Method and device for providing multiple communication protocols with a single transceiver

• US 7,809,399 B2
• Filed: 02/06/2007
• Issued: 10/05/2010
• Est. Priority Date: 02/10/2006
• Status: Expired due to Fees

• Current Assignee: Syntek International Holding Ltd. (Syntek Semiconductor Co., Ltd.)
• Original Assignee: Syntek International Holding Ltd. (Syntek Semiconductor Co., Ltd.)
• Inventors: Chen, Michael, Jiang, Chongjun, Lu, Kan, Hong, Huiyong, Wu, Shuangli, Tang, Yiyan, Xu, Bin, Wu, Feng
• Primary Examiner(s): FERGUSON, KEITH
• Application Number:
  US11/702,278
• Publication Number:
  US 20070197256A1
• Time in Patent Office: 1,337 Days
• Field of Search: 4555501-5531, 455/426.1, 455/426.2, 455/445, 455/67.11, 455/412.1, 455/412.2, 4554141-4144, 455/422.1, 455/403, 370/328, 370/329, 370/330, 370/337, 370/350, 370/347, 370/343, 370508-514
• US Class Current: 455/550.1
• CPC Class Codes: H04B 1/406 with more than one transmission mode, e.g. analog and digital modes

Abstract

A wireless communication device and the method thereof are disclosed. The wireless communication device in accordance with the present invention includes an integrated protocol layer supporting a first communication protocol and a second communication protocol; a single transceiver operative to transmit and receive signals of said first and said second communication protocols.

Claims

1. A wireless communication device, comprising:

an integrated protocol layer supporting a first communication protocol and a second communication protocol; and

a single transceiver operative to transmit and/or receive signals of said first and said second communication protocols,

wherein said first communication protocol covers a shorter distance range than that of said second communication protocol, and wherein said first communication protocol includes a first mode and a second mode, each of said first and second modes of said first communication protocol can coexist with said second communication protocol.

2. The wireless communication device of claim 1, further comprising an interference-reducing mechanism operative to reduce an interference occurred between said first and second communication protocols, wherein said interference-reducing mechanism allows said single transceiver to support both said first and said second communication protocols.

3. The wireless communication device of claim 2, wherein said interference-reducing mechanism allows said single transceiver to support both said first and said second communication protocols based on a time-division-multiplexing scheme.

4. The wireless communication device of claim 3, wherein said time-division-multiplexing scheme allows a time slot of an operation time to be assigned to a transmission of said first or said second communication protocols.

5. The wireless communication device of claim 4, wherein said assignment of time slot is done dynamically using an adaptive frequency hopping scheme, a fixed length time slot sharing scheme, a flexible length time slot sharing scheme, a preemption based time sharing scheme, an on demand time sharing scheme or any combination thereof.

6. The wireless communication device of claim 4, wherein one or any combination of the following methods may be used to ensure a transmit packet of said first or second communication protocols is completed within said time slot:

1) drop said packet,

     2) hold back said packet to be transmitted at the beginning of a next time slot,

     3) raise a transmission rate of said packet,

     4) assign multiple time slots for said packet, or

     5) enlarge said time slot to fit in said packet.

7. The wireless communication device of claim 6, wherein said method of enlarging said time slot to fit in said packet can be accomplished by obtaining a token for said second communication protocol each time an operation of said first communication protocol is performed such that when a predetermined number of said token is reached, said method of enlarging said time slot to fit in said packet is performed.

8. The wireless communication device of claim 6, wherein said interference-reducing mechanism controls said transmission rate and a length of said packet to be transmitted to best fit said time slot.

9. The wireless communication device of claim 4, wherein one or any combination of the following methods may be used to ensure a receive packet of said first or second communication protocols is completed within said time slot:

1) drop said packet,

     2) assign multiple time slots for said packet, or

     3) enlarge said time slot to fit in said packet.

10. The wireless communication device of claim 9, wherein said method of enlarging said time slot to fit in said packet can be accomplished by obtaining a token for said second communication protocol each time an operation of said first communication protocol is performed such that when a predetermined number of said token is reached, said method of enlarging said time slot to fit in said packet is performed.

11. The wireless communication device of claim 4, wherein said interference-reducing mechanism improves said transmission of said first or said second communication protocols based on an identification in said operation time.

12. The wireless communication device of claim 4, wherein a synchronization mechanism is performed in accordance with said assignment of time slot on an external device attempting to communicate with said wireless communication device.

13. The wireless communication device of claim 12, wherein said synchronization mechanism is performed dynamically using a CTS_SELF packet signal or other signal or methods.

14. The wireless communication device of claim 2, wherein when said wireless communication device is active in one of said first and second communication protocols, said interference-reducing mechanism is operative to transmit a signal to an external device preventing said external device from transmitting signals of other one of said first and second communication protocols to said wireless communication device.

15. The wireless communication device of claim 14, wherein said interference-reducing mechanism further saves information necessary to restore transmission of said the other one of said first and second communication protocols.

16. The wireless communication device of claim 2, wherein when said wireless communication device is in said first or said second mode of said first communication protocol, said interference-reducing mechanism is operative to prevent a transmission of said second communication protocol without terminating said transmission of said second communication protocol.

17. The wireless communication device of claim 2, wherein said interference-reducing mechanism extracts signals of said first communication protocol from signals of said first and said second communication protocols.

18. The wireless communication device of claim 2, wherein said interference-reducing mechanism controls a transmit power of said single transceiver.

19. The wireless communication device of claim 2, wherein said interference-reducing mechanism chooses an access point for said second communication protocol by one or a combination of the following ways:

1) choosing an access point with a 5 GHz channel available;

     2) choosing an access point at a preferred distance;

     3) choosing an access point with a lighter traffic;

     4) choosing an access point with a preferred traffic pattern;

     5) choosing an access point not using only IEEE802.11g ERP protocol; and

     6) choosing an access point with point coordination function.

20. A single transceiver embedded with an interference-reducing mechanism of claim 2.

21. The wireless communication device of claim 1, wherein said first mode is a Synchronous Connection-Oriented (SCO) link mode, and said second mode is an Asynchronous Connection-Less (ACL) link mode.

22. The wireless communication device of claim 1, further comprising a user interface to configure said single transceiver to work with said first communication protocol, or said second communication protocol or a combination thereof.

23. The wireless communication device of claim 1, wherein said first communication protocol is a Bluetooth communication protocol and said second communication protocol is a wireless local area network communication protocol.

24. The wireless communication device of claim 1, wherein said single transceiver is a wireless local area network transceiver.

25. The wireless communication device of claim 1, wherein said single transceiver employs a single antenna, a single signal path for said first and second communication protocols, a single baseband firmware, or a single driver software.

26. The wireless communication device of claim 25, wherein said single signal path for said first and second communication protocols include single receive signal path, single transmit signal path, single VCO (voltage controlled oscillator), single PLL (phase lock loop), single frequency synthesizer, single PA Bias, single RF low pass filter, and single RF/baseband interface.

27. The wireless communication device of claim 26, wherein said single receive signal path includes single A/D converter, single LNA, single Rx amplifier, single Rx gain control, and single RSSI (Receive Signal Strength Indication).

28. The wireless communication device of claim 26, wherein said single transmit signal path includes single D/A converter, single Tx power amplifier, and single Tx VGA gain control.

29. The wireless communication device of claim 25, wherein said single baseband firmware may implement a baseband layer of said first and second communication protocols on a single DSP (digital signal processor) chip and switch between said first and second communication protocols based on a TDM (time-division-multiplexing) scheme.

30. The wireless communication device of claim 29, wherein said switching between said first and second communication protocols on said single DSP chip may be performed seamlessly without terminating a link in said first or second communication protocol.

31. The wireless communication device of claim 29, wherein said TDM scheme may allocate a fixed or flexible length time slot for said first and second communication link in an on-demand or preemption manner.

32. The wireless communication device of claim 1, wherein said first and second communication protocols are switched seamlessly on said single transceiver from a user'"'"'s perspective.

33. The wireless communication device of claim 1, wherein said device further comprises a driver allowing said device to be recognized as either a first communication protocol device or a second communication protocol device or a multi-functional device for combined first and second communication protocols.

34. The wireless communication device of claim 1, further comprising a calibration mechanism so as to secure a time slot allocation for said first and said second communication protocols.

35. The wireless communication device of claim 34, wherein said calibration mechanism can further synchronize between paired devices of one of said first and said second communication protocols.

36. A wireless communication device, comprising:

an integrated protocol layer supporting a first communication protocol and a second communication protocol; and

a single transceiver operative to transmit and/or receive signals of said first and said second communication protocols wherein a signal is sent to said integrated protocol layer to pause any operation of one of said first and second communication protocols when an operation of other one of said first and said second communication protocol is active.

37. A wireless communicating method, adapted in a single device, said method comprising:

supporting a first communication protocol and a second communication protocol in said single device; and

transmitting and receiving signals of said first and said second communication protocols;

wherein said single device employs a single transceiver for said transmitting and receiving signals of said first and said second communication protocols, and

wherein said first communication protocol covers a shorter distance range than that of said second communication protocol, and

wherein said first communication protocol includes a first mode and a second mode, each of said first and second modes of said first communication protocol can coexist with said second communication protocol.

38. The wireless communication method of claim 37, further comprising reducing interference occurred between said first and said second communication protocols in said single device.

39. The wireless communication method of claim 37, wherein a time-division-multiplexing scheme is utilized to allow said single device to support said first and said second communication protocols.

40. The wireless communicating method of claim 39, wherein said time-division-multiplexing scheme allows a time slot of an operation time to be assigned to a transmission of said first or said second communication protocols.

41. The wireless communicating method of claim 40, further comprising ensuring a transmit or receive packet of said first or second communication protocols is completed within said operation time.

42. The wireless communicating method of claim 41, further comprising enlarging a current slot to fit in said packet by obtaining a token for said second communication protocol each time an operation of said first communication protocol is performed such that when a predetermined number of said token is reached, said method of enlarging the current slot in said packet is performed.

43. The wireless communication device of claim 41, further comprising controlling a transmission rate and a length of said packet to best fit said time slots.

44. The wireless communication device of claim 40, further comprising improving said transmission of said first or said second communication protocols based on an identification in said operation time.

45. The wireless communication method of claim 37, wherein said first mode is a Synchronous Connection-Oriented (SCO) link mode, and said second mode is an Asynchronous Connection-Less (ACL) link mode.

46. The wireless communicating method of claim 37, wherein when said single device is in said first or said second mode of said first communication protocol, said method further comprises preventing a transmission of said second communication protocol without terminating said transmission of said second communication protocol.

47. The wireless communicating method of claim 37, further comprising extracting signals of said first communication protocol from signals of said first and said second communication protocols.

48. The wireless communicating method of claim 37, further comprising configuring said single device to work with said first communication protocol, or said second communication protocol or a combination thereof via a user interface.

49. The wireless communicating method of claim 37, further comprising controlling a transmit power of said single device.

50. The wireless communicating method of claim 37, further comprising assigning a time slot in one of the following schemes:

dynamically using an adaptive frequency hopping scheme, a fixed length time slot sharing scheme, a flexible length time slot sharing scheme, a preemption based time sharing scheme, an on demand time sharing scheme or any combination thereof.

51. The wireless communicating method of claim 50, further comprising synchronizing an external device attempting to communicate with said single device in accordance with said assignment of time slot.

52. The wireless communication method of claim 51, wherein said synchronization is performed dynamically using a CTS_SELF packet signal or other signal or methods.

53. The wireless communication device of claim 37, further comprising calibrating a time slot so as to secure a time slot allocation for said first or said second communication protocols.

54. The wireless communication method of claim 37, further comprising choosing an access point for said second communication protocol by one or a combination of the following ways:

1) choosing an access point with 5 GHz channels available;

     2) choosing an access point at a preferred distance;

     3) choosing an access point with a lighter traffic;

     4) choosing an access point with a preferred traffic pattern;

     5) choosing an access point not using only IEEE802.11g ERP protocol;

     6) choosing an access point with a point coordination function.

55. A wireless communicating method, adapted in a single device, said method comprising:

supporting a first communication protocol and a second communication protocol in said single device; and

transmitting and receiving signals of said first and said second communication protocols;

wherein said single device employs a single transceiver for said transmitting and receiving signals of said first and said second communication protocols, and

wherein when said single device is active in one of said first and said second communication protocols, transmitting a signal to an external device preventing said external device from transmitting signals of other one of said first and said second communication protocols to said single device.

56. The wireless communication method of claim 55, further comprising saving information necessary to restore transmission of said the other one of said first and second communication protocols.

57. A wireless communicating method, adapted in a single device, said method comprising:

supporting a first communication protocol and a second communication protocol in said single device; and

transmitting and receiving signals of said first and said second communication protocols;

wherein said single device employs a single transceiver for said transmitting and receiving signals of said first and said second communication protocols, and

wherein sending a signal to pause any operation of one of said first and second communication protocols when an operation of other one of said first and said second communication protocol is active.

58. A single transceiver supporting a first communication protocol and a second communication protocol, wherein said first communication protocol covers a shorter distance range than that of said second communication protocol, and wherein said first communication protocol includes a first mode and a second mode, each of said first and second modes of said first communication protocol can coexist with said second communication protocol so that said first communication protocol and said second communication protocol can be switched seamlessly from a user'"'"'s perspective.

59. The single transceiver of claim 58, wherein said single transceiver employs a single antenna, a single signal path for said first and second communication protocols, a single baseband firmware, or a single driver software.

60. The single transceiver of claim 59, wherein said single transceiver is a wireless local area network transceiver.