US20170142682A1 - Location information in communications networks - Google Patents
Location information in communications networks Download PDFInfo
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- US20170142682A1 US20170142682A1 US14/773,989 US201514773989A US2017142682A1 US 20170142682 A1 US20170142682 A1 US 20170142682A1 US 201514773989 A US201514773989 A US 201514773989A US 2017142682 A1 US2017142682 A1 US 2017142682A1
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- Prior art keywords
- positioning
- reference signal
- communications network
- positioning reference
- location information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
- H04W64/003—Locating users or terminals or network equipment for network management purposes, e.g. mobility management locating network equipment
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
- G01S1/04—Details
- G01S1/042—Transmitters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
- G01S1/08—Systems for determining direction or position line
- G01S1/20—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0205—Details
- G01S5/0236—Assistance data, e.g. base station almanac
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0284—Relative positioning
- G01S5/0289—Relative positioning of multiple transceivers, e.g. in ad hoc networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/025—Services making use of location information using location based information parameters
- H04W4/027—Services making use of location information using location based information parameters using movement velocity, acceleration information
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- H04W72/048—
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/0009—Transmission of position information to remote stations
- G01S5/0018—Transmission from mobile station to base station
- G01S5/0027—Transmission from mobile station to base station of actual mobile position, i.e. position determined on mobile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/0009—Transmission of position information to remote stations
- G01S5/0018—Transmission from mobile station to base station
- G01S5/0036—Transmission from mobile station to base station of measured values, i.e. measurement on mobile and position calculation on base station
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
Definitions
- Embodiments presented herein relate to communications networks, and particularly to methods, devices, computer programs, and a computer program product for providing location information in a communications network.
- communications networks there may be a challenge to obtain good performance and capacity for a given communications protocol, its parameters and the physical environment in which the communications network is deployed.
- one parameter in providing good performance and capacity for a given communications protocol in a communications network is beam forming. It may further be advantageous for devices in the communications network to have low energy consumption.
- control/broadcast layer can be separated from the data plane.
- control layer also denoted the system control plane (SCP)
- SCP system control plane
- the deployed network infrastructure is thus insufficient for positioning.
- the network infrastructure can be gradually established, or only deployed to support communication needs but not adhering to positioning needs.
- construction sites where the environment changes organically over time, and where the communication needs may change over time as well.
- mines where the infrastructure of the mine is changing over time, and the need for positioning is much localized to where work is currently conducted.
- a warehouse building where there may be some basic positioning needs at some locations in the building, and where there simultaneously may be some stricter positioning needs (of people and goods) near vessels operating in the building.
- GNSS Global Navigation Satellite System
- the network infrastructure may only provide benefits in terms of provisioning of assistance data to facilitate signal retrieval.
- GNSS availability may be limited in the area of consideration, and the devices to be positioned may lack the capability of retrieving GNSS signals.
- An object of embodiments herein is to provide efficient mechanisms for providing and obtaining location information in a communications network.
- a method for providing location information in a communications network is performed by a first device.
- the first device supports positioning of other devices in the communications network.
- the method comprises acquiring positioning reference signal configuration from a radio network node in the communications network.
- the method comprises acquiring location information from a local positioning entity.
- the method comprises providing the location information to at least one of a radio network node and a second device in the communications network.
- the method comprises transmitting a positioning reference signal according to the positioning reference signal configuration.
- this provides efficient provision of location information in a communications network.
- this allows some devices, such as the first device, that populate an area to act as flexible reference points, and thereby provide positioning support to other devices, such as the second device, in the area.
- the communications network can control positioning availability.
- the first device can inform the network node about their capabilities, possible also triggered once they are adequately self-positioned. Thereby, it is possible to support positioning in environments and use cases which organically grow and change over time.
- a device for providing location information in a communications network supports positioning of other devices in the communications network.
- the device comprises processing circuitry.
- the processing circuitry is configured to cause the device to perform a set of operations.
- the set of operations causes the device to acquire positioning reference signal configuration from a radio network node in the communications network.
- the set of operations causes the device to acquire location information from a local positioning entity.
- the set of operations causes the device to providing the location information to at least one of a radio network node and a second device in the communications network.
- the set of operations causes the device to transmit a positioning reference signal according to the positioning reference signal configuration.
- a computer program for providing location information in a communications network comprising computer program code which, when run on processing circuitry of a device, causes the device to perform a method according to the first aspect.
- a method for a second device to obtain positioning information in a communications network The method is performed by the second device.
- the method comprises acquiring positioning assistance information by receiving location information of a first device, the first device supporting positioning of other devices in the communications network, the location information thereby serving as said positioning assistance information for the second device.
- the method comprises receiving a positioning reference signal from the first device, the positioning reference signal being received according to positioning reference signal configuration.
- the method comprises performing at least one of a first set of operations and a second set of operations.
- the first set of operations comprises estimating characteristic properties from the received positioning reference signal.
- the first set of operations comprises reporting the estimated characteristic properties and an association thereof with the first device to a network node in the communications network.
- the second set of operations comprises determining a current position of the second device according to the received positioning assistance information.
- this provides efficient obtaining of location information in a communications network.
- a device for obtaining positioning information in a communications network comprises processing circuitry.
- the processing circuitry is configured to cause the device to perform a set of operations.
- the set of operations causes the device to acquire positioning assistance information by receiving location information of another device, the another device supporting positioning of other devices in the communications network, the location information thereby serving as said positioning assistance information for the device.
- the set of operations causes the device to receive a positioning reference signal from this another device, the positioning reference signal being received according to positioning reference signal configuration.
- the set of operations causes the device to perform at least one of a first set of operations and a second set of operations.
- the first set of operations comprises estimating characteristic properties from the received positioning reference signal.
- the first set of operations comprises reporting the estimated characteristic properties and an association thereof with the first device to a network node in the communications network.
- the second set of operations comprises determining a current position of the second device according to the received positioning assistance information.
- a computer program for obtaining positioning information in a communications network comprising computer program code which, when run on processing circuitry of a device, causes the device to perform a method according to the fourth aspect.
- a seventh aspect there is presented a computer program product comprising a computer program according to at least one of the third aspect and the sixth aspect and a computer readable means on which the computer program is stored.
- any feature of the first, second, third, fourth, fifth, sixth and seventh aspects may be applied to any other aspect, wherever appropriate.
- any advantage of the first aspect may equally apply to the second, third, fourth, fifth, sixth, and/or seventh aspect, respectively, and vice versa.
- FIG. 1 is a schematic diagram illustrating a communication network according to embodiments
- FIG. 2 a is a schematic diagram showing functional units of a first device according to an embodiment
- FIG. 2 b is a schematic diagram showing functional modules of a first device according to an embodiment
- FIG. 3 a is a schematic diagram showing functional units of a second device according to an embodiment
- FIG. 3 b is a schematic diagram showing functional modules of a second device according to an embodiment
- FIG. 4 shows one example of a computer program product comprising computer readable means according to an embodiment
- FIGS. 5, 6, 7, 8, 9 are flowcharts of methods according to embodiments.
- FIGS. 11 and 12 are signalling diagrams according to embodiments.
- FIG. 1 is a schematic diagram illustrating a communications network 100 where embodiments presented herein can be applied.
- the communications network 100 comprises radio network nodes 130 a , 130 b .
- Each radio network node 130 a , 130 b provides one or more cells 150 for a device 110 , 120 to camp on.
- the radio network nodes 130 a , 130 b are operatively connected to a core network 160 which, in turn, is operatively connected to a service network 170 .
- a device 110 , 120 camping on a cell 150 of one of the radio network nodes 130 a , 130 b may thereby be able to access content and services as provided by the service network 170 .
- the communications network too may comprise a network nodes (NN) 140 .
- the network node 140 may be provided in the core network 160 or in the service network 170 .
- the network node 140 may be configured to monitor devices 110 , 120 in an area, for example to keep track of the location of devices 110 , 120 in the area, or to keep track of devices 110 , 120 in relation to other devices 110 , 120 to avoid collisions.
- the radio network nodes 130 a , 130 b may be provided as any combination of radio access network nodes such as radio base stations, base transceiver stations, node Bs, and evolved node Bs.
- the devices 110 , 120 may be provided as a portable wireless device such as a mobile station, a mobile phone, a handset, a wireless local loop phone, a user equipment (UE), a smartphone, a laptop computer, a tablet computer, or a wireless sensor device.
- positioning may be defined as a determination of the whereabouts of a device. Positioning of a device can be estimated based on signals from infrastructure nodes and devices.
- the term location may be defined as referring to whereabouts of a piece of infrastructure.
- the first device 110 is part of the positioning infrastructure, and therefore it is relevant to consider the location of the first device no.
- the location of the first device 110 can be determined via positioning.
- the term positioning reference signal may be defined as any type of signal conveyed by infrastructure nodes and devices to support positioning. Further, the positioning reference signal may comprise an identity of the first device 110 .
- the positioning reference signal may be defined as in Long Term Evolution (LTE) release 9.
- LTE Long Term Evolution
- the term location information may be defined as the location of the first device 110 as specified in a message transmitted to either a network node or another device, such as the second device 120 .
- the location information may define a current location of the first device 100 .
- An identifier of the first device 110 can also be considered as an example of location information.
- positioning assistance information may be defined as information to a device about one or more infrastructure nodes and devices, comprising the positioning reference signal configuration and optionally the location information of the node/device.
- Embodiments disclosed herein relate to providing positioning information in a communications network too.
- a device no denoted a first device a method performed by the first device 110 , a computer program comprising code, for example in the form of a computer program product, that when run on processing circuitry of the first device, causes the first device to perform the method.
- a device 120 denoted a second device, a method performed by the second device 120 , and a computer program comprising code, for example in the form of a computer program product, that when run on processing circuitry of the second device 120 , causes the second device 120 to perform the method.
- FIG. 2 a schematically illustrates, in terms of a number of functional units, the components of a first device 110 according to an embodiment.
- Processing circuitry 210 is provided using any combination of one or more of a suitable central processing unit (CPU), multiprocessor, microcontroller, digital signal processor (DSP), application specific integrated circuit (ASIC), field programmable gate arrays (FPGA) etc., capable of executing software instructions stored in a computer program product 410 a (as in FIG. 4 ), e.g. in the form of a storage medium 230 .
- CPU central processing unit
- DSP digital signal processor
- ASIC application specific integrated circuit
- FPGA field programmable gate arrays
- the processing circuitry 210 is configured to cause the first device 110 to perform a set of operations, or steps, S 102 -S 124 . These operations, or steps, S 102 -S 124 will be disclosed below.
- the storage medium 230 may store the set of operations, and the processing circuitry 210 may be configured to retrieve the set of operations from the storage medium 230 to cause the first device 110 to perform the set of operations.
- the set of operations may be provided as a set of executable instructions.
- the storage medium 230 may also comprise persistent storage, which, for example, can be any single one or combination of magnetic memory, optical memory, solid state memory or even remotely mounted memory.
- the first device 110 may further comprise a communications interface 220 for communications with other devices and nodes 120 , 130 a , 130 b , 140 in the communications network too.
- the communications interface 220 may comprise one or more transmitters and receivers, comprising analogue and digital components and a suitable number of antennas for wireless communications.
- the processing circuitry 210 controls the general operation of the first device 110 e.g. by sending data and control signals to the communications interface 220 and the storage medium 230 , by receiving data and reports from the communications interface 220 , and by retrieving data and instructions from the storage medium 230 .
- Other components, as well as the related functionality, of the first device 110 are omitted in order not to obscure the concepts presented herein.
- FIG. 2 b schematically illustrates, in terms of a number of functional modules, the components of a first device 110 according to an embodiment.
- the first device 110 of FIG. 2 b comprises a number of functional modules; an acquire module 210 a configured to perform below steps S 102 , S 104 , S 104 a , S 114 , a provide module 210 b configured to perform below steps S 106 , S 112 , S 116 , S 120 , S 124 , and a transmit and/or receive module 210 c configured to perform below steps S 108 , S 110 , S 122 .
- each functional module 210 a - 210 e may be implemented in hardware or in software.
- one or more or all functional modules 210 a - 210 e may be implemented by the processing circuitry 210 , possibly in cooperation with functional units 220 and/or 230 o .
- the processing circuitry 210 may thus be arranged to from the storage medium 230 fetch instructions as provided by a functional module 210 a - 210 e and to execute these instructions, thereby performing any steps as will be disclosed hereinafter.
- FIG. 3 a schematically illustrates, in terms of a number of functional units, the components of a second device 120 according to an embodiment.
- Processing circuitry 310 is provided using any combination of one or more of a suitable central processing unit (CPU), multiprocessor, microcontroller, digital signal processor (DSP), application specific integrated circuit (ASIC), field programmable gate arrays (FPGA) etc., capable of executing software instructions stored in a computer program product 410 b (as in FIG. 4 ), e.g. in the form of a storage medium 303 .
- CPU central processing unit
- DSP digital signal processor
- ASIC application specific integrated circuit
- FPGA field programmable gate arrays
- the processing circuitry 310 is configured to cause the second device 120 to perform a set of operations, or steps, S 202 -S 216 . These operations, or steps, S 202 -S 216 will be disclosed below.
- the storage medium 330 may store the set of operations, and the processing circuitry 310 may be configured to retrieve the set of operations from the storage medium 330 to cause the second device 120 to perform the set of operations.
- the set of operations may be provided as a set of executable instructions.
- the storage medium 330 may also comprise persistent storage, which, for example, can be any single one or combination of magnetic memory, optical memory, solid state memory or even remotely mounted memory.
- the second device 120 may further comprise a communications interface 32 for communications with other devices and nodes 110 , 130 a , 130 b , 140 in the communications network 100 .
- the communications interface 320 may comprise one or more transmitters and receivers, comprising analogue and digital components and a suitable number of antennas for wireless communications.
- the processing circuitry 310 controls the general operation of the second device 120 e.g. by sending data and control signals to the communications interface 320 and the storage medium 330 , by receiving data and reports from the communications interface 320 , and by retrieving data and instructions from the storage medium 330 .
- Other components, as well as the related functionality, of the second device 120 are omitted in order not to obscure the concepts presented herein.
- FIG. 3 b schematically illustrates, in terms of a number of functional modules, the components of a second device 120 according to an embodiment.
- the second device 120 of FIG. 3 b comprises a number of functional modules; an acquire module 310 a configured to perform below steps S 202 , S 204 , a transmit and/or receive module 310 b configured to perform below steps S 202 a , S 206 , S 214 , S 216 , an estimate module 310 C configured to perform below step S 208 , a report module 310 d configured to perform below step S 210 , and a determine module 310 e configured to perform below step S 212 .
- each functional module 310 a - 310 e may be implemented in hardware or in software.
- one or more or all functional modules 310 a - 310 e may be implemented by the processing circuitry 310 , possibly in cooperation with functional units 320 and/or 330 .
- the processing circuitry 310 may thus be arranged to from the storage medium 330 fetch instructions as provided by a functional module 310 a - 310 e and to execute these instructions, thereby performing any steps as will be disclosed hereinafter.
- FIG. 4 shows one example of a computer program product 410 a , 410 b comprising computer readable means 430 o .
- a computer program 420 a can be stored, which computer program 420 a can cause the processing circuitry 210 and thereto operatively coupled entities and devices, such as the communications interface 220 and the storage medium 230 , to execute methods according to embodiments described herein.
- the computer program 420 a and/or computer program product 410 a may thus provide means for performing any steps of the first device 110 as herein disclosed.
- a computer program 420 b can be stored, which computer program 420 b can cause the processing circuitry 310 and thereto operatively coupled entities and devices, such as the communications interface 320 and the storage medium 330 , to execute methods according to embodiments described herein.
- the computer program 420 b and/or computer program product 410 b may thus provide means for performing any steps of the second device 120 as herein disclosed.
- the computer program product 410 a , 410 b is illustrated as an optical disc, such as a CD (compact disc) or a DVD (digital versatile disc) or a Blu-Ray disc.
- the computer program product 410 a , 410 b could also be embodied as a memory, such as a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or an electrically erasable programmable read-only memory (EEPROM) and more particularly as a non-volatile storage medium of a device in an external memory such as a USB (Universal Serial Bus) memory or a Flash memory, such as a compact Flash memory.
- RAM random access memory
- ROM read-only memory
- EPROM erasable programmable read-only memory
- EEPROM electrically erasable programmable read-only memory
- the computer program 420 a , 420 b is here schematically shown as a track on the depicted optical disk, the computer program 420 a , 420 b can be stored in any way which is suitable for the computer program product 410 a , 410 b.
- FIGS. 5 and 6 are flow charts illustrating embodiments of methods for providing location information in a communications network too as performed by the first device 110 .
- FIGS. 7 and 8 are flow charts illustrating embodiments of methods for obtaining positioning information in a communications network too as performed by the second device 120 .
- the methods are advantageously provided as computer programs 42 a , 42 b.
- FIG. 5 illustrating a method for providing location information in a communications network too as performed by the first device 110 according to an embodiment.
- the first device 110 supports positioning of other devices 120 , 130 b , 140 in the communications network 100 .
- a first device too in the communications network too is associated to the capability of provisioning of positioning reference signals.
- a second device 120 configured to monitor and measure retrieved positioning reference signals from the first device 110 may either determine position utilizing positioning assistance information from the communications network too, or to report measurements associated to the positioning reference signals to a network node, which may be a radio network node 130 a , 130 b or a network node 140 outside the radio access network part of the communications network 100 .
- the first device 110 is configured to, in a step S 102 , acquire positioning reference signal configuration from a radio network node 130 a in the communications network too. Examples of positioning reference signal configuration and how the first device 110 may communicate with the radio network node 130 a will be provided below.
- the first device 110 is configured to, in a step S 104 , acquire location information from a local positioning entity. Examples of location information and local positioning entities will be provided below.
- the first device 110 is configured to, in a step S 106 , provide the location information to a radio network node 130 b and/or a second device 120 in the communications network too. Examples how the first device 110 may communicate with the radio network node 130 b and/or the second device 120 will be provided below.
- the first device 110 is configured to, in a step S 108 , transmit a positioning reference signal according to the positioning reference signal configuration. Examples of the positioning reference signal will be provided below.
- the thus disclosed mechanism for providing location information in a communications network too takes advantage of devices, such as the first device 110 , with specific capabilities such as an ability to localize themselves, and the ability to transmit positioning reference signals, thereby facilitating positioning of other devices, such as the second device 120 , in the network.
- the first device 110 may be capable of determining its location either in absolute terms or relative to observed features.
- the positioning support capability of the first device 110 concerns its ability to obtain self-localization; since the first device 110 is considered to be part of the positioning infrastructure, its whereabouts is referred to as its location, see above.
- the first device 110 may be configured with a communications interface 220 and processing circuitry 210 capable to determine its location information by retrieving positioning reference signals from radio network nodes 130 a , 130 b , as in step S 102 , possibly supported by assistance information from a network node 140 .
- the first device 110 may be configured with a communications interface 220 and processing circuitry 210 capable to determine its location information based on ranging estimates by exchanging packets with radio network nodes 130 a , 130 b , possibly supported by assistance information from a network node 140 .
- the first device 110 may be configured with sensors such as visual and infrared cameras, radars, ultrasound sensors, and other sensors and systems aiming at determining the location information of the first device 110 , optionally in relation to identified objects and features or in relation to map information, possibly supported by assistance information from a network node 140 .
- sensors such as visual and infrared cameras, radars, ultrasound sensors, and other sensors and systems aiming at determining the location information of the first device 110 , optionally in relation to identified objects and features or in relation to map information, possibly supported by assistance information from a network node 140 .
- the local positioning entity may be a Global Navigation Satellite System (GNSS), a Global Positioning System (GPS), a Global Navigation Satellite System (GLONAS), a BeiDou Navigation Satellite System (BDS), or a Galileo supported entity.
- GNSS Global Navigation Satellite System
- GPS Global Positioning System
- GLONAS Global Navigation Satellite System
- BDS BeiDou Navigation Satellite System
- Galileo supported entity the communications interface 220 and the processing circuitry 210 should thus be configured to receive and process information transmitted by such a local positioning entity.
- the local positioning entity is the Global Positioning System
- the first device 110 may be equipped with a GPS navigation device for receiving location information from a GPS satellite, and so on.
- the first device 110 may be configured with a communications interface 220 and processing circuitry 210 capable to determine its location information by using GPS information, possibly assisted by a network node 140 . Further details of how the first device 110 should be configured to communicate with such local positioning entities is known in the art and a detailed description thereof is therefore omitted.
- the first device 110 is configured to receive positioning reference signal configuration from a radio network node 130 a in the communications network 100 .
- positioning reference signal configuration can be similar to the positioning reference signals defined for LTE, separated in a sequence and a resource mapping in 3GPP TS 36.211. This will be further described below.
- the positioning reference signal (PRS) configuration may comprise one or more of a PRS sequence configuration indicating what sequence to generate to realize the positioning signal, a PRS resource pattern configuration describing how to map a PRS sequence onto resource elements within resource blocks of the transmitted signal, a PRS time/frequency resource block configuration, determining which resource blocks that shall be used for transmission of the PRS, a PRS beam configuration characterizing the antenna weight configuration of the first device 110 for positioning reference signal transmission, a PRS general availability and restricted availability configuration, a positioning ranging request reception and response transmission configuration to enable other devices, such as the second device 120 to exchange messages with the first device 110 for ranging purposes.
- PRS positioning reference signal
- the positioning reference signal configuration may specify sequence configuration, resource pattern configuration, time/frequency resource block configuration, beam configuration for how the first device is to transmit the positioning reference signal, or any combination thereof.
- Different devices 110 , 120 may have different capabilities regarding which PRS configurations it supports. Therefore, optionally, the first device 110 and/or the second device 120 may indicate its capabilities regarding PRS configurations as part of the signaling with a network node 130 a , 130 b , 140 .
- FIG. 6 illustrating methods for providing location information in a communications network too as performed by the first device 110 according to further embodiments.
- the first device 110 a may take advantage of auxiliary information for determining the location information.
- the first device 110 a may take advantage of velocity information, such as a velocity magnitude and direction, or a velocity separated into coordinate components, available from components associated to the first device 110 .
- the velocity information includes indications of the first device 110 being in motion as well as being stationary.
- the first device no is configured to, in a step S 104 a , acquire velocity information of the first device 110 .
- the velocity information may be based on a sequence of measurements acquired from the local positioning entity.
- the first device no may then be configured to, in a step S 104 b , determine the location information based on the velocity information.
- the first device 110 may be configured to signal capabilities of positioning support to a radio network node 130 a or other network node 140 .
- Different embodiments relating thereto will now be described in turn.
- the transmission of a position reference signal in step S 108 may be accompanied by support for reception of positioning ranging request messages and transmission of positioning ranging response messages.
- One embodiment is therefore based on the first device 110 signalling capabilities of positioning support to the radio network node 130 a on demand.
- the first device no is configured to, in a step S 110 , receive, from the network node 140 , a request for positioning support capabilities of the first device 110 .
- the first device 110 is then configured to, in response thereto, in a step S 112 , provide the positioning support capabilities to the network node 140 .
- One embodiment is based on the first device no signalling capabilities of positioning support to the radio network node 130 a on connection establishment.
- the first device 110 is configured to, in a step S 114 , acquire an indication of connection establishment to the radio network node 130 a . How to establish a connection between the first device 110 and a radio network node 130 a is as such known in the art and a detailed description thereof is therefore omitted.
- the first device 110 is then configured to, in response thereto, in a step S 116 , provide positioning support capabilities of the first device 110 to the radio network node 130 a.
- the first device 110 may optionally provide such capability information to a network node 140 .
- the first device no when it has obtained updated or new location information, it may send the location information to a network node, for example as part of the capability information for positioning support sent to the network node 140 .
- One embodiment is therefore based on the first device 110 signalling capabilities of positioning support to a network node 140 once the first device 110 is adequately self-localized.
- the first device 110 is configured to, in a step S 118 , confirm that the first device is self-localized.
- the first device 110 is then configured to, in response thereto, in a step S 120 , provide positioning support capabilities of the first device 110 to the network node 140 .
- the second device 120 may transmit a positioning ranging request to the first device 110 . Therefore, according to an embodiment, the first device 110 is configured to, in a step S 122 , receive a positioning ranging request from another device in the communications network 100 . The first device 110 may then be configured to, in response thereto, in a step S 124 , provide a positioning ranging response to the another device.
- This another device may be the second device 120 . However, it may generally be any device or node in the communications network too from with the capability of transmitting such a positioning ranging request.
- the first device 110 may communicate with the network node 140 , the radio network nodes 130 a , 130 b , and the second device 120 , respectively. Different examples relating thereto will now be described in turn.
- all messages between the first device to and the network node 140 may be control plane messages or user plane positioning protocol messages.
- Examples of such protocols are LPP (the LTE Positioning Protocol), and SUPL (the Secure User Plane Location).
- all messages between the first device no and the radio network nodes 130 a , 130 b may be Radio Resource Control (RRC) protocol messages or Medium Access Control (MAC) protocol messages.
- RRC Radio Resource Control
- MAC Medium Access Control
- all messages between the first device no and the second device 120 may be sidelink protocol messages. Additionally or alternatively, once the first device no has obtained updated or new location information, it may send the location information to the second device 120 via regular broadcast or on demand (for example using sidelink protocol messages).
- the positioning reference signal may in step S 108 be transmitted via a downlink resource in a time division duplex configuration, via an uplink resource in a time division duplex configuration, via an uplink resource in a frequency division duplex configuration (one example is a sidelink resource configured for communication between devices), or via a sidelink resource in general, configured for positioning support purposes.
- FIG. 7 illustrating a method for obtaining positioning information in a communications network 100 as performed by the second device 120 according to an embodiment.
- the second device 120 is configured to, in a step S 202 , acquire positioning assistance information.
- the positioning assistance information is acquired by the second device 120 receiving location information of a first device no.
- the location information thereby serves as the positioning assistance information for the second device 120 .
- the first device no supports positioning of other devices 120 , 130 b , 140 in the communications network 100 .
- the positioning assistance information may be acquired from a network node 140 or a radio network node 130 a , 130 b in the communications network 100 or even from the first device 110 itself.
- the first device 110 is configured to, in step S 108 , transmit a positioning reference signal.
- This positioning reference signal is, at least according to the present embodiment, assumed to be received by the second device 120 .
- the second device 120 is therefore configured to, in a step S 206 , receive a positioning reference signal from the first device 110 .
- the positioning reference signal is by the second device 120 received according to positioning reference signal configuration.
- the second device 120 is further configured to perform a first set of operations S 208 , S 210 and/or a second set of operations S 212 . These sets of operations will be disclosed next.
- the second device 120 is configured to, in a step S 208 , estimate characteristic properties from the received positioning reference signal. Examples of such characteristic properties and how they may be estimated will be provided below.
- the second device 120 is further configured to, in a step S 210 , report the estimated characteristic properties and an association thereof with the first device to a network node 140 in the communications network. Examples of how the second device 120 may communicate with the network node 140 will be provided below.
- the second device 120 is configured to, in a step S 212 , determine a current position of the second device 120 .
- the current position of the second device 120 is determined according to the received positioning assistance information. Examples of how the second device 120 may determine a current position will be provided below.
- the second device 120 is further configured to perform a first set of operations S 208 , S 210 and/or a second set of operations S 212 .
- the second device 120 may be configured to select which set of operations to perform based on configuration information.
- the characteristics may relate to the identity associated to the positioning reference signal, time of arrival of the received positioning reference signal, received signal strength of the received positioning reference signal, estimated range of the received positioning reference signal, or any combination thereof.
- the positioning assistance information may comprise information about at least one infrastructure node or and device in the communications network 100 .
- the positioning assistance information may comprise the positioning reference signal configuration.
- the positioning assistance information may comprise the location information of the second device 120 .
- the positioning assistance information may comprise the beam direction associated to the positioning reference signal, optionally also the beam width.
- the model may also include a model error e k to describe the expected error in the model, for example an additive error:
- h is a measurement function representing either distance, time of arrival (TOA), time difference of arrival (TDOA), round trip time (RTT), angle of arrival (AOA), received signal strength (RSS), digital map information, or position estimates for its input arguments p and p k .
- TOA time of arrival
- TDOA time difference of arrival
- RTT round trip time
- AOA angle of arrival
- RSS received signal strength
- digital map information or position estimates for its input arguments p and p k .
- the position of the second device may be determined as the position ⁇ circumflex over (p) ⁇ that best explains the measurements, for example in the least squares sense:
- FIG. 8 illustrating methods for obtaining positioning information in a communications network 100 as performed by the second device 120 according to further embodiments.
- the second device 120 in step S 202 receives location information from the first device 100 .
- the second device 120 may additionally receive further location information from another device or node in the communications network 100 .
- the second device 120 is therefore further be configured to, in a step S 202 a , receive further location information from a network node 140 or radio network node 130 a , 130 b in the communications network too.
- the second device 120 In order for the second device 120 to be able to receive the positioning reference signal according to positioning reference signal configuration the second device 120 should be configured to access such positioning reference signal configuration.
- the positioning reference signal configuration may be stored in the storage medium 330 or be acquired from another device or node in the communications network too (prior to receiving the positioning reference signal in step S 206 ).
- the second device 120 is configured to, in a step S 204 , acquire the positioning reference signal configuration from a network node 140 or radio network node 130 a , 130 b in the communications network 100 .
- the second device 120 may request positioning ranging information from the first device 110 . Such positioning ranging information may further be processed by the second device 120 in order for the second device 120 to determine its location.
- the second device 120 is configured to, in a step S 214 , transmit a positioning ranging request to the first device 110 . It is assumed that the first device 110 receives and responds to the ranging request.
- the second device 120 is configured to, in a step S 216 , receive a positioning ranging response from the first device 110 in response to having transmitted the request in step S 214 to enable estimation of the range to the first device 110 .
- the second device 120 may communicate with the network node 140 , the radio network nodes 130 a , 130 b , and the first device no, respectively. Different examples relating thereto will now be described in turn.
- all messages between the second device 120 and the network node 140 may be control plane messages or user plane positioning protocol messages.
- Examples of such protocols are LPP, and SUPL.
- all messages between the second device 120 and the radio network nodes 130 a , 130 b may be RRC protocol messages or MAC protocol messages.
- all messages between the first device 110 and the second device 120 may be sidelink protocol messages.
- step S 300 (optional): The first device 110 signals its positioning support capability to a network node.
- One way to implement step S 300 is to perform step S 112 .
- step S 310 The network node 400 configures positioning reference signals for the first device 110 .
- One way to implement step S 310 is to perform step S 102 .
- step S 320 The first device 110 obtains location information about its own location.
- the device capability for self-localization can be provided as part of step S 300 .
- One way to implement step S 320 is to perform step S 104 .
- the determined location information may be provided to the network node.
- the first device to initially obtains its location information and provides the location information as part of the positioning support capability information in step S 300 . It may even trigger the signaling of the provision support capability message when adequate self-localization has been achieved.
- the location information is provided directly to the second device 120 as FIG. 12 . The latter has the advantage that the time obtaining the location information by the first device 110 to the time when the second device 120 receives the location information is short, thereby enabling considering mobile first devices at higher velocities compared to if the location information would be sent via a network node.
- One way to implement step S 330 is to perform step S 106 .
- step S 340 The first device no transmits a positioning reference signal according to the positioning reference signal configuration.
- One way to implement step S 340 is to perform step S 108 .
- step S 350 The first device 110 receives a positioning ranging request from the second device 120 .
- One way to implement step S 350 is to perform step S 122 .
- step S 360 The first device 110 responds to the positioning ranging request to the second device 120 .
- One way to implement step S 360 is to perform step S 124 .
- step S 400 The second device 120 obtains positioning information associated to the first device 110 . Thereby, the second device 120 is able to detect and analyze a positioning reference signal from the first device (as in step S 410 below), as well as receiving and decoding optional signaling of first device location information.
- One way to implement step S 400 is to perform step S 002 .
- step S 410 The second device 120 receives a positioning reference signal from the first device 110 .
- One way to implement step S 410 is to perform step S 206 .
- step S 420 The second device 120 initiates a transmission of a positioning ranging request to the first device 110 .
- One way to implement step S 420 is to perform step S 214 .
- step S 430 The second device 120 receives a positioning ranging response from the first device 110 , and is able to estimate the range to the first device 110 based on the time the request was transmitted, and the estimated time of arrival of the response, in consideration of the needed processing time in the first device 110 .
- One way to implement step S 430 is to perform step S 216 .
- step S 440 The second device 120 estimates characteristic properties from the received positioning reference signal.
- One way to implement step S 440 is to perform step S 208 .
- step S 450 The second device 120 reports the estimated characteristic properties and an association thereof with the first device 110 to a network node in the communications network 100 .
- One way to implement step S 450 is to perform step S 210 .
- step S 460 The second device 120 uses the received and estimated information to estimate the position of the second device 120 .
- One way to implement step S 460 is to perform step S 212 .
- the position estimate may be signaled to the network node, or to some other entity in the communications network 100 .
- Positioning reference signals defined for LTE, separated in a sequence and a resource mapping in 3GPP TS 36.211 will now be disclosed in more detail.
- the positioning signal reference sequence is based on a pseudo-random sequence defined by a length 31 Gold sequence.
- x 2 ( n+ 31) ( x 2 ( n+ 3)+ x 2 ( n+ 2)+ x 2 ( n+ 1)+ x 2 ( n ))mod 2
- the reference signal sequence r i,n s (m) is defined by
- n s is the slot number within a radio frame
- l is the OFDM symbol number within the slot
- OFDM is short for orthogonal frequency-division multiplexing.
- the pseudo-random sequence c(i) is defined in Section 7.2 of 3GPP TS 36.211.
- N CP ⁇ 1 for ⁇ ⁇ normal ⁇ ⁇ CP 0 for ⁇ ⁇ extended ⁇ ⁇ CP
- the first device 110 provides its specific capability of supporting positioning to a network node.
- the network node When/if the network node identifies the need for positioning support, it configures one of more first devices 110 .
- the first device 110 receives a positioning reference signal configuration from the network node.
- the first device no also retrieves its own location.
- the first device 110 sends the location information to either a network node or a second device, and transmits a positioning reference signal.
- a second device 120 obtains positioning assistance information related to the first device no, and receives a positioning reference signal from the first device 110 . After estimating characteristic properties of the received signal, the second device 120 selects, based on configuration, if it either shall report the estimated characteristics to a network node, or to determine its position in consideration of the received information and estimate characteristics.
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2018
- 2018-04-24 HK HK18105302.2A patent/HK1246064A1/zh unknown
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2020
- 2020-07-09 US US16/924,558 patent/US11051271B2/en active Active
-
2021
- 2021-06-22 US US17/354,321 patent/US20210314907A1/en not_active Abandoned
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Also Published As
Publication number | Publication date |
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PL3320703T3 (pl) | 2019-04-30 |
EP3320703B1 (en) | 2018-10-17 |
CN107852582A (zh) | 2018-03-27 |
JP2018528644A (ja) | 2018-09-27 |
ES2706496T3 (es) | 2019-03-29 |
AU2015401752A1 (en) | 2018-02-08 |
RU2018104464A (ru) | 2019-08-09 |
RU2018104464A3 (hu) | 2019-08-09 |
MX2018000026A (es) | 2018-03-15 |
US20210314907A1 (en) | 2021-10-07 |
BR112017028337B1 (pt) | 2023-11-28 |
HUE042098T2 (hu) | 2019-06-28 |
US11051271B2 (en) | 2021-06-29 |
RU2704618C2 (ru) | 2019-10-30 |
ZA201708473B (en) | 2020-02-26 |
WO2017007386A1 (en) | 2017-01-12 |
KR20180015216A (ko) | 2018-02-12 |
EP3320703A1 (en) | 2018-05-16 |
JP6640979B2 (ja) | 2020-02-05 |
HK1246064A1 (zh) | 2018-08-31 |
US20200344713A1 (en) | 2020-10-29 |
DK3320703T3 (en) | 2019-01-21 |
AU2015401752B2 (en) | 2019-06-20 |
PH12017502248A1 (en) | 2018-06-04 |
KR102049296B1 (ko) | 2019-11-27 |
CN107852582B (zh) | 2021-03-23 |
BR112017028337A2 (pt) | 2018-09-04 |
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