Wireless Device, Measuring Node, Network Node, Methods Therin, Computer Program, and Computer-Readable Storage Medium

• US 20150011236A1
• Filed: 12/12/2013
• Published: 01/08/2015
• Est. Priority Date: 12/28/2012
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Kazmi, Muhammad, Baldemair, Robert, Siomina, Iana
• Granted Patent: US 9,215,686 B2
• Time in Patent Office: Days
• US Class Current: 455/456.1
• CPC Class Codes: G01S 5/0226 Transmitters
• CPC Class Codes: H04B 17/27 for locating or positioning the transmitter
• CPC Class Codes: H04B 7/0404 the mobile station comprising multiple antennas, e.g. to provide uplink diversity
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04B 7/0608 Antenna selection according to transmission parameters
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/283 Power depending on the position of the mobile
• CPC Class Codes: H04W 52/365 Power headroom reporting
• CPC Class Codes: H04W 52/367 Power values between minimum and maximum limits, e.g. dynamic range
• CPC Class Codes: H04W 64/00 Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Abstract

Embodiments herein relate to a method in a wireless device (10) for performing a positioning measurement procedure in a radio communications network, which positioning measurement procedure is performed using at least uplink transmitted signals from the wireless device (10). The wireless device (10) obtains information related to a maximum power reduction applied, or a maximum power reduction expected to be applied on uplink signals transmitted from the wireless device (10), which uplink signals are used for performing at least one positioning measurement. The wireless device (10) further takes the maximum power reduction applied, or the maximum power reduction expected to be applied into account when performing the positioning measurement procedure related to the at least one positioning measurement and/or a radio transmission procedure involving uplink radio signals transmitted by the wireless device (10) to enhance positioning measurement performance of the positioning measurement procedure.

Claims

1-56. -56. (canceled)

57. A method in a wireless device for performing a positioning measurement procedure in a radio communications network, which positioning measurement procedure is performed using at least uplink transmitted signals from the wireless device, the method comprising:

obtaining information related to a maximum power reduction applied, or a maximum power reduction expected to be applied on uplink signals transmitted from the wireless device, which uplink signals are used for performing at least one positioning measurement; and

taking the maximum power reduction applied, or the maximum power reduction expected to be applied into account when performing the positioning measurement procedure related to the at least one positioning measurement and/or a radio transmission procedure involving uplink radio signals transmitted by the wireless device to enhance positioning measurement performance of the positioning measurement procedure.

58. A method according to claim 57, wherein the obtaining comprises to receive information about a transmission configuration of signals transmitted from the wireless device, and to use the received information for obtaining the maximum power reduction or a maximum power reduction expected to be applied on uplink signals transmitted by the wireless device.

59. A method according to claim 57, wherein the performing comprises at least one of:

changing carrier frequency or frequency band used for the at least one positioning measurement procedure based on the maximum power reduction applied, or the maximum power reduction expected to be applied;

using an enhanced measurement unit at the wireless device based on the maximum power reduction applied, or the maximum power reduction expected to be applied;

selecting and/or extending time interval and/or extending measurement bandwidth for the at least one positioning measurement procedure based on the maximum power reduction applied, or the maximum power reduction expected to be applied;

selecting a radio access technology less impacted by the maximum power reduction than another radio access technology;

dropping signals or carriers based on the maximum power reduction applied, or a maximum power reduction expected to be applied;

obtaining samples more frequently when the maximum power reduction applied, or the maximum power reduction expected to be applied indicates a high maximum power reduction;

stopping to perform an uplink measurement based on the maximum power reduction applied, or the maximum power reduction expected to be applied;

informing a network node for reconfiguration of the at least one positioning procedure based on the maximum power reduction applied, or the maximum power reduction expected to be applied; and

adapting the at least one positioning measurement procedure to a certain percentage or certain number of transmissions without maximum power reduction or a same maximum power reduction.

60. A method according to claim 57, wherein the maximum power reduction applied, or the maximum power reduction expected to be applied is taken into account when:

a condition is met;

when the wireless device is preconfigured to take the maximum power reduction into account;

when receiving an explicit indication of the information from another node;

upon determining that the maximum power reduction will be used; and

/or when receiving an explicit request from a network node.

61. A method according to claim 57, further comprising

transmitting, to a network node, a capability of adapting the at least one positioning measurement procedure depending on maximum power reduction and/or information related to the maximum power reduction applied, or a maximum power reduction expected to be applied on the uplink signals.

62. A method according to claim 57, further comprises

meeting one or more pre-defined requirements associated with positioning measurements which are performed on at least uplink signals transmitted by the wireless device provided one or more condition related to maximum power reduction applied on said uplink transmitted signals is met.

63. A method in a network node for enabling positioning of a wireless device and/or configuring the wireless device and/or a measuring node for performing a positioning measurement, the method comprising

obtaining information related to a maximum power reduction applied, or a maximum power reduction expected to be applied on uplink signals transmitted by the wireless device which are used by the wireless device and/or measurement node for performing at least one positioning measurement;

and

adapting at least one positioning measurement procedure related to the at least one positioning measurement, based on the maximum power reduction applied, or the maximum power reduction expected to be applied, to enhance positioning performance, which adaptation comprises one or more of;

adapting parameters related to the at least one positioning measurement using uplink signals transmitted by the wireless device;

switching to a positioning method which does riot require a measurement on uplink signals transmitted by the wireless device; and

discarding a positioning measurement that use uplink signals transmitted by the wireless device.

64. A method according to claim 63, wherein the adapting is performed when the maximum power reduction applied, or the maximum power reduction is expected to be applied is above a threshold.

65. A method according to claim 63, further comprising:

obtaining whether a measuring node or the wireless device is capable of adapting the at least one positioning measurement procedure depending on maximum power reduction.

66. A method according to claim 63, wherein the obtaining comprises to receive information about a transmission configuration of signals transmitted from the wireless device, and to use the received information for obtaining the maximum power reduction or a maximum power reduction expected to be applied on uplink signals transmitted by the wireless device.

67. A method in a measuring node for performing a positioning measurement on at least uplink signals transmitted by a wireless device, the method comprising

obtaining information related to a maximum power reduction applied, or a maximum power reduction expected to be applied on uplink signals transmitted by the wireless device, which uplink signals are used by the measuring node for performing at least one positioning measurement;

and

adapting at least one positioning measurement procedure related to the at least one positioning measurement to enhance positioning performance, based on the maximum power reduction applied, or the maximum power reduction expected to be applied.

68. A method according to claim 67, wherein the obtaining comprises to receive information about a transmission configuration of signals transmitted from the wireless device, and to use the received information for obtaining the maximum power reduction or a maximum power reduction expected to be applied on uplink signals transmitted by the wireless device.

69. A method according to claim 67 wherein the information is obtained from a network node or the wireless device.

70. A method according to claim 67, wherein the method is performed by an autonomous decision of the measuring node, when receiving an explicit request from a network node, and/or according to a predefined rule.

71. A wireless device for performing a positioning measurement procedure in a radio communications network, which positioning measurement procedure is performed using at least uplink transmitted signals from the wireless device, comprising processing means being configured to:

obtain information related to a maximum power reduction applied, or a maximum power reduction expected to be applied on uplink signals transmitted from the wireless device, which uplink signals are used for performing at least one positioning measurement; and

to take the maximum power reduction applied, or the maximum power reduction expected to be applied into account when performing the positioning measurement procedure related to the at least one positioning measurement and/or a radio transmission procedure involving uplink radio signals transmitted by the wireless device to enhance positioning measurement performance of the positioning measurement procedure.

72. A wireless device according to claim 71, being configured to receive information about a transmission configuration of signals transmitted from the wireless device, and to use the received information for obtaining the maximum power reduction or a maximum power reduction expected to be applied on uplink signals transmitted by the wireless device.

73. A wireless device according to claim 71, wherein the processing means further being configured, when performing the positioning measurement procedure, to perform at least one of:

changing carrier frequency or frequency band used for the at least one positioning measurement procedure based on the maximum power reduction applied, or the maximum power reduction expected to be applied;

using an enhanced measurement unit at the wireless device based on the maximum power reduction applied, or the maximum power reduction expected to be applied;

selecting and/or extending time interval and/or extending measurement bandwidth for the at least one positioning measurement procedure based on the maximum power reduction applied, or the maximum power reduction expected to be applied;

selecting a radio access technology less impacted by the maximum power reduction than another radio access technology;

dropping signals or carriers based on the maximum power reduction applied, or a maximum power reduction expected to be applied;

obtaining samples more frequently when the maximum power reduction applied, or the maximum power reduction expected to be applied indicates a high maximum power reduction;

stopping to perform an uplink measurement based on the maximum power reduction applied, or the maximum power reduction expected to be applied;

informing a network node for reconfiguration of the at least one positioning procedure based on the maximum power reduction applied, or the maximum power reduction expected to be applied; and

adapting the at least one positioning measurement procedure to a certain percentage or certain number of transmissions without maximum power reduction or a same maximum power reduction.

74. A wireless device according to claim 71, being configured to

transmit to a network node, a capability of adapting the at least one positioning measurement procedure depending on maximum power reduction and/or information related to the maximum power reduction applied, or a maximum power reduction expected to be applied on the uplink signals.

75. A wireless device according to claim 71, wherein the processing means further being configured to

meet one or more pre-defined requirements associated with positioning measurements which are performed on at least uplink signals transmitted by the wireless device provided one or more condition related to maximum power reduction applied on said uplink transmitted signals is met.

76. A network node for enabling positioning of a wireless device and/or configuring the wireless device and/or a measuring node for performing a positioning measurement, comprising processing means being configured to:

obtain information related to a maximum power reduction applied, or a maximum power reduction expected to be applied on uplink signals transmitted by the wireless device which are used by the wireless device and/or measurement node fix performing at least one positioning measurement; and

adapt at least one positioning measurement procedure related to the at least one positioning measurement, based on the maximum power reduction applied, or the maximum power reduction expected to be applied, to enhance positioning performance, which adaptation comprises one or more of;

adapting parameters related to the at least one positioning measurement using uplink signals transmitted by the wireless device;

switching to a positioning method which does not require a measurement on uplink signals transmitted by the wireless device; and

discarding a positioning measurement that use uplink signals transmitted by the wireless device.

77. A network node according to claim 76, wherein the processing means is configured to adapt the at least one positioning measurement procedure when the maximum power reduction applied, or the maximum power reduction is expected to be applied is above a threshold.

78. A network node according to claim 76, wherein the processing means further being configured to obtain whether a measuring node or the wireless device is capable of adapting the at least one positioning measurement procedure depending on maximum power reduction.

79. A network node according to claim 76, wherein the processing means further being configured to store whether the measuring node or the wireless device is capable of adapting;

and/or to forward whether the wireless device is capable of adapting to the measuring node.

80. A network node according to claim 76, wherein the processing means is configured to obtain the information by receiving information about a transmission configuration of signals transmitted from the wireless device, and by using the received information for obtaining the maximum power reduction or a maximum power reduction expected to be applied on uplink signals transmitted by the wireless device.

81. A measuring node for performing a positioning measurement on at least uplink signals transmitted by a wireless device, comprising processing means being configured to:

obtain information related to a maximum power reduction applied, or a maximum power reduction expected to be applied on uplink signals transmitted by the wireless device, which uplink signals are used by the measuring node for performing at least one positioning measurement; and

to

adapt at least one positioning measurement procedure related to the at least one positioning measurement to enhance positioning performance, based on the maximum power reduction applied, or the maximum power reduction expected to be applied.

82. A measuring node according to claim 81, wherein the processing means being configured to obtain the information by receiving information about a transmission configuration. of signals transmitted from the wireless device, and by using the received information for obtaining the maximum power reduction or a maximum power reduction expected to be applied on uplink signals transmitted by the wireless device.

83. A measuring node according to claim 81, wherein the information is obtained from a network node or the wireless device.

84. A measuring node according to claim 81, wherein the processing means being configured to obtain and adapt by an autonomous decision of the measuring node, when receiving an explicit request from a network node, and/or according to a predefined rule.