of claim 1 further comprising outputting a third packet different from the first packet when receiving a negative acknowledgement signal corresponding to the first packet.

5. The method of claim 4, wherein the third packet comprises at least an updated signaling message or an updated control message.

6. A communications device of a wireless communications system utilized for accurately handling packet data comprising:

a control circuit for realizing functions of the communications device;

a central processing unit installed in the control circuit for executing a program code to operate the control circuit; and

a memory coupled to the central processing unit for storing the program code;

wherein the program code comprises;

activating a hybrid automatic repeat request process;

determining whether each of a plurality of packets to be transmitted is a signaling message or a control message; and

setting maximum number of transmissions for a first packet of the plurality of packets to be 1 when the first packet is determined to be a signaling message or a control message.

7. The communications device of claim 6, wherein the program code further comprises setting maximum number of transmissions for a second packet of the plurality of packets to be greater than 1 when the second packet is neither a signaling message nor a control message.

8. The communications device of claim 7, wherein the program code further comprises retransmitting the second packet when receiving a negative acknowledgement signal corresponding to the second packet.

9. The communications device of claim 6, wherein the program code further comprises outputting a third packet different from the first packet when receiving a negative acknowledgement signal corresponding to the first packet.

10. The communications device of claim 9, wherein the third packet comprises at least an updated signaling message or an updated control message.

11. A method of handling packet data in a wireless communications system comprising:

activating a hybrid automatic repeat request process;

receiving a plurality of packets;

determining whether each of the plurality of packets is a data packet or a control message; and

discarding a first packet of the plurality of packets when the first packet is a control message and is not successfully received.

12. The method of claim 11 further comprising determining whether each of the plurality of packets is a data packet according to the packet lengths of the plurality of packets.

13. The method of claim 11 further comprising determining whether each of the plurality of packets is received successfully according to a Cyclic Redundancy Check operation.

14. The method of claim 11 further comprising calculating a bit correlation value between a second packet of the plurality of packets and a third packet for determining whether the second packet is a retransmission of the third packet when the second packet is determined to be a data packet.

15. The method of claim 14, wherein the third packet is a formerly received data packet before the second packet.

16. The method of claim 11 further comprising prohibiting transmission of any acknowledgement signals corresponding to a packet of the plurality of packets when the packet is determined to be a control message.

17. The method of claim 11 further comprising outputting a negative acknowledgement signal corresponding to a packet of the plurality of packets when the packet is not successfully received.

18. A communications device of a wireless communications system utilized for accurately handling packet data comprising:

a control circuit for realizing functions of the communications device;

a central processing unit installed in the control circuit for executing a program code to operate the control circuit; and

a memory coupled to the central processing unit for storing the program code;

wherein the program code comprises;

activating a hybrid automatic repeat request process;

receiving a plurality of packets;

determining whether each of the plurality of packets is a data packet or a control message; and

discarding a first packet of the plurality of packets when the first packet is a control message and is not successfully received.

19. The communications device of claim 18, wherein the program code further comprises determining whether each of the plurality of packets is a data packet according to the packet lengths of the plurality of packets.

20. The communications device of claim 18, wherein the program code further comprises determining whether each of the plurality of packets is received successfully according to a Cyclic Redundancy Check operation.

21. The communications device of claim 18, wherein the program code further comprises calculating a bit correlation value between a second packet of the plurality of packets and a third packet for determining whether the second packet is a retransmission of the third packet when the second packet is determined to be a data packet.

22. The communications device of claim 21, wherein the third packet is a formerly received data packet before the second packet.

23. The communications device of claim 18, wherein the program code further comprises prohibiting transmission of any acknowledgement signals corresponding to a packet of the plurality of packets when the packet is determined to be a control message.

24. The communications device of claim 18, wherein the program code further comprises outputting a negative acknowledgement signal corresponding to a packet of the plurality of packets when the packet is not successfully received.

25. A method of handling packet data in a wireless communications system comprising:

setting maximum number of transmissions for a data packet and a status report unit in a hybrid automatic repeat request process to be greater than 1;

activating a first hybrid automatic repeat request process; and

outputting a status report unit according to the maximum number of transmissions when the first hybrid automatic repeat request process matches a predefined condition.

26. The method of claim 25, wherein the predefined condition is that the first hybrid automatic repeat request process has not transmitted any data.

27. The method of claim 25, wherein the predefined condition is that the length of a previous transmitted data on the first hybrid automatic repeat request process is different from the length of the status report unit.

28. The method of claim 25, wherein the predefined condition is that the first hybrid automatic repeat request process has not transmitted any data for a predefined duration of time.

29. A communications device of a wireless communications system utilized for accurately handling packet data comprising:

a control circuit for realizing functions of the communications device;

a central processing unit installed in the control circuit for executing a program code to operate the control circuit; and

a memory coupled to the central processing unit for storing the program code;

wherein the program code comprises;

setting maximum number of transmissions for a data packet and a status report unit in a hybrid automatic repeat request process to be greater than 1;

activating a first hybrid automatic repeat request process; and

outputting a status report unit according to the maximum number of transmissions when the first hybrid automatic repeat request process matches a predefined condition.

30. The communications device of claim 29, wherein the predefined condition is that the first hybrid automatic repeat request process has not transmitted any data.

31. The communications device of claim 29, wherein the predefined condition is that the length of a previous transmitted data on the first hybrid automatic repeat request process is different from the length of the status report unit.

32. The communications device of claim 29, wherein the predefined condition is that the first hybrid automatic repeat request process has not transmitted any data for a predefined duration of time.

33. A method of outputting status report units in a wireless communications system comprising:

generating a plurality of status report messages according to a receiving status of packets;

forming a plurality of status report units, each comprising a padding field and one of the plurality of status report messages; and

filling padding fields of the plurality of status report units with random number data.

34. A communications device of a wireless communications system utilized for accurately outputting status report units comprising:

a control circuit for realizing functions of the communications device;

a central processing unit installed in the control circuit for executing a program code to operate the control circuit; and

a memory coupled to the central processing unit for storing the program code;

wherein the program code comprises;

generating a plurality of status report messages according to a receiving status of packets;

forming a plurality of status report units, each comprising a padding field and one of the plurality of status report messages; and

filling padding fields of the plurality of status report units with random number data.