WO2023151884A1 - Procédé d'amélioration de positionnement - Google Patents

Procédé d'amélioration de positionnement Download PDF

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Publication number
WO2023151884A1
WO2023151884A1 PCT/EP2023/050515 EP2023050515W WO2023151884A1 WO 2023151884 A1 WO2023151884 A1 WO 2023151884A1 EP 2023050515 W EP2023050515 W EP 2023050515W WO 2023151884 A1 WO2023151884 A1 WO 2023151884A1
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WIPO (PCT)
Prior art keywords
reference signal
positioning reference
signal components
terminal device
subset
Prior art date
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PCT/EP2023/050515
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English (en)
Inventor
Stepan Kucera
Joerg Schaepperle
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Nokia Technologies Oy
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Publication of WO2023151884A1 publication Critical patent/WO2023151884A1/fr

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Classifications

    • 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
    • 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
    • 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
    • G01S1/0428—Signal details
    • 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
    • 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
    • G01S5/01—Determining conditions which influence positioning, e.g. radio environment, state of motion or energy consumption
    • G01S5/011—Identifying the radio environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data

Definitions

  • the exemplary and non-limiting embodiments of the invention relate generally to wireless communication systems. Embodiments of the invention relate especially to apparatuses and methods in wireless communication networks.
  • wireless telecommunication systems have been increasing for several years. In many developed countries almost every grown-up and many children as well use a terminal device of a wireless telecommunication system. The wireless telecommunication systems are under constant development. New services are developed, and older services are enhanced.
  • Positioning services or utilising the location of terminal devices or user equipment of users are developed as well.
  • the location of a terminal device or user equipment may be utilised both in commercial services and also in emergency situations.
  • Examples of commercials services are autonomous road traffic, logistics, asset tracking applications and smart factories, to name a few.
  • Methods to increase the accuracy of positioning services with different types of terminal devices and user equipment may be beneficial.
  • an apparatus of a communication system comprising: means for receiving assistance data from a network element, the assistance data being indicative of a plurality of positioning reference signal components configured by a network node communicating with the apparatus, for a bandwidth area, plurality of positioning reference signal components associated with respective subparts of the bandwidth area; and means for measuring a subset of the plurality of positioning reference signal components, wherein number of positioning reference signal components in the subset is determined in dependence of a parameter indicative of reception power of at least one reference signal.
  • an apparatus of a communication system comprising: means for transmitting to a terminal device assistance data, the assistance data being indicative of a plurality of positioning reference signal components configured for a bandwidth area, each positioning reference signal component being associated with a subpart of the bandwidth area; and means for transmitting to the terminal device an indication of a number of positioning reference signal components in a subset of the plurality of positioning reference signal components to measure, or means for transmitting to the terminal device a position accuracy requirement to determine the number of positioning reference signal components in the subset in dependence of a parameter indicative of reception power of at least one reference signal at the terminal device.
  • a method in an apparatus of a communication system comprising: receiving assistance data from a network element, the assistance data being indicative of a plurality of positioning reference signal components configured by a network node communicating with the apparatus, for a bandwidth area, plurality of positioning reference signal components associated with respective subparts of the bandwidth area; and measuring a subset of the plurality of positioning reference signal components, wherein number of positioning reference signal components in the subset is determined in dependence of a parameter indicative of reception power of at least one reference signal.
  • the at least one reference signal comprises at least one of the positioning reference signal components.
  • the number of the positioning reference signal components is further dependent on a position accuracy requirement.
  • the parameter indicative of reception power is positioning reference signal power spectral density.
  • the method further comprises determining the number of positioning reference signal components in the subset based at least on one of position accuracy requirement or positioning reference signal power spectral density times bandwidth to the 3rd power.
  • the method further comprises receiving from the network an indication of the number of positioning reference signal components in the subset.
  • the method further comprises transmitting measurement data related to the subset of the plurality of positioning reference signal components to the network.
  • the method further comprises combining measurement data related to the subset of the plurality of positioning reference signal components to a combined wide-band positioning reference signal measurement data; and transmitting the combined measurement data to the network.
  • a method in an apparatus of a communication system comprising: transmitting to a terminal device assistance data, the assistance data being indicative of a plurality of positioning reference signal components configured for a bandwidth area, each positioning reference signal component being associated with a subpart of the bandwidth area; and transmitting to the terminal device an indication of a number of positioning reference signal components in a subset of the plurality of positioning reference signal components to measure, or transmitting to the terminal device a position accuracy requirement to determine the number of positioning reference signal components in the subset in dependence of a parameter indicative of reception power of at least one reference signal at the terminal device.
  • the at least one reference signal comprises at least one of the positioning reference signal components.
  • the method further comprises receiving from the terminal device measurement data, the data related to either the subset of the plurality of positioning reference signal components or a combined wide-band positioning reference signal. In an embodiment, the method further comprises determining the number of positioning reference signal components in the subset based at least on a parameter indicative of reception power of at least one reference signal or reference signal component at the terminal device; and transmitting the indication of the number of positioning reference signal components in the subset to the terminal device.
  • the method further comprises determining if one or more positioning reference signal components is not utilised by any terminal device; and deactivating the unused positioning reference signal components.
  • Figures 1 and 2 illustrate examples of simplified system architecture of a communication system
  • Figures 3A and 3B are flowcharts illustrating some embodiments
  • Figure 4 is a signalling chart illustrating an embodiment
  • FIGS 5A and 5B illustrate usage of subparts
  • FIGS 7, 8, 9, and 10 illustrate example of apparatuses.
  • Some embodiments of the present invention are applicable to a user terminal, a communication device, a base station, eNodeB, gNodeB, a distributed realisation of a base station, a network element of a communication system, a corresponding component, and/or to any communication system or any combination of different communication systems that support required functionality.
  • UMTS universal mobile telecommunications system
  • UTRAN wireless local area network
  • WiFi wireless local area network
  • WiMAX worldwide interoperability for microwave access
  • PCS personal communications services
  • WCDMA wideband code division multiple access
  • UWB ultra-wideband
  • sensor networks mobile ad-hoc networks
  • MANETs mobile ad-hoc networks
  • IMS Internet Protocol multimedia subsystems
  • Fig. 1 depicts examples of simplified system architectures only showing some elements and functional entities, all being logical units, whose implementation may differ from what is shown.
  • the connections shown in Fig. 1 are logical connections; the actual physical connections may be different. It is apparent to a person skilled in the art that the system typically comprises also other functions and structures than those shown in Fig. 1.
  • Fig. 1 shows a part of an exemplifying radio access network.
  • Fig. 1 shows devices 100 and 102.
  • the devices 100 and 102 are configured to be in a wireless connection on one or more communication channels with a node 104.
  • the node 104 is further connected to a core network 106.
  • the node 104 may be an access node such as (eZg)NodeB serving devices in a cell.
  • the node 104 may be a non-3GPP access node.
  • the physical link from a device to a (eZg)NodeB is called uplink or reverse link and the physical link from the (eZg)NodeB to the device is called downlink or forward link.
  • (eZg)NodeBs or their functionalities may be implemented by using any node, host, server or access point etc. entity suitable for such a usage.
  • a communications system typically comprises more than one (eZg)NodeB in which case the (eZg)NodeBs may also be configured to communicate with one another over links, wired or wireless, designed for the purpose. These links may be used for signalling purposes.
  • the (eZg)NodeB is a computing device configured to control the radio resources of communication system it is coupled to.
  • the NodeB may also be referred to as a base station, an access point or any other type of interfacing device including a relay station capable of operating in a wireless environment.
  • the (eZg)NodeB includes or is coupled to transceivers. From the transceivers of the (eZg)NodeB, a connection is provided to an antenna unit that establishes bi-directional radio links to devices.
  • the antenna unit may comprise a plurality of antennas or antenna elements.
  • the (eZg)NodeB is further connected to the core network 106 (CN or next generation core NGC). Depending on the deployed technology, the (eZg)NodeB is connected to a serving and packet data network gateway (S-GW +P-GW) or user plane function (UPF), for routing and forwarding user data packets and for providing connectivity of devices to one or more external packet data networks, and to a mobile management entity (MME) or access mobility management function (AMF), for controlling access and mobility of the devices.
  • S-GW +P-GW serving and packet data network gateway
  • UPF user plane function
  • MME mobile management entity
  • AMF access mobility management function
  • Exemplary embodiments of a device are a subscriber unit, a user device, a user equipment (UE), a user terminal, a terminal device, a mobile station, a mobile device, etc
  • the device typically refers to a mobile or static device (e.g. a portable or non-portable computing device) that includes wireless mobile communication devices operating with or without an universal subscriber identification module (USIM), including, but not limited to, the following types of devices: mobile phone, smartphone, personal digital assistant (PDA), handset, device using a wireless modem (alarm or measurement device, etc.), laptop and/or touch screen computer, tablet, game console, notebook, and multimedia device.
  • a device may also be a nearly exclusive uplink only device, of which an example is a camera or video camera loading images or video clips to a network.
  • a device may also be a device having capability to operate in Internet of Things (loT) network which is a scenario in which objects are provided with the ability to transfer data over a network without requiring human-to-human or human-to-computer interaction, e.g. to be used in smart power grids and connected vehicles.
  • the device may also utilise cloud.
  • a device may comprise a user portable device with radio parts (such as a watch, earphones or eyeglasses) and the computation is carried out in the cloud.
  • the device illustrates one type of an apparatus to which resources on the air interface are allocated and assigned, and thus any feature described herein with a device may be implemented with a corresponding apparatus, such as a relay node.
  • a relay node is a layer 3 relay (self- backhauling relay) towards the base station.
  • the device (or in some embodiments a layer 3 relay node) is configured to perform one or more of user equipment functionalities.
  • CPS cyberphysical system
  • ICT interconnected information and communications technology
  • devices sensors, actuators, processors microcontrollers, etc.
  • mobile cyber physical systems in which the physical system in question has inherent mobility, are a subcategory of cyber-physical systems. Examples of mobile physical systems include mobile robotics and electronics transported by humans or animals.
  • 5G enables using multiple input - multiple output (MIMO) antennas, many more base stations or nodes than the LTE (a so-called small cell concept), including macro sites operating in co-operation with smaller stations and employing a variety of radio technologies depending on service needs, use cases and/or spectrum available.
  • MIMO multiple input - multiple output
  • 5G mobile communications supports a wide range of use cases and related applications including video streaming, augmented reality, different ways of data sharing and various forms of machine type applications (such as (massive) machine-type communications (mMTC), including vehicular safety, different sensors and real-time control).
  • mMTC massive machine-type communications
  • 5G is expected to have multiple radio interfaces, e.g. below 6GHz or above 24 GHz, cmWave and mmWave, and also being integrable with existing legacy radio access technologies, such as the LTE. Integration with the LTE may be implemented, at least in the early phase, as a system, where macro coverage is provided by the LTE and 5G radio interface access comes from small cells by aggregation to the LTE. In other words, 5G is planned to support both inter-RAT operability (such as LTE-5G) and inter-RI operability (inter-radio interface operability, such as below 6GHz - cmWave, 6 or above 24 GHz - cmWave and mmWave).
  • inter-RAT operability such as LTE-5G
  • inter-RI operability inter-radio interface operability, such as below 6GHz - cmWave, 6 or above 24 GHz - cmWave and mmWave.
  • One of the concepts considered to be used in 5G networks is network slicing
  • the current architecture in LTE networks is fully distributed in the radio and fully centralized in the core network.
  • the low latency applications and services in 5G require to bring the content close to the radio which leads to local break out and multi-access edge computing (MEC).
  • MEC multi-access edge computing
  • 5G enables analytics and knowledge generation to occur at the source of the data. This approach requires leveraging resources that may not be continuously connected to a network such as laptops, smartphones, tablets and sensors.
  • MEC provides a distributed computing environment for application and service hosting. It also has the ability to store and process content in close proximity to cellular subscribers for faster response time.
  • Edge computing covers a wide range of technologies such as wireless sensor networks, mobile data acquisition, mobile signature analysis, cooperative distributed peer-to-peer ad hoc networking and processing also classifiable as local cloud/fog computing and grid/mesh computing, dew computing, mobile edge computing, cloudlet, distributed data storage and retrieval, autonomic self-healing networks, remote cloud services, augmented and virtual reality, data caching, Internet of Things (massive connectivity and/or latency critical), critical communications (autonomous vehicles, traffic safety, real-time analytics, time-critical control, healthcare applications).
  • the communication system is also able to communicate with other networks 112, such as a public switched telephone network, or a VoIP network, or the Internet, or a private network, or utilize services provided by them.
  • the communication network may also be able to support the usage of cloud services, for example at least part of core network operations may be carried out as a cloud service (this is depicted in Fig. 1 by “cloud” 114).
  • the communication system may also comprise a central control entity, or a like, providing facilities for networks of different operators to cooperate for example in spectrum sharing.
  • Edge cloud may be brought into a radio access network (RAN) by utilizing network function virtualization (NFV) and software defined networking (SDN).
  • RAN radio access network
  • NFV network function virtualization
  • SDN software defined networking
  • Using the technology of edge cloud may mean access node operations to be carried out, at least partly, in a server, host or node operationally coupled to a remote radio head or base station comprising radio parts. It is also possible that node operations will be distributed among a plurality of servers, nodes or hosts.
  • Application of cloudRAN architecture enables RAN real time functions being carried out at or close to a remote antenna site (in a distributed unit, DU 108) and non-real time functions being carried out in a centralized manner (in a centralized unit, CU 110).
  • 5G may also utilize satellite communication to enhance or complement the coverage of 5G service, for example by providing backhauling.
  • Possible use cases are providing service continuity for machine-to-machine (M2M) or Internet of Things (loT) devices or for passengers on board of vehicles, Mobile Broadband, (MBB) or ensuring service availability for critical communications, and future railway/maritime/aeronautical communications.
  • Satellite communication may utilise geostationary earth orbit (GEO) satellite systems, but also low earth orbit (LEO) satellite systems, in particular megaconstellations (systems in which hundreds of (nano)satellites are deployed).
  • GEO geostationary earth orbit
  • LEO low earth orbit
  • megaconstellations systems in which hundreds of (nano)satellites are deployed.
  • Each satellite in the mega-constellation may cover several satellite-enabled network entities that create on-ground cells.
  • the on-ground cells may be created through an on-ground relay node or by a gNB located on-ground or in a
  • the depicted system is only an example of a part of a radio access system and in practice, the system may comprise a plurality of (eZg)NodeBs, the device may have an access to a plurality of radio cells and the system may comprise also other apparatuses, such as physical layer relay nodes or other network elements, etc. At least one of the (eZg)NodeBs or may be a Home(eZg)nodeB. Additionally, in a geographical area of a radio communication system a plurality of different kinds of radio cells as well as a plurality of radio cells may be provided.
  • Radio cells may be macro cells (or umbrella cells) which are large cells, usually having a diameter of up to tens of kilometers, or smaller cells such as micro-, femto- or picocells.
  • the (eZg)NodeBs of Fig. 1 may provide any kind of these cells.
  • a cellular radio system may be implemented as a multilayer network including several kinds of cells. Typically, in multilayer networks, one access node provides one kind of a cell or cells, and thus a plurality of (eZg)NodeBs are required to provide such a network structure.
  • a network which is able to use “plug-and-play” (eZg)Node Bs includes, in addition to Home (eZg)NodeBs (H(eZg)nodeBs), a home node B gateway, or HNB-GW (not shown in Fig. 1 ).
  • HNB-GW HNB Gateway
  • a HNB Gateway (HNB-GW) which is typically installed within an operator’s network may aggregate traffic from a large number of HNBs back to a core network.
  • Fig.2 illustrates an example of a communication system based on 5G network components.
  • a user terminal or user equipment 200 communicating via a 5G network 202 with a data network 112.
  • the user terminal 200 is connected to a Radio Access Network RAN node, such as (eZg)NodeB 206 which provides the user terminal with a connection to the network 112 via one or more User Plane Functions, UPF 208.
  • the user terminal 200 is further connected to Core Access and Mobility Management Function, AMF 210, which is a control plane core connector for (radio) access network and can be seen from this perspective as the 5G version of Mobility Management Entity, MME, in LTE.
  • AMF 210 Core Access and Mobility Management Function
  • the 5G network further comprises Session Management Function, SMF 212, which is responsible for subscriber sessions, such as session establishment, modify and release, and a Policy Control Function, PCF 214 which is configured to govern network behavior by providing policy rules to control plane functions.
  • SMF 212 Session Management Function
  • PCF 214 Policy Control Function
  • the 5G network further comprises a Location Management Function, LMF, 216, which is responsible for managing resources and timing of positioning activities in the network.
  • LMF Location Management Function
  • Positioning of terminal devices or user equipment is seen as an important feature, which can be utilised more and more in the future. Therefore, in some communication systems some reference signals have been dedicated to increase the accuracy of positioning.
  • a positioning reference signal PRS.
  • the terminal devices may perform PRS measurements related to signal strength, angle of arrival and time stamp, for example, which can then be utilised in determining the location of the terminal device.
  • the positioning reference signal is typically transmitted as a wideband signal covering the bandwidth used by the access point.
  • RedCap reduced capability
  • Some examples of the RedCap devices are industrial wireless sensors, video surveillance cameras, and wearables (e.g., smart watches, rings, eHealth-related devices, personal protection equipment, medical monitoring devices, etc).
  • RedCap devices may have lower complexity (e.g., reduced bandwidth and number of antennas), a longer battery life, and a smaller form factor than “full capability” NR terminal device, such as enhanced mobile broadband, eMBB, and ultra-reliable low latency communication, LIRLLC, devices.
  • PRS bandwidth, BW is changed by a factor of a , where a > 1, then the PRS power spectral density, PSD, must be increased by a factor of a 3 to ensure constant positioning accuracy.
  • positioning accuracy is related to positioning reference signal power spectral density times bandwidth to the 3rd power, or
  • RedCap devices can typically process only limited reception/transmission, TX/RX, bandwidth due to the usage of cost-efficient but substantially simplified hardware.
  • the large measurement delay is would in turn lead to problems in positioning accuracy in many applications as positioning data would not keep up with a moving RedCap device, for example.
  • This positioning error caused by the measurement delay may be comparable to the required accuracy even at relatively low speeds (sub-m error for delay of 10s of ms and speeds of 1 -10 m/s).
  • the flowchart of Fig. 3A illustrates an embodiment.
  • the flowchart illustrates an example of the operation of an apparatus.
  • the apparatus may be a terminal device, user equipment, a part of a terminal device or any other apparatus capable of executing following steps.
  • the apparatus is terminal device 200 of Fig. 2.
  • the apparatus is configured to receive assistance data from a network element.
  • the assistance data is indicative of a plurality of positioning reference signal components configured by a network node communicating with the apparatus, for a bandwidth area, the plurality of positioning reference signal components associated with respective subparts of the bandwidth area.
  • each positioning reference signal component may be associated with a subpart of the bandwidth area.
  • bandwidth area is divided into three subparts (e.g. A, B, and C)
  • PRS1 may be associated with subpart A
  • PRS2 may be associated with subpart B
  • PRS3 may be associated with subpart C.
  • the apparatus may measure positioning reference signal associated with the whole bandwidth area.
  • the apparatus may measure positioning reference signal associated with a subpart of the bandwidth area.
  • the apparatus is configured to measure a subset of the plurality of positioning reference signal components in dependence of a parameter indicative of reception power of at least one reference signal at the apparatus.
  • the apparatus may be configured to measure a subset of the configured positioning reference signal components.
  • subset may refer to one or two of the three configured components (e.g. PRS1 ; PRS2; PRS3; PRS1 and PRS2; PRS1 and PRS3; or PRS2 and PRS3).
  • one positioning reference component may be excluded.
  • downselection of the configured positioning reference signals may be performed (e.g. by terminal device or by network element, such as gNB or LMF).
  • number of positioning reference signal components in the subset refers to how many positioning reference signal components are included or comprised in the subset.
  • the number of positioning reference signal components in the subset may indicate size of the subset. As said, this indicated number may be smaller than the number of configured positioning reference signal components.
  • the apparatus measures all configured positioning reference signal components. Such case may happen as the apparatus determines the number of positioning reference signal components in dependence of the parameter indicative of reception power of at least one reference signal at the apparatus. As reception power decreases, the number of positioning reference signal components may need to be increased in order to maintain required position accuracy. Hence, in some cases, in order to meet the position accuracy requirement, the apparatus may need to measure all configured positioning reference signals. Therefore, the apparatus may measure all configured PRS components (i.e. the plurality of configured PRS components) at a first location and a subset of the configured PRS components at a second location. Size of the subset may be determined as discussed herein. Following similar logic, the apparatus may determine that all configured PRS components need to be measured at the first location. For example, second location may be closer to the transmitter of the PRS components than the first location. It is noted that other variables than distance may affect the reception power of reference signal(s).
  • the apparatus may measure all configured PRS components (i.e. the plurality of configured PRS components) at a first location and
  • the number of positioning reference signal components may be decreased if a smaller number of measured positioning reference signal components suffices to meet the position accuracy requirement. Thus, if reception power increases, said number (or subset size) may decrease.
  • the at least one reference signal comprises at least one of the positioning reference signal components.
  • the reception power used in determining the subset size may be determined based on one of measured positioning reference signal components.
  • some other reference signal is utilized. If a different reference signal is used, said different reference signal may be transmitted e.g. by same entity or entities which transmit(s) the subset of positioning reference signals.
  • the parameter indicative of reception power is positioning reference signal power spectral density.
  • the apparatus is configured to select the number of positioning reference signal components based at least on one of position accuracy requirement or positioning reference signal power spectral density times bandwidth to the 3rd power. So, for example, the size of the subset may be determined based on the positioning accuracy requirement and/or Eq. 1. Hence, apparatus may determine how many positioning reference signal components it needs to measure (e.g. to fulfil position accuracy requirement).
  • the apparatus is configured to receive from the network an indication of the number of positioning reference signal components.
  • gNB or LMF may indicate the number of positioning reference signal components.
  • the apparatus may receive indication about the size of the subset.
  • apparatus may not need to determine the size of the subset by itself as it may receive the indication indicating how many positioning reference signal components it is requested to measure.
  • the apparatus may be a network element, such as a Location Management Function, LMF, a part of an LMF or any other network element capable of executing following steps, such as gNB.
  • the apparatus is configured to transmit to a terminal device assistance data.
  • the assistance data is indicative of a plurality of positioning reference signal components configured for a bandwidth area, each positioning reference signal component being associated with a subpart of the bandwidth area.
  • positioning reference signal components may be configured by the apparatus (e.g. by gNB or LMF).
  • the apparatus is configured to transmit to the terminal device one of an indication of a number of positioning reference signal components in a subset of the plurality of positioning reference signal components to measure, or transmit to the terminal device a position accuracy requirement to determine the number of positioning reference signal components in the subset in dependence of a parameter indicative of reception power of at least one reference signal at the terminal device.
  • apparatus indicates, in step 312, the number of positioning reference signal components in the subset to measure.
  • the terminal device may receive indication about the number of positioning reference signal components in the subset and measures the positioning reference signal components accordingly.
  • the apparatus may indicate the size of the subset, i.e. how many positioning reference signals terminal device is requested to measure.
  • the apparatus may determine the subset size e.g. utilizing Eq. 1 and/or position accuracy requirement.
  • the apparatus may receive the parameter indicative of reception power of the at least one reference signal from the terminal device. So, the terminal device may measure, and report said parameter and indicate it to the apparatus. This may happen prior to determining the size of the subset.
  • apparatus indicates, in step 312, the position accuracy requirement to the terminal device.
  • the terminal device may determine obtainable position accuracy using the positioning reference signal power spectral density times bandwidth to the 3rd power formula (this formula may be pre-configured to the terminal device or it may be transmitted e.g. by the apparatus from the network to the terminal device) and compare said obtainable position accuracy to the indicated position accuracy requirement in order to select correct number of positioning reference signal components to measure.
  • this formula may be pre-configured to the terminal device or it may be transmitted e.g. by the apparatus from the network to the terminal device
  • this formula may be pre-configured to the terminal device or it may be transmitted e.g. by the apparatus from the network to the terminal device
  • compare said obtainable position accuracy to the indicated position accuracy requirement in order to select correct number of positioning reference signal components to measure.
  • positioning accuracy may be increased to meet higher position accuracy requirement. If lower accuracy is sufficient, lower number of components in the subset may suffice. That is, size of the subset may be changed in order to meet position accuracy requirement.
  • bandwidth area equals to a bandwidth part, BWP. I.e. the bandwidth area equals to one BWP. In such case, the subparts have size smaller than the BWP.
  • the bandwidth area comprises two or more BWPs.
  • one subpart may equal to one BWP.
  • the subpart may be smaller or even larger than one BWP.
  • one subpart may equal to BWP or subpart of BWP.
  • the relationship between accuracy, received power and bandwidth as defined by Eq. 1 is utilised.
  • the PRS bandwidth BW measured by the terminal device may be dynamically adapted.
  • the number of PRS components measured in one positioning cycle may be adapted.
  • the procedure may be based on the PRS signal strength experienced at the terminal device. In an embodiment, it may be subject to pre-defined positioning accuracy.
  • the terminal device may be configured to measure only the minimum number of PRS components in different subparts to minimize positioning latency and power consumption. However, to ensure that the positioning accuracy remains desired, the terminal device may adaptively change the number of measured PRS components (e.g. change size of the subset). If PRS power increases by factor “a”, then the measured bandwidth may be reduced by factor “a 1/3 ”.
  • Fig. 4 illustrates an embodiment. The figure illustrates signalling between a terminal device 200, the network node 206 gNB the terminal device is connected to and network element such as a LMF 216.
  • the terminal device 200 may transmit an indication 400 to the LMF about its capability. For example, the terminal device may inform its bandwidth processing limits to the LMF.
  • the LMF based at least in part of the indication, may determine 402 that the gNB should configure its bandwidth area into multiple subparts and transmit a positioning reference signal component per subpart. In other words, one positioning reference signal component may equal to a subpart.
  • the LMF may be configured transmit 404 assistance data to the terminal device and gNB, the assistance data indicating the subparts of the bandwidth area and the plurality of positioning reference signal components for the bandwidth area, each positioning reference signal component being associated with a subpart of the bandwidth area. So, each positioning reference signal component may be associated with a different subpart of the bandwidth area so that one positioning reference signal component is associated with one subpart.
  • the gBN configures 406 multiple subparts or resource pools of the bandwidth area.
  • the gNB is configured to transmit one PRS component per subpart to enable wideband PRS measurements by the terminal device.
  • a constant power is used in the transmission.
  • the terminal device is configured to perform measurements of the PRS components and report 412 results to the network. That is, the terminal device may transmit measurement data obtained from the measurements to the network.
  • the measurement data may be understood as measurement results.
  • Measurement data may comprise raw measurement data, pre-processed measurement data, and/or it may comprise one or more metrics obtained by processing the raw measurement data.
  • the terminal device may be configured to report measurement data related the combined wide-band PRS spanning across multiple subparts.
  • the measurement data may relate the individual PRS components in each active subpart.
  • measurement data may contain the estimated time of arrival. This option is backward compatible with prior art.
  • the report may contain also data permitting carrier phase tracking to ease the LMF to perform the combining of data of individual PRS components.
  • the measurement data may comprise the received signal instead of the estimated time of arrival.
  • the terminal device may report to network PRS strength or signal to (interference and) noise ration S(I)NR. This may be combined with the measurement data report or sent as a separate report.
  • legacy Enhanced Cell ID, ECID, mechanisms may be used.
  • the LMF signals to the terminal device also the required positioning accuracy or required PSD*BW 3 from Eq. 1 .
  • the terminal device may determine these values from its past.
  • the terminal device may use accuracy or PSD*BW 3 product values observed in a previous positioning session.
  • the number of the positioning reference signal components in the subset to be measured by the terminal device is further dependent on a position accuracy requirement.
  • the number of measured positioning reference signal components in the subset may be based on positioning reference signal power spectral density times bandwidth to the 3rd power, i.e. PSD*BW 3 product of Eq. 1. For example, this may be compared with the position accuracy requirement to determine how many positioning reference signal components needs to be measured.
  • the number of measured positioning reference signal components may be based on positioning reference signal power spectral density times bandwidth to the 1 st or 2nd power, i.e. a modified product of Eq. 1 .
  • terminal device may obtain position accuracy requirement from the network. Further, for example, terminal device may determine obtainable or achievable position accuracy by multiplying measured PSD with 3 rd power of used BW (i.e. based on Eq. 1 ), where the used BW is the bandwidth used for the positioning measurement.
  • PSD can be determined by the terminal device from one or more received reference signals. These one or more reference signals may comprise one or more of the positioning reference signal components, and/or different reference signal(s) can be used.
  • terminal device may determine the number of positioning reference signal components it needs to measure so that the position accuracy meets the position accuracy requirement.
  • one positioning reference signal component may correspond to a certain part of BW.
  • used BW may correspond to the number of positioning reference signal components (e.g. size of the subset). Therefore, terminal device may determine how many positioning reference signal components it needs to measure in order to achieve the position accuracy requirement with a certain measured or estimated PSD. For example, this may be determined using Eq. 1 or some variation of Eq. 1 as discussed above. Skilled person understands that in order to determine the number of positioning reference signal components, terminal device may perform cubic root operation for position accuracy requirement divided by PSD. This may return needed BW, and thus the terminal device may determine how many positioning reference components it needs to measure so that the needed (or used) BW is measured. Thus, the number of positioning reference signal components may be determined in dependence of PSD so that the required accuracy is achieved. For example, the relation between BW (e.g. BW size) and positioning reference signal components may be provided in the assistance data (e.g. steps 300, 310), or it may be preconfigured so that one positioning reference signal component corresponds to a certain BW size.
  • the assistance data e.g. steps 300, 310
  • the network element may indicate the number of positioning reference signal components (e.g. size of the subset) directly to the terminal device.
  • terminal device does not need to perform the determination, just measure the indicated number of positioning reference components.
  • position accuracy requirement is pre-configured. That is, in some cases the network does not necessarily have to indicate the requirement if it is already configured to the terminal device.
  • terminal device may use previously used and/or configured position accuracy requirement. In these cases, for example, the terminal device may determine the subset size by itself.
  • Figs. 5A, 5B and 6 illustrate the use of subparts.
  • the bandwidth area of gNB is divided into three subparts 500, 502, 504.
  • the gNB is configured to transmit a PRS component, 506, 508, 510.
  • a subpart may be also called a subband or a resource pool.
  • the terminal device which may be a RedCap terminal device, is assumed to be able to receive only one PRS component at the time, i.e. the bandwidth of each subpart equals to the max bandwidth of the RedCap UE.
  • the terminal device For performing a wide-band PRS measurement of the whole bandwidth area, the terminal device is configured to sequentially retune its receiving bandwidth to individual subparts to measure all PRS components (i.e. all PRS components that need to be measured). The first tuning happens at 512 and the second at 514. Then, in an embodiment, the terminal device may be configured to combine measurements together into a wideband PRS measurement. To this end, the subpart overlap in the frequency domain can be exploited for phase alignment and constructive combining. So, the UE may sequentially (i.e. one after another) measure the different PRS components, e.g. all PRS components of the subset.
  • Fig. 6 illustrates an example of the signal strength of the PRS transmitted by a gNB 600 and experienced by a terminal device as it moves in the area served by the gNB.
  • the gNB has configured its bandwidth area into three subparts as in Fig. 5A.
  • the terminal device may measure all three PRS components.
  • the terminal device may measure only two signal components. Thus, the measuring bandwidth is reduced.
  • the change in measurement process may be based on the signal strength and in part also on position accuracy requirement and PSD-BW 3 product.
  • Fig. 5B illustrates this situation.
  • the terminal device measures PRS component of only subparts 500 and 502 and thus needs to perform retuning 512 only once.
  • the PRS components that are not used by terminal devices may be muted or deactivated.
  • the terminal devices may be configured to report to the network the PRS components that are measured.
  • the gNB may configure and control the bandwidth adaptation of the terminal device measurements. This may be realised by using Radio Resource Control, RRC, or Media Access Control, MAC control element activation, based on gNB’s own knowledge of the channel gain to the terminal device, for example.
  • RRC Radio Resource Control
  • MAC control element activation based on gNB’s own knowledge of the channel gain to the terminal device, for example.
  • the network can explicitly signal who controls bandwidth adaptation of the terminal device measurements, whether it is the LMF, gNB or the terminal device. This may be realised by using an explicit flag in a particular message, for example.
  • Table 1 illustrates nonlimiting exemplary values of permissible bandwidth reduction factor as function of the observed received PSD at a terminal device. The values are derived from Eq. 1
  • adaptation of transmitted PSD may be dependent on given positioning accuracy and bandwidth.
  • the positioning accuracy target and PRS bandwidth may be set to remain constant.
  • the gNB may be configured to follow Eq.1 and reduce transmitted PSD (thus reducing interference) based on the knowledge of the channel gain (i.e, received PSD by terminal device ) to each terminal device.
  • the advantage of this approach is full backward compatibility with 3GPP specifications.
  • adaptation of positioning accuracy may depend on given transmitted PSD and bandwidth.
  • the positioning accuracy target may be set as variable and transmitted PSD and PRS bandwidth are set to be constant.
  • the radial speed of the terminal device with respect to the gNB is the highest when the terminal device is closest to the gNB.
  • the improved positioning accuracy and integrity can enable the support of faster terminal devices at the same level of applicationlayer reliability (increase check-out rate in a warehouse, for example).
  • the proposed solution offers multiple benefits over prior art.
  • the suggested solution enables energy savings. Therefore, longer battery lifetime and operation with less frequent battery replacement or other asset manipulation by human operator is possible.
  • the proposed solution enables better reuse of network resources. Interference and data-plane congestion may be reduced as unused PRS components can be temporarily muted by the network or used for high- priority LIRLLC data transmissions.
  • Fig. 7 illustrates an embodiment.
  • the figure illustrates a simplified example of an apparatus applying embodiments of the invention.
  • the apparatus may be a terminal device 200, user equipment, or a part of a terminal device or user equipment.
  • the apparatus is depicted herein as an example illustrating some embodiments. It is apparent to a person skilled in the art that the apparatus may also comprise other functions and/or structures and not all described functions and structures are required. Although the apparatus has been depicted as one entity, different modules and memory may be implemented in one or more physical or logical entities.
  • the apparatus 700 of the example includes a control circuitry 700 configured to control at least part of the operation of the apparatus.
  • the apparatus may comprise a memory 702 for storing data. Furthermore, the memory may store software 704 executable by the control circuitry 800. The memory may be integrated in the control circuitry.
  • the apparatus may comprise one or more interface circuitries 706, The interface circuitries are operationally connected to the control circuitry 700.
  • An interface circuitry 706 may be a set of transceivers configured to communicate with a RAN node, such as an (eZg)NodeB of a wireless communication network.
  • the interface circuitry 706 has the capability to support multiple subscription identities.
  • the apparatus may further comprise a user interface 808.
  • the software 704 may comprise a computer program comprising program code means adapted to cause the control circuitry 700 of the apparatus to realise at least some of the embodiments described above.
  • Fig. 8 illustrates an embodiment.
  • the figure illustrates a simplified example of an apparatus or network element applying embodiments of the invention.
  • the apparatus may be an access point 206, a RAN node, such as an (e/g)NodeB or a part of an access point or a RAN node.
  • a RAN node such as an (e/g)NodeB or a part of an access point or a RAN node.
  • the apparatus is depicted herein as an example illustrating some embodiments. It is apparent to a person skilled in the art that the apparatus may also comprise other functions and/or structures and not all described functions and structures are required. Although the apparatus has been depicted as one entity, different modules and memory may be implemented in one or more physical or logical entities.
  • the apparatus 206 of the example includes a control circuitry 800 configured to control at least part of the operation of the apparatus.
  • the apparatus may comprise a memory 802 for storing data. Furthermore, the memory may store software 804 executable by the control circuitry 800. The memory may be integrated in the control circuitry.
  • the apparatus further comprises one or more interface circuitries 806, 808 configured to connect the apparatus to other devices and network elements of the radio access network.
  • An interface circuitry 806 may be a set of transceivers configured to communicate with user terminals.
  • An interface circuitry 808 may be a set of transceivers configured to communicate with other network elements such as a core network, for example the LMF.
  • the interfaces may provide wired or wireless connections.
  • the software 804 may comprise a computer program comprising program code means adapted to cause the control circuitry 800 of the apparatus to realise at least some of the embodiments described above.
  • the apparatus of Fig. 8 may be shared between two physically separate devices, forming one operational entity. Therefore, the apparatus may be seen to depict the operational entity comprising one or more physically separate devices for executing at least some of the described processes.
  • the apparatus of Fig. 8, utilizing such shared architecture may comprise a remote control unit RCU 900, such as a host computer or a server computer, operatively coupled (e.g. via a wireless or wired network) to a remote distributed unit RDU 902 located in the base station.
  • RCU 900 such as a host computer or a server computer, operatively coupled (e.g. via a wireless or wired network) to a remote distributed unit RDU 902 located in the base station.
  • at least some of the described processes may be performed by the RCU 900.
  • the execution of at least some of the described processes may be shared among the RDU 902 and the RCU 900.
  • the RCU 900 may generate a virtual network through which the RCU 900 communicates with the RDU 902.
  • virtual networking may involve a process of combining hardware and software network resources and network functionality into a single, software-based administrative entity, a virtual network.
  • Network virtualization may involve platform virtualization, often combined with resource virtualization.
  • Network virtualization may be categorized as external virtual networking which combines many networks, or parts of networks, into the server computer or the host computer (e.g. to the RCU). External network virtualization is targeted to optimized network sharing. Another category is internal virtual networking which provides network-like functionality to the software containers on a single system. Virtual networking may also be used for testing the terminal device.
  • the virtual network may provide flexible distribution of operations between the RDU and the RCU.
  • any digital signal processing task may be performed in either the RDU or the RCU and the boundary where the responsibility is shifted between the RDU and the RCU may be selected according to implementation.
  • the steps and related functions described in the above and attached figures are in no absolute chronological order, and some of the steps may be performed simultaneously or in an order differing from the given one. Other functions can also be executed between the steps or within the steps. Some of the steps can also be left out or replaced with a corresponding step.
  • Fig. 10 illustrates an embodiment.
  • the figure illustrates a simplified example of an apparatus or network element applying embodiments of the invention.
  • the apparatus may be a Location Management Function, LMF, 216, or a part of an LMF or another Core Network element.
  • the apparatus 216 of the example includes a control circuitry 1000 configured to control at least part of the operation of the apparatus.
  • the apparatus may comprise a memory 1002 for storing data. Furthermore, the memory may store software 1004 executable by the control circuitry 1000. The memory may be integrated in the control circuitry.
  • the apparatus further comprises an interface circuitry 1006 configured to connect the apparatus to other devices and network elements of the radio access network.
  • An interface circuitry 1006 may be a set of transceivers configured to communicate with other network elements such gNB,s or core network elements. The interfaces may provide wired or wireless connections.
  • the software 1004 may comprise a computer program comprising program code means adapted to cause the control circuitry 1000 of the apparatus to realise at least some of the embodiments described above.
  • the software 804 and/or software 1004 comprises program instructions that cause the performance of the apparatus.
  • least one processor for example, at least one processor; and at least one memory including program instructions, the at least one memory and program instructions configured to, with the at least one processor, cause the apparatus to perform any of the steps described herein (e.g. steps of Figure 3A or 3B).
  • the apparatuses or controllers able to perform the above-described steps may be implemented as an electronic digital computer, processing system or a circuitry which may comprise a working memory (random access memory, RAM), a central processing unit (CPU), and a system clock.
  • the CPU may comprise a set of registers, an arithmetic logic unit, and a controller.
  • the processing system, controller or the circuitry is controlled by a sequence of program instructions transferred to the CPU from the RAM.
  • the controller may contain a number of microinstructions for basic operations. The implementation of microinstructions may vary depending on the CPU design.
  • the program instructions may be coded by a programming language, which may be a high- level programming language, such as C, Java, etc., or a low-level programming language, such as a machine language, or an assembler.
  • the electronic digital computer may also have an operating system, which may provide system services to a computer program written with the program instructions.
  • circuitry refers to all of the following: (a) hardware-only circuit implementations, such as implementations in only analog and/or digital circuitry, and (b) combinations of circuits and software (and/or firmware), such as (as applicable): (i) a combination of processor(s) or (ii) portions of processor(s)/software including digital signal processor(s), software, and memory(ies) that work together to cause an apparatus to perform various functions, and (c) circuits, such as a microprocessor(s) or a portion of a microprocessor(s), that require software or firmware for operation, even if the software or firmware is not physically present.
  • circuitry applies to all uses of this term in this application.
  • circuitry would also cover an implementation of merely a processor (or multiple processors) or a portion of a processor and its (or their) accompanying software and/or firmware.
  • circuitry would also cover, for example and if applicable to the particular element, a baseband integrated circuit or applications processor integrated circuit for a mobile phone or a similar integrated circuit in a server, a cellular network device, or another network device.
  • An embodiment provides a computer program embodied on a distribution medium, comprising program instructions which, when loaded into an electronic apparatus, are configured to control the apparatus to execute at least the following: receive assistance data from a network element, the assistance data being indicative of a plurality of positioning reference signal components configured by a network node communicating with the apparatus, for a bandwidth area, plurality of positioning reference signal components associated with respective subparts of the bandwidth area; and measure a subset of the plurality of positioning reference signal components, wherein number of positioning reference signal components in the subset is determined in dependence of a parameter indicative of reception power of at least one reference signal.
  • An embodiment provides a computer program embodied on a distribution medium, comprising program instructions which, when loaded into an electronic apparatus, are configured to control the apparatus to execute at least the following: transmit to a terminal device assistance data, the assistance data being indicative of a plurality of positioning reference signal components configured for a bandwidth area, each positioning reference signal component being associated with a subpart of the bandwidth area; transmit to the terminal device an indication of a number of positioning reference signal components in a subset of the plurality of positioning reference signal components to measure, or transmit to the terminal device a position accuracy requirement to determine the number of positioning reference signal components in the subset in dependence of a parameter indicative of reception power of at least one reference signal at the terminal device.
  • the computer program may be in source code form, object code form, or in some intermediate form, and it may be stored in some sort of carrier, which may be any entity or device capable of carrying the program.
  • carrier include a record medium, computer memory, read-only memory, and a software distribution package, for example.
  • the computer program may be executed in a single electronic digital computer or it may be distributed amongst several computers.
  • the apparatus may also be implemented as one or more integrated circuits, such as application-specific integrated circuits ASIC.
  • Other hardware embodiments are also feasible, such as a circuit built of separate logic components.
  • a hybrid of these different implementations is also feasible.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Est divulguée une solution d'amélioration de positionnement. La solution consiste à recevoir (300) des données d'aide en provenance d'un élément de réseau, les données d'aide indiquant une pluralité de composantes de signal de référence de positionnement configurées par un nœud de réseau communiquant avec l'appareil, pour une zone de bande passante, la pluralité de composantes de signal de référence de positionnement étant associées à des sous-parties respectives de la zone de bande passante ; et à mesurer (302) un sous-ensemble de la pluralité de composantes de signal de référence de positionnement, le nombre de composantes de signal de référence de positionnement dans le sous-ensemble étant déterminé en fonction d'un paramètre indiquant la puissance de réception d'au moins un signal de référence.
PCT/EP2023/050515 2022-02-11 2023-01-11 Procédé d'amélioration de positionnement WO2023151884A1 (fr)

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Citations (6)

* Cited by examiner, † Cited by third party
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US20120115510A1 (en) * 2009-06-12 2012-05-10 Universite Pierre Et Marie Curie (Paris 6) Geolocation of a mobile station of a wireless telephony network
US20130170374A1 (en) * 2011-12-28 2013-07-04 Aeroscout Ltd. Methods and systems for locating devices
EP3331177A1 (fr) * 2015-07-28 2018-06-06 Sharp Kabushiki Kaisha Dispositif terminal, et procédé
US20190327706A1 (en) * 2018-04-23 2019-10-24 Qualcomm Incorporated Optimized observed time difference of arrival (otdoa) in licensed-assisted access (laa)
WO2020206021A1 (fr) * 2019-04-01 2020-10-08 Apple Inc. Mesure et procédures de positionnement nr
US11202275B1 (en) * 2020-12-28 2021-12-14 Qualcomm Incorporated Method and apparatus for power and processing savings for positioning reference signals transmitted in beams

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120115510A1 (en) * 2009-06-12 2012-05-10 Universite Pierre Et Marie Curie (Paris 6) Geolocation of a mobile station of a wireless telephony network
US20130170374A1 (en) * 2011-12-28 2013-07-04 Aeroscout Ltd. Methods and systems for locating devices
EP3331177A1 (fr) * 2015-07-28 2018-06-06 Sharp Kabushiki Kaisha Dispositif terminal, et procédé
US20190327706A1 (en) * 2018-04-23 2019-10-24 Qualcomm Incorporated Optimized observed time difference of arrival (otdoa) in licensed-assisted access (laa)
WO2020206021A1 (fr) * 2019-04-01 2020-10-08 Apple Inc. Mesure et procédures de positionnement nr
US11202275B1 (en) * 2020-12-28 2021-12-14 Qualcomm Incorporated Method and apparatus for power and processing savings for positioning reference signals transmitted in beams

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