BASE TRANSCEIVER STATIONS AND METHOD OF OPERATING THEREOF

• US 20100056205A1
• Filed: 06/14/2006
• Published: 03/04/2010
• Est. Priority Date: 06/14/2006
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Fuss, Michael Johannes
• Granted Patent: US 8,229,347 B2
• Time in Patent Office: Days
• US Class Current: 455/553.100
• CPC Class Codes: H04W 88/085 Access point devices with remote components
• CPC Class Codes: H04W 88/10 adapted for operation in multiple networks, e.g. multi-mode access points

Abstract

A base transceiver station (202) for use in a wireless telecommunications system comprising at least one radio transceiver of a first type connected to an antenna of a first type (108) for providing wireless access for remote subscriber units (114) and a radio transceiver of a second type connected to an antenna of a second type (206). The radio transceivers of the first type are operably connected via cables (208), in an intermediate 10 frequency domain, to the transceiver of the second type.

Claims

1-39. -39. (canceled)

40. A base transceiver station for use in a wireless telecommunications system, the base transceiver station comprising:

one or more radio transceivers of a first type connected to one or more antennas of a first type configured to provide wireless access for remote subscriber units;

a radio transceiver of a second type connected to an antenna of a second type; and

a cable connecting the one or more radio transceivers of the first type to the transceiver of the second type in an intermediate frequency domain.

41. The base transceiver station of claim 40 further comprising a carrier combiner unit configured to combine frequency carriers used by the one or more radio transceivers of the first type into one transport channel used by the transceiver of the second type.

42. The base transceiver station of claim 41 wherein the carrier combiner unit is built into the transceiver of the second type.

43. The base transceiver station of claim 41 wherein the carrier combiner unit comprises an independent unit configured to receive input from the one or more radio transceivers of the first type, and to provide output to the transceiver of the second type.

44. The base transceiver station of claim 41 wherein the carrier combiner unit is configured to shift a frequency of the carriers used by the one or more radio transceivers of the first type with a different shift for each carrier.

45. The base transceiver station of claim 44 wherein the frequency shift for an i-th carrier is (i−

1)·

df, wherein i=1 . . . n, and n is the number of carriers to be combined, and df is a basic frequency shift.

46. The base transceiver station of claim 45 wherein df is at least a width of the carrier frequency used by the one or more radio transceivers of the first type.

47. The base transceiver station of claim 45 wherein df is less then a width of the carrier frequency used by the one or more radio transceivers of the first type.

48. The base transceiver station of claim 41 wherein the radio transceiver of the second type is configured to transmit and receive a signaling channel within a transport channel to provide information concerning point-to-point or point-to-multipoint radio power control, and carrier/noise ratio, to trigger an adaptive modulation.

49. The base transceiver station of claim 40 wherein both the first and second types of radio transceivers are configured to use separate transmission power control.

50. The base transceiver station of claim 40 wherein the radio transceiver of the second type is configured to function in a point-to-point mode.

51. The base transceiver station of claim 40 wherein the radio transceiver of the second type is configured to function as a terminal in a point-to-multipoint mode.

52. The base transceiver station of claim 40 wherein the radio transceiver of the second type is adapted to operate in a meshed type mode.

53. The base transceiver station of claim 40 wherein the one or more radio transceivers of the first type connected to the antennas of the first type are configured to operate in at least on of a Wideband Code Division Multiple Access (W-CDMA) system, a Global System for Mobile Communications (GSM) system, a General Packet Radio Service (GPRS) system, a High-Speed Circuit-Switched Data (HSCSD) system, a CDMA2000 system, an Evolution-Data Only (EV-DO) system, and a Worldwide Interoperability for Microwave Access (WiMAX) system.

54. A wireless telecommunications system comprising:

a plurality of base transceiver stations, each serving a plurality of remote subscriber units, each base transceiver station comprising;

one or more radio transceivers of a first type connected to an antenna of a first type, and configured to provide wireless access for the remote subscriber units;

a radio transceiver of a second type connected to an antenna of a second type;

a cable configured to connect the one or more radio transceivers of the first type to the transceiver of the second type in an intermediate frequency domain; and

at least one Radio Network Controller configured to control one or more of the plurality of base transceiver stations.

55. The wireless telecommunications system of claim 54 wherein each base transceiver station further comprises a carrier combiner unit configured to combine frequency carriers used by the one or more radio transceivers of the first type into one transport channel used by the transceiver of the second type.

56. The wireless telecommunications system of claim 55 wherein the carrier combiner unit is built into the transceiver of the second type.

57. The wireless telecommunications system of claim 55 wherein the carrier combiner unit comprises an independent unit configured to receive input from the one or more radio transceivers of the first type, and to provide output to the transceiver of the second type.

58. The wireless telecommunications system of claim 54 wherein the carrier combiner unit is configured to shift a frequency of the carriers used by the one or more radio transceivers of the first type with a different shift for each one of the carriers.

59. The wireless telecommunications system of claim 58 wherein the frequency shift for an i-th carrier is (i−

1)·

df, wherein i=1 . . . n, and n is the number of carriers to be combined, and df is a basic frequency shift.

60. The wireless telecommunications system of claim 59 wherein the basic frequency shift df is at least a width of the frequency carrier used by the one or more radio transceivers of the first type.

61. The wireless telecommunications system of claim 59 wherein the basic frequency shift df is less then a width of the frequency carrier used by the one or more radio transceivers of the first type.

62. The wireless telecommunications system of claim 55 wherein the radio transceiver of the second type is configured to transmit and receive a signaling channel within the transport channel to provide information concerning point-to-point or point-to-multipoint radio power control, and carrier/noise ratio, to trigger an adaptive modulation.

63. The wireless telecommunications system of claim 54 wherein both the first and second types of radio transceivers are configured to use independent transmission power control.

64. The wireless telecommunications system of claim 54 wherein the radio transceiver of the second type is configured to operate in a point-to-point mode.

65. The wireless telecommunications system of claim 54 wherein the radio transceiver of the second type is configured to operate as a terminal in a point-to-multipoint mode.

66. The wireless telecommunications system of claim 54 wherein the radio transceiver of the second type is configured to operate in a meshed type mode.

67. The wireless telecommunications system of claim 54 wherein the one or more radio transceivers of the first type connected to the antennas of the first type are configured to operate in at least on of a Wideband Code Division Multiple Access (W-CDMA) system, a Global System for Mobile Communications (GSM) system, a General Packet Radio Service (GPRS) system, a High-Speed Circuit-Switched Data (HSCSD) system, a CDMA2000 system, an Evolution-Data Only (EV-DO) system, and a Worldwide Interoperability for Microwave Access (WiMAX) system.

68. A method of operating a base transceiver station serving plurality of remote subscriber units in a wireless telecommunications system, wherein the base transceiver station comprises one or more radio transceivers of a first type connected to an antenna of a first type to provide wireless access for the remote subscriber units, and a radio transceiver of a second type connected to an antenna of a second type, the method comprising:

in the one or more radio transceivers of the first type;

down-converting radio-frequency signals to be transmitted to the radio transceiver of the second type into intermediate-frequency signals; and

up-converting intermediate frequency signals received from the radio transceiver of the second type into radio-frequency signals;

in the transceiver of the second type;

down-converting radio-frequency signals to be transmitted to the one or more transceivers of the first type into intermediate-frequency signals; and

up-converting intermediate frequency signals received from the one or more radio transceivers of the first type into radio-frequency signals; and

transmitting the radio-frequency signals and the intermediate frequency signals via one or more cables that connect the radio transceivers of the first and second types.

69. The method of claim 68 further comprising combining frequency carriers used by the one or more radio transceivers of the first type into one transport channel used by the transceiver of the second type.

70. The method of claim 69 wherein combining the frequency carriers comprises shifting a frequency of carriers used by the one or more radio transceivers of the first type with a different shift for each carrier.

71. The method of claim 70 wherein the frequency shift for an i-th carrier is (i−

1)·

df, wherein i=1 . . . n, and n is the number of carriers to be combined, and df is a basic frequency shift.

72. The method of claim 70 wherein df is at least a width of a frequency carrier used by the one or more radio transceivers of the first type.

73. The method of claim 70 wherein df is less then a width of a frequency carrier used by the one or more radio transceivers of the first type.

74. The method of claim 68 wherein the radio transceiver of the second type transmits and receives a signaling channel within the transport channel to provide information concerning point-to-point or point-to-multipoint radio power control, and carrier/noise ratio, to trigger an adaptive modulation.

75. The method of claim 68 wherein both the first and second types of radio transceivers use independent transmission power control.

76. The method of claim 68 wherein the radio transceiver of the second type operates in a point-to-point mode.

77. The method of claim 68 wherein the radio transceiver of the second type operates as a terminal in a point-to-multipoint mode.

78. The method of claim 68 wherein the radio transceiver of the second type operates in a meshed type mode.