WO2022147818A1 - Systèmes et procédés de détermination d'informations de quasi-localisation d'après un signal de référence - Google Patents

Systèmes et procédés de détermination d'informations de quasi-localisation d'après un signal de référence Download PDF

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Publication number
WO2022147818A1
WO2022147818A1 PCT/CN2021/071028 CN2021071028W WO2022147818A1 WO 2022147818 A1 WO2022147818 A1 WO 2022147818A1 CN 2021071028 W CN2021071028 W CN 2021071028W WO 2022147818 A1 WO2022147818 A1 WO 2022147818A1
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WIPO (PCT)
Prior art keywords
qcl
srs
information
signal
wireless communication
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PCT/CN2021/071028
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English (en)
Inventor
Zhen He
Bo Gao
Shujuan Zhang
Ke YAO
Chuangxin JIANG
Zhaohua Lu
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Zte Corporation
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Priority to PCT/CN2021/071028 priority Critical patent/WO2022147818A1/fr
Priority to CN202180089949.1A priority patent/CN116762392A/zh
Publication of WO2022147818A1 publication Critical patent/WO2022147818A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver

Definitions

  • the disclosure relates generally to wireless communications, including but not limited to systems and methods for determining quasi-co-location (QCL) information based on reference signal.
  • QCL quasi-co-location
  • the standardization organization Third Generation Partnership Project (3GPP) is currently in the process of specifying a new Radio Interface called 5G New Radio (5G NR) as well as a Next Generation Packet Core Network (NG-CN or NGC) .
  • the 5G NR will have three main components: a 5G Access Network (5G-AN) , a 5G Core Network (5GC) , and a User Equipment (UE) .
  • 5G-AN 5G Access Network
  • 5GC 5G Core Network
  • UE User Equipment
  • the elements of the 5GC also called Network Functions, have been simplified with some of them being software based, and some being hardware based, so that they could be adapted according to need.
  • example embodiments disclosed herein are directed to solving the issues relating to one or more of the problems presented in the prior art, as well as providing additional features that will become readily apparent by reference to the following detailed description when taken in conjunction with the accompany drawings.
  • example systems, methods, devices and computer program products are disclosed herein. It is understood, however, that these embodiments are presented by way of example and are not limiting, and it will be apparent to those of ordinary skill in the art who read the present disclosure that various modifications to the disclosed embodiments can be made while remaining within the scope of this disclosure.
  • a wireless communication device may determine a first reference signal (RS) in a beam state.
  • the wireless communication device may determine a first information of a first signal, according to the first RS.
  • the first information may comprise at least one of: quasi-co-location (QCL) information, spatial information, pathloss (PL) information, or beam failure detection (BFD) information.
  • QCL quasi-co-location
  • PL pathloss
  • BFD beam failure detection
  • the wireless communication device may determine the QCL information of the first signal, according to the first RS. In some embodiments, determining the QCL information of the first signal may comprise receiving, by the wireless communication device, the first signal with a same spatial domain transmission filter used for transmission of the first RS. In some embodiments, determining the QCL information of the first signal may comprise receiving, by the wireless communication device, the first signal with a spatial domain transmission filter that is inferred from a spatial domain transmission filter used for the transmission of the first RS.
  • determining the QCL information of the first signal may comprise inferring, by the wireless communication device, a large-scale property of a channel over which a symbol on an antenna port of the first signal is conveyed, from a channel over which a symbol on an antenna port associated with the first RS is conveyed.
  • the wireless communication device may determine the spatial information of the first signal, according to the first RS.
  • determining the spatial information of the first signal may comprise transmitting, by the wireless communication device, the first signal with a same spatial domain transmission filter used for reception of the first RS.
  • determining the spatial information of the first signal may comprise transmitting, by the wireless communication device, the first signal with a spatial domain transmission filter that is inferred from a spatial domain transmission filter used for the reception of the first RS.
  • the first RS may comprise at least one of: a channel state information reference signal (CSI-RS) , a synchronization signal block (SSB) or a sounding reference signal (SRS) .
  • the first signal may comprise at least one of: a physical downlink shared channel (PDSCH) , a physical downlink control channel (PDCCH) , a channel state information reference signal (CSI-RS) , a physical uplink shared channel (PUSCH) , a physical uplink control channel (PUCCH) , or a sounding reference signal (SRS) .
  • the first RS may comprise a sounding reference signal (SRS) .
  • a usage of the SRS may include at least one of codebook (CB) based transmission, non-codebook (NCB) based transmission, antenna switching, or beam management (BM) .
  • CB codebook
  • NCB non-codebook
  • BM beam management
  • a type of the first RS may include at least one of: periodic, semi-persistent, or aperiodic.
  • the wireless communication device may determine the first information of the first signal, according to a second RS associated with the first RS.
  • the second RS may include at least one of: a channel state information reference signal (CSI-RS) , a synchronization signal block (SSB) or a sounding reference signal (SRS) .
  • the wireless communication device may determine the QCL information of the first signal, according to a second RS associated with the first RS.
  • determining the QCL information of the first signal may comprise inferring, by the wireless communication device, a large-scale property of a channel over which a symbol on an antenna port of the first signal is conveyed, from a channel over which a symbol on an antenna port of the second RS associated with the first RS is conveyed.
  • the CSI-RS may include at least one of: a CSI-RS for use as a tracking reference signal (TRS) , or a CSI-RS for beam management (BM) .
  • TRS tracking reference signal
  • BM beam management
  • a type of the second RS may include at least one of: periodic, semi-persistent, or aperiodic.
  • the second RS may be a quasi-co-location (QCL) RS of the first RS, where the QCL RS comprises a RS that is a source of any QCL-Type information.
  • the second RS may be a spatial relation RS of the first RS, where the spatial relation RS comprises a RS that is a source of spatial relation information.
  • the second RS may comprise a CSI-RS associated with a resource set that includes a resource of the first RS.
  • the second RS may be path-loss (PL) RS of the first RS, where the PL RS comprises a RS used to calculate path loss of the first signal.
  • PL path-loss
  • a QCL RS or spatial relation RS of the second RS may be same as a QCL RS or spatial relation RS of the first RS.
  • the QCL RS or spatial relation RS of the second RS may be associated with the QCL RS or spatial relation RS of the first RS.
  • the beam state may further include a third RS.
  • the third RS may provide a first QCL Type information of the first signal.
  • the first RS may provide a second QCL Type information of the first signal, which is different from the first QCL Type.
  • the second RS may be associated with the third RS.
  • the third RS may include at least one of: a CSI-RS, a SBB, or a SRS.
  • the second RS may be a quasi-co-location (QCL) RS of the third RS, where the QCL RS comprises a RS that is a source of any QCL-Type information.
  • QCL quasi-co-location
  • the second RS may be a spatial relation RS of the third RS, where the spatial relation RS comprises a RS that is a source of spatial relation information. In some embodiments, the second RS may be same as the third RS. In some embodiments, a QCL RS of the second RS may be same as a QCL RS of the third RS, where the spatial relation RS comprises a RS that is a source of spatial relation information. In some embodiments, the QCL RS of the second RS may be associated with the QCL RS of the third RS.
  • the first signal may comprise a first sounding reference signal (SRS) .
  • the first RS may comprise a second SRS.
  • a usage of the first SRS may include at least one of: codebook (CB) based transmission, non-codebook (NCB) based transmission, antenna switching, or beam management (BM) .
  • the first signal comprises a first SRS
  • the first RS comprises a second SRS
  • a usage of the first SRS includes at least one of: CB based transmission, NCB based transmission, antenna switching, or BM
  • a usage of the second SRS may not be expected by the wireless communication device to include at least one of: CB based transmission, NCB based transmission, BM, or antenna switching.
  • the first signal may comprise a first SRS.
  • the first RS may comprise a second SRS.
  • a usage of the first SRS in the first signal may include at least one of: CB based transmission, NCB based transmission, antenna switching, or BM.
  • the first signal comprises a first SRS
  • the first RS comprises a second SRS
  • a usage of the first SRS in the first signal includes at least one of: CB based transmission, NCB based transmission, antenna switching, or BM
  • a usage of the second SRS may be expected by the wireless communication device to include at least one of: CB based transmission, NCB based transmission, BM, or antenna switching.
  • the first RS may comprise a sounding reference signal (SRS) .
  • the SRS may belong to a SRS resource set.
  • one or more SRSs belonging to the SRS resource set may be transmitted with a same uplink spatial domain transmission filter.
  • one or more SRSs belonging to the SRS resource set may be transmitted with different uplink spatial domain transmission filters.
  • the SRS resource set may be configured with “repetition on” or “repetition off” .
  • FIG. 1 illustrates an example cellular communication network in which techniques disclosed herein may be implemented, in accordance with an embodiment of the present disclosure
  • FIG. 2 illustrates a block diagram of an example base station and a user equipment device, in accordance with some embodiments of the present disclosure
  • FIG. 3 illustrates example approaches for transmit (Tx) beam sweeping and Tx beam refinement, in accordance with some embodiments of the present disclosure
  • FIGs. 4-10 illustrate various approaches for determining first information of a first signal according to one or more reference signals, in accordance with some embodiments of the present disclosure.
  • FIG. 11 illustrates a flow diagram of an example method for determining QCL information based on reference signal, in accordance with an embodiment of the present disclosure.
  • FIG. 1 illustrates an example wireless communication network, and/or system, 100 in which techniques disclosed herein may be implemented, in accordance with an embodiment of the present disclosure.
  • the wireless communication network 100 may be any wireless network, such as a cellular network or a narrowband Internet of things (NB-IoT) network, and is herein referred to as “network 100.
  • NB-IoT narrowband Internet of things
  • Such an example network 100 includes a base station 102 (hereinafter “BS 102” ; also referred to as wireless communication node) and a user equipment device 104 (hereinafter “UE 104” ; also referred to as wireless communication device) that can communicate with each other via a communication link 110 (e.g., a wireless communication channel) , and a cluster of cells 126, 130, 132, 134, 136, 138 and 140 overlaying a geographical area 101.
  • the BS 102 and UE 104 are contained within a respective geographic boundary of cell 126.
  • Each of the other cells 130, 132, 134, 136, 138 and 140 may include at least one base station operating at its allocated bandwidth to provide adequate radio coverage to its intended users.
  • the BS 102 may operate at an allocated channel transmission bandwidth to provide adequate coverage to the UE 104.
  • the BS 102 and the UE 104 may communicate via a downlink radio frame 118, and an uplink radio frame 124 respectively.
  • Each radio frame 118/124 may be further divided into sub-frames 120/127 which may include data symbols 122/128.
  • the BS 102 and UE 104 are described herein as non-limiting examples of “communication nodes, ” generally, which can practice the methods disclosed herein. Such communication nodes may be capable of wireless and/or wired communications, in accordance with various embodiments of the present solution.
  • FIG. 2 illustrates a block diagram of an example wireless communication system 200 for transmitting and receiving wireless communication signals (e.g., OFDM/OFDMA signals) in accordance with some embodiments of the present solution.
  • the system 200 may include components and elements configured to support known or conventional operating features that need not be described in detail herein.
  • system 200 can be used to communicate (e.g., transmit and receive) data symbols in a wireless communication environment such as the wireless communication environment 100 of Figure 1, as described above.
  • the System 200 generally includes a base station 202 (hereinafter “BS 202” ) and a user equipment device 204 (hereinafter “UE 204” ) .
  • the BS 202 includes a BS (base station) transceiver module 210, a BS antenna 212, a BS processor module 214, a BS memory module 216, and a network communication module 218, each module being coupled and interconnected with one another as necessary via a data communication bus 220.
  • the UE 204 includes a UE (user equipment) transceiver module 230, a UE antenna 232, a UE memory module 234, and a UE processor module 236, each module being coupled and interconnected with one another as necessary via a data communication bus 240.
  • the BS 202 communicates with the UE 204 via a communication channel 250, which can be any wireless channel or other medium suitable for transmission of data as described herein.
  • system 200 may further include any number of modules other than the modules shown in Figure 2.
  • modules other than the modules shown in Figure 2.
  • Those skilled in the art will understand that the various illustrative blocks, modules, circuits, and processing logic described in connection with the embodiments disclosed herein may be implemented in hardware, computer-readable software, firmware, or any practical combination thereof. To clearly illustrate this interchangeability and compatibility of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps are described generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software can depend upon the particular application and design constraints imposed on the overall system. Those familiar with the concepts described herein may implement such functionality in a suitable manner for each particular application, but such implementation decisions should not be interpreted as limiting the scope of the present disclosure
  • the UE transceiver 230 may be referred to herein as an "uplink" transceiver 230 that includes a radio frequency (RF) transmitter and a RF receiver each comprising circuitry that is coupled to the antenna 232.
  • a duplex switch (not shown) may alternatively couple the uplink transmitter or receiver to the uplink antenna in time duplex fashion.
  • the BS transceiver 210 may be referred to herein as a "downlink" transceiver 210 that includes a RF transmitter and a RF receiver each comprising circuity that is coupled to the antenna 212.
  • a downlink duplex switch may alternatively couple the downlink transmitter or receiver to the downlink antenna 212 in time duplex fashion.
  • the operations of the two transceiver modules 210 and 230 may be coordinated in time such that the uplink receiver circuitry is coupled to the uplink antenna 232 for reception of transmissions over the wireless transmission link 250 at the same time that the downlink transmitter is coupled to the downlink antenna 212. Conversely, the operations of the two transceivers 210 and 230 may be coordinated in time such that the downlink receiver is coupled to the downlink antenna 212 for reception of transmissions over the wireless transmission link 250 at the same time that the uplink transmitter is coupled to the uplink antenna 232. In some embodiments, there is close time synchronization with a minimal guard time between changes in duplex direction.
  • the UE transceiver 230 and the base station transceiver 210 are configured to communicate via the wireless data communication link 250, and cooperate with a suitably configured RF antenna arrangement 212/232 that can support a particular wireless communication protocol and modulation scheme.
  • the UE transceiver 210 and the base station transceiver 210 are configured to support industry standards such as the Long Term Evolution (LTE) and emerging 5G standards, and the like. It is understood, however, that the present disclosure is not necessarily limited in application to a particular standard and associated protocols. Rather, the UE transceiver 230 and the base station transceiver 210 may be configured to support alternate, or additional, wireless data communication protocols, including future standards or variations thereof.
  • LTE Long Term Evolution
  • 5G 5G
  • the BS 202 may be an evolved node B (eNB) , a serving eNB, a target eNB, a femto station, or a pico station, for example.
  • eNB evolved node B
  • the UE 204 may be embodied in various types of user devices such as a mobile phone, a smart phone, a personal digital assistant (PDA) , tablet, laptop computer, wearable computing device, etc.
  • PDA personal digital assistant
  • the processor modules 214 and 236 may be implemented, or realized, with a general purpose processor, a content addressable memory, a digital signal processor, an application specific integrated circuit, a field programmable gate array, any suitable programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described herein.
  • a processor may be realized as a microprocessor, a controller, a microcontroller, a state machine, or the like.
  • a processor may also be implemented as a combination of computing devices, e.g., a combination of a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other such configuration.
  • the steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in firmware, in a software module executed by processor modules 214 and 236, respectively, or in any practical combination thereof.
  • the memory modules 216 and 234 may be realized as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
  • memory modules 216 and 234 may be coupled to the processor modules 210 and 230, respectively, such that the processors modules 210 and 230 can read information from, and write information to, memory modules 216 and 234, respectively.
  • the memory modules 216 and 234 may also be integrated into their respective processor modules 210 and 230.
  • the memory modules 216 and 234 may each include a cache memory for storing temporary variables or other intermediate information during execution of instructions to be executed by processor modules 210 and 230, respectively.
  • Memory modules 216 and 234 may also each include non-volatile memory for storing instructions to be executed by the processor modules 210 and 230, respectively.
  • the network communication module 218 generally represents the hardware, software, firmware, processing logic, and/or other components of the base station 202 that enable bi-directional communication between base station transceiver 210 and other network components and communication nodes configured to communication with the base station 202.
  • network communication module 218 may be configured to support internet or WiMAX traffic.
  • network communication module 218 provides an 802.3 Ethernet interface such that base station transceiver 210 can communicate with a conventional Ethernet based computer network.
  • the network communication module 218 may include a physical interface for connection to the computer network (e.g., Mobile Switching Center (MSC) ) .
  • MSC Mobile Switching Center
  • the Open Systems Interconnection (OSI) Model (referred to herein as, “open system interconnection model” ) is a conceptual and logical layout that defines network communication used by systems (e.g., wireless communication device, wireless communication node) open to interconnection and communication with other systems.
  • the model is broken into seven subcomponents, or layers, each of which represents a conceptual collection of services provided to the layers above and below it.
  • the OSI Model also defines a logical network and effectively describes computer packet transfer by using different layer protocols.
  • the OSI Model may also be referred to as the seven-layer OSI Model or the seven-layer model.
  • a first layer may be a physical layer.
  • a second layer may be a Medium Access Control (MAC) layer.
  • MAC Medium Access Control
  • a third layer may be a Radio Link Control (RLC) layer.
  • a fourth layer may be a Packet Data Convergence Protocol (PDCP) layer.
  • PDCP Packet Data Convergence Protocol
  • a fifth layer may be a Radio Resource Control (RRC) layer.
  • a sixth layer may be a Non Access Stratum (NAS) layer or an Internet Protocol (IP) layer, and the seventh layer being the other layer.
  • NAS Non Access Stratum
  • IP Internet Protocol
  • Certain systems may use/introduce/establish a unified transmission configuration indicator (TCI) framework.
  • TCI transmission configuration indicator
  • a synchronization signal block (SSB) and/or a channel state information reference signal (CSI-RS) can be used as a source reference signal (RS) of a downlink (DL) signal for DL beam indication.
  • CSI-RS channel state information reference signal
  • RS source reference signal
  • a sounding reference signal may be used as a source RS of a DL signal for DL beam indication.
  • a SRS can be configured in the indicated beam state applied for the physical downlink shared channel (PDSCH) .
  • PDSCH physical downlink shared channel
  • the type D quasi co-location (QCL-TypeD) can be obtained/acquired/determined by using the SRS based on (or according to) beam correspondence.
  • a wireless communication device e.g., a UE, a terminal, and/or a served node
  • the QCL-TypeA or other quasi co-location (QCL) information
  • the QCL-TypeA RS may be explicitly configured in the indicated beam state. Furthermore, the SRS may be used as a QCL-TypeD RS. If the QCL-TypeA RS is configured in the indicated beam state and/or the SRS is used as a QCL-TypeD RS, the DL receive (Rx) beam corresponding to the SRS may be inconsistent/incongruous with the DL Rx beam corresponding to the QCL-TypeA RS.
  • the wireless communication device may be unable to obtain/acquire/determine/identify the QCL information (e.g., QCL-TypeA and/or other information) . Furthermore, the wireless communication device may be unable to obtain/acquire/determine the pathloss reference signal (PL-RS) of an uplink (UL) signal and/or one or more beam failure detection (BFD) reference signals (RSs) .
  • PL-RS pathloss reference signal
  • UL uplink
  • BFD beam failure detection
  • the systems and methods presented herein include a novel approach for determining valid QCL information based on (or according to) the SRS and/or other information.
  • Certain systems may use/enable/introduce analog beam-forming in mobile communications.
  • Analog beam-forming techniques may increase/enhance the robustness of high frequency communications.
  • Certain beam indication/update techniques can be implemented by indicating/specifying/providing/identifying a beam state (e.g., a TCI state for DL signals, spatial relation information for UL signals and/or other information) .
  • the beam state may be indicated/specified by using radio resource control (RRC) signaling, media access control control element (MAC-CE) signaling, downlink control information (DCI) , and/or other information or signals.
  • RRC radio resource control
  • MAC-CE media access control control element
  • DCI downlink control information
  • the wireless communication device may assume a spatial filter (e.g., a beam) of a target signal includes or corresponds to a spatial filter of a reference (or source) RS in the indicated beam state.
  • the source RS may comprise a SSB, a CSI-RS, a SRS and/or other signals.
  • a SRS can only be used as a source RS of an UL signal.
  • a wireless communication device e.g., UE
  • a DL Rx beam may be used as an UL transmit (Tx) beam.
  • a same beam state (e.g., TCI state) can be used to provide/indicate/specify beam information for DL and/or UL signals. Therefore, the SSB, CSI-RS and/or SRS can be used as a source RS of a DL signal for DL beam indication.
  • QCL information may be provided/specified for DL beam indication (e.g., PDSCH and/or other DL signals/channels) .
  • the QCL information may include QCL-TypeA (e.g., Doppler spread, Doppler shift, delay spread, average delay and/or average gain) and/or QCL-TypeD (e.g., a spatial parameter and/or beam) .
  • the source RS of QCL-TypeA (e.g., QCL-TypeA RS) and/or QCL-TypeD (e.g., QCL-TypeD RS) may include or correspond to a SSB and/or CSI-RS.
  • the SRS may be configured in the indicated beam state.
  • the QCL-TypeD can be obtained/acquired/determined with the SRS based on (or according to) beam correspondence.
  • the QCL-TypeA may not be obtained through/with/using the SRS (e.g., the QCL-TypeA RS must be a DL RS) .
  • the QCL-TypeA RS may be configured in the indicated beam state. Furthrmore, the SRS may be used as the QCL-TypeD RS.
  • the wireless communication device may be unable to obtain/acquire/determine the PL-RS of an UL signal and/or one or more BFD RSs.
  • a beam state may include or correspond to a QCL state, QCL assumption, QCL information, RS, TCI state and/or spatial relation information.
  • a QCL and/or TCI state may comprise one or more reference RSs (e.g., QCL RSs) and/or one or more corresponding QCL type parameters.
  • the one or more QCL type parameters may include at least one of the following: Doppler spread, Doppler shift, delay spread, average delay, average gain, and/or spatial parameter.
  • a QCL type may include or correspond to QCL-TypeD (or other QCL types) .
  • the QCL-TypeD may represent/specify/indicate a same or quasi-co spatial parameter between a targeted RS/channel and one or more reference QCL-TypeD RSs.
  • “A is a QCL RS of B” may indicate/specify that the QCL type parameter (s) of A is/are the same as the QCL type parameter (s) of B.
  • the spatial relation information may comprise one or more reference RSs (e.g., spatial RS, spatial relation RS, and/or spatial source RS) .
  • the spatial information comprising one or more reference RSs can be used to represent a same or quasi-co spatial relation between a targeted RS/channel and one or more reference RSs.
  • QCL-TypeD may include or correspond to a spatial parameter and/or a spatial Rx parameter.
  • “A is a spatial RS of B” may indicate/specify that the spatial parameter (s) of A is/are the same as the spatial parameter (s) of B.
  • QCL, QCL assumption, and/or QCL information may include at least one of the following: Doppler spread, Doppler shift, delay spread, average delay, average gain, and/or spatial parameter.
  • a spatial relation and/or spatial filter can correspond to a wireless communication side (e.g., UE-side) and/or a wireless communication node (e.g., a ground terminal, a base station, a gNB, an eNB, a transmission-reception point (TRP) , or a serving node) side (e.g., gNB-side) .
  • a spatial filter may refer to a spatial domain transmission filter and/or spatial domain filter.
  • a beam may include or correspond to a QCL assumption, spatial relation and/or spatial filter.
  • a path-loss may include or correspond to a couple loss.
  • the SRS may be unable to provide/specify/identify the QCL information (or other information) of one or more DL signals.
  • the systems and methods presented herein include a novel approach for obtaining/acquiring/determining the QCL information of the one or more DL signals based on (or according to) the SRS.
  • the wireless communication device may determine/configure a first information of a first signal (e.g., a SRS or other signals) according to (or based on) a first RS (e.g., a CSI-RS or other RSs) in a beam state (e.g., TCI state) .
  • the first information may include at least one of: QCL information, spatial information, pathloss information, BFD information, and/or information.
  • the first signal may include at least one of: a PDSCH, a physical downlink control channel (PDCCH) , a CSI-RS, a PUSCH, a PUCCH, and/or a SRS.
  • the first RS may include at least one of: a SRS, a CSI-RS, and/or a SSB.
  • determining the first information of A according to B may indicate/convey/denote that the first information of A is the same as the first information of B. Furthermore, determining the first information of A according to B may indicate/convey/denote that the first information of A is distinct/separate/different from the first information of B. In some embodiments, the first information of A may be inferred/determined according to (or based on) the first information of B. In some embodiments, A may include or correspond to a target signal, while B may include or correspond to a source (or reference) RS. Referring now to FIG. 3, depicted is a representation 300 of a Tx beam sweeping and Tx beam refinement.
  • the wireless communication device may be configured with at least three (or other numbers) SRS resources (e.g., SRS-0, SRS-1, SRS-2, and/or other target signals) and/or corresponding spatial relation information (e.g., a CSI-RS used as a reference RS) to perform/execute Tx beam sweeping (e.g., FIG. 3 (A) ) .
  • the wireless communication device may determine the beam (spatial relation) of the SRS (e.g., a first signal) according to (or based on) the CSI-RS (e.g., a first RS) .
  • the wireless communication device may transmit/send/broadcast the SRS (e.g., a first signal) with a same/corresponding spatial domain transmission filter used for the reception of the CSI-RS (e.g., a first RS) .
  • the at least three SRSs may include or correspond to three different/separate/distinct Tx beams (e.g., SRS-0, SRS-1, SRS-2 and/or other SRSs) .
  • the wireless communication node may determine/identify an optimal/ideal beam pair (or Tx beam) using beam measurements (e.g., SRS-1 and/or other SRSs) .
  • the wireless communication device may be configured with at least three (or other numbers) SRS resources (e.g., SRS-0, SRS-1, SRS-2 and/or other SRS resources) to perform Tx beam refinement (e.g., FIG. 3 (B) ) .
  • Each SRS resource may be configured with a spatial relation information, for instance, a CSI-RS used as a reference RS.
  • Each CSI-RS of the at least three SRSs may point/specify/indicate/identify the same beam (e.g., SRS-1) .
  • the at least three SRS resources may correspond to a same SRS resource set configured with the spatial relation information.
  • the actual beam of the SRS may be different/distinct/separate from the CSI-RS (e.g., information A may be different from information B, but information A can be inferred from information B) .
  • the beams of at least three SRSs e.g., SRS-3, SRS-4, and/or SRS-5
  • SRS-1 e.g., the angle between the beam direction of the SRS (target beam) and the beam direction of SRS-1 (reference beam) may be less than or equal to a certain threshold
  • the wireless communication device can determine the spatial relation of the SRS according to (or based on) the CSI-RS.
  • the wireless communication device can infer/determine the spatial relation of the SRS from the CSI-RS. Furthermore, the wireless communication device can send/transmit/broadcast the SRS (e.g., a first signal) with/using/according to a preferred (e.g., determined by the wireless communication device) spatial domain transmission filter.
  • the preferred spatial domain filter may refer to (or is inferred from) the spatial domain transmission filter used for the reception of the CSI-RS (e.g., a first RS) .
  • the wireless communication device may determine/configure the QCL information of the first signal (e.g., a SRS or other signals) according to (or based on) the first RS (e.g., a CSI-RS or other RSs) . For instance, the wireless communication device may determine the QCL information of the PDSCH (or other DL channels/signals) according to a SRS (or other signals) . Therefore, the wireless communication device may receive/obtain/acquire the PDSCH (e.g., a first signal) with the same spatial domain transmission filter used for the transmission of the SRS (e.g., a first RS) . In some embodiments, the wireless communication device may receive/obtain the PDSCH with a spatial domain transmission filter inferred from (or according to) the spatial domain transmission filter used for the transmission of the SRS.
  • the first signal e.g., a SRS or other signals
  • the wireless communication device may determine the QCL information of the PDSCH (
  • a first RS may comprise/include a SRS and/or other signals.
  • a SRS resource set may include one or more SRS resources.
  • the SRS resource set may be configured with “repetition on” or “repetition off” .
  • Higher layer signaling such as RRC or MAC-CE signaling, may be used to provide/specify/indicate a higher layer configuration “repetition” to the wireless communication device.
  • a “repetition” can be set to “on” or “off” . If the SRS resource set is configured with “repetition on” , the wireless communication device may assume/determine that the one or more SRS resources of the SRS resource set are transmitted with/using the same/corresponding uplink spatial domain transmission filter.
  • the wireless communication device may send/transmit the one or more SRS resources of the SRS resource set using the same/corresponding uplink spatial domain transmission filter
  • the uplink spatial domain transmission filter can be determined according to (or based on) a RS.
  • the RS may be associated/related/linked with the SRS resource set and/or at least one SRS of the SRS resource set. If the SRS resource set is configured with “repetition off” and/or “repetition” is absent, the wireless communication device may be unable to determine/ascertain that the one or more SRS resources of the SRS resource set are transmitted with the same uplink spatial domain transmission filter. Therefore, the wireless communication device may send/transmit the one or more SRS resources of the SRS resource set with/using different/distinct/separate uplink spatial domain transmission filters.
  • a usage of a first RS may include at least one of: codebook (CB) based transmission, non-codebook (NCB) transmission, antenna switching, and/or beam management (BM) .
  • CB codebook
  • NCB non-codebook
  • BM beam management
  • a type e.g., time domain type
  • a first RS e.g., SRS, CSI-RS, and/or other RSs
  • the wireless communication device may determine/configure a first information of the first signal (e.g., a target signal) according to (or based on) a second RS.
  • the second RS may be associated/related/linked with the first RS.
  • the second RS may include at least one of: a SRS, a CSI-RS, a SSB, and/or other RSs.
  • “A is associated with B” may indicate that A can be determined according to (or based on) B.
  • the second RS (e.g., A) is associated with the first RS (e.g., B)
  • the second RS (or properties of the second RS) may be determined according to (or based on) the first RS (or properties of the first RS) .
  • the wireless communication device may determine/configure/identify the QCL information of the first signal according to (or based on) a second RS associated with the first RS.
  • the wireless communication device e.g., UE
  • the DL RS may be associated/related with a SRS (e.g., the first RS) and/or other reference signals.
  • the association/relationship between the DL RS (e.g., the second RS) and the SRS (e.g., the first RS) may correspond to at least one of the following associations/relationships.
  • the following associations/relationships can be equivalent to each other.
  • the PDSCH (e.g., the first signal) and the DL RS (e.g., the second RS) associated with the SRS (e.g., the first RS) may be quasi co-located (QCL) .
  • QCL quasi co-located
  • the antenna port of the PDSCH and the antenna port of the DL RS associated with the SRS may be quasi co-located.
  • the PDSCH and the SRS may be quasi co-located.
  • “A and B are QCL” may indicate/specify that large-scale properties of a channel over which a symbol on an antenna port of A (e.g., the first signal) is conveyed are inferred from a channel over which a symbol on an antenna port associated with B is conveyed.
  • A e.g., the first signal
  • B the SRS
  • “A and C associated with B are QCL” may indicate/specify that the large-scale properties of the channel over which a symbol on an antenna port of A (e.g., the first signal) is conveyed are inferred from the channel over which a symbol on an antenna port of C (e.g., the second RS) associated with B (e.g., the first RS) is conveyed.
  • the large-scale properties of the channel over which a symbol on an antenna port of the PDSCH is conveyed can be inferred from the channel over which a symbol on an antenna port of the DL RS associated with the SRS is conveyed.
  • the large-scale properties e.g., QCL type parameters
  • FIG. 4 depicted is a representation 400 of an example approach for determining QCL information/assumption (e.g., the first information) according to (or based on) a RS (e.g., DL RS) .
  • the wireless communication device e.g., UE
  • the wireless communication device may determine the QCL assumption according to (or based on) a DL RS (e.g., CSI-RS, SSB, and/or other RSs) and/or other information.
  • a DL RS e.g., CSI-RS, SSB, and/or other RSs
  • the DL RS may have an association/relationship with a SRS (or other signals) in a TCI state (or beam state) .
  • a wireless communication node e.g., gNB
  • DCI downlink control information
  • the wireless communication node may indicate/provide/specify a TCI state (or other information) to the wireless communication device using the DCI.
  • the TCI state may include/provide/specify/indicate at least one SRS (or other RSs) and/or other information.
  • the SRS of the TCI state (e.g., the first RS) may include or correspond to a reference RS.
  • the wireless communication device may determine/configure/obtain/acquire a QCL assumption (e.g., QCL-TypeA and/or QCL-TypeD) of the PDSCH (e.g., the first signal) according to (or based on) the DL RS (e.g., the second RS) associated with the SRS of the TCI state (e.g., the first RS) .
  • the wireless communication device may determine/identify/specify/select/use a DL RS that has an association/relationship with the SRS of the TCI state.
  • the wireless communication device may obtain/acquire/determine the QCL-TypeA and/or QCL-TypeD of the PDSCH (e.g., according to the DL RS associated with the SRS) .
  • the DL RS can be used as the QCL-TypeA RS and/or QCL-Type D RS of the PDSCH.
  • the wireless communication device e.g., UE
  • the wireless communication device can determine/configure/identify a QCL assumption of a PDSCH (or other DL channels/signals) .
  • the wireless communication device may determine the QCL assumption according to (or based on) at least two DL RS (e.g., CSI-RS, SSB, and/or other DL RSs) .
  • the at least two DL RS may have an association/relationship with a SRS (or other signals) in a TCI state.
  • the wireless communication node may indicate/specify/provide a TCI state (or other information) to the wireless communication device via DCI.
  • the wireless communication node may send/transmit/broadcast the DCI to the wireless communication device, wherein the DCI includes/provides/specifies the TCI state and/or other information.
  • the TCI state may include at least one SRS (or other signals) .
  • the at least one SRS (e.g., the first RS) can be used as a reference RS.
  • the wireless communication device may obtain/acquire the QCL-TypeA and/or QCL-TypeD of the PDSCH (e.g., the first signal) according to the at least two DL RS.
  • the wireless communication device may determine/identify/use at least two DL RSs (e.g., DL RS-1 and/or DL RS-2) .
  • the at least two DL RSs may be associated/related with the at least one SRS of the TCI state. Therefore, the wireless communication device can obtain/acquire/determine the QCL-TypeA and/or QCL-TypeD of the PDSCH based on the at least two DL RSs associated with the at least one SRS.
  • the at least two DL RSs e.g., DL RS-1 and/or DL RS-2 can be used as the QCL-TypeA RS and QCL-TypeD RS of the PDSCH respectively.
  • the wireless communication device can obtain/acquire/determine the QCL-TypeA and/or QCL-TypeD of the PDSCH (e.g., the first signal) by directly using (or according to) at least one SRS of the TCI state (e.g., the first RS) and/or other information.
  • the wireless communication device can determine the at least one SRS (or other reference signals) is the QCL-TypeD RS (or QCL-TypeA RS) of the PDSCH (or other DL channels/signals) . Furthermore, the wireless communication device may determine/identify/obtain the QCL-TypeA (or QCL-TypeD) of the PDSCH according to (or based on) a DL RS (e.g., the second RS) associated with the SRS (e.g., obtain the QCL assumption of the PDSCH indirectly from the at least one SRS) . In other words, the DL RS can be used as the QCL-TypeA RS of the PDSCH.
  • a DL RS e.g., the second RS
  • the DL RS can be used as the QCL-TypeA RS of the PDSCH.
  • the TCI state may include/provide at least two reference signals (e.g., a first RS and a third RS) .
  • the TCI state may include a CSI-RS (e.g., the third RS) and/or a SRS (e.g., the first RS) .
  • the wireless communication device may determine the CSI-RS (or other reference signals) is the QCL-TypeA RS (or QCL-TypeD RS) of the PDSCH (and/or other DL signals/channels) . Therefore, the wireless communication device can obtain/acquire/determine/configure the QCL-TypeA of the PDSCH (e.g., the first signal) according to (or based on) the CSI-RS of the TCI state directly. To obtain/determine/configure the QCL-TypeD (or QCL-TypeA) of the PDSCH, the wireless communication device may determine/identify/use a DL RS (e.g., the second RS) associated with the SRS of the TCI state.
  • a DL RS e.g., the second RS
  • the wireless communication device may obtain/determine the QCL-TypeD of the PDSCH according to (or based on) the DL RS associated with the SRS of the TCI state and/or other information.
  • the DL RS can be used as the QCL-TypeD RS of the PDSCH.
  • a type (e.g., a time domain type) of the second RS may include at least one of: periodic, semi-persistent, and/or aperiodic.
  • a CSI-RS of the second RS may include at least one of: a CSI-RS for use as a tracking reference signal (TRS) and/or a CSI-RS for BM.
  • TRS tracking reference signal
  • the CSI-RS for use as a TRS may indicate/specify that the CSI-RS resource set including the CSI-RS is configured with “trs-Info” via higher layer signaling (such as RRC signaling) .
  • the CSI-RS for BM may indicate/specify that the CSI-RS resource set including the CSI-RS is configured with “repetition” via higher layer signaling (such as RRC signaling) .
  • “repetition” may be configured as “on” or “off” (e.g., “repetition on” and “repetition off” ) .
  • “the second RS is associated with the first RS” may describe/indicate/specify at least one of the following aspects:
  • the second RS may be a QCL RS of the first RS.
  • a CSI-RS and/or SSB can be a QCL RS of a CSI-RS.
  • the QCL RS may comprise a RS that is a source of any QCL-Type information.
  • the second RS may be a spatial relation RS of the first RS.
  • a CSI-RS, SSB and/or SRS can be a spatial relation RS of a SRS.
  • the spatial relation RS may comprise a RS that is a source of spatial relation information.
  • the second RS may be a CSI-RS associated/related/linked with a resource set that includes a resource of the first RS.
  • the second RS may include or correspond to a CSI-RS associated with a SRS resource set that includes a SRS resource of the SRS.
  • the usage of the SRS resource set may be NCB.
  • the NCB SRS may be configured with an associated CSI-RS using/via higher layer signaling (e.g., RRC signaling and/or other types of signaling) .
  • the second RS may be a PL RS of the first RS.
  • a CSI-RS and/or SSB may be a PL RS of a SRS.
  • the PL RS may comprise a RS used to calculate/determine path loss of the SRS (e.g., the first signal) .
  • a QCL RS and/or spatial relation RS of the second RS may be a QCL RS and/or spatial relation RS of the first RS.
  • the QCL RS and/or spatial relation RS of the second RS may be the same as the QCL RS and/or spatial RS of the first RS.
  • a SSB (or other reference signals) may be the QCL-TypeD RS (or QCL-TypeA RS) of the second RS (e.g., a CSI-RS and/or other reference signals) .
  • the SSB may be the spatial relation RS of the first RS (e.g., a SRS and/or other reference signals) .
  • a QCL RS and/or spatial relation RS of the second RS may be associated/related with a QCL RS and/or spatial relation RS of the first RS (e.g., a SRS) .
  • the QCL-TypeD RS (or QCL-TypeA RS) of the second RS can be associated with the spatial relation RS of the first RS (e.g., a SRS and/or other reference signals) .
  • the beam state or TCI state may include a first RS (e.g., SRS and/or other reference signals) and/or a third RS (e.g., a CSI-RS and/or other reference signals) .
  • the third RS may provide/specify/indicate a first QCL Type information (e.g., QCL-TypeA information) of the first signal (e.g., a PDSCH) .
  • the first RS may provide a second QCL Type information (e.g., QCL-TypeD information) of the first signal, which is different from the first QCL Type.
  • the Rx beam corresponding to the second RS may be consistent with the Rx beam corresponding to the third RS (e.g., CSI-RS and/or the QCL-TypeA RS configured in the TCI state) . Therefore, as shown in FIG. 10, the DL RS (e.g., the second RS) and/or the CSI-RS (e.g., the QCL-TypeA RS of the TCI state) can meet or have one or more predefined conditions and/or associations/relationships.
  • the DL RS (e.g., the second RS) may be associated with the CSI-RS (e.g., the third RS) of the beam state (e.g., QCL RS and/or spatial relation RS) .
  • the third RS may include at least one of: a CSI-RS, a SBB, and/or a SRS.
  • the third RS may include or correspond to a QCL RS and/or spatial relation RS of the beam state (TCI state) .
  • “the second RS is associated with the third RS” may indicate/specify at least one of the following associations/relationships:
  • the second RS may be a QCL RS of the third RS.
  • the QCL RS may comprise a RS that is a source of any QCL-Type information (e.g., QCL-TypeA and/or QCL-TypeD) .
  • the second RS may be a spatial relation RS of the third RS.
  • the spatial relation RS may comprise a RS that is a source of spatial relation information.
  • the second RS may be the same as (or correspond to) the third RS.
  • a QCL RS of the second RS may be a QCL RS of the third RS.
  • the spatial relation RS may comprise a RS that is a source of spatial relation information.
  • a QCL RS of the second RS may be associated with a QCL RS of the third RS.
  • the wireless communication device may have one or more expectations regarding a usage of a second SRS according to one or more conditions.
  • the one or more conditions may include that the first signal comprises a first SRS.
  • the one or more conditions may include that the first RS comprises a second SRS.
  • the one or more conditions may include that a usage of the first SRS (as a target signal) includes at least one of: CB based transmission, NCB based transmission, BM, and/or antenna switching.
  • the wireless communication device may expect that the usage of the second SRS (e.g., first RS, as a reference RS) in the beam state includes at least one of: CB based transmission, NCB based transmission, BM, and/or antenna switching. Expecting the usage of the second SRS to include at least one of: CB based transmission, NCB based transmission, BM, and/or antenna switching may avoid the first SRS from corresponding to (being the same as) the second SRS.
  • the second SRS e.g., first RS, as a reference RS
  • the systems and methods presented herein include a novel approach for obtaining/determining the PL RS of an UL signal based on (or according to) the SRS.
  • the wireless communication device may not be provided with a PL RS list and/or beam of a PUCCH (or PUCCH resource) for a scheduled PUCCH and/or PUSCH (e.g., scheduled by a DCI format 0_0) . Therefore, the wireless communication device may determine the PL RS of the PUCCH and/or PUSCH according to the QCL-TypeD RS in the activated TCI state.
  • the QCL-TypeD RS in the activated TCI state may be applied to the control resource set (CORESET) having the lowest/smallest CORESET ID in the cell where the UL signal is located. If the PL RS, PL RS list, and/or beam of the SRS are not provided, the wireless communication device may obtain/acquire the PL RS of a SRS in a manner similar to the approach for obtaining the PL RS of the scheduled PUCCH.
  • the cell may not be provided with a CORESET. If the cell is not provided with any CORESET, the wireless communication device can obtain the PL RS of the SRS according to (or based on) the QCL-TypeD RS in the activated TCI state.
  • the QCL-TypeD RS in the activated TCI state may be applied for PDSCH and/or have the lowest TCI state ID in the cell. If the QCL-TypeD RS in the activated TCI state is a SRS, the wireless communication device may be unable to obtain/acquire the PL RS (e.g., the PL RS must correspond to a DL RS, such as a periodic DL RS) .
  • the wireless communication device may obtain the PL RS of an UL signal according to the DL RS associated with the SRS in the TCI state.
  • the systems and methods for obtaining the QCL information of the DL signal can be referred to for obtaining the PL RS of an UL signal (e.g., according to the DL RS associated with the SRS) .
  • the first information may include PL RS.
  • the first information may include a path loss information, the path loss information including a PL RS.
  • the wireless communication device can obtain/acquire the RS for beam failure detection (BFD RS) according to (or based on) a DL RS.
  • the DL RS may be associated/related with the SRS (or other reference signals) in the TCI state.
  • the wireless communication device may not be provided with a BFD RS list (e.g., via RRC signaling) . Therefore, the wireless communication device may obtain one or more BFD RSs according to (or based on) the QCL-TypeD RS in the activated TCI state applied for the CORESET (s) in the current cell.
  • the wireless communication device may obtain/determine the BFD RS (s) according to the DL RS associated with the SRS in the TCI state.
  • the systems and methods for obtaining the QCL information of the DL signal can be referred to for obtaining the one or more BFD RSs.
  • the first information may include the BFD RS.
  • the first information may include a BFD information, the BFD information including a BFD RS.
  • “the first information of the first signal” may refer to “the first information” (e.g., “the wireless communication device can determine a first information according to a first RS” ) .
  • FIG. 11 illustrates a flow diagram of a method 1150 for determining QCL information based on reference signal.
  • the method 1150 may be implemented using any of the components and devices detailed herein in conjunction with FIGs. 1–10.
  • the method 1150 may include determining a first reference signal (1152) .
  • the method 1150 may include determining a first information of a first signal (1154) .
  • a wireless communication device may determine/configure a first RS in a beam state (e.g., TCI state) .
  • the first RS may include a DL RS and/or an UL RS.
  • the wireless communication device may determine the spatial information of a SRS (or other reference signals) .
  • the first RS may comprise at least one of: a CSI-RS, a SSB, a SRS, and/or other reference signals.
  • the first RS may comprise a SRS and/or other signals.
  • a usage of the SRS may include at least one of CB based transmission, NCB based transmission, antenna switching, and/or BM.
  • a type of the first RS e.g., SRS, CSI-RS, and/or other RSs
  • the wireless communication device may determine/configure/identify a first information (e.g., QCL information or other information) of a first signal (e.g., PDSCH or other channels/signals) , according to (or using) the first RS.
  • a first information e.g., QCL information or other information
  • the wireless communication device may determine the spatial information of a SRS according to (or based on) a DL RS.
  • the first information may comprise at least one of: QCL information, spatial information, PL information, BFD information, and/or other information.
  • the first signal may comprise at least one of: a PDSCH, a PDCCH, a CSI-RS, a PUSCH, a PUCCH, a SRS, and/or other signals.
  • the wireless communication device may determine/configure the QCL information (e.g., QCL-TypeA and/or QCL-TypeD) of the first signal, according to (or based on) the first RS. For example, the wireless communication device may determine the QCL information of a PUCCH according to a CSI-RS in a TCI state (or beam state) .
  • the wireless communication device may determine the QCL information by receiving/obtaining/acquiring the first signal (e.g., PDSCH) with a same/corresponding spatial domain transmission filter used for transmission of the first RS (e.g., a SRS) .
  • the wireless communication device may determine the QCL information by receiving/obtaining/acquiring the first signal with a spatial domain transmission filter.
  • the spatial domain transmission filter may be inferred/determined from a spatial domain transmission filter used for the transmission of the first RS.
  • the wireless communication device may determine the QCL information by inferring/determining a large-scale property of a channel over which a symbol on an antenna port of the first signal is conveyed, from a channel over which a symbol on an antenna port associated with the first RS is conveyed.
  • the wireless communication device may determine/configure the spatial information of the first signal, according to (or based on) the first RS. For instance, the wireless communication device may determine/configure the spatial information by transmitting/sending/communicating the first signal with a same spatial domain transmission filter used for reception of the first RS. In some embodiments, the wireless communication device may determine the spatial information by transmitting the first signal with a spatial domain transmission filter. The spatial domain filter may be inferred/determined from (or according to) a spatial domain transmission filter used for the reception of the first RS (e.g., CS-RS or other reference signals) .
  • a spatial domain transmission filter used for the reception of the first RS
  • the wireless communication device may determine/configure the first information of the first signal (e.g., the target signal) , according to a second RS (e.g., a CSI-RS, a SRS, and/or other RSs) associated/related with the first RS.
  • the second RS may include at least one of: a CSI-RS, a SSB, a SRS, and/or other reference signals.
  • the wireless communication device may determine the QCL information of a PDCCH (or other signals) according to a SSB.
  • the SSB may be associated with a SRS in a TCI state (or beam state) .
  • the wireless communication device may determine/configure the QCL information (e.g., QCL-TypeA and/or QCL-TypeD) of the first signal (e.g., PDSCH and/or other signals) , according to (or using) a second RS associated/related with the first RS.
  • the wireless communication device may use the second RS (or other information) to determine the QCL information of the first signal by inferring a large-scale property of a channel over which a symbol on an antenna port of the first signal is conveyed, from a channel over which a symbol on an antenna port of the second RS associated with the first RS is conveyed.
  • CSI-RS (e.g., CSI-RS in the second RS) may include at least one of: a CSI-RS for use as a TRS and/or a CSI-RS for BM.
  • a type e.g., a time domain types
  • the second RS may include at least one of: periodic, semi-persistent, and/or aperiodic.
  • the second RS may be a QCL RS of the first RS.
  • a CSI-RS and/or SSB may be a QCL RS of a CSI-RS.
  • the QCL RS may comprise a RS that is a source of any QCL-Type information.
  • the second RS may be a spatial relation RS of the first RS.
  • a CSI-RS, SSB and/or SRS may be a spatial relation RS of a SRS.
  • the spatial relation RS may comprise a RS that is a source of spatial relation information.
  • the second RS may comprise a CSI-RS associated/related with a resource set.
  • the resource set may include/provide/specify a resource of the first RS.
  • the second RS may be a CSI-RS associated with a SRS resource set including a SRS resource of the SRS.
  • the second RS may be a path-loss (PL) RS of the first RS.
  • the PL RS may comprise a RS used to calculate/determine path loss of the first signal.
  • a QCL RS and/or spatial relation RS of the second RS may be the same as (or correspond to) a QCL RS and/or spatial relation RS of the first RS.
  • the QCL RS and/or spatial relation RS of the second RS may be associated/related with the QCL RS and/or spatial relation RS of the first RS.
  • a beam state may further include a third RS and/or other information.
  • the third RS may provide/specify/indicate a first QCL Type information (e.g., QCL-TypeA information and/or other QCL information) of the first signal.
  • the first RS may provide/indicate/specify a second QCL Type information (e.g., QCL-TypeD information and/or other QCL information) of the first signal, which is different/separate/distinct from the first QCL Type.
  • the second RS may be associated/related with the third RS.
  • the third RS may include at least one of: a CSI-RS, a SBB, a SRS, and/or other reference signals.
  • the second RS may be a QCL RS of the third RS.
  • the QCL RS may comprise a RS that is a source of any QCL-Type information.
  • the second RS may be a spatial relation RS of the third RS.
  • the spatial relation RS may comprise a RS that is a source of spatial relation information.
  • the second RS may be the same as (or corresponds to) the third RS.
  • a QCL RS of the second RS may be the same as a QCL RS of the third RS.
  • the spatial relation RS may comprise a RS that is a source of spatial relation information.
  • the QCL RS of the second RS may be associated/related with the QCL RS of the third RS.
  • the first signal may comprise a first SRS.
  • the first RS may comprise a second SRS.
  • a usage of the first SRS may include at least one of: CB based transmission, NCB based transmission, antenna switching, and/or BM. If the first signal comprises a first SRS, the first RS comprises a second SRS, and/or a usage of the first SRS includes at least one of: CB based transmission, NCB based transmission, antenna switching, or BM, a usage of the second SRS may not be expected by the wireless communication device to include at least one of: CB based transmission, NCB based transmission, BM, and/or antenna switching.
  • a usage of the first SRS in the first signal may include at least one of: CB based transmission, NCB based transmission, antenna switching, and/or BM. If the first signal comprises a first SRS, the first RS comprises a second SRS, and/or a usage of the first SRS in the first signal includes at least one of: CB based transmission, NCB based transmission, antenna switching, or BM, a usage of the second SRS may be expected by the wireless communication device to include at least one of: CB based transmission, NCB based transmission, BM, or antenna switching.
  • the first RS may comprise a SRS (or other signals) .
  • the SRS may belong to (or may be included in) a SRS resource set.
  • one or more SRSs belonging to the SRS resource set may be transmitted/communicated with a same uplink spatial domain transmission filter.
  • one or more SRSs belonging to the SRS resource set may be transmitted/communicated with different/distinct/separate uplink spatial domain transmission filters.
  • the SRS resource set may be configured with “repetition on” or “repetition off” .
  • any reference to an element herein using a designation such as “first, “ “second, “ and so forth does not generally limit the quantity or order of those elements. Rather, these designations can be used herein as a convenient means of distinguishing between two or more elements or instances of an element. Thus, a reference to first and second elements does not mean that only two elements can be employed, or that the first element must precede the second element in some manner.
  • any of the various illustrative logical blocks, modules, processors, means, circuits, methods and functions described in connection with the aspects disclosed herein can be implemented by electronic hardware (e.g., a digital implementation, an analog implementation, or a combination of the two) , firmware, various forms of program or design code incorporating instructions (which can be referred to herein, for convenience, as "software” or a "software module) , or any combination of these techniques.
  • firmware e.g., a digital implementation, an analog implementation, or a combination of the two
  • firmware various forms of program or design code incorporating instructions
  • software or a “software module”
  • IC integrated circuit
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the logical blocks, modules, and circuits can further include antennas and/or transceivers to communicate with various components within the network or within the device.
  • a general purpose processor can be a microprocessor, but in the alternative, the processor can be any conventional processor, controller, or state machine.
  • a processor can also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other suitable configuration to perform the functions described herein.
  • Computer-readable media includes both computer storage media and communication media including any medium that can be enabled to transfer a computer program or code from one place to another.
  • a storage media can be any available media that can be accessed by a computer.
  • such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • module refers to software, firmware, hardware, and any combination of these elements for performing the associated functions described herein. Additionally, for purpose of discussion, the various modules are described as discrete modules; however, as would be apparent to one of ordinary skill in the art, two or more modules may be combined to form a single module that performs the associated functions according embodiments of the present solution.
  • memory or other storage may be employed in embodiments of the present solution.
  • memory or other storage may be employed in embodiments of the present solution.
  • any suitable distribution of functionality between different functional units, processing logic elements or domains may be used without detracting from the present solution.
  • functionality illustrated to be performed by separate processing logic elements, or controllers may be performed by the same processing logic element, or controller.
  • references to specific functional units are only references to a suitable means for providing the described functionality, rather than indicative of a strict logical or physical structure or organization.

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

Abstract

L'invention concerne des systèmes et des procédés permettant de déterminer des informations de quasi-co-localisation d'après un signal de référence. Un dispositif de communication sans fil peut déterminer un premier signal de référence (RS) dans un état de faisceau. Le dispositif de communication sans fil peut déterminer une première information d'un premier signal en fonction du premier RS. Les premières informations peuvent comprendre des informations de quasi-co-localisation (QCL), des informations spatiales, des informations de perte de trajet (PL) ou des informations de détection de défaillance de faisceau (BFD).
PCT/CN2021/071028 2021-01-11 2021-01-11 Systèmes et procédés de détermination d'informations de quasi-localisation d'après un signal de référence WO2022147818A1 (fr)

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PCT/CN2021/071028 WO2022147818A1 (fr) 2021-01-11 2021-01-11 Systèmes et procédés de détermination d'informations de quasi-localisation d'après un signal de référence
CN202180089949.1A CN116762392A (zh) 2021-01-11 2021-01-11 用于基于参考信号确定准共址信息的系统和方法

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PCT/CN2021/071028 WO2022147818A1 (fr) 2021-01-11 2021-01-11 Systèmes et procédés de détermination d'informations de quasi-localisation d'après un signal de référence

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