WO2023078394A1 - Procédé exécuté par un équipement utilisateur, et équipement utilisateur - Google Patents

Procédé exécuté par un équipement utilisateur, et équipement utilisateur Download PDF

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Publication number
WO2023078394A1
WO2023078394A1 PCT/CN2022/129888 CN2022129888W WO2023078394A1 WO 2023078394 A1 WO2023078394 A1 WO 2023078394A1 CN 2022129888 W CN2022129888 W CN 2022129888W WO 2023078394 A1 WO2023078394 A1 WO 2023078394A1
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WIPO (PCT)
Prior art keywords
csi
resource
indication
terminal
information
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PCT/CN2022/129888
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English (en)
Chinese (zh)
Inventor
马小骏
罗超
刘仁茂
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夏普株式会社
马小骏
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Publication of WO2023078394A1 publication Critical patent/WO2023078394A1/fr

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    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the technical field of wireless communication, and in particular to a method executed by user equipment and corresponding user equipment.
  • the present invention provides a method executed by user equipment and the user equipment.
  • the user equipment obtains the availability of the reference signal configured in the network through the indication message.
  • the reception of the reference signal by the terminal enables the terminal to further obtain accurate measurement or parameter estimation, more sleep time or better signal reception capability, etc., so that the terminal obtains benefits such as reduced power consumption and improved receiving ability, and improves the network performance.
  • a method performed by a user equipment UE including: obtaining first configuration information, the first configuration information is CSI-RS resource configuration information for idle or inactive users; obtaining a second indication information, the second indication information is information indicating the availability of at least one CSI-RS resource; and determining the correspondence between the CSI-RS resource corresponding to the first configuration information and the indication information bits in the second indication information, according to the second indication Bits in the information determine availability of CSI-RS resources corresponding to the first configuration information.
  • determining the correspondence between the CSI-RS resources and the indication information bits in the second indication information is as follows: determining the indication set sequence number according to the CSI-RS resource configuration information in the first configuration information; determining the indication set number according to the indication set number Two bits used to indicate availability of the CSI-RS resource in the indication information.
  • the indication set number is at least one of the order of the system configuration message, the indication set identifier corresponding to the CSI-RS resource, and the reference signal number used by the CSI-RS resource according to the resource set configuration information corresponding to the CSI-RS resource generate.
  • the quasi-co-located QCL of the CSI-RS resource is used to refer to the SSB sequence number to generate the low-order bits of the indication set number; and the indication set identifier corresponding to the CSI-RS resource is used to generate the high-order bits of the indication set number.
  • the order in the resource set configuration information using the same QCL reference SSB number in the system message is determined to determine the indication set number used by the CSI-RS resource.
  • another way to determine the corresponding relationship between the CSI-RS resources and the bits in the second indication information is to determine the indication bits of the CSI-RS resources according to the position of the transmission opportunity of the CSI-RS resources corresponding to the first configuration information. Two indicates the serial number of the bit in the message.
  • the sequence number of the indication bit of the CSI-RS resource in the second indication information can be determined according to the symbol of the PDCCH channel where the second indication signaling is located as a reference position.
  • the sequence number of the indication bit of the CSI-RS resource in the second indication information can be determined for the reference position according to the CSI-RS transmission opportunity having the same QCL reference signal as the second indication signaling.
  • the bit number of the indication bit of the CSI-RS resource in the second indication information may be determined for the reference position according to the paging detection opportunity associated with the second indication signaling.
  • a user equipment including: a processor; and a memory storing instructions, wherein the instructions execute the above method when executed by the processor.
  • the terminal by receiving the reference signal, the terminal can further obtain accurate measurement or parameter estimation, more sleep time or better signal receiving ability, etc., so that the terminal can obtain benefits such as reduced power consumption and improved receiving ability,
  • the service capability of the network is improved, the compatibility of the network is expanded, and the cost of communication network deployment is greatly reduced.
  • Fig. 1 is a flowchart illustrating a method performed by a user equipment according to an embodiment of the present invention.
  • Fig. 2 is a flowchart illustrating a method performed by a user equipment according to an embodiment of the present invention.
  • Fig. 3 is a schematic diagram illustrating determining availability of indicated CSI-RS resources by indication signaling according to an embodiment of the present invention.
  • Fig. 4 is a schematic diagram showing that when there are multiple PDCCH detection opportunities on one paging detection opportunity, the terminal determines the availability of CSI-RS resources respectively according to the positions of the detection opportunities where the indication information is located.
  • Fig. 5 is a schematic diagram illustrating determining the availability of multiple CSI-RS resources in the CSI-RS resource set according to the transmission opportunity of the first CSI-RS resource in the CSI-RS resource set.
  • FIG. 6 is a schematic diagram showing that a CSI-RS transmission opportunity having the same reference signal as a PDCCH indicating available signaling is used as a reference position.
  • Fig. 7 is a block diagram schematically showing a user equipment involved in the present invention.
  • the 5G/NR mobile communication system and its subsequent evolution versions are taken as an example application environment, and multiple implementations according to the present invention are described in detail.
  • the present invention is not limited to the following embodiments, but is applicable to more other wireless communication systems, such as communication systems after 5G and 4G mobile communication systems before 5G, 802.11 wireless networks, etc.
  • the terms involved in the present invention are described below, and the terms involved in the present invention are defined here unless otherwise specified.
  • the terms given by the present invention may adopt different naming methods in LTE, LTE-Advanced, LTE-Advanced Pro, NR and subsequent or other communication systems, but the present invention adopts a unified term, and when applied to a specific system When in , it can be replaced by the term used in the corresponding system.
  • 3GPP 3rd Generation Partnership Project
  • the third generation partnership project the third generation partnership project
  • LTE Long Term Evolution, long-term evolution technology
  • UE User Equipment, user equipment
  • gNB NR base station
  • FR1 Frequency range 1 as defined in TS 38.104, frequency range 1 defined by TS38.104
  • FR2 Frequency range 2 as defined in TS 38.104, frequency range 2 defined by TS38.104
  • BWP BandWidth Part, bandwidth fragment/part
  • SFN System frame number, system frame number
  • OFDM Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing
  • CP Cyclic Prefix, cyclic prefix
  • SCS sub-carrier spacing, subcarrier spacing
  • RB Resource Block, resource block
  • CRB Common Resource Block, public resource block
  • PRB Physical Resource Block, physical resource block
  • VRB Virtual resource block, virtual resource block
  • EPRE Energy per resource element, energy per resource unit
  • TDD Time Division Duplexing, Time Division Duplex
  • FDD Frequency Division Duplexing, Frequency Division Duplex
  • CSI Channel State Information, channel state information
  • DCI Downlink Control Information, downlink control information
  • MCS Modulation and Coding Scheme
  • SRS Sounding Reference Signal, sounding reference signal
  • DMRS Demodulation Reference Signal, demodulation reference signal
  • CSI-RS Channel State Information Reference Signal, channel state information reference signal
  • TRS Tracking Reference Signal, tracking reference signal
  • CRC Cyclic Redundancy Check, Cyclic Redundancy Check
  • SIB system information block, system information block
  • SIB1 System Information Block Type 1, system information block type 1
  • PSS Primary Synchronization Signal, primary synchronization signal
  • SSS Secondary Synchronization Signal, secondary synchronization signal
  • MIB Master Information Block, master information block
  • SSB Synchronization Signal Block, Synchronization System Information Block
  • CORESET Control resource set, control resource collection
  • RACH random-access channel, random access channel
  • PBCH Physical broadcast channel, physical broadcast channel
  • PUCCH Physical Uplink Control Channel, physical uplink control channel
  • PUSCH Physical Uplink Shared Channel, physical uplink shared channel
  • PRACH Physical random-access channel, physical random access channel
  • PDSCH Physical downlink shared channel, physical downlink shared channel
  • PDCCH Physical downlink control channel, physical downlink control channel
  • UL-SCH Uplink Shared Channel, uplink shared channel
  • DL-SCH Downlink Shared Channel, Uplink Shared Channel
  • NZP-CSI-RS Not-Zero-Power CSI-RS, non-zero power CSI-RS
  • C-RNTI Cell Radio Network Temporary Identifier, cell radio network temporary identifier
  • P-RNTI Paging RNTI, paging wireless network temporary identifier
  • RA-RNTI Random Access RNTI, random access wireless network temporary identifier
  • CS-RNTI Configured Scheduling RNTI, configure scheduling wireless network temporary identifier
  • SI-RNTI System Information RNTI, System Information Wireless Network Temporary Identification
  • TC-RNTI Temporary C-RNTI, temporary cell wireless network temporary identifier
  • a network device is a device for communicating with a terminal, including but not limited to a base station device, gNB, eNB, wireless AP, etc., which will not be specifically distinguished and limited in the following.
  • the base station can also be used as a form of network equipment for description, and other network equipment forms can be easily used for replacement during specific implementation.
  • a unit of time-frequency resources in NR is a time slot.
  • a time slot can contain 14 (Normal CP scenario) or 12 (Extended CP scenario) OFDM symbols.
  • Multiple slots can be composed into subframes and radio frames.
  • One radio frame uses a length of 10 milliseconds.
  • a radio frame may consist of several time slots, for example, 10 time slots when the subcarrier spacing is 15 kHz.
  • the terminal can determine the position of the time slot according to parameters such as the frame number SFN of the radio frame and the sequence number of the time slot in the radio frame.
  • the terminal can also determine the position of the symbol for signal transmission in the time domain according to the serial number of the symbol in the time slot.
  • Resources in NR can be identified using resource blocks and resource units.
  • the resource block RB can be defined in the frequency domain as consecutive subcarriers, for example, for a subcarrier spacing (SCS) of 15kHz, one RB is 180kHz in the frequency domain.
  • the resource element RE can determine a unit on the time-frequency grid, which represents one subcarrier in the frequency domain and represents one OFDM symbol in the time domain.
  • a typical subcarrier spacing uses 15kHz ⁇ 2 ⁇ , where ⁇ can take an integer value.
  • the CSI-RS reference signal can be configured for the terminal to perform functions such as channel measurement and beam management.
  • CSI-RS signal parameters can be configured to the terminal in the form of CSI-RS resources, and one terminal can be configured with one or more CSI-RS resources.
  • One or more CSI-RSs can also form a CSI-RS resource set, and one terminal can be configured with one or more resource sets.
  • Each CSI-RS resource defines a CSI-RS signal, including multiple configuration parameters, such as time domain period and offset configuration, frequency domain position and bandwidth configuration, power configuration, code division parameter configuration, QCL configuration, frequency domain density parameter , subcarrier positions...etc.
  • the CSI-RS signal is transmitted on a determined time-frequency resource.
  • the network can configure the period T CSI- RS and offset T offset of the periodic CSI-RS signal, and the terminal can determine the time slot position for CSI-RS transmission according to the configuration parameters. For example, the terminal determines that the radio frame and the slot number satisfy radio frame n f and time slot The frame number and slot number sent for the CSI-RS signal.
  • the terminal can also determine the symbol sequence number used by the CSI-RS on the time slot according to the configuration parameters, then the terminal can determine several time slots and symbol positions for CSI-RS signal transmission.
  • the terminal can determine the starting position and bandwidth of the CSI-RS in the frequency domain according to the configuration.
  • the network can configure the frequency domain density and frequency domain allocation parameters of the CSI-RS, and the terminal can determine which REs the CSI-RS occupies on the RB for transmission according to the configuration. According to different configuration parameters, the CSI-RS can use some REs in the RB in the frequency domain. For example, if the frequency domain density parameter used by CSI-RS is 3, then among the 12 REs determined by one symbol and one RB, 3 REs are used for the transmission of CSI-RS signals, and the remaining REs are not used for the transmission of CSI-RS signals. transmission.
  • the number of REs used by the CSI-RS signal on the RB can be determined by configuration parameters, for example, a 4-bit bitmap is used to determine which of the 4 REs are used for the transmission of the CSI-RS signal. Ordinal numbers can also be used, for example, 0 starts from the first RE, 1 starts from the second RE, and so on.
  • the network can also configure several other parameters, and the terminal can determine the characteristics of the CSI-RS signal according to the relevant configuration, and use it for related reception or measurement.
  • the terminal can determine several time-frequency positions corresponding to one CSI-RS resource according to relevant parameters, and there are transmissions of related CSI-RS signals at these time-frequency positions, which can be called several transmission opportunities of CSI-RS.
  • the terminal can receive CSI-RS signals on these transmission opportunities for measurement or signal reception and the like.
  • the CSI-RS can be divided into various types, for example, the NZP-CSI-RS is a CSI-RS with non-zero power, that is, the transmission power of the CSI-RS is not zero.
  • CSI-RS can also be divided into periodic, semi-permanent and non-periodic signal types.
  • the periodic CSI-RS means that after the configuration takes effect, the associated CSI-RS resource appears repeatedly on the time-frequency resource at a certain period.
  • the semi-permanent and aperiodic CSI-RS resources need to be activated through MAC-CE or DCI indication.
  • the terminal can implement different functions according to different CSI-RS resources and related report indications.
  • the CSI-RS signal used for time-frequency tracking (Tracking) may also be called TRS.
  • TRS time-frequency tracking
  • CSI-RS is uniformly used as a synonym for CSI-RS of different types or parameters applicable to the present invention, or other signals that can realize similar functions.
  • the network sends the SSB signal at a certain period, and the SSB can include various synchronization signals, such as SSS and PSS.
  • the network can use spatial filters (also known as beams) for signal transmission and reception.
  • the beams used in the network may be analog beams or digital beams or a mixture of the two.
  • the network can use beams to send SSBs. For example, the network uses 8 beams to send SSBs, then the SSBs in the sending cycle can be numbered as SSB0 to SSB7, which respectively represent the SSBs sent using the corresponding beams.
  • the terminal can select the best beam for signal reception or transmission according to different locations, so as to achieve better communication effect.
  • the QCL parameter is used in the network to characterize the spatial relationship between different signals, that is to say, two signals satisfying the QCL relationship have a certain spatial channel correlation. For example, if the network configures two signals to satisfy a certain QCL type relationship, the terminal can use the same parameter when processing the two signals, or the parameter obtained from one signal can be applied to the receiving or sending of the other signal. For example, if the QCL type of the two signals is QCL-typeA, parameters such as Doppler frequency shift, Doppler spread, average delay, and delay spread obtained from one signal can be applied to the other signal, or these parameters can be shared.
  • the QCL type of two signals is QCL-typeC
  • parameters such as Doppler frequency shift and delay spread parameters of one signal can be obtained from one signal.
  • the QCL type is QCL-typeD
  • the parameter information of a signal beam can be obtained from a signal.
  • QCL types There may be other QCL types, which can be identified by the user according to the relevant parameters when applying. Users can also apply related parameters between more signals that satisfy the QCL relationship, and the specific process will not be described one by one.
  • the CSI-RS signal sent by the network device may be sent using a beam, and a reference signal may be configured for the CSI-RS in the network as a signal satisfying a QCL relationship with it.
  • the network can configure SSB i as a reference signal that satisfies a certain QCL type of a CSI-RS signal, and the terminal can consider that SSB i is the same as certain channel parameters of the CSI-RS, such as spatial signal parameters, Doppler frequency shift parameters etc. If there are other signals and SSB i on the terminal side that meet the QCL, the terminal can also obtain relevant parameters through the reception or measurement of the CSI-RS, and apply them to the reception of the signal.
  • the network can send the DCI message to the terminal through the PDCCH channel.
  • the terminal can determine a series of time-frequency resources and other parameters according to the configuration of the PDCCH, and the terminal performs DCI detection on the determined resources.
  • the terminal When the terminal correctly detects the DCI message, it can perform related actions according to the content indicated by the DCI.
  • the PDCCH is sent using a beam, and the network can configure the DM-RS port of the PDCCH to meet the reference signal of the QCL relationship, for example, configure a certain SSB as the QCL reference signal of the PDCCH.
  • the terminal may also determine the default QCL reference signal of the PDCCH according to the configuration of the PDCCH, for example, determine a certain SSB as its reference signal according to the position of the time-frequency resource.
  • the configuration parameters of the PDCCH channel include search space set parameters, CORESET parameters, and the like.
  • the terminal can detect the PDCCH candidate set on the related search space set and the resources determined by the CORESET according to the configuration, which is called a PDCCH detection opportunity.
  • the terminal can receive the PDCCH according to the spatial filter parameters of the QCL reference signal of the PDCCH on the PDCCH detection opportunity, and detect whether the related DCI is received correctly.
  • the terminal in the network can be divided into different states, such as connected (connected) state, idle (idle) state, and inactive (inactive) state.
  • a user in the connected state establishes a wireless link connection with the network for data transmission or related business processing.
  • the terminal in the idle state or the inactive state also maintains a certain connection with the network. For example, the terminal needs to monitor broadcast messages and paging messages sent by the network according to relevant configurations or parameters, or perform related measurements.
  • the behaviors of users in the idle state and the inactive state are handled similarly in many aspects in the present invention.
  • the relevant actions for the terminal in the idle state can also be applied to Inactive terminal. If there are other user states similar to the idle state in the network, they can also be handled by analogy, and details will not be given one by one.
  • the terminal can be in a sleep state to save power consumption.
  • the terminal can be in different sleep modes. For example, enter the light sleep mode, which is used for a short sleep when there are new signals to be processed in a short period of time.
  • the deep sleep mode which is used when the terminal has no new signal to process for a long period of time, and the power consumption of the terminal can be reduced more than in the light sleep mode.
  • putting the terminal in the sleep mode can effectively reduce the power consumption of the terminal, thereby improving user experience.
  • the terminal can adjust the parameters of automatic gain control (AGC), so that the received signal can be adjusted within an appropriate dynamic range to obtain a better receiving effect.
  • AGC automatic gain control
  • the terminal needs to perform time-frequency tracking, and estimate the time-offset or frequency-offset parameters of the signal according to the reference signal, so that the time-frequency parameters are consistent with the base station or can obtain accurate channel parameters, etc., so that the signal or data to be processed can be correspondingly correction to obtain better reception performance.
  • the terminal may also perform some other processing to optimize data processing, improve user experience, etc., which will not be described here.
  • the network can configure and send reference signals to the terminal for channel measurement, channel parameter estimation, mobility assessment, spatial parameter estimation, etc.
  • the terminal may receive the synchronization reference signal sent by the network, and perform AGC adjustment or time-frequency parameter estimation.
  • the terminal may receive the CSI-RS signal sent by the network to perform channel measurement or beam management.
  • a terminal in an idle state or an inactive state needs to periodically receive broadcast or paging information in the network, or perform related measurements.
  • the terminal Before receiving paging information, the terminal can receive the reference signal sent by the network according to its own capabilities, channel conditions and other factors, perform AGC, time-frequency tracking and other processing, and receive the corresponding data signal, so as to obtain good results. Due to various internal or external factors, the number of times or the duration of waking up from the sleep mode is different when the terminal performs these preprocessing. For example, when the channel condition is poor, the reception quality of the relevant reference signal is poor, or when the processing capability of the terminal is limited, the terminal needs to wake up multiple times and receive multiple reference signals to achieve better reception effect. For another example, the configured reference signal is far from the signal to be received, and the terminal may also need to receive the reference signal more times or maintain a longer active time to obtain a better receiving effect.
  • a user terminal in an idle state or an inactive state can use the synchronization signal in the SSB to implement related AGC or time-frequency parameter estimation.
  • the period and time-frequency position of SSB are often fixed, which may not meet the requirements of different users to receive signals and reduce power consumption. Therefore, the network can provide additional reference signals for terminal reception, so that the terminal can obtain the required parameters faster. or information, thereby reducing the time or frequency of wake-ups to achieve better energy-saving effects.
  • the network can configure the CSI-RS signal to be used as a reference signal for idle or inactive users. For example, the network configures several periodic CSI-RS signals with non-zero power in the system broadcast information, which are used as reference signals for idle or inactive users.
  • the network may use the CSI-RS signal sent to the users in the connected state to share it with the users in the idle state. If the connected user no longer uses these resources, the network can partially or completely turn off these CSI-RS signals according to different situations, so as to reduce power consumption on the network side.
  • the terminal can determine one or more CSI-RS resources and corresponding transmission opportunities according to the configuration of the network. Whether to actually send CSI-RS signals on these CSI-RS transmission opportunities can be controlled by the network. For example, the network device may adjust the sending CSI-RS configuration, enable or stop part of the signal transmission, etc. according to the adjustment of the user in the connected state or the saving of network power consumption or other reasons. The state user can correctly receive the CSI-RS signal. The network device may send indication information to indicate the availability status of the configured CSI-RS resources in one or several transmission opportunities. When a CSI-RS transmission opportunity is indicated as available, the terminal can receive the signal on the transmission opportunity, so as to save power consumption by using the signal.
  • the indication signal may indicate the availability of one CSI-RS transmission opportunity, or the availability of several CSI-RS transmission opportunities over a period of time, for example, the availability of CSI-RS transmission opportunities on several paging cycles starting from a certain starting point availability.
  • the terminal may determine the effective range of the availability indication according to the characteristic of the indication signal or other relevant configurations, which is not specifically limited herein.
  • the relevant action of indicating the availability of CSI-RS signals on one or several transmission opportunities may also be simply referred to as indicating the availability or unavailability of CSI-RS signals or the availability or unavailability of CSI-RS resources. These descriptions can be understood as indicating whether to transmit CSI-RS signals on one or several transmission opportunities determined by the corresponding CSI-RS resources.
  • the network may indicate the available or unavailable status of the CSI-RS transmission opportunity through physical layer signaling. For example, it is indicated by some bits of DCI.
  • the terminal needs to determine the corresponding relationship between the bits in the received DCI and the CSI-RS resources configured by the network, so as to determine the state of the CSI-RS signal on the corresponding transmission opportunity.
  • it is necessary to consider the overhead of configuring signaling. For example, in NR, the maximum capacity of a system message is 2976 bits. If the number of bits used to configure the relevant parameters of CSI-RS resources is greater than this capacity, it may be necessary to use multiple system messages for transmission, which will cause system The increase in complexity increases the power consumption of base stations and terminals.
  • the terminal can obtain the position of the indication bit corresponding to the CSI-RS resource in the physical layer availability indication information through the network configuration information, so that the CSI-RS signal can be determined on one or more transmission opportunities according to the indicated bit information availability.
  • the configuration parameters in the system use less signaling overhead, so as to obtain better system performance.
  • Fig. 1 is a flowchart illustrating a method performed by a user equipment according to an embodiment of the present invention.
  • the terminal receives first configuration information, and the first indication information indicates the CSI-RS resource configuration configured in the network for use by users in an idle state or an inactive state.
  • step 102 second indication information is received, where the indication information indicates the availability of at least one CSI-RS resource used by users in an idle state or an inactive state.
  • step 103 the indication set number of the CSI-RS resource in the first configuration is determined, and the availability of the CSI-RS resource is determined according to the indication set number in the second indication information.
  • the availability of CSI-RS resources can be indicated through physical layer signaling. For example, indicated by some bit fields in the paging DCI; or indicated by bit fields in the paging advance indication information; it is also possible to indicate by using bit fields in other physical layer signaling.
  • the paging DCI is taken as an example for introduction.
  • Several bits in the paging DCI can be used for availability indication information, for example, in a cell using a non-shared frequency spectrum, there are 6 reserved bits in the paging DCI. In the cell using the shared frequency spectrum, there are 8 reserved bits in the paging DCI. These bits are not used by terminals of R16 and earlier versions, so they can be used to indicate the availability of CSI-RS resources.
  • the bit in the paging DCI can be used to indicate the availability of the CSI-RS.
  • the terminal may also indicate the availability of the CSI-RS according to bits in other physical layer signaling, which will not be described in detail here.
  • CSI-RS resources or resource sets can be configured in the network for reception by idle or inactive terminals.
  • the terminal needs to determine the availability of which resource or resource set is indicated by the availability indication bit in the received DCI, so as to receive the signal correctly.
  • the terminal determines the correspondence between the indication bits in the DCI and the CSI-RS resource set according to the indication set sequence number.
  • a CSI-RS resource set includes one or more CSI-RS resources. The availability of these CSI-RS resources can be determined according to the index set sequence number used by the resource set.
  • the indication set can be understood as a set of CSI-RS resources corresponding to the same indication bit in the indication information.
  • An indication set may include one or more CSI-RS resource sets, and these resource sets use the same indication bit to determine the transmission status of related signals on transmission opportunities.
  • the indication information of one DCI may indicate the availability of multiple indication sets, for example, in the form of a bitmap, and each bit corresponds to the indication information of an indication set. At this time, each bit corresponds to a sequence number of an indication set, and the terminal can determine the availability of the CSI-RS resources indicated by the indication bits in the DCI according to the correspondence between the sequence number of the indication set and the indication bits in the DCI.
  • an indication field of N bits is used in the paging DCI, each bit corresponds to an indication set number, for example, the first bit corresponds to the indication set number 0, the second bit corresponds to the indication set number 1, etc. .
  • the terminal determines the relevant CSI-RS resource according to the indicated set number, and determines the availability of the relevant CSI-RS resource according to the indicated bit information. For example, bit 1 is used to indicate that transmission opportunities of relevant CSI-RS resources are available for a period of time, and the terminal can receive CSI-RS signals on these transmission opportunities.
  • the terminal determines the correspondence between CSI-RS resources and indication information bits according to the indication set sequence number configured for each CSI-RS resource set.
  • the indication set sequence number corresponds to the indication bit in the indication bit field of the DCI, then the terminal can determine the availability of the CSI-RS resource in the relevant CSI-RS resource set according to the indication bit.
  • the terminal determines the indication set sequence number according to the QCL reference signal used by the CSI-RS resource. For example, all the CSI-RS resources in a CSI-RS resource set use a certain SSB sequence number as the QCL reference signal, and the terminal obtains the indication set sequence number or sequence number corresponding to the CSI-RS resource in a CSI-RS resource set according to the SSB sequence number part.
  • the network device can indicate the parameters sent by the SSB through the SIB or RRC message.
  • the network uses the ssb-PositionsInBurst information element in SIB1 to indicate the sequence number of the SSB actually sent.
  • ssb-PositionsInBurst may further include multiple parameters.
  • the network indicates the sending status of all SSBs or each SSB in each SSB group through the inOneGroup parameter (intra-group identification parameter).
  • intra-group identification parameter When the maximum number of SSBs in each half frame is 4, 4 effective bits are used to indicate the transmission status of each SSB. When the maximum number of SSBs in each half frame is 8, 8 bits are used to indicate the transmission status of SSBs.
  • the leftmost bit of the inOneGroup parameter corresponds to the sequence number of the SSB being 0.
  • the leftmost bit in inOneGroup corresponds to the first SSB number in each group, that is, the corresponding SSB numbers are 0, 8, 16, etc., and so on for other bits. Setting each bit in inOneGroup to 0 indicates that the corresponding SSB is not actually sent, and setting the bit to 1 indicates that the SSB corresponding to the relevant sequence number is sent.
  • the network When the maximum number of SSBs in a half frame is greater than 8, such as 64, the network also sends whether each antenna group exists through an 8-bit groupPresence parameter (group presence parameter).
  • groupPresence group presence parameter
  • the leftmost bit of groupPresence is associated with SSB numbers 0-7, the second bit is associated with SSB numbers 8-15, and so on.
  • a bit in groupPresence is set to 0, indicating that the SSB sequence number corresponding to this bit does not exist, or that the group of SSBs is not actually transmitted.
  • a bit in groupPresence is set to 1, indicating that the 8 SSBs corresponding to this bit are transmitted or not transmitted according to the bit status indicated in inOneGroup.
  • the network can indicate all actually sent SSB sequence numbers in half-frames in various scenarios.
  • the network can also indicate the SSB sequence numbers actually sent in the system in other ways, for example, when the maximum number of SSBs in a half-frame is 64, a 64-bit bitmap is used to indicate the transmission status of all SSBs in a half-frame.
  • the terminal can obtain the SSB actually transmitted in the half frame through network configuration.
  • the terminal can obtain the information of the SSB actually transmitted in each period according to the period parameter of the SSB.
  • the terminal determines the indication set sequence number according to the sequence number of the QCL reference SSB used by the CSI-RS resource.
  • the terminal uses the QCL reference SSB sequence number used by the CSI-RS resource as the indication set sequence number corresponding to the CSI-RS resource.
  • the terminal uses the sequence number of the actually transmitted SSB sequence number indicated in the system message as the indicated set sequence number.
  • the inOneGroup parameter configured in the network is 11001111, which indicates the SSB actually transmitted in the network.
  • the terminal can determine that the actually transmitted SSB numbers are 0, 1, 4, 5, 6, and 7 respectively.
  • the terminal determines that the indication set numbers corresponding to the CSI-RS resources using SSB numbers 0, 1, 4, 5, 6, and 7 as reference signals are 0, 1, 2, 3, 4, and 5, respectively.
  • the terminal when the cell uses the FR2 frequency band, or the maximum number of SSBs in the cell is greater than 8, the terminal refers to the sequence number of the SSB sequence number in inOneGroup according to the QCL used by the CSI-RS resource as the indication set sequence number corresponding to the CSI-RS resource.
  • the terminal uses the sequence number of the actually transmitted SSB sequence number indicated in the system message as the indicated set sequence number.
  • the terminal According to the QCL reference SSB sequence number used by the CSI-RS resource, the terminal indicates the sequence number of the actually transmitted SSB sequence number in inOneGroup as the indicated set sequence number.
  • the inOneGroup parameter For example, configure the inOneGroup parameter to be 11001111 and the groupPresence parameter to be 110000 in the network, indicating the SSB actually transmitted in the network.
  • the terminal can determine that the actually transmitted SSB numbers are 0, 8; 1, 9; 4, 12; 5, 13; 6, 14; 7, 15.
  • the terminal determines that the indication set number corresponding to the CSI-RS resource using the SSB number 0 and 8 as the reference signal is 0.
  • the indication set number corresponding to the CSI-RS resource using SSB numbers 1 and 9 as reference signals is 1.
  • the indication set numbers corresponding to the CSI-RS resources using SSB numbers 4 and 12 as reference signals are 2, and so on.
  • the terminal indicates the set sequence number according to the indicated set identifier of the CSI-RS resource set and the used QCL reference SSB sequence number.
  • the network configures several CSI-RS resources through the CSI-RS resource set, and these CSI-RS resources use the same QCL reference signal.
  • the network configures the indicator set identifier for the CSI-RS resource set, and the terminal generates the indicator set sequence number corresponding to the CSI-RS resource in the CSI-RS resource set according to the indicator set identifier and the SSB sequence number.
  • the terminal generates the lower bits of the indication set number according to the reference SSB number used by the CSI-RS resource, and generates the upper bits of the indication set number according to the indication set identifier.
  • DCI uses an indication field with a maximum of 6 bits to indicate the availability of several CSI-RS resources, then the corresponding indication set number is an integer value of 0-5, which can be represented by 3 binary bits [xyz] respectively, As shown in Table 1
  • mod is a modulo operation.
  • the terminal determines the upper bits [xy] according to the indication set identifier.
  • the terminal may determine that the sequence number of the indication set of the CSI-RS resources in the resource set is the sequence number indicated by [xyz].
  • one optional bit can be used as the upper bit of the indication set identifier indicating the use of the CSI-RS resource set.
  • the CSI-RS resource set uses a default high-order bit of the indication set sequence number to be 00.
  • the terminal determines that the high-order bit of the indicated set number is 01, and when the optional bit indicated is 1, the terminal determines that the high-order bit of the indicated set number is 10.
  • the terminal can determine the indication set number used by the resource set according to the indication bit and the SSB number of each resource set, so that the availability of the CSI-RS resource can be determined according to the availability indication bit in the received DCI.
  • the meanings represented by high-order bits, low-order bits, and bit 0/1 described in the above embodiments may be exchanged during implementation to achieve the same indication purpose, and will not be described here one by one.
  • the terminal determines the indication set sequence number according to the configuration order of the CSI-RS resources in the system message.
  • the network configures the CSI-RS resources in the system message, it configures them according to the order in which the parameters of each resource set are arranged.
  • the terminal may determine the sequence number of the indication set used by the CSI-RS resource according to the order in the system message of the resource set configuration parameters corresponding to the CSI-RS resource indicating availability by using physical layer signaling. For example, some bits of the sequence number of the configuration sequence are used to indicate the sequence number of the set. Or as an indication set ID.
  • the terminal determines the indication set number of the CSI-RS resource according to the configuration sequence of the CSI-RS resource in the system message and the QCL reference signal used by the CSI-RS resource. For example, the terminal determines the indicated set sequence number used by the CSI-RS resource according to the sequence in the resource set configuration information corresponding to the CSI-RS resource using the same QCL reference SSB sequence number in the system message. For example, according to the configuration order of the resource sets in the system message, the terminals that use SSB x as the QCL reference signal are [CSI-RS resource set a, CSI-RS resource set b, CSI-RS resource set c, ...
  • the terminal uses SSB0 as the resource set corresponding to the CSI-RS of the QCL reference signal in order of configuration [CSI-RS resource set 0, CSI-RS resource set 0, CSI- RS resource set 4, CSI-RS resource set 8], then the corresponding terminal determines that the instruction set number for the use of the CSI-RS resource in CSI-RS resource set 0 is 0, and the CSI-RS resource in CSI-RS resource set 4
  • the index set number of resource usage is 1, and the index set number of CSI-RS resource usage in CSI-RS resource set 8 is 2.
  • the resource sets corresponding to the CSI-RS using SSB3 as the QCL reference signal are [CSI-RS resource set 2, CSI-RS resource set 6] in the order of configuration, then the CSI in the corresponding CSI-RS resource set 2 -
  • the indication set number of the usage of the RS resources is 0, and the indication set number of the usage of the CSI-RS resources in the CSI-RS resource set 6 is 1.
  • the terminal can determine the corresponding indication set sequence numbers of all configured CSI-RS resources.
  • the terminal can determine the availability of the CSI-RS resource according to the availability indication in the DCI. For example, when using the paging DCI to indicate the availability, the terminal can determine the indicated CSI-RS resources according to the indication information in several paging cycles starting from the next paging cycle in which the current paging DCI is received or by default Whether there is actual CSI-RS transmission on the CSI-RS transmission opportunity in the paging cycle period. Or when using the paging advance indication DCI to indicate availability, the terminal can determine according to the indication information whether the indicated CSI-RS resource has an actual CSI-RS transmission opportunity in the time slot before the paging opportunity corresponding to the advance indication information. CSI-RS transmission.
  • Fig. 2 is a flowchart illustrating a method performed by a user equipment according to another embodiment of the present invention.
  • step 201 the terminal receives first configuration information, and determines CSI-RS resources and their transmission opportunities in the time domain.
  • the terminal receives second indication information, where the indication information indicates the availability of at least one CSI-RS resource used by users in an idle state or an inactive state.
  • step 203 the terminal determines the corresponding indication bit in the second indication information according to the position of the CSI-RS transmission opportunity, and determines the availability of the CSI-RS resource.
  • the base station can configure several CSI-RS resources or resource sets through high-layer signaling for reception by idle or inactive users.
  • the terminal can determine the transmission of the CSI-RS signal on the transmission opportunity according to these CSI-RS resource configurations and related availability indications, and receive related signals.
  • the availability of CSI-RS resources can be indicated through physical layer signaling. For example, it is indicated by some bit fields in the paging DCI; or, it is indicated by the bit fields in the paging advance indication information; it is also possible to use the bit field indications in other physical layer signaling.
  • the paging DCI is taken as an example Make an introduction.
  • There are several bits in the paging DCI that can be used for the indication information for example, in a cell that uses a non-shared frequency spectrum, there are 6 reserved bits in the paging DCI. In the cell using the shared frequency spectrum, there are 8 reserved bits in the paging DCI.
  • bits are not used by terminals of R16 and earlier versions, so they can be used to indicate the availability of CSI-RS.
  • CSI-RS resources or resource sets may be configured in the network, and use the same or different SSBs as their reference signals to serve different terminals in the cell.
  • the terminal receives the availability indication information sent by the physical layer signaling, which may include indications of multiple CSI-RS resources.
  • the terminal needs to determine the availability of which resources or sets of resources are indicated by the bits therein.
  • the terminal determines the availability of the corresponding CSI-RS resources of several transmission opportunities in the time domain according to the availability indication information.
  • These CSI-RS resources may use the same or different SSB numbers as reference signals.
  • the terminal needs to determine how many bits in the received indication signaling are used to indicate the availability of CSI-RS resources, that is, to determine the capacity of the indication.
  • the terminal determines the capacity of the usability indication corresponding to the bit indication according to the smaller value of the maximum number of bits available for the usability indication in the DCI and the number of CSI-RS resource sets in the system configuration. For example, a maximum of 6 bits in DCI can be used to indicate the availability of CSI-RS resources.
  • Four CSI-RS resource sets are configured in the system message, and the terminal determines that the capacity of the indication information is 4, and uses 4 bits to indicate the availability of relevant CSI-RS resources.
  • the terminal determines the availability of the CSI-RS resource set according to the location of the transmission opportunity of the CSI-RS resource.
  • the terminal determines the indication bit of the CSI-RS resource in the indication information according to the sequence number of the CSI-RS transmission opportunity before the reference position, and determines the availability of the CSI-RS resource according to the indication bit.
  • the sequence number determined by a certain CSI-RS exceeds the capacity of one indication information, the availability information of the CSI-RS is not indicated in the indication information.
  • the terminal can determine several opportunities for the transmission of the CSI-RS signal in the time domain; correspondingly, the terminal can also determine the corresponding CSI-RS signal transmission opportunities according to the CSI-RS transmission opportunities RS resources.
  • the terminal uses the PDCCH where the physical layer signaling indicating availability is located as a reference position, and the terminal determines the availability of the CSI-RS resource according to the positional relationship between the transmission opportunity of the CSI-RS resource and the physical layer signaling indicating availability.
  • the terminal when using the paging DCI as the physical layer signaling indicating the availability of CSI-RS resources, the terminal can determine the number of CSI-RS resources corresponding to the CSI-RS resources configured by the system message before the symbol of the PDCCH carrying the paging DCI. CSI-RS transmission opportunities.
  • the terminal determines, according to the capacity N of the indication signaling, that the bits in the indication signaling respectively indicate the availability of CSI-RS resources corresponding to the N transmission opportunities.
  • the symbol position of the PDCCH is the symbol position determined by the CORESET used to transmit the PDCCH.
  • the terminal can determine the 4 CSI-RS transmissions before the symbol of the PDCCH channel indicated by the availability signaling
  • the opportunity corresponds to the availability of CSI-RS resources.
  • the transmission opportunities determined by the terminal according to the reference positions are the transmission opportunities corresponding to CSI-RS resources 0/1/2/3, then the terminal determines the four CSI-RS resources in turn according to the indication bits in the indication information.
  • Availability over time For example, the terminal may determine availability of transmission opportunities corresponding to these CSI-RS resources in K consecutive paging cycles after receiving the paging opportunity where the paging DCI is located.
  • the terminal may have multiple paging PDCCH detection opportunities (monitoring occasion, MO) on one paging occasion (PO).
  • MO paging occasion
  • the terminal respectively determines the CSI-RS resource corresponding to the indicated bit in the relevant paging DCI according to the detected symbol position of the PDCCH on the MO.
  • An example is shown in FIG. 4 , the terminal has four paging DCI detection opportunities in one paging cycle paging opportunity, which are used for beam reception corresponding to different SSB numbers.
  • the terminal can select one or more PDCCHs for detection.
  • the terminal When the terminal receives the DCI carrying the CSI-RS resource availability indication information on a PDCCH detection opportunity, it can determine the availability of the CSI-RS resource related to the position of the PDCCH detection opportunity. As shown in the figure, when a DCI indicates the availability of up to 4 CSI-RS resources, the DCI detected on the first MO indicates CSI-RS 3/2/1/0, and the DCI detected on the second MO indicates CSI-RS 3/2/1/0. The detected DCI indicates CSI-RS 4/3/2/1, etc.
  • the CSI-RS resource can be configured in the form of a CSI-RS resource set in the system message.
  • the CSI-RS resource set may contain multiple CSI-RS resources, and each resource has several transmission opportunities in the time domain according to related configurations.
  • the terminal determines the availability of the CSI-RS resources in the CSI-RS resource set according to the location of the transmission opportunity of the first CSI-RS resource in the resource set.
  • the first CSI-RS resource is the first CSI-RS resource in one cycle in the CSI-RS resource set.
  • two CSI-RS resource sets respectively include 4 CSI-RS resources.
  • the terminal determines the availability of the CSI-RS resources in the CSI-RS resource set only according to the transmission opportunity position of the first CSI-RS resource among the resources of a certain CSI-RS resource set.
  • the terminal determines the availability of the CSI-RS resource corresponding to each bit in the indication signaling for the reference position according to the CSI-RS transmission opportunity having the same QCL reference signal as before the indication signaling.
  • the terminal can use the reference location and the availability of CSI-RS resources corresponding to several previous CSI-RS transmission opportunities.
  • the terminal may refer to the location and availability of CSI-RS resources corresponding to several subsequent CSI-RS transmission opportunities.
  • FIG. 6 the terminal determines the first transmission opportunity before the PDCCH using the same QCL reference signal CSI-RS resource according to the received QCL reference signal of the PDCCH channel where the availability indicator is located.
  • the terminal determines the availability of CSI-RS resources corresponding to the reference position and the previous several CSI-RS transmission opportunities by using it as the reference position.
  • the terminal uses it as a reference position to determine availability of CSI-RS resources corresponding to the reference position and subsequent CSI-RS transmission opportunities.
  • a paging early indication (PEI) DCI can be used in the network to indicate whether the terminal needs to detect the corresponding paging PDCCH in the corresponding paging opportunity. Therefore, the indication information of CSI-RS resource availability may also be carried in the paging advance indication DCI to indicate whether there is an available CSI-RS for the user to receive before the paging opportunity corresponding to the advance indication.
  • PEI paging early indication
  • the terminal uses the paging PDCCH detection opportunity using the same reference signal as the reference position according to the CSI-RS transmission opportunity and the paging opportunity corresponding to the advance indication Determine the availability of the CSI-RS resources indicated in the indication information.
  • the terminal determines the indication as the reference position according to the first paging PDCCH detection opportunity in the paging opportunity corresponding to the CSI-RS transmission opportunity and the advance indication Availability of CSI-RS resources indicated in the information.
  • FIG. 7 is used to illustrate a user equipment as a modified example that can execute the method performed by the user equipment described in detail above in the present invention.
  • FIG. 7 is a block diagram showing a user equipment UE according to the present invention.
  • the user equipment UE60 includes a processor 601 and a memory 602 .
  • the processor 601 may include, for example, a microprocessor, a microcontroller, an embedded processor, and the like.
  • Memory 602 may include, for example, volatile memory (such as random access memory RAM), hard disk drive (HDD), non-volatile memory (such as flash memory), or other memories.
  • Memory 602 has program instructions stored thereon. When the instructions are executed by the processor 601, the above method described in detail in the present invention and executed by the user equipment may be executed.
  • the method and related equipment of the present invention have been described above in conjunction with preferred embodiments. Those skilled in the art can understand that the methods shown above are only exemplary, and the embodiments described above can be combined with each other without conflicts.
  • the method of the present invention is not limited to the steps and sequence shown above.
  • the network node and user equipment shown above may include more modules, for example, may also include modules that can be developed or developed in the future and can be used for the base station, MME, or UE, and the like.
  • the various identifiers shown above are only exemplary rather than restrictive, and the present invention is not limited to specific information elements as examples of these identifiers. Numerous variations and modifications may be made by those skilled in the art in light of the teachings of the illustrated embodiments.
  • various components inside the base station and user equipment in the above embodiments can be implemented by various devices, including but not limited to: analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, programmable processing Devices, Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs), Programmable Logic Devices (CPLDs), etc.
  • DSP digital signal processing
  • ASICs Application Specific Integrated Circuits
  • FPGAs Field Programmable Gate Arrays
  • CPLDs Programmable Logic Devices
  • base station may refer to a mobile communication data and control switching center with relatively large transmission power and wide coverage area, including functions such as resource allocation and scheduling, data reception and transmission.
  • User equipment may refer to a user's mobile terminal, including, for example, a mobile phone, a notebook, and other terminal equipment capable of wirelessly communicating with a base station or a micro base station.
  • embodiments of the present invention disclosed herein may be implemented on a computer program product.
  • the computer program product is a product having a computer-readable medium encoded with computer program logic that, when executed on a computing device, provides associated operations to implement Above-mentioned technical scheme of the present invention.
  • the computer program logic When executed on at least one processor of a computing system, the computer program logic causes the processor to execute the operations (methods) described in the embodiments of the present invention.
  • Such arrangements of the invention are typically provided as software, code and/or other data structures arranged or encoded on a computer-readable medium such as an optical medium (e.g., CD-ROM), floppy disk, or hard disk, or as one or more other media of firmware or microcode on a ROM or RAM or PROM chip, or a downloadable software image in one or more modules, a shared database, etc.
  • Software or firmware or such configurations can be installed on the computing device, so that one or more processors in the computing device execute the technical solutions described in the embodiments of the present invention.
  • each functional module or each feature of the base station device and terminal device used in each of the above embodiments may be implemented or executed by a circuit, and the circuit is generally one or more integrated circuits.
  • Circuits designed to perform the various functions described in this specification may include general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs) or general-purpose integrated circuits, field-programmable gate arrays (FPGAs), or other possible Program logic devices, discrete gate or transistor logic, or discrete hardware components, or any combination of the above.
  • a general-purpose processor can be a microprocessor, or the processor can be an existing processor, controller, microcontroller, or state machine.
  • the general-purpose processor or each circuit described above may be configured by a digital circuit, or may be configured by a logic circuit.
  • the present invention can also use an integrated circuit obtained by using the advanced technology.

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

Abstract

La présente invention concerne un procédé exécuté par un équipement utilisateur, ainsi qu'un équipement utilisateur. Le procédé exécuté par un équipement utilisateur consiste à : obtenir des premières informations de configuration, les premières informations de configuration étant des informations de configuration de ressources CSI-RS destinées à être reçues par un utilisateur au repos ou inactif ; obtenir des secondes informations d'indication, les secondes informations d'indication étant des informations indiquant la disponibilité d'au moins une ressource CSI-RS ; et déterminer une correspondance entre une ressource CSI-RS correspondant aux premières informations de configuration et un bit d'informations d'indication de disponibilité dans les secondes informations d'indication, et déterminer, en fonction du bit dans les secondes informations d'indication, la disponibilité de la ressource CSI-RS correspondant aux premières informations de configuration.
PCT/CN2022/129888 2021-11-05 2022-11-04 Procédé exécuté par un équipement utilisateur, et équipement utilisateur WO2023078394A1 (fr)

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