Using multiple frequency layers for positioning

Abstract

A system, method, apparatus, or computer-readable medium for positioning using multiple frequency layers is presented. A first communication device may configure first aggregate positioning information for aggregate positioning measurements in a first plurality of frequency layers. The first communication device may receive a report from a second communication device including second aggregate positioning information for aggregate positioning measurements in a second plurality of frequency layers. The first aggregate positioning information may be associated with at least one of the first plurality of frequency layers, and the second aggregate positioning information may be associated with at least one of the second plurality of frequency layers.

Description

Technical Field

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

[0002] The third generation partnership project (3GPP), a standardization organization, is currently specifying a new radio interface called 5G New Radio (5GNR) and the next generation packet core network (NG-CN or NGC). 5G NR will have three main components: 5G access network (5G-AN), 5G core network (5GC) and user equipment (UE). In order to facilitate the implementation of different data services and requirements, the elements of 5GC (also known as network functions) have been simplified, and some of them are software-based, allowing them to be adapted as needed. Summary of the invention

[0003] The example embodiments disclosed herein are directed to solving problems related to one or more of the problems presented in the prior art, and to providing additional features that will become apparent when referring to the following detailed description in conjunction with the accompanying drawings. According to various embodiments, example systems, methods, devices, and computer program products are disclosed herein. However, it should be understood that these embodiments are presented by way of example and are not restrictive, and it will be apparent to those of ordinary skill in the art who have read this disclosure that various modifications may be made to the disclosed embodiments while remaining within the scope of this disclosure.

[0004] At least one aspect is directed to a system, a method, an apparatus, or a computer-readable medium. A first communication device may configure first aggregate positioning information, the first aggregate positioning information being used for aggregate positioning measurements in a first plurality of frequency layers. The first communication device may receive a report including second aggregate positioning information from a second communication device, the second aggregate positioning information being used for aggregate positioning measurements in a second plurality of frequency layers. The first aggregate positioning information may be associated with at least one of the first plurality of frequency layers, and the second aggregate 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 frequency layers may be a reference frequency layer for other frequency layers in the first or second frequency layers. In some embodiments, only the positioning information of the reference frequency layer may be used as the first aggregate positioning information or the second aggregate positioning information.

[0006] In some embodiments, the positioning information of the reference frequency layer may include at least one of the following: a set of downlink (DL) positioning reference signal (PRS) resources, which will be used as a reference for measurement 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) used to determine the reference for measurement, one or more DL PRS resource IDs or DL ​​PRS resource set IDs; or a timestamp parameter, which includes a single frequency network (SFN) and a time slot number for a subcarrier spacing (SCS).

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

[0008] In some embodiments, the second aggregate positioning information may include a user equipment (UE) capability report, the user equipment (UE) capability report including at least one of the following: a maximum bandwidth (B) of the aggregation of the second plurality of frequency layers; F ); the maximum number of frequency layers in the aggregation (F); the second duration in milliseconds (ms) for the measurement of the aggregation (T F ) is processed once, in ms, for the first duration (N) of a downlink (DL) positioning reference signal (PRS) symbol F ); or the maximum or minimum value of the phase offset or timing offset between frequency layers in the aggregation.

[0009] In some embodiments, B F One or more frequency intervals between pairs of frequency layers in the second plurality of frequency layers may be included. F ≤N or T F ≥T, and N may be a first duration of a DL PRS symbol in milliseconds (ms) processed every second duration (T) in ms for measurement of a single frequency layer.

[0010] In some embodiments, the second aggregate positioning information may include aggregated user equipment (UE) capabilities for a second plurality of frequency layers and may be based on UE capability reports for individual frequency layers of the second plurality of frequency layers.

[0011] In some embodiments, N FAccording to N and F, B F or B to determine at least one of T F According to T and F, B F or at least one of B to determine; or R F According to F, B F or B and R. In some embodiments, N F It can be a second duration (T F ), F may be the maximum number of frequency layers in the aggregation, N may be the first duration of a DL PRS symbol in ms that is processed every second duration (T) in ms for measurement of one frequency layer, and B may be the maximum bandwidth of one frequency layer, B F The maximum bandwidth (B) of the aggregation of the second plurality of frequency layers may be F ).

[0012] In some embodiments, a duration K of a downlink (DL) positioning reference signal (PRS) symbol in milliseconds (ms) within a time window (P) in milliseconds (ms) for an aggregation of frequency layers from the first plurality of frequency layers or the second plurality of frequency layers. F , can be obtained by F', B F 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 an aggregation; F' may be the configured number of frequency layers in an aggregation, or a function of the configured number of frequency layers, and B F ' may be the aggregated configured bandwidth, is a function of the configured bandwidth, and B may be the maximum bandwidth of a frequency layer. In some embodiments, K F =F'*K. In some embodiments, K F It can be K times B F ' and B's function.

[0013] In some embodiments, the reference frequency layer may be used to calculate at least one of the following: a total downlink (DL) reference signal time difference (RSTD) measurement period (T RSTD,Total ) or the measurement period (T PRS-RSTD,i ), and other frequency layers in the first plurality of frequency layers or the second plurality of frequency layers cannot be used.

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

[0015] At least one aspect relates to a system, a method, an apparatus, or a computer-readable medium. A second communication device may send a report including second aggregate positioning information to a first communication device, the second aggregate positioning information being used for aggregate positioning measurements in a second plurality of frequency layers. The first communication device may configure first aggregate positioning information, the first aggregate positioning information being used for aggregate positioning measurements in a first plurality of frequency layers. The first aggregate positioning information may be associated with at least one of the first plurality of frequency layers, and the second aggregate positioning information may be associated with at least one of the second plurality of frequency layers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Various example 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 depict only example 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 breadth, scope or applicability of the present solution. It should be noted that for clarity and ease of illustration, these drawings are not necessarily drawn to scale.

[0017] Figure 1 An example cellular communication network is shown in which the techniques disclosed herein may be implemented according to an embodiment of the present disclosure;

[0018] Figure 2 A block diagram showing an example base station and user equipment terminal according to some embodiments of the present disclosure is shown;

[0019] Figure 3 A block diagram illustrating specification of a scheduling grant from a wireless communication node for scheduling multiple resource sets in different carriers for positioning having the same resource set identifier is shown in accordance with an illustrative embodiment;

[0020] Figure 4 shows a block diagram of a medium access control element (MAC-CE) for positioning sounding reference signal (SRS) activation or deactivation according to an illustrative embodiment;

[0021] Figure 5 A block diagram showing bandwidth with frequency spacing between multiple frequency layers in accordance with an illustrative embodiment; and

[0022] Figure 6 A flow chart of a method for positioning using multiple frequency layers is shown in accordance with an illustrative embodiment. DETAILED DESCRIPTION

[0023] Various example embodiments of the present solution are described below with reference to the accompanying drawings to enable a person of ordinary skill in the art to make and use the present solution. As will be apparent to a person of ordinary skill in the art, after reading this disclosure, various changes or modifications may be made to the examples described herein without departing from the scope of the present solution. Therefore, the present solution is not limited to the example embodiments and applications described and illustrated herein. In addition, the specific order or hierarchy of steps in the methods disclosed herein are merely example methods. Based on design preferences, the specific order or hierarchy of steps of the disclosed methods or processes may be rearranged while remaining within the scope of the present solution. Therefore, a person of ordinary skill in the art should understand that the methods and techniques disclosed herein present various steps or actions in a sample order, and that the present solution is not limited to the specific order or hierarchy presented, unless otherwise expressly stated.

[0024] 1. Mobile communication technology and environment

[0025] Figure 1 An example wireless communication network and / or system 100 is shown in which the techniques disclosed herein may be implemented according to an embodiment of the present disclosure. In the discussion below, 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 is referred to herein as "network 100". This example network 100 includes a base station 102 (hereinafter referred to as "BS 102"; also referred to as a wireless communication node) and a user equipment terminal 104 (hereinafter referred to as "UE 104"; also referred to as a wireless communication device) that may communicate with each other via a communication link 110 (e.g., a wireless communication channel), and a cluster of cells 126, 130, 132, 134, 136, 138, and 140 covering a geographic area 101. In Figure 1 1, BS 102 and 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 within its allocated bandwidth to provide adequate wireless coverage to its intended users.

[0026] For example, BS 102 may operate under an allocated channel transmission bandwidth to provide adequate coverage to UE 104. BS 102 and 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 the present disclosure, BS 102 and UE 104 are described herein as non-limiting examples of "communication nodes" that may generally practice the methods disclosed herein. According to various embodiments of the present solution, such communication nodes may be capable of wireless and / or wired communications.

[0027] Figure 2 A block diagram of an example wireless communication system 200 for sending and receiving wireless communication signals (e.g., OFDM / OFDMA signals) according to some embodiments of the present solution is shown. The system 200 may include components and elements configured to support known or conventional operating features that do not require detailed description herein. In an illustrative embodiment, the system 200 may be used in applications such as Figure 1 Communicate (eg, send and receive) data symbols in a wireless communication environment such as the wireless communication environment 100 , as described above.

[0028] The system 200 generally includes a base station 202 (hereinafter referred to as "BS 202") and a user equipment terminal 204 (hereinafter referred to as "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 to each other via a data communication bus 220 as needed. 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 to each other via a data communication bus 240 as needed. The BS 202 communicates with the UE 204 via a communication channel 250, which can be any wireless channel or other medium suitable for the transmission of data described herein.

[0029] As will be appreciated by those skilled in the art, the system 200 may also include Figure 2Any number of modules other than the modules shown in . It will be appreciated by those skilled in the art that the various illustrative blocks, modules, circuits, and processing logic described in conjunction with the embodiments disclosed herein can be implemented in hardware, computer-readable software, firmware, or any actual combination thereof. In order to clearly illustrate the interchangeability and compatibility of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps are generally described according to their functions. Whether such functions are implemented as hardware, firmware, or software may depend on specific applications and design constraints imposed on the entire system. Those familiar with the concepts described herein may implement such functions in a manner suitable for each specific application, but the decision of such an implementation should not be interpreted as limiting the scope of the present disclosure.

[0030] According to some embodiments, the UE transceiver 230 may be referred to herein as an "uplink" transceiver 230, which includes a radio frequency (RF) transmitter and an RF receiver, each including circuitry coupled to an antenna 232. A duplex switch (not shown) may alternatively couple the uplink transmitter or receiver to the uplink antenna in a time duplex manner. Similarly, according to some embodiments, the BS transceiver 210 may be referred to herein as a "downlink" transceiver 210, which includes an RF transmitter and an RF receiver, each including circuitry coupled to an antenna 212. The downlink duplex switch may alternatively couple the downlink transmitter or receiver to the downlink antenna 212 in a time duplex manner. The operation of the two transceiver modules 210 and 230 may be coordinated in time so that while the downlink transmitter is coupled to the downlink antenna 212, the uplink receiver is coupled to the uplink antenna 232 for receiving transmissions over the wireless transmission link 250. Instead, the operation of the two transceivers 210 and 230 may be coordinated in time such that while the uplink transmitter is coupled to the uplink antenna 232, the downlink receiver is coupled to the downlink antenna 212 for receiving transmissions on the wireless transmission link 250. In some embodiments, there is tight time synchronization with minimal guard times between changes in duplex direction.

[0031] The UE transceiver 230 and the base station transceiver 210 are configured to communicate via a wireless data communication link 250 and cooperate with an appropriately configured RF antenna device 212 / 232 capable of supporting a specific wireless communication protocol and modulation scheme. In some illustrative embodiments, the UE transceiver 210 and the base station transceiver 210 are configured to support industry standards such as Long Term Evolution (LET) and emerging 5G standards. However, it should be understood that the present disclosure is not necessarily limited to specific standards and associated protocols in application. On the contrary, the UE transceiver 230 and the base station transceiver 210 can be configured to support alternative or additional wireless data communication protocols, including future standards or variants thereof.

[0032] According to various embodiments, BS202 may be, for example, an evolved node B (eNB), a serving BS, a target BS, a femto station or a micro station. In some embodiments, UE 204 may be embodied in various types of user equipment such as mobile phones, smart phones, personal digital assistants (PDAs), tablet computers, laptop computers, wearable computing devices, etc. Processor modules 214 and 236 may be implemented or implemented using a general-purpose processor, a content addressable memory, a digital signal processor, an application specific integrated circuit, a field programmable gate array, any suitable programmable logic device, a discrete gate or transistor logic, a discrete hardware component, or any combination thereof designed to perform the functions described herein. In this way, the processor may be implemented as a microprocessor, a controller, a microcontroller, a state machine, etc. The processor may also be implemented as a combination of computing devices, such as a combination of a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors combined with a digital signal processor core, or any other such configuration.

[0033] In addition, the steps of the methods or algorithms described in conjunction with the embodiments disclosed herein may be directly embodied in hardware, firmware, software modules executed by processor modules 214 and 236, respectively, or in any practical combination thereof. Memory modules 216 and 234 may be implemented as RAM memory, flash memory, ROM read-only memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, 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, so 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 into their respective processor modules 210 and 230. In some embodiments, memory modules 216 and 234 may each include a cache memory for storing temporary variables or other intermediate information during the 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.

[0034] The network communication module 218 generally represents the hardware, software, firmware, processing logic and / or other components of the BS 202 that enable bidirectional communication 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 communication module 218 can be configured to support Internet or WiMAX services. In a typical deployment, but not limited to this, the network communication module 218 provides an 802.3 Ethernet interface so that the base station transceiver 210 can communicate with a traditional computer network based on Ethernet. In this way, the network communication module 218 may include a physical interface for connecting to a computer network (e.g., a Mobile Switching Center (MSC)). The terms "configured for", "configured to" and their variations as used herein with respect to a specified operation or function refer to a device, component, circuit, structure, machine, signal, etc., which is physically constructed, programmed, formatted and / or arranged to perform a specified operation or function.

[0035] The Open Systems Interconnection (OSI) model (referred to herein as the "Open Systems Interconnection Model") is a concept and logical layout that defines network communications used by systems (e.g., wireless communication devices, wireless communication nodes) that are open to interconnection and communication with other systems. The model is divided into seven subcomponents or layers, each of which represents a conceptual set of services provided to the layers above and below it. The OSI model also defines a logical network and effectively describes computer packet transmission by using different layer protocols. The OSI model may also be referred to as a seven-layer OSI model or a seven-layer model. In some embodiments, the first layer may be a physical layer. In some embodiments, the second layer may be a media access control (MAC) layer. In some embodiments, the third layer may be a radio link control (RLC) layer. In some embodiments, the fourth layer may be a packet data convergence protocol (PDCP) layer. In some embodiments, the fifth layer may be a radio resource control (RRC) layer. In some embodiments, the sixth layer may be a non-access (NSA) layer or an Internet Protocol (IP) layer, and the seventh layer is another layer.

[0036] 2. Systems and methods for positioning using multiple frequency layers

[0037] To improve positioning accuracy, positioning reference signals (PRS) transmitted in multiple frequency layers may be aggregated. One signaling (e.g., downlink control information (DCI) or media access control control element (MAC-CE)) may schedule a positioning reference signal (RS) resource with a resource identifier (ID) = i, a resource set ID = i in frequency layer #x, and schedule 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 associated or may be in the same frequency layer group.

[0038] The UE may report the UE capabilities for single layer PRS processing and aggregated frequency layer processing for a frequency band. The capabilities for single layer and F aggregated layers may satisfy several conditions (e.g., NF<N,TF> T). The UE capabilities or configuration parameters for the aggregated FL may also be determined by the UE capabilities or configuration parameters for the single-layer FL (eg, processing duration KF=F'*K).

[0039] Positioning services may be very common among users outdoors or indoors. In outdoor scenarios, GPS positioning can be used. In indoor situations, GPS signal power may be too weak to obtain accurate positioning estimates. To address these shortcomings, wireless correlation positioning solutions such as time difference based positioning solutions can be used. However, the frequency layer of the positioning reference signal may be transmitted in a single frequency layer with limited bandwidth, and further leads to accuracy limitations.

[0040] A. Scheduling grant for scheduling multiple resource sets in different carriers

[0041] To improve positioning accuracy, a larger bandwidth for positioning reference signals (RS) can be used. One solution may be to aggregate positioning RS reception in multiple frequency layers. A frequency layer may also be a serving cell or component carrier. For non-periodic or semi-persistent positioning RS, physical layer signaling (e.g., DCI or MAC CE) may trigger or activate the positioning RS.

[0042] Reference now Figure 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 for positioning with the same resource set identifier. To save signaling overhead, one signaling (e.g., DCI or MAC CE) may schedule a positioning RS resource with resource ID=i or a resource set with resource set ID=i in frequency layer #x, while 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 may be in the same frequency layer group.

[0043] 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 in a frequency layer group. Positioning RS resources in different frequency layers can have the same resource ID. Positioning RS resource sets in different frequency layers scheduled by a single signaling can also have the same resource set ID. In addition, the bandwidth part (BWP) ID of these positioning RS resources or resource sets scheduled by signaling can be the same. As shown, one scheduling grant (e.g., DCI or MAC CE) from a wireless communication node (e.g., BS or gNB) can be used to schedule multiple SRS resource sets in different carriers for positioning with the same resource set ID.

[0044] Reference now Figure 4, depicted is a block diagram of a media access control element (MAC-CE) 400 for positioning sounding reference signal (SRS) activation or deactivation. For a semi-persistent SRS resource set for positioning, a MAC-CE may activate a positioning SRS resource set as shown (e.g., based on 3G GPP TS 38.321). A fixed peer (SP) positioning SRS activation or deactivation MAC CE may be identified by a MAC subheader with an extended logical channel identifier (eLCID). The MAC-CE may be of variable size with the following fields.

[0045] The A / D field 405 may indicate whether the indicated SP positioning SRS resource set is to be activated or deactivated. This field may be set to 1 to indicate activation, otherwise the field may indicate deactivation.

[0046] The Cell ID field 410 for positioning SRS resource sets 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 i 410 is set to 0, this field may also indicate the identity of the serving cell. The serving cell field 410 may contain all resources indicated by the spatial relationship of the resource IDi field (if present). The length of this field may be 5 bits.

[0047] The C field 430 may indicate whether or not octets containing one or more resource serving cell ID fields 410 and one or more resource BWPID fields 415 are present within the field spatial relationship of resource ID i, in addition to the spatial relationship resource IDi 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 one or more resource serving cell ID fields 410 and one or more resource BWPID fields 415 in the spatial relationship field of resource IDi may be present. Otherwise, if the 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 do not exist.

[0048] 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.

[0049] The positioning SRS resource set ID I field 440 may indicate the SP positioning SRS resource set identified by SRS-PosResourceSetId=i, which is to be activated or deactivated. The length of this field may be 4 bits.

[0050] The spatial relation for resource IDi of the Resource Idi 445A–N fields may only be present if the MAC CE is used for activation (e.g., the A / D field 405 may be set to 1). M may be the total number of one or more positioning SRS resources configured under the SP positioning SRS resource set indicated by the Positioning SRS Resource Set ID field. There may be four types of spatial relation for resource IDi, which are indicated by the F (F0 and F1) fields within. The fields within the spatial relation for resource IDi may be used for 4 types of spatial relation for resource IDi.

[0051] The S field 425 may indicate whether a field for the spatial relationship of resource IDi used to locate SRS resource IDi within the SRS resource set exists. If this field is set to 1, the fields for the spatial relationship of resource IDi may exist; otherwise, they may not exist. In addition, the R reserved bit 420 may be set to 0.

[0052] Therefore, the enhancement may be that the MAC CE also activates or deactivates the SRS resource set with set ID = i in some serving cells or CCs associated with the serving cell Ci. The association may be configured by higher-layer signaling (e.g., RRC signaling) or by signaling notified by a location management function (LMF). In addition, the BWP IDs of these SRS resource sets in the associated serving cells (groups of carrier components (CCs)) may be the same. Therefore, one MAC CE may be used to activate or deactivate an SRS resource set so as to perform positioning in the CC group using the same set ID and the same BWP ID. In other words, N SRS resource sets with the same resource set ID, BWP ID for positioning may 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.

[0053] For greater flexibility, associations or CC groups may be configured per SRS resource set or per CC or per frequency layer. For example, for SRS resource set i in a serving cell (or frequency layer or CC) Ci, a first set of CC indices may be configured. For SRS resource set j in a serving cell (or frequency layer or CC) Cj, a second set of CC indices may be configured. In this notation, i may not be equal to j or Ci may not be equal to Cj. For example, i may not be equal to j, but Ci=Cj. If 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. If 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.

[0054] 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 set of CC indices may be configured. For a serving cell (or frequency layer or CC) Cj, a second set of CC indices may be configured. If an 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. If an 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.

[0055] A similar method can also be used for other RS ​​including downlink (DL) positioning RS. For DL ​​positioning RS, the serving cell or CC can be replaced by a frequency layer. Based on this method, one scheduling grant can 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.

[0056] The timing offset between the scheduling grant and the positioning RS transmission in each frequency layer or CC can be based on at least one of the following parameters: the maximum or minimum subcarrier spacing between frequency layers in the frequency layer group; and the maximum or minimum value among the configured or indicated timing offsets for positioning RS transmission in the frequency layer group. For example, a DCI in time slot n can trigger two positioning RS resource sets, both of which have set ID i in CC0 and CC1. In this case, the time slot offset configured for the RS resource set in CC0 is k1, and the time slot offset configured for the RS resource set in CC1 can be k2. The subcarrier spacing of CC0 can be smaller than the subcarrier spacing of CC1. In this case, the minimum subcarrier spacing of CC0 and CC1 can be used to determine the timing offset between the transmission of the DCI and the two RS resource sets. This means that the subcarrier spacing of CC0 can be used to determine the duration of both k1 and k2.

[0057] B.UE capability reporting

[0058] For UEs supporting positioning measurements in frequency layer f in frequency band b, the UE may report some UE capabilities to the network (e.g., LMF or gNB). The UE capabilities for each frequency band may include one or more of the following parameters.

[0059] The maximum bandwidth B supported by the UE may be reported separately for the FR1 band and the FR2 band. For example, for FR1 band b, a maximum of 80 MHz may be supported and reported by the UE, while for FR2 band b, a maximum of 200 MHz may be supported and reported by the UE.

[0060] DL PRS buffering capability parameters (eg, type 1 or type 2) may also be reported. Type 1 may be a sub-slot or symbol level buffer. Type 2 may be a slot level buffer.

[0061] A combination of (N, T) values ​​may also be reported. For a given maximum bandwidth B (in MHz) supported by the UE, N may be the duration (in ms) of a DL PRS symbol processed per T ms. The duration N of a DL PRS symbol in ms that the UE may process per T ms adopts 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, 1280} 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.

[0062] The maximum number R of DL PRS resources that the UE can process in one time slot may also be reported. R may be different for different subcarrier spacings (SCSs) and may also be different for FR1 band or FR2 band.

[0063] The UE may report capability signaling as described above. On the other hand, the LMF may configure positioning RS (PRS). For the purpose of DL PRS processing capability, the duration K ms of the DL PRS symbol within the P ms window corresponding to the maximum PRS period in the positioning frequency layer is calculated by type 1 duration calculation with UE symbol level buffering capability:

[0064]

[0065] Type 2 duration calculation with UE slot level buffering capability:

[0066]

[0067] Where S is the set of time slots based on the parameter set of the DL PRS of the serving cell within the P millisecond window in the positioning frequency layer containing potential DL PRS resources. For Type 1, It may be the minimum spacing in ms within slot s corresponding to an integer number of OFDM symbols based on the parameter set of the DL PRS of the serving cell covering the union of potential PRS symbols and determining the PRS symbol occupancy within slot s. For Type 2, μ may be the parameter set of the DL PRS.

[0068] In addition, (K, P) may mean that the UE will process PRS of K ms duration within a window with P ms periodicity. K and P may depend on the PRS configuration. Assuming that P is the same as the UE capability T, if K <= UE capability N, the UE can process all K ms durations of PRS. However, if K>N, the UE may not be able to process K ms of PRS within the window P. For example, K=2N, since the configured PRS measurement exceeds the UE capability, the UE can process all K ms of PRS within the 2P window.

[0069] For a UE supporting positioning measurement in F (F>=1) aggregated frequency layers, the UE may simultaneously receive and measure F positioning RS resources in the F frequency layers. For simplicity and positioning measurement accuracy, the F frequency layers may be in one frequency band (eg, frequency band b).

[0070] I. UE Processing Complexity

[0071] One issue may be that when the UE processes PRS simultaneously in F aggregated frequency layers in frequency band f, the UE cost and UE complexity may be higher than processing in a single frequency layer. Therefore, the UE capabilities for single layer PRS processing and F aggregated frequency layer PRS processing may be different. Although the UE may be configured with multiple frequency layers, one frequency layer may be configured by the UE at a given time. Therefore, for both the network side and the UE side, the UE capabilities for both single layer PRS processing and F frequency layer processing may be cleared.

[0072] a. Reporting UE capabilities for single-layer PRS processing and aggregated frequency layers

[0073] Reference now Figure 5 , depicts a block diagram of a bandwidth 500 having frequency spacing between multiple frequency layers. In some embodiments, UE capabilities may be reported for both single layer PRS processing and aggregated frequency layer processing for a given frequency band. For single layer PRS processing, the UE capabilities may be as described above. For multiple aggregated frequency layer processing, the UE capabilities for each frequency band may include one or more of the following parameters that may be reported:

[0074] This parameter can identify the maximum bandwidth B supported by the UE for aggregation of more than one frequency layer. F This parameter is greater than B. This parameter can include the length of the interval between two frequency layers. Therefore, B F The maximum bandwidth supported by the UE may be indicated, including the bandwidth of the frequency layers and one or more gaps between the frequency layers. This may be because if the UE adds zeros between two non-contiguous frequency layers, the total bandwidth including the gaps also consumes UE complexity.

[0075] In addition, this parameter may not include the interval length between two frequency layers. F The maximum bandwidth that the UE can support may be indicated, which is the sum of the bandwidths of multiple frequency layers without considering the spacing between the frequency layers. In this case, when the UE performs an inverse fast Fourier transform (IFFT) operation for multiple frequency layer measurements, the UE may not add zeros.

[0076] The parameter may also identify the maximum number of frequency layers F. The UE may support aggregated measurements on a maximum of F frequency layers.

[0077] These parameters may also include (N F , T F ) values. For a given maximum bandwidth B supported by the UE F (in MHz), N can be per T FThe duration (in ms) of the DL PRS symbols processed by the MS. The UE can process the DL PRS symbol duration N in ms every T F ms F Adopt the maximum DL PRS bandwidth B in MHz supported and reported by the UE F . Since aggregating measurements across multiple frequency layers consumes more UE complexity and storage, the UE processing capacity may be worse than that for a single layer. Therefore, one or more of the following conditions should be satisfied: N F <= N or N F < N; and T F >= or T F > T.

[0078] This parameter can identify the maximum number R of DL PRS resources that the UE can process in a time slot F . Since the UE may simultaneously measure PRS resources in different frequency layers through one receiver chain, the PRS resources transmitted simultaneously in F aggregated frequency layers can be assumed to be one PRS resource. In addition, the maximum number R of DL PRS resources that the UE can process in multiple aggregated frequency layers F can count the PRS resources in one of the F aggregated frequency layers. Since aggregating measurements across multiple frequency layers consumes more UE complexity and memory, the UE processing capacity may be worse than that for a single layer. Therefore, R F <= R or R F < R. If R F counts the PRS resources in all aggregated frequency layers, there may be a situation where R F / F <= R or R F / F < R; or R F <= R * F or R F < R * F.

[0079] This parameter can identify the phase offset or timing offset between aggregated frequency layers. Since the phase offset or timing offset between aggregated frequency layers greatly affects the positioning measurement performance, one or more values of the phase offset or timing offset between aggregated frequency layers can be reported. One or more reported phase offset or timing offset values can include the maximum or minimum values that the UE can support. For smaller B F or F values, since the phase error or timing error can be easily controlled by the UE hardware, the phase offset (or phase error) or timing offset (or timing error) between frequency layers may be small. However, for larger B FOr F value, since the phase error or timing error UE is not easy to be controlled by UE hardware, the phase offset (or phase error) or timing offset (or timing error) between frequency layers may be large. Therefore, multiple phase offset or timing offset values ​​can be reported, each of which corresponds to an F value or B value. F value.

[0080] Since for different B F Value, processing capacity (N F ,T F ) may be different, so the UE can report one or more combinations (B F ,N F ,T F ).

[0081] b. Partial reporting of UE capabilities

[0082] In some embodiments, some of the parameters may be omitted from reporting. For example, for multiple aggregated frequency layer PRS measurements, only F or B may be reported via UE capability signaling. F (or combination). In this case, the UE capability to support multiple aggregated frequency layer PRS measurements without signaling information may be defined as one or more of the following.

[0083] N F Can be based on F, B F and B and N. 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, then N F =N / F. As another example, f(F)=scale*F, where scale is a fractional 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(B F ,B)=B / B F , then 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).

[0084] TF may be determined based on at least one of F, BF, and b and T. In some embodiments, TF = T*f(F). For example, f(F) = F, so TF = T*F. In some embodiments, TF = f(T, F). In some embodiments, TF = T*f(BF, B). For example, f(BF, B) = BF / B, so TF = T*BF / B. In some embodiments, TF = f(BF, B, T). In some embodiments, TF = T*f(F, BF, B). In some embodiments, TF = f(F, BF, B, T).

[0085] R F It can be determined based on at least one of F, BF, and b and R. 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, R F =f(F,B F ,B,R).

[0086] The main motivation for the above predefined relationship may be to save signaling overhead. Due to the higher UE complexity and cost for multiple aggregated frequency layer measurements, the processing power may be lower compared to single layer frequency measurements. Therefore, even based on the above predefined rules, the processing power N F It may also be <= N, or T F <=T, or R F <=R.

[0087] II. Processing Calculation

[0088] a. Predefined rules for UE processing capabilities

[0089] In some embodiments, some of the parameters may be omitted from the report, and the predefined rules for UE processing capabilities may also be omitted. FIt can be reported by UE capability signaling for multiple aggregated frequency layer PRS measurement for the frequency band. In this case, the duration K of the DL PRS symbol within the P ms window for multiple aggregated frequency layers F ms can be composed of F', B F ' and at least one of B and K. K may be the duration K ms of a DL PRS symbol within any Pms window 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, F'=1 is used for single frequency layer PRS processing, and F'=factor (factor>1) is used for multiple aggregated frequency layer PRS processing.

[0090] “B F " may be the configured bandwidth of multiple aggregated frequency layers, which may or may not include spacing between frequency layers. "B F " may be a function of the configured bandwidth of multiple aggregated frequency layers, which may or may not include spacing between frequency layers. B may be the maximum bandwidth reported by UE capability signaling for a single frequency layer as mentioned above. Thus, K F Can be F', B F , B and K. For example, K F =F'*K. For example, K F =K*f(B F’ ,B)(e.g. K F =K*B F’ / B).

[0091] III. Measurement cycle specifications

[0092] When multiple frequency layers are configured for some measurements (e.g., PRS measurements and RRM measurements) of PRS measurements in positioning frequency layer i, when the measurement interval and the 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:

[0093]

[0094] 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 period of PRS-RSTD measurements in positioning frequency layer i, as further defined in this clause.

[0095] T PRS-RSTD,i The measurement period of PRS RSTD measurement in the i positioning frequency layer may be as follows:

[0096]

[0097] Among them, N RXBeam,i is the UE Rx beam scanning factor, CSSF PRS,i is the carrier-specific scaling factor used to locate frequency layer i, N sample is the number of PRS RSTD samples. last is the measurement duration of the last PRS RSTD sample, which includes the sampling time and the processing time:

[0098] T last =T i +L PRS,i

[0099]

[0100] T available_PRS,i =LCM(T PRS,i MGRP i ),

[0101] T PRS,i and MGRP i The least common multiple between PRS,i is the duration, is the maximum number of DL PRS resources in positioning frequency layer i configured in one time slot, and N′ is the UE capability of the number of DL PRS resources that the UE can handle in one time slot. This can be R(the maximum number of DL PRS resources R that the UE can handle in one time slot).

[0102] For multiple aggregated frequency layer positioning measurements, the F aggregated frequency layers can be assumed to be a combined frequency layer. In this case, the above calculation of the total DL RSTD measurement period T RSTD,Total and the measurement period T for PRS RSTD measurement in the i positioning frequency layer PRS-RSTD,i The formula of may remain unchanged. Specifically, one of the F aggregated frequency layers may be used to calculate and / or T PRS-RSTD,i Therefore, all other frequency layers may not be used for T RSTD,Total and / or T PRS-RSTD,i Calculation.

[0103] C. Report the Transmitter Receiving Point (TRP) Identifier (ID)

[0104] In single frequency layer PRS measurement, the UE may report a TRP ID (dl-PRS-ID-r16), one or more PRS resource IDs or a PRS resource set ID to determine a reference or for positioning measurement.

[0105] The network may indicate to the UE that a set of downlink (DL) PRS resources may 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 by the network to the UE 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.

[0106] The UE may be expected to indicate this reference whenever it is expected to receive a DL PRS. This reference provided by nr-DL-PRS-ReferenceInfo-r16 may include 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 measurement as long as the condition that the used DL PRS resources belong to a single DL PRS resource set is met. If the UE chooses to use a reference different from that indicated by the network, the UE may be expected to report dl-PRS-ID-r16, one or more DL PRS resource IDs, or DL ​​PRS resource set IDs used to determine the reference.

[0107] The UE may be configured to report quality metrics corresponding to DL RSTD and UE Rx-Tx time difference measurements, which include the following fields: (a) timingQualityValue-r16, which provides a best estimate of the uncertainty of the measurement; (b) timingQualityResolution-r16, which specifies the resolution level used in the timingQualityValue-r16 field.

[0108] The UE may be expected to be configured with higher layer parameters nr-DL-PRS-expectedRSTD-r16, which defines the time difference relative to the timing of receive DL subframes at which the UE is expected to receive DL PRS, and DL-PRS-expectedRSTD-uncertainty-r16, which defines the search window around nr-DL-PRS-expectedRSTD-r16.

[0109] For DL ​​UE positioning measurement reporting in the high-level parameters NR-DL-TDOA-SignalMeasurementInformation or NR-Multi-RTT-SignalMeasurementInformation, the UE can be configured to report one or more DL PRS resource IDs or one or more DL PRS resource set IDs associated with one or more DL PRS resources or one or more DL PRS resource sets used to determine the UE measurement of DL RSTD, UE Tx-Rx time difference.

[0110] For DL ​​RSTD, DL PRS-RSRP and UE Rx-Tx time difference measurements, the UE may report the associated higher layer parameter nr-TimeStamp-r16. The nr-TimeStamp-r16 parameter may include the SFN and the timeslot number used for the subcarrier spacing. These values ​​may correspond to the reference provided by nr-DL-PRS-ReferenceInfo-r16.

[0111] In the case of multiple aggregated frequency layers positioning measurement and reporting, for reference determination or for positioning measurement or for timestamp (nr-TimeStamp-r16) reporting, the UE can only report the TRP ID (dl-PRS-ID-r16), one or more PRS resource IDs, PRS resource set IDs or timestamp from one frequency layer in the multiple configured aggregated frequency layers. That is, one frequency layer in the multiple configured aggregated frequency layers can be assumed to be the reference frequency layer for other frequency layers. The configuration or reporting parameters corresponding to the reference frequency layer can be used for all aggregated FLs.

[0112] In summary, for multiple aggregated frequency layer positioning measurement and reporting, one frequency layer can be configured or predefined or reported as a reference frequency layer for other frequency layers. There can be more than one reference FL, but it should be less than the number of configured aggregated FLs.

[0113] The network may indicate to the UE that only one or more DL PRS resources from the reference FL (frequency layer) may be used as a reference for DL ​​RSTD, DL PRS-RSRP (reference signal received power) and for UE Rx-Tx time difference measurement. The indicated one or more resources may be a reference for all aggregated FLs.

[0114] The UE may report only the dl-PRS-ID-r16, one or more DL PRS resource IDs or DL ​​PRS resource set IDs from the reference FL used to determine the reference. The determined reference may be used for all aggregated FLs. The UE may report only the timestamp from the reference FL. The timestamp may be used for all aggregated FLs.

[0115] I. Priority Rules

[0116] As discussed above, the UE capability signaling may include F or B corresponding 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 configure F' frequency layers or B for the aggregated frequency layer. F’ Bandwidth, where F'>F or B F’ >B F This may be because the PRS configuration may be broadcast information shared among many UEs.

[0117] In order to achieve effective positioning measurement, one approach may be to let the UE decide which subset of F' frequency layers or bandwidth B to measure. F’ In order to let the network know which subset of F' frequency layers or which subset of bandwidth BF' was measured. In some embodiments, the UE may report an identifier (ID) of the FL or a list of identifiers. In some embodiments, the UE may report multiple PRS resource set IDs in a FL different from the configured FL. Since the set ID is unique between different FLs, a subset of 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 from different aggregated frequency layers.

[0118] If multiple non-aggregated frequency layers are configured for the UE, the UE may select only one FL for measurement and report the measurement results. If the number of configured PRS resource sets or resources or TRPs (dl-PRS-ID) in the selected FL exceeds the UE capability, the UE may discard PRS resource sets or resources or TRPs with lower priority. For example, within a positioning frequency layer, the DL PRS resources may be sorted in descending order of priority of the measurements performed by the UE, where the reference indicated by nr-DL-PRS-ReferenceInfo is the highest priority for measurement.

[0119] The following priorities may be assumed. Up to 64 dl-PRS-IDs of a frequency layer may be sorted according to priority. Up to 2 DL PRS resource sets for each dl-PRS-ID of a frequency layer may be sorted according to priority. In actual positioning configuration, aggregated frequency layers or non-aggregated frequency layers may be configured to the UE. The definition of the discarding rules may not be clear.

[0120] One approach may be to assume the related aggregated frequency layers as one merged FL. The priority rules in the merged FL may be the same as for a single FL. The PRS resources or resource sets or TRPs in multiple layers that need to be aggregated may have the same priority. The merged FL may be predefined with the highest or lowest priority compared to single layer FL measurements.

[0121] If multiple merged FLs are configured, one approach may be to give a dedicated merged FL a higher priority. In some embodiments, a dedicated merged FL may have a greater number of FLs or a lesser number of FLs. In some embodiments, a dedicated merged FL may have a greater aggregate bandwidth or a lesser aggregate bandwidth. In some embodiments, a dedicated merged FL may have a smaller phase offset or timing offset between FLs.

[0122] D. The process of positioning using multiple frequency layers

[0123] Reference now Figure 6 , depicts a flow chart of a method 600 for positioning using multiple frequency layers. The method 600 may be implemented using or performed by any of the above components, such as BS 102, UE 104, BS 202, and UE 204. In brief, a first wireless communication device may configure aggregate positioning information (605). The first wireless communication device may provide a schedule (610). The second wireless communication device may receive the schedule (615). The second wireless communication device may perform aggregate positioning measurements (620). The second wireless communication device may send a report (625). The first wireless communication device may receive the report (630).

[0124] In more detail, the first wireless communication device (e.g., BS102, BS202, and LMF) may generate, set, or otherwise configure first aggregate positioning information (605). The first aggregate positioning information may be used for first aggregate positioning measurements in a first group of frequency layers. The first aggregate positioning information may define, specify, or identify a positioning reference signal (PRS) configuration to configure F' frequency layers or BF' bandwidth of the aggregate frequency layer. The first aggregate positioning information may be associated with at least one frequency layer in the first group of frequency layers. In some embodiments, at least one of the first group of frequency layers may correspond to or may be a reference frequency layer for other (remaining) frequency layers in the first group. The reference frequency layer may be used for calculation of the first aggregate positioning measurement. In some embodiments, only the positioning information of the reference frequency layer may be used as the first aggregate positioning information.

[0125] The first wireless communication device may send, transmit, or otherwise provide signaling (610) for scheduling to a second communication device (e.g., UE 104 and UE 204). In some embodiments, the signaling may identify or include scheduling for a first positioning reference signal (RS) resource having a first resource identifier (ID) or a first resource set having a first resource set ID=I in a first frequency layer. In some embodiments, the signaling may identify or include scheduling for a second positioning RS resource having a first resource ID or a resource set having a first resource set ID in a second frequency layer. The first frequency layer and the second frequency layer may be from a first group of frequency layers. In some embodiments, the bandwidth part (BWP) ID of the first RS resource or the first resource set may be the same as the bandwidth part (BWP) ID of the second RS resource or the second resource set. In some embodiments, the bandwidth part (BWP) ID of the first RS resource or the first resource set may be different from the second RS resource set or the second resource set.

[0126] The second wireless communication device may receive signaling (615) from the first wireless communication device. The signaling may be used to schedule the second wireless communication device to perform aggregate positioning measurements. After receiving, the second wireless communication device may parse the signaling to identify the schedule. Through the identification, the second wireless communication device may use PRS resources according to the schedule. The schedule may specify the 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 schedule. The schedule may specify the use of a second positioning RS resource with a first resource ID or a resource set with a first resource set ID in a specified second frequency layer. In response, the second wireless communication device may activate the specified second positioning RS resource.

[0127] The second wireless communication device may determine, implement or otherwise perform aggregate positioning measurements (620). Based on the configuration and scheduling, the second wireless communication device may perform second aggregate positioning measurements in a second set of frequency layers. The second aggregate positioning information may be capability signaling of the second wireless communication device. The second aggregate positioning information may define, specify or identify F' frequency layers corresponding to the maximum number of aggregated frequency layers or BF' corresponding to the maximum bandwidth of the aggregated frequency layers supported by the second wireless communication device. In some embodiments, when performing aggregate positioning measurements, the second wireless communication device may identify or determine UE capabilities on a per-frequency layer basis. In some embodiments, UE capabilities may identify or include a maximum bandwidth (B), a DL PRS buffering capability, a combination of (N, T) values, a maximum number of DL PRS resources supported by the second wireless communication device, and the like. In some embodiments, UE capabilities may identify or include a maximum bandwidth supported for one frequency layer aggregation, a maximum number of frequency layers, a combination of (NF, TF) values, a maximum number of DL PRS resources in a time slot, and a phase offset or timing offset between aggregated frequency layers, and the like. In some embodiments, UE capabilities may identify or include N F , T F and R F Values, etc. In some embodiments, when performing measurements, the second wireless communication device may retrieve, determine, or otherwise obtain a transmit receive identifier (TRP ID), a PRS resource ID or a PRS resource set ID, and other related information.

[0128] The second wireless communication device may provide, send, or otherwise transmit a report to the first wireless communication device (625). Using the second aggregated positioning information identified from the measurement, the first wireless communication device may determine or generate a report. The report may include second aggregated positioning information for second aggregated positioning measurements in the second set of frequency layers. In some embodiments, when generating the report, the second wireless communication device may perform aggregated positioning of the measurements in the second set of frequency layers. In some embodiments, the second wireless communication device may send, provide, or otherwise transmit to the first wireless communication device an indication that the frequency layer or resource will be used for measurement to obtain an aggregated positioning measurement report. The indication may identify or include a subset of the first set of frequency layers or a subset of a set of positioning resource set identifiers (PRS-IDs). In some embodiments, the second wireless communication device may generate an indication using the second aggregated positioning information. Through this generation, the second wireless communication device may transmit the indication as part of the aggregated positioning measurement report.

[0129] A reference frequency layer from the first set of frequency layers or the second set of frequency layers may be used to derive positioning information (by the first wireless communication device or the second wireless communication device). 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 measuring 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) for determining a reference for measurement, one or more DL PRS resource IDs, or a DL PRS resource set ID. In some embodiments, the positioning information may identify or include a timestamp parameter including a single frequency network (SFN) and a time slot number (SCS) for subcarrier spacing. In some embodiments, the reference frequency layer may be used to calculate 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 a measurement period (T ) for DL ​​positioning reference signal (PRS) reference signal received power. PRS-RSTD,i ). In the calculation, other frequency layers in the first plurality of frequency layers or the second plurality of frequency layers may not be used.

[0130] In some embodiments, the second aggregate positioning information reported may identify or include a user equipment (UE) capability report. In some embodiments, the UE capability report may identify or include an aggregated maximum bandwidth (B F ). In some embodiments, B F The UE capability report may correspond to or include one or more frequency intervals 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 in the aggregation (F). In some embodiments, the UE capability report may identify or include a duration (T) in milliseconds (ms) for each measurement of the aggregation. F ) is processed once, in ms, for the first duration (N) of a downlink (DL) positioning reference signal (PRS) symbol F ). In some embodiments, N F ≤N or T F ≥ T, and N may be the first duration (in ms) of a DL PRS symbol processed every other duration (T) in milliseconds (ms) for measurements of a single frequency layer. In some embodiments, the UE capability report may identify or include a maximum or minimum value of a phase offset or timing offset between frequency layers in the aggregation.

[0131] In some embodiments, the second aggregate positioning information may identify or include aggregated user equipment (UE) capabilities of the second set of frequency layers. The UE capabilities may be based on a UE capability report for a single frequency layer in the second set of frequency layers. For example, a reference frequency layer may be used to determine or generate a UE capability report. In some embodiments, in the UE capability report, N F According to F, B F or B and N. In some embodiments, T F According to F, B F or B and T. In some embodiments, R F According to F, B F or B and R. In some embodiments, N F It can be the duration in ms of the measurement used for aggregation (T F In some embodiments, F may be the maximum number of frequency layers in the aggregation. In some embodiments, N may be the first duration of a DL PRS symbol in ms that is processed every other duration (T) in ms for measurement of one frequency layer. In some embodiments, B may be the maximum bandwidth of one frequency layer. In some embodiments, B F The maximum bandwidth (B) of the aggregation of the second plurality of frequency layers may be F ).

[0132] In some embodiments, the DL PRS may be used as a reference for determining or performing aggregate positioning measurements. In some embodiments, the duration K of a downlink (DL) positioning reference signal (PRS) symbol in milliseconds (ms) within a time window (P) in milliseconds (ms) for an aggregation of frequency layers from the first plurality of frequency layers or the second plurality of frequency layers is F , can be obtained by F', B F ' or at least one of B and K. In some embodiments, K F =F'*K. In some embodiments, K F It can be K times B F 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 an aggregation. In some embodiments, F' may be a function of the configured number of frequency layers in an aggregation. In some embodiments, B F' may be a function of the aggregated configured bandwidth or the configured bandwidth. In some embodiments, B may be the maximum bandwidth of a frequency layer.

[0133] The first wireless communication device may receive a report from the second wireless communication device (630). After receiving, the first wireless communication device may parse the report to identify the second aggregate positioning information. According to the report, the second aggregate positioning information may be associated with at least one frequency layer in the second set of frequency layers. The second aggregate positioning information may be associated with at least one frequency layer in the second set of frequency layers. In some embodiments, at least one of the second set of frequency layers may correspond to or may be a reference frequency layer for other (remaining) frequency layers in the second group. The reference frequency layer may be used for calculation of aggregate positioning measurements. In some embodiments, only the positioning information of the reference frequency layer may be used as the second aggregate positioning information. In some embodiments, the first wireless communication device may retrieve, identify or otherwise receive from the second wireless communication device an indication that the frequency layer or resource will be used for measurement to obtain an aggregate positioning measurement report. The indication may identify or include a subset of the first set of frequency layers or a subset of a 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.

[0134] Although various embodiments of the present solution have been described above, it should be understood that they are presented only as examples rather than as limitations. Similarly, various figures can depict example architectures or configurations, which are provided to enable those of ordinary skill in the art to understand the example features and functions of the present solution. However, these people should understand that the present solution is not limited to the example architectures or configurations shown, but can be implemented using various alternative architectures and configurations. In addition, as those of ordinary skill in the art understand, one or more features of an embodiment can be combined with one or more features of another embodiment described herein. Therefore, the breadth and scope of the present disclosure should not be limited by any one of the above-mentioned illustrative embodiments.

[0135] It should also be understood that any reference to an element using designations such as "first," "second," etc. herein 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, a reference to a first element and a second element does not mean that only two elements can be used, or that the first element must precede the second element in some manner.

[0136] In addition, it should be understood by those skilled in the art that information and signals may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, and symbols (e.g., which may be referenced in the above description) may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0137] It will also be understood by those of ordinary skill in the art that any of the various illustrative logical blocks, modules, processors, devices, circuits, methods, and functions described in conjunction with the various aspects disclosed herein may be implemented by electronic hardware (e.g., digital implementation, analog implementation, or a combination of both), firmware, various forms of programs or design codes in conjunction with instructions (which may be referred to herein as "software" or "software modules" for convenience), or any combination of these technologies. In order to clearly illustrate this interchangeability of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps have been described above in their entirety in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software, or a combination of these technologies, depends on the specific application and the design constraints imposed on the entire system. A skilled technician may implement the described functionality in various ways for each specific application, but such implementation decisions will not result in a departure from the scope of this disclosure.

[0138] In addition, it will be appreciated by those of ordinary skill in the art that the various illustrative logic blocks, modules, devices, components, and circuits described herein may be implemented within or performed by an integrated circuit (IC), which may include a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic device, 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 within a device. A general-purpose processor may be a microprocessor, but in an alternative, the processor may be any conventional processor, controller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a combination of multiple microprocessors, one or more microprocessors combined with a DSP core, or any other suitable configuration for performing the functions described herein.

[0139] If implemented in software, the function can be stored as one or more instructions or codes on a computer-readable medium. Therefore, the steps of the method or algorithm disclosed herein can be implemented as software stored on a computer-readable medium. Computer-readable media include both computer storage media and communication media, and the communication media include any media that can enable a computer program or code to be transferred from one place to another. The storage medium can be any available medium that a computer can access. As an example and not limitation, such a computer-readable medium may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage devices, magnetic disk storage devices or other magnetic storage devices, or any other medium that can be used to store the expected program code in the form of instructions or data structures and can be accessed by a computer.

[0140] In this document, the term "module" as used herein refers to software, firmware, hardware, and any combination of these elements for performing the associated functions described herein. In addition, for the purpose of discussion, various modules are described as separate modules; however, as is apparent to one of ordinary skill in the art, according to embodiments of the present solution, two or more modules may be combined to form a single module that performs the associated functions.

[0141] In addition, in the embodiment of the present solution, a memory or other storage device and a communication component can be used. It should be understood that, for the sake of clarity, the above description has described the embodiment of the present solution with reference to different functional units and processors. However, it is obvious that any suitable functional distribution between different functional units, processing logic elements or domains can be used without departing from the present solution. For example, the function shown as being performed by a separate processing logic element or controller can be performed by the same processing logic element or controller. Therefore, reference to a specific functional unit is merely a reference to a suitable means for providing the described functionality, rather than indicating a strict logical or physical structure or organization.

[0142] Various modifications to the embodiments described in this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of this disclosure. Therefore, this 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 set forth in the above claims.

Claims

1. A wireless communication method, comprising: The first communication device configures first aggregated positioning information for the second communication device, where the first aggregated positioning information is used for aggregated positioning measurement in the first plurality of frequency layers; Sending, by the first communications device, signaling to the second communications device to schedule aggregated positioning measurements; and receiving, by the first communications device from the second communications device, a report comprising second aggregate positioning information for aggregate positioning measurements in a second plurality of frequency layers, 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, The second aggregated positioning information includes a user equipment UE capability report, and the user equipment capability report includes at least one of the following: The aggregated maximum bandwidth B of the second plurality of frequency layers F ; a maximum number F of frequency layers in the aggregation; The duration T in milliseconds ms of each interval used for the aggregated measurement F The first duration N of a downlink DL positioning reference signal PRS symbol processed once in milliseconds ms F ;or The maximum or minimum value of the phase offset or timing offset between the frequency layers in the aggregation.

2. The method according to claim 1, wherein: One of the first plurality of frequency layers or the second plurality of frequency layers is a reference frequency layer for other frequency layers of the first plurality of frequency layers or the second plurality of frequency layers, and Only the positioning information of the reference frequency layer is used as the first aggregated positioning information or the second aggregated positioning information.

3. The method according to claim 2, wherein the positioning information of the reference frequency layer comprises at least one of the following: A set of downlink DL positioning reference signal PRS resources, which will be used as a reference 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 transmit-receive point (TRP) identifier ID, one or more DL PRS resource IDs or a DL PRS resource set ID used to determine a reference for the measurement; or A timestamp parameter includes a single frequency network (SFN) and a timeslot number (SCS) for subcarrier spacing.

4. The method according to claim 1, comprising: An indication is received by the first communication device from the second communication device, the indication indicating that a subset of the first plurality of frequency layers or a subset of the first plurality of positioning resource set identifiers (IDs) configured by the first communication device is to be measured to obtain an aggregated positioning measurement report.

5. The method according to claim 1, wherein said B F One or more frequency intervals between pairs of frequency layers in the second plurality of frequency layers are included.

6. The method according to claim 1, wherein: N F ≤N or T F ≥T, and N is the first duration in ms of a DL PRS symbol processed every other duration T in milliseconds ms for measurement of a single frequency layer. 7 . The method of claim 1 , wherein the second aggregate positioning information comprises aggregated user equipment (UE) capabilities for the second plurality of frequency layers and is based on a UE capability report of a single frequency layer of the second plurality of frequency layers.

8. The method of claim 7, wherein at least one of the following: N F According to F, B F and at least one of B and N to determine; T F According to F, B F and at least one of B and T; or R F According to F, B F and at least one of B and R; and in: N F is the duration T in milliseconds ms of the measurement interval used for the aggregation F the first duration of a downlink DL positioning reference signal PRS symbol in ms that is processed once, F is the maximum number of frequency layers in the aggregation, N is the first duration in ms of a DL PRS symbol processed every other duration T in ms for measurement of one frequency layer, and B is the maximum bandwidth of the one frequency layer, B F is the maximum bandwidth B of the aggregation of the second plurality of frequency layers F .

9. The method according to claim 1, wherein: Duration K of a downlink DL positioning reference signal PRS symbol in ms within a time window (P) in milliseconds ms for an aggregation of frequency layers from the first or second plurality of frequency layers F , by F', B F ' or at least one of B and K to determine; and in: K is the duration of a DL PRS symbol in ms within a 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 layers in the aggregation, or a function of the configured number of frequency layers, B F ' is a function of the aggregated configured bandwidth, the configured bandwidth, and B is the maximum bandwidth of the one frequency layer.

10. The method according to claim 9, wherein: K F =F'*K。 11. The method according to claim 9, wherein: K F It is K times B F ' and B's function.

12. The method according to claim 2, wherein the reference frequency layer is used to calculate at least one of the following: a total downlink DL reference signal time difference (RSTD) measurement period (T RSTD，Total ) or the measurement period (T PRS-RSTD,i ), and other frequency layers in the first or second plurality of frequency layers are not used.

13. The method according to claim 1, comprising: The signaling sent by the first communication device to the second communication device at least schedules: a first positioning reference signal RS resource having a first resource identifier ID or a first resource set having a first resource set ID=I in a first frequency layer, and A second positioning RS resource having the first resource ID or a resource set having the first resource set ID in a second frequency layer, wherein the first frequency layer and the second frequency layer are from a first plurality of frequency layers.

14. The method according to claim 13, wherein: A bandwidth part (BWP) ID for the first positioning RS resource or the first resource set is the same as a bandwidth part (BWP) ID for the second positioning RS resource or the second resource set.

15. A wireless communication method, comprising: Receiving, by the second communication device, signaling for scheduling aggregated positioning measurements from the first communication device; sending, by the second communication device to the first communication device, a report including second aggregated positioning information for aggregated positioning measurements in a second plurality of frequency layers, wherein the first communication device is configured with first aggregated positioning information, the first aggregated positioning information being used for aggregated positioning measurements in a first plurality of frequency layers, and 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, The second aggregated positioning information includes a user equipment UE capability report, and the user equipment capability report includes at least one of the following: The aggregated maximum bandwidth B of the second plurality of frequency layers F ; a maximum number F of frequency layers in the aggregation; The duration T in milliseconds ms of each interval used for the aggregated measurement F The first duration N of a downlink DL positioning reference signal PRS symbol processed once in milliseconds ms F ;or The maximum or minimum value of the phase offset or timing offset between the frequency layers in the aggregation.

16. A non-transitory computer-readable medium storing instructions which, when executed by at least one processor, cause the at least one processor to perform the method according to any one of claims 1 to 15.

17. A wireless communication device, comprising: At least one processor configured to perform the method according to any one of claims 1 to 15.

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