Positioning using multiple frequency layers

Abstract

To provide positioning using multiple frequency layers.SOLUTION: Provided are a system, method, device or computer-readable medium for positioning using multiple frequency layers. A first communication device may constitute first aggregated positioning information for aggregated positioning measurement in first multiple frequency layers. The first communication device may receive, from a second communication device, a report including second aggregated positioning information for aggregated positioning measurement in second multiple frequency layers. The first aggregated positioning information may also be associated with at least one of the first multiple frequency layers, and the second aggregated positioning information may also be associated with at least one of the second multiple frequency layers.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] FIELD OF THE DISCLOSURE The present disclosure relates generally to wireless communications, including, but not limited to, systems and methods for positioning using multiple frequency layers. [Background technology]

[0002] The standardization body, the 3rd Generation Partnership Project (3GPP®), is currently in the process of specifying a new air interface, called 5G New Radio (5G NR) and Next Generation Packet Core Network (NG-CN or NGC). 5G NR will have three main components: a 5G Access Network (5G-AN), a 5G Core Network (5GC), and a User Equipment (UE). To facilitate the availability of different data services and requirements, elements of the 5GC, also called network functions, are being simplified with some of them being software-based so that they can be adapted according to the needs. Summary of the Invention [Means for solving the problem]

[0003] The exemplary embodiments disclosed herein are directed to solving problems associated with one or more of the problems presented in the prior art and to providing additional features that will become readily apparent by reference to the following detailed description when considered in conjunction with the accompanying drawings. According to various embodiments, exemplary systems, methods, devices, and computer program products are disclosed herein. It should be understood, however, that these embodiments are presented by way of example, not limitation, and that various modifications to the disclosed embodiments may be made while remaining within the scope of the present disclosure, as will be apparent to those skilled in the art upon perusal of this disclosure.

[0004] At least one aspect is directed to a system, method, apparatus, or computer-readable medium. A first communication device may configure first aggregated positioning information for aggregated positioning measurements on a first plurality of frequency layers. The first communication device may receive a report from a second communication device, the report including second aggregated positioning information for the aggregated positioning measurements on a second plurality of frequency layers. The first aggregated positioning information may be associated with at least one of the first plurality of frequency layers, and the second aggregated positioning information may be associated with at least one of the second plurality of frequency layers.

[0005] In some embodiments, one of the first or second plurality of frequency layers may be a reference frequency layer of the other frequency layer of the first or second plurality of frequency layers. In some embodiments, only the positioning information of the reference frequency layer may be used as the first aggregated positioning information or the second aggregated positioning information.

[0006] In some embodiments, the reference frequency layer positioning information may include at least one of a set of downlink (DL) positioning reference signal (PRS) resources to be used as a reference for measurements of DL reference signal time difference (RSTD), DL PRS reference signal received power (PRS-RSRP), and UE receive-transmit (Rx-Tx) time difference; a transmit-receive point (TRP) identifier (ID), one or more DL PRS resource IDs, or DL ​​PRS resource set IDs, or single frequency network (SFN) used to determine the reference for the measurements; and a timestamp parameter including a slot number for subcarrier spacing (SCS).

[0007] In some embodiments, the first communications device may receive an indication from the second communications device that a subset of a first plurality of frequency layers or a subset of a first plurality of positioning resource set identifiers (IDs) configured by the first communications device should be measured for an aggregated positioning measurement report.

[0008] In some embodiments, the second aggregated positioning information is a second aggregated positioning information having a maximum bandwidth (B F ), the maximum number of frequency layers in the aggregate (F), the duration in seconds (T) in milliseconds (ms) for the aggregate measurement F ) is the first duration of a downlink (DL) positioning reference signal (PRS) symbol in ms that is processed every N F ), or a user equipment (UE) capability report including at least one of a maximum or minimum phase or timing shift between frequency layers in the aggregation.

[0009] In some embodiments, B F may include one or more frequency gaps between pairs of frequency layers in the second plurality of frequency layers. F ≦N or T F ≧T, and N may be the first duration of a DL PRS symbol in milliseconds (ms) that is processed per second duration (T) in ms for measurements of a single frequency layer.

[0010] In some embodiments, the second aggregated positioning information may include user equipment (UE) capabilities for an aggregation of the second plurality of frequency layers, or may be based on a UE capability report for a single frequency layer of the second plurality of frequency layers.

[0011] In some embodiments, N F N, F, B F , or at least one of B, T F T, F, B F or B, and may be determined according to at least one of, or R F R, F, B F or at least one of B. In some embodiments, N F is the time duration (T) in milliseconds (ms) for aggregate measurements. F), F may be the maximum number of frequency tiers in the aggregation, N may be the first duration of a DL PRS symbol in ms processed per second duration (T) in ms for measurements on one frequency tier, B may be the maximum bandwidth of one frequency tier, and B F is the maximum bandwidth (B F ) may also be used.

[0012] In some embodiments, a duration K in milliseconds (ms) of a downlink (DL) positioning reference signal (PRS) symbol within a time window (P) in ms for an aggregation of frequency layers from the first or second plurality of frequency layers. F But K, F', B F’ , or at least one of B. In some embodiments, K may be the duration in ms of a DL PRS symbol within a time window in ms for PRS processing of one frequency layer, F may be the maximum number of frequency layers in the aggregation, F' may be the configured number of frequency layers in the aggregation or a function of the configured number of frequency layers, and B F’ K may be a function of the configured bandwidth of the aggregate, and B may be the maximum bandwidth of one frequency tier. F = F' × K. In some embodiments, K F is K×(B F’ and B).

[0013] In some embodiments, the reference frequency layer is a total downlink (DL) reference signal time difference (RSTD) measurement period (T RSTD,Total ) or DL ​​Positioning Reference Signal (PRS) Reference Signal Received Power Measurement Period (T PRS-RSTD,i ), and the other frequency layer of the first or second plurality of frequency layers may not be used.

[0014] In some embodiments, a first communication device may transmit signaling to a second communication device scheduling at least a first positioning reference signal (RS) resource with a first resource identifier (ID) or a first resource set with a first resource set ID=I on a first frequency layer, and a second positioning RS resource with the first resource ID or a resource set with the first resource set ID on a second frequency layer, where the first frequency layer and the second frequency layer are from a first plurality of frequency layers. In some embodiments, a bandwidth portion (BWP) ID for the first RS resource or first resource set may be the same as that for the second RS resource or second resource set.

[0015] At least one aspect is directed to a system, method, apparatus, or computer-readable medium. A second communication device may transmit a report to a first communication device, the report including second aggregated positioning information for aggregated positioning measurements on a second plurality of frequency layers. The first communication device may configure first aggregated positioning information for the aggregated positioning measurements on the first plurality of frequency layers. The first aggregated positioning information may be associated with at least one of the first plurality of frequency layers, and the second aggregated positioning information may be associated with at least one of the second plurality of frequency layers. The present invention provides, for example, the following. (Item 1) 1. A method comprising: configuring, by the first communication device, first aggregated positioning information for aggregated positioning measurements on a first plurality of frequency layers; receiving, by the first communication device, from a second communication device, a report including second aggregated positioning information for aggregated positioning measurements on a second plurality of frequency layers; Including, 10. A method according to claim 1, wherein the first aggregated positioning information is associated with at least one of the first plurality of frequency layers and the second aggregated positioning information is associated with at least one of the second plurality of frequency layers. (Item 2) one of the first or second plurality of frequency layers is a reference frequency layer of the other frequency layer of the first or second plurality of frequency layers; Only the positioning information of the reference frequency layer is used as the first aggregated positioning information or the second aggregated positioning information; The method according to item 1. (Item 3) The positioning information of the reference frequency layer is a set of downlink (DL) positioning reference signal (PRS) resources to be used as references for measuring DL reference signal time difference (RSTD), DL PRS reference signal received power (PRS-RSRP), and UE receive-transmit (Rx-Tx) time difference; a Transmission-Reception Point (TRP) Identifier (ID), one or more DL PRS Resource IDs, or DL ​​PRS Resource Set IDs used to determine the criteria for the measurement; or timestamp parameters including the slot number for the single frequency network (SFN) and the subcarrier spacing (SCS) Item 3. The method according to item 2, comprising at least one of the following: (Item 4) receiving, by the first communication device, an indication from the second communication device that a subset of the first plurality of frequency layers or a subset of a first plurality of positioning resource set identifiers (IDs) configured by the first communication device should be measured for the aggregated positioning measurement report; Item 1. The method according to item 1, comprising: (Item 5) The second aggregated positioning information is The maximum bandwidth (B F ), the maximum number of frequency layers in the aggregation (F); The time duration (T) in milliseconds (ms) for the above aggregate measurements F ) the first duration of the downlink (DL) positioning reference signal (PRS) symbols in ms that are processed every N F ),or The maximum or minimum phase or timing deviation between frequency layers within the aggregate. Item 1, the method comprising: a user equipment (UE) capability report including at least one of: (Item 6) Above B F Item 6. The method of item 5, wherein the second plurality of frequency layers includes one or more frequency gaps between pairs of frequency layers in the second plurality of frequency layers. (Item 7) N F ≦N or T F Item 6. The method of item 5, wherein N is a first duration of DL PRS symbols in milliseconds (ms) processed per second duration (T) in ms for single frequency layer measurements, and N is a second duration (T) in ms. (Item 8) Item 1, wherein the second aggregated positioning information includes user equipment (UE) capabilities for an aggregate of the second plurality of frequency layers and is based on a UE capability report for a single frequency layer of the second plurality of frequency layers. (Item 9) N F N, F, B F or B, and T F T, F, B F or B, or R F R, F, B F or B. At least one of N F is the time duration (T) in milliseconds (ms) for the above aggregate measurements. F) is the first duration of a downlink (DL) positioning reference signal (PRS) symbol in ms that is processed every F is the maximum number of frequency layers in the aggregation; N is the first duration of the DL PRS symbol in ms that is processed per second duration (T) in ms for measurements of one frequency layer; B is the maximum bandwidth of the above frequency layer, B F is the maximum bandwidth (B F ) The method according to item 8. (Item 10) a duration K in milliseconds (ms) of a downlink (DL) positioning reference signal (PRS) symbol within a time window (P) in milliseconds (ms) for an aggregation of frequency layers from the first or second plurality of frequency layers; F But K, F', B F’ or at least one of B, K is the duration in ms of a DL PRS symbol within the time window in ms for PRS processing of one frequency layer, F is the maximum number of frequency layers in the aggregation; F' is the configured number of frequency tiers in the aggregation or a function of the configured number of frequency tiers; B F’ is the configured bandwidth of the aggregate, a function of the configured bandwidth, B is the maximum bandwidth of the above frequency layer, The method according to item 1. (Item 11) K F Item 11. The method according to item 10, wherein F′×K. (Item 12) K F is K×(B F’ and B). (Item 13) The reference frequency layer is the total downlink (DL) reference signal time difference (RSTD) measurement period (T RSTD,Total) or DL ​​Positioning Reference Signal (PRS) Reference Signal Received Power Measurement Period (T PRS-RSTD,i ) is used to calculate at least one of the first or second plurality of frequency layers, and the other frequency layer of the first or second plurality of frequency layers is not used. (Item 14) The first communication device transmits to the second communication device at least: a first positioning reference signal (RS) resource with a first resource identifier (ID) or a first resource set with a first resource set ID=I in a first frequency layer; In a second frequency layer, where the first frequency layer and the second frequency layer are from the first plurality of frequency layers, a second positioning RS resource with the first resource ID or a resource set with the first resource set ID; transmitting signaling for scheduling the Item 1. The method according to item 1, comprising: (Item 15) Item 15. The method of item 14, wherein a bandwidth portion (BWP) ID for the first RS resource or the first resource set is the same as that for the second RS resource or the second resource set. (Item 16) 1. A method comprising: transmitting, by the second communication device to the first communication device, a report including second aggregated positioning information for the aggregated positioning measurements on the second plurality of frequency layers; Including, The first communications device configures first aggregated positioning information for aggregated positioning measurements on a first plurality of frequency layers; 10. A method according to claim 1, wherein the first aggregated positioning information is associated with at least one of the first plurality of frequency layers and the second aggregated positioning information is associated with at least one of the second plurality of frequency layers. (Item 17) 17. A non-transitory computer-readable medium storing instructions that, when executed by at least one processor, cause the at least one processor to perform the method of any one of items 1-16. (Item 18) 1. An apparatus comprising: At least one processor configured to perform the method according to any one of items 1-16. An apparatus comprising: [Brief explanation of the drawings]

[0016] Various exemplary embodiments of the present solution are described in detail below with reference to the following figures or drawings. The drawings are provided for illustrative purposes only and merely depict exemplary embodiments of the present solution to facilitate the reader's understanding of the present solution. Therefore, the drawings should not be considered as limiting the scope, scope, or applicability of the present solution. It should be noted that for clarity and ease of illustration, the drawings are not necessarily drawn to scale.

[0017] [Figure 1] FIG. 1 illustrates an example cellular communication network in which the techniques disclosed herein may be implemented, according to certain embodiments of the present disclosure.

[0018] [Figure 2] FIG. 2 illustrates a block diagram of an example base station and user equipment device, in accordance with some embodiments of the present disclosure.

[0019] [Figure 3] FIG. 3 illustrates a block diagram of a scheduling grant specification from a wireless communication node for scheduling multiple resource sets in different carriers with the same resource set identifier for positioning, according to an illustrative embodiment.

[0020] [Figure 4]FIG. 4 illustrates a block diagram of a Medium Access Control-Control Element (MAC-CE) for positioning activation or deactivation of a Sounding Reference Signal (SRS), in accordance with an illustrative embodiment.

[0021] [Figure 5] FIG. 5 illustrates a block diagram of bandwidth with frequency gaps between multiple frequency layers, in accordance with an illustrative embodiment.

[0022] [Figure 6] FIG. 6 illustrates a flow diagram of a method for positioning using multiple frequency layers, in accordance with an illustrative embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0023] Detailed Description Various exemplary embodiments of the present solution are described below with reference to the accompanying figures to enable those skilled in the art to make and use the present solution. As will be apparent to those skilled in the art after reading this disclosure, various changes or modifications to the examples described herein can be made without departing from the scope of the present solution. Thus, the present solution is not limited to the exemplary embodiments and applications described and illustrated herein. Additionally, any specific order or hierarchy of steps in the methods disclosed herein is merely an example approach. Based on design preferences, the specific order or hierarchy of steps in a disclosed method or process can be rearranged while remaining within the scope of the present solution. Thus, those skilled in the art will understand that the methods and techniques disclosed herein present various steps or acts in a sample order, and that the present solution is not limited to the specific order or hierarchy presented, unless explicitly stated otherwise. 1. Mobile Communications Technology and Environment

[0024] 1 illustrates an exemplary wireless communication network and / or system 100 in which the techniques disclosed herein may be implemented, according to certain embodiments of the present disclosure. In the following discussion, the wireless communication network 100 may be any wireless network, such as a cellular network or a narrowband Internet of Things (NB-IoT) network, and will be referred to herein as “network 100.” Such exemplary network 100 includes a base station 102 (hereinafter “BS 102,” also referred to as a wireless communication node), user equipment devices 104 (hereinafter “UE 104,” also referred to as a wireless communication device), which may communicate with each other via communication links 110 (e.g., wireless communication channels), and clusters of cells 126, 130, 132, 134, 136, 138, and 140 overlaying a geographic area 101. In FIG. 1, the BS 102 and the UE 104 are contained within the respective geographic boundaries of cell 126. Each of the other cells 130, 132, 134, 136, 138, and 140 may include at least one base station operating in its allocated bandwidth and providing adequate radio coverage to its intended users.

[0025] For example, the BS 102 may operate within an allocated channel transmission bandwidth to provide adequate coverage to the UE 104. The BS 102 and the UE 104 may communicate via downlink radio frames 118 and uplink radio frames 124, respectively. Each radio frame 118 / 124 may be further divided into subframes 120 / 127, which may include data symbols 122 / 128. In this disclosure, the BS 102 and the UE 104 are generally described herein as non-limiting examples of “communication nodes” that may practice the methods disclosed herein. Such communication nodes may be capable of wireless and / or wired communication in accordance with various embodiments of the present solution.

[0026] 2 illustrates a block diagram of an exemplary wireless communication system 200 for transmitting and receiving wireless communication signals (e.g., OFDM / OFDMA signals) in accordance with some embodiments of the present solution. System 200 may include components and elements configured to support known or conventional operational features that need not be described in detail herein. In one illustrative embodiment, system 200 can be used to communicate (e.g., transmit and receive) data symbols within a wireless communication environment, such as wireless communication environment 100 of FIG. 1, as described above.

[0027] The system 200 generally includes a base station 202 (hereinafter “BS 202”) and a user equipment device 204 (hereinafter “UE 204”). The BS 202 includes a BS (base station) transceiver module 210, a BS antenna 212, a BS processor module 214, a BS memory module 216, and a network communication module 218, each of which is coupled and interconnected, as needed, with each other via a data communication bus 220. The UE 204 includes a UE (user equipment) transceiver module 230, a UE antenna 232, a UE memory module 234, and a UE processor module 236, each of which is coupled and interconnected, as needed, with each other via a data communication bus 240. The BS 202 communicates with the UE 204 via a communication channel 250, which may be any wireless channel or other medium suitable for the transmission of data as described herein.

[0028] As will be understood by those skilled in the art, system 200 may further include any number of modules other than those shown in FIG. 2 . Those skilled in the art will understand that the various illustrative blocks, modules, circuits, and processing logic described in connection with the embodiments disclosed herein may be implemented in hardware, computer-readable software, firmware, or any practical combination thereof. To clearly illustrate this interchangeability and compatibility of hardware, firmware, and software, the various illustrative components, blocks, modules, circuits, and steps are described generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software may depend on the particular application and design constraints imposed on the overall system. Those familiar with the concepts described herein may implement such functionality in a suitable manner for each particular application, but such implementation decisions should not be interpreted as limiting the scope of the present disclosure.

[0029] According to some embodiments, the UE transceiver 230 may be referred to herein as an “uplink” transceiver 230, including a radio frequency (RF) transmitter and an RF receiver, each with circuitry coupled to the antenna 232. A duplex switch (not shown) may alternatively couple the uplink transmitter or receiver to the uplink antenna in a time-duplexed manner. Similarly, according to some embodiments, the BS transceiver 210 may be referred to herein as a “downlink” transceiver 210, including an RF transmitter and an RF receiver, each with circuitry coupled to the antenna 212. A downlink duplex switch may alternatively couple the downlink transmitter or receiver to the downlink antenna 212 in a time-duplexed manner. The operation of the two transceiver modules 210 and 230 may be coordinated in time such that the downlink transmitter is coupled to the downlink antenna 212 at the same time that the uplink receiver circuitry is coupled to the uplink antenna 232 for reception of transmissions over the wireless transmission link 250. Conversely, the operation of the two transceivers 210 and 230 may be coordinated in time such that the uplink transmitter is coupled to the uplink antenna 232 at the same time that the downlink receiver is coupled to the downlink antenna 212 for reception of transmissions over the wireless transmission link 250. In some embodiments, there is close time synchronization with minimal guard time between changes in duplex direction.

[0030] The UE transceiver 230 and the base station transceiver 210 are configured to communicate over a wireless data communication link 250 and cooperate with a suitably configured RF antenna array 212 / 232 capable of supporting a particular wireless communication protocol and modulation scheme. In some demonstrative embodiments, the UE transceiver 210 and the base station transceiver 210 are configured to support industry standards such as Long Term Evolution (LTE) and emerging 5G standards and equivalents. However, it should be understood that the present disclosure is not necessarily limited in application to a particular standard and associated protocol. Rather, the UE transceiver 230 and the base station transceiver 210 may be configured to support alternative or additional wireless data communication protocols, including future standards or variations thereof.

[0031] According to various embodiments, the BS 202 may be, for example, an evolved Node B (eNB), a serving eNB, a target eNB, a femto station, or a pico station. In some embodiments, the UE 204 may be embodied in various types of user devices, such as a mobile phone, a smartphone, a personal digital assistant (PDA), a tablet, a laptop computer, a wearable computing device, etc. The processor modules 214 and 236 may be implemented or realized with a general-purpose processor, an associative memory, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, any suitable programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described herein. As such, a processor may be realized as a microprocessor, a controller, a microcontroller, a state machine, or the like. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other such configuration.

[0032] Furthermore, the steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, firmware, software modules, or any practical combination thereof, executed directly by processor modules 214 and 236, respectively. Memory modules 216 and 234 may be implemented as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. In this regard, memory modules 216 and 234 may be coupled to processor modules 210 and 230, respectively, such that processor modules 210 and 230 may read information from and write information to memory modules 216 and 234, respectively. Memory modules 216 and 234 may also be integrated within their respective processor modules 210 and 230. In some embodiments, memory modules 216 and 234 may each include cache memory for storing temporary variables or other intermediate information during execution of instructions to be executed by processor modules 210 and 230, respectively. Memory modules 216 and 234 may also each include non-volatile memory for storing instructions to be executed by processor modules 210 and 230, respectively.

[0033] The network communications module 218 generally represents the hardware, software, firmware, processing logic, and / or other components of the base station 202 that enable bidirectional communications between the base station transceiver 210 and other network components and communication nodes configured to communicate with the base station 202. For example, the network communications module 218 may be configured to support Internet or WiMAX traffic. In a typical deployment, without limitation, the network communications module 218 provides an 802.3 Ethernet interface so that the base station transceiver 210 may communicate with conventional Ethernet-based computer networks. As such, the network communications module 218 may include a physical interface for connection to a computer network (e.g., a mobile switching center (MSC)). As used herein with respect to specified operations or functions, the terms “configured for,” “configured to,” and conjugations thereof, refer to devices, components, circuits, structures, machines, signals, etc. that are physically constructed, programmed, formatted, and / or arranged to perform the specified operations or functions.

[0034] The Open Systems Interconnection (OSI) model (referred to herein as the "Open Systems Interconnection Model") is a conceptual and logical layout that defines network communications used by systems (e.g., wireless communication devices, wireless communication nodes) that open the system to interconnect and communicate with other systems. The model is divided into seven subcomponents or layers, each representing a conceptual collection of services provided to the layers above and below it. The OSI model also defines logical networks and effectively describes computer packet transfers by using different layer protocols. The OSI model may also be referred to as the seven-layer OSI model or seven-layer model. In some embodiments, the first layer may be the physical layer. In some embodiments, the second layer may be the medium access control (MAC) layer. In some embodiments, the third layer may be the radio link control (RLC) layer. In some embodiments, the fourth layer may be the packet data convergence protocol (PDCP) layer. In some embodiments, the fifth layer may be the radio resource control (RRC) layer. In some embodiments, the sixth layer may be a non-access stratum (NAS) layer or an Internet Protocol (IP) layer, and the seventh layer may be another layer. 2. System and method for positioning using multiple frequency layers

[0035] To improve positioning accuracy, positioning reference signals (PRSs) transmitted in multiple frequency layers can be aggregated. One signaling (e.g., downlink control information (DCI) or medium access control-control element (MAC-CE)) may be for scheduling a positioning reference signal (RS) resource with resource identifier (ID)=i and resource set ID=i in frequency layer #x, and for scheduling another positioning reference signal (RS) resource or resource set with ID=i in another frequency layer #y. Frequency layer #x and frequency layer #y may be related or may be in the same frequency layer group.

[0036] A UE may report its capabilities for both single-layer PRS processing and aggregated frequency layer processing for a band. The capabilities for the single layer and the F aggregated layers may vary depending on several conditions (e.g., NF<N、TF> T) may be satisfied. The UE capabilities or configured parameters for the aggregated FL may also be determined by those for the single-tier FL (e.g., processing duration KF=F′×K).

[0037] Positioning services can be very popular among users who are outdoors or indoors. In outdoor scenarios, GPS can be used for positioning. In indoor scenarios, the GPS signal power may be too weak to obtain accurate positioning estimates. To take these drawbacks into account, radio-dependent positioning solutions, such as timing difference-based positioning solutions, can be used. However, the frequency layer of the positioning reference signal is transmitted within a single frequency layer with limited bandwidth, which may further cause accuracy limitations. A. Scheduling grants for scheduling multiple sets of resources within different carriers

[0038] To improve the accuracy of positioning, a wider bandwidth may be used for the positioning reference signal (RS). One solution may be to aggregate the positioning RS reception into multiple frequency layers. One frequency layer may also be a serving cell or component carrier. For aperiodic or semi-persistent positioning RS, physical layer signaling (e.g., DCI or MAC CE) may be used to trigger or activate the positioning RS.

[0039] 3, depicted is a block diagram of a specification 300 of a scheduling grant 305 from a wireless communication node for scheduling multiple resource sets in different carriers with the same resource set identifier for positioning. To save signaling overhead, one signaling (e.g., DCI or MAC CE) may be for scheduling a positioning RS resource with resource ID=i or a resource set with resource set ID=i in frequency layer #x, and another positioning RS resource with resource ID=i or a resource set with resource set ID=i may also be scheduled by signaling in another frequency layer #y. Frequency layer #x and frequency layer #y may be associated or in the same frequency layer group.

[0040] In other words, a single signaling (e.g., DCI or MAC CE) can be used to schedule multiple positioning RS resources or resource sets in all frequency layers of a frequency layer group. Positioning RS resources in different frequency layers may have the same resource ID. Positioning RS resource sets in different frequency layers scheduled by a single signaling may also have the same resource set ID. Furthermore, the bandwidth portion (BWP) IDs of these positioning RS resources or resource sets scheduled by the signaling may be the same. As shown, one scheduling grant (e.g., DCI or MAC CE) from a wireless communication node (e.g., BS or gNB) may be for scheduling multiple SRS resource sets in different carriers with the same resource set ID for positioning.

[0041] Referring now to FIG. 4, depicted is a block diagram of a medium access control-control element (MAC-CE) 400 for positioning activation or deactivation of a sounding reference signal (SRS). For a semi-persistent SRS resource set for positioning, one MAC-CE may be for activating the positioning SRS resource set as shown (e.g., based on 3G GPP TS38.321). A stationary peer (SP) positioning SRS activation or deactivation MAC CE may be identified by a MAC subheader with an extended logical channel identifier (eLCID) (e.g., as specified in Table 6.2.1-1b). The MAC-CE may have a variable size with the following fields:

[0042] The A / D field 405 may indicate whether to activate or deactivate the indicated SP positioning SRS resource set. This field may be set to 1 to indicate activation; otherwise, this field may indicate deactivation.

[0043] The positioning SRS resource set cell ID field 410 may indicate the identity of the serving cell Ci. The serving cell Ci 410 may contain an activated or deactivated SP positioning SRS resource set i. If the Ci field 410 is set to 0, this field may also indicate the identity of the serving cell. The serving cell field 410, if present, may contain all resources indicated by their spatial relationship with respect to the resource IDi field. The length of the field may be 5 bits.

[0044] The C field 430 may indicate whether octets containing the resource serving cell ID field 410 and the resource BWP ID field 415 are present in the field spatial relation for resource ID i, except for spatial relation resource ID i 445A-N with DL-PRS or SSB. When the A / D field 405 is set to 1, if the C field 430 is set to 1, the octets containing the resource serving cell ID field 410 and the resource BWP ID field 415 may be present in the field spatial relation for resource ID i. Otherwise, if this field is set to 0, they may not be present. When the A / D field 405 is set to 0, the C field 430 may always be set to 0, indicating that they are not present.

[0045] The SUL field 435 may indicate whether the MAC CE 400 applies to a NUL carrier or a SUL carrier configuration. This field may be set to 1 to indicate that it applies to a SUL carrier configuration, and this field may be set to 0 to indicate that the MAC-CE 400 applies to a NUL carrier configuration.

[0046] The positioning SRS resource set ID I field 440 may indicate the SP positioning SRS resource set, identified by SRS-PosResourceSetId=i, that is to be activated or deactivated. The length of this field may be 4 bits.

[0047] The spatial relationship for the Resource Idi 445A-N field for resource IDi may exist only if MAC CE is used for activation (e.g., A / D field 405 may be set to 1). M may be the total number of positioning SRS resources configured under the SP positioning SRS resource set indicated by the field Positioning SRS Resource Set ID. There may be four types of spatial relationships for resource IDi, indicated therein by the F (F0 and F1) fields. The fields in the Spatial Relationship for Resource IDi may relate to four types of spatial relationships for resource IDi (e.g., as shown in Figures 6.1.3.36-2-6.1.3.36-5).

[0048] The S field 425 may indicate whether a field spatial relationship exists for resource IDi for positioning SRS resource i in the positioning SRS resource set. If this field is set to 1, the field spatial relationships for resource IDi may exist; otherwise, they may not exist. In addition, the R reserved bit 420 may be set to 0.

[0049] Therefore, an extension may be that the MAC CE is also for activating or deactivating an SRS resource set with set ID=i within some serving cells or CCs associated with serving cell Ci. The association may be configured by higher layer signaling (e.g., RRC signaling) or signaling notified by a location management function (LMF). Furthermore, the BWP IDs of these SRS resource sets within the associated serving cells (group of carrier components (CCs)) may be the same. Therefore, one MAC CE may be used to activate or deactivate SRS resource sets for positioning with the same set ID and the same BWP ID within a group of CCs. In other words, N SRS resource sets for positioning with the same resource set ID and BWP ID can be activated or deactivated by a single MAC CE. The MAC CE may indicate a single SRS resource set ID, BWP ID, and CC ID.

[0050] For further flexibility, associations or CC groups can be configured per SRS resource set, or per CC, or per frequency layer. For example, a first group of CC indices can be configured for SRS resource set i in serving cell (or frequency layer or CC) Ci. A second group of CC indices can be configured for SRS resource set j in serving cell (or frequency layer or CC) Cj. In this notation, i may not equal j, or Ci may not equal Cj. For example, Ci = Cj, although i may not equal j. When SRS resource set i in Ci is scheduled, all SRS resource sets with set ID = i in the first group of CCs may be scheduled and transmitted. When SRS resource set j in Cj = Ci is scheduled, all SRS resource sets with set ID = j in the second group of CCs may be scheduled and transmitted. In other words, CC groups may be configured separately for different SRS resource sets.

[0051] In some embodiments, CC groups may be configured separately for different CCs or frequency layers. For a serving cell (or frequency layer or CC) Ci, a first group of CC indices may be configured. For a serving cell (or frequency layer or CC) Cj, a second group of CC indices may be configured. When SRS resource set i in Ci is scheduled, all SRS resource sets with set ID=i in the first group of CCs may be scheduled and transmitted. When SRS resource set j in Cj is scheduled, all SRS resource sets with set ID=j in the second group of CCs may be scheduled and transmitted.

[0052] A similar approach can also be used for other RSs, including downlink (DL) positioning RSs. For DL ​​positioning RSs, the serving cell or CC may be replaced by a frequency layer. Based on this approach, one scheduling grant may be used to trigger or schedule multiple RS resource sets in different frequency layers or carriers. However, the subcarrier spacing in different frequency layers or carriers may be different.

[0053] The timing offset between the scheduling grant and the positioning RS transmission within each frequency tier or CC may be based on at least one of the following parameters: the maximum or minimum subcarrier spacing between frequency tiers within a frequency tier group; and the maximum or minimum value between the timing offsets configured or indicated for positioning RS transmission within a frequency tier group. For example, a DCI in slot n may trigger two positioning RS resource sets, both with set ID i, in CC0 and CC1. In this case, the slot offset configured for the RS resource set within CC0 may be k1, and the slot offset configured for the RS resource set within CC1 may be k2. The subcarrier spacing of CC0 may be smaller than that of CC1. In such a case, the minimum subcarrier spacing of CC0 and CC1 may be used to determine the timing offset between the DCI and the transmission of the two RS resource sets. This means that the subcarrier spacing of CC0 may be used to determine the duration of both k1 and k2. B. UE Capability Report

[0054] For a UE to support positioning measurements within frequency layer f in band b, the UE may report certain UE capabilities to the network (e.g., LMF or gNB). The UE capabilities per band may include one or more of the following parameters:

[0055] The maximum bandwidth B supported by the UE can be reported separately for the FR1 band and the FR2 band, for example, a maximum of 80 MHz may be supported and reported by the UE for the FR1 band b, and 200 MHz may be supported and reported by the UE for the FR2 band b.

[0056] A DL PRS buffering capability parameter (e.g., Type 1 or Type 2) may also be reported. Type 1 may be sub-slot or symbol level buffering. Type 2 may be slot level buffering.

[0057] Combinations of (N,T) values ​​may also be reported. N may be the duration of a DL PRS symbol in ms processed every T ms for a given maximum bandwidth B in MHz supported by the UE. For a duration of N DL PRS symbols in ms, the UE may process every T ms, assuming the maximum DL PRS bandwidth in MHz supported and reported by the UE. T may include, for example, {8, 16, 20, 30, 40, 80, 160, 320, 640, 1,280} ms. N may include, for example, {0.125, 0.25, 0.5, 1, 2, 4, 6, 8, 12, 16, 20, 25, 30, 32, 35, 40, 45, 50} ms.

[0058] The maximum number of DL PRS resources R that the UE may process in a slot may also be reported. R may be different for different subcarrier spacings (SCSs) and also for the FR1 or FR2 bands.

[0059] The UE may report capability signaling as described above. On the other hand, the LMF may configure the positioning RS (PRS). For the purpose of DL PRS processing capability, the duration Kms of the DL PRS symbol within the Pms window, which corresponds to the maximum PRS periodicity within the positioning frequency layer, is calculated by Type 1 duration calculation with the UE symbol level buffering capability. [ka] Type 2 duration calculation with UE slot-level buffering capability [ka] where S is the set of slots based on the DL PRS numerology of the serving cell within a P millisecond window in the positioning frequency layer that contains potential DL PRS resources. For Type 1, [ka] Let μ be the minimum interval in ms within slot s that covers the union of potential PRS symbols and corresponds to an integer number of OFDM symbols based on the numerology of the DL PRS of the serving cell, determining the PRS symbol occupancy in slot s. For Type 2, μ may be the numerology of the DL PRS.

[0060] Furthermore, (K,P) may mean that the UE will process a PRS of duration K ms within a window with a periodicity of P ms. K and P may depend on the PRS configuration. Assuming P is equal to UE capability T, if K≦UE capability N, the UE can process all K ms durations of the PRS. However, if K>N, the UE may not be able to process K ms of PRS within window P. For example, if K=2N, the UE may process all K ms of PRS within a 2P window because the configured PRS measurements exceed the UE capability.

[0061] For a UE to support positioning measurements in F (F>=1) aggregated frequency layers, the UE may simultaneously receive and measure F positioning RS resources on F frequency layers. For simplicity and positioning measurement accuracy, the F frequency layers may be within one frequency band (e.g., within band b). I. UE Processing Complexity

[0062] One challenge may be that when a UE simultaneously processes PRSs in F aggregated frequency layers in band f, UE cost and complexity may be higher than processing in a single frequency layer. Therefore, UE capabilities for single-layer PRS processing and F aggregated frequency layer PRS processing may differ. A UE may be configured with multiple frequency layers, but only one may be configured by the UE at a given time. Therefore, UE capabilities for both single-layer PRS processing and F frequency layer processing may be made clear to both the network side and the UE side. a. Reporting UE Capabilities for Single-Layer PRS Processing and Aggregated Frequency Layers

[0063] 5, depicted is a block diagram of a bandwidth 500 with frequency gaps between multiple frequency layers. In some embodiments, UE capabilities may be reported for both single-layer PRS processing and F aggregated frequency layer processing for a given band. For single-layer PRS processing, the UE capabilities may be as described above. For multiple aggregated frequency layer processing, the UE capabilities per band may include one or more of the following parameters that may be reported:

[0064] The parameter is the maximum bandwidth B supported by the UE for more than one frequency layer aggregation. F This parameter is larger than B. This parameter may include the gap length between two frequency layers. Therefore, B F may indicate the maximum supported bandwidth UE, including the bandwidth of the frequency layers and the gap between the frequency layers. This is because the full bandwidth including the gap may also come at the expense of UE complexity if the UE adds zeros between two non-contiguous frequency layers.

[0065] Furthermore, the parameters do not have to include the gap length between the two frequency layers. Fmay indicate the maximum bandwidth that the UE may support, which is the sum of the bandwidths of multiple frequency layers without considering the gaps between the frequency layers. In such a case, the UE may not need to add zeros when performing an inverse fast Fourier transform (IFFT) operation for multiple frequency layer measurements.

[0066] This parameter may also identify the maximum number of frequency layers, F. The UE may support aggregated measurements for up to F frequency layers.

[0067] This parameter is also (N F ,T F ) values. F is the given maximum bandwidth B in MHz supported by the UE F For T F DL PRS symbols N in units of ms, processed every ms F For the duration of B, the UE is supported by the UE. F Assuming a maximum DL PRS bandwidth in MHz reported as T F ms. Aggregated measurements of multiple frequency layers come at the expense of more UE complexity and memory, so UE processing capacity may be less than that for a single layer. Therefore, one or more of the following conditions must be met: F ≦N or N F <N、およびT F >=T or T F >T should be satisfied.

[0068] This parameter specifies the maximum number of DL PRS resources R that the UE can process in a slot. Fcan identify. The UE may simultaneously measure PRS resources in different frequency layers at a given time with one receiver chain, so the PRS resources transmitted simultaneously within the F aggregated frequency layers can be assumed as one PRS resource. In addition, the maximum number R of DL PRS resources that the UE can process within multiple aggregated frequency layers F can count the PRS resources in one of the F aggregated frequency layers. Since the aggregated measurements of multiple frequency layers sacrifice more UE complexity and memory, the UE processing ability may be less sufficient than that for a single layer. Therefore, R F ≤ R or R F < R. When R F counts the PRS resources within all the aggregated frequency layers, R F / F ≤ R or R F / F < R, or R F ≤ R × F or R F < R × F may exist as a condition.

[0069] This parameter can identify the phase offset or timing offset between the aggregated frequency layers. Since the phase offset or timing offset between or within the aggregated frequency layers has a great impact on the performance of the positioning measurement, one or more values of the phase offset or timing offset within the aggregated frequency layers can be reported. The reported phase offset or timing offset value may include the maximum or minimum value that the UE can support. For smaller B F or F values, the phase offset (or phase error) or timing offset (or timing error) within the frequency layer can be smaller because the phase error or timing error of the UE can be easily controlled by the UE hardware. However, for larger B FFor example, the phase shift (or phase error) or timing shift (or timing error) among frequency layers may be larger because the phase error or timing error is not easily controlled by the UE hardware. Therefore, multiple phase shift or timing shift values ​​may be reported, each representing one F value or B value. F corresponds to the value.

[0070] The UE has processing power (N F ,T F ) but with different values ​​B F , and therefore one or more combinations (B F ,N F ,T F ) can be reported. b. Partial reporting of UE capabilities

[0071] In some embodiments, some of the parameters may be omitted from the report, for example, F or B F Only (or a combination of) the UE capabilities may be reported for multiple aggregated frequency layer PRS measurements by UE capability signaling. In such cases, the UE capabilities without signaling information to support multiple aggregated frequency layer PRS measurements may be defined as one or more of the following:

[0072] N F N, F, B F and at least one of B. In some embodiments, N F =N / f(F) or N F = N × f(F), where f(x) is a function of x. For example, f(F) = F, so N F = N / F. For another example, f(F) = ratio x F, where ratio is a decimal value (e.g., = 0.8). In some embodiments, N F = f(N,F). In some embodiments, N F =N×f(B F ,B). For example, f(BF ,B)=B / B F and therefore, N F =N×B / B F In some embodiments, N F =f(N,B F , B). In some embodiments, N F =N×f(F,B F , B). In some embodiments, N F =f(F,B F ,B,N).

[0073] TF may be determined based on T and at least one of F, BF, and B. In some embodiments, TF = T x f(F). For example, f(F) = F, and therefore, TF = T x F. In some embodiments, TF = f(T,F). In some embodiments, TF = T x f(BF,B). For example, f(BF,B) = BF / B, and therefore, TF = T x BF / B. In some embodiments, TF = f(BF,B,T). In some embodiments, TF = T x f(F,BF,B). In some embodiments, TF = f(F,BF,B,T).

[0074] R F R, F, B F and at least one of B. In some embodiments, R F = R × f(F). In some embodiments, R F = f(F,R). In some embodiments, R F =R×f(B F , B). In some embodiments, R F =f(B F ,B,R). In some embodiments, R F =f(B F ,B,R). In some embodiments, R F =R×f(F,B F , B). In some embodiments, R F =R×f(F,B F , B). In some embodiments, RF =f(F,B F ,B,R).

[0075] The main driving force for the above predefined relationship may be to save signaling overhead. Because the complexity and cost of the UE are higher for multiple aggregated frequency layer measurements, the processing power compared to single layer frequency measurements may be lower. Therefore, even based on the above predefined rules, the processing power N F ≦N, or T F ≦T or R F It can be ≦R. II. Processing Calculations a. Predefined rules regarding UE processing capabilities

[0076] In some embodiments, some of the parameters may be omitted from the report, and predefined rules regarding UE processing capabilities may also be omitted. F may be reported for multiple aggregated frequency layer PRS measurements for a band by UE capability signaling. In such a case, the duration K of the DL PRS symbols within a window of Pms for multiple aggregated frequency layers F ms, K, F', B F’ , and at least one of B. K may be the duration Kms of a DL PRS symbol within any window of Pms for single-layer PRS processing. F' may be the configured number of aggregated frequency layers. F' may be a function of the configured number of aggregated frequency layers. For example, for single-frequency layer PRS processing, F'=1, and for multiple aggregated frequency layer PRS processing, F'=factor (factor>1).

[0077] B F’ B may be the configured bandwidth of multiple aggregated frequency layers, which may or may not include gaps between frequency layers. F’may be a function of the configured bandwidth of multiple aggregated frequency layers, which may or may not include gaps between frequency layers. B may be the maximum bandwidth reported for a single frequency layer by UE capability signaling, as described above. Thus, K F K, F', B F’ , B. For example, K F = F' × K. In another embodiment, K F =K×f(B F’ ,B) (e.g., K F =K×B F’ / B) III. Measurement interval specifications

[0078] When multiple frequency layers are configured for a certain measurement (e.g., PRS measurement and RRM measurement) related to PRS measurement in positioning frequency layer i, when the measurement gap and processing time T have overlap between different positioning frequency layers, the total DL reference signal time difference (RSTD) measurement period T RSTD,Total can be defined as follows: [ka] As further defined in this section, where i is the index of the positioning frequency layer, L is the total number of positioning frequency layers, and T effect,i is the periodicity of the PRS-RSTD measurements in positioning frequency layer i.

[0079] T PRS-RSTD,i may be the measurement period for PRS RSTD measurements within the i positioning frequency layer, as defined below. [ka] In the formula, N RXBeam,i is the UE Rx beam sweep factor, and CSSF PRS,i is the carrier-specific scaling factor for positioning frequency layer i, and N sample is the number of PRS RSTD samples, and T lastis the measurement duration for the last PRS RSTD sample, including sampling and processing times. [ka] T PRS,i and MGRP i L, which is the least common multiple between PRS,i is the duration, [ka] is the maximum number of DL PRS resources in positioning frequency layer i configured in a slot, and N' is the UE capability in terms of the number of DL PRS resources it can handle in a slot, which may be R (the maximum number R of DL PRS resources the UE can handle in a slot).

[0080] For multiple aggregated frequency layer positioning measurements, the F aggregated frequency layers can be considered as one combined frequency layer. In such a case, the total DL RSTD measurement period T for PRS RSTD measurements within i positioning frequency layers is RSTD,Total and measurement period T PRS-RSTD,i The above formula for calculating T may not be changed. Specifically, one of the F aggregated frequency layers may be used for calculation and / or T PRS-RSTD,i Therefore, all other frequency layers can be reference frequency layers for T RSTD,Total and / or T PRS-RSTD,i cannot be used for the calculation of C. Transmission Reception Point (TRP) Identifier (ID) Reporting

[0081] In single frequency layer PRS measurements, the UE may report the TRP ID (dl-PRS-ID-r16), PRS resource ID, or PRS resource set ID to determine the reference or for positioning measurements.

[0082] A UE may be indicated by the network which set of downlink (DL) PRS resources can be used as a reference for DL ​​RSTD, DL PRS-RSRP, and UE Rx-Tx time difference measurements in the higher layer parameter nr-DL-PRS-ReferenceInfo-r16. The reference indicated to the UE by the network may also be used by the UE to determine how to apply the higher layer parameters nr-DL-PRS-expectedRSTD-r16 and nr-DL-PRS-expectedRSTD-uncerainty-r16.

[0083] The UE may expect a reference to be indicated each time the UE expects to receive a DL PRS. This reference, provided by nr-DL-PRS-ReferenceInfo-r16, may include a dl-PRS-ID-r16, a DL PRS resource set ID, and, optionally, a single DL PRS resource ID or a list of DL PRS resource IDs. The UE may use different DL PRS resources or different DL PRS resource sets to determine the reference for RSTD measurements, as long as the condition that the used DL PRS resources belong to a single DL PRS resource set is satisfied. If the UE chooses to use a different reference than that indicated by the network, the UE may be expected to report the dl-PRS-ID-r16, DL PRS resource ID, or DL ​​PRS resource set ID used to determine the reference.

[0084] The UE may be configured to report quality metrics corresponding to DL RSTD and UE Rx-Tx time difference measurements that include the following fields: (a) timingQualityValue-r16, which provides a best estimate of the measurement uncertainty, and (b) timingQualityResolution-r16, which specifies the resolution level used within the timingQualityValue-r16 field.

[0085] The UE may be expected to be configured with higher layer parameters nr-DL-PRS-expectedRSTD-r16, which defines the time offset relative to the received DL subframe timing at which the UE is expected to receive the DL PRS, and DL-PRS-expectedRSTD-uncertainty-r16, which specifies a search window around nr-DL-PRS-expectedRSTD-r16.

[0086] For DL ​​UE positioning measurement reporting within the higher layer parameters NR-DL-TDOA-SignalMeasurementInformation or NR-Multi-RTT-SignalMeasurementInformation, the UE may be configured to report the DL PRS resource ID or DL ​​PRS resource set ID associated with the DL PRS resource or DL ​​PRS resource set used in the step of determining the UE measured DL RSTD, UE Tx-Rx time difference.

[0087] For DL ​​RSTD, DL PRS-RSRP, and UE Rx-Tx time difference measurements, the UE can report the associated higher layer parameter nr-TimeStamp-r16. The nr-TimeStamp-r16 parameter can include the SFN and the slot number for subcarrier spacing. These values ​​may correspond to the reference provided by nr-DL-PRS-ReferenceInfo-r16.

[0088] In the case of multiple aggregated frequency layer positioning measurements and reporting, for reference determination, positioning measurements, or timestamp (nr-TimeStamp-r16) reporting, the UE may report only the TRP ID (dl-PRS-ID-r16), PRS resource ID, PRS resource set ID, or timestamp from one frequency layer of the multiple configured aggregated frequency layers. That is, one frequency layer of the multiple configured aggregated frequency layers may be assumed as the reference frequency layer for the others. The configured or reporting parameters corresponding to the reference frequency layer may be used for all aggregated FLs.

[0089] In short, for multiple aggregated frequency layer positioning measurements and reporting, one frequency layer can be configured or predefined or reported as the reference frequency layer for the others. The reference FL can be more than one, but should be less than the number of configured aggregated FLs.

[0090] The UE may be indicated by the network that DL PRS resources from only the reference FL (frequency layer) may be used as a reference for DL ​​RSTD, DL PRS-RSRP (reference signal received power) measurements, and UE Rx-Tx time difference measurements. The indicated resources may be the reference for all aggregated FLs.

[0091] The UE may report the dl-PRS-ID-r16, DL PRS resource ID, or DL ​​PRS resource set ID from the reference FL only, which is used to determine the criteria. The determined criteria can be used for all aggregated FLs. The UE may report the timestamp from the reference FL only. The timestamp can be used for all aggregated FLs. I. Priority rules

[0092] As discussed above, the UE capability signaling indicates F or B, which correspond to the maximum number of aggregated frequency layers and the maximum bandwidth of the aggregated frequency layers supported by the UE. F However, the network may include F' frequency layers for the aggregated frequency layers or the configured B F’ The bandwidth may be configured such that F'>F or B F’ >B F This may be because the PRS configuration may be broadcast information shared among many UEs.

[0093] To enable efficient positioning measurements, one approach is to provide the UE with a subset of F' frequency layers or bandwidths B F’ To let the network know the measurement bandwidth or frequency layer, the UE may determine a subset of the F' frequency layers to be measured or a bandwidth B F’ In some embodiments, the UE may report a subset of F' frequency layers. In some embodiments, the UE may report an identifier (ID) or a list of identifications of FLs. In some embodiments, the UE may report multiple PRS resource set IDs that are in FLs different from the configured FL. Because the set IDs are unique across different FLs, a subset of the F' frequency layers can be identified by a list of PRS resource set IDs. Specifically, for each positioning measurement, the UE may report multiple PRS resource set IDs that are from different aggregated frequency layers.

[0094] If multiple non-aggregated frequency layers are configured for the UE, the UE may select only one FL to measure and report measurement results. If the number of configured PRS resource sets or resources or TRPs (dl-PRS-IDs) in the selected FL exceeds the UE capabilities, the UE may drop PRS resource sets or resources or TRPs with lower priorities. For example, within a positioning frequency layer, DL PRS resources may be sorted in descending order of priority for measurements to be performed by the UE, and the reference indicated by nr-DL-PRS-ReferenceInfo is the highest priority for measurements.

[0095] The following priorities may be assumed: Up to 64 dl-PRS-IDs of a frequency tier may be sorted according to priority; Up to 2 DL PRS resource sets per dl-PRS-ID of a frequency tier may be sorted according to priority; In an actual positioning configuration, either aggregated or non-aggregated frequency tiers may be configured for the UE. The definition of the dropping rules may be unclear.

[0096] One approach may be to consider the associated aggregated frequency layers as one combined FL. The priority rules within the combined FL may be the same as for a single FL. PRS resources or resource sets or TRPs in multiple layers that need to be aggregated may have the same priority. The combined FL may be predefined with a higher or lower priority than a single-layer FL measurement.

[0097] When multiple combined FLs are configured, one approach may be to create a dedicated combined FL with a higher priority. In some embodiments, the dedicated combined FL may have a larger or smaller number of FLs. In some embodiments, the dedicated combined FL may have a larger or smaller aggregated bandwidth. In some embodiments, the dedicated combined FL may have a smaller phase or timing shift between FLs. D. Process for Positioning Using Multiple Frequency Layers

[0098] Referring now to Figure 6, depicted is a flow diagram of a method 600 of positioning using multiple frequency layers. The method 600 may be implemented using or performed by any of the components described above, such as the BS 102, the UE 104, the BS 202, and the UE 204, among others. In general overview, a first wireless communication device may configure aggregated positioning information (605). The first wireless communication device may provide a schedule (610). A second wireless communication device may receive the schedule (615). The second wireless communication device may perform aggregated positioning measurements (620). The second wireless communication device may transmit a report (625). The first wireless communication device may receive the report (630).

[0099] In more detail, the first wireless communication device (e.g., BS102, BS202, and LMF) may generate, set, or otherwise configure first aggregated positioning information (605). The first aggregated positioning information may be for a first aggregated positioning measurement within a first set of frequency layers. The first aggregated positioning information may define, specify, or identify a positioning reference signal (PRS) configuration for configuring F′ frequency layers or BF′ bandwidths for the aggregated frequency layers. The first aggregated positioning information may be associated with at least one of the first set of frequency layers. In some embodiments, at least one of the first set of frequency layers may correspond to or be a reference frequency layer for other (remaining) frequency layers in the first set. The reference frequency layer may be used for calculation of the first aggregated positioning measurement. In some embodiments, only the positioning information of the reference frequency layer may be used as the first aggregated positioning information.

[0100] The first wireless communication device may send, transmit, or otherwise provide signaling for scheduling to a second communication device (e.g., UE 104 and UE 204) (610). In some embodiments, the signaling may identify or include a schedule for a first positioning reference signal (RS) resource with a first resource identifier (ID) or a first resource set with a first resource set ID=I in a first frequency layer. In some embodiments, the signaling may identify or include a schedule for a second positioning RS resource with the first resource ID or a resource set with the first resource set ID on a second frequency layer. The first frequency layer and the second frequency layer may be from a first set of frequency layers. In some embodiments, a bandwidth portion (BWP) ID for the first RS resource or first resource set may be the same as that for the second RS resource or second resource set. In some embodiments, the bandwidth portion (BWP) ID for the first RS resource or first resource set may be different from the second RS resource set or second resource set.

[0101] The second wireless communication device may receive signaling from the first wireless communication device (615). The signaling may be for scheduling the second wireless communication device to perform aggregated positioning measurements. In response to receiving the signaling, the second wireless communication device may parse the signaling and identify the scheduling. Using the identification, the second wireless communication device may use PRS resources in accordance with the scheduling. The scheduling may specify use of a first positioning reference signal (RS) resource with a first resource identifier (ID) or a first resource set with a first resource set ID=I in a first frequency layer. In response, the second wireless communication device may activate the first positioning reference signal (RS) resource as specified by the scheduling. The scheduling may specify use of a second positioning RS resource with the first resource ID or a resource set with the first resource set ID in a second frequency layer as specified. In response, the second wireless communication device may activate the second positioning RS resource as specified.

[0102] The second wireless communication device may determine, perform, or otherwise implement aggregated positioning measurements (620). According to the configuration and scheduling, the second wireless communication device may implement second aggregated positioning measurements within a second set of frequency layers. The second aggregated positioning information may be capability signaling for the second wireless communication device. The second aggregated positioning information may define, prescribe, or identify F′ frequency layers corresponding to a maximum number of aggregated frequency layers or BF′ corresponding to a maximum bandwidth of the aggregated frequency layers supported by the second wireless communication device. In some embodiments, in the step of implementing aggregated positioning measurements, the second wireless communication device may identify or determine UE capabilities on a per-frequency layer basis. In some embodiments, the UE capabilities may identify or include, among other things, a maximum bandwidth (B), a DL PRS buffering capability, an (N,T) value combination, a maximum number of DL PRS resources supported by the second wireless communication device. In some embodiments, the UE capabilities may identify or include, among other things, a maximum bandwidth (B), a DL PRS buffering capability, an (N,T) value combination, a maximum number of DL PRS resources supported by the second wireless communication device, a maximum number of frequency layers, (N F ,T F ) values, the maximum number of DL PRS resources in a slot, and the phase or timing shift between aggregated frequency layers. F Value, T F value, and R F In some embodiments, in the step of performing measurements, the second wireless communication device may read, determine, or otherwise transmit, among other things, a receiving identifier (TRP ID), a PRS resource ID, or a PRS resource set ID, and other related information.

[0103] The second wireless communication device may provide, send, or otherwise transmit a report to the first wireless communication device (625). Using second aggregated positioning information identified from the measurements, the first wireless communication device may determine or generate the report. The report may include second aggregated positioning information for the second aggregated positioning measurements within the second set of frequency layers. In some embodiments, in generating the report, the second wireless communication device may perform the aggregated positioning measurements measured within the second set of frequency layers. In some embodiments, the second wireless communication device may send, provide, or otherwise transmit an indication of frequency layers or resources to be used in measurements for the aggregated positioning measurement report to the first wireless communication device. The indication may identify or include a subset of the first set of frequency layers or a subset of the set of positioning resource set identifiers (PRS-IDs). In some embodiments, the second wireless communication device may generate the indication using the second aggregated positioning information. Using the occurrence, the second wireless communications device may transmit an indication as part of an aggregated positioning measurement report.

[0104] A reference frequency layer from the first set of frequency layers or the second set of frequency layers may be used (by the first wireless communication device or the second wireless communication device) to derive positioning information. In some embodiments, the positioning information may identify or include a set of downlink (DL) positioning reference signal (PRS) resources. The set of DL PRS resources may be used as a reference for measurements of DL reference signal time difference (RSTD), DL PRS reference signal received power (PRS-RSRP), and UE receive-transmit (Rx-Tx) time difference. In some embodiments, the positioning information may identify or include a transmit-receive point (TRP) identifier (ID), one or more DL PRS resource IDs, or DL ​​PRS resource set IDs used to determine the reference for the measurements. In some embodiments, the positioning information may identify or include timestamp parameters including a single frequency network (SFN) and a slot number for subcarrier spacing (SCS). In some embodiments, the reference frequency layer may identify or include a total downlink (DL) reference signal time difference (RSTD) measurement period (T RSTD,Total In some embodiments, the reference frequency layer may be used to calculate the measurement period (T) for DL ​​positioning reference signal (PRS) reference signal received power. PRS-RSTD,i In the calculating step, the other frequency layer of the first or second plurality of frequency layers may not be used.

[0105] In some embodiments, the second aggregated positioning information of the report may identify or include a user equipment (UE) capability report. In some embodiments, the UE capability report may include a maximum bandwidth (B ) of the aggregation of the second set of frequency layers. F ) may identify or include. In some embodiments, B Fmay correspond to or include one or more frequency gaps between pairs of frequency layers in the second set of frequency layers. In some embodiments, the UE capability report may identify or include a maximum number of frequency layers (F) in the aggregation. In some embodiments, the UE capability report may include a time duration (T) in milliseconds (ms) for the aggregation measurement. F ) is the first duration of a downlink (DL) positioning reference signal (PRS) symbol in ms that is processed every N F ) may identify or include. In some embodiments, N F ≦N or T F ≧T, and N may be a first duration of a DL PRS symbol in milliseconds (ms) processed per second duration (T) in ms for measurements of a single frequency layer. In some embodiments, the UE capability report may identify or include a maximum or minimum phase or timing shift between frequency layers in the aggregation.

[0106] In some embodiments, the second aggregated positioning information may identify or include user equipment (UE) capabilities for an aggregate of a second set of frequency layers. The UE capabilities may be based on a UE capability report for a single frequency layer of the second set of frequency layers. For example, a reference frequency layer may be used to determine or generate the UE capability report. In some embodiments, the UE capability report may include N F N, F, B F or at least one of B. In some embodiments, T F T, F, B F or at least one of B. In some embodiments, R F R, F, B F or at least one of B. In some embodiments, N F is the time duration (T) in milliseconds (ms) for aggregate measurements. FIn some embodiments, F may be the first duration of a downlink (DL) positioning reference signal (PRS) symbol in ms that is processed per second duration (T) in ms for measurements on one frequency layer. In some embodiments, B may be the maximum bandwidth of one frequency layer. In some embodiments, B may be the first duration of a DL PRS symbol in ms that is processed per second duration (T) in ms for measurements on one frequency layer. In some embodiments, B may be the maximum bandwidth of one frequency layer. F is the maximum bandwidth (B F ) may also be used.

[0107] In some embodiments, the DL PRS may be used as a reference for determining or performing aggregated positioning measurements. In some embodiments, a duration K in milliseconds (ms) of a downlink (DL) positioning reference signal (PRS) symbol within a time window (P) in ms for an aggregation of frequency layers from a first or second plurality of frequency layers may be determined. F But K, F', B F’ or at least one of B. In some embodiments, K F = F'k × K. In some embodiments, K F is K×(B F’ and B). In some embodiments, K may be the duration in ms of a DL PRS symbol within a time window in ms for PRS processing of one frequency layer. In some embodiments, F may be the maximum number of frequency layers in the aggregation. In some embodiments, F' may be the configured number of frequency layers in the aggregation or a function of the configured number of frequency layers. In some embodiments, B F’ B may be a function of the configured bandwidth of the aggregate, the configured bandwidth, and in some embodiments, B may be the maximum bandwidth of one frequency tier.

[0108] The first wireless communication device may receive a report from the second wireless communication device (630). In response to receiving, the first wireless communication device may parse the report and identify second aggregated positioning information. From the report, the second aggregated positioning information may be associated with at least one of the second set of frequency layers. The second aggregated positioning information may be associated with at least one of the second set of frequency layers. In some embodiments, at least one of the second set of frequency layers may correspond to or be a reference frequency layer for other (remaining) frequency layers in the second set. The reference frequency layer may be used for calculation of the aggregated positioning measurements. In some embodiments, only the positioning information of the reference frequency layer may be used as the second aggregated positioning information. In some embodiments, the first wireless communication device may read, identify, or otherwise receive an indication of a frequency layer or resource to be used in measurements for the aggregated positioning measurement report from the second wireless communication device. The indication may identify or include a subset of the first set of frequency layers or a subset of the set of positioning resource set identifiers (PRS-IDs). In some embodiments, the first wireless communication device may receive the indication as part of a report from the second wireless communication device.

[0109] While various embodiments of the present solution have been described above, it should be understood that they are presented by way of example only, and not by way of limitation. Similarly, various diagrams may depict example architectures or configurations, which are provided to enable those skilled in the art to understand example features and functionality of the present solution. However, such skilled artisans will understand that the present solution is not limited to the example architectures or configurations shown, but may be implemented using various alternative architectures and configurations. Additionally, as will be understood by those skilled in the art, one or more features of one embodiment can be combined with one or more features of another embodiment described herein. Thus, the scope and scope of the present disclosure should not be limited by any of the example embodiments described above.

[0110] It should also be understood that any designation of elements herein using designations such as "first," "second," etc., generally does not limit the quantity or order of those elements. Rather, these designations may be used herein as a convenient means of distinguishing between two or more elements or instances of an element. Thus, the designation of a first and a second element does not imply that only two elements may be employed or that the first element must precede the second element in some manner.

[0111] Additionally, those skilled in the art will understand that information and signals may be represented using any of a variety of different technologies and techniques. For example, the data, instructions, commands, information, signals, bits, and symbols that may be referenced in the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0112] Those skilled in the art will further understand that any of the various illustrative logic blocks, modules, processors, means, circuits, methods, and functions described in connection with the aspects disclosed herein may be implemented by electronic hardware (e.g., digital implementations, analog implementations, or a combination of the two), firmware, various forms of programs or design code incorporating instructions (which may be referred to herein for convenience as “software” or “software modules”), or any combination of these techniques. To clearly illustrate this interchangeability of hardware, firmware, and software, the various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software, or a combination of these techniques, depends on the particular application and design constraints imposed on the overall system. Those skilled in the art may implement the described functionality in various ways for each particular application, but such implementation decisions do not cause a departure from the scope of the present disclosure.

[0113] Furthermore, those skilled in the art will understand that the various illustrative logic blocks, modules, devices, components, and circuits described herein may be implemented in or by integrated circuits (ICs), which may include general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, or any combination thereof. The logic blocks, modules, and circuits may further include antennas and / or transceivers to communicate with various components within a network or device. The general-purpose processor may be a microprocessor, but alternatively, the processor may be any conventional processor, controller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other suitable configuration, to perform the functions described herein.

[0114] If implemented in software, the functions can be stored as one or more instructions or code on a computer-readable medium. Thus, the steps of a method or algorithm disclosed herein can be implemented as software stored on a computer-readable medium. Computer-readable media includes both computer storage media and communication media, including any medium that can enable transfer of a computer program or code from one geographic location to another. A storage medium can be any available medium that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage, or other magnetic storage devices, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer.

[0115] As used herein, the term "module" refers to software, firmware, hardware, and any combination of these elements for performing the associated functions described herein. Additionally, for purposes of discussion, various modules are described as discrete modules; however, as will be apparent to one skilled in the art, two or more modules may be combined to form a single module that performs the associated functions according to embodiments of the present solution.

[0116] Additionally, memory or other storage and communication components may be employed in embodiments of the solution. It should be understood that, for purposes of clarity, the above description describes embodiments of the solution with reference to different functional units and processors. However, it will be apparent that any suitable distribution of functionality between different functional units, processing logic elements, or domains may be used without detracting from the solution. For example, functionality illustrated as being performed by separate processing logic elements or controllers may be performed by the same processing logic element or controller. Thus, references to specific functional units do not indicate a strict logical or physical structure or organization, but merely references to suitable means for providing the described functionality.

[0117] Various modifications to the embodiments described in this disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the present disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the novel features and principles disclosed herein, as recited in the following claims.

Claims

1. 1. A method comprising: configuring, by the first communication device, for the second communication device, first aggregated positioning information for aggregated positioning measurements on a first plurality of frequency layers; transmitting, by the first communication device, signaling to the second communication device for scheduling the aggregated positioning measurements; receiving, by the first communication device, a report from the second communication device, the report including second aggregated positioning information for aggregated positioning measurements on a second plurality of frequency layers; Including, the first aggregated positioning information is associated with at least one of the first plurality of frequency layers, and the second aggregated positioning information is associated with at least one of the second plurality of frequency layers; The method, wherein transmitting the signaling further includes indicating, in higher layer parameters, a set of downlink (DL) positioning reference signal (PRS) resources for the aggregated positioning measurements.

2. 2. The method of claim 1, wherein the report includes an indication that the first plurality of frequency layers, or first plurality of positioning resource set identifiers (IDs) configured by the first communication device, are measured for the aggregated positioning measurement report.

3. The method further includes receiving a user equipment (UE) capability report, the first communication device receiving the UE capability report, the UE capability report comprising: the maximum bandwidth (B) of the aggregate of the second plurality of frequency layers Ｆ ), the maximum number of frequency layers in the aggregation (F); or The time duration (T) in milliseconds (ms) for the aggregated positioning measurements Ｆ the first duration in ms of DL PRS symbols processed per N Ｆ ) The method of claim 1 , comprising at least one of:

4. The UE capability report may include a maximum number of DL PRS resources (R Ｆ 4. The method of claim 3, further comprising:

5. N Ｆ ≦N or T Ｆ ≧T, and N is the first duration of a DL PRS symbol in milliseconds (ms) processed per second duration (T) in ms for single frequency layer measurements, or R Ｆ 5. The method of claim 4, wherein R is the maximum number of DL PRS resources that the second communication device can process for measurements on the single frequency layer.

6. 2. The method of claim 1, wherein a transmit-receive point (TRP) or PRS resource set in the aggregation of the second plurality of frequency layers has a higher priority than a priority of measurements on a single frequency layer.

7. The method of claim 6 , wherein up to two of the DL PRS resources for the TRP in the aggregation of the second plurality of frequency layers are sorted according to priority.

8. 1. A method comprising: receiving, by the second communication device, from the first communication device, first aggregated positioning information for aggregated positioning measurements on a first plurality of frequency layers; receiving, by the second communication device, signaling from the first communication device for scheduling the aggregated positioning measurements; transmitting, by the second communication device, to the first communication device, a report including second aggregated positioning information for the aggregated positioning measurements on a second plurality of frequency layers; Including, the first aggregated positioning information is associated with at least one of the first plurality of frequency layers, and the second aggregated positioning information is associated with at least one of the second plurality of frequency layers; The method, wherein receiving the signaling further includes receiving a set of downlink (DL) positioning reference signal (PRS) resources for the aggregated positioning measurements in higher layer parameters.

9. 10. The method of claim 8, wherein the report includes an indication that the first plurality of frequency layers, or first plurality of positioning resource set identifiers (IDs) configured by the first communication device, are measured for the aggregated positioning measurement report.

10. The second communication device may further include transmitting a user equipment (UE) capability report, the UE capability report comprising: the maximum bandwidth (B) of the aggregate of the second plurality of frequency layers Ｆ ), the maximum number of frequency layers in the aggregation (F); or The time duration (T) in milliseconds (ms) for the aggregated positioning measurements Ｆ the first duration in ms of DL PRS symbols processed per N Ｆ ) The method of claim 8 , comprising at least one of:

11. The UE capability report may include a maximum number of DL PRS resources (R Ｆ 11. The method of claim 10, further comprising:

12. N Ｆ ≦N or T Ｆ ≧T, and N is the first duration of a DL PRS symbol in milliseconds (ms) processed per second duration (T) in ms for single frequency layer measurements, or R Ｆ 9. The method of claim 8, wherein R is the maximum number of DL PRS resources that the second communication device can process for measurements on the single frequency layer.

13. 9. The method of claim 8, wherein a transmit-receive point (TRP) or PRS resource set in the aggregation of the second plurality of frequency layers has a higher priority than a priority of measurements on a single frequency layer.

14. The method of claim 13 , wherein up to two of the DL PRS resources for the TRP in the aggregation of the second plurality of frequency layers are sorted according to priority.

15. a first communication node, At least one processor Equipped with The at least one processor Configuring first aggregated positioning information for aggregated positioning measurements on a first plurality of frequency layers for a second communication device; transmitting, via a transceiver, to the second communication device, signaling for scheduling the aggregated positioning measurements; receiving, via the transceiver, from the second communication device, a report including second aggregated positioning information for aggregated positioning measurements on a second plurality of frequency layers; and the first aggregated positioning information is associated with at least one of the first plurality of frequency layers, and the second aggregated positioning information is associated with at least one of the second plurality of frequency layers; The first communication node, wherein transmitting the signaling further includes indicating in higher layer parameters a set of downlink (DL) positioning reference signal (PRS) resources for the aggregated positioning measurements.

16. a second communication node, At least one processor Equipped with The at least one processor receiving, via the transceiver, from a first communication device, first aggregated positioning information for aggregated positioning measurements on a first plurality of frequency layers; receiving, via the transceiver, from the first communications device, signaling for scheduling the aggregated positioning measurements; transmitting, via the transceiver, to the first communication device, a report including second aggregated positioning information for aggregated positioning measurements on a second plurality of frequency layers; and the first aggregated positioning information is associated with at least one of the first plurality of frequency layers, and the second aggregated positioning information is associated with at least one of the second plurality of frequency layers; The second communication node, wherein receiving the signaling further includes receiving a set of downlink (DL) positioning reference signal (PRS) resources for the aggregated positioning measurements in higher layer parameters.

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