WO2023206046A1 - Mécanisme de réception de faisceau unique à l'intérieur d'une fenêtre de traitement de signaux prs - Google Patents

Mécanisme de réception de faisceau unique à l'intérieur d'une fenêtre de traitement de signaux prs Download PDF

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Publication number
WO2023206046A1
WO2023206046A1 PCT/CN2022/089125 CN2022089125W WO2023206046A1 WO 2023206046 A1 WO2023206046 A1 WO 2023206046A1 CN 2022089125 W CN2022089125 W CN 2022089125W WO 2023206046 A1 WO2023206046 A1 WO 2023206046A1
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Prior art keywords
receiving filter
pdsch
reference signal
spatial receiving
spatial
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PCT/CN2022/089125
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English (en)
Inventor
Hyun-Su Cha
Ryan Keating
Tao Tao
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Nokia Shanghai Bell Co., Ltd.
Nokia Solutions And Networks Oy
Nokia Technologies Oy
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Application filed by Nokia Shanghai Bell Co., Ltd., Nokia Solutions And Networks Oy, Nokia Technologies Oy filed Critical Nokia Shanghai Bell Co., Ltd.
Priority to PCT/CN2022/089125 priority Critical patent/WO2023206046A1/fr
Publication of WO2023206046A1 publication Critical patent/WO2023206046A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services

Definitions

  • Embodiments of the present disclosure generally relate to communication techniques, and more particularly, to methods, devices and computer readable medium for single beam reception inside a positioning reference signal (PRS) processing window.
  • PRS positioning reference signal
  • the terminal devices may measure the reference signal time difference (RSTD) between positioning reference signals (PRSs) from different transmission points in order to perform positioning.
  • the terminal devices can measure a receiving-transmitting (Rx-Tx) time difference where the time difference is between two PRSs.
  • RSTD reference signal time difference
  • PRSs positioning reference signals
  • Rx-Tx receiving-transmitting time difference
  • embodiments of the present disclosure relate to a method for single beam reception inside a positioning reference signal (PRS) processing window and corresponding devices.
  • PRS positioning reference signal
  • a first device comprising at least one processor; and at least one memory including computer program codes; the at least one memory and the computer program codes are configured to, with the at least one processor, cause the first device to: obtain a positioning reference signal (PRS) processing window configuration; receive a physical downlink control channel (PDCCH) using a first spatial receiving filter ; and initiate receiving at least one of: a potential physical downlink shared channel (PDSCH) from the second device or a positioning reference signal from a core network device within the PRS processing window using a target spatial receiving filter, the target spatial receiving filter comprising one of: the first spatial receiving filter, a second spatial receiving filter configured for the positioning reference signal, or a third spatial receiving filter which is different from the first spatial receiving filter and the second spatial receiving filter.
  • PRS positioning reference signal
  • PDCCH physical downlink control channel
  • PDSCH physical downlink shared channel
  • a second device comprising at least one processor; and at least one memory including computer program codes; the at least one memory and the computer program codes are configured to, with the at least one processor, cause the second device to: transmit to a first device a configuration of a positioning reference signal (PRS) processing window; transmit to the first device a first indication of one or more reception modes for a positioning reference signal and a potential physical downlink shared channel (PDSCH) ; and transmit to the first device a physical downlink control channel (PDCCH) .
  • PRS positioning reference signal
  • PDSCH physical downlink shared channel
  • PDCCH physical downlink control channel
  • a core network device comprises at least one processor; and at least one memory including computer program codes; the at least one memory and the computer program codes are configured to, with the at least one processor, cause the core network device to: determine one or more reception modes for a positioning reference signal and a potential physical downlink shared channel (PDSCH) ; and transmit to the first device a first indication of the one or more reception modes.
  • PDSCH physical downlink shared channel
  • a method comprises obtaining, at a first device, a positioning reference signal (PRS) processing window configuration; receiving a physical downlink control channel (PDCCH) using a first spatial receiving filter ; and initiating receiving at least one of: a potential physical downlink shared channel (PDSCH) from the second device or a positioning reference signal from a core network device within the PRS processing window using a target spatial receiving filter, the target spatial receiving filter comprising one of: the first spatial receiving filter, a second spatial receiving filter configured for the positioning reference signal, or a third spatial receiving filter which is different from the first spatial receiving filter and the second spatial receiving filter.
  • PRS positioning reference signal
  • a method comprises transmitting, at a second device and to a first device a configuration of a positioning reference signal (PRS) processing window; transmitting to the first device a first indication of one or more reception modes for a positioning reference signal and a potential physical downlink shared channel (PDSCH) ; and transmitting to the first device a physical downlink control channel (PDCCH) .
  • PRS positioning reference signal
  • PDSCH potential physical downlink shared channel
  • PDCCH physical downlink control channel
  • the method comprise determining one or more reception modes for a positioning reference signal and a potential physical downlink shared channel (PDSCH) ; and transmitting to the first device a first indication of the one or more reception modes.
  • PDSCH physical downlink shared channel
  • an apparatus comprising means for obtaining, at a first device, a positioning reference signal (PRS) processing window configuration; means for receiving a physical downlink control channel (PDCCH) using a first spatial receiving filter; and means for initiating receiving at least one of: a potential physical downlink shared channel (PDSCH) from the second device or a positioning reference signal from a core network device within the PRS processing window using a target spatial receiving filter, the target spatial receiving filter comprising one of: the first spatial receiving filter, a second spatial receiving filter configured for the positioning reference signal, or a third spatial receiving filter which is different from the first spatial receiving filter and the second spatial receiving filter.
  • PRS positioning reference signal
  • an apparatus comprising means for transmitting, at a second device and to a first device a configuration of a positioning reference signal (PRS) processing window; means for transmitting to the first device a first indication of one or more reception modes for a positioning reference signal and a potential physical downlink shared channel (PDSCH) ; and means for transmitting to the first device a physical downlink control channel (PDCCH) .
  • PRS positioning reference signal
  • PDSCH potential physical downlink shared channel
  • PDCCH physical downlink control channel
  • an apparatus comprising means for determining one or more reception modes for a positioning reference signal and a potential physical downlink shared channel (PDSCH) ; and means for transmitting to the first device a first indication of the one or more reception modes.
  • PDSCH physical downlink shared channel
  • a computer readable medium comprising program instructions for causing an apparatus to perform at least the method according to the above fourth, fifth or sixth aspect.
  • Fig. 1 illustrates a schematic diagram of a communication system according to embodiments of the present disclosure
  • Fig. 2 illustrates a schematic diagram of interactions between devices according to embodiments of the present disclosure
  • Fig. 3 illustrates a schematic diagram of DL signals reception inside PRS processing window according to embodiments of the present disclosure
  • Fig. 4 illustrates a flow chart of a method implemented at a first device according to some embodiments of the present disclosure
  • Fig. 5 illustrates a flow chart of a method at a second device according to some embodiments of the present disclosure
  • Fig. 6 illustrates a flow chart of a method at a core network device according to some embodiments of the present disclosure
  • Fig. 7 illustrates a simplified block diagram of an apparatus that is suitable for implementing embodiments of the present disclosure.
  • Fig. 8 illustrates a block diagram of an example computer readable medium in accordance with some example embodiments of the present disclosure.
  • references in the present disclosure to “one embodiment, ” “an embodiment, ” “an example embodiment, ” and the like indicate that the embodiment described may include a particular feature, structure, or characteristic, but it is not necessary that every embodiment includes the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an example embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
  • first and second etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and similarly, a second element could be termed a first element, without departing from the scope of example embodiments.
  • the term “and/or” includes any and all combinations of one or more of the listed terms.
  • circuitry may refer to one or more or all of the following:
  • circuitry also covers an implementation of merely a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and/or firmware.
  • circuitry also covers, for example and if applicable to the particular claim element, a baseband integrated circuit or processor integrated circuit for a mobile device or a similar integrated circuit in server, a cellular network device, or other computing or network device.
  • the term “communication network” refers to a network following any suitable communication standards, such as Long Term Evolution (LTE) , LTE-Advanced (LTE-A) , Wideband Code Division Multiple Access (WCDMA) , High-Speed Packet Access (HSPA) , Narrow Band Internet of Things (NB-IoT) , New Radio (NR) and so on.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • WCDMA Wideband Code Division Multiple Access
  • HSPA High-Speed Packet Access
  • NB-IoT Narrow Band Internet of Things
  • NR New Radio
  • the communications between a terminal device and a network device in the communication network may be performed according to any suitable generation communication protocols, including, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the future fifth generation (5G) communication protocols, and/or any other protocols either currently known or to be developed in the future.
  • suitable generation communication protocols including, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the future fifth generation (5G) communication protocols, and/or any other protocols either currently known or to be developed in the future.
  • Embodiments of the present disclosure may be applied in various communication systems. Given the rapid development in communications, there will of course also be future type communication technologies and systems with which the present disclosure may be embodied. It should not be seen as limiting the scope of the present disclosure to only the a
  • the term “network device” refers to a node in a communication network via which a terminal device accesses the network and receives services therefrom.
  • the network device may refer to a base station (BS) or an access point (AP) , for example, a node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , a NR NB (also referred to as a gNB) , a Remote Radio Unit (RRU) , a radio header (RH) , a remote radio head (RRH) , a relay, a low power node such as a femto, a pico, and so forth, depending on the applied terminology and technology.
  • BS base station
  • AP access point
  • NodeB or NB node B
  • eNodeB or eNB evolved NodeB
  • NR NB also referred to as a gNB
  • RRU Remote Radio Unit
  • RH radio header
  • terminal device refers to any end device that may be capable of wireless communication.
  • a terminal device may also be referred to as a communication device, user equipment (UE) , a Subscriber Station (SS) , a Portable Subscriber Station, a Mobile Station (MS) , or an Access Terminal (AT) .
  • UE user equipment
  • SS Subscriber Station
  • MS Mobile Station
  • AT Access Terminal
  • the terminal device may include, but not limited to, a mobile phone, a cellular phone, a smart phone, voice over IP (VoIP) phones, wireless local loop phones, a tablet, a wearable terminal device, a personal digital assistant (PDA) , portable computers, desktop computer, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback appliances, vehicle-mounted wireless terminal devices, wireless endpoints, mobile stations, laptop-embedded equipment (LEE) , laptop-mounted equipment (LME) , USB dongles, smart devices, wireless customer-premises equipment (CPE) , an Internet of Things (loT) device, a watch or other wearable, a head-mounted display (HMD) , a vehicle, a drone, a medical device and applications (e.g., remote surgery) , an industrial device and applications (e.g., a robot and/or other wireless devices operating in an industrial and/or an automated processing chain contexts) , a consumer electronics device, a device operating on commercial and/
  • UE may indicate support of three priority states: State 1: PRS is higher priority than all physical downlink control channel (PDCCH) /physical downlink shared channel (PDSCH) /channel state information-reference signal (CSI-RS) ; State 2: PRS is lower priority than PDCCH and URLLC PDSCH and higher priority than other PDSCH/CSI-RS; State 3: PRS is lower priority than all PDCCH/PDSCH/CSI-RS.
  • the ultra-reliable low latency communication (URLLC) channel corresponding to a dynamically scheduled PDSCH whose PUCCH resource for carrying ACK/NAK may be marked as high-priority.
  • URLLC ultra-reliable low latency communication
  • the gNB may indicate low priority of PRS than other signals.
  • the UE can determine the reception beam to receive the DL signals indicated as high priority.
  • the potential PDSCH region means that the time duration from the last PDCCH symbol until the UE decodes DCI from this PDCCH.
  • the UE needs to receive and buffer the received signals for potential PDSCH region as the UE does not know if there is actual PDSCH data scheduled by the PDCCH.
  • the UE behavior on the Rx beam decision is unclear on the symbols/slots configured with PRS overlapped with potential PDSCH. This issue needs be addressed to unambiguously support the new features of the PRS processing window and priority indication.
  • a first device obtains a PRS processing window configuration.
  • the first device receives a PDCCH using a first spatial receiving filter.
  • the first device initiates receiving and buffering one or more of a potential PDSCH from the second device or a PRS within the PRS processing window using a target spatial receiving filter.
  • the target spatial receiving filter comprises one of: the first spatial receiving filter, a second spatial receiving filter configured for the PRS, or a third spatial receiving filter which is different from the first spatial receiving filter and the second spatial receiving filter.
  • Fig. 1 illustrates a schematic diagram of a communication system in which embodiments of the present disclosure can be implemented.
  • the communication system 100 which is a part of a communication network, comprises a first device 110-1, a first device 110-2, a first device 110-3, ..., and a first device 110-N, which can be collectively referred to as “first device (s) 110. ”
  • the communication system 100 further comprises a second device 120.
  • the communication system 100 also comprises a third device 130.
  • the third device 130 may be a location management function (LMF) .
  • the third device 130 may be a location server. It is to be understood that the number of devices shown in Fig. 1 is given for the purpose of illustration without suggesting any limitations.
  • LMF location management function
  • the communication system 100 may comprise any suitable number of devices and cells.
  • the first device 110 and the second device 120 can communicate data and control information to each other.
  • a link from the second device 120 to the first device 110 is referred to as a downlink (DL)
  • a link from the first device 110 to the second device 120 is referred to as an uplink (UL) .
  • Communications in the communication system 100 may be implemented according to any proper communication protocol (s) , comprising, but not limited to, cellular communication protocols of the first generation (1G) , the second generation (2G) , the third generation (3G) , the fourth generation (4G) and the fifth generation (5G) and on the like, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and/or any other protocols currently known or to be developed in the future.
  • s cellular communication protocols of the first generation (1G) , the second generation (2G) , the third generation (3G) , the fourth generation (4G) and the fifth generation (5G) and on the like, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and/or any other protocols currently known or to be developed in the future.
  • IEEE Institute for Electrical and Electronics Engineers
  • the communication may utilize any proper wireless communication technology, comprising but not limited to: Code Divided Multiple Address (CDMA) , Frequency Divided Multiple Address (FDMA) , Time Divided Multiple Address (TDMA) , Frequency Divided Duplexer (FDD) , Time Divided Duplexer (TDD) , Multiple-Input Multiple-Output (MIMO) , Orthogonal Frequency Divided Multiple Access (OFDMA) and/or any other technologies currently known or to be developed in the future.
  • CDMA Code Divided Multiple Address
  • FDMA Frequency Divided Multiple Address
  • TDMA Time Divided Multiple Address
  • FDD Frequency Divided Duplexer
  • TDD Time Divided Duplexer
  • MIMO Multiple-Input Multiple-Output
  • OFDMA Orthogonal Frequency Divided Multiple Access
  • Fig. 2 illustrates a signaling flow 200 according to example embodiments of the present disclosure. Only for the purpose of illustrations, the signaling flow 200 involves the first device 110-1 and the second device 120.
  • the first device 110-1 may be configured with a plurality of spatial receiving filters. In other words, the first device 110-1 may be configured with a plurality of receiving beams.
  • spatial filtering used herein can refer to a signaling processing technique for directional signal transmission or reception.
  • spatial receiving filter and “receiving beam” can be used interchangeable and refer to a direction for signal reception.
  • One spatial receiving filter may correspond to one quasi colocation (QCL) type-D source or QCL type-D source reference signal resource.
  • QCL quasi colocation
  • a specific SSB could be a QCL type-D source RS of a PRS resource.
  • the term “QCL” used herein can be defined as: two antenna ports are said to be quasi co-located if properties of the channel over which a symbol on one antenna port is conveyed can be inferred from the channel over which a symbol on the other antenna port is conveyed.
  • the second device 120 may configure a plurality of QCL type-D sources for the first device.
  • the first device 110-1 may determine the spatial receiving filter based on the corresponding QCL type-D sources.
  • the first device 110-1 may decide each spatial receiving filter based on each QCL type-D source.
  • the first device 110-1 may obtain PRS assistance data.
  • the core network device 130 may transmit 2010 the PRS assistance data to the first device 110-1.
  • the core network device 130 can be or comprise a location management function (LMF) .
  • LMF may be a separate unit from the core network device and LMF is in communication connection with the core network device.
  • the PRS assistance data may comprise parameters for the PRS.
  • the PRS assistance data may comprise a bandwidth of the PRS.
  • the PRS assistance data may comprise a periodicity of the PRS.
  • the PRS assistance data may comprise a density of subcarrier occupied in a given PRS symbol which is referred to as the comb size.
  • N symbols can be combined to cover all the subcarriers in the frequency domain.
  • Each base station can then transmit in different sets of subcarriers to avoid interference.
  • the PRS can be any reference signal used for positioning purpose.
  • the PRS may be synchronization signal and physical broadcast channel block (SSB) .
  • the PRS may be a channel state information reference signal (CSI-RS) .
  • the PRS may be a sidelink (SL) PRS.
  • the first device 110-1 obtains a PRS processing window configuration.
  • the PRS processing window configuration may be configured at the first device 110-1.
  • the second device 120 may transmit 2020 a PRS processing window configuration to the first device 110-1.
  • the PRS processing window configuration may comprise a start point of the PRS processing window and a length of the PRS processing window in time domain.
  • the PRS processing window configuration may comprise the start point of the PRS processing window and an end point of the PRS processing window in time domain.
  • the first device 110-1 may support Capability 2.
  • the first device 110-1 may indicate support of three priority states: State 1: PRS is higher priority than all physical downlink control channel (PDCCH) /physical downlink shared channel (PDSCH) /channel state information-reference signal (CSI-RS) ; State 2: PRS is lower priority than PDCCH and URLLC PDSCH and higher priority than other PDSCH/CSI-RS; State 3: PRS is lower priority than all PDCCH/PDSCH/CSI-RS.
  • prioritization rule may be applied to PRS symbols.
  • the second device 120 may configure the first device 110-1 with PRS priority state.
  • the second device 120 may indicate the PRS priority state.
  • priority state 2 may be indicated to the first device 110-1.
  • the second device 120 may transmit 2030 an indication (also referred to as “a first indication” ) of one or more reception modes to the first device 110-1 for the PRS and a potential PDSCH/potential PDSCH region.
  • the core network device 130 may transmit 2035 the indication of one or more reception modes to the first device 110-1 for the PRS and a potential PDSCH/potential PDSCH region.
  • potential PDSCH region used herein can refer to a certain time duration (N symbols) such that right after receiving PDCCH until the UE decodes this PDCCH. N symbols are required time to decode this PDCCH to see if there was actual PDSCH or not.
  • the term “potential PDSCH” used herein does not limit to an actual PDSCH and means that it is possible that the PDSCH is scheduled by a received PDCCH which has not been decoded.
  • the region 330 can refer to the potential PDSCH region within the PRS processing window 310.
  • the reception mode may indicate that the first device 110-1 receives the PRS and the potential PDSCH using the first spatial receiving filter.
  • the reception mode may indicate that the first device 110-1 receives the PRS and the potential PDSCH using the second spatial receiving filter.
  • the reception mode may indicate that the first device 110-1 receives the PRS and the potential PDSCH using the third spatial receiving filter. Examples of applying the reception mode are described later.
  • the second device 120 may transmit an indication of the third spatial receiving filter (also referred to as “a third indication” ) to the first device 110-1.
  • the core network device 130 may transmit an indication of the third spatial receiving filter (also referred to as “a fourth indication” ) to the first device 110-1.
  • the first device 110-1 may receive a configuration of the third spatial receiving filter from the second device 120 or the core network device 130.
  • the configuration of the third spatial receiving filter may comprise a quasi colocation (QCL) -D source associated with the third spatial receiving filter.
  • the core network device 130 can configure fallback QCL type-D information per each PRS resource and/or PRS resource set.
  • the core network device 130 may determine the fallback Rx beam/the third spatial receiving filter based on the location of the second device 120 (i.e., the serving gNB) , the location of a neighbor gNB and the location of the first device 110-1.
  • the core network device 130 may configure a specific reception beam index as the fallback reception beam (the third spatial receiving filter) if the core network device 130 has information on reception beam direction and/or width for a specific reception beam index.
  • This fallback reception beam (the third spatial receiving filter) may be used to buffer both potential PDSCH and PRS. It may the new LTE positioning protocol (LPP) message.
  • the PRS assistance data may comprise the fallback beam information. In this way, the first device can receive both PRS and the potential PDSCH.
  • the first device 110-1 may determine a target reception mode from the one or more reception modes. In this case, in some embodiments, the first device 110-1 may transmit 2037 an indication (also referred to as “a second indication” ) of the target transmission mode to the second device 120. Alternatively, the first device 110-1 may transmit 2039 the indication of the target transmission mode to the core network device 130.
  • the first device 110-1 may drop potential PDSCH and buffer PRS.
  • the first device 110-1 may transmit 2040 an indication (also referred to as “a fifth indication” ) that the first device 110-1 does not receive and buffer the potential PDSCH within the PRS processing window.
  • the first device 110-1 may inform the second device 120 that it would not try to buffer potential PDSCH inside of PRS processing window. That is to say, inside of PRS processing window, for a certain N2 time duration (e.g., a parameter such as timeDurationForQCL) from the last symbol of PDCCH where PRS is configured, the first device 110-1 is not expected to receive and buffer potential PDSCH data.
  • N2 time duration e.g., a parameter such as timeDurationForQCL
  • the first device 110-1 may not buffer potential PDSCH (the potential PDSCH region 330) inside the PRS processing window 310.
  • the second device 120 may not schedule any PDSCH data on these potential PDSCH symbols.
  • the second device 120 may transmit a response to the first device 110-1. This response may indicate the first device 110-1 to buffer the potential PDSCH even inside the PRS processing window.
  • the second device 120 transmits 2050 a PDCCH to the first device 110-1.
  • the first device 110-1 may receive the PDCCH within the PRS processing window.
  • the first device 110-1 may receive the PDCCH 320 within the PRS processing window 310.
  • the PDCCH may be not within the PRS processing window.
  • the PDCCH may be received just before the PRS processing window. Only as an example, a certain number of frames, subframes, symbols, or slots of the PDCCH may be outside the PRS processing window.
  • the first device 110-1 may receive the PDCCH 320 using the spatial receiving filter 350-1.
  • the spatial receiving filter 350-1 may correspond to a first QCL type-D resource.
  • the first device 110-1 initiates receiving and buffering at least one of the potential PDSCH from the second device 120 or the PRS from the core network device 130 within the PRS processing window using a target spatial receiving filter. Initiating receiving and buffering means that trying to receive and buffer and does not limit to actually receive and buffer. In other words, if the first device 110-1 initiates receiving and buffering the potential PDSCH and/or PRS, the first device 110-1 may actually receive the potential PDSCH and/or PRS or may attempt to receive the potential PDSCH and/or PRS. Alternatively or in addition, the first device 110-1 may receive and buffer or trying to receive and buffer the potential PDSCH and/or the PRS.
  • the target spatial receiving filter may comprise one of: the first spatial receiving filter, the second spatial receiving filter or the third spatial receiving filter.
  • the first spatial receiving filter may be the same as the second spatial filter.
  • the first spatial receiving filter and the second spatial filter may be different.
  • the second device 120 transmits 2060 the PRS to the first device 110-1.
  • the first device 110-1 may receive the PRS within the PRS processing window.
  • the second device 120 may transmit 2070 the PDSCH to the first device 110-1.
  • the first device 110-1 may receive the PDSCH within the PRS processing window.
  • the order of the transmission 2060 of the PRS and the transmission 2070 of the PDSCH shown in Fig. 2 is only an example.
  • the transmission 2060 of the PRS and the transmission 2070 of the PDSCH can be simultaneously.
  • the transmission 2060 of the PRS may be before or after the transmission 2070 of the PDSCH.
  • the first device 110-1 may decode the PDCCH. After the first device 110-1 has decoded the PDCCH which indicates if there is a scheduled PDSCH, the first device 110-1 may process the buffered symbols accordingly. In this case, the first device 110-1 may initiate reception both the PDSCH and the PRS using the target spatial receiving filter.
  • the reception mode may indicate that the first device 110-1 receives the PRS and the potential PDSCH using the first spatial receiving filter.
  • the first device 110-1 may receive the PRS and the potential PDSCH using the spatial receiving filter 350-1.
  • the first device 110-1 does not use spatial receiving filter/reception beam following the configured QCL type-D for the PRS but it uses the spatial receiving filter/reception beam used to receive the PDCCH in order to receive/buffer both potential PDSCH data and PRSs. That is, the first device 110-1 may follow the configured transmission configuration indicator (TCI) state in control resource set (CORESET) configuration providing QCL configuration/indication for the PDCCH on the these symbols.
  • TCI transmission configuration indicator
  • CORESET control resource set
  • the first device 110-1 may follow QCL type-D used to receive the PDCCH, configured in a CORESET, to receive the configured PRS resource and potential PDSCH. That is, the first device 110-1 ignores the configured QCL type-D of the PRS resource. In this situation, the first device 110-1 may decode the PDSCH and try to buffer/process the PRS with best effort using the first spatial receiving filter. The first device 110-1 may ignore or drop that the PRS was sent in the overlapped symbols depending on the measurement quality.
  • a parameter such as timeDurationForQCL
  • the reception mode may indicate that the first device 110-1 receives the PRS and the potential PDSCH using the second spatial receiving filter.
  • the first device 110-1 may receive the PRS and the potential PDSCH using the spatial receiving filter 350-2 which is configured for the PRS.
  • the first device 110-1 may try to buffer PDSCH with best effort by using the spatial receiving filter/reception beam which is the best for the PRS reception.
  • the first device 110-1 may always try to buffer potential PDSCH by using PRS reception beam inside of PRS processing window.
  • the first device 110-1 ignores QCL type-D used to receive the PDCCH, configured in a CORESET, to buffer potential PDSCH, and it follows the configured QCL type-D of PRS resources to receive the PRS resources. In this situation, the first device 110-1 may decode the PDSCH. The first device 110-1 may transmit, to the second device 120, an indication (also referred to as “a sixth indication” ) that the potential PDSCH is received using the second spatial receiving filter.
  • N2 time duration e.g., a parameter, such as timeDurationForQCL
  • the reception mode may indicate that the first device 110-1 receives the PRS and the potential PDSCH using the third spatial receiving filter.
  • the first device 110-1 may receive the PRS and the potential PDSCH using the spatial receiving filter 350-3. In this situation, the first device 110-1 may decode the PDSCH.
  • the first device 110-1 may transmit, to the second device 120, an indication (also referred to as “a seventh indication” ) that the potential PDSCH is received using the third spatial receiving filter.
  • the first device 110-1 may transmit an indication (also referred to as “an eighth indication” ) to the core network device 130 that the PRS measurement is made at least partially with a QCL assumption different from the second spatial receiving filter.
  • the first device 110-1 may be expected to be configured/indicated with PDSCH scheduling offset value (e.g., K0) that is always greater than the required time for decoding PDCCH scheduling the PDSCH.
  • the UE behavior is aligned with the intention/indication from gNB. Moreover, ambiguity of UE behavior impacting on system performance has be addressed.
  • Fig. 4 illustrates a flow chart of method 400 of the present disclosure.
  • the method 400 can be implemented at any suitable devices.
  • the method may be implemented at the first device 110-1.
  • the first device 110-1 may be configured with a plurality of spatial receiving filters. In other words, the first device 110-1 may be configured with a plurality of receiving beams.
  • spatial filtering used herein can refer to a signaling processing technique for directional signal transmission or reception.
  • spatial receiving filter and “receiving beam” can be used interchangeable and refer to a direction for signal reception.
  • One spatial receiving filter may correspond to one quasi colocation (QCL) type-D source.
  • QCL used herein can be defined as: two antenna ports are said to be quasi co-located if properties of the channel over which a symbol on one antenna port is conveyed can be inferred from the channel over which a symbol on the other antenna port is conveyed.
  • the second device 120 may configure a plurality of QCL type-D resources for the first device.
  • the first device 110-1 may determine the spatial receiving filter based on the corresponding QCL type-D sources. In other words, the first device 110-1 may decide each spatial receiving filter based on each QCL type-D source.
  • the first device 110-1 may obtain PRS assistance data.
  • the core first device 110-1 may receive the PRS assistance data from the network device 130.
  • the PRS assistance data may comprise parameters for the PRS.
  • the PRS assistance data may comprise a bandwidth of the PRS.
  • the PRS assistance data may comprise a periodicity of the PRS.
  • the PRS assistance data may comprise a density of subcarrier occupied in a given PRS symbol which is referred to as the comb size. For comb-N PRS, N symbols can be combined to cover all the subcarriers in the frequency domain. Each base station can then transmit in different sets of subcarriers to avoid interference.
  • the first device 110-1 obtains a PRS processing window configuration.
  • the first device 110-1 may receive the PRS processing window configuration from the first device 110-1.
  • the PRS processing window configuration may comprise a start point of the PRS processing window and a length of the PRS processing window in time domain.
  • the PRS processing window configuration may comprise the start point of the PRS processing window and an end point of the PRS processing window in time domain.
  • the first device 110-1 may support Capability 2.
  • the first device 110-1 may indicate support of three priority states: State 1: PRS is higher priority than all physical downlink control channel (PDCCH) /physical downlink shared channel (PDSCH) /channel state information-reference signal (CSI-RS) ; State 2: PRS is lower priority than PDCCH and URLLC PDSCH and higher priority than other PDSCH/CSI-RS; State 3: PRS is lower priority than all PDCCH/PDSCH/CSI-RS.
  • prioritization rule may be applied to PRS symbols.
  • the first device 110-1 may be configured with PRS priority state.
  • priority state 2 may be indicated to the first device 110-1.
  • the first device 110-1 may receive an indication (also referred to as “a first indication” ) of one or more reception modes from the second device 120 for the PRS and a potential PDSCH/potential PDSCH region.
  • the first device 110-1 may receive the indication of one or more reception modes from the core network device 130 for the PRS and a potential PDSCH/potential PDSCH region.
  • the first indication indicates a reception mode. That is, said indication may indicate the first device 110-1 to use said indicated reception mode (i.e. only one reception mode) . In this case, the first device 110-1 may select to use said indicated reception mode.
  • the first indication indicates two or more reception modes. In this case, for example, the first device 110-1 may select one of the indicated reception modes to use. For example, if first mode and second mode are indicated, the first device 110-1 would select one of the first mode or the second mode.
  • the reception mode may indicate that the first device 110-1 receives the PRS and the potential PDSCH using the first spatial receiving filter.
  • the reception mode may indicate that the first device 110-1 receives the PRS and the potential PDSCH using the second spatial receiving filter.
  • the reception mode may indicate that the first device 110-1 receives the PRS and the potential PDSCH using the third spatial receiving filter. Examples of applying the reception mode are described later.
  • the first device 110-1 may receive an indication of the third spatial receiving filter (also referred to as “a third indication” ) from the second device 120.
  • the first device 110-1 may receive an indication of the third spatial receiving filter (also referred to as “a fourth indication” ) from the core network device 130.
  • the first device 110-1 may receive a configuration of the third spatial receiving filter from the second device 120 or the core network device 130.
  • the configuration of the third spatial receiving filter may comprise a quasi colocation (QCL) -D source associated with the third spatial receiving filter.
  • the first device 110-1 may determine a target reception mode from the one or more reception modes. In this case, in some embodiments, the first device 110-1 may transmit an indication (also referred to as “a second indication” ) of the target transmission mode to the second device 120. Alternatively, the first device 110-1 may transmit the indication of the target transmission mode to the core network device 130.
  • the first device 110-1 may drop potential PDSCH and buffer PRS.
  • the first device 110-1 may transmit an indication (also referred to as “a fifth indication” ) that the first device 110-1 does not receive and buffer the potential PDSCH within the PRS processing window.
  • the first device 110-1 may inform the second device 120 that it would not try to buffer potential PDSCH inside of PRS processing window. That is to say, inside of PRS processing window, for a certain N2 time duration (e.g., a parameter such as timeDurationForQCL) from the last symbol of PDCCH where PRS is configured, the first device 110-1 is not expected to buffer potential PDSCH data.
  • N2 time duration e.g., a parameter such as timeDurationForQCL
  • the second device 120 may not schedule any PDSCH data on these potential PDSCH symbols.
  • the second device 120 may transmit a response to the first device 110-1. This response may indicate the first device 110-1 to buffer the potential PDSCH even inside the PRS processing window.
  • the first device 110-1 may receive a PDCCH from the second device 120.
  • the first device 110-1 may receive the PDCCH within the PRS processing window.
  • the PDCCH may be not within the PRS processing window.
  • the PDCCH may be received just before the PRS processing window. Only as an example, a certain number of frames, subframes or slots of the PDCCH may be outside the PRS processing window.
  • the spatial receiving filter 350-1 may correspond to a first QCL type-D source.
  • the first device 110-1 initiates receiving and buffering at least one of the potential PDSCH from the second device 120 or the PRS from the core network device 130 within the PRS processing window using a target spatial receiving filter. Initiating receiving and buffering means that trying to receive and buffer and does not limit to actually receive and buffer. In other words, if the first device 110-1 initiates receiving and buffering the PDSCH and/or PRS, the first device 110-1 may actually receive the PDSCH and/or PRS or may attempt to receive the PDSCH and/or PRS. Alternatively or in addition, the first device 110-1 may receive and buffer or trying to receive and buffer the potential PDSCH and/or the PRS.
  • the target spatial receiving filter may comprise one of: the first spatial receiving filter, the second spatial receiving filter or the third spatial receiving filter.
  • the first spatial receiving filter may be the same as the second spatial filter.
  • the first spatial receiving filter and the second spatial filter may be different.
  • the first device 110-1 may receive the PRS within the PRS processing window. In some embodiments, the first device 110-1 may receive the PDSCH within the PRS processing window.
  • the first device 110-1 may decode the PDCCH. After the first device 110-1 has decoded the PDCCH which indicates if there is a scheduled PDSCH, the first device 110-1 may process the buffered symbols accordingly. In this case, the first device 110-1 may initiate reception both the PDSCH and the PRS using the target spatial receiving filter.
  • the reception mode may indicate that the first device 110-1 receives the PRS and the potential PDSCH using the first spatial receiving filter.
  • the first device 110-1 does not use spatial receiving filter/reception beam following the configured QCL type-D for the PRS but it uses the spatial receiving filter/reception beam used to receive the PDCCH in order to receive/buffer both potential PDSCH data and PRSs. That is, the first device 110-1 may follow the configured transmission configuration indicator (TCI) state in control resource set (CORESET) configuration providing QCL type-D configuration/indication for the PDCCH on the these symbols.
  • TCI transmission configuration indicator
  • CORESET control resource set
  • the first device 110-1 may follow QCL type-D used to receive the PDCCH, configured in a CORESET, to receive the configured PRS resource and potential PDSCH. That is, the first device 110-1 ignores the configured QCL type-D of the PRS resource. In this situation, the first device 110-1 may decode the PDSCH and try to buffer/process the PRS with best effort using the first spatial receiving filter. The first device 110-1 may ignore or drop that the PRS was sent in the overlapped symbols depending on the measurement quality.
  • a parameter such as timeDurationForQCL
  • the reception mode may indicate that the first device 110-1 receives the PRS and the potential PDSCH using the second spatial receiving filter.
  • the first device 110-1 may try to buffer the potential PDSCH with best effort by using the spatial receiving filter/reception beam which is the best for the PRS reception.
  • the first device 110-1 may always try to buffer potential PDSCH by using PRS reception beam inside of PRS processing window.
  • the first device 110-1 ignores QCL type-D used to receive the PDCCH, configured in a CORESET, to buffer potential PDSCH, and it follows the configured QCL type-D of PRS resources to receive the PRS resources. In this situation, the first device 110-1 may decode the PDSCH. The first device 110-1 may transmit, to the second device 120, an indication (also referred to as “a sixth indication” ) that the PDSCH is received using the second spatial receiving filter.
  • N2 time duration e.g., a parameter, such as timeDurationForQCL
  • the reception mode may indicate that the first device 110-1 receives the PRS and the potential PDSCH using the third spatial receiving filter.
  • the first device 110-1 may decode the PDSCH.
  • the first device 110-1 may transmit, to the second device 120, an indication (also referred to as “a seventh indication” ) that the PDSCH is received using the third spatial receiving filter.
  • the first device 110-1 may transmit an indication (also referred to as “an eighth indication” ) to the core network device 130 that the PRS measurement is made at least partially with a QCL type-D assumption different from the second spatial receiving filter.
  • the first device 110-1 may be expected to be configured/indicated with PDSCH scheduling offset value (e.g., K0) that is always greater than the required time for decoding PDCCH scheduling the PDSCH.
  • Fig. 5 illustrates a flow chart of method 500 of the present disclosure.
  • the method 500 can be implemented at any suitable devices.
  • the method may be implemented at the second device 120.
  • the second device 120 transmits a PRS processing window configuration to the first device 110-1.
  • the PRS processing window configuration may comprise a start point of the PRS processing window and a length of the PRS processing window in time domain.
  • the PRS processing window configuration may comprise the start point of the PRS processing window and an end point of the PRS processing window in time domain.
  • the second device 120 may configure the first device 110-1 with PRS priority state.
  • the second device 120 may indicate the PRS priority state.
  • priority state 2 may be indicated to the first device 110-1.
  • the second device 120 transmits an indication (also referred to as “afirst indication” ) of one or more reception modes to the first device 110-1 for the PRS and a potential PDSCH/potential PDSCH region.
  • the reception mode may indicate that the first device 110-1 receives the PRS and the potential PDSCH using the first spatial receiving filter.
  • the reception mode may indicate that the first device 110-1 receives the PRS and the potential PDSCH using the second spatial receiving filter.
  • the reception mode may indicate that the first device 110-1 receives the PRS and the potential PDSCH using the third spatial receiving filter. Examples of applying the reception mode are described later.
  • the second device 120 may transmit an indication of the third spatial receiving filter (also referred to as “a third indication” ) to the first device 110-1.
  • the second device 120 may transmit a configuration of the third spatial receiving filter to the first device 110-1.
  • the configuration of the third spatial receiving filter may comprise a quasi colocation (QCL) -D source associated with the third spatial receiving filter.
  • the first device 110-1 may drop potential PDSCH and buffer PRS.
  • the second device 120 may receive an indication (also referred to as “a fifth indication” ) that the first device 110-1 does not receive and buffer the potential PDSCH within the PRS processing window.
  • the first device 110-1 may inform the second device 120 that it would not try to buffer potential PDSCH inside of PRS processing window. That is to say, inside of PRS processing window, for a certain N2 time duration (e.g., a parameter such as timeDurationForQCL) from the last symbol of PDCCH where PRS is configured, the first device 110-1 is not expected to buffer potential PDSCH data.
  • N2 time duration e.g., a parameter such as timeDurationForQCL
  • the first device 110-1 may not buffer potential PDSCH (the potential PDSCH region 330) inside the PRS processing window 310.
  • the second device 120 may not schedule any PDSCH data on these potential PDSCH symbols.
  • the second device 120 may transmit a response to the first device 110-1. This response may indicate the first device 110-1 to buffer the potential PDSCH even inside the PRS processing window.
  • the second device 120 transmits a PDCCH to the first device 110-1.
  • the second device 120 may transmit the PDCCH within the PRS processing window.
  • the PDCCH may be not within the PRS processing window.
  • the PDCCH may be received just before the PRS processing window. Only as an example, a certain number of frames, subframes or slots of the PDCCH may be outside the PRS processing window.
  • the target spatial receiving filter may comprise one of: the first spatial receiving filter, the second spatial receiving filter or the third spatial receiving filter.
  • the first spatial receiving filter may be the same as the second spatial filter.
  • the first spatial receiving filter and the second spatial filter may be different.
  • the second device 120 transmits the PDSCH to the first device 110-1.
  • the first device 110-1 may receive the PDSCH within the PRS processing window.
  • the second device 120 may receive, from the first device 110-1, an indication (also referred to as “a sixth indication” ) that the PDSCH is received using the second spatial receiving filter. In other embodiments, the second device 120 may receive, from the first device 110-1, an indication (also referred to as “a seventh indication” ) that the PDSCH is received using the third spatial receiving filter.
  • Fig. 6 illustrates a flow chart of method 600 of the present disclosure.
  • the method 600 can be implemented at any suitable devices.
  • the method may be implemented at the core network device 130.
  • the core network device 130 may transmit the PRS assistance data to the first device 110-1.
  • the core network device 130 can be or comprise a location management function (LMF) .
  • LMF location management function
  • LMF may be a separate unit from the core network device and LMF is in communication connection with the core network device.
  • the PRS assistance data may comprise parameters for the PRS.
  • the PRS assistance data may comprise a bandwidth of the PRS.
  • the PRS assistance data may comprise a periodicity of the PRS.
  • the PRS assistance data may comprise a density of subcarrier occupied in a given PRS symbol which is referred to as the comb size. For comb-N PRS, N symbols can be combined to cover all the subcarriers in the frequency domain. Each base station can then transmit in different sets of subcarriers to avoid interference.
  • the core network device 130 determines one or more reception modes to the first device 110-1 for the PRS and a potential PDSCH/potential PDSCH region.
  • the reception mode may indicate that the first device 110-1 receives the PRS and the potential PDSCH using the first spatial receiving filter.
  • the reception mode may indicate that the first device 110-1 receives the PRS and the potential PDSCH using the second spatial receiving filter.
  • the reception mode may indicate that the first device 110-1 receives the PRS and the potential PDSCH using the third spatial receiving filter.
  • the core network device 130 may transmit the indication of one or more reception modes to the first device 110-1 for the PRS and a potential PDSCH/potential PDSCH region.
  • the core network device 130 may determine a third spatial receiving filter. In some embodiments, the core network device 130 can configure fallback QCL type-D information per each PRS resource and/or PRS resource set. The core network device 130 may determine the fallback Rx beam/the third spatial receiving filter based on the location of the second device 120 (i.e., the serving gNB) , the location of a neighbor gNB and the location of the first device 110-1.
  • the core network device 130 may configure a specific reception beam index as the fallback reception beam (the third spatial receiving filter) if the core network device 130 has information on reception beam direction and/or width for a specific reception beam index.
  • This fallback reception beam (the third spatial receiving filter) may be used to buffer both potential PDSCH and PRS. It may the new LTE positioning protocol (LPP) message.
  • the PRS assistance data may comprise the fallback beam information. In this way, the first device can receive both PRS and the potential PDSCH.
  • the core network device 130 may transmit an indication of the third spatial receiving filter (also referred to as “a fourth indication” ) to the first device 110-1. In some embodiments, the core network device 130 may transmit a configuration of the third spatial receiving filter to the first device 110-1. In some embodiments, the configuration of the third spatial receiving filter may comprise a quasi colocation (QCL) -D source associated with the third spatial receiving filter.
  • QCL quasi colocation
  • the core network device 130 may receive an indication (also referred to as “a second indication” ) of a target transmission mode from the first device 110-1.
  • the target transmission mode may be determined by the first device 110-1.
  • the core network device 130 may transmit the PRS to the first device 110-1.
  • the first device 110-1 may receive the PRS within the PRS processing window.
  • the second device 120 may transmit 2060 the PDSCH to the first device 110-1. In this case, the first device 110-1 may receive the PDSCH within the PRS processing window.
  • the core network device 130 may receive an indication (also referred to as “an eighth indication” ) from the first device 110-1 that the PRS measurement is made at least partially with a QCL assumption different from the second spatial receiving filter.
  • a first apparatus for performing the method 400 may comprise respective means for performing the corresponding steps in the method 400.
  • These means may be implemented in any suitable manners. For example, it can be implemented by circuitry or software modules.
  • the first apparatus comprises means for obtaining a positioning reference signal (PRS) processing window configuration; means for receiving a physical downlink control channel (PDCCH) using a first spatial receiving filter; and means for initiating receiving at least one of: a potential physical downlink shared channel (PDSCH) from the second device or a positioning reference signal within the PRS processing window using a target spatial receiving filter, the target spatial receiving filter comprising one of: the first spatial receiving filter, a second spatial receiving filter configured for the positioning reference signal, or a third spatial receiving filter which is different from the first spatial receiving filter and the second spatial receiving filter.
  • PRS positioning reference signal
  • PDCCH physical downlink control channel
  • PDSCH physical downlink shared channel
  • the first apparatus comprises means for receiving from the second device or a core network device a first indication of one or more reception modes for the positioning reference signal and the potential PDSCH.
  • the first apparatus comprises means for determining a target reception mode from the one or more reception modes; and means for transmitting to the second device or a core network device a second indication of the target reception mode for the positioning reference signal and the PDSCH.
  • the reception mode comprises one of: receiving the positioning reference signal and the potential PDSCH using the first spatial receiving filter, receiving the positioning reference signal and the potential PDSCH using the second spatial receiving filter, or receiving the positioning reference signal and the potential PDSCH using the third spatial receiving filter.
  • the first apparatus comprises means for receiving a third indication of the third spatial receiving filter from the second device.
  • the first apparatus comprises means for receiving a fourth indication of the third spatial receiving filter from a core network device.
  • the first apparatus comprises means for transmitting to the second device a fifth indication that the first device does not receive the potential PDSCH within the PRS processing window.
  • the means for receiving from the second device at least one of the potential PDSCH or the positioning reference signal comprises: means for receiving the positioning reference signal and the potential PDSCH using the first spatial receiving filter.
  • the first apparatus comprises means for in accordance with a determination that the PDCCH schedules a PDSCH, decoding the PDSCH; and means for determining whether to drop the PRS measurement in an overlapped symbol based on a measurement quality.
  • the first apparatus comprises means for receiving from the second device at least one of the potential PDSCH or the positioning reference signal comprises: means for receiving the positioning reference signal and the potential PDSCH using the second spatial receiving filter. In some embodiments, the first apparatus comprises means for in accordance with a determination that the PDCCH schedules a PDSCH, decoding the PDSCH; and transmitting to the second device a sixth indication that the PDSCH is received using the second spatial receiving filter.
  • the means for receiving from the second device at least one of the potential PDSCH or the positioning reference signal comprises means for receiving the positioning reference signal and the potential PDSCH using the third spatial receiving filter.
  • the first apparatus comprises means for in accordance with a determination that the PDCCH schedules a PDSCH, decoding the PDSCH; and means for transmitting to the second device a seventh indication that the PDSCH is received using the third spatial receiving filter.
  • the first apparatus comprises means for transmitting to a core network device an eighth indication that a reference measurement is made at least partially with a quasi colocation (QCL) type-D assumption different from the second spatial receiving filter.
  • QCL quasi colocation
  • the first apparatus comprises means for receiving the PDCCH within the PRS processing window.
  • the first apparatus comprises means for determining the first spatial receiving filter based on a first quasi colocation (QCL) type-D source reference signal; determining the second spatial receiving filter based on a second QCL type-D source reference signal; or determining the third spatial receiving filter based on a third QCL type-D source reference signal.
  • QCL quasi colocation
  • a second apparatus for performing the method 500 may comprise respective means for performing the corresponding steps in the method 500.
  • These means may be implemented in any suitable manners. For example, it can be implemented by circuitry or software modules.
  • the second apparatus comprises means for transmitting to a first device a configuration of a positioning reference signal (PRS) processing window; transmitting to the first device a first indication of one or more reception modes for a positioning reference signal and a potential physical downlink shared channel (PDSCH) ; and transmitting to the first device a physical downlink control channel (PDCCH) .
  • PRS positioning reference signal
  • PDSCH potential physical downlink shared channel
  • PDCCH physical downlink control channel
  • the reception mode comprises one of: receiving the positioning reference signal and the potential PDSCH using a first spatial receiving filter for the PDCCH based on a first quasi colocation (QCL) type-D source reference signal, receiving the positioning reference signal and the potential PDSCH using a second spatial receiving filter for the PDSCH based on a second QCL type-D source reference signal, or receiving the positioning reference signal and the potential PDSCH using a third spatial receiving filter which is different from the first spatial receiving filter and the second spatial receiving filter based on a third QCL type-D source reference signal.
  • QCL quasi colocation
  • the second apparatus comprises means for transmitting a second indication of a target reception mode for the positioning reference signal and the potential PDSCH.
  • the second apparatus comprises means for transmitting to the first device a third indication of the third spatial receiving filter.
  • the second apparatus comprises means for receiving from the first device one of: an indication that the first device uses a second spatial receiving filter before receiving the potential PDSCH, or an indication that the first device uses a third spatial receiving filter before receiving the potential PDSCH.
  • the second apparatus comprises means for receiving from the first device an indication that the first device does not receive the potential PDSCH within the PRS processing window; and refraining from transmitting the PDSCH to the first device within the PRS processing window.
  • the first device comprises a terminal device and the second device comprises a network device.
  • a third apparatus for performing the method 600 may comprise respective means for performing the corresponding steps in the method 600.
  • These means may be implemented in any suitable manners. For example, it can be implemented by circuitry or software modules.
  • the third apparatus comprises means for determining one or more reception modes for a positioning reference signal and a potential physical downlink shared channel (PDSCH) ; and transmitting to the first device a first indication of the one or more reception modes.
  • PDSCH physical downlink shared channel
  • the third apparatus comprises means for determining a third spatial receiving filter which is different from a first spatial receiving filter for the potential PDSCH) and/or a second spatial receiving filter configured for a positioning reference signal resource; and transmitting to a first device an indication about the third spatial receiving filter.
  • the means for determining the third spatial receiving filter comprises: means for determining the third spatial receiving filter based on a location of a second device which serves the first device, a location of neighbor network device and a location of the first device.
  • the means for determining the third spatial receiving filter comprises: means for determining a candidate spatial receiving filter to be the third spatial receiving filter based on at least one of: a direction of the candidate spatial receiving filter or a width of the candidate spatial receiving filter.
  • the reception mode comprises one of: receiving the positioning reference signal and the potential PDSCH using a first spatial receiving filter for the PDCCH based on a first quasi colocation (QCL) type-D source reference signal, receiving the positioning reference signal and the potential PDSCH using a second spatial receiving filter for the PDSCH based on a second QCL type-D source reference signal, or receiving the positioning reference signal and the potential PDSCH using a third spatial receiving filter which is different from the first spatial receiving filter and the second spatial receiving filter based on a third QCL type-D source reference signal.
  • QCL quasi colocation
  • the first device comprises a terminal device and the core network device comprises a location management function.
  • Fig. 7 is a simplified block diagram of a device 700 that is suitable for implementing embodiments of the present disclosure.
  • the device 700 may be provided to implement the communication device, for example the first device 110, or the second device 120, or the core network device 130 as shown in Fig. 1.
  • the device 700 includes one or more processors 710, one or more memories 720 coupled to the processor 710, and one or more communication modules 740 coupled to the processor 710.
  • the communication module 740 is for bidirectional communications.
  • the communication module 740 has at least one antenna to facilitate communication.
  • the communication interface may represent any interface that is necessary for communication with other network elements.
  • the processor 710 may be of any type suitable to the local technical network and may include one or more of the following: general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples.
  • the device 700 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
  • the memory 720 may include one or more non-volatile memories and one or more volatile memories.
  • the non-volatile memories include, but are not limited to, a Read Only Memory (ROM) 724, an electrically programmable read only memory (EPROM) , a flash memory, a hard disk, a compact disc (CD) , a digital video disk (DVD) , and other magnetic storage and/or optical storage.
  • the volatile memories include, but are not limited to, a random access memory (RAM) 722 and other volatile memories that will not last in the power-down duration.
  • a computer program 730 includes computer executable instructions that are executed by the associated processor 710.
  • the program 730 may be stored in the ROM 724.
  • the processor 710 may perform any suitable actions and processing by loading the program 730 into the RAM 722.
  • the embodiments of the present disclosure may be implemented by means of the program 720 so that the device 700 may perform any process of the disclosure as discussed with reference to Figs. 2 and 6.
  • the embodiments of the present disclosure may also be implemented by hardware or by a combination of software and hardware.
  • the program 730 may be tangibly contained in a computer readable medium which may be included in the device 700 (such as in the memory 720) or other storage devices that are accessible by the device 700.
  • the device 700 may load the program 730 from the computer readable medium to the RAM 722 for execution.
  • the computer readable medium may include any types of tangible non-volatile storage, such as ROM, EPROM, a flash memory, a hard disk, CD, DVD, and the like.
  • Fig. 8 shows an example of the computer readable medium 800 in form of CD or DVD.
  • the computer readable medium has the program 730 stored thereon.
  • various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representations, it is to be understood that the block, apparatus, system, technique or method described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
  • the present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer readable storage medium.
  • the computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target real or virtual processor, to carry out the methods as described above with reference to Figs. 2-6.
  • program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types.
  • the functionality of the program modules may be combined or split between program modules as desired in various embodiments.
  • Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
  • Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowcharts and/or block diagrams to be implemented.
  • the program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
  • the computer program codes or related data may be carried by any suitable carrier to enable the device, apparatus or processor to perform various processes and operations as described above.
  • Examples of the carrier include a signal, computer readable medium, and the like.
  • the computer readable medium may be a computer readable signal medium or a computer readable storage medium.
  • a computer readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of the computer readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM) , a read-only memory (ROM) , an erasable programmable read-only memory (EPROM or Flash memory) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La divulgation concerne un mécanisme de réception de faisceau unique à l'intérieur d'une fenêtre de traitement de signal de référence de positionnement (PRS). Selon certains modes de réalisation de la présente divulgation, un premier dispositif obtient une configuration de fenêtre de traitement de signal PRS. Le premier dispositif reçoit un canal PDCCH à l'aide d'un premier filtre de réception spatial. Le premier dispositif initie la réception et la mise en mémoire tampon d'un ou de plusieurs d'un canal PDSCH potentiel provenant du second dispositif ou d'un signal PRS provenant d'un dispositif de réseau central à l'intérieur de la fenêtre de traitement de signaux PRS à l'aide d'un filtre de réception spatial cible. Le filtre de réception spatial cible comprend l'un des filtres suivants : le premier filtre de réception spatial, un deuxième filtre de réception spatial configuré pour le signal PRS, ou un troisième filtre de réception spatial qui est différent du premier filtre de réception spatial et du deuxième filtre de réception spatial. De cette manière, le comportement de l'UE est aligné avec l'intention du dispositif de réseau et l'ambiguïté du comportement de l'UE est résolue.
PCT/CN2022/089125 2022-04-25 2022-04-25 Mécanisme de réception de faisceau unique à l'intérieur d'une fenêtre de traitement de signaux prs WO2023206046A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113826414A (zh) * 2019-05-21 2021-12-21 高通股份有限公司 对关于探测参考信号(srs)定时调整的信息的报告
CN113841447A (zh) * 2019-05-20 2021-12-24 高通股份有限公司 当来自相邻小区的路径损耗或空间发送准共置（qcl）参考无法用于定位的探测参考信号（srs）时的回退过程
US20220057474A1 (en) * 2020-08-21 2022-02-24 Qualcomm Incorporated Positioning reference signal (prs) measurement window adaptation
CN114258656A (zh) * 2019-08-15 2022-03-29 高通股份有限公司 用于定位参考信号打孔目的的对相邻发送接收点的时间频率同步信号块(ssb)的位置的指示

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113841447A (zh) * 2019-05-20 2021-12-24 高通股份有限公司 当来自相邻小区的路径损耗或空间发送准共置（qcl）参考无法用于定位的探测参考信号（srs）时的回退过程
CN113826414A (zh) * 2019-05-21 2021-12-21 高通股份有限公司 对关于探测参考信号(srs)定时调整的信息的报告
CN114258656A (zh) * 2019-08-15 2022-03-29 高通股份有限公司 用于定位参考信号打孔目的的对相邻发送接收点的时间频率同步信号块(ssb)的位置的指示
US20220057474A1 (en) * 2020-08-21 2022-02-24 Qualcomm Incorporated Positioning reference signal (prs) measurement window adaptation

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