Method and apparatus for per-band capability reporting and relationship to band-agnostic positioning signals
Through the mechanism of UE measuring the ability report of positioning signals in different frequency bands and the downlink positioning signal resource configuration, the problem of low signaling efficiency and spectrum efficiency in wireless communication systems is solved, and higher network efficiency and coverage are achieved.
Patent Information
- Application Number
- CN202080069693.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2020-07-29
- Filing Date
- 2020-07-30
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2040-07-30
AI Technical Summary
The prior art is difficult to effectively solve the problem of the ability report of UEs in measuring positioning signals in different frequency bands and the configuration of downlink positioning signals resources in wireless communication systems, resulting in low signaling efficiency and spectrum efficiency.
By establishing a capability reporting mechanism between the network entity and the UE, the UE reports its positioning signal measurement capabilities in the first and second frequency bands, and configures downlink positioning signal resources according to these capabilities to ensure effective utilization of resources.
It improves the signaling efficiency and spectrum efficiency of wireless communication systems, reduces waiting time, and enhances the coverage and capacity of the network.
Smart Images

Figure CN114503742B_ABST
Abstract
Description
[0001] CROSS-REFERENCE TO RELATED APPLICATIONS
[0002] This patent application claims priority to Greek Patent Application No. 20190100450, filed on October 10, 2019, entitled “PER-BAND CAPABILITY REPORTING AND RELATION TO BAND-AGNOSTIC POSITIONING SIGNALS,” and U.S. Non-Provisional Patent Application No. 16 / 941,824, filed on July 29, 2020, entitled “PER-BAND CAPABILITY REPORTING AND RELATION TO BAND-AGNOSTIC POSITIONING SIGNALS,” both of which have been assigned to the assignee of this application and are expressly incorporated herein by reference in their entirety. Technical Field
[0003] Aspects of the present disclosure relate generally to wireless communications. Background Art
[0004] Wireless communication systems have evolved over several generations, including first generation analog wireless telephone service (1G), second generation (2G) digital wireless telephone service (including temporary 2.5G networks), third generation (3G) high speed data, Internet-enabled wireless services, and fourth generation (4G) services (e.g., LTE or WiMax). There are many different types of wireless communication systems in use today, including cellular and personal communications service (PCS) systems. Examples of known cellular systems include the cellular analog Advanced Mobile Phone System (AMPS), and digital cellular systems based on code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), Global System for Mobile Communications (GSM), and the like.
[0005] The fifth generation (5G) wireless standard, known as New Radio (NR), enables higher data transfer speeds, more connections, and better coverage, among other improvements. According to the Next Generation Mobile Network Alliance, the 5G standard is designed to provide data rates of tens of megabits per second for each of tens of thousands of users, and 1 gigabit per second for dozens of employees in an office space. Hundreds of thousands of simultaneous connections should be supported in order to support large wireless sensor deployments. Therefore, the spectrum efficiency of 5G mobile communications should be significantly enhanced compared to the current 4G standard. In addition, signaling efficiency should be enhanced and latency should be substantially reduced compared to the current standard. Summary of the invention
[0006] The following presents a simplified summary of one or more aspects disclosed herein. Therefore, the following summary should not be considered as an extensive overview of all contemplated aspects, nor should the following summary be considered as identifying key or important elements related to all contemplated aspects or delineating the scope associated with any particular aspect. Accordingly, the sole purpose of the following summary is to present certain concepts related to one or more aspects of the mechanisms disclosed herein in a simplified form prior to the detailed description presented below.
[0007] In one aspect, a network entity includes a memory, a communication device, and at least one processor communicatively coupled to the memory and the communication device, the at least one processor being configured to: obtain a user equipment (UE) capability report from the UE, the UE capability report including first and second UE capabilities, the first UE capability indicating the UE's ability to measure positioning signals in a first frequency band, the second UE capability indicating the UE's ability to measure positioning signals in a second frequency band, and configure the UE with an indication of one or more downlink positioning signal resources for measurement by the UE based on functions of the first and second UE capabilities, the one or more downlink positioning signal resources being used for transmission of one or more transmit / receive points (TRPs), each downlink positioning signal resource occupying a frequency region that is at least part of the first frequency band or the second frequency band.
[0008] In one aspect, a UE includes a memory, at least one transceiver, and at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor being configured to: cause the transceiver to send a UE capability report to a network entity, the UE capability report including first and second UE capabilities, the first UE capability indicating the UE's capability to measure positioning signals in a first frequency band, the second UE capability indicating the UE's capability to measure positioning signals in a second frequency band, receive from the network entity via the transceiver an indication of one or more downlink positioning signal resources for measurement by the UE based on functions of the first and second UE capabilities, the one or more downlink positioning signal resources for transmission by one or more TRPs, each downlink positioning signal resource occupying a frequency region that is at least part of the first frequency band or the second frequency band, and perform one or more positioning measurements on the one or more downlink positioning signal resources based on the indication.
[0009] In one aspect, a method of wireless communication performed by a network entity includes obtaining a UE capability report from a UE, the UE capability report including first and second UE capabilities, the first UE capability indicating the UE's ability to measure positioning signals in a first frequency band, the second UE capability indicating the UE's ability to measure positioning signals in a second frequency band, and configuring the UE with an indication of one or more downlink positioning signal resources for measurement by the UE based on functions of the first and second UE capabilities, the one or more downlink positioning signal resources for transmission by one or more TRPs, each downlink positioning signal resource occupying a frequency region that is at least part of the first frequency band or the second frequency band.
[0010] In one aspect, a method of wireless communication performed by a UE includes sending a UE capability report to a network entity, the UE capability report including first and second UE capabilities, the first UE capability indicating the UE's ability to measure positioning signals in a first frequency band, the second UE capability indicating the UE's ability to measure positioning signals in a second frequency band, receiving from the network entity via a transceiver an indication of one or more downlink positioning signal resources for measurement by the UE based on functions of the first and second UE capabilities, the one or more downlink positioning signal resources for transmission by one or more TRPs, each downlink positioning signal resource occupying a frequency region that is at least part of the first frequency band or the second frequency band, and performing one or more positioning measurements on the one or more downlink positioning signal resources based on the indication.
[0011] In one aspect, a network entity includes a component for obtaining a UE capability report from a UE, the UE capability report including first and second UE capabilities, the first UE capability indicating the UE's capability to measure positioning signals in a first frequency band, the second UE capability indicating the UE's capability to measure positioning signals in a second frequency band, and a component for configuring the UE with an indication of one or more downlink positioning signal resources for measurement by the UE based on functions of the first and second UE capabilities, the one or more downlink positioning signal resources for transmission by one or more TRPs, each downlink positioning signal resource occupying a frequency region that is at least part of the first frequency band or the second frequency band.
[0012] In one aspect, a UE includes a component for sending a UE capability report to a network entity, the UE capability report including first and second UE capabilities, the first UE capability indicating the UE's capability to measure positioning signals in a first frequency band, the second UE capability indicating the UE's capability to measure positioning signals in a second frequency band, a component for receiving, via a transceiver, an indication of one or more downlink positioning signal resources for measurement by the UE based on the functionality of the first and second UE capabilities, the one or more downlink positioning signal resources for transmission by one or more TRPs, each downlink positioning signal resource occupying a frequency region that is at least part of the first frequency band or the second frequency band, and a component for performing one or more positioning measurements on the one or more downlink positioning signal resources based on the indication.
[0013] In one aspect, a non-transitory computer-readable medium storing computer-executable instructions includes computer-executable instructions, the computer-executable instructions including at least one instruction to instruct a network entity to obtain a UE capability report from a UE, the UE capability report including first and second UE capabilities, the first UE capability indicating the UE's capability to measure positioning signals in a first frequency band, the second UE capability indicating the UE's capability to measure positioning signals in a second frequency band, and at least one instruction to instruct the network entity to configure the UE with an indication of one or more downlink positioning signal resources for measurement by the UE based on functions of the first and second UE capabilities, the one or more downlink positioning signal resources for transmission by one or more TRPs, each downlink positioning signal resource occupying a frequency region that is at least part of the first frequency band or the second frequency band.
[0014] In one aspect, a non-transitory computer-readable medium storing computer-executable instructions includes computer-executable instructions, the computer-executable instructions including at least one instruction to instruct a UE to send a UE capability report to a network entity, the UE capability report including first and second UE capabilities, the first UE capability indicating the UE's ability to measure positioning signals in a first frequency band, the second UE capability indicating the UE's ability to measure positioning signals in a second frequency band, at least one instruction to instruct the UE to receive from the network entity via a transceiver an indication of one or more downlink positioning signal resources for measurement by the UE based on the functionality of the first and second UE capabilities, the one or more downlink positioning signal resources for transmission by one or more TRPs, each downlink positioning signal resource occupying a frequency region that is at least part of the first frequency band or the second frequency band, and at least one instruction to instruct the UE to perform one or more positioning measurements on the one or more downlink positioning signal resources based on the indication.
[0015] Other objects and advantages associated with the aspects disclosed herein will be apparent to those skilled in the art based on the accompanying drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawings are presented to aid in describing various aspects of the present disclosure and are provided solely for purposes of illustration of these aspects and not limitation thereof.
[0017] Figure 1
[0013] Figures illustrate exemplary wireless communication systems in accordance with various aspects of the present disclosure.
[0018] Figure 2A and 2B The diagram illustrates an example wireless network structure in accordance with various aspects of the present disclosure.
[0019] Figures 3A to 3C are simplified block diagrams of several sample aspects of components that may be employed in a UE, a base station, and a network entity, respectively.
[0020] Figure 4A and 4B is a diagram illustrating examples of frame structures and channels within the frame structures according to various aspects of the present disclosure.
[0021] Figure 5 is a diagram illustrating further aspects of positioning reference signal transmission for cells supported by a wireless node.
[0022] Figure 6 is a diagram of an exemplary PRS configuration for PRS transmission for a given base station in accordance with various aspects of the present disclosure.
[0023] Figure 7 The diagram illustrates examples of operating frequency bands for a wireless communication system in accordance with various aspects of the present disclosure.
[0024] Figure 8 The diagram illustrates an example of frequency overlap between operating bands in accordance with various aspects of the present disclosure.
[0025] Fig. 9
[0013] Figures illustrate example information elements for providing basic parameters for downlink carriers in accordance with various aspects of the present disclosure.
[0026] Fig.10
[0026] Figures illustrate diagrams of parameters for specifying bandwidth portions in accordance with various aspects of the present disclosure.
[0027] Fig.11 The diagram illustrates example information elements for configuring a user equipment with information about resources of a signal in accordance with various aspects of the present disclosure.
[0028] Fig.12 Figures illustrate examples of frequency band specific reference signals in accordance with various aspects of the present disclosure.
[0029] Fig.13Figures illustrate examples of frequency band agnostic reference signals in accordance with various aspects of the present disclosure.
[0030] Figures 14 to 17 The diagram illustrates an example method performed by a network entity according to various aspects of the present disclosure.
[0031] Figure 18 to Figure 19 The diagram illustrates an example method performed by a user device according to various aspects of the present disclosure. DETAILED DESCRIPTION
[0032] Aspects of the present disclosure are provided in the following description and in the related drawings for various examples provided for illustrative purposes. Alternative aspects may be designed without departing from the scope of the present disclosure. In addition, well-known elements of the present disclosure will not be described in detail or will be omitted to avoid confusing the relevant details of the present disclosure.
[0033] The words "exemplary" and / or "example" are used herein to mean "serving as an example, instance, or illustration." Any aspect described herein as "exemplary" and / or "example" is not necessarily to be construed as preferred or advantageous over other aspects. Likewise, the term "aspects of the disclosure" does not require that all aspects of the disclosure include the discussed feature, advantage, or mode of operation.
[0034] Those skilled in the art will appreciate that the information and signals described below may be represented using any of a variety of different technologies and techniques. For example, depending in part on the specific application, in part on the desired design, in part on the corresponding technology, etc., data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description below may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0035] In addition, many aspects are described in terms of action sequences to be performed by, for example, elements of a computing device. It will be appreciated that the various actions described herein may be performed by specific circuits (e.g., application specific integrated circuits (ASICs)), by program instructions executed by one or more processors, or by a combination of the two. In addition, the (one or more) action sequences described herein may be considered to be fully embodied in any form of non-transient computer-readable storage medium in which a corresponding set of computer instructions is stored, which, when executed, will cause or instruct the associated processor of the device to perform the functions described herein. Therefore, various aspects of the present disclosure may be embodied in a variety of different forms, all of which are contemplated to be within the scope of the subject matter claimed. In addition, for each of the aspects described herein, the corresponding form of any such aspect may be described herein as, for example, "logic" that is "configured to" perform the described actions.
[0036] As used herein, unless otherwise specified, the terms "user equipment" (UE) and "base station" are not intended to be specific to or otherwise limited to any particular radio access technology (RAT). In general, a UE may be any wireless communication device (e.g., a mobile phone, a router, a tablet computer, a laptop computer, a tracking device, a wearable device (e.g., a smart watch, glasses, an augmented reality (AR) / virtual reality (VR) headset, etc.), a vehicle (e.g., a car, a motorcycle, a bicycle, etc.), an Internet of Things (IoT) device, etc.) used by a user to communicate over a wireless communication network. A UE may be mobile or may be fixed (e.g., at certain times) and may communicate with a radio access network (RAN). As used herein, the term "UE" may be interchangeably referred to as an "access terminal" or "AT", "client device", "wireless device", "subscriber device", "subscriber terminal", "subscriber station", "user terminal" or "UT", "mobile device", "mobile terminal", "mobile station" or variants thereof. In general, a UE may communicate with a core network via a RAN, and through the core network, the UE may be connected to an external network (such as the Internet) and other UEs. Of course, other mechanisms for the UE to connect to the core network and / or the Internet are also possible, such as through a wired access network, a wireless local area network (WLAN) network (eg, based on IEEE 802.11, etc.), and so on.
[0037] Depending on the network in which the base station is deployed, the base station may operate according to one of several RATs communicating with the UE, and may be alternatively referred to as an access point (AP), a network node, a NodeB, an evolved NodeB (eNB), a next generation eNB (ng-eNB), a new radio (NR) NodeB (also referred to as a gNB or gNodeB), etc. The base station may be primarily used to support wireless access for the UE, including supporting data, voice and / or signaling connections for the supported UE. In some systems, the base station may provide a pure edge node signaling function, while in other systems, it may provide additional control and / or network management functions. The communication link through which the UE may send a signal to the base station is referred to as an uplink (UL) channel (e.g., a reverse traffic channel, a reverse control channel, an access channel, etc.). The communication link through which the base station may send a signal to the UE is referred to as a downlink (DL) or forward link channel (e.g., a paging channel, a control channel, a broadcast channel, a forward traffic channel, etc.). As used herein, the term traffic channel (TCH) may refer to an uplink / reverse or downlink / forward traffic channel.
[0038] The term "base station" may refer to a single physical transmit-receive point (TRP) or to multiple physical TRPs that may or may not be co-located. For example, where the term "base station" refers to a single physical TRP, the physical TRP may be an antenna of the base station corresponding to a cell (or several cell sectors) of the base station. Where the term "base station" refers to multiple co-located physical TRPs, the physical TRP may be an antenna array of the base station (e.g., as in a multiple-input multiple-output (MIMO) system or where the base station employs beamforming). Where the term "base station" refers to multiple non-co-located physical TRPs, the physical TRP may be a distributed antenna system (DAS) (a network of spatially separated antennas connected to a common source via a transmission medium) or a remote radio head (RRH) (a remote base station connected to a serving base station). Alternatively, the non-co-located physical TRPs may be a serving base station that receives measurement reports from the UE and a neighboring base station whose reference RF signal (or simply "reference signal") the UE is measuring. Because as used herein, a TRP is the point from which a base station transmits and receives wireless signals, references to transmissions from a base station or receptions at a base station will be understood to refer to the specific TRP of the base station.
[0039] In some implementations of supporting positioning of a UE, a base station may not support wireless access for the UE (e.g., may not support data, voice, and / or signaling connections for the UE), but may instead send a reference signal to the UE for measurement by the UE, and / or may receive and measure a signal sent by the UE. Such a base station may be referred to as a positioning beacon (e.g., when sending a signal to the UE) and / or as a position measurement unit (e.g., when receiving and measuring a signal from the UE).
[0040] "RF signals" include electromagnetic waves of a given frequency that transmit information through the space between a transmitter and a receiver. As used herein, a transmitter may send a single "RF signal" or multiple "RF signals" to a receiver. However, due to the propagation characteristics of RF signals through multipath channels, the receiver may receive multiple "RF signals" corresponding to each transmitted RF signal. The same transmitted RF signal on different paths between a transmitter and a receiver may be referred to as a "multipath" RF signal. As used herein, RF signals may also be referred to as "wireless signals" or simply "signals", where it is clear from the context that the term "signal" refers to either wireless signals or RF signals.
[0041] According to various aspects, Figure 1The figure shows an exemplary wireless communication system 100. The wireless communication system 100 (which may also be referred to as a wireless wide area network (WWAN)) may include various base stations 102 and various UEs 104. The base stations 102 may include macro cell base stations (high power cellular base stations) and / or small cell base stations (low power cellular base stations). In one aspect, the macro cell base stations may include eNBs and / or ng-eNBs (where the wireless communication system 100 corresponds to an LTE network), or gNBs (where the wireless communication system 100 corresponds to an NR network), or a combination of both, and the small cell base stations may include femto cells, pico cells, micro cells, etc.
[0042] The base stations 102 may collectively form a RAN and interface with a core network 170 (e.g., an evolved packet core (EPC) or a 5G core (5GC)) through a backhaul link 122, and interface with one or more location servers 172 (which may be part of the core network 170 or may be external to the core network 170) through the core network 170. The base stations 102 may perform, among other functions, functions related to one or more of: delivering user data, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, non-access stratum (NAS) message distribution, NAS node selection, synchronization, RAN sharing, multimedia broadcast multicast service (MBMS), subscriber and equipment tracking, RAN information management (RIM), paging, positioning, and delivery of warning messages. The base stations 102 may communicate with each other directly or indirectly (e.g., through the EPC / 5GC) through a backhaul link 134, which may be wired or wireless.
[0043] Base station 102 can communicate wirelessly with UE 104. Each of base stations 102 can provide communication coverage for a respective geographic coverage area 110. In one aspect, in each geographic coverage area 110, one or more cells can be supported by base station 102. A "cell" is a logical communication entity used to communicate with a base station (e.g., through some frequency resources, which are called carrier frequencies, component carriers, carriers, frequency bands, etc.), and can be associated with an identifier (e.g., physical cell identifier (PCI), virtual cell identifier (VCI), cell global identifier (CGI)) used to distinguish cells operating via the same or different carrier frequencies. In some cases, different cells can be configured according to different protocol types (e.g., machine type communication (MTC), narrowband Internet of Things (NB-IoT), enhanced mobile broadband (eMBB), etc.) that can provide access to different types of UEs. Because a cell is supported by a specific base station, the term "cell" can refer to one or both of the logical communication entity and the base station that supports it, depending on the context. In addition, because a TRP is typically a physical transmission point of a cell, the terms "cell" and "TRP" can be used interchangeably. In some cases, the term “cell” may also refer to a geographic coverage area (eg, sector) of a base station, as long as a carrier frequency can be detected and used for communications within some portion of the geographic coverage area 110 .
[0044] The geographic coverage areas 110 of neighboring macrocell base stations 102 may partially overlap (e.g., in a handover area), while some of the geographic coverage areas 110 may substantially overlap with a larger geographic coverage area 110. For example, a small cell (SC) base station 102' may have a geographic coverage area 110' that substantially overlaps with the geographic coverage areas 110 of one or more macrocell base stations 102. A network that includes both small cell and macrocell base stations may be referred to as a heterogeneous network. A heterogeneous network may also include a home eNB (HeNB), which may provide services to a restricted group referred to as a closed subscriber group (CSG).
[0045] The communication link 120 between the base station 102 and the UE 104 may include uplink (also referred to as a reverse link) transmissions from the UE 104 to the base station 102 and / or downlink (also referred to as a forward link) transmissions from the base station 102 to the UE 104. The communication link 120 may use MIMO antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. The communication link 120 may be over one or more carrier frequencies. The allocation of carriers may be asymmetric with respect to the downlink and uplink (e.g., more or fewer carriers may be allocated for the downlink than for the uplink).
[0046] The wireless communication system 100 may also include a wireless local area network (WLAN) access point (AP) 150 that communicates with a WLAN station (STA) 152 in an unlicensed frequency spectrum (e.g., 5 GHz) via a communication link 154. When communicating in the unlicensed frequency spectrum, the WLAN STA 152 and / or the WLAN AP 150 may perform a clear channel assessment (CCA) or a listen before talk (LBT) process to determine whether a channel is available before communicating.
[0047] The small cell base station 102' can operate in a licensed and / or unlicensed frequency spectrum. When operating in an unlicensed frequency spectrum, the small cell base station 102' can adopt LTE or NR technology and use the same 5GHz unlicensed frequency spectrum used by the WLAN AP 150. The small cell base station 102' adopting LTE / 5G in the unlicensed frequency spectrum can facilitate coverage of the access network and / or increase the capacity of the access network. NR in the unlicensed spectrum can be referred to as NR-U. LTE in the unlicensed spectrum can be referred to as LTE-U, License Assisted Access (LAA) or MulteFire.
[0048] The wireless communication system 100 may also include a millimeter wave (mmW) base station 180, which can operate in mmW frequencies and / or near mmW frequencies in communication with UE 182. Extremely high frequency (EHF) is part of the RF in the electromagnetic spectrum. The range of EHF is 30GHz to 300GHz, with a wavelength between 1 mm and 10 mm. The radio waves in this band can be called millimeter waves. Near mmW can extend down to a frequency of 3GHz and a wavelength of 100 mm. The super high frequency (SHF) band extends between 3GHz and 30GHz, also known as centimeter waves. Communication using mmW / near mmW radio frequency bands has high path loss and relatively short distances. The mmW base station 180 and UE 182 can utilize beamforming (sending and / or receiving) on the mmW communication link 184 to compensate for extremely high path loss and short distances. In addition, it should be understood that in alternative configurations, one or more base stations 102 may also use mmW or near mmW and beamforming to transmit. Accordingly, it should be understood that the foregoing description is merely exemplary and is not to be construed as limiting the various aspects disclosed herein.
[0049] Transmit beamforming is a technique for focusing an RF signal in a specific direction. Traditionally, when a network node (e.g., a base station) broadcasts an RF signal, it broadcasts the signal in all directions (omnidirectional). With transmit beamforming, the network node determines where a given target device (e.g., a UE) is located (relative to the transmitting network node) and projects a stronger downlink RF signal in that specific direction, thereby providing a faster (in terms of data rate) and stronger RF signal to the (one or more) receiving devices. In order to change the directionality of the RF signal when transmitting, the network node can control the phase and relative amplitude of the RF signal at each of the one or more transmitters that broadcast the RF signal. For example, the network node can use an array of antennas (referred to as a "phased array" or "antenna array") that creates beams of RF waves that can be "guided" to point in different directions without actually moving the antennas. Specifically, the RF current from the transmitter is fed to each antenna in the correct phase relationship so that the radio waves from each antenna are added together to increase the radiation in the desired direction while canceling to suppress the radiation in the undesired direction.
[0050] The transmit beams can be quasi-co-located, which means that they have the same parameters as seen by the receiver (e.g., UE), regardless of whether the transmit antennas of the network nodes themselves are physically co-located. In NR, there are four types of quasi-co-located (QCL) relationships. Specifically, a given type of QCL relationship means that certain parameters about the second reference RF signal on the second beam can be derived from information about the source reference RF signal on the source beam. Therefore, if the source reference RF signal is QCL type A, the receiver can use the source reference RF signal to estimate the Doppler shift, Doppler spread, average delay, and delay spread of the second reference RF signal sent on the same channel. If the source reference RF signal is QCL type B, the receiver can use the source reference RF signal to estimate the Doppler shift and Doppler spread of the second reference RF signal sent on the same channel. If the source reference RF signal is QCL type C, the receiver can use the source reference RF signal to estimate the Doppler shift and average delay of the second reference RF signal sent on the same channel. If the source reference RF signal is QCL type D, the receiver may use the source reference RF signal to estimate spatial reception parameters of a second reference RF signal transmitted on the same channel.
[0051] In receive beamforming, a receiver uses a receive beam to amplify an RF signal detected on a given channel. For example, a receiver may increase a gain setting and / or adjust a phase setting of an antenna array in a particular direction to amplify RF signals received from that direction (e.g., increase its gain level). Thus, when a receiver is stated to be beamforming in a certain direction, this means that the beam gain in that direction is high relative to beam gains along other directions, or that the beam gain in that direction is the highest compared to the beam gains in that direction of all other receive beams available to the receiver. This results in the RF signal received from that direction having a stronger signal strength (e.g., reference signal received power (RSRP), reference signal received quality (RSRQ), signal to interference plus noise ratio (SINR), etc.).
[0052] The receive beams may be spatially correlated. The spatial relationship means that the parameters of the transmit beam for the second reference signal may be derived from information about the receive beam for the first reference signal. For example, the UE may use a specific receive beam to receive one or more reference downlink reference signals (e.g., positioning reference signal (PRS), navigation reference signal (NRS), tracking reference signal (TRS), phase tracking reference signal (PTRS), cell-specific reference signal (CRS), channel state information reference signal (CSI-RS), primary synchronization signal (PSS), secondary synchronization signal (SSS), synchronization signal block (SSB), etc.) from a base station. The UE may then form a transmit beam for sending one or more uplink reference signals (e.g., uplink positioning reference signal (UL-PRS), sounding reference signal (SRS), demodulation reference signal (DMRS), PTRS, etc.) to the base station based on the parameters of the receive beam.
[0053] Note that a "downlink" beam can be a transmit beam or a receive beam, depending on the entity that forms it. For example, if the base station is forming a downlink beam to send a reference signal to the UE, the downlink beam is a transmit beam. However, if the UE is forming a downlink beam, it is a receive beam that receives a downlink reference signal. Similarly, an "uplink" beam can be a transmit beam or a receive beam, depending on the entity that forms it. For example, if the base station is forming an uplink beam, it is an uplink receive beam, while if the UE is forming an uplink beam, it is an uplink transmit beam.
[0054] In 5G, the frequency spectrum in which wireless nodes (e.g., base stations 102 / 180, UEs 104 / 182) operate is divided into multiple frequency ranges, FR1 (from 450 to 6000 MHz), FR2 (from 24250 to 52600 MHz), FR3 (above 52600 MHz), and FR4 (between FR1 and FR2). In a multi-carrier system (such as 5G), one of the carrier frequencies is called the "primary carrier" or "anchor carrier" or "primary serving cell" or "PCell", and the remaining carrier frequencies are called "secondary carriers" or "secondary serving cells" or "SCells". In carrier aggregation, the anchor carrier is the carrier operating on the primary frequency (e.g., FR1) utilized by the UE 104 / 182, and the cell in which the UE 104 / 182 performs an initial radio resource control (RRC) connection establishment procedure or initiates an RRC connection reestablishment procedure. The primary carrier carries all common and UE-specific control channels and can be a carrier in a licensed frequency (however, this is not always the case). A secondary carrier is a carrier operating on a second frequency (e.g., FR2), which can be configured once an RRC connection is established between the UE 104 and the anchor carrier, and can be used to provide additional radio resources. In some cases, the secondary carrier may be a carrier in an unlicensed frequency. The secondary carrier may contain only necessary signaling information and signals, for example, those specific to the UE may not be present in the secondary carrier, because the primary uplink and downlink carriers are typically UE-specific. This means that different UEs 104 / 182 in a cell may have different downlink primary carriers. The same is true for the uplink primary carrier. The network is able to change the primary carrier of any UE 104 / 182 at any time. For example, this is done to balance the load on different carriers. Because a "serving cell" (whether PCell or SCell) corresponds to a carrier frequency / component carrier on which certain base stations are communicating, the terms "cell", "serving cell", "component carrier", "carrier frequency", etc. can be used interchangeably.
[0055] For example, still refer to Figure 1 , one of the frequencies utilized by the macrocell base station 102 may be an anchor carrier (or "PCell"), while the other frequencies utilized by the macrocell base station 102 and / or the mmW base station 180 may be secondary carriers ("SCells"). Simultaneous transmission and / or reception of multiple carriers enables the UE 104 / 182 to significantly increase its data transmission and / or reception rate. For example, two 20 MHz aggregated carriers in a multi-carrier system would theoretically result in a data rate increase of two times (i.e., 40 MHz) compared to the data rate achieved with a single 20 MHz carrier.
[0056] The wireless communication system 100 may also include one or more UEs, such as UE 190, which are indirectly connected to one or more communication networks via one or more device-to-device (D2D) or peer-to-peer (P2P) links. Figure 1 In the example of FIG. 1 , UE 190 has a D2D P2P link 192 with one of UEs 104 connected to one of base stations 102 (e.g., through which UE 190 can indirectly obtain cellular connectivity) and a D2D P2P link 194 with a WLAN STA 152 connected to a WLAN AP 150 (through which UE 190 can indirectly obtain WLAN-based Internet connectivity). In the example, the D2D P2P links 192 and 194 can be supported by any well-known D2D RAT, such as LTE Direct (LTE-D), WiFi Direct (WiFi-D), wait.
[0057] The wireless communication system 100 may also include a UE 164, which may communicate with the macrocell base station 102 via a communication link 120 and / or communicate with the mmW base station 180 via a mmW communication link 184. For example, the macrocell base station 102 may support a PCell and one or more SCells for the UE 164, and the mmW base station 180 may support one or more SCells for the UE 164.
[0058] According to various aspects, Figure 2A The figure shows an example wireless network structure 200. For example, the 5GC 210 (also referred to as the next generation core (NGC)) can be functionally viewed as a control plane function 214 (e.g., UE registration, authentication, network access, gateway selection, etc.) and a user plane function 212 (e.g., UE gateway function, access to data networks, IP routing, etc.), which work together to form a core network. The user plane interface (NG-U) 213 and the control plane interface (NG-C) 215 connect the gNB 222 to the 5GC 210 and specifically to the control plane function 214 and the user plane function 212. In an additional configuration, the ng-eNB 224 can also be connected to the 5GC 210, connected to the control plane function 214 via the NG-C 215 and connected to the user plane function 212 via the NG-C 213. In addition, the ng-eNB 224 can communicate directly with the gNB 222 via the backhaul connection 223. In some configurations, the new RAN 220 may have only one or more gNBs 222, while other configurations include one or more of both ng-eNBs 224 and gNBs 222. The gNB 222 or the ng-eNB 224 may communicate with the UE 204 (e.g., Figure 1204). Another optional aspect may include a location server 230 that can communicate with the 5GC 210 to provide location assistance for the UE 204. The location server 230 may be implemented as multiple separate servers (e.g., physically separate servers, different software modules on a single server, different software modules distributed across multiple physical servers, etc.), or alternatively may each correspond to a single server. The location server 230 may be configured to support one or more location services for the UE 204, which may be connected to the location server 230 via the core network, the 5GC 210, and / or via the Internet (not shown). In addition, the location server 230 may be integrated into a component of the core network, or alternatively may be outside the core network.
[0059] According to various aspects, Figure 2B Another example wireless network structure 250 is shown. For example, the 5GC 260 can be functionally viewed as a control plane function provided by an access and mobility management function (AMF) 264 and a user plane function provided by a user plane function (UPF) 262, which operate in conjunction to form a core network (i.e., the 5GC 260). The user plane interface 263 and the control plane interface 265 connect the ng-eNB 224 to the 5GC 260, and specifically to the UPF 262 and AMF 264, respectively. In an additional configuration, the gNB 222 can also be connected to the 5GC 260, connected to the AMF 264 via the control plane interface 265 and connected to the UPF 262 via the user plane interface 263. In addition, the ng-eNB 224 can communicate directly with the gNB 222 via the backhaul connection 223, whether or not there is a gNB direct connection to the 5GC 260. In some configurations, the new RAN 220 may have only one or more gNBs 222, while other configurations include one or more of both ng-eNBs 224 and gNBs 222. The gNB 222 or the ng-eNB 224 may communicate with the UE 204 (e.g., Figure 1 The base station of the new RAN 220 communicates with the AMF 264 via the N2 interface and communicates with the UPF 262 via the N3 interface.
[0060] The functions of AMF 264 include registration management, connection management, reachability management, mobility management, lawful interception, transmission of session management (SM) messages between UE 204 and session management function (SMF) 266, transparent proxy service for routing SM messages, access authentication and access authorization, transmission of short message service (SMS) messages between UE 204 and short message service function (SMSF) (not shown), and security anchor function (SEAF). AMF 264 also interacts with authentication server function (AUSF) (not shown) and UE 204, and receives intermediate keys established as a result of the UE 204 authentication process. In the case of authentication based on UMTS (Universal Mobile Telecommunications System) Subscriber Identity Module (USIM), AMF 264 retrieves security materials from AUSF. The functions of AMF 264 also include security context management (SCM). SCM receives keys from SEAF, which are used to derive access network specific keys. The functions of AMF 264 also include location service management for regulatory services, transmission of location service messages between UE 204 and location management function (LMF) 270 (which acts as location server 230), transmission of location service messages between new RAN 220 and LMF 270, allocation of evolved packet system (EPS) bearer identifiers for interworking with EPS, and notification of mobility events of UE 204. In addition, AMF 264 also supports functions for non-3GPP access networks.
[0061] The functions of the UPF 262 include acting as an anchor point for intra-RAT / inter-RAT mobility (when applicable), acting as an external protocol data unit (PDU) session point for interconnection with a data network (not shown), providing packet routing and forwarding, packet inspection, user plane policy rule enforcement (e.g., gating, redirection, traffic steering), lawful interception (user plane collection), traffic usage reporting, quality of service (QoS) processing for the user plane (e.g., uplink / downlink rate enforcement, reflective QoS marking in the downlink), uplink traffic verification (service data flow (SDF) to QoS flow mapping), transport layer packet marking in the uplink and downlink, downlink packet buffering and downlink data notification triggering, and issuing and forwarding one or more "end markers" to the source RAN node. The UPF 262 can also support the delivery of location service messages on the user plane between the UE 204 and a location server (such as a secure user plane location (SUPL) location platform (SLP) 272).
[0062] The functions of SMF 266 include session management, UE Internet Protocol (IP) address allocation and management, selection and control of user plane functions, configuration of traffic steering at UPF 262 to route traffic to the correct destination, control of part of policy enforcement and QoS, and downlink data notification. The interface through which SMF 266 communicates with AMF 264 is called the N11 interface.
[0063] Another optional aspect may include an LMF 270 that can communicate with the 5GC 260 to provide location assistance for the UE 204. The LMF 270 can be implemented as multiple separate servers (e.g., physically separate servers, different software modules on a single server, different software modules distributed across multiple physical servers, etc.), or alternatively can each correspond to a single server. The LMF 270 can be configured to support one or more location services for the UE 204, which can be connected to the LMF 270 via the core network, the 5GC 260, and / or via the Internet (not shown). The SLP 272 can support similar functionality to the LMF 270, but the LMF 270 can communicate with the AMF 264, the new RAN 220, and the UE 204 on the control plane (e.g., using interfaces and protocols intended to convey signaling messages rather than voice or data), while the SLP 272 can communicate with the UE 204 and external clients ( Figure 2B ) communications (e.g., using protocols intended to carry voice and / or data, such as the Transmission Control Protocol (TCP) and / or IP).
[0064] Figure 3A , 3B 3C illustrate several exemplary components (represented by corresponding boxes) that may be incorporated into UE 302 (which may correspond to any of the UEs described herein), base station 304 (which may correspond to any of the base stations described herein), and network entity 306 (which may correspond to or embody any of the network functions described herein, including location server 230, LMF 270, and SLP 272) to support file sending operations as taught herein. It should be understood that in different implementations, these components may be implemented in different types of devices (e.g., in an ASIC, in a system on a chip (SoC), etc.). The illustrated components may also be incorporated into other devices in the communication system. For example, other devices in the system may include components similar to those described to provide similar functionality. Likewise, a given device may include one or more of the components. For example, a device may include multiple transceiver components that enable the device to operate on multiple carriers and / or communicate via different technologies.
[0065] UE 302 and base station 304 each include a wireless wide area network (WWAN) transceiver 310 and 350, respectively, which is configured to communicate via one or more wireless communication networks (not shown) (such as NR network, LTE network, GSM network, etc.). WWAN transceivers 310 and 350 can be connected to one or more antennas 316 and 356, respectively, for communicating with other network nodes (such as other UEs, access points, base stations (e.g., ng-eNB, gNB), etc.) via at least one designated RAT (e.g., NR, LTE, GSM, etc.) on a wireless communication medium of interest (e.g., some set of time / frequency resources in a specific frequency spectrum). Depending on the designated RAT, WWAN transceivers 310 and 350 can be configured differently for sending and encoding signals 318 and 358 (e.g., messages, indications, information, etc.), respectively, and conversely, for receiving and decoding signals 318 and 358 (e.g., messages, indications, information, pilots, etc.), respectively. Specifically, the transceivers 310 and 350 include one or more transmitters 314 and 354 for transmitting and encoding signals 318 and 358, respectively, and one or more receivers 312 and 352 for receiving and decoding signals 318 and 358, respectively.
[0066] UE 302 and base station 304 also include, at least in some cases, wireless local area network (WLAN) transceivers 320 and 360, respectively. WLAN transceivers 320 and 360 can be connected to one or more antennas 326 and 366, respectively, for communicating over a wireless communication medium of interest via at least one designated RAT (e.g., WiFi, LTE-D, The WLAN transceivers 320 and 360 may be configured differently to transmit and encode signals 328 and 368 (e.g., messages, indications, information, etc.), respectively, and conversely, to receive and decode signals 328 and 368 (e.g., messages, indications, information, pilots, etc.), respectively, according to the specified RAT. Specifically, the transceivers 320 and 360 include one or more transmitters 324 and 364 for transmitting and encoding signals 328 and 368, respectively, and one or more receivers 322 and 362 for receiving and decoding signals 328 and 368, respectively.
[0067] The transceiver circuitry including at least one transmitter and at least one receiver may include an integrated device (e.g., transmitter circuitry and receiver circuitry embodied as a single communication device) in some implementations, may include separate transmitter devices and separate receiver devices in some implementations, or may be embodied in other ways in other implementations. In one aspect, the transmitter may include or be coupled to multiple antennas (e.g., antennas 316, 326, 356, 366), such as an antenna array, as described herein, which allows the respective devices to perform transmit "beamforming". Similarly, the receiver may include or be coupled to multiple antennas (e.g., antennas 316, 326, 356, 366), such as an antenna array, as described herein, which allows the respective devices to perform receive beamforming. In one aspect, the transmitter and receiver may share the same multiple antennas (e.g., antennas 316, 326, 356, 366) so that the respective devices can only receive or transmit at a given time, rather than both at the same time. The wireless communication devices of the UE 302 and / or the base station 304 (eg, one or both of the transceivers 310 and 320 and / or 350 and 360) may also include a network listening module (NLM) or the like for performing various measurements.
[0068] UE 302 and base station 304 also include, at least in some cases, satellite positioning system (SPS) receivers 330 and 370. SPS receivers 330 and 370 may be connected to one or more antennas 336 and 376, respectively, for receiving SPS signals 338 and 378, respectively, such as global positioning system (GPS) signals, global navigation satellite system (GLONASS) signals, Galileo signals, Beidou signals, Indian regional navigation satellite system (NAVIC), Quasi-Zenith Satellite System (QZSS), etc. SPS receivers 330 and 370 may include any suitable hardware and / or software for receiving and processing SPS signals 338 and 378, respectively. SPS receivers 330 and 370 appropriately request information and operations from other systems, and use measurements obtained by any suitable SPS algorithm to perform calculations necessary to determine the location of UE 302 and base station 304.
[0069] The base station 304 and the network entity 306 each include at least one network interface 380 and 390 for communicating with other network entities. For example, the network interfaces 380 and 390 (e.g., one or more network access ports) can be configured to communicate with one or more network entities via a wired or wireless backhaul connection. In some aspects, the network interfaces 380 and 390 can be implemented as transceivers configured to support wired or wireless signal communications. This communication can involve, for example, sending and receiving messages, parameters, and / or other types of information.
[0070] UE 302, base station 304, and network entity 306 also include other components that can be used in conjunction with the operations disclosed herein. UE 302 includes a processor circuit that implements a processing system 332 for providing functions related to, for example, positioning operations, and for providing other processing functions. Base station 304 includes a processing system 384 for providing functions related to, for example, positioning operations disclosed herein, and for providing other processing functions. Network entity 306 includes a processing system 394 for providing functions related to, for example, positioning operations disclosed herein, and for providing other processing functions. In one aspect, processing systems 332, 384, and 394 may include, for example, one or more general-purpose processors, multi-core processors, ASICs, digital signal processors (DSPs), field programmable gate arrays (FPGAs), or other programmable logic devices or processing circuits.
[0071] UE 302, base station 304, and network entity 306 include memory circuits implementing memory components 340, 386, and 396, respectively (e.g., each including a memory device), for maintaining information (e.g., information indicating reserved resources, thresholds, parameters, etc.). In some cases, UE 302, base station 304, and network entity 306 may include capability managers 342, 388, and 398, respectively. Capability managers 342, 388, and 398 may be hardware circuits that are part of or coupled to processing systems 332, 384, and 394, respectively, which when executed cause UE 302, base station 304, and network entity 306 to perform the functions described herein. In other aspects, capability managers 342, 388, and 398 may be external to processing systems 332, 384, and 394 (e.g., part of a modem processing system, integrated with another processing system, etc.). Alternatively, the capability managers 342, 388, and 398 may be memory modules (eg, Figure 3A -C), which, when executed by the processing systems 332, 384, and 394 (or a modem processing system, another processing system, etc.), causes the UE 302, the base station 304, and the network entity 306 to perform the functions described herein.
[0072] UE 302 may include one or more sensors 344 coupled to processing system 332 to provide movement and / or orientation information independent of the motion data derived from the signals received from WWAN transceiver 310, WLAN transceiver 320, and / or SPS receiver 330. As an example, (one or more) sensors 344 may include an accelerometer (e.g., a micro-electromechanical system (MEMS) device), a gyroscope, a geomagnetic sensor (e.g., a compass), an altimeter (e.g., a barometric altimeter), and / or any other type of motion detection sensor. Moreover, (one or more) sensors 344 may include multiple different types of devices and combine their outputs to provide motion information. For example, (one or more) sensors 344 may use a combination of a multi-axis accelerometer and an orientation sensor to provide the ability to calculate positioning in a 2D and / or 3D coordinate system.
[0073] In addition, the UE 302 includes a user interface 346 for providing indications to the user (e.g., audible and / or visual indications) and / or for receiving user input (e.g., when the user actuates a sensing device (such as a keypad, a touch screen, a microphone, etc.)). Although not shown, the base station 304 and the network entity 306 may also include a user interface.
[0074] Referring to the processing system 384 in more detail, in the downlink, IP packets from the network entity 306 may be provided to the processing system 384. The processing system 384 may implement functions for the RRC layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the Medium Access Control (MAC) layer. The processing system 384 may provide RRC layer functions associated with broadcasting of system information (e.g., master information block (MIB), system information block (SIB)), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-RAT mobility, and measurement configuration for UE measurement reporting; PDCP layer functions associated with header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and handover support functions; RLC layer functions associated with delivery of upper layer packet data units (PDUs), error correction through automatic repeat request (ARQ), concatenation, segmentation and reassembly of RLC service data units (SDUs), re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functions associated with mapping between logical channels and transport channels, scheduling information reporting, error correction, priority handling, and logical channel prioritization.
[0075] The transmitter 354 and the receiver 352 can implement layer 1 functions associated with various signal processing functions. Layer 1, including the physical (PHY) layer, can include error detection on the transmission channel, forward error correction (FEC) encoding / decoding of the transmission channel, interleaving, rate matching, mapping to physical channels, modulation / demodulation of physical channels, and MIMO antenna processing. The transmitter 354 processes the mapping to the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The coded and modulated symbols are then split into parallel streams. Each stream can then be mapped to an orthogonal frequency division multiplexing (OFDM) subcarrier, multiplexed with a reference signal (e.g., pilot) in the time domain and / or frequency domain, and then combined together using an inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time domain OFDM symbol stream. The OFDM stream is spatially precoded to produce multiple spatial streams. Channel estimates from a channel estimator may be used to determine the coding and modulation schemes, as well as for spatial processing. Channel estimates may be derived from reference signals and / or channel condition feedback sent by the UE 302. Each spatial stream may then be provided to one or more different antennas 356. The transmitter 354 may modulate an RF carrier with the corresponding spatial stream for transmission.
[0076] At the UE 302, the receiver 312 receives the signal through its respective (one or more) antennas 316. The receiver 312 recovers the information modulated onto the RF carrier and provides the information to the processing system 332. The transmitter 314 and the receiver 312 implement layer 1 functions associated with various signal processing functions. The receiver 312 can perform spatial processing on the information to recover any spatial stream destined for the UE 302. If multiple spatial streams are destined for the UE 302, they can be combined into a single OFDM symbol stream by the receiver 312. The receiver 312 then converts the OFDM symbol stream from the time domain to the frequency domain using a fast Fourier transform (FFT). The frequency domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. By determining the most likely signal constellation point sent by the base station 304, the symbols and reference signals on each subcarrier are recovered and demodulated. These soft decisions can be based on channel estimates calculated by a channel estimator. The soft decisions are then decoded and deinterleaved to recover the data and control signals originally sent on the physical channel by the base station 304. The data and control signals are then provided to a processing system 332 that implements layer 3 and layer 2 functionality.
[0077] In the uplink, the processing system 332 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover IP packets from the core network. The processing system 332 is also responsible for error detection.
[0078] Similar to the functions described in conjunction with downlink transmission of base station 304, processing system 332 provides RRC layer functions associated with system information (e.g., MIB, SIB) acquisition, RRC connection, and measurement reporting; PDCP layer functions associated with header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); RLC layer functions associated with delivery of upper layer PDUs, error correction through ARQ, concatenation, segmentation and reassembly of RLC SDUs, resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functions associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs to transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through hybrid automatic repeat request (HARQ), priority handling, and logical channel prioritization.
[0079] Channel estimates derived by a channel estimator from a reference signal or feedback sent by base station 304 may be used by transmitter 314 to select an appropriate codec and modulation scheme, as well as to facilitate spatial processing. The spatial streams generated by transmitter 314 may be provided to different antenna(s) 316. Transmitter 314 may modulate an RF carrier with a corresponding spatial stream for transmission.
[0080] The uplink transmission is processed at the base station 304 in a manner similar to that described in conjunction with the receiver functionality at the UE 302. The receiver 352 receives the signal through its respective antenna(s) 356. The receiver 352 recovers the information modulated onto the RF carrier and provides the information to the processing system 384.
[0081] In the uplink, the processing system 384 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover IP packets from the UE 302. The IP packets from the processing system 384 may be provided to the core network. The processing system 384 is also responsible for error detection.
[0082] For convenience, UE 302, base station 304 and / or network entity 306 may Figure 3A -C is shown as including various components that can be configured according to various examples described herein. However, it should be understood that the blocks shown may have different functions in different designs.
[0083] The various components of the UE 302, base station 304, and network entity 306 may communicate with each other via data buses 334, 382, and 392, respectively. Figure 3A -C components can be implemented in various ways. In some implementations, Figure 3A -C components may be implemented in one or more circuits, such as, for example, one or more processors and / or one or more ASICs (which may include one or more processors). Here, each circuit may use and / or incorporate at least one memory component for storing information or executable code used by the circuit to provide this function. For example, some or all of the functions represented by blocks 310 to 346 may be implemented by the processor and (one or more) memory components of UE 302 (e.g., by executing appropriate codes and / or by appropriate configuration of processor components). Similarly, some or all of the functions represented by blocks 350 to 388 may be implemented by the processor and (one or more) memory components of base station 304 (e.g., by executing appropriate codes and / or by appropriate configuration of processor components). Similarly, some or all of the functions represented by blocks 390 to 398 may be implemented by the processor and (one or more) memory components of network entity 306 (e.g., by executing appropriate codes and / or by appropriate configuration of processor components). For simplicity, various operations, actions and / or functions are described herein as being performed by "UE", "by base station", "by positioning entity", etc. However, as will be appreciated, such operations, actions and / or functions may actually be performed by a specific component or combination of components of the UE, base station, positioning entity, etc. (such as processing systems 332, 384, 394, transceivers 310, 320, 350 and 360, memory components 340, 386 and 396, capability managers 342, 388 and 398, etc.).
[0084] NR supports a variety of cellular network-based positioning technologies, including downlink-based, uplink-based, and downlink- and uplink-based positioning methods. Downlink-based positioning methods include observed time difference of arrival (OTDOA) in LTE, downlink time difference of arrival (DL-TDOA) in NR, and downlink angle of departure (DL-AoD) in NR. In the OTDOA or DL-TDOA positioning process, the UE measures the difference between the arrival time (ToA) of the reference signals (e.g., PRS, TRS, CSI-RS, SSB, etc.) received from paired base stations, which is called reference signal time difference (RSTD) or arrival time difference (TDOA) measurement, and reports them to the positioning entity. More specifically, the UE receives identifiers of a reference base station (e.g., a serving base station) and multiple non-reference base stations in the auxiliary data. The UE then measures the RSTD between the reference base station and each of the non-reference base stations. Based on the known positions of the base stations involved and the RSTD measurements, the positioning entity can estimate the position of the UE. For DL-AoD positioning, a base station measures the angle of a downlink transmit beam used to communicate with a UE and other channel properties (eg, signal strength) to estimate the position of the UE.
[0085] Uplink-based positioning methods include uplink time difference of arrival (UL-TDOA) and uplink angle of arrival (UL-AoA). UL-TDOA is similar to DL-TDOA, but is based on uplink reference signals (e.g., SRS) transmitted by the UE. For UL-AoA positioning, the base station measures the angle of the uplink receive beam used to communicate with the UE and other channel properties (e.g., gain level) to estimate the UE's position.
[0086] Downlink and uplink-based positioning methods include enhanced cell ID (E-CID) positioning and multi-round trip time (RTT) positioning (also referred to as "multi-cell RTT"). In the RTT process, the initiator (base station or UE) sends an RTT measurement signal (e.g., PRS or SRS) to the responder (UE or base station), and the responder sends an RTT response signal (e.g., SRS or PRS) back to the initiator. The RTT response signal includes the difference between the ToA of the RTT measurement signal and the transmission time of the RTT response signal, which is called the received to send (Rx-Tx) measurement. The initiator calculates the difference between the transmission time of the RTT measurement signal and the ToA of the RTT response signal, which is called the "Tx-Rx" measurement. The propagation time (also referred to as "flight time") between the initiator and the responder can be calculated based on the Tx-Rx and Rx-Tx measurements. Based on the propagation time and the known speed of light, the distance between the initiator and the responder can be determined. For multi-RTT positioning, the UE performs an RTT process with multiple base stations so that its position can be triangulated based on the known positions of the base stations. RTT and multi-RTT methods can be combined with other positioning techniques (such as UL-AoA and DL-AoD) to improve location accuracy.
[0087] The E-CID positioning method is based on radio resource management (RRM) measurements. In E-CID, the UE reports the serving cell ID, timing advance (TA), and the identifiers, estimated timing and signal strength of detected neighboring base stations. The UE's position is then estimated based on this information and the known positions of the base stations.
[0088] To assist the positioning operation, a location server (e.g., location server 230, LMF 270) may provide assistance data to the UE. For example, the assistance data may include an identifier of a base station (or a cell / TRP of a base station) from which a reference signal is to be measured, reference signal configuration parameters (e.g., the number of consecutive positioning slots, the periodicity of the positioning slots, a silent sequence, a frequency hopping sequence, a reference signal identifier (ID), a reference signal bandwidth, a slot offset, etc.), and / or other parameters applicable to a particular positioning method. Alternatively, the assistance data may originate directly from the base station itself (e.g., in a periodically broadcast overhead message, etc.). In some cases, the UE may be able to detect neighboring network nodes on its own without using assistance data.
[0089] The position estimate may be referred to by other names, such as position estimate, position, position fix, position fix, fix, etc. The position estimate may be geodetic and include coordinates (e.g., latitude, longitude, and possibly altitude) or may be urban and include a street address, postal address, or some other verbal description of the location. The position estimate may also be defined relative to some other known location, or in absolute terms (e.g., using latitude, longitude, and possibly altitude). The position estimate may include expected errors or uncertainties (e.g., by including an area or volume in which the location is expected to be included with some specified or default confidence level).
[0090] Various frame structures may be used to support downlink and uplink transmissions between network nodes (eg, base stations and UEs). Figure 4A is a diagram 400 illustrating an example of a downlink frame structure according to aspects of the present disclosure. Figure 4B is a diagram 430 illustrating an example of channels within a downlink frame structure according to aspects of the present disclosure. Other wireless communication technologies may have different frame structures and / or different channels.
[0091] LTE (and in some cases NR) uses OFDM on the downlink and single carrier frequency division multiplexing (SC-FDM) on the uplink. However, unlike LTE, NR can also choose to use OFDM on the uplink. OFDM and SC-FDM divide the system bandwidth into multiple (K) orthogonal subcarriers, which are often also called frequency tones, bins, etc. Each subcarrier can be modulated with data. In general, modulation symbols are sent in the frequency domain with OFDM and in the time domain with SC-FDM. The spacing between adjacent subcarriers can be fixed, while the total number of subcarriers (K) can depend on the system bandwidth. For example, the spacing of subcarriers can be 15kHz, and the minimum resource allocation (resource block) can be 12 subcarriers (or 180kHz). Therefore, for system bandwidths of 1.25, 2.5, 5, 10, or 20 megahertz (MHz), the nominal FFT size can be equal to 128, 256, 512, 1024, or 2048, respectively. The system bandwidth can also be divided into subbands. For example, a subband may cover 1.08 MHz (ie, 6 resource blocks), so there may be 1, 2, 4, 8, or 16 subbands for system bandwidths of 1.25, 2.5, 5, 10, or 20 MHz, respectively.
[0092] LTE supports a single numerology (subcarrier spacing, symbol length, etc.). In contrast, NR can support multiple numerologies (μ), for example, 15kHz, 30kHz, 60kHz, 120kHz, and 240kHz or larger subcarrier spacing may be available. Table 1 provided below lists some of the different parameters used for different NR numerologies.
[0093]
[0094]
[0095] Table 1
[0096] exist Figure 4A and 4B In the example of , a parameter set of 15 kHz is used. Therefore, in the time domain, a frame (e.g., 10 milliseconds (ms)) is divided into 10 equally sized subframes, each subframe is 1 ms, and each subframe includes a time slot. Figures 4A to 4B In a 3D image, time is represented horizontally (eg, on the X-axis), where time increases from left to right, and frequency is represented vertically (eg, on the Y-axis), where frequency increases (or decreases) from bottom to top.
[0097] A resource grid may be used to represent a time slot, each of which includes one or more time concurrent resource blocks (RBs) (also referred to as physical RBs (PRBs)) in the frequency domain. A resource grid is divided into a plurality of resource elements (REs). An RE may correspond to one symbol length in the time domain and one subcarrier in the frequency domain. Figure 4A and 4B In the parameter set of , for a normal cyclic prefix, an RB can contain 12 consecutive subcarriers in the frequency domain and seven consecutive symbols in the time domain, with a total of 84 REs. For an extended cyclic prefix, an RB can contain 12 consecutive subcarriers in the frequency domain and six consecutive symbols in the time domain, with a total of 72 REs. The number of bits carried by each RE depends on the modulation scheme.
[0098] Some REs carry downlink reference (pilot) signals (DL-RS). DL-RS may include PRS in LTE, NRS, TRS, PTRS, CRS, CSI-RS, DMRS, PSS, SSS, SSB, etc. in 5G. Figure 4A The figure shows exemplary locations of REs carrying PRS (labeled "R").
[0099] A group of resource elements (REs) used for transmission of PRS is referred to as a "PRS resource". A group of resource elements may span multiple PRBs in the frequency domain, and "N" (e.g., 1 or more) consecutive symbols within a slot in the time domain. In a given OFDM symbol in the time domain, a PRS resource occupies consecutive PRBs in the frequency domain.
[0100] The transmission of PRS resources within a given PRB has a specific comb size (also referred to as "comb density"). The comb size "N" represents the subcarrier spacing (or frequency / tone spacing) within each symbol of the PRS resource configuration. Specifically, for comb size "N", the PRS is transmitted in every Nth subcarrier of the symbol of the PRB. For example, for comb-4, for each of the four symbols of the PRS resource configuration, the RE corresponding to every fourth subcarrier (e.g., subcarriers 0, 4, 8) is used to transmit the PRS of the PRS resource. Currently, DL-PRS supports comb sizes of comb-2, comb-4, comb-6, and comb-12. Figure 4A The figure shows an exemplary PRS resource configuration for Comb-6 (which spans six symbols). That is, the positions of the shaded REs (labeled as "R") indicate the Comb-6 PRS resource configuration.
[0101] A "PRS resource set" is a set of PRS resources used for transmission of a PRS signal, where each PRS resource has a PRS resource ID. In addition, the PRS resources in a PRS resource set are associated with the same TRP. A PRS resource set is identified by a PRS resource set ID and is associated with a specific TRP (identified by a cell ID). In addition, the PRS resources in a PRS resource set have the same periodicity, a common muting pattern configuration, and the same repetition factor (e.g., PRS-ResourceRepetitionFactor) across time slots. The periodicity can have a value from 2 to 1. μ · A length selected from {4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 640, 1280, 2560, 5120, 10240} slots, where μ = 0, 1, 2, 3. The repetition factor may have a length selected from {1, 2, 4, 6, 8, 16, 32} slots.
[0102] The PRS resource ID in a PRS resource set is associated with a single beam (and / or beam ID) transmitted from a single TRP (where a TRP may transmit one or more beams). That is, each PRS resource in a PRS resource set may be transmitted on a different beam, and as such, a "PRS resource" or simply "resource" may also be referred to as a "beam". Note that this has no effect on whether the TRP and the beam transmitting the PRS are known to the UE.
[0103] A "PRS instance" or "PRS opportunity" is an instance of a periodically repeating time window (e.g., a group of one or more consecutive time slots) in which a PRS is expected to be transmitted. A PRS opportunity may also be referred to as a "PRS positioning opportunity", "PRS positioning instance", "positioning opportunity", "positioning instance", "positioning repetition", or simply "opportunity", "instance" or "repetition".
[0104] A "positioning frequency layer" (also referred to simply as a "frequency layer") is a group of one or more PRS resource sets across one or more TRPs that have the same values for certain parameters. Specifically, the group of PRS resource sets has the same subcarrier spacing (SCS) and cyclic prefix (CP) type (meaning that all parameter sets supported for PDSCH are also supported for PRS), the same point A, the same downlink PRS bandwidth value, the same starting PRB (and center frequency), and the same comb size. The point A parameter takes the value of the parameter ARFCN-ValueNR (where "ARFCN" stands for "Absolute Radio Frequency Channel Number") and is an identifier / code that specifies a pair of physical radio channels for transmission and reception. The downlink PRS bandwidth can have a granularity of 4 PRBs, with a minimum of 24 PRBs and a maximum of 272 PRBs. Currently, up to four frequency layers have been defined, and up to two PRS resource sets can be configured per frequency layer and per TRP.
[0105] Figure 4B The figure shows an example of various channels within a downlink timeslot of a radio frame. In NR, the channel bandwidth or system bandwidth is divided into multiple bandwidth parts (BWPs). A BWP is a contiguous set of PRBs selected from a contiguous subset of common RBs for a given parameter set on a given carrier. Typically, up to four BWPs can be specified in the downlink and uplink. That is, a UE can be configured with up to four BWPs on the downlink and up to four BWPs on the uplink. Only one BWP (uplink or downlink) can be active at a given time, which means that the UE can only receive or transmit through one BWP at a time. On the downlink, the bandwidth of each BWP should be equal to or greater than the bandwidth of the SSB, but it may or may not contain the SSB.
[0106] refer to Figure 4B, the primary synchronization signal (PSS) is used by the UE to determine the subframe / symbol timing and the physical layer identification. The secondary synchronization signal (SSS) is used by the UE to determine the physical layer cell identification group number and the radio frame timing. Based on the physical layer identification and the physical layer cell identification group number, the UE can determine the PCI. Based on the PCI, the UE can determine the location of the above-mentioned DL-RS. The physical broadcast channel (PBCH) carrying the MIB can be logically grouped with the PSS and SSS to form an SSB (also referred to as SS / PBCH). The MIB provides the number of RBs in the downlink system bandwidth and the system frame number (SFN). The physical downlink shared channel (PDSCH) carries user data, broadcast system information (such as system information blocks (SIBs)) that is not sent through the PBCH, and paging messages.
[0107] The physical downlink control channel (PDCCH) carries downlink control information (DCI) in one or more control channel elements (CCEs), each CCE includes one or more RE group (REG) bundles (which can span multiple symbols in the time domain), each REG bundle includes one or more REGs, each REG corresponds to 12 resource elements (a resource block) in the frequency domain and one OFDM symbol in the time domain. The set of physical resources used to carry PDCCH / DCI is called the control resource set (CORESET) in NR. In NR, PDCCH is confined to a single CORESET and is transmitted with its own DMRS. This enables UE-specific beamforming for PDCCH.
[0108] exist Figure 4B In the example of , there is one CORESET per BWP, and the CORESET spans three symbols in the time domain. Unlike the LTE control channel that occupies the entire system bandwidth, in NR, the PDCCH channel is located in a specific area (i.e., CORESET) in the frequency domain. Therefore, Figure 4B The frequency components of the PDCCH shown in are shown as being smaller than a single BWP in the frequency domain. Note that although the CORESETs shown are contiguous in the frequency domain, they need not be so. Additionally, a CORESET may span less than three symbols in the time domain.
[0109] The DCI within the PDCCH carries information about uplink resource allocation (persistent and non-persistent) and a description of the downlink data sent to the UE. Multiple (e.g., up to eight) DCIs can be configured in the PDCCH, and these DCIs can have one of a variety of formats. For example, there are different DCI formats for uplink scheduling, non-MIMO downlink scheduling, MIMO downlink scheduling, and uplink power control. The PDCCH can be transmitted by 1, 2, 4, 8, or 16 CCEs to accommodate different DCI payload sizes or codec rates.
[0110] Please note that in LTE systems, the terms "positioning reference signal" and "PRS" sometimes refer to specific reference signals used for positioning. However, as used herein, unless otherwise indicated, the terms "positioning reference signal" and "PRS" refer to any type of reference signal that can be used for positioning, such as but not limited to PRS in LTE, NRS in 5G, TRS, PTRS, CRS, CSI-RS, DMRS, PSS, SSS, SSB, SRS, UL-PRS, etc. In addition, unless otherwise indicated, the terms "positioning reference signal" and "PRS" refer to downlink or uplink positioning reference signals. Downlink positioning reference signals may be referred to as "DL-PRS", while uplink positioning reference signals (e.g., SRS, PTRS for positioning) may be referred to as "UL-PRS". In addition, for signals (e.g., DMRS, PTRS) that can be sent in both uplink and downlink, "UL" or "DL" may be prefixed to the signal to distinguish the direction. For example, "UL-DMRS" may be distinguished from "DL-DMRS".
[0111] There are currently two alternatives for periodic PRS resource allocation. The first alternative is that the periodicity of the downlink PRS resource is configured at the downlink PRS resource set level. In this case, a common period is used for the downlink PRS resources within the downlink PRS resource set. The second alternative is that the periodicity of the downlink PRS resource is configured at the downlink PRS resource level. In this case, different periods can be used for the downlink PRS resources within the downlink PRS resource set.
[0112] Figure 5 An exemplary PRS configuration 500 for a cell / TRP supported by a wireless node (eg, a base station) is shown. Figure 5 It shows how the PRS positioning opportunity is determined by the system frame number (SFN), cell-specific subframe offset (Δ PRS )552 and PRS periodicity (T PRS) 520. Typically, the cell-specific PRS subframe configuration is determined by a PRS configuration index (I PRS ) definition. PRS periodicity (T PRS )520 and cell-specific subframe offset (Δ PRS ) Based on the PRS configuration index (I PRS ) are defined as shown in Table 2 below.
[0113]
[0114]
[0115] Table 2
[0116] The PRS configuration is defined with reference to the SFN of the cell that transmits the PRS. PRS The first subframe of a downlink subframe, the PRS instance may satisfy:
[0117]
[0118] Where n f is SFN, where 0≤n f ≤1023, n s By n f The timeslot number within a defined radio frame, where 0 ≤ n s ≤19, T PRS is the PRS periodicity 520, and Δ PRS It is the cell-specific subframe offset 552.
[0119] like Figure 5 As shown, the cell-specific subframe offset (Δ PRS ) 552 may be defined based on the number of subframes transmitted starting from SFN 0 ("time slot number = 0", denoted as time slot 550) to the start of the first (subsequent) PRS positioning opportunity. Figure 5 In the example of FIG. 5 , the number of consecutive positioning subframes (N) in each of the consecutive PRS positioning opportunities 518a, 518b, and 518c is PRS ) is equal to 4. Note that although N PRS The number of consecutive positioning subframes per opportunity may be specified, but based on the implementation, it may instead specify the number of consecutive positioning slots. For example, in LTE, N PRS Specifies the number of consecutive positioning subframes per opportunity, while in NR, N PRS Specifies the number of consecutive positioning slots per opportunity.
[0120] In some aspects, when a UE receives a PRS configuration index I in positioning assistance data for a particular cell,PRS When the UE can use Table 2 to determine the PRS periodicity (T PRS )520 and PRS subframe offset Δ PRS The UE may then determine the radio frames, subframes, and time slots when the PRS is scheduled in the cell (e.g., using the equations above). Positioning assistance data may be determined, for example, by a location server and include assistance data for a reference cell, and the number of neighboring cells supported by various wireless nodes.
[0121] Typically, PRS opportunities from all cells in the network using the same frequency are aligned in time and may have a fixed known time offset (e.g., cell-specific subframe offset 552) relative to other cells in the network using different frequencies. In an SFN-synchronized network, all wireless nodes (e.g., base stations) may be aligned on both frame boundaries and system frame numbers. Thus, in an SFN-synchronized network, all cells supported by various wireless nodes may use the same PRS configuration index I for any particular frequency of PRS transmission. PRS On the other hand, in an SFN asynchronous network, various wireless nodes may be aligned on frame boundaries instead of system frame numbers. Therefore, in an SFN asynchronous network, the PRS configuration index I for each cell is PRS It can be configured solely by the network so that the PRS opportunities are aligned in time.
[0122] If the UE is able to obtain the cell timing (e.g., SFN) of at least one of the cells (such as a reference cell or a serving cell), the UE can determine the timing of the PRS opportunities of the reference cell and the neighboring cells for positioning. The timing of other cells can then be derived by the UE based on the assumption that, for example, PRS opportunities from different cells overlap.
[0123] For LTE systems, the sequence of subframes used to send PRS (e.g., for positioning) can be characterized and defined by multiple parameters, including: (i) a reserved block of bandwidth (BW), (ii) a PRS configuration index I PRS , (iii) duration N PRS , (iv) optional silence pattern, and (v) silence sequence periodicity T REP (When present, it may be implicitly included in (iv) as part of the muting pattern.) In some cases, where the PRS duty cycle is quite low, N PRS =1,T PRS = 160 subframes (equivalent to 160 ms), and BW = 1.4, 3, 5, 10, 15 or 20 MHz. To increase the PRS duty cycle, N PRS The value can be increased to six (ie, N PRS=6) and the BW value can be increased to the system bandwidth (ie, in the case of LTE, BW = LTE system bandwidth). PRS (e.g., greater than six) and / or shorter T PRS (e.g., less than 160 ms) (until the full duty cycle (i.e., N PRS =T PRS )) can also be used in subsequent versions of the LTE Positioning Protocol (LPP). The directional PRS can be configured as just described and can, for example, use a low PRS duty cycle (e.g., N PRS =1,T PRS =160 subframes) or high duty cycle.
[0124] Figure 6 is a diagram of an exemplary PRS configuration 600 for PRS transmission by a given base station according to aspects of the present disclosure. Figure 6 , time is represented horizontally, increasing from left to right. Each long rectangle represents a time slot, and each short (shaded) rectangle represents an OFDM symbol. The PRS configuration 600 identifies PRS resources 612 and 614 of a PRS resource set 610 during which a base station transmits a PRS. The PRS resource set 610 has an opportunity length N of two (2) time slots. PRS and T PRS Thus, both PRS resources 612 and 614 are two consecutive time slots in length and are repeated every T, starting from the time slot in which the first symbol of the corresponding PRS resource appears. PRS The subframe is repeated once.
[0125] exist Figure 6 In the example of FIG. 1 , the PRS resource set 610 includes two PRS resources, a first PRS resource 612 (in Figure 6 ) and a second PRS resource 614 (in Figure 6 612 and PRS resource 614 may be transmitted on separate beams of the same base station. PRS resource 612 has a symbol length N of two (2) symbols. symb , and the PRS resource 614 has a symbol length N of four (4) symbols. symb .
[0126] Each instance of the PRS resource set 610 (illustrated as instances 630a, 630b, and 630c) includes a length of "2" opportunities (ie, N PRS =2). PRS resources 612 and 614 per T PRSsubframes are repeated until the silent sequence periodicity T REP . In this case, a length of T will be required REP A bitmap is used to indicate which opportunities of instances 630a, 630b, and 630c are silenced.
[0127] In one aspect, there may be a need for PRS configurations such as Figure 6 For example, for all PRS resources (e.g., PRS resources 612, 614) of a PRS resource set (e.g., PRS resource set 610), the base station may configure the following parameters to be the same: (a) opportunity length (e.g., T PRS ), (b) the number of symbols (e.g., N symb ), (c) comb type, and / or (d) bandwidth. In addition, for all PRS resources of all PRS resource sets, the subcarrier spacing and cyclic prefix can be configured to be the same for one base station or for all base stations. Whether it is for one base station or for all base stations may depend on the ability of the UE to support the first option and / or the second option.
[0128] As briefly described above, in 5G, the available frequency spectrum is divided into frequency ranges "FR1" (from 450 to 6000 MHz), "FR2" (from 24250 to 52600 MHz), "FR3" (above 52600 MHz) and "FR4" (between FR1 and FR2). Within each frequency range, multiple frequency bands are defined (identified by corresponding band IDs). For example, Figure 7 is a table 700 illustrating several frequency bands in FR1 along with their operating frequencies. In 5G, some frequency bands may overlap (ie, conflict) in frequency, such as Figure 8 shown. Figure 8 is a table 800 illustrating various frequency bands in FR1 and FR2 that overlap with other frequency bands. For example, frequency band "n1" at least partially overlaps with frequency bands "n2," "n25," and "n66."
[0129] The UE may be configured by the network (e.g., serving TRP, location server 230, LMF 270, SLP 272, etc.) with a frequency band specific component carrier (CC) indication. For example, Fig. 9The figure shows a FrequencyInfoDL (Frequency Information DL) information element (IE) 900, which can be used in 5G to provide basic parameters for the downlink component carrier. FrequencyInfoDL IE 900 includes the parameter absoluteFrequencyPointA, which provides the absolute frequency location (e.g., absolute reference frequency channel number (ARFCN)) of a reference resource block (referred to as "common RB 0"). Its lowest subcarrier is also referred to as "Point A". Note that the lower edge of the actual carrier is not defined by this field, but is defined in the scs-SpecificCarrierList.
[0130] The parameter absoluteFrequencySSB provides the frequency of the SSB used for this serving cell. Unless otherwise specified, the SSB-related parameters (e.g., SSB index) provided for the serving cell refer to this SSB frequency. The SSB defined by the cell of the PCell is always on the synchronization grid. If the frequency can also be identified by a GSCN value, the frequency is considered to be on the synchronization grid. If this field is not present, the SSB-related parameters should not be present (e.g., ssb-PositionInBurst, ssb-periodicityServingCell, and subcarrierSpacing in the ServingCellConfigCommon IE). If this field is not present, the UE obtains the timing reference from the primary secondary cell (SpCell). This is only supported if the Scell is in the same frequency band as the SpCell.
[0131] The parameter frequencyBandList is a list of unique frequency bands to which the particular component carrier(s) belong. Multiple values are not supported.
[0132] Fig.10 FIG1000 is a diagram illustrating an example of how a UE may be configured with information for a specific BWP according to aspects of the present disclosure. The resources of each BWP in the frequency domain may be described by the following three parameters: (1) CRB0, which serves as point A, (2) which is the frequency offset from point A and defines the start of BWP k, and It is the size (ie, bandwidth) of BWP k.
[0133] Fig.11The figure shows an exemplary MeasObjectNR IE 1100 for configuring a UE with information about the resources of a CSI-RS for a TRP in 5G NR to enable the UE to perform RRM measurements. Fig.11 As shown, the parameter refFreqCSI-RS plays the role of point A, i.e., provides an absolute frequency reference point. Similarly, the parameter referenceSignalConfig plays the role of indicating the frequency offset of the start of the CSI-RS resource in the frequency domain. The parameter freqBandIndicatorNR indicates the frequency band in which the SSB and / or CSI-RS indicated in this MeasObjectNR IE 1100 are located, and the UE is expected to perform RRM measurements accordingly. This field is always provided when the network configures the measurement with the MeasObjectNR IE 1100.
[0134] Note that the freqBandIndicatorNR parameter indicates the frequency band to which a particular CSI-RS belongs. In other words, the CSI-RS is frequency band specific. Fig.12 is shown in FIG, where it is assumed that the CSI-RS transmitted from a specific TRP occupies two frequency bands (in Fig.12 The resources at the intersection of the CSI-RS (labeled as "Band 1" and "Band 2") in the figure. When a network entity (e.g., a location server, LMF, etc.) configures the UE with the CSI-RS shown in the figure, the network entity notifies the UE of point A (e.g., refFreqCSI-RS), the starting PRB (i.e., the frequency offset from point A, e.g., referenceSignalConfig), and the bandwidth (BW). Since the CSI-RS is band-specific, the network entity also notifies the UE whether the CSI-RS belongs to the first band ("Band 1") or the second band ("Band 2") (e.g., through freqBandIndicatorNR). This is because the UE can apply different filters when processing signals of different frequency bands. That is, the filter applied when processing Band 1 signals can be different from the filter applied when processing Band 2 filters.
[0135] However, for positioning purposes, it may be preferred that the positioning signal itself (e.g., PRS) is frequency band agnostic. That is, the bandwidth of the positioning signal does not have to belong to any particular frequency band. For example, the bandwidth of a positioning signal (such as a PRS) may span any number of defined frequency bands and / or may be in the overlapping region of multiple frequency bands, such as Fig.13As shown. One reason for the preference for band agnosticism is that positioning accuracy increases with increasing bandwidth. If the bandwidth of the positioning signal is band specific (i.e., bound to a specific frequency band), the positioning accuracy may become limited because its bandwidth may be limited. By making the positioning signal band agnostic, the bandwidth of the positioning signal can be adjusted to achieve the desired positioning accuracy.
[0136] Of course, it is contemplated that in some cases, a relatively narrow bandwidth may be sufficient to achieve the desired positioning accuracy, such that the positioning signal is entirely within a single frequency band. But even in these cases, a frequency band agnostic approach may still be used to specify the positioning signal.
[0137] When sending positioning signals from a TRP, the capabilities of the UE should be considered. For example, if the UE is capable of measuring positioning signals across four consecutive PRBs, then it may be a waste of resources for the TRP to send positioning signals across six PRBs.
[0138] Typically, a UE may report its ability to measure one or more reference signals from a TRP. Likewise, the capability may be band specific. For example, Figure 7 , the UE may report that in band 77 it is able to measure PRS signals across four PRBs sent from a TRP, and in band n78 it is able to measure PRS signals across six PRBs. If the PRS is configured in a region where bands n77 and n78 intersect, there is ambiguity as to which of the UE capabilities applies - the capability for four PRBs or the capability for six PRBs. Thus, the question arises as to what UE capabilities regarding positioning signals the network entity should assume for configured downlink positioning signals sent in a region where two or more bands intersect.
[0139] To address this and other issues, two options are proposed. In the first option, the network entity can select which of the UE capabilities applies to the intersection. In other words, the network entity can decide the "applied UE capabilities" based on the reported UE capabilities. In the second option, the UE itself can resolve the ambiguity by reporting the capabilities that apply to the intersection of the frequency bands. The first option is to refer to Figure 14-15 described, while the second option is reference Fig.16 Described.
[0140] Fig.14 The diagram illustrates a method performed by a network entity (such as a network node (e.g., a serving TRP) or a core network component (e.g., a location server 230, a LMF 270, an SLP 272, etc.) to notify a UE (e.g., any of the UEs described herein) of one or more downlink positioning signal resources (such as a downlink positioning signal resource) for measurement by the UE. Figure 6Example method 1400 for a first option of PRS resources 612 and / or PRS resources 614 for positioning signal transmission. Recall that in the context, a resource can be considered as a set of resource elements (REs) used for positioning signal transmission, which can span multiple PRBs within "N" (one or more) consecutive symbols within a time slot or subframe. In general, a network entity can configure a UE with resources for downlink positioning signals across a serving TRP and neighboring TRPs. Each positioning signal resource can be indicated by a reference point, an offset from the reference point, and a bandwidth.
[0141] In block 1410, the network entity obtains a UE capability report from the UE, which includes at least first and second UE capabilities. The first UE capability may indicate the UE's ability to measure positioning signals in a first frequency band. Similarly, the second UE capability may indicate the UE's ability to measure positioning signals in a second frequency band. The first and second frequency bands may be different frequency bands. The first and second frequency bands may be frequency bands with defined frequency ranges (e.g., FR1, FR2, etc.). Likewise, the first and second frequency bands may have a non-zero overlap region in the frequency domain (e.g., Fig.12 and 13 Note that the UE capabilities may be actual measurement capabilities, but may also indicate what the UE is allowed to be configured with in the first or second frequency band.
[0142] In one aspect, where the network entity is a TRP, operation 1410 may be performed by WWAN transceiver 350, processing system 384, memory component 386, and / or capability manager 388, any or all of which may be considered as means for performing such operation. Where the network entity is a location server, operation 1410 may be performed by (one or more) network interface 390, processing system 394, memory component 396, and / or capability manager 398, any or all of which may be considered as means for performing such operation.
[0143] In block 1420, the network entity configures the UE with an indication of one or more downlink positioning signal resources for measurement by the UE based on a function of the first and second UE capabilities (e.g., the lower). It should be noted that in one aspect, the network entity configuring the UE can be more broadly viewed as a form of the network entity notifying the UE, for example, via a configuration message, and the UE can make its own decision based on the configuration information. Thus, the configuration can be determined at the network entity, and information about the configuration can be sent to the UE. Communication between the network entity and the UE can be achieved through LPP.
[0144] In one aspect, where the network entity is a TRP, operation 1420 may be performed by WWAN transceiver 350, processing system 384, memory component 386, and / or capability manager 388, any or all of which may be considered as means for performing such operation. Where the network entity is a location server, operation 1420 may be performed by (one or more) network interface 390, processing system 394, memory component 396, and / or capability manager 398, any or all of which may be considered as means for performing such operation.
[0145] The downlink positioning signal resource may be a resource used for a PRS. One or more downlink positioning signal resources may be used for transmission by one or more TRPs (such as a serving TRP serving the UE and / or one or more adjacent TRPs adjacent to the serving TRP). Each downlink positioning signal resource may occupy a frequency region that at least partially overlaps with the overlap region.
[0146] The indication may include one or more start indications and one or more size indications. Each start indication may indicate the start frequency of one of the downlink positioning signal resources, and each size indication may indicate the bandwidth of one of the downlink positioning signal resources. The start frequency of the downlink positioning signal resource may include an absolute frequency reference point and a start offset. The absolute frequency reference point (e.g., ARFCN) may play the role of point A above, and the start offset may indicate the offset from the absolute frequency reference point that defines the start of the downlink positioning signal resource in the frequency domain. The size indication may indicate the bandwidth of the downlink positioning signal resource. This means that the end frequency of the downlink positioning signal resource may be calculated as the start indication plus the size indication.
[0147] It is contemplated that, unless explicitly indicated otherwise, the terms "frequency" and "bandwidth" should be broadly interpreted to include concepts that can be used as proxies to frequency. Such proxies may include PRBs, channel numbers (e.g., ARFCNs), etc. For example, the start offset may be equivalent to the number of PRBs offset from the absolute frequency reference point, and the size indication may be equivalent to the number of PRBs.
[0148] As described above, the downlink positioning signal resource can be indicated with a start indication and a size indication. The indication of the expected downlink positioning signal can also include a frequency band indication. However, due to the preference that the positioning signal is frequency band agnostic, in one aspect, the indication does not need to include a frequency band indication.
[0149] Fig.15 The diagram shows the steps performed by the network entity to implement Fig.14At block 1510, the network entity determines applied UE capabilities based on the first and second UE capabilities. In block 1520, the network entity configures the UE with one or more positioning signal resources according to the applied UE capabilities.
[0150] In one aspect, the first and second UE capabilities may include first and second bandwidths, respectively. The first bandwidth may indicate the bandwidth of resources of positioning signals (e.g., PRS) that the UE can measure in the first frequency band, and the second bandwidth may indicate the bandwidth of resources of positioning signals (e.g., PRS) that the UE can measure in the second band. The bandwidth may be indicated as a frequency or a frequency proxy. For example, the first and second bandwidths may be indicated as first and second numbers of PRBs, respectively.
[0151] In this example, in block 1510, the network entity may select or otherwise determine one of the first and second UE capabilities as the applied UE capability. For example, the network entity may determine the first UE capability as the applied UE capability when the first bandwidth is less than the second bandwidth, and otherwise determine the second UE capability as the applied UE capability. In block 1520, the network entity may configure the UE with one or more downlink positioning signal resources such that a bandwidth of at least one downlink positioning signal resource does not exceed a bandwidth of the applied UE capability.
[0152] In another aspect, the first and second UE capabilities may include first and second resource quantities, respectively. The first resource quantity may indicate the number of resources of a positioning signal (e.g., PRS) that the UE can measure in the first frequency band (e.g., within a predefined duration). Similarly, the second resource quantity may indicate the number of resources of a positioning signal (e.g., PRS) that the UE can measure in the second frequency band (e.g., within a predefined duration). The predefined duration may be indicated as the number of symbols, the number of time slots, the number of subframes, the number of frames, etc.
[0153] In this example, in block 1510, the network entity may determine the first UE capability as the applied UE capability when the first resource quantity is less than the second resource quantity, and otherwise determine the second UE capability as the applied UE capability. In block 1520, the network entity may configure the UE with one or more downlink positioning signal resources such that the number of downlink positioning resources does not exceed the number of resources of the applied UE capability (e.g., within a predefined period).
[0154] In another aspect, the first and second UE capabilities may include first and second TRP resource quantities, respectively. The first TRP resource quantity may indicate the number of resources of positioning signals (e.g., PRS) per TRP or across TRPs that the UE can measure in the first frequency band. Similarly, the second TRP resource quantity may indicate the number of resources of positioning signals (e.g., PRS) per TRP or across TRPs that the UE can measure in the second frequency band.
[0155] In this example, in block 1510, the network entity may determine the first UE capability as the applied UE capability when the first TRP resource quantity is less than the second TRP resource quantity, and otherwise determine the second UE capability as the applied UE capability. In block 1520, the network entity may configure the UE with one or more downlink positioning signal resources such that the number of downlink positioning resources per TRP or across TRPs does not exceed the number of TRP resources of the applied UE capability.
[0156] In another aspect, the first and second UE capabilities may include first and second RE quantities, respectively. The first RE quantity may indicate the maximum number of REs in the resources of the positioning signal (e.g., PRS) that the UE can measure in the first frequency band. Similarly, the second RE quantity may indicate the maximum number of REs in the resources of the positioning signal (e.g., PRS) that the UE can measure in the second frequency band.
[0157] In this example, in block 1510, the network entity may determine the first UE capability as the applied UE capability when the first RE number is less than the second RE number, and otherwise determine the second UE capability as the applied UE capability. In block 1520, the network entity may configure the UE with one or more downlink positioning signal resources so that the number of REs in at least one downlink positioning signal resource does not exceed the number of REs of the applied UE capability.
[0158] In another aspect, the first and second UE capabilities may include first and second durations, respectively. The first duration may indicate a maximum duration in the time domain of a positioning signal (e.g., PRS) resource that the UE can measure in the first frequency band (e.g., in a positioning opportunity). The second duration may indicate a maximum duration in the time domain of a positioning signal (e.g., PRS) resource that the UE can measure in the second frequency band (e.g., in a positioning opportunity). The first duration and / or the second duration may be indicated as the number of symbols, the number of slots, the number of subframes, the number of frames, etc.
[0159] In this example, in block 1510, the network entity may determine the first UE capability as the applied UE capability when the first duration is less than the second duration, and otherwise determine the second UE capability as the applied UE capability. In block 1520, the network entity may configure the UE with one or more downlink positioning signal resources such that the duration of at least one downlink positioning signal resource (e.g., within a positioning opportunity) does not exceed the duration of the applied UE capability.
[0160] In another aspect, the first and second UE capabilities may include first and second periodicities, respectively. The first periodicity may indicate the minimum duration of time that the UE waits between measuring positioning signal (e.g., PRS) resources in the first frequency band in the time domain. The second periodicity may indicate the minimum duration of time that the UE waits between measuring positioning signal (e.g., PRS) resources in the second frequency band in the time domain. The first periodicity and / or the second periodicity may be indicated as the number of symbols, the number of time slots, the number of subframes, the number of frames, etc.
[0161] In this example, in block 1510, the network entity may determine the first UE capability as the applied UE capability when the first periodicity is greater than the second duration, and otherwise determine the second UE capability as the applied UE capability. In block 1520, the network entity may configure the UE with one or more downlink positioning signal resources such that the periodicity of at least one downlink positioning signal resource is not less than the periodicity of the applied UE capability.
[0162] The downlink positioning signal resources in the foregoing and elsewhere may be multiple PRS resources per frequency layer, multiple PRS resources per TRP, multiple PRS resources across all frequency layers, multiple PRS resources across all TRPs, or multiple PRS resources for each set per TRP.
[0163] The approach taken to determine the UE capabilities to be applied in the above aspects may be described as a "conservative" approach. However, it is also contemplated that the network entity may apply an "aggressive approach". For example, between the first and second bandwidths, the network entity may select the UE capabilities (the first UE capabilities or the second UE capabilities) corresponding to the wider of the first and second bandwidths. Between the first and second resource quantities, the network entity may select the larger resource quantity.
[0164] It should be noted that Fig.14 and 15 can be modified in a relatively straightforward manner to configure the UE with an uplink positioning signal (e.g., SRS). This is illustrated in Fig.16 and 17 middle. Fig.16The diagram illustrates an example method 1600 performed by a network entity (e.g., a serving TRP, location server 230, LMF 270, SLP 272, etc.) to notify a UE (e.g., any of the UEs described herein) of one or more uplink positioning signal resources to be sent by the UE.
[0165] Block 1610 may be viewed as an example of a modification of block 1410 for obtaining a UE report including the UE's capability to transmit uplink positioning signals (e.g., SRS) in the first and second frequency bands (e.g., bandwidth, number of resources per frequency band, number of resources per TRP or across TRPs per frequency band, duration, periodicity, etc.). The UE may also report its capabilities regarding transmit power, number of SRS sets, etc.
[0166] In one aspect, where the network entity is a TRP, operation 1610 may be performed by WWAN transceiver 350, processing system 384, memory component 386, and / or capability manager 388, any or all of which may be considered as means for performing such operation. Where the network entity is a location server, operation 1610 may be performed by (one or more) network interface 390, processing system 394, memory component 396, and / or capability manager 398, any or all of which may be considered as means for performing such operation.
[0167] Block 1620 may be viewed as an example of a modification of block 1420 for configuring a UE with one or more uplink (UL) positioning signal resources based on the uplink capabilities of the UE. For example, a network entity may configure the UE to send an uplink positioning signal (e.g., SRS) with a narrower bandwidth, a lower number of resources, etc. (e.g., in a conservative approach) or using a wider bandwidth, a higher number of resources, etc. (e.g., in an aggressive approach). The resources used for the uplink positioning signal may be indicated in terms of an absolute frequency reference point (e.g., ARFCN), a starting offset (e.g., in PRBs), and a size (e.g., in PRBs). A frequency band indication may be included, but is not required.
[0168] In one aspect, where the network entity is a TRP, operation 1620 may be performed by WWAN transceiver 350, processing system 384, memory component 386, and / or capability manager 388, any or all of which may be considered as means for performing such operation. Where the network entity is a location server, operation 1620 may be performed by (one or more) network interface 390, processing system 394, memory component 396, and / or capability manager 398, any or all of which may be considered as means for performing such operation.
[0169] Fig.17 The diagram shows the steps performed by the network entity to implement Fig.16 In block 1710, the network entity may determine the UE capabilities to be applied based on the first and second UE capabilities (e.g., first and second bandwidths, first and second resource quantities, first and second TRP resource quantities, first and second RE quantities, first and second durations, first and second periodicities, first and second transmit powers, etc.). Similar to Fig.15 As described above, in block 1720, the network entity may configure the UE with one or more positioning signal resources according to the applied UE capabilities.
[0170] Fig.18 An example method 1800 of wireless communication according to aspects of the present disclosure is illustrated. In one aspect, the method 1800 may be performed by a UE (eg, any of the UEs described herein).
[0171] In block 1810, the UE sends a UE capability report to a network entity (e.g., a serving TRP, a location server 230, a LMF 270, an SLP 272, etc.). As described above, the UE capability report may include first and second UE capabilities. The first UE capability may indicate the UE's ability to measure positioning signals in a first frequency band, and the second UE capability may indicate the UE's ability to measure positioning signals in a second frequency band. In one aspect, the first and second frequency bands may have a non-zero overlap region in the frequency domain between the first and second frequency bands. For example, as described above with reference to Figure 8 As discussed, band n1 overlaps at least partially with bands n2, n25, and n66. Thus, the first band may include one of bands n1, n2, n25, and n66, and the second band may include another of bands n1, n2, n25, and n66. Furthermore, each band may be within a defined frequency range. For example, the first band may be a band in FR1, and the second band may be a band in FR2. In one aspect, operation 1810 may be performed by WWAN transceiver 310, processing system 332, memory component 340, and / or capability manager 342, any or all of which may be considered as components for performing this operation.
[0172] In box 1820, the UE receives an indication of one or more downlink positioning signal resources measured by the UE based on a function of the first and second UE capabilities (e.g., the lower) from a network entity. One or more downlink positioning signal resources can be used for transmission by one or more TRPs. Each downlink positioning signal resource can occupy a frequency region that is at least part of the first or second frequency band (e.g., at least partially overlapping with a non-zero overlap region). In one aspect, the indication may include a start indication and a size indication, the start indication indicating the starting frequency of the one or more downlink positioning signal resources, and the size indication indicating the bandwidth of one of the one or more downlink positioning signal resources. In one aspect, operation 1820 can be performed by the WWAN transceiver 310, the processing system 332, the memory component 340 and / or the capability manager 342, any or all of which can be considered as a component for performing this operation.
[0173] In block 1830, the UE performs one or more positioning measurements (e.g., ToA, RSTD, etc.) on the one or more downlink positioning signal resources based on the indication. In one aspect, operation 1830 may be performed by the WWAN transceiver 310, the processing system 332, the memory component 340, and / or the capability manager 342, any or all of which may be considered as means for performing this operation.
[0174] Fig.18 The method can be modified in a relatively straightforward manner to configure the UE with an uplink positioning signal (eg, SRS), such as Fig.19 . Block 1910 may be viewed as a modification of block 1810 for sending a UE report including the UE's ability to send an uplink positioning signal (e.g., SRS). The UE capability report may include first and second UE capabilities. The first UE capability may indicate the UE's ability to send positioning signals in a first frequency band, and the second UE capability may indicate the UE's ability to send positioning signals in a second frequency band. The first and second frequency bands may have a non-zero overlap region in the frequency domain between the first and second frequency bands.
[0175] Block 1920 may be viewed as a modification of block 1820 for configuring a UE with an indication of one or more uplink positioning signal resources to be sent by the UE based on the lower of the first and second UE capabilities. The one or more uplink positioning signal resources may be used to send to one or more TRPs. Each uplink positioning signal resource may occupy a frequency region that at least partially overlaps with a non-zero overlap region. In one aspect, the indication may include a start indication and a size indication, the start indication indicating a start frequency of the one or more downlink positioning signal resources, and the size indication indicating a bandwidth of one of the one or more downlink positioning signal resources.
[0176] In block 1930, the UE may send one or more uplink positioning signal resources based on the indication.
[0177] Those skilled in the art will appreciate that information and signals may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0178] In addition, it will be appreciated by those skilled in the art that the various illustrative logic blocks, modules, circuits, and algorithmic steps described in conjunction with the aspects disclosed herein may be implemented as electronic hardware, computer software, or a combination of the two. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functions. Whether such functions are implemented as hardware or software depends on the specific application and the design constraints imposed on the entire system. Those skilled in the art may implement the described functions in different ways for each specific application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.
[0179] The various illustrative logical blocks, modules, and circuits described in conjunction with the aspects disclosed herein may be implemented or executed using a general purpose processor, a DSP, an ASIC, an FPGA, or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative case, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration.
[0180] The methods, sequences and / or algorithms described in conjunction with the aspects disclosed herein may be directly embodied in hardware, in a software module executed by a processor, or in a combination of the two. The software module may reside in a random access memory (RAM), a flash memory, a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium. In an alternative case, the storage medium may be integrated into a processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal (e.g., UE). In an alternative case, the processor and the storage medium may reside in a user terminal as discrete components.
[0181] In one or more exemplary aspects, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored or sent as one or more instructions or codes on a computer-readable medium. Computer-readable media include both computer storage media and communication media, and communication media include any media that facilitates the transfer of computer programs from one place to another. Storage media may be any available media that can be accessed by a computer. As an example and not limitation, such computer-readable storage media may include RAM, ROM, EEPROM, CD-ROM, or other optical disk storage, disk storage, or other magnetic storage devices, or may be used to carry or store required program codes in the form of instructions or data structures and any other media that can be accessed by a computer. Similarly, any connection is appropriately referred to as a computer-readable medium. For example, if coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technology (such as infrared, radio, microwave) is used to send software from a website, server, or other remote source, coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technology (such as infrared, radio, and microwave) are included in the definition of medium. Disk and disc, as used herein, include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.
[0182] Although the foregoing disclosure shows the illustrative aspects of the present disclosure, it should be noted that various changes and modifications may be made herein without departing from the scope of the present disclosure as defined by the appended claims. The functions, steps and / or actions of the method claims according to the disclosed aspects described herein do not need to be performed in any particular order. In addition, although the elements of the present disclosure may be described or declared in singular form, the plural form is contemplated unless explicitly stated to be limited to the singular form.
Claims
1. A network entity, comprising: Memory; Communications equipment; as well as at least one processor communicatively coupled to the memory and the communication device, the at least one processor configured to: Obtaining a UE capability report from a user equipment UE, the UE capability report comprising first and second UE capabilities, the first UE capability indicating a capability of the UE to measure a positioning signal in a first frequency band, and the second UE capability indicating a capability of the UE to measure a positioning signal in a second frequency band; as well as configuring the UE with an indication of one or more downlink positioning signal resources for measurement by the UE as a function of the first UE capabilities and the second UE capabilities, the one or more downlink positioning signal resources for transmission by one or more transmission / reception points TRPs, each downlink positioning signal resource occupying a frequency region that is at least part of the first frequency band or the second frequency band, Wherein the first frequency band and the second frequency band have a non-zero overlap region in the frequency domain between the first frequency band and the second frequency band, and wherein each downlink positioning signal resource occupies a frequency region at least partially overlapping with the non-zero overlap region.
2. The network entity of claim 1, wherein the functionality of the first UE capability and the second UE capability is a minimum of the first and second capabilities.
3. The network entity of claim 1 , wherein the indication comprises one or more start indications and one or more size indications, each start indication indicating a start frequency of one of the one or more downlink positioning signal resources, and each size indication indicating a bandwidth of one of the one or more downlink positioning signal resources.
4. The network entity according to claim 3, wherein the start indication of the downlink positioning signal resource comprises: Absolute frequency reference point; as well as A start offset indicates an offset from the absolute frequency reference point.
5. The network entity according to claim 4, wherein: The absolute frequency reference point is an absolute radio frequency channel number, The starting offset is the number of physical resource blocks (PRBs), and / or The bandwidth is the number of PRBs.
6. The network entity of claim 3, wherein the indication does not include an indication of a frequency band of the one or more downlink positioning signal resources.
7. The network entity of claim 1 , wherein the at least one processor configured to configure the UE with the indication of the one or more downlink positioning signal resources comprises the at least one processor configured to: Determining applied UE capabilities based on the first UE capabilities and the second UE capabilities; and The one or more downlink positioning signal resources are configured according to the applied UE capabilities.
8. The network entity according to claim 7, wherein: The first UE capability includes a first bandwidth indicating a bandwidth of resources of positioning signals associated with the first frequency band, The second UE capabilities include a second bandwidth indicating a bandwidth of resources for positioning signals associated with the second frequency band, and The at least one processor configured to determine the applied UE capabilities includes the at least one processor configured to perform the following steps: determining the first UE capabilities as the applied UE capabilities when the first bandwidth is less than the second bandwidth, otherwise determining the second UE capabilities as the applied UE capabilities.
9. The network entity of claim 8, wherein the at least one processor configured to configure the one or more downlink positioning signal resources comprises the at least one processor configured to perform the following steps: configuring the one or more downlink positioning signal resources so that a bandwidth of at least one downlink positioning signal resource does not exceed a bandwidth of the applied UE capabilities.
10. The network entity according to claim 7, wherein: The first UE capability includes a first resource quantity indicating a quantity of resources for positioning signals associated with the first frequency band, The second UE capabilities include a second resource quantity indicating a quantity of resources for positioning signals associated with the second frequency band, and The at least one processor configured to determine the applied UE capability includes the at least one processor configured to perform the following steps: determining the first UE capability as the applied UE capability when the first resource quantity is less than the second resource quantity, otherwise determining the second UE capability as the applied UE capability.
11. The network entity of claim 10, wherein the at least one processor configured to configure the one or more downlink positioning signal resources comprises the at least one processor configured to perform the following steps: configuring the one or more downlink positioning signal resources so that the number of the one or more downlink positioning signal resources does not exceed the number of resources of the applied UE capabilities.
12. The network entity according to claim 7, wherein: The first UE capability comprises a first TRP resource quantity indicating a quantity of resources for positioning signals per TRP or across TRPs associated with the first frequency band, The second UE capability includes a second TRP resource quantity indicating a quantity of resources for positioning signals per TRP or across TRPs associated with the second frequency band, and The at least one processor configured to determine the applied UE capability includes the at least one processor configured to perform the following steps: determining the first UE capability as the applied UE capability when the first TRP resource quantity is less than the second TRP resource quantity, otherwise determining the second UE capability as the applied UE capability.
13. A network entity as described in claim 12, wherein the at least one processor configured to configure the one or more downlink positioning signal resources includes the at least one processor configured to perform the following steps: configuring the one or more downlink positioning signal resources so that the number of downlink positioning signal resources per TRP or across TRPs does not exceed the number of TRP resources of the applied UE capability.
14. The network entity according to claim 7, wherein: The first UE capability includes a first RE number indicating the number of resource elements RE of resources of a positioning signal associated with the first frequency band, The second UE capability includes a second RE number indicating the number of REs of resources for positioning signals associated with the second frequency band, and The at least one processor configured to determine the applied UE capability includes the at least one processor configured to perform the following steps: determining the first UE capability as the applied UE capability when the first RE number is less than the second RE number, otherwise determining the second UE capability as the applied UE capability.
15. The network entity of claim 14, wherein the at least one processor configured to configure the one or more downlink positioning signal resources comprises the at least one processor configured to perform the following steps: configuring the one or more downlink positioning signal resources so that the number of REs of at least one downlink positioning signal resource does not exceed the number of REs of the applied UE capability.
16. The network entity of claim 7, wherein: The first UE capability comprises a first duration indicating a maximum duration in the time domain of resources of a positioning signal associated with the first frequency band, The second UE capabilities include a second duration indicating a maximum duration in the time domain of resources of a positioning signal associated with the second frequency band, The at least one processor configured to determine the applied UE capability includes the at least one processor configured to perform the following steps: when the first duration is less than the second duration, determining the first UE capability as the applied UE capability, otherwise determining the second UE capability as the applied UE capability.
17. The network entity of claim 16, wherein the at least one processor configured to configure the one or more downlink positioning signal resources comprises the at least one processor configured to perform the following steps: configuring the one or more downlink positioning signal resources so that a duration of at least one downlink positioning signal resource does not exceed a duration of the applied UE capability.
18. The network entity of claim 7, wherein: The first UE capability comprises a first periodicity indicating a minimum duration for the UE to wait between measuring positioning signals in the first frequency band in the time domain, The second UE capability comprises a second periodicity indicating a minimum duration for the UE to wait between measuring positioning signals in the second frequency band in the time domain, The at least one processor configured to determine the applied UE capability includes the at least one processor configured to perform the following steps: determining the first UE capability as the applied UE capability when the first periodicity is greater than the second periodicity, otherwise determining the second UE capability as the applied UE capability.
19. The network entity of claim 18, wherein the at least one processor configured to configure the one or more downlink positioning signal resources comprises the at least one processor configured to perform the following steps: configuring the one or more downlink positioning signal resources so that a periodicity of at least one downlink positioning signal resource is not less than a periodicity of the applied UE capability.
20. The network entity of claim 1, wherein: The network entity includes a location server, and The communication device comprises at least one network interface.
21. The network entity of claim 1, wherein: The network entity includes a serving TRP, and The communication device comprises at least one transceiver.
22. The network entity of claim 1, wherein the at least one processor is further configured to: receiving, via the communications device, measurements of the one or more downlink positioning signal resources from the UE; and A location of the UE is determined based on the measurements.
23. A user equipment UE, comprising: Memory; at least one transceiver; as well as at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor configured to: Enable the at least one transceiver to send a UE capability report to a network entity, the UE capability report comprising first and second UE capabilities, the first UE capability indicating a capability of the UE to measure positioning signals in a first frequency band, and the second UE capability indicating a capability of the UE to measure positioning signals in a second frequency band; receiving, from the network entity via the at least one transceiver, an indication of one or more downlink positioning signal resources for measurement by the UE based on a function of the first UE capability and the second UE capability, the one or more downlink positioning signal resources for transmission by one or more transmission / reception points (TRPs), each downlink positioning signal resource occupying a frequency region that is at least part of the first frequency band or the second frequency band, wherein the first frequency band and the second frequency band have a non-zero overlap region in the frequency domain between the first frequency band and the second frequency band, and wherein each downlink positioning signal resource occupies a frequency region that at least partially coincides with the non-zero overlap region; as well as One or more positioning measurements are performed on the one or more downlink positioning signal resources based on the indication.
24. The UE of claim 23, wherein the function of the first UE capability and the second UE capability is a minimum of the first and second capabilities.
25. The UE of claim 23, wherein the indication comprises one or more start indications and one or more size indications, each start indication indicating a start frequency of one of the one or more downlink positioning signal resources, and each size indication indicating a bandwidth of one of the one or more downlink positioning signal resources.
26. The UE according to claim 25, wherein the start indication of the downlink positioning signal resource comprises: Absolute frequency reference point; as well as A start offset indicates an offset from the absolute frequency reference point.
27. The UE of claim 26, wherein: The absolute frequency reference point is an absolute radio frequency channel number, The starting offset is the number of physical resource blocks (PRBs), and / or The bandwidth is the number of PRBs.
28. The UE of claim 25, wherein the indication does not include an indication of a frequency band of the one or more downlink positioning signal resources.
29. The UE of claim 23, wherein the at least one processor being configured to receive the indication comprises the at least one processor being configured to: An indication of applied UE capabilities based on the first UE capabilities and the second UE capabilities is received.
30. The UE of claim 29, wherein: The first UE capability includes a first bandwidth indicating a bandwidth of resources of positioning signals associated with the first frequency band, The second UE capabilities include a second bandwidth indicating a bandwidth of resources for positioning signals associated with the second frequency band, and The applied UE capability is the first UE capability when the first bandwidth is smaller than the second bandwidth; otherwise, the applied UE capability is the second UE capability.
31. The UE of claim 29, wherein: The first UE capability includes a first resource quantity indicating a quantity of resources for positioning signals associated with the first frequency band, The second UE capabilities include a second resource quantity indicating a quantity of resources for positioning signals associated with the second frequency band, and The applied UE capability is the first UE capability when the first resource quantity is less than the second resource quantity; otherwise, the applied UE capability is the second UE capability.
32. The UE of claim 29, wherein: The first UE capability comprises a first TRP resource quantity indicating a quantity of resources for positioning signals per TRP or across TRPs associated with the first frequency band, The second UE capability includes a second TRP resource quantity indicating a quantity of resources for positioning signals per TRP or across TRPs associated with the second frequency band, and The applied UE capability is the first UE capability when the number of the first TRP resources is less than the number of the second TRP resources; otherwise, the applied UE capability is the second UE capability.
33. The UE of claim 29, wherein: The first UE capability includes a first RE number indicating the number of resource elements RE of resources of a positioning signal associated with the first frequency band, The second UE capability includes a second RE number indicating the number of REs of resources for positioning signals associated with the second frequency band, and The applied UE capability is the first UE capability when the first RE number is less than the second RE number; otherwise, the applied UE capability is the second UE capability.
34. The UE of claim 29, wherein: The first UE capability comprises a first duration indicating a maximum duration in the time domain of resources of a positioning signal associated with the first frequency band, The second UE capabilities include a second duration indicating a maximum duration in the time domain of resources of a positioning signal associated with the second frequency band, The applied UE capability is the first UE capability when the first duration is less than the second duration; otherwise, the applied UE capability is the second UE capability.
35. The UE of claim 29, wherein: The first UE capability comprises a first periodicity indicating a minimum duration for the UE to wait between measuring positioning signals in the first frequency band in the time domain, The second UE capability comprises a second periodicity indicating a minimum duration for the UE to wait between measuring positioning signals in the second frequency band in the time domain, The applied UE capability is the first UE capability when the first periodicity is greater than the second periodicity; otherwise, the applied UE capability is the second UE capability.
36. The UE of claim 23, wherein the network entity comprises a location server, a location management function, or a serving TRP.
37. The UE of claim 23, wherein the at least one processor is further configured to: causing the at least one transceiver to send the one or more positioning measurements to the network entity; or A position of the UE is determined based on the one or more positioning measurements.
38. A method of wireless communication performed by a network entity, the method comprising: Obtaining a UE capability report from a user equipment UE, the UE capability report comprising first and second UE capabilities, the first UE capability indicating a capability of the UE to measure a positioning signal in a first frequency band, and the second UE capability indicating a capability of the UE to measure a positioning signal in a second frequency band; as well as configuring the UE with an indication of one or more downlink positioning signal resources for measurement by the UE as a function of the first UE capabilities and the second UE capabilities, the one or more downlink positioning signal resources for transmission by one or more transmission / reception points TRPs, each downlink positioning signal resource occupying a frequency region that is at least part of the first frequency band or the second frequency band, Wherein the first frequency band and the second frequency band have a non-zero overlap region in the frequency domain between the first frequency band and the second frequency band, and wherein each downlink positioning signal resource occupies a frequency region at least partially overlapping with the non-zero overlap region.
39. The method of claim 38, wherein the function of the first UE capability and the second UE capability is a minimum of the first and second capabilities.
40. The method of claim 38, wherein the indication comprises one or more start indications and one or more size indications, each start indication indicating a start frequency of one of the one or more downlink positioning signal resources, and each size indication indicating a bandwidth of one of the one or more downlink positioning signal resources.
41. The method of claim 40, wherein the start indication of the downlink positioning signal resource comprises: Absolute frequency reference point; as well as A start offset indicates an offset from the absolute frequency reference point.
42. The method of claim 41, wherein: The absolute frequency reference point is an absolute radio frequency channel number, The starting offset is the number of physical resource blocks (PRBs), and / or The bandwidth is the number of PRBs.
43. The method of claim 40, wherein the indication does not include an indication of a frequency band of the one or more downlink positioning signal resources.
44. The method of claim 38, wherein configuring the UE with the indication of the one or more downlink positioning signal resources comprises: Determining applied UE capabilities based on the first UE capabilities and the second UE capabilities; as well as The one or more downlink positioning signal resources are configured according to the applied UE capabilities.
45. The method of claim 44, wherein: The first UE capability includes a first bandwidth indicating a bandwidth of resources of positioning signals associated with the first frequency band, The second UE capabilities include a second bandwidth indicating a bandwidth of resources for positioning signals associated with the second frequency band, and Determining the applied UE capability includes determining the first UE capability as the applied UE capability when the first bandwidth is less than the second bandwidth, and otherwise determining the second UE capability as the applied UE capability.
46. The method of claim 45, wherein configuring the one or more downlink positioning signal resources comprises: The one or more downlink positioning signal resources are configured so that a bandwidth of at least one downlink positioning signal resource does not exceed a bandwidth of the applied UE capability.
47. The method of claim 44, wherein: The first UE capability includes a first resource quantity indicating a quantity of resources for positioning signals associated with the first frequency band, The second UE capabilities include a second resource quantity indicating a quantity of resources for positioning signals associated with the second frequency band, and Determining the applied UE capability includes determining the first UE capability as the applied UE capability when the first resource quantity is less than the second resource quantity, and otherwise determining the second UE capability as the applied UE capability.
48. The method of claim 47, wherein configuring the one or more downlink positioning signal resources comprises: The one or more downlink positioning signal resources are configured so that the number of the one or more downlink positioning signal resources does not exceed the number of resources of the applied UE capability.
49. The method of claim 44, wherein: The first UE capability comprises a first TRP resource quantity indicating a quantity of resources for positioning signals per TRP or across TRPs associated with the first frequency band, The second UE capability includes a second TRP resource quantity indicating a quantity of resources for positioning signals per TRP or across TRPs associated with the second frequency band, and Determining the applied UE capability includes determining the first UE capability as the applied UE capability when the first TRP resource quantity is less than the second TRP resource quantity, otherwise determining the second UE capability as the applied UE capability.
50. The method of claim 49, wherein configuring the one or more downlink positioning signal resources comprises: Configure the one or more downlink positioning signal resources so that the number of downlink positioning signal resources per TRP or across TRPs does not exceed the number of TRP resources of the applied UE capability.
51. The method of claim 44, wherein: The first UE capability includes a first RE number indicating the number of resource elements RE of resources of a positioning signal associated with the first frequency band, The second UE capability includes a second RE number indicating the number of REs of resources for positioning signals associated with the second frequency band, and Determining the applied UE capability includes determining the first UE capability as the applied UE capability when the first RE number is less than the second RE number, and otherwise determining the second UE capability as the applied UE capability.
52. The method of claim 51 , wherein configuring the one or more downlink positioning signal resources comprises: The one or more downlink positioning signal resources are configured so that the number of REs of at least one downlink positioning signal resource does not exceed the number of REs of the applied UE capability.
53. The method of claim 44, wherein: The first UE capability comprises a first duration indicating a maximum duration in the time domain of resources of a positioning signal associated with the first frequency band, The second UE capabilities include a second duration indicating a maximum duration in the time domain of resources of a positioning signal associated with the second frequency band, Determining the applied UE capability includes determining the first UE capability as the applied UE capability when the first duration is less than the second duration, and otherwise determining the second UE capability as the applied UE capability.
54. The method of claim 53, wherein configuring the one or more downlink positioning signal resources comprises: The one or more downlink positioning signal resources are configured so that a duration of at least one downlink positioning signal resource does not exceed a duration of the applied UE capability.
55. The method of claim 44, wherein: The first UE capability comprises a first periodicity indicating a minimum duration for the UE to wait between measuring positioning signals in the first frequency band in the time domain, The second UE capability comprises a second periodicity indicating a minimum duration for the UE to wait between measuring positioning signals in the second frequency band in the time domain, Determining the applied UE capability includes determining the first UE capability as the applied UE capability when the first periodicity is greater than the second periodicity, and otherwise determining the second UE capability as the applied UE capability.
56. The method of claim 55, wherein configuring the one or more downlink positioning signal resources comprises: The one or more downlink positioning signal resources are configured so that a periodicity of at least one downlink positioning signal resource is not less than a periodicity of the applied UE capability.
57. The method of claim 38, wherein the network entity comprises a location server, a location management function, or a serving TRP.
58. The method of claim 38, further comprising: receiving, from the UE, measurements of the one or more downlink positioning signal resources; as well as A location of the UE is determined based on the measurements.
59. A method of wireless communication performed by a user equipment UE, the method comprising: Sending a UE capability report to a network entity, the UE capability report comprising first and second UE capabilities, the first UE capability indicating a capability of the UE to measure a positioning signal in a first frequency band, and the second UE capability indicating a capability of the UE to measure a positioning signal in a second frequency band; receiving, from the network entity, an indication of one or more downlink positioning signal resources for measurement by the UE based on a function of the first UE capability and the second UE capability, the one or more downlink positioning signal resources for transmission by one or more transmission / reception points (TRPs), each downlink positioning signal resource occupying a frequency region that is at least part of the first frequency band or the second frequency band, wherein the first frequency band and the second frequency band have a non-zero overlap region in the frequency domain between the first frequency band and the second frequency band, and wherein each downlink positioning signal resource occupies a frequency region that at least partially coincides with the non-zero overlap region; as well as One or more positioning measurements are performed on the one or more downlink positioning signal resources based on the indication.
60. The method of claim 59, wherein the function of the first UE capability and the second UE capability is a minimum of the first and second capabilities.
61. A method as claimed in claim 59, wherein the indication includes one or more start indications and one or more size indications, each start indication indicates the starting frequency of one of the one or more downlink positioning signal resources, and each size indication indicates the bandwidth of one of the one or more downlink positioning signal resources.
62. The method of claim 61, wherein the start indication of the downlink positioning signal resource comprises: Absolute frequency reference point; as well as A start offset indicates an offset from the absolute frequency reference point.
63. The method of claim 62, wherein: The absolute frequency reference point is an absolute radio frequency channel number, The starting offset is the number of physical resource blocks (PRBs), and / or The bandwidth is the number of PRBs.
64. The method of claim 61, wherein the indication does not include an indication of a frequency band of the one or more downlink positioning signal resources.
65. The method of claim 61 , wherein receiving the indication comprises: An indication of applied UE capabilities based on the first UE capabilities and the second UE capabilities is received.
66. The method of claim 65, wherein: The first UE capability includes a first bandwidth indicating a bandwidth of resources of positioning signals associated with the first frequency band, The second UE capabilities include a second bandwidth indicating a bandwidth of resources for positioning signals associated with the second frequency band, and The applied UE capability is the first UE capability when the first bandwidth is smaller than the second bandwidth; otherwise, the applied UE capability is the second UE capability.
67. The method of claim 65, wherein: The first UE capability includes a first resource quantity indicating a quantity of resources for positioning signals associated with the first frequency band, The second UE capabilities include a second resource quantity indicating a quantity of resources for positioning signals associated with the second frequency band, and The applied UE capability is the first UE capability when the first resource quantity is less than the second resource quantity; otherwise, the applied UE capability is the second UE capability.
68. The method of claim 65, wherein: The first UE capability comprises a first TRP resource quantity indicating a quantity of resources for positioning signals per TRP or across TRPs associated with the first frequency band, The second UE capability includes a second TRP resource quantity indicating a quantity of resources for positioning signals per TRP or across TRPs associated with the second frequency band, and The applied UE capability is the first UE capability when the number of the first TRP resources is less than the number of the second TRP resources; otherwise, the applied UE capability is the second UE capability.
69. The method of claim 65, wherein: The first UE capability includes a first RE number indicating the number of resource elements RE of resources of a positioning signal associated with the first frequency band, The second UE capability includes a second RE number indicating the number of REs of resources for positioning signals associated with the second frequency band, and The applied UE capability is the first UE capability when the first RE number is less than the second RE number; otherwise, the applied UE capability is the second UE capability.
70. The method of claim 65, wherein: The first UE capability comprises a first duration indicating a maximum duration in the time domain of resources of a positioning signal associated with the first frequency band, The second UE capabilities include a second duration indicating a maximum duration in the time domain of resources of a positioning signal associated with the second frequency band, The applied UE capability is the first UE capability when the first duration is less than the second duration; otherwise, the applied UE capability is the second UE capability.
71. The method of claim 65, wherein: The first UE capability comprises a first periodicity indicating a minimum duration for the UE to wait between measuring positioning signals in the first frequency band in the time domain, The second UE capability comprises a second periodicity indicating a minimum duration for the UE to wait between measuring positioning signals in the second frequency band in the time domain, The applied UE capability is the first UE capability when the first periodicity is greater than the second periodicity; otherwise, the applied UE capability is the second UE capability.
72. The method of claim 59, wherein the network entity comprises a location server, a location management function, or a serving TRP.
73. The method of claim 59, further comprising: sending the one or more positioning measurements to the network entity; or A position of the UE is determined based on the one or more positioning measurements.
74. A network entity comprising: A component for obtaining a UE capability report from a user equipment UE, the UE capability report comprising first and second UE capabilities, the first UE capability indicating a capability of the UE to measure a positioning signal in a first frequency band, the second UE capability indicating a capability of the UE to measure a positioning signal in a second frequency band, the first frequency band and the second frequency band having a non-zero overlapping area in a frequency domain between the first frequency band and the second frequency band; as well as A component for configuring the UE with an indication of one or more downlink positioning signal resources for measurement by the UE based on a function of the first UE capability and the second UE capability, the one or more downlink positioning signal resources being for transmission by one or more transmission / reception points TRP, each downlink positioning signal resource occupying a frequency region that at least partially overlaps with the non-zero overlap region.
75. A user equipment UE, comprising: A component for sending a UE capability report to a network entity, the UE capability report comprising first and second UE capabilities, the first UE capability indicating a capability of the UE to measure a positioning signal in a first frequency band, the second UE capability indicating a capability of the UE to measure a positioning signal in a second frequency band, the first frequency band and the second frequency band having a non-zero overlap region in a frequency domain between the first frequency band and the second frequency band; means for receiving, from the network entity, an indication of one or more downlink positioning signal resources for measurement by the UE based on a function of the first UE capabilities and the second UE capabilities, the one or more downlink positioning signal resources for transmission by one or more transmission / reception points TRPs, each downlink positioning signal resource occupying a frequency region at least partially coinciding with the non-zero overlap region; as well as Means for performing one or more positioning measurements on the one or more downlink positioning signal resources based on the indication.
76. A non-transitory computer-readable medium storing computer-executable instructions, the computer-executable instructions comprising: Instructing a network entity to obtain at least one instruction of a UE capability report from a user equipment UE, wherein the UE capability report includes first and second UE capabilities, wherein the first UE capability indicates a capability of the UE to measure a positioning signal in a first frequency band, and the second UE capability indicates a capability of the UE to measure a positioning signal in a second frequency band, wherein the first frequency band and the second frequency band have a non-zero overlapping area in a frequency domain between the first frequency band and the second frequency band; as well as Instruct the network entity to configure at least one instruction of the UE with an indication of one or more downlink positioning signal resources for measurement by the UE based on a function of the first UE capability and the second UE capability, wherein the one or more downlink positioning signal resources are for transmission by one or more transmission / reception points TRP, each downlink positioning signal resource occupies a frequency region that at least partially overlaps with the non-zero overlap region.
77. A non-transitory computer-readable medium storing computer-executable instructions, the computer-executable instructions comprising: Instructing a user equipment UE to send at least one instruction of a UE capability report to a network entity, wherein the UE capability report includes first and second UE capabilities, wherein the first UE capability indicates a capability of the UE to measure a positioning signal in a first frequency band, and the second UE capability indicates a capability of the UE to measure a positioning signal in a second frequency band, wherein the first frequency band and the second frequency band have a non-zero overlapping area in a frequency domain between the first frequency band and the second frequency band; Instructing the UE to receive at least one instruction from the network entity for an indication of one or more downlink positioning signal resources measured by the UE based on a function of the first UE capability and the second UE capability, the one or more downlink positioning signal resources for transmission by one or more transmission / reception points TRP, each downlink positioning signal resource occupying a frequency region at least partially overlapping with the non-zero overlap region; as well as At least one instruction instructs the UE to perform one or more positioning measurements on the one or more downlink positioning signal resources based on the indication.
Citation Information
Patent Citations
Methods and systems for location determination of a mobile device using partial RF bands
US10327109B1