Method performed by a positioning server and computer readable medium

Abstract

A method performed by a positioning server and a computer-readable medium are disclosed. The computer-readable medium includes instructions, which, when executed by one or more processors of the positioning server, cause the positioning server to perform the following operations: transmit a positioning measurement request to a user equipment UE; and upon receiving a message including information from the UE, decode the message, the information indicating that the UE is equipped with a receiver 1Rx antenna for reference signal time difference RSTD measurement.

Description

[0001] Division Statement

[0002] This application is a divisional application of the Chinese invention patent application with the application date of April 2, 2018, the invention name of “UE capability indication to positioning server” and the application number: 201880022726.1.

[0003] CROSS-REFERENCE TO RELATED APPLICATIONS

[0004] This application claims priority to U.S. Provisional Patent Application No. 62 / 480,980, filed on April 3, 2017, entitled “UE Capability Indication to Positioning Server,” the entire disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0005] Embodiments of the present invention generally relate to the field of wireless communication technology. Background Art

[0006] The background description provided herein is for the purpose of generally presenting the context of the present disclosure. To the extent described in this background section, and with respect to aspects of the specification that may not otherwise qualify as prior art at the time of filing, the work of the presently designated inventors is neither expressly nor impliedly admitted to be prior art against the present disclosure. Unless otherwise indicated herein, the methods described in this section are not prior art to the claims in the present disclosure and are not admitted to be prior art by inclusion in this section.

[0007] In some wireless networks, Long Term Evolution (LTE) enabled user equipment (UE) positioning functionality may be useful, providing a mechanism to support or assist in the calculation of the UE's geographic location. UE location knowledge may be used, for example, to support radio resource management functions, as well as for location-based services for operators, subscribers, and third-party service providers. Summary of the invention

[0008] Some embodiments of the present application provide one or more non-transitory computer-readable media NTCRM including instructions, which, when executed by one or more processors of a positioning server, cause the positioning server to perform the following operations: transmit a positioning measurement request to a user equipment UE; and upon receiving a message including information from the UE, decode the message, wherein the information indicates that the UE is equipped with a receiver 1Rx antenna for reference signal time difference RSTD measurement.

[0009] Some embodiments of the present application provide a method performed by a positioning server, the method comprising: transmitting a positioning measurement request to a user equipment UE through the positioning server; and decoding a message including information through the positioning server based on the positioning measurement request, the information indicating that the UE is equipped with a receiver 1Rx antenna for reference signal time difference RSTD measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The embodiments will be easily understood by the following detailed description in conjunction with the accompanying drawings. For ease of description, the same reference numerals represent the same structural elements. The embodiments are illustrated in the accompanying drawings by way of example and not limitation.

[0011] Figure 1 An example of a network including a UE in a wireless network according to various embodiments is schematically illustrated.

[0012] Figure 2 Example components of a device according to various embodiments are shown.

[0013] Figure 3 Also shown is an example radio frequency (RF) circuit equipped with one or more receiver chains in accordance with some embodiments.

[0014] Figure 4A and Figure 4B The operation flow / algorithm structure of notifying the positioning server of UE capability information from the perspective of the UE and the perspective of the serving cell according to some embodiments is shown.

[0015] Figure 5 An operational flow / algorithm structure for initiating and processing positioning measurements from the perspective of a positioning server according to some embodiments is shown.

[0016] Figure 6 An example interface of a baseband circuit according to some embodiments is shown.

[0017] Figure 7 Hardware resources are shown according to some embodiments. DETAILED DESCRIPTION

[0018] In the following detailed description, reference is made to the accompanying drawings forming a part thereof, wherein like numbers designate like parts throughout, and wherein practicable embodiments are shown by way of illustration. It should be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present disclosure. Therefore, the following specific embodiments should not be considered to have a limiting meaning.

[0019] The various operations may be described sequentially as multiple discrete actions or operations in a manner that is most helpful in understanding the claimed subject matter. However, the order of description should not be interpreted as implying that these operations must rely on the order. In particular, these operations may not be performed in the order presented. The described operations may be performed in an order different from the described embodiments. In additional embodiments, various additional operations may be performed and / or the described operations may be omitted.

[0020] For purposes of this disclosure, the phrases "A or B" and "A and / or B" mean (A), (B), or (A and B). For purposes of this disclosure, the phrases "A, B or C" and "A, B and / or C" mean (A), (B), (C), (A and B), (A and C), (B and C), or (A, B, and C).

[0021] The description may use the phrases "in an embodiment" or "in embodiments," which may each refer to one or more of the same or different embodiments. Furthermore, the terms "comprising," "including," "having," and the like used with respect to the embodiments of the present disclosure are synonymous.

[0022] As used herein, the term "circuitry" may refer to, be a part of, or include any combination of an integrated circuit (e.g., a field programmable gate array ("FPGA") and an application specific integrated circuit ("ASIC")), a discrete circuit, a combinational logic circuit, a system on a chip, a SOC, a packaged system, a SiP, that provides the described functionality. In some embodiments, the circuit may execute one or more software or firmware modules to provide the described functionality. In some embodiments, the circuit may include logic that operates at least partially in hardware.

[0023] In an embodiment, an apparatus, method, and storage medium for transmitting a UE capability indication to a positioning server in a wireless communication network may be described. The two receiver (2Rx) antennas of the UE are used to calculate the geographic location in positioning-related measurements in existing LTE communications. Therefore, the relevant processes and methods of such positioning-related measurements are designed with 2Rx UEs in mind. A variety of different LTE-enabled devices may be used in various applications within multiple market segments. In some cases, low-cost UEs may not be equipped with 2Rx antennas, or some UEs may not use two antennas for positioning measurements. Due to other UE implementations, other UEs may be equipped with 4Rx antennas. Therefore, in all cases, the 2Rx UE assumption may not be maintained for positioning measurements. The embodiment describes a UE capability indication to a positioning server, which enables flexible deployment and integration of various types of UEs.

[0024] Figure 1 An exemplary wireless network 100 (hereinafter referred to as "network 100") according to various embodiments herein is schematically illustrated. Network 100 may include UE 105 coupled to one or more access nodes (ANs), such as AN 110, 115. UE 105 is illustrated as a smartphone (e.g., a handheld touch-screen mobile computing device that can connect to one or more cellular networks), but may also include any mobile or non-mobile computing device, such as a personal data assistant (PDA), a pager, a laptop computer, a desktop computer, a wireless handset, or any computing device that includes a wireless communication interface.

[0025] In some embodiments, UE 105 may include an Internet of Things (IoT) UE, which may include a network access layer designed for low-power IoT applications that utilize short-term UE connections. The IOT UE may utilize technologies such as machine-to-machine (M2M) or machine-type communication (MTC) to exchange data with an MTC server or device via a public land mobile network (PLMN), proximity-based services (ProSe) or device-to-device (D2D) communications, sensor networks, or IOT networks. M2M or MTC data exchanges may be machine-initiated data exchanges. The IoT network describes interconnected IoT UEs, which may include uniquely identifiable embedded computing devices (within the Internet infrastructure) with short-term connections. The IoT UE may execute background applications (e.g., keep-alive messages, status updates, location-related services, etc.).

[0026] UE 105 may be configured to connect (e.g., be communicatively coupled) to a radio access network (RAN) 120. RAN 120 may be, for example, an evolved universal mobile telecommunications system (UMTS) terrestrial radio access network (E-UTRAN), a NextGen RAN (NG RAN), or other types of RANs. UE 105 may be connected to RAN 120 via connection 125, which includes a physical communication interface or layer. In this example, connection 125 is shown as an air interface for implementing a communicatively coupled connection, and may be consistent with a cellular communication protocol such as a global system for mobile communications (GSM) protocol, a code division multiple access (CDMA) network protocol, a push-to-talk (PTT) protocol, a PTT over cellular (POC) protocol, a universal mobile telecommunications system (UMTS) protocol, a 3GPP long term evolution (LTE) protocol, a fifth generation (5G) protocol, a new radio (NR) protocol, etc.

[0027] The RAN 120 may include ANs 110 and 115 that enable connectivity 125. These ANs 110 and 115 may be referred to as base stations (BSs), NodeBs, evolved NodeBs (eNBs), next generation NodeBs (gNBs), RAN nodes, serving cells, etc., and may include geographic stations (e.g., terrestrial access points) or satellite stations that provide coverage within a geographic area (e.g., a cell).

[0028] Either of the ANs 110 and 115 may terminate the air interface protocol and may be the first point of contact for the UE 105. In some embodiments, either of the ANs 110 and 115 may fulfill various logical functions of the RAN 120, including but not limited to radio network controller (RNC) functions such as radio bearer management, uplink and downlink dynamic radio resource management and data packet scheduling, and mobility management.

[0029] In some embodiments, a downlink resource grid may be used for downlink transmissions from any of the RAN nodes (e.g., ANs 110 and 115) to the UE 105, while uplink transmissions may use similar techniques. The grid may be a time-frequency grid, referred to as a resource grid or a time-frequency resource grid, which is a physical resource in the downlink in each time slot. This time-frequency plane representation is a common practice in orthogonal frequency division multiplexing (OFDM) systems, which makes radio resource allocation intuitive. Each column and row of the resource grid corresponds to an OFDM symbol and an OFDM subcarrier, respectively. The duration of the resource grid in the time domain corresponds to a time slot in a radio frame. The smallest time-frequency unit in the resource grid is represented as a resource unit. Each resource grid includes a plurality of resource blocks, which describe the mapping of certain physical channels to resource units. Each resource block includes a set of resource units; in the frequency domain, this may represent the minimum amount of resources that can currently be allocated. There are several different physical downlink channels that are delivered using such resource blocks.

[0030] The physical downlink shared channel (PDSCH) may carry user data and higher layer signaling to the UE 105. In addition, the physical downlink control channel (PDCCH) may carry information about the transport format and resource allocation related to the PDSCH channel. It may also inform the UE 105 of the transport format, resource allocation, and H-ARQ (Hybrid Automatic Repeat Request) information related to the uplink shared channel. Typically, downlink scheduling (assignment of control and shared channel resource blocks to the UE 105 within the cell) may be performed at any of the RAN access nodes 110 and 115 based on channel quality information fed back from any of the UEs 105. Downlink resource assignment information may be sent on the PDCCH for (e.g., assigned to) each UE 105.

[0031] PDCCH can use control channel elements (CCE) to convey control information. Before mapping to resource elements, PDCCH complex symbols can first be organized into quadruplets, which can then be rearranged using a sub-block interleaver for rate matching. One or more of these CCEs can be used to transmit each PDCCH, where each CCE can correspond to nine groups of four physical resource elements called resource element groups (REGs). Four quadrature phase shift keying (QPSK) symbols can be mapped to each REG. One or more CCEs can be used to transmit PDCCH, depending on the size of the downlink control information (DCI) and channel conditions. There can be four or more different PDCCH formats (e.g., aggregation levels, L=1, 2, 4, or 8) defined in LTE with different numbers of CCEs.

[0032] Some embodiments may use concepts for resource allocation of control channel information that are extensions of the above concepts. For example, some embodiments may utilize an enhanced physical downlink control channel (EPDCCH) that uses PDSCH resources for control information transmission. One or more enhanced control channel elements (ECCEs) may be used to transmit EPDCCH. Similar to the above, each ECCE may correspond to nine groups of four physical resource units known as enhanced resource element groups (EREGs). In some cases, an ECCE may have other numbers of EREGs.

[0033] RAN 120 is shown communicatively coupled to a mobility management entity (MME) 130 in a core network (CN) via an S1 interface 135. MME 130 may manage mobility aspects of access such as gateway selection and tracking area list management.

[0034] In an embodiment of UE positioning measurement operation, MME 130 may receive a request for some location services associated with a specific target (e.g., UE 105 from another entity). The other entity may be, for example, a Gateway Mobile Location Center (GMLC) or another UE. Alternatively, MME 130 itself may decide to initiate some location services on behalf of a specific target UE. For example, this may occur when UE 105 initiates an IP Multimedia Subsystem (IMS) emergency call. MME 130 may send a location service request to a positioning server 140, such as an enhanced serving mobile location center (eSMLC). For an uplink method, positioning server 140 may process the location service request sent from MME 130. Positioning server 140 may then return the result of the location service to MME 130. The result may be, for example, an estimate of the location of UE 105 and / or an indication of any assistance data transferred to UE 105. In the case of a location service requested by an entity other than MME 130 (e.g., another UE or positioning server 140), MME 130 may return the location service result to the entity.

[0035] In some embodiments, the positioning server 140 may interact with the UE 105 to obtain information that assists the UE 105 in performing position measurements via the LTE Positioning Protocol (LPP) 145. In some other embodiments, the positioning server 140 may interact with an access node (e.g., AN 110, 115) to obtain information that assists the UE 105 in performing position measurements via the LTE Positioning Protocol Annex (LPPa) 150.

[0036] In some other embodiments of E-UTRAN positioning operations, the positioning server may interact with devices in the E-UTRAN to obtain measurement information to assist in one or more position measurements of the UE.

[0037] Some embodiments may include a location measurement unit (LMU) 155 to make positioning measurements and transmit those measurements to the positioning server 140. All positioning measurements obtained by the LMU 155 may be supplied to the requesting positioning server 140. A UE positioning measurement request may involve measurements by multiple LMUs.

[0038] Figure 2Example components of a device 200 according to some embodiments are shown. In some embodiments, the device 200 may include at least as shown an application circuit 202, a baseband circuit 204, an RF circuit 206, a front-end module (FEM) circuit 208, and one or more antennas 210. The components of the device 200 shown may be included in a UE, an AN, or a positioning server. In some embodiments, the device 200 may include fewer elements (e.g., the AN may not utilize the application circuit 202, but instead include a processor / controller to process IP data received from an evolved packet core (EPC)). In some embodiments, the device 200 may include additional elements, such as, for example, a memory / storage device, a display, a camera, a sensor, or an input / output (I / O) interface. In other embodiments, the components described below may be included in more than one device (e.g., the circuit may be separately included in more than one device for Cloud-RAN (C-RAN) implementation).

[0039] The application circuitry 202 may include one or more application processors. For example, the application circuitry 202 may include circuitry such as, but not limited to, one or more single-core or multi-core processors. The processor(s) may include any combination of general-purpose processors and special-purpose processors (e.g., graphics processors, application processors, etc.). The processor may be coupled to or may include a memory / storage device, and may be configured to execute instructions stored in the memory / storage device to enable various applications or operating systems to run on the device 200. In some embodiments, the processor of the application circuitry 202 may process IP packets received from the EPC.

[0040] The baseband circuit 204 may include circuits such as, but not limited to, one or more single-core or multi-core processors. The baseband circuit 204 may include one or more baseband processors or control logic to process baseband signals received from the receive signal path of the RF circuit 206 and to generate baseband signals for the transmit signal path of the RF circuit 206. The baseband processing circuit 204 may interface with the application circuit 202 for generating and processing baseband signals and for controlling the operation of the RF circuit 206. For example, in some embodiments, the baseband circuit 204 may include a third generation (3G) baseband processor 204A, a fourth generation (4G) baseband processor 204B, a fifth generation (5G) baseband processor 204C, or other (one or more) baseband processors 204D for other existing generations, generations under development, or generations to be developed in the future (e.g., second generation (2G), sixth generation (6G), etc.). The baseband circuit 204 (e.g., one or more of the baseband processors 204A to 204D) may handle various radio control functions that enable communication with one or more radio networks via the RF circuit 206. In other embodiments, some or all of the functions of the baseband processors 204A to 204D may be included in a module stored in the memory 204G and executed via the central processing unit (CPU) 204E. The radio control functions may include, but are not limited to, signal modulation / demodulation, encoding / decoding, radio frequency shifting, etc. In some embodiments, the modulation / demodulation circuit of the baseband circuit 204 may include fast Fourier transform (FFT), precoding, or constellation mapping / demapping functions. In some embodiments, the encoding / decoding circuit of the baseband circuit 204 may include convolution, tail-biting convolution, turbo, Viterbi, or low-density parity check (LDPC) encoder / decoder functions. The embodiments of the modulation / demodulation and encoder / decoder functions are not limited to these examples and may include other suitable functions in other embodiments.

[0041] In some embodiments, the baseband circuit 204 may include one or more audio digital signal processors (one or more) (DSP) 204F. The audio DSP (one or more) 204F may include elements for compression / decompression and echo cancellation, and may include other suitable processing elements in other embodiments. In some embodiments, the components of the baseband circuit may be appropriately combined in a single chip, a single chipset, or arranged on the same circuit board. In some embodiments, some or all of the constituent components of the baseband circuit 204 and the application circuit 202 may be implemented together, such as, for example, on a system on a chip (SOC).

[0042] In some embodiments, baseband circuitry 204 may provide communications compatible with one or more radio technologies. For example, in some embodiments, baseband circuitry 204 may support communications with an Evolved Universal Terrestrial Radio Access Network (EUTRAN) or other wireless metropolitan area network (WMAN), wireless local area network (WLAN), wireless personal area network (WPAN). Embodiments in which baseband circuitry 204 is configured to support radio communications of more than one wireless protocol may be referred to as multi-mode baseband circuitry.

[0043] RF circuit 206 may use modulated electromagnetic radiation through a non-solid medium to achieve communication with a wireless network. In various embodiments, RF circuit 206 may include one or more switches, filters, amplifiers, etc. to facilitate communication with a wireless network. RF circuit 206 may include receiver circuit 206A, which may include circuits for down-converting RF signals received from FEM circuit 208 and providing baseband signals to baseband. RF circuit 06 may also include transmitter circuit 206B, which may include circuits for up-converting baseband signals provided by baseband circuit 204 and providing RF output signals to RF circuit 208 for transmission.

[0044] In some embodiments, the output baseband signal and the input baseband signal may be analog baseband signals, although the scope of the embodiments is not limited in this respect. In some alternative embodiments, the output baseband signal and the input baseband signal may be digital baseband signals. In these alternative embodiments, RF circuit 206 may include analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuits, and baseband circuit 204 may include a digital baseband interface to communicate with RF circuit 206.

[0045] In some dual-mode embodiments, separate radio integrated circuit (IC) circuits may be provided for processing signals for each spectrum, although the scope of the embodiments is not limited in this respect.

[0046] The FEM circuitry 208 may include a receive signal path, which may include circuitry configured to operate on RF signals received from one or more antennas 210, amplify the received signals, and provide an amplified version of the received signals to the RF circuitry 206 for further processing. The FEM circuitry 208 may also include a transmit signal path, which may include circuitry configured to amplify signals provided by the RF circuitry 206 for transmission by one or more of the one or more antennas 210. In various embodiments, amplification by the transmit signal path or by the receive signal path may be accomplished only in the RF circuitry 206, only in the FEM 208, or in both the RF circuitry 206 and the FEM 208.

[0047] In some embodiments, FEM circuit 208 may include a TX / RX switch to switch between transmit mode and receive mode operation. FEM circuit 208 may include a receive signal path and a transmit signal path. The receive signal path of FEM circuit 208 may include a low noise amplifier (LNA) to amplify a received RF signal and provide an amplified received RF signal as an output (e.g., provided to RF circuit 206). The transmit signal path of FEM circuit 208 may include a power amplifier (PA) for amplifying an input RF signal (e.g., provided by RF circuit 206), and one or more filters to generate an RF signal for subsequent transmission (e.g., through one or more of one or more antennas 210).

[0048] The processor of the application circuit 202 and the processor of the baseband circuit 204 can be used to execute elements of one or more instances of the protocol stack. For example, the processor of the baseband circuit 204 (alone or in combination) can be used to perform layer 3, layer 2, or layer 1 functions, and the processor of the application circuit 202 can utilize data received from these layers (e.g., packet data) and further perform layer 4 functions (e.g., transport communication protocol (TCP) and user datagram protocol (UDP) layers). As mentioned herein, layer 3 may include a radio resource control (RRC) layer, which will be described in further detail below. As mentioned herein, layer 2 may include a media access control (MAC) layer, a radio link control (RLC) layer, and a packet data convergence protocol (PDCP) layer, which will be described in further detail below. As mentioned herein, layer 1 may include a physical (PHY) layer of the UE / AN, which will be described in further detail below.

[0049] The UE is usually equipped with two receiver (2Rx) chains, which are coupled to corresponding receiver antennas. In existing positioning measurement events, such as reference signal time difference (RSTD) measurement events, both Rx chains of the 2Rx UE can be used to measure and provide RSTD measurement reports associated with multiple serving cells in the network. Each RSTD measurement needs to be performed and reported within a certain time. If the UE 105 fails to report to the positioning server 140 relative to RSTD within the specified time, the RSTD measurement performed is considered to be a failure, which may result in less accurate positioning measurements. However, for the newly introduced UE categories, the UE may be equipped with only one Rx chain coupled to a single antenna. UEs equipped with one Rx chain may become more popular in low cost or some other implementations (e.g., machine type communication (MTC), enhanced MTC). LTE UE category 0, category 1bis and category M are some example UE categories in which the UE may be equipped with only a single Rx chain and its receiver antenna. At the same time, UEs equipped with more than two Rx chains are also under development (e.g., 4Rx UEs).

[0050] Figure 3 Receiver architecture components of device 200 according to some embodiments are shown in more detail. In particular, Figure 3 An RF circuit 206 is shown having one or more Rx chains 206A. Figure 3 One Rx chain 206A is shown coupled to one antenna 210 in a solid line frame. Additional antennas / Rx chains are shown in dashed lines to illustrate alternative devices with two or more Rx chains. When only one Rx chain is available for positioning measurements instead of two Rx chains, additional time delays may be required to complete the measurements. If the same time delay is maintained for a 1Rx UE as for a 2Rx UE, positioning accuracy may be sacrificed, which may result in less accurate or inaccurate positioning measurements, or failed positioning measurements.

[0051] Current positioning measurements assume that all UEs in the measurement are 2Rx UEs, and the positioning server has no knowledge about the UE capabilities associated with the positioning measurements. Therefore, for 1Rx UEs, less accurate or inaccurate positioning measurements may occur when the measurement is under the configuration of 2Rx UEs.

[0052] In order to solve the above problems caused by 1Rx UE in positioning measurement, the embodiments introduce multiple solutions by notifying the positioning server about UE capability information in positioning measurement. In these methods, the positioning server can be notified that the target UE in the positioning measurement is equipped with one Rx chain instead of two Rx chains, so that the positioning server can accommodate the corresponding positioning measurement configuration based on the confirmation of such UE capability information in positioning measurement.

[0053] It is worth noting that a receiver chain may correspond to one or more antennas, or antenna arrays, depending on the operating RF frequency. For operating RF frequencies in the millimeter wave range, or for frequencies above 6 GHz, antenna arrays are often implemented for better reception and / or directional reception. In those antenna array scenarios that are implemented, unless otherwise specified, one receiver chain may be considered to correspond to one Rx antenna. "Rx chain" and "Rx antenna" are used interchangeably herein. Figure 4A An operational flow / algorithm structure 400 for notifying the positioning server 140 of capability information of the UE 105 according to some embodiments is shown. The operational flow / algorithm structure 400 may be performed by the UE 105 or its circuitry (eg, the baseband circuitry 204).

[0054] The operational flow / algorithm structure 400 may include processing the positioning measurement request at 410. In some embodiments, the UE 105 may receive the positioning measurement request from the positioning server 140 or some other entity in the network.

[0055] The operation flow / algorithm structure 400 may also include generating a message including information indicating UE capabilities at 420. The UE capabilities in this context may refer to the capabilities of the UE 105 related to performing positioning measurements. In some embodiments, the UE capability information may include the number of Rx chains or Rx antennas that the UE 105 is equipped with, or the number of Rx chains or Rx antennas that the UE 105 can use for positioning measurements. In various embodiments, the number of Rx chains may be 1, 2, 4, or some other number depending on the UE receiver capabilities.

[0056] Alternatively or additionally, the UE capability information may include the LTE UE category of the target UE 105, which may be Category 0, Category 1, Category M, or some other 3GPP category.

[0057] Alternatively or additionally, if the UE does not require additional delay for positioning measurements, the UE capability information may include an indication of a normal delay for positioning measurements. Otherwise, if the UE is equipped with one Rx chain and requires additional time for positioning measurements, the UE capability information may include an indication of an extended delay. The delay may be a measurement delay or a reporting delay associated with the positioning measurement.

[0058] In the example of RSTD measurement requirement, the UE needs to measure and provide RSTD measurement reports on multiple cells in the network within a certain amount of time, T RSTD IntraFreqFDD，E-UTRAN , is given by:

[0059] T RSTD IntraFreqFDD,E-UTRAN =TPRS·(M-1)+Δms

[0060] Where T PRS is the cell-specific positioning subframe configuration period, M is the number of positioning reference signal (PRS) positioning opportunities, when T PRS When M is 160ms, when T PRS When it is greater than 160ms, M is 8.

[0061] The target UE 105 may incorporate one or more of the UE capability information identified above into an observed time difference of arrival (OTDOA) message that provides OTDOA positioning capabilities (e.g., in an OTDOA-ProvideCapabilities information element) to a positioning server. The UE capability information may be included in the OTDOA-ProvideCapabilities information element or separate from the OTDOA-ProvideCapabilities information element.

[0062] The operation flow / algorithm structure 400 may also include providing the message to the RF circuit 206 for transmission to the positioning server 140 at 430. The message may be generated and sent via LPP or a similar protocol related to communication between the positioning server and the target UE. Upon receiving the UE capability information, the positioning server 140 may configure a corresponding positioning measurement configuration for the target UE based on the received UE capability information.

[0063] Figure 4B An operation flow / algorithm structure 405 for notifying the positioning server 140 of capability information of the UE 105 according to some embodiments is shown. The operation flow / algorithm structure 405 may be performed by the AN 110 or a serving cell or circuit therein.

[0064] The operational flow / algorithm structure 405 may include processing the positioning measurement request at 415. In some embodiments, the AN 110 or serving cell may receive the positioning measurement request from the positioning server 140 or some other entity in the network.

[0065] The operation flow / algorithm structure 405 may include obtaining UE capability information at 425. For example, the UE capability information may include the number of Rx chains, or the LTE UE category of the UE.

[0066] The operation flow / algorithm structure 405 may also include generating a message including information indicating the target UE capabilities at 435. The target UE capabilities may be similar to those described above with respect to Figure 4A UE capabilities discussed.

[0067] The operation flow / algorithm structure 405 may also include providing the message to the RF circuit 206 for transmission to the positioning server 140 at 445. The message may be generated and transmitted via the LTE Positioning Protocol Annex (LPPa) or a similar protocol related to communication between the positioning server and the AN. Upon receiving the UE capability information, the positioning server 140 may configure a corresponding positioning measurement configuration for the target UE based on the received UE capability information.

[0068] Figure 5 An operational flow / algorithm structure 500 for initiating and processing positioning measurements according to some embodiments is shown. The operational flow / algorithm structure 500 may be performed by the positioning server 140 or circuitry thereof.

[0069] The operational flow / algorithm structure 500 may include transmitting a positioning measurement request to the UE 105 or the AN 110 at 510. In some embodiments, the positioning measurement may be initiated by the positioning server 140. In other embodiments, the positioning measurement may be initiated by the MME 130, and the positioning server 140 may transmit the positioning measurement request when processing an initialization message received from the MME 130.

[0070] The operational flow / algorithm structure 500 may include receiving a message generated by the UE 105 at 420 at 520, wherein the message includes UE capability information. The message may also include the RSTD measured by the UE 105 if the message is incorporated into the OTDOA-ProvideCapabilities information element.

[0071] The operation flow / algorithm structure 500 may include configuring a corresponding positioning measurement configuration for the target UE based on the received message at 530. The positioning server 140 may utilize a corresponding measurement delay or reporting delay for the location measurement based on the received UE capability information. In some examples, the positioning server 140 may determine a sufficient measurement delay or reporting delay for the target UE. For example, if the positioning server 140 confirms that the UE 105 is equipped with an Rx chain, it may utilize an extended measurement delay or reporting delay instead of a normal delay to allocate a longer time for positioning measurements associated with the 1Rx UE. This may mitigate any erroneous measurement inaccuracies or errors that may be unnecessarily introduced by the 1Rx UE.

[0072] Communications between the positioning server and the target UE may be via LPP; and communications between the positioning server and the eNB may be via LPPa. In an example, the location server may be an enhanced serving mobile location center (eSMLC).

[0073] Figure 6 An example interface of a baseband circuit according to some embodiments is shown. As described above, Figure 2 The baseband circuit 204 may include processors 204A to 204E and a memory 204G used by the processors. Each of the processors 204A to 204E may include a memory interface 604A to 604E, respectively, to send / receive data to / from the memory 204G.

[0074] The baseband circuit 204 may also include one or more interfaces to communicatively couple to other circuits / devices, such as a memory interface 612 (e.g., an interface for sending / receiving data to / from a memory external to the baseband circuit 204), an application circuit interface 614 (e.g., an interface for sending / receiving data to / from a memory external to the baseband circuit 204), and an application circuit interface 615 (e.g., an interface for sending / receiving data to / from a memory external to the baseband circuit 204). Figure 2 202 to send / receive data from the application circuit 202), RF circuit interface 616 (e.g., to Figure 2 RF circuit 206 to send / receive data from it), wireless hardware connection interface 618 (e.g., to a near field communication (NFC) component, Bluetooth Components (e.g., Bluetooth Low Energy ), components and other communication components to send / receive data from them), and a power management interface 620 (e.g., an interface for sending / receiving power or control signals).

[0075] Figure 7 is a block diagram illustrating components capable of reading instructions from a machine-readable or computer-readable medium (e.g., a non-transitory machine-readable storage medium) and performing any one or more of the methods discussed herein, according to some example embodiments. Specifically, Figure 7 A graphical representation of hardware resources 700 is shown including one or more processors (or processor cores) 710, one or more memory / storage devices 720, and one or more communication resources 730, each of which may be communicatively coupled via a bus 740. For embodiments utilizing node virtualization (e.g., network function virtualization (NFV)), a hypervisor 702 may be executed to provide an execution environment for one or more network slices / sub-slices to utilize the hardware resources 700.

[0076] Processor 710 (e.g., a central processing unit (CPU), a reduced instruction set computing (RISC) processor, a complex instruction set computing (CISC) processor, a graphics processing unit (GPU), a digital signal processor (DSP) such as a baseband processor, an application specific integrated circuit (ASIC), a radio frequency integrated circuit (RFIC), another processor, or any suitable combination thereof) may include, for example, processor 712 and processor 714.

[0077] The memory / storage device 720 may include main memory, disk storage, or any suitable combination thereof. The memory / storage device 720 may include, but is not limited to, any type of volatile or non-volatile memory, such as dynamic random access memory (DRAM), static random access memory (SRAM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), flash memory, solid-state storage, etc.

[0078] The communication resources 730 may include an interconnect or network interface component or other suitable device to communicate with one or more peripheral devices 704 or one or more databases 706 via the network 708. For example, the communication resources 730 may include a wired communication component (e.g., for coupling via a universal serial bus (USB), a cellular communication component, an NFC component, a Bluetooth Components (e.g., Bluetooth Low Energy ), components and other communication components.

[0079] The instructions 750 may include software, programs, applications, applet programs, apps, or other executable codes for causing at least any one of the processors 710 to perform any one or more of the methods discussed herein. For example, in an embodiment where the hardware resource 700 is implemented in the UE 105, the instructions 750 may cause the UE to perform some or all of the operation flow / algorithm structure 400. In other embodiments, the hardware resource 700 may be implemented in the AN 110 or the positioning server 140. The instructions 750 may cause the AN 110 or the positioning server 140 to perform some or all of the operation flow / algorithm structure 405 or 500, respectively. The instructions 750 may reside in whole or in part in at least one of the processor 710 (e.g., in a cache memory of the processor), the memory / storage device 720, or any suitable combination thereof. In addition, any portion of the instructions 750 may be transferred from any combination of the peripheral device 704 or the database 706 to the hardware resource 700. Therefore, the processor 710 memory, the memory / storage device 720, the peripheral device 704, and the database 706 are examples of computer-readable and machine-readable media. Some non-limiting examples of various embodiments are provided below.

[0080] Example 1 may include one or more computer-readable media including instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to perform the following operations: process a positioning measurement request; based on the positioning measurement request, generate a message including information indicating the number of antennas of the UE receiver; and provide the message to a radio frequency circuit for transmission to a positioning server.

[0081] Example 2 may include one or more computer-readable media of Example 1 and / or some other examples herein, wherein the positioning measurement request is received from a positioning server.

[0082] Example 3 may include one or more computer-readable media of Example 1 and / or some other examples herein, wherein the UE transmits the message to the positioning server via a Long Term Evolution (LTE) Positioning Protocol (LPP).

[0083] Example 4 may include one or more computer-readable media of Example 1 and / or some other examples herein, wherein the positioning server is an enhanced serving mobile location center (eSMLC).

[0084] Example 5 may include one or more computer-readable media of Example 1 and / or some other examples herein, wherein the UE is equipped with one receiver (1Rx) antenna.

[0085] Example 6 may include one or more computer-readable media of Example 1 and / or some other examples herein, wherein the UE is a Category 1bis (Cat 1bis) UE.

[0086] Example 7 may include one or more computer-readable media of Example 1 and / or some other examples herein, wherein information indicating the number of receiver antennas of the UE is incorporated into an observed time difference of arrival capabilities (OTDOA-ProvideCapabilities) information element.

[0087] Example 8 may include one or more computer-readable media including instructions that, when executed by one or more processors of a positioning server, cause the positioning server to: transmit a positioning measurement request to a user equipment (UE); and based on the positioning measurement request, receive a message including information on the number of receiver antennas of the UE.

[0088] Example 9 may include one or more computer-readable media of Example 8 and / or some other examples herein, wherein the instructions, when executed by one or more processors of the positioning server, further cause the positioning server to configure a positioning measurement configuration based on the received message.

[0089] Example 10 may include the one or more computer-readable media of Example 8 and / or some other examples herein, wherein the positioning server is an enhanced serving mobile location center (eSMLC).

[0090] Example 11 may include one or more computer-readable media of Example 8 and / or some other examples herein, wherein the message complies with a Long Term Evolution (LTE) Positioning Protocol (LPP).

[0091] Example 12 may include one or more computer-readable media including instructions that, when executed by one or more processors of a serving cell of a user equipment (UE), cause the serving cell to: process a positioning measurement request for the UE from a positioning server; based on the positioning measurement request, generate a message including information indicating the number of receiver antennas of the UE; and transmit the message to the positioning server.

[0092] Example 13 may include one or more computer-readable media of Example 12 and / or some other examples herein, wherein the serving cell transmits the message to the positioning server via a Long Term Evolution (LTE) Positioning Protocol Annex (LPPa).

[0093] Example 14 may include one or more computer-readable media of Example 12 and / or some other examples herein, wherein the positioning server is an enhanced serving mobile location center (eSMLC).

[0094] Example 15 may include one or more computer-readable media of Example 12 and / or some other examples herein, wherein the UE is equipped with one receiver (1Rx) antenna.

[0095] Example 16 may include a device of a baseband circuit in a user equipment (UE), comprising: one or more baseband processors for receiving a positioning measurement request from a positioning server; and a central processing unit (CPU) coupled to the baseband processor, the CPU generating a message including information indicating the number of receiver antennas of the UE, indicating the LTE UE category of the UE, or indicating an extended / normal measurement delay or reporting delay in positioning measurement for the UE based on the positioning measurement request.

[0096] Example 17 may include the apparatus of Example 16 and / or some other examples herein, wherein the one or more baseband processors are further configured to transmit the message to the positioning server via a Long Term Evolution (LTE) Positioning Protocol (LPP).

[0097] Example 18 may include the apparatus of Example 16 and / or some other examples herein, wherein the positioning server is an enhanced serving mobile location center (eSMLC).

[0098] Example 19 may include the apparatus of Example 16 and / or some other examples herein, wherein the UE is equipped with one receiver (1Rx) antenna.

[0099] Example 20 may include the apparatus of Example 16 and / or some other examples herein, wherein the LTE UE category of the UE is Category 0, Category M, or Category 1bis.

[0100] Example 21 may include the apparatus of Example 16 and / or some other examples herein, wherein the message is incorporated into observed time difference of arrival capabilities information (OTDOA-ProvideCapabilities).

[0101] Example 22 may include a serving cell associated with a user equipment (UE) in a network, comprising: a baseband circuit for receiving a positioning measurement request for the UE from a positioning server; and a processing circuit coupled to the baseband circuit, the processing circuit generating, based on the positioning measurement request for the UE, a message including information indicating the number of receiver antennas of the UE, indicating the LTE UE category of the UE, or indicating an extended / normal measurement delay or reporting delay in positioning measurement for the UE.

[0102] Example 23 may include the apparatus of Example 22 and / or some other examples herein, wherein the baseband circuit further transmits the message to the positioning server via a Long Term Evolution (LTE) Positioning Protocol Annex (LPPa).

[0103] Example 24 may include the apparatus of Example 22 and / or some other examples herein, wherein the positioning server is an enhanced serving mobile location center (eSMLC).

[0104] Example 25 may include a device of a user equipment (UE), including: a receiving device for receiving a positioning measurement request from a positioning server; a generating device for generating a message including information indicating user equipment (UE) capability information based on the positioning measurement request; and a transmitting device for transmitting the message to the positioning server.

[0105] Example 26 may include the apparatus of Example 25 and / or some other examples herein, wherein the UE capability information includes a quantity of receiver antennas of the UE or an LTE UE category of the UE.

[0106] Example 27 may include the apparatus of Example 25 and / or some other examples herein, wherein transmission of the message to the positioning server is via a Long Term Evolution (LTE) Positioning Protocol (LPP).

[0107] Example 28 may include the apparatus of Example 25 and / or some other examples herein, wherein the positioning server is an enhanced serving mobile location center (eSMLC).

[0108] Example 29 may include the apparatus of Example 25 and / or some other examples herein, wherein the UE is equipped with one receiver (1Rx) antenna.

[0109] Example 30 may include the apparatus of Example 26 and / or some other examples herein, wherein the LTE UE category of the UE includes Category 0, Category M, or Category 1bis.

[0110] Example 31 may include the apparatus of Examples 29 and 30 and / or some other examples herein, wherein the UE capability information includes an extended measurement delay or a reporting delay in positioning measurements for the UE.

[0111] Example 32 may include the apparatus of Examples 29 and 30 and / or some other examples herein, wherein the UE capability information includes a normal measurement delay or a reporting delay in positioning measurements for the UE.

[0112] Example 33 may include the apparatus of Example 25 and / or some other examples herein, wherein the message is incorporated into Observed Time Difference of Arrival Capabilities information (OTDOA-ProvideCapabilities).

[0113] Example 34 may include an apparatus for a serving cell of a user equipment (UE) in a network, comprising: a receiving device for receiving a positioning measurement request from a positioning server for a user equipment (UE) in the network associated with the serving cell; a generating device for generating a message including information indicating UE capability information of a target UE based on the positioning measurement request; and a transmitting device for transmitting the message to the positioning server via a Long Term Evolution (LTE) Positioning Protocol Annex (LPPa).

[0114] Example 35 may include the apparatus of Example 34 and / or some other examples herein, wherein the UE capability information includes a number of receiver antennas of the UE or an LTE UE category of the UE.

[0115] Example 36 may include the apparatus of Example 34 and / or some other examples herein, wherein the positioning server is an enhanced serving mobile location center (eSMLC).

[0116] Example 37 may include the apparatus of Examples 34 and 36 and / or some other examples herein, wherein the UE is equipped with one receiver (1Rx) antenna.

[0117] Example 38 may include the apparatus of Examples 34 and 37 and / or some other examples herein, wherein the UE capability information includes an extended measurement delay or a reporting delay in positioning measurements for the UE.

[0118] Example 39 may include the apparatus of Examples 34 and 37 and / or some other examples herein, wherein the UE capability information includes a normal measurement delay or a reporting delay in positioning measurements for the UE.

[0119] Example 40 may include a method comprising: receiving or causing receipt of a positioning measurement request from a positioning server; generating or causing generation of a message including information indicating user equipment (UE) capability information based on the positioning measurement request; and transmitting or causing transmission of the message to the positioning server.

[0120] Example 41 may include the method of Example 40 and / or some other examples herein, wherein the UE capability information includes a number of receiver antennas of the UE.

[0121] Example 42 may include the method of Example 40 and / or some other examples herein, wherein the UE capability information includes an LTE UE category of the UE.

[0122] Example 43 may include the method of Example 42 and / or some other examples herein, wherein the LTE UE category of the UE includes Category 0, Category M, or Category 1bis.

[0123] Example 44 may include the method of Example 40 and / or some other examples herein, wherein the UE capability information includes an extended measurement delay or a reporting delay in positioning measurements for the UE.

[0124] Example 45 may include the method of Example 40 and / or some other examples herein, wherein the UE capability information includes a normal measurement delay or a reporting delay in positioning measurements for the UE.

[0125] Example 46 may include the method of Example 40 and / or some other examples herein, wherein transmission of the message to the positioning server is via a Long Term Evolution (LTE) Positioning Protocol (LPP).

[0126] Example 47 may include the method of Example 40 and / or some other examples herein, wherein the positioning server is an enhanced serving mobile location center (eSMLC).

[0127] Example 48 may include the method of Example 40 and / or some other examples herein, wherein the UE is equipped with one receiver (1Rx) antenna.

[0128] Example 49 may include the method of Example 40 and / or some other examples herein, wherein the message is incorporated into Observed Time Difference of Arrival Capabilities information (OTDOA-ProvideCapabilities).

[0129] Example 50 may include a method comprising: receiving or causing receipt of a positioning measurement request from a positioning server of a user equipment (UE) in a network associated with a serving cell; generating or causing generation of a message including information indicating UE capability information of a target UE based on the positioning measurement request; and transmitting or causing transmission of the message to the positioning server via a Long Term Evolution (LTE) Positioning Protocol Annex (LPPa).

[0130] Example 51 may include the method of Example 50 and / or some other examples herein, wherein the UE capability information includes a number of receiver antennas of the UE.

[0131] Example 52 may include the method of Example 50 and / or some other examples herein, wherein the UE capability information includes an LTE UE category of the UE.

[0132] Example 53 may include the method of Example 50 and / or some other examples herein, wherein the positioning server is an enhanced serving mobile location center (eSMLC).

[0133] Example 54 may include the method of Example 50 and / or some other examples herein, wherein the UE capability information includes an indication of an extended measurement delay or reporting delay in positioning measurements for the UE.

[0134] Example 55 may include the method of Example 50 and / or some other examples herein, wherein the UE capability information includes an indication of a normal measurement delay or reporting delay in positioning measurements for the UE.

[0135] Example 56 may include the methods of Examples 50 to 55 and / or some other examples herein, wherein the UE is equipped with one receiver (1Rx) antenna.

[0136] The present disclosure is described with reference to flowchart illustrations or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present disclosure. It will be understood that each box of the flowchart illustration or block diagram, and the combination of boxes in the flowchart illustration or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device to produce a machine, so that instructions executed by the processor of the computer or other programmable data processing device create a device for implementing the functions / actions specified in one or more boxes of the flowchart or block diagram.

[0137] These computer program instructions may also be stored in a computer-readable medium, which can instruct a computer or other programmable data processing device to act in a specific manner, so that the instructions stored in the computer-readable medium produce an article of manufacture including an instruction device, which implements the functions / actions specified in one or more boxes of a flowchart or program block diagram.

[0138] Computer program instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are performed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide a process for implementing the functions / actions specified in one or more boxes of the flowchart or block diagram.

[0139] The illustrated embodiments described herein, including those described in the Abstract, are not intended to be exhaustive or to limit the disclosure to the precise forms disclosed. Although specific implementations and examples are described herein for illustrative purposes, various alternative or equivalent embodiments or implementations intended to achieve the same purpose may be made based on the above specific embodiments without departing from the scope of the present disclosure, as will be appreciated by those skilled in the relevant art.

Claims

1. A method performed by one or more processors of a user equipment (UE) in a communication network, the method comprising: Receiving a positioning measurement request message initiated by a positioning server in the communication network; In response to receiving the positioning measurement request message, generating a signaling message for indicating an observed time difference of arrival (OTDOA) positioning capability of the UE, wherein the indicated OTDOA positioning capability includes the number of downlink receive antennas of the UE for reference signal time difference (RSTD) measurement, wherein the UE is configured to perform positioning measurements within a time period corresponding to the number of downlink receive antennas for RSTD measurement; and The signaling message is caused to be transmitted to the positioning server.

2. The method of claim 1, wherein the positioning server comprises an enhanced serving mobile location center (eSMLC). 3 . The method according to claim 1 , wherein at least one of the positioning measurement request message or the signaling message is based on one of the Long Term Evolution (LTE) Positioning Protocol (LPP) or the LTE Positioning Protocol Annex (LPPa). 4 . The method according to claim 1 , wherein the number of downlink receive antennas of the UE for RSTD measurement comprises one of one receiver 1Rx antenna, two receiver 2Rx antennas, or four receiver 4Rx antennas. 5 . The method of claim 1 , wherein the indicated OTDOA positioning capability further comprises an LTE category of the UE, the LTE category being one of LTE Category 0, LTE Category 1, or LTE Category M. 6 . 6 . The method of claim 1 , wherein the time period for the UE to perform the positioning measurement comprises one of a normal delay or an extended delay.

7. The method of claim 1, wherein the signaling comprises an OTDOA-ProvideCapabilities information element (IE), and wherein the indicated positioning capabilities of the UE are contained in the OTDOA-ProvideCapabilities IE.

8. The method of claim 1, wherein causing the signaling message to be transmitted to the positioning server comprises transmitting the signaling message to a location management unit corresponding to the positioning server.

9. The method according to claim 1, wherein the positioning server is configured to: receiving the signaling message from the UE; Determining, based on the indicated OTDOA positioning capability, that the UE is equipped with a receiver 1Rx antenna for RSTD measurement; and In response to determining that the UE is equipped with 1 Rx antenna for RSTD measurement, an extended measurement delay is configured for the UE for reporting RSTD measurement.

10. A device for positioning measurement of a user equipment UE in a communication network, the device being configured to: Receiving a positioning measurement request message initiated by a positioning server in the communication network; In response to receiving the positioning measurement request message, a signaling message is generated for indicating the observed time difference of arrival (OTDOA) positioning capability of the UE, wherein the indicated OTDOA positioning capability includes the number of downlink receiving antennas of the UE for reference signal time difference (RSTD) measurement, wherein: The UE is configured to perform positioning measurements within a time period corresponding to the number of downlink receive antennas used for RSTD measurement; and The signaling message is caused to be transmitted to the positioning server.

11. The apparatus of claim 10, wherein the positioning server comprises an enhanced serving mobile location center (eSMLC). 12 . The apparatus of claim 10 , wherein at least one of the positioning measurement request message or the signaling message is based on one of a Long Term Evolution (LTE) Positioning Protocol (LPP) or a LTE Positioning Protocol Annex (LPPa). 13 . The apparatus of claim 10 , wherein the number of downlink receive antennas of the UE for RSTD measurement comprises one of one receiver 1Rx antenna, two receiver 2Rx antennas, or four receiver 4Rx antennas.

14. The apparatus of claim 10, wherein the indicated OTDOA positioning capabilities further include an LTE category of the UE, the LTE category being one of LTE Category 0, LTE Category 1, or LTE Category M.

15. The apparatus of claim 10, wherein the time period for the UE to perform the positioning measurement comprises one of a normal delay or an extended delay.

16. The apparatus of claim 10, wherein the signaling comprises an OTDOA-ProvideCapabilities information element (IE), and wherein the indicated positioning capabilities of the UE are contained in the OTDOA-ProvideCapabilities IE.

17. The apparatus of claim 10, wherein causing the signaling message to be transmitted to the positioning server comprises transmitting the signaling message to a location management unit corresponding to the positioning server.

18. The apparatus according to claim 10, wherein the positioning server is configured to: receiving the signaling message from the UE; Determining, based on the indicated OTDOA positioning capability, that the UE is equipped with a receiver 1Rx antenna for RSTD measurement; and In response to determining that the UE is equipped with 1 Rx antenna for RSTD measurement, an extended measurement delay is configured for the UE for reporting RSTD measurement.

19. A computer-readable medium comprising instructions, which when executed by one or more processors of a user equipment (UE) in a communication network causes the UE to perform the following operations: Receiving a positioning measurement request message initiated by a positioning server in the communication network; In response to receiving the positioning measurement request message, a signaling message is generated for indicating the observed time difference of arrival (OTDOA) positioning capability of the UE, wherein the indicated OTDOA positioning capability includes the number of downlink receiving antennas of the UE for reference signal time difference (RSTD) measurement, wherein: The UE is configured to perform positioning measurements within a time period corresponding to the number of downlink receive antennas used for RSTD measurement; and The signaling message is caused to be transmitted to the positioning server.

20. The computer-readable medium of claim 19, wherein the positioning server comprises an enhanced serving mobile location center (eSMLC).

21. The computer-readable medium of claim 19, wherein at least one of the positioning measurement request message or the signaling message is based on one of a Long Term Evolution (LTE) Positioning Protocol (LPP) or a LTE Positioning Protocol Annex (LPPa).

22. The computer-readable medium of claim 19, wherein the number of downlink receive antennas of the UE for RSTD measurement comprises one of one receiver 1Rx antenna, two receiver 2Rx antennas, or four receiver 4Rx antennas.

23. The computer-readable medium of claim 19, wherein the indicated OTDOA positioning capabilities further include an LTE category of the UE, the LTE category being one of LTE Category 0, LTE Category 1, or LTE Category M.

24. The computer-readable medium of claim 19, wherein the time period for the UE to make the positioning measurements comprises one of a normal delay or an extended delay.

25. The computer-readable medium of claim 19, wherein the signaling comprises an OTDOA-ProvideCapabilities Information Element (IE), and wherein the indicated positioning capabilities of the UE are contained in the OTDOA-ProvideCapabilities IE.

26. The computer-readable medium of claim 19, wherein causing the signaling message to be transmitted to the positioning server comprises transmitting the signaling message to a location management unit corresponding to the positioning server.

27. The computer-readable medium of claim 19, wherein the positioning server is configured to: receiving the signaling message from the UE; Determining, based on the indicated OTDOA positioning capability, that the UE is equipped with a receiver 1Rx antenna for RSTD measurement; and In response to determining that the UE is equipped with 1 Rx antenna for RSTD measurement, an extended measurement delay is configured for the UE for reporting RSTD measurement.

28. A computer program product comprising instructions which, when executed by one or more processors, cause the one or more processors to perform the method according to any one of claims 1 to 9.

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