Method for avoiding measurement error of center frequency difference in NR carrier phase positioning

Abstract

Systems, methods, apparatuses, and computer program products for avoiding measurement errors due to center frequency differences in NR carrier phase positioning. A method may include sending, by an LMF, a request to at least one of a network entity or a user equipment to obtain at least one carrier phase measurement using at least one center frequency identifier configuration for at least one positioning reference signal, where the at least one positioning reference signal includes at least one uplink SRS or DL PRS.

Description

Technical Field

[0001] Some example embodiments may generally relate to mobile or wireless telecommunication systems, such as 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE), 5th Generation (5G) Radio Access Technology (RAT), New Radio (NR) access technology, 6th Generation (6G), and / or other communication systems. For example, certain example embodiments may relate to systems and / or methods for avoiding measurement errors. Background Art

[0002] Examples of mobile or wireless telecommunication systems may include radio frequency (RF) 5G RAT, Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (UTRAN), LTE Evolved UTRAN (E-UTRAN), LTE-Advanced (LTE-A), LTE-APro, NR access technology, and / or MulteFire Alliance. 5G wireless systems refer to next generation (NG) radio systems and network architectures. 5G systems are typically built on 5G NR, but 5G (or NG) networks can also be built on E-UTRA radio. NR is expected to support service categories such as enhanced mobile broadband (eMBB), ultra-reliable low latency communications (URLLC), and massive machine type communications (mMTC). NR is expected to provide ultra-wideband, ultra-robust, low latency connectivity, and large-scale networks to support the Internet of Things (IoT). Next Generation Radio Access Network (NG-RAN) represents a radio access network (RAN) for 5G, which can provide radio access for NR, LTE, and LTE-A. It should be noted that the node that provides radio access functions for user equipment in 5G (e.g., similar to Node B in UTRAN or evolved Node B (eNB) in LTE) can be called next-generation Node B (gNB) when built on NR radio, and can be called next-generation eNB (NG-eNB) when built on E-UTRA radio. Summary of the invention

[0003] According to some example embodiments, a method may include sending, by the LMF, a request to at least one of a network entity or a UE to obtain at least one CP measurement using at least one center frequency identifier configuration for at least one PRS. The at least one PRS includes at least one UL SRS or DL ​​PRS.

[0004] According to certain example embodiments, an apparatus may include means for sending a request to at least one of a network entity or a UE to obtain at least one CP measurement using at least one center frequency identifier configuration for at least one PRS. The at least one PRS includes at least one UL SRS or DL ​​PRS.

[0005] According to various example embodiments, a non-transitory computer readable medium may include program instructions that, when executed by an apparatus, cause the apparatus to perform at least one method. The method may include sending a request to at least one of a network entity or a UE to obtain at least one CP measurement using at least one center frequency identifier configuration for at least one PRS. The at least one PRS includes at least one UL SRS or DL ​​PRS.

[0006] According to some example embodiments, a computer program product may perform a method. The method may include sending a request to at least one of a network entity or a UE to obtain at least one CP measurement using at least one center frequency identifier configuration for at least one PRS. The at least one PRS includes at least one UL SRS or DL ​​PRS.

[0007] According to certain example embodiments, an apparatus may include at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least send a request to at least one of a network entity or a UE to obtain at least one CP measurement using at least one center frequency identifier configuration for at least one PRS. The at least one PRS includes at least one UL SRS or DL ​​PRS.

[0008] According to various example embodiments, an apparatus may include transmitting circuitry configured to perform transmitting a request to at least one of a network entity or a UE to obtain at least one CP measurement using at least one center frequency identifier configuration for at least one PRS. The at least one PRS includes at least one UL SRS or DL ​​PRS.

[0009] According to some of the example embodiments, a method may include receiving, by a UE, at least one center frequency identifier configuration of a DL PRS within a PFL.The method may also include receiving, by the UE, a request to perform CP measurement based on the at least one center frequency identifier configuration.

[0010] According to some example embodiments, an apparatus may include means for receiving at least one center frequency identifier configuration of a DL PRS within a PFL.The apparatus may also include means for receiving a request to perform CP measurements based on the at least one center frequency identifier configuration.

[0011] According to various example embodiments, a non-transitory computer readable medium may include program instructions that, when executed by an apparatus, cause the apparatus to perform at least one method. The method may include receiving at least one center frequency identifier configuration of a DL PRS within a PFL. The method may also include receiving a request to perform CP measurement based on the at least one center frequency identifier configuration.

[0012] According to some example embodiments, a computer program product may perform a method. The method may include receiving at least one center frequency identifier configuration of a DL PRS within a PFL. The method may also include receiving a request to perform a CP measurement based on the at least one center frequency identifier configuration.

[0013] According to certain example embodiments, an apparatus may include at least one processor and at least one memory, wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to at least receive at least one center frequency identifier configuration of a DL PRS within a PFL. The instructions, when executed by the at least one processor, may also cause the apparatus to at least receive a request to perform CP measurement based on the at least one center frequency identifier configuration.

[0014] According to various example embodiments, an apparatus may include receiving circuitry configured to perform receiving at least one center frequency identifier configuration of a DL PRS within a PFL. The apparatus may also include receiving circuitry configured to perform receiving a request to perform CP measurement based on the at least one center frequency identifier configuration.

[0015] According to some example embodiments, a method may include sending, by a network entity, a UL SRS configuration configured for at least one of a UE or a PRU UL SRS transmission to an LMF. The method may also include receiving, by the network entity, at least one center frequency identifier configuration for the UL SRS from the LMF. The method may also include receiving, by the network entity, from the LMF a request to obtain one or more CP measurements based on the at least one center frequency identifier configuration. The method may also include performing one or more CP measurements, the one or more CP measurements being associated with at least one center frequency ID configured by the at least one center frequency identifier configuration for the UL SRS. The method may also include sending, by the network entity, to the LMF, one or more measurements and the associated at least one center frequency ID.

[0016] According to certain example embodiments, an apparatus may include a component for sending a UL SRS configuration configured for at least one of a UE or PRU ULSRS transmission to an LMF. The apparatus may also include a component for receiving at least one center frequency identifier configuration for UL SRS from the LMF. The apparatus may also include a component for receiving a request from the LMF to obtain one or more CP measurements based on at least one center frequency identifier configuration. The apparatus may also include a component for performing one or more CP measurements associated with at least one center frequency ID configured by at least one center frequency identifier configuration for UL SRS. The apparatus may also include a component for sending one or more measurements and the associated at least one center frequency ID to the LMF.

[0017] According to various example embodiments, a non-transitory computer-readable medium may include program instructions that, when executed by an apparatus, cause the apparatus to perform at least one method. The method may include sending a UL SRS configuration configured for at least one of a UE or PRU UL SRS transmission to an LMF. The method may also include receiving at least one center frequency identifier configuration for UL SRS from the LMF. The method may also include receiving a request from the LMF to obtain one or more CP measurements based on at least one center frequency identifier configuration. The method may also include performing one or more CP measurements associated with at least one center frequency ID configured by at least one center frequency identifier configuration for UL SRS. The method may also include sending one or more measurements and associated at least one center frequency ID to the LMF.

[0018] According to some example embodiments, a computer program product may perform a method. The method may include sending a UL SRS configuration configured for at least one of a UE or a PRU UL SRS transmission to an LMF. The method may also include receiving at least one center frequency identifier configuration for the UL SRS from the LMF. The method may also include receiving a request from the LMF to obtain one or more CP measurements based on the at least one center frequency identifier configuration. The method may also include performing one or more CP measurements associated with at least one center frequency ID configured by the at least one center frequency identifier configuration for the UL SRS. The method may also include sending one or more measurements and the associated at least one center frequency ID to the LMF.

[0019] According to certain example embodiments, an apparatus may include at least one processor and at least one memory, the at least one memory storing instructions, which when executed by the at least one processor causes the apparatus to at least send a UL SRS configuration configured for at least one of a UE or a PRU UL SRS transmission to an LMF. The instructions, when executed by the at least one processor, may also cause the apparatus to at least receive at least one center frequency identifier configuration for UL SRS from the LMF. The instructions, when executed by the at least one processor, may also cause the apparatus to at least receive a request to obtain one or more CP measurements based on at least one center frequency identifier configuration from the LMF. The instructions, when executed by the at least one processor, may also cause the apparatus to at least perform one or more CP measurements associated with at least one center frequency ID configured by at least one center frequency identifier configuration for UL SRS. The instructions, when executed by the at least one processor, may also cause the apparatus to at least send one or more measurements and associated at least one center frequency ID to the LMF.

[0020] According to various example embodiments, an apparatus may include a transmitting circuit system configured to perform sending a UL SRS configuration configured for at least one of a UE or PRU UL SRS transmission to an LMF. The apparatus may also include a receiving circuit system configured to perform receiving at least one center frequency identifier configuration for UL SRS from the LMF. The apparatus may also include a receiving circuit system configured to perform receiving a request from the LMF to obtain one or more CP measurements based on at least one center frequency identifier configuration. The apparatus may also include a measuring circuit system configured to perform performing one or more CP measurements associated with at least one center frequency ID configured by at least one center frequency identifier configuration for UL SRS. The apparatus may also include a transmitting circuit system configured to perform sending one or more measurements and associated at least one center frequency ID to the LMF.

[0021] According to some example embodiments, a method may include receiving, by a PRU, from an LMF, at least one center frequency identifier configuration for a DL PRS within a PFL. The method may also include receiving, by a positioning reference unit, a request to perform a CP measurement based on the at least one center frequency identifier configuration. The method may also include performing, by the positioning reference unit, at least one CP measurement associated with at least one center frequency ID configured by the at least one center frequency identifier configuration. The method may also include sending, by the positioning reference unit, a report to the LMF regarding the at least one CP measurement and the associated at least one center frequency ID for the at least one CP measurement.

[0022] According to certain example embodiments, an apparatus may include means for receiving from an LMF at least one center frequency identifier configuration for a DL PRS within a PFL. The apparatus may also include means for receiving a request to perform a CP measurement based on the at least one center frequency identifier configuration. The apparatus may also include means for performing at least one CP measurement associated with at least one center frequency ID configured by the at least one center frequency identifier configuration. The apparatus may also include means for sending a report to the LMF regarding the at least one CP measurement and the associated at least one center frequency ID for the at least one CP measurement.

[0023] According to various example embodiments, a non-transitory computer-readable medium may include program instructions that, when executed by an apparatus, cause the apparatus to perform at least one method. The method may also include receiving at least one center frequency identifier configuration for a DL PRS within a PFL from an LMF. The method may also include receiving a request to perform a CP measurement based on at least one center frequency identifier configuration. The method may also include performing at least one CP measurement associated with at least one center frequency ID configured by at least one center frequency identifier configuration. The method may also include sending a report to the LMF regarding at least one CP measurement and at least one center frequency ID associated with the at least one CP measurement.

[0024] According to some example embodiments, a computer program product may perform a method. The method may also include receiving at least one center frequency identifier configuration for a DL PRS within a PFL from an LMF. The method may also include receiving a request to perform a CP measurement based on the at least one center frequency identifier configuration. The method may also include performing at least one CP measurement associated with at least one center frequency ID configured by the at least one center frequency identifier configuration. The method may also include sending a report to the LMF regarding the at least one CP measurement and the associated at least one center frequency ID for the at least one CP measurement.

[0025] According to certain example embodiments, an apparatus may include at least one processor and at least one memory, the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least receive from an LMF at least one center frequency identifier configuration for a DL PRS within a PFL. The instructions, when executed by the at least one processor, may also cause the apparatus to at least receive a request to perform a CP measurement based on the at least one center frequency identifier configuration. The instructions, when executed by the at least one processor, may also cause the apparatus to at least perform at least one CP measurement associated with at least one center frequency ID configured by the at least one center frequency identifier configuration. The instructions, when executed by the at least one processor, may also cause the apparatus to at least send to the LMF a report on at least one CP measurement and at least one center frequency ID associated with the at least one CP measurement.

[0026] According to certain example embodiments, an apparatus may include a receiving circuit system configured to perform receiving from an LMF at least one center frequency identifier configuration for a DL PRS within a PFL. The apparatus may also include a receiving circuit system configured to perform receiving a request to perform a CP measurement based on the at least one center frequency identifier configuration. The apparatus may also include a measuring circuit system configured to perform performing at least one CP measurement associated with at least one center frequency ID configured by the at least one center frequency identifier configuration. The apparatus may also include a sending circuit system configured to perform sending a report to the LMF regarding the at least one CP measurement and the associated at least one center frequency ID for the at least one CP measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] For a proper understanding of the example embodiments, reference should be made to the accompanying drawings, in which:

[0028] Figure 1 An example of uplink carrier phase positioning is shown;

[0029] Figure 2 shows an example of a signaling diagram according to certain example embodiments;

[0030] Figure 3 shows an example of another signaling diagram according to some example embodiments;

[0031] Figure 4 shows an example of another signaling diagram according to various example embodiments;

[0032] Figure 5 An example of a flow chart illustrating a method according to certain example embodiments;

[0033] Figure 6 An example of a flow chart illustrating a method according to some example embodiments;

[0034] Figure 7 An example of a flow chart illustrating a method according to various example embodiments;

[0035] Figure 8 An example of a flow chart illustrating a method according to certain example embodiments;

[0036] Fig. 9 illustrates examples of various network devices according to some example embodiments; and

[0037] Fig.10 Examples of 5G network and system architectures are shown in accordance with certain example embodiments. DETAILED DESCRIPTION

[0038] It will be readily understood that the components of certain example embodiments, as generally described and illustrated in the figures herein, may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of some example embodiments of systems, methods, devices, and computer program products for avoiding measurement errors is not intended to limit the scope of certain example embodiments, but is representative of selected example embodiments.

[0039] 3GPP RAN1 is developing carrier phase (CP) positioning in conjunction with currently supported positioning technologies. This may include specifying physical layer measurements and signaling to support NR downlink (DL) and uplink (UL) CP positioning (CPP) for UE-based, UE-assisted, and NG-RAN node-assisted positioning. For example, existing DL Positioning Reference Signal (PRS) and UL Sounding Reference Signal (SRS) used for positioning may be used for NR CP measurements, and measurements limited to a single carrier / positioning frequency layer (PFL) may be specified. This may also include specifying corresponding new core requirements, as well as identifying and specifying impacts on existing RAN4 specifications, including radio resource management (RRM) measurements (including PRS measurement period / reporting) and procedures without measurement gaps in connected and inactive modes.

[0040] Figure 1The basic architecture of UL CPP is shown. In NG-RAN node assisted UL based CPP, the target UE and positioning reference unit (PRU) can send UL SRS, and multiple transmission and reception points (TRPs) can measure reference signal carrier phase (RSCP) measurement. The UL RSCP measurement report can then be reported to the location management function (LMF), which can estimate the target UE position based on time measurement, phase measurement of the target UE and PRU, and / or the position of the PRU and / or TRP. In some example embodiments, a base station (e.g., a gNB) may have at least one transmission and reception point (TRP) connected to it to facilitate receiving signals from and sending signals to the UE based on control by the base station. Therefore, within the cell coverage, there may be multiple TRPs. At least one TRP may be associated with a physical cell ID. In some example embodiments, the time measurement may include DL reference signal time difference RSTD (RSTD), UE Rx-Tx time difference measurement, relative arrival time (RTOA) measurement, and / or gNBRx-Tx time difference measurement.

[0041] DL PRS can be sent to the target UE and PRU in DL-based CPP. DL-based CPP can be applied to UE-assisted or UE-based mode. For example, in UE-assisted mode, the target UE / PRU can measure DL RSCP measurements and report them to the LMF. The LMF can then calculate the target UE position based on timing measurements, phase measurements performed by the target UE and PRU, and / or the location of the TRP. In contrast, in UE-based mode, the target UE can measure DL RSCP measurements, receive PRU measurements from the LMF, and calculate its own position based on timing measurements, phase measurements performed by the UE, PRU measurements received from the LMF, and the location of the TPR and PRU. In addition, UE-based positioning may not require CP measurements from the PRU; without measurements from the PRU, UE-based positioning may be feasible at the target UE.

[0042] For the kth (k th ) The SRS resource sent by the UE, the i-th (i th )The phase measurement at TRP can be determined according to:

[0043]

[0044] in It is possible to represent cyclic phase measurements and avoid the repeated use of 2π;d ik can represent the actual geographical distance between the kth UE and the ith TRP; c can represent the speed of light; δ k It can represent the internal clock deviation at the kth UE; δi can represent the internal clock deviation at the i-th TRP; and N ik can represent the integer ambiguity of the propagation wavelength. Similar to (1), the same equation can be derived for the phase measurement at the jth TRP, so that

[0045] Unknown phase shifts due to the TRP and the oscillator phase at the UE may add ambiguity to the estimated phase and compromise the positioning estimate accuracy. Single differential measurements can be obtained from Minus is used to eliminate the internal clock deviation at the kth UE, as follows:

[0046]

[0047] in and Through this single differential operation, UE clock bias can be eliminated, similar to the RTOA measurement of the UL Time Difference of Arrival (TDOA) method. Similarly, the clock error between TRPs can be removed by performing a double differential measurement, which can be performed by subtracting the single differential measurement of the PRU from the single differential measurement of the kth UE.

[0048] If the pth UE is a PRU, then for the SRS sent from the pth PRU, the single differential measurement between the i-th and j-th TRPs can be written as in and The clock error between the i-th and j-th TRPs (i.e. and )yes and and may not depend on the UE / PRU index in some cases. They can be obtained by Minus to be eliminated, as follows:

[0049]

[0050] in and Therefore, the clock error between the target UE and the TRP and the clock error between the TRPs can be removed using single and double differential measurements respectively. The only remaining ambiguities are the integer ambiguity parameters (i.e. The entity calculating the UE position (i.e., the UE in DL CPP UE mode, or the LMF in DL CPP UE Assisted and UL CPP NG-RAN Node Assisted modes) may estimate the CP measurement of the target UE and PRU using the time measurements associated with the CP measurement of the target UE and PRU.

[0051] DL RSCP / RSCP difference (RSCPD) and UL RSCP measurements may include various definitions. For example, the specific RF frequency associated with the DL CP measurement may be defined by default as the center frequency of the DL PFL. Similarly, for positioning purposes, the specific RF frequency associated with the UL CP measurement may be defined by default as the center frequency of the SRS transmission bandwidth. When DL RSCPD / RSCP measurements are reported together with DL RSTD / UE Rx-Tx time difference measurements, the DL RSCPD / RSCP measurements may be obtained only from a single DL PFL.

[0052] A UE with the capability to support CPP in RRC_CONNECTED / RRC_INACTIVE / RRC_IDLE state may measure DL PRS from the entire DL PFL (i.e., PRS measurement is not limited to its initial DL BWP). When the UE is in RRC_INACTIVE / RRC_IDLE state, the RF frequency associated with DL RSCP / RSCPD may be defined in a similar manner to that of a UE in RRC_CONNECTED state. In UL CPP, a base station may have the flexibility to perform UL RSCP measurements from all or part of the bandwidth configured for SRS resources. Similarly, in DL CPP, a UE may have the flexibility to measure DL RSCP and RSCPD measurements using all or part of the bandwidth configured for DL ​​PRS transmission. Therefore, it is necessary to avoid positioning errors caused by the center frequency difference between CP measurements and reference signal transmissions in UL and DL CPP.

[0053] It is necessary to avoid using a center frequency for UL and DL CP measurements that is different from the center frequency used for transmission of UL SRS and DL PRS resources. It is also necessary to inform the entity calculating the UE position (e.g., the UE in DL CPP UE mode, or the LMF in DL CPP UE Assisted mode and the LMF in UL CPP NG-RAN Node Assisted mode) of any center frequencies used for CP measurements, which may be different from the center frequencies used for SRS and PRS transmissions, given the above-mentioned flexibility that the measuring entity (e.g., the gNB in ​​UL CPP, or the UE in DL CPP) may have.

[0054] Certain example embodiments described herein may have various technical effects to overcome the above disadvantages. For example, certain example embodiments may relate to techniques for avoiding reporting center frequency errors in UL and DL CP measurements to improve the target positioning estimation accuracy of the CPP method. For example, in UL CPP, a base station may have the flexibility to measure UL RSCP measurements from all or part of the bandwidth used for SRS transmission. Similarly, in DL CPP, a UE may have the flexibility to measure DL RSCP / RSCPD measurements using all or part of the resource blocks (RBs) used for DL ​​PRS transmission. Therefore, certain example embodiments discussed below are directed to improvements in computer-related technologies.

[0055] As mentioned above, λ in the above equation (1) comes from the center frequency. In order to convert the CP measurement into a distance metric, the center frequency of the CP measurement can be fixed for the PRS / SRS transmission based on the PRS / SRS bandwidth. The LMF can provide a PRS configuration, where each PRS resource is associated with a PFL; therefore, the LMF may already know the center frequency information on the PRS. However, the UE / gNB can be configured to perform CP measurements based on a portion of the configured PRS / SRS bandwidth. The UE / gNB can obtain multiple CP measurements within a PFL or component carrier, but the center frequency of each measurement may not be aligned with the center frequency of the PFL / CC. Therefore, the measured center frequency may be different from that known by the LMF.

[0056] In addition, as described above, single differential measurement, double differential measurement and timing measurement can be used in CPP to eliminate the unknown phase offset between the target UE and TRP, between different TRPs and solve the integer ambiguity problem respectively. This is under the assumption that the UL and DL CP measurements have the same center frequency as the center frequency used to send UL SRS and DL PRS resources. However, the UL and DL CP measurements may have a center frequency different from the center frequency used to send UL SRS and DL PRS resources. If there is a difference between the center frequencies used for CP measurement and RS transmission, positioning errors may be caused, thereby causing the CPP method to fail to estimate the UE position, preventing it from achieving the target positioning estimation accuracy.

[0057] Certain example embodiments may enable the LMF to instruct the gNB in ​​UL CPP or the UE and PRU in DL CPP to report CP measurements using a predefined / configured group of center frequency IDs across the bandwidth of SRS transmissions in UL CPP or the DL PFL of PRS transmissions in DL CPP. Some example embodiments may also enable the gNB, UE and / or PRU to provide multiple CP measurement sets to the LMF, where each set may correspond to a specific predefined / configured center frequency based on the RB configuration of the SRS and / or PRS resources, while maintaining relative phase coherence between each CP measurement set. Therefore, positioning errors due to center frequency differences in CP measurements can be avoided to improve target positioning estimation accuracy. Various example embodiments may also allow the LMF to receive valid information about any center frequency used to obtain CP measurements so that the UE position can be calculated using CP measurements reported by the gNB (in UL CPP) or the target UE and PRU (in DL CPP). Certain example embodiments may be configured with new behaviors and signaling involving serving / neighboring gNBs and LMF for target UEs and PRUs, and may be implemented for UL CPP and DL CPP (based on UE and UE assisted mode). As described herein, in various example embodiments, the CP measurement may represent at least one RSCP and / or RSCPD measurement.

[0058] Figure 2 An example of a signaling diagram 200 is shown, which depicts a network-based UL CPP mode, such as an NG-RAN node assisted mode. The target UE 220 and the PRU 240 may be similar to the UE 920. According to certain example embodiments, the NE 230 and the LMF 250 may be similar to the NE 910, such as Fig. 9 shown.

[0059] At operation 201, UL CP positioning may be initiated between the target UE 220, the NE 230 (eg, a gNB or a TRP of the gNB), the PRU 240, and the LMF 250. For example, the target UE 220 and the PRU 240 may request the NE 230 to provide necessary UL SRS configuration.

[0060] At operation 202, the NE 230 may configure SRS resources for positioning with the target UE 220. Similarly, at operation 203, the NE 230 may configure SRS resources for positioning with the PRU 240.

[0061] At operation 204 , the target UE 220 may transmit the UL SRS resource to the NE 230 , and at operation 205 , the PRU 240 may transmit the UL SRS resource to the NE 230 .

[0062] At operation 206, NE 230 may send a UL SRS configuration configured for UE / PRU SRS transmission to define a specific center frequency identifier configuration to LMF 250. LMF 250 may need to know and be informed whether the UL SRS resource may be configured using a contiguous or non-contiguous set of RBs to define a specific center frequency ID configuration that the TRP may use to obtain UL CP measurements.

[0063] In various example embodiments, LMF 250 may send a center frequency identifier configuration to NE 230, based on which NE 230 may perform one or more UL CP measurements. LMF 250 may send a request to NE 230 to perform the measurement. In certain example embodiments, such as Figure 2 As shown, the request may include a specific center frequency ID. Specifically, at operation 207, LMF 250 may send a request to NE 230 to obtain UL CP measurements using a specific center frequency ID configuration for UL SRS. Specifically, LMF 250 may instruct NE 230 to have a specific center frequency ID configuration for SRS bandwidth, and request NE 230 to obtain UL CP measurements using these center frequency IDs. In some example embodiments, UL CP measurements may be performed at a TRP or gNB using a UL reference signal, such as an SRS dedicated to positioning or an SRS for multiple-input multiple-output (MIMO).

[0064] In certain example embodiments, LMF 250 may provide a pool of center frequency IDs per component carrier (CC) and / or UL bandwidth portion to NE 230. NE 230 may be limited by the capabilities of the network and only be allowed to use these center frequency IDs to obtain CP measurements, where each center frequency ID may be used to obtain a single CP measurement.

[0065] In various example embodiments, LMF 250 may provide NE 230 with the center frequency of the SRS bandwidth and the granularity step size Δ. NE 230 may be limited by the capabilities of the network and may only be allowed to obtain CP measurements using a quantized center frequency determined by fc±nΔ, where fc is the center frequency of the SRS bandwidth and n is the CP measurement ID. Here, Δ may be defined as a subcarrier spacing (SCS) and / or an integer multiple of the SCS. For example, CP measurement #1 may be obtained using a center frequency of fc±1*Δ, and CP measurement #2 may be obtained using a center frequency of fc±2*Δ.

[0066] In certain example embodiments, LMF 250 may provide NE 230 with a pool of center frequency IDs per CC and / or UL bandwidth portion, where NE 230 may obtain multiple CP measurement sets using a single center frequency ID. As an example, when CP measurements are obtained using contiguous RBs of SRS, center frequency ID #1 may be used to obtain CP measurement set #1, which contains CP measurements #1 obtained from SRS resource #1 transmitted by UE X and CP measurements #2 obtained from SRS resource #2 transmitted by UE Y. As another example, when CP measurements are obtained using non-contiguous RBs of SRS, center frequency ID #1 may be used to obtain CP measurement set #1, which contains CP measurements #1 obtained from SRS resources #1,3 transmitted by UE X and CP measurements #2 obtained from SRS resources #2,4 transmitted by UE Y. LMF 250 may obtain RSCPD measurements using only UL CP measurements / measurement sets of different NEs having the same center frequency ID.

[0067] At operation 208, NE 230 may receive SRS transmissions from target UE 220 and PRU 240, obtain CP measurement / measurement set using the above-mentioned center frequency ID indicated by LMF 250, and / or report CP measurement / measurement set and corresponding used center frequency ID to LMF 250 at operation 209.

[0068] NE 230 may use the UL SRS received from target UE 220 and PRU 240 to perform and obtain UL CP measurements / measurement sets using one of the above center frequency IDs provided by LMF 250, and report them to LMF 250 together with the used center frequency ID. The TRP may report a CP measurement set and its associated center frequency ID, where each CP measurement is obtained using a single center frequency ID. In another example, the TRP may report multiple CP measurement sets, where each set is associated with a single center frequency ID.

[0069] In various example embodiments, the TRP may report updated center frequency information of UL CP measurements obtained from UL SRS received from target UE 220 based on UE mobility profiles, subject to the capabilities of the network. For example, if NE 230 is instructed to obtain CP measurements using center frequency fc with ID#1, NE 230 may receive UE SRS transmissions with center frequency fc+fd, where fd is defined as the Doppler compensation calculated by NE 230 based on UE mobility. In this case, NE 230 may update the center frequency information of CP measurements to fc+fd. Therefore, NE 230 may update the center frequency information of UL CP measurements to fc+fd, and report UL CP measurements / (multiple) measurement sets associated with updated center frequency ID#1 and / or fd.

[0070] At operation 210, LMF 250 may use the CP measurements / measurement sets reported by the TRP and their associated center frequency IDs to estimate the location of target UE 220. In various example embodiments, LMF 250 may use CP measurements obtained from PRU SRS transmissions having only center frequencies similar to the center frequencies of CP measurements obtained from UE SRS transmissions.

[0071] In various example embodiments, when the PRU 240 is a road side unit (RSU) or a TRP or the like, the LMF 250 may instruct the PRU 240 to have specific center frequency ID configurations for the SRS bandwidth and may request the PRU 240 to use these center frequency ID configurations to obtain CP measurements / measurement sets for the UL SRS sent from the target UE 220.

[0072] In some example embodiments, PRU 240 may be a network entity. For example, PRU 240 may be an RSU or a TRP. PRU 240 may report the UL SRS configuration(s) used for the above-mentioned SRS transmission(s) to LMF 250 to define the corresponding center frequency ID configuration for UL SRS.

[0073] Figure 3 An example of a signaling diagram 300 depicting a DL CPP UE-based mode is shown. The target UE 320 and the PRU 340 may be similar to the UE 920. The NE 330 (e.g., a gNB, or a TRP of a gNB) and the LMF 350 may be similar to the NE 910, and as shown in FIG. Fig. 9 As shown, according to certain example embodiments.

[0074] At operation 301 , DL CPP may be initiated between a target UE 320 , a NE 330 , a PRU 340 , and a LMF 350 .

[0075] At operation 302 , the LMF 350 may determine a DL PRS configuration within a PFL and a set of specific center frequency IDs within the PFL for CP measurement, and may send the information to the target UE 320 and / or the PRU 340 .

[0076] In some example embodiments, subject to the capabilities of the network, NE 330 may send a PRS configuration for each PRS RB and / or have a PRS configuration for odd / even PRS RBs to the target UE 320 and / or PRU 340. LMF 350 may need to know the PRS configuration used for PRS transmission to the target UE 320 and / or PRU 340 to define a specific center frequency ID configuration that the target UE 320 and / or PRU 340 may use to obtain DL CP measurements. At operations 303 and 304, NE 330 may send DL PRS resources to the target UE 320 and / or PRU 340 accordingly.

[0077] In an example embodiment, LMF 350 may send a request to target UE 320 and / or PRU 340 to perform DL CP measurements. In certain example embodiments, for example Figure 3 In the embodiment shown in , the request may include a specific center frequency ID. Specifically, at operation 305, the LMF 350 may send a specific center frequency ID configuration of the DL PRS PFL to the target UE 320, and may request the target UE 320 to obtain DL CP measurement using the specific center frequency ID configuration.

[0078] In some example embodiments, LMF 350 may send a specific center frequency ID configuration of the DL PRS PFL to PRU 340 and may request PRU 340 to obtain and report DL CP measurements using the specific center frequency ID configuration. In various example embodiments, the UE may perform RSCP measurements from a PRS transmitted from a specific TRP and / or may perform RSCPD measurements from multiple PRSs transmitted from two or more TRPs.

[0079] In some example embodiments, LMF 350 may provide a pool of center frequency IDs for each PFL to target UE 320 and / or PRU 340, wherein target UE 320 and / or PRU 340 is only allowed to use these center frequency IDs to obtain CP measurements within its capabilities, wherein each center frequency ID is used to obtain a single CP measurement. Each center frequency ID may represent the center frequency ID of a portion of a DLPRS PFL.

[0080] In various example embodiments, LMF 350 may provide the center frequency and granularity step size Δ of the DL PRS PFL to the target UE 320 and / or PRU 340, wherein the target UE 320 and / or PRU 340 obtains CP measurements within their capabilities using only the quantized center frequency determined by fc±nΔ, where fc is the center frequency of the DL PRS PFL and n is the CP measurement ID. For example, CP measurement #1 may be obtained using the center frequency fc±1*Δ, and CP measurement #2 may be obtained using the center frequency fc±2*Δ. Here, Δ may be defined as an SCS and / or an integer multiple of an SCS.

[0081] At operation 306 , the PRU 340 may obtain CP measurements / measurement sets for multiple TRPs and, at operation 307 , may report them and the associated center frequency IDs to the LMF 350 .

[0082] At operation 308, the LMF 350 may forward the reported PRU CP measurement / measurement set(s) to the target UE 320 along with the corresponding center frequency ID.

[0083] At operation 309, the LMF 350 may instruct the target UE 320 to create a double differential CP measurement using a PRU CP measurement with a specific center frequency ID(s). For example, the LMF 350 may instruct the target UE 320 to use a PRU CP measurement with the same center frequency ID(s) as the center frequency ID(s) of the DL CP measurement performed by the UE, or a PRU CP measurement separated from the center frequency ID(s) of the DL CP measurement performed by the UE using a specific threshold, which may be defined or configured by the LMF 350 based on a UE mobility profile or the like. The LMF 350 may indicate a CP technique (e.g., UE assisted or UE based).

[0084] At operation 310 , the target UE 320 may estimate its position using double differential CP measurements, the known location of the TRP, and the PRU 340 .

[0085] In certain example embodiments, the LMF may transmit a center frequency ID pool to the target UE 320 and / or the PRU 340, wherein the target UE 320 and / or the PRU 340 may obtain a CP measurement set using a certain frequency ID. When the CP measurement is obtained using contiguous RBs of the PRS, the center frequency ID #1 may be used to obtain a CP measurement set #1, which includes a CP measurement #1 obtained from a PRS resource #1 transmitted by TRP X, and a CP measurement #2 obtained from a PRS resource #2 transmitted by TRP Y, wherein the PRS resource #1 and the PRS resource #2 belong to the same PFL. As another example, when the CP measurement is obtained using non-contiguous RBs of the PRS, the center frequency ID #1 may be used to obtain a CP measurement set #1, which includes a CP measurement #1 obtained from a PRS RB #{1 and 3} transmitted by TRP X, and a CP measurement #2 obtained from a PRS RB #{2 and 4} transmitted by TRP Y. The PRS resources #{1, 2, 3, and 4} may be located in the same PFL. The target UE 320 and / or PRU 340 may use different configurations of (multiple) PRS resources / (multiple) resource sets, subject to their capabilities, with each PFL reporting multiple or single CP measurements. In this case, the target UE 320 and / or PRU 340 may report different CP measurements / measurement sets, and each measurement / measurement set is associated with the (multiple) corresponding center frequency IDs of the (multiple) PRS resources / (multiple) resource sets used to obtain these measurements / measurement sets. The LMF 350 may also provide the target UE 320 and PRU 340 with assistance data for positioning including PRS configuration information.

[0086] Figure 4 An example of a signaling diagram 400 depicting a DL CPP UE assisted mode is shown. The target UE 410 and the PRU 430 may be similar to the UE 920. The NE 420 (e.g., a gNB, or a TRP of a gNB) and the LMF 440 may be similar to the NE 910, and as shown in FIG. Fig. 9 As shown, according to certain example embodiments.

[0087] Operations 401 to 407 may be similar to operations 301 to 307 described above, except that at 405 , the LMF 440 may request the target UE 410 to report CP measurements performed by the target UE 410 .

[0088] At operation 408, the target UE 410 and the PRU 430 may obtain DL CP measurements / (multiple) measurement sets and report them to the LMF 440 along with the corresponding center frequency IDs. The target UE 410 may be subject to its capabilities and report updated center frequency information for DL ​​CP measurements based on its mobility profile. For example, if the target UE 410 is instructed to obtain CP measurements using a center frequency fc with ID#1, the target UE 410 may receive DL PRS resources at a center frequency fc+fd, where fd is defined as the Doppler compensation calculated by the target UE 410 based on its mobility profile. Therefore, the target UE 410 may update the center frequency information for CP measurements based on the center frequency ID#1 and fd, where the center frequency ID#1 corresponds to the center frequency fc, and the updated center frequency for CP measurements is given by fc+fd.

[0089] At operation 409, the LMF 440 may use the DL CP measurements / measurement sets received from the target UE 410 and / or PRU 430 with the same (multiple) center frequency IDs to calculate double differential measurements and estimate the position of the target UE 410. For example, the LMF 440 may need to cancel received DL CP measurements / (multiple) measurement sets provided by the PRU that have different center frequency IDs than those associated with the target DL CP measurements / (multiple) measurement sets provided by the UE.

[0090] Figure 5 It is shown that according to various example embodiments, a LMF (similar to Fig. 9 An example of a flowchart of method 500 performed by NE 910) shown in FIG.

[0091] At step 501, the method may include sending a request by the LMF to at least one of a network entity or a UE to obtain at least one CP measurement using at least one center frequency identifier configuration for at least one PRS, wherein the at least one PRS includes at least one UL SRS or DL ​​PRS.

[0092] In certain example embodiments, the method may also include receiving, by the LMF, at least one UL SRS configuration configured for at least one of the UE or positioning reference unit SRS transmissions from a network entity; determining, by the LMF, at least one center frequency identifier configuration for at least one UL SRS; sending, by the LMF, the determined at least one center frequency identifier configuration to the network entity; receiving, by the LMF, from the network entity, at least one CP measurement associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration and at least one associated center frequency identifier; and estimating, by the LMF, the position of the UE using the at least one CP measurement and the at least one associated center frequency identifier.

[0093] In some example embodiments, the method may also include determining, by the LMF, a DL PRS configuration within the PFL and at least one center frequency identifier configuration for the DL PRS, the at least one center frequency identifier configuration including a set of center frequency identifiers within the PFL for CP measurement; and sending, by the LMF, the determined at least one center frequency identifier configuration to the UE or PRU to obtain one or more CP measurements based on the at least one center frequency ID configuration.

[0094] In various example embodiments, the method may further include receiving, by the LMF, from the positioning reference unit, one or more CP measurements performed by the positioning reference unit associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration, and at least one associated center frequency identifier.

[0095] In certain example embodiments, the method may further include sending, by the LMF to the UE, one or more CP measurements received from the positioning reference unit and the associated at least one center frequency identifier.

[0096] In some example embodiments, the method may further include sending, by the LMF, an instruction to the UE to create at least one double differential CP measurement using one or more CP measurements obtained from the positioning reference unit and the associated at least one center frequency identifier.

[0097] In various example embodiments, the method may also include receiving, by the LMF from the UE, one or more CP measurements performed by the UE and associated with at least one center frequency identifier configured by at least one center frequency identifier configuration, and the associated at least one center frequency identifier; and estimating, by the LMF, the position of the UE based on at least one or more CP measurements of the UE and at least one or more CP measurements of the positioning reference unit and their associated center frequency identifiers.

[0098] Figure 6 1 and 2 according to various exemplary embodiments. Fig. 9 An example of a flowchart of a method 600 performed by a UE 920) shown in FIG.

[0099] At step 601, the method may include receiving, by a UE, at least one center frequency identifier configuration for a DL PRS within a PFL.

[0100] At step 602, the method may also include receiving, by the UE, a request to perform CP measurement based on at least one center frequency identifier configuration.

[0101] In certain example embodiments, the method may further include performing, by the UE, at least one CP measurement associated with at least one center frequency ID configured by the at least one center frequency identifier configuration.

[0102] In some example embodiments, the method may further include providing, by the UE to the LMF, at least one CP measurement and at least one center frequency identifier associated with the at least one CP measurement.

[0103] In various example embodiments, the method may further include receiving, by the UE from the LMF, one or more CP measurements of the PRU and at least one center frequency ID associated with the one or more CP measurements of the PRU.

[0104] In certain example embodiments, the method may further include receiving, by the UE from the LMF, an instruction to create at least one double differential CP measurement using one or more CP measurements of the PRU and the associated at least one center frequency ID.

[0105] In some example embodiments, the method may further include estimating, by the UE, its position using at least one of the at least one CP measurement obtained by the UE or one or more CP measurements obtained by the PRU and their associated center frequency ID(s).

[0106] Figure 7 It shows that a NE (such as Fig. 9 An example of a flowchart of method 700 performed by NE 910) shown in FIG.

[0107] At step 701, the method may include sending, by a network entity to a LMF, a UL SRS configuration configured for at least one of a UE or a PRU UL SRS transmission.

[0108] At step 702, the method may further include receiving, by the network entity from the LMF, at least one center frequency identifier configuration for the UL SRS.

[0109] At step 703, the method may further include receiving, by the network entity from the LMF, a request to obtain one or more CP measurements based on at least one center frequency identifier configuration.

[0110] At step 704, the method may further include performing one or more CP measurements associated with at least one center frequency ID configured by the at least one center frequency identifier configuration for the UL SRS.

[0111] At step 705, the method may further include sending, by the network entity, the one or more measurements and the associated at least one center frequency ID to the LMF.

[0112] In certain example embodiments, the network entity may include a gNB, a transmission reception point (TRP), or a PRU operating as a road side unit (RSU) or a TRP.

[0113] Figure 8 It is shown that a PRU (e.g. Fig. 9 An example of a flowchart of a method 800 performed by a UE 920) shown in FIG.

[0114] At step 801, the method may include receiving, by a positioning reference unit from a LMF, at least one center frequency identifier configuration for a DL PRS within a PFL.

[0115] At step 802, the method may also include receiving, by the positioning reference unit, a request to perform CP measurements based on at least one center frequency identifier configuration.

[0116] At step 803, the method may further include performing, by the positioning reference unit, at least one CP measurement associated with at least one center frequency ID configured by the at least one center frequency identifier configuration.

[0117] At step 804, the method may also include sending, by the positioning reference unit to the LMF, a report regarding at least one CP measurement and at least one center frequency ID associated with the at least one CP measurement.

[0118] Fig. 9 An example of a system according to certain example embodiments is shown. In an example embodiment, a system may include a plurality of devices, such as, for example, a NE 910 and / or a UE 920 .

[0119] NE 910 may be one or more of a base station (e.g., a 3G UMTS NodeB, a 4G LTE Evolution NodeB, or a 5G NR Next Generation NodeB), a serving gateway, a server, and / or any other access node, or a combination thereof.

[0120] The NE 910 may also include at least one gNB centralized unit (CU), which may be associated with at least one gNB distributed unit (DU). The at least one gNB-CU and at least one gNB-DU may communicate via at least one F1 interface, at least one Xn-C interface, and / or via at least one NG interface of a fifth generation core (5GC).

[0121] UE 920 may include one or more mobile devices, such as mobile phones, smart phones, personal digital assistants (PDAs), tablet computers or portable media players, digital cameras, camcorders, video game consoles, navigation units (e.g., global positioning system (GPS) devices), desktop or laptop computers, single location devices (such as sensors or smart meters), or any combination thereof. In addition, NE 910 and / or UE 920 may be one or more Citizen Broadband Radio Service Devices (CBSDs).

[0122] NE 910 and / or UE 920 may include at least one processor, indicated as 911 and 921, respectively. Processors 911 and 921 may be embodied by any computing or data processing device, such as a central processing unit (CPU), an application specific integrated circuit (ASIC), or the like. The processor may be implemented as a single controller, or multiple controllers or processors.

[0123] At least one memory may be provided in one or more devices, as shown in 912 and 922. The memory may be fixed or removable. The memory may include computer program instructions or computer codes contained therein. The memories 912 and 922 may independently be any suitable storage device, such as a non-transient computer-readable medium. The term "non-transient" used herein may correspond to the limitations of the medium itself (i.e., tangible, rather than a signal), rather than the limitations of data storage persistence (e.g., random access memory (RAM) versus read-only memory (ROM)). A hard disk drive (HDD), random access memory (RAM), flash memory, or other suitable memory may be used. The memory may be combined on a single integrated circuit as a processor, or may be separated from one or more processors. In addition, the computer program instructions stored in the memory and that can be processed by the processor may be computer program codes in any suitable form, for example, a compiled or interpreted computer program written in any suitable programming language.

[0124] Processors 911 and 921, memories 912 and 922, and any subset thereof may be configured to provide Figures 2 to 8Components corresponding to the various blocks. Although not shown, the device may also include positioning hardware, such as GPS or micro-electromechanical system (MEMS) hardware, which can be used to determine the location of the device. Other sensors are also allowed and can be configured to determine location, altitude, speed, direction, etc., such as a barometer, compass, etc.

[0125] like Fig. 9 As shown, transceivers 913 and 923 may be provided, and one or more devices may also include at least one antenna, shown as 914 and 924, respectively. The device may have many antennas, such as an antenna array configured for MIMO communication, or multiple antennas for multiple RATs. For example, other configurations of these devices may be provided. Transceivers 913 and 923 may be transmitters, receivers, both transmitters and receivers, or units or devices that may be configured for transmission and reception.

[0126] The memory and the computer program instructions may be configured together with a processor for a specific device to cause a hardware device (such as a UE) to perform any of the above processes (ie, Figures 2 to 8 ). Thus, in some example embodiments, a non-transitory computer-readable medium may be encoded with computer instructions that, when executed in hardware, perform a process such as one of the processes described herein. Alternatively, some example embodiments may be implemented entirely in hardware.

[0127] In certain example embodiments, the apparatus may include a Figures 2 to 8In this application, the term "circuitry" may refer to one or more or all of the following: (a) a hardware circuit implementation only (such as, implemented only in analog and / or digital circuitry); (b) a combination of hardware circuitry and software, such as (as applicable): (i) a combination of (multiple) analog and / or digital hardware circuits and software / firmware and (ii) any portion of (multiple) hardware processors (including (multiple) digital signal processors), software and (multiple) memories with software (which work together to enable a device (such as a mobile phone or server) to perform various functions); and (c) (multiple) hardware circuits and / or (multiple) processors (such as (multiple) microprocessors or portions of (multiple) microprocessors) ) that requires software (e.g., firmware) to operate, but the software may not be present when the operation does not require the software. This definition of circuitry applies to all uses of the term in this application, including in any claims. As a further example, as used in this application, the term "circuitry" also covers an implementation of merely a hardware circuit or processor (or multiple processors) or a portion of a hardware circuit or processor and its (or their) accompanying software and / or firmware. The term "circuitry" also covers, for example, a baseband integrated circuit or processor integrated circuit for a mobile device or a similar integrated circuit in a server, cellular network device, or other computing or network device, if applicable to the particular claim element.

[0128] Fig.10 An example of a 5G network and system architecture according to certain example embodiments is shown. Multiple network functions are shown that can be implemented as software operating as part of a network device or dedicated hardware, as a network device itself or dedicated hardware, or as virtual functions operating as a network device or dedicated hardware. Fig.10 The NEs and UEs shown in the figure may be similar to NE 910 and UE 920, respectively. The user plane function (UPF) may provide services such as intra-RAT and inter-RAT mobility, routing and forwarding of data packets, inspection of packets, user plane quality of service (QoS) processing, buffering of DL packets and / or triggering of DL data notifications. The application function (AF) may mainly interface with the core network to facilitate application use of traffic routing and interact with the policy framework.

[0129] According to some example embodiments, processors 911 and 921 and memories 912 and 922 may be included in a processing circuit system or a control circuit system or may form a part of a processing circuit system or a control circuit system. In addition, in some example embodiments, transceivers 913 and 923 may be included in a transceiver circuit system or may form a part of a transceiver circuit system.

[0130] In some example embodiments, an apparatus (e.g., NE 910 and / or UE 920) may include a component for performing a method, process, or any variant discussed herein. Examples of the component may include one or more processors, memories, controllers, transmitters, receivers, and / or computer program codes for causing the execution of operations.

[0131] In various example embodiments, the apparatus 910 may be controlled by the memory 912 and the processor 911 to send a request to at least one of a network entity or a UE to obtain at least one CP measurement using at least one center frequency identifier configuration for at least one PRS, wherein the at least one PRS includes at least one UL SRS or DL ​​PRS.

[0132] Certain example embodiments may be directed to an apparatus comprising means for performing any of the methods described herein, including, for example, means for sending a request to at least one of a network entity or a UE to obtain at least one CP measurement using at least one center frequency identifier configuration for at least one PRS, wherein the at least one PRS comprises at least one UL SRS or DL ​​PRS.

[0133] In various example embodiments, the apparatus 920 may be controlled by the memory 922 and the processor 921 to receive at least one center frequency identifier configuration for a DL PRS within a PFL; and receive a request to perform CP measurement based on the at least one center frequency identifier configuration.

[0134] Certain example embodiments may be directed to an apparatus comprising means for performing any of the methods described herein, including, for example, means for receiving at least one center frequency identifier configuration for a DL PRS within a PFL; and means for receiving a request to perform CP measurements based on the at least one center frequency identifier configuration.

[0135] In various example embodiments, the device 910 can be controlled by the memory 912 and the processor 911 to send a UL SRS configuration configured for at least one of the UE or PRU UL SRS transmissions to the LMF; receive at least one center frequency identifier configuration for the UL SRS from the LMF; receive a request to obtain one or more CP measurements based on the at least one center frequency identifier configuration from the LMF; perform one or more CP measurements associated with at least one center frequency ID configured by the at least one center frequency identifier configuration for the UL SRS; and send one or more measurement results and the associated at least one center frequency ID to the LMF.

[0136] Certain example embodiments may be directed to an apparatus comprising components for performing any of the methods described herein, including, for example, components for sending a UL SRS configuration configured for at least one of a UE or PRU UL SRS transmission to an LMF; receiving at least one center frequency identifier configuration for the UL SRS from the LMF; receiving a request from the LMF to obtain one or more CP measurement results based on the at least one center frequency identifier configuration; performing one or more CP measurements associated with at least one center frequency ID configured by the at least one center frequency identifier configuration for the UL SRS; and sending the one or more measurement results and the associated at least one center frequency ID to the LMF.

[0137] In various example embodiments, the device 920 can be controlled by the memory 922 and the processor 921 to receive at least one center frequency identifier configuration for a DL PRS within a PFL from the LMF; receive a request to perform a CP measurement based on the at least one center frequency identifier configuration; perform at least one CP measurement associated with at least one center frequency ID configured by the at least one center frequency identifier configuration; and send a report to the LMF regarding the at least one CP measurement and at least one center frequency ID associated with the at least one CP measurement.

[0138] Certain example embodiments may be directed to an apparatus comprising components for performing any of the methods described herein, including, for example, components for receiving from an LMF at least one center frequency identifier configuration for a DL PRS within a PFL; components for receiving a request to perform a CP measurement based on the at least one center frequency identifier configuration; components for performing at least one CP measurement associated with at least one center frequency ID configured by the at least one center frequency identifier configuration; and components for sending to the LMF a report regarding the at least one CP measurement and the at least one center frequency ID associated with the at least one CP measurement.

[0139] The features, structures or characteristics of the example embodiments described in this specification may be combined in one or more example embodiments in any suitable manner. For example, the use of the phrases "various embodiments", "certain embodiments", "some embodiments" or other similar language in this specification means that a specific feature, structure or characteristic described in connection with the example embodiments may be included in at least one example embodiment. Therefore, the phrases "in various embodiments", "certain embodiments", "in some embodiments" or other similar language appearing in this specification do not necessarily all refer to the same set of example embodiments, and the features, structures or characteristics may be combined in one or more example embodiments in any suitable manner.

[0140] As used herein, “at least one of: ” and “at least one of ” and similar expressions, where a list of two or more elements is connected by “and” or “or”, mean at least any one element, or at least any two or more elements, or at least all the elements.

[0141] In addition, if necessary, the above-mentioned different functions or processes can be performed in different orders and / or concurrently with each other. In addition, if necessary, one or more of the functions or processes can be optional or can be combined. Therefore, the above description should be regarded as an explanation of the principles and teachings of certain example embodiments, rather than a limitation thereof.

[0142] Those skilled in the art will readily appreciate that the above exemplary embodiments may be practiced with processes in a different order and / or hardware elements that are different from the disclosed configurations. Therefore, although some embodiments have been described based on these exemplary embodiments, certain modifications, variations, and alternative configurations will be apparent to those skilled in the art while still being within the spirit and scope of the exemplary embodiments.

[0143] Partial Glossary

[0144] 3GPP Third Generation Partnership Project

[0145] 5G Fifth Generation

[0146] 5GC Fifth Generation Core

[0147] 6G Sixth Generation

[0148] AF Application Function

[0149] AMF Access and Mobility Management Function

[0150] ASIC Application-Specific Integrated Circuit

[0151] CBSD Citizens Broadband Radio Service Device

[0152] CC Component Carrier

[0153] CP Carrier Phase

[0154] CPP Carrier Phase Positioning

[0155] CPU Central Processing Unit

[0156] CU Centralized Unit

[0157] DL Downlink

[0158] DU Distributed Unit

[0159] eMBB Enhanced Mobile Broadband

[0160] eNB Evolved Node B

[0161] gNB Next Generation Node B

[0162] GPS Global Positioning System

[0163] HDD Hard Drive

[0164] IoT

[0165] LMF Location Management Function

[0166] LTE Long Term Evolution

[0167] LTE-A Long Term Evolution Advanced

[0168] MEMS Micro-Electro-Mechanical Systems

[0169] MIMO Multiple Input Multiple Output

[0170] mMTC massive machine type communication

[0171] NE Network Entity

[0172] NG Next Generation

[0173] NG-eNB Next Generation Evolved Node B

[0174] NG-RAN Next Generation Radio Access Network

[0175] NR New Radio

[0176] NR-U New Radio Unlicensed

[0177] PDA Personal Digital Assistant

[0178] PFL Positioning Frequency Layer

[0179] PRS Positioning Reference Signal

[0180] PRU Positioning Reference Unit

[0181] QoS Quality of Service

[0182] RAM Random Access Memory

[0183] RAN Radio Access Network

[0184] RAT Radio Access Technology

[0185] RB Resource Block

[0186] RF

[0187] ROM Read Only Memory

[0188] RRC Radio Resource Control

[0189] RRM Radio Resource Management

[0190] RRU Remote Radio Unit

[0191] RS reference signal

[0192] RSCP Reference Signal Carrier Phase

[0193] RSCPD Reference Signal Carrier Phase Difference

[0194] RSU Roadside Unit

[0195] RSTD Reference Signal Time Difference

[0196] RTOA Relative time of arrival

[0197] SCS Subcarrier Spacing

[0198] SRS Sounding Reference Signal

[0199] TDOA Time Difference of Arrival

[0200] TRP Transmission Reception Point

[0201] UE User Equipment

[0202] UL Uplink

[0203] UMTS Universal Mobile Telecommunications System

[0204] UPF User Plane Function

[0205] URLLC Ultra-Reliable and Low-Latency Communications

[0206] UTRAN Universal Mobile Telecommunications System Terrestrial Radio Access Network

[0207] Example 1. A method for communication, comprising:

[0208] A request is sent by a location management function to at least one of the following items to obtain at least one carrier phase measurement using at least one center frequency identifier configuration for at least one positioning reference signal: a network entity, or a user equipment, wherein the at least one positioning reference signal includes: at least one uplink sounding reference signal or a downlink positioning reference signal.

[0209] Example 2. The method according to Example 1 further includes:

[0210] receiving, by the location management function, at least one uplink sounding reference signal configuration from the network entity, the at least one uplink sounding reference signal configuration being configured for at least one of: user equipment, or positioning reference unit sounding reference signal transmission;

[0211] determining, by the location management function, the at least one center frequency identifier configuration for the at least one uplink sounding reference signal;

[0212] sending, by the location management function, the determined at least one center frequency identifier configuration to the network entity;

[0213] receiving, by the location management function, from the network entity at least one carrier phase measurement, and the at least one associated center frequency identifier, the at least one carrier phase measurement being associated with the at least one center frequency identifier configured by the at least one center frequency identifier configuration; and

[0214] The location of the user equipment is estimated by the location management function using the at least one carrier phase measurement and the at least one associated centre frequency identifier.

[0215] Example 3. The method according to Example 1 further includes:

[0216] Determining, by the location management function, a downlink positioning reference signal configuration within a positioning frequency layer, and the at least one center frequency identifier configuration for the downlink positioning reference signal, the at least one center frequency identifier configuration comprising: a set of center frequency identifiers within the positioning frequency layer for carrier phase measurement; and

[0217] The determined at least one center frequency identifier configuration is sent by the location management function to a user equipment or a positioning reference unit to obtain one or more carrier phase measurements based on the at least one center frequency identifier configuration.

[0218] Example 4. The method according to Example 3 further includes:

[0219] The one or more carrier phase measurements performed by the positioning reference unit and the at least one associated center frequency identifier are received by the location management function from the positioning reference unit, the one or more carrier phase measurements being associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration.

[0220] Example 5. The method according to Example 4 further includes:

[0221] The one or more carrier phase measurements received from the positioning reference unit and the associated at least one center frequency identifier are sent by the location management function to the user equipment.

[0222] Example 6. The method according to Example 5, further comprising:

[0223] An instruction is sent by a location management function to the user equipment to create at least one double difference carrier phase measurement using the one or more carrier phase measurements obtained from the positioning reference unit with the associated at least one centre frequency identifier.

[0224] Example 7. The method according to Example 4, further comprising:

[0225] receiving, by the location management function, from the user equipment, the one or more carrier phase measurements performed by the user equipment, and the associated at least one center frequency identifier, the one or more carrier phase measurements being associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration; and

[0226] The position of the user equipment is estimated by the position management function based at least on the one or more carrier phase measurements of the user equipment and the at least one or more carrier phase measurements of the positioning reference unit and their associated centre frequency identifiers.

[0227] Example 8. A method for communication, comprising:

[0228] receiving, by a user equipment, at least one center frequency identifier configuration for a downlink positioning reference signal within a positioning frequency layer; and

[0229] A request is received by the user equipment to perform carrier phase measurements based on the at least one center frequency identifier configuration.

[0230] Example 9. The method according to Example 8, further comprising:

[0231] At least one carrier phase measurement is performed by the user equipment, the at least one carrier phase measurement being associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration.

[0232] Example 10. The method according to Example 9, further comprising:

[0233] The at least one carrier phase measurement and the at least one center frequency identifier associated with the at least one carrier phase measurement are provided by the user equipment to a location management function.

[0234] Example 11. The method according to Example 9, further comprising:

[0235] One or more carrier phase measurements of a positioning reference unit and at least one center frequency identifier associated with the one or more carrier phase measurements of the positioning reference unit are received by the user equipment from a location management function.

[0236] Example 12. The method according to Example 11, further comprising:

[0237] An instruction is received by the user equipment from a location management function to create at least one double difference carrier phase measurement using the one or more carrier phase measurements of the positioning reference unit and the associated at least one centre frequency identifier.

[0238] Example 13. The method according to any one of Examples 8 to 12, further comprising:

[0239] The position of the user equipment is estimated by the user equipment using at least one of: the at least one carrier phase measurement obtained by the user equipment or one or more carrier phase measurements obtained by a positioning reference unit and their associated centre frequency identifiers.

[0240] Example 14. A method for communication, comprising:

[0241] Sending, by a network entity to a location management function, an uplink sounding reference signal configuration configured for at least one of: user equipment, or positioning reference unit uplink sounding reference signal transmission;

[0242] receiving, by the network entity from the location management function, at least one center frequency identifier configuration for an uplink sounding reference signal;

[0243] receiving, by the network entity from the location management function, a request to obtain one or more carrier phase measurements based on the at least one center frequency identifier configuration;

[0244] performing one or more carrier phase measurements associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration for the uplink sounding reference signal; and

[0245] The one or more measurements and the associated at least one center frequency identifier are sent by the network entity to the location management function.

[0246] Example 15. The method of Example 14, wherein the network entity comprises: a network entity, a transmission reception point, or a positioning reference unit operating as a roadside unit or a transmission reception point.

[0247] Example 16. A method for communication, comprising:

[0248] receiving, by a positioning reference unit from a location management function, at least one center frequency identifier configuration for a downlink positioning reference signal within a positioning frequency layer;

[0249] receiving, by the positioning reference unit, a request to perform carrier phase measurements based on the at least one center frequency identifier configuration;

[0250] performing, by the positioning reference unit, at least one carrier phase measurement associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration; and

[0251] A report is sent by the positioning reference unit to the location management function regarding the at least one carrier phase measurement and the associated at least one center frequency identifier for the at least one carrier phase measurement.

[0252] Example 17. An apparatus for communication, comprising:

[0253] at least one processor; and

[0254] at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least:

[0255] Sending a request to at least one of the following items to obtain at least one carrier phase measurement using at least one center frequency identifier configuration for at least one positioning reference signal: a network entity, or a user equipment, wherein the at least one positioning reference signal includes: at least one uplink sounding reference signal or a downlink positioning reference signal.

[0256] Example 18. The apparatus of Example 17, wherein the instructions, when executed by the at least one processor, further cause the apparatus to at least:

[0257] receiving at least one uplink sounding reference signal configuration from the network entity, the at least one uplink sounding reference signal configuration being configured for at least one of: user equipment, or positioning reference unit sounding reference signal transmission;

[0258] determining the at least one center frequency identifier configuration for the at least one uplink sounding reference signal;

[0259] sending the determined at least one center frequency identifier configuration to the network entity;

[0260] receiving, from the network entity, at least one carrier phase measurement, and the at least one associated center frequency identifier, the at least one carrier phase measurement being associated with the at least one center frequency identifier configured by the at least one center frequency identifier configuration; and

[0261] The position of the user equipment is estimated using the at least one carrier phase measurement and the at least one associated center frequency identifier.

[0262] Example 19. The apparatus of Example 17, wherein the instructions, when executed by the at least one processor, further cause the apparatus to at least:

[0263] Determining a downlink positioning reference signal configuration within a positioning frequency layer, and the at least one center frequency identifier configuration for the downlink positioning reference signal, the at least one center frequency identifier configuration comprising: a set of center frequency identifiers within the positioning frequency layer for carrier phase measurement;

[0264] The determined at least one center frequency identifier configuration is sent to a user equipment or a positioning reference unit to obtain one or more carrier phase measurements based on the at least one center frequency identifier configuration.

[0265] Example 20. The apparatus of Example 19, wherein the instructions, when executed by the at least one processor, further cause the apparatus to at least:

[0266] The one or more carrier phase measurements performed by the positioning reference unit and the at least one associated center frequency identifier are received from the positioning reference unit, the one or more carrier phase measurements being associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration.

[0267] Example 21. The apparatus of Example 20, wherein the instructions, when executed by the at least one processor, further cause the apparatus to at least:

[0268] The one or more carrier phase measurements received from the positioning reference unit and the associated at least one center frequency identifier are sent to the user equipment.

[0269] Example 22. The apparatus of Example 21, wherein the instructions, when executed by the at least one processor, further cause the apparatus to at least:

[0270] Instructions are sent to the user equipment to create at least one double difference carrier phase measurement using the one or more carrier phase measurements obtained from the positioning reference unit with the associated at least one center frequency identifier.

[0271] Example 23. The apparatus of Example 20, wherein the instructions, when executed by the at least one processor, further cause the apparatus to at least:

[0272] receiving, from the user equipment, the one or more carrier phase measurements performed by the user equipment, and the associated at least one center frequency identifier, the one or more carrier phase measurements being associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration; and

[0273] The position of the user equipment is estimated based at least on the one or more carrier phase measurements of the user equipment and the at least one or more carrier phase measurements of the positioning reference unit and their associated center frequency identifiers.

[0274] Example 24. An apparatus for communication, comprising:

[0275] at least one processor; and

[0276] at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least:

[0277] receiving at least one center frequency identifier configuration for a downlink positioning reference signal within a positioning frequency layer; and

[0278] A request is received to perform carrier phase measurements based on the at least one center frequency identifier configuration.

[0279] Example 25. The apparatus of Example 24, wherein the instructions, when executed by the at least one processor, further cause the apparatus to at least:

[0280] At least one carrier phase measurement is performed, the at least one carrier phase measurement associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration.

[0281] Example 26. The apparatus of Example 25, wherein the instructions, when executed by the at least one processor, further cause the apparatus to at least:

[0282] The at least one carrier phase measurement and the at least one center frequency identifier associated with the at least one carrier phase measurement are provided to a location management function.

[0283] Example 27. The apparatus of Example 25, wherein the instructions, when executed by the at least one processor, further cause the apparatus to at least:

[0284] One or more carrier phase measurements of a positioning reference unit and at least one center frequency identifier associated with the one or more carrier phase measurements of the positioning reference unit are received from a location management function.

[0285] Example 28. The apparatus of Example 27, wherein the instructions, when executed by the at least one processor, further cause the apparatus to at least:

[0286] An instruction is received from a position management function to create at least one double difference carrier phase measurement using the one or more carrier phase measurements of the positioning reference unit and the associated at least one center frequency identifier.

[0287] Example 29. The apparatus of any one of Examples 24 to 28, wherein the instructions, when executed by the at least one processor, further cause the apparatus to at least:

[0288] The position of the apparatus is estimated using at least one of: the at least one carrier phase measurement obtained by the user equipment or one or more carrier phase measurements obtained by a positioning reference unit, and their associated center frequency identifiers.

[0289] Example 30. An apparatus for communication, comprising:

[0290] at least one processor; and

[0291] at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least:

[0292] sending, to a location management function, an uplink sounding reference signal configuration configured for at least one of: a user equipment, or a positioning reference unit uplink sounding reference signal transmission;

[0293] receiving from the location management function at least one center frequency identifier configuration for an uplink sounding reference signal;

[0294] receiving, from the location management function, a request to obtain one or more carrier phase measurements based on the at least one center frequency identifier configuration;

[0295] performing one or more carrier phase measurements associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration for the uplink sounding reference signal; and

[0296] The one or more measurements and the associated at least one center frequency identifier are sent to the location management function.

[0297] Example 31. An apparatus according to Example 30, wherein the apparatus comprises: a network entity, a transmission reception point, or a positioning reference unit operating as a roadside unit or a transmission reception point.

[0298] Example 32. An apparatus for communication, comprising:

[0299] at least one processor; and

[0300] at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least:

[0301] receiving, from a location management function, at least one center frequency identifier configuration for a downlink positioning reference signal within a positioning frequency layer;

[0302] receiving, by the positioning reference unit, a request to perform carrier phase measurements based on the at least one center frequency identifier configuration;

[0303] performing at least one carrier phase measurement associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration; and

[0304] A report is sent to the location management function regarding the at least one carrier phase measurement and the associated at least one center frequency identifier for the at least one carrier phase measurement.

[0305] Example 33. An apparatus for communication, comprising:

[0306] A component for sending a request to at least one of the following items to obtain at least one carrier phase measurement using at least one center frequency identifier configuration for at least one positioning reference signal, wherein the at least one positioning reference signal includes: at least one uplink sounding reference signal or a downlink positioning reference signal.

[0307] Example 34. The apparatus of Example 33, further comprising:

[0308] means for receiving at least one uplink sounding reference signal configuration from the network entity, the at least one uplink sounding reference signal configuration being configured for at least one of: user equipment, or positioning reference unit sounding reference signal transmission;

[0309] means for determining said at least one center frequency identifier configuration for said at least one uplink sounding reference signal;

[0310] means for sending the determined at least one center frequency identifier configuration to the network entity;

[0311] means for receiving, from the network entity, at least one carrier phase measurement, and the at least one associated center frequency identifier, the at least one carrier phase measurement being associated with the at least one center frequency identifier configured by the at least one center frequency identifier configuration; and

[0312] Means for estimating the position of the user equipment using the at least one carrier phase measurement and the at least one associated center frequency identifier.

[0313] Example 35. The apparatus of Example 33, further comprising:

[0314] means for determining a downlink positioning reference signal configuration within a positioning frequency layer, and the at least one center frequency identifier configuration for the downlink positioning reference signal, the at least one center frequency identifier configuration comprising: a set of center frequency identifiers within the positioning frequency layer for carrier phase measurements;

[0315] Means for transmitting the determined at least one center frequency identifier configuration to a user equipment or a positioning reference unit to obtain one or more carrier phase measurements based on the at least one center frequency identifier configuration.

[0316] Example 36. The apparatus of Example 35, further comprising:

[0317] Means for receiving from the positioning reference unit the one or more carrier phase measurements performed by the positioning reference unit and the at least one associated center frequency identifier, the one or more carrier phase measurements being associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration.

[0318] Example 37. The apparatus of Example 36, further comprising:

[0319] Means for transmitting the one or more carrier phase measurements received from the positioning reference unit and the associated at least one center frequency identifier to the user equipment.

[0320] Example 38. The apparatus of Example 37, further comprising:

[0321] Means for sending an instruction to the user equipment to create at least one double difference carrier phase measurement using the one or more carrier phase measurements obtained from the positioning reference unit with the associated at least one center frequency identifier.

[0322] Example 39. The apparatus of Example 36, further comprising:

[0323] means for receiving from the user equipment the one or more carrier phase measurements performed by the user equipment and the associated at least one center frequency identifier, the one or more carrier phase measurements being associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration; and

[0324] Means for estimating the position of the user equipment based at least on the one or more carrier phase measurements of the user equipment and the at least one or more carrier phase measurements of the positioning reference unit and their associated center frequency identifiers.

[0325] Example 40. An apparatus for communication, comprising:

[0326] means for receiving at least one center frequency identifier configuration for a downlink positioning reference signal within a positioning frequency layer; and

[0327] Means for receiving a request to perform carrier phase measurements based on the at least one center frequency identifier configuration.

[0328] Example 41. The apparatus of Example 40, further comprising:

[0329] Means for performing at least one carrier phase measurement associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration.

[0330] Example 42. The apparatus of Example 41, further comprising:

[0331] Means for providing the at least one carrier phase measurement and the at least one center frequency identifier associated with the at least one carrier phase measurement to a location management function.

[0332] Example 43. The apparatus of Example 41, further comprising:

[0333] Means for receiving, from a location management function, one or more carrier phase measurements of a positioning reference unit and at least one center frequency identifier associated with the one or more carrier phase measurements of the positioning reference unit.

[0334] Example 44. The apparatus of Example 43, further comprising:

[0335] Means for receiving an instruction from a position management function to create at least one double difference carrier phase measurement using the one or more carrier phase measurements of the positioning reference unit and the associated at least one center frequency identifier.

[0336] Example 45. The apparatus of any one of Examples 40 to 44, further comprising:

[0337] Means for estimating the position of the apparatus using at least one of: the at least one carrier phase measurement obtained by the user equipment or one or more carrier phase measurements obtained by a positioning reference unit, and their associated center frequency identifiers.

[0338] Example 46. An apparatus for communication, comprising:

[0339] means for sending to a location management function an uplink sounding reference signal configuration configured for at least one of: a user equipment, or a positioning reference unit uplink sounding reference signal transmission;

[0340] means for receiving from said location management function at least one center frequency identifier configuration for an uplink sounding reference signal;

[0341] means for receiving, from the location management function, a request to obtain one or more carrier phase measurements based on the at least one center frequency identifier configuration;

[0342] means for performing one or more carrier phase measurements associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration for the uplink sounding reference signal; and

[0343] Means for transmitting the one or more measurements and the associated at least one center frequency identifier to the location management function.

[0344] Example 47. The apparatus of Example 46, wherein the apparatus comprises: a network entity, a transmission reception point, or a positioning reference unit operating as a roadside unit or a transmission reception point.

[0345] Example 48. An apparatus for communication, comprising:

[0346] means for receiving from a location management function at least one center frequency identifier configuration for a downlink positioning reference signal within a positioning frequency layer;

[0347] means for receiving, by the positioning reference unit, a request to perform carrier phase measurements based on the at least one center frequency identifier configuration;

[0348] means for performing at least one carrier phase measurement associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration; and

[0349] Means for sending a report to the location management function regarding the at least one carrier phase measurement and the associated at least one center frequency identifier for the at least one carrier phase measurement.

[0350] Example 49. A non-transitory computer-readable medium comprising program instructions, which, when executed by an apparatus, cause the apparatus to at least perform a method according to any one of Examples 1 to 16.

[0351] Example 50. An apparatus for communication, comprising a circuit system configured to perform a method according to any one of Examples 1 to 16.

[0352] Example 51. A computer program comprising instructions which, when executed by an apparatus, cause the apparatus to perform a method according to any one of Examples 1 to 16.

Claims

1. A device for communication, comprising: at least one processor; as well as at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least: Sending a request to at least one of the following items to obtain at least one carrier phase measurement using at least one center frequency identifier configuration for at least one positioning reference signal: a network entity, or a user equipment, wherein the at least one positioning reference signal includes: at least one uplink sounding reference signal or a downlink positioning reference signal.

2. The apparatus of claim 1 , wherein the instructions, when executed by the at least one processor, further cause the apparatus to at least: Determining a downlink positioning reference signal configuration within a positioning frequency layer and the at least one center frequency identifier configuration for the downlink positioning reference signal, the at least one center frequency identifier configuration comprising: a set of center frequency identifiers within the positioning frequency layer for carrier phase measurement; The determined at least one center frequency identifier configuration is sent to a user equipment or a positioning reference unit to obtain one or more carrier phase measurements based on the at least one center frequency identifier configuration.

3. The apparatus of claim 2, wherein the instructions, when executed by the at least one processor, further cause the apparatus to at least: The one or more carrier phase measurements performed by the positioning reference unit and the at least one associated center frequency identifier are received from the positioning reference unit, the one or more carrier phase measurements being associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration.

4. The apparatus of claim 3, wherein the instructions, when executed by the at least one processor, further cause the apparatus to at least: receiving, from the user equipment, the one or more carrier phase measurements performed by the user equipment, and the associated at least one center frequency identifier, the one or more carrier phase measurements being associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration; and The position of the user equipment is estimated based at least on the one or more carrier phase measurements of the user equipment and the at least one or more carrier phase measurements of the positioning reference unit and their associated center frequency identifiers.

5. A device for communication, comprising: at least one processor; as well as at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least: receiving at least one center frequency identifier configuration for a downlink positioning reference signal within a positioning frequency layer; and A request is received to perform carrier phase measurements based on the at least one center frequency identifier configuration.

6. The apparatus of claim 5, wherein the instructions, when executed by the at least one processor, further cause the apparatus to at least: At least one carrier phase measurement is performed, the at least one carrier phase measurement associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration.

7. The apparatus of claim 6, wherein the instructions, when executed by the at least one processor, further cause the apparatus to at least: The at least one carrier phase measurement and the at least one center frequency identifier associated with the at least one carrier phase measurement are provided to a location management function.

8. The apparatus according to any one of claims 5 to 7, wherein the instructions, when executed by the at least one processor, further cause the apparatus to at least: The position of the apparatus is estimated using at least one of: the at least one carrier phase measurement obtained by the user equipment or one or more carrier phase measurements obtained by a positioning reference unit, and their associated center frequency identifiers.

9. An apparatus for communication, comprising: at least one processor; as well as at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least: sending, to a location management function, an uplink sounding reference signal configuration configured for at least one of: a user equipment, or a positioning reference unit uplink sounding reference signal transmission; receiving from the location management function at least one center frequency identifier configuration for an uplink sounding reference signal; receiving, from the location management function, a request to obtain one or more carrier phase measurements based on the at least one center frequency identifier configuration; performing one or more carrier phase measurements associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration for the uplink sounding reference signal; and The one or more measurements and the associated at least one center frequency identifier are sent to the location management function.

10. An apparatus for communication, comprising: at least one processor; as well as at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least: receiving, from a location management function, at least one center frequency identifier configuration for a downlink positioning reference signal within a positioning frequency layer; receiving, by the positioning reference unit, a request to perform carrier phase measurements based on the at least one center frequency identifier configuration; performing at least one carrier phase measurement associated with at least one center frequency identifier configured by the at least one center frequency identifier configuration; and A report is sent to the location management function regarding the at least one carrier phase measurement and the associated at least one center frequency identifier for the at least one carrier phase measurement.

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