SYSTEM AND METHOD FOR ENHANCED POSITIONING OF WIRELESS DEVICES - Patent application

Abstract

The present arrangement relates to a system, method, and non-transitory computer-readable medium for receiving a configuration for a downlink reference signal for bandwidth aggregation, receiving a downlink reference signal, and determining positioning measurements for the downlink reference signal for bandwidth aggregation. In one embodiment, a wireless communication method includes receiving, by a wireless communication device, a configuration for a downlink reference signal for bandwidth aggregation from a first node of a network, receiving, by the wireless communication device, a downlink reference signal from a second node of the network in accordance with the configuration, and determining, by the wireless communication device, positioning measurements for the downlink reference signal for bandwidth aggregation.

Description

[Technical Field]

[0001] The present disclosure relates generally to wireless communications, and more particularly to carrier aggregation (CA) or bandwidth (BW) aggregation. [Background technology]

[0002] In the fifth generation mobile network system (5GC), CA is a key technology in the New Radio (NR) system. CA features can include aggregation of two or more component carriers. Summary of the Invention [Means for solving the problem]

[0003] The exemplary arrangements 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 taken in conjunction with the accompanying drawings. In accordance with various arrangements, exemplary systems, methods, devices, and computer program products are disclosed herein. However, it will be understood that these arrangements are presented by way of example, and not limitation, and that various modifications to the disclosed arrangements may be made while remaining within the scope of the present disclosure, as will be apparent to those skilled in the art upon reading this disclosure.

[0004] In some arrangements, a configuration for a downlink reference signal for bandwidth aggregation and a downlink reference signal according to the configuration are received, and the wireless communications device may determine positioning measurements for the downlink reference signal for bandwidth aggregation based on the downlink reference signal.

[0005] In some arrangements, a configuration for a downlink reference signal for bandwidth aggregation, and the downlink reference signal according to the configuration, may be transmitted. The network may receive positioning measurements for the downlink reference signal for bandwidth aggregation from the wireless communication device.

[0006] These and other aspects and their implementations are described in more detail in the drawings, specification, and claims. [Brief explanation of the drawings]

[0007] Various exemplary arrangements 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 arrangements 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, the drawings are not necessarily drawn to scale.

[0008] [Figure 1] FIG. 1 illustrates an exemplary cellular communication system according to several configurations.

[0009] [Figure 2] FIG. 2 shows a block diagram of an example base station and an example user equipment device according to some arrangements.

[0010] [Figure 3] FIG. 3 illustrates exemplary component carrier aggregation with various deployments.

[0011] [Figure 4] FIG. 4 illustrates exemplary wireless communications in various configurations.

[0012] [Figure 5] FIG. 5 illustrates exemplary resource mappings according to various arrangements.

[0013] [Figure 6] FIG. 6 shows exemplary muting patterns with various arrangements.

[0014] [Figure 7] FIG. 7 is a diagram illustrating exemplary resource configurations for positioning reference signals (PRS) according to various constellations.

[0015] [Figure 8] FIG. 8 shows exemplary muting patterns with various arrangements.

[0016] [Figure 9] FIG. 9 illustrates exemplary bandwidth aggregation in various arrangements.

[0017] [Figure 10] FIG. 10 illustrates exemplary wireless communications in various configurations.

[0018] [Figure 11] FIG. 11 illustrates exemplary wireless communications according to some arrangements.

[0019] [Figure 12] FIG. 12 illustrates exemplary aggregations with various arrangements.

[0020] [Figure 13] FIG. 13 illustrates an exemplary medium access control element (MAC-CE) in various arrangements.

[0021] [Figure 14] FIG. 14 illustrates exemplary MAC-CEs with various configurations.

[0022] [Figure 15]15A and 15B are diagrams illustrating exemplary wireless communications in various configurations.

[0023] [Figure 16] FIG. 16 is a flow chart diagram illustrating an exemplary method for enhanced positioning of wireless devices with various deployments.

[0024] [Figure 17] FIG. 17 is a flow chart diagram illustrating an exemplary method for enhanced positioning of wireless devices with various deployments.

[0025] [Figure 18] FIG. 18 illustrates an example mapping for enhanced positioning of wireless devices with various configurations.

[0026] [Figure 19] FIG. 19 illustrates an example mapping for enhanced positioning of wireless devices with various configurations.

[0027] [Figure 20] FIG. 20 illustrates an exemplary mapping for enhanced positioning of wireless devices with various configurations. DETAILED DESCRIPTION OF THE INVENTION

[0028] To enable those skilled in the art to make and use the present solution, various exemplary arrangements of the present solution are described below with reference to the accompanying figures. As will be apparent to those skilled in the art, after reading this disclosure, various changes or modifications can be made to the examples described herein without departing from the scope of the present solution. Thus, the present solution is not limited to the exemplary arrangements and applications described and illustrated herein. Furthermore, 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 operations in a sample order, and that the present solution is not limited to the specific order or hierarchy presented, unless otherwise specified.

[0029] In a wireless communication system, a wireless device may communicate with a network. As part of the communication process, the wireless device may perform various positioning procedures (e.g., to determine the location of the wireless device, its location relative to the network, the location of the network, etc.). In some cases, the wireless device may perform positioning procedures with the network over the UU interface by transmitting a sounding reference signal (SRS) and / or receiving a positioning reference signal (PRS). In some cases, using a wider bandwidth (e.g., more bandwidth, more frequency resources) may result in higher accuracy of positioning (e.g., the wider the bandwidth, the higher the positioning accuracy), especially for timing-based positioning methods (e.g., time difference of arrival (TDOA), round trip time (RTT)). In carrier aggregation (CA), two or more component carriers (CCs) are aggregated. A wireless device may simultaneously receive or transmit on one or more CCs, depending on the capabilities of the wireless device. The arrangements described herein provide enhancements (e.g., additions, updates, modifications) to reference signal bandwidth via carrier aggregation techniques. To do so, the wireless communication system may use signaling transfer methods and procedures to specify positioning in CA scenarios, taking into account multiple states of the wireless device (e.g., RRC_INACTIVE state and RRC_CONNECTED state).

[0030] 1 illustrates an example wireless communication system 100 in which the techniques disclosed herein according to implementations of the present disclosure may be implemented. In the following description, the wireless communication system 100 may implement any wireless network, such as a cellular network or a narrowband Internet of Things (NB-IoT) network, and is referred to herein as system 100. Such example system 100 includes a BS 102 and a UE 104 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 that overlap with a geographic region 101. In FIG. 1, the BS 102 and the UE 104 are contained within respective geographic boundaries of cell 126. Each of the other cells 130, 132, 134, 136, 138, and 140 may include at least one BS operating in its assigned bandwidth to provide adequate wireless communication coverage to its intended user.

[0031] For example, the BS 102 may operate in an allocated channel transmission bandwidth to provide adequate communication coverage to the UE 104. The BS 102 and the UE 104 may communicate via a downlink radio frame 118 and an uplink radio frame 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 implementations of the present solution.

[0032] In some implementations, the wireless communication system 100 may support CA. For example, CA is an important technology for expanding bandwidth in wireless communications. For high-precision positioning, a larger bandwidth provides higher positioning accuracy, especially when a timing-based positioning method (e.g., TDOA, RTT) is used. The techniques described herein may provide enhancements to various aspects of reference signal positioning procedures. For example, a wireless communication device may receive, by the wireless communication device, a configuration for a downlink reference signal for bandwidth aggregation from a first node of a network. The wireless communication device may receive, by the wireless communication device, a downlink reference signal according to the configuration from a second node of the network (e.g., a base station, a gNB, a NG Radio Access Network (NG-RAN)). The wireless communication device may determine positioning measurements for the downlink reference signal for bandwidth aggregation. In some examples, the downlink reference signal may include a downlink PRS (DL-PRS). In some cases, the network may include a Location Management Function (LMF) (e.g., a first node) and a base station (e.g., a second node).

[0033] 2 shows a block diagram of an exemplary wireless communication system 200 for transmitting and receiving wireless communication signals, e.g., Orthogonal Frequency Division Multiplexing (OFDM) / Orthogonal Frequency Division Multiple Access (OFDMA) signals, in accordance with some implementations 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 exemplary implementation, system 200 may be used to communicate (e.g., transmit and receive) data symbols in a wireless communication environment, such as wireless communication environment 100 of FIG. 1, as described above.

[0034] The system 200 generally includes a BS 202 and a UE 204. The BS 202 includes a base station (BS) 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 via a data communication bus 220. The UE 204 includes a UE 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 via a data communication bus 240. The BS 202 communicates with the UE 204 over a communication channel 250, which may be any wireless channel or other medium suitable for the transmission of data as described herein.

[0035] 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 exemplary blocks, modules, circuits, and processing logic described in connection with the implementations disclosed herein may be implemented in hardware, computer-readable software, firmware, or any practical combination thereof. To clearly illustrate this compatibility and suitability of hardware, firmware, and software, various exemplary 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 manner suitable for each particular application, but such implementation decisions should not be interpreted as limiting the scope of the present disclosure.

[0036] According to some implementations, 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 duplexing switch (not shown) may alternatively couple the uplink transmitter or receiver to the uplink antenna in a time-duplexed manner. Similarly, according to some implementations, 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. A downlink duplexing 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 receiving transmissions over the wireless transmission link 250. In some implementations, there is truncated time synchronization with a minimum guard time between changes in duplexing direction.

[0037] The UE transceiver 230 and the BS transceiver 210 are configured to communicate over a wireless data communication link 250 and cooperate with appropriately configured RF antenna arrangements 212 / 232 that may support particular wireless communication protocols and modulation schemes. In some exemplary implementations, the UE transceiver 210 and the BS transceiver 210 are configured to support industry standards such as Long Term Evolution (LTE) and emerging 5G and 6G standards. However, it will be understood that the present disclosure is not necessarily limited in its application to particular standards and associated protocols. Rather, the UE transceiver 230 and the BS transceiver 210 may be configured to support alternative or additional wireless data communication protocols, including future standards or variations thereof.

[0038] According to various implementations, 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 implementations, the UE 204 may be 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 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, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. In this aspect, the processor may be realized 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, multiple microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other such configuration.

[0039] Furthermore, the methods described in connection with the implementations disclosed herein may be implemented directly in hardware, firmware, software modules executed by processor modules 214 and 236, or any practical combination thereof. Memory modules 216 and 234 may be realized 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 can read information from and write information to memory modules 216 and 234, respectively. Memory modules 216 and 234 may be incorporated into their respective processor modules 210 and 230. In some implementations, memory modules 216 and 234 may each include a cache memory for storing temporary variables or other intermediate information during execution of instructions to be executed by processor modules 210 and 230. Memory modules 216 and 234 may also include non-volatile memory for storing instructions to be executed by processor modules 210 and 230, respectively.

[0040] The network communications module 218 generally represents the hardware, software, firmware, processing logic, and / or other components of the BS 202 that enable bidirectional communications between the BS transceiver 210 and other network components and communications nodes configured to communicate with the BS 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 BS transceiver 210 may communicate with conventional Ethernet-based computer networks. In this embodiment, the network communications module 218 may include a physical interface for connecting to a computer network (e.g., a mobile switching center (MSC)). As used herein with respect to a specified operation or function, the terms “configured for,” “configured to,” and conjugations thereof refer to a device, component, circuit, structure, machine, signal, etc. that is physically configured, programmed, formatted, and / or arranged to perform the specified operation or function.

[0041] 3 illustrates an example aggregation 300 according to various arrangements. The aggregation 300 may be an intra-band contiguous carrier aggregation. For example, a component carrier (CC) 302 may be aggregated with a CC 304 (e.g., CC carrier aggregation 308), and an aggregation of CCs 302 and 306 may be an example of an intra-band discontinuous carrier aggregation. In some cases, the frequency resource 310 may be an active bandwidth portion (BWP).

[0042] In some examples, from a downlink perspective, according to the capabilities of the user equipment (UE), a UE in RRC_INACTIVE state is expected to process downlink PRS outside or inside the initial downlink BWP 310. In some examples, from an uplink perspective, according to the capabilities of the UE, a UE in RRC_INACTIVE state may be configured with SRS resources for positioning associated with the initial uplink BWP 310, where the SRS resources are transmitted inside the initial uplink BWP with the same cyclic prefix (CP) and subcarrier spacing (SCS) as those configured for the initial uplink BWP. According to the capabilities of the UE, the UE may be configured with SRS resources for positioning outside the initial BWP 310, including the frequency location and bandwidth, subcarrier spacing, and CP length for transmission of the SRS in RRC_INACTIVE mode. The SRS resources for positioning outside the initial BWP 310 in RRC_INACTIVE mode may be configured in the same band and CC as the initial uplink BWP 310 (e.g., pre-configured, configured via a configuration message transmitted by the network, etc.). In some wireless communication systems, positioning signaling and procedures may be specified in a single carrier (e.g., 100 MHz in frequency range (FR) and 400 MHz in FR2), but bandwidth aggregation techniques can further improve positioning accuracy (e.g., meet the demand for higher accuracy in wireless communications).

[0043] 4 illustrates an example wireless communication 400 according to various arrangements. The wireless communication 400 may include a network 402 (e.g., a base station, a gNB, an NG-RAN, an Access and Mobility Management Function (AMF), an LMF, etc.) and a UE 404. In some cases, the network 402 may include multiple network entities (e.g., nodes). For example, the wireless communication 400 may support LTE Positioning Protocol (LPP) signaling, NR Positioning Protocol A (NRPPa) signaling, or both. In some examples, the network 402 may include a first node of the network 402 (e.g., an LMF) and a second node of the network 402 (e.g., a base station, a gNB, an NG-RAN, etc.).

[0044] For example, the wireless communication 400 may include the network 402 transmitting a downlink PRS (DL-PRS) 406 to the UE 404 and the UE 404 transmitting an SRS positioning (SRS-pos) 408 to the network 402. For example, in response to the UE 404 receiving the DL-PRS 406, the UE 404 may measure and process resources of the DL-PRS 406. The corresponding signaling may include a PRS configuration for positioning in a CA scenario, a measurement report, a measurement period requirement, or any combination thereof. According to the UE's capabilities, the UE 404 may transmit the SRS 408 in accordance with an SP SRS medium access control-control element (MAC-CE) design (e.g., for sidelink physical layer filtering) for positioning configuration.

[0045] In some examples, increasing the positioning reference signal (e.g., PRS, SRS-pos) bandwidth via carrier aggregation techniques may result in higher positioning accuracy. For positioning in an RRC_INACTIVE state, the positioning assistance data or PRS configuration 405 may be delivered to the UE 404 via various methods, as described herein. In a first example, the method may include positioning system information (e.g., a System Information Block for Positioning (posSIB)). In a second example, the method may include pre-configuring the assistance data when the UE 404 is in an RRC_CONNECTED state. In a third example, the method may include the network 402 transmitting to the UE 404 in the RRC_INACTIVE state during an ongoing small data transmission (SDT) procedure. Additionally or alternatively, the SRS for positioning in the RRC_INACTIVE state can be configured via either an RRCRelease with SuspendConfig or an SDT downlink (DL) radio resource control (RRC) message (e.g., MsgB / Msg4 of Random Access (RA)-SDT). In some cases, the CC can also be the serving cell or positioning frequency layer (PFL) to be aggregated in a CA scenario.

[0046] PRS assistance data and / or configurations (e.g., higher layer links for PFL) may be described. For example, the UE 404 may be configured with one or more DL-PRS PFL configurations as indicated by the LMF (of the network 402) via DL-PRS assistance data. Alternatively, the UE 404 may receive positioning system information (e.g., posSIB) including positioning assistance data broadcast from the network 402 (e.g., a gNB via RRC signaling). A DL PRS PFL may be defined by the LMF as a collection of DL PRS resource sets that share several common parameters (SCS, resource bandwidth, starting physical resource block (startPRB), point A, comb size, and cyclic prefix). To achieve high-accuracy positioning (e.g., for the TDOA and RTT methods), aggregation of PRS resources across PFLs for positioning measurements may be supported. Various example methods for enabling PRS bandwidth aggregation are provided.

[0047] In a first exemplary method, the UE 404 can receive a configuration from the network 402, where the configuration includes higher layer signaling and an indicator. The higher layer signaling may indicate that multiple PFLs are linked. The indicator may indicate whether each of the multiple PFLs for downlink reference signals is used for bandwidth aggregation, where each of the multiple PFLs includes at least one set of resources for the downlink reference signals. For example, the multiple PFLs used for bandwidth aggregation may be associated and / or linked via higher layer signaling (e.g., LPP signaling). The network 402 (e.g., an LMF) may explicitly notify the UE 404 which two or three PFLs are linked for aggregation. An indicator (e.g., Bandwidth-aggregation-ind) may be introduced for each PFL to indicate whether the particular PFL is used for bandwidth aggregation (e.g., a Boolean value). For example, referring to Figure 5, a UE 404 may be configured with three DL-PRS PFLs 406 (e.g., PFL1 502, PFL2 504, and PFL3 506). The network 402 (e.g., LMF) may indicate via LPP signaling that PFL1 502 and PFL3 506 are associated and used for bandwidth aggregation, and that PFL2 504 is not used for bandwidth aggregation. Figure 5 illustrates an example resource mapping 500 with various arrangements. The mapping 500 may outline a PFL resource mapping order in time and frequency (e.g., DL-PRS resources in multiple PFLs transmitting simultaneously).

[0048] In a second exemplary method, the configuration includes higher layer signaling and an indicator. The higher layer signaling may indicate that multiple PFLs used for bandwidth aggregation are linked. The indicator may indicate a reference PFL for each of multiple PFLs for downlink reference signals, each of the multiple PFLs including at least one set of resources for the downlink reference signal. For example, multiple PFLs used for bandwidth aggregation are associated and / or linked via higher layer signaling (e.g., LPP signaling). An indicator (e.g., Reference-PFL-ID) may be introduced for a PFL to indicate a reference PFL for the PFL. In some cases, if a PFL is not configured with the Reference PFL ID, the PFL is not used for bandwidth aggregation. If a PFL is configured with the Reference PFL ID, the PFL is configured for bandwidth aggregation, and the DL-PRS configured in the PFL is associated with or references the DL-PRS configured in the reference PFL. In some examples, the reference PFL may be the PFL itself.

[0049] For example, the UE 404 may be configured with four DL-PRS PFLs (PFL0, PFL1, PFL2, PFL3), and the LMF may indicate that the reference PFL associated with PFL0 is PFL1 502 and the reference PFL associated with PFL3 is PFL2 504. In such a case, the first PFL group (e.g., Group 1) may include "PFL0+PFL1," and the third group (e.g., Group 3) may include "PFL2+PFL3." For each PFL group, two PFLs may be used for bandwidth aggregation. Furthermore, DL-PRS resources to be aggregated from two or more PFLs are transmitted simultaneously to be equivalent to a larger-bandwidth DL-PRS resource (e.g., PFL2 504, PFL3 506, and PFL1 502 are transmitted simultaneously).

[0050] In some cases, the reference PFL is selected from the multiple PFLs based on one or more rules. The rules may include that the reference PFL has the largest bandwidth among the multiple PFLs, that the reference PFL corresponds to a first resource with the largest received power among the resources corresponding to the multiple PFLs, or that the reference PFL corresponds to a second resource with the largest transmit power among the resources corresponding to the multiple PFLs. For example, from a network configuration perspective, some common parameters may apply (e.g., to the DL-PRS configuration for the multiple PFLs or multiple DL-PRS resource sets to be aggregated). The common parameters may refer to the reference PFL, the reference DL-PRS resource set, or may be configured via higher layer signaling. The network 402 may determine which PFL / DL-PRS resource set is the reference PFL / DL-PRS resource set based on one or more rules (e.g., the PFL with the largest bandwidth may be the reference PFL, or the PFL whose DL-PRS resource has the largest reference signal received power (RSRP) or transmit power may be selected as the reference PFL).

[0051] In some examples, the common parameters (e.g., configuration parameters) may include at least one of the following: SCS, Transmit / Receive Point (TRP) Identification (ID), Antenna Reference Point (ARP), DL-PRS periodicity, number of DL-PRS resource sets, number of PRS resources in a linked PRS resource set, DL-PRS resource set slot offset, DL-PRS resource repetition factor, time gap, muting pattern, DL-PRS symbol number, DL-PRS resource slot offset, DL-PRS resource symbol offset, DL-PRS comb size and RE offset, DL-PRS sequence ID, DL-PRS priority, DL-PRS QCL information, power for DL-PRS transmission, DL-PRS expected reference signal timing difference (RSTD), and expected RSTD uncertainty.

[0052] 6 illustrates an example muting pattern 600 with various arrangements. The muting pattern 600 may include two associated PFLs (PFL1 606 and PFL2 608) with different muting patterns 604 (including resources 602).

[0053] 4 and 5, when two or more PFLs are associated and / or linked, the DL-PRS configuration under each PFL is independent regardless of which example is applied. Therefore, some restrictions may be introduced for multiple associated PFLs (e.g., PFL1 606 and PFL2 608). For example, when multiple PFLs are linked, the configuration (e.g., DL-PRS configuration) may include an indicator indicating whether a configuration parameter of a downlink reference signal is enabled. The indicator may be an enable / disable indicator (e.g., introduced via the network 402) that specifies whether one or some of the DL-PRS configuration parameters are enabled or disabled.

[0054] In some cases, a wireless device (e.g., a UE 404) may receive a downlink reference signal according to a transmission time indicated in the downlink reference signal assistance data. For example, if the DL-PRS configurations under each PFL are independent but no enable / disable indicator is introduced, the UE 404 may receive a DL-PRS based on a common transmission time according to the DL-PRS assistance data. The network 402 may choose a common transmission time instance in which to transmit the DL-PRS. For example, if the muting patterns for the two associated PFLs 606 and 608 are different, an empty instance may indicate that the DL-PRS at that instance is muted. The UE 404 may determine a mute time instance associated with the two PFLs 606 and 608 and measure and process the DL-PRS (e.g., the measured PRS 610) simultaneously transmitted in the two PFLs 606 and 608.

[0055] In some cases, other assistance data for UE-based positioning may be included in the configuration. For example, the LMF may provide position calculation assistance data, and the UE (e.g., UE 404) may request the position calculation assistance data from the LMF. One or more parameters may be part of the position calculation assistance data, and the position calculation assistance data may be updated based on the CA configuration. The configuration may include one or more parameters, such as: first beam information for a first resource of a first resource set of a downlink reference signal for a first PFL; second beam information for a second resource of a second resource set of a downlink reference signal for a second PFL; the first beam information is the same as the second beam information; or the first PFL and the second PFL are associated with the same TRP and are in the same PFL group. Additionally or alternatively, the configuration may include timing error margins for all TRP transmission timing error groups (TEGs) for multiple linked PFLs. For example, the first parameter may be NR-DL-PRS-BeamInfo (e.g., used by a location server to provide spatial direction information of DL-PRS resources). In some cases, the DL-PRS beam information for DL-PRS resource i of DL-PRS resource set j in PFL1 is the same as the DL-PRS beam information for DL-PRS resource i of DL-PRS resource set j in PFL2, where PFL1 and PFL2 are associated with the same TRP and the same PFL group, or are associated with a reference PFL or a PFL in the initial DL BWP.

[0056] The second parameter may be NR-DL-PRS-TRP-TEG-Info (e.g., used by the location server to provide association information of DL-PRS resources with TRP Tx Timing Error Groups (TEGs)). In some cases, for DL-PRS resources associated with one PFL group, a new IE may be included in one NR-DL-PRS-TRP-TEG-InfoPerFreqLayerGroup (e.g., TRP Tx TEG ID associated with transmission of each DL-PRS resource of the PFL group), or may be introduced to represent the timing error margin for all TRP Tx TEGs associated with PFLs within the reference PFL or initial DL BWP. In some cases, the DL-PRS TRP Tx TEG ID in PFL1 is the same as the DL-PRS TRP Tx TEG ID in PFL2, and PFL1 and PFL2 are associated with the same TRP and the same PFL group, or associated with PFLs within the reference PFL or initial DL BWP.

[0057] The third parameter may be NR-RTD-Info (used by the location server to provide time synchronization information between the reference TRP and the list of neighboring TRPs). In some cases, the RTD-InfoListPerFreqLayer may be associated with an RTD-InfoListPerFreqLayerGroup or with a PFL in the reference PFL or initial DL BWP. In some cases, the DL-PRS TRP RTD info in PFL1 is the same as the DL-PRS TRP RTD info in PFL2, and PFL1 and PFL2 are associated with the same TRP and the same PFL group, or with a PFL in the reference PFL or initial DL BWP.

[0058] The fourth parameter may be NR-TRP-LocationInfo (e.g., used by a location server to provide the coordinates of the antenna reference point for a set of TRPs. For each TRP, an ARP location may be provided for each associated PRS resource ID per PRS resource set). In some cases, the NR-TRP-LocationInfoPerFreqLayer may be associated with an NR-TRP-LocationInfoPerFreqLayerGroup or associated with a reference PFL or a PFL within the initial DL BWP. In some cases, the DL-PRS TRP and ARP location information in PFL1 is the same as the DL-PRS TRP and ARP location information in PFL2, and PFL1 and PFL2 are associated with the same TRP and the same PFL Group, or associated with the reference PFL or a PFL within the initial DL BWP.

[0059] The fifth parameter may be NR-TRP-BeamAntennaInfo (e.g., used by a location server to provide beam antenna information for a TRP). In some cases, NR-TRP-BeamAntennaInfoPerFreqLayer may be associated with an NR-TRP-BeamAntennaInfoPerFreqLayerGroup or associated with a PFL within the reference PFL or initial DL BWP. In some cases, the DL-PRS beam antenna information in PFL1 is the same as the DL-PRS beam antenna information in PFL2, and PFL1 and PFL2 are associated with the same TRP and the same PFL group, or associated with a PFL within the reference PFL or initial DL BWP. In some cases, to maximize the performance gain of bandwidth aggregation, the DL-PRS resources of multiple aggregated PFLs are expected to be transmitted by the same TRP via the same antenna panel, aiming in the same spatial direction (e.g., to ensure performance and positioning accuracy).

[0060] 7 is a diagram illustrating an example resource configuration 700 according to various arrangements. The resource configuration 700 may be an example DL-PRS resource configuration structure. In some cases, the resource configuration 700 may support PRS assistance data and / or configuration (e.g., upper layer link for PRS resource set per TRP).

[0061] In some cases, resources for downlink reference signals aggregated from multiple PFLs are transmitted by the same TRP, and two or more resource sets for downlink reference signals are associated with the TRP. For example, a DL-PRS resource set ID may be used to identify the DL-PRS resource set of a TRP across all frequency layers. In some cases, when DL-PRS resources to be aggregated from different PFLs are transmitted by the same TRP, the DL-PRS resource set IDs of the TRPs for multiple PFLs may not be the same. For each PFL per TRP, the UE may be configured with up to two DL-PRS resource sets. By limiting the DL-PRS resources to be aggregated from multiple PFLs to be transmitted by the same TRP and configuring one TRP to be associated with three or more DL-PRS resource sets, DL-PRS resources associated with at least two PFLs are aggregated.

[0062] For example, aiding data for TRP1 708, TRP2 710, and TRP3 712 may be configured in PFL1 702, aiding data for TRP3 712 may be configured in PFL2 704, and aiding data for TRP3 712, TRP4 714, TRP5 716, and TRP6 718 may be configured in PFL3 706. In such a case, TRP3 712 is associated with three PFLs (PFL1 702, PFL2 704, and PFL3 706). The DL-PRS resource set IDs (resource set 724 and resource set 726) per PFL1 702 per TRP3 712 are different from the DL-PRS resource set IDs (resource set 728) per PFL2 704 per TRP3 712 or the DL-PRS resource set IDs (resource set 730) per PFL3 706 per TRP3 712.

[0063] In some cases, an indicator specifying whether a DL-PRS resource or a DL-PRS resource set in one TRP is intended for bandwidth aggregation may also be designed in the per-TRP assistance data or in the per-TRP PRS configuration. In a first example, the configuration may include an indicator indicating whether at least one resource or resource set for a TRP for a downlink reference signal is used for bandwidth aggregation, and the indicator is assistance data specific to the TRP. For example, assistance data for a TRP (e.g., NR-DL-PRS-AssistanceDataPerTRP in an LPP) may include an indicator (e.g., Bandwidth-aggregation-ind) specifying whether a DL-PRS resource configured in the TRP used for bandwidth aggregation can be introduced into the per-TRP assistance data.

[0064] In a second example, the configuration may include at least one of the following: a list of resource sets for downlink reference signals for a TRP (the list of resource sets is used for bandwidth aggregation); or a list of resources for resource sets for downlink reference signaling used for bandwidth aggregation. For example, the assistance data for each TRP may include a PRS configuration (e.g., NR-DL-PRS-Info) including a DL-PRS resource set and a configuration of DL-PRS resources. The assistance data may include a parameter (e.g., nr-DL-PRS-ResourceSetList-CA in NR-DL-PRS-Info) specifying a list 732 of DL-PRS resource sets for one TRP used for bandwidth aggregation (the maximum number of resource sets for bandwidth aggregation may be set to 6). In some cases, the lists of DL-PRS resource sets used for bandwidth aggregation may be linked (e.g., associated with each other). Additionally or alternatively, the assistance data may include a parameter specifying a list of DL-PRS resources for one resource set to be used for bandwidth aggregation (e.g., DL-PRS-ResourceList-CA in NR-DL-PRS-ResourceSet).

[0065] In a third example, the configuration may include either a first indicator indicating whether a resource set for a downlink reference signal is used for bandwidth aggregation (the first indicator in the assistance data for the TRP) or a second indicator indicating whether a resource for a downlink reference signal is used for bandwidth aggregation (the second indicator in the assistance data for the TRP). For example, each DL-PRS resource set (720, 722, 724, 726, 728, and 730) may be configured with an indicator specifying whether the DL-PRS resource set is used for bandwidth aggregation. Additionally or alternatively, each DL-PRS resource may be configured with an indicator specifying whether the DL-PRS resource is used for bandwidth aggregation.

[0066] In a fourth example, the configuration may include an indicator indicating a reference resource set of a resource set for a downlink reference signal, the indicator being in the assistance data for the TRP. For example, the assistance data for each TRP may include an indicator (e.g., Reference-DL-PRS-ResourceSetID) for the DL-PRS resource set to indicate a reference DL-PRS resource set for the DL-PRS resource set. For example, if the DL-PRS resource set 722 is not configured with the reference DL-PRS resource set ID, the DL-PRS resource set 722 is not used for bandwidth aggregation. If the DL-PRS resource set 724 is configured with the reference DL-PRS resource set ID, the DL-PRS resource set 724 is configured for bandwidth aggregation, and the DL-PRS resources configured in the DL-PRS resource set 724 are associated with the DL-PRS resources configured in the DL-PRS resource set 724. In some cases, the reference DL-PRS resource set for the DL-PRS resource set 724 may be the DL-PRS resource set 724.

[0067] 8 illustrates an example muting pattern 800 according to various arrangements. The muting pattern 800 may include a first resource set 806 having a different pattern 804 and a second resource set 808 associated with the first resource set 806. The UE may measure PRSs 810 associated with the two resource sets 806 and 808 based on the muting pattern 804. For example, when two or more DL-PRS resource sets (e.g., resource sets 806 and 808) or DL-PRS resources are associated / linked, the DL-PRS configurations under each DL-PRS resource set 806 and 808 are independent, regardless of which example (e.g., Examples 1-4 described herein with reference to FIG. 7) applies.

[0068] In some cases, the network (e.g., LMF, gNB) may introduce an enable / disable indicator to specify whether one or some of the DL-PRS configuration parameters (e.g., SCS, TRP ID, ARP, DL-PRS periodicity, DL-PRS symbol number, DL-PRS resource slot offset, DL-PRS resource symbol offset, DL-PRS comb size and RE offset, DL-PRS sequence ID, DL-PRS priority, DL-PRS quasi-co-location (QCL) information, power for DL-PRS transmission, DL-PRS expected RSTD and expected RSTD uncertainty) are enabled or disabled. For example, if the DL-PRS configuration under each DL-PRS resource set is independent but an enable / disable indicator is not introduced, the UE may receive the DL-PRS based on a common transmission time according to the DL-PRS assistance data. In some cases, the network may select a common transmission time instance to transmit the DL-PRS. For example, if the muting patterns 804 for two associated DL-PRS resource sets 806 and 808 are different, an empty instance may indicate that the DL-PRS in that instance is muted. The UE may measure and process a DL-PRS 810 in which the DL-PRS is transmitted simultaneously in the two DL-PRS resource sets 806 and 808 (e.g., using two muting time instances).

[0069] 9 illustrates an example aggregation 900 according to various arrangements. The aggregation 900 may be an example of PRS PFL aggregation for a UE in an RRC_INACTIVE state or a UE in an RRC_CONNECTED state. The aggregation 900 may include PFL1 902, PFL2 904, and PFL3 906, where PFL2 904 may include an initial downlink BWP 908. In some examples, the aggregation 900 may support PRS assistance data / configuration (e.g., information elements (IEs) for CA) for downlink bandwidth aggregation.

[0070] In some cases, a new field or a new IE may be introduced to support downlink bandwidth aggregation. A new field (e.g., NR-DL-PRS-PositioningFrequencyLayer-CA) may be for a list of frequency layers for CA. Multiple PFLs within a field / IE may share at least one of various parameters. For example, a configuration for a downlink reference signal may include a list of PFLs for bandwidth aggregation, and the PFLs share at least one of the SCS, comb size, CP, or assistance data per TRP. In some cases, each PFL (e.g., NR-DL-PRS-PositioningFrequencyLayer-CC) may have its own resource bandwidth, starting PRB, and point A. The assistance data per TRP may include at least one or more of the following: TRP ID (e.g., DL-PRS-ID), physical cell identity, NR Cell Global Identifier (NCGI) (e.g., globally unique identification of a cell in NR), cell associated absolute radio frequency channel number (ARFCN) defining the synchronization signal block (CD-SSB) of the TRP, SFN0 offset, ARP, DL-PRS periodicity, DL-PRS resource set slot offset, DL-PRS resource repetition factor, time gap, muting pattern, DL-PRS symbol number, DL-PRS resource slot offset, DL-PRS resource symbol offset, DL-PRS comb size and resource element (RE) offset, DL-PRS sequence ID, DL-PRS priority, DL-PRS QCL information, power for DL-PRS transmission, DL-PRS expected RSTD and expected RSTD uncertainty.

[0071] In some examples, multiple embodiments for configuring DL-PRS bandwidth aggregation to support positioning bandwidth aggregation for UEs in an RRC_INACTIVE state may be possible. In a first embodiment, the configuration for the downlink reference signals may include either a first bandwidth aggregation configuration for bandwidth aggregation of downlink reference signals and a second bandwidth aggregation configuration for bandwidth aggregation of downlink reference signals (the first bandwidth aggregation configuration is used for an RRC connected state of the wireless communication device and the second bandwidth aggregation configuration is used for an RRC inactive state of the wireless communication device), or a bandwidth aggregation configuration for bandwidth aggregation of downlink reference signals for both an RRC connected state of the wireless communication device and an RRC inactive state of the wireless communication device. For example, each configuration may include NR-DL-PRS-PositioningFrequencyLayer-CA and NR-DL-PRS-PositioningFrequencyLayer-CA-inactive, and a single configuration may include NR-DL-PRS-PositioningFrequencyLayer-CC.

[0072] In a second embodiment, the configurations for downlink reference signals may include a bandwidth aggregation configuration for bandwidth aggregation of downlink reference signals for an RRC inactive state of the wireless communication device and multiple associated PFLs associated with the downlink reference signals in the initial downlink BWP for the RRC inactive state of the wireless communication device. For example, when one DL-PRS bandwidth aggregation configuration dedicated to a UE in an RRC_INACTIVE state is introduced, configurations of multiple associated PRS PFLs (e.g., PFL1 902, PFL2 904, and PFL3 906) are associated with PRSs in the initial downlink BWP 908 for the UE in the RRC_INACTIVE state. In some cases, only PFLs having SCSs and CPs for PRS resources that are the same as the PRS resources of the initial downlink BWP 908 may be used for bandwidth aggregation. For example, PFL1 902, PFL2 904, and PFL3 906 are associated and used for bandwidth aggregation, and only the PRS resources in PFL2 904 are located within the initial downlink BWP 908. PFL1 902 and PFL3 906 share the DL-PRS resource configuration of PFL2 904, including the SCS and CP.

[0073] In a third embodiment, a configuration for a downlink reference signal may include multiple PFLs associated with a reference PFL for a downlink reference signal for an RRC inactive state of a wireless communication device. In some cases, the first SCS of the multiple associated PFLs, the second SCS of the initial downlink BWP, the first CP of the multiple associated PFLs, and the CP SCS of the initial downlink BWP are the same or different. In some cases, the reference PFL may be within the initial downlink BWP, and at least one resource configured in the reference PFL is within the initial downlink BWP, or the reference PFL is outside the downlink BWP, and at least one resource configured in the reference PFL is outside the initial downlink BWP. For example, if a configuration of multiple associated PRS PFLs is associated with a reference PRS PFL for a UE in an RRC_INACTIVE state, the reference PFL may be either within the initial downlink BWP 908 (e.g., the DL-PRS resource configured in the reference PFL is within the initial downlink BWP 908) or outside the initial downlink BWP. In such cases, the SCS and CP of the multiple associated PFLs may be the same as or different from the SCS and CP of the initial downlink BWP 908. In some cases, two or more of the various embodiments may be combined.

[0074] 10 illustrates an exemplary wireless communication 1000 in accordance with various arrangements. The wireless communication 1000 may include a UE 1002, an LMF 1004, and an NG-RAN node 1006. In some cases, the LMF 1004 may be a first node of a network (e.g., a network node), and the node 1006 may be a second node of the network (e.g., a network node). The wireless communication 1000 may support a signaling procedure for PRS assistance data. In some examples, the signaling presented in the wireless communication 1000 may represent signaling between the LMF 1004 and the NG-RAN node 1006, as well as request signaling transmitted from the UE 1002 to the LMF 1004.

[0075] In some cases, the LMF 1004 and the node 1006 may perform a PRS configuration exchange procedure. The LMF 1004 may send a request for a configuration for downlink reference signals for bandwidth aggregation, where the request includes a bandwidth aggregation indicator. The indicator may include either a bit indicating whether bandwidth aggregation for the downlink reference signals is required, or multiple bits indicating whether bandwidth aggregation for the downlink reference signals is required and the number of PFLs used for bandwidth aggregation. For example, the LMF 1004 may send a PRS configuration request 1008 to the node 1006. The request 1008 may include information listed in an IE including a requested PRS configuration for transmission by the LMF 1004. The information may include: PRS bandwidth, whereby the LMF 1004 can request a larger bandwidth for the DL-PRS resource set (e.g., if the requested bandwidth is larger than 272 PRBs, bandwidth aggregation-related configuration is enabled); bandwidth aggregation indicator, where the bandwidth aggregation indicator may include either one bit (e.g., 0 indicates that bandwidth aggregation configuration for the PRS is not required, and 1 indicates the opposite) or multiple bits (e.g., 0 or 00 indicates that bandwidth aggregation configuration for the PRS is not required, and the larger the number, the larger the number of frequency layers used for bandwidth aggregation); and / or the number of frequency layers for bandwidth aggregation.

[0076] The node 1006 may send a response to the LMF 1004 with the PRS configuration. For example, the response may be a PRS configuration response / failure 1010. The response 1010 may include information listed in an IE including the PRS configuration for the TRP. The information may include: an indicator specifying whether the DL-PRS resource / resource set configured in the TRP is used for bandwidth aggregation; a parameter specifying a list of DL-PRS resource sets for the TRP used for bandwidth aggregation; a parameter specifying a list of DL-PRS resources for one resource set used for bandwidth aggregation; an indicator for each DL-PRS resource set specifying whether the respective DL-PRS resource set is used for bandwidth aggregation; an indicator for each DL-PRS resource set indicating a reference DL-PRS resource set for the DL-PRS resource set; and / or a reference DL-PRS resource set ID and a configuration associated with the reference DL-PRS resource set.

[0077] The UE 1002 may transmit a request 1012 for DL-PRS assistance data to the LMF 1004. The request 1012 may include information listed in an IE including a requested PRS configuration for transmission by the UE 1002. The information may include an indicator specifying whether PRS bandwidth aggregation is requested; an indicator for each requested PFL indicating whether the PFL is used for bandwidth aggregation; an indicator for the PRS bandwidth (e.g., the UE 1002 may request a larger bandwidth for the DL-PRS resource set); an indicator requesting a reference PFL ID; and / or an indicator requesting a PFL group. In response to receiving the request 1012, the LMF 1004 may transmit the DL-PRS assistance data to the UE 1002 via signaling 1014.

[0078] 11 is a diagram illustrating an example wireless communication 1100 according to some arrangements. The wireless communication 1100 may include a UE 1102 and an LMF 1104. In some cases, the wireless communication 1100 may be a location information transfer procedure.

[0079] In some cases, the UE 1102 may report PRS measurements. For example, the UE 1102 may receive a measurement request (e.g., a request for location information 1106) from the LMF 1104 (e.g., a network) indicating that the wireless communication device is requested to report positioning measurement results for bandwidth aggregation (e.g., based on downlink reference signals). The UE 1102 may report the positioning measurement results to the LMF 1104, where the results include at least one of a measurement indicator, a first identifier of a first resource or first resource set, a second identifier of a second resource or second resource set, and / or a list of resource set identifiers or resource identifiers. The measurement indicator may indicate that the positioning measurement results were determined by aggregating resources of the same TRP for the downlink reference signals. A first identifier for measuring the downlink reference signals and a second identifier for measuring the downlink reference signals for the measurement element. A list for measuring the downlink reference signals for each TRP for the measurement element.

[0080] In some cases, for an LMF-initiated location information transfer procedure, the LMF 1104 may first send a request location information message 1106 to the UE 1102, and the UE 1102 may respond to the LMF 1106 with location information 1108. In some cases, for a UE-initiated location information transfer procedure, the UE 1102 may send a location information message 1108 to the LMF 1104 via LPP signaling (e.g., without receiving a request 1106).

[0081] In some examples, the request 1106 may include information listed in an IE including requested measurements for transmission by the LMF 1104. The information may include: a DL-PRS CA measurement request indicating whether the target device is requested to report DL-PRS bandwidth aggregation measurements; a measurement request for a specific PFL group; a number of aggregated DL-PRS resource sets (indicating the number of aggregated DL-PRS resource sets that the UE 1102 (e.g., the target device) is requested to measure and report for one TRP or per pair of TRPs); and / or a maximum number of aggregated DL-PRS resource sets per TRP or per pair of TRPs (indicating the maximum number of aggregated DL-PRS resource sets that the target device is requested to measure and report for one TRP or per pair of TRPs. The maximum number may be defined across all positioning frequency layers).

[0082] In some examples, the location information 1108 may include information listed in an IE containing positioning measurements for transmission by the UE 1102. The information may include: a DL-PRS indicating whether the measurement elements provided by the UE 1102 are derived by aggregated DL-PRS resources (e.g., dl-PRS-ID) from the TRP; a CA measurement indicator (e.g., nr-DL-PRS-CA-ind); one or more further DL-PRS resource set IDs for each positioning measurement provided by the UE 1102 per TRP (for one measurement (e.g., RSTD, Rx-Tx time difference), one DL-PRS resource ID and DL-PRS resource set ID may be provided), and / or; a list of DL-PRS resource set IDs and DL-PRS resource IDs for each positioning measurement provided by the UE 1102 per TRP (for one measurement element (e.g., RSTD, Rx-Tx time difference), the UE 1102 may provide a list of DL-PRS resource set IDs (e.g., nr-DL-PRS-ResourceSetID-list) and a list of DL-PRS resource IDs (e.g., nr-DL-PRS-ResourceID-list)); whether / which of one, two, or three PFLs are used for measurement and reporting. In some cases, for additional DL-PRS resource set IDs, for CA, the UE 1102 may need to further provide more DL-PRS resource set and DL-PRS resource ID information for a single measurement. For example, for each DL-TDOA measurement report element (e.g., NR-DL-TDOA-MeasElement), the UE 1102 may provide the DL-PRS resource set ID appended with the additional DL-PRS resource set IDs (e.g., nr-DL-PRS-additional-ResourceSetID or nr-DL-PRS-additional-ResourceSetID-list) and the DL-PRS resource ID appended with the additional DL-PRS resource IDs (e.g., nr-DL-PRS-additional-ResourceID or nr-DL-PRS-additional-ResourceID-list).

[0083] 12 illustrates an example aggregation 1200 according to various arrangements. The aggregation 1200 may include a first CC 1202, a second CC 1204, and a third CC 1206. The aggregation 1200 may be an example of a three-CC carrier aggregation, where CCs 1202, 1204, and 1206 are aggregated together as CC CA 1208. In some cases, CC 1204 may include an initial uplink BWP 1210.

[0084] From an uplink perspective, a UE in RRC_INACTIVE mode may be configured with SRS resources for positioning inside or outside the initial BWP 1210. SRS resources for positioning outside the initial BWP 1210 in RRC_INACTIVE mode are configured in the same band and CC (e.g., CC 1204) as the initial uplink BWP 1210. However, the available bandwidth is significantly limited for UEs transmitting SRS in the RRC_INACTIVE state. At least one of the following SRS types (periodic, semi-persistent, aperiodic) may be supported for bandwidth aggregation positioning for UEs in RRC_CONNECTED or RRC_INACTIVE mode.

[0085] An SRS for positioning purposes transmitted simultaneously across multiple CCs can significantly expand the bandwidth of the SRS resources, which can result in improved positioning accuracy. For a UE in RRC_INACTIVE state, the initial uplink BWP is configured in CC 1204. Based on the UE capabilities, the UE may be configured to transmit an SRS in CC 1202, CC 1204, and / or CC 1206. In some cases, CC aggregation 1208 may be multiple associated SRSs.

[0086] In some cases, SRS signaling procedures may be described. For example, a UE may receive an SRS configuration for bandwidth aggregation from a base station (e.g., a second node of a network). The UE may transmit an SRS to the base station according to the SRS configuration. In a first example, the SRS configuration for multiple CCs may be associated with an SRS configuration in an initial uplink BWP (e.g., BWP 1210) or a CC (e.g., CC 1204) that includes the initial BWP. In a second example, transmitting an SRS on an initial CC among the multiple CCs has a higher priority than transmitting an SRS on another CC among the multiple CCs. In a third example, the SRS configuration for the multiple CCs is associated with a reference CC. In some implementations, a UE may receive multiple first cells via RRC signaling and multiple second cells used in bandwidth aggregation for SRS via RRC signaling, where the multiple second cells are selected based on the multiple first cells. In some cases, one or all of the examples may be used by the wireless communications system.

[0087] In a first example, for one CC group, the SRS configuration on multiple CCs is associated with the SRS configuration within the initial uplink BWP 1210 or the CC 1204 that includes the initial uplink BWP 1210. In some cases, SRS resources may be configured both within the initial uplink BWP 1210 and outside the initial uplink BWP 1210 based on UE capabilities. In some examples, if the UE supports uplink positioning bandwidth aggregation, the priority of transmitting SRS on the initial CC is higher than on other CCs. For example, if the UE transmits SRS on only one CC, the default configuration is to transmit SRS on CC 1204. If the UE transmits SRS on two CCs, the default configuration is to transmit SRS on either CC 1204 and CC 1202 or CC 1204 and CC 1206. If the UE transmits SRS on three CCs, the default configuration is to transmit SRS on CC 1204, CC 1202, and CC 1206. In a second example, the configuration of the SRS on multiple CCs is associated with a reference CC. In a third example, the reference CC can be inside or outside the initial uplink BWP 1210. In a fourth example, the SCS and CP of the SRS resources can be the same as or different from the SCS and CP of the initial uplink BWP 1210. In a fifth example, based on UE capabilities, SRS resources can be configured for a UE outside the initial uplink BWP 1210, with the configuration including frequency domain location and bandwidth, SCS, and CP. In some cases, two or more of the examples may be combined.

[0088] In some examples, the SRS configuration for bandwidth aggregation may be for the RRC inactive state in the RRC release message. In some cases, one of the IEs may include the SRS configuration without changing the RRC inactive and suspend configurations, or the SRS configuration for bandwidth aggregation is added to the RRC inactive and suspend configurations. In some cases, to support SRS carrier aggregation, additional SRS configurations in serving cells other than one of the initial BWPs should be introduced and signaled by RRC release signaling. For example, the configuration may be configured in an RRC release according to either a first method including adding a new IE (e.g., SRS-PosRRC-InactiveCAConfig) including SRS CA-related configuration for the UE in RRC_INACTIVE state without changing SRS-PosRRC-InactiveConfig in SuspendConfig, or a second method including updating SRS-PosRRC-InactiveConfig in SuspendConfig by adding SRS CA-related configuration for the UE in RRC_INACTIVE state (e.g., additional-ServingCell-list, additional-ServingCell, where each additional-ServingCell includes at least one of the following: serving cell ID, srs-PosConfigNUL, bwp-NUL-r17, inactivePosSRS-TimeAlignmentTimer, inactivePosSRS-RSRP-ChangeThreshold, absoluteFrequencyPointA, p-Max, frequencyShift7p5khz).

[0089] In some examples, the SRS CA-related configuration may include one of the following: The SRS configuration may include a list of additional serving cells other than the initial CC for bandwidth aggregation, each of which is associated with or includes one or a list of BWP configurations and positioning SRS configurations; Multiple serving cells involved in bandwidth aggregation share the same time alignment timer and receive power (e.g., RSRP) change thresholds; The SRS configuration is received from the network or includes SRS location configurations of multiple associated BWPs that share a common SRS configuration corresponding to a reference SRS location configuration. The common SRS configuration may include one or more of: SRS resource set ID, SRS resource set ID list, SRS resource ID, SRS resource ID list, resource type (aperiodic, semi-persistent, periodic), alpha value for SRS power control, p0 value for SRS power control, path loss reference RS (SSB, DL-PRS), number of SRS ports, transmit comb size, comb offset, cyclic shift, resource mapping (start position, number of symbols), frequency domain shift, frequency hopping, group or sequence hopping, sequence ID, and / or spatial relationship information (serving cell RS, SSB, DL-PRS). To maximize performance gain, SRS resources on multiple aggregated CCs may be transmitted based on the following: the same spatial relationship; the number of SRS resource sets (e.g., SRS resource sets in linked carriers may be linked one-to-one by default, where SRS resource set m in carrier i is linked with SRS resource set m in carrier i+1); and / or the number of SRS resources for positioning (e.g., SRS resources in linked SRS resource sets in linked carriers may be linked one-to-one by default, where the n-th SRS resource in SRS resource set m in carrier i is linked with the n-th SRS resource in SRS resource set m in carrier i+1).The SRS configuration includes different spatial relationship configurations for different CCs (e.g., SSB in CC1202 and DL-PRS in CC1204), and the network enables a first spatial relationship of the different spatial relationship configurations and disables a second spatial relationship of the different spatial relationship configurations.

[0090] The SRS CA-related configuration may also include one of the following: The SRS configuration may include a list of serving cells, and the SRS resources configured in the list of serving cells are associated and participate in carrier aggregation, with each serving cell being associated with or including one of a list of BWP configurations or SRS-pos configurations. The SRS configuration may include a list of BWPs participating in carrier aggregation, with each BWP configuration being associated with a list of SRS-pos configurations. With respect to the list of BWPs to be aggregated (e.g., a BWP may be configured for each serving cell), the BWPs have different locations and bandwidths but the same SCS and CP configurations. A reference serving cell and / or reference BWP may be indicated to the UE, and in such cases, the SRS-pos configurations of other serving cells / BWPs may be associated with the SRS-pos configuration (e.g., the reference SRS-pos configuration) of the reference cell / BWP. Each serving cell involved in bandwidth aggregation may be independently configured with a time alignment timer and RSRP change threshold.

[0091] 13 illustrates an example MAC-CE 1300 according to various arrangements. The MAC-CE 1300 may include a field 1302 for multiple activated cells selected from a cell list and a field 1304 for spatial relationship information corresponding to resource IDi in one serving cell and resource IDi in another serving cell. The MAC-CE 1300 may be an SP positioning SRS activated / deactivated MAC-CE.

[0092] For periodic SRS for positioning, linkage between carriers configured by RRC may be sufficient. After RRC configuration, SRS on different linked carriers are transmitted periodically within the same symbol. The TRP can then perform SRS measurement and reporting based on the aggregated SRS transmission. In some cases, for semi-persistent SRS, the wireless communication device may receive an SRS activation / deactivation MAC-CE for bandwidth aggregation from the network. The MAC-CE 1300 may include at least one of a list of activated serving cell identifiers (the list of activated serving cell identifiers is part of the RRC-configured list of serving cell identifiers) or a list of activated BWP identifiers (the list of activated BWP identifiers is part of the RRC-configured list of BWP identifiers). In some cases, this may provide flexibility to select to activate or deactivate some or all of the serving cells / BWPs. In some examples, for semi-persistent positioning SRS (SP SRS), the network may provide multiple SRS resource and / or resource set configurations to the UE via RRC. The network may use the MAC-CE to activate / deactivate one or more SRS resources and / or BWP and resource sets of the serving cell. For semi-persistent SRS activation / deactivation, one or more of the following options may be applied: A first option may include: when carrier i is linked with carrier j by RRC signaling for positioning SRS BW aggregation, the MAC CE that activates / deactivates the SRS resource set with ID m on carrier i may activate / deactivate the SRS resource set with ID m on carrier j.A second option may include: when carrier i is linked with carrier j by RRC signaling for positioning SRS BW aggregation, a MAC CE that activates / deactivates an SRS resource set with ID m on carrier i may activate / deactivate an SRS resource set with ID m on carrier i, or may activate / deactivate an SRS resource set with ID m on both carrier i and carrier j.

[0093] In some cases, the MAC-CE can schedule SRS resources or SRS resource sets from multiple CCs, and the SRS resources are transmitted simultaneously within the multiple CCs. The MAC-CE 1300 may activate the SRS resources or SRS resource sets of the reference CC or CC containing the initial uplink BWP. The association between the reference CC and other corresponding CCs may be configured by higher layer signaling indicating that the corresponding CCs are simultaneously activated / deactivated when the reference CC is activated / deactivated. The MAC-CE 1300 may be a new MAC-CE or a modification of a previous MAC-CE. In some cases, the modified MAC-CE may include either an indicator indicating whether the MAC-CE 1300 is used for a CA use case or an indicator indicating whether the activated SRS resource set is from the reference serving cell and / or BWP.

[0094] In some examples, the RRC may provide one or more serving cell lists and / or BWP lists, each configured with an ID. The MAC-CE 1300 may also include a cell list ID 1304 and a BWP list ID 1306 for the SRS resource set, and may select cells / BWPs for one or more SRS resource sets to activate and cells / BWPs for one or more SRS resource sets to deactivate.

[0095] In some examples, the spatial relationship information corresponding to resource ID i in one serving cell and the spatial relationship information corresponding to resource ID j in another serving cell may be the same, and the two SRS resources are expected to be associated and transmitted simultaneously. For example, MAC-CE 1300 may instruct the activation of SRS resource set 1 and SRS resource set 2. Each resource set includes three SRS resources (SRS resources 1, 2, and 3), and the spatial relationship information of SRS resource 1 in SRS resource set 1 and the spatial relationship information of SRS resource 1 in SRS resource set 2 are the same and transmitted simultaneously.

[0096] In some cases, the MAC-CE 1300 may include a first field 1302, a second field 1304, a third field 1306, a fourth field 1308, a fifth field 1310, and a sixth field 1312. Field 1302 may indicate whether to activate or deactivate the indicated SP positioning SRS resource set. This field is set to 1 to indicate activation, otherwise it indicates deactivation. Field 1304 may be a cell list ID configured at a higher layer. Field 1306 may be a BWP list ID configured at a higher layer. Field 1308 may be a cell ID indicating the identity of the serving cell. The serving cell may include the activated / deactivated SP positioning SRS resource set. If field 1312 (e.g., the C field) is set to zero, field 1308 may indicate the identity of the serving cell, including all resources indicated by the spatial relationship for the resource IDi field, if present. The length of field 1308 may be 5 bits. Field 1310 may be a BWP ID indicating an uplink BWP as a code point of the Downlink Control Information (DCI) Bandwidth Portion Indicator field that includes the activated / deactivated SP positioning SRS resource set. If field 1312 is set to zero, field 1310 may indicate the identity of the BWP, including all resources indicated by the spatial relationship for the Resource IDi field, if present. The length of field 1310 may be 2 bits.

[0097] 14 is a diagram illustrating an example MAC-CE 1400 according to various arrangements. The MAC-CE 1400 may include one or more fields associated with the MAC-CE 1300. The MAC-CE 1400 may include a field 1402 (e.g., an I field). In some cases, the MAC-CE 1400 may be an example of modifying a MAC-CE to be a MAC-CE for SP positioning SRS activation / deactivation for CA cases.

[0098] In some cases, field 1402 may indicate whether MAC-CE 1400 is used for CA and / or whether the activated SRS resource set is from a reference serving cell / BWP. For example, if field 1402 is equal to 1, MAC-CE 1400 may be used for CA; otherwise, MAC-CE 1400 may be a MAC-CE used to activate / deactivate SRS resources in one serving cell and one BWP.

[0099] 15A and 15B illustrate example wireless communications 1500 and 1501 according to various arrangements. The wireless communications 1500 and 1501 may include a first UE 1502 and a second UE 1506 in sidelink wireless communications. For example, the UE 1502 may transmit a reference signal 1504 (e.g., an SL-PRS) to the UE 1506. In some cases, the UE 1502 may be the transmitting UE, and the UE 1506 may be the receiving UE.

[0100] In some cases, the UE may be outside the coverage area of ​​the network, the UE may be within coverage area of ​​the network but the channel quality may be insufficient, and / or the UE may decide to calculate a high-accuracy position for the UE. For all of these use cases, sidelink technologies can be applied (e.g., vehicle-to-everything (V2X) where the UE should perform positioning). The embodiments described herein may provide a physical layer filtering mechanism that enables the UE to verify the SL-PRS to be measured.

[0101] For NR sidelink positioning, to obtain the target UE's location information, the positioning method may use reference signals (e.g., SL-PRS 1504) transmitted between UEs. The resulting measurements may be used to determine the target UE's location. For example, the UE may be configured by the positioning layer with one or more sidelink resource pools for positioning purposes (e.g., a resource pool that can be used for SL-PRS transmission / reception or positioning purposes may be an SL-PRS resource pool). The resource pool may be either a shared resource pool for sidelink communications or a dedicated resource pool for SL-PRS. The SL-PRS resource pool may be associated with either sidelink resource allocation scheme 1 (e.g., network-centric SL-PRS resource allocation) or sidelink resource allocation scheme 2 (e.g., UE-autonomous SL-PRS resource allocation).

[0102] Some example filtering mechanisms may include both Layer 1 (L1) filtering (physical layer filtering) and Layer 2 filtering (MAC layer filtering), where filtering may be a mechanism to ensure that the SL-PRS is measured from the "Tx UE-Rx UE" link (e.g., not from a different link). The "Tx UE-Rx UE" link may be unicast, groupcast, or broadcast. Regarding sidelink positioning, unlike sidelink data (carried on the physical sidelink shared channel (PSSCH)), its signaling flow includes the physical (PHY), MAC, RLC, PDCP, and NAS layers, and the SL-PRS may be generated, transmitted, received, and measured or processed at the PHY layer.

[0103] For the SL-PRS resource pool, sidelink control information (SCI) including a cast type and source / destination UE information is used to trigger and / or reserve SL-PRS resources. For example, if the cast type indicated in the SCI of a transmitting UE (e.g., UE 1502) is unicast, the SL-PRS 1504 reserved by the SCI can be decoded by a specific receiving UE (e.g., UE 1506). The cast type can also be indicated as groupcast or broadcast, in which case one source UE 1502 is associated with multiple destination UEs 1506. Multiple destination UEs 1506 can decode and measure the SL-PRS 1504 transmitted from the source UE 1502. The SCI can be a first-stage SCI, a second-stage SCI, or an SCI designed for sidelink (SL) positioning.

[0104] In some cases, the UE 1502 may receive the SCI at the physical layer. The SCI may include a source identifier and a destination identifier. In some cases, the source identifier and the destination identifier may each be 24 bits long. In some cases, the UE 1502 may perform pure physical layer filtering using the source identifier and the destination identifier. The UE 1502 may receive a sidelink reference signal from the UE 1506 based on the SCI. For example, the UE 1502 may set the bits of the source ID (including source UE information) and the destination ID (including destination UE information) at the physical layer to 24 bits for pure physical layer filtering. If the SCI includes the source ID and the destination ID, the source ID is expanded from 8 bits to 24 bits, and the destination ID is expanded from 16 bits to 24 bits. If an SL-PRS sequence ID is associated with information associated with the UE 1502 and / or information associated with the UE 1506, the bits of the ID information for each UE are 24 bits.

[0105] 15B, the PHY layers of both UEs are shown. For example, the PHY layer of the UE 1502 may include a source ID 1508 and a destination ID 1510, and the PHY layer of the UE 1506 may include a source ID 1512 and a destination ID 1514. In a first example, if SL-PRS is configured in a dedicated SL-PRS resource pool and the case type indicated in the SCI of the UE 1502 is unicast, the UE 1506 may determine whether the 24 bits of the destination ID 1514 are equal to the 24 bits of the source ID 1508 and / or whether the 24 bits of the source ID 1512 are equal to the 24 bits of the destination ID 1510. If the condition is met (e.g., they are equal), the UE 1506 may process the SL-PRS resources associated with the SCI of the UE 1502. In a second example, if the SL-PRS is configured in a dedicated SL-PRS resource pool and if the cast type indicated in the SCI of the UE 1502 is groupcast and / or broadcast, the UE 1506 may determine whether the 24 bits of the destination ID 1514 are equal to the 24 bits of the destination ID 1510 and / or whether the 24 bits of the source ID 1512 are equal to the 24 bits of the source ID 1508. If the condition is met (e.g., they are equal), the UE 1506 may process the SL-PRS resources associated with the SCI of the UE 1502.

[0106] 16 is a flowchart illustrating an example method 1600 for enhancing positioning of a wireless device with various arrangements. In some cases, the method 1600 may include a PRS measurement window (e.g., a period of time).

[0107] In some cases, for the N2 or T2 cases, the PRS processing window (PPW) measurement period formula in the CA scenario may be calculated according to the following formula: If all positioning frequency layers are in case 2,

number

[0108] In the first example, if the L1 PFLs to be aggregated are case 2, T total may be calculated according to one or more of the following formulas:

number

number

[0109] In the second example, in the case of carrier aggregation, the PRS is transmitted simultaneously on multiple PFLs, so the position of the PPW is the same on multiple carriers, and T total can be derived from the calculation of the reference PFL. Due to the complexity of processing multiple PFLs simultaneously, the formula for calculating the reference PFL (e.g., r) can be updated to the following formula:

number

number

number

[0110] For example, at 1602, a wireless communication device may receive a configuration for downlink reference signals for bandwidth aggregation from a first node of a network. At 1604, the wireless communication device may receive downlink reference signals in accordance with the configuration from a second node of the network. In some cases, the downlink reference signals for bandwidth aggregation are measured within a measurement window. The measurement window may be determined based on at least one of multiplying a first parameter based on at least one of the number of PFLs or the bandwidth of the downlink reference signals to be aggregated, or adding a second parameter based on at least one of the number of PFLs or the bandwidth of the downlink reference signals to be aggregated. At 1606, the wireless communication device may determine positioning measurements for the downlink reference signals for bandwidth aggregation.

[0111] 17 is a flowchart illustrating an example method 1700 for positioning enhancement of a wireless device according to various arrangements. In some cases, the method 1700 may include reporting UE capabilities.

[0112] For example, the UE may report its capability to support positioning measurements on frequency layers within a band to the network. In some cases, the network may include an LMF, a gNB, or both. Regarding DL-PRS bandwidth aggregation, in which the UE may process DL-PRS from multiple aggregated PFLs, at least one of the following UE capabilities may be indicated: The capabilities may include support for PRS aggregation processing in the RRC_INACTIVE state. The capabilities for RRC_INACTIVE may include support for a maximum number of aggregated PFLs, and a UE in the RRC_INACTIVE state may support aggregated measurements for up to F frequency layers. The capabilities for RRC_INACTIVE may include support for a maximum number of aggregated DL-PRS resources per TRP, and a UE in the RRC_INACTIVE state may support aggregated measurements for up to S DL-PRS resource sets from one TRP. The capabilities may include support for a maximum bandwidth considering bandwidth aggregation for a UE in the RRC_INACTIVE state. The capability may include support for DL-PRS processing inside and outside the initial downlink BWP, which may indicate that the UE has the capability to process DL-PRS both inside and outside the downlink BWP (e.g., for multiple PFL aggregation, where one PFL is inside the initial downlink BWP and other PFLs are outside the initial downlink BWP). The capability may include support for DL-PRS processing inside and outside the initial downlink BWP (e.g., for multiple PFL aggregation, where one PFL is inside the initial downlink BWP and other PFLs are outside the initial downlink BWP). The capability may include support for DL-PRS processing both inside and outside the downlink BWP (e.g., for multiple PFL aggregation, where one PFL is inside the initial downlink BWP and other PFLs are outside the initial downlink BWP). The capability may include support for T for a given maximum bandwidth for a UE in RRC_INACTIVE state. f N DL-PRS symbols in ms that the UE can process per ms f (e.g., given a duration of DL-PRS symbols N in ms, a UE may process every T ms for a given maximum bandwidth in a non-CA scenario). In some cases, the threshold: N f is less than N or less than or equal to N:N f = N-delta; or T f is greater than T or greater than or equal to T:T f= T + delta may be satisfied for the capability to support durations. The capability may include support for the number of PRSs that can be processed per slot for a UE in RRC_INACTIVE state, the number being reduced compared to a non-CA scenario. The capability may include support for DL-PRS processing samples in the RRC_INACTIVE state for bandwidth aggregation. The capability may include support for aggregated PRS measurements in the RRC_INACTIVE state for DL-TDOA. The capability may include support for aggregated PRS measurements in the RRC_INACTIVE state for multi-RTT.

[0113] In some cases, with regard to SRS bandwidth aggregation, in which a UE may transmit SRS for positioning purposes from multiple aggregated carriers, at least one of the following UE capabilities may be indicated: The capabilities may include support for positioning SRS transmission in the RRC_INACTIVE state for an initial uplink BWP (e.g., periodic). For example, in a CA scenario, a maximum number of SRS resource sets, persistent / semi-persistent (P / SP) SRS resources, P / SP resources per slot, periodic SRS resources, and / or periodic SRS resources per slot may be supported. The capabilities may include support for positioning SRS transmission in the RRC_INACTIVE state configured outside the initial uplink BWP (e.g., periodic), for example, bandwidth per SCS within one CC, bandwidth per SCS in multiple aggregated CCs, different numerology and / or center frequencies, support for SRS operation without restrictions on CCs, switchover time between SRS CA transmission within the initial uplink BWP and other transmissions or reception within the initial downlink BWP, SRS resource sets in CA scenarios, P / SP SRS resources, P / SP resources per slot, periodic SRS resources, and / or a maximum number of periodic SRS resources per slot may be supported. The capabilities may include support for positioning SRS transmission in the RRC_INACTIVE state configured both inside and outside the initial uplink BWP (e.g., periodic). The capabilities may include support for positioning SRS transmission in the RRC_INACTIVE state for the initial BWP (e.g., semi-persistent). The capabilities may include support for positioning SRS transmission in an RRC_INACTIVE state configured for outside of an initial uplink BWP (e.g., semi-persistent). The capabilities may include support for positioning SRS transmission in an RRC_INACTIVE state configured both inside and outside of an initial uplink BWP (e.g., semi-persistent).

[0114] For example, at 1702, a wireless communication device may report its capabilities to a network. The capabilities may include a duration of a downlink reference signal that the wireless communication device is capable of processing over a period of a maximum bandwidth when the wireless communication device is in an RRC inactive state. In some cases, the symbol duration may correspond to a number of symbols that is less than or equal to a first threshold, or the period may be greater than or equal to a second threshold. At 1704, the wireless communication device may receive a configuration for a downlink reference signal for bandwidth aggregation from a first node of the network. At 1706, the wireless communication device may receive a downlink reference signal in accordance with the configuration from a second node of the network. At 1708, the wireless communication device may determine positioning measurements for the downlink reference signal for bandwidth aggregation.

[0115] 18 is a diagram illustrating example mappings 1800 according to various arrangements. The mappings 1800 may outline mappings in one example embodiment for SRS DCI indications related to bandwidth aggregation. In some cases, the mappings 1800 may be related to multi-cell enhancements.

[0116] For aperiodic SRS, support for a single DCI triggering an SRS resource set within co-linked carriers, as with semi-persistent SRS, may reduce DCI overhead. In some cases, multiple physical downlink shared channels (PDSCHs) / physical uplink shared channels (PUSCHs) scheduled by a single DCI may reduce DCI control overhead and increase spectral efficiency in CA operation. For example, the maximum number of cells simultaneously scheduled by DCI format 1_X / 0_X is four, such that the network may configure up to four cells for DCI format 1_X / 0_X. These four cells may make up a set of cells configured via RRC signaling (e.g., RRC-configured cell set 1 1802). The DCI may include an indicator of multiple simultaneously scheduled cells (e.g., DCI-configured simultaneously scheduled cells 1804). In some cases, the DCI may include an indicator of cells 1804 based on an RRC configuration or part of an RRC-configured cell set. In some cases, the cell 1804 indicator may be for a multi-cell PUSCH / PDSCH transmission.

[0117] 19 illustrates an example mapping 1900 according to various arrangements. The mapping 1900 may outline a mapping in one example embodiment for an SRS DCI indication related to bandwidth aggregation. In some cases, the mapping 1900 may relate to in-band contiguous carriers.

[0118] For example, bandwidth aggregation for positioning measurements may include aggregation across up to three in-band contiguous carriers. DCI may schedule SRS resources from multiple aggregated CCs. DCI co-scheduled cells for positioning bandwidth aggregation may be based on higher layer configuration of the network (e.g., a gNB may configure up to three cells via RRC signaling). In some cases, the cell configured for positioning bandwidth aggregation via RRC signaling may be RRC-configured cell set 2 1912 for positioning CA 1912.

[0119] In some examples, cell set 2 1912 is associated with cell set 1 1902. For example, cell set 1 1902 may be a parent set of cells to cell set 2 1912, or the selection of cells in cell set 2 1912 is based on cell set 1 1902. For example, with reference to FIG. 19 , cell set 1 1902 may include cell 1 1904, cell 2 1906, cell 3 1908, and cell 4 1910. cell set 2 may select two or three cells (e.g., cell 1 1904 and cell 3 1908) from cell set 1 1902. cell set 2 1912 may not select cells not included in cell set 1 1902. By configuring cell set 2 1912, the network may inform the UE that the SRS resources of cell set 2 1912 are aggregated and expected to be transmitted from the same panel, same antenna panel, and / or same port.

[0120] 20 is a diagram illustrating an example mapping 2000 according to various arrangements. The mapping 2000 may outline a mapping in one example embodiment for an SRS DCI indication related to bandwidth aggregation. In some cases, the mapping 2000 may be related to DCI scheduling.

[0121] For example, the DCI scheduling may include DCI 2002 for cell set 1 1902 and cell set 2 1912 as described herein with reference to Figure 19. Cell set 1 1902 may include cell 1 1904, cell 2 1906, cell 3 1908, and cell 4 1910. In some cases, cell set 2 1912 may select cell 1 1904 and cell 3 1908. DCI 2002 may include SRS request fields and SRS offset indicator fields (e.g., SRS resource i 2004, SRS resource j 2006, and SRS resource k 2008, respectively) for cell 1 1904, cell 2 1906, and cell 3 1908. The SRS request field and SRS offset indicator field may indicate the cells for SRS transmission. In such a case, cell 1 1904 and cell 3 1908 may be used for bandwidth aggregation SRS transmission (e.g., due to cell set 2 1912 selecting cell 1 1904 and cell 3 1908) and may meet the requirement (e.g., transmitted from the same antenna), but the SRS resources in cell 2 1906 may not be transmitted from the same antenna as cell 1 1904 or cell 3 1908.

[0122] While various configurations 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 provided to enable those skilled in the art to understand example features and functionality of the present solution. However, such skilled artisans should understand that the solution is not limited to the example architectures or configurations shown, but may be implemented using a variety of alternative architectures and configurations. Furthermore, as will be understood by those skilled in the art, one or more features of some configurations can be combined with one or more features of other configurations described herein. Thus, the breadth and scope of the present disclosure should not be limited by any of the example configurations described above.

[0123] It will also be understood that any reference herein to an element using a designation such as "first," "second," etc., does not generally limit the number 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 and a second element does not imply that only two elements may be used or that the first element must precede the second element in any way.

[0124] 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 referred to in the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0125] Those skilled in the art will further appreciate 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, 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 functions in various ways for each particular application, but such implementation decisions do not cause a departure from the scope of the present disclosure.

[0126] Furthermore, those skilled in the art will understand that the various example logic blocks, modules, devices, components, and circuits described herein may be implemented in 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 an antenna and / or transceiver for communicating 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 combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other suitable configuration for performing the functions described herein.

[0127] If implemented in software, the functions may be stored as one or more instructions or code on a computer-readable medium. Thus, the steps of a method or algorithm disclosed herein may 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 a computer program or code to be transferred from one place to another. A storage medium may be any available medium that can be accessed by a computer. By way of example, and not limitation, such computer-readable media may 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.

[0128] 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 explanation, various modules are described as individual modules, but it will be apparent to one skilled in the art that two or more modules may be combined to form a single module that performs associated functions in accordance with the implementation of the present solution.

[0129] Additionally, memory or other storage and communication components may be used in the implementation of the solution. It will be understood that, for clarity, the above description describes the implementation 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 to suitable means for providing the described functionality.

[0130] Various modifications to the implementations 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 implementations without departing from the scope of this disclosure. Thus, the present disclosure is not intended to be limited to the implementations 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 wireless communication method, the method comprising: receiving, by the wireless communication device, from a first node of the network, a configuration for a downlink reference signal for bandwidth aggregation; receiving, by the wireless communication device, the downlink reference signal from a second node of the network in accordance with the configuration; determining, by the wireless communications device, positioning measurements for the downlink reference signals for the bandwidth aggregation; A method comprising:

2. the downlink reference signal comprises a downlink positioning reference signal (DL-PRS); the first node comprises a Location Management Function (LMF) of the network; The method of claim 1 , wherein the second node comprises a base station of the network.

3. The configuration is higher layer signaling indicating that multiple positioning frequency layers (PFLs) are linked; an indicator indicating whether each of the plurality of PFLs for the downlink reference signal is used for bandwidth aggregation; Equipped with The method of claim 1 , wherein each of the plurality of PFLs comprises at least one set of resources for the downlink reference signal.

4. The configuration is higher layer signaling indicating that multiple positioning frequency layers (PFLs) used for bandwidth aggregation are linked; an indicator indicating a reference PFL for each of the plurality of PFLs for the downlink reference signal; Equipped with The method of claim 1 , wherein each of the plurality of PFLs comprises at least one set of resources for the downlink reference signal.

5. The reference PFL is the reference PFL has the largest bandwidth among the plurality of PFLs; the reference PFL corresponds to a first resource having the highest received power among the resources corresponding to the plurality of PFLs; or the reference PFL corresponds to a second resource having the largest transmission power among the resources corresponding to the plurality of PFLs; The method of claim 4 , wherein the PFL is selected from the plurality of PFLs based on at least one of:

6. A plurality of positioning frequency layers (PFLs) are linked; The method of claim 1 , wherein the configuration comprises an indicator of whether a configuration parameter of the downlink reference signal is enabled.

7. The method of claim 1 , comprising receiving the downlink reference signals according to transmission times indicated in downlink reference signal assistance data.

8. The configuration is first beam information for a first resource of a first resource set of the downlink reference signal for a first positioning frequency layer (PFL); second beam information for a second resource in a second resource set of the downlink reference signal for a second PFL; Equipped with the first beam information is the same as the second beam information; The method of claim 1 , wherein the first PFL and the second PFL are associated with the same transmission / reception point (TRP) and are in the same PFL group.

9. 2. The method of claim 1, wherein the configuration comprises timing error margins for all transmit / receive point (TRP) transmission timing error groups (TEGs) for multiple linked positioning frequency layers (PFLs).

10. The resources for the downlink reference signals aggregated from multiple positioning frequency layers (PFLs) are transmitted by the same transmission / reception point (TRP); The method of claim 1 , wherein two or more resource sets for the downlink reference signal are associated with the TRP.

11. the configuration comprising an indicator indicating whether at least one resource or resource set for a transmission / reception point (TRP) for the downlink reference signal is used for bandwidth aggregation; The method of claim 1 , wherein the indicator is in assistance data specific to the TRP.

12. The configuration is a list of resource sets for the downlink reference signal for a transmission / reception point (TRP), the list of resource sets being used for bandwidth aggregation; or a list of resources for the resource set for downlink reference signaling used for the bandwidth aggregation; The method of claim 1 , comprising at least one of:

13. The configuration is a first indicator indicating whether a resource set for the downlink reference signal is used for bandwidth aggregation, the first indicator being in assistance data for a transmission / reception point (TRP); or a second indicator indicating whether resources for the downlink reference signal are used for the bandwidth aggregation, the second indicator being in the assistance data for the TRP; The method of claim 1 , comprising at least one of:

14. 2. The method of claim 1, wherein the configuration comprises an indicator indicating a reference resource set of a resource set for the downlink reference signal, the indicator being in assistance data for a transmission / reception point (TRP).

15. The configuration comprises a list of positioning frequency layers (PFLs) for the bandwidth aggregation, the PFLs comprising: Subcarrier spacing (SCS), Comsize, Cyclic Prefix (CP), or Support data for each transmitting / receiving point (TRP) The method of claim 1 , wherein the plurality of nodes share at least one of:

16. the configurations comprise a first bandwidth aggregation configuration for bandwidth aggregation of the downlink reference signals and a second bandwidth aggregation configuration for bandwidth aggregation of the downlink reference signals, the first bandwidth aggregation configuration being used for a Radio Resource Control (RRC) connected state of the wireless communication device and the second bandwidth aggregation configuration being used for an RRC inactive state of the wireless communication device; or 2. The method of claim 1, wherein the configuration comprises a bandwidth aggregation configuration for bandwidth aggregation of the downlink reference signals for both the RRC connected state of the wireless communication device and the RRC inactive state of the wireless communication device.

17. The configuration is a bandwidth aggregation configuration for bandwidth aggregation of the downlink reference signals for a Radio Resource Control (RRC) inactive state of the wireless communication device; and a plurality of associated positioning frequency layers (PFLs) associated with the downlink reference signals within an initial downlink bandwidth portion (BWP) for the RRC inactive state of the wireless communication device; The method of claim 1 , comprising:

18. the configuration comprising a plurality of associated positioning frequency layers (PFLs) associated with a reference PFL for the downlink reference signal for a radio resource control (RRC) inactive state of the wireless communication device; a first subcarrier spacing (SCS) of the plurality of associated PFLs and a second SCS of the initial downlink bandwidth portion (BWP) are the same or different; a first cyclic prefix (CP) of the plurality of associated PFLs and a CP SCS of the initial downlink bandwidth portion (BWP) are the same or different; The reference PFL is within an initial downlink BWP, and at least one resource configured in the reference PFL is within the initial downlink BWP; or The reference PFL is outside the downlink BWP, and the at least one resource configured in the reference PFL is outside the initial downlink BWP. The method of claim 1 .

19. the network comprises a Location Management Function (LMF) and a base station; The LMF sends a request for the configuration to the base station, the request comprising a bandwidth aggregation indicator, the indicator comprising: one bit indicating whether bandwidth aggregation for the downlink reference signal is required; or a plurality of bits indicating whether the bandwidth aggregation for the downlink reference signal is required and the number of positioning frequency layers (PFLs) to be used for the bandwidth aggregation; The method of claim 1 , comprising one of:

20. The downlink reference signal is measured within a measurement window, the measurement window comprising: multiplying a first parameter based on at least one of a number of positioning frequency layers (PFLs) or a bandwidth of the downlink reference signals to be aggregated; or adding a second parameter based on at least one of a number of positioning frequency layers (PFLs) or a bandwidth of the downlink reference signals to be aggregated; The method of claim 1 , wherein the determination is based on at least one of:

21. receiving, by the wireless communication device, a measurement request from the network indicating that the wireless communication device is requested to report the positioning measurements for the bandwidth aggregation; reporting, by the wireless communication device, the positioning measurements to the network; Including, The positioning measurement results are a measurement indicator indicating that the positioning measurement result is determined by aggregating resources of the same transmission / reception point (TRP) for the downlink reference signal; a first identifier of a first resource or a first resource set for measuring the downlink reference signal for a measurement element and a second identifier of a second resource or a second resource set for measuring the downlink reference signal; or a list of resource set identifiers or resource identifiers for measuring the downlink reference signal for each TRP for a measurement element; The method of claim 1 , comprising at least one of:

22. receiving, by the wireless communication device, a sounding reference signal (SRS) configuration for the bandwidth aggregation from the second node of the network; transmitting, by the wireless communication device, an SRS to the second node of the network according to the SRS configuration; Including, The SRS configurations for multiple component carriers (CCs) are associated with SRS configurations within an initial uplink bandwidth portion (BWP) or a CC that includes the initial BWP. A priority of transmitting the SRS on an initial CC among the plurality of CCs is higher than a priority of transmitting the SRS on another CC among the plurality of CCs; or The SRS configuration for the plurality of CCs is associated with a reference CC.

10. The method of claim 1, wherein at least one of

23. receiving, by the wireless communication device, from the network in an RRC release message, a sounding reference signal (SRS) configuration for the bandwidth aggregation for a radio resource control (RRC) inactive state; An information element (IE) includes the SRS configuration without changing the RRC inactive and suspend configurations, or The SRS configuration for the bandwidth aggregation is added to the RRC inactive configuration and the suspend configuration. The method of claim 1 .

24. receiving, by the wireless communication device, from the network, a sounding reference signal (SRS) configuration for the bandwidth aggregation; the SRS configuration comprises a list of further serving cells other than an initial component carrier (CC) for the bandwidth aggregation, each of the further serving cells being associated with or comprising one or a list of a bandwidth portion (BWP) configuration and a positioning SRS configuration; Multiple serving cells involved in bandwidth aggregation share the same time alignment timer and received power change threshold; the SRS configuration comprises the SRS location configurations of a plurality of associated BWPs that are received from the network or share a common SRS configuration corresponding to a reference SRS location configuration; The SRS configurations comprise different spatial relationship configurations for different CCs, and the network enables a first spatial relationship of the different spatial relationship configurations and disables a second spatial relationship of the different spatial relationship configurations.

10. The method of claim 1, wherein at least one of

25. receiving, by the wireless communication device, from the network, a Sounding Reference Signal (SRS) activation / deactivation MAC CE for the bandwidth aggregation, the MAC CE comprising: a list of activated serving cell identifiers, the list of activated serving cell identifiers being part of a radio resource control (RRC) configured list of serving cell identifiers; or a list of activated bandwidth portion (BWP) identifiers, the list of activated BWP identifiers being part of an RRC-configured list of BWP identifiers; The method of claim 1 , comprising at least one of:

26. reporting, by the wireless communication device to the network, capabilities of the wireless communication device, the capabilities comprising a duration for the downlink reference signal that the wireless communication device can process over a period for a maximum bandwidth when the wireless communication device is in a Radio Resource Control (RRC) inactive state; the duration of the symbols corresponds to the number of symbols that are less than or equal to a first threshold. The period is greater than or equal to a second threshold.

10. The method of claim 1, wherein at least one of

27. receiving, by the wireless communication device, sidelink control information (SCI) at a physical layer, the SCI comprising a source identifier and a destination identifier, the source identifier being 24 bits and the destination identifier being 24 bits, and the wireless communication device performing pure physical layer filtering using the source identifier and the destination identifier; receiving, by the wireless communication device, a sidelink reference signal from another wireless communication device based on the SCI; The method of claim 1 , comprising:

28. receiving, by the wireless communication device, from the network via radio resource control (RRC) signaling, a plurality of first cells; receiving, by the wireless communication device, from the network via RRC signaling, a plurality of second cells to be used in the bandwidth aggregation for the SRS, wherein the plurality of second cells are selected based on the plurality of first cells; 23. The method of claim 22, comprising:

29. 10. A wireless communication device comprising: at least one processor and a memory, the at least one processor configured to read code from the memory and to perform the method of claim 1.

30. 10. A computer program product comprising computer-readable program medium code stored thereon, said code, when executed by at least one processor, causing said at least one processor to perform the method of claim 1.

31. 1. A wireless communication method, the method comprising: transmitting, by a network to a wireless communication device, a configuration for a downlink reference signal for bandwidth aggregation; transmitting, by the network, the downlink reference signal to the wireless communication device in accordance with the configuration; receiving, by the network, from the wireless communication device, positioning measurements for the downlink reference signal for the bandwidth aggregation; A method comprising:

32. 31. A wireless communication device comprising at least one processor and a memory, the at least one processor configured to read code from the memory and to implement the method of claim 30.

33. 31. A computer program product comprising computer readable program medium code stored thereon, said code, when executed by at least one processor, causing said at least one processor to perform the method of claim 30.

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