Systems and methods for positioning enhancements for wireless devices

Abstract

The present arrangement relates to systems, methods, and non-transitory computer-readable media for receiving a configuration of a downlink reference signal for bandwidth aggregation; receiving a downlink reference signal; and determining a positioning measurement of 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 Art

[0002] In the fifth generation mobile network system (5GC), carrier aggregation is a key technology in the new radio (NR) system. The CA feature may include the aggregation of two or more component carriers. Summary of the Invention

[0003] The example arrangements disclosed herein are intended to solve problems related to one or more problems raised in the prior art, as well as to provide additional features that will become apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings. According to various arrangements, example systems, methods, devices, and computer program products are disclosed herein. However, it should be understood that these arrangements are presented by way of example and not limitation, and it will be apparent to those of ordinary skill in the art reading this disclosure that various modifications may be made to the disclosed arrangements while remaining within the scope of this disclosure.

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

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

[0006] The above and other aspects and implementations thereof are described in more detail in the drawings, the description, and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Various example arrangements of the present solution are described in detail below with reference to the following figures and accompanying drawings. The accompanying drawings are provided for illustrative purposes only and depict only example arrangements of the present solution to facilitate the reader's understanding of the present solution. Therefore, the accompanying drawings should not be construed as limiting the breadth, scope, or applicability of the present solution. It should be noted that for clarity and ease of illustration, the accompanying drawings are not necessarily drawn to scale.

[0008] Figure 1 An example cellular communication system is shown in accordance with some arrangements.

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

[0010] Figure 3 is a diagram illustrating example component carrier aggregation according to various arrangements.

[0011] Figure 4 is a diagram illustrating example wireless communications according to various arrangements.

[0012] Figure 5 is a diagram illustrating example resource mappings according to various arrangements.

[0013] Figure 6 are diagrams illustrating example silence patterns according to various arrangements.

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

[0015] Figure 8 are diagrams illustrating example silence patterns according to various arrangements.

[0016] Figure 9 is a diagram illustrating example bandwidth aggregation according to various arrangements.

[0017] Figure 10 is a diagram illustrating example wireless communications according to various arrangements.

[0018] Figure 11 is a diagram illustrating example wireless communications, according to some arrangements.

[0019] Figure 12 is a diagram illustrating example aggregations according to various arrangements.

[0020] Figure 13 is a diagram illustrating an example Medium Access Control Element (MAC-CE) according to various arrangements.

[0021] Figure 14 is a diagram illustrating an example MAC-CE according to various arrangements.

[0022] Figure 15A and 15B is a diagram illustrating example wireless communications according to various arrangements.

[0023] Figure 16 is a flow chart illustrating an example method for positioning enhancement for a wireless device according to various arrangements.

[0024] Figure 17 is a flow chart illustrating an example method for positioning enhancement for a wireless device according to various arrangements.

[0025] Figure 18 is a diagram illustrating example mappings for positioning enhancement of wireless devices according to various arrangements.

[0026] Figure 19 is a diagram illustrating example mappings for positioning enhancement of wireless devices according to various arrangements.

[0027] Figure 20 is a diagram illustrating example mappings for positioning enhancement of wireless devices according to various arrangements. DETAILED DESCRIPTION

[0028] Various example arrangements of the present solution are described below with reference to the accompanying drawings to enable one of ordinary skill in the art to make and use the present solution. It will be apparent to one of ordinary skill in the art, after reading this disclosure, that various changes or modifications can be made to the examples described herein without departing from the scope of the present solution. Therefore, the present solution is not limited to the example arrangements and applications described and illustrated herein. In addition, the specific order or hierarchy of steps in the methods disclosed herein are merely example methods. Based on design preferences, the specific order or hierarchy of steps of the disclosed methods or processes can be rearranged while remaining within the scope of the present solution. Therefore, one of ordinary skill in the art will understand that the methods and techniques disclosed herein present various steps or actions in an example order, and that the present solution is not limited to the specific order or hierarchy presented, unless otherwise expressly stated.

[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., determining 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 via a UU interface by sending a sounding reference signal (SRS) and / or receiving a positioning reference signal (PRS). In some cases, using a larger bandwidth (e.g., more bandwidth, more frequency resources) may result in higher-precision positioning (e.g., the larger the bandwidth, the higher the positioning accuracy), particularly 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 disclosed herein enhance (e.g., add, update, change) reference signal bandwidth through carrier aggregation technology. To this end, the wireless communication system may use signaling methods and procedures to specify positioning in a CA scenario that takes into account multiple states of the wireless device (e.g., RRC_INACTIVE state and RRC_CONNECTED state).

[0030] Figure 1An example wireless communication system 100 is shown in which the techniques disclosed herein may be implemented according to implementations of the present disclosure. In the following discussion, 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 an example system 100 includes a BS 102 and a UE 104, which may communicate with each other via a communication link 110 (e.g., a wireless communication channel) and a cluster of cells 126, 130, 132, 134, 136, 138, and 140 covering a geographic area 101. Figure 1 1 , BS 102 and UE 104 are contained within the respective geographic boundaries of cell 126. Each of the other cells 130, 132, 134, 136, 138, and 140 may include at least one BS operating on its allocated bandwidth to provide adequate radio coverage to its intended users.

[0031] For example, BS 102 may operate under an allocated channel transmission bandwidth to provide sufficient coverage to UE 104. BS 102 and UE 104 may communicate via downlink radio frames 118 and uplink radio frames 124, respectively. Each radio frame 118 / 124 may also be divided into subframes 120 / 127, which may include data symbols 122 / 128. In the present disclosure, BS 102 and UE 104 are described herein as non-limiting examples of "communication nodes," which, in general, may practice the methods disclosed herein. Depending on various implementations of the present solution, such communication nodes may be capable of wireless and / or wired communication.

[0032] In some implementations, the wireless communication system 100 may support carrier aggregation (CA). For example, CA is a key technology for expanding wireless communication bandwidth. For high-precision positioning, especially when timing-based positioning methods (e.g., TDOA, RTT) are used, the larger the bandwidth, the higher the positioning accuracy. The techniques described herein may provide enhancements to various aspects of the reference signal positioning process. For example, a wireless communication device may receive a configuration of a downlink reference signal for bandwidth aggregation from a first node of a network by the wireless communication device. The wireless communication device may receive a downlink reference signal from a second node of the network (e.g., a base station, gNB, NG radio access network (NG-RAN)) according to the configuration. The wireless communication device may determine positioning measurement results 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] Figure 2A block diagram of an example 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) according to some implementations of the present solution is shown. The system 200 may include components and elements configured to support known or conventional operating features that need not be described in detail herein. In one illustrative implementation, the system 200 may be used to communicate with a wireless communication environment (e.g., Figure 1 The wireless communication environment 100 of FIG. 1 may be used to transmit (eg, send and receive) data symbols, as described above.

[0034] System 200 generally includes a BS 202 and a UE 204. 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 coupled and interconnected as needed via a data communication bus 220. UE 204 includes a UE transceiver module 230, a UE antenna 232, a UE memory module 234, and a UE processor module 236, each coupled and interconnected as needed via a data communication bus 240. BS 202 communicates with UE 204 via a communication channel 250, which can be any wireless channel or other medium suitable for the transmission of data as described herein.

[0035] System 200 may also include Figure 2 Any number of modules outside the modules shown. It will be understood by those skilled in the art that the various illustrative blocks, modules, circuits, and processing logic described in connection with the implementation disclosed herein can be implemented in hardware, computer-readable software, firmware, or any actual combination thereof. In order to clearly illustrate this interchangeability and compatibility of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps are generally described in terms of their functionality. Whether these functions are implemented as hardware, firmware, or software may depend on the specific application and the design constraints imposed on the entire system. Personnel familiar with the concepts described herein can implement these functions in an appropriate manner for each specific application, but these implementation decisions should not be interpreted as limiting the scope of this disclosure.

[0036] According to some implementations, the UE transceiver 230 may be referred to herein as an uplink transceiver 230 and includes a radio frequency (RF) transmitter and an RF receiver, each of which includes circuitry coupled to an antenna 232. A duplex switch (not shown) may alternately 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 and includes an RF transmitter and an RF receiver, each of which includes circuitry coupled to an antenna 212. A downlink duplex switch may alternately couple the downlink transmitter or receiver to the downlink antenna 212 in a time-duplexed manner. The operations of the two transceiver modules 210 and 230 may be coordinated in time such that the uplink receiver circuitry is coupled to the uplink antenna 232 for reception of transmissions over the wireless transmission link 250 while the downlink transmitter is coupled to the downlink antenna 212. In some implementations, there is tight time synchronization with minimal guard time between changes in duplex direction.

[0037] The UE transceiver 230 and the BS transceiver 210 are configured to communicate via a wireless data communication link 250 and cooperate with an appropriately configured RF antenna arrangement 212 / 232 that can support a specific wireless communication protocol and modulation scheme. In some illustrative 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 should be understood that the present disclosure is not necessarily limited to application to specific standards and related protocols. Instead, the UE transceiver 230 and the BS transceiver 210 can be configured to support alternative or additional wireless data communication protocols, including future standards or variants thereof.

[0038] According to various implementations, for example, BS202 can be an evolved node B (eNB), a serving eNB, a target eNB, a femto station or a micro station. In some implementations, UE 204 can be various types of user equipment, such as mobile phones, smart phones, personal digital assistants (PDAs), tablet computers, laptop computers, wearable computing devices, etc. Processor modules 214 and 236 can be implemented with 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 to be designed to perform the functions described herein. In this way, the processor can be implemented as a microprocessor, a controller, a microcontroller, a state machine, etc. The processor can also be implemented as a combination of computing devices, such as a combination of a digital signal processor and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors and a digital signal processor core, or any other such configuration.

[0039] Furthermore, the methods described in connection with the implementations disclosed herein can be implemented directly in hardware, firmware, or software modules executed by the processor modules 214 and 236, respectively, or in any practical combination thereof. The memory modules 216 and 234 can be implemented as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. In this regard, the memory modules 216 and 234 can be coupled to the processor modules 210 and 230, respectively, so that the processor modules 210 and 230 can read information from and write information to the memory modules 216 and 234, respectively. The memory modules 216 and 234 can also be integrated into their respective processor modules 210 and 230. In some implementations, the memory modules 216 and 234 can each include cache memory for storing temporary variables or other intermediate information during the execution of instructions to be executed by the processor modules 210 and 230, respectively. Memory modules 216 and 234 may also each include non-volatile memory for storing instructions to be executed by processor modules 210 and 230, respectively.

[0040] The network communication module 218 generally represents the hardware, software, firmware, processing logic and / or other components of the BS 202 that enable two-way communication between the BS transceiver 210 and other network components and communication nodes configured to communicate with the BS 202. For example, the network communication module 218 can be configured to support Internet or WiMAX traffic. In a typical deployment, but not limited to, the network communication module 218 provides an 802.3 Ethernet interface so that the BS transceiver 210 can communicate with a traditional Ethernet-based computer network. In this way, the network communication module 218 can include a physical interface for connecting to a computer network (e.g., a mobile switching center (MSC)). As used herein with respect to a specific operation or function, the terms "configured for," "configured to," and variations thereof refer to a device, component, circuit, structure, machine, signal, etc. that is physically constructed, programmed, formatted, and / or arranged to perform a specified operation or function.

[0041] Figure 3 3 is a diagram illustrating an example aggregation 300 according to various arrangements. Aggregation 300 may be an intra-band contiguous carrier aggregation. For example, component carrier (CC) 302 may be aggregated with CC 304 (e.g., CC carrier aggregation 308), where the aggregation of CC 302 and CC 306 may be an example of intra-band non-contiguous carrier aggregation. In some cases, frequency resources 310 may be an active bandwidth part (BWP).

[0042] In some examples, from a downlink perspective, subject 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, subject to the UE capabilities, a UE in RRC_INACTIVE state can be configured with SRS resources for positioning associated with the initial uplink BWP 310, and the SRS resources are sent within the initial uplink BWP with the same cyclic prefix (CP) and subcarrier spacing (SCS) as configured for the initial uplink BWP. Subject to the UE capabilities, the UE can be configured with SRS resources for positioning outside the initial BWP 310, including frequency location and bandwidth, subcarrier spacing, and CP length, for transmission of SRS in RRC_INACTIVE mode. The SRS resources used for positioning outside the initial BWP 310 in RRC_INACTIVE mode can be configured in the same frequency band and CC as the initial uplink BWP 310 (e.g., pre-configured, configured via a configuration message sent by the network, etc.). In some wireless communication systems, the signaling and procedures for positioning in a single carrier (e.g., 100 MHz in frequency range (FR) and 400 MHz in FR2) can be specified, however, bandwidth aggregation technology can further improve positioning accuracy (e.g., to meet the demand for higher accuracy in wireless communication).

[0043] Figure 4 4 is a diagram illustrating an example wireless communication 400 according to various arrangements. The wireless communication 400 may include a network 402 (e.g., a base station, gNB, NG-RAN, access and mobility management function (AMF), 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., LMF) and a second node of the network 402 (e.g., a base station, gNB, NG-RAN, etc.).

[0044] For example, wireless communication 400 may include network 402 sending downlink PRS (DL-PRS) 406 to UE 404 and UE 404 sending SRS positioning (SRS-pos) 408 to network 402. For example, in response to UE 404 receiving DL-PRS 406, UE 404 may measure and process resources of DL-PRS 406. The corresponding signaling may include PRS configuration for positioning in a carrier aggregation scenario, measurement reports, measurement period requirements, or any combination thereof. Subject to UE capabilities, UE 404 may send SRS 408 for positioning configuration and according to SP SRS media access control element (MAC-CE) design (e.g., for sidelink physical layer filtering).

[0045] In some examples, expanding the bandwidth of positioning reference signals (e.g., PRS, SRS-pos) through carrier aggregation techniques can result in higher positioning accuracy. For positioning in the RRC_INACTIVE state, as described herein, positioning assistance data or PRS configuration 405 can be delivered to the UE 404 in various ways. In a first example, the method can include positioning system information (e.g., a system information block (posSIB) for positioning). In a second example, the method can include pre-configuring assistance data when the UE 404 is in the RRC_CONNECTED state. In a third example, the method can include the network 402 transmitting to the UE 404 in the RRC_INACTIVE state during an ongoing small data transfer (SDT) process. In addition, or alternatively, the SRS used for positioning in the RRC_INACTIVE state can be configured via RRCRelease with SuspendConfig or an SDT downlink (DL) radio resource control (RRC) message (e.g., Msg B / Msg 4 of random access (RA)-SDT). In some cases, a CC may also be a serving cell or positioning frequency layer (PFL) to be aggregated in a CA scenario.

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

[0047] In a first example method, the UE 404 may receive a configuration from the network 402, wherein 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, wherein each of the multiple PFLs includes a set of at least one resource for downlink reference signals. For example, multiple PFLs for bandwidth aggregation may be associated and / or linked via higher layer signaling (e.g., LPP signaling). The network 402 (e.g., LMF) may explicitly inform 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, indicating whether a particular PFL is used for bandwidth aggregation (e.g., a Boolean value). For example, the reference Figure 5 , UE 404 may be configured with three DL-PRSPFLs 406 (e.g., PFL1 502, PFL2 504, and PFL3 506). Network 402 (e.g., LMF) may indicate via LPP signaling that PFL1 502 and PFL3 506 are associated and used for bandwidth aggregation, while PFL 2 504 is not used for bandwidth aggregation. Figure 5 is a diagram illustrating an example resource mapping 500 according to various arrangements. Mapping 500 may summarize the PFL resource mapping order in time and frequency (eg, DL-PRS resources in multiple PFLs transmitted simultaneously).

[0048] In a second example method, 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 the multiple PFLs for downlink reference signals, each of which includes a set of at least one resource for downlink reference signals. For example, the 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 each PFL, indicating a reference PFL for the PFL. In some cases, if a PFL is not configured with a reference PFL ID, the PFL is not used for bandwidth aggregation. If a PFL is configured with a reference PFL ID, the PFL is configured for bandwidth aggregation, and the DL-PRS configured within the PFL is associated with or references the DL-PRS configured within the reference PFL. In some examples, the reference PFL may be the PFL itself.

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

[0050] In some cases, a reference PFL is selected from multiple PFLs based on one or more rules. These rules may include: the reference PFL has the largest bandwidth among the multiple PFLs; the reference PFL corresponds to the first resource with the largest received power among the resources corresponding to the multiple PFLs; or the reference PFL corresponds to the 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 be applied (e.g., DL-PRS configuration for multiple PFLs or multiple DL-PRS resource sets to be aggregated). The common parameters may reference the reference PFL, the reference DL-PRS resource set, or 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 used as 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, transmission-reception point (TRP) identification (ID), antenna reference point (ARP), DL-PRS period, number of DL-PRS resource sets, number of PRS resources in linked PRS resource sets, DL-PRS resource set slot offset, DL-PRS resource repetition factor, time gap, silence pattern, number of DL-PRS symbols, DL-PRS resource slot offset, DL-PRS resource symbol offset, DL-PRS comb size and RE offset, DL-PRS sequence ID, priority of DL-PRS, DL-PRS QCL information, power used for DL-PRS transmission, DL-PRS expected reference signal timing difference (RSTD), and expected RSTD uncertainty.

[0052] Figure 6 is a diagram illustrating an example silence pattern 600 according to various arrangements. The silence pattern 600 may include two associated PFLs (PFL1 606 and PFL2 608) having different silence patterns 604 (including a resource 602).

[0053] References Figure 4 and 5In the first and second examples described, if 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, if multiple PFLs are linked, the configuration (e.g., DL-PRS configuration) may include an indicator indicating whether the configuration parameters of the downlink reference signal are enabled. This indicator may be an enable / disable indicator (e.g., introduced via network 402) to specify whether one or some of the DL-PRS configuration parameters are enabled or disabled.

[0054] In some cases, a wireless device (e.g., UE 404) may receive a downlink reference signal according to the transmission time indicated in the downlink reference signal assistance data. For example, if the DL-PRS configuration under each PFL is independent but no enable / disable indicator is introduced, the UE 404 may receive the DL-PRS based on the common transmission time according to the DL-PRS assistance data. The network 402 may select a common transmission time instance to transmit the DL-PRS. For example, if the muting patterns for the two associated PFLs 606 and 608 are different, a null instance may indicate that the DL-PRS in that instance is muted. The UE 404 may determine the muting time instance associated with the two PFLs 606 and 608 and measure and process the DL-PRS (e.g., measured PRS 610) transmitted simultaneously 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, which 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 in a first resource set for a downlink reference signal for a first PFL; second beam information for a second resource in a second resource set for a downlink reference signal for a second PFL; the first beam information is the same as the second beam information; and the first PFL and the second PFL are associated with the same TRP and in the same PFL group. In addition, or alternatively, the configuration may include a timing error margin 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 for DL-PRS resources). In some cases, the DL-PRS beam information for DL-PRS resource i in DL-PRS resource set j in PFL 1 is the same as the DL-PRS beam information for DL-PRS resource i in DL-PRS resource set j in PFL 2, 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 within an initial DL BWP.

[0056] The second parameter may be NR-DL-PRS-TRP-TEG-Info (e.g., used by a location server to provide information on the association of DL-PRS resources with TRP Tx timing error groups (TEGs)). In some cases, for DL-PRS resources associated with a PFL group, a new IE may be introduced to indicate the timing error margin for all TRP Tx TEGs contained in one NR-DL-PRS-TRP-TEG-InfoPerFreqLayerGroup (e.g., the TRP Tx TEG ID associated with the transmission of each DL-PRS resource of the PFL group) or the TRP Tx TEG ID associated with a reference PFL or a PFL within the initial DL BWP. In some cases, the DL-PRS TRP Tx TEG ID in PFL 1 is the same as the DL-PRS TRP Tx TEG ID in PFL 2, where PFL 1 and PFL 2 are associated with the same TRP and the same PFL group, or are associated with a reference PFL or a PFL within the initial DL BWP.

[0057] The third parameter may be NR-RTD-Info (e.g., used by a location server to provide time synchronization information between a reference TRP and a neighbor TRP list). In some cases, RTD-InfoListPerFreqLayer may be associated with RTD-InfoListPerFreqLayerGroup, or with a reference PFL or a PFL within the initial DL BWP. In some cases, the DL-PRS TRP RTD information in PFL 1 is the same as the DL-PRS TRP RTD information in PFL 2, where PFL 1 and PFL 2 are associated with the same TRP and the same PFL group, or with a reference PFL or a PFL within the 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 TRP set. For each TRP, an ARP location may be provided for each associated PRS resource ID per PRS resource set). In some cases, NR-TRP-LocationInfoPerFreqLayer may be associated with NR-TRP-LocationInfoPerFreqLayerGroup, or associated with a reference PFL or a PFL within an initial DL BWP. In some cases, the DL-PRS TRP and ARP location information in PFL 1 is the same as the DL-PRS TRP and ARP location information in PFL 2, where PFL 1 and PFL 2 are associated with the same TRP and the same PFL group, or are associated with a reference PFL or a PFL within an initial DL BWP.

[0059] The fifth parameter may be NR-TRP-BeamAntennaInfo (e.g., used by the location server to provide beam antenna information for a TRP). In some cases, NR-TRP-BeamAntennaInfoPerFreqLayer may be associated with NR-TRP-BeamAntennaInfoPerFreqLayerGroup, or with a reference PFL or a PFL within an initial DL BWP. In some cases, the DL-PRS beam antenna information in PFL 1 is the same as the DL-PRS beam antenna information in PFL 2, where PFL1 and PFL2 are associated with the same TRP and the same PFL group, or with a reference PFL or a PFL within an initial DL BWP. In some cases, to maximize the performance gain of bandwidth aggregation, it is desirable that the DL-PRS resources of multiple aggregated PFLs be transmitted by the same TRP via the same antenna panel, aiming at the same spatial direction (e.g., to ensure performance and positioning accuracy).

[0060] Figure 7 FIG7 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., higher layer links of PRS resource sets per TRP).

[0061] In some cases, resources for downlink reference signals aggregated from multiple PFLs are transmitted by the same TRP, where two or more resource sets for downlink reference signals are associated with the TRP. For example, a DL-PRS resource set ID can be used to identify the DL-PRS resource set of a TRP on all frequency layers. In some cases, if DL-PRS resources 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. A UE can be configured with a maximum of two DL-PRS resource sets per TRP and per PFL. By restricting the DL-PRS resources aggregated from multiple PFLs to be transmitted by the same TRP and configuring one TRP to be associated with more than two DL-PRS resource sets, DL-PRS resources associated with at least two PFLs are aggregated.

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

[0063] In some cases, an indicator specifying whether a DL-PRS resource or a DL-PRS resource set within a TRP is intended for bandwidth aggregation may also be designed within the per-TRP assistance data or the per-TRP PRS configuration. In a first example, the configuration may include an indicator indicating whether at least one resource or resource set of a TRP for downlink reference signals is used for bandwidth aggregation, where the indicator is TRP-specific assistance data. For example, assistance data for a TRP (e.g., NR-DL-PRS-AssistanceDataPer TRP in LPP) may include an indicator (e.g., Bandwidth-aggregation-ind) that specifies whether DL-PRS resources configured in the TRP that are used for bandwidth aggregation may 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 being used for bandwidth aggregation; or a list of resource sets for downlink reference signaling used for bandwidth aggregation. For example, the assistance data per TRP may include a PRS configuration (e.g., NR-DL-PRS-Info), the PRS configuration including a DL-PRS resource set and a DL-PRS resource configuration. The assistance data may include a parameter (e.g., nr-DL-PRS-ResourceSetList-CA in NR-DL-PRS-Info, where the maximum number of resource sets for bandwidth aggregation may be set to 6) that specifies a DL-PRS resource set list 732 for one TRP used for bandwidth aggregation. In some cases, the DL-PRS resource set lists used for bandwidth aggregation may be linked (e.g., associated with each other). Additionally or alternatively, the assistance data may include a parameter that specifies a DL-PRS resource list for one resource set used for bandwidth aggregation (e.g., dl-PRS-ResourceList-CA in NR-DL-PRS-ResourceSet).

[0065] In a third example, the configuration may include a first indicator indicating whether a resource set for a downlink reference signal is used for bandwidth aggregation, the first indicator being in the assistance data for the TRP, or a second indicator indicating whether a resource set for a downlink reference signal is used for bandwidth aggregation, the second indicator being 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 for a downlink reference signal in the assistance data for the TRP. For example, the assistance data per TRP may include an indicator for a DL-PRS resource set (e.g., Reference-DL-PRS-ResourceSetID), which indicates 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 a 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 a reference DL-PRS resource set ID, the DL-PRS resource set 724 is configured for bandwidth aggregation, and the DL-PRS resources configured within the DL-PRS resource set 724 are associated with the DL-PRS resources configured within 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] Figure 8 800 is a diagram illustrating an example muting pattern 800 according to various arrangements. The muting pattern 800 may include a first resource set 806 and a second resource set 808 associated with the first resource set 806 and having a different pattern 804. The UE may measure PRS 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 configuration under each DL-PRS resource set 806 and 808 is independent, regardless of which example (e.g., reference 1 herein) is used. Figure 7 The described examples 1 to 4) are applied.

[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 period, number of DL-PRS symbols, 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, DL-PRS transmission power, DL-PRS expected RSTD, and expected RSTD uncertainty) are enabled / disabled. If the DL-PRS configuration under each DL-PRS resource set is independent but the enable / disable indicator is not introduced, the UE may receive DL-PRS based on a common transmission time according to DL-PRS assistance data. In some cases, the network may select a common transmission time instance to send DL-PRS. For example, if the muting patterns 804 for the two associated DL-PRS resource sets 806 and 808 are different, then a null instance may indicate that the DL-PRS in that instance is muted. The UE may measure and process the DL-PRS 810 during 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] Figure 9 9 is a diagram illustrating an example aggregation 900 according to various arrangements. 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. Aggregation 900 may include PFL1 902, PFL2 904, and PFL3 906, where PFL2 904 may include an initial downlink BWP 908. In some examples, aggregation 900 may support PRS assistance data / configuration (e.g., information element (IE) for CA) for downlink bandwidth aggregation.

[0070] In some cases, to support downlink bandwidth aggregation, a new field or new IE may be introduced. A new field (e.g., NR-DL-PRS-PositioningFrequencyLayer-CA) may be used for a frequency layer list for CA. Multiple PFLs within the field / IE may share at least one of various parameters. For example, the configuration for the downlink reference signal may include a PFL list for bandwidth aggregation, where the PFLs share at least one of SCS, comb size, CP, or auxiliary data per TRP. In some cases, each PFL (e.g., NR-DL-PRS-PositioningFrequencyLayer-CC) may have a corresponding resource bandwidth, starting PRB, and point A. The assistance data per TRP may include at least one or more of the following: TRPID (e.g., dl-PRS-ID), physical cell identity, NR cell global identifier (NCGI) (e.g., a globally unique identifier of a cell in NR), absolute radio frequency channel number (ARFCN) associated with the cell definition synchronization signal block (CD-SSB) of the TRP, SFN0 offset, ARP, DL-PRS period, 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, DL-PRS QCL information, DL-PRS transmit power, DL-PRS expected RSTD, and expected RSTD uncertainty.

[0071] In some examples, to support positioning bandwidth aggregation for UEs in the RRC_INACTIVE state, there may be multiple embodiments for configuring DL-PRS bandwidth aggregation. In a first embodiment, the configuration for the downlink reference signal may include a first bandwidth aggregation configuration for bandwidth aggregation of the downlink reference signal or a second bandwidth aggregation configuration for bandwidth aggregation of the downlink reference signal, the first bandwidth aggregation configuration being used in the RRC connected state of the wireless communication device, and the second bandwidth aggregation configuration being used in the RRC inactive state of the wireless communication device; or a bandwidth aggregation configuration for bandwidth aggregation of the downlink reference signal in both the RRC connected state and the RRC inactive state of the wireless communication device. For example, the corresponding 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 configuration for downlink reference signals may include a bandwidth aggregation configuration, bandwidth aggregation of downlink reference signals for a wireless communication device in an RRC_inactive state, and multiple associated PFLs associated with the downlink reference signals within an initial downlink BWP for the wireless communication device in an RRC_inactive state. For example, when a DL-PRS bandwidth aggregation configuration is introduced specifically for a UE in an RRC_INACTIVE state, multiple associated PFLs (e.g., PFL1 902, PFL2 904, and PFL3 906) are configured to be associated with PRSs within an initial downlink BWP 908 for the UE in the RRC_INACTIVE state. In some cases, only PFLs with SCSs and CPs for the same PRS resources as 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 SCS and CP.

[0073] In a third embodiment, the configuration for downlink reference signals may include multiple PFLs associated with a reference PFL for downlink reference signals in an RRC_INACTIVE state for a wireless communication device. In some cases, the first SCS of the multiple associated PFLs, the second SCS of the initial downlink BWP, and the first CP of the multiple associated PFLs are the same or different from the CP SCS of the initial downlink BWP. 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 may be outside the downlink BWP and at least one resource configured in the reference PFL is outside the initial downlink BWP. For example, if the 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 within the initial downlink BWP 908 (e.g., the DL-PRS resources configured in the reference PFL are within the initial downlink BWP 908) or outside the initial downlink BWP. In this case, 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] Figure 101 is a diagram illustrating an example wireless communication 1000 according to various arrangements. Wireless communication 1000 may include UE 1002, LMF 1004, and NG-RAN node 1006. In some cases, LMF 1004 may be a first node of a network (e.g., a network node), and node 1006 may be a second node of the network (e.g., a network node). Wireless communication 1000 may support a signaling procedure for PRS assistance data. In some examples, the signaling presented in wireless communication 1000 may represent signaling between LMF 1004 and NG-RAN node 1006, as well as request signaling sent from UE 1002 to LMF 1004.

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

[0076] Node 1006 may send a response with the PRS configuration to LMF 1004. For example, the response may be PRS Configuration Response / Failure 1010. Response 1010 may include information listed in the IE containing 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; parameters specifying a list of DL-PRS resource sets for a TRP used for bandwidth aggregation; parameters specifying a list of DL-PRS resources for a resource set used for bandwidth aggregation; an indicator for each DL-PRS resource set specifying whether the corresponding DL-PRS resource set is used for bandwidth aggregation; an indicator for each DL-PRS resource specifying whether the corresponding DL-PRS resource is used for bandwidth aggregation; an indicator for a 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] UE 1002 may send a request 1012 for DL-PRS assistance data to LMF 1004. Request 1012 may include information listed in an IE, including a requested PRS configuration for transmission by UE 1002. This 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., UE 1002 may request a large bandwidth for a DL-PRS resource set); an indicator requesting a reference PFL ID; and / or an indicator requesting a PFL group. In response to receiving request 1012, LMF 1004 may send DL-PRS assistance data to UE 1002 via signaling 1014.

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

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

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

[0081] In some examples, the request 1106 may include information listed in an IE that includes 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 aggregate measurements; a measurement request for a certain 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 per TRP or per TRP pair; and / or a maximum number of aggregated DL-PRS resource sets per TRP or per TRP pair indicating the maximum number of aggregated DL-PRS resource sets that the target device is requested to measure and report per TRP or per TRP pair. 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 that includes positioning measurements for transmission by the UE 1102. The information may include a DL-PRS CA measurement indicator (e.g., nr-DL-PRS-CA-ind) that indicates whether the measurement element provided by the UE 1102 is derived from aggregated DL-PRS resources from a TRP (e.g., dl-PRS-ID); one or more additional DL-PRS resource set IDs for each positioning measurement provided by the UE 1102 per TRP, where 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, where 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 DL-PRS resource IDs (e.g., nr-DL-PRS-ResourceID-list); whether / which one, two, or three PFLs are used for measurement and reporting. In some cases, for additional DL-PRS resource set IDs, for CA scenarios, UE 1102 may need to provide more DL-PRS resource sets and DL-PRS resource ID information for one measurement. For example, for each DL-TDOA measurement report element (e.g., NR-DL-TDOA-MeasElement), UE 1102 may provide a DL-PRS resource set ID (e.g., nr-DL-PRS-additional-ResourceSetID or nr-DL-PRS-additional-ResourceSetID-list) to which additional DL-PRS resource set IDs are attached, and a DL-PRS resource ID (e.g., nr-DL-PRS-additional-ResourceID or nr-DL-PRS-additional-ResourceID-list) to which additional DL-PRS resource IDs are attached.

[0083] Figure 12 12 is a diagram illustrating an example aggregation 1200 according to various arrangements. Aggregation 1200 may include a first CC 1202, a second CC 1204, and a third CC 1206. Aggregation 1200 may be an example of a three-CC carrier aggregation, where CC 1202, CC 1204, and CC 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 can 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 frequency band and CC as the initial uplink BWP 1210 (e.g., CC 1204). However, the available bandwidth for SRS transmission by UEs in the RRC_INACTIVE state is quite limited. For UEs in RRC_CONNECTED mode or RRC_INACTIVE mode, at least one of the following SRS types (periodic, semi-persistent, aperiodic) can be supported for bandwidth aggregation positioning.

[0085] Simultaneously transmitting SRS for positioning purposes across multiple CCs can significantly expand the bandwidth of the SRS resource, thereby increasing positioning accuracy. For a UE in the RRC_INACTIVE state, the initial uplink BWP is configured in CC 1204. Based on UE capabilities, the UE can be configured to transmit SRS in CC 1202, CC 1204, and / or CC 1206. In some cases, CC aggregation 1208 can be multiple associated SRSs.

[0086] In some cases, an SRS signaling process 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 send an SRS to the base station based on the SRS configuration. In a first example, the SRS configuration for multiple CCs may be associated with the SRS configuration within an initial uplink BWP (e.g., BWP 1210), or associated with a CC that includes the initial BWP (e.g., CC 1204). In a second example, sending an SRS on an initial CC of the multiple CCs has a higher priority than sending an SRS on another CC in the multiple CCs. In a third example, the SRS configuration for multiple CCs is associated with a reference CC. In some implementations, the UE may receive multiple first cells via RRC signaling and multiple second cells via RRC signaling for bandwidth aggregation of the SRS, where the multiple second cells are selected based on the multiple first cells. In some cases, a wireless communication system may use one or all of these examples.

[0087] In a first example, for a CC group, the SRS configuration in multiple CCs is associated with the SRS configuration in CC 1204 within or including initial uplink BWP 1210. In some cases, based on UE capabilities, SRS resources may be configured both within and outside initial uplink BWP 1210. In some examples, if the UE supports uplink positioning bandwidth aggregation, sending SRS on the initial CC takes precedence over sending SRS on other CCs. For example, if the UE sends SRS on only one CC, the default configuration is to send SRS on CC 1204. If SRS is sent on two CCs, the default configuration is to send SRS on CC 1204 and CC 1202, or CC 1204 and CC 1206. If SRS is sent on three CCs, the default configuration is to send SRS on CC 1204, CC 1202, and CC 1206. In the second example, the configuration of SRSs in multiple CCs is associated with a reference CC. In the third example, the reference CC can be inside or outside the initial uplink BWP 1210. In the 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 the fifth example, based on UE capabilities, SRS resources can be configured for UEs outside the initial uplink BWP 1210, with the configuration including frequency domain location and bandwidth, SCS, and CP. In some cases, two or more examples can be combined.

[0088] In some examples, the SRS configuration for bandwidth aggregation can be used for the RRC inactive state in the RRC release message. In some cases, one of the IEs can contain the SRS configuration without changing the RRC inactive configuration and suspension configuration, or the SRS configuration for bandwidth aggregation is added to the RRC inactive configuration and suspension configuration. In some cases, to support SRS carrier aggregation, additional SRS configurations in serving cells other than the one serving cell of the initial BWP should be introduced and notified through RRC release signaling. For example, the configuration can be configured according to the first method in the RRC version, including adding a new IE (e.g., SRS-PosRRC-InactiveCAConfig), including SRS CA related configuration for UEs in RRC_INAC TIVE state without changing the SRS-PosRRC-InactiveConfig in SuspendConfig, or configured according to the second method, including updating the SRS-PosRRC-InactiveConfig in SuspendConfig by adding SRS CA related configuration for UEs in RRC_INACTIVE state (e.g., additional-ServingCell-list, additional-ServingCell, each additional-ServingCell l including at least one of the following: serving cell ID, srs-PosConfigNUL, bwp-NUL-r17, inactivePosSRS-TimeAlignmentTimer, inactivePosSRS-RSRP-ChangeThr eshold, 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 the additional serving cells being associated with or including a BWP configuration and a positioning SRS configuration, or a list of BWP configurations and positioning SRS configurations. Multiple serving cells participating in bandwidth aggregation share the same time alignment timer and received power (e.g., RSRP) variation threshold. The SRS configuration includes SRS position configurations for multiple associated BWPs, the multiple associated BWPs sharing a common SRS configuration received from the network or corresponding to a reference SRS positioning configuration. A common SRS configuration may include one or more of an SRS resource set ID, an SRS resource set ID list, an SRS resource ID, an SRS resource ID list, a resource type (a-periodic, semi-persistent, periodic), an alpha value for SRS power control, a p0 value for SRS power control, a path loss reference RS (SSB, DL-PRS), the number of SRS ports, a transmission comb size, a comb offset, a cyclic shift, a resource mapping (starting position, number of symbols), a frequency domain shift, a frequency hopping, a group or sequence hopping, a sequence ID, and / or spatial relationship information (serving cell RS, SSB, DL-PRS). To maximize performance gains, SRS resources on multiple aggregated CCs may be transmitted based on 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 to SRS resource set m in carrier i+1), and / or the number of SRS resources used for positioning (e.g., SRS resources in linked SRS resource sets in linked carriers may be linked one-to-one by default, where the nth SRS resource in SRS resource set m in carrier i is linked to the nth SRS resource in SRS resource set m in carrier i+1). The SRS configuration includes different spatial relationship configurations for different CCs (e.g., SSBs in CC 1202 and DL-PRS in CC 1204), where 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] SRS CA-related configurations may also include one of the following: The SRS configuration may include a list of serving cells, with the SRS resources configured within the list of serving cells associated and participating in carrier aggregation. Each serving cell is associated with or includes one of the BWP configurations or SRS-pos configurations in the list. The SRS configuration may include a list of BWPs participating in carrier aggregation, with each BWP configuration associated with the list of SRS-pos configurations. For the list of BWPs to be aggregated (e.g., a BWP may be configured for each serving cell), the BWPs may 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, in which case the SRS-pos configurations of other serving cells / BWPs may be associated with the SRS-pos configuration of the reference cell / BWP (e.g., the reference SRS-pos configuration). Each serving cell involved in bandwidth aggregation may be independently configured with a time alignment timer and RSRP variation threshold.

[0091] Figure 13 1 is a diagram illustrating an example MAC-CE 1300 according to various arrangements. 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 ID i in one serving cell and resource ID i in another serving cell. MAC-CE 1300 may be an SP-positioning SRS activation / deactivation MAC-CE.

[0092] For periodic SRS used for positioning, RRC-configured linking between carriers may be sufficient. After RRC configuration, SRS in different linked carriers are periodically transmitted in the same symbols. TRP can then perform SRS measurements and reporting based on the aggregated SRS transmissions. 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. MAC-CE 1300 may include at least one of the following: a list of activated serving cell identifiers, a list of activated serving cell identifiers that is a subset of the RRC-configured list of serving cell identifiers; or a list of activated BWP identifiers, a list of activated BWP identifiers that is a subset of the RRC-configured list of BWP identifiers. In some cases, this can provide flexibility to select some or all serving cells / BWPs to activate or deactivate. 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 resource sets for the BWP and serving cell. For semi-persistent SRS activation / deactivation, one or more of the following options may apply. A first option may include that, when carrier i is linked with carrier j via RRC signaling for positioning SRS BW aggregation, a MAC CE that activates / deactivates the SRS resource set with ID m in carrier i may activate / deactivate the SRS resource set with ID m in carrier j. A second option may include that, when carrier i is linked with carrier j via RRC signaling for positioning SRS BW aggregation, a MAC CE that activates / deactivates the SRS resource set with ID m in carrier i may activate / deactivate the SRS resource set with ID m in carrier i, or activate / deactivate the SRS resource set with ID m in both carrier i and carrier j.

[0093] In some cases, the MAC-CE may schedule SRS resources or SRS resource sets from multiple CCs, where the SRS resources are transmitted simultaneously in the multiple CCs. The MAC-CE 1300 may activate the SRS resources or SRS resource sets of a reference CC or a CC including an initial uplink BWP, and the association between the reference CC and other corresponding CCs may be configured via higher layer signaling, indicating that once the reference CC is activated / deactivated, the corresponding CCs are also activated / deactivated simultaneously. 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 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 a reference serving cell and / or BWP.

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

[0095] In some examples, the spatial relationship information corresponding to resource ID i in one serving cell and resource ID j in another serving cell may be the same, where the two SRS resources are associated and expected to be transmitted simultaneously. For example, MAC-CE 1300 may indicate 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 are transmitted simultaneously.

[0096] In some cases, 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 the indicated SP-positioned SRS resource set is activated or deactivated. Setting the field to one indicates activation; otherwise, it indicates deactivation. Field 1304 may be the cell list ID configured in a higher layer. Field 1306 may be the BWP list ID configured in a higher layer. Field 1308 may be the cell ID indicating the identity of the serving cell. The serving cell may include the activated / deactivated SP-positioned SRS resource set. If field 1312 (e.g., the C field) is set to zero, field 1308 may also indicate the identity of the serving cell, including all resources indicated by the spatial relationship for the IDi field (if any). Field 1308 may be five bits in length. Field 1310 may be a BWPID, which indicates the uplink BWP as the code point of the Downlink Control Information (DCI) Bandwidth Part Indicator field, which includes the activated / deactivated SP-positioned SRS resource set. If field 1312 is set to zero, field 1310 may also indicate the identity of the BWP, which includes all resources indicated by the spatial relationship for the Resource IDi field (if any). Field 1310 may be two bits in length.

[0097] Figure 141 is a diagram illustrating an example MAC-CE 1400 according to various arrangements. MAC-CE 1400 may include one or more fields associated with MAC-CE 1300. MAC-CE 1400 may also include field 1402 (e.g., an I field). In some cases, MAC-CE 1400 may be an example of a MAC-CE modified to activate / deactivate SP-positioned SRS for a CA scenario.

[0098] In some cases, field 1402 may indicate whether MAC-CE 1400 is used for a CA scenario and / or whether the activated SRS resource set is from a reference serving cell / BWP. For example, if field 1402 is equal to one, 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] Figure 15A and 15B 1 is a diagram illustrating example wireless communications 1500 and 1501 according to various arrangements. Wireless communications 1500 and 1501 may include a first UE 1502 and a second UE 1506 in sidelink wireless communications. For example, UE 1502 may transmit a reference signal 1504 (e.g., SL-PRS) to UE 1506. In some cases, UE 1502 may be a transmitting UE and UE 1506 may be a receiving UE.

[0100] In some cases, the UE may be out of network coverage, the UE may be in network coverage but with poor channel quality, and / or the UE may determine that a highly accurate position needs to be calculated for the UE. For all of these use cases, sidelink technology can be applied (e.g., vehicle-to-everything (V2X) UE to perform positioning). The embodiments described herein may provide a physical layer filtering mechanism that enables the UE to validate the SL-PRS to be measured.

[0101] For NR sidelink positioning, in order to obtain the location information of the target UE, the positioning method can use the reference signal (e.g., SL-PRS1504) transmitted between the UEs. The obtained measurement results can be used to locate the target UE. For example, the UE can be configured by the higher layer with one or more sidelink resource pools (e.g., a resource pool that can be used for transmission / reception of SL-PRS or for positioning purposes can be an SL-PRS resource pool) for positioning purposes. The resource pool can be a shared resource pool for sidelink communication or a dedicated resource pool for SL-PRS. The SL-PRS resource pool can be associated with 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 involve 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 from the "Tx UE - Rx UE" link is measured (e.g., not from a different link). The "Tx UE - Rx UE" link may be unicast, multicast, or broadcast. For sidelink positioning, unlike sidelink data (carried in the physical sidelink shared channel (PSSCH)), whose signaling flow involves the physical (PHY), MAC, RLC, PDCP, and NAS layers, the SL-PRS may be generated, sent, received, and measured or processed in the PHY layer.

[0103] For the SL-PRS resource pool, sidelink control information (SCI) includes a broadcast type and source / destination UE information, which is used to trigger and / or reserve SL-PRS resources. For example, if the broadcast type indicated in the SCI of a transmitter UE (e.g., UE 1502) is unicast, the SL-PRS 1504 reserved by the SCI can be decoded by a specific receiver UE (e.g., UE 1506). The broadcast type can also be indicated as multicast 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 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, UE 1502 may receive SCI in 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, UE 1502 may use the source identifier and the destination identifier to perform pure physical layer filtering. UE 1502 may receive sidelink reference signals from UE 1506 based on the SCI. For example, UE 1502 may set the bits of the source ID (including source UE information) and the destination ID (including destination UE information) in the physical layer to 24 bits to perform 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 the SL-PRS sequence ID is associated with information associated with UE 1502 and / or information associated with UE 1506, the bits of each UE ID information are 24 bits.

[0105] exist Figure 15B In the example of FIG15 , the PHY layers of two UEs are shown. For example, the PHY layer of UE 1502 may include source ID 1508 and destination ID 1510, while the PHY layer of UE 1506 may include source ID 1512 and destination ID 1514. In the first example, if the SL-PRS is configured in a dedicated SL-PRS resource pool and the case type indicated in the SCI of UE 1502 is unicast, UE 1506 may determine whether the 24 bits of destination ID 1514 are equal to the 24 bits of source ID 1508 and / or determine whether the 24 bits of source ID 1512 are equal to the 24 bits of destination ID 1510. If the conditions are met (e.g., they are equal), UE 1506 may process the SL-PRS resources associated with the SCI of UE 1502. In a second example, if the SL-PRS is configured in a dedicated SL-PRS resource pool and if the broadcast type indicated in the SCI of UE 1502 is multicast and / or broadcast, UE 1506 may determine whether 24 bits of destination ID 1514 are equal to 24 bits of destination ID 1510 and / or determine whether 24 bits of source ID 1512 are equal to 24 bits of source ID 1508. If the conditions are met (e.g., they are equal), UE 1506 may process the SL-PRS resources associated with the SCI of UE 1502.

[0106] Figure 16 is a flow chart illustrating an example method 1600 for positioning enhancement of a wireless device according to various arrangements. In some cases, the method 1600 may include a PRS measurement window (eg, a period).

[0107] In some cases, for N2 or T2 cases, the equation for the PRS processing window (PPW) measurement period in the CA scenario can be calculated according to the following equation:

[0108] Equation 1: T RSTD，Total =max(T RSTD_wo_gap，i +T uncertainty，i ), if all positioning frequency layers are case 2.

[0109] In the first example, if the L1PFL to be aggregated belongs to case 2, then T total It can be calculated according to one or more of the following equations:

[0110] Equation 2: in In association with the number of PFLs to be aggregated or the PRS bandwidth, L1 is the number of positioning frequency layers to be aggregated using bandwidth / carrier aggregation, and i is the index of the positioning frequency layer.

[0111] Equation 3: in Associated with the number of PFLs or PRS bandwidth to be aggregated.

[0112] In the second example, since PRS is transmitted simultaneously on multiple PFLs in the case of carrier aggregation, PPW positioning is the same on multiple carriers, and T total It can be derived from the calculation of the reference PFL. Due to the complexity of processing multiple PFLs simultaneously, the equation for calculating the reference PFL (e.g., r) can be updated to the following equation:

[0113] Equation 4: T RSTD，Total =(T RSTD_wo_gap，r +T uncertainty，r ), where T RSTD_wo_gap，i It can be calculated by one of the following equations:

[0114] Equation 5: or

[0115] Equation 6:

[0116] The scaling factor or offset Associated with the number of PFLs or PRS bandwidth to be aggregated.

[0117] For example, at 1602, the wireless communication device may receive a configuration for a downlink reference signal for bandwidth aggregation from a first node of the network. At 1604, the wireless communication device may receive a downlink reference signal from a second node of the network according to the configuration. In some cases, the downlink reference signal for bandwidth aggregation is measured within a measurement window. The measurement window may be determined based on at least one of: multiplying at least one of the bandwidth of the downlink reference signal to be aggregated or the number of PFLs by a first parameter; or adding a second parameter to at least one of the bandwidth of the downlink reference signal to be aggregated or the number of PFLs. At 1606, the wireless communication device may determine a positioning measurement result for the downlink reference signal for bandwidth aggregation.

[0118] Figure 17 is a flow chart 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.

[0119] For example, the UE may report to the network the UE's capabilities to support positioning measurements in frequency layers within a frequency band. In some cases, the network may include an LMF, a gNB, or both. For the case of DL-PRS bandwidth aggregation, where the UE can 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, where a UE in the RRC_INACTIVE state may support aggregated measurements for a maximum of F frequency layers. The capabilities for RRC_INACTIVE may include support for a maximum number of aggregated DL-PRS resources per TRP, where a UE in the RRC_INACTIVE state may support aggregated measurements for a maximum of S DL-PRS resource sets from one TRP. The capabilities may include support for maximum bandwidth considering bandwidth aggregation for UEs 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, if one PFL is inside the initial downlink BWP and the other PFLs are outside the initial downlink BWP). The capability may include the duration N of the supported DL-PRS symbols. f(in ms), the UE may process every Tf ms for a given maximum bandwidth for a UE in RRC_INACTIVE state (e.g., assuming the duration of a DL-PRS symbol N is in ms, the UE may process every T ms for a given maximum bandwidth in a non-CA scenario). In some cases, one of the following thresholds may be met: N f Less than or not greater than N: N f =N–delta; or T f Greater than or not less than T: T f = T + delta, used to support duration capabilities. Capabilities may include support for a reduced number of PRSs that can be processed per timeslot for a UE in the RRC_INACTIVE state compared to non-CA scenarios. Capabilities may include support for DL-PRS processing samples for bandwidth aggregation in the RRC_INACTIVE state. Capabilities may include support for aggregated PRS measurements for DL-TDOA in the RRC_INACTIVE state. Capabilities may include support for aggregated PRS measurements for multiple RTTs in the RRC_INACTIVE state.

[0120] In certain cases, for situations where a UE may transmit SRS bandwidth aggregation for positioning purposes from multiple aggregated carriers, at least one of the following UE capabilities may be indicated. The capability may include support for positioning SRS transmission in the RRC_INACTIVE state for the initial uplink BWP (e.g., periodic). For example, in a carrier aggregation scenario, the following maximum numbers may be supported: 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. The capability may include support for positioning SRS transmission in the RRC_INACTIVE state configured externally to the initial uplink BWP (e.g., periodic). For example, bandwidth per SCS within a CC, bandwidth per SCS within multiple aggregated CCs, different values ​​and / or center frequencies, support for CC-independent SRS operation, switching time between SRS CA transmission and other transmissions in the initial uplink BWP or reception in the initial downlink BWP, and in CA scenarios, the following maximum numbers may be supported: SRS resource sets, P / SP SRS resources, P / SP resources per time slot, periodic SRS resources, and / or periodic SRS resources per time slot. Capabilities may include support for positioning SRS transmissions in the RRC_INACTIVE state configured both inside and outside the initial uplink BWP (e.g., periodic). Capabilities may include support for positioning SRS transmissions in the RRC_INACTIVE state for the initial BWP (e.g., semi-persistent). Capabilities may include support for positioning SRS transmissions in the RRC_INACTIVE state configured outside the initial uplink BWP (e.g., semi-persistent). Capabilities may include support for positioning SRS transmissions in the RRC_INACTIVE state configured both inside and outside the initial uplink BWP (e.g., semi-persistent). Capabilities may include support for positioning SRS transmissions in the RRC_INACTIVE state configured both inside and outside the initial uplink BWP (e.g., semi-persistent).

[0121] For example, at 1702, the wireless communication device may report the capabilities of the wireless communication device to the network. These capabilities may include a duration of a downlink reference signal that the wireless communication device can process for a maximum bandwidth and a time period when the wireless communication device is in an RRC inactive state. In some cases, the duration of a symbol may correspond to a number of symbols that is less than or not greater than a first threshold, or the time period may be greater than or not less than 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 from a second node of the network according to the configuration. At 1708, the wireless communication device may determine a positioning measurement result for the downlink reference signal for bandwidth aggregation.

[0122] Figure 18is a diagram illustrating an example mapping 1800 according to various arrangements. Mapping 1800 may summarize a mapping for SRSDCI indications related to bandwidth aggregation in an example embodiment. In some cases, mapping 1800 may be related to multi-cell enhancement.

[0123] For aperiodic SRS, similar to semi-persistent SRS, supporting a single DCI-triggered SRS resource set together in a linked carrier can reduce DCI overhead. In some cases, multiple physical downlink shared channels (PDSCH) / physical uplink shared channels (PUSCH) scheduled by a single DCI can reduce DCI control overhead and improve spectral efficiency in CA operation. For example, the maximum number of co-scheduled cells by DCI format 1_X / 0_X is 4, so that the network can configure up to 4 cells for DCI format 1_X / 0_X. These four cells can constitute a cell set configured via RRC signaling (e.g., RRC-configured cell set 1 1802). The DCI can also include indicators of multiple co-scheduled cells (e.g., DCI co-scheduled cell 1804). In some cases, the DCI can include an indicator of cell 1804 based on the RRC configuration or a subset of the RRC-configured cell set. In some cases, the indicator of cell 1804 can be used for multi-cell PUSCH / PDSCH transmission.

[0124] Figure 19 is a diagram illustrating an example mapping 1900 according to various arrangements. Mapping 1900 may outline mapping in one example embodiment for SRSDCI indication related to bandwidth aggregation. In some cases, mapping 1900 may relate to intra-band contiguous carriers.

[0125] For example, bandwidth aggregation for positioning measurements may include aggregation across up to three contiguous intra-band carriers. DCI may schedule SRS resources from multiple aggregated CCs. The DCI scheduling cells for positioning bandwidth aggregation may be based on higher-level network configuration (e.g., the gNB may configure up to three cells via RRC signaling). In some cases, the cells configured for positioning bandwidth aggregation via RRC signaling may be RRC-configured cell set 2 for positioning CA 1912.

[0126] 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 in cell set 2 1912, or selection of cells in cell set 2 1912 may be based on cell set 1 1902. For example, referring to Figure 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 expected to be aggregated, transmitted from the same panel, the same antenna panel, and / or the same port.

[0127] Figure 20 is a diagram illustrating an example mapping 2000 according to various arrangements. Mapping 2000 may summarize mappings in one example embodiment for SRSDCI indications related to bandwidth aggregation. In some cases, mapping 2000 may be related to DCI scheduling.

[0128] For example, the DCI schedule 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 an SRS request field and an SRS offset indicator field (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 the SRS offset indicator field may indicate the cell to be used for SRS transmission. In such a case, cell 1 1904 and cell 3 1908 are used for bandwidth aggregated SRS transmission (e.g., because cell set 2 1912 selects cell 1 1904 and cell 3 1908) and may meet the requirements (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.

[0129] Although various arrangements of the present solution have been described above, it should be understood that they have been presented by way of example only, and not by way of limitation. Similarly, various diagrams may depict example architectures or configurations, which are provided to enable one of ordinary skill in the art to understand the example features and functions of the present solution. However, such persons will understand that the solution is not limited to the example architectures or configurations shown, but may be implemented using various alternative architectures and configurations. In addition, as will be understood by one of ordinary skill in the art, one or more features of some arrangements may be combined with one or more features of another arrangement described herein. Therefore, the breadth and scope of the present disclosure should not be limited by any of the exemplary arrangements described above.

[0130] It should also be understood that any reference to an element herein using names such as "first," "second," etc. does not generally limit the quantity or order of those elements. Instead, these names can be used herein as a convenient means of distinguishing two or more elements or instances of elements. Thus, reference to a first and a second element does not mean that only two elements can be used, or that the first element must be positioned before the second element in some manner.

[0131] In addition, those skilled in the art will understand that information and signals can be represented using a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, and symbols that may be referenced in the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0132] Those of ordinary skill in the art will also understand that any of the various illustrative logic blocks, modules, processors, components, circuits, methods, and functions associated with the aspects disclosed herein may be implemented by electronic hardware (e.g., digital implementation, analog implementation, or a combination of the two), firmware, various forms of programs or design code containing instructions (which, for convenience, may be referred to herein as "software" or "software modules"), or any combination of these technologies. In order to clearly illustrate this interchangeability of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps have been generally described above in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software, or a combination of these technologies, depends on the specific application and the design constraints imposed on the overall system. A skilled person may implement the described functionality in various ways for each specific application, but such implementation decisions do not cause a departure from the scope of this disclosure.

[0133] In addition, it will be understood by those of ordinary skill in the art that the various illustrative logic blocks, modules, devices, components, and circuits described herein may be implemented within or performed by an integrated circuit (IC), which may include a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic device, or any combination thereof. The logic blocks, modules, and circuits may also include antennas and / or transceivers to communicate with various components within a network or within a device. A general-purpose processor may be a microprocessor, but in an alternative, the processor may be any conventional processor, controller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors and a DSP core, or any other suitable configuration to perform the functions described herein.

[0134] If implemented in software, the functions may be stored as one or more instructions or codes on a computer-readable medium. Thus, the steps of the methods or algorithms disclosed herein may be implemented as software stored on a computer-readable medium. Computer-readable media include computer storage media and communication media, including any medium that can be implemented to transfer a computer program or code from one place to another. The 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 the desired program code in the form of instructions or data structures and that can be accessed by a computer.

[0135] In this document, the term "module" as used herein refers to software, firmware, hardware, and any combination of these elements for performing the associated functions described herein. In addition, for the purposes of discussion, various modules are described as discrete modules; however, as will be apparent to one of ordinary skill in the art, two or more modules can be combined to form a single module that performs the associated functions according to the arrangement of the present solution.

[0136] In addition, memory or other storage and communication components can be adopted in the arrangement of the present solution. It should be understood that, for the sake of clarity, the above description has described the arrangement of the present solution with reference to different functional units and processors. However, it is obvious that any suitable functional distribution between different functional units, processing logic elements or domains can be used without compromising the present solution. For example, functions illustrated as being performed by separate processing logic elements or controllers can be performed by the same processing logic element or controller. Therefore, reference to a particular functional unit is only a reference to the appropriate components that provide the functionality, rather than indicating a strict logical or physical structure or organization.

[0137] Various modifications to the implementations described in this disclosure will be apparent to those skilled in the art.

[0138] It will be apparent that the general principles defined herein can be applied to other implementations without departing from

[0139] Scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the implementations shown herein, but should be

[0140] The broadest scope consistent with the novel features and principles disclosed herein is accorded to the following claims

[0141] As described in.

Claims

1. A wireless communication method, comprising: Receiving, by a wireless communication device from a first node of a network, a configuration of a downlink reference signal for bandwidth aggregation; receiving, by the wireless communication device, the downlink reference signal from a second node of the network according to the configuration; as well as A positioning measurement result of the downlink reference signal for the bandwidth aggregation is determined by the wireless communication device.

2. The method according to claim 1, wherein The downlink reference signal comprises a downlink positioning reference signal (DL-PRS); wherein the first node comprises a location management function (LMF) of the network; and The second node comprises a base station of the network.

3. The method of claim 1 , wherein the configuring comprises: High-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, each of the plurality of PFLs including a set of at least one resource for the downlink reference signal.

4. The method of claim 1 , wherein the configuring comprises: Higher layer signaling indicating that multiple positioning frequency layers (PFLs) used for bandwidth aggregation are linked; An indicator indicating a reference PFL of each of the plurality of PFLs for the downlink reference signal, each of the plurality of PFLs including a set of at least one resource for the downlink reference signal.

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

6. The method according to claim 1, wherein Multiple positioning frequency layers (PFLs) are linked; The configuration includes an indicator indicating whether a configuration parameter of the downlink reference signal is enabled.

7. The method according to claim 1, comprising: The downlink reference signal is received according to the transmission time indicated in the downlink reference signal assistance data.

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

9. The method of claim 1 , wherein the configuring comprises: The timing error margin of all transmit-receive point (TRP) transmission timing error groups (TEGs) for multiple linked positioning frequency layers (PFLs).

10. The method according to claim 1, wherein Resources for the downlink reference signal aggregated from a plurality of positioning frequency layers (PFLs) are transmitted by the same transmission reception point (TRP); and Two or more resource sets for the downlink reference signal are associated with the TRP.

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

12. The method of claim 1 , wherein the configuration comprises at least one of: a resource set list of the downlink reference signal for a transmission-reception point (TRP), the resource set list being used for bandwidth aggregation; or A resource list of a resource set used for the downlink reference signaling of the bandwidth aggregation.

13. The method of claim 1 , wherein the configuration comprises at least one of: a first indicator indicating whether a resource set used 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 the resources used for the downlink reference signal are used for the bandwidth aggregation, the second indicator being in the auxiliary data for the TRP.

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

15. The method of claim 1 , wherein the configuration comprises a positioning frequency layer (PFL) list for the bandwidth aggregation, wherein the PFLs share at least one of the following: Subcarrier spacing (SCS); comb size; Cyclic Prefix (CP); or Auxiliary data for each transmission-reception point (TRP).

16. The method according to claim 1, wherein The configuration includes: a first bandwidth aggregation configuration for bandwidth aggregation of the downlink reference signal, and a second bandwidth aggregation configuration for bandwidth aggregation of the downlink reference signal, the first bandwidth aggregation configuration being used in a radio resource control (RRC)-connected state of the wireless communication device, and the second bandwidth aggregation configuration being used in an RRC-inactive state of the wireless communication device; or The configuration includes a bandwidth aggregation configuration for bandwidth aggregation of the downlink reference signal for both the RRC-Connected state and the RRC-Inactive state of the wireless communication device.

17. The method of claim 1, wherein the configuring comprises: a bandwidth aggregation configuration for bandwidth aggregation of the downlink reference signal for a radio resource control (RRC)-inactive state of the wireless communication device; as well as A plurality of associated positioning frequency layers (PFLs) associated with the downlink reference signal within an initial downlink bandwidth part (BWP) for the RRC-Inactive state of the wireless communication device.

18. The method according to claim 1, wherein The configuration includes: a plurality of associated PFLs associated with a reference positioning frequency layer (PFL) for the downlink reference signal for a radio resource control (R RC)-inactive state of the wireless communication device; A first subcarrier spacing (SCS) of the plurality of associated PFLs is the same as or different from a second SCS of an initial downlink bandwidth part (BWP); A first cyclic prefix (CP) of the plurality of associated PFLs is the same as or different from a CPSCS of the initial downlink bandwidth part (BWP); One of the following: 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.

19. The method according to claim 1, wherein The network includes a location management function (LMF) and a base station; The LMF sends a request for the configuration to the base station, where the request includes a bandwidth aggregation indicator, where the indicator includes one of the following items: One bit indicating whether bandwidth aggregation is required for the downlink reference signal; or A plurality of bits indicating whether the bandwidth aggregation for the downlink reference signal is required and the number of positioning frequency layers (PFL) used for the bandwidth aggregation.

20. The method of claim 1, wherein the downlink reference signal is measured in a measurement window, the measurement window being determined based on at least one of: multiplying by a first parameter, the first parameter being based on at least one of: a bandwidth or a number of positioning frequency layers (PFLs) of the downlink reference signals to be aggregated; or A second parameter is added, the second parameter being based on at least one of: a bandwidth of the downlink reference signals to be aggregated or a number of positioning frequency layers (PFL).

21. The method according to claim 1, comprising: receiving, by the wireless communication device, a measurement request from the network, the measurement request indicating that the wireless communication device is requested to report the positioning measurement result for the bandwidth aggregation; as well as The wireless communication device reports the positioning measurement result to the network, where the positioning measurement result includes at least one of the following items: a measurement indicator indicating that the positioning measurement result is determined by aggregating resources of a 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, and a second identifier of a second resource or a second resource set for measuring the downlink reference signal for a measurement element; or A resource set identifier or a list of resource identifiers for measuring the downlink reference signal for each TRP for a measurement element.

22. The method according to claim 1, comprising: receiving, by the wireless communication device, a sounding reference signal (SRS) configuration for the bandwidth aggregation from the second node of the network; as well as and sending, by the wireless communication device, an SRS to the second node of the network according to the SRS configuration, wherein at least one of the following items: The SRS configuration for a plurality of component carriers (CCs) is associated with an SRS configuration within an initial uplink bandwidth part (BWP) or is associated with a CC including the initial BWP; Sending the SRS on an initial CC among the multiple CCs has a higher priority than sending the SRS on another CC among the multiple CCs; or The SRS configurations for the plurality of CCs are associated with a reference CC.

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

24. The method of claim 1, comprising: A sounding reference signal (SRS) configuration for the bandwidth aggregation is received by the wireless communication device from the network, wherein at least one of the following: The SRS configuration includes a list of additional serving cells other than an initial component carrier (CC) for the bandwidth aggregation, each of the additional serving cells being associated with or including one or the list of a bandwidth part (BWP) configuration and a positioning SRS configuration; Multiple serving cells participating in bandwidth aggregation share the same time alignment timer and receive power change threshold; The SRS configuration includes the SRS positioning configurations of a plurality of associated BWPs, the SRS positioning configurations sharing a common SRS configuration received from the network or corresponding to a reference SRS positioning configuration; The SRS configuration includes 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.

25. The method of claim 1, comprising: 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 at least one of the following: a list of activated serving cell identifiers, the list of activated serving cell identifiers being a subset of a list of radio resource control (RRC) configured serving cell identifiers; or A list of activated bandwidth part (BWP) identifiers, said list of activated BWP identifiers being a subset of the list of RRC configured BWP identifiers.

26. The method of claim 1, comprising: reporting, by the wireless communication device, to the network, capabilities of the wireless communication device, the capabilities comprising: a duration of the downlink reference signal that the wireless communication device can process for a time period, for a maximum bandwidth, when the wireless communication device is in a radio resource control (RRC)-inactive state, wherein at least one of the following items: said duration of a symbol corresponds to a number of symbols that is less than or not greater than a first threshold; The time period is greater than or not less than a second threshold.

27. The method of claim 1, comprising: receiving, by the wireless communication device, sidelink control information (SCI) in a physical layer, the SCI comprising a source identifier and a destination identifier, the source identifier being in 24 bits and the destination identifier being in 24 bits, wherein the wireless communication device performs pure physical layer filtering using the source identifier and the destination identifier; as well as A sidelink reference signal is received by the wireless communication device from the other wireless communication device based on the SCI.

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

29. A wireless communication apparatus comprising at least one processor and a memory, wherein the at least one processor is configured to read code from the memory and implement the method of claim 1.

30. A computer program product comprising computer-readable program medium code stored thereon, which, when executed by at least one processor, causes the at least one processor to implement the method of claim 1.

31. A wireless communication method, comprising: Sending, by the network to the wireless communication device, a configuration of a downlink reference signal for bandwidth aggregation; The network sends the downlink reference signal to the wireless communication device according to the configuration; as well as Positioning measurement results of the downlink reference signal for the bandwidth aggregation are received by the network from the wireless communication device.

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

33. 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 implement the method of claim 30.

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