RACH-ramp-up acknowledgement

• US 8,718,150 B2
• Filed: 02/23/2009
• Issued: 05/06/2014
• Est. Priority Date: 03/22/1999
• Status: Expired due to Fees

• Current Assignee: Apple Inc.
• Original Assignee: Golden Bridge Technology Incorporated
• Inventors: Kanterakis, Emmanuel, Parsa, Kourosh
• Primary Examiner(s): Bocure, Tesfaldet
• Application Number:
  US12/390,860
• Publication Number:
  US 20090161635A1
• Time in Patent Office: 1,898 Days
• Field of Search: 375/130, 375140-147, 375149-152, 375362-368, 375/377, 375/358, 370/328, 370/335, 370/342, 370/345, 370/347, 370/442, 370/445, 370/218, 370525-529, 370/503, 370/278, 370/441, 455/515, 455/516, 455/450, 455/509, 455/517, 455/513, 455/500
• US Class Current: 375/259
• CPC Class Codes: H04B 1/707 using direct sequence modulation
• CPC Class Codes: H04B 1/7075 with code phase acquisition
• CPC Class Codes: H04B 2201/70701 featuring pilot assisted reception
• CPC Class Codes: H04B 2201/70702 Intercell-related aspects
• CPC Class Codes: H04B 7/2668 Arrangements for Wireless Code-Division Multiple Access [CDMA] System Synchronisation, for code acquisition H04B1/7075, for code tracking H04B1/7085
• CPC Class Codes: H04J 11/0069 Cell search, i.e. determining cell identity [cell-ID] design of multiplexing codes H04J13/00; processing access restriction or access information H04W48/16; discovery of network devices for network data management H04W8/005; sounding signals for channel estimation H04L25/0226; structure of reference signals in multicarrier modulation systems H04L27/2613; frame, time or carrier synchronisation in multicarrier modulation systems H04L27/2655
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 52/325 Power control of control or pilot channels
• CPC Class Codes: H04W 52/362 Aspects of the step size
• CPC Class Codes: H04W 52/367 Power values between minimum and maximum limits, e.g. dynamic range
• CPC Class Codes: H04W 52/48 during retransmission after error or non-acknowledgment
• CPC Class Codes: H04W 56/00 Synchronisation arrangements
• CPC Class Codes: H04W 74/00 Wireless channel access

Abstract

A disclosed code-division-multiple-access (CDMA) system has a base station (BS) and remote stations (RSs). A BS-spread-spectrum transmitter broadcasts a common-synchronization channel having a chip-sequence signal common to the remote stations served by the BS, and a frame-timing signal. A RS-spread-spectrum receiver receives the broadcast common-synchronization channel, and determines frame timing from the frame-timing signal. A first RS-spread-spectrum transmitter transmits an access-burst signal, which has a plurality of segments. Each access burst signal segment has a plurality of power levels. A BS-spread-spectrum receiver receives the access-burst signal at a detected-power level. In response to receiving the access-burst signal, a BS-spread-spectrum transmitter transmits an acknowledgment signal to the RS-spread-spectrum receiver. The RS-spread-spectrum receiver receives the acknowledgment signal, and in, the RS-spread-spectrum transmitter transmits a spread-spectrum signal having data to the BS-spread-spectrum receiver.

Claims

1. A wireless mobile station, comprising:

a transmitter;

a receiver;

a controller coupled to the receiver for responding to signals received via the receiver and coupled for controlling the transmitter, such that in operation the controller causes the mobile station to perform functions, including functions to;

(a) generate a first coded signal which does not include any message data;

(b) transmit the first coded signal to a base station, at a first separate and distinct power level;

(c) transmit a second coded signal to the base station, without any message data, at a second separate and distinct power level higher than the first separate and distinct power level, upon expiration of a predetermined interval following the transmission of the first coded signal at the first separate and distinct power level, provided that no L1 acknowledgment corresponding to the first coded signal is received at the mobile station, each of the first and second coded signals comprising one or more codes that are used to distinguish the wireless mobile station from one or more other mobile stations;

(d) cease coded signal transmission to the base station upon receiving a L1 acknowledgment corresponding to a transmitted coded signal; and

(e) transmit message data after ceasing coded signal transmission, and wherein the wireless mobile station further comprises;

an acknowledgment detector, coupled to the receiver, for detecting the L1 acknowledgment;

an encoder for encoding said message data;

a generator for generating said first coded signal and second coded signal; and

a formatter, coupled to the encoder, for formatting the encoded message data.

2. The wireless mobile station of claim 1, wherein:

in operation, the controller causes the mobile station to obtain synchronization data from the base station prior to the generating of the first coded signal.

3. The wireless mobile station of claim 2, wherein:

in operation, the controller causes the mobile station to transmit the first coded signal at a timing based on the synchronization data.

4. The wireless mobile station of claim 1, wherein said receiver comprises:

an analog-to-digital converter for converting the received message data from an antenna to a digital signal; and

a component responsive to the digital signal from the analog-to-digital converter for processing the received message data and detecting transmitted data.

5. The wireless mobile station of claim 1, wherein said transmitter comprises a digital to analog converter responsive to digital signals from the formatter.

6. The wireless mobile station of claim 5, wherein:

said mobile station further comprises;

a modulator; and

a variable gain device, coupled to the formatter, for adjusting levels of output from the formatter before application thereof to the modulator.

7. The wireless mobile station of claim 1, wherein the controller causes the mobile station to cease coded signal transmission to the base station if no L1 acknowledgment corresponding to a transmitted coded signal has been received after a maximum number of repetitions.

8. The wireless mobile station of claim 1, wherein the controller causes the mobile station to further transmit additional coded signals to the base station, without any message data, at increasing separate and distinct power levels, each higher than a prior separate and distinct power level, until a maximum power level is reached.

9. The wireless mobile station of claim 1, wherein the mobile station further performs functions to:

transmit a collision detection signal to the base station after receipt of the L1 acknowledgement;

receive a base station collision detection signal from the base station, the base station collision detection signal corresponding to the transmitted collision detection signal;

transmit any of data and control information to the base station, after receipt of the base station collision detection signal; and

receive any of data and control information from the base station.

10. The wireless mobile station of claim 1, wherein the mobile station further performs functions to:

transmit a collision detection signal to the base station following receipt of the L1 acknowledgement; and

cease signal transmission to the base station after a period of time if no base station collision detection signal corresponding to the transmitted collision detection signal has been received from the base station.

11. A wireless mobile station, comprising:

a transmitter;

a receiver;

a controller coupled to the receiver for responding to signals received via the receiver and coupled for controlling the transmitter, such that in operation the controller causes the mobile station to perform functions, including functions to;

(a) generate a first coded signal which does not include any message data;

(b) transmit the first coded signal to a base station, without any message data, at a first power level;

(c) transmit a second coded signal to the base station, without any message data, at a second power level a step higher than the first power level, upon expiration of a predetermined interval following the transmission of the first coded signal at the first power level, provided that no L1 acknowledgment corresponding to the coded signal is received at the mobile station, each of the first and second coded signals comprising one or more codes that are used to distinguish the wireless mobile station from one or more other mobile stations;

(d) cease coded signal transmission to the base station upon receiving a L1 acknowledgment corresponding to a transmitted coded signal; and

(e) transmit message data after ceasing coded signal transmission, and

wherein the wireless mobile station further comprises;

an acknowledgment detector, coupled to the receiver, for detecting the L1 acknowledgment;

an encoder for encoding said message data;

a preamble generator for generating said first coded signal and second coded signal; and

a formatter, coupled to the encoder, for formatting the encoded message data.

12. The wireless mobile station of claim 11, wherein:

in operation, the controller causes the mobile station to obtain synchronization data from the base station prior to generating the first coded signal.

13. The wireless mobile station of claim 12, wherein:

in operation, the controller causes the mobile station to transmit the first coded signal at a timing based on the synchronization data.

14. The wireless mobile station of claim 11, wherein said receiver comprises:

an analog-to-digital converter for converting the received message data from an antenna to a digital signal; and

a component responsive to the digital signal from the analog-to-digital converter for processing the received message data and detecting transmitted data.

15. The wireless mobile station of claim 11, wherein said transmitter comprises a digital to analog converter responsive to digital signals from the formatter.

16. The wireless mobile station of claim 15, wherein:

said mobile station further comprises;

a modulator; and

a variable gain device, coupled to the formatter, for adjusting levels of output from the formatter before application thereof to the modulator.

17. The wireless mobile station of claim 11, wherein the controller causes the mobile station to cease coded signal transmission to the base station if no L1 acknowledgment corresponding to a transmitted coded signal has been received after a maximum number of repetitions.

18. The wireless mobile station of claim 11, wherein the controller causes the mobile station to further transmit additional coded signals to the base station, without any message data, at increasing separate and distinct power levels, each higher than a prior separate and distinct power level, until a maximum power level is reached.

19. The wireless mobile station of claim 11, wherein the mobile station further performs functions to:

transmit a collision detection signal to the base station after receipt of the L1 acknowledgement;

receive a base station collision detection signal from the base station, the base station collision detection signal corresponding to the transmitted collision detection signal;

transmit any of data and control information to the base station, after receipt of the base station collision detection signal; and

receive any of data and control information from the base station.

20. The wireless mobile station of claim 11, wherein the mobile station further performs functions to:

transmit a collision detection signal to the base station following receipt of the L1 acknowledgement; and

cease signal transmission to the base station after a period of time if no base station collision detection signal corresponding to the transmitted collision detection signal has been received from the base station.

21. A wireless mobile station, comprising:

a transmitter;

a receiver;

a controller coupled to the receiver for responding to signals received via the receiver and coupled for controlling the transmitter, such that in operation the controller causes the mobile station to perform functions, including functions to;

(a) generate a first coded signal which does not include any message data;

(b) transmit the first coded signal to a base station, without any message data, at a first separate and distinct power level;

(c) transmit a second coded signal to the base station, without any message data, at a second separate and distinct power level higher than the first separate and distinct power level, upon expiration of a predetermined interval following the end of the transmission of the first coded signal at the first separate and distinct power level, provided that no L1 acknowledgment corresponding to the first coded signal is received at the mobile station, each of the first and second coded signals comprising one or more codes that are used to distinguish the wireless mobile station from one or more other mobile stations;

(d) cease coded signal transmission to the base station upon receiving a L1 acknowledgment corresponding to a previously transmitted coded signal; and

(e) transmit data to the base station only after ceasing coded signal transmission, and

wherein the wireless mobile station further comprises;

an acknowledgment detector, coupled to the receiver, for detecting the L1 acknowledgment;

an encoder for encoding said message data;

a generator for generating said first coded signal and second coded signal; and

a formatter, coupled to the encoder, for formatting the encoded message data.

22. The wireless mobile station of claim 21, wherein:

in operation, the controller causes the mobile station to obtain synchronization data from the base station prior to generating the first coded signal.

23. The wireless mobile station of claim 22, wherein:

in operation, the controller causes the mobile station to transmit the first coded signal at a timing based on the synchronization data.

24. The wireless mobile station of claim 21, wherein said receiver comprises:

an analog-to-digital converter for converting the received message data from an antenna to a digital signal; and

a component responsive to the digital signal from the analog-to-digital converter for processing the received message data and detecting transmitted data.

25. The wireless mobile station of claim 21, wherein said transmitter comprises a digital to analog converter responsive to digital signals from the formatter.

26. The wireless mobile station of claim 25, wherein:

said mobile station further comprises;

a modulator; and

a variable gain device, coupled to the formatter, for adjusting levels of output from the formatter before application thereof to the modulator.

27. The wireless mobile station of claim 21, wherein the controller causes the mobile station to cease coded signal transmission to the base station if no L1 acknowledgment corresponding to a transmitted coded signal has been received after a maximum number of repetitions.

28. The wireless mobile station of claim 21, wherein the controller causes the mobile station to further transmit additional coded signals to the base station, without any message data, at increasing separate and distinct power levels, each higher than a prior separate and distinct power level, until a maximum power level is reached.

29. The wireless mobile station of claim 21, wherein the mobile station further performs functions to:

transmit a collision detection signal to the base station after receipt of the L1 acknowledgement;

receive a base station collision detection signal from the base station, the base station collision detection signal corresponding to the transmitted collision detection signal;

transmit any of data and control information to the base station, after receipt of the base station collision detection signal; and

receive any of data and control information from the base station.

30. The wireless mobile station of claim 21, wherein the mobile station further performs functions to:

transmit a collision detection signal to the base station following receipt of the L1 acknowledgement; and

cease signal transmission to the base station after a period of time if no base station collision detection signal corresponding to the transmitted collision detection signal has been received from the base station.

31. A wireless mobile station, comprising:

a controller coupled to a receiver and to a transmitter, such that in operation the controller causes the mobile station to perform functions, including functions to;

(a) generate a first coded signal which does not include any message data;

(b) transmit the first coded signal to a base station, without any message data, at a first power level;

(c) transmit a second coded signal to the base station, without any message data, at a second power level a separate and distinct step higher than the first power level, upon expiration of a predetermined interval following the transmission of the first coded signal at the first power level, provided that no L1 acknowledgment corresponding to the first coded signal is received at the mobile station, each of the first and second coded signals comprising one or more codes that are used to distinguish the wireless mobile station from one or more other mobile stations;

(d) cease coded signal transmission to the base station upon receiving a L1 acknowledgment corresponding to a transmitted coded signal; and

(e) transmit message data after ceasing coded signal transmission, and

wherein the wireless mobile station further comprises;

an acknowledgment detector, coupled to the receiver, for detecting the L1 acknowledgment;

an encoder for encoding said message data;

a generator for generating said first coded signal and second coded signal; and

a formatter, coupled to the encoder, for formatting the encoded message data.

32. The wireless mobile station of claim 31, wherein:

in operation, the controller causes the mobile station to obtain synchronization data from the base station prior to generation of the first coded signal.

33. The wireless mobile station of claim 32, wherein:

in operation, the controller causes the mobile station to transmit the first coded signal at a timing based on the synchronization data.

34. The wireless mobile station of claim 31, wherein said receiver comprises:

an analog-to-digital converter for converting the received message data from an antenna to a digital signal; and

a component responsive to the digital signal from the analog-to-digital converter for detecting transmitted data.

35. The wireless mobile station of claim 31, wherein said transmitter comprises a digital to analog converter responsive to digital signals from the formatter.

36. The wireless mobile station of claim 35, wherein:

said mobile station further comprises;

a modulator; and

a variable gain device, coupled to the formatter, for adjusting levels of output from the formatter before application thereof to the modulator.

37. The wireless mobile station of claim 31, wherein the controller causes the mobile station to cease coded signal transmission to the base station if no L1 acknowledgment corresponding to a transmitted coded signal has been received after a maximum number of repetitions.

38. The wireless mobile station of claim 31, wherein the controller causes the mobile station to further transmit additional coded signals to the base station, without any message data, at increasing separate and distinct power levels, each higher than a prior separate and distinct power level, until a maximum power level is reached.

39. The wireless mobile station of claim 31, wherein the mobile station further performs functions to:

transmit a collision detection signal to the base station after receipt of the L1 acknowledgement;

receive a base station collision detection signal from the base station, the base station collision detection signal corresponding to the transmitted collision detection signal;

transmit any of data and control information to the base station, after receipt of the base station collision detection signal; and

receive any of data and control information from the base station.

40. The wireless mobile station of claim 31, wherein the mobile station further performs functions to:

transmit a collision detection signal to the base station following receipt of the L1 acknowledgement; and

cease signal transmission to the base station after a period of time if no base station collision detection signal corresponding to the transmitted collision detection signal has been received from the base station.

41. A wireless mobile station, comprising:

a controller coupled to a receiver and to a transmitter, such that in operation the controller causes the mobile station to perform functions, including functions to;

(a) transmit the first coded signal to a base station, without any message data, at a first power level, the first coded signal including one or more codes that distinguish the first coded signal from another coded signal, the first coded signal not including message data;

(b) transmit a second coded signal to the base station, without any message data, at a second power level a step higher than the first power level, upon expiration of a predetermined interval following the end of the transmission of the first coded message at the first power level, provided that no L1 acknowledgment corresponding to the first coded signal is received at the mobile station, the second coded signal including one or more codes that distinguish the second coded signal from another coded signal, the second coded signal not including message data;

(c) cease coded signal transmission to the base station upon receiving a L1 acknowledgment corresponding to a previously transmitted coded signal; and

(d) transmit message data to the base station only after ceasing coded signal transmission, and

wherein the wireless mobile station further comprises;

an acknowledgment detector, coupled to the receiver, for detecting the L1 acknowledgment;

an encoder for encoding said message data;

a generator for generating said first coded signal and second coded signal; and

a formatter, coupled to the encoder, for formatting the encoded message data.

42. The wireless mobile station of claim 41, wherein:

in operation, the controller causes the mobile station to obtain synchronization data from the base station prior to transmitting the first coded signal.

43. The wireless mobile station of claim 42, wherein:

in operation, the controller causes the mobile station to transmit the first coded signal at a timing based on the synchronization data.

44. The wireless mobile station of claim 41, wherein said receiver comprises:

an analog-to-digital converter for converting the received message data from an antenna to a digital signal; and

a component responsive to the digital signal from the analog-to-digital converter for detecting transmitted data.

45. The wireless mobile station of claim 41, wherein said transmitter comprises a digital to analog converter responsive to digital signals from the formatter.

46. The wireless mobile station of claim 45, wherein:

said mobile station further comprises;

a modulator; and

a variable gain device, coupled to the formatter, for adjusting levels of output from the formatter before application thereof to the modulator.

47. The wireless mobile station of claim 41, wherein the controller causes the mobile station to cease coded signal transmission to the base station if no L1 acknowledgment corresponding to a transmitted coded signal has been received after a maximum number of repetitions.

48. The wireless mobile station of claim 41, wherein the controller causes the mobile station to further transmit additional coded signals to the base station, without any message data, at increasing separate and distinct power levels, each higher than a prior separate and distinct power level, until a maximum power level is reached.

49. The wireless mobile station of claim 41, wherein the mobile station further performs functions to:

transmit a collision detection signal to the base station after receipt of the L1 acknowledgement;

receive a base station collision detection signal from the base station, the base station collision detection signal corresponding to the transmitted collision detection signal;

transmit any of data and control information to the base station, after receipt of the base station collision detection signal; and

receive any of data and control information from the base station.

50. The wireless mobile station of claim 41, wherein the mobile station further performs functions to:

transmit a collision detection signal to the base station following receipt of the L1 acknowledgement; and

cease signal transmission to the base station after a period of time if no base station collision detection signal corresponding to the transmitted collision detection signal has been received from the base station.

51. A wireless mobile station, comprising:

a transmitter;

a receiver;

a controller coupled to the receiver for responding to signals received via the receiver and coupled for controlling the transmitter, such that in operation the controller causes the mobile station to perform functions, including functions to;

(a) generate a first coded signal which does not include any message data;

(b) transmit the first coded signal to a base station, at a first separate and distinct power level;

(c) transmit a second coded signal to the base station, without any message data, at a second separate and distinct power level higher than the first separate and distinct power level, upon expiration of a predetermined interval following the transmission of the first coded signal at the first separate and distinct power level, provided that no L1 acknowledgment corresponding to the first coded signal is received at the mobile station, each of the first and second coded signals comprising one or more codes that are used to distinguish the wireless mobile station from one or more other mobile stations;

(d) cease coded signal transmission to the base station upon receiving a L1 acknowledgment corresponding to a transmitted coded signal;

(e) cease coded signal transmission to the base station if no L1 acknowledgment corresponding to a transmitted coded signal has been received after a maximum number of repetitions; and

(f) transmit message data after ceasing coded signal transmission if an L1 acknowledgement has been received by the mobile station.

52. The wireless mobile station of claim 51, wherein:

in operation, the controller causes the mobile station to obtain synchronization data from the base station prior to the generating of the first coded signal.

53. The wireless mobile station of claim 52, wherein:

in operation, the controller causes the mobile station to transmit the first coded signal at a timing based on the synchronization data.

54. The wireless mobile station of claim 51, wherein said receiver comprises:

an analog-to-digital converter for converting the received message data from an antenna to a digital signal; and

a component responsive to the digital signal from the analog-to-digital converter for processing the received message data and detecting transmitted data.

55. The wireless mobile station of claim 51, wherein said transmitter comprises a digital to analog converter responsive to digital signals from the formatter.

56. The wireless mobile station of claim 55, wherein:

said mobile station further comprises;

a modulator; and

a variable gain device, coupled to the formatter, for adjusting levels of output from the formatter before application thereof to the modulator.

57. The wireless mobile station of claim 51, wherein the controller causes the mobile station to further transmit additional coded signals to the base station, without any message data, at increasing separate and distinct power levels, each higher than a prior separate and distinct power level, until a maximum power level is reached.

58. The wireless mobile station of claim 51, wherein the mobile station further performs functions to:

transmit a collision detection signal to the base station after receipt of the L1 acknowledgement;

receive a base station collision detection signal from the base station, the base station collision detection signal corresponding to the transmitted collision detection signal;

transmit any of data and control information to the base station, after receipt of the base station collision detection signal; and

receive any of data and control information from the base station.

59. The wireless mobile station of claim 51, wherein the mobile station further performs functions to:

transmit a collision detection signal to the base station following receipt of the L1 acknowledgement; and

cease signal transmission to the base station after a period of time if no base station collision detection signal corresponding to the transmitted collision detection signal has been received from the base station.

60. A wireless mobile station, comprising:

a transmitter;

a receiver;

a controller coupled to the receiver for responding to signals received via the receiver and coupled for controlling the transmitter, such that in operation the controller causes the mobile station to perform functions, including functions to;

(a) generate a first coded signal which does not include any message data;

(b) transmit the first coded signal to a base station, without any message data, at a first power level;

(c) transmit a second coded signal to the base station, without any message data, at a second power level a step higher than the first power level, upon expiration of a predetermined interval following the transmission of the first coded signal at the first power level, provided that no L1 acknowledgment corresponding to the coded signal is received at the mobile station, each of the first and second coded signals comprising one or more codes that are used to distinguish the wireless mobile station from one or more other mobile stations;

(d) cease coded signal transmission to the base station upon receiving a L1 acknowledgment corresponding to a transmitted coded signal;

(e) cease coded signal transmission to the base station if no L1 acknowledgment corresponding to a transmitted coded signal has been received after a maximum number of repetitions; and

(f) transmit message data after ceasing coded signal transmission if an L1 acknowledgement has been received by the mobile station.

61. The wireless mobile station of claim 60, wherein:

in operation, the controller causes the mobile station to obtain synchronization data from the base station prior to generating the first coded signal.

62. The wireless mobile station of claim 61, wherein:

in operation, the controller causes the mobile station to transmit the first coded signal at a timing based on the synchronization data.

63. The wireless mobile station of claim 60, wherein said receiver comprises:

an analog-to-digital converter for converting the received message data from an antenna to a digital signal; and

a component responsive to the digital signal from the analog-to-digital converter for processing the received message data and detecting transmitted data.

64. The wireless mobile station of claim 60, wherein said transmitter comprises a digital to analog converter responsive to digital signals from the formatter.

65. The wireless mobile station of claim 64, wherein:

said mobile station further comprises;

a modulator; and

a variable gain device, coupled to the formatter, for adjusting levels of output from the formatter before application thereof to the modulator.

66. The wireless mobile station of claim 60, wherein the controller causes the mobile station to further transmit additional coded signals to the base station, without any message data, at increasing separate and distinct power levels, each higher than a prior separate and distinct power level, until a maximum power level is reached.

67. The wireless mobile station of claim 60, wherein the mobile station further performs functions to:

transmit a collision detection signal to the base station after receipt of the L1 acknowledgement;

receive a base station collision detection signal from the base station, the base station collision detection signal corresponding to the transmitted collision detection signal;

transmit any of data and control information to the base station, after receipt of the base station collision detection signal; and

receive any of data and control information from the base station.

68. The wireless mobile station of claim 60, wherein the mobile station further performs functions to:

transmit a collision detection signal to the base station following receipt of the L1 acknowledgement; and

cease signal transmission to the base station after a period of time if no base station collision detection signal corresponding to the transmitted collision detection signal has been received from the base station.

69. A wireless mobile station, comprising:

a transmitter;

a receiver;

a controller coupled to the receiver for responding to signals received via the receiver and coupled for controlling the transmitter, such that in operation the controller causes the mobile station to perform functions, including functions to;

(a) generate a first coded signal which does not include any message data;

(b) transmit the first coded signal to a base station, without any message data, at a first separate and distinct power level;

(c) transmit a second coded signal to the base station, without any message data, at a second separate and distinct power level higher than the first separate and distinct power level, upon expiration of a predetermined interval following the end of the transmission of the first coded signal at the first separate and distinct power level, provided that no L1 acknowledgment corresponding to the first coded signal is received at the mobile station, each of the first and second coded signals comprising one or more codes that are used to distinguish the wireless mobile station from one or more other mobile stations;

(d) cease coded signal transmission to the base station upon receiving a L1 acknowledgment corresponding to a previously transmitted coded signal;

(e) cease coded signal transmission to the base station if no L1 acknowledgment corresponding to a transmitted coded signal has been received after a maximum number of repetitions; and

(f) transmit data to the base station after ceasing coded signal transmission if an L1 acknowledgement has been received by the mobile station.

70. The wireless mobile station of claim 69, wherein:

in operation, the controller causes the mobile station to obtain synchronization data from the base station prior to generating the first coded signal.

71. The wireless mobile station of claim 70, wherein:

in operation, the controller causes the mobile station to transmit the first coded signal at a timing based on the synchronization data.

72. The wireless mobile station of claim 69, wherein said receiver comprises:

an analog-to-digital converter for converting the received message data from an antenna to a digital signal; and

a component responsive to the digital signal from the analog-to-digital converter for processing the received message data and detecting transmitted data.

73. The wireless mobile station of claim 69, wherein said transmitter comprises a digital to analog converter responsive to digital signals from the formatter.

74. The wireless mobile station of claim 73, wherein:

said mobile station further comprises;

a modulator; and

a variable gain device, coupled to the formatter, for adjusting levels of output from the formatter before application thereof to the modulator.

75. The wireless mobile station of claim 69, wherein the controller causes the mobile station to further transmit additional coded signals to the base station, without any message data, at increasing separate and distinct power levels, each higher than a prior separate and distinct power level, until a maximum power level is reached.

76. The wireless mobile station of claim 69, wherein the mobile station further performs functions to:

transmit a collision detection signal to the base station after receipt of the L1 acknowledgement;

receive a base station collision detection signal from the base station, the base station collision detection signal corresponding to the transmitted collision detection signal;

transmit any of data and control information to the base station, after receipt of the base station collision detection signal; and

receive any of data and control information from the base station.

77. The wireless mobile station of claim 69, wherein the mobile station further performs functions to:

transmit a collision detection signal to the base station following receipt of the L1 acknowledgement; and

cease signal transmission to the base station after a period of time if no base station collision detection signal corresponding to the transmitted collision detection signal has been received from the base station.

78. A wireless mobile station, comprising:

a controller coupled to a receiver and to a transmitter, such that in operation the controller causes the mobile station to perform functions, including functions to;

(a) generate a first coded signal which does not include any message data;

(b) transmit the first coded signal to a base station, without any message data, at a first power level;

(c) transmit a second coded signal to the base station, without any message data, at a second power level a separate and distinct step higher than the first power level, upon expiration of a predetermined interval following the transmission of the first coded signal at the first power level, provided that no L1 acknowledgment corresponding to the first coded signal is received at the mobile station, each of the first and second coded signals comprising one or more codes that are used to distinguish the wireless mobile station from one or more other mobile stations;

(d) cease coded signal transmission to the base station upon receiving a L1 acknowledgment corresponding to a transmitted coded signal;

(e) cease coded signal transmission to the base station if no L1 acknowledgment corresponding to a transmitted coded signal has been received after a maximum number of repetitions; and

(f) transmit message data after ceasing coded signal transmission if an L1 acknowledgement has been received by the mobile station.

79. The wireless mobile station of claim 78, wherein:

in operation, the controller causes the mobile station to obtain synchronization data from the base station prior to generation of the first coded signal.

80. The wireless mobile station of claim 79, wherein:

in operation, the controller causes the mobile station to transmit the first coded signal at a timing based on the synchronization data.

81. The wireless mobile station of claim 78, wherein said receiver comprises:

an analog-to-digital converter for converting the received message data from an antenna to a digital signal; and

a component responsive to the digital signal from the analog-to-digital converter for detecting transmitted data.

82. The wireless mobile station of claim 78, wherein said transmitter comprises a digital to analog converter responsive to digital signals from the formatter.

83. The wireless mobile station of claim 82, wherein:

said mobile station further comprises;

a modulator; and

a variable gain device, coupled to the formatter, for adjusting levels of output from the formatter before application thereof to the modulator.

84. The wireless mobile station of claim 78, wherein the controller causes the mobile station to further transmit additional coded signals to the base station, without any message data, at increasing separate and distinct power levels, each higher than a prior separate and distinct power level, until a maximum power level is reached.

85. The wireless mobile station of claim 78, wherein the mobile station further performs functions to:

transmit a collision detection signal to the base station after receipt of the L1 acknowledgement;

receive a base station collision detection signal from the base station, the base station collision detection signal corresponding to the transmitted collision detection signal;

transmit any of data and control information to the base station, after receipt of the base station collision detection signal; and

receive any of data and control information from the base station.

86. The wireless mobile station of claim 78, wherein the mobile station further performs functions to:

transmit a collision detection signal to the base station following receipt of the L1 acknowledgement; and

cease signal transmission to the base station after a period of time if no base station collision detection signal corresponding to the transmitted collision detection signal has been received from the base station.

87. A wireless mobile station, comprising:

a controller coupled to a receiver and to a transmitter, such that in operation the controller causes the mobile station to perform functions, including functions to;

(a) transmit the first coded signal to a base station, without any message data, at a first power level, the first coded signal including one or more codes that distinguish the first coded signal from another coded signal, the first coded signal not including message data;

(b) transmit a second coded signal to the base station, without any message data, at a second power level a step higher than the first power level, upon expiration of a predetermined interval following the end of the transmission of the first coded message at the first power level, provided that no L1 acknowledgment corresponding to the first coded signal is received at the mobile station, the second coded signal including one or more codes that distinguish the second coded signal from another coded signal, the second coded signal not including message data;

(c) cease coded signal transmission to the base station upon receiving a L1 acknowledgment corresponding to a previously transmitted coded signal;

(d) cease coded signal transmission to the base station if no L1 acknowledgment corresponding to a transmitted coded signal has been received after a maximum number of repetitions; and

(e) transmit message data to the base station after ceasing coded signal transmission if an L1 acknowledgement has been received by the mobile station.

88. The wireless mobile station of claim 87, wherein:

in operation, the controller causes the mobile station to obtain synchronization data from the base station prior to transmitting the first coded signal.

89. The wireless mobile station of claim 88, wherein:

in operation, the controller causes the mobile station to transmit the first coded signal at a timing based on the synchronization data.

90. The wireless mobile station of claim 87, wherein said receiver comprises:

an analog-to-digital converter for converting the received message data from an antenna to a digital signal; and

a component responsive to the digital signal from the analog-to-digital converter for detecting transmitted data.

91. The wireless mobile station of claim 87, wherein said transmitter comprises a digital to analog converter responsive to digital signals from the formatter.

92. The wireless mobile station of claim 91, wherein:

said mobile station further comprises;

a modulator; and

a variable gain device, coupled to the formatter, for adjusting levels of output from the formatter before application thereof to the modulator.

93. The wireless mobile station of claim 87, wherein the controller causes the mobile station to further transmit additional coded signals to the base station, without any message data, at increasing separate and distinct power levels, each higher than a prior separate and distinct power level, until a maximum power level is reached.

94. The wireless mobile station of claim 87, wherein the mobile station further performs functions to:

transmit a collision detection signal to the base station after receipt of the L1 acknowledgement;

receive a base station collision detection signal from the base station, the base station collision detection signal corresponding to the transmitted collision detection signal;

transmit any of data and control information to the base station, after receipt of the base station collision detection signal; and

receive any of data and control information from the base station.

95. The wireless mobile station of claim 87, wherein the mobile station further performs functions to:

transmit a collision detection signal to the base station following receipt of the L1 acknowledgement; and

cease signal transmission to the base station after a period of time if no base station collision detection signal corresponding to the transmitted collision detection signal has been received from the base station.

96. A wireless remote station, comprising:

a transmitter;

a receiver; and

a controller coupled to the receiver for responding to signals received via the receiver and coupled for controlling the transmitter, such that in operation the remote station performs the following steps;

transmit a plurality of coded signals at sequentially increasing separate and distinct power levels to the base station, each of the plurality of coded signals not including any message data;

receive an acknowledgement signal from the base station following transmission of one or more of the coded signals;

transmit a collision detection signal to the base station after receipt of the acknowledgement signal;

receive a base station collision detection signal from the base station, the base station collision detection signal corresponding to the transmitted collision detection signal;

transmit any of data and control information to the base station, after receipt of the base station collision detection signal; and

receive any of data and control information from the base station.

97. A wireless remote station, comprising:

a transmitter;

a receiver; and

a controller coupled to the receiver for responding to signals received via the receiver and coupled for controlling the transmitter, such that in operation the remote station performs the following steps;

transmitting a plurality of coded signals at sequentially increasing separate and distinct power levels to the base station, each of the plurality of coded signals not including any message data;

receiving an acknowledgement signal from the base station following transmission of one or more of the coded signals;

transmitting a collision detection signal to the base station following receipt of the acknowledgement signal; and

ceasing signal transmission to the base station after a period of time if no base station collision detection signal corresponding to the transmitted collision detection signal has been received from the base station.