Search

CN-121986524-A - User equipment and network entity

CN121986524ACN 121986524 ACN121986524 ACN 121986524ACN-121986524-A

Abstract

A User Equipment (UE) in a wireless network, the UE comprising a transceiver, wherein the transceiver is configured to receive one or more first configurations from a network entity (e.g. TRP or LMF) in the wireless network, the one or more first configurations comprising parameters for reference signals to be transmitted by the user equipment in a particular RRC state (e.g. rrc_inactive) to enable positioning determination, receive one or more second configurations from the network entity (e.g. gNB), the one or more second configurations comprising parameters describing an active phase and a dormant phase of the UE activity cycle (e.g. DRX cycle or eDRX cycle), wherein during the active phase the user equipment is configured to receive one or more signaling messages from the network entity, and wherein during the dormant phase the UE is temporarily not reachable (e.g. by paging), transmit the reference signals according to one of the one or more first configurations and/or to consider one of the one or more second configurations (defining DRX cycle).

Inventors

  • Birendra Guimir
  • Mohammed Alavikh
  • Thomas van der gren

Assignees

  • 弗劳恩霍夫应用研究促进协会

Dates

Publication Date
20260505
Application Date
20240801
Priority Date
20230804

Claims (20)

  1. 1. A user equipment, UE, (14,202,204,206,208,210,212) in a wireless network, the user equipment comprising a transceiver, wherein the transceiver is configured to: -receiving one or more first configurations from a network entity of the wireless network, such as TRP (12, 12a,12b,16a,16 b) or LMF (18), the one or more first configurations comprising parameters of reference signals to be transmitted by the user equipment; -receiving one or more second configurations from the network entity (e.g. gNB (16 a-c)), the one or more second configurations comprising parameters describing an active phase and a sleep phase of a UE active period (e.g. DRX period or eDRX period), wherein during the active phase the user equipment is configured to receive one or more signaling messages from the network entity, and wherein during the sleep phase the UE (14,202,204,206,208,210,212) is temporarily unreachable (e.g. by paging); -transmitting the reference signal according to one of the one or more first configurations and taking into account one of the one or more second configurations (defining the DRX cycle).
  2. 2. The user equipment according to claim 1, wherein the user equipment selects one of the one or more first configurations and/or one of the one or more second configurations according to selection criteria or selection criteria signaled to the user equipment.
  3. 3. The user equipment of claim 2, wherein the selection criteria is based on at least one of: -a validity area (configured to the UE (14,202,204,206,208,210,212)); -a validity time (configured to the UE (14,202,204,206,208,210,212)); -event or event type (e.g. triggered by higher layers in the protocol stack of the UE (14,202,204,206,208,210,212); -periodicity of positioning; -timing advance and/or predictability, in particular whether the UE (14,202,204,206,208,210,212) can determine a timing advance or whether the UE (14,202,204,206,208,210,212) can verify a previously determined timing advance; -whether the UE (14,202,204,206,208,210,212) is allowed to operate in MICO mode by the network (10,100,102); -a Radio Resource Control (RRC) state of the UE (14,202,204,206,208,210,212).
  4. 4. The user equipment according to one of the preceding claims, wherein the reference signal transmitted by the UE (14,202,204,206,208,210,212) is a sounding reference signal for positioning purposes, and/or wherein the RRC state is an rrc_inactive state.
  5. 5. The user equipment according to one of the preceding claims, wherein the UE (14,202,204,206,208,210,212) is configured with at least one feedback resource, the transceiver is configured to monitor the at least one feedback resource to receive feedback from at least one network entity, or Wherein the UE (14,202,204,206,208,210,212) is configured with at least one feedback resource, the transceiver is configured to monitor the at least one feedback resource to receive feedback from at least one network entity, and wherein the feedback indicates whether a positioning procedure has been successfully completed and/or whether a measurement by at least one TRP (12, 12a,12b,16a,16 b) meets a required quality.
  6. 6. The user equipment of claim 5, wherein the feedback resources comprise configured resources or groups of resources within a configured window, wherein the user equipment is configured to take action depending on a type of feedback received during the feedback resources.
  7. 7. The user equipment according to one of the preceding claims, wherein the user equipment is configured to enter a sleep state if positive feedback is received during a feedback resource, and/or Wherein the UE (14,202,204,206,208,210,212) is configured to initiate one or more recovery procedures to enable the network entity to determine the location of the UE, and/or Wherein the transceiver is configured to transmit the reference signal during an active phase of the UE active period and enter a sleep phase of the UE active period in accordance with a sleep criterion.
  8. 8. The user equipment of claim 7, wherein the sleep criteria is met when feedback is received, or when feedback is received and the feedback is positive feedback.
  9. 9. The user equipment of claim 8, wherein the feedback indicates one of: -incorrect or correct reception of the reference signal and/or message at the TRP (12, 12a,12b,16a,16 b) or at the further UE (14,202,204,206,208,210,212), for example using ACK/NACK; -incorrect or correct reception of the reference signals and/or messages at TRP (12, 12a,12b,16a,16 b) or further UE (14,202,204,206,208,210,212), and insufficient or sufficient information extracted from the reference signals and/or messages to perform measurements or positioning determination; -insufficient or sufficient information extracted by LMF (18) from the reference signals and/or messages to perform measurements or positioning determinations; -the measurement or positioning determination performed by the LMF (18) fails or succeeds; Or wherein positive feedback indicates one of: -correct reception of the reference signal and/or message at the TRP (12, 12a,12b,16a,16 b) or at the further UE (14,202,204,206,208,210,212), e.g. using ACK/NACK; -correct reception of the reference signal and/or message at the TRP (12, 12a,12b,16a,16 b) or further UE (14,202,204,206,208,210,212), and sufficient information extracted from the reference signal and/or message to perform measurement or positioning determination; -information extracted from the reference signals and/or messages by LMF (18) is sufficient to perform measurements or positioning determination; -the measurement or positioning determination performed by the LMF (18) is successful.
  10. 10. The user equipment according to one of claims 8 or 9, wherein the feedback may be any of the following types: -implicit positive feedback, wherein the UE (14,202,204,206,208,210,212) does not receive any feedback, is considered positive feedback; -implicit negative feedback, wherein the UE (14,202,204,206,208,210,212) does not receive any feedback indicating negative feedback; -explicit positive feedback and explicit negative feedback, wherein the UE (14,202,204,206,208,210,212) does not receive any feedback-triggered fallback procedure; -an indication for transmitting a reference signal in a different configuration than the first configuration selected by the UE (14,202,204,206,208,210,212), by providing an identifier indicating one of the configurations, or one of the group of configurations, or by providing a new configuration; an indication for changing a parameter describing the DRX cycle, such as the DRX duration, the active part of the cycle, the sleep part of the cycle, etc.
  11. 11. The user equipment according to any of the preceding claims, wherein the first configuration of reference signals transmitted by the UE (14,202,204,206,208,210,212) is a PRACH signal and the feedback comprises an indication of the configuration of reference signals or a specific configuration of reference signals for pre-configuring to the UE (14,202,204,206,208,210,212), wherein the UE transmits using the configuration provided in the feedback for positioning.
  12. 12. The user equipment of claim 11, wherein the configuration of positioning reference signals to be transmitted in rrc_inactive state is carried by MSG-B or MSG-4 of a random access procedure.
  13. 13. The user equipment according to one of claims 8 to 12, wherein the transceiver is configured to listen for feedback or to listen for feedback over feedback resources and/or to listen for feedback during a feedback window.
  14. 14. The user equipment according to one of claims 8 to 13, wherein the feedback resource occurs after transmission in time.
  15. 15. The user equipment according to one of the claims 6 to 14, wherein feedback resources are used only when the sleep stage of the DRX cycle is greater than a threshold signaled by the network (10,100,102), and/or Wherein the DRX cycle may be a small DRX cycle, a medium DRX cycle, or a large DRX cycle, and wherein the feedback resource is used only for the large DRX cycle.
  16. 16. The user equipment according to one of claims 6 to 15, wherein the feedback resources are one or more of the group comprising: -configuration resources in downlink (e.g. PDCCH/PDSCH) and/or side link (e.g. PSSCH), wherein the configuration resources comprise RRC messages and/or LPP and/or SLPP and/or NAS-DL messages; -MAC-CE transmitted from the gNB (16 a-c) to the UE (14,202,204,206,208,210,212) on the downlink; -MAC-CE transmitted using a small data transmission mechanism; -one or more first configurations of resources indicating time-frequency locations of on-demand reference signals; -resources associated with the one or more first configurations belonging to the reference signal; Configuration of DL-PRS resources, on-demand transmission from a network entity (e.g., in response to a particular event, such as successful receipt of positioning resources).
  17. 17. The user equipment according to one of the preceding claims, wherein the transceiver is configured to perform transmission taking into account validity area information or validity area information comprised in the one or more first configurations or to perform transmission only when the UE (14,202,204,206,208,210,212) is arranged within a validity area according to the validity area information.
  18. 18. The user equipment according to one of the preceding claims, wherein the sleep stage comprises an inactive state or an idle state of the transceiver.
  19. 19. The user equipment according to one of the claims 5 to 18, wherein the DRX cycle is a short DRX cycle or a long DRX cycle, wherein the long DRX cycle is configured with the transmission of the one or more first configurations, and wherein the short DRX cycle is configured such that the active phase contains feedback resources, and/or Wherein the DRX cycle is a short DRX cycle or a long DRX cycle comprising a short DRX cycle, wherein if the feedback resource has a positive acknowledgement, the short cycle ends such that the UE (14,202,204,206,208,210,212) goes to sleep according to the sleep period of the long DRX cycle, or wherein the UE wakes up according to the short cycle to monitor the feedback resource and/or to transmit a reference signal until the positive feedback is received or until a timeout.
  20. 20. The user equipment according to one of the preceding claims, wherein the transceiver is configured to interact with TRP (12, 12a,12b,16a,16 b), LMF (18) or network (10,100,102) to perform a positioning determination, or to perform a recovery procedure, if the transceiver receives negative feedback (NACK) or implicitly receives negative feedback.

Description

User equipment and network entity Technical Field Embodiments of the present invention relate to user equipment, in particular to user equipment involved in positioning determination, network entities such as Transmission Reception Points (TRP) and network entities such as Location Management Functions (LMF). Other embodiments relate to corresponding methods for operating a user equipment, a network entity as a transmission point and a network entity as an LMF. Further embodiments relate to corresponding computer-implemented methods. In general, embodiments of the present invention relate to the field of enhancing positioning reliability and reducing UE power consumption. Background Fig. 10 is a schematic diagram of an example of a terrestrial wireless network 100, as shown in fig. 10 (a), the terrestrial wireless network 100 comprising a core network 102 and one or more radio access networks RAN 1、RAN2、…RANN. Fig. 10 (b) is a schematic diagram of an example of a radio access network RAN n, which may include one or more base stations gNB 1 to gNB 5, each serving a particular area surrounding the base stations, which areas are schematically represented by respective cells 106 1 to 106 5. The base station is provided for users within the serving cell. One or more base stations may serve users in licensed and/or unlicensed frequency bands. The term Base Station (BS) refers to an eNB in a gNB, UMTS/LTE-a Pro, or BS in other mobile communication standards in a 5G network. The user may be a fixed device or a mobile device. Wireless communication systems may also be accessed by mobile or fixed internet of things (IoT) devices that connect to base stations or users. Mobile or stationary devices may include physical devices, ground vehicles (e.g., robots or automobiles), airborne vehicles (e.g., unmanned or Unmanned Aerial Vehicles (UAVs), the latter also referred to as drones), buildings, and other embedded electronic devices, software, sensors, actuators, or the like, as well as network-connected items or devices, such that these devices are capable of collecting and exchanging data through existing network infrastructure. fig. 10 (b) shows an exemplary view of five cells, however, RAN n may include more or fewer such cells, and RAN n may also include only one base station. Fig. 10 (b) shows two user UEs 1 and 2, also referred to as user equipments, which are located in the cell 106 2 and served by the base station gNB 2. Additional user UEs 3 are shown in cell 106 4, served by base station gNB 4. Arrows 108 1、1082 and 108 3 schematically represent uplink/downlink connections for transmitting data from user UEs 1、UE2 and 3 to base station gNB 2、gNB4 or for transmitting data from base station gNB 2、gNB4 to user UE 1、UE2、UE3. This may be done in either the licensed or unlicensed frequency bands. Further, fig. 10 (b) shows two other devices 110 1 and 110 2 (e.g., ioT devices) in cell 106 4, which may be fixed or mobile devices. The device 110 1 accesses the wireless communication system via the base station gNB 4 to receive and transmit data, as illustrated by arrow 112 1. The device 110 2 accesses the wireless communication system via the user UE 3 as illustrated by arrow 112 2. Each base station gNB 1 to gNB 5 may be connected to the core network 102, e.g., via an S1 interface, via each of the backhaul links 114 1 to 114 5, which are illustrated in fig. 10 (b) by arrows pointing to the "core". The core network 102 may be connected to one or more external networks. The external network may be the internet, or a private network, such as an intranet, or any other type of campus network, such as a private WiFi communication system or a 4G or 5G mobile communication system. further, some or all of the base stations gNB 1 to gNB 5 may be connected to each other by respective backhaul links 116 1 to 116 5, e.g., via an S1 or X2 interface or an XN interface in NR, which are illustrated in fig. 10 (b) by arrows pointing to "gNBs". The side-uplink channel allows direct communication between UEs, also referred to as device-to-device (D2D) communication. The side-uplink interface in 3GPP is named PC5. For data transmission, a physical resource grid may be used. The physical resource grid may include a set of resource elements to which various physical channels and physical signals are mapped. For example, the physical channels may include a physical downlink shared channel, a physical uplink shared channel, and a physical sidelink shared channel (PDSCH, PUSCH, PSSCH) carrying user-specific data (also referred to as downlink payload data, uplink payload data, and sidelink payload data), a Physical Broadcast Channel (PBCH) and a Physical Sidelink Broadcast Channel (PSBCH) carrying, for example, a Master Information Block (MIB) and one or more System Information Blocks (SIBs), one or more sidelink information blocks (SLIBs), if supported, a physical downlink control channel (DCI), a physical uplink control