Communication systems, communication methods and a method of communicating data within a DECT communication system

• US 6,411,611 B1
• Filed: 05/18/1998
• Issued: 06/25/2002
• Est. Priority Date: 05/18/1998
• Status: Expired due to Fees

• Current Assignee: NXP B.V. (NXP Semiconductors NV)
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Van Der Tuijn, Roland
• Primary Examiner(s): Vincent, David
• Assistant Examiner(s): Phunkulh, Bob A.
• Application Number:
  US09/080,647
• Time in Patent Office: 1,499 Days
• Field of Search: 370/328, 370/329, 370/330, 370/336, 370/337, 370/343, 370/344, 370/347, 370/442, 455/422, 455/426, 455/434, 455/450
• US Class Current: 370/337
• CPC Class Codes: H04B 7/2656 for structure of frame, burst
• CPC Class Codes: H04J 4/00 Combined time-division and frequency-division multiplex systems H04J13/00 takes precedence ; data transmission H04L5/26; telemetry G08C15/00

Abstract

The present invention includes communication systems, communication methods and a method of communicating data within a DECT communication system. One embodiment of the present invention provides a communication system including a radio having a synthesizer operable to generate a carrier signal responsive to frequency data, the radio being configured to communicate a plurality of slots using the carrier signal; a control processor configured to generate control information regarding the slots; and a data processor coupled with the radio and the control processor, the data processor being configured to use the control information to identify a first slot and a subsequent slot responsive to the identification of the first slot, the data processor being further configured to control the output of frequency data to the radio responsive to the identification of the first slot and the second slot.

Claims

1. A communication system comprising:

a radio having a synthesizer operable to generate a carrier signal responsive to frequency data, the radio being configured to communicate a plurality of slots using the carrier signal;

a control processor configured to generate control information regarding the slots; and

a data processor coupled with the radio and the control processor, the data processor being configured to use the control information to identify a first slot and a subsequent slot responsive to the identification of the first slot, the data processor being further configured to control the output of frequency data to the radio responsive to the identification of the first slot and the subsequent slot.

2. The communication system according to claim 1 wherein the data processor includes a multiple access processor configured to provide conversion operations of a data signal to a plurality of slots.

3. The communication system according to claim 1 wherein the data processor comprises integrated circuitry.

4. The communication system according to claim 1 wherein the data processor is configured to control the output of the frequency data to the synthesizer within a guard band intermediate slot data of adjacent slots.

5. The communication system according to claim 1 wherein the data processor is configured to control the output of frequency data corresponding to the subsequent slot to the synthesizer prior to communication of the first slot.

6. The communication system according to claim 1 wherein the data processor is configured to identify the length of the first slot.

7. The communication system according to claim 1 wherein the data processor is configured to identify the type of the subsequent slot.

8. The communication system according to claim 1 wherein the data processor is configured to vary the timing of outputting of the frequency data to the radio.

9. The communication system according to claim 1 wherein the data processor is configured to vary the timing of outputting of the frequency data to the radio responsive to the first slot being a double slot and the subsequent slot being an active slot.

10. The communication system according to claim 1 wherein the communication system comprises a DECT communication system.

11. The communication system according to claim 1 wherein the first slot and second slot have different lengths.

12. The communication system according to claim 1 wherein the radio comprises:

a first synthesizer configured to generate a carrier signal to communicate the first slot; and

a second synthesizer configured to generate a carrier signal to communicate the subsequent slot.

13. The communication system according to claim 12 wherein the data processor is configured to control the output of frequency data corresponding to the subsequent slot to the second synthesizer before communication of the first slot using the first synthesizer.

14. A communication method comprising:

providing a carrier signal having a frequency;

communicating a plurality of slots including a first slot and a subsequent slot using the carrier signal;

identifying the first slot;

identifying the subsequent slot responsive to the identifying the first slot;

outputting frequency data responsive to the identifying the subsequent slot; and

changing the frequency of the carrier signal responsive to the outputted frequency data.

15. The method according to claim 14 further comprising converting the slots into a data signal.

16. The method according to claim 14 wherein the outputting and changing comprise outputting and changing during a guard band intermediate slot data of adjacent slots.

17. The method according to claim 14 wherein the identifyings comprise using integrated circuitry.

18. The method according to claim 14 wherein the outputting comprises outputting frequency data corresponding to the subsequent slot prior to communicating the first slot.

19. The method according to claim 14 wherein the outputting comprises outputting frequency data corresponding to a subsequent slot comprising a full slot prior to communicating the first slot comprising a double slot.

20. The method according to claim 14 wherein the identifying the first slot comprises identifying the length of the first slot.

21. The method according to claim 14 wherein the identifying the subsequent slot comprises identifying the type of the subsequent slot.

22. The method according to claim 14 wherein the communicating comprises communicating the first slot using a first synthesizer and communicating the second slot using a second synthesizer.

23. The method according to claim 22 wherein the outputting comprises outputting frequency data corresponding to the subsequent slot to the second synthesizer before communication of the first slot using the first synthesizer.

24. The method according to claim 14 further comprising communicating the subsequent slot using the changed frequency.

25. The method according to claim 14 further comprising communicating the first slot before the changing.

26. The method according to claim 14 wherein the communicating comprises communicating slots having a plurality of lengths.

27. The method according to claim 14 wherein the communicating comprises communicating DECT slots.

28. The method according to claim 14 further comprising communicating the subsequent slot using the outputted frequency data following the communicating of the first slot.

29. The method according to claim 14 further comprising varying the timing of the outputting responsive to the identifying the first and subsequent slots.

30. The method according to claim 14 wherein the providing includes generating a carrier signal using a synthesizer and the outputting comprises outputting the frequency data to the synthesizer.

31. The method according to claim 14 further comprising varying the timing of the outputting responsive to identifying the length of the first slot.

32. A communication method comprising:

communicating a plurality of slots including a first slot and a subsequent slot;

identifying the first slot;

identifying the subsequent slot responsive to the identifying the first slot;

outputting frequency data regarding the subsequent slot responsive to the identifyings; and

communicating the first slot following the outputting.

33. The method according to claim 32 further comprising converting the slots into a data signal.

34. The method according to claim 32 wherein the outputting comprises outputting during a guard band intermediate slot data of adjacent slots.

35. The method according to claim 32 wherein the identifyings comprise using integrated circuitry.

36. The method according to claim 32 wherein the outputting comprises outputting frequency data corresponding to the subsequent slot prior to communicating the first slot.

37. The method according to claim 32 wherein the outputting comprises outputting to a synthesizer.

38. The method according to claim 32 wherein the communicating comprises communicating slots having a plurality of lengths.

39. The method according to claim 32 wherein the identifying the first slot comprises identifying the length of the first slot.

40. The method according to claim 32 wherein the identifying the subsequent slot comprises identifying the type of the subsequent slot.

41. The method according to claim 32 further comprising communicating the subsequent slot using the outputted frequency data.

42. The method according to claim 32 wherein the communicating comprises communicating DECT slots.

43. The method according to claim 32 further comprising varying the timing of the outputting responsive to the identifying the first and subsequent slots.

44. A communication method comprising:

providing data in a plurality of DECT slots;

generating a carrier signal using a synthesizer;

communicating slot data of the DECT slots using the carrier signal;

generating frequency data corresponding to the DECT slots;

outputting frequency data to the synthesizer intermediate communication of slot data of adjacent DECT slots;

changing the frequency of the carrier signal responsive to the outputting of the frequency data; and

varying the timing of the outputting of the frequency data.

45. The method according to claim 44 further comprising identifying a first DECT slot and a subsequent DECT slot.

46. The method according to claim 45 wherein the varying is responsive to the identifying.

47. The method according to claim 44 wherein the communicating comprises communicating DECT slots having a plurality of lengths.

48. The method according to claim 44 wherein the outputting comprises outputting during a guard band intermediate slot data of adjacent DECT slots.

49. The method according to claim 44 wherein the varying is responsive to identifying the length of a DECT slot.

50. The method according to claim 44 further comprising communicating using the carrier signal having a changed frequency.

51. A method of communicating data within a DECT communication system comprising:

forming a first DECT slot and a subsequent DECT slot;

generating first frequency data corresponding to the first DECT slot and second frequency data corresponding to the subsequent slot;

identifying the length of the first DECT slot;

identifying the subsequent DECT slot;

outputting the first frequency data to a synthesizer;

loading the synthesizer with the first frequency data;

settling the synthesizer at the first frequency following the loading the synthesizer with the first frequency data;

generating a carrier signal having the first frequency;

communicating the first slot using the first frequency carrier signal;

outputting the second frequency data to the synthesizer responsive to identifying the subsequent slot as an active slot, the outputting occurring prior to the communicating the first slot;

loading the synthesizer with the second frequency data;

adjusting the synthesizer according to the second frequency data;

settling the synthesizer at the second frequency following the loading the synthesizer with the second frequency data;

generating another carrier signal having the second frequency;

communicating the subsequent slot using the second frequency carrier signal; and

varying the timing of one of the outputtings responsive to identifying the first and second DECT slots.