Downlink positioning reference signal configuration and processing in full duplex scenarios

Abstract

Techniques for utilizing positioning reference signals (PRS) in full duplex scenarios are provided. An example method for wireless communication by a user equipment (UE) includes receiving a positioning reference signal in a time slot, wherein the positioning reference signal spans a first frequency bandwidth; transmitting a signal in a second frequency bandwidth during the time slot, wherein the second frequency bandwidth comprises frequencies within the first frequency bandwidth; and processing the positioning reference signal received in the first frequency bandwidth excluding the frequency in the second frequency bandwidth.

Description

[0001] This application is a divisional application of the patent application with the application number 202180023121.6 and the invention title "Downlink Positioning Reference Signal Configuration and Processing in Full Duplex Scenarios" submitted on March 16, 2021. Technical Field

[0002] Aspects of the present disclosure relate to wireless communication and, more particularly, to techniques for a user equipment to utilize positioning reference signals with full duplex operation. Background Art

[0003] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, voice, video, data, messaging, broadcasting, positioning, etc. These wireless communication systems may employ multiple access techniques capable of supporting communication with multiple users by sharing available system resources (e.g., frequency, transmit power, etc.). By way of example only, examples of such multiple access systems include the 3rd Generation Partnership Project (3GPP) Fifth Generation New Radio system (5G NR), Long Term Evolution (LTE) system, Advanced LTE (LTE-A) system, Code Division Multiple Access (CDMA) system, Time Division Multiple Access (TDMA) system, Frequency Division Multiple Access (FDMA) system, Orthogonal Frequency Division Multiple Access (OFDMA) system, Single Carrier Frequency Division Multiple Access (SC-FDMA) system, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system.

[0004] Obtaining the location or positioning of a mobile device accessing a wireless communication system may be useful for many applications, including for example emergency calls, personal navigation, asset tracking, friend or family member location, etc. Existing positioning methods include methods based on measuring wireless signals transmitted from various devices, including artificial satellites (SVs) and terrestrial radio resources in a wireless network such as base stations and access points. In methods based on terrestrial wireless power sources, a mobile device may measure the timing of signals received from two or more base stations and determine the time of arrival, time difference of arrival, and / or receive time - transmit time difference. Combining these measurements with the known locations of the base stations and the known transmit times from each base station can be used to achieve positioning of the mobile device using positioning methods such as Observed Time Difference of Arrival (OTDOA) or Enhanced Cell ID (ECID).

[0005] To further assist in location determination (e.g., for OTDOA), positioning reference signals (PRS) can be sent by a base station to improve both measurement accuracy and the number of different base stations to which a mobile device can obtain timing measurements. Generally, a base station and a mobile device can communicate using half-duplex operation, where the base station and the mobile device sequentially utilize a downlink channel (e.g., for transmission from the base station to the mobile device) or an uplink channel (e.g., for transmission from the mobile device to the base station). However, emerging technologies will enable full-duplex operation where a base station or a mobile device can communicate simultaneously on a downlink channel and an uplink channel. Full-duplex operation can reduce the efficiency of terrestrial positioning processes. Summary of the Invention

[0006] An example method for wireless communication by a user equipment (UE) according to the present disclosure includes: receiving a positioning reference signal in a time slot, where the positioning reference signal spans a first frequency bandwidth; transmitting a signal in a second frequency bandwidth during the time slot, where the second frequency bandwidth includes frequencies within the first frequency bandwidth; and processing the positioning reference signal received in the first frequency bandwidth excluding the frequencies in the second frequency bandwidth.

[0007] Embodiments of this method can include one or more of the following features. The time slot can be a symbol time slot. The positioning reference signal can be received from a first base station, and the signal transmitted in the second frequency bandwidth can be transmitted to the first base station. The positioning reference signal can be received from a first base station, and the signal transmitted in the second frequency bandwidth can be transmitted to a second base station. One or more radio resource control signals can be received to configure the first frequency bandwidth and the second frequency bandwidth. Processing the positioning reference signal can include comparing the positioning reference signal received in the first frequency bandwidth with a previous positioning reference signal received in a previous time slot. The duration of the time slot can be approximately between 1 millisecond and 6 milliseconds. The positioning reference signal can be one of a plurality of positioning reference signals received by the user equipment such that each of the plurality of positioning reference signals has the same subcarrier spacing and cyclic prefix.

[0008] An example method for wireless communication by a user equipment (UE) according to the present disclosure includes: receiving a positioning reference signal in a downlink resource bandwidth portion; transmitting a signal in an uplink resource bandwidth portion, where the uplink resource bandwidth portion overlaps at least a portion of the downlink resource bandwidth portion; and processing the positioning reference signal received in a portion of the downlink resource bandwidth portion that does not overlap with the uplink resource bandwidth portion.

[0009] Implementations of this method may include one or more of the following features. The positioning reference signal may be received from a first base station, and the signal in the uplink resource bandwidth part may be sent to the first base station. The positioning reference signal may be received from a first base station, and the signal in the uplink resource bandwidth part may be sent to a second base station. One or more radio resource control signals may be received to configure the downlink resource bandwidth part and the uplink resource bandwidth part. One or more downlink control information signals may be received to configure the downlink resource bandwidth part and the uplink resource bandwidth part. The positioning reference signal may be received in a first time slot, and processing the positioning reference signal may include comparing the positioning reference signal received in the first time slot with a previous positioning reference signal received in a previous time slot. The duration of the first time slot may be approximately between 1 millisecond and 6 milliseconds. The positioning reference signal may be one of a plurality of positioning reference signals received by the user equipment, such that each of the plurality of positioning reference signals has the same subcarrier spacing and cyclic prefix. The downlink resource bandwidth part may include a mutually exclusive set of frequency resources.

[0010] An example method for wireless communication by a base station according to the present disclosure: configuring a first positioning frequency layer for full-duplex operation; configuring a second positioning frequency layer for half-duplex operation; providing the first positioning frequency layer to a first mobile device; and providing the second positioning frequency layer to a second mobile device.

[0011] Implementations of this method may include one or more of the following features. The first positioning frequency layer and the second positioning frequency layer may include one or more sets of positioning reference signal resources, where each set of positioning reference signal resources includes the same subcarrier spacing and cyclic prefix. Configuring the first positioning frequency layer for full-duplex operation may include configuring a time slot category field to indicate full-duplex operation. Configuring the second positioning frequency layer for half-duplex operation may include configuring a time slot category field to indicate half-duplex operation. Providing the first positioning frequency layer to the first mobile device and providing the second positioning frequency layer to the second mobile device may include sending one or more radio resource control signals to the first mobile device and the second mobile device.

[0012] An example apparatus for wireless communication according to the present disclosure includes: a memory; at least one transceiver; and at least one processor communicatively coupled to the memory and the at least one transceiver such that the at least one transceiver is configured to: receive a positioning reference signal in a time slot, wherein the positioning reference signal spans a first frequency bandwidth, and transmit a signal in a second frequency bandwidth during the time slot, wherein the second frequency bandwidth includes frequencies within the first frequency bandwidth, and the at least one processor is configured to process the positioning reference signal received in the first frequency bandwidth excluding the frequencies in the second frequency bandwidth.

[0013] An example apparatus for wireless communication according to the present disclosure includes: a memory; at least one transceiver; and at least one processor communicatively coupled to the memory and the at least one transceiver such that the at least one transceiver is configured to: receive a positioning reference signal in a downlink resource bandwidth portion, and transmit a signal in an uplink resource bandwidth portion, wherein the uplink resource bandwidth portion overlaps at least a portion of the downlink resource bandwidth portion, and the at least one processor is configured to process the positioning reference signal received in a portion of the downlink resource bandwidth portion that does not overlap with the uplink resource bandwidth portion.

[0014] An example apparatus for wireless communication according to the present disclosure includes: a memory; at least one transceiver; at least one processor operatively coupled to the at least one transceiver and the memory and configured to: configure a first positioning frequency layer for full-duplex operation; configure a second positioning frequency layer for half-duplex operation; provide the first positioning frequency layer to a first mobile device; and provide the second positioning frequency layer to a second mobile device.

[0015] An example apparatus for wireless communication by a user equipment (UE) according to the present disclosure includes: means for receiving a positioning reference signal in a time slot, wherein the positioning reference signal spans a first frequency bandwidth; means for transmitting a signal in a second frequency bandwidth during the time slot, wherein the second frequency bandwidth includes frequencies within the first frequency bandwidth; and means for processing the positioning reference signal received in the first frequency bandwidth excluding the frequencies in the second frequency bandwidth.

[0016] An example apparatus for wireless communication by a user equipment (UE) according to the present disclosure includes: means for receiving a positioning reference signal in a downlink resource bandwidth portion; means for transmitting a signal in an uplink resource bandwidth portion, wherein the uplink resource bandwidth portion overlaps at least a portion of the downlink resource bandwidth portion; and means for processing the positioning reference signal received in a portion of the downlink resource bandwidth portion that does not overlap with the uplink resource bandwidth portion.

[0017] An example apparatus for wireless communication by a base station according to the present disclosure includes: means for configuring a first positioning frequency layer for full-duplex operation; means for configuring a second positioning frequency layer for half-duplex operation; means for providing the first positioning frequency layer to a first mobile device; and means for providing the second positioning frequency layer to a second mobile device.

[0018] An example non-transitory processor-readable storage medium including processor-readable instructions configured to cause one or more processors in a user equipment (UE) to communicate wirelessly includes: code for receiving a positioning reference signal in a time slot, wherein the positioning reference signal spans a first frequency bandwidth; code for transmitting a signal in a second frequency bandwidth during the time slot, wherein the second frequency bandwidth includes frequencies within the first frequency bandwidth; and code for processing the positioning reference signal received in the first frequency bandwidth excluding the frequencies in the second frequency bandwidth.

[0019] An example non-transitory processor-readable storage medium including processor-readable instructions configured to cause one or more processors in a user equipment (UE) to communicate wirelessly includes: code for receiving a positioning reference signal in a downlink resource bandwidth portion; code for transmitting a signal in an uplink resource bandwidth portion, wherein the uplink resource bandwidth portion overlaps at least a portion of the downlink resource bandwidth portion; and code for processing the positioning reference signal received in a portion of the downlink resource bandwidth portion that does not overlap with the uplink resource bandwidth portion.

[0020] An example non-transitory processor-readable storage medium including processor-readable instructions configured to cause one or more processors in a user equipment (UE) to communicate wirelessly includes: code for configuring a first positioning frequency layer for full-duplex operation; code for configuring a second positioning frequency layer for half-duplex operation; code for providing the first positioning frequency layer to a first mobile device; and code for providing the second positioning frequency layer to a second mobile device.

[0021] The projects and / or technologies described herein may provide one or more of the following capabilities, as well as other capabilities not mentioned. The base station and user equipment may be configured for full-duplex operation. The positioning frequency layer may include information categories designated for full-duplex operation or half-duplex operation. The spectrum may have designated half-duplex regions and full-duplex regions. The positioning reference signal (PRS) resources in the full-duplex region may be ignored by user equipment configured for half-duplex operation. User equipment configured for full-duplex operation may process the PRS resources in the downlink region of the full-duplex region and ignore a portion of the PRS resources in the uplink region. In in-band full-duplex operation, a portion of the downlink region may overlap with the uplink region. The full-duplex user equipment may ignore a portion of the PRS resources in the overlapping region. Other capabilities may be provided, and not every implementation according to the present disclosure must provide any of the capabilities discussed, let alone all of them. Additionally, the effects mentioned above may be achieved by components different from those mentioned, and the projects / technologies mentioned may not necessarily produce the effects mentioned. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a block diagram conceptually showing an example telecommunication system.

[0023] Figure 2 is a block diagram showing an example architecture of a distributed radio access network (RAN) according to certain aspects of the present disclosure.

[0024] Figures 3A to 3C shows different full-duplex communication modes in a telecommunication system.

[0025] Figure 4A and Figure 4B shows examples of different types of full-duplex operation.

[0026] Figure 5 shows an example spectrum for a full-duplex base station and a half-duplex mobile device.

[0027] Figure 6 shows an example spectrum for a full-duplex base station and a full-duplex mobile device.

[0028] Figure 7A and Figure 7B shows an example downlink positioning reference signal resource set.

[0029] Figure 8 shows an example subframe and time slot format for positioning reference signal (PRS) transmission.

[0030] Figure 9 shows an example spectrum for sub-band full-duplex positioning reference signal (PRS) transmission.

[0031] Figure 10 Shows an example spectrum for in-band full-duplex positioning reference signal (PRS) transmission.

[0032] Figure 11 Is a flowchart of an example method for configuring a network for half-duplex operation and full-duplex operation.

[0033] Figure 12 Is a flowchart of an example method for processing a positioning reference signal in a sub-band full-duplex scenario.

[0034] Figure 13 Is a flowchart of an example method for processing a positioning reference signal in an in-band full-duplex scenario.

[0035] Figure 14 Shows a block diagram of an example of a computer system.

[0036] Figure 15 Is a block diagram of an example mobile device.

[0037] Figure 16 Is a block diagram of an example base station. Detailed Description

[0038] Techniques for utilizing positioning reference signals (PRS) in full-duplex scenarios are discussed herein. For example, a positioning frequency layer may include a set of PRS resource sets across one or more base stations. A positioning reference signal (PRS) frequency layer may include information categories designated for full-duplex operation or half-duplex operation. A network may configure a first positioning frequency layer for full-duplex operation and a second positioning frequency layer for half-duplex operation. In one example, PRS resources may span the downlink region and the uplink region in a full-duplex spectrum. Mobile devices with only half-duplex operation capabilities may ignore the PRS resources that span. Mobile devices with full-duplex capabilities may receive and process the portion of the PRS that spans in the downlink region and ignore the portion of the PRS that spans in the uplink region. In one example, downlink PRS may be within one or more downlink bandwidth parts in a sub-band full-duplex configuration, and the mobile device may process the PRS resources within the downlink bandwidth part. In an in-band full-duplex configuration where the uplink frequency and the downlink frequency overlap, the mobile device may receive and process the PRS resources in the non-overlapping downlink bandwidth part. In one example, the sidelink channel (e.g., UE-to-UE) may be modified by the frequency layer to enable full-duplex and / or half-duplex operation. These techniques are only examples and are not exhaustive.

[0039] The following description provides examples and does not limit the scope, applicability, or examples set forth in the claims. Changes may be made to the functionality and arrangement of the elements discussed without departing from the scope of the disclosure. Various examples may omit, substitute, or add various processes or components as appropriate. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, and / or combined. Also, features described with respect to some examples may be combined in some other examples. For example, any number of aspects set forth herein may be used to implement an apparatus or practice a method. Additionally, the scope of the disclosure is intended to cover this apparatus or method practicing the apparatus or method with other structures, functionality, or structures and functionality that supplement or substitute for those of the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claims. The word "exemplary" is used herein to mean "serving as an example, instance, or illustration". Any aspect described herein as "exemplary" is not necessarily to be construed as preferred or more advantageous than other aspects.

[0040] The techniques described herein can be used for various wireless communication technologies such as 3GPP Fifth Generation New Radio (5G NR). 5G NR is an emerging wireless communication technology developed in conjunction with the 5G Technology Forum (5GTF). NR access (e.g., 5G NR) can support various wireless communication services such as enhanced mobile broadband (eMBB) targeted at broadband (e.g., 80 MHz or higher), millimeter wave (mmW) targeted at high carrier frequencies (e.g., 25 GHz or higher), massive machine type communication MTC (mMTC) targeted at non-backward compatible MTC technology, and / or mission critical targeted at ultra-reliable low latency communication (URLLC). These services can include latency and reliability requirements. These services can also have different transmission time intervals (TTIs) to meet the corresponding quality of service (QoS) requirements. Additionally, these services can coexist in the same subframe.

[0041] The techniques described herein can be used for 5G NR wireless networks and radio technologies as well as other wireless networks and radio technologies.

[0042] Reference Figure 1 , an example wireless communication network 100 is shown. The wireless communication network 100 can be a full-duplex NR system (e.g., a full-duplex 5G network). In one example, a mobile device (such as user equipment (UE) 120a) has a BW component 160 that can be configured to adjust the operating bandwidth (BW) of the UE 120a. Similarly, a base station (BS) 110a can include a BW configuration component 170 that can configure a UE (such as UE 120a) to adjust the operating BW.

[0043] The wireless communication network 100 may include several base stations (BSs) 110 and other network entities. A BS may be a base station that communicates with a user equipment (UE). Each BS 110 may provide communication coverage for a specific geographical area. In 3GPP, the term "cell" may refer to the coverage area of a Node B (NB) and / or the NB subsystem serving the coverage area, depending on the context in which the term is used. In an NR system, the terms "cell" and BS, next-generation Node B (gNB or gNodeB), access point (AP), distributed unit (DU), carrier, or transmit receive point (TRP) may be used interchangeably. In some examples, a cell may not necessarily be fixed, and the geographical area of a cell may move according to the location of a mobile BS. In some examples, BSs may be interconnected with each other and / or with one or more other BSs or network nodes (not shown) in the wireless communication network 100 using any suitable transport network via various types of backhaul interfaces such as direct physical connections, wireless connections, virtual networks, etc.

[0044] Generally, any number of wireless networks may be deployed in a given geographical area. Each wireless network may support a specific radio access technology (RAT) and may operate on one or more frequencies. A RAT may also be referred to as a radio technology, air interface, etc. A frequency may also be referred to as a carrier, subcarrier, frequency channel, tone, subband, etc. Each frequency may support a single RAT in a given geographical area to avoid interference between wireless networks of different RATs. In some cases, an NR or 5G RAT network may be deployed.

[0045] The BS can provide communication coverage for macro cells, pico cells, femto cells, and / or other types of cells. A macro cell can cover a relatively large geographical area (e.g., with a radius of several kilometers) and can allow unrestricted access by UEs with service subscriptions. A pico cell can cover a relatively small geographical area and can allow unrestricted access by UEs with service subscriptions. A femto cell can cover a relatively small geographical area (e.g., a home) and can allow unrestricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs of home users, etc.). The BS for a macro cell can be referred to as a macro BS. The BS for a pico cell can be referred to as a pico BS. The BS for a femto cell can be referred to as a femto BS or a home BS. BSs 110a, 110b, and 110c can be macro BSs for macro cells 102a, 102b, and 102c, respectively. BS 110x can be a pico BS for pico cell 102x. BSs 110y and 110z can be femto BSs for femto cells 102y and 102z, respectively. The BS can support one or more (e.g., three) cells.

[0046] The wireless communication network 100 can also include relay stations. A relay station is a station that receives transmissions of data and / or other information from an upstream station (e.g., a BS or a UE) and emits transmissions of the data and / or other information to a downstream station (e.g., a UE or a BS). A relay station can also be a UE that relays transmissions for other UEs. Relay station 110r can communicate with BS 110a and UE 120r to facilitate communication between BS 110a and UE 120r. A relay station can also be referred to as a relay BS, a relay, etc.

[0047] The wireless communication network 100 can be a heterogeneous network including different types of BSs (e.g., macro BSs, pico BSs, femto BSs, relays, etc.). These different types of BSs can have different transmission power levels, different coverage areas, and different impacts on interference in the wireless communication network 100. For example, a macro BS can have a high transmission power level (e.g., 20 watts), while pico BSs, femto BSs, and relays can have lower transmission power levels (e.g., 1 watt).

[0048] The wireless communication network 100 can support synchronous or asynchronous operation. For synchronous operation, BSs can have similar frame timings, and transmissions from different BSs are approximately aligned in time. For asynchronous operation, BSs can have different frame timings, and transmissions from different BSs may not be aligned in time. The techniques described herein can be used for both synchronous and asynchronous operations.

[0049] The network controller 130 can be coupled to the set of BSs and provide coordination and control for these BSs. The network controller 130 can communicate with the BS 110 via the backhaul. The BSs 110 can also communicate with each other via a wireless or wired backhaul (e.g., directly or indirectly).

[0050] UEs 120 (e.g., 120a, 120b, 120x, 120y, etc.) can be dispersed throughout the wireless communication network 100, and each UE can be fixed or mobile. A UE can also be referred to as a mobile device, mobile station, terminal, access terminal, subscriber unit, station, customer premise equipment (CPE), cellular phone, smart phone, personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, laptop computer, cordless phone, wireless local loop (WLL) station, tablet computer, camera, gaming device, netbook, smartbook, ultrabook, appliance, medical device / equipment, biometric sensor / device, wearable device (such as a smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet, etc.)), entertainment device (e.g., music device, video device, satellite broadcast, etc.), vehicle component or sensor, smart meter / sensor, industrial manufacturing device, global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium. Some UEs can be regarded as machine-type communication (MTC) devices or evolved MTC (eMTC) devices. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., that can communicate with a BS, another device (e.g., a remote device), or some other entity. A wireless node can provide a connection to or with a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs can be regarded as Internet of Things (IoT) devices, which can be narrowband IoT (NB-IoT) devices.

[0051] Some wireless networks (e.g., LTE) utilize Orthogonal Frequency Division Multiplexing (OFDM) on the downlink and Single Carrier Frequency Division Multiplexing (SC-FDM) on the uplink. OFDM and SC-FDM divide the system bandwidth into multiple (K) orthogonal subcarriers, which are often also referred to as tones, frequency segments, etc. Each subcarrier can be modulated with data. Typically, modulation symbols are sent using OFDM in the frequency domain and SC-FDM in the time domain. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers (K) can depend on the system bandwidth. For example, the subcarrier spacing can be 15 kHz, and the minimum resource allocation (referred to as a "resource block" (RB)) can be 12 subcarriers (or 180 kHz). Thus, for system bandwidths of 1.25, 2.5, 5, 10, or 20 megahertz (MHz), the nominal Fast Fourier Transform (FFT) size can be equal to 128, 256, 512, 1024, or 2048 respectively. The system bandwidth can also be divided into subbands. For example, one subband can cover 1.08 MHz (e.g., 6 RBs), and there can be 1, 2, 4, 8, or 16 subbands for system bandwidths of 1.25, 2.5, 5, 10, or 20 MHz respectively. In LTE, the basic Transmission Time Interval (TTI) or packet duration is a 1 ms subframe. In NR, the subframe is still 1 ms, but the basic TTI is called a slot. The subframe contains a variable number of slots (e.g., 1, 2, 4, 8, 16... slots), which depends on the subcarrier spacing. An NR RB is 12 consecutive frequency subcarriers. NR can support a basic subcarrier spacing of 15 kHz, and other subcarrier spacings can be defined relative to the basic subcarrier spacing, such as 30 kHz, 60 kHz, 120 kHz, 240 kHz, etc. Symbol and slot lengths scale with the subcarrier spacing. The CP length also depends on the subcarrier spacing. NR can support the transmission of positioning reference signals (PRS) in one or more slots as described herein.

[0052] NR can utilize OFDM with CP on both the uplink and downlink and includes support for half-duplex operation using TDD. Beamforming can be supported and the beam direction can be configured dynamically. MIMO transmission with precoding can also be supported. In some examples, the MIMO configuration in the DL can support up to 8 transmit antennas, where multi-layer DL transmission has a maximum of 8 streams, while each UE has a maximum of 2 streams. In some examples, multi-layer transmission with a maximum of 2 streams per UE can be supported. Aggregation of multiple cells can be supported with up to 8 serving cells.

[0053] In some examples, access to an air interface can be scheduled. A scheduling entity (e.g., a BS) allocates resources for communication among some or all of the devices and equipment within its serving area or cell. The scheduling entity can be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduled communication, the subordinate entities utilize the resources allocated by the scheduling entity. A base station is not the only entity that can act as a scheduling entity. In some examples, a UE can act as a scheduling entity and can schedule resources for one or more subordinate entities (e.g., one or more other UEs), and the other UEs can use the resources scheduled by the UE for wireless communication. In some examples, a UE can act as a scheduling entity in a peer-to-peer (P2P) network and / or a mesh network. In a mesh network example, in addition to communicating with the scheduling entity, UEs can also communicate directly with each other.

[0054] In some examples, two or more subordinate entities (e.g., UEs) can communicate with each other using sidelink signals. Practical applications of such sidelink communication can include public safety, proximity services, UE-to-network relay, vehicle-to-vehicle (V2V) communication, Internet of Everything (IoE) communication, IoT communication, mission-critical mesh networks, and / or various other suitable applications. Generally, a sidelink signal can refer to a signal that is communicated from one subordinate entity (e.g., UE 1) to another subordinate entity (e.g., UE 2) without relaying the transmission through a scheduling entity (e.g., a UE or a BS), even though a scheduling entity can be used for scheduling and / or control purposes. In some examples, licensed spectrum (as opposed to wireless local area networks that typically use unlicensed spectrum) can be used to communicate sidelink signals. In one example, a sidelink signal can be configured for full-duplex or half-duplex operation. A positioning frequency layer can be used to facilitate full-duplex and / or half-duplex UE-to-UE transmission for sidelink positioning applications.

[0055] In Figure 1 which, the solid line with double arrows indicates the desired transmission between the UE and the serving BS, which is the BS designated to serve the UE on the downlink and / or uplink. The thin dashed line with double arrows indicates a transmission that potentially interferes with the transmission between the UE and the BS.

[0056] Reference Figure 2 shows, for example, in Figure 1 the wireless communication network 100 of) example components of BS 110 and UE 120. The components include antenna 252, processors 266, 258, 264, and / or controller / processor 280 of UE 120 and / or antenna 234, processors 220, 230, 238, and / or controller / processor 240 of BS110 that can be used to perform the various techniques and methods described herein.

[0057] At BS 110, the transmit processor 220 may receive data from the data source 212 and control information from the controller / processor 240. For an LTE system, the control information may be used for Physical Broadcast Channel (PBCH), Physical Control Format Indicator Channel (PCFICH), Physical Hybrid ARQ Indicator Channel (PHICH), Physical Downlink Control Channel (PDCCH), Group Common PDCCH (GCPDCCH), etc. The data may be used for Physical Downlink Shared Channel (PDSCH), etc. The processor 220 may process the data and control information (e.g., encode and symbol map them) to obtain data symbols and control symbols respectively. The transmit processor 220 may also generate reference symbols such as for Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS), Cell-Specific Reference Signal (CRS), and Positioning Reference Signal (PRS). For an NR system, the control information may include logical and transport channels, which include Broadcast Control Channel (BCCH), Paging Control Channel (PCCH), Common Control Channel (CCCH), Dedicated Control Channel (DCCH), Dedicated Traffic Channel (DTCH), Broadcast Channel (BCH), Paging Channel (PCH), and Downlink Shared Channel (DL-SCH). Physical channels in a 5G NR system may include PBCH, PDCCH, and PDSCH. Physical signals may include Demodulation Reference Signal (DM-RS), Phase Tracking Reference Signal (PT-RS), Channel State Information Reference Signal (CSI-RS), Primary Synchronization Signal and Secondary Synchronization Signal (PSS / SSS), and Downlink PRS (DL PRS).

[0058] The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, control symbols, and / or reference symbols (if applicable), and may provide output symbol streams to the modulators (MOD) 232a to 232t. Each modulator 232 may process the corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator may further process the output sample stream (e.g., convert it to analog, amplify it, filter it, and up-convert it) to obtain a downlink signal. The downlink signals from the modulators 232a to 232t may be transmitted via antennas 234a to 234t respectively.

[0059] At the UE 120, antennas 252a through 252t may receive downlink signals from the BS 110 and may provide the received signals to demodulators (DEMODs) in transceivers 254a through 254r, respectively. Each demodulator 254 may condition the respective received signal (e.g., filter it, amplify it, down-convert it, and digitize it) to obtain input samples. Each demodulator may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. The MIMO detector 256 may obtain the received symbols from all demodulators 254a through 254r, perform MIMO detection on the received symbols (if applicable), and provide the detected symbols. The receive processor 258 may process the detected symbols (e.g., demodulate them, de-interleave them, and decode them), provide the decoded data for the UE 120 to the data sink 260, and provide the decoded control information to the controller / processor 280.

[0060] On the uplink, at the UE 120, the transmit processor 264 may receive and process data from the data source 262 (e.g., for the physical uplink shared channel (PUSCH)) and control information from the controller / processor 280 (e.g., for the physical uplink control channel (PUCCH)). The transmit processor 264 may also generate reference symbols for reference signals (e.g., for sounding reference signals (SRS)). The symbols from the transmit processor 264 may be precoded by the TX MIMO processor 266 (if applicable), further processed by demodulators in transceivers 254a through 254r (e.g., for SC-FDM, etc.), and transmitted to the base station 110. At the BS 110, the uplink signal from the UE 120 may be received by the antenna 234, processed by the modulator 232, detected by the MIMO detector 236 (if applicable), and further processed by the receive processor 238 to obtain the decoded data and control information sent by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and provide the decoded control information to the controller / processor 240.

[0061] The controller / processors 240 and 280 may direct operations at the BS 110 and the UE 120, respectively. The controller / processor 240 and / or other processors and modules at the BS 110 may perform or direct the execution of processes for the techniques described herein. The memories 242 and 282 may store data and program codes for the BS 110 and the UE 120, respectively. The scheduler 244 may schedule the UE for data transmission on the downlink and / or uplink.

[0062] The 5G NR wireless network is expected to provide ultra-high data rates and support a wide range of application scenarios. Wireless full-duplex (FD) communication is an emerging technology and can theoretically double the link capacity when compared with half-duplex (HD) communication. The main idea of wireless full-duplex communication is to enable radio network nodes to transmit and receive simultaneously on the same frequency band in the same time slot and / or symbol time slot. This is in contrast to conventional half-duplex operation where transmission and reception are different in time or frequency. The wireless communication network 100 can support various FD communication modes.

[0063] Reference Figure 3A , further reference Figure 1 and Figure 2 , FIG. 300 shows an illustration of a full-duplex communication mode with a full-duplex base station and half-duplex UEs. The illustration includes an FD BS 302, an HD BS 304, a first HD UE 306, and a second HD UE 308. The FD BS 302 can communicate with two HD UEs 306, 308 simultaneously in UL and DL using the same radio resources. For example, the FD BS 302 can communicate with the first HD UE 306 via the downlink 310 and communicate with the second HD UE 308 using the uplink 312. The FD BS 302 may be vulnerable to self-interference 302a from its downlink to uplink operation and interference 312 from other gNBs (such as the HD BS 304). The first HD UE 306 may be vulnerable to interference 314 from the HD BS 304 and interference 316 from the second HD UE 308.

[0064] Reference Figure 3B , FIG. 330 shows an illustration of another full-duplex communication mode with a full-duplex base station and full-duplex UEs. The illustration 330 includes an FD BS 302, an HD BS 304, an FD UE 336, and an HD UE 308. The FD BS 302 and the FD UE 336 are configured to communicate simultaneously via the UL 334 and the DL 332 using the same radio resources. The HD BS 304 is communicating with the HD UE 308 via the DL 338. During communication, the FD UE 336 may be vulnerable to self-interference 336a and interference 338a from other gNBs (such as the HD BS 304). The FD UE 336 may also be vulnerable to interference transmitted from the HD UE 308.

[0065] Reference Figure 3C, illustration 350 of another full-duplex communication mode with a full-duplex UE. Illustration 350 includes a first HDBS 352, a second HD BS 354, an FD UE 336, and an HD UE 308. The FD UE 336 is configured to communicate simultaneously with multiple transmit-receive points (e.g., multiple BSs) in both the UL and the DL using the same radio resources. For example, the FD UE 336 can communicate with the first HD BS 352 via the UL 334 and, simultaneously, communicate with the second HD BS 354 via the DL 356. The FDUE 336 may be vulnerable to self-interference 336a from UL to DL operation. In one example, both UE1 336 and UE 2 308 can be configured as FD UEs and be capable of full-duplex communication via a device-to-device (D2D) sidelink (e.g., PC5).

[0066] In addition to supporting various FD communication modes (also referred to as deployments herein), a wireless communication system can also support various types of FD operation. For example, in-band full-duplex (IBFD) is a type of FD operation where a device can transmit and receive at the same time and on the same frequency resource. As Figure 4A shown in 410 of Figure 4A , in one aspect, the DL and the UL can fully share the same IBFD time / frequency resource (e.g., there can be a complete overlap of the DL and UL configurations within the IBFD time / frequency resource). As

[0067] shown in 420 of Figure 4B , in one aspect, the DL and the UL can partially share the same IBFD time / frequency resource (e.g., there can be a partial overlap of the DL and UL configurations within the IBFD time / frequency resource).

[0068] Reference Figure 5 , and further reference Figures 1 to 4B , shows an example spectrum 500 for a full-duplex base station and a half-duplex mobile device. In some aspects, there can be flexible DL / UL operation in time (across time slots and within a time slot) and across multiple UEs. Figure 5Shows an example usage of time / frequency resources for an FD BS 502 (e.g., gNB) and multiple HD UEs (e.g., UE 1, UE 2, and UE 3). As shown in spectrum 500, for the same subframe / slot (for different UEs), there can be simultaneous PDSCH grants and PUSCH grants.

[0069] Reference Figure 6 , and further reference Figures 1 to 5 , shows an example spectrum 600 for a full-duplex base station and a full-duplex mobile device. Figure 6 Shows another example usage of time / frequency resources for an FD BS 602 and FD UEs. As shown in spectrum 600, compared with the spectrum 500 in Figure 5 , for the same subframe / slot for the same UE (e.g., UE 2) and / or different UEs, there can be simultaneous PDSCH grants and PUSCH grants. For example, for an FD UE (e.g., UE 2), there can be simultaneous UL grants and DL grants.

[0070] Reference Figure 7A and Figure 7B , shows an exemplary DL-PRS resource set. Generally, a DL-PRS resource set is a collection of PRS resources with the same periodicity across time slots, common quiescent pattern configuration, and the same repetition factor across base stations (e.g., TRPs). The first DL-PRS resource set 702 includes 4 resources and a repetition factor of 4, and the time gap is equal to 1 time slot. The second DL-PRS resource set 704 includes 4 resources and a repetition factor of 4, and the time gap is equal to 4 time slots. The repetition factor indicates the number of times each PRS resource repeats in each single instance of the PRS resource set (e.g., values 1, 2, 4, 6, 8, 16, 32). The time gap represents the offset in time slots between two repeated instances of the corresponding same PRS resource ID of the DL PRS resources within a single instance of the DL PRS resource set (e.g., values 1, 2, 4, 8, 16, 32). The duration spanned by one DLPRS resource set including repeated DL PRS resources does not exceed the PRS periodicity. The repetition of the DL PRS resources enables cross-repeated receiver beam scanning and combines RF gain to increase coverage. This repetition can also achieve in-instance quiescence.

[0071] Reference Figure 8 , shows an example subframe and time slot format for positioning reference signal transmission. The example subframe and time slot format are included in the DL-PRS resource sets depicted in Figure 7A and Figure 7B . Figure 8The subframe and slot formats therein are examples and not limitations, and include format 802 with 2 symbols per comb 2, format 804 with 4 symbols per comb 4, format 806 with 12 symbols per comb 2, format 808 with 12 symbols per comb 4, format 810 with 6 symbols per comb 6, format 812 with 12 symbols per comb 12, format 814 with 6 symbols per comb 2, and format 816 with 12 symbols per comb 6. Generally, a subframe may include 14 symbol periods with indices from 0 to 13. The subframe and slot formats may be used for the Physical Broadcast Channel (PBCH). Typically, the base station may transmit PRS from antenna port 6 on one or more slots in each subframe configured for PRS transmission. The base station may avoid transmitting PRS on resource elements configured for PBCH, Primary Synchronization Signal (PSS), or Secondary Synchronization Signal (SSS), regardless of its antenna port. The cell may generate reference symbols for PRS based on the cell ID, symbol period index, and slot index. Typically, the UE may be able to distinguish PRS from different cells.

[0072] The base station may transmit DL PRS through a specific PRS bandwidth that can be configured by a higher layer. The base station may transmit PRS on subcarriers spaced apart across the PRS bandwidth. The base station may also transmit PRS based on parameters such as PRS periodicity T PRS , subframe offset △ PRS and PRS duration N PRS . The PRS periodicity is the periodicity of transmitting PRS. For example, the PRS periodicity may be 160 ms, 320 ms, 640 ms, or 1280 ms. The subframe offset indicates the specific subframe in which PRS is transmitted. And the PRS duration indicates the number of consecutive subframes in which PRS is transmitted in each period (PRS occasion) of PRS transmission. The PRS duration may be, for example, 1 ms, 2 ms, 4 ms, or 6 ms.

[0073] The PRS periodicity TPRS and subframe offset △ PRS may be conveyed via the PRS configuration index I PRS . The PRS configuration index and PRS duration may be configured independently by a higher layer. The set of N PRS consecutive subframes in which PRS is transmitted may be referred to as a PRS occasion. Each PRS occasion may be enabled or silenced. For example, the UE may apply a silence bit to each cell. A cell that may be silenced in the next PRS occasion should not be measured. A PRS resource set is a set of PRS resources across base stations with the same periodicity, common silence pattern configuration, and the same repetition factor across slots (e.g., 1, 2, 4, 6, 8, 16, 32 slots).

[0074] In one example, a positioning frequency layer may be a set of PRS resource sets across one or more base stations. The positioning frequency layer may have the same subcarrier spacing (SCS) and cyclic prefix (CP) type, the same point A, the same DL PRS bandwidth value, the same starting PRB, and the same comb size value. The numerology that supports PDSCH supports PRS.

[0075] Reference Figure 9 , an example spectrum 900 for subband full-duplex positioning reference signal (PRS) is shown. Spectrum 900 is an example use of the time / frequency resources (such as full-duplex spectrum 500, full-duplex spectrum 600) of an FD UE with PRS resources added. For example, spectrum 900 includes a first DL PRS transmission 902, a second DL PRS transmission 904, and a third DL PRS transmission 906. The first DL PRS transmission 902 occurs during the downlink region and does not overlap with the uplink region (e.g., PUSCH). The second DL PRS transmission 904 and the third DL PRS transmission 906 overlap with the uplink region. In previous systems, when no measurement gap was configured, the UE was only required to measure the DL PRS within the active DL BWP and having the same numerology as the active DL BWP. If no measurement gap was provided to the UE, it was not expected that the UE would process the DL PRS resources on the serving cell or non-serving cells on any symbol indicated as UL by the serving cell. Therefore, in the current system, the second DL PRS transmission 904 and the third DL PRS transmission 906 would not be processed by the UE, so they are wasted transmissions. The techniques provided herein overcome this limitation and enable the UE to process the DL PRS resources in the full-duplex spectrum.

[0076] In one example, in the BS 110 or other resources in the wireless communication network 100, the PRS resources may be configured based on whether the time slot is in the half-duplex (HD) region or the full-duplex (FD) region. The positioning frequency layer may be extended by including a field or other information element (IE) to indicate the information of the time slot category (HD or FD) in the definition of the positioning frequency layer. The positioning frequency layer may include a set of PRS resource sets with the same type of HD time slots or FD time slots across one or more base stations (e.g., TRP). The network may configure PRS separately for FD operation and HD operation. For example, one positioning frequency layer may be configured for FD time slots, and another positioning frequency layer may be provided for HD time slots.

[0077] In another example, the PRS resources can be configured across a wide bandwidth, and the PRS resources can span the HD region and the FD region. In this example, the UE can be configured to process the DL PRS resources based on the UE's capabilities. For example, the UE can report its capabilities as an HD UE (i.e., cannot transmit and receive at the same time) or an FD UE (i.e., can transmit and receive at the same time). The HD UE can be configured to skip DL PRS reception / processing that may occur during the UL region. For example, the HD UE can process the first DL PRS transmission 902 and skip the second DL PRS reception / processing and the third DL PRS reception / processing (i.e., based on the second DL PRS transmission 904 and the third DL PRS transmission 906). The FD UE can be configured to process the DL PRS transmissions or parts of the DL PRS transmissions that do not conflict with the UL subbands. For example, the FD UE can process the first DL PRS transmission 902, the second DL PRS transmission 904, and the third DL PRS transmission 906, excluding the first conflicting subband part 904a and the second conflicting subband part 906a. The processing of the second DL PRS transmission 904 and the third DL PRS transmission 906, while excluding the corresponding conflicting subband parts 904a, 906a, will generate reasonable correlation peaks and enable position estimation. In one example, the processed parts of the second DL PRS transmission 904 and the third DL PRS transmission 906 can be correlated with the first DL PRS transmission 902 to generate correlation peaks.

[0078] Reference Figure 10, shows an example spectrum 1000 for in-band full-duplex positioning reference signal (PRS) transmission. In one example, to avoid bandwidth part (BWP) switching latency, DL PRS transmission can be configured and processed within the indicated resource bandwidth (BW) of the active BWP. The active DL BWP 1001 can span the active UL BWP 1006. A first resource BW 1002 and a second resource BW 1004 can be defined within the active DL BWP 1001. The second resource BW 1004 includes a mutually exclusive set of frequency resources across the DL BWP 1001 (i.e., it is not continuous across the DL BWP 1001). The second resource BW 1004 includes frequencies outside the active UL BWP 1006. The resource BW 1002 and the resource BW 1004 can be configured via radio resource control (RRC) signaling, and the indication of the resource BW can be dynamic (e.g., based on downlink control information (DCI)). The first resource BW 1002 includes a first DL PRS transmission 1012, and the second resource BW 1004 includes a second DL PRS transmission 1014. In the current system, if no PRS measurement gap is provided, it is not expected that the UE measures the DL PRS that does not utilize the entire active DL BWP 1001. Thus, the current UE can utilize the first DL PRS transmission 1012, but not the second DL PRS transmission 1014.

[0079] In one example, the UE can be configured as an HD UE or an FD UE based on its capabilities. The HD UE can be configured to process the first DL PRS transmission 1012 and skip the second DL PRS reception / processing (i.e., the PRS in the full-duplex region). The performance of the FD UE can vary based on the type of full-duplex operation. Figure 10 Shows sub-band full-duplex (SBFD) where the resource BWs do not overlap. In SBFD operation, since the second DL PRS transmission 1014 does not overlap with the active UL BWP 1006, the FD UE can process the first DL PRS transmission 1012 and the second DL PRS transmission 1014. In in-band full-duplex (IBFD) operation, the active UL BWP 1006 can be extended to create a partial overlap between the UL resource BW and the DL resource BW. For example, the active UL BWP 1006 can be extended Figure 10The quantity indicated as 1006a. The extended quantity 1006a will result in an overlapping region 1008 in the second DL PRS transmission 1014 with the active UL BWP. The overlapping region 1008 indicates the part of the subband where UL resources and DL resources are in conflict. In IBFD operation, the FD UE can be configured to process the part of the DL PRS transmission that does not conflict with the active UL BWP. For example, the FD UE can be configured to process the part of the second DL PRS transmission 1014 that is not within the overlapping region 1008.

[0080] Reference Figure 11 , further reference Figures 1 to 10 , A method 1100 for configuring a network for half-duplex operation and full-duplex operation includes the illustrated phases. However, method 1100 is merely an example and not restrictive. Method 1100 can be changed, for example, by adding, removing, rearranging, combining, executing phases simultaneously, and / or splitting a single phase into multiple phases.

[0081] At stage 1102, the method includes configuring a first positioning frequency layer for full-duplex operation. The base station 110 or other network server is the component for configuring the positioning frequency layer. The UE can be configured with one or more DL PRS positioning frequency layer configurations based on high-layer parameters (e.g., DL-PRS-PositioningFrequencyLayer (DL-PRS - positioning frequency layer)). The positioning frequency layer consists of one or more PRS resource sets and can be defined by the subcarrier spacing (SCS) for the DL PRS resources, the cyclic prefix (CP) for the DL PRS resources, and the absolute frequency of the reference resource block (PointA). The UE can also be configured with one or more DL PRS resource set configurations. Each DL PRS resource set can include an ID, a periodicity value, a repetition factor, a time gap offset, a silent pattern, a slot offset value, a comb size, and the number of resource blocks configured for PRS transmission (see 3GPP TS 38.214 version 16). The DL PRS positioning frequency layer configuration can be extended to include a slot category field to associate the frequency configuration with full-duplex (FD) operation or half-duplex (HD) operation. In one example, the positioning frequency layer can include information for FD D2D operation and HD D2D operation. At stage 1102, the slot category field can be updated to indicate that the first positioning frequency layer is configured for full-duplex operation, and at stage 1104, the slot category field can be updated to indicate that the second positioning frequency layer is configured for half-duplex operation.

[0082] At stage 1106, the method includes providing a first positioning frequency layer to a first mobile device. The base station 110 is a component for providing the positioning frequency layer. The first mobile device may be a UE configured for full-duplex operation. The base station 110 may be configured to provide a DL PRS resource set to the UE via a messaging protocol such as RRC. The first mobile device may utilize the DL PRS resource set to process DL PRS transmissions that may span the DL region and the UL region (such as depicted in Figure 9 and Figure 10 ). At stage 1108, the base station may provide a second positioning frequency layer to a mobile device configured for half-duplex operation. For example, the DL PRS resource set in the second positioning frequency layer may enable an HD UE to skip the reception / processing of DL PRS that may span the DL region and the UL region (such as depicted in Figure 9 and Figure 10 ).

[0083] Reference Figure 12 , and further reference Figure 9 , the method 1200 for processing positioning reference signals in a sub-band full-duplex scenario includes the stages shown. However, the method 1200 is merely an example and not restrictive. The method 1200 may be altered, for example, by adding, removing, rearranging, combining, performing stages simultaneously, and / or splitting a single stage into multiple stages.

[0084] At stage 1202, the method includes receiving a positioning reference signal in a time slot, where the positioning reference signal spans a first frequency bandwidth. The UE 120 is a component for receiving the positioning reference signal. The UE 120 may be configured for full-duplex operation. The base station 110 is configured to transmit a PRS signal based on parameters determined in an advanced application and disseminated via a signaling message such as RRC. In one example, the UE may be configured to transmit a PRS signal for FD D2D positioning applications. The UE 120 is configured to receive and process the PRS transmission in the indicated time slot. As used herein, the term time slot may also include symbol time slots (such as defined in the NR specification). For example, the UE 120 may receive a second DL PRS transmission 904 that spans the first frequency bandwidth and may include both a downlink region and an uplink region.

[0085] At stage 1204, the method includes transmitting a signal in a second frequency bandwidth during the time slot, where the second frequency bandwidth includes frequencies within the first frequency bandwidth. UE 120 is a component for transmitting a signal in a time slot. UE 120 may be configured as an FD UE capable of simultaneously transmitting and receiving signals. UE 120 may receive one or more control messages from a base station to configure the first frequency bandwidth and the second frequency bandwidth. In one example, radio resource control (RRC) signaling may be used to configure the first bandwidth and the second bandwidth. As Figure 9 depicted, UE 120 may transmit UL data during a time slot or symbol time slot in which a second DL PRS transmission 904 is being received (e.g., via PUSCH). The second DL PRS transmission 904 spans the DL region and the UL region of the spectrum 900. The sub-band portion 904a of the second DL PRS transmission 904 conflicts with the UL region. In one example, UE 120 may communicate with an FD base station such that a PRS signal may be received from the FD base station and the UE may transmit a signal to the FD base station (e.g., Figure 3B ). In one example, UE 120 may be configured to communicate with multiple base stations such that a PRS may be received from a first base station and the transmission from the UE may be an uplink to a second base station (e.g., Figure 3C ).

[0086] At stage 1206, the method includes processing a positioning reference signal received in the first frequency bandwidth excluding the frequencies in the second frequency bandwidth. UE 120 is a component for processing a PRS signal. For example, UE 120 is configured to process the second DL PRS transmission 904 that is not included in the sub-band portion 904a. Processing the second DL PRS transmission 904 while excluding the conflicting sub-band portion 904a will result in a reasonable correlation peak and enable position estimation. In one example, the processed portion of the second DL PRS transmission 904 may be correlated with the first DL PRS transmission 902 to generate a correlation peak.

[0087] Reference Figure 13 and further reference Figure 10 , a method 1300 for processing a positioning reference signal in an in-band full-duplex scenario includes the stages shown. However, method 1300 is merely an example and not restrictive. Method 1300 may be changed, for example, by adding, removing, rearranging, combining, executing stages simultaneously, and / or splitting a single stage into multiple stages.

[0088] At stage 1302, the method includes receiving a positioning reference signal in a downlink resource bandwidth portion. UE 120 is a component for receiving the positioning reference signal. UE 120 may be configured for full-duplex operation. The base station 110 is configured to transmit a PRS signal based on parameters determined in an advanced application and disseminated via a signaling message such as RRC. UE 120 is configured to receive and process the PRS transmission in a configured bandwidth portion (BWP). For example, UE 120 may be configured to receive configuration parameters for a first resource BW 1002 and a second resource BW 1004. Resource BW 1002, resource BW 1004 include a corresponding first DL PRS transmission 1012 and a second DL PRS transmission 1014.

[0089] At stage 1304, the method includes transmitting a signal in an uplink resource bandwidth portion, where the uplink resource bandwidth portion overlaps at least a portion of the downlink resource bandwidth portion. UE 120 is a component for transmitting a signal in the uplink resource bandwidth portion. UE 120 may be configured as an FDUE capable of simultaneously transmitting and receiving signals. For example, as Figure 10 depicted, UE 120 may simultaneously transmit UL data in the extended UL BWP 1006a (e.g., via PUSCH) while receiving the second resource BW1004 including the second DL PRS transmission 1014. In one example, UE 120 may communicate with an FD base station such that a PRS signal can be received from the FD base station, and the UE may transmit a signal to the FD base station (e.g., Figure 3B ). In one example, UE 120 may be configured to communicate with multiple base stations such that a PRS can be received from a first base station, and the transmission from the UE may be an uplink to a second base station (e.g., Figure 3C ).

[0090] At stage 1306, the method includes processing a positioning reference signal received in a portion of the downlink resource bandwidth portion that does not overlap with the uplink resource bandwidth portion. UE 120 is a component for processing the PRS signal. In one example, the extended UL BWP 1006a overlaps with the second resource BW 1004. UE 120 is configured to process the second DL PRS transmission 1014 that is not included in the overlapping region 1008. Processing the second DL PRS transmission 1014 while excluding the overlapping region 1008 will result in a reasonable correlation peak and enable position estimation. In one example, the processing portion of the second DL PRS transmission 1014 may be correlated with the first DL PRS transmission 1012 to generate a correlation peak.

[0091] As Figure 14The computer system shown can be incorporated as part of the previously described computerized devices such as BS 110, UE 120, and network controller 130. The computer system 1400 can be configured to execute the methods provided by the various other embodiments described herein, and / or can act as a network server, a mobile device, and / or a computer system. It should be noted that Figure 14 this is only meant to provide a general illustration of the various components, and any one or all of them may be utilized as appropriate. Thus, Figure 14 it is shown broadly how the individual system elements may be implemented in a relatively separated or relatively more integrated manner.

[0092] The computer system 1400 is shown as including hardware elements (or may communicate in other ways as appropriate) that can be electrically coupled via a bus 1405. The hardware components can include: one or more processors 1410, including but not limited to one or more general-purpose processors and / or one or more dedicated processors (such as digital signal processing chips, graphics acceleration processors, etc.); one or more input devices 1415, which may include but are not limited to a mouse, a keyboard, etc.; and one or more output devices 1420, which may include but are not limited to a display device, a printer, etc.

[0093] The computer system 1400 may also include one or more non-transitory storage devices 1425 (and / or communicate therewith), which may include but are not limited to local and / or network-accessible storage devices, and / or may include but are not limited to disk drives, drive arrays, optical storage devices, solid-state storage devices, such as random access memory (“RAM”) and / or read-only memory (“ROM”) (which may be programmable, flash-updatable, etc.). Such storage devices can be configured to implement any suitable data storage, including but not limited to various file systems, database structures, etc.

[0094] The computer system 1400 may also include a communication subsystem 1430, which may include but is not limited to a modem, a network card (wireless network card or wired network card), an infrared communication device, a wireless communication device, and / or a chipset (such as a Bluetooth® device, an 802.11 device, a Wi-Fi device, a WiMax device, a cellular communication facility, etc.). The communication subsystem 1430 can allow data to be exchanged with a network, other computer systems, and / or any other devices described herein. In many embodiments, the computer system 1400 will further include a working memory 1435, which may include a RAM or ROM device as described above.

[0095] The computer system 1400 may also include software elements shown as being located within the working memory 1435, which includes an operating system 1440, device drivers, executable libraries, and / or other code, such as one or more application programs 1445. The one or more application programs may include computer programs provided by various embodiments, and / or may be designed to implement the methods provided by other embodiments and / or configure the systems provided by other embodiments as described herein. By way of example only, one or more programs described with respect to the methods discussed above may be implemented as code and / or instructions executable by a computer (and / or a processor within the computer); in one aspect, such code and / or instructions may then be used to configure and / or condition a general purpose computer (or other device) to perform one or more operations in accordance with the described methods.

[0096] A set of such instructions and / or code may be stored on a computer-readable storage medium, such as the storage device 1425 described above. In some cases, the storage medium may be incorporated into a computer system (such as system 1400). In other embodiments, the storage medium may be separate from the computer system (e.g., a removable medium, such as an optical disk), and / or provided in an installation package such that the storage medium can be used to program, configure, and / or condition a general purpose computer with the instructions / code stored thereon. These instructions may take the form of executable code executable by the computer system 1400, and / or may take the form of source code and / or installable code, which instructions (e.g., using any one of a variety of general purpose compilers, installers, compression / decompression utilities, etc.) then take the form of executable code when compiled and / or installed on the computer system 1400.

[0097] It will be apparent to those of ordinary skill in the art that substantial variations may be made in accordance with specific requirements. For example, customized hardware may also be used, and / or particular elements may be implemented in hardware, software (including portable software, such as applets), or a combination of both. Additionally, connections to other computing devices, such as network input / output devices, may be employed.

[0098] As mentioned above, on the one hand, some embodiments may employ a computer system (such as computer system 1400) to execute the methods according to the embodiments of the present invention. According to a set of embodiments, in response to a processor 1410 executing one or more sequences of one or more instructions included in a working memory 1435 (which may be incorporated into an operating system 1440 and / or other code such as an application 1445), the computer system 1400 executes some or all of the programs of such methods. Such instructions may be read into the working memory 1435 from another computer-readable medium (such as one or more of the storage devices 1425). By way of example only, the execution of a sequence of instructions included in the working memory 1435 may cause the processor 1410 to execute one or more programs of the methods described herein.

[0099] As used herein, the terms “machine-readable medium” and “computer-readable medium” refer to any medium that participates in providing data that causes a machine to operate in a particular fashion. In embodiments implemented using the computer system 1400, various computer-readable media may be involved in providing instructions / code for execution to the processor 1410 and / or may be used to store and / or carry such instructions / code (e.g., as a signal). In many implementations, the computer-readable medium is a physical and / or tangible storage medium. The medium may take many forms, including (but not limited to) non-volatile media, volatile media, and transmission media. Non-volatile media may include, for example, optical disks and / or magnetic disks, such as the storage devices 1425. Volatile media include, but are not limited to, dynamic memory (such as the working memory 1435). Transmission media include, but are not limited to, coaxial cables, copper wire, and fiber optics (which include the wires that make up the bus 1405) and the various components of the communication subsystem 1430 (and / or the medium through which the communication subsystem 1430 provides communication with other devices). Thus, the transmission media may also take the form of waves (including, but not limited to, radio waves, sound waves, and / or light waves, such as those generated during radio-wave and infrared data communications).

[0100] Common forms of physical and / or tangible computer-readable media include (e.g.) floppy disks, flexible disks, hard disks, magnetic tape, any other magnetic medium, CD-ROM, any other optical medium, any other physical medium with perforated patterns, RAM, PROM, EPROM, FLASH-EEPROM, any other memory chip or cartridge, a carrier wave as described below, or any other medium from which a computer can read instructions and / or code.

[0101] Various forms of computer-readable media may be involved in carrying one or more sequences of one or more instructions to the processor 1410 for execution. By way of example only, the instructions may initially be carried on a magnetic disk and / or optical disk of a remote computer. The remote computer may load the instructions into its dynamic memory and issue the instructions as a signal on a transmission medium for reception and / or execution by the computer system 1400. These signals, which may be in the form of electromagnetic signals, acoustic signals, optical signals, etc., are all examples of carrier waves on which the instructions may be encoded in accordance with various embodiments of the present invention.

[0102] The communication subsystem 1430 (and / or its components) will generally receive the signals, and the bus 1405 may then carry the signals (and / or the data, instructions, etc. carried by the signals) to the working memory 1435, from which the processor 1405 retrieves and executes the instructions. The instructions received by the working memory 1435 may optionally be stored on the storage device 1425 before and after being executed by the processor 1410.

[0103] Reference Figure 15 , shows a schematic diagram of a mobile device 1500 according to one embodiment. As Figure 1 shown in Figure 15 the UE 120 shown in the mobile device 1500 may include one or more features of the mobile device 1500 shown in. In some embodiments, the mobile device 1500 may include a wireless transceiver 1521 that is capable of transmitting and receiving wireless signals 1523 via a wireless antenna 1522 on a wireless communication network. The wireless transceiver 1521 may be connected to the bus 1501 by a wireless transceiver bus interface 1520. In some embodiments, the wireless transceiver bus interface 1520 may be at least partially integrated with the wireless transceiver 1521. Some embodiments may include multiple wireless transceivers 1521 and wireless antennas 1522 to implement transmission and / or reception of signals in full-duplex or half-duplex mode according to corresponding multiple wireless communication standards (such as, for example, by way of example only, versions of the IEEE standard 802.11, CDMA, WCDMA, LTE, UMTS, GSM, AMPS, Zigbee, Bluetooth®, and the 5G or NR radio interface defined by 3GPP). In a particular implementation, the wireless transceiver 1521 may receive and acquire a downlink signal including a terrestrial positioning signal (such as DL PRS). For example, the wireless transceiver 1521 may adequately process the acquired terrestrial positioning signal to enable detection of the timing of the acquired terrestrial positioning signal.

[0104] The mobile device 1500 may include an SPS receiver 1555 that is capable of receiving and acquiring an SPS signal 1559 via an SPS antenna 1552 (which may be the same as antenna 1522 in some embodiments). The SPS receiver 1555 may process all or part of the acquired SPS signal 1559 to estimate the location of the mobile device 1500. One or more general-purpose processors 1511, a memory 1540, one or more digital signal processors (DSPs) 1512, and / or a dedicated processor (not shown) may be utilized to process all or part of the acquired SPS signal and / or to compute an estimated location of the mobile device 1500 in conjunction with the SPS receiver 1555. Storage of the SPS, TPS, or other signals (e.g., signals acquired from the wireless transceiver 1521) or storage of measurements of these signals for performing positioning operations may be performed in the memory 1540 or a register (not shown). The general-purpose processor 1511, the memory 1540, the DSP 1512, and / or the dedicated processor may provide or support a positioning engine for processing the measurements to estimate the location of the mobile device 1500. For example, the general-purpose processor 1511 or the DSP 1512 may process the downlink signals acquired by the wireless transceiver 1521 to, for example, measure RSSI, RTT, AOA, TOA, RSTD, RSRQ, and / or RSRQ.

[0105] Figure 15 It is also shown that the DSP 1512 and the general-purpose processor 1511 may be connected to the memory 1540 via a bus 1501. A specific bus interface (not shown) may be integrated with the DSP 1512, the general-purpose processor 1511, and the memory 1540. In various embodiments, functions may be performed in response to the execution of one or more machine-readable instructions stored in the memory 1540 (such as, by way of example only, RAM, ROM, FLASH, or a disk drive) (such as a computer-readable storage medium). The one or more instructions may be executed by the general-purpose processor 1511, the dedicated processor, or the DSP 1512. The memory 1540 may include a non-transitory processor-readable memory and / or a computer-readable memory that stores software code (programming code, instructions, etc.) executable by the processor 1511 and / or the DSP 1512 to perform the functions described herein.

[0106] Figure 15Also shown is that the user interface 1535 can include any of several devices (such as, for example, by way of non-limiting examples, speakers, microphones, display devices, vibration devices, keyboards, touchscreens). In a particular embodiment, the user interface 1535 can enable a user to interact with one or more applications hosted on the mobile device 1500. For example, the devices of the user interface 1535 can store analog signals and / or digital signals on the memory 1540 for further processing by the DSP 1512 or the general-purpose processor 1511 in response to actions from the user. Similarly, applications hosted on the mobile device 1500 can store analog signals or digital signals on the memory 1540 to present output signals to the user. The mobile device 1500 can optionally include a dedicated audio input / output (I / O) device 1570, which includes, for example, dedicated speakers, microphones, digital-to-analog circuitry, analog-to-digital circuitry, amplifiers, and / or gain controls. This is merely an example of how audio I / O can be implemented in a mobile device, and the claimed subject matter is not limited in this regard. The mobile device 1500 can include a touch sensor 1562 that responds to touches or pressure on a keyboard or touchscreen device.

[0107] The mobile device 1500 can include a dedicated camera device 1564 for capturing still or moving images. The camera device 1564 can include, for example, by way of non-limiting examples, an imaging sensor (such as, for example, a charge-coupled device or a CMOS imager), a lens, analog-to-digital circuitry, and a frame buffer. Additional processing, conditioning, encoding, and / or compression of the signals representing the captured images can be performed at the general-purpose / application processor 1511 and / or the DSP 1512. A dedicated video processor 1562 can perform conditioning, encoding, compression, or manipulation of the signals representing the captured images. The video processor 1568 can decode / decompress the stored image data for presentation on a display device (not shown) of the mobile device 1500.

[0108] The mobile device 1500 can also include sensors 1560 coupled to the bus 1501, which can include, for example, inertial sensors and environmental sensors. The inertial sensors of the sensors 1560 can include, for example, an accelerometer (such as, for example, jointly responsive to the acceleration of the mobile device 1500 in three dimensions), one or more gyroscopes, or one or more magnetometers (such as, for example, to support one or more compass applications). The environmental sensors of the mobile device 1500 can include, for example, by way of non-limiting examples, a temperature sensor, an atmospheric pressure sensor, an ambient light sensor, a camera imager, a microphone. The sensors 1560 can generate analog signals and / or digital signals, which can be stored in the memory 1540 and processed by the DSP 1512 or the general-purpose application processor 1511 to support one or more applications (such as, for example, applications for positioning operations or navigation operations).

[0109] The mobile device 1500 may include a dedicated modem processor 1566 that can perform baseband processing of signals received and downconverted at the wireless transceiver 1521 or the SPS receiver 1555. The modem processor 1566 may perform baseband processing of signals to be upconverted by the wireless transceiver 1521 for transmission. In an alternative embodiment, instead of having a dedicated modem processor, the baseband processing may be performed by a general-purpose processor or a DSP (e.g., the general-purpose / application processor 1511 or the DSP 1512). These are merely examples of structures that may perform baseband processing, and the claimed subject matter is not limited in this regard.

[0110] Also refer to Figure 16, examples of the TRP 1600 of the BS 110a-c include a computing platform that includes a processor 1610, a memory 1611 that includes software (SW) 1612, a transceiver 1615, and (optionally) an SPS receiver 1617. The processor 1610, the memory 1611, the transceiver 1615, and the SPS receiver 1617 may be communicatively coupled to each other via a bus 1620 (which may be configured, for example, for optical and / or electrical communication). One or more of the illustrated devices (e.g., the wireless interface and / or the SPS receiver 1617) may be omitted from the TRP 1600. The SPS receiver 1617 may be configured similarly to the SPS receiver 1517 to be able to receive and acquire the SPS signal 1660 via the SPS antenna 1662. The processor 1610 may include one or more intelligent hardware devices, such as a central processing unit (CPU), a microcontroller, an application specific integrated circuit (ASIC), etc. The processor 1610 may include multiple processors (e.g., including a general-purpose / application processor, a DSP, a modem processor, a video processor, and / or a sensor processor as shown in FIG. 4). The memory 1611 is a non-transitory storage medium that may include a random access memory (RAM), a flash memory, an optical disc memory, and / or a read-only memory (ROM), etc. The memory 1611 stores software 1612, which may be processor-readable, processor-executable software code that includes instructions configured to cause the processor 1610 to perform the various functions described herein when executed. Alternatively, the software 1612 may not be directly executable by the processor 1610, but may be configured to cause the processor 1610 to perform functions, for example, when compiled and executed. The specification may only mention the processor 1610 performing functions, but this includes other embodiments, such as the processor 1610 executing software and / or firmware. The specification may abbreviate the execution of functions by one or more of the processors included in the processor 1610 as the processor 1610 performing functions. This description may refer to the TRP 1600 performing functions as a shorthand for one or more appropriate components of the TRP 1600 (and thus one of the BS 110a-c) performing the function. As a supplement or alternative to the memory 1611, the processor 1610 may include a memory with stored instructions. The functionality of the processor 1610 is discussed more fully below.

[0111] The transceiver 1615 may include a wireless transceiver 1640 and a wired transceiver 1650 that are respectively configured to communicate with other devices via a wireless connection and a wired connection. For example, the wireless transceiver 1640 may include a transmitter 1642 and a receiver 1644 coupled to one or more antennas 1646 for transmitting (e.g., on one or more uplink channels) and / or receiving (e.g., on one or more downlink channels) wireless signals 1648 and converting the signals from the wireless signals 1648 to wired (e.g., electrical and / or optical) signals and from wired (e.g., electrical and / or optical) signals to wireless signals 1648. Accordingly, the transmitter 1642 may include multiple transmitters that may be discrete components or combined / integrated components, and / or the receiver 1644 may include multiple receivers that may be discrete components or combined / integrated components. The wireless transceiver 1640 may be configured to transmit signals (e.g., communicate with the UE 1500, one or more UEs, and / or one or more other devices) according to various radio access technologies (RATs) such as: 5G New Radio (NR), GSM (Global System for Mobile Communications), UMTS (Universal Mobile Telecommunications System), AMPS (Advanced Mobile Phone System), CDMA (Code Division Multiple Access), WCDMA (Wideband CDMA), LTE (Long Term Evolution), LTE Direct (LTE-D), 3GPP LTE-V2X (PC5), IEEE 802.11 (including IEEE 802.11p), WiFi, WiFi Direct (WiFi-D), Bluetooth®, Zigbee, etc. The wired transceiver 1650 may include a transmitter 1652 and a receiver 1654 that are configured for wired communication with, for example, the network controller 130 to, for example, send communications to the network controller 130 and receive communications from the network controller. The transmitter 1652 may include multiple transmitters that may be discrete components or combined / integrated components, and / or the receiver 1654 may include multiple receivers that may be discrete components or combined / integrated components. The wired transceiver 1650 may be configured for, for example, optical communication and / or electrical communication.

[0112] Figure 16 The configuration of the TRP 1600 shown in [description] is an example and is not a limitation of the present invention including the claims, and other configurations may be used. For example, the description herein discusses the TRP 1600 being configured to perform several functions or the TRP performing several functions, but one or more of these functions may be performed by the computer 1400 and / or the UE 1500 (i.e., the UE 1500 may be configured to perform one or more of these functions).

[0113] The methods, systems, and devices discussed above are examples. Various configurations may omit, substitute, or add various processes or components as appropriate. For example, in alternative configurations, the methods may be performed in a different order than described, and / or various stages may be added, omitted, and / or combined. Additionally, features described with respect to certain configurations may be combined in various other configurations. Different aspects and elements of the configurations may be combined in a similar manner. Further, technology is evolving, and thus many of the elements are examples and do not limit the scope of the disclosure or the claims.

[0114] Specific details are given in the description to provide a thorough understanding of example configurations including the embodiments. However, the configurations may be practiced without these specific details. For example, well-known circuits, processes, algorithms, structures, and techniques have been shown without unnecessary detail to avoid obscuring the configurations. This description merely provides example configurations and does not limit the scope, utility, or configurations of the claims. Instead, the foregoing description of the configurations will provide those skilled in the art with a viable description for implementing the described techniques. Various changes may be made to the function and arrangement of the elements without departing from the spirit or scope of the disclosure.

[0115] Additionally, a configuration may be described as a program depicted as a schematic flowchart or block diagram. Although the operations may each be described as a sequential program, many of the operations may be performed in parallel or simultaneously. Additionally, the order of the operations may be rearranged. The process may have additional steps not included in the figures. Further, examples of the method may be implemented by hardware, software, firmware, middleware, microcode, a hardware description language, or any combination thereof. When implemented in software, firmware, middleware, or microcode, the program code or code segments for performing the necessary tasks may be stored in a non-transitory computer-readable medium such as a storage medium. The processor may perform the described tasks.

[0116] After several example configurations have been described, various modifications, alternative constructions, and equivalents may be used without departing from the spirit of the disclosure. For example, the above elements may be components of a larger system, where other rules may supersede or otherwise modify the application of the invention. Additionally, several steps may be performed before, during, or after considering the above elements. Accordingly, the above description does not limit the scope of the claims.

Claims

1. A method for wireless communication by a base station, comprising: Configuring a first positioning frequency layer for full-duplex operation; Configuring a second positioning frequency layer for half-duplex operation; Providing the first positioning frequency layer to a first mobile device; And Providing the second positioning frequency layer to a second mobile device.

2. The method according to claim 1, wherein The first positioning frequency layer and the second positioning frequency layer include one or more positioning reference signal resource sets, where each positioning reference signal resource set includes the same subcarrier spacing and cyclic prefix.

3. The method according to claim 1, wherein Configuring the first positioning frequency layer for full-duplex operation includes configuring a time slot class field to indicate full-duplex operation.

4. The method according to claim 1, wherein Configuring the second positioning frequency layer for half-duplex operation includes configuring a time slot class field to indicate half-duplex operation.

5. The method according to claim 1, wherein Providing the first positioning frequency layer to the first mobile device and providing the second positioning frequency layer to the second mobile device includes sending one or more radio resource control signals to the first mobile device and the second mobile device.

6. An apparatus for wireless communication, comprising: A memory; At least one transceiver; At least one processor, the at least one processor being communicatively coupled to the at least one transceiver and the memory, and configured to: Configure a first positioning frequency layer for full-duplex operation; Configure a second positioning frequency layer for half-duplex operation; Provide the first positioning frequency layer to a first mobile device; And Provide the second positioning frequency layer to a second mobile device.

7. The apparatus according to claim 6, wherein, The first positioning frequency layer and the second positioning frequency layer include one or more positioning reference signal resource sets, where each positioning reference signal resource set includes the same subcarrier spacing and cyclic prefix.

8. The apparatus according to claim 6, wherein The at least one processor is configured to configure a time slot class field to indicate full-duplex operation.

9. The device according to claim 6, wherein The at least one processor is configured to configure a time slot class field to indicate half-duplex operation.

10. The apparatus according to claim 6, wherein, The at least one transceiver is configured to send one or more radio resource control signals to the first mobile device and the second mobile device.

11. An apparatus for wireless communication by a base station, comprising components for performing the method according to any one of claims 1-5.

12. A non-transitory processor-readable storage medium, comprising processor-readable instructions configured to cause one or more processors to perform the method according to any one of claims 1-5.

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