WO2022151354A1 - Mécanisme de commande de puissance d'émission assistée par réseau pour positionner un srs dans un état inactif de rrc - Google Patents

Mécanisme de commande de puissance d'émission assistée par réseau pour positionner un srs dans un état inactif de rrc Download PDF

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Publication number
WO2022151354A1
WO2022151354A1 PCT/CN2021/072167 CN2021072167W WO2022151354A1 WO 2022151354 A1 WO2022151354 A1 WO 2022151354A1 CN 2021072167 W CN2021072167 W CN 2021072167W WO 2022151354 A1 WO2022151354 A1 WO 2022151354A1
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WO
WIPO (PCT)
Prior art keywords
user equipment
power control
reference signal
rule
control parameters
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PCT/CN2021/072167
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English (en)
Inventor
Jianguo Liu
Tao Tao
Yan Meng
Original Assignee
Nokia Shanghai Bell Co., Ltd.
Nokia Solutions And Networks Oy
Nokia Technologies Oy
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Application filed by Nokia Shanghai Bell Co., Ltd., Nokia Solutions And Networks Oy, Nokia Technologies Oy filed Critical Nokia Shanghai Bell Co., Ltd.
Priority to PCT/CN2021/072167 priority Critical patent/WO2022151354A1/fr
Priority to CN202210040670.0A priority patent/CN114765847B/zh
Publication of WO2022151354A1 publication Critical patent/WO2022151354A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/247—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters where the output power of a terminal is based on a path parameter sent by another terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
    • H04W52/283—Power depending on the position of the mobile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot channels

Definitions

  • the examples and non-limiting embodiments relate generally to communications and, more particularly, to a network-assisted transmit power control mechanism for positioning SRS in RRC inactive state.
  • UE user equipment
  • a method includes collecting information from a user equipment or at least one network node related to a configuration of positioning assistance information for the user equipment; determining a rule for one or more transmit power control parameters of the user equipment for a positioning reference signal in a radio resource control inactive state, based on the collected information; and signaling the rule and the one or more transmit power control parameters either to the user equipment, or to the at least one network node; wherein the one or more transmit power control parameters are configured to be used for a transmission of a positioning reference signal in a radio resource control inactive state, based on the rule.
  • a method includes providing capability information to a location management function related to a configuration of positioning assistance information for a user equipment; receiving a rule related to one or more transmit power control parameters of the user equipment for a positioning reference signal in a radio resource control inactive state, based on the provided capability information; wherein the rule is received from the location management function, or from at least one network node; and determining the one or more transmit power control parameters for a transmission of the positioning reference signal in a radio resource control inactive state, based on the rule.
  • a method includes providing information to a location management function related to a configuration of positioning assistance information for a user equipment; receiving a signal related to a rule and one or more transmit power control parameters, based on the provided information; and transmitting the rule and the one or more transmit power control parameters to the user equipment; wherein the one or more transmit power control parameters are configured to be used for a transmission of a positioning reference signal in a radio resource control inactive state, based on the rule.
  • an apparatus includes at least one processor; and at least one non-transitory memory including computer program code; wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to: collect information from a user equipment or at least one network node related to a configuration of positioning assistance information for the user equipment; determine a rule for one or more transmit power control parameters of the user equipment for a positioning reference signal in a radio resource control inactive state, based on the collected information; and signal the rule and the one or more transmit power control parameters either to the user equipment, or to the at least one network node; wherein the one or more transmit power control parameters are configured to be used for a transmission of a positioning reference signal in a radio resource control inactive state, based on the rule.
  • an apparatus includes at least one processor; and at least one non-transitory memory including computer program code; wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to: provide capability information to a location management function related to a configuration of positioning assistance information for a user equipment; receive a rule related to one or more transmit power control parameters of the user equipment for a positioning reference signal in a radio resource control inactive state, based on the provided capability information; wherein the rule is received from the location management function, or from at least one network node; and determine the one or more transmit power control parameters for a transmission of the positioning reference signal in a radio resource control inactive state, based on the rule.
  • an apparatus includes at least one processor; and at least one non-transitory memory including computer program code; wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to: provide information to a location management function related to a configuration of positioning assistance information for a user equipment; receive a signal related to a rule and one or more transmit power control parameters, based on the provided information; and transmit the rule and the one or more transmit power control parameters to the user equipment; wherein the one or more transmit power control parameters are configured to be used for a transmission of a positioning reference signal in a radio resource control inactive state, based on the rule.
  • an apparatus includes means for collecting information from a user equipment or at least one network node related to a configuration of positioning assistance information for the user equipment; means for determining a rule for one or more transmit power control parameters of the user equipment for a positioning reference signal in a radio resource control inactive state, based on the collected information; and means for signaling the rule and the one or more transmit power control parameters either to the user equipment, or to the at least one network node; wherein the one or more transmit power control parameters are configured to be used for a transmission of a positioning reference signal in a radio resource control inactive state, based on the rule.
  • an apparatus includes means for providing capability information to a location management function related to a configuration of positioning assistance information for a user equipment; means for receiving a rule related to one or more transmit power control parameters of the user equipment for a positioning reference signal in a radio resource control inactive state, based on the provided capability information; wherein the rule is received from the location management function, or from at least one network node; and means for determining the one or more transmit power control parameters for a transmission of the positioning reference signal in a radio resource control inactive state, based on the rule.
  • an apparatus includes means for providing information to a location management function related to a configuration of positioning assistance information for a user equipment; means for receiving a signal related to a rule and one or more transmit power control parameters, based on the provided information; and means for transmitting the rule and the one or more transmit power control parameters to the user equipment; wherein the one or more transmit power control parameters are configured to be used for a transmission of a positioning reference signal in a radio resource control inactive state, based on the rule.
  • a non-transitory program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine for performing operations, the operations comprising: collecting information from a user equipment or at least one network node related to a configuration of positioning assistance information for the user equipment; determining a rule for one or more transmit power control parameters of the user equipment for a positioning reference signal in a radio resource control inactive state, based on the collected information; and signaling the rule and the one or more transmit power control parameters either to the user equipment, or to the at least one network node; wherein the one or more transmit power control parameters are configured to be used for a transmission of a positioning reference signal in a radio resource control inactive state, based on the rule.
  • a non-transitory program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine for performing operations, the operations comprising: providing capability information to a location management function related to a configuration of positioning assistance information for a user equipment; receiving a rule related to one or more transmit power control parameters of the user equipment for a positioning reference signal in a radio resource control inactive state, based on the provided capability information; wherein the rule is received from the location management function, or from at least one network node; and determining the one or more transmit power control parameters for a transmission of the positioning reference signal in a radio resource control inactive state, based on the rule.
  • a non-transitory program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine for performing operations, the operations comprising: providing information to a location management function related to a configuration of positioning assistance information for a user equipment; receiving a signal related to a rule and one or more transmit power control parameters, based on the provided information; and transmitting the rule and the one or more transmit power control parameters to the user equipment; wherein the one or more transmit power control parameters are configured to be used for a transmission of a positioning reference signal in a radio resource control inactive state, based on the rule.
  • FIG. 1 is a block diagram of one possible and non-limiting system in which the example embodiments may be practiced.
  • FIG. 2 illustrates the impact of UE mobility on uplink power control of positioning SRS at FR1.
  • FIG. 3 is an example flowchart for network-assisted transmit power control for positioning SRS in RRC inactive state, based on the examples described herein.
  • FIG. 4 is an apparatus configured to implement a network-assisted transmit power control mechanism for positioning SRS in RRC inactive state, based on the examples described herein.
  • FIG. 5 shows a method to implement a network-assisted transmit power control mechanism for positioning SRS in RRC inactive state, based on the examples described herein.
  • FIG. 6 shows another method to implement a network-assisted transmit power control mechanism for positioning SRS in RRC inactive state, based on the examples described herein.
  • FIG. 7 shows another method to implement a network-assisted transmit power control mechanism for positioning SRS in RRC inactive state, based on the examples described herein.
  • eNB evolved Node B e.g., an LTE base station
  • en-gNB node providing NR user plane and control plane
  • gNB base station for 5G/NR i.e., a node providing
  • TPC transmit power control
  • UE user equipment e.g., a wireless, typically
  • FIG. 1 shows a block diagram of one possible and non-limiting example in which the examples may be practiced.
  • a user equipment (UE) 110 radio access network (RAN) node 170, and network element (s) 190 are illustrated.
  • the user equipment (UE) 110 is in wireless communication with a wireless network 100.
  • a UE is a wireless device that can access the wireless network 100.
  • the UE 110 includes one or more processors 120, one or more memories 125, and one or more transceivers 130 interconnected through one or more buses 127.
  • Each of the one or more transceivers 130 includes a receiver, Rx, 132 and a transmitter, Tx, 133.
  • the one or more buses 127 may be address, data, or control buses, and may include any interconnection mechanism, such as a series of lines on a motherboard or integrated circuit, fiber optics or other optical communication equipment, and the like.
  • the one or more transceivers 130 are connected to one or more antennas 128.
  • the one or more memories 125 include computer program code 123.
  • the UE 110 includes a module 140, comprising one of or both parts 140-1 and/or 140-2, which may be implemented in a number of ways.
  • the module 140 may be implemented in hardware as module 140-1, such as being implemented as part of the one or more processors 120.
  • the module 140-1 may be implemented also as an integrated circuit or through other hardware such as a programmable gate array.
  • the module 140 may be implemented as module 140-2, which is implemented as computer program code 123 and is executed by the one or more processors 120.
  • the one or more memories 125 and the computer program code 123 may be configured to, with the one or more processors 120, cause the user equipment 110 to perform one or more of the operations as described herein.
  • the UE 110 communicates with RAN node 170 via a wireless link 111.
  • the modules 140-1 and 140-2 may be configured to implement the functionality of the UE as described herein.
  • the RAN node 170 in this example is a base station that provides access by wireless devices such as the UE 110 to the wireless network 100.
  • the RAN node 170 may be, for example, a base station for 5G, also called New Radio (NR) .
  • the RAN node 170 may be a NG-RAN node, which is defined as either a gNB or an ng-eNB.
  • a gNB is a node providing NR user plane and control plane protocol terminations towards the UE, and connected via the NG interface to a 5GC (such as, for example, the network element (s) 190) .
  • the ng-eNB is a node providing E-UTRA user plane and control plane protocol terminations towards the UE, and connected via the NG interface to the 5GC.
  • the NG-RAN node may include multiple gNBs, which may also include a central unit (CU) (gNB-CU) 196 and distributed unit (s) (DUs) (gNB-DUs) , of which DU 195 is shown.
  • CU central unit
  • DUs distributed unit
  • DU 195 may include or be coupled to and control a radio unit (RU) .
  • the gNB-CU 196 is a logical node hosting radio resource control (RRC) , SDAP and PDCP protocols of the gNB or RRC and PDCP protocols of the en-gNB that controls the operation of one or more gNB-DUs.
  • RRC radio resource control
  • the gNB-CU 196 terminates the F1 interface connected with the gNB-DU 195.
  • the F1 interface is illustrated as reference 198, although reference 198 also illustrates a link between remote elements of the RAN node 170 and centralized elements of the RAN node 170, such as between the gNB-CU 196 and the gNB-DU 195.
  • the gNB-DU 195 is a logical node hosting RLC, MAC and PHY layers of the gNB or en-gNB, and its operation is partly controlled by gNB-CU 196.
  • One gNB-CU 196 supports one or multiple cells.
  • One cell is supported by only one gNB-DU 195.
  • the gNB-DU 195 terminates the F1 interface 198 connected with the gNB-CU 196.
  • the DU 195 is considered to include the transceiver 160, e.g., as part of a RU, but some examples of this may have the transceiver 160 as part of a separate RU, e.g., under control of and connected to the DU 195.
  • the RAN node 170 may also be an eNB (evolved NodeB) base station, for LTE (long term evolution) , or any other suitable base station or node.
  • eNB evolved NodeB
  • the RAN node 170 includes one or more processors 152, one or more memories 155, one or more network interfaces (N/W I/F (s) ) 161, and one or more transceivers 160 interconnected through one or more buses 157.
  • Each of the one or more transceivers 160 includes a receiver, Rx, 162 and a transmitter, Tx, 163.
  • the one or more transceivers 160 are connected to one or more antennas 158.
  • the one or more memories 155 include computer program code 153.
  • the CU 196 may include the processor (s) 152, memory (ies) 155, and network interfaces 161. Note that the DU 195 may also contain its own memory/memories and processor (s) , and/or other hardware, but these are not shown.
  • the RAN node 170 includes a module 150, comprising one of or both parts 150-1 and/or 150-2, which may be implemented in a number of ways.
  • the module 150 may be implemented in hardware as module 150-1, such as being implemented as part of the one or more processors 152.
  • the module 150-1 may be implemented also as an integrated circuit or through other hardware such as a programmable gate array.
  • the module 150 may be implemented as module 150-2, which is implemented as computer program code 153 and is executed by the one or more processors 152.
  • the one or more memories 155 and the computer program code 153 are configured to, with the one or more processors 152, cause the RAN node 170 to perform one or more of the operations as described herein.
  • the functionality of the module 150 may be distributed, such as being distributed between the DU 195 and the CU 196, or be implemented solely in the DU 195.
  • the modules 150-1 and 150-2 may be configured to implement the functionality of the base station described herein.
  • Such functionality of the base station may include a location management function (LMF) implemented based on functionality of the LMF described herein.
  • LMF may also be implemented within the RAN node 170 as a location management component (LMC) .
  • the one or more network interfaces 161 communicate over a network such as via the links 176 and 131.
  • Two or more gNBs 170 may communicate using, e.g., link 176.
  • the link 176 may be wired or wireless or both and may implement, for example, an Xn interface for 5G, an X2 interface for LTE, or other suitable interface for other standards.
  • the one or more buses 157 may be address, data, or control buses, and may include any interconnection mechanism, such as a series of lines on a motherboard or integrated circuit, fiber optics or other optical communication equipment, wireless channels, and the like.
  • the one or more transceivers 160 may be implemented as a remote radio head (RRH) 195 for LTE or a distributed unit (DU) 195 for gNB implementation for 5G, with the other elements of the RAN node 170 possibly being physically in a different location from the RRH/DU 195, and the one or more buses 157 could be implemented in part as, for example, fiber optic cable or other suitable network connection to connect the other elements (e.g., a central unit (CU) , gNB-CU 196) of the RAN node 170 to the RRH/DU 195.
  • Reference 198 also indicates those suitable network link (s) .
  • each cell performs functions, but it should be clear that equipment which forms the cell may perform the functions.
  • the cell makes up part of a base station. That is, there can be multiple cells per base station. For example, there could be three cells for a single carrier frequency and associated bandwidth, each cell covering one-third of a 360 degree area so that the single base station’s coverage area covers an approximate oval or circle.
  • each cell can correspond to a single carrier and a base station may use multiple carriers. So if there are three 120 degree cells per carrier and two carriers, then the base station has a total of 6 cells.
  • the wireless network 100 may include a network element or elements 190 that may include core network functionality, and which provides connectivity via a link or links 181 with a further network, such as a telephone network and/or a data communications network (e.g., the Internet) .
  • a further network such as a telephone network and/or a data communications network (e.g., the Internet) .
  • Such core network functionality for 5G may include location management functions (LMF (s) ) and/or access and mobility management function (s) (AMF (S) ) and/or user plane functions (UPF (s) ) and/or session management function (s) (SMF (s) ) .
  • LMF location management functions
  • AMF access and mobility management function
  • UPF user plane functions
  • SGW Session management function
  • SGW Session Management Function
  • the RAN node 170 is coupled via a link 131 to the network element 190.
  • the link 131 may be implemented as, e.g., an NG interface for 5G, or an S1 interface for LTE, or other suitable interface for other standards.
  • the network element 190 includes one or more processors 175, one or more memories 171, and one or more network interfaces (N/W I/F (s) ) 180, interconnected through one or more buses 185.
  • the one or more memories 171 include computer program code 173.
  • the one or more memories 171 and the computer program code 173 are configured to, with the one or more processors 175, cause the network element 190 to perform one or more operations such as functionality of an LMF as described herein.
  • a single LMF could serve a large region covered by hundreds of base stations.
  • the wireless network 100 may implement network virtualization, which is the process of combining hardware and software network resources and network functionality into a single, software-based administrative entity, a virtual network.
  • Network virtualization involves platform virtualization, often combined with resource virtualization.
  • Network virtualization is categorized as either external, combining many networks, or parts of networks, into a virtual unit, or internal, providing network-like functionality to software containers on a single system. Note that the virtualized entities that result from the network virtualization are still implemented, at some level, using hardware such as processors 152 or 175 and memories 155 and 171, and also such virtualized entities create technical effects.
  • the computer readable memories 125, 155, and 171 may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as semiconductor based memory devices, flash memory, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory.
  • the computer readable memories 125, 155, and 171 may be means for performing storage functions.
  • the processors 120, 152, and 175 may be of any type suitable to the local technical environment, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on a multi-core processor architecture, as non-limiting examples.
  • the processors 120, 152, and 175 may be means for performing functions, such as controlling the UE 110, RAN node 170, network element (s) 190, and other functions as described herein.
  • the various embodiments of the user equipment 110 can include, but are not limited to, cellular telephones such as smart phones, tablets, personal digital assistants (PDAs) having wireless communication capabilities, portable computers having wireless communication capabilities, image capture devices such as digital cameras having wireless communication capabilities, gaming devices having wireless communication capabilities, music storage and playback appliances having wireless communication capabilities, Internet appliances permitting wireless Internet access and browsing, tablets with wireless communication capabilities, as well as portable units or terminals that incorporate combinations of such functions.
  • cellular telephones such as smart phones, tablets, personal digital assistants (PDAs) having wireless communication capabilities, portable computers having wireless communication capabilities, image capture devices such as digital cameras having wireless communication capabilities, gaming devices having wireless communication capabilities, music storage and playback appliances having wireless communication capabilities, Internet appliances permitting wireless Internet access and browsing, tablets with wireless communication capabilities, as well as portable units or terminals that incorporate combinations of such functions.
  • PDAs personal digital assistants
  • portable computers having wireless communication capabilities
  • image capture devices such as digital cameras having wireless communication capabilities
  • gaming devices having wireless communication capabilities
  • music storage and playback appliances having wireless communication capabilities
  • UE 110, RAN node 170, and/or network element (s) 190, (and associated memories, computer program code and modules) may be configured to implement the methods described herein, including a method to implement a network-assisted transmit power control mechanism for positioning SRS in RRC inactive state.
  • computer program code 123, module 140-1, module 140-2, and other elements/features shown in FIG. 1 of UE 110 may implement user equipment related aspects of the methods described herein.
  • computer program code 153, module 150-1, module 150-2, and other elements/features shown in FIG. 1 of RAN node 170 may implement gNB/TRP related aspects of the methods as described herein.
  • Computer program code 173 and other elements/features shown in FIG. 1 of network element (s) 190 may be configured to implement network element related aspects of the methods as described herein (e.g. LMF related aspects) .
  • the examples described herein relate to Enhanced Positioning for Rel-17 NR and beyond.
  • the description herein focuses mainly on uplink power control (ULPC) of SRS for positioning in RRC inactive state at FR1.
  • ULPC uplink power control
  • NR Rel-16 native NR positioning support was standardized. As the result the following positioning solutions are now specified for NR Rel-16: Downlink Time Difference of Arrival (DL-TDOA) , Uplink Time Difference of Arrival (UL-TDOA) , Downlink Angle of Departure (DL-AoD) , Uplink Angle of Arrival (UL-AoA) , and Multi-cell Round Trip Time (Multi-RTT) . Also, a new SRS for uplink positioning was introduced.
  • DL-TDOA Downlink Time Difference of Arrival
  • UL-TDOA Uplink Time Difference of Arrival
  • DL-AoD Downlink Angle of Departure
  • U-AoA Uplink Angle of Arrival
  • Multi-RTT Multi-cell Round Trip Time
  • the pathloss reference RS and spatial relation information configured to one SRS resource for positioning can be a DL RS from either a serving cell or non-serving cell.
  • the pathloss reference signal and other power control parameters are configured per SRS resource set.
  • SRS resources for positioning in a set use the same path loss to calculate the transmit power. Details on UL power control for positioning SRS are included in TS 38.213.
  • uplink Positioning Reference Signal e.g. SRS
  • the positioning UE shall be configured or pre-configured with a dedicated SRS resource before entering RRC inactive state, which would benefit UE power saving and signaling overhead reduction as the inactive UE does not need to move to the RRC connected state for receiving the SRS configuration in RRC inactive state.
  • the TPC parameters e.g. P0, alpha and pathloss reference RS
  • spatial relation of SRS for uplink positioning are configured to the UE per SRS resource.
  • the pathloss reference RS can be a DL RS from either a serving cell or non-serving cell, which is used to estimate the pathloss for transmission of the positioning SRS.
  • RNA RAN-based notification area
  • the pathloss for transmission of the positioning SRS which is generally estimated based on the pathloss reference RS configured for a SRS resource, would be invalid if the UE moves in the RNA.
  • the pathloss reference RS used for uplink power control of positioning SRS is configured with a DL RS from one cell (e.g. the last serving cell) for a UE, and multiple LMUs (i.e. Location Measurement Units) are configured to measure the SRS from the same resource for UL positioning in RRC inactive state.
  • the pathloss estimated based on the configured pathloss reference RS becomes very large (refer to pathloss B 220 as e.g. compared to pathloss A 218) .
  • transmission of the positioning SRS generates strong interference to the neighboring devices; on the other hand, large output power of the positioning SRS results in large UE power consumption, which is contrary to the original intention for positioning in RRC inactive state.
  • the pathloss estimated based on the configured pathloss reference becomes very small (refer to pathloss C 222 as e.g. compared to pathloss A 218) .
  • the UE 110 transmits positioning SRS with lower power determined by the estimated pathloss, which would reduce the positioning SRS hearability at the neighboring cells and thus affects positioning performance (e.g. positioning accuracy) .
  • the positioning UE 110 moves from one cell to another cell within the RNA 202 in RRC inactive state, for example from cell-x 208 to cell-y 210, other power control parameters of the positioning SRS such as P0 and alpha configured in the SRS resource set may have the same issue as the pathloss reference RS.
  • the transmit power control parameters such as P0 and Alpha are determined by the network taking the inter-cell interference or target QoS into account. If the UE still uses the power control parameters in the SRS configuration, transmission of the positioning SRS generates strong interference to the network, or cannot meet the positioning requirement (e.g. positioning accuracy) .
  • a network-assisted TPC parameter determination mechanism is presented for positioning SRS to solve the issues caused by UE mobility in RRC inactive state at FR1, which is significant for the positioning device (e.g. asset tracking device) to reduce power consumption and processing complexity.
  • a network-assisted transmit power control mechanism is proposed herein for positioning SRS in RRC inactive state with low UE power consumption and complexity taking the UE mobility into account.
  • the LMF may determine and configure positioning assistance information for a positioning UE (e.g. asset tracking tag) , and then the UE may autonomously determine transmit power control parameters for positioning SRS in RRC inactive state based on the rule indication in the positioning assistance information. Taking the mobility into account, the UE does not need to frequently enter RRC connected state to update positioning SRS configuration in RRC inactive state while keeping good power control effects, which benefits UE power saving and complexity reduction.
  • a positioning UE e.g. asset tracking tag
  • the LMF collects information from the UE or/and network for configuration of positioning assistance information including but not limited to: the capability, UE pathloss or/and interference information from network nodes; the capability information from the positioning UE; and/or the positioning requirement from the LCS client.
  • the network configures a rule for the UE to determine transmit power control parameters for positioning SRS in RRC inactive state based on the collected information.
  • the LMF can indicate the positioning UE to use a set of semi-static power control parameters (e.g. nominal pathloss) for transmission of positioning SRS in RRC inactive state.
  • the LMF can indicate the positioning UE to autonomously determine a set of power control parameters for transmission of positioning SRS in RRC inactive state based on certain metrics (e.g. SSB-RSRP of LMUs/TRPs, UE power status) .
  • the rule and corresponding parameters can be signaled to the UE as positioning assistance information by the LMF based on the LPP protocol, or signaled by a gNB e.g. through IE SRS-Config after the LMF forwards the assistance information to the gNB.
  • the positioning assistance information can be signaled to the UE in RRC connected state or in RRC inactive state e.g. through paging or a RACH-based procedure.
  • the UE autonomously determines power control parameters of the positioning SRS in RRC inactive state based on the rule indication.
  • the power control parameters include but are not limited to P0, Alpha and pathloss for transmission of the positioning SRS in RRC inactive state.
  • FIG. 3 illustrates a flowchart 300 of the method where the LMF 302 configures positioning assistance information for UE 110 to determine TPC parameters.
  • the method is described below and can be summarized as steps 1-4, respectively steps 308, 314, 316, and 324 in FIG. 3.
  • Step 1 the LMF 302 collects capability or/and status information from the UE 110 and network 170 for configuration of the positioning assistance information.
  • the LMF 302 collects the information from network nodes (e.g. TRPs/LMUs/gNBs, collectively 170) for determination of the TPC rule and parameters for the positioning SRS in RRC inactive state including e.g. i) the pathloss 306 between the positioning UE and the network node, ii) the interference level (e.g. the average interference level or/and target interference level) of network nodes 170, and/or iii) the capability 307 of network nodes 170, e.g. whether or not to transmit downlink synchronization signaling.
  • the LMF 302 can collect the above information from TRPs 170 through the NRPPa protocol like in Rel-16 NR.
  • the LMF 302 collects the UE capability information 312 for support of autonomous transmit power control of positioning in RRC inactive state including but not limited to: i) a positioning mode indication, which is used to indicate whether or not the UE 110 supports the UL positioning in RRC inactive state. For example, if the positioning mode indication shows that the UE 110 supports uplink positioning in RRC inactive state, the LMF 302 can configure the UE 110 to autonomously determine the TPC parameters of the positioning SRS in RRC inactive state for UE power saving; and/or ii) an indication of the UE power classification, which may be used to determine what rule the UE may apply for transmission of the positioning SRS. For example, the LMF 302 can collect UE capability information 312 from the positioning UE 110 through the LPP protocol like in Rel-16 NR.
  • the LMF 302 collects the positioning requirement 310 (e.g. accuracy or/and latency) from the LCS client 304 based on the existing positioning procedure in Rel-16 NR.
  • the positioning requirement 310 e.g. accuracy or/and latency
  • Step 2 In step 2 314, with the collected capability or/and status information (306/307/310/312) , the LMF 302 determines a rule for the UE 110 to determine transmit power control parameters for the positioning SRS in RRC inactive state.
  • the network can indicate the positioning UE 110 to use a set of semi-static transmit power control parameters in RRC inactive state if e.g. the UE 110 is a low power device or the TRPs 170 do not transmit SSB (i.e. downlink synchronization signal) .
  • the set of power control parameters could include at least one of the P0, alpha and nominal pathloss used for transmission of the positioning SRS.
  • the network e.g. LMF 302 can determine the set of parameters taking the collected network information (e.g. the estimated pathloss, interference level or positioning requirement) into account.
  • the network e.g.
  • the LMF 302 can determine a nominal pathloss value based on the estimated UE pathloss collected from the TRPs 170. For example, the LMF 302 can select a median of the estimated pathloss values from a number of best TRPs for a UE (e.g. 3 TRPs) . For this embodiment, the UE 110 does not need to dynamically estimate pathloss based on the configured pathloss reference RS for UE power saving, and further avoids using an invalid/unreasonable output power for transmission of positioning SRS in the RRC inactive state.
  • the network can configure the positioning UE 110 to autonomously determine a set of power control parameters for transmission of positioning SRS based on the outcome of downlink measurements from TRPs 170.
  • the LMF 302 can indicate the positioning UE 110 to select one best cell from a list of configured cells (e.g. TRPs 170) as the reference cell based on RSRP measured based on the SSB or other DL-RS (e.g. DL-PTS) from the TRP. And then the UE 110 can estimate the pathloss between the reference cell and the UE 110 and use the P0 and Alpha read from the PBCH of the reference cell for transmission of the positioning SRS.
  • the LMF 302 can configure the positioning UE 110 to autonomously select one of the pre-defined or configured rules for power control parameter determination of the positioning SRS based on certain metrics, e.g. UE power status.
  • Steps 3 and 4 are examples for rule design which enable the UE 110 to determine the transmit power parameters of the positioning SRS in RRC inactive state. Other rules or/and the combined usage of the rules are not excluded for the embodiments described herein.
  • Step 3 In step 3 316, the LMF 302 configures the rule and corresponding parameters as the positioning assistance data for uplink positioning based on SRS.
  • the LMF 302 can directly signal the positioning assistance data to the positioning UE 110 based on the LPP protocol as illustrated by option 1 318 in FIG. 3.
  • the LMF 302 at 320 firstly forwards the positioning assistance data to a gNB 170 (e.g. the serving/anchor gNB 204/206 of the positioning UE 110) through the NRPPa protocol, and then the gNB 170 at 322 configures the positioning assistance data to the UE 110 (e.g. through IE SRS-Config) as illustrated by option 2 318 in FIG. 3.
  • a gNB 170 e.g. the serving/anchor gNB 204/206 of the positioning UE 110
  • the gNB 170 at 322 configures the positioning assistance data to the UE 110 (e.g. through IE SRS-Config) as illustrated by option 2 318 in FIG. 3.
  • the positioning assistance data can be signaled to the UE 110 in RRC connected state, e.g. before the UE 110 enters the RRC inactive state.
  • the positioning assistance data can be signaled to the UE 110 in the RRC inactive state e.g. based on the paging procedure, a RACH or CG-based procedure.
  • Step 4 the UE 110 receives the positioning assistance data from the LMF 302 (e.g. via the TRPs/gNB 170) and then determines how to obtain transmit power control parameters of the positioning SRS in the RRC inactive state based on the rule indication in the positioning assistance data.
  • LMF 302 may exist within the network element (s) 190 shown in FIG. 1 and implemented by computer program code 173. In other examples, the LMF 302 is resident within module 150, including module 150-1 and/or module 150-2 of RAN node 170. In other examples, the LMF 302 is resident within another UE similar to UE 110.
  • step 3 316 If the rule A1 in step 3 316 is configured for the UE 110, the UE 110 uses a set of the configured parameters (e.g. P0, alpha or nominal pathloss) for transmit power control of the positioning SRS in the RRC inactive state. And then the UE 110 determines the output power of the positioning SRS using the configured parameters.
  • the configured parameters e.g. P0, alpha or nominal pathloss
  • the UE 110 synchronizes with a list of configured TRPs 170 and measures the SSB of the TRPs 170. Based on the measurement outcome, the UE 110 selects one of the TRPs 170 with the highest SSB-RSRP as the reference cell, and then determines transmit power parameters for the positioning SRS based on the reference cell. For example, the UE 110 estimates the pathloss between the reference cell and itself, and reads the P0 and Alpha value from the PBCH of the reference cell. After that, the UE 110 determines the output power of the positioning SRS using the configured parameters.
  • the UE 110 can be configured to autonomously select one of the configured rules based on certain metrics, e.g. UE power status. If the UE 110 is in a high power level (i.e. the power level is higher than a given threshold) , the UE 110 can select to measure the TRPs 170 and then select one best TRP 170 from a list of configured TRPs 170 as the reference cell.
  • certain metrics e.g. UE power status.
  • the UE 110 can estimate the pathloss based on the SSB transmission and reference cell, or further obtain the P0 and Alpha value by reading the PBCH of the reference cell for power control of the positioning SRS. If the UE 110 is in a low power level (i.e. the power level is lower than a given threshold) , the UE 110 can select to use the set of fixed transmit power control parameters for transmission of the positioning SRS in RRC inactive state. In this case, the UE 110 does not need to perform any measurement for pathloss estimation and other parameters, which would benefit UE power saving in the case of low power level status.
  • the network e.g. 190
  • the UE 110 needs to obey the constraint if configured.
  • the LMF 302 can configure a maximum pathloss (or output power) constraint through the positioning assistance information for the positioning UE 110, and thus the UE 110 sets the actual pathloss (or output power) so that it does not become larger than the configured maximum pathloss (or output power) .
  • the LMF 302 can configure a minimum pathloss (or output power) constraint through the positioning assistance information for the positioning UE 110, and thus the UE 110 sets the actual pathloss (or output power) so that it does not become lower than the configured minimum pathloss (or output power) .
  • the examples described herein provide an efficient mechanism for the UE 110 to autonomously determine TPC parameters in RRC inactive state based on network assistance. Further, the examples described herein efficiently combat adverse impact of UE mobility on positioning and network performance, e.g. SRS hearability and network interference level. Further, the examples described herein benefit UE power saving and complexity reduction of the positioning UE 110 as the inactive UE 110 does not need to enter the RRC connected state for SRS configuration update taking the UE mobility into account.
  • FIG. 4 is an example apparatus 400, which may be implemented in hardware, configured to implement the examples described herein.
  • the apparatus 400 comprises a processor 402, at least one non-transitory memory 404 including computer program code 405, where the at least one memory 404 and the computer program code 405 are configured to, with the at least one processor 402, cause the apparatus to implement circuitry, a process, component, module, or function (collectively signaling 406) to implement the examples described herein.
  • the apparatus 400 optionally includes a display and/or I/O interface 408 that may be used to display aspects or a status of the methods described herein (e.g., as one of the methods is being performed or at a subsequent time) .
  • the apparatus 400 includes one or more network (N/W) interfaces (I/F (s) ) 410.
  • the N/W I/F (s) 410 may be wired and/or wireless and communicate over the Internet/other network (s) via any communication technique.
  • the N/W I/F (s) 410 may comprise one or more transmitters and one or more receivers.
  • the N/W I/F (s) 410 may comprise standard well-known components such as an amplifier, filter, frequency-converter, (de) modulator, and encoder/decoder circuitries and one or more antennas.
  • the apparatus 400 may be UE 110, RAN node 170, or network element (s) 190 (e.g. to implement the functionality of the LMF 302) .
  • processor 402 may correspond respectively to processor (s) 120, processor (s) 152, or processor (s) 175, memory 404 may correspond respectively to memory (ies) 125, memory (ies) 155, or memory (ies) 171,
  • computer program code 405 may correspond respectively to computer program code 123, module 140-1, module 140-2, computer program code 153, module 150-1, module 150-2, or computer program code 173, and N/W I/F (s) 410 may correspond respectively to N/W I/F (s) 161 or N/W I/F (s) 180.
  • apparatus 400 may not correspond to either of UE 110, RAN node 170, or network element (s) 190.
  • Interface 412 enables data communication between the various items of apparatus 400, as shown in FIG. 4.
  • Interface 412 may be one or more buses, or interface 412 may be one or more software interfaces configured to pass data between the items of apparatus 400.
  • the interface 412 may be one or more buses such as address, data, or control buses, and may include any interconnection mechanism, such as a series of lines on a motherboard or integrated circuit, fiber optics or other optical communication equipment, and the like.
  • the apparatus 400 need not comprise each of the features mentioned, or may comprise other features as well.
  • references to a ‘computer’ , ‘processor’ , etc. should be understood to encompass not only computers having different architectures such as single/multi-processor architectures and sequential (Von Neumann) /parallel architectures but also specialized circuits such as field-programmable gate arrays (FPGAs) , application specific circuits (ASICs) , signal processing devices and other processing circuitry.
  • References to computer program, instructions, code etc. should be understood to encompass software for a programmable processor or firmware such as, for example, the programmable content of a hardware device whether instructions for a processor, or configuration settings for a fixed-function device, gate array or programmable logic device etc.
  • the memory (ies) as described herein may be implemented using any suitable data storage technology, such as semiconductor based memory devices, flash memory, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory.
  • the memory (ies) may comprise a database for storing data.
  • circuitry may refer to the following: (a) hardware circuit implementations, such as implementations in 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 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.
  • FIG. 5 is an example method 500 to implement a network-assisted transmit power control mechanism for positioning SRS in RRC inactive state, based on the example embodiments described herein.
  • the method includes collecting information from a user equipment or at least one network node related to a configuration of positioning assistance information for the user equipment.
  • the method includes determining a rule for one or more transmit power control parameters of the user equipment for a positioning reference signal in a radio resource control inactive state, based on the collected information.
  • the method includes signaling the rule and the one or more transmit power control parameters either to the user equipment, or to the at least one network node.
  • the method includes wherein the one or more transmit power control parameters are configured to be used for a transmission of a positioning reference signal in a radio resource control inactive state, based on the rule.
  • the method 500 may be performed by network element (s) 190, LMF 302, or by apparatus 400.
  • FIG. 6 is another example method 600 to implement a network-assisted transmit power control mechanism for positioning SRS in RRC inactive state, based on the example embodiments described herein.
  • the method includes providing capability information to a location management function related to a configuration of positioning assistance information for a user equipment.
  • the method includes receiving a rule related to one or more transmit power control parameters of the user equipment for a positioning reference signal in a radio resource control inactive state, based on the provided capability information.
  • the method includes wherein the rule is received from the location management function, or from at least one network node.
  • the method includes determining the one or more transmit power control parameters for a transmission of the positioning reference signal in a radio resource control inactive state, based on the rule.
  • the method 600 may be performed by UE 110, or by apparatus 400.
  • FIG. 7 is another example method 700 to implement a network-assisted transmit power control mechanism for positioning SRS in RRC inactive state, based on the example embodiments described herein.
  • the method includes providing information to a location management function related to a configuration of positioning assistance information for a user equipment.
  • the method includes receiving a signal related to a rule and one or more transmit power control parameters, based on the provided information.
  • the method includes transmitting the rule and the one or more transmit power control parameters to the user equipment.
  • the method includes wherein the one or more transmit power control parameters are configured to be used for a transmission of a positioning reference signal in a radio resource control inactive state, based on the rule.
  • the method 700 may be performed by network node 170, or by apparatus 400.
  • An example method includes collecting information from a user equipment or at least one network node related to a configuration of positioning assistance information for the user equipment; determining a rule for one or more transmit power control parameters of the user equipment for a positioning reference signal in a radio resource control inactive state, based on the collected information; and signaling the rule and the one or more transmit power control parameters either to the user equipment, or to the at least one network node; wherein the one or more transmit power control parameters are configured to be used for a transmission of a positioning reference signal in a radio resource control inactive state, based on the rule.
  • the information collected from the user equipment or from the at least one network node may be at least one of: capability, user equipment pathloss, or interference from the at least one network node; capability information from the user equipment; or a positioning requirement from a location services client.
  • the rule for the one or more transmit power control parameters of the user equipment may comprise: an indication to the user equipment to use a set of semi-static power control parameters for the transmission of the positioning reference signal in the radio resource control inactive state; or an indication to the user equipment to autonomously determine a set of power control parameters for transmission of the positioning reference signal in the radio resource control inactive state based on at least one metric.
  • the at least one metric may be one or more of: a reference signal received power of a location measurement unit; a reference signal received power of the at least one network node; or a power status of the user equipment.
  • the signaling may comprise signaling the rule and the one or more transmit power control parameters to the user equipment using a long term evolution positioning protocol.
  • the one or more transmit power control parameters of the positioning reference signal in the radio resource control inactive state may comprise one or more of target received power, a compensation factor, pathloss, or output power.
  • the signaling may comprise transmitting the rule and the one or more transmit power control parameters while the user equipment is in a radio resource control connected state; or transmitting the rule and the one or more transmit power control parameters while the user equipment is in a radio resource control inactive state through a paging procedure, a random access channel based procedure, or a configured grant based procedure.
  • the positioning reference signal may be a sounding reference signal, a demodulation reference signal (DM-RS) , a random access channel preamble, or a dedicated reference signal for positioning.
  • DM-RS demodulation reference signal
  • An example method includes providing capability information to a location management function related to a configuration of positioning assistance information for a user equipment; receiving a rule related to one or more transmit power control parameters of the user equipment for a positioning reference signal in a radio resource control inactive state, based on the provided capability information; wherein the rule is received from the location management function, or from at least one network node; and determining the one or more transmit power control parameters for a transmission of the positioning reference signal in a radio resource control inactive state, based on the rule.
  • the rule for the one or more transmit power control parameters of the user equipment may comprise: an indication to the user equipment to use a set of semi-static power control parameters for the transmission of the positioning reference signal in the radio resource control inactive state; or an indication to the user equipment to autonomously determine a set of power control parameters for transmission of the positioning reference signal in the radio resource control inactive state based on at least one metric.
  • the determining may comprise: when the indication to the user equipment is to use the set of semi-static power control parameters for the transmission of the positioning reference signal in the radio resource control inactive state, determining an output power of the positioning reference signal using the semi-static power control parameters; and when the indication to the user equipment is to autonomously determine a set of power control parameters for transmission of the positioning reference signal in the radio resource control inactive state based on at least one metric: synchronizing with a list of configured one or more network nodes; measuring a reference signal of the one or more network nodes; selecting one of the one or more network nodes with a highest reference signal received power as a reference, based on the measuring; and determining the set of power control parameters for transmission of the positioning reference signal in the radio resource control inactive state, based on the reference.
  • the determining may comprise autonomously determining the set of power control parameters for transmission of the positioning reference signal in the radio resource control inactive state based on a power status of the user equipment.
  • the at least one metric may be one or more of: a reference signal received power of a location measurement unit; a reference signal received power of the at least one network node; or a power status of the user equipment.
  • the receiving may comprise: receiving the rule and the one or more transmit power control parameters from the location management function through a long term evolution positioning protocol; or receiving the rule and the one or more transmit power control parameters from the at least one network node through a positioning reference signal configuration information element.
  • the one or more transmit power control parameters of the positioning reference signal in the radio resource control inactive state may comprise one or more of target received power, a compensation factor, pathloss, or output power.
  • the receiving may comprise: receiving the rule and the one or more transmit power control parameters while the user equipment is in a radio resource control connected state; or receiving the rule and the one or more transmit power control parameters while the user equipment is in a radio resource control inactive state through a paging procedure, a random access channel based procedure, or a configured grant based procedure.
  • the positioning reference signal may be a sounding reference signal, a demodulation reference signal, a random access channel preamble, or a dedicated reference signal for positioning.
  • An example method includes providing information to a location management function related to a configuration of positioning assistance information for a user equipment; receiving a signal related to a rule and one or more transmit power control parameters, based on the provided information; and transmitting the rule and the one or more transmit power control parameters to the user equipment; wherein the one or more transmit power control parameters are configured to be used for a transmission of a positioning reference signal in a radio resource control inactive state, based on the rule.
  • the information provided to the location management function may be at least one of capability, user equipment pathloss, or interference from a network node.
  • the rule for the one or more transmit power control parameters of the user equipment may comprise: an indication to the user equipment to use a set of semi-static power control parameters for the transmission of the positioning reference signal in the radio resource control inactive state; or an indication to the user equipment to autonomously determine a set of power control parameters for transmission of the positioning reference signal in the radio resource control inactive state based on at least one metric.
  • the at least one metric may be one or more of: a reference signal received power of a location measurement unit; a reference signal received power of a network node; or a power status of the user equipment.
  • the rule and the one or more transmit power control parameters may be transmitted to the user equipment using a positioning reference signal configuration information element.
  • the one or more transmit power control parameters of the positioning reference signal in the radio resource control inactive state may comprise one or more of target received power, a compensation factor, pathloss, or output power.
  • the rule and the one or more transmit power control parameters may be transmitted while the user equipment is in a radio resource control connected state; or the rule and the one or more transmit power control parameters may be transmitted while the user equipment is in a radio resource control inactive state through a paging procedure, a random access channel based procedure, or a configured grant based procedure.
  • the positioning reference signal may be a sounding reference signal, a demodulation reference signal, a random access channel preamble, or a dedicated reference signal for positioning.
  • An example apparatus includes at least one processor; and at least one non-transitory memory including computer program code; wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to: collect information from a user equipment or at least one network node related to a configuration of positioning assistance information for the user equipment; determine a rule for one or more transmit power control parameters of the user equipment for a positioning reference signal in a radio resource control inactive state, based on the collected information; and signal the rule and the one or more transmit power control parameters either to the user equipment, or to the at least one network node; wherein the one or more transmit power control parameters are configured to be used for a transmission of a positioning reference signal in a radio resource control inactive state, based on the rule.
  • An example apparatus includes at least one processor; and at least one non-transitory memory including computer program code; wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to: provide capability information to a location management function related to a configuration of positioning assistance information for a user equipment; receive a rule related to one or more transmit power control parameters of the user equipment for a positioning reference signal in a radio resource control inactive state, based on the provided capability information; wherein the rule is received from the location management function, or from at least one network node; and determine the one or more transmit power control parameters for a transmission of the positioning reference signal in a radio resource control inactive state, based on the rule.
  • An example apparatus includes at least one processor; and at least one non-transitory memory including computer program code; wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to: provide information to a location management function related to a configuration of positioning assistance information for a user equipment; receive a signal related to a rule and one or more transmit power control parameters, based on the provided information; and transmit the rule and the one or more transmit power control parameters to the user equipment; wherein the one or more transmit power control parameters are configured to be used for a transmission of a positioning reference signal in a radio resource control inactive state, based on the rule.
  • An apparatus includes means for collecting information from a user equipment or at least one network node related to a configuration of positioning assistance information for the user equipment; means for determining a rule for one or more transmit power control parameters of the user equipment for a positioning reference signal in a radio resource control inactive state, based on the collected information; and means for signaling the rule and the one or more transmit power control parameters either to the user equipment, or to the at least one network node; wherein the one or more transmit power control parameters are configured to be used for a transmission of a positioning reference signal in a radio resource control inactive state, based on the rule.
  • An example apparatus includes means for providing capability information to a location management function related to a configuration of positioning assistance information for a user equipment; means for receiving a rule related to one or more transmit power control parameters of the user equipment for a positioning reference signal in a radio resource control inactive state, based on the provided capability information; wherein the rule is received from the location management function, or from at least one network node; and means for determining the one or more transmit power control parameters for a transmission of the positioning reference signal in a radio resource control inactive state, based on the rule.
  • An example apparatus includes means for providing information to a location management function related to a configuration of positioning assistance information for a user equipment; means for receiving a signal related to a rule and one or more transmit power control parameters, based on the provided information; and means for transmitting the rule and the one or more transmit power control parameters to the user equipment; wherein the one or more transmit power control parameters are configured to be used for a transmission of a positioning reference signal in a radio resource control inactive state, based on the rule.
  • An example non-transitory program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine for performing operations comprising: collecting information from a user equipment or at least one network node related to a configuration of positioning assistance information for the user equipment; determining a rule for one or more transmit power control parameters of the user equipment for a positioning reference signal in a radio resource control inactive state, based on the collected information; and signaling the rule and the one or more transmit power control parameters either to the user equipment, or to the at least one network node; wherein the one or more transmit power control parameters are configured to be used for a transmission of a positioning reference signal in a radio resource control inactive state, based on the rule.
  • An example non-transitory program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine for performing operations comprising: providing capability information to a location management function related to a configuration of positioning assistance information for a user equipment; receiving a rule related to one or more transmit power control parameters of the user equipment for a positioning reference signal in a radio resource control inactive state, based on the provided capability information; wherein the rule is received from the location management function, or from at least one network node; and determining the one or more transmit power control parameters for a transmission of the positioning reference signal in a radio resource control inactive state, based on the rule.
  • An example non-transitory program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine for performing operations comprising: providing information to a location management function related to a configuration of positioning assistance information for a user equipment; receiving a signal related to a rule and one or more transmit power control parameters, based on the provided information; and transmitting the rule and the one or more transmit power control parameters to the user equipment; wherein the one or more transmit power control parameters are configured to be used for a transmission of a positioning reference signal in a radio resource control inactive state, based on the rule.

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Abstract

Un procédé consiste à collecter des informations en provenance d'un équipement utilisateur ou d'au moins un nœud de réseau associé à une configuration d'informations d'assistance de positionnement pour l'équipement utilisateur; à déterminer une règle pour un ou plusieurs paramètres de commande de puissance d'émission de l'équipement utilisateur pour un signal de référence de positionnement dans un état inactif de commande de ressource radio, sur la base des informations collectées; et à signaler la règle et le ou les paramètres de commande de puissance d'émission soit à l'équipement d'utilisateur, soit audit nœud de réseau; le ou les paramètres de commande de puissance d'émission étant configurés pour être utilisés pour une transmission d'un signal de référence de positionnement dans un état inactif de commande de ressource radio, sur la base de ladite règle.
PCT/CN2021/072167 2021-01-15 2021-01-15 Mécanisme de commande de puissance d'émission assistée par réseau pour positionner un srs dans un état inactif de rrc WO2022151354A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2021/072167 WO2022151354A1 (fr) 2021-01-15 2021-01-15 Mécanisme de commande de puissance d'émission assistée par réseau pour positionner un srs dans un état inactif de rrc
CN202210040670.0A CN114765847B (zh) 2021-01-15 2022-01-14 Rrc不活动状态定位srs网络辅助发射功率控制机制

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PCT/CN2021/072167 WO2022151354A1 (fr) 2021-01-15 2021-01-15 Mécanisme de commande de puissance d'émission assistée par réseau pour positionner un srs dans un état inactif de rrc

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