Positioning reference signal design for low power tracking

Patent metadata

Field	Value
Publication number	US-2023275727-A1
Application number	US-202018005509-A
Country	US
Kind code	A1
Filing date	Aug 3, 2020
Priority date	Aug 3, 2020
Publication date	Aug 31, 2023
Grant date	—

Abstract

Embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media of PRS design for low power tracking The method comprises receiving from a second device an indication that a Sounding Reference Signal, SRS, is to be used for a positioning process of the first device unless a further indication is received; and transmitting a SRS to a third device and a fourth device, the third device being responsible for measuring a position of the first device in the positioning process. In this way, a SRS can be applied for multiple cells and the handover can be avoided or SRS resources re-configuration can be avoided even if the handover occurs at the UE. The power consumption and the positioning latency of the UE can be reduced. Meanwhile, the signalling overhead to setup RRC connection may also be reduced.

First claim

1 - 56 . (canceled)

57 . A first device comprising:
at least one processor; and at least one memory including computer program code; the at least one memory and the computer program code are configured to, with the at least one processor, cause the first device at least to:
receive from a second device an indication that a Sounding Reference Signal, SRS, is to be used for a positioning process of the first device unless a further indication is received; and
transmit the SRS to a third device, the third device being responsible for measuring a position of the first device in the positioning process.

58 . The first device of claim 57 , wherein the first device is further caused to:
determine capability information about power consumption of the first device; and transmit a capability report to the second device based on the capability information.

59 . The first device of claim 57 , wherein the first device is further caused to:
receive configuration information associated with SRS indicating a target SRS sequence associated with an index of the first device and a transmission occasion of the SRS.

60 . The first device of claim 57 , wherein the SRS is generated based on a SRS sequence associated with an index of the first device, the SRS sequence determined based on configuration information associated with SRS.

61 . The first device of claim 57 , wherein the first device is caused to transmit the SRS by:
in accordance with a determination that the first device is to be hand over from a serving cell to a target cell, generating the SRS based on configuration information associated with SRS; determining a transmission occasion of the SRS based on the configuration information; and transmitting the SRS on the transmission occasion.

62 . The first device according to claim 57 , wherein the SRS is transmitted to a fourth device and resources on which the SRS is transmitted is to be muted by the fourth device.

63 . A second device comprising:
at least one processor; and at least one memory including computer program code; the at least one memory and the computer program code are configured to, with the at least one processor, cause the second device at least to:
in accordance with a determination of a low power consumption requirement at a first device, generate an indication that a Sounding Reference Signal, SRS, is to be used for a positioning process of the first device unless a further indication is received; and
transmit the indication to the first device.

64 . The second device of claim 63 , wherein the second device is further caused to:
in response to receiving a capability report from the first device, determine the low power consumption requirement based on the capability information about the power consumption of the first device determined from the capability report.

65 . The second device of claim 63 , wherein the second device is further caused to:
generate configuration information associated with SRS indicating a target SRS sequence associated with an index of the first device and a transmission occasion of the SRS; and transmit the configuration information to the first device via a long term evolution positioning protocol signaling.

66 . The second device of claim 65 , wherein the second device is caused to generate the configuration information by:
determining a reference SRS sequence; generating the target SRS sequence for the first device based on the reference SRS sequence and the index of the first device; determining the transmission occasion of the SRS; and generating the configuration information based on the target SRS sequence and the transmission occasion.

67 . The second device of claim 63 , wherein the second device is further caused to:
obtain the configuration information from a fifth device serving the first device via a new radio positioning protocol signaling A.

68 . The second device of any of claim 65 , wherein the second device is further caused to:
generate positioning assistance information at least based on the configuration information; and transmit the positioning assistance information to a third device and a fourth device, the third device being responsible for measuring a position of the first device in the positioning process.

69 . The second device of claim 65 , wherein the second device is further caused to:
transmit the configuration information to a fifth device serving the first device via a radio positioning protocol.

70 . The second device of claim 63 , wherein the second device is further caused to:
transmit the indication to a fifth device serving the first device, a third device and a fourth device, the third device being responsible for measuring a position of the first device in the positioning process.

71 . A fourth device comprising:
at least one processor; and at least one memory including computer program code; the at least one memory and the computer program code are configured to, with the at least one processor, cause the fourth device at least to:
in response to receiving a Sounding Reference Signal, SRS, from a first device, determine resources for transmitting the SRS; and
mute the resources for transmitting the SRS.

72 . The fourth device of claim 71 , wherein the fourth device is caused to mute the resources for transmitting the SRS by:
receiving positioning assistance information from a second device, the positioning assistance information at least comprising SRS configuration used for a positioning process of the first device; determining the interference level of the SRS and the resources for transmitting the SRS based on configuration information associated with SRS; and in accordance with a determination that the interference level exceeds a threshold level, mute the resources for transmitting the SRS.

73 . A method comprising:
receiving, at a first device and from a second device an indication that a Sounding Reference Signal, SRS, is to be used for a positioning process of the first device unless a further indication is received; and transmitting a SRS to a third device, the third device being responsible for measuring a position of the first device in the positioning process.

74 . The method of claim 73 , further comprising:
determining capability information about power consumption of the first device; and transmitting a capability report to the second device based on the capability information.

75 . The method of claim 73 , further comprising:
receiving configuration information associated with SRS indicating a target SRS sequence associated with an index of the first device and a transmission occasion of the SRS.

76 . The method of claim 73 , wherein the SRS is generated based on a SRS sequence associated with an index of the first device, the SRS sequence determined based on configuration information associated with SRS.

77 . The method of claim 73 , wherein transmit the SRS comprises:
in accordance with a determination that the first device is to be hand over from a serving cell to a target cell, generating the SRS based on configuration information associated with SRS; determining a transmission occasion of the SRS based on the configuration information; and transmitting the SRS on the transmission occasion.

78 . The method of claim 73 , wherein the SRS is transmitted to a fourth device and resources on which the SRS is transmitted is to be muted by the fourth device.

Assignees

• Nokia Technologies Oy
• Nokia Shanghai Bell Co Ltd
• Nokia Solutions & Networks Oy

Inventors

• Meng Yan
• Tao Tao
• Liu Jianguo

Classifications

• H04W64/00

  Locating users or terminals {or network equipment} for network management purposes, e.g. mobility management · CPC title

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04L5/0094

  Indication of how sub-channels of the path are allocated · CPC title

• H04L5/0051 Primary

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title

• G01S5/02 Primary

  using radio waves (using satellite radio beacon systems for determining position G01S19/00) · CPC title