CN115622668A - Method performed by user equipment and user equipment - Google Patents

Abstract

The invention provides a method executed by user equipment in a non-connection state, which comprises the following steps: acquiring availability indication information for indicating availability of a CSI-RS resource, the CSI-RS resource being configured for a user equipment in a non-connected state and the availability indication information being transmitted through a time-frequency resource of a PDCCH determined using search space set information; determining a corresponding CSI-RS resource indicated by the availability indication information based on a quasi co-location relationship of the search space set information and the configured CSI-RS resource; and determining the availability of the corresponding CSI-RS resource according to the availability indication information.

Description

Method performed by user equipment and user equipment

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a method performed by a user equipment and a corresponding user equipment.

Background

The user experience is one of the key factors for the success of 5G/NR, and not only the data rate and delay aspects experienced by the user, but also terminal power consumption savings are important aspects. The enhancement technical scheme of terminal power consumption saving is one of the elements of 5G/NR success. Although some existing technologies have been used to save power consumption of the terminal, additional enhanced evolution technology remains one of the key technologies in future development. For example, a power saving technique may be applied to the terminal in the idle state or the inactive state, which is helpful for the terminal device to further reduce power consumption or enhance the capability of receiving signals while ensuring communication capability in the corresponding state, and to obtain some other benefits.

Disclosure of Invention

In order to solve at least some of the above problems, the present invention provides a method executed by a user equipment and the user equipment, which enable a terminal to further obtain accurate measurement or parameter estimation, more sleep time, better signal reception capability, and the like through reception of a reference signal, so that the terminal obtains benefits such as reduction in power consumption and improvement in reception capability, and improves service capability of a network, expands compatibility of the network, and greatly reduces the cost of communication network deployment.

According to the invention, a method performed by a user equipment in a non-connected state is proposed, comprising: acquiring availability indication information for indicating availability of a CSI-RS resource, the CSI-RS resource being configured for a user equipment in a non-connected state and the availability indication information being transmitted through time-frequency resources of a PDCCH determined using search space set information; determining a corresponding CSI-RS resource indicated by the availability indication information based on a quasi co-location relationship of the search space set information and the configured CSI-RS resource; and determining the availability of the corresponding CSI-RS resource according to the availability indication information.

Furthermore, according to the present invention, there is provided a user equipment comprising: a processor; and a memory storing instructions, wherein the instructions, when executed by the processor, perform the method described above.

According to the invention, the terminal can further obtain accurate measurement or parameter estimation, more sleep time or better signal receiving capability and the like through the receiving of the reference signal, so that the terminal obtains the advantages of reducing power consumption, improving receiving capability and the like, 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.

Drawings

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

fig. 1 is a flow diagram of a method performed by a user equipment according to one embodiment of the invention.

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

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

Fig. 4 is a block diagram schematically illustrating a user equipment to which the present invention relates.

Detailed Description

The invention is described in detail below with reference to the drawings and the detailed description. It should be noted that the present invention should not be limited to the specific embodiments described below, which are provided as examples only to convey the scope of the subject matter to those skilled in the art. In addition, for the sake of brevity, detailed descriptions of well-known technologies not directly related to the present invention are omitted to prevent confusion of understanding of the present invention.

In general, all terms used herein are to be interpreted according to their ordinary meaning in the relevant art, unless a different meaning is clearly given and/or implied in the context in which the term is used. All references to a/an/the element, device, component, means, step, etc. are to be interpreted openly as referring to at least one instance of the element, device, component, means, step, etc., unless explicitly stated otherwise. The steps of any method disclosed herein do not have to be performed in the exact order disclosed, unless one step must 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 may be applied to any other embodiment, where appropriate. Likewise, any advantage of any embodiment may apply to any other embodiment, and vice versa.

Embodiments according to the present invention are described in detail below with reference to a 5G/NR mobile communication system and its subsequent evolution as an example application environment. However, it should be noted that the present invention is not limited to the following embodiments, but is applicable to more other wireless communication systems, such as a communication system after 5G and a 4G mobile communication system before 5G, an 802.11 wireless network, and the like.

Some terms to which the present invention relates will be described below, and the terms to which the present invention relates are defined herein, unless otherwise specified. The terms given in the present invention may adopt different naming manners in LTE, LTE-Advanced Pro, NR and other communication systems afterwards or otherwise, but the present invention adopts unified terms, and when applied to a specific system, the terms adopted in the corresponding system can be replaced.

3GPP 3rd Generation Partnership Project, third Generation Partnership Project

Long Term Evolution (LTE) technology

New Radio, new Wireless, new air interface

User Equipment, UE

gNB NR base station

Reduced Capability Device

FR1: frequency range 1 as defined in TS38.104, frequency range 1 defined by TS38.104

FR2 Frequency range 2 as defined in TS38.104, frequency range 2 defined by TS38.104

Bandwidth Part, bandWidth fragment/portion, BWP

SFN System frame number, system frame number

OFDM Orthogonal Frequency Division Multiplexing

CP Cyclic Prefix, cyclic Prefix

Sub-carrier spacing, SCS

RB Resource Block, resource Block

RE Resource Element, resource Element

Common Resource Block (CRB), common Resource Block

PRB Physical Resource Block

Virtual Resource Block (VRB)

REG, resource Element Group

DCI Downlink Control Information

Demodulation Reference Signal (DMRS), demodulation Reference Signal

Channel State Information Reference Signal (CSI-RS)

Tracking Reference Signal (TRS)

NZP-CSI-RS Not-Zero-Power CSI-RS, non-Zero-Power CSI-RS

Cyclic Redundancy Check (CRC)

QCL Quasi co-location, quasi co-location

SIB, 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

Control resource set, control resource set

Physical Broadcast Channel (PBCH)

Physical Downlink Shared Channel (PDSCH)

Physical Downlink Control Channel (PDCCH)

P-RNTI Paging RNTI and Paging radio network temporary identifier

PEI paging early indication

Demodulation reference signals (DM-RS)

MAC Medium Access Control, media Access layer

MAC-CE: MAC Control Element MAC Control cell

The following is a description of the technology associated with the inventive arrangements. Unless otherwise specified, the meanings of the same terms in the specific embodiments are the same as those in the related art.

It should be noted that, for the user, the UE and the terminal device referred to in the present specification, the UE may also be used as the terminal, and the following description is not specifically distinguished and limited. Similarly, the network device is a device for communicating with the terminal, and includes but is not limited to a base station device, a gNB, an eNB, a wireless AP, and the like, and is not specifically distinguished and limited hereinafter. The base station may also be used as one form of network device, and other forms of network devices may be used for replacement when the network device is implemented specifically.

One unit of time-frequency resources in NR is a slot. Depending on network settings, a slot may contain 14 (Normal CP scenario) or 12 (Extended CP scenario) OFDM symbols. Multiple slots may constitute subframes and radio frames. A radio frame may be formed of several time slots, for example, 10 time slots at a subcarrier spacing of 15kHz, using a length of 10 ms, depending on the subcarrier spacing parameter. The terminal can determine the position of the time slot according to the parameters such as the frame number SFN of the wireless frame, the time slot serial number in the wireless frame and the like. The terminal may determine the symbol position for signal transmission in the time domain based on the sequence number of the symbol in the time slot.

The resources in NR may be further divided into resource blocks and resource units. The resource blocks RB may be defined in the frequency domain as

The RBs is 180kHz in the frequency domain for a contiguous number of subcarriers, e.g., for a subcarrier spacing (SCS) of 15 kHz. For subcarrier spacing 15kHZ x 2 ^μ The resource element RE represents 1 subcarrier in the frequency domain and 1 OFDM symbol in the time domain. Mu can take on integer values of 0-4 in different configurations. The signals within the bandwidth may be numbered according to the SCS used. For example, the PRB over the frequency domain within the bandwidth may be numbered 0,1,2, \8230;, N _ BWP _ μ, to determine the position of the corresponding resource in the bandwidth.

According to different situations such as whether connection with a wireless network is established or not and whether the wireless connection is suspended or not, a terminal in the network can be divided into different states, such as a connected state, an idle state, an inactive state and the like. The connected terminal establishes wireless connection with the network and is used for data transmission or related service processing. A non-connected terminal, such as an idle terminal or a non-activated terminal, also maintains a certain contact with the network, and the terminal needs to monitor broadcast messages and paging messages sent by the network according to related configuration or parameters, or perform related measurements, and the like. In order to avoid redundancy, in the related text of the present invention, the related actions for the idle terminal or the network may also be applied to the inactive terminal, if not specifically described. Other user states similar to the idle state can also be processed in analogy, and are not described in detail.

The terminal may be in a sleep state to save power consumption if the terminal in an idle or inactive state has no signals to receive, transmit, measure, etc. The terminal can be in different sleep modes according to different channel conditions or services to be processed, etc. Such as a light sleep mode for a brief sleep when there is a new signal to process in a short time. For example, the deep sleep mode can reduce the power consumption of the terminal more than the light sleep mode when the terminal has no new signal to process for a longer time. Generally, under the condition that the service function is not influenced, the terminal is in the sleep mode, so that the power consumption of the terminal can be effectively reduced, and the user experience is improved.

Some pre-processing is often required at or before the terminal receives the data signal. For example, the terminal may adjust Automatic Gain Control (AGC) parameters so that the processed data is within a suitable dynamic range to achieve better reception. Or, the terminal needs to perform time-frequency tracking, and accordingly corrects the signal or data to be processed according to the time offset or frequency offset parameter of the reference signal estimation signal, so as to obtain better receiving performance. The terminal may also have some other processing to optimize data processing, improve user experience, etc., which are not described one by one here. The terminal can use the reference signal sent by the network to carry out preprocessing. For example, the terminal may perform time-frequency synchronization and other related actions according to one or more synchronization signals.

The network can configure and transmit reference signals to the terminal, and the reference signals are used for channel measurement, channel parameter estimation, mobility evaluation, spatial parameter estimation and the like of the terminal, so that the functions of wireless resource management, auxiliary data signal reception and the like are realized. For example, the terminal may receive a synchronization reference signal sent by the network, perform AGC adjustment or estimation of time-frequency parameters, and the like. Alternatively, the terminal may perform channel measurement, beam management, and the like by receiving a CSI-RS signal transmitted by the network.

And the network configures and sends the CSI-RS reference signal for the terminal to perform functions of channel measurement, beam management and the like. The relevant parameters of the CSI-RS can be configured to the UE in the form of CSI-RS resources, and one terminal can configure one or more CSI-RS resources. One or more CSI-RSs may also constitute one set of CSI-RS resources, which one or more sets of resources may be configured for a terminal. Each CSI-RS resource defines a CSI-RS signal, which may include one or more configuration parameters, such as time domain period and offset configuration, frequency domain location and bandwidth configuration, power configuration, code division parameter configuration, QCL configuration, frequency domain density parameter, subcarrier location \8230 \ 8230;, and the like. The terminal may determine and receive the CSI-RS signal according to the configured parameters for functions such as measurement or signal reception, for example, receiving the CSI-RS signal at a plurality of 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. CSI-RS can also be classified into periodic, semi-permanent, and aperiodic signal types, depending on the configuration period. The periodic CSI-RS, namely the configured CSI-RS, appears repeatedly on the time-frequency resource according to a certain period. Semi-permanent and aperiodic CSI-RS resources need to be activated by means of MAC-CE or DCI indication after configuration. The terminal can realize different functions according to the resources of different CSI-RSs, related report instructions and the like. For example, the CSI-RS signal used for time-frequency tracking may also be referred to as TRS. The invention uniformly takes the CSI-RS as the substitute of the CSI-RS with different types or parameters applicable to the invention or other signals capable of realizing similar functions.

The network sends the SSB signals according to a certain period, and a plurality of SSB signals can be contained in one period. The network may use spatial filters, otherwise known as beams, for transmission and reception of signals, and the beams used in the network may be analog beams or digital beams or a mixture of both. The network transmits the SSBs using corresponding beams, for example, the network transmits the SSBs using 8 beams in one period, and then the SSBs in the transmission period may be numbered SSBs 0 to SSBs 7, which respectively represent SSBs transmitted using different beams.

In the network, QCL parameters are used to characterize the spatial relationship between antenna ports of different signals, that is, two signals satisfying the QCL relationship have a certain spatial channel correlation, and may be referred to as two signals satisfying the QCL relationship. For example, the network configures two signals to satisfy a certain QCL-type relationship, and the terminal may use the same parameters when processing the two signals, or parameters that may be derived from one signal may be applied to the processing of the other signal. For example, the QCL type is QCL-typeA, and parameters such as doppler shift, doppler spread, average delay, delay spread, etc. obtained from one signal are applied to another signal or shared. For example, the QCL type is QCL-typeC, and a signal doppler shift, a delay spread parameter, etc. can be obtained from a signal. Also, for example, the QCL type is QCL-typeD, and a signal beam parameter information is obtained from a signal. There are also several other QCL types that the user can identify when applying based on the relevant parameters. The user may also apply the correlation parameters between more signals that mutually satisfy the QCL relationship. Some channel transmissions use demodulation reference signals (DM-RS), for example, the PDCCH DM-RS is used for PDCCH transmission, data transmission in the channel uses the same spatial parameters as the DM-RS, and the QCL relationship between the reference signal and the DMRS port of the PDCCH can be referred to as QCL relationship between the PDCCH and the reference signal.

The CSI-RS signals are transmitted using beams, and the network may configure the reference signal of the CSI-RS port of the CSI-RS resource as a signal satisfying a QCL relationship therewith. For example, the network may configure the SSBs i as a reference signal of a CSI-RS signal that satisfies a certain QCL relationship, and the terminal may consider the SSBs i to be the same as certain channel parameters of the CSI-RS, such as spatial signal parameters, doppler shift parameters, and the like. If other signals and SSB i at the terminal side meet the QCL, the terminal can also obtain relevant parameters through the reception or measurement of the CSI-RS, and the relevant parameters are applied to the reception of the signals.

The terminal in the idle state or the inactive state needs to periodically receive broadcast or paging information of the network or perform related measurement, and at these times, the terminal needs to wake up in advance to implement actions such as synchronization. For example, when receiving paging information, the terminal may receive an SSB reference signal sent by the network before the paging information according to factors such as its own capability, channel conditions, and the like, perform AGC, time-frequency tracking, and the like, and then receive a corresponding paging signal, thereby obtaining a good receiving effect. The number of times or duration that the terminal needs to wake up from sleep mode to do these pre-processing varies due to various internal or external factors. For example, when the channel condition is poor, the receiving quality of the relevant SSB reference signal is poor, or the processing capability of the terminal is limited, the terminal needs to wake up to receive multiple SSB reference signals for multiple times, so as to achieve a better receiving effect. For another example, the configured reference signal is far away from the signal to be received, and the terminal may also need to receive the SSB reference signal more times or keep active for a longer time to obtain a better receiving effect, so that the terminal usually consumes more power to implement the related function.

The user terminal in idle state or inactive state can utilize SSB to implement relevant AGC or time-frequency parameter estimation. The period and time-frequency position of the configured SSB in the cell are often fixed, and may not meet the requirements of receiving signals and reducing power consumption of different users, for example, some terminals in the cell may need to consume more power to keep in an active state when receiving paging signals at a position farther from the SSB. Alternatively, 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 may provide an additional reference signal for the terminal to receive, so that the terminal can obtain the required parameters or information more quickly, thereby reducing the time or number of times of waking up to achieve a better energy saving effect. For example, the network may configure CSI-RS signals for use as reference signals for idle or inactive users. For example, the network configures several non-zero power CSI-RS signals in SIB broadcast information for use as reference signals for idle or inactive users. Due to the characteristics of the CSI-RS, such as frequency domain and time domain, for example, having a larger bandwidth, more symbols, or being closer to a data signal to be received by the terminal, the time that the terminal is in a high power consumption state can be effectively reduced, for example, a required parameter can be obtained at one time, and the number of times of waking up is reduced. Or fewer symbols may be used to obtain the desired parameters, etc. The terminal can reduce the energy consumption of the terminal through the reception and utilization of the CSI-RS signal.

The network may send CSI-RS related configuration messages to idle or active terminals via signaling messages, such as informing terminals within the network of configuration parameters via system message blocks SIB. The network may transmit the configuration message of the CSI-RS through the SIB by periodic transmission or transmission according to a request of the terminal. The terminal can obtain the message according to the appropriate signaling and flow, thereby obtaining the relevant configuration parameters of the CSI-RS. The configuration parameters may also be sent to the terminal via RRC messages. For example, the network device carries related parameters in an RRC release message, and the terminal may receive the related messages when the radio link is released, so as to obtain a configuration of the CSI-RS, which is used for processing in an idle state or an inactive state later. The configuration parameters of the CSI-RS can include the period 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 also use the CSI-RS signals transmitted to the connected-state users to share the CSI-RS signals for the idle-state users instead of using separate reference signals.

The CSI-RS resources configured by the network may be unavailable to non-connected users by default and the terminal needs to receive additional indications of the network to determine the availability of these resources. In addition, the network can activate or deactivate part or all of the configured CSI-RS signals according to the energy saving requirement or the reason that other users in the network do not use the resources any more. At this time, the terminals in the non-connected state using the CSI-RS signals need to determine whether the CSI-RS signals are still available.

The idle or inactive state terminal may determine one or more CSI-RS resources according to the configuration of the network. Whether or not CSI-RS signals are actually transmitted on these resources may be controlled by the network. The network may indicate the available or unavailable status of the CSI-RS resources through physical layer or higher layer signaling. The terminal receives indication information (availability indication information) of the network and determines the state of the configured CSI-RS resource. For example, the network indicates the state of the associated CSI-RS resource at 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 relevant processing according to the indication information and other parameters, that is, determines whether the configured CSI-RS resources are valid or available at a certain time-frequency position corresponding to the cycle, or whether the receiving opportunities of the respective CSI-RS related to the CSI-RS resources are valid or available. The terminal determines that the CSI-RS signal is transmitted on the available CSI-RS resources. For example, if the network indicates, via physical layer signaling, that the state of the associated CSI-RS resource is available, then the terminal determines, based on the indication, that a valid CSI-RS signal may be received at the relevant CSI-RS receiver(s), power savings as described above may be achieved by utilizing the CSI-RS signal as a reference signal. The indication information is used to indicate an available state of the CSI-RS, and is referred to as availability information. The availability information may also be expressed as validity information, activatability information, etc., and is collectively described below with the availability information.

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

Fig. 1 is a flow diagram of a method performed by a user equipment according to one embodiment of the invention.

As shown in fig. 1, in S102, availability indication information indicating availability of CSI-RS resources is acquired. The CSI-RS resource may be configured for the user equipment in a non-connected state, and the availability indication information may be transmitted through a time-frequency resource of the PDCCH determined using the search space set information. In one example, a PDCCH detection opportunity for a PDCCH may be determined based on search space set information, and the availability indication information may be obtained based on the PDCCH detection opportunity. Specific details will be described in the following examples 1 and 2.

Then, in S104, a corresponding CSI-RS resource for which availability is indicated by the availability indication information is determined based on the quasi co-located relationship of the search space set information and the configured CSI-RS resource.

Next, in S106, the availability of the corresponding CSI-RS resource is determined according to the availability indication information. When the CSI-RS resources are available, the ue in the non-connected state may receive the CSI-RS signal on the available CSI-RS resources as a reference signal, thereby achieving the above-described power consumption savings.

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

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

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

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

Wherein, the above S206 may be implemented by the process shown in fig. 3. Fig. 3 is a flowchart of a process of determining corresponding CSI-RS resources in a method performed by a user equipment according to one embodiment of the present invention.

As shown in fig. 3, in S302, an SSB number corresponding to a PDCCH detection opportunity is specified based on search space set information. The specific implementation of the process can be referred to the following description of example 1 and example 2.

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

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

In another example, one PDCCH detection opportunity may correspond to multiple SSB sequence numbers. At this time, the PDCCH detection opportunity cannot uniquely determine the SSB with which the quasi co-location relationship is actually satisfied, i.e., cannot determine the actual quasi co-located reference signal. In this case, the ue may regard SSBs corresponding to all SSB numbers corresponding to the PDCCH detection opportunity as quasi co-located reference signals corresponding to the PDCCH detection opportunity. Further, the CSI-RS resources satisfying a quasi co-location relationship with the plurality of SSBs considered as quasi co-located reference signals may all 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 an actual quasi co-located reference signal cannot be uniquely determined because one PDCCH detection opportunity may correspond to a plurality of SSB numbers, it is determined that the availability of CSI-RS resources satisfying the quasi co-located reference signal with a plurality of SSBs corresponding to the PDCCH detection opportunity.

In one example, if one PDCCH detection opportunity corresponds to multiple SSB sequence numbers, the actually transmitted SSB corresponding to the PDCCH detection opportunity may be determined based on SSB transmission parameters configured by the network for the PDCCH detection opportunity corresponding to the multiple SSB sequence numbers. 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 having a quasi-co-location relationship with the actually transmitted SSB may be determined.

There may be a plurality of actually transmitted SSBs corresponding to the PDCCH detection opportunity. For this case, in one example, the availability indication information may include corresponding indication information indicating a corresponding CSI-RS resource for which availability is indicated by the availability indication information. At this time, when one PDCCH detection opportunity corresponds to a plurality of SSB sequence numbers, a corresponding CSI-RS resource for which availability is indicated by the availability indication information may be determined based on the correspondence indication information.

Further, in case that the availability indication information may include corresponding indication information indicating a corresponding CSI-RS resource whose availability is indicated by the availability indication information, if one PDCCH detection opportunity corresponds to a plurality of SSB sequence numbers, the user equipment may also determine the corresponding CSI-RS resource whose availability is indicated by the availability indication information directly based on the corresponding indication information.

The details of the present invention are described below in example 1 and example 2.

[ example 1 ]

The network may transmit 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 detects DCI on the configured resources, and when the DCI message on the channel is correctly received, the terminal can perform related actions according to the content indicated by the DCI. The PDCCH is transmitted using beams, and the network may configure a reference signal of which the DM-RS port of the PDCCH satisfies a QCL relationship, for example, configure a certain SSB as the QCL reference signal of the PDCCH. The terminal may also determine a default QCL reference signal of the PDCCH according to the configuration of the PDCCH, for example, determine a SSB as its reference signal according to the location of the time-frequency resource. The configuration parameters of the PDCCH channel include a search space set parameter, a CORESET parameter, and the like. The terminal may detect the PDCCH candidate set, referred to as PDCCH detection opportunity, on the resources determined by the associated search space set and CORESET according to the configuration. The terminal may receive the PDCCH according to the spatial filter parameters of the QCL reference signal of the PDCCH on a PDCCH detection opportunity. The search space set and the identity of CORESET may be 0 values or non-0 values. When the search space identifier is 0, the set of search spaces 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 by controlResourceSetZero and the common search space set searchSpace0 by searchSpace zero. The terminal may determine parameters of a plurality of common search space sets for type0-PDCCH according to the configuration parameters, the minimum bandwidth parameter of the frequency band in which the signal is located, the subcarrier spacing parameter indicated by the network for the SIB1 signal, the subcarrier spacing parameter used by the SSB, and the like, where the multiplexing mode (SS/PBCH block and core multiplexing pattern) of the SSB and the core set used by the serving cell may be any one of pattern1, pattern2, pattern3, the bandwidth and RB location of the core set, the time slot and symbol of the search space, and the like. The terminal may also determine common search space set parameters for type0-PDCCH, including the associated offset parameter O and number parameter M and the relation of these PDCCH detection opportunities to the SSB sequence numbers.

In a cell using the multiplexing pattern1 of SSB and CORESET, a PDCCH satisfying a QCL relationship with one SSB sequence number may be transmitted on CORESET on two consecutive slots. The initial symbol determined by the terminal in the public search space set is n ₀ The PDCCH is detected on PDCCH detection opportunities of two consecutive slots. For example, for SSB i, the UE passes the formula

The starting slot number n0 of the relevant consecutive slot is determined. And, if

In meeting SFN _C mod2=0 over a radio frame. If it is not

In meeting SFN _C mod2=1 over a radio frame. Wherein the O and M parameters are determined according to a searchSpacezero parameter indicated by the network, SFN _C In order to determine the radio frame number according to the BWP in which the PDCCH is located,

is the number of slots in the radio frame determined from the PDCCH subcarrier parameter mu. The searchSpaceZero parameter may also determine the starting symbol position on the slot for each PDCCH detection opportunity. Some of the parameters used on these detection opportunities, such as symbol length on the slot, frequency domain bandwidth location, etc., are composed of the same CORESET parameters. Thus depending on the network configurationThere may be overlap between PDCCH detection opportunities using the same time slot corresponding to different SSB sequence numbers. 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 starting symbol is 0 according to the network configuration, the terminal may determine that two consecutive slot numbers of the PDCCH corresponding to the SSB0 are 0 and 1, and there are two consecutive slot numbers of the PDCCH corresponding to the SSB0

That is, the terminal is satisfying the SFN _C Slot 0 on the radio frame with mod2=0 and the PDCCH detection opportunity on slot 1 make type0-PDCCH detection. Similarly, the terminal may determine that the slot numbers of the detection opportunities corresponding to SSB1 are 1 and 2, the slot numbers of the detection opportunities corresponding to SSB2 are 2 and 3, and so on. In this configuration, the network may transmit the PDCCH corresponding to SSB0 on slot 0 or slot 1, the PDCCH corresponding to SSB1 on slot 1 or slot 2, and so on. In this case, the terminal cannot determine, from the location of the detection opportunity, that the PDCCH detected at the location satisfies the SSB number of the QCL, for example, the PDCCH satisfying the QCL with SSB0 may be received in slot 1, or the PDCCH satisfying the QCL with SSB1 may be received in slot 1, and the terminal cannot determine, from the PDCCH received in slot 1, that the PDCCH satisfies the QCL relationship with SSB0 or SSB 1. Similarly, similar situations may exist on other timeslots. Similarly, when the M parameter is 1/2 and the O parameter is 0, the terminal may determine that the first set of CORESET symbols on slot 0 and slot 1 corresponds to SSB0, the second set of CORESET symbols on slot 0 and slot 1 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 set of CORESET on slot 1 corresponds to SSB0 or SSB2, the terminal cannot determine whether the PDCCH detected on the second set of CORESET on slot 1 corresponds to SSB1 or SSB3, and so on. Similarly, similar situations may exist on other timeslots.

In a cell using pattern1, preferable values of M include 1,1/2, and the like. According to the method for determining the PDCCH detection opportunity time slot on the search space set0, when the value of M is 1 or 1/2, PDCCH detection opportunities of two adjacent time slots used by different SSB serial numbers are overlapped. When the value of M is 2, the PDCCH detection opportunities of two adjacent time slots corresponding to one SSB serial 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 opportunities determined by the search space set0 and CORESET0 are in one-to-one correspondence with the SSB numbers, the terminal may determine the positions of the PDCCH opportunities that satisfy the QCL relationship with the SSB numbers, and the PDCCH detection opportunities corresponding to the SSBs do not overlap. Therefore, the terminal may determine that each PDCCH detection opportunity corresponds to one SSB sequence number or two SSB sequence numbers according to the configuration of the network.

The network may indicate the status of the CSI-RS resources configured through the SIB through various physical layer signaling. For example, the network indicates the status of the CSI-RS resources through a field in the DCI. The DCI may be a signal of different purposes, such as a PEI signal, such as a paging DCI, etc. The terminal receives the PDCCH on time-frequency resources related to PDCCH detection opportunities for indicating the state of the CSI-RS resources, and detects the related DCI. The terminal needs to determine the correspondence of PDCCH detection opportunities to the indicated CSI-RS resources, in order to determine which CSI-RS resources are indicated by the DCI in the detected PDCCH.

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

The DCI signal for indicating CSI-RS availability may be transmitted using time-frequency resources of the PDCCH determined by search space set 0. The terminal detects the DCI signal on the PDCCH detection opportunity determined by the search space set 0. The terminal may determine a correspondence 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 one PDCCH detection opportunity corresponds to two SSBs. In other cases, the terminal may determine that one PDCCH detection opportunity corresponds to one SSB.

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

In an alternative embodiment, the terminal may determine two or one SSB corresponding to each PDCCH detection opportunity for indicating CSI-RS resource availability according to configuration parameters of the network, and the terminal may determine the availability of the CSI-RS signal indicated by the DCI according to the determined correspondence relationship with the one or two SSBs. When one PDCCH detection opportunity determined on the bandwidth corresponds to one SSB, the terminal can accurately determine the SSB that satisfies the quasi-co-location relationship with the PDCCH detection opportunity, that is, the SSB uniquely corresponding thereto. At this time, the terminal may determine, according to a quasi co-location relationship of the CRI-RS resource, the CRI-RS resource that satisfies the quasi co-location relationship with the SSB, where the availability of the CRI-RS resource is indicated by availability indication information in DCI detected on the PDCCH detection opportunity. Further, the terminal may determine the availability of the CSI-RS resource corresponding to the SSB.

In addition, when one PDCCH on the determined bandwidth corresponds to two SSB numbers, the terminal cannot accurately and uniquely determine which of the two SSBs corresponding to the two SSB numbers is the SSB that satisfies the quasi co-location relationship with the PDCCH detection opportunity, and thus, the terminal may regard both of the two SSBs as the quasi co-location reference signal. By "treating the two SSBs as" quasi co-located reference signals "it is not meant that the two SSBs actually satisfy a quasi co-located relationship with the PDCCH detection opportunity, but rather that the two SSBs are treated as quasi co-located reference signals that satisfy a quasi co-located relationship with the PDCCH regardless of whether they actually do in fact satisfy a quasi co-located relationship with the PDCCH detection opportunity, in order to further successfully determine availability of CSI-RS resources, if a quasi co-located reference signal cannot be uniquely determined. Further, the terminal may identify the CSI-RS resources that satisfy the quasi co-location relationship with the two SSBs. The terminal may then 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. For a specific example, when the cell is configured as pattern1, if the M parameter indicates 1 or 1/2, the terminal may determine that the PDCCH detection opportunities of the first time slot and the last time slot in a period have a correspondence with one SSB, and the PDCCH detection opportunities of other time slots have a correspondence with two SSBs. And the terminal determines that the DCI indicates the availability of CSI-RS resources corresponding to the two SSB serial numbers in all the PDCCH detection opportunities. When the DCI is on a PDCCH detection opportunity corresponding to one SSB, the terminal determines that the availability of CSI-RS resources corresponding to two same SSB serial numbers are indicated on the DCI.

As a specific embodiment, when the terminal determines that one PDCCH detection opportunity has a correspondence relationship with two SSBs, the terminal determines availability information indicating CSI-RS including the two SSBs as QCL reference signals in the DCI. The terminal may determine the availability of the CSI-RS resource corresponding to each SSB sequence number according to the correspondence. For example, the terminal detects that the availability of CSI-RS resources using SSB0 and SSB1 as QCL reference signals is included in the DCI in the PDCCH corresponding to SSB0 and SSB 1. Optionally, the terminal determines availability of the CSI-RS resource of the QCL reference signal according to the sequence number of the SSB. And the terminal determines the length N of the availability bit of the CSI-RS resource which satisfies the QCL relationship with a certain SSB serial number. For example, the network indicates the availability of CSI-RS resources that satisfy a QCL relationship with a certain SSB sequence number in the form of a bitmap. The terminal may determine the length N of the bitmap according to a certain rule, for example, according to the number of CSI-RS resource groups. For example, the terminal may determine the length N of the available bits according to the coding rules. The network may also indicate the availability of the CSI-RS resource that satisfies the QCL relationship with a certain SSB sequence number in other manners, which is not limited herein. The terminal determines that the availability bits of the CSI-RS resources which satisfy the QCL relationship with the two SSB serial numbers are arranged in sequence, for example, the terminal determines that the availability of the CSI-RS corresponding to the SSB with the smaller serial number is indicated by using N1 bits, and the availability of the CSI-RS corresponding to the SSB with the larger serial number is indicated by using N2 bits. And the terminal determines the availability of the CSI-RS resource with the SSB with the smaller indication sequence number of the first N1 bits, and determines the availability of the CSI-RS resource with the larger indication sequence number of the subsequent N2 bits, wherein the SSB with the smaller indication sequence number of the subsequent N2 bits meets the QCL relationship. The terminal may determine that the number of bits indicating CSI-RS resource availability in the DCI is N1+ N2. As a specific embodiment, when the terminal determines that one PDCCH detection opportunity has a correspondence relationship with one SSB, the terminal determines availability information indicating CSI-RS including one SSB as a QCL reference signal in the DCI. For example, the terminal determines the length N1 of the availability bits of the CSI-RS resource that satisfy 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 alternative embodiment, the terminal may determine two or one SSB corresponding to each PDCCH detection opportunity for indicating CSI-RS resource availability according to configuration parameters of the network, and the terminal may determine the availability of the CSI-RS signal indicated by the DCI according to the determined correspondence relationship with the one or two SSBs. When all PDCCH detection opportunities determined on the bandwidth correspond to one SSB, the terminal determines the availability of CSI-RS resources corresponding to one SSB indicated in the DCI. When at least one PDCCH on the determined bandwidth corresponds to two SSB serial numbers, the terminal determines that the DCI indicates the availability of CSI-RS resources corresponding to the two SSB serial numbers. For a specific 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 correspondence between PDCCH detection opportunities of the first time slot and the last time slot in one cycle and one SSB, and there is a correspondence between PDCCH detection opportunities of other time slots and 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 two SSB sequence numbers. At a PDCCH detection opportunity corresponding to one SSB, the terminal determines that the availability of CSI-RS resources corresponding to two same SSB sequence numbers are indicated on the detected DCI.

In an optional embodiment, the terminal may determine two or one SSB corresponding to each PDCCH detection opportunity according to configuration parameters of the network, determine a correspondence between DCI and SSB serial numbers according to the bit indication, and determine availability of a CSI-RS signal indicated by the DCI according to the determined correspondence with the SSBs. When the terminal determines that one PDCCH detection opportunity has a corresponding relation with two SSBs, the terminal determines which SSB indicated by the DCI satisfies the availability of the CSI-RS resource of the QCL relation according to the bit indication. Optionally, bit 0 is used to indicate that the DCI indicates the availability of the CSI-RS resource corresponding to the smaller SSB sequence number, and bit 1 indicates that the DCI indicates the availability of the CSI-RS resource corresponding to the larger SSB sequence number. Optionally, bit 1 is used to indicate that the DCI indicates the availability of the CSI-RS resource corresponding to the smaller SSB sequence number, and bit 0 indicates that the DCI indicates the availability of the CSI-RS resource corresponding to the larger SSB sequence number. Optionally, the bit indication is a bit in DCI detected on the PDCCH detection opportunity. Optionally, when one PDCCH detection opportunity may have a correspondence relationship with more than two SSBs, more bits are used to indicate the availability of CSI-RS resources corresponding to the SSB sequence number indicated by the DCI, such as using the sequence number of the corresponding SSB sequence number.

Optionally, the terminal may determine two or one SSB corresponding to each PDCCH detection opportunity according to configuration parameters of the network, and the terminal determines that the length of the bit indication is 0 or 1 according to the two or one SSB corresponding to each PDCCH detection opportunity. Specifically, when the terminal determines that one PDCCH detection opportunity has a correspondence relationship with two SSBs, the terminal determines that the bit indication length 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 a PDCCH detection opportunity has a corresponding relation with an SSB, the terminal determines that the bit indication length 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 relation. Optionally, the availability information indicates the availability of the corresponding CSI-RS resource in a bitmap or coding manner, and the terminal determines the availability of the CSI-RS resource indicated by the bitmap or coding according to the usage bit indication.

[ example 2 ]

Certain details that are the same as or similar to the preceding embodiments, with respect to which reference may be made, have been omitted from the following description of another group of embodiments.

The network may indicate the parameters of SSB transmission through SIB or RRC message, for example, the network indicates the sequence number of the SSB actually transmitted through the SSB-positioninburst information element in SIB 1. The SSB-positioninglnburst may further comprise a plurality of parameters, such as the network indicates the sending of all SSBs or individual SSBs in each SSB packet via an inoneegroup parameter (intra-group identification parameter) therein. When the maximum number of SSBs in each half frame is 4, 4 valid bits are used to indicate the transmission of each SSB. When the maximum number of SSBs in each half frame is 8, 8 bits are used to indicate the transmission of the SSBs. The leftmost bit of the inoneegroup parameter corresponds to SSB with a sequence number of 0. When the maximum number of SSBs in a half frame is 64, every 8 SSBs may be grouped into one group, and 8 bits are used to indicate the SSB transmission condition in each group. The leftmost bit in the inoneegroup corresponds to the first SSB sequence number in each group, i.e. the corresponding SSB sequence numbers are 0,8, 16, etc., and so on for the other bits. Setting each bit in the inoneegroup to be 0 indicates that the corresponding SSB is not actually transmitted, and setting the bit to be 1 indicates that the SSB corresponding to the relevant sequence number is transmitted. When the maximum number of SSBs in a half frame is greater than 8, for example, 64, the network further sends whether each antenna group exists through an 8-bit grouppiense parameter (group existence parameter). The leftmost bit of the grouppinse is associated with SSB sequence numbers 0-7, the second bit is associated with SSB sequence numbers 8-15, and so on. The use of a bit set to 0 indicates that the SSB of the group is not present or that no SSB of the group is transmitted. Setting each bit in groupPresence to 1 indicates that the group SSB transmits or does not transmit according to the indication in inonnegroup. In this way, the network can indicate all the SSB sequence numbers actually sent in the half of the frame in various scenarios. The network may also indicate the SSB sequence number actually sent in the system by other means, such as when the maximum number of SSBs in a half frame is 64, indicating the transmission status of all SSBs in the half frame by a 64-bit bitmap. The terminal can obtain the SSB actually transmitted in the half frame through the configuration of the network. The terminal may obtain information of the SSBs actually transmitted at each period according to the period parameters of the SSBs.

In an alternative embodiment, the terminal determines two or one actually transmitted SSBs corresponding to each PDCCH detection opportunity according to the configuration parameters of the network, and the terminal determines the availability of the CSI-RS signal indicated by the DCI detected on the PDCCH detection opportunity according to the determined correspondence relationship with the one or two SSBs. 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, the terminal may determine that two consecutive slot numbers of the PDCCH corresponding to the SSB0 are 0 and 1, and there are two consecutive slot numbers of the PDCCH corresponding to the SSB0

That is, the terminal is satisfying the SFN _C And detecting type0-PDCCH by using a PDCCH detection opportunity at a time slot 0 and a time slot 1 of a radio frame with mod2= 0. Similarly, the terminal may determine that the slot numbers of the detection opportunities corresponding to SSB1 are 1 and 2, the slot numbers of the detection opportunities corresponding to SSB2 are 2 and 3, and so on. In this configuration, the network may transmit the PDCCH corresponding to SSB0 on slot 0 or slot 1, the PDCCH corresponding to SSB1 on slot 1 or slot 2, and so on. If the cell has a maximum of 4 SSB beams according to the network configuration, and the actually transmitted SSBs indicated by the bitmap 0101 are SSB0 and SSB2. Then for SSB0 on the cell, for PDCCH detection opportunities with slot numbers 0 and 1 for PDCCH detection opportunities, slot numbers 1 and 2 for PDCCH detection opportunities corresponding to SSB1, slot numbers 2 and 3 for PDCCH detection opportunities corresponding to SSB2, and slot numbers 2 and 3 for PDCCH detection opportunities corresponding to SSB2. The terminal may determine that timeslots 0 and 1 correspond to an actually transmitted SSB0 and timeslots 2 and 3 correspond to an actually transmitted SSB2 according to the configuration of the network.

In an alternative embodiment, the terminal may determine two or one actually transmitted SSBs corresponding to each PDCCH detection opportunity according to the configuration parameters of the network, and the terminal may determine the availability of the CSI-RS signal indicated by the DCI according to the determined correspondence relationship with the one or two SSBs. And when the determined PDCCH corresponds to one actually transmitted SSB, the terminal determines the availability of the CSI-RS resource corresponding to one SSB indicated in the DCI. When the determined PDCCH corresponds to two SSB serial numbers which are actually transmitted, the terminal determines that the DCI indicates the availability of CSI-RS resources corresponding to the two SSB serial numbers. Specifically, when the terminal determines that one PDCCH detection opportunity has a correspondence relationship with two actually transmitted SSBs, the terminal determines the availability information of the CSI-RS indicating that two SSBs are included in the DCI as QCL reference signals. The terminal may respectively determine the availability of the CSI-RS resource corresponding to each SSB sequence number according to the correspondence. For example, the terminal detects that the availability of CSI-RS resources using SSB0 and SSB1 as QCL reference signals is included in the DCI in the PDCCH corresponding to SSB0 and SSB 1. Optionally, the terminal determines the availability of the CSI-RS resource of the QCL reference signal according to the sequence number of the SSB. And the terminal determines the length N of the available bits of the CSI-RS resource which satisfies the QCL relation with a certain SSB serial number. For example, the network indicates the availability of CSI-RS resources that satisfy a QCL relationship with a certain SSB sequence number in the form of a bitmap. The terminal may determine the length of the bitmap according to a certain rule, for example, the terminal may determine the length of the bitmap as N according to the number of CSI-RS resource groups. The network may also indicate the availability of the CSI-RS resource that satisfies the QCL relationship with a certain SSB sequence number by other means, such as by encoding, which is not limited herein. For example, the terminal may determine the length N of the available bits according to the rules of the encoding. The terminal determines that the availability bits of the CSI-RS resources whose sequence numbers satisfy the QCL relationship with the two SSBs are arranged in sequence, for example, the terminal determines that the first N1 bits indicate the availability of the CSI-RS resources whose sequence numbers satisfy the QCL relationship with the SSBs having smaller sequence numbers, and the terminal determines that the subsequent N2 bits indicate the availability of the CSI-RS resources whose sequence numbers satisfy the QCL relationship with the SSBs having larger sequence numbers. The terminal may determine the number of bits in the DCI indicating the availability of the CSI-RS resource to be N1+ N2. Specifically, when the terminal determines that a PDCCH detection opportunity has a correspondence with an actually transmitted SSB, the terminal determines that the DCI includes the availability information of the CSI-RS indicating that the SSB is used as a QCL reference signal. For example, the terminal determines the length N1 of the availability bits of the CSI-RS resource satisfying the QCL relationship with a certain SSB sequence number. The terminal may determine the number of bits indicating CSI-RS resource availability in the DCI as N1.

In an alternative embodiment, the terminal may determine two or one actually transmitted SSBs corresponding to each PDCCH detection opportunity for indicating CSI-RS resource availability according to the configuration parameters of the network, and the terminal may determine the availability of the CSI-RS signal indicated by the DCI according to the determined correspondence relationship with the one or two SSBs. When all PDCCHs determined on the bandwidth correspond to one SSB, the terminal determines the availability of the CSI-RS resource corresponding to the SSB indicated in the DCI. When at least one PDCCH on the bandwidth corresponds to two SSB serial numbers, the terminal determines that the DCI indicates the availability of CSI-RS resources corresponding to the two SSB serial numbers. For a specific 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 correspondence between PDCCH detection opportunities of the first time slot and the last time slot in one cycle and one SSB, and there is a correspondence between PDCCH detection opportunities of other time slots and two SSBs. And the terminal determines that the DCI indicates the availability of CSI-RS resources corresponding to the two SSB serial numbers in all the PDCCH detection opportunities. When the DCI is on a PDCCH detection opportunity corresponding to one SSB, the terminal determines that the availability of CSI-RS resources corresponding to two same SSB serial numbers is indicated on the DCI.

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

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

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

As a modification, a user equipment capable of executing the method performed by the user equipment described in detail above of the present invention is described below with reference to fig. 4.

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, or the like. The memory 42 may include, for example, volatile memory (e.g., random access memory RAM), a Hard Disk Drive (HDD), non-volatile memory (e.g., flash memory), or other memory, among others. The memory 42 has stored thereon program instructions. Which when executed by the processor 41 may perform the above-described method performed by the user equipment as detailed in the present invention.

The method of the invention and the apparatus involved have been described above in connection with preferred embodiments. It will be appreciated by those skilled in the art that the above illustrated approaches are exemplary only, and that the various embodiments described above can be combined with each other without conflict. The method of the present invention is not limited to the steps or sequence shown above. The network nodes and user equipment shown above may comprise further modules, e.g. modules that may be developed or developed in the future, which may be available to a base station, MME, or UE, etc. The various identifiers shown above are exemplary only and not limiting, and the invention is not limited to the specific cells as examples of such identifiers. Many variations and modifications may be made by those skilled in the art in light of the teachings of the illustrative embodiments.

It should be understood that the above-described embodiments of the present invention can be implemented by software, hardware, or a combination of both software and hardware. For example, various components within the base station and the user equipment in the above embodiments may be implemented by various means, including but not limited to: analog circuit devices, digital Signal Processing (DSP) circuits, programmable processors, application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs), programmable logic devices (CPLDs), and the like.

In this application, a "base station" may refer to a mobile communication data and control switching center with a large transmission power and a wide coverage area, and includes functions of resource allocation scheduling, data receiving and transmitting, and the like. "user equipment" may refer to a user mobile terminal, including, for example, a mobile phone, a notebook, etc., which may wirelessly communicate with a base station or a micro base station.

Furthermore, embodiments of the invention disclosed herein may be implemented on a computer program product. More specifically, the computer program product is one of the following: there is a computer readable medium having computer program logic encoded thereon that, when executed on a computing device, provides related operations for implementing the above-described aspects of the present invention. When executed on at least one processor of a computing system, the computer program logic causes the processor to perform the operations (methods) described in embodiments of the present invention. Such arrangements of the invention are typically provided as downloadable software images, shared databases, etc. arranged or encoded in software, code and/or other data structures on a computer readable medium such as an optical medium (e.g., CD-ROM), floppy or hard disk or other medium such as firmware or microcode on one or more ROM or RAM or PROM chips or in one or more modules. The software or firmware or such configurations may be installed on a computing device to cause one or more processors in the computing device to perform the techniques described in embodiments of the present invention.

Further, each functional block or respective feature of the base station device and the terminal device used in each of the above embodiments may be implemented or executed by a circuit, which is typically one or more integrated circuits. Circuitry designed to perform the various functions described in this specification may include a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC) or a general purpose integrated circuit, a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, or discrete hardware components, or any combination thereof. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional 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. Further, when advanced technology capable of replacing the current integrated circuit is developed due to the advancement of semiconductor technology, the present invention can also use the integrated circuit obtained by the advanced technology.

Although the present invention has been shown in connection with the preferred embodiments of the present invention, those skilled in the art will appreciate that various modifications, substitutions and changes can be made thereto without departing from the spirit and scope of the present invention. Accordingly, the present invention should not be limited by the above-described embodiments, but should be defined by the appended claims and their equivalents.

Claims (10)

1. A method performed by a user equipment in a non-connected state, comprising:

acquiring availability indication information for indicating availability of a CSI-RS resource, the CSI-RS resource being configured for a user equipment in a non-connected state and the availability indication information being transmitted through a time-frequency resource of a PDCCH determined using search space set information;

determining a corresponding CSI-RS resource indicated by the availability indication information based on a quasi co-location relationship of the search space set information and the configured CSI-RS resource; and

and determining the availability of the corresponding CSI-RS resource according to the availability indication information.

2. The method of claim 1, wherein determining, based on the quasi co-location relationship of the search space set information and the configured CSI-RS resources, a corresponding CSI-RS resource for which 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-located reference signal satisfying a quasi co-located relationship with the PDCCH detection opportunity based on the search space set information;

and determining the CSI-RS resource which meets the quasi co-location relation with the quasi co-location reference signal based on the quasi co-location relation of the configured CSI-RS resource, and using the CSI-RS resource as the corresponding CSI-RS resource with the availability indicated by the availability indication information.

3. The method of claim 2, wherein determining, based on the search space set information, a quasi co-located reference signal that satisfies a quasi co-located relationship with the PDCCH detection opportunity comprises:

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

and determining the SSB which meets the quasi co-location relation with the PDCCH detection opportunity based on the SSB sequence number to serve as the quasi co-location reference signal.

4. The method of claim 3, wherein determining, based on the SSB sequence number, an SSB that satisfies a quasi-co-location relationship with the PDCCH detection opportunity as the quasi-co-located reference signal comprises:

when the PDCCH detection opportunity and the SSB serial number have a one-to-one correspondence relationship, determining the SSB corresponding to the SSB serial number corresponding to the PDCCH detection opportunity as the quasi co-location reference signal; and/or

When one PDCCH detection opportunity corresponds to multiple SSB sequence numbers, the SSBs corresponding to all the SSB sequence numbers corresponding to the PDCCH detection opportunity are all regarded as quasi co-located reference signals corresponding to the PDCCH detection opportunity.

5. The method of claim 3, wherein the determined quasi-co-located reference signal based on the SSB sequence number comprises:

when one PDCCH detection opportunity corresponds to a plurality of SSB serial numbers, determining an actually transmitted SSB corresponding to the PDCCH detection opportunity for the PDCCH detection opportunity corresponding to the SSB serial numbers based on SSB transmission parameters configured by the network;

only the SSB actually transmitted is determined as the quasi co-located reference signal corresponding to the PDCCH detection opportunity.

6. The method of claim 3, wherein the availability indication information includes corresponding indication information indicating a corresponding CSI-RS resource for which availability is indicated by the availability indication information, the determining the corresponding CSI-RS resource for which availability is indicated by the availability indication information further comprising:

when one PDCCH detection opportunity corresponds to a plurality of SSB sequence numbers, a corresponding CSI-RS resource whose availability is indicated by the availability indication information is determined based on the corresponding indication information.

7. The method of claim 5, wherein the availability indication information includes corresponding indication information indicating a corresponding CSI-RS resource for which availability is indicated by the availability indication information, the determining the corresponding CSI-RS resource for which availability is indicated by the availability indication information further comprising:

when there are a plurality of actually transmitted SSBs corresponding to the PDCCH detection opportunity, a corresponding CSI-RS resource for which availability is indicated by the availability indication information is determined based on the corresponding indication information.

8. The method of any of claims 1-7, wherein obtaining availability indication information for indicating availability of CSI-RS resources comprises:

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

obtaining the availability indication information based on the PDCCH detection opportunity.

9. The method according to any of claims 1-7, wherein the availability indication information is configured in a DCI message, and/or,

the availability 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:

a processor; and

a memory having stored therein, a set of instructions,

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

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