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WO2025035334A1 - Améliorations de positionnement avec dtx/drx de cellule - Google Patents

Améliorations de positionnement avec dtx/drx de cellule Download PDF

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Publication number
WO2025035334A1
WO2025035334A1 PCT/CN2023/112770 CN2023112770W WO2025035334A1 WO 2025035334 A1 WO2025035334 A1 WO 2025035334A1 CN 2023112770 W CN2023112770 W CN 2023112770W WO 2025035334 A1 WO2025035334 A1 WO 2025035334A1
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WO
WIPO (PCT)
Prior art keywords
cell
positioning
configuration
dtx
positioning signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2023/112770
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English (en)
Inventor
Ahlem KHLASS
Mads LAURIDSEN
Tao Tao
Daniela Laselva
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Shanghai Bell Co Ltd
Nokia Solutions and Networks Oy
Nokia Technologies Oy
Original Assignee
Nokia Shanghai Bell Co Ltd
Nokia Solutions and Networks Oy
Nokia Technologies Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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/CN2023/112770 priority Critical patent/WO2025035334A1/fr
Publication of WO2025035334A1 publication Critical patent/WO2025035334A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]

Definitions

  • Various example embodiments of the present disclosure generally relate to the field of telecommunication and in particular, to methods, devices, apparatuses and computer readable storage medium for positioning enhancements.
  • cell DTX/DRX discontinuous transmission (DTX) and/or discontinuous reception (DRX) mechanisms are supported in cells for network energy saving purpose, which may be collectively called cell DTX/DRX.
  • Cell DTX/DRX allows a gNB to turn off, partially or completely, transmission and reception for user data traffic, control signaling, and reference signals during cell DTX/DRX inactive periods where the gNB enters a sleep state.
  • PRSs positioning reference signals
  • SRSs sounding reference signals
  • an apparatus comprising at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: receive a first positioning configuration comprising an indication indicating a first type of a positioning signal to be communicated during both a serving cell active and inactive periods; and receive, based on the first positioning configuration, at least one first positioning signal having the first type from at least one of serving cell or non-serving cell during the cell active and inactive periods; or transmit, based on the first positioning configuration, at least one first positioning signal having the first type to at least one of serving cell or non-serving cell during the cell active and inactive period.
  • the apparatus may be implemented in a user device, or it may be the user device itself.
  • a first apparatus comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the first apparatus at least to: receive, from a second apparatus controlling a serving cell for a third apparatus, cell discontinuous operation configuration information associated with the serving cell; determine, based on the cell discontinuous operation configuration information, a first positioning configuration comprising an indication indicating a first type of positioning signal to be transmitted during both serving cell active and inactive periods; and transmit, to at least the second apparatus, the third apparatus, or a fourth apparatus, the first positioning configuration, the fourth apparatus controlling a non serving cell.
  • the first apparatus may be implemented in a Location Management Function (LMF) , or it may be the LMF.
  • LMF Location Management Function
  • a second apparatus comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the second apparatus at least to: transmit, to a first apparatus for location management, cell discontinuous operation configuration information associated with a serving cell of the second apparatus; receive, from the first apparatus, a first positioning configuration comprising an indication indicating a first type of positioning signal to be communicated during both serving cell active and inactive periods; and transmit, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal having the first type; or receive, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal having the first type from the third apparatus.
  • the second apparatus may be implemented in a serving gNB, or it may be the serving gNB.
  • a fourth apparatus comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the fourth apparatus at least to: exchange cell discontinuous operation configuration information with a second apparatus controlling a serving cell for a third apparatus, the fourth apparatus controlling a non-serving cell for the third apparatus; receive, from a first apparatus for location management, a first positioning configuration comprising an indication indicating at least one of a first type of positioning signal to be transmitted during both serving cell active and inactive periods; and transmit, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal; or receive, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal.
  • the fourth apparatus may be implemented in a neighboring gNB, or it may be the neighboring gNB.
  • a fifth apparatus comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the fifth apparatus at least to: receive, from a group of sixth apparatuses associated with a location service, cell discontinuous operation configuration information comprising a plurality of cell DTX/DRX patterns per cell, a cell DTX/DRX pattern activation/deactivation indication and a transmission status of a positioning signal with respect to cell DTX activation status; determine, based on the cell discontinuous operation configuration information and a requirement on the location service, a candidate cell DTX/DRX pattern from the plurality of cell DTX/DRX patterns; and transmit, to the group of sixth apparatuses, information on the candidate cell DTX/DRX pattern.
  • the fifth apparatus may be implemented in the LMF, or it may be the LMF.
  • a sixth apparatus comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the sixth apparatus at least to: transmit, to a fifth apparatus for location management, cell discontinuous operation configuration information comprising a cell DTX/DRX pattern of a cell controlling by the sixth apparatus, a cell DTX/DRX pattern activation/deactivation indication and a transmission status of a positioning signal with respect to cell DTX activation status; and receive, from the fifth apparatus, information on a candidate cell DTX/DRX pattern.
  • the sixth apparatus may be implemented in a gNB, or it may be the gNB.
  • a method comprises: receiving, at an apparatus, a first positioning configuration comprising an indication indicating a first type of a positioning signal to be communicated during both serving cell active and inactive periods; and receiving, based on the first positioning configuration, at least one first positioning signal having the first type from at least one of serving cell or non-serving cell during the cell active and inactive periods; or transmitting, based on the first positioning configuration, at least one first positioning signal having the first type to at least one of serving cell or non-serving cell during the cell active and inactive period.
  • a method comprises: receiving, at a first apparatus from a second apparatus controlling a serving cell for a third apparatus, cell discontinuous operation configuration information associated with the serving cell; determining, based on the cell discontinuous operation configuration information, a first positioning configuration comprising an indication indicating a first type of positioning signal to be transmitted during both serving cell active and inactive periods; and transmitting, to at least the second apparatus, the third apparatus, or a fourth apparatus, the first positioning configuration, the fourth apparatus controlling a non serving cell.
  • a method comprises: transmitting, at a second apparatus and to a first apparatus for location management, cell discontinuous operation configuration information associated with a serving cell of the second apparatus; receiving, from the first apparatus, a first positioning configuration comprising an indication indicating a first type of positioning signal to be communicated during both serving cell active and inactive periods; and transmitting, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal having the first type; or receiving, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal having the first type from the third apparatus.
  • a method comprising: exchanging cell discontinuous operation configuration information with a second apparatus controlling a serving cell for a third apparatus, the fourth apparatus controlling a non-serving cell for the third apparatus; receiving, from a first apparatus for location management, a first positioning configuration comprising an indication indicating at least one of a first type of positioning signal to be transmitted during both serving cell active and inactive periods; and transmitting, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal; or receiving, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal.
  • a method comprises: receiving, at a fifth apparatus and from a group of sixth apparatuses associated with a location service, cell discontinuous operation configuration information comprising a plurality of cell DTX/DRX patterns per cell, a cell DTX/DRX pattern activation/deactivation indication and a transmission status of a positioning signal with respect to cell DTX activation status; determining, based on the cell discontinuous operation configuration information and a requirement on the location service, a candidate cell DTX/DRX pattern from the plurality of cell DTX/DRX patterns; and transmitting, to the group of sixth apparatuses, information on the candidate cell DTX/DRX pattern.
  • a method comprises: transmitting, at a sixth apparatus and to a fifth apparatus for location management, cell discontinuous operation configuration information comprising a cell DTX/DRX pattern of a cell controlling by the sixth apparatus, a cell DTX/DRX pattern activation/deactivation indication and a transmission status of a positioning signal with respect to cell DTX activation status; and receiving, from the fifth apparatus, information on a candidate cell DTX/DRX pattern.
  • an apparatus comprising: means for receiving a first positioning configuration comprising an indication indicating a first type of a positioning signal to be communicated during both serving cell active and inactive periods; and means for receiving, based on the first positioning configuration, at least one first positioning signal having the first type from at least one of serving cell or non-serving cell during the cell active and inactive periods; or means for transmitting, based on the first positioning configuration, at least one first positioning signal having the first type to at least one of serving cell or non-serving cell during the cell active and inactive period.
  • a fourteenth aspect of the present disclosure there is provided a first apparatus.
  • the first apparatus comprises: means for receiving, from a second apparatus controlling a serving cell for a third apparatus, cell discontinuous operation configuration information associated with the serving cell; means for determining, based on the cell discontinuous operation configuration information, a first positioning configuration comprising an indication indicating a first type of positioning signal to be transmitted during both serving cell active and inactive periods; and means for transmitting, to at least the second apparatus, the third apparatus, or a fourth apparatus, the first positioning configuration, the fourth apparatus controlling a non serving cell.
  • a second apparatus comprises: means for transmitting, to a first apparatus for location management, cell discontinuous operation configuration information associated with a serving cell of the second apparatus; means for receiving, from the first apparatus, a first positioning configuration comprising an indication indicating a first type of positioning signal to be communicated during both serving cell active and inactive periods; and means for transmitting, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal having the first type; or means for receiving, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal having the first type from the third apparatus.
  • a fourth apparatus comprises: means for exchanging cell discontinuous operation configuration information with a second apparatus controlling a serving cell for a third apparatus, the fourth apparatus controlling a non-serving cell for the third apparatus; means for receiving, from a first apparatus for location management, a first positioning configuration comprising an indication indicating at least one of a first type of positioning signal to be transmitted during both serving cell active and inactive periods; and means for transmitting, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal; or means for receiving, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal.
  • a fifth apparatus comprises: means for means for receiving, from a group of sixth apparatuses associated with a location service, cell discontinuous operation configuration information comprising a plurality of cell DTX/DRX patterns per cell, a cell DTX/DRX pattern activation/deactivation indication and a transmission status of a positioning signal with respect to cell DTX activation status; means for determining, based on the cell discontinuous operation configuration information and a requirement on the location service, a candidate cell DTX/DRX pattern from the plurality of cell DTX/DRX patterns; and means for transmitting, to the group of sixth apparatuses, information on the candidate cell DTX/DRX pattern.
  • a sixth apparatus comprises: means for transmitting, to a fifth apparatus for location management, cell discontinuous operation configuration information comprising a cell DTX/DRX pattern of a cell controlling by the sixth apparatus, a cell DTX/DRX pattern activation/deactivation indication and a transmission status of a positioning signal with respect to cell DTX activation status; and means for receiving, from the fifth apparatus, information on a candidate cell DTX/DRX pattern.
  • a computer readable medium comprises instructions stored thereon for causing an apparatus to perform at least the method according to one of the seventh aspect, the eighth aspect, the ninth aspect, the tenth aspect, the eleventh aspect, and the twelfth aspect.
  • FIG. 1 illustrates an example communication environment in which example embodiments of the present disclosure can be implemented
  • FIG. 2 illustrates a signaling chart for setup of a positioning procedure
  • FIG. 3 illustrates a schematic diagram of PRS transmission occasions monitored by a UE according to some example embodiments of the present disclosure
  • FIG. 4 illustrates a signaling chart for an example positioning procedure according to some example embodiments of the present disclosure
  • FIG. 5 illustrates a signaling chart for an example positioning procedure according to some example embodiments of the present disclosure
  • FIG. 6 illustrates a signaling chart for an example positioning procedure according to some example embodiments of the present disclosure
  • FIG. 7 illustrates a flowchart of a method implemented at an apparatus according to some example embodiments of the present disclosure
  • FIG. 8 illustrates a flowchart of a method implemented at a first apparatus according to some example embodiments of the present disclosure
  • FIG. 9 illustrates a flowchart of a method implemented at a second apparatus according to some example embodiments of the present disclosure.
  • FIG. 10 illustrates a flowchart of a method implemented at a fourth apparatus according to some example embodiments of the present disclosure
  • FIG. 11 illustrates a flowchart of a method implemented at a fifth apparatus according to some example embodiments of the present disclosure
  • FIG. 12 illustrates a flowchart of a method implemented at a sixth apparatus according to some example embodiments of the present disclosure
  • FIG. 13 illustrates a simplified block diagram of a device that is suitable for implementing example embodiments of the present disclosure.
  • FIG. 14 illustrates a block diagram of an example computer readable medium in accordance with some example embodiments of the present disclosure.
  • references in the present disclosure to “one embodiment, ” “an embodiment, ” “an example embodiment, ” and the like indicate that the embodiment described may include a particular feature, structure, or characteristic, but it is not necessary that every embodiment includes the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
  • performing a step “in response to A” does not indicate that the step is performed immediately after “A” occurs and one or more intervening steps may be included.
  • circuitry may refer to one or more or all of the following:
  • circuitry also covers an implementation of merely a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and/or firmware.
  • circuitry also covers, for example and if applicable to the particular claim element, a baseband integrated circuit or processor integrated circuit for a mobile device or a similar integrated circuit in server, a cellular network device, or other computing or network device.
  • the term “communication network” refers to a network following any suitable communication standards, such as New Radio (NR) , Long Term Evolution (LTE) , LTE-Advanced (LTE-A) , Wideband Code Division Multiple Access (WCDMA) , High-Speed Packet Access (HSPA) , Narrow Band Internet of Things (NB-IoT) and so on.
  • NR New Radio
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • WCDMA Wideband Code Division Multiple Access
  • HSPA High-Speed Packet Access
  • NB-IoT Narrow Band Internet of Things
  • the communications between a terminal device and a network device in the communication network may be performed according to any suitable generation communication protocols, including, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) , the sixth generation (6G) communication protocols, and/or any other protocols either currently known or to be developed in the future.
  • Embodiments of the present disclosure may be applied in various communication systems. Given the rapid development in communications, there will of course also be future type communication technologies and systems with which the present disclosure may be embodied. It should not be seen as limiting the scope of the present disclosure to only the aforementioned system.
  • the term “network device” refers to a node in a communication network via which a terminal device accesses the network and receives services therefrom.
  • the network device may refer to a base station (BS) or an access point (AP) , for example, a node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , an NR NB (also referred to as a gNB) , a Remote Radio Unit (RRU) , a radio header (RH) , a remote radio head (RRH) , a relay, an Integrated Access and Backhaul (IAB) node, a low power node such as a femto, a pico, a non-terrestrial network (NTN) or non-ground network device such as a satellite network device, a low earth orbit (LEO) satellite and a geosynchronous earth orbit (GEO) satellite, an aircraft network device, and so forth, depending on the applied terminology and technology
  • radio access network (RAN) split architecture comprises a Centralized Unit (CU) and a Distributed Unit (DU) at an IAB donor node.
  • An IAB node comprises a Mobile Terminal (IAB-MT) part that behaves like a UE toward the parent node, and a DU part of an IAB node behaves like a base station toward the next-hop IAB node.
  • IAB-MT Mobile Terminal
  • terminal device refers to any end device that may be capable of wireless communication.
  • a terminal device may also be referred to as a communication device, user equipment (UE) , a Subscriber Station (SS) , a Portable Subscriber Station, a Mobile Station (MS) , or an Access Terminal (AT) .
  • UE user equipment
  • SS Subscriber Station
  • MS Mobile Station
  • AT Access Terminal
  • the terminal device may include, but not limited to, a mobile phone, a cellular phone, a smart phone, voice over IP (VoIP) phones, wireless local loop phones, a tablet, a wearable terminal device, a personal digital assistant (PDA) , portable computers, desktop computer, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback appliances, vehicle-mounted wireless terminal devices, wireless endpoints, mobile stations, laptop-embedded equipment (LEE) , laptop-mounted equipment (LME) , USB dongles, smart devices, wireless customer-premises equipment (CPE) , an Internet of Things (IoT) device, a watch or other wearable, a head-mounted display (HMD) , a vehicle, a drone, a medical device and applications (e.g., remote surgery) , an industrial device and applications (e.g., a robot and/or other wireless devices operating in an industrial and/or an automated processing chain contexts) , a consumer electronics device, a device operating on commercial and/
  • the terminal device may also correspond to a Mobile Termination (MT) part of an IAB node (e.g., a relay node) .
  • MT Mobile Termination
  • IAB node e.g., a relay node
  • the terms “terminal device” , “communication device” , “terminal” , “user equipment” and “UE” may be used interchangeably.
  • the term “resource, ” “transmission resource, ” “resource block, ” “physical resource block” (PRB) , “uplink resource, ” or “downlink resource” may refer to any resource for performing a communication, for example, a communication between a terminal device and a network device, such as a resource in time domain, a resource in frequency domain, a resource in space domain, a resource in code domain, or any other combination of the time, frequency, space and/or code domain resource enabling a communication, and the like.
  • a resource in both frequency domain and time domain will be used as an example of a transmission resource for describing some example embodiments of the present disclosure. It is noted that example embodiments of the present disclosure are equally applicable to other resources in other domains.
  • the transmissions of PRS and/or SRS may be fully or partially dropped in the serving cell and neighboring cell (s) of a UE.
  • UE would not expect to receive, transmit and/or process such signals.
  • PRS may not need to monitor PRSs during the cell DRX inactive periods. This would impact the accuracy and latency of positioning signal-based positioning procedure, as less averaged samples can be considered when calculating the UE location information, while the requested positioning requirements are achieved with a longer delay.
  • LMF Location Management Function
  • the present disclosure provides a positioning solution for cell discontinuous operation.
  • a new type of positioning signal is defined for DL and UL, referred as persistent positioning signal with respect to cell DTX.
  • the transmission of persistent positioning signal is not affected by the cell discontinuous operation.
  • the LMF may configure the radio access network (RAN) nodes and UE with an indication of whether the positional signal to be transmitted/received is the persistent positioning signal. In this way, the accuracy and latency of the positioning procedure can be improved in case of cell DTX/DRX.
  • RAN radio access network
  • FIG. 1 illustrates an example communication environment 100 in which example embodiments of the present disclosure can be implemented.
  • the communication environment 100 may support cell discontinuous operations which comprises at least one of cell DTX or cell DRX.
  • the communication environment 100 may comprise a terminal device 110, and a plurality of network devices 120 to 140, which may communicate with each other.
  • the terminal device 110 may be a UE that is served by the network device 130.
  • the network devices130 and 140 may be RAN node, such as, gNBs, transmission and reception points (TRPs) , and so on, which controls cells 132 and 142, respectively.
  • the cell 132 is a serving cell for the terminal device 110
  • the cell 142 is a neighboring cell for the terminal device 110.
  • FIG. 1 illustrates only one serving cell and one neighboring cell but a plurality of serving cells and/or neighboring cells may exist, respectively.
  • the neighboring cell may be called a non-serving cell in the embodiments.
  • the network device 120 may be a core network (CN) node and implement LMF.
  • LMF 120 is the entity to configure positioning measurement for UEs in the network.
  • the network devices 130 and 140 may operate based on cell DTX/DRX mechanism.
  • the cell DRX/DTX mechanism allows the network devices 130 and 140 to turn off, partially or completely, transmission and reception for user data traffic, control signaling, and reference signals during cell inactive periods. Separate DRX and DTX configurations may be applied by the network devices 130 and 140. In other words, the cell DTX active period may not be aligned with the cell DRX active period.
  • the terminal device 110 may be also referred to as UE 110.
  • the network device 120 may be also referred to as LMF 120.
  • the network device 130 and 140 may be also referred to as gNBs 130 and 140, and cells 132 and 142 may be referred to as serving cell 132 and neighboring cell 142 respectively.
  • Positioning may relate to a process of determining a location of the UE.
  • FIG. 2 illustrates a signaling chart for setup operations 200 of a positioning procedure.
  • the positioning procedure involves signaling exchange between UE and the network nodes for calculating and updating the UE’s location.
  • the positioning procedure may be based on LTE positioning protocol (LPP) .
  • LTP LTE positioning protocol
  • a periodic positioning reporting is required. This allows the positioning procedure to be repeated in certain periodic time intervals, leading to location updates of the UE 208.
  • a 5GC entity i.e., the gateway mobile location center (GMLC) 202 requests (210) location service for positioning UE 208 to the serving AMF 206 for the UE 208.
  • GMLC gateway mobile location center
  • the AMF 206 then transfers (215) the location service request to the LMF 204. Accordingly, the LMF 204 requests (220) the UE capability. As a response, the UE 208 provides (225) its capability to the LMF 204. The capability may relate to what the UE 208 can measure, for example, supported frequencies, bands, positioning techniques, and so on. Additionally, the LMF 204 provides (230) assistance data to the UE 208.
  • the LMF 204 requests (235) location information, such as, a location estimate or positioning measurements from the UE 208.
  • the UE 208 provides (240) the location information to the LMF 204.
  • the UE 208 may be configured to monitor PRSs from the serving cell and at least one non-serving cell, and reports the PRS measurements to the LMF 204.
  • the measurements may be based on Reference Signal Time Difference (RSTD) .
  • RSTD Reference Signal Time Difference
  • the LMF 204 After receiving the location information, the LMF 204 provides (245) a location service response to the AMF 206. Accordingly, the AMF 206 transfer (250) the location service response to the GMLC 202 in step 1a and includes any needed results –e.g., location estimates for the UE.
  • the UE 208 in this case is configured to periodically update the ProvideLocationInformation message, that is, the message that contains the UE measurement report that is used by the network to calculate the UE’s location.
  • the periodicity of reporting is configured by the network depending on the application, such that applications with highly mobile UEs are associated with shorter periodicity values than cases with lower mobility.
  • the UE 208 then periodically provides (255) the location information to the LMF 204, which is then transferred (260, 265) to the GMLC 202 through the AMF 206.
  • the gNBs 130 and 140 may exchange their respective cell DTX/DRX configuration information. Additionally, the gNBs 130 and 140 may provide information about activation/deactivation of its energy saving features in respective cells to the LMF 120.
  • the cell DTX/DRX configuration information has the same meaning with respect to cell discontinuous operation configuration information.
  • the cell discontinuous operation configuration information (e.g., cell DTX/DRX configuration information) may include one or more of the following:
  • a cell DTX/DRX pattern configuration per cell which comprises at least one of a periodicity, a start slot, a start offset, or an on duration period of the cell DTX/DRX pattern;
  • a cell DTX/DRX pattern activation/deactivation indication indicating at least one of an immediate activation/deactivation, an activation/deactivation at a predetermined relative or absolute time, or an activation/deactivation window or period;
  • the deterministic cell DTX inactive period may refer to the cell DTX inactive periods that are persistent or known to occur.
  • the optional cell DTX inactive period may refer to the cell DTX inactive periods that have less than 100 %probability of occurrence.
  • the optional inactive periods may be decided dynamically according to the cell load.
  • the LMF 120 may configure at least one positioning configuration to the terminal device 110, the network devices 130 and 140.
  • the at least one positioning configuration may be generated based on the received cell discontinuous operation configuration information.
  • the positioning configuration may be PRS configuration, SRS configuration and so on.
  • a plurality of PRS transmission occasions may be configured.
  • the PRS is transmitted from the cell in the PRS transmission occasions.
  • the PRS is dropped or omitted in the PRS transmission occasions. Accordingly, the terminal device 110 does not need to measure the PRS based on the PRS configuration during the cell DTX inactive period. It should be understood that in the example embodiments, the PRS transmission occasions from different cells may or may not be aligned.
  • a new type of positioning signal referred to as persistent positioning signal may be defined.
  • the transmission of the persistent positioning signal is not affected by the cell discontinuous operation.
  • PRS compared with the normal PRS as described above (which is also referred to non-persistent PRS) , a persistent PRS will not be dropped and thus to be transmitted during cell DTX inactive period. Accordingly, the terminal device 110 may measure the PRS based on the PRS configuration during the cell DTX inactive period.
  • the serving cell active period and the serving cell inactive period may be configured according to a cell DTX configuration or a cell DRX configuration associated with the serving cell.
  • an indication may be added to the positioning configuration.
  • the indication indicates that the positioning signal is persistent positioning signal or non-persistent positioning signal.
  • the indication may indicate a type of the positioning signal.
  • the indication may be in a form of flag.
  • a first value of the indication may indicate the persistent positioning signal
  • a second different value of the indication may indicate the non-persistent positioning signal.
  • the presence of the indication in the positioning configuration may indicate the persistent positioning signal
  • an absence of the indication may indicate the non-persistent positioning signal.
  • multiple positioning configurations may be configured, which may include one persistent positioning configuration, i.e., to fulfill the location service with higher requirements and one non-persistent positioning configuration for location services with relaxed requirements.
  • the network devices 130 and 140 may also indicate whether it will drop or omit PRS transmissions partially or completely during cell DTX inactive periods or not.
  • the LMF 120 may further indicate that whether the positioning configuration for at least one neighboring cell is to be considered as “conditional persistent” .
  • the LMF 120 may add a conditional persistent indication to the positioning configuration for a neighboring cell to indicate the need for positioning signal transmission during certain windows corresponding to the serving cell DTX active period irrespective of the cell discontinuous operations of the neighboring cell. It is especially the case when there are multiple neighboring cells for the terminal device.
  • Such an indication may be in a form of flag.
  • the presence of the indication in the positioning configuration may indicate that the positioning configuration is considered as “conditional persistent” (i.e., PRSs are transmitted during the serving cell DTX active period) .
  • the absence of the indication in the positioning configuration may indicate that the positioning configuration is considered as “non-persistent” .
  • FIG. 3 illustrates a schematic diagram of PRS transmission occasions 300 monitored by a UE according to some example embodiments of the present disclosure.
  • the UE is configured for monitoring PRS transmission occasions from the serving cell, and two neighboring cells 1 and 2, where solid arrows represent persistent PRS transmissions that are transmitted independent of serving cell DTX state, dotted arrows represent non-persistent PRS transmissions that are dropped if they occur during the serving cell DTX inactive period, and the dash dotted arrows represent conditional persistent PRS transmissions that are transmitted only during the serving cell DTX active period.
  • PRS is used in case of DL positioning
  • SRS is used in case of UL positioning
  • the above improvements for PRS and DL positioning scenario with cell DTX enabled are also applicable to SRS and UL positioning scenario with cell DRX enabled. Therefore, similar configurations and operations will not be reoperated.
  • operations described in connection with a terminal device may be implemented at a network device or other device, and operations described in connection with a network device may be implemented at a terminal device or other device.
  • a link from the network device 130 to the terminal device 110 is referred to as a downlink (DL)
  • a link from the terminal device 110 to the network device 130 is referred to as an uplink (UL)
  • the network device 130 is a transmitting (TX) device (or a transmitter) and the terminal device 110 is a receiving (RX) device (or a receiver)
  • the terminal device 110 is a TX device (or a transmitter) and the network device 130 is a RX device (or a receiver) .
  • the communication network 100 may include any suitable number of apparatuses configured to implementing example embodiments of the present disclosure. Although not shown, it would be appreciated that one or more additional apparatuses and connections may be deployed in the communication network 100.
  • Communications in the communication environment 100 may be implemented according to any proper communication protocol (s) , comprising, but not limited to, cellular communication protocols of the first generation (1G) , the second generation (2G) , the third generation (3G) , the fourth generation (4G) , the fifth generation (5G) , the sixth generation (6G) , and the like, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and/or any other protocols currently known or to be developed in the future.
  • s cellular communication protocols of the first generation (1G) , the second generation (2G) , the third generation (3G) , the fourth generation (4G) , the fifth generation (5G) , the sixth generation (6G) , and the like
  • wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and/or any other protocols currently known or to be developed in the future.
  • the communication may utilize any proper wireless communication technology, comprising but not limited to: Code Division Multiple Access (CDMA) , Frequency Division Multiple Access (FDMA) , Time Division Multiple Access (TDMA) , Frequency Division Duplex (FDD) , Time Division Duplex (TDD) , Multiple-Input Multiple-Output (MIMO) , Orthogonal Frequency Division Multiple (OFDM) , Discrete Fourier Transform spread OFDM (DFT-s-OFDM) and/or any other technologies currently known or to be developed in the future.
  • CDMA Code Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • MIMO Multiple-Input Multiple-Output
  • OFDM Orthogonal Frequency Division Multiple
  • DFT-s-OFDM Discrete Fourier Transform spread OFDM
  • FIG. 4 illustrates a signaling chart for an example positioning procedure 400 according to some example embodiments of the present disclosure.
  • the positioning procedure 400 involves at least the terminal device 110, and the network devices 120 to 140.
  • FIG. 1 illustrates a signaling chart for an example positioning procedure 400 according to some example embodiments of the present disclosure.
  • the network devices 120 to 140 may exchange location service information, e.g., cell discontinuous operation configuration information of their respective cells.
  • the network device 130 transmits (405) the cell discontinuous operation configuration information associated with the serving cell 132 to the LMF 120.
  • the cell discontinuous operation configuration information may include at least one but not limited to:
  • a cell DTX/DRX pattern configuration per cell which comprises at least one of a periodicity, a start slot, a start offset, or an on duration period of the cell DTX/DRX pattern;
  • a cell DTX/DRX pattern activation/deactivation indication indicating at least one of an immediate activation/deactivation, an activation/deactivation at a predetermined relative or absolute time, or an activation/deactivation window or period;
  • the LMF 120 determines (410) one or more positioning configurations including a first positioning configuration.
  • the first positioning configuration comprises an indication indicating a first type of a positioning signal to be transmitted or received during both serving cell DTX active period and cell DTX inactive periods.
  • the first positioning configuration may configure the PRSs that are transmitted persistently irrespective of cell DTX state or the first positioning configuration may configure SRSs that are received persistently irrespective of cell DRX state.
  • the positioning signal is given as the PRS for illustrative purpose.
  • the positioning signal may be the SRS.
  • the present disclosure is not limited in this regard.
  • the indication may be in a form of flag. If the flag is present, the first positioning configuration may be considered as “persistent” , and in this case, the PRSs are transmitted by cells 132 and 142 and thus monitored by the terminal device 110 during serving cell DTX active periods and serving cell DTX inactive periods. If the flag is not present, the first positioning configuration may be considered as “non-persistent” , and in this case, the PRSs are dropped and thus not monitored by the terminal device 110 during serving cell DTX inactive periods.
  • multiple positioning signal configurations may be configured.
  • one of the multiple positioning signal configurations may be persistent PRS configuration that is used for fulfilling the location service with higher requirements, and the other non-persistent PRS configuration (s) may be used for location services with relaxed requirements.
  • the LMF 120 then transmits (415, 420, 425) the first positioning configuration to the terminal device 110, and network devices 130 and 140.
  • the terminal device 110, and network devices 130 and 140 may verify whether the received PRS configuration indicates persistent or non-persistent PRS type.
  • the serving and neighboring gNBs/TRPs determine that the persistent PRS type is indicated. Then, the serving gNB and neighboring gNB transmit the persistent PRSs as configured by the LMF 120 with respect to the cell discontinuous operation (e.g., cell DTX) when the cell DTX is activated at the serving cell 132. From the perspective of the terminal device 110, it may monitor (430) the persistent PRSs during both the serving cell active and inactive periods.
  • the cell discontinuous operation e.g., cell DTX
  • the network device 130 and 140 transmit (435, 440) persistent PRSs based on the first positioning configuration. Additionally, during the serving cell active period, the network devices 130 and 140 transmit (445, 450) PRSs based on the first positioning configuration.
  • the terminal device 110 and the network device 130 and 140 may verify that the received second positioning configuration indicates non-persistent PRS type. In this case, the network device 130 and 140 may drop the PRS transmissions during the serving cell DTX inactive periods. From the perspective of the terminal device 110, it may not monitor the PRSs during the serving cell DTX inactive periods.
  • the terminal device 110 may transmit location information comprising the PRS measurements to the LMF 120 for positioning calculation purpose.
  • the positioning signal may be the SRS.
  • the terminal device 110 may transmit the persistent SRS to the cells 132 and 142during the cell DRX active and inactive periods. From the perspective of the network, the network devices 130 and 140may monitor the persistent SRS during the serving cell DRX active and inactive periods. Otherwise, if the second positioning configuration that does not comprise the indication is received, the terminal device 110 may transmit the SRS only during the serving cell DRX active period.
  • FIG. 5 illustrates a signaling chart for an example positioning procedure 500 according to some example embodiments of the present disclosure.
  • the positioning procedure 500 involves at least the terminal device 110, and the network devices 120 to 140.
  • the positioning procedure 500 For the purpose of discussion, reference is also made to FIG. 1 to describe the positioning procedure 500.
  • the network devices 120 to 140 may exchange location service information, e.g., cell discontinuous operation configuration information of their respective cells.
  • the network device 130 transmits (505) the cell discontinuous operation configuration information associated with the serving cell 132 to the LMF 120.
  • the LMF 120 determines (510) at least one positioning configuration that comprises an indication indicating a third type of positioning signal to be transmitted from the at least one non-serving cell.
  • the third type of positioning signal may be transmitted within a predetermined time window.
  • the predetermined time window may correspond to the serving cell active period.
  • the positioning signal is given as the PRS for illustrative purpose.
  • the positioning signal may be the SRS.
  • the present disclosure is not limited in this regard.
  • the indication may be in a form of flag. If the flag is present, the at least one positioning configuration may be considered as “conditional persistent” , and in this case, the PRSs are transmitted by the cell 142 during serving cell DTX active periods. This may be based on the exchanged location service information. If the flag is not present, the at least one positioning configuration may be considered as “non-persistent” , and in this case, the PRSs are dropped and thus not monitored by the terminal device 110 during serving cell DTX inactive periods.
  • multiple positioning signal configurations may be configured.
  • the LMF 120 may configure a first positioning configuration comprising a “persistent” indication indicating the persistent type of first PRS, and a second positioning configuration without “persistent” indication indicating the non-persistent type of second PRS for the network device 130.
  • the LMF 120 may configure the first positioning configuration comprising “persistent” indication indicating the persistent type of first PRS and the second positioning configuration with the conditional “persistent” indication indicating the conditional persistent type of the second PRS for the network device 140.
  • the LMF 120 then transmits (515, 520, 525) the at least one positioning configuration to the terminal device 110, and network devices 130 and 140.
  • the terminal device 110 and the network device 130 may verify whether the received PRS configuration indicates persistent or non-persistent PRS type. Additionally, the network device 140 may verify whether the received PRS configuration indicates a conditional persistent or non-persistent PRS type.
  • the serving cell/TRP When serving cell DTX is configured and activated, the serving cell/TRP continues to transmit (and the UE continue to monitor) persistent PRS as configured during the inactive period.
  • the neighboring cells/TRPs transmit conditional persistent PRS only during the serving cell DTX active period and neighboring cell DTX inactive period. For example, referring back to FIG. 3, the conditional persistent PRS that is configured to the neighboring cell 1 is transmitted during the serving cell DTX active period and the cell DTX inactive period of the neighboring cell 1.
  • the serving and neighboring gNBs/TRPs may transmit the persistent PRSs as configured by the LMF 120 when the cell discontinuous operation (e.g., cell DTX) is activated at the serving cell 132. From the perspective of the terminal device 110, it may monitor (530) the persistent PRSs during both the serving cell active and inactive periods.
  • the cell discontinuous operation e.g., cell DTX
  • the network device 130 and 140 transmit (535, 540) first PRSs having the persistent type based on the first positioning configuration.
  • the network device 130 and 140 transmit (545, 550) the first PRSs having the persistent type based on the first positioning configuration.
  • the network device 130 and 140 also transmit (555, 560) the second PRSs having the non-persistent type or conditional persistent type based on the second positioning configuration.
  • the terminal device 110 may transmit location information comprising the PRS measurements to the LMF 120 for positioning purpose.
  • the LMF is able to suggest, for each gNB/TRP node, adequate cell DTX/DRX pattern configuration (s) that would satisfy one or more positioning requirements. In this case, it is up to the gNB/TRP nodes whether to confirm and to activate the suggested cell DTX/DRX pattern or not.
  • FIG. 6 illustrates a signaling chart for an example positioning procedure 600 according to some example embodiments of the present disclosure.
  • the positioning procedure 600 involves the GMLC 602, AMF 604, a RAN node 606, LMF 120 and UE 110 as shown in FIG. 1.
  • the RAN node 606 may represent more than one gNBs, such as the network devices 130 and 140 as shown in FIG. 1.
  • the operations 610 to 650 are similar to operations 210 to 250 as described in FIG. 2, thus they are not repeated here.
  • the RAN node 606 may provide (655) the cell discontinuous operation configuration information.
  • the cell discontinuous operation configuration information may comprise cell DTX/DRX patterns per cell, a cell DTX/DRX pattern activation/deactivation indication and a transmission status of a positioning signal with respect to cell DTX activation status.
  • the LMF 120 may determine a candidate cell DTX/DRX pattern from the plurality of cell DTX/DRX patterns based on the cell discontinuous operation configuration information and a requirement of the location service. Accordingly, the LMF 120 may provide (660) information on the candidate cell DTX/DRX pattern as a suggestion of an adequate cell DTX/DRX pattern configuration that satisfies the requirement on the location service.
  • the suggested cell DTX/DRX pattern configuration may be sufficiently aligned between NG-RAN nodes involved in the positioning procedure 600, i.e., if the UE 110 is configured to monitor PRS from multiple cells controlled by multiple gNBs, the PRS transmissions occasions from the corresponding cells shall be aligned or at minimum close in time in order to ensure an accurate location calculation.
  • the RAN node 606 may transmit (665) a confirmation of activation of the candidate cell discontinuous operation configuration to the LMF 120. Accordingly, the LMF 120 may prepare (670) at least positioning configuration for the RAN node 606 based on the confirmed cell DTX/DRX pattern configuration.
  • a persistent positioning configuration for PRS and/or SRS is enabled, which is not affected by the cell discontinuous operation configuration.
  • a persistent PRS is to be transmitted during serving cell DTX inactive period, while the persistent SRS is to be transmitted during serving cell DRX inactive period.
  • the LMF provides the positioning configuration comprising an indication of a type of the positioning signal to both the gNBs/TRPs and the UE.
  • the UE is aware of cell DTX/DRX patterns from the serving cell only (not from the neighboring cells) and whether PRS and/or SRS are dropped, and this can be provided by radio resource control (RRC) configuration. In this way, the positioning procedure can be flexibly and dynamically configured to satisfy different requirements on the location service.
  • RRC radio resource control
  • FIG. 7 shows a flowchart of an example method 700 implemented at an apparatus in accordance with some example embodiments of the present disclosure. For the purpose of discussion, the method 700 will be described from the perspective of the terminal device 110 in FIG. 1.
  • the apparatus receives a first positioning configuration comprising an indication indicating a first type of a positioning signal to be communicated during both a serving cell active and inactive periods.
  • the apparatus communicates, based on the first positioning configuration, at least one first positioning signal having the first type with at least one of serving cell or non-serving cell during the cell active and inactive periods.
  • the meaning of the communication includes at least one of a transmission or a reception.
  • the apparatus receives, based on the first positioning configuration, at least one first positioning signal having the first type from at least one of serving cell or non-serving cell during the cell active and inactive periods.
  • the apparatus transmits, based on the first positioning configuration, at least one first positioning signal having the first type to at least one of serving cell or non-serving cell during the cell active and inactive period.
  • the method 700 may further comprise: receiving a second positioning configuration; and receiving, based on the second positioning configuration, at least one second positioning signal having a second type from the at least one of serving cell or non-serving cell during the serving cell active period, when the second positioning configuration does not include the indication; or transmitting, based on the second positioning configuration, at least one second positioning signal having the second type to the at least one of serving cell or non-serving cell during the serving cell active period, when the second positioning configuration does not include the indication.
  • a presence of the indication in the first positioning configuration indicates the first type of positioning signal
  • an absence of the indication in the first positioning configuration indicates a second type of positioning signal
  • the at least one first positioning signal and the at least one second positioning signal received from the at least one of serving cell or non-serving cell are a positioning reference signal for a downlink transmission
  • the at least one first positioning signal and the at least one second positioning signal transmitted to the at least one of serving cell or non-serving cell are sounding reference signal for positioning for an uplink transmission.
  • the serving cell active period and the serving cell inactive period are configured according to a cell discontinuous transmission, DTX, configuration or a cell discontinuous reception, DRX, configuration associated with the serving cell.
  • the apparatus comprises a terminal device, the first positioning configuration and the second positioning configuration are configured by a device for implementing LMF.
  • FIG. 8 illustrates a flowchart of an example method 800 implemented at a first apparatus in accordance with some example embodiments of the present disclosure. For the purpose of discussion, the method 800 will be described from the perspective of the network device 120 in FIG. 1.
  • the first apparatus receives, from a second apparatus controlling a serving cell for a third apparatus, cell discontinuous operation configuration information associated with the serving cell.
  • the first apparatus determines, based on the cell discontinuous operation configuration information, a first positioning configuration comprising an indication indicating a first type of positioning signal to be transmitted during both serving cell active and inactive periods.
  • the first apparatus transmits, to at least the second apparatus, the third apparatus, or a fourth apparatus, the first positioning configuration, the fourth apparatus controlling a non serving cell.
  • the method 800 further comprises: determining, based on the cell discontinuous operation configuration information, a second positioning configuration related to a second type of positioning signal to be transmitted during the serving cell active period; and transmitting, to at least the second apparatus, the third apparatus or the fourth apparatus, the second positioning configuration.
  • a presence of the indication in the first positioning configuration indicates the first type of positioning signal
  • an absence of the indication in the second positioning configuration indicates the second type of positioning signal
  • the cell discontinuous operation configuration comprises at least one of the following:
  • a cell discontinuous transmission or discontinuous reception, DTX/DRX, pattern configuration per cell comprising at least one of a periodicity, a start slot, a start offset, or an on duration period of the cell DTX/DRX pattern;
  • a cell DTX/DRX pattern activation/deactivation indication indicating at least one of an immediate activation/deactivation, an activation/deactivation at a predetermined relative or absolute time, or an activation/deactivation window or period;
  • the first positioning configuration is determined based on a requirement on a location service.
  • a plurality of positioning configurations is determined, and the plurality of positioning configurations comprises at least the first positioning configuration comprising information on the first type of positioning signal and corresponding to a strict requirement on the location service, and a second positioning configuration comprising information on the second type of positioning signal and corresponding to a relaxed requirement on the location service.
  • the at least one cell comprises the serving cell and at least one non-serving cell controlled by a fourth apparatus, and the information further indicates a third type of positioning signal from the at least one non-serving cell, and the third type of positioning signal is transmitted within a predetermined time window.
  • the predetermined time window corresponds to the cell DTX active period associated with the serving cell.
  • a presence of a second indicator in the information indicates the third type of positioning signal from the at least one non-serving cell, and an absence of the second indicator in the information indicates the second type of positioning signal from the at least one non-serving cell.
  • a plurality of positioning configurations is determined, and the plurality of positioning configurations comprises at least a third positioning configuration comprising information indicating the third type of positioning signal associated with the at least one non-serving cell.
  • the method 800 further comprises: receiving, from the third apparatus, location information comprising a measurement of the at least one positioning signal monitored based on the at least one positioning configuration.
  • the first apparatus comprises a device for implementing LMF
  • the second apparatus comprises a first network device
  • the third apparatus comprises a terminal device
  • the fourth apparatus comprises a second network device.
  • FIG. 9 illustrates a flowchart of an example method 900 implemented at a second apparatus in accordance with some example embodiments of the present disclosure.
  • the method 900 will be described from the perspective of the network device 130 in FIG. 1.
  • the second apparatus transmits, to a first apparatus for location management, cell discontinuous operation configuration information associated with a serving cell of the second apparatus.
  • the second apparatus receives, from the first apparatus, a first positioning configuration comprising an indication indicating a first type of positioning signal to be communicated during both serving cell active and inactive periods.
  • the second apparatus communicates, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal having the first type.
  • the communication includes at least one of a transmission or a reception.
  • the second apparatus transmits, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal having the first type.
  • the second apparatus receives, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal having the first type from the third apparatus.
  • the method 900 further comprises: receiving a second positioning configuration; and transmitting, based on the second positioning configuration and the cell discontinuous operation configuration information, at least one second positioning signal having a second type during the serving cell active period, when the second positioning configuration does not include the indication, or receiving, based on the second positioning configuration and the cell discontinuous operation configuration information, at least one second positioning signal having the second type during the serving cell active period, when the second positioning configuration does not include the indication.
  • the cell discontinuous operation configuration information comprises at least one of the following:
  • a cell discontinuous transmission or discontinuous reception, DTX/DRX, pattern configuration per cell comprising at least one of a periodicity, a start slot, a start offset, or an on duration period of the cell DTX/DRX pattern;
  • a cell DTX/DRX pattern activation/deactivation indication indicating at least one of an immediate activation/deactivation, an activation/deactivation at a predetermined relative or absolute time, or an activation/deactivation window or period;
  • a presence of the indication in the first or second positioning configuration indicates the first type of positioning signal
  • an absence of the indication in the first or second positioning configuration indicates the second type of positioning signal
  • the transmitted at least one first positioning signal comprises a positioning reference signal
  • the received at least one first positioning signal comprises a sounding reference signal for positioning.
  • the first apparatus comprises a device for implementing LMF
  • the second apparatus comprises a first network device
  • the third apparatus comprises a terminal device.
  • FIG. 10 illustrates a flowchart of an example method 1000 implemented at a fourth apparatus in accordance with some example embodiments of the present disclosure.
  • the method 1000 will be described from the perspective of the network device 140 in FIG. 1.
  • the fourth apparatus exchanges cell discontinuous operation configuration information with a second apparatus controlling a serving cell for a third apparatus, the fourth apparatus controlling a non-serving cell for the third apparatus.
  • the fourth apparatus receives, from a first apparatus for location management, a first positioning configuration comprising an indication indicating at least one of a first type of positioning signal to be transmitted during both serving cell active and inactive periods.
  • the fourth apparatus communicates, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal.
  • the meaning of the communication includes at least one of a transmission or a reception.
  • the fourth apparatus transmits, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal.
  • the fourth apparatus receives, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal.
  • the method 1000 further comprises receiving a second positioning configuration; and transmitting, based on the second positioning configuration and the cell discontinuous operation configuration information, at least one second positioning signal having a second type during the serving cell active period, when the second positioning configuration does not include the indication, or receiving, based on the second positioning configuration and the cell discontinuous operation configuration information, at least one second positioning signal having the second type during the serving cell active period, when the second positioning configuration does not include the indication.
  • a presence of the indication in the first or second positioning configuration indicates the first type of positioning signal
  • an absence of the indication in the first or second positioning configuration indicates the second type of positioning signal
  • the cell discontinuous operation configuration information comprises a cell discontinuous transmission or discontinuous reception, DTX/DRX, pattern configuration of the fourth apparatus.
  • a first positioning configuration is configured based on a requirement on a location service.
  • the transmitted at least one first positioning signal comprises a positioning reference signal
  • the received at least one first positioning signal comprises a sounding reference signal for positioning.
  • the first apparatus comprises a device for implementing LMF
  • a second apparatus comprises a first network device
  • a third apparatus comprises a terminal device
  • the fourth apparatus comprises a second network device.
  • FIG. 11 illustrates a flowchart of an example method 1100 implemented at a fifth apparatus in accordance with some example embodiments of the present disclosure. For the purpose of discussion, the method 1100 will be described from the perspective of the network device 120 in FIG. 1.
  • the fifth apparatus receives, from a group of sixth apparatuses associated with a location service, cell discontinuous operation configuration information comprising a plurality of cell DTX/DRX patterns per cell, a cell DTX/DRX pattern activation/deactivation indication and a transmission status of a positioning signal with respect to cell DTX activation status.
  • the fifth apparatus determines, based on the cell discontinuous operation configuration information and a requirement on the location service, a candidate cell DTX/DRX pattern from the plurality of cell DTX/DRX patterns.
  • the fifth apparatus transmits, to the group of sixth apparatuses, information on the candidate cell DTX/DRX pattern.
  • the transmission status of the positioning signal with respect to the cell DTX activation status indicates whether the positioning signal is to be transmitted during a cell DTX inactive period.
  • the candidate cell DTX/DRX pattern configuration comprises a plurality of positioning signal transmission occasions from respective cells provided by the group of sixth apparatuses aligned with a time gap that is below a threshold.
  • the method 1100 further comprises: receiving, from a respective one of the group of sixth apparatuses, a confirmation of activation of the candidate cell discontinuous operation configuration; and determining, based on the candidate cell DTX/DRX pattern configuration, at least one positioning configuration for the group of sixth apparatuses.
  • the positioning signal comprises one of a PRS or an SRS.
  • the fifth apparatus comprises a device for implementing LMF
  • the group of sixth apparatuses comprises a group of network devices.
  • FIG. 12 illustrates a flowchart of an example method 1200 implemented at a sixth apparatus in accordance with some example embodiments of the present disclosure. For the purpose of discussion, the method 1200 will be described from the perspective of the network device 130 in FIG. 1.
  • the sixth apparatus transmits, to a fifth apparatus for location management, cell discontinuous operation configuration information comprising a cell DTX/DRX pattern of a cell controlling by the sixth apparatus, a cell DTX/DRX pattern activation/deactivation indication and a transmission status of a positioning signal with respect to cell DTX activation status.
  • the sixth apparatus receives, from the fifth apparatus, information on a candidate cell DTX/DRX pattern.
  • the transmission status of a positioning signal with respect to cell DTX activation indicates whether the positioning signal is to be transmitted during a cell DTX inactive period.
  • the candidate cell DTX/DRX pattern configuration comprises a plurality of positioning signal transmission occasions from respective cells provided by the group of sixth apparatuses aligned with a time gap that is below a threshold.
  • the method 1200 further comprises: transmit, to the fifth apparatus, a confirmation of activation of the candidate cell discontinuous operation configuration.
  • the positioning signal comprises one of a PRS or an SRS.
  • the fifth apparatus comprises a device for implementing LMF
  • the sixth apparatus comprises a network device.
  • an apparatus capable of performing any of the method 700 may comprise means for performing the respective operations of the method 700.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • the apparatus may be implemented as or included in the terminal device 110 in FIG. 1.
  • the apparatus comprises means for receiving a first positioning configuration comprising an indication indicating a first type of a positioning signal to be communicated during both serving cell active and inactive periods; and means for receiving, based on the first positioning configuration, at least one first positioning signal having the first type from at least one of serving cell or non-serving cell during the cell active and inactive periods; or means for transmitting, based on the first positioning configuration, at least one first positioning signal having the first type to at least one of serving cell or non-serving cell during the cell active and inactive period.
  • the apparatus further comprises: means for receiving a second positioning configuration; and receiving, based on the second positioning configuration, at least one second positioning signal having a second type from the at least one of serving cell or non-serving cell during a serving cell active period, when the second positioning configuration does not include the indication, or transmitting, based on the second positioning configuration, at least one second positioning signal having the second type to the at least one of serving cell or non-serving cell during the serving cell active period, when the second positioning configuration does not include the indication.
  • a presence of the indication in the first positioning configuration indicates the first type of positioning signal
  • an absence of the indication in the first positioning configuration indicates a second type of positioning signal
  • the at least one first positioning signal and the at least one second positioning signal received from the at least one of serving cell or non-serving cell are positioning reference signal for a downlink transmission, or the at least one first positioning signal and the at least one second positioning signal transmitted to the at least one of serving cell or non-serving cell are sounding reference signal for positioning for an uplink transmission.
  • the serving cell active period and the serving cell inactive period are configured according to a cell discontinuous transmission, DTX, configuration or a cell discontinuous reception, DRX, configuration associated with the serving cell.
  • the apparatus comprises a terminal device, the first positioning configuration and the second positioning configuration are configured by a device for implementing location management function, LMF.
  • the apparatus further comprises means for performing other operations in some example embodiments of the method 700 or the terminal device110.
  • the means comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the performance of the apparatus.
  • a first apparatus capable of performing any of the method 800 may comprise means for performing the respective operations of the method 800.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • the first apparatus may be implemented as or included in the network device 120 in FIG. 1.
  • the first apparatus comprises means for receiving, from a second apparatus controlling a serving cell for a third apparatus, cell discontinuous operation configuration information associated with the serving cell; means for determining, based on the cell discontinuous operation configuration information, a first positioning configuration comprising an indication indicating a first type of positioning signal to be transmitted during both serving cell active and inactive periods; and means for transmitting, to at least the second apparatus, the third apparatus, or a fourth apparatus, the first positioning configuration, the fourth apparatus controlling a non serving cell.
  • the first apparatus further comprises: means for determining, based on the cell discontinuous operation configuration information, a second positioning configuration related to a second type of positioning signal to be transmitted during the serving cell active period; and means for transmitting, to at least the second apparatus, the third apparatus or the fourth apparatus, the second positioning configuration.
  • a presence of the indication in the first positioning configuration indicates the first type of positioning signal
  • an absence of the indication in the second positioning configuration indicates the second type of positioning signal
  • the cell discontinuous operation configuration comprises at least one of the following:
  • a cell discontinuous transmission or discontinuous reception, DTX/DRX, pattern configuration per cell comprising at least one of a periodicity, a start slot, a start offset, or an on duration period of the cell DTX/DRX pattern;
  • a cell DTX/DRX pattern activation/deactivation indication indicating at least one of an immediate activation/deactivation, an activation/deactivation at a predetermined relative or absolute time, or an activation/deactivation window or period;
  • the first apparatus further comprises: means for receiving, from the third apparatus, location information comprising a measurement of the at least one positioning signal monitored based on the at least one positioning configuration.
  • the first apparatus comprises a device for implementing LMF
  • the second apparatus comprises a first network device
  • the third apparatus comprises a terminal device
  • the fourth apparatus comprises a second network device.
  • the first apparatus further comprises means for performing other operations in some example embodiments of the method 800 or the network device 120.
  • the means comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the performance of the first apparatus.
  • a second apparatus capable of performing any of the method 900 may comprise means for performing the respective operations of the method 600.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • the second apparatus may be implemented as or included in the network device 130 in FIG. 1.
  • the second apparatus comprises means for transmitting, to a first apparatus for location management, cell discontinuous operation configuration information associated with a serving cell of the second apparatus; means for receiving, from the first apparatus, a first positioning configuration comprising an indication indicating a first type of positioning signal to be communicated during both serving cell active and inactive periods; and means for transmitting, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal having the first type; or means for receiving, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal having the first type from the third apparatus.
  • the second apparatus further comprises means for receiving a second positioning configuration; and means for transmitting, based on the second positioning configuration and the cell discontinuous operation configuration information, at least one second positioning signal having a second type during the serving cell active period, when the second positioning configuration does not include the indication, or means for receive, based on the second positioning configuration and the cell discontinuous operation configuration information, at least one second positioning signal having the second type during the serving cell active period, when the second positioning configuration does not include the indication.
  • a presence of the indication in the first or second positioning configuration indicates the first type of positioning signal
  • an absence of the indication in the first or second positioning configuration indicates the second type of positioning signal
  • the cell discontinuous operation configuration information comprises at least one of the following:
  • a cell discontinuous transmission or discontinuous reception, DTX/DRX, pattern configuration per cell comprising at least one of a periodicity, a start slot, a start offset, or an on duration period of the cell DTX/DRX pattern;
  • a cell DTX/DRX pattern activation/deactivation indication indicating at least one of an immediate activation/deactivation, an activation/deactivation at a predetermined relative or absolute time, or an activation/deactivation window or period;
  • the transmitted at least one first positioning signal comprises a positioning reference signal
  • the received at least one first positioning signal comprises a sounding reference signal
  • the first apparatus comprises a device for implementing LMF
  • the second apparatus comprises a first network device
  • the third apparatus comprises a terminal device.
  • the second apparatus further comprises means for performing other operations in some example embodiments of the method 900 or the network device 130.
  • the means comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the performance of the second apparatus.
  • a fourth apparatus capable of performing any of the method 1000 may comprise means for performing the respective operations of the method 1000.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • the fourth apparatus may be implemented as or included in the network device 140 in FIG. 1.
  • the fourth apparatus comprises means for exchanging cell discontinuous operation configuration information with a second apparatus controlling a serving cell for a third apparatus, the fourth apparatus controlling a non-serving cell for the third apparatus; means for receiving, from a first apparatus for location management, a first positioning configuration comprising an indication indicating at least one of a first type of positioning signal to be transmitted during both serving cell active and inactive periods; and means for transmitting, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal; or means for receiving, based on the first positioning configuration and the cell discontinuous operation configuration information, at least one first positioning signal.
  • the fourth apparatus further comprises means for receiving a second positioning configuration; and means for transmitting, based on the second positioning configuration and the cell discontinuous operation configuration information, at least one second positioning signal having a second type during the serving cell active period, when the second positioning configuration does not include the indication, or means for receiving, based on the second positioning configuration and the cell discontinuous operation configuration information, at least one second positioning signal having the second type during the serving cell active period, when the second positioning configuration does not include the indication.
  • the cell discontinuous operation configuration information comprises a cell discontinuous transmission or discontinuous reception, DTX/DRX, pattern configuration of the fourth apparatus.
  • a first positioning configuration is configured based on a requirement on a location service.
  • the transmitted at least one first positioning signal comprises a positioning reference signal
  • the received at least one first positioning signal comprises a sounding reference signal
  • the first apparatus comprises a device for implementing LMF
  • a second apparatus comprises a first network device
  • a third apparatus comprises a terminal device
  • the fourth apparatus comprises a second network device.
  • the fourth apparatus further comprises means for performing other operations in some example embodiments of the method 1000 or the network device 140.
  • the means comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the performance of the fourth apparatus.
  • a fifth apparatus capable of performing any of the method 1000 may comprise means for performing the respective operations of the method 1100.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • the fifth apparatus may be implemented as or included in the network device 120 in FIG. 1.
  • the fifth apparatus comprises means for receiving, from a group of sixth apparatuses associated with a location service, cell discontinuous operation configuration information comprising a plurality of cell DTX/DRX patterns per cell, a cell DTX/DRX pattern activation/deactivation indication and a transmission status of a positioning signal with respect to cell DTX activation status; means for determining, based on the cell discontinuous operation configuration information and a requirement on the location service, a candidate cell DTX/DRX pattern from the plurality of cell DTX/DRX patterns; and means for transmitting, to the group of sixth apparatuses, information on the candidate cell DTX/DRX pattern.
  • the transmission status of the positioning signal with respect to the cell DTX activation status indicates whether the positioning signal is to be transmitted during a cell DTX inactive period.
  • the candidate cell DTX/DRX pattern configuration comprises a plurality of positioning signal transmission occasions from respective cells provided by the group of sixth apparatuses aligned with a time gap that is below a threshold.
  • the fifth apparatus further comprises: means for receiving, from a respective one of the group of sixth apparatuses, a confirmation of activation of the candidate cell discontinuous operation configuration; and means for determining, based on the candidate cell DTX/DRX pattern configuration, at least one positioning configuration for the group of sixth apparatuses.
  • the positioning signal comprises one of a PRS or an SRS.
  • the fifth apparatus comprises a device for implementing LMF
  • the group of sixth apparatuses comprises a group of network devices.
  • the fifth apparatus further comprises means for performing other operations in some example embodiments of the method 1100 or the network device 120.
  • the means comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the performance of the fifth apparatus.
  • a sixth apparatus capable of performing any of the method 1200 may comprise means for performing the respective operations of the method 1100.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • the sixth apparatus may be implemented as or included in the network device 130 in FIG. 1.
  • the sixth apparatus comprises means for means for transmitting, to a fifth apparatus for location management, cell discontinuous operation configuration information comprising a cell DTX/DRX pattern of a cell controlling by the sixth apparatus, a cell DTX/DRX pattern activation/deactivation indication and a transmission status of a positioning signal with respect to cell DTX activation status; and means for receiving, from the fifth apparatus, information on a candidate cell DTX/DRX pattern.
  • the transmission status of a positioning signal with respect to cell DTX activation indicates whether the positioning signal is to be transmitted during a cell DTX inactive period.
  • the candidate cell DTX/DRX pattern configuration comprises a plurality of positioning signal transmission occasions from respective cells provided by the group of sixth apparatuses aligned with a time gap that is below a threshold.
  • the sixth apparatus further comprises means for transmitting, to the fifth apparatus, a confirmation of activation of the candidate cell discontinuous operation configuration.
  • the positioning signal comprises one of a PRS or an SRS for positioning.
  • the fifth apparatus comprises a device for implementing LMF
  • the sixth apparatus comprises a network device.
  • the sixth apparatus further comprises means for performing other operations in some example embodiments of the method 1200 or the network device 130.
  • the means comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the performance of the sixth apparatus.
  • FIG. 13 is a simplified block diagram of a device 1300 that is suitable for implementing example embodiments of the present disclosure.
  • the device 1300 may be provided to implement a communication device, for example, the terminal device 110, or any of the network devices 120 to 140 as shown in FIG. 1.
  • the device 1300 includes one or more processors 1310, one or more memories 1320 coupled to the processor 1310, and one or more communication modules 1340 coupled to the processor 1310.
  • the communication module 1340 is for bidirectional communications.
  • the communication module 1340 has one or more communication interfaces to facilitate communication with one or more other modules or devices.
  • the communication interfaces may represent any interface that is necessary for communication with other network elements.
  • the communication module 1340 may include at least one antenna.
  • the processor 1310 may be of any type suitable to the local technical network and may include one or more of the following: general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples.
  • the device 1300 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
  • the memory 1320 may include one or more non-volatile memories and one or more volatile memories.
  • the non-volatile memories include, but are not limited to, a Read Only Memory (ROM) 1324, an electrically programmable read only memory (EPROM) , a flash memory, a hard disk, a compact disc (CD) , a digital video disk (DVD) , an optical disk, a laser disk, and other magnetic storage and/or optical storage.
  • Examples of the volatile memories include, but are not limited to, a random access memory (RAM) 1322 and other volatile memories that will not last in the power-down duration.
  • a computer program 1330 includes computer executable instructions that are executed by the associated processor 1310.
  • the instructions of the program 1330 may include instructions for performing operations/acts of some example embodiments of the present disclosure.
  • the program 1330 may be stored in the memory, e.g., the ROM 1324.
  • the processor 1310 may perform any suitable actions and processing by loading the program 1330 into the RAM 1322.
  • the example embodiments of the present disclosure may be implemented by means of the program 1330 so that the device 1300 may perform any process of the disclosure as discussed with reference to FIG. 2 to FIG. 12.
  • the example embodiments of the present disclosure may also be implemented by hardware or by a combination of software and hardware.
  • the program 1330 may be tangibly contained in a computer readable medium which may be included in the device 1300 (such as in the memory 1320) or other storage devices that are accessible by the device 1300.
  • the device 1300 may load the program 1330 from the computer readable medium to the RAM 1322 for execution.
  • the computer readable medium may include any types of non-transitory storage medium, such as ROM, EPROM, a flash memory, a hard disk, CD, DVD, and the like.
  • the term “non-transitory, ” as used herein, is a limitation of the medium itself (i.e., tangible, not a signal) as opposed to a limitation on data storage persistency (e.g., RAM vs. ROM) .
  • FIG. 14 shows an example of the computer readable medium 1400 which may be in form of CD, DVD or other optical storage disk.
  • the computer readable medium 1400 has the program 1330 stored thereon.
  • various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, and other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. Although various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representations, it is to be understood that the block, apparatus, system, technique or method described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
  • Some example embodiments of the present disclosure also provide at least one computer program product tangibly stored on a computer readable medium, such as a non-transitory computer readable medium.
  • the computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target physical or virtual processor, to carry out any of the methods as described above.
  • program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types.
  • the functionality of the program modules may be combined or split between program modules as desired in various embodiments.
  • Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
  • Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages.
  • the program code may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program code, when executed by the processor or controller, cause the functions/operations specified in the flowcharts and/or block diagrams to be implemented.
  • the program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
  • the computer program code or related data may be carried by any suitable carrier to enable the device, apparatus or processor to perform various processes and operations as described above.
  • Examples of the carrier include a signal, computer readable medium, and the like.
  • the computer readable medium may be a computer readable signal medium or a computer readable storage medium.
  • a computer readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of the computer readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM) , a read-only memory (ROM) , an erasable programmable read-only memory (EPROM or Flash memory) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

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Abstract

Des modes de réalisation de la présente divulgation concernent des appareils, des procédés et des supports de stockage lisibles par ordinateur pour des améliorations de positionnement. Un appareil reçoit une première configuration de positionnement comprenant une indication indiquant un premier type d'un signal de positionnement à communiquer pendant les deux périodes active et inactive de cellule de desserte. L'appareil reçoit, sur la base de la première configuration de positionnement, au moins un premier signal de positionnement ayant le premier type en provenance d'une cellule de desserte et/ou d'une cellule de non-desserte pendant les périodes active et inactive de cellule. En variante, l'appareil émet, sur la base de la première configuration de positionnement, au moins un premier signal de positionnement ayant le premier type à une cellule de desserte et/ou une cellule de non-desserte pendant les périodes active et inactive de cellule.
PCT/CN2023/112770 2023-08-11 2023-08-11 Améliorations de positionnement avec dtx/drx de cellule Pending WO2025035334A1 (fr)

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