Quick connect parameter exchange

• US 6,922,467 B2
• Filed: 08/12/2003
• Issued: 07/26/2005
• Est. Priority Date: 04/12/1999
• Status: Expired due to Term

• Current Assignee: Synaptics Incorporated
• Original Assignee: Conexant Systems Incorporated (Synaptics Incorporated)
• Inventors: Olafsson, Sverrir
• Primary Examiner(s): Eng, George
• Application Number:
  US10/640,102
• Publication Number:
  US 20040047454A1
• Time in Patent Office: 714 Days
• Field of Search: 379/93.01, 379/93.05, 379/93.08, 379/93.31, 379/93.32, 379/93.33, 379/93.34, 379/93.35, 379/215.01, 375/222, 375/233, 375/377, 709/227, 709/242
• US Class Current: 379/93.31
• CPC Class Codes: H04L 5/1438 Negotiation of transmission parameters prior to communication modified according to link quality H04L1/0001
• CPC Class Codes: H04L 69/24 Negotiation of communication capabilities
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04M 11/06 Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors

Abstract

The startup, retrain, renegotiation quick connect or other processes of handshaking between communication systems involve the exchange of certain modulation, constellation, precoder, prefilter and other communication related information. The communication systems exchange one long information sequence including all the necessary communication information. Subsequently, the communication systems start transmitting short sequences, including an acknowledgement information portion. If one of the communication systems does not receive an acknowledgement within a predetermined time or event, that communication system may retransmit another long information sequence. After such retransmission, the retransmitting communication system may continue transmitting the long information sequences or may start transmitting the short sequences once again. Eventually, each of the communication systems should receive a long information sequence and acknowledge their receipt of such sequence.

Claims

1. A training method for use by a first modem to reduce a training time associated with exchanging training parameters with a second modem, said training method comprising the steps of:

transmitting a first frame to said second modem, said first frame including a plurality of first training parameters;

transmitting one or more second frames to said second modem, after said step of transmitting said first frame, said second frame lacking said plurality of first training parameters and being shorter than said first frame;

receiving an acknowledgement from said second modem acknowledging receipt of said first frame by said second modem;

continuing said step of transmitting said one or more second frames after said receiving said acknowledgement if said first modem has not transmitted an acknowledgement to said second modem to indicate receipt of a plurality of second training parameters by said first modem from said second modem.

2. The training method of claim 1, wherein said plurality of first training parameters include modulation parameters.

3. The training method of claim 1, wherein said plurality of first training parameters include constellation parameters.

4. The training method of claim 1 further comprising the steps of:

receiving a third frame from said second modem, said third frame including said plurality of second training parameters; and

receiving one or more fourth frames from said second modem, after said step of receiving said third frame, said fourth frame lacking said plurality of second training parameters and being shorter than said third frame.

5. The training method of claim 4, wherein said step of receiving said acknowledgement includes receiving one of said one or more fourth frames with an acknowledgement indictor indicating receipt of said first frame by said second modem.

6. The training method of claim 4 further comprising the step of transmitting an acknowledgement to said second modem acknowledging receipt of said third frame from said second modem.

7. The training method of claim 1, wherein each of said first frame, second frame, third frame and fourth frame includes an acknowledgment indicator field.

8. A training method for use by a first modem to reduce a training time associated with exchanging training parameters with a second modem, said training method comprising the steps of:

receiving a first frame from said second modem, said first frame including a plurality of first training parameters;

receiving one or more second frames from said second modem, after said step of receiving said first frame, said second frame lacking said plurality of first training parameters and being shorter than said first frame;

transmitting an acknowledgement to said second modem acknowledging receipt of said first frame by said first modem;

continuing said step of receiving said one or more second frames after said transmitting said acknowledgement if said first modem has not received an acknowledgement from said second modem to indicate receipt of a plurality of second training parameters by said second modem from said first modem.

9. The training method of claim 8, wherein said plurality of first training parameters include modulation parameters.

10. The training method of claim 8, wherein said plurality of first training parameters include constellation parameters.

11. The training method of claim 8 further comprising the steps of:

transmitting a third frame to said second modem, said third frame including said plurality of second training parameters; and

transmitting one or more fourth frames to said second modem, after said step of transmitting said third frame, said fourth frame lacking said plurality of second training parameters and being shorter than said third frame.

12. The training method of claim 11, wherein said step of transmitting said acknowledgement includes transmitting one of said one or more fourth frames with an acknowledgement indictor indicating receipt of said first frame from said second modem.

13. The training method of claim 11 further comprising the step of receiving an acknowledgement from said second modem acknowledging receipt of said third frame from said first modem.

14. The training method of claim 8, wherein each of said first frame, second frame, third frame and fourth frame includes an acknowledgment indicator field.

15. A first modem configured to reduce a training time associated with exchanging training parameters with a second modem, said first modem comprising:

a transmitter configured to transmit a first frame to said second modem, said first frame including a plurality of first training parameters, said transmitter further configured to transmit one or more second frames to said second modem, after said transmitter transmits said first frame, said second frame lacking said plurality of first training parameters and being shorter than said first frame;

a receiver configured to receive an acknowledgement from said second modem acknowledging receipt of said first frame by said second modem;

wherein said transmitter continues to transmit one or more said second frames, after said receiver receives said acknowledgement, if said transmitter has not transmitted an acknowledgement to said second modem to indicate receipt of a plurality of second training parameters by said receiver from said second modem.

16. The first modem of claim 15, wherein said plurality of first training parameters include modulation parameters.

17. The first modem of claim 15, wherein said plurality of first training parameters include constellation parameters.

18. The first modem of claim 15, wherein said receiver is further configured to receive a third frame from said second modem, said third frame including said plurality of second training parameters, and wherein said receiver is further configured to receive one or more fourth frames from said second modem, after said receiver receiving said third frame, said fourth frame lacking said plurality of second training parameters and being shorter than said third frame.

19. The first modem of claim 18, wherein said receiver receiving said acknowledgement includes receiving one of said one or more fourth frames with an acknowledgement indictor indicating receipt of said first frame by said second modem.

20. The first modem of claim 19, wherein said transmitter is further configured to transmit an acknowledgement to said second modem acknowledging receipt of said third frame from said second modem.

21. The first modem of claim 15, wherein each of said first frame, second frame, third frame and fourth frame includes an acknowledgment indicator field.

22. A first modem configured to reduce a training time associated with exchanging training parameters with a second modem, said first modem comprising:

a receiver configured to receive a first frame from said second modem, said first frame including a plurality of first training parameters, said receiver further configured to receive one or more second frames from said second modem, after said receiver receives said first frame, said second frame lacking said plurality of first training parameters and being shorter than said first frame;

a transmitter configured to transmit an acknowledgement to said second modem acknowledging receipt of said first frame from said second modem;

wherein said receiver continues to receive one or more said second frames, after said transmitter transmits said acknowledgement, if said receiver has not received an acknowledgement from said second modem to indicate receipt of a plurality of second training parameters by said second modem from said transmitter.

23. The first modem of claim 22, wherein said plurality of first training parameters include modulation parameters.

24. The first modem of claim 22, wherein said plurality of first training parameters include constellation parameters.

25. The first modem of claim 22, wherein said transmitter is further configured to transmit a third frame to said second, said third frame including said plurality of second training parameters, and said transmitter is further configured to transmit one or more fourth frames to said second modem, after said transmitter transmitting said third frame, said fourth frame lacking said plurality of second training parameters and being shorter than said third frame.

26. The first modem of claim 25, wherein said transmitter transmitting said acknowledgement includes transmitting one of said one or more fourth frames with an acknowledgement indictor indicating receipt of said first frame from said second modem.

27. The first modem of claim 25, wherein said receiver is further configured to receive an acknowledgement from said second modem acknowledging receipt of said third frame from said first modem.

28. The first modem of claim 22, wherein each of said first frame, second frame, third frame and fourth frame includes an acknowledgment indicator field.

29. A computer readable medium including a computer software product executable by a processor in a first modem, said computer software product for use by a first modem to reduce a training time associated with exchanging training parameters with a second modem, said computer software product comprising:

code for transmitting a first frame to said second modem, said first frame including a plurality of first training parameters;

code for transmitting one or more second frames to said second modem, executed after said code for transmitting said first frame, said second frame lacking said plurality of first training parameters and being shorter than said first frame;

code for receiving an acknowledgement from said second modem acknowledging receipt of said first frame by said second modem;

continuing execution of said code for transmitting said one or more second frames after receiving said acknowledgement if said first modem has not transmitted an acknowledgement to said second modem to indicate receipt of a plurality of second training parameters by said first modem from said second modem.

30. The computer readable medium of claim 29, wherein said plurality of first training parameters include modulation parameters.

31. The computer readable medium of claim 29, wherein said plurality of first training parameters include constellation parameters.

32. The computer readable medium of claim 29, wherein said computer software product further comprising:

code for receiving a third frame from said second modem, said third frame including said plurality of second training parameters; and

code for receiving one or more fourth frames from said second modem, executed after said code for receiving said third frame, said fourth frame lacking said plurality of second training parameters and being shorter than said third frame.

33. The computer readable medium of claim 32, wherein said code for receiving said acknowledgement includes code for receiving one of said one or more fourth frames with an acknowledgement indictor indicating receipt of said first frame by said second modem.

34. The computer readable medium of claim 32, wherein said computer software product further comprising code for transmitting an acknowledgement to said second modem acknowledging receipt of said third frame from said second modem.

35. The computer readable medium of claim 29, wherein each of said first frame, second frame, third frame and fourth frame includes an acknowledgment indicator field.

36. A training method for use by a first modem to train with a second modem for reducing training time during exchange of training parameters between said first modem and said second modem, said training method comprising:

transmitting a long information sequence including a plurality of training parameters;

repeatedly transmitting a number of short information sequences for a predetermined period of time, after said transmitting said long information sequence, until receiving an acknowledgment from said second modem indicating receipt of said long information sequence by said second modem; and

retransmitting said long information sequence, after said repeatedly transmitting said number of said short information sequences and after expiration of said predetermined period of time, if said acknowledgement is not received from said second modem.

37. The method of claim 36, wherein each of said long information sequence and said short information sequence includes a type portion, and wherein said type portions distinguish said long information sequence from said short information sequence.

38. The method of claim 36, wherein said long information sequence is an MP frame and said short information sequence is an MPs frame.

39. The method of claim 36 further comprising:

receiving a long information sequence including said acknowledgement from said second modem.

40. The method of claim 36 further comprising:

receiving a short information sequence including said acknowledgement from said second modem.

41. The method of claim 36, wherein said long information sequence is a CP frame and said short information sequence is a CPs frame.

42. The method of claim 36, wherein said long information sequence is a CPa frame and said short information sequence is a CPas frame.

43. The method of claim 36, wherein said method is utilized as a part of a fast train handshake between said first modem and said second modem.