WO2023284717A1 - Method executed by user equipment, and user equipment - Google Patents

Abstract

Provided in the present invention is a method executed by a user equipment in a non-connected state. The method comprises: acquiring availability indication information, which is used for indicating the availability of a CSI-RS resource, wherein the CSI-RS resource is configured for a user equipment in a non-connected state, and the availability indication information is transmitted by using a time-frequency resource of a PDCCH, which is determined by using search space set information; on the basis of the search space set information and a quasi co-location relationship of a configured CSI-RS resource, determining a corresponding CSI-RS resource, the availability of which is indicated by the availability indication information; and according to the availability indication information, determining the availability of the corresponding CSI-RS resource.

Description

Method performed by user equipment and user equipment technical field

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.

Background technique

User experience is one of the key factors for the success of 5G/NR, not only the data rate and delay experienced by users, but also the terminal power consumption saving is also an important aspect. Enhanced technical solutions for terminal power consumption saving are one of the elements for the success of 5G/NR. Although some existing technologies have been used to save terminal power consumption, the additional enhanced evolution technology is still one of the key technologies in future development. For example, power consumption saving technology can be applied to terminals in idle state or inactive state, which can help terminal devices further reduce power consumption while ensuring communication capabilities in corresponding states, or improve the ability to receive signals, and obtain other some of the benefits.

Contents of the invention

In order to solve at least part of the above problems, the present invention provides a method performed by the user equipment and the user equipment, through the reception of the reference signal, the terminal can further obtain accurate measurement or parameter estimation, more sleep time or more Good signal receiving ability, etc., so that the terminal can obtain benefits such as reduced power consumption and improved receiving ability, which improves the service capability of the network, expands the compatibility of the network, and greatly reduces the cost of communication network deployment.

According to the present invention, a method performed by a user equipment in a non-connected state is proposed, including: obtaining availability indication information used to indicate the availability of CSI-RS resources, and the CSI-RS resources are for users in a non-connected state The device is configured, and the availability indication information is transmitted by using the time-frequency resource of the PDCCH determined by the search space set information; based on the quasi-co-location relationship between the search space set information and the configured CSI-RS resources, it is determined by The availability indication information indicates available corresponding CSI-RS resources; and determining the availability of the corresponding CSI-RS resources according to the availability indication information.

In addition, according to the present invention, a user equipment is proposed, including: a processor; and a memory storing instructions, wherein the instructions execute the above method when executed by the processor.

According to the present invention, 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.

Description of drawings

The above and other features of the present invention will become more apparent from the following detailed description in conjunction with the accompanying drawings, in which:

Fig. 1 is a flowchart of a method performed by a user equipment according to an embodiment of the present invention.

Fig. 2 is a flowchart of a process of determining a corresponding CSI-RS resource in a method performed by a user equipment according to an embodiment of the present invention.

Fig. 3 is a flowchart of a process of determining a corresponding CSI-RS resource in a method performed by a user equipment according to an embodiment of the present invention.

Fig. 4 is a block diagram schematically showing a user equipment involved in the present invention.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the invention should not be limited to the specific embodiments described below, which are provided by way of example only in order to convey the scope of the subject matter to those skilled in the art. In addition, for the sake of brevity, detailed descriptions of known technologies that are not directly related to the present invention are omitted to prevent confusion to the understanding of the present invention.

Generally, all terms used herein will be interpreted according to their ordinary meanings in the relevant technical field, unless a different meaning is clearly given and/or implied in the context where the term is used. Unless expressly stated otherwise, all references to an/an/the element, device, component, part, step, etc., should be construed to be openly construed as referring to at least one instance of the element, means, component, part, step, etc. The steps of any method disclosed herein do not have to be performed in the exact order disclosed, unless one step has to be explicitly described as being after or before another step and/or implicitly one step must be after or before another step . Any feature of any embodiment disclosed herein can be applied to any other embodiment, where appropriate. Likewise, any advantage of any embodiment can be applied to any other embodiment, and vice versa.

In the following, 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. However, it should be pointed out that 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.

Some of 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

LTE: Long Term Evolution, long-term evolution technology

NR: New Radio, new wireless, new air interface

UE: User Equipment, user equipment

gNB: NR base station

RedCap Device: Reduced Capability Device, reduced capacity device

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

RE: Resource Element, resource unit

CRB: Common Resource Block, public resource block

PRB: Physical Resource Block, physical resource block

VRB: Virtual resource block, virtual resource block

REG: Resource Element Group, resource unit group

DCI: Downlink Control Information, downlink control information

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

NZP-CSI-RS: Not-Zero-Power CSI-RS, non-zero power CSI-RS

CRC: Cyclic Redundancy Check, Cyclic Redundancy Check

QCL: Quasi co-location, quasi co-location

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: SS/PBCH block, synchronization and system signal block

CORESET: Control resource set, control resource collection

PBCH: Physical broadcast channel, physical broadcast channel

PDSCH: Physical downlink shared channel, physical downlink shared channel

PDCCH: Physical downlink control channel, physical downlink control channel

P-RNTI: Paging RNTI, paging wireless network temporary identifier

PEI: paging early indication, paging early indication

DM-RS: Demodulation reference signals, demodulation reference signals

MAC: Medium Access Control, media access layer

MAC-CE: MAC Control Element: MAC Control Cell

The following is a description of techniques associated with the aspects of the present invention. Unless otherwise specified, the same terms in specific embodiments have the same meanings as those in related technologies.

It is worth pointing out that the user, user equipment, and terminal equipment involved in the description of the present invention have the same meaning, and UE may also be used to represent a terminal in this document, which will not be specifically distinguished and limited in the following text. Similarly, 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. In this paper, 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. According to different network settings, a slot can contain 14 (Normal CP scenario) or 12 (Extended CP scenario) OFDM symbols. Multiple slots can be composed into subframes and radio frames. A radio frame has a length of 10 milliseconds, and may consist of several time slots according to different subcarrier spacing parameters, 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 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 also be divided into 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, the RB is 180kHz in the frequency domain. For a subcarrier spacing of 15kHz×2 ^μ , a resource element RE represents one subcarrier in the frequency domain and one OFDM symbol in the time domain. μ can take an integer value from 0 to 4 under different configurations. Signals within the bandwidth can be numbered according to the SCS used. For example, the PRBs in the frequency domain within the bandwidth range may be numbered as 0, 1, 2, ..., N_BWP_μ, so as to determine the position of the corresponding resource in the bandwidth.

According to different conditions such as whether to establish a connection with the wireless network and whether the wireless connection is suspended, the terminals in the network can be divided into different states, such as connected (connected) state, idle (idle) state and inactive (inactive) state. A terminal in a connected state establishes a wireless connection with the network for data transmission or related business processing. Non-connected terminals, such as idle or inactive terminals, also maintain a certain connection with the network. 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 processing of idle state and inactive state users in many aspects of the present invention is similar. In order to avoid redundancy, if no special instructions are given, in the relevant text of the present invention, the relevant actions for idle state terminals or networks can also be applied to Inactive terminal. Other user states similar to the idle state can also be handled by analogy, and will not be described in detail one by one.

If an idle or inactive terminal has no signal to receive, transmit or measure, the terminal may be in a sleep state to save power consumption. According to different channel conditions or services to be processed, the terminal can be in different sleep modes. For example, the light sleep mode is used for a short sleep when there are new signals to be processed in a short period of time. Another example is the deep sleep mode, which is used when the terminal has no new signal to process for a long period of time, and can reduce the power consumption of the terminal more than the light sleep mode. Generally, without affecting service functions, putting the terminal in sleep mode can effectively reduce the power consumption of the terminal, thereby improving user experience.

When or before the terminal receives the data signal, some preprocessing is often required. For example, the terminal can adjust the automatic gain control (AGC) parameters, so that the processed data is within its appropriate dynamic range, so as to obtain a better reception effect. Alternatively, the terminal needs to perform time-frequency tracking, estimate the time offset or frequency offset parameters of the signal according to the reference signal, and perform corresponding corrections to the signal or data to be processed 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 terminal can use the reference signal sent by the network to perform preprocessing. For example, the terminal may perform related actions such as time-frequency synchronization according to one or more synchronization signals.

The network can configure and send reference signals to the terminal for channel measurement, channel parameter estimation, mobility assessment, spatial parameter estimation, etc. of the terminal to realize functions such as radio resource management and auxiliary data signal reception. For example, the terminal may receive the synchronization reference signal sent by the network, and perform AGC adjustment or time-frequency parameter estimation. Alternatively, the terminal may receive the CSI-RS signal sent by the network to perform channel measurement or beam management.

The network configures and sends the CSI-RS reference signal for the terminal to perform functions such as channel measurement and beam management. CSI-RS related parameters can be configured to the UE 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, which can contain multiple configuration parameters, such as time domain cycle and offset configuration, frequency domain position and bandwidth configuration, power configuration, code division parameter configuration, QCL configuration, frequency domain One or more items of density parameters, subcarrier positions, etc. The terminal can determine and receive the CSI-RS signal according to the configured parameters for functions such as measurement or signal reception, for example, receive the CSI-RS signal at multiple time-frequency positions according to the configured period and offset.

According to some configuration parameters, the CSI-RS can be divided into multiple 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. According to different configuration periods, CSI-RS can also be divided into periodic, semi-permanent and aperiodic signal types. Periodic CSI-RS means that the configured CSI-RS reappears on time-frequency resources at a certain period. The semi-permanent and aperiodic CSI-RS resources need to be activated through MAC-CE or DCI instructions after configuration. The terminal can implement different functions according to different CSI-RS resources and related report indications. For example, the CSI-RS signal used for time-frequency tracking may also be called TRS. In the present invention, 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 SSB signals in a certain cycle, and multiple SSB signals can be included in one cycle. The network can transmit and receive signals using spatial filters or beams, which may be analog beams or digital beams or a mixture of the two. The network uses the corresponding beams to send SSBs. For example, the network uses 8 beams to send SSBs in one cycle, then the SSBs in the sending cycle can be numbered SSB0 to SSB7, which respectively represent SSBs sent using different beams.

The QCL parameter is used in the network to represent the spatial relationship between antenna ports of different signals, that is to say, two signals satisfying the QCL relationship have a certain spatial channel correlation, which can be referred to as the two signals satisfying the QCL relationship. For example, if the network configures two signals to satisfy a certain QCL type relationship, the terminal can use the same parameters when processing the two signals, or the parameters obtained from one signal can be applied to the processing of the other signal. For example, the QCL type is QCL-typeA, and parameters such as Doppler frequency shift, Doppler spread, average delay, and delay spread obtained from one signal are applied to another signal, or these parameters are shared. For another example, if the QCL type is QCL-typeC, parameters such as the Doppler frequency shift of a signal and delay spread parameters can be obtained from a signal. For another example, if the QCL type is QCL-typeD, the parameter information of a signal beam can be obtained from a signal. There are several other QCL types, which can be identified by the user according to the relevant parameters when applying. Users can also apply correlation parameters between more signals that satisfy the QCL relationship. Some channel transmissions use the demodulation reference signal DM-RS. For example, PDCCH DM-RS is used for PDCCH transmission. The data transmission in the channel uses the same spatial parameters as DM-RS. It can be referred to as the QCL relationship between the DMRS port of PDCCH and the reference signal. QCL relationship between PDCCH and reference signal.

The CSI-RS signal is sent using a beam, and the network can configure the reference signal of the CSI-RS port of the CSI-RS resource as a signal that satisfies the QCL relationship with it. For example, the network can configure SSB i as a reference signal that satisfies a certain QCL relationship 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.

A terminal in an idle state or an inactive state needs to regularly receive broadcast or paging information from the network, or perform related measurements. At these times, the terminal needs to wake up in advance to achieve synchronization and other actions. For example, when receiving paging information, the terminal can receive the SSB reference signal sent by the network before the paging information according to its own capabilities, channel conditions and other factors, perform AGC, time-frequency tracking and other processing, and then receive the corresponding paging signal, So as to obtain a good reception effect. 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 receiving quality of the related SSB reference signal is poor, or when the processing capability of the terminal is limited, the terminal needs to wake up multiple times to receive multiple SSB reference signals to achieve a better receiving effect. For another example, if the configured reference signal is far from the signal to be received, the terminal may also need to receive more SSB reference signals or maintain a longer active time to obtain a better reception effect, so the terminal often consumes more power to achieve related functions.

A user terminal in an idle state or an inactive state can use the SSB to implement related AGC or time-frequency parameter estimation. The period and time-frequency position of the SSB configured in the cell are often fixed, which may not meet the requirements of different users to receive signals and reduce power consumption. For example, some terminals in the cell receive paging signals far away from the SSB, requiring power consumption More power remains active. Or, the terminal needs to receive the SSB multiple times, and thus consumes more power. Therefore, in order to further reduce the energy consumption of the terminal, the network can provide additional reference signals for the terminal to receive, so that the terminal can obtain the required parameters or information faster, thereby reducing the time or times of wake-up, so as to achieve better energy saving effect. For example, the network may configure the CSI-RS signal to be used as a reference signal for idle or inactive users. For example, the network configures several non-zero power CSI-RS signals in the SIB broadcast information, which are used as reference signals for idle or inactive users. Due to the frequency domain and time domain characteristics of CSI-RS, such as having a larger bandwidth, more symbols, or being closer to the data signal to be received by the terminal, etc., it can effectively reduce the time that the terminal is in a high power consumption state, for example, The required parameters can be obtained at one time, reducing the number of wake-ups. Or use fewer symbols to get the required parameters and so on. The terminal can reduce the energy consumption of the terminal by receiving and utilizing the CSI-RS signal.

The network may send a CSI-RS related configuration message to an idle or active terminal through a signaling message, such as notifying a terminal in the network of configuration parameters through a system information block SIB. The network may send the CSI-RS configuration message through the SIB in a manner of sending periodically or according to the request of the terminal. The terminal can obtain the message according to appropriate signaling and procedures, thereby obtaining relevant configuration parameters of the CSI-RS. The configuration parameters can also be sent to the terminal through an RRC message. For example, the network device carries relevant parameters in the RRC release message, and the terminal can receive the relevant message when the radio link is released, so as to obtain the CSI-RS configuration for processing in the idle state or inactive state later. The configuration parameters of the CSI-RS may include the period of the CSI-RS of the CSI-RS, time-frequency parameters, QCL reference signals, and the like. In order to save the power consumption of the network, the network may not use a separate reference signal, but use the CSI-RS signal sent to the users in the connected state to share with the users in the idle state.

The CSI-RS resources configured by the network may be unavailable by default for non-connected users, and the terminal needs to receive additional instructions from the network to determine the availability of these resources. In addition, the network may also activate or deactivate some or all of the configured CSI-RS signals according to energy-saving requirements or reasons such as other users in the network no longer using these resources. At this time, the terminals in the unconnected state using these CSI-RS signals need to determine whether these CSI-RS signals are still available.

A terminal in idle state or inactive state can determine one or more CSI-RS resources according to network configuration. Whether to actually send CSI-RS signals on these resources can be controlled by the network. The network can indicate the available or unavailable status of the CSI-RS resources through physical layer or high layer signaling. The terminal receives the indication information (availability indication information) of the network, and determines the status of the configured CSI-RS resources. For example, the network indicates the state of the associated CSI-RS resource once through physical layer signaling, or indicates the state of the CSI-RS resource over multiple periods through physical layer signaling. The terminal determines whether the relevant CSI-RS resources are available for related processing according to the indication information and other parameters, that is, determines whether the configured CSI-RS resources are valid or available at a corresponding time-frequency position on the cycle, or CSI-RS resources Whether the receiving opportunity of each CSI-RS related to the RS resource is valid or available. The terminal determines that the CSI-RS signal is transmitted on available CSI-RS resources. For example, if the network indicates that the state of the associated CSI-RS resources is available through physical layer signaling, then the terminal determines that one or more relevant CSI-RS receivers can receive valid CSI-RS signals according to the indication, Power consumption savings as described above can be achieved by utilizing the CSI-RS signal as a reference signal. The indication information is used to indicate the availability status of the CSI-RS, which is called availability information. Usability information can also be expressed as validity information, activation information, etc., which will be described as usability information uniformly in the following.

The outline of the present invention will be described below with reference to FIGS. 1 to 3 .

Fig. 1 is a flowchart of a method performed by a user equipment according to an embodiment of the present invention.

As shown in FIG. 1, in S102, availability indication information for indicating the availability of CSI-RS resources is acquired. The CSI-RS resource may be configured for the user equipment in the unconnected state, and the availability indication information may be transmitted through the time-frequency resource of the PDCCH determined by using the search space set information. In an example, the PDCCH detection opportunity of the PDCCH may be determined based on the search space set information, and the availability indication information may be acquired based on the PDCCH detection opportunity. The specific details will be described in Example 1 and Example 2 below.

Then, in S104, based on the search space set information and the configured quasi-co-location relationship of the CSI-RS resources, determine the corresponding CSI-RS resources whose availability is indicated by the availability indication information.

Next, in S106, the availability of the corresponding CSI-RS resource is determined according to the availability indication information. When the CSI-RS resource is available, the user equipment in the unconnected state can receive the CSI-RS signal on the available CSI-RS resource as a reference signal, so as to realize the power saving described above.

Fig. 2 is a flowchart of a process of determining a corresponding CSI-RS resource in a method performed by a user equipment according to an embodiment of the present invention. FIG. 2 is an example of S104 shown in FIG. 1 .

As shown in FIG. 2, in S202, the PDCCH detection opportunity of the PDCCH is determined based on the search space set information.

In S204, the quasi-co-location reference signal that satisfies the quasi-co-location relationship with the PDCCH detection opportunity is determined based on the search space set information.

In S206, based on the configured quasi-co-location relationship of the CSI-RS resources, determine the CSI-RS resources satisfying the quasi-co-location relationship with the quasi-co-location reference signal as the corresponding CSI-RS resources whose availability is indicated by the availability indication information.

Wherein, the above S206 can be realized through the process shown in FIG. 3 . Fig. 3 is a flowchart of a process of determining a corresponding CSI-RS resource in a method performed by a user equipment according to an embodiment of the present invention.

As shown in Fig. 3, in S302, based on the search space set information, determine the SSB number corresponding to the PDCCH detection opportunity. For the specific implementation process of this process, reference may be made to the descriptions of Embodiment 1 and Embodiment 2 below.

In S304, based on the SSB number determined in S302, determine the SSB satisfying the quasi-co-location relationship with the PDCCH detection opportunity, as the quasi-co-location reference signal.

In an example, there is a one-to-one correspondence between PDCCH detection opportunities and SSB numbers. At this time, the SSB corresponding to the SSB sequence number corresponding to the PDCCH detection opportunity is determined as the quasi-co-located reference signal. Furthermore, the CSI-RS resource that satisfies the quasi-co-location relationship with the determined quasi-co-located reference signal can be determined as the corresponding CSI-RS resource, so as to determine the corresponding CSI-RS resource based on the obtained availability indication information. availability.

In another example, one PDCCH detection opportunity may correspond to multiple SSB numbers. At this time, the PDCCH detection opportunity cannot uniquely determine the SSB that actually satisfies the quasi-co-location relationship with it, that is, the actual quasi-co-location reference signal cannot be determined. In this case, the user equipment may regard the SSBs corresponding to all SSB numbers corresponding to the PDCCH detection opportunity as quasi-co-located reference signals corresponding to the PDCCH detection opportunity. Furthermore, the CSI-RS resources satisfying the quasi-co-location relationship with the plurality of SSBs regarded as quasi-co-located reference signals may be determined as corresponding CSI-RS resources. Then, the availability of the corresponding CSI-RS resource may be determined based on the acquired availability indication information. That is, when the actual quasi-co-located reference signal cannot be uniquely determined because one PDCCH detection opportunity may correspond to multiple SSB sequence numbers, it is determined that the multiple SSBs corresponding to the PDCCH detection opportunity satisfy the quasi-co-located reference signal Availability of CSI-RS resources.

In an example, if a PDCCH detection opportunity corresponds to multiple SSB numbers, then for the PDCCH detection opportunity corresponding to multiple SSB numbers, based on the SSB transmission parameters configured by the network, it may be determined that the actual PDCCH detection opportunity corresponding to the PDCCH detection opportunity is Transmitted SSB. Then, only the actually transmitted SSB may be determined as the quasi-co-located reference signal corresponding to the PDCCH detection opportunity. That is, in this case, only the availability of CSI-RS resources that have a quasi-co-location relationship with the actually transmitted SSB can be determined.

Sometimes, there may be multiple SSBs actually transmitted corresponding to the PDCCH detection opportunity. For this situation, in an example, the availability indication information may include corresponding indication information indicating the corresponding CSI-RS resource whose availability is indicated by the availability indication information. At this time, when one PDCCH detection opportunity corresponds to multiple SSB numbers, the corresponding CSI-RS resource whose availability is indicated by the availability indication information may be determined based on the corresponding indication information.

In addition, in the case that the availability indication information may include corresponding indication information indicating the availability of the corresponding CSI-RS resource indicated by the availability indication information, if one PDCCH detection opportunity corresponds to multiple SSB sequence numbers, the user equipment may also directly base on the corresponding indication information, and determine the corresponding CSI-RS resources whose availability is indicated by the availability indication information.

Hereinafter, details of the present invention are described in Embodiment 1 and Embodiment 2.

【Example 1】

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. The terminal performs DCI detection on the configured resources. When the DCI message on the channel is correctly received, 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. The identifiers of search space sets and CORESETs can be 0 or non-zero. When the search space flag is 0, the search space set and CORESET parameters used by the network are determined by the information indicated by the MIB. For example, the network indicates the parameters used by the control resource set CORESET0 through controlResourceSetZero, and indicates the parameters used by the common search space set searchSpace0 through searchSpaceZero. The terminal can determine several common search spaces for type0-PDCCH based on these configuration parameters and the minimum bandwidth parameters of the frequency band where the signal is located, the subcarrier spacing parameters for SIB1 signals indicated by the network, and the subcarrier spacing parameters used by SSB, etc. Set parameters, including the SSB used by the serving cell and the CORESET multiplexing pattern (SS/PBCH block and CORESET multiplexing pattern), which may be any one of pattern1, pattern2, and pattern3, the bandwidth and RB position of CORESET, and the search space Time slots and symbols, etc. The terminal can also determine the common search space set parameters for type0-PDCCH, including related offset parameters O and number parameters M and the relationship between these PDCCH detection opportunities and SSB numbers.

In a cell that uses the multiplexing mode pattern1 of SSB and CORESET, the PDCCH that satisfies the QCL relationship with one SSB sequence number may be sent on the CORESET on two consecutive time slots. The terminal detects the PDCCH on the PDCCH detection opportunities of two consecutive time slots with the starting symbol n ₀ determined by the common search space set. For example, for SSB i, UE adopts the formula

Determine the starting slot number n0 of the associated consecutive slots. and, if

Detect on radio frames satisfying _SFNC mod2=0. if

Detect on radio frames satisfying _SFNC mod2=1. Among them, the O and M parameters are determined according to the searchSpaceZero parameter indicated by the network, and SFN _C is the wireless frame number according to the BWP where the PDCCH is located,

is the number of time slots in the radio frame determined according to the PDCCH subcarrier parameter μ. The searchSpaceZero parameter can also determine the starting symbol position of each PDCCH detection opportunity on the time slot. Some parameters used in these detection opportunities, such as the symbol length on the time slot, the frequency domain bandwidth position, etc., are determined by the same CORESET parameter. Therefore, according to the network configuration, the PDCCH detection opportunities corresponding to different SSB numbers using the same time slot may overlap. For example, for a cell using pattern1 on the FR1 frequency band, if the terminal determines that the O parameter is 0, the M parameter is 1, and the start symbol is 0 according to the network configuration, then the terminal can determine that the two consecutive slot numbers of the PDCCH corresponding to SSB0 are 0 and 1, and have

That is, the terminal performs type0-PDCCH detection at the PDCCH detection opportunities on time slot 0 and time slot 1 of the radio frame satisfying _SFNC mod2=0. Similarly, the terminal may determine that the time slot numbers of the detection opportunity corresponding to SSB1 are 1 and 2, the time slot numbers of the detection opportunity corresponding to SSB2 are 2 and 3, and so on. Under this configuration, the network may transmit the PDCCH corresponding to SSB0 on slot 0 or slot 1, transmit the PDCCH corresponding to SSB1 on slot 1 or slot 2, and so on. At this time, the terminal cannot determine the SSB sequence number of the PDCCH detected at the position that meets the QCL according to the location of the detection opportunity. For example, the received PDCCH that meets the QCL with SSB0 in time slot 1 may also receive the PDCCH that meets the QCL with SSB1. For PDCCH, the terminal cannot determine whether the PDCCH satisfies the QCL relationship with SSB0 or SSB1 according to the PDCCH received in time slot 1. Similarly, similar situations may also exist in other time slots. Similarly, when the M parameter is 1/2 and the O parameter is 0, the terminal can determine that the first group of CORESET symbols on slot 0 and slot 1 correspond to SSB0, and the second group of CORESET symbols on slot 0 and slot 1 The symbol corresponds to SSB1, the first set of CORESET symbols on slot 1 and slot 2 corresponds to SSB2, the second set of CORESET symbols on slot 1 and slot 2 corresponds to SSB3, and so on. The terminal cannot determine whether the PDCCH detected on the first group of CORESETs on slot 1 corresponds to SSB0 or SSB2, and the terminal cannot determine whether the PDCCH detected on the second group of CORESETs on slot 1 corresponds to SSB1 or SSB3, etc. Similarly, similar situations may also exist in other time slots.

In a cell using pattern1, the possible values of M include 1, 1/2, and 2, etc. According to the previous method for determining the PDCCH detection opportunity slots on the search space set 0, when the value of M is 1 or 1/2, the PDCCH detection opportunities of two adjacent time slots used by different SSB numbers overlap. When the value of M is 2, the PDCCH detection opportunities of two adjacent time slots corresponding to one SSB sequence number do not overlap with the PDCCH detection opportunities of two adjacent time slots corresponding to other SSBs. In a cell using pattern2 or pattern3, the PDCCH detection opportunity determined by search space set 0 and CORESET0 has a one-to-one correspondence with the SSB number. The terminal can determine the position of the PDCCH opportunity that satisfies the QCL relationship with the SSB number, and the PDCCH corresponding to each SSB Detection opportunities do not overlap. Therefore, according to the configuration of the network, the terminal can determine that each PDCCH detection opportunity corresponds to one SSB sequence number or two SSB sequence numbers.

The network may indicate the status of the CSI-RS resource configured through the SIB through various physical layer signaling. For example, the network indicates the state of the CSI-RS resource through a field in the DCI. DCI may be a signal for different purposes, such as PEI signal, such as paging DCI, etc. The DCI is transmitted using the PDCCH channel, and the terminal receives the PDCCH on the time-frequency resource related to the PDCCH detection opportunity used to indicate the state of the CSI-RS resource, and detects the related DCI. The terminal needs to determine the corresponding relationship between the PDCCH detection opportunities and the indicated CSI-RS resources, so as to determine the availability of which CSI-RS resources are indicated by the detected DCI in the PDCCH.

The terminal determines the corresponding CSI-RS resource according to the QCL reference signal of the PDCCH, and the terminal determines the CSI-RS resource using the same QCL reference signal as the PDCCH as the corresponding CSI-RS resource. For example, the terminal determines that the QCL reference signal used by the PDCCH is SSBx, and the terminal determines the availability of the CSI-RS indicated in the PDCCH corresponding to using SSBx as the QCL reference signal. In a specific example, the network is configured with four sets of SSB signals, denoted by SSB0, SSB1, SSB2, and SSB3 respectively. The terminal may determine that each PDCCH satisfies the QCL relationship with SSB0, SSB1, SSB2 and SSB3 according to the configuration of the PDCCH. The network also configures several CSI-RS resources through the SIB message, for example, 4 groups of CSI-RS resources are configured, and SSB0, SSB1, SSB2 and SSB3 are respectively used as reference signals. The terminal may determine the availability of CSI-RS resources using SSB0 as a reference signal indicated by the DCI in the PDCCH using SSB0 as a reference signal. The terminal determines that the availability indicated by the DCI corresponds to using the relevant SSB as the CSI-RS resource of the reference signal. The CSI-RS resource using the relevant SSB as a reference signal may be one or more CSI-RS resources.

The DCI signal used to indicate the availability of the CSI-RS can be transmitted using the time-frequency resource of the PDCCH determined by the search space set 0 . The terminal detects the DCI signal on the PDCCH detection opportunity determined by the search space set 0. The terminal can determine the corresponding relationship between the PDCCH detection opportunity and the SSB according to the configuration of the network. For example, when the cell is configured as pattern1, if the M parameter indicates 1 or 1/2, the terminal may determine that there is a corresponding relationship between one PDCCH detection opportunity and two SSBs. In other cases, the terminal may determine that there is a corresponding relationship between one PDCCH detection opportunity and one SSB.

In an optional embodiment, the terminal can determine two or one SSB corresponding to each PDCCH detection opportunity according to network configuration parameters, and the terminal determines the DCI detected on the PDCCH detection opportunity according to the determined correspondence with one or two SSBs. Indicates the availability of the CSI-RS signal. When the determined PDCCH corresponds to one SSB, the terminal determines the availability of the CSI-RS resource corresponding to one SSB indicated in the DCI. When the determined PDCCH detection opportunity corresponds to two SSB numbers, the terminal determines that the DCI indicates availability of CSI-RS resources corresponding to the two SSB numbers.

In an optional embodiment, the terminal can determine two or one SSBs corresponding to each PDCCH detection opportunity used to indicate the availability of CSI-RS resources according to the configuration parameters of the network, and the terminal determines according to the determined correspondence with one or two SSBs Availability of the CSI-RS signal indicated by the DCI. When one PDCCH detection opportunity determined on the bandwidth corresponds to one SSB, the terminal can accurately determine the SSB satisfying the quasi-co-location relationship with the PDCCH detection opportunity, that is, the SSB uniquely corresponding to it. At this time, the terminal can determine the CRI-RS resources satisfying the quasi-co-location relationship with the SSB according to the quasi-co-location relationship of the CRI-RS resources. The availability of the CRI-RS resources is the DCI detected by the PDCCH detection opportunity. Indicated by the availability indication in . Furthermore, the terminal can determine the availability of the CSI-RS resource corresponding to the SSB.

In addition, when a PDCCH on the determined bandwidth corresponds to two SSB numbers, since the terminal cannot accurately and uniquely determine which of the two SSBs corresponding to the two SSB numbers satisfies the quasi-co-location relationship with the PDCCH detection opportunity Therefore, the terminal can regard the two SSBs as quasi-co-located reference signals. The so-called "regarding" the two SSBs as quasi-co-located reference signals does not mean that the two SSBs and the PDCCH detection opportunity actually meet the quasi-co-located relationship, but only when the quasi-co-located reference signals cannot be uniquely determined. In order to further determine the availability of CSI-RS resources smoothly, these two SSBs are regarded as quasi-co-located reference signals that satisfy the quasi-co-located relationship with the PDCCH, regardless of whether they are actually or not The SSB that satisfies the quasi-co-location relationship with the PDCCH detection opportunity. Furthermore, the terminal can confirm the CSI-RS resources satisfying the quasi-co-location relationship with the two SSBs. Then the terminal may determine the availability of the CSI-RS resources corresponding to the two SSBs based on the availability indication information in the DCI detected on the PDCCH detection opportunity. As a specific example, when the cell is configured as pattern1, if the M parameter indicates 1 or 1/2, the terminal can determine that the PDCCH detection opportunities of the first and last time slots in a period correspond to one SSB, and the other There is a corresponding relationship between the PDCCH detection opportunity on the time slot and the two SSBs. The terminal determines that the DCI indicates the availability of CSI-RS resources corresponding to the two SSB numbers at all PDCCH detection opportunities. When the DCI is on a PDCCH detection opportunity corresponding to one SSB, the terminal determines the availability of CSI-RS resources corresponding to two identical SSB numbers indicated on the DCI.

As a specific embodiment, when the terminal determines that there is a corresponding relationship between one PDCCH detection opportunity and two SSBs, the terminal determines the availability information in the DCI indicating the CSI-RS including the two SSBs as QCL reference signals. The terminal can separately determine the availability of the CSI-RS resource corresponding to each SSB sequence number according to the corresponding relationship. For example, the terminal detects the availability of CSI-RS resources using SSB0 and SSB1 as QCL reference signals in the DCI detected by the PDCCH corresponding to SSB0 and SSB1. Optionally, the terminal determines the availability of the CSI-RS resource of the QCL reference signal according to the sequence number of the SSB. The terminal determines the length N of the availability bits of the CSI-RS resources satisfying the QCL relationship with a certain SSB sequence number. For example, the network uses a bitmap to indicate the availability of CSI-RS resources satisfying the QCL relationship with a certain SSB number. The terminal may determine the length N of the bitmap according to certain rules, for example, according to the number of CSI-RS resource groups. For another example, the terminal may determine the length N of availability bits according to an encoding rule. The network may also indicate the availability of CSI-RS resources satisfying the QCL relationship with a certain SSB sequence number in other ways, and the specific way is not limited here. The terminal determines that the availability bits of the CSI-RS resources that satisfy the QCL relationship with the two SSB numbers are arranged in order. For example, the terminal determines that the availability of the CSI-RS corresponding to the smaller sequence number SSB is indicated by the NI bit, and the availability of the CSI-RS resources corresponding to the larger sequence number SSB is indicated by the NI bit. The availability of RS is indicated using N2 bits. The terminal determines that the first N1 bits indicate the availability of CSI-RS resources whose SSBs with smaller sequence numbers satisfy the QCL relationship, and the terminal determines that the subsequent N2 bits indicate the availability of CSI-RS resources whose SSBs with larger sequence numbers satisfy the QCL relationship. The terminal may determine that the number of bits indicating availability of CSI-RS resources in the DCI is N1+N2. As a specific embodiment, when the terminal determines that there is a corresponding relationship between a PDCCH detection opportunity and an SSB, the terminal determines the availability information in the DCI indicating a CSI-RS that includes an SSB as a QCL reference signal. For example, the terminal determines the length N1 of availability bits of the CSI-RS resource satisfying the QCL relationship with a certain SSB sequence number, and the terminal may determine that the number of bits indicating the availability of the CSI-RS resource in the DCI is N1.

In an optional embodiment, the terminal can determine two or one SSBs corresponding to each PDCCH detection opportunity used to indicate the availability of CSI-RS resources according to the configuration parameters of the network, and the terminal determines according to the determined correspondence with one or two SSBs Availability of the CSI-RS signal indicated by the DCI. When all PDCCH detection opportunities determined on the bandwidth correspond to one SSB, the terminal determines the availability of the CSI-RS resource corresponding to one SSB indicated in the DCI. When at least one PDCCH on the determined bandwidth corresponds to two SSB numbers, the terminal determines that the DCI indicates availability of CSI-RS resources corresponding to the two SSB numbers. As a specific example, when the cell is configured as pattern1, if the M parameter indicates 1 or 1/2, the terminal can determine that the PDCCH detection opportunities of the first and last time slots in a period correspond to one SSB, and the other There is a corresponding relationship between the PDCCH detection opportunity on the time slot and the two SSBs. The terminal determines that the DCI detected on all PDCCH detection opportunities on the bandwidth indicates the availability of CSI-RS resources corresponding to the two SSB numbers. At a PDCCH detection opportunity corresponding to one SSB, the terminal determines the availability of CSI-RS resources corresponding to two identical SSB sequence numbers indicated on the detected DCI.

In an optional embodiment, the terminal can determine two or one SSB corresponding to each PDCCH detection opportunity according to network configuration parameters, the terminal determines the correspondence between DCI and SSB sequence numbers according to the bit indication, and the terminal determines the corresponding relationship between DCI and SSB according to the determined correspondence with SSB Availability of the CSI-RS signal indicated by the DCI. When the terminal determines that there is a corresponding relationship between a PDCCH detection opportunity and two SSBs, the terminal determines which SSB indicated by the DCI satisfies the availability of the CSI-RS resource of the QCL relationship according to the bit indication. Optionally, bit 0 is used to indicate that the DCI indicates the availability of CSI-RS resources corresponding to a smaller SSB number, and bit 1 is used to indicate that the DCI indicates the availability of CSI-RS resources corresponding to a larger SSB number. Optionally, bit 1 is used to indicate that the DCI indicates the availability of CSI-RS resources corresponding to a smaller SSB number, and bit 0 is used to indicate that the DCI indicates the availability of CSI-RS resources corresponding to a larger SSB number. Optionally, the bit indication is a bit in the DCI detected on the PDCCH detection opportunity. Optionally, when a PDCCH detection opportunity may correspond to more than two SSBs, use more bits to indicate the availability of the CSI-RS resources corresponding to the SSB numbers indicated by the DCI, for example, use the order of the corresponding SSB numbers No.

Optionally, the terminal can determine two or one SSB corresponding to each PDCCH detection opportunity according to network configuration parameters, and the terminal determines that the length indicated by the bit is 0 or 1 according to the two or one SSB corresponding to each PDCCH detection opportunity. Specifically, when the terminal determines that there is a corresponding relationship between a PDCCH detection opportunity and two SSBs, the terminal determines that the length of the bit indication is 1, and the terminal determines which SSB indicated by the DCI satisfies the availability of the CSI-RS resource of the QCL relationship according to the content of the bit indication . When the terminal determines that there is a corresponding relationship between a PDCCH detection opportunity and an SSB, the terminal determines that the length of the bit indication is 0, and the terminal determines the availability of the CSI-RS resource indicated by the DCI according to the SSB corresponding to the PDCCH detection relationship. Optionally, the availability information indicates the availability of the corresponding CSI-RS resources in a bitmap or coding manner, and the terminal determines the availability of the CSI-RS resources indicated by the bitmap or coding according to the usage bit indication.

[Example 2]

The following description of another group of embodiments omits certain details that are the same as or similar to those of the foregoing embodiments, and for these details, reference may be made to the descriptions of the foregoing embodiments.

The network can indicate the parameters sent by the SSB through the SIB or RRC message, for example, the network indicates the sequence number of the SSB actually sent through the ssb-PositionsInBurst information element in the SIB1. ssb-PositionsInBurst may further include multiple parameters. For example, the network indicates the sending status of all SSBs or each SSB in each SSB group through the inOneGroup 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. When the maximum number of SSBs in a half frame is 64, every 8 SSBs can be divided into one group, and 8 bits are used to represent the SSB transmission status in each group. 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. 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). 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. The use bit is set to 0 to indicate that the SSB of the group does not exist, or that the SSB of the group is not transmitted. Setting each bit in groupPresence to 1 indicates that the SSB of this group is transmitted or not transmitted according to the conditions indicated in inOneGroup. In this way, 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.

In an optional embodiment, the terminal determines two or one actual transmitted SSB corresponding to each PDCCH detection opportunity according to network configuration parameters, and the terminal determines the SSB detected on the PDCCH detection opportunity according to the determined correspondence with one or two SSBs. Availability of the CSI-RS signal indicated by the DCI. For a specific example, for example, for a cell using pattern1 on the FR1 frequency band, if the terminal determines that the O parameter is 0 and the M parameter is 1 according to the network configuration, then the terminal can determine that the two consecutive slot numbers of the PDCCH corresponding to SSB0 are 0 and 1 , and have

That is, the terminal performs type0-PDCCH detection at the PDCCH detection opportunities on time slot 0 and time slot 1 of the radio frame satisfying _SFNC mod2=0. Similarly, the terminal may determine that the time slot numbers of the detection opportunity corresponding to SSB1 are 1 and 2, the time slot numbers of the detection opportunity corresponding to SSB2 are 2 and 3, and so on. Under this configuration, the network may transmit the PDCCH corresponding to SSB0 on slot 0 or slot 1, transmit the PDCCH corresponding to SSB1 on slot 1 or slot 2, and so on. According to the network configuration, the cell has a maximum of 4 SSB beams, and the actual transmitted SSBs indicated by the bitmap 0101 are sequence numbers SSB0 and SSB2. Then, for SSB0 on the cell, the time slot numbers for PDCCH detection opportunities are 0 and 1, the time slot numbers for PDCCH detection opportunities corresponding to SSB1 are 1 and 2, and the time slot numbers for PDCCH detection opportunities corresponding to SSB2 are 2 and 3. The time slot numbers of the PDCCH detection opportunities corresponding to SSB2 are 2 and 3. The terminal may determine according to the network configuration that time slots 0 and 1 correspond to an actually sent SSB0, and time slots 2 and 3 correspond to an actually sent SSB2.

In an optional embodiment, the terminal can determine two or one actual transmitted SSB corresponding to each PDCCH detection opportunity according to the configuration parameters of the network, and the terminal determines the CSI- Availability of RS signal. When the determined PDCCH corresponds to an SSB actually transmitted, the terminal determines the availability of the CSI-RS resource corresponding to the SSB indicated in the DCI. When the determined PDCCH corresponds to two actually transmitted SSB numbers, the terminal determines that the DCI indicates availability of CSI-RS resources corresponding to the two SSB numbers. Specifically, when the terminal determines that there is a corresponding relationship between a PDCCH detection opportunity and two actually transmitted SSBs, the terminal determines the availability information in the DCI that indicates the CSI-RS that includes the two SSBs as QCL reference signals. The terminal can separately determine the availability of the CSI-RS resource corresponding to each SSB sequence number according to the corresponding relationship. For example, the terminal detects the availability of CSI-RS resources using SSB0 and SSB1 as QCL reference signals in the DCI detected by the PDCCH corresponding to SSB0 and SSB1. Optionally, the terminal determines the availability of the CSI-RS resource of the QCL reference signal according to the sequence number of the SSB. The terminal determines the length N of the availability bits of the CSI-RS resources satisfying the QCL relationship with a certain SSB sequence number. For example, the network uses a bitmap to indicate the availability of CSI-RS resources satisfying the QCL relationship with a certain SSB number. The terminal can determine the length of the bitmap according to certain rules. For example, the terminal can determine the length of the bitmap to be N according to the number of CSI-RS resource groups. The network may also indicate the availability of CSI-RS resources satisfying the QCL relationship with a certain SSB sequence number in other ways, such as through encoding, which is not limited here. For example, the terminal can determine the length N of the availability bits according to the encoding rule. The terminal determines that the availability bits of the CSI-RS resources that satisfy the QCL relationship with the two SSB numbers are arranged in order. For example, the terminal determines that the first N1 bits indicate the availability of CSI-RS resources that satisfy the QCL relationship with the SSB with a smaller sequence number. The terminal determines that the following The N2 bits of indicate the availability of the CSI-RS resource whose SSB with the larger sequence number satisfies the QCL relationship. The terminal may determine that the number of bits indicating availability of CSI-RS resources in the DCI is N1+N2. Specifically, when the terminal determines that there is a corresponding relationship between a PDCCH detection opportunity and an actually transmitted SSB, the terminal determines that the DCI indicates availability information of a CSI-RS that includes an SSB as a QCL reference signal. For example, the terminal determines the length N1 of the availability bits of the CSI-RS resources satisfying the QCL relationship with a certain SSB sequence number. The terminal may determine that the number of bits indicating availability of CSI-RS resources in the DCI is N1.

In an optional embodiment, the terminal can determine two or one actual transmitted SSB corresponding to each PDCCH detection opportunity used to indicate the availability of CSI-RS resources according to the configuration parameters of the network, and the terminal can determine the The correspondence determines the availability of the CSI-RS signal indicated by the DCI. When all the PDCCHs determined on the bandwidth correspond to one SSB, the terminal determines the availability of the CSI-RS resource corresponding to one SSB indicated in the DCI. When at least one PDCCH on the bandwidth corresponds to two SSB numbers, the terminal determines that the DCI indicates availability of CSI-RS resources corresponding to the two SSB numbers. As a specific example, when the cell is configured as pattern1, if the M parameter indicates 1 or 1/2, the terminal can determine that the PDCCH detection opportunities of the first and last time slots in a period correspond to one SSB, and the other There is a corresponding relationship between the PDCCH detection opportunity on the time slot and the two SSBs. The terminal determines the availability of the CSI-RS resources corresponding to the two SSB numbers indicated by the DCI at all PDCCH detection opportunities. When the DCI is on a PDCCH detection opportunity corresponding to one SSB, the terminal determines the availability of CSI-RS resources corresponding to two identical SSB numbers indicated on the DCI.

In an optional embodiment, the terminal can determine two or one actual transmitted SSB corresponding to each PDCCH detection opportunity according to the configuration parameters of the network, the terminal determines the corresponding relationship between DCI and SSB sequence number according to the bit indication, and the terminal determines the corresponding relationship between the DCI and the SSB The correspondence determines the availability of the CSI-RS signal indicated by the DCI. When the terminal determines that there is a corresponding relationship between a PDCCH detection opportunity and two actual transmission SSBs, the terminal determines which SSB indicated by the DCI satisfies the availability of the CSI-RS resource of the QCL relationship according to the bit indication. Optionally, bit 0 is used to indicate that the DCI indicates the availability of CSI-RS resources corresponding to a smaller SSB number, and bit 1 is used to indicate that the DCI indicates the availability of CSI-RS resources corresponding to a larger SSB number. Optionally, bit 1 is used to indicate that the DCI indicates the availability of CSI-RS resources corresponding to a smaller SSB number, and bit 0 is used to indicate that the DCI indicates the availability of CSI-RS resources corresponding to a larger SSB number. Optionally, the bit indication is a bit in the DCI detected on the PDCCH detection opportunity.

Optionally, the terminal can determine two or one actual transmission SSB corresponding to each PDCCH detection opportunity according to the configuration parameters of the network, and the terminal determines that the length indicated by the bit is 0 or 0 according to the two or one SSB corresponding to each PDCCH detection opportunity. 1. Specifically, when the terminal determines that there is a corresponding relationship between a PDCCH detection opportunity and two actually transmitted SSBs, the terminal determines that the length of the bit indication is 1, and the terminal determines which SSB indicated by the DCI satisfies the CSI-RS of the QCL relationship according to the content indicated by the bit. resource availability. When the terminal determines that there is a corresponding relationship between a PDCCH detection opportunity and an actual transmission SSB, the terminal determines that the length of the bit indication is 0, and the terminal determines the availability of the CSI-RS resource indicated by the DCI according to the SSB corresponding to the PDCCH detection relationship.

Optionally, the availability information indicates the availability of the corresponding CSI-RS resources in a bitmap or coding manner, and the terminal determines the availability of the CSI-RS resources indicated by the bitmap or coding according to the usage bit indication.

Next, FIG. 4 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. 4 is a block diagram showing a user equipment UE according to the present invention.

As shown in FIG. 4 , the user equipment 40 includes a processor 41 and a memory 42 . The processor 41 may include, for example, a microprocessor, a microcontroller, an embedded processor, and the like. The memory 42 may include, for example, a volatile memory (such as a random access memory RAM), a hard disk drive (HDD), a nonvolatile memory (such as a flash memory), or other memories. Memory 42 has program instructions stored thereon. When the instruction is executed by the processor 41, 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.

It should be understood that the above-mentioned embodiments of the present invention may be implemented by software, hardware, or a combination of software and hardware. For example, 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.

In this application, "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 mobile terminal, such as a mobile phone, a notebook, and other terminal equipment that can communicate wirelessly with a base station or a micro base station.

Furthermore, embodiments of the present invention disclosed herein may be implemented on a computer program product. More specifically, 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. 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.

In addition, 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. In addition, when an advanced technology that can replace the current integrated circuit appears due to the progress of semiconductor technology, the present invention can also use an integrated circuit obtained by using the advanced technology.

Although the present invention has been illustrated in conjunction with the preferred embodiments thereof, those skilled in the art will understand that various modifications, substitutions and alterations can be made to the present invention without departing from the spirit and scope of the invention. Accordingly, the invention should not be limited by the above-described embodiments, but by the appended claims and their equivalents.

Claims (10)

1. A method performed by a user equipment in a disconnected state, comprising:

   Acquire availability indication information for indicating the availability of CSI-RS resources, the CSI-RS resources are configured for user equipment in a non-connected state, and the availability indication information is determined by using the search space set information of the PDCCH Time-frequency resource transmission;

   Based on the search space set information and the quasi-co-location relationship of the configured CSI-RS resources, determine the corresponding CSI-RS resources whose availability is indicated by the availability indication information; and

   Determine the availability of the corresponding CSI-RS resource according to the availability indication information.
2. The method according to claim 1, wherein, based on the search space set information and the configured quasi-co-location relationship of the CSI-RS resources, determining the corresponding CSI-RS resources whose availability is indicated by the availability indication information comprises:

   determining a PDCCH detection opportunity of the PDCCH based on the search space set information;

   determining a quasi-co-location reference signal that satisfies a quasi-co-location relationship with the PDCCH detection opportunity based on the search space set information;

   Based on the configured quasi-co-location relationship of the CSI-RS resources, determine the CSI-RS resources satisfying the quasi-co-location relationship with the quasi-co-location reference signal as the corresponding CSI-RS resources whose availability is indicated by the availability indication information.
3. The method according to claim 2, wherein determining a quasi-co-location reference signal that satisfies a quasi-co-location relationship with the PDCCH detection opportunity based on the search space set information includes:

   Determine an SSB sequence number corresponding to the PDCCH detection opportunity based on the search space set information;

   Based on the SSB sequence number, determine the SSB satisfying the quasi-co-location relationship with the PDCCH detection opportunity as the quasi-co-location reference signal.
4. The method according to claim 3, wherein, based on the SSB sequence number, determining the SSB that satisfies the quasi-co-location relationship with the PDCCH detection opportunity as the quasi-co-location reference signal includes:

   When there is a one-to-one correspondence between the PDCCH detection opportunity and the SSB sequence number, determine the SSB corresponding to the SSB sequence number corresponding to the PDCCH detection opportunity as the quasi-co-located reference signal; and/or

   When a PDCCH detection opportunity corresponds to multiple SSB numbers, the SSBs corresponding to all SSB numbers corresponding to the PDCCH detection opportunity are regarded as quasi-co-located reference signals corresponding to the PDCCH detection opportunity.
5. The method according to claim 3, wherein, based on the SSB sequence number, the determined quasi-co-located reference signal comprises:

   When one PDCCH detection opportunity corresponds to multiple SSB numbers, for the PDCCH detection opportunities corresponding to multiple SSB numbers, based on the SSB transmission parameters configured by the network, determine the actual PDCCH detection opportunity corresponding to the transmitted SSB;

   Only the SSB actually transmitted is determined as the quasi-co-located reference signal corresponding to the PDCCH detection opportunity.
6. The method according to claim 3, wherein the availability indication information includes corresponding indication information indicating the availability of the corresponding CSI-RS resources indicated by the availability indication information, and the corresponding CSI-RS resources indicated by the availability indication information are determined Resources also include:

   When one PDCCH detection opportunity corresponds to multiple SSB numbers, based on the corresponding indication information, determine the corresponding CSI-RS resource whose availability is indicated by the availability indication information.
7. The method according to claim 5, wherein the availability indication information includes corresponding indication information indicating the availability of the corresponding CSI-RS resources indicated by the availability indication information, and the corresponding CSI-RS resources indicated by the availability indication information are determined Resources also include:

   When there are multiple actually transmitted SSBs corresponding to the PDCCH detection opportunity, based on the corresponding indication information, determine the corresponding CSI-RS resource whose availability is indicated by the availability indication information.
8. The method according to any one of claims 1-7, wherein acquiring availability indication information used to indicate the availability of CSI-RS resources comprises:

   determining a PDCCH detection opportunity for the PDCCH based on the search space set information; and

   The availability indication information is acquired based on the PDCCH detection opportunity.
9. The method according to any one of claims 1-7, wherein the availability indication information is configured in a DCI message, and/or,

   The usability indication information is configured by at least one of a bit indication manner, a bitmap manner and a coding manner.
10. A user equipment, comprising:

    processor; and

    memory, storing instructions,

    wherein the instructions, when executed by the processor, perform the method of any one of claims 1-9.

Images