Method, apparatus and device for determining quasi co-location information

Abstract

The application provides a method, device and equipment for determining quasi co-location (QCL) information, which comprises the following steps: determining the number X of QCL information, wherein X is a positive integer; when the number X of QCL information is determined to be two, and when the DCI corresponding to the current data channel does not indicate the QCL information of the antenna port of the data channel, or when the interval between the current data channel and the DCI corresponding to the data channel is less than a threshold, determining two default QCL information of the antenna port of the data channel. The method is used for determining two default QCL information of the antenna port of the data channel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and in particular to a method and device for determining quasi co-location information. BACKGROUND

[0002] When the quasi co-location (QCL) information of two antenna ports is the same, that is, the two antenna ports are QCL, the channel characteristics of one antenna port can be estimated according to the channel characteristics of the other antenna port.

[0003] In actual application, when estimating the channel characteristics of one antenna port, the QCL information of the antenna port needs to be obtained first, and then the antenna port with the same QCL information and having received a signal is searched according to the QCL information of the antenna port, and the channel characteristics of the antenna port are estimated according to the channel characteristics of the searched antenna port.

[0004] Currently, how to determine at least two QCL information of the antenna port of the data channel is an urgent problem to be solved. SUMMARY

[0005] The present application provides a method and device for determining quasi co-location information, so as to determine at least two QCL information.

[0006] In a first aspect, the present application provides a method for determining quasi co-location information, which comprises: determining the number X (X is a positive integer) of QCL information first, and determining X QCL information of the antenna port of the data channel when the number X of QCL information is greater than or equal to 2.

[0007] The execution subject of the method in the first aspect can be a terminal device or a network device. For example, the network device can be a base station or a transmission point.

[0008] The QCL information can be information used to determine the large-scale characteristics of the channel. The quasi co-location (QCL) relationship between two antenna ports means that the channel large-scale characteristics of one antenna port can be inferred from the channel large-scale characteristics conveyed by the other antenna port. The large-scale characteristics can include one or more of average gain, average delay, delay spread, Doppler shift, Doppler spread, and spatial parameter (or spatial Rx parameter).

[0009] The spatial parameter can include one or more of an angle of arrival (AOA), a dominant AoA, an average AoA, an angle of departure (AOD), a channel correlation matrix, a power angular spread spectrum of the AoA, an average AoD, a power angular spread spectrum of the AoD, a transmit channel correlation, a receive channel correlation, a transmit beamforming, a receive beamforming, a spatial channel correlation, a spatial filter, or a spatial filtering parameter, or a spatial reception parameter, or weight information, and the like.

[0010] The QCL information can also be used to indicate a parameter type of the channel.

[0011] Optionally, the above process can be applied in a scenario where at least two network devices or at least two antenna panels of the same network device simultaneously transmit data to the terminal device without QCL, and X QCL information of the antenna port of the data channel can be determined.

[0012] Optionally, the number X of QCL information can be determined when a time interval between the reception of the data channel and the control channel where the DCI corresponding to the data channel is located is less than a threshold value, or the DCI corresponding to the data channel does not include indication information for indicating the QCL information of the antenna port of the data channel.

[0013] The DCI corresponding to the data channel is used to indicate scheduling information of the data channel.

[0014] Optionally, the number X of QCL information can be determined by the following possible implementation manners:

[0015] The number X of QCL information is determined according to at least one of the following parameters: QCL configuration information of the terminal device, obtained synchronization signal block (SSB) features, obtained subcarrier spacing, a transmission mode of the terminal device, obtained DCI features, obtained QCL capability, obtained maximum number of DCIs to be detected, capability of the terminal device, or obtained data transmission scenario. Which of the above parameters is used to determine the number X of QCL information can be defined by a protocol, pre-set in the terminal device or the network device, notified by the network device to the terminal device, or determined by the network device and the terminal device according to a rule, which is not limited herein.

[0016] At the network device side, the network device determines a relationship between at least one of the above parameters and the number of determined QCL information, and determines at least one of the above parameters corresponding to the number of QCL information according to the number of required QCL information. Optionally, the network device can send all or part of the determined at least one of the above parameters corresponding to the number of QCL information to the terminal device. Optionally, in data transmission, the network device can also determine the number of QCL information of the antenna port of the data channel based on all or part of the above parameters sent to the terminal device. Optionally, the network device can determine the number of QCL information based on the notification of the terminal device.

[0017] At the terminal device side, the terminal device determines the number of QCL information of the antenna port of the data channel according to at least one of the above parameters obtained and the relationship between at least one of the above parameters and the number of QCL information. Wherein, the terminal device obtains at least one of the above parameters according to the notification of the network device. Optionally, the terminal device can send the determined number of QCL information to the network device.

[0018] Optionally, all or part of the relationship between at least one of the above parameters and the number of QCL information can be pre-set in the network device and the terminal device, such as pre-set according to the protocol definition, can also be sent by the network device to the terminal, such as the explicit indication method, and can also be obtained by the network device and the terminal device according to the pre-set rule (or combined with other information) respectively, such as the implicit indication method.

[0019] In this application, optionally, the QCL configuration information includes indication information for indicating the QCL information of the antenna port of the reference signal, and the indication information includes a QCL type, which is used to indicate the parameters of QCL.

[0020] Optionally, the indication information can be indication information for indicating the QCL information of the antenna port of the reference signal, or can be indication information for indicating the QCL information of the antenna port of the data channel and / or control channel.

[0021] Wherein, the QCL type includes at least one of quasi co-location type A (QCL-TypeA), or quasi co-location type B (QCL-TypeB), or quasi co-location type C (QCL-TypeC) or quasi co-location type D (QCL-TypeD). The parameters of QCL indicated by the QCL type can include large-scale characteristic parameters of the channel.

[0022] In this application, the SSB feature includes the number of SSBs transmitted by the network device in one or more time units.

[0023] The time unit can be predefined by a protocol. The time unit can be a time slot, or a subframe, or a radio frame, or a half frame, or 5 ms, or 10 ms, or another time unit, etc.

[0024] In this application, the subcarrier spacing includes at least one of the subcarrier spacing of the remaining minimum system information RMSI, or the subcarrier spacing of the SSB, or the subcarrier spacing of the bandwidth part BWP.

[0025] Optionally, the RMSI can be system information other than the system information carried by the PBCH.

[0026] Optionally, the RMSI can be system minimum system information for initial access, or broadcast system information and / or dedicated system information.

[0027] Optionally, the system minimum system information for initial access can include master information and remaining minimum system information, such as a master information block (MIB) and remaining minimum system information, etc.

[0028] Optionally, the SSB can be synchronization information, which can include primary synchronization information and secondary synchronization information, or can also include broadcast information. The SSB is a signal or channel used for synchronization.

[0029] Optionally, the bandwidth part (BWP) can be a part of the system bandwidth. The bandwidth part can include at least one subcarrier which can be continuous or discontinuous. The bandwidth part can also be referred to as a bandwidth resource, a carrier bandwidth part, a frequency resource part, a partial frequency resource, a carrier bandwidth part, a subband, a narrowband, or other names. For different bandwidth resources, taking bandwidth resource 0 and bandwidth resource 1 as examples, the frequency domain resources of bandwidth resource 0 and 1 can partially or completely overlap, or completely not overlap. For example, in an orthogonal frequency division multiplexing (OFDM) based communication system, the frequency domain resources of bandwidth resource 0 and bandwidth resource 1 completely overlap, but the frame structures (such as subcarrier spacing and / or CP length) are different, which are not limited by the embodiments of the present application.

[0030] In this application, the transmission mode includes at least one of single cell transmission, or cooperative transmission, or dynamic point selection DPS (or dynamic cell selection DCS) transmission, or non-coherent joint transmission NCJT.

[0031] Optionally, the coordinated transmission can be that at least two network devices transmit data for a terminal device (referred to as a terminal), such as at least two network devices simultaneously transmitting data for a terminal device, which can be the same data or different data. Or it can also be that at least two network devices make an overall decision on beam and / or precoding and / or power, and then determine the beam or precoding or power of their own signal transmission according to the overall decision. Such as related technologies or transmission methods in Coordinated Multi-Point (CoMP) or Further enhancements to Coordinated Multi-Point (FeCoMP), and the present application does not limit this.

[0032] In the present application, the DCI feature includes at least one of the DCI format, the number of bits included in the DCI, the payload size of the DCI, the byte of the DCI, the load of the DCI, or the feature of a specific field of the DCI.

[0033] The DCI format can include a first format and a second format. The first format is the format of the DCI adopted in a first transmission mode, and the first transmission mode includes single cell transmission. The second format is the format of the DCI adopted in a second transmission mode, and the second transmission mode includes one of coordinated transmission, dynamic point selection DPS (or dynamic cell selection DCS) transmission, or non-coherent joint transmission NCJT.

[0034] The number of bits included in the DCI can refer to the number of bits carried by the DCI, or the size of the bits carried by the DCI, or the payload size of the DCI.

[0035] The feature of the specific field of the DCI can refer to whether there is a specific field in the DCI, or the value of the specific field.

[0036] In the present application, the QCL capability includes at least one of the number of indication information supported by the terminal device for indicating the QCL information of the antenna port of the reference signal, or the number of reference signal sets RS sets associated with the indication information supported by the terminal device for indicating the QCL information of the antenna port of the reference signal.

[0037] In the present application, the capability of the terminal device includes the number of panels supported by the terminal device, and / or the maximum number of DCIs that can be detected by the terminal device.

[0038] In this application, the maximum number of DCIs to be detected obtained refers to the maximum number of DCIs to be detected by the terminal device configured by the network device (for example, the base station) for the terminal device, or the maximum number of DCIs to be detected by the terminal device predefined, or the maximum number of DCIs to be detected by the terminal device.

[0039] In this application, the data transmission scenario includes a scenario in which the number of QCL information is determined to be 1, or a scenario in which the number of QCL information cannot be determined.

[0040] Optionally, the number X of QCL information can be determined according to one of the following ways, or a combination of at least two ways. It can be understood that the specific way or combination of ways to determine the number of QCL information can be defined by a protocol, pre-set in the network device and the terminal device, can also be notified by the network device to the terminal device, and can also be determined by the network device and the terminal device according to the rules, which is not limited here:

[0041] Method one: determining the number of QCL information according to whether the spatial QCL parameter and / or QCL type D is included in the QCL configuration information of the terminal device.

[0042] Optionally, the spatial QCL parameter can be a spatial RX parameter. Or it can also be other spatial parameters, such as the spatial parameters mentioned in this application or other spatial parameters, etc., which are not limited in this application.

[0043] Optionally, the QCL type is used to indicate the information of the QCL parameter, such as the spatial QCL parameter. Or other QCL types can be used to indicate the spatial QCL parameter, etc., which are not limited in this application.

[0044] Method two: determining the number of QCL information according to the number of SSBs transmitted by the network device in N time units, wherein N is a positive integer.

[0045] Method three: determining the number of QCL information according to the subcarrier spacing obtained.

[0046] Method four: determining the number of QCL information according to the transmission mode of the terminal device.

[0047] Method five: determining the number of QCL information according to the format of the DCI obtained.

[0048] Method six: determining the number of QCL information according to the bit number of the DCI obtained, or the size of the DCI load, or the byte of the DCI, or the load of the DCI.

[0049] The seventh mode is to determine the number of QCL information according to the characteristics of a specific field of the obtained DCI.

[0050] The eighth mode is to determine the number of QCL information according to the number of indication information supported by the terminal device for indicating the QCL information of the antenna port of the reference signal and / or the number of RS sets associated with the indication information supported by the terminal device for indicating the QCL information of the antenna port of the reference signal.

[0051] The ninth mode is to determine the number of QCL information according to the maximum number of DCI to be detected.

[0052] The tenth mode is to determine the number of QCL information according to the maximum number of DCI that the terminal device can detect.

[0053] The eleventh mode is to determine the number of QCL information according to the number of panels supported by the terminal device.

[0054] The twelfth mode is to determine the number of QCL information according to the obtained data transmission scenario.

[0055] Optionally, when the determined parameters satisfy at least one of the following conditions, the number X of QCL information is determined to be 2, and which condition or conditions that the determined parameters need to satisfy can be defined by a protocol, pre-set in the terminal device or the network device, can also be notified by the network device to the terminal device, and can also be determined by the network device and the terminal device according to a rule, which is not limited here:

[0056] The QCL configuration information of the terminal device includes a spatial QCL parameter, or includes a QCL type D;

[0057] The number of SSBs transmitted by the network device in N time units obtained is greater than or equal to a first threshold, and N is a positive integer;

[0058] The obtained subcarrier spacing is greater than or equal to a second threshold;

[0059] The transmission mode of the terminal device is a second transmission mode, and the second transmission mode includes one of cooperative transmission, dynamic point selection DPS transmission, or non-coherent joint transmission NCJT;

[0060] The format of the obtained DCI is a second format, and the second format is the format of the DCI used in the second transmission mode;

[0061] The number of bits of the obtained DCI is greater than or equal to a third threshold;

[0062] The obtained DCI includes a specific field, or the value of the specific field of the obtained DCI belongs to a specific range (including a specific value).

[0063] The number of indication information supported by the terminal device for indicating the QCL information of the antenna port of the reference signal is at least two;

[0064] The number of RSset associated with the indication information supported by the terminal device for indicating the QCL information of the antenna port of the reference signal is at least two;

[0065] The maximum number of DCI to be detected is greater than 1;

[0066] The maximum number of DCI that the terminal device can detect is greater than 1;

[0067] The number of panels supported by the terminal device is greater than 1;

[0068] The scenario of data transmission is that the number of QCL information cannot be determined, or the number of QCL information is greater than 1.

[0069] Optionally, when the determined parameters satisfy at least one of the following conditions, the number X of QCL information is determined to be 1, and which condition or conditions that the specific parameters need to satisfy can be defined by a protocol, pre-set in the terminal device or the network device, can also be notified to the terminal device by the network device, and can also be determined by the network device and the terminal device according to a rule, which is not limited here:

[0070] The QCL configuration information of the terminal device does not include the spatial QCL parameter or does not include the QCL type D;

[0071] The number of SSBs transmitted by the network device in N time units obtained by the terminal device is less than or equal to a first threshold value, and N is a positive integer; optionally, the value of N can be defined by a protocol, pre-set in the terminal device or the network device, can also be notified to the terminal device by the network device, and can also be determined by the network device and the terminal device according to a rule, which is not limited here.

[0072] The obtained subcarrier spacing is less than or equal to a second threshold value;

[0073] The transmission mode of the terminal device is a first transmission mode, and the first transmission mode includes single-cell transmission;

[0074] The format of the obtained DCI is a first format, and the first format is the format of the DCI adopted in the first transmission mode;

[0075] The number of bits of the obtained DCI is less than or equal to a third threshold value;

[0076] The obtained DCI does not include a specific field, or the value of the specific field of the obtained DCI belongs to a specific range (including a specific value).

[0077] The number of indication information supported by the terminal device for indicating the QCL information of the antenna port of the reference signal is 1, and the indication information supported by the terminal device for indicating the QCL information of the antenna port of the reference signal is associated with

[0078] The number of RS sets is 1.

[0079] The maximum number of DCIs to be detected is 1.

[0080] The maximum number of DCIs that the terminal device can detect is 1.

[0081] The number of panels supported by the terminal device is 1.

[0082] The number of QCL information determined in the data transmission scenario is 1.

[0083] Optionally, the X QCL information of the antenna port of the data channel can be determined according to the following possible implementation manners, and specific determination of the X QCL information of the antenna port of the data channel by which manner or combination of manners can be defined by a protocol, pre-set in the terminal device or the network device, notified to the terminal device by the network device, or determined by the network device and the terminal device according to rules, which is not limited here:

[0084] The X QCL information of the antenna port of the data channel is determined according to at least one of the first indication information set, the second indication information set, or the third indication information set.

[0085] The first indication information set includes first indication information for indicating QCL information of antenna ports of the downlink control channel in the CORESET, the second indication information set includes second indication information (all or part of the indication information in the foregoing QCL configuration information) for indicating QCL information of antenna ports of the reference signal, which is configured by high-layer signaling, and the third indication information set includes third indication information for indicating QCL information of antenna ports of the data channel scheduled by the DCI in the DCI at the latest time. It can be understood that, optionally, for the network device to determine X QCL information of the antenna ports of the data channel according to at least one of the first indication information set, the second indication information set, or the third indication information set, the third indication information set includes third indication information for indicating QCL information of antenna ports of the data channel scheduled by the DCI in the DCI transmitted at the latest time. Optionally, for the terminal device to determine X QCL information of the antenna ports of the data channel according to at least one of the first indication information set, the second indication information set, or the third indication information set, the third indication information set includes third indication information for indicating QCL information of antenna ports of the data channel scheduled by the DCI in the DCI received at the latest time. That is, optionally, for the network device, the DCI at the latest time is the DCI transmitted at the latest time, and optionally, for the terminal device, the DCI at the latest time is the DCI received at the latest time.

[0086] The antenna ports of the downlink control channel can be antenna ports of a DMRS of the downlink control channel and / or antenna ports of a PTRS of the downlink control channel. The antenna ports of the data channel scheduled by the DCI can be antenna ports of a DMRS of the data channel and / or antenna ports of a PTRS of the data channel.

[0087] The DCI at the latest time can be DCI at one or more latest times, for example, DCI in one or more time units at the latest time. The time unit can be a slot, or a subframe, or a radio frame, or a half frame, or 5 ms, or 10 ms, or other time units, etc. Optionally, the one or more latest times can belong to a time window, and a size of the time window can be defined by a protocol, pre-set in the terminal device or the network device, notified by the network device to the terminal device, or determined by the network device and the terminal device according to a rule, which is not limited herein.

[0088] Optionally, the X QCL information can be determined according to one of the following manners or a combination of at least two of the manners, and which manner or combination of manners is used can be defined by a protocol, pre-set in the terminal device or the network device, notified by the network device to the terminal device, or determined by the network device and the terminal device according to a rule, which is not limited herein:

[0089] Manner one: determining A of X QCL information of an antenna port of a data channel according to a first indication information set, where A is a positive integer, and A is less than or equal to X.

[0090] Wherein, the first indication information in the first indication information set satisfies a first rule, and the first rule is:

[0091] Identifying the first indication information in the smallest A CORESETs, wherein each of the A CORESETs includes one first indication information, and the first indication information is associated with one RS set; or,

[0092] Identifying the first indication information in the smallest A CORESETs, wherein each of the A CORESETs includes one first indication information, and different CORESETs in the A CORESETs include different first indication information, and the first indication information is associated with one RS set; or,

[0093] Identifying A first indication information in the smallest P CORESETs, wherein at least one CORESET in the P CORESETs includes at least two first indication information, P is a positive integer and less than A, and the first indication information is associated with one RS set; or,

[0094] Identifying Y first indication information in the smallest Q CORESETs, and at least one of the first indication information included in the Q CORESETs is associated with at least two RS sets, wherein Q is a positive integer and less than A, and Y is a positive integer and less than A.

[0095] The first rule that can be satisfied in specific implementation can be defined by a protocol, pre-set in a terminal device or a network device, can also be notified to the terminal device by the network device, and can also be determined by the network device and the terminal device according to the rule, which is not limited here.

[0096] In this application, each rule is exemplified by identifying the minimum, and it can be understood that the maximum can also be used, which is not limited here. Replacing "identifying the minimum" with "identifying the maximum" can obtain the corresponding scheme of "identifying the maximum".

[0097] The A smallest CORESETs or the P smallest CORESETs or the Q smallest CORESETs can be determined from CORESETs received by the terminal device in one or more time units, or CORESETs sent by the network device in one or more time units. The time unit can be a time slot, a subframe, a radio frame, a half frame, 5 ms, 10 ms or other time units, etc. Optionally, the one or more time units belong to a time window, the size of the time window can be defined by a protocol, pre-set in the terminal device or the network device, can also be notified by the network device to the terminal device, and can also be determined by the network device and the terminal device according to a rule, which is not limited here.

[0098] The A smallest CORESETs can also be determined from all CORESETs received by the terminal device, or all CORESETs sent by the network device.

[0099] Optionally, A satisfies the following formula one:

[0100]

[0101] Wherein, M is the total number of the smallest CORESET, m is the mth CORESET in the smallest CORESET, k is the kth indication information in the mth CORESET in the smallest CORESET, Y m,k is the number of RS sets associated with the kth indication information in the mth CORESET in the smallest CORESET, n m is the number of indication information in the mth CORESET in the smallest CORESET. The first indication information set includes the indication information in the above formula, and the number is

[0102] Optionally, at least two of the indication information involved in the above formula are the same.

[0103] Optionally, all the indication information involved in the above formula are different.

[0104] Optionally, at least two of the RS sets involved in the above formula are the same.

[0105] Optionally, all the RS sets involved in the above formula are different. The difference of the RS sets can include that at least one RS identification ID in the RS set is different, and / or at least one QCL type is different.

[0106] Optionally, the M smallest CORESETs are M smallest CORESETs among the M CORESETs configured for the terminal device in the latest one or more time units, such as slots.

[0107] Optionally, the M smallest CORESETs are M smallest CORESETs among the M CORESETs configured for the terminal device.

[0108] Optionally, the M smallest CORESETs are M smallest CORESETs among the M CORESETs configured for the terminal device.

[0109] Optionally, the M smallest CORESETs are M smallest CORESETs among the M CORESETs configured for the terminal device.

[0110] Optionally, the M smallest CORESETs are M smallest CORESETs among the M CORESETs configured for the terminal device.

[0111] Optionally, the M smallest CORESETs are M smallest CORESETs among the M CORESETs configured for the terminal device.

[0112] Optionally, the M smallest CORESETs are M smallest CORESETs among the M CORESETs configured for the terminal device.

[0113] Optionally, B satisfies the following Formula Two:

[0114]

[0115] D is the total number of the smallest second indication information, d is the dth second indication information among the smallest second indication information, Z d is the number of RS sets associated with the dth second indication information among the smallest second indication information. The second indication information set includes the indication information in the above formula, and the number thereof is D.

[0116] Optionally, at least two of the indication information in the above formula are the same.

[0117] Optionally, all the indication information in the above formula are different.

[0118] Optionally, at least two of the RS sets in the above formula are the same.

[0119] Optionally, the RS sets in the above formula are all different. The RS sets being different can include at least one RS identification ID in the RS sets being different, and / or at least one QCL type being different.

[0120] Optionally, the second indication information is a Transmission Configuration Indication (TCI) state.

[0121] Method three: determining C of X QCL information of the antenna port of the data channel according to a third indication information set, where C is a positive integer, and C is less than or equal to X.

[0122] The third indication information in the third indication information set satisfies a third rule, and the third rule is:

[0123] the third indication information in the C DCIs received (or sent) at the latest time, where each of the C DCIs includes one third indication information, and the third indication information is associated with one RS set; or,

[0124] the third indication information in the C DCIs received (or sent) at the latest time, where each of the C DCIs includes one third indication information, and the third indication information included by different DCIs in the C DCIs is different, and the third indication information is associated with one RS set; or,

[0125] C third indication information in the K DCIs received (or sent) at the latest time, where at least one DCI in the K DCIs includes at least two third indication information, K is a positive integer and less than C, the third indication information is associated with one RS set; or,

[0126] Z third indication information in the T DCIs received (or sent) at the latest time, where at least one of the third indication information in the T DCIs is associated with at least two RS sets, T is a positive integer and less than C, Z is a positive integer and less than C. At least one DCI in the T DCIs can include at least one third indication information.

[0127] The third rule that is satisfied in the specific implementation can be defined by a protocol, pre-set in the terminal device or the network device, can also be notified by the network device to the terminal device, and can also be determined by the network device and the terminal device according to the rule, which is not limited here.

[0128] Optionally, C satisfies the following formula three:

[0129]

[0130] H is the total number of the DCI received (or sent) at the latest time, h is the hth DCI in the DCI received (or sent) at the latest time, t is the tth indication information in the hth DCI in the DCI received (or sent) at the latest time, Y h,t is the number of RS sets associated with the tth indication information in the hth DCI in the DCI received (or sent) at the latest time, n h is the number of indication information in the hth DCI in the DCI received (or sent) at the latest time. The third indication information set includes the indication information in the above formula, and the number thereof is

[0131] Optionally, at least two of the indication information in the above formula are the same.

[0132] Optionally, all the indication information in the above formula are different.

[0133] Optionally, at least two of the RS sets in the above formula are the same.

[0134] Optionally, all the RS sets in the above formula are different. The difference of the RS sets can include that at least one RS identification ID in the RS set is different, and / or at least one QCL type is different.

[0135] Optionally, the DCI received (or sent) at the latest time in the above formula can be one or more DCIs received (or sent) at the latest time, which can be one or more DCIs received (or sent) in one or more time units. The time unit can be a time slot, or a subframe, or a radio frame, or a half frame, or 5 ms, or 10 ms or other time units. Optionally, the one or more times at the latest time can belong to one time window, and the size of the time window can be defined by a protocol, pre-set in the terminal device or the network device, can also be notified to the terminal device by the network device, and can also be determined by the network device and the terminal device according to rules, which is not limited here.

[0136] In a second aspect, the present application provides a communication device, which includes some modules for the method in the first aspect or any possible implementation manner of the first aspect. The specific modules can correspond to the method steps, which are not described here.

[0137] In a third aspect, the present application provides a communication device, which includes: a processor, the processor is coupled with a memory;

[0138] The memory is used for storing a computer program.

[0139] The processor is configured to execute a computer program stored in the memory, so that the apparatus executes the method in the first aspect or any possible implementation manner of the first aspect.

[0140] In a fourth aspect, a readable storage medium is provided, which includes a program or instructions, and when the program or instructions are executed on a computer, the method in the first aspect or any possible implementation manner of the first aspect is executed.

[0141] In a fifth aspect, a computer program product is provided, which includes computer program codes, and when the computer program codes are executed on a computer, the computer executes the method in the first aspect or any possible implementation manner of the first aspect.

[0142] In a sixth aspect, a communication system is provided, which includes a network device executing any method in the first aspect and a terminal device executing any method in the first aspect.

[0143] The method, apparatus and system for determining QCL information provided by the embodiments of the present application, when the QCL information needs to be determined, the number X of QCL information is determined first, and when the number X of QCL information is greater than or equal to 2, the X QCL information of the antenna port of the data channel is determined. In this way, in the scenario that at least two network devices or at least two antenna panels of the same network device simultaneously send data to the terminal device, the X QCL information of the antenna port of the data channel can also be determined. BRIEF DESCRIPTION OF DRAWINGS

[0144] Figure 1 The communication system provided by the present application is shown in the figure Figure 1 ;

[0145] Figure 2 The communication system provided by the present application is shown in the figure Figure 2 ;

[0146] Figure 3 The flowchart of the method for determining QCL information provided by the present application is shown in the figure

[0147] Figure 4 The structure diagram of the terminal device provided by the present application is shown in the figure

[0148] Figure 5 The structure diagram of the network device provided by the present application is shown in the figure

[0149] Figure 6 The structure diagram of the device for determining QCL information provided by the present application is shown in the figure DETAILED DESCRIPTION

[0150] The technical solutions in the present application will be described below with reference to the drawings.

[0151] The technical solutions in the embodiments of the present application can be applied to various communication systems, for example, a long term evolution (LTE) system, a worldwide interoperability for microwave access (WiMAX) communication system, a future 5th generation (5G) system, such as a new radio access technology (NR), and a future communication system, such as a 6G system.

[0152] The present application will present various aspects, embodiments or features around a system which can include a plurality of devices, components, modules, etc. It should be understood and appreciated that each system can include additional devices, components, modules, etc., and / or can not include all of the devices, components, modules, etc. discussed in connection with the figures. Furthermore, combinations of these aspects can also be used.

[0153] In addition, in the embodiments of the present application, the word "example" is used to mean by way of example, illustration or demonstration. Any embodiment or design scheme described as "example" in the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the word "example" is intended to present the concept in a specific manner.

[0154] In the embodiments of the present application, "of", "corresponding" and "corresponding" can be used interchangeably at times. It should be pointed out that when the distinction is not emphasized, the meanings expressed are consistent.

[0155] In the embodiments of the present application, sometimes the subscript such as W1 may be mistakenly used in the form of non-subscript such as W1. When the distinction is not emphasized, the meanings expressed are consistent.

[0156] The network architecture and service scenarios described in the embodiments of the present application are used to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those skilled in the art can know that, as the network architecture evolves and new service scenarios appear, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0157] The embodiments of the present application can be applied to a time division duplex (TDD) scenario and a frequency division duplex (FDD) scenario.

[0158] The embodiments of the present application can be applied to a traditional typical network and a future user equipment (UE)-centric network. The UE-centric network introduces a non-cell network architecture, that is, a large number of small stations are deployed in a certain area to form a hyper cell (Hypercell), each small station is a transmission point (Transmission Point, TP) or TRP of the Hypercell, and is connected to a centralized controller (controller). When the UE moves in the Hypercell, the network side device selects a new sub-cluster (sub-cluster) for the UE to serve, thereby avoiding real cell switching and realizing the continuity of UE service. The network side device includes a wireless network device. Alternatively, in the UE-centric network, multiple network side devices, such as small stations, can have independent controllers, such as distributed controllers, and each small station can independently schedule users. The small stations interact with each other in the long term, so that when providing collaborative services for the UE, there is a certain flexibility.

[0159] In some scenarios in the embodiments of the present application, the scenario of the NR network in the wireless communication network is taken as an example for description. It should be noted that the scheme in the embodiments of the present application can also be applied to other wireless communication networks, and the corresponding name can also be replaced by the name of the corresponding function in other wireless communication networks.

[0160] The base station shown in the embodiments of the present application can be a device providing wireless access to a terminal device, including but not limited to an evolved Node B (eNB), a wireless fidelity access point (WiFi AP), a worldwide interoperability for microwave access base station (WiMAX BS), a base station in a 5G network, or a base station in other future networks, a transmission and reception point (TRP), a transmission point (TP), etc.

[0161] The different base stations in the embodiments of the present application can be base stations with different identities, or can be base stations with the same identity deployed in different geographic locations. Since the base station does not know whether it will be involved in the scenario to which the embodiments of the present application are applied before the base station is deployed, the base station, or the baseband chip, should support the method provided by the embodiments of the present application before deployment. It can be understood that the aforementioned base stations with different identities can be base station identities, or can be cell identities or other identities.

[0162] The terminal device shown in the embodiments of the present application can also be referred to as a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user device. The terminal device in the embodiments of the present application can be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical treatment, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. The embodiments of the present application do not limit the application scenarios. The terminal device with wireless transceiver function and the chip that can be arranged in the terminal device are collectively referred to as the terminal device in the present application. In order to facilitate understanding of the embodiments of the present application, first, the communication system shown in Figures 1-2 The communication system suitable for the embodiments of the present application is described in detail taking the communication system shown in

[0163] Figure 1 The communication system provided by the present application is shown in Figure 1 . Please refer to Figure 1 , which includes a plurality of network devices 101 and terminal devices 102. The plurality of network devices 101 can simultaneously send data to the terminal device 102. The network device 101 can be configured with multiple antennas, and the terminal device 102 can also be configured with multiple antennas.

[0164] Figure 2 The communication system provided by the present application is shown in Figure 2 . Please refer to Figure 2 , which includes a plurality of network devices 201 and terminal devices 202. The network device 201 includes a plurality of antenna panels, for example, please refer to Figure 2 The network device 201 includes four antenna panels, denoted as antenna panel A, antenna panel B, antenna panel C, and antenna panel D. The antenna ports through which the different antenna panels of the network device 201 transmit signals can be QCL or non-QCL. In this application, the network device 201 transmits data to the terminal device 202 through at least two non-QCL antenna panels at the same time.

[0165] It should be understood that the network device 101 can also include a plurality of components (for example, a processor, a modulator, a multiplexer, a demodulator, or a demultiplexer, etc.) related to signal transmission and reception.

[0166] The network device is a device with wireless transceiving function or a chip that can be arranged in the device, and the device includes but is not limited to: an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (for example, a home evolved Node B or a home Node B (HNB)), a baseband unit (BBU), an access point (AP) in a wireless fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a network device (TRP or TP), etc., and can also be a gNB or a network device (TRP or TP) in a 5G (for example, a NR) system, one or a group of antenna panels (including a plurality of antenna panels) of a base station in a 5G system, or can also be a network node constituting a gNB or a network device, such as a baseband unit (BBU) or a distributed unit (DU).

[0167] In some deployments, a gNB can include a centralized unit (CU) and a DU. A gNB can also include a radio unit (RU). The CU implements part of the functionality of the gNB, and the DU implements part of the functionality of the gNB, for example, the CU implements radio resource control (RRC), packet data convergence protocol (PDCP) layer functionality, and the DU implements radio link control (RLC), media access control (MAC), and physical (PHY) layer functionality. Since information at the RRC layer eventually becomes information at the PHY layer, or vice versa, high layer signaling, such as RRC layer signaling or PDCP layer signaling, can also be considered as being transmitted by the DU, or by the DU + RU, under this architecture. It can be understood that a network device can be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU can be divided into a network device in an access network RAN, or the CU can be divided into a network device in a core network CN, which is not limited herein.

[0168] It should be noted that, Figures 1-2 The application scenarios to which the method shown in the present application are applicable are only shown in the form of examples, and are not limited to the application scenarios. In actual application processes, the application scenarios to which the method shown in the present application are applicable can be determined according to actual needs, and the present application does not make a specific limitation thereto.

[0169] When a single network device (for example, a base station, a transmission point, etc.) transmits data to a terminal device, the QCL information of an antenna port is usually determined according to the following manner: when the time interval between the data channel and the control channel transmission is greater than a threshold value, it is judged whether the TCI field is included in the downlink control information (DCI), if yes, the QCL information is determined according to the value in the TCI field, if no, the TCI state of the antenna port is determined according to the TCI state of the control channel resource set (CORESET) in which the physical downlink control channel (PDCCH) is transmitted, and the QCL information of the antenna port is determined according to the TCI state of the antenna port. When the time interval between the data channel and the control channel transmission is less than the threshold value, the QCL information of the antenna port is determined according to the TCI state in the CORESET with the smallest number in the latest time unit.

[0170] The present application discusses the case of determining at least two QCL information, and the possible scenarios involved can be that at least two network devices or at least two antenna panels in the same network device that are not QCL simultaneously transmit data to the terminal device.

[0171] In the present application, the number of QCL information can be determined first. When the number of QCL information is determined to be greater than or equal to 2, at least two QCL information of the antenna port of the data channel can be determined according to the TCI state in the TCI state set according to the preset rule. In this way, when at least two network devices or at least two antenna panels in the same network device that are not QCL simultaneously transmit data to the terminal device, the QCL information of at least two antenna ports can be determined.

[0172] Optionally, the TCI state set can include one or more TCI states. The TCI state is used to indicate the QCL information of the antenna port of the reference signal and / or the QCL information of the antenna port of the data channel and / or the QCL information of the antenna port of the control channel or the QCL information of the antenna port of other signals, etc. Specifically, the present application does not limit it.

[0173] Next, the technical solutions shown in the present application will be described in detail through specific embodiments. It should be noted that the following several specific embodiments can be independent of each other or can be combined with each other. For the same or similar content, it will not be repeated in different embodiments.

[0174] Figure 3 The flowchart of the method for determining quasi co-location information provided by the present application is shown. Please see Figure 3 The method can include:

[0175] S301, determine the number X of QCL information.

[0176] Wherein, X is a positive integer.

[0177] Optionally, the QCL information can be information used to determine the large-scale characteristic parameters of the channel.

[0178] For example, two antenna ports have a quasi co-located (QCL) relationship, which means that a channel large-scale characteristic parameter of one antenna port can be inferred by a channel large-scale characteristic parameter conveyed by another antenna port. The large-scale characteristic parameter can include one or more of average gain, average delay, delay spread, Doppler shift, Doppler spread, spatial parameter, or spatial Rx parameters.

[0179] wherein the spatial parameter can include one or more of angle of arrival (AoA), dominant AoA, average AoA, angle of departure (AoD), channel correlation matrix, power angle spread spectrum of AoA, average AoD, power angle spread spectrum of AoD, transmit channel correlation, receive channel correlation, transmit beamforming, receive beamforming, spatial channel correlation, spatial filter, or spatial filter parameter, or spatial Rx parameter, or weight information, etc.

[0180] Optionally, the QCL information can also be used to indicate a parameter type of the channel. The parameter type of the channel can also be referred to as a QCL type. The parameter type is used to indicate the large-scale characteristic parameter of the channel.

[0181] Optionally, the QCL type includes at least one of quasi co-located type A (QCL-TypeA), or quasi co-located type B (QCL-TypeB), or quasi co-located type C (QCL-TypeC), or quasi co-located type D (QCL-TypeD). When the QCL types are different, the large-scale characteristic parameter determined by the QCL information corresponding to the QCL type is different. For example, the large-scale characteristic parameter determined by the QCL information corresponding to different QCL types can be as shown in Table 1:

[0182] Table 1

[0183]

[0184] It should be noted that Table 1 only illustrates, in the form of an example, the large-scale characteristic parameters of the channel determined by the QCL information corresponding to each QCL type, and does not limit the large-scale characteristic parameters of the channel determined by the QCL information corresponding to each QCL type. In actual application, the large-scale characteristic parameters of the channel determined by the QCL information corresponding to each QCL type can be set according to actual needs, and the present application does not make a specific limitation in this regard.

[0185] Optionally, the number of QCL information is determined when a receiving time interval of the data channel and a control channel where the downlink control information corresponding to the data channel is located is less than a threshold value, or the indication information for indicating the QCL information of the antenna port of the data channel is not included in the DCI corresponding to the data channel.

[0186] When the receiving time interval of the data channel and the control channel where the downlink control information corresponding to the data channel is located is less than the threshold value, the terminal device cannot determine the QCL information according to the indication information in the DCI corresponding to the data channel because the DCI corresponding to the data channel has not been received through the control channel where the DCI is located before the data is received through the data channel, or the DCI corresponding to the data channel has been received but the required information has not been interpreted. When it is determined that the indication information for indicating the QCL information of the antenna port of the data channel is not included in the DCI corresponding to the data channel, the terminal device cannot determine the QCL information according to the indication information in the DCI corresponding to the data channel.

[0187] Optionally, the DCI corresponding to the data channel is used to indicate scheduling information of the data channel.

[0188] Optionally, the indication information for indicating the QCL information of the antenna port of the data channel can be a TCI state.

[0189] Optionally, the TCI state can be indicated by QCL configuration information.

[0190] Optionally, the TCI state can be indicated by high-layer signaling and / or physical-layer signaling. For example, one or more TCI states can be configured by high-layer signaling, and each TCI state includes a TCI state identifier and TCI information. Further, one of the plurality of TCI states can be indicated by physical-layer signaling, for example, the TCI state can be determined by indicating the TCI state identifier. The high-layer signaling can be RRC signaling or MAC signaling or other high-layer signaling, and the physical-layer signaling can be downlink control information (DCI) or other physical-layer signaling. The specific embodiments of the present application are not limited in this regard.

[0191] Optionally, the TCI state ID can be determined according to a predefined rule, for example, according to the order of configuration of the TCI state, for example, the TCI state ID of the first configured TCI state is TCI 0, the TCI state ID of the second configured TCI state is TCI 1, and so on.

[0192] Optionally, the TCI information can be the configuration of a reference signal set.

[0193] Optionally, one TCI state includes the configuration of at least one reference signal set (Reference Signal, RS set), such as TCI-RS-SetConfig, and each TCI-RS-SetConfig includes the configuration parameters of one RS set, for example, the configuration parameters can include the identification of the RS, the QCL parameter (such as QCL type) and the like. For example, the configuration parameters included in the RS set can be as follows:

[0194] {{DL RS ID 1, QCL-Type 1}, {DL RS ID 2, QCL-Type 2}};

[0195] Or,

[0196] {DL RS ID 1, QC-Type 1}.

[0197] For example, the configuration parameters of the RS set in the TCI-RS-SetConfig can be as follows:

[0198] {{DL RS ID 1, QCL-Type 1}, {DL RS ID 2, QCL-Type 2}};

[0199] Or,

[0200] {DL RS ID 1, QC-Type 1}.

[0201] For example, the configuration parameters of the TCI state can be as follows:

[0202] TCI state={

[0203] TCI state ID;

[0204] TCI-RS-SetConfig0;

[0205] TCI-RS-SetConfig1;

[0206] }

[0207] Optionally, a TCI state includes a configuration of a reference signal set (Reference Signal, RS set), such as TCI-RS-SetConfig, each TCI-RS-SetConfig includes configuration parameters of at least one RS set, for example, the configuration parameters can include the identification of the RS, QCL parameters (such as QCL type), etc.

[0208] For example, the configuration parameters included in the RS set can be as follows:

[0209] {{DL RS ID 1, QCL-Type 1}, {DL RS ID 2, QCL-Type 2}};

[0210] Or,

[0211] {DL RS ID 1, QC-Type 1}.

[0212] For example, TCI-RS-SetConfig can include 2 RS sets, and the configuration parameters of TCI-RS-SetConfig can be as follows:

[0213] {{DL RS ID 1, QCL-Type 1}, {DL RS ID 2, QCL-Type 2}};

[0214] {{DL RS ID 3, QCL-Type 1}, {DL RS ID 4, QCL-Type 2}};

[0215] That is, the first RS set includes DL RS ID 1 and DL RS ID 2, and the second RS set includes DL RS ID 3 and DL RS ID 4.

[0216] Or,

[0217] {DL RS ID 1, QC-Type 1}, {DL RS ID 3, QC-Type 1}.

[0218] That is, the first RS set includes DL RS ID 1, and the second RS set includes DL RS ID 3.

[0219] For example, the configuration parameters of the TCI state can be as follows:

[0220] TCI state={

[0221] TCI state ID;

[0222] TCI-RS-SetConfig;

[0223] }

[0224] Optionally, one TCI state includes at least one TCI-RS-SetConfig of reference signal set (RS set), each TCI-RS-SetConfig includes configuration parameters of at least one RS set, for example, the configuration parameters can include the identification of RS, QCL parameters (such as QCL type) and the like.

[0225] For example, the configuration parameters included in the RS set can be as follows:

[0226] {{DL RS ID 1, QCL-Type 1}, {DL RS ID 2, QCL-Type 2}};

[0227] Or,

[0228] {DL RS ID 1, QC-Type 1}.

[0229] For example, the TCI-RS-SetConfig can include 2 RS sets, and the configuration parameters of the TCI-RS-SetConfig can be as follows:

[0230] {{DL RS ID 1, QCL-Type 1}, {DL RS ID 2, QCL-Type 2}};

[0231] {{DL RS ID 3, QCL-Type 1}, {DL RS ID 4, QCL-Type 2}};

[0232] Or,

[0233] {DL RS ID 1, QC-Type 1}, {DL RS ID 3, QC-Type 1}. For example, the configuration parameters of the TCI state can be as follows:

[0234] TCI state={

[0235] TCI state ID;

[0236] TCI-RS-SetConfig0;

[0237] TCI-RS-SetConfig1;

[0238] }

[0239] Optionally, the configuration parameter of one RS set can include one or two DL RSs and the corresponding quasi co-location type (QCL-Type) of each DL RS, which is configured by the high layer parameter QCL-Type. When the configuration parameter of one RS set includes two DL RSs, the quasi co-location type corresponding to each DL RS is different, regardless of whether the RSs are the same or different.

[0240] Optionally, the TCI state can not include the QCL type, in which case the QCL type can be determined by a predefined manner. For example, if the configuration parameter of the RS set in the TCI state only includes the identification of the RS, such as:

[0241] TCI-RS-SetConfig: DL RS ID 1

[0242] At this time, the large-scale characteristic parameter of the channel corresponding to the RS set of the TCI state can be predefined, such as one or more of the large-scale channel parameters: Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameter. Optionally, the execution subject of S301 can be a terminal device or a network device.

[0243] Optionally, the parameters for determining the number X of QCL information can include at least one of the following parameters:

[0244] The QCL configuration information of the terminal device, or the obtained SSB feature, or the obtained subcarrier spacing, or the transmission mode of the terminal device, or the obtained DCI feature, or the obtained QCL capability, or the obtained maximum number of DCIs to be detected, or the capability of the terminal device, or the obtained data transmission scenario.

[0245] On the network device side, the network device determines the relationship between at least one of the above parameters and the number of determined QCL information, and determines the above parameter corresponding to the number of QCL information according to the number of required QCL information. Optionally, the network device can send all or part of the above parameters corresponding to the number of determined QCL information to the terminal device. Optionally, in data transmission, the network device can also determine the number of QCL information of the antenna port of the data channel based on all or part of the above parameters sent to the terminal device. Optionally, the network device can determine the number of QCL information based on the notification of the terminal device.

[0246] At the terminal device side, the terminal device determines the number of QCL information of the antenna port of the data channel according to at least one of the above parameters and the relationship between at least one of the above parameters and the number of QCL information. Wherein, the terminal device learns at least one of the above parameters, which can be based on the notification of the network device. Optionally, the terminal device can send the determined number of QCL information to the network device.

[0247] Optionally, all or part of the relationship between at least one of the above parameters and the number of QCL information can be pre-set in the network device and the terminal device, such as pre-set according to the protocol definition, can also be sent by the network device to the terminal, such as explicit indication, and can also be learned by the network device and the terminal device respectively according to the pre-set rule (or combined with other information), such as implicit indication.

[0248] Optionally, the QCL configuration information of the terminal device includes indication information for indicating the QCL information of the antenna port of the reference signal, and the indication information includes a QCL type, and the QCL type is used to indicate the parameters of QCL.

[0249] Optionally, the QCL type includes at least one of quasi co-location type A (QCL-TypeA), or quasi co-location type B (QCL-TypeB), or quasi co-location type C (QCL-TypeC) or quasi co-location type D (QCL-TypeD).

[0250] Optionally, the parameters of QCL indicated by the QCL type can include the large-scale characteristic parameters of the channel. Wherein, the large-scale characteristic parameters of the channel indicated by different QCL types can refer to Table 1, which will not be repeated here.

[0251] It should be noted that when the QCL configuration information of the terminal device is determined by the network device, the network device can send the QCL configuration information of the terminal device to the terminal device.

[0252] Optionally, the QCL configuration information can be TCI state, or other configuration information for indicating QCL information, etc., and the specific application does not limit it.

[0253] Optionally, the network device can send the QCL configuration information to the terminal device through Radio Resource Control (RRC) signaling, or send the QCL configuration information to the terminal device through Medium Access Control (MAC) signaling. Of course, the network device can also send the QCL configuration information to the terminal device through other high-layer signaling or physical layer signaling, which is not limited in the present application. Optionally, the signaling used to send the QCL configuration information can be predefined, or can be informed to the terminal device by the network device through signaling, which is not limited in the present application.

[0254] In the channel estimation, the antenna port having the QCL relationship with the antenna port of the data channel and / or the related QCL parameter can be determined according to the QCL configuration information. The antenna port having the QCL relationship with the antenna port of the data channel can be one or more of the antenna port of the CSI-RS, the antenna port of the SSB, or the identifier (or index) of the SSB. The related QCL parameter can be at least one of the parameters in the above large-scale characteristics or at least one of the QCL types. For example, the QCL configuration information can include the spatial QCL parameter, or can not include the spatial QCL parameter; or the QCL configuration information includes QCL-TypeD, or can not include QCL-TypeD. Whether the QCL configuration information includes the spatial QCL parameter or QCL-TypeD can be determined according to the specific needs, which is not limited herein.

[0255] Optionally, the obtained SSB feature refers to the number of SSBs transmitted by the network device in one or more time units. Optionally, the time unit can be predefined by the protocol. For example, the time unit can be a slot, or a subframe, or a radio frame, or a half frame, or 5ms, or 10ms, or other time units (types (or lengths)), etc. Of course, in actual application process, the number or type (or length) of the time unit can be set according to actual needs, and the number of SSBs transmitted in the time unit can also be set according to actual needs, which is not limited in the present application.

[0256] For example, the obtained SSB feature can refer to the number of SSBs transmitted by the network device in N time units. For example, the obtained SSB feature refers to the number of SSBs transmitted by the network device in 2 radio frames, or the number of SSBs transmitted in 5 subframes, etc. N can be a positive integer, and the specific value can be signaled by the network device to the terminal (explicit indication or implicit indication), or can be predefined, which is not limited in the present application. In the present application, the explicit indication refers to the field or domain directly indicated in the signaling; the implicit indication refers to that the field or domain is not directly indicated in the signaling, and the network device and / or terminal device indirectly obtains the corresponding indication based on the corresponding relationship or rule and other information. In the present application, when it is mentioned that the signaling is signaled, it is not emphasized whether the explicit indication or the implicit indication is used, that is, the explicit indication or the implicit indication is included. Optionally, the specific implementation of the explicit indication or the implicit indication can be determined according to the protocol, and can be configured in the network device and / or terminal device, or can be determined by other means, which is not limited herein.

[0257] Optionally, the obtained subcarrier spacing refers to the subcarrier spacing of the channel carrying the data received by the terminal device. For example, the subcarrier spacing includes at least one of the subcarrier spacing of the remaining minimum system information (RMSI), the subcarrier spacing of the SSB, or the subcarrier spacing of the bandwidth part (BWP). Of course, the subcarrier spacing can also include other types of subcarrier spacing, which is not limited in the present application.

[0258] Optionally, when the subcarrier spacing is determined by the network device, the network device can send the subcarrier spacing to the terminal device.

[0259] Optionally, the transmission mode of the terminal device can include at least one of single-cell transmission, cooperative transmission, dynamic point selection (DPS) transmission, or non-coherent joint transmission (NCJT). Of course, in actual application, the transmission method of the terminal device can also include other transmission methods, which is not limited in the present application.

[0260] Optionally, the obtained DCI feature refers to the attribute information of the DCI. For example, the DCI feature or the attribute information of the DCI can include at least one of the DCI format, the number of bits included in the DCI, the payload size of the DCI, the byte of the DCI, the load of the DCI, or the feature of a specific field of the DCI. Of course, the DCI feature or the attribute information of the DCI can also include other information, which is not limited in the present application.

[0261] Optionally, the feature of the specific field of the DCI can refer to whether the specific field exists in the DCI, or a value of the specific field.

[0262] Optionally, the obtained feature of the DCI can also refer to a feature of the DCI to be received by the terminal device, or a feature of the DCI corresponding to the terminal device.

[0263] For example, the feature of the DCI corresponding to the terminal device can be a feature of the DCI corresponding to a transmission mode of the terminal device, or a feature of the DCI corresponding to data to be received by the terminal device, such as a feature of the DCI in a fallback mode, such as format0_0 or format1_0.

[0264] The DCI format in the fallback mode is a DCI format including a relatively small number of DCI bits or a DCI format corresponding to data transmission in a relatively conservative transmission mode such as open loop, transmit diversity, etc., for reducing the overhead of the DCI and improving transmission performance.

[0265] Optionally, the DCI format can include a first format and a second format. The first format is a format of the DCI used in a first transmission mode, and the first transmission mode includes single cell transmission. The second format is a format of the DCI used in a second transmission mode, and the second transmission mode includes one of cooperative transmission, dynamic point selection (DPS) transmission, or non-coherent joint transmission (NCJT).

[0266] The cooperative transmission can be transmission of data for the terminal device by at least two network devices, such as simultaneous transmission of data for the terminal device by at least two network devices, which can be the same data or different data. Alternatively, the at least two network devices can make an overall decision on beam and / or precoding and / or power, and then determine the beam or precoding or power of their own signal transmission based on the overall decision. For example, it can be related technologies or transmission methods in CoMP or FeCoMP. Specifically, the present application does not limit this.

[0267] For example, for the NR (New Radio) system, the first format can include format0_0 and format1_0, and the second format can include format0_1 and format1_1. Optionally, the first format can be a fallback format, and the second format can be a normal format.

[0268] For example, for a Long Term Evolution (LTE) system, the first format can include at least one of format 1, or format 1A, or format 1B, or format 1C, or format 1D, and the second format can include at least one of format 2, or format 2A, or format 2B, or format 2C, or format 2D. Alternatively, the first format can include at least one of format 1, or format 1A, or format 1B, or format 1C, or format 1D, or format 2, or format 2A, or format 2B, or format 2C, and the second format can include format 2D.

[0269] Alternatively, the first format can be a DCI format corresponding to at least one of transmission mode 1 to transmission mode 9 in Table 2, and the second format can be a DCI format corresponding to transmission mode 10 in Table 2.

[0270] Table 2

[0271]

[0272] Of course, the first format and the second format can also be DCI formats defined in future communication systems, and the application does not make specific limitations on the first format and the second format.

[0273] Alternatively, the number of bits included in the DCI can refer to the number of bits carried by the DCI, or the size of the bits carried by the DCI, or the size of the load of the DCI, or the byte of the DCI, or the load of the DCI. For example, the number of bits included in the DCI can be 24 bits, or 40 bits, or 56 bits, etc.

[0274] Alternatively, the feature of the specific field of the DCI can refer to whether a specific field exists in the DCI, or the value of the specific field. For example, the specific field can be a TCI field, etc. Of course, in actual application, the specific field can be set according to actual needs, and the application does not make specific limitations thereon.

[0275] It should be noted that when the DCI feature is determined by the network device, the network device can send the DCI feature to the terminal device.

[0276] Alternatively, the obtained QCL capability can refer to the number of indication information supported by the terminal device for indicating the QCL information of the antenna port of the reference signal, or the number of RS sets included in the indication information supported by the terminal device for indicating the QCL information of the antenna port of the reference signal.

[0277] For example, the QCL capability can refer to that the terminal device supports at least two groups of TCI states for indicating QCL information of antenna ports of reference signals, or supports one group of TCI states for indicating QCL information of antenna ports of reference signals; or, the QCL capability can refer to that the terminal device supports different groups of non-QCL of Demodulation Reference Signal (DMRS) antenna ports, or supports different groups of QCL of DMRS antenna ports; or, the QCL capability can refer to that the terminal device supports a group of RS sets or at least two groups of RS sets in the supported TCI for indicating QCL information of antenna ports of reference signals.

[0278] Optionally, when the QCL capability is determined by the terminal device, the terminal device can send the QCL capability to the network device.

[0279] Optionally, the maximum number of DCIs to be detected obtained refers to the maximum number of DCIs to be detected by the terminal device configured by the network device (for example, a base station) for the terminal device, or the maximum number of DCIs to be detected by the terminal device predefined, or the maximum number of DCIs to be detected by the terminal device (the maximum number of DCIs that can be detected by the terminal device). For example, the maximum number of DCIs to be detected by the terminal device can be 1, 2, or other values, which are not limited in the present application.

[0280] Optionally, when the maximum number of DCIs to be detected is determined by the network device, the network device can send the maximum number of DCIs to be detected by the terminal device to the terminal device. Or, when the maximum number of DCIs to be detected is determined by the terminal device, the terminal device can send the maximum number of DCIs to be detected by the terminal device to the network device.

[0281] Optionally, the capability of the terminal device can include at least one of the number of panels supported by the terminal device, the maximum number of DCIs that can be detected by the terminal device, whether the terminal device supports non-coherent joint transmission, the QCL type that can be supported by the terminal device, or the CSI measurement feedback mode that can be supported by the terminal device. Of course, the capability of the terminal device can also include others, which are not limited in the present application.

[0282] Optionally, the capability of the terminal device is usually related to the self-configuration of the terminal device, that is, the capability of the terminal device is usually determined by the terminal device, and the terminal device can send the capability of the terminal device to the network device.

[0283] Optionally, the acquired data transmission scenario can refer to a scenario in which the number of QCL information is determined to be 1, or a scenario in which the number of QCL information is determined to be greater than 1, or a scenario in which the number of QCL information cannot be determined.

[0284] It should be noted that the above is only an example of the parameters that can determine the number of QCL information, and is not a limitation on the parameters. In actual application, the above parameters can be set according to actual needs, and the present application does not make specific limitations.

[0285] It should be further noted that the number of QCL information can be determined according to one of the above parameters, or the number of QCL information can be determined according to at least two of the above parameters, and the present application does not make specific limitations.

[0286] S302, when the number of QCL information X is determined to be at least two, X QCL information of the antenna port of the data channel is determined.

[0287] It should be noted that when the number of QCL information X is determined to be one, the QCL information can be determined according to the existing technology, and the specific method is described in the existing technology, and the present application does not make specific limitations.

[0288] Optionally, the execution subject of S302 can be a terminal device or a network device.

[0289] Optionally, when the execution subject of S302 is a terminal device, the terminal device can determine X QCL information of the antenna port of the data channel according to at least one of the first indication information set, the second indication information set, or the third indication information set. Alternatively, the network device can determine X QCL information of the antenna port of the data channel according to at least one of the first indication information set, the second indication information set, or the third indication information set, and send the X QCL information to the terminal device, that is, the terminal device can acquire the X QCL information from the network device.

[0290] Optionally, when the execution subject of S302 is a network device, the network device can determine X QCL information of the antenna port of the data channel according to at least one of the first indication information set, the second indication information set, or the third indication information set.

[0291] The first indication information set includes first indication information in the CORESET for indicating the QCL information of the antenna port of the downlink control channel.

[0292] Optionally, the CORESET can be configured by the network device (such as a base station) for the terminal device. At least one first indication information can be included in one CORESET, and each first indication information can be associated with at least one RS set.

[0293] Optionally, the CORESET can refer to a set of time-frequency resources where the control channel transmission is located. The network device can signal the terminal device to inform the terminal device of the set of time-frequency resources where the control channel transmission is located, that is, the configuration information of the CORESET, so that the terminal device detects the control channel according to the configuration information. Or determine the set of time-frequency resources where the control channel transmission is located in a predefined manner, and the terminal device can detect the control channel in the set.

[0294] Optionally, the configuration information of the CORESET can include indication information indicating the quasi co-location information of the antenna port transmitting the control channel.

[0295] Optionally, the first indication information can be a TCI state. The first indication information can be indication information in the configuration information of the CORESET.

[0296] It should be noted that the antenna port of the downlink control channel can be the antenna port of the DMRS of the downlink control channel and / or the antenna port of the phase tracking reference signal (PTRS) of the downlink control channel. The PTRS in the present application can be a reference signal for phase tracking, or other reference signals for channel estimation and / or channel demodulation of data channels or control channels. The specific name can not be limited to phase tracking reference signal, and other names can also be used. Specifically, the present application does not limit this.

[0297] The DMRS in the present application can refer to a reference signal for data demodulation, or a reference signal for channel estimation and / or channel demodulation of data channels or control channels or other signals. The specific name can not be limited to demodulation reference signal, and other names can also be used. Specifically, the present application does not limit this.

[0298] The second indication information set includes second indication information configured by high-layer signaling to indicate the QCL information of the antenna port of the reference signal.

[0299] Optionally, the second indication information can refer to indication information configured (or activated) by RRC signaling to indicate the QCL information of the antenna port of the reference signal, or indication information configured (or activated) by MAC signaling to indicate the QCL information of the antenna port of the reference signal. The specific indication information can be predefined by the protocol, or can be signaled by the network device. Specifically, the present application does not limit this.

[0300] Optionally, each second indication information can be associated with at least one RS set.

[0301] Optionally, the second indication information can be a TCI state. The second indication information can be indication information in configuration information of the CORESET.

[0302] The third indication information set includes third indication information in the DCI received at the latest time for indicating X QCL information of the antenna port of the data channel scheduled by the DCI.

[0303] It should be noted that when the X QCL information of the antenna port of the data channel is determined by the terminal device according to at least one of the first indication information set, the second indication information set, or the third indication information set, the third indication information set includes third indication information in the DCI received at the latest time for indicating the QCL information of the antenna port of the data channel scheduled by the DCI.

[0304] It should be noted that when the X QCL information of the antenna port of the data channel is determined by the network device according to at least one of the first indication information set, the second indication information set, or the third indication information set, the third indication information set includes third indication information in the DCI sent at the latest time for indicating the QCL information of the antenna port of the data channel scheduled by the DCI.

[0305] Optionally, the latest time can also be one or more time units. For example, the time unit can be a slot, or a subframe, or a radio frame, or a half frame, or 5 ms, or 10 ms, or other time units, etc. Of course, in actual application, the time unit can be set according to actual needs, and the present application does not make specific limitations thereto.

[0306] It should be noted that the antenna port of the data channel scheduled by the DCI can be the antenna port of the DMRS of the data channel and / or the antenna port of the PTRS of the data channel.

[0307] The PTRS in the present application can refer to a reference signal for phase tracking, or other reference signals for channel estimation and / or channel demodulation of the data channel or the control channel, and the specific name can not be limited to the phase tracking reference signal, and other names can also be used. Specifically, the present application does not make limitations thereto. The determination method of the QCL information provided by the embodiments of the present application, when the QCL information needs to be determined, the number X of the QCL information is determined first, and when the number X of the QCL information is greater than or equal to 2, the X QCL information of the antenna port of the data channel is determined. In this way, when at least two network devices or at least two antenna panels that are not QCL in the same network device simultaneously send data to the terminal device, the X QCL information of the antenna port of the data channel can also be determined.

[0308] On the basis of any one of the above embodiments, the number X of QCL information can be determined according to one of the following manners, or a combination of at least two manners.

[0309] Manner one: the number of QCL information is determined according to whether the spatial QCL parameter and / or the QCL type D is included in the QCL configuration information of the terminal device.

[0310] Optionally, when it is determined that the spatial QCL parameter is not included in the QCL configuration information of the terminal device, the number of QCL information is determined to be 1.

[0311] Optionally, when it is determined that the spatial QCL parameter is included in the QCL configuration information of the terminal device, the number of QCL information is determined to be E1. Wherein, E1 is greater than or equal to 2, and E1 is a preconfigured parameter, for example, E1 can be 2, or 3, or 4, etc. In actual application process, the size of E1 can be set according to actual needs.

[0312] Optionally, when it is determined that the QCL type D is not included in the QCL configuration information of the terminal device, the number of QCL information is determined to be 1.

[0313] Optionally, when it is determined that the QCL type D is included in the QCL configuration information of the terminal device, the number of QCL information is determined to be E2. Wherein, E2 is greater than or equal to 2, and E2 is a preconfigured parameter, for example, E2 can be 2, or 3, or 4, etc. In actual application process, the size of E2 can be set according to actual needs.

[0314] Manner two: the number of QCL information is determined according to the number of SSBs transmitted by the network device in N time units, wherein N is a positive integer.

[0315] Optionally, the number of QCL information can be determined according to the size relationship between the number of SSBs transmitted by the network device in N time units and the first threshold value. For example, when the number of SSBs transmitted by the network device in the time unit is less than the first threshold value, the number of QCL information is determined to be 1. When the number of SSBs transmitted by the network device in the time unit is greater than or equal to the first threshold value, the number of QCL information is determined to be E3. Or, when the number of SSBs transmitted by the network device in the time unit is less than or equal to the first threshold value, the number of QCL information is determined to be 1. When the number of SSBs transmitted by the network device in the time unit is greater than the first threshold value, the number of QCL information is determined to be E3. Wherein, E3 is greater than or equal to 2, and E3 is a preconfigured parameter, for example, E3 can be 2, or 3, or 4, etc. In actual application process, the size of E3 can be set according to actual needs.

[0316] Optionally, when the number of SSBs transmitted by the network device in the time unit is less than or equal to a first threshold, the number of QCL information is determined to be 1. When the number of SSBs transmitted by the network device in the time unit is greater than another threshold, the number of QCL information is determined to be E3. Wherein, E3 is greater than or equal to 2. Wherein, the first threshold and the other threshold can be different values, specifically, the present application does not limit.

[0317] Optionally, the threshold for determining the number of QCL information in the present application can be different if the number is different, specifically, the present application does not limit.

[0318] Optionally, the number of QCL information can also be determined according to the range to which the number of SSBs transmitted by the network device in the time unit belongs. Wherein, the number of QCL information corresponding to different ranges is different. For example, when the number of SSBs is in the first range, the number of QCL information is determined to be 1. When the number of SSBs is in the second range, the number of QCL information is determined to be 2, and when the number of SSBs is in the third range, the number of QCL information is determined to be 3.

[0319] For example, assuming that the time unit is 5ms, when the number of SSBs transmitted by the network device in 5ms is between 1-4 (first range), the number of QCL information is determined to be 1. When the number of SSBs transmitted by the network device in 5ms is between 5-8 (second range), the number of QCL information is determined to be 2. When the number of SSBs transmitted by the network device in 5ms is between 9-16 (third range), the number of QCL information is determined to be 3.

[0320] It should be noted that the above is only in the form of an example to illustrate each range and the number of QCL information corresponding to each range, and is not limited thereto. In actual application process, each range and the number of QCL information corresponding to each range can be set according to actual needs.

[0321] Method three: determining the number of QCL information according to the obtained subcarrier spacing.

[0322] Optionally, the number of QCL information can be determined according to the size relationship between the obtained subcarrier spacing and the second threshold value. For example, when the obtained subcarrier spacing is less than the second threshold value, the number of QCL information can be determined to be 1. When the obtained subcarrier spacing is greater than or equal to the second threshold value, the number of QCL information can be determined to be E4. Alternatively, when the obtained subcarrier spacing is less than or equal to the second threshold value, the number of QCL information can be determined to be 1. When the obtained subcarrier spacing is greater than the second threshold value, the number of QCL information can be determined to be E4. Wherein, E4 is greater than or equal to 2, and E4 is a pre-configured parameter, for example, E4 can be 2, or 3, or 4, etc. In actual application process, E4 can be set according to actual needs.

[0323] Optionally, when the obtained subcarrier spacing is greater than or equal to the second threshold value, the number of QCL information can be determined to be E4. Alternatively, when the obtained subcarrier spacing is less than or equal to another threshold value, the number of QCL information can be determined to be 1. Wherein, the second threshold value and the other threshold value can be different values, and the present application is not limited thereto.

[0324] Optionally, the threshold value for determining the number of QCL information can be different when the number is different, and the present application is not limited thereto.

[0325] For example, assuming that the second threshold value is 60 kHz, when the subcarrier spacing is less than 60 kHz, the number of QCL information is determined to be 1. When the subcarrier spacing is greater than or equal to 60 kHz, the number of QCL information is determined to be 2.

[0326] Optionally, the number of QCL information can also be determined according to the range to which the subcarrier spacing belongs. Wherein, the number of QCL information corresponding to different ranges is different. For example, when the obtained subcarrier spacing is in a first range, the number of QCL information is determined to be 1. When the obtained subcarrier spacing is in a second range, the number of QCL information is determined to be 2. When the obtained subcarrier spacing is in a third range, the number of QCL information is determined to be 3.

[0327] For example, assuming that the subcarrier spacing is the subcarrier spacing of the BWP, when the subcarrier spacing of the BWP is between 15 kHz and 30 kHz (first range), the number of QCL information is determined to be 1. When the subcarrier spacing of the BWP is between 60 kHz and 120 kHz (second range), the number of QCL information is determined to be 2. When the subcarrier spacing of the BWP is 120 kHz or above (third range), the number of QCL information is determined to be 3.

[0328] It should be noted that the above is only in the form of an example to illustrate the various ranges and the number of QCL information corresponding to each range, and does not limit the same. In actual application, the various ranges and the number of QCL information corresponding to each range can be set according to actual needs.

[0329] Fourthly, the number of QCL information is determined according to the transmission mode of the terminal device.

[0330] Optionally, when the transmission mode of the terminal device is a first transmission mode, the number of QCL information is determined to be 1. The first transmission mode includes single-cell transmission. Of course, in actual application, the first transmission mode can be set according to actual needs, which is not limited in the present application.

[0331] Optionally, when the transmission mode of the terminal device is a second transmission mode, the number of QCL information is determined to be E5. E5 is greater than or equal to 2, and E5 is a pre-configured parameter, for example, E5 can be 2, or 3, or 4, etc. In actual application, the size of E5 can be set according to actual needs. The second transmission mode includes at least one of cooperative transmission, dynamic point selection (DPS) transmission, or non-coherent joint transmission (NCJT). Of course, in actual application, the second transmission mode can be set according to actual needs, which is not limited in the present application.

[0332] Fifthly, the number of QCL information is determined according to the format of the obtained DCI.

[0333] Optionally, the format of the obtained DCI can also refer to the format of the DCI to be received by the terminal device or the format of the DCI corresponding to the terminal device, etc. The present application does not make specific limitation.

[0334] Optionally, when the format of the DCI obtained by the terminal device is a first format, the number of QCL information is determined to be 1.

[0335] Optionally, when the format of the DCI obtained by the terminal device is a second format, the number of QCL information is determined to be E6. E6 is greater than or equal to 2, and E6 is a pre-configured parameter, for example, E6 can be 2, or 3, or 4, etc. In actual application, the size of E6 can be set according to actual needs.

[0336] Sixthly, the number of QCL information is determined according to the number of bits of the obtained DCI, or the size of the load of the DCI, or the byte of the DCI, or the load of the DCI.

[0337] Optionally, the number of bits of the acquired DCI can also refer to the number of bits of the DCI to be received by the terminal device or the number of bits of the DCI corresponding to the terminal device. The present application does not make specific limitations.

[0338] Optionally, the number of QCL information can be determined according to the size relationship between the number of bits of the acquired DCI and the third threshold value. For example, when the number of bits of the acquired DCI is less than or equal to the third threshold value, the number of QCL information is determined to be one. When the number of bits of the acquired DCI is greater than the third threshold value, the number of QCL information is determined to be E7. Or, when the number of bits of the acquired DCI is less than the third threshold value, the number of QCL information is determined to be one. When the number of bits of the acquired DCI is greater than or equal to the third threshold value, the number of QCL information is determined to be E7. Wherein, E7 is greater than or equal to 2, and E7 is a pre-configured parameter, for example, E7 can be 2, or 3, or 4, etc. In actual application process, the size of E7 can be set according to actual needs.

[0339] Optionally, when the number of bits of the acquired DCI is less than the third threshold value, the number of QCL information is determined to be one. When the number of bits of the acquired DCI is greater than or equal to another threshold value, the number of QCL information is determined to be E7. Wherein, E7 is greater than or equal to 2. Wherein, the third threshold value and the other threshold value can be different values, and the present application does not make limitations.

[0340] Optionally, the threshold value for determining the number of QCL information in the present application can be different when the number is different, and the present application does not make limitations.

[0341] In the present application, the control channel can carry control information. For example, the downlink control channel can carry downlink control information, such as DCI. In the case of no special emphasis on the distinction, control information and control channel can also be mixed.

[0342] Optionally, the number of QCL information can also be determined according to the relationship between the number of bits of the acquired DCI and the preset number of bits. For example, when the number of bits of the DCI is A1, the number of QCL information can be determined to be one; when the number of bits of the DCI is A2, the number of QCL information can be determined to be two. A1, A2 are positive integers.

[0343] For example, A1 can take the value of 24bit, A2 can take the value of 40bit, 56bit, etc., or can also be the DCI payload size (control information load size) defined in NR, or the control information load size defined in future communication system, etc. The present application does not make limitations.

[0344] Optionally, the number of QCL information can also be determined according to the range to which the number of bits of the acquired DCI belongs. Different ranges correspond to different numbers of QCL information. For example, when the number of bits of the acquired DCI is in a first range, the number of QCL information is determined to be 1. When the number of bits of the acquired DCI is in a second range, the number of QCL information is determined to be 2, and when the number of bits of the acquired DCI is in a third range, the number of QCL information is determined to be 3.

[0345] For example, when the number of bits of the DCI is less than or equal to 24 bits (first range), the number of QCL information can be determined to be 1. When the number of bits of the DCI is between 25 and 40 bits (second range), the number of QCL information can be determined to be 2. When the number of bits of the DCI is between 41 and 56 bits (third range), the number of QCL information can be determined to be 3.

[0346] It should be noted that the above is only an example of various ranges and the number of QCL information corresponding to each range, and does not limit the same. In actual application, each range and the number of QCL information corresponding to each range can be set according to actual needs.

[0347] Method seven: determining the number of QCL information according to the characteristics of a specific field of the acquired DCI.

[0348] The characteristics of the specific field of the DCI can refer to whether the specific field exists in the DCI, or the value of the specific field.

[0349] Optionally, the number of QCL information can be determined according to whether the specific field exists in the DCI. For example, when the specific field does not exist in the DCI, the number of QCL information is determined to be 1, and when the specific field exists in the DCI, the number of QCL information is determined to be E13. Wherein, E13 is greater than or equal to 2, and E13 is a pre-configured parameter, for example, E13 can be 2, or 3, or 4, etc. In actual application, the size of E13 can be set according to actual needs.

[0350] Optionally, the number of QCL information can be determined according to the value of the specific field of the DCI. The value of the specific field of the DCI and the number of QCL information have a preset corresponding relationship. For example, when the value of the specific field is 1, the number of QCL information is determined to be 1, and when the value of the specific field is 2, the number of QCL information is determined to be 2. Of course, in actual application, the preset corresponding relationship between the value of the specific field of the DCI and the number of QCL information can be set according to actual needs, which is not limited in the present application.

[0351] The eighth mode: determining the number of QCL information according to the number of indication information supported by the terminal device for indicating the QCL information of the antenna port of the reference signal and / or the number of RS sets associated with the indication information supported by the terminal device for indicating the QCL information of the antenna port of the reference signal.

[0352] Optionally, if the number of indication information supported by the terminal device for indicating the QCL information of the antenna port of the reference signal is 1 and the number of RS sets associated with the 1 indication information supported by the terminal device is also 1, it can be determined that the number of QCL information is 1. If the number of indication information supported by the terminal device for indicating the QCL information of the antenna port of the reference signal is greater than 1 or the number of RS sets associated with the indication information supported by the terminal device is greater than 1, it can be determined that the number of QCL information is E8. Wherein, E8 is greater than or equal to 2, E8 is a preconfigured parameter, for example, E8 can be 2, or 3, or 4, etc., in actual application process, the size of E8 can be set according to actual needs.

[0353] Optionally, when the number of indication information supported by the terminal device for indicating the QCL information of the antenna port of the reference signal is greater than 1 or the number of RS sets associated with the indication information supported by the terminal device is greater than 1, the number of QCL information can be determined according to the range to which the total number of RS sets associated with the indication information supported by the terminal device belongs. Wherein, the number of QCL information corresponding to different ranges is different. For example, when the total number of RS sets associated with the indication information supported by the terminal device is in the first range, it is determined that the number of QCL information is 1. When the total number of RS sets associated with the indication information supported by the terminal device is in the second range, it is determined that the number of QCL information is 2, and when the total number of RS sets associated with the indication information supported by the terminal device is in the third range, it is determined that the number of QCL information is 3.

[0354] For example, assuming that the indication information is TCI state, when the total number of RS sets associated with the TCI state supported by the terminal device is 1 (first range), it can be determined that the number of QCL information is 1. When the total number of RS sets associated with the TCI state supported by the terminal device is 2 (second range), it can be determined that the number of QCL information is 2. When the total number of RS sets associated with the TCI state supported by the terminal device is 3 (third range), it can be determined that the number of QCL information is 3.

[0355] It should be noted that the above is only in the form of an example to illustrate each range and the number of QCL information corresponding to each range, and does not limit this. In actual application process, each range and the number of QCL information corresponding to each range can be set according to actual needs.

[0356] The ninth mode is to determine the number of QCL information according to the maximum number of DCI to be detected.

[0357] Optionally, if the maximum number of DCI to be detected is 1, the number of QCL information is determined to be 1. If the maximum number of DCI to be detected is greater than 1, the number of QCL information is determined to be E9. Wherein, E9 is greater than or equal to 2, and E9 can be a pre-configured parameter, for example, E9 can be 2, or 3, or 4, etc. In actual application process, the size of E9 can be set according to actual needs.

[0358] Optionally, the maximum number of DCI to be detected by the terminal device can be informed by the network device to the terminal, or can be determined by the terminal according to a pre-set rule, which is not limited in the present application.

[0359] Optionally, the maximum number of DCI to be detected by the terminal device can be greater than or equal to the actual number of DCI detected by the terminal device, that is, the network device can inform the terminal that the maximum number of DCI to be detected is 2, or the terminal determines that the maximum number of DCI to be detected is 2, but in actual application, the terminal only detects one DCI.

[0360] Optionally, the number of QCL information can also be determined according to the range to which the maximum number of DCI to be detected belongs. Wherein, the number of QCL information corresponding to different ranges is different. For example, when the maximum number of DCI to be detected by the terminal device is in the first range, the number of QCL information is determined to be 1. When the maximum number of DCI to be detected by the terminal device is in the second range, the number of QCL information is determined to be 2. When the maximum number of DCI to be detected by the terminal device is in the third range, the number of QCL information is determined to be 3.

[0361] For example, when the maximum number of DCI to be detected by the terminal device is 1 (the first range), the number of QCL information can be determined to be 1. When the maximum number of DCI to be detected by the terminal device is 2 (the second range), the number of QCL information can be determined to be 2. When the maximum number of DCI to be detected by the terminal device is 3 (the third range), the number of QCL information can be determined to be 3.

[0362] It should be noted that the above is only an example to illustrate the ranges and the number of QCL information corresponding to each range, and is not limited thereto. In actual application process, the ranges and the number of QCL information corresponding to each range can be set according to actual needs.

[0363] The tenth mode is to determine the number of QCL information according to the maximum number of DCI that can be detected by the terminal device.

[0364] Optionally, if the maximum number of DCIs that the terminal device can detect is 1, it is determined that the number of QCL information is 1. If the maximum number of DCIs that the terminal device can detect is greater than 1, it is determined that the number of QCL information is E10. Wherein, E10 is greater than or equal to 2, E10 is a pre-configured parameter, for example, E10 can be 2, or 3, or 4, etc. In actual application process, the size of E10 can be set according to actual needs.

[0365] Optionally, the number of QCL information can also be determined according to the range to which the maximum number of DCIs that the terminal device can detect belongs. Wherein, the number of QCL information corresponding to different ranges is different. For example, when the maximum number of DCIs that the terminal device can detect is in the first range, it is determined that the number of QCL information is 1. When the maximum number of DCIs that the terminal device can detect is in the second range, it is determined that the number of QCL information is 2. When the maximum number of DCIs that the terminal device can detect is in the third range, it is determined that the number of QCL information is 3.

[0366] For example, when the maximum number of DCIs that the terminal device can detect is 1 (the first range), it can be determined that the number of QCL information is 1. When the maximum number of DCIs that the terminal device can detect is 2 (the second range), it can be determined that the number of QCL information is 2. When the maximum number of DCIs that the terminal device can detect is 3 (the third range), it can be determined that the number of QCL information is 3.

[0367] It should be noted that the above is only in the form of an example to illustrate each range and the number of QCL information corresponding to each range, and does not limit it. In actual application process, each range and the number of QCL information corresponding to each range can be set according to actual needs.

[0368] Method eleven: according to the number of panels supported by the terminal device, the number of QCL information is determined.

[0369] Optionally, if the number of panels supported by the terminal device is 1, it is determined that the number of QCL information is 1. If the number of panels supported by the terminal device is greater than 1, it is determined that the number of QCL information is E11. Wherein, E11 is greater than or equal to 2, E11 is a pre-configured parameter, for example, E11 can be 2, or 3, or 4, etc. In actual application process, the size of E11 can be set according to actual needs.

[0370] Optionally, the number of QCL information can also be determined according to the range to which the number of panels supported by the terminal device belongs. Different ranges correspond to different numbers of QCL information. For example, when the number of panels supported by the terminal device is in a first range, the number of QCL information is determined to be 1. When the number of panels supported by the terminal device is in a second range, the number of QCL information is determined to be 2. When the number of panels supported by the terminal device is in a third range, the number of QCL information is determined to be 3.

[0371] For example, when the number of panels supported by the terminal device is 1 (first range), the number of QCL information can be determined to be 1. When the number of panels supported by the terminal device is 2 (first range), the number of QCL information can be determined to be 2. When the number of panels supported by the terminal device is greater than 2 (first range), the number of QCL information can be determined to be 3.

[0372] It should be noted that the above is only an example of the ranges and the number of QCL information corresponding to each range, and does not limit the same. In actual application, the ranges and the number of QCL information corresponding to each range can be set according to actual needs.

[0373] Twelfth mode: The number of QCL information is determined according to the obtained data transmission scenario.

[0374] Optionally, when the data transmission scenario is determined to be 1, the number of QCL information is determined to be 1. When the data transmission scenario cannot be determined, or the data scenario is determined to be greater than 1, the number of QCL information is determined to be E12. Wherein, E12 is greater than or equal to 2, E12 is a pre-configured parameter, for example, E12 can be 2, or 3, or 4, etc. In actual application, the size of E12 can be set according to actual needs.

[0375] Optionally, the data transmission scenario can be determined according to at least one of the QCL configuration information, the SSB transmission characteristics, or the subcarrier spacing information. It should be noted that the process of determining the data transmission scenario can refer to the process of determining the number of QCL information according to at least one of the QCL configuration information, the SSB transmission characteristics, or the subcarrier spacing information, which will not be repeated here.

[0376] It should be noted that in actual application, the number of QCL information can be determined according to one of the above methods, or the number of QCL information can be determined according to a combination of at least two of the above methods.

[0377] Optionally, in the process of determining the number of QCL information according to the combination of at least two manners, only when the number of QCL information is determined as X according to at least two manners, the number of QCL information can be determined as X, X is a positive integer. For example, when the number of QCL information determined according to manner one is 1, and the number of QCL information determined according to manner two is 1, only then can the number of QCL information be determined as 1. When the number of QCL information determined according to manner one is 2, and the number of QCL information determined according to manner two is 2, only then can the number of QCL information be determined as 2.

[0378] Optionally, the number X of QCL information can be determined as 1 according to the following feasible implementation manners. When it is determined that the parameters satisfy at least one of the following conditions, the number X of QCL information can be determined as 1:

[0379] The QCL configuration information of the terminal device does not include a spatial QCL parameter, or does not include QCL type D.

[0380] The number of SSBs transmitted by the network device in N time units is less than or equal to a first threshold value, N is a positive integer.

[0381] The obtained subcarrier spacing is less than or equal to a second threshold value.

[0382] The transmission mode of the terminal device is a first transmission mode, and the first transmission mode includes single-cell transmission.

[0383] The format of the obtained DCI is a first format, and the first format is the format of the DCI used in the first transmission mode.

[0384] The number of bits of the obtained DCI is less than or equal to a third threshold value.

[0385] The obtained DCI does not include the specific field, or the value of the specific field of the obtained DCI belongs to a specific range (including a specific value).

[0386] The number of indication information supported by the terminal device for indicating the QCL information of the antenna port of the reference signal is 1, and the number of RS sets associated with the indication information supported by the terminal device for indicating the QCL information of the antenna port of the reference signal is 1.

[0387] The maximum number of DCIs to be detected is 1.

[0388] The maximum number of DCIs that the terminal device can detect is 1.

[0389] The number of panels supported by the terminal device is 1.

[0390] The scenario of data transmission is that the number of QCL information is determined to be 1.

[0391] Optionally, the number X of QCL information is determined to be 2 according to the following feasible implementation manner, when it is determined that the parameters satisfy at least one of the following conditions, the number X of QCL information is determined to be 2:

[0392] The QCL configuration information of the terminal device includes spatial QCL parameters, or includes QCL type D.

[0393] The number of SSBs transmitted by the network device in N time units obtained by the terminal device is greater than or equal to a first threshold, N is a positive integer;

[0394] The subcarrier spacing obtained is greater than or equal to a second threshold.

[0395] The transmission mode of the terminal device is a second transmission mode, and the second transmission mode includes one of cooperative transmission, dynamic point selection DPS transmission, or non-coherent joint transmission NCJT.

[0396] The format of the obtained DCI is a second format, and the second format is the format of the DCI adopted in the second transmission mode.

[0397] The number of bits of the obtained DCI is greater than or equal to a third threshold.

[0398] The obtained DCI includes a specific field, or the value of the specific field of the obtained DCI belongs to a specific range (including a specific value).

[0399] The number of indication information supported by the terminal device for indicating QCL information of antenna ports of reference signals is at least two.

[0400] The number of RS sets associated with the indication information supported by the terminal device for indicating QCL information of antenna ports of reference signals is at least two.

[0401] The maximum number of DCIs to be detected is greater than 1.

[0402] The maximum number of DCIs that the terminal device can detect is greater than 1.

[0403] The number of panels supported by the terminal device is greater than 1.

[0404] The scenario of data transmission is a scenario in which the number of QCL information cannot be determined, or the number of QCL information is determined to be greater than 1.

[0405] Optionally, the first threshold, the second threshold, and / or the third threshold of the number X of the determined QCL information being greater than or equal to 2 can be the same as or different from the first threshold, the second threshold, and / or the third threshold of the number X of the determined QCL information being 1, which is not limited herein.

[0406] It should be noted that the number of QCL information can also be determined to be 3, 4, etc. by the above similar manner, and the present application will not be repeated here.

[0407] On the basis of any one of the above embodiments, the X QCL information can be determined according to the following manner or a combination of at least two manners:

[0408] Manner one: determining A QCL information of the X QCL information of the antenna port of the data channel according to the first indication information set, wherein A is a positive integer, and A is less than or equal to X.

[0409] Optionally, A satisfies the following formula one:

[0410]

[0411] wherein M is the total number of the minimum CORESET, m is the mth CORESET in the minimum CORESET, k is the kth indication information in the mth CORESET in the minimum CORESET, Y m,k is the number of RS sets associated with the kth indication information in the mth CORESET in the minimum CORESET, n m is the number of indication information in the mth CORESET in the minimum CORESET. The first indication information set includes the indication information in the above formula, and the number thereof is

[0412] Optionally, at least two of the indication information involved in the above formula are the same.

[0413] Optionally, all the indication information involved in the above formula are different.

[0414] Optionally, at least two of the RS sets involved in the above formula are the same.

[0415] Optionally, all the RS sets involved in the above formula are different. The RS sets being different can include at least one RS identification ID being different and / or at least one QCL type being different.

[0416] Optionally, the M CORESETs with the smallest identifiers are M CORESETs with the smallest identifiers among the CORESETs configured for the terminal device in the one or more latest time units. The time unit can be a slot, a subframe, a radio frame, a half frame, 5 ms, 10 ms, or another time unit, for example. Optionally, the one or more latest time units belong to a time window, and the size of the time window can be defined by a protocol, pre-configured in the terminal device or the network device, notified by the network device to the terminal device, or determined by the network device and the terminal device according to a rule, which is not limited here.

[0417] Optionally, the M CORESETs with the smallest identifiers are M CORESETs with the smallest identifiers among the CORESETs configured for the terminal device.

[0418] Optionally, when A is equal to X, the X QCL information can be determined according to the first manner only.

[0419] Optionally, when A is less than X, the X QCL information can be determined in combination of the first manner and at least one of the other two manners. For example, A QCL information is determined according to the first manner, and the other X-A QCL information is determined according to at least one of the other two manners.

[0420] Optionally, the first indication information in the first indication information set satisfies a first rule, and the first rule includes at least one of the following four rules:

[0421] Rule 1: The first indication information is in the A CORESETs with the smallest identifiers. Each of the A CORESETs includes one first indication information, and the first indication information is associated with one RS set.

[0422] Optionally, the identifier of the CORESET can be configured by the network device through high-layer signaling. For example, the network device can configure the identifier of the CORESET through RRC signaling.

[0423] Optionally, the indication information in the CORESET can be the indication information in the CORESET other than the common search space or the common CORESET.

[0424] Optionally, the indication information in the CORESET can be the indication information in the CORESET corresponding to the terminal-level (UE-specific) search space.

[0425] Optionally, the A smallest CORESETs can be determined from the CORESETs (or the CORESETs sent by the network device) received by the terminal device in the last one or more time units. For example, the time unit can be a slot, or a subframe, or a radio frame, or a half frame, or 5 ms, or 10 ms, or other time units, etc.

[0426] Optionally, the A smallest CORESETs can be determined from the CORESETs configured to the terminal device and to be detected in the last one or more time units. For example, the time unit can be a slot, or a subframe, or a radio frame, or a half frame, or 5 ms, or 10 ms, or other time units, etc.

[0427] Optionally, the A smallest CORESETs can also be determined from all the CORESETs (or all the CORESETs sent by the network device) received by the terminal device.

[0428] It should be noted that the different CORESETs in the A CORESETs can include the same first indication information or different first indication information.

[0429] For example, assuming that the indication information is a TCI state, the first indication information set is a first TCI state set, and assuming that the CORESET identifier, the TCI state in each CORESET, and the RS set associated with each TCI state are as shown in Table 3:

[0430] Table 3

[0431] CORESET TCI status in CORESET TCI state associated RS set CORESET0 TCI0 RS set0 CORESET1 TCI1 RS set1 CORESET2 TCI2 RS set2 …… …… ……

[0432] Assuming that A is 2, since CORESET0 and CORESET1 each include only one TCI state, and each TCI state is associated with only one RS set, the TCI states (TCI0 in CORESET0 and TCI1 in CORESET1) in the A = 2 smallest CORESETs (CORESET0 and CORESET1) can be determined as the TCI states in the first TCI state set. At this time, the TCI states included in the A = 2 CORESETs (CORESET0 and CORESET1) are different.

[0433] For example, assuming that the indication information is a TCI state, the first indication information set is a first TCI state set, and assuming that the CORESET identifier (also referred to as an identifier or an index), the TCI state in each CORESET, and the RS set associated with each TCI state are as shown in Table 4:

[0434] Table 4

[0435]

[0436] Assuming A is 3, since CORESET0, CORESET2 and CORESET3 each include only one TCI state, and each TCI state is associated with only one RS set, the TCI states (TCI0 in CORESET0, TCI0 in CORESET2, and TCI4 in CORESET3) in the A=3 CORESETs (CORESET0, CORESET2 and CORESET3) with the smallest numbers can be determined as the TCI states in the first TCI state set. At this time, there are the same TCI states in the TCI states included in the A=3 CORESETs (CORESET0, CORESET1 and CORESET2).

[0437] Rule two, identify the first indication information in the smallest A CORESETs. Each of the A CORESETs includes one first indication information, and different CORESETs in the A CORESETs include different first indication information, and the first indication information is associated with one RS set.

[0438] Optionally, the smallest A CORESETs can be determined in the CORESETs (or the CORESETs sent by the network device in the latest one or more time units) received by the terminal device in the latest one or more time units. For example, the time unit can be a slot, or a subframe, or a radio frame, or a half frame, or 5ms, or 10ms, or other time units, etc.

[0439] Optionally, the smallest A CORESETs can be determined in the CORESETs configured to the terminal device and needed to be detected in the latest one or more time units. For example, the time unit can be a slot, or a subframe, or a radio frame, or a half frame, or 5ms, or 10ms, or other time units, etc.

[0440] Optionally, the smallest A CORESETs can also be determined in all CORESETs (or all CORESETs sent by the network device) received by the terminal device.

[0441] For example, assuming that the indication information is a TCI state, the first indication information set is the first TCI state set, and assuming that the numbers of CORESETs, the TCI states in each CORESET, and the RS sets associated with each TCI state are as shown in Table 5:

[0442] Table 5

[0443] CORESET TCI status in CORESET TCI state associated RS set CORESET0 TCI0 RS set0 CORESET1 TCI0 RS set0 CORESET2 TCI1 RS set1 …… …… ……

[0444] Assuming A is 2, since CORESET0 and CORESET2 each include only one TCI state, and each TCI state is associated with one RS set, and CORESET0 and CORESET2 include different TCI states, the TCI states (TCI0 in CORESET0 and TCI1 in CORESET2) in the A = 2 CORESETs (CORESET0 and CORESET2) with the smallest number and different included TCI states can be determined as the TCI states in the first TCI state set. At this time, the TCI states included in the A = 2 CORESETs (CORESET0 and CORESET2) are different.

[0445] Rule three, identify A first indication information in the smallest P CORESETs, wherein at least one of the P CORESETs includes at least two first indication information, P is a positive integer and less than A, and the first indication information is associated with one RS set; wherein P is a positive integer greater than or equal to 1.

[0446] Optionally, the smallest P CORESETs can be determined in the CORESETs (or the CORESETs sent by the network device in the last one or more time units) received by the terminal device in the last one or more time units. For example, the time unit can be a slot, or a subframe, or a radio frame, or a half frame, or 5ms, or 10ms or other time units, etc.

[0447] Optionally, the smallest P CORESETs can be determined in the CORESETs configured to the terminal device in the last one or more time units. For example, the time unit can be a slot, or a subframe, or a radio frame, or a half frame, or 5ms, or 10ms or other time units, etc.

[0448] Optionally, the smallest P CORESETs can also be determined in all CORESETs (or all CORESETs sent by the network device) received by the terminal device.

[0449] For example, assuming that the indication information is a TCI state, the first indication information set is the first TCI state set, and assuming that the number of CORESETs, the TCI state in each CORESET, and the RS set associated with each TCI state are as shown in Table 6:

[0450] Table 6

[0451]

[0452]

[0453] Assuming A is 2, since CORESET1 includes two TCI states, the TCI states in the P = 1 CORESET with the smallest number (CORESET1) (TCI0 in CORESET1, TCI1 in CORESET1) can be determined as the TCI states in the first TCI state set.

[0454] For example, assuming the indication information is a TCI state, the first indication information set is the first TCI state set, and assuming the numbers of CORESETs, the TCI states in each CORESET, and the RS sets associated with each TCI state are as shown in Table 7:

[0455] Table 7

[0456]

[0457] Assuming A is 3, since CORESET0 includes one TCI state and CORESET1 includes two TCI states, the TCI states in the P = 2 CORESETs with the smallest numbers (CORESET0 and CORESET1) (TCI0 in CORESET0, TCI1 in CORESET1, and TCI1 in CORESET1) can be determined as the TCI states in the first TCI state set.

[0458] Rule four, identify Y first indication information in the smallest Q CORESETs, all or part of the first indication information (such as at least one first indication information) included in the Q CORESETs is associated with at least two reference signal sets RS sets, wherein Q is a positive integer and less than A, and Y is a positive integer and less than A.

[0459] Optionally, the smallest Q CORESETs can be determined in the CORESETs received by the terminal device in the last one or more time units (or the CORESETs sent by the network device in the last one or more time units). For example, the time unit can be a slot, or a subframe, or a radio frame, or a half frame, or 5ms, or 10ms, or other time units, etc.

[0460] Optionally, the smallest Q CORESETs can also be determined in all CORESETs received by the terminal device (or all CORESETs sent by the network device).

[0461] For example, assuming the indication information is a TCI state, the first indication information set is the first TCI state set, and assuming the numbers of CORESETs, the TCI states in each CORESET, and the RS sets associated with each TCI state are as shown in Table 8:

[0462] Table 8

[0463]

[0464] Assuming A is 2, since TCI1 in CORESET1 is associated with two RS sets, Y = 1 TCI state (TCI1) in the Q = 1 CORESET (CORESET1) with the smallest number can be determined as the TCI state in the first TCI state set.

[0465] For example, assuming the indication information is a TCI state, the first indication information set is the first TCI state set, and assuming the number of CORESETs, the TCI state in each CORESET, and the RS set associated with each TCI state are as shown in Table 9:

[0466] Table 9

[0467]

[0468] Assuming A is 3, since TCI0 in CORESET0 is associated with one RS set and TCI1 in CORESET1 is associated with two RS sets, Y = 2 TCI states (TCI0 in CORESET0 and TCI1 in CORESET1) in the Q = 2 CORESETs (CORESET0 and CORESET1) with the smallest number can be determined as the TCI states in the first TCI state set.

[0469] Optionally, the first rule can be defined by a protocol, pre-set in the terminal device or the network device, can be notified to the terminal device by the network device, or can be determined by the network device and the terminal device according to the rule, which is not limited here.

[0470] It should be noted that the above is only a first rule in the form of an example, and is not a limitation of the first rule. In actual application, the first rule can be set according to actual needs, and the present application does not make specific limitations.

[0471] Method two: determining B of the X QCL information of the antenna port of the data channel according to the second indication information set. Wherein B is a positive integer, and B is less than or equal to X.

[0472] Optionally, B satisfies the following formula two:

[0473]

[0474] Wherein D is the total number of the smallest second indication information, d is the dth second indication information in the smallest second indication information, and Zd is the number of RS sets associated with the dth second indication information in the minimum second indication information. The second indication information set includes the indication information in the above formula, and the number thereof is D.

[0475] Optionally, at least two of the indication information involved in the above formula are the same.

[0476] Optionally, all the indication information involved in the above formula are different.

[0477] Optionally, at least two of the RS sets involved in the above formula are the same.

[0478] Optionally, all the RS sets involved in the above formula are different. The RS sets being different can include at least one RS identification ID in the RS set being different, and / or at least one QCL type being different.

[0479] Optionally, the second indication information is a TCI state.

[0480] Optionally, when B is equal to X, then only the second mode can be used to determine the X QCL information.

[0481] Optionally, when B is less than X, the X QCL information can be determined in combination of the second mode and at least one of the other two modes. For example, B QCL information is determined according to the second mode, and another X-B QCL information is determined according to at least one of the other two modes.

[0482] Optionally, the second indication information in the second indication information set satisfies a second rule, and the second rule includes at least one of the following two rules:

[0483] Rule one, the minimum B second indication information is identified, and the second indication information is associated with one RS set.

[0484] For example, assuming that the second indication information is a second TCI state, the second indication information set is a second TCI state set, and assuming that the second TCI state and the RS set associated with each second TCI state are as shown in Table 10:

[0485] Table 10

[0486] Second TCI state The RS set associated with the second TCI state TCI0 RS set0 TCI1 RS set1 TCI2 RS set2 TCI3 RS set3 TCI4 RS set4 …… ……

[0487] Assuming that B is 2, since TCI0 is associated with 1 RS set and TCI1 is associated with 1 RS set, the minimum B=2 second TCI states (TCI0 and TCI1) can be determined as the TCI states in the second TCI state set.

[0488] For example, assuming the indication information is a TCI state, the second indication information set is a second TCI state set, and further assuming the second TCI states and the RS sets associated with each second TCI state are as shown in Table 11:

[0489] Table 11

[0490]

[0491] Assuming B is 3, since TCI0 is associated with 1 RS set, TCI2 is associated with 1 RS set, and TCI3 is associated with 1 RS set, the K = 3 second TCI states with the smallest numbers (TCI0, TCI2, and TCI3) can be determined as the TCI states in the second TCI state set.

[0492] Rule two, identify the smallest K second indication information, and all or part of the K second indication information (such as at least one second indication information) in the K second indication information is associated with at least two RS sets, K is a positive integer and less than B.

[0493] For example, assuming the indication information is a TCI state, the second indication information set is a second TCI state set, and further assuming the second TCI states and the RS sets associated with each second TCI state are as shown in Table 12:

[0494] Table 12

[0495]

[0496] Assuming B is 2, since TCI1 is associated with 2 RS sets, the K = 1 second TCI state with the smallest number (TCI1) can be determined as the TCI state in the second TCI state set.

[0497] For example, assuming the indication information is a TCI state, the second indication information set is a second TCI state set, and further assuming the second TCI states and the RS sets associated with each second TCI state are as shown in Table 13:

[0498] Table 13

[0499]

[0500] Assuming B is 3, since TCI0 is associated with 1 RS set and TCI1 is associated with 2 RS sets, the K = 2 second TCI states with the smallest numbers (TCI0 and TCI1) can be determined as the TCI states in the second TCI state set.

[0501] Optionally, the second indication information in the second set of indication information can be indication information configured through RRC signaling, or can be indication information activated through MAC signaling. Optionally, the determination rule of the second indication information can be informed by the network device to the terminal device through signaling, or can be predefined by a protocol, and the present application does not limit this.

[0502] Optionally, the second rule can be defined by a protocol, pre-set in the terminal device or the network device, can be notified to the terminal device by the network device, or can be determined by the network device and the terminal device according to the rule, and the present application does not limit this.

[0503] It should be noted that the above is only in the form of an example to illustrate the second rule, and is not a limitation of the second rule. In actual application, the second rule can be set according to actual needs, and the present application does not specifically limit this.

[0504] Method three: determining C of X QCL information of the antenna port of the data channel according to a third set of indication information, wherein C is a positive integer, and C is less than or equal to X.

[0505] Optionally, C satisfies the following formula three:

[0506]

[0507] wherein H is the total number of DCIs received (or transmitted) at the latest time, h is the hth DCI in the DCIs received (or transmitted) at the latest time, t is the tth indication information in the hth DCI in the DCIs received (or transmitted) at the latest time, Y h,t is the number of RS sets associated with the tth indication information in the hth DCI in the DCIs received (or transmitted) at the latest time, n h is the number of indication information in the hth DCI in the DCIs received (or transmitted) at the latest time. The third set of indication information includes the indication information in the above formula, and the number thereof is

[0508] It should be noted that at the terminal device side, the above parameters are all received at the latest time. At the network device side, the above parameters are all parameters transmitted at the latest time.

[0509] Optionally, at least two of the indication information involved in the above formula are the same.

[0510] Optionally, all the indication information involved in the above formula are different.

[0511] Optionally, at least two of the RS sets involved in the above formula are the same.

[0512] Optionally, the RS sets involved in the above formula are all different. The RS sets being different can include at least one RS identification ID in the RS sets being different, and / or at least one QCL type being different.

[0513] Optionally, the DCI received (or transmitted) at the latest time can be the DCI received (or transmitted) at one or more latest times, such as the DCI received (or transmitted) in one or more latest time units. The time unit can be a time slot, or a subframe, or a radio frame, or a half frame, or 5 ms, or 10 ms, or other time units, etc. Optionally, the one or more latest times can belong to a time window, the size of the time window can be defined by a protocol, pre-set in the terminal device or the network device, can also be notified by the network device to the terminal device, and can also be determined by the network device and the terminal device according to a rule, which is not limited here.

[0514] Optionally, when C is equal to X, the X QCL information can be determined only according to the first mode.

[0515] Optionally, when C is less than X, the X QCL information can be determined in combination with the third mode and at least one of the other two modes. For example, C QCL information is determined according to the third mode, and another X-C QCL information is determined according to at least one of the other two modes.

[0516] Optionally, the third indication information in the third indication information set satisfies a third rule, and the third rule includes at least one of the following four rules:

[0517] Rule one, the third indication information in the C DCIs received (or transmitted) at the latest time, each DCI includes one third indication information and the third indication information is associated with one RS set.

[0518] It should be noted that the third indication information included in the C DCIs can be the same or different.

[0519] For example, assuming that the indication information is a TCI state, the third indication information set is a third TCI state set, and assuming that the identification of the DCI received at the latest time, the TCI state in the DCI, and the RS set associated with each TCI state are as shown in Table 14, wherein the smaller the identification of the DCI indicates the more recently received DCI.

[0520] Table 14

[0521] DCI logo TCI status TCI state associated RS set DCI0 TCI0 RS set0 DCI1 TCI1 RS set1 DCI2 TCI2 RS set2 DCI3 TCI3 RS set3 DCI4 TCI4 RS set4 …… …… ……

[0522] Assuming C is 2, since each of DCI0 and DCI1 includes one TCI state, and each TCI state is associated with one RS set, the TCI states in the C=2 DCIs most recently received (TCI0 in DCI0 and TCI1 in DCI1) can be determined as the TCI states in the third TCI state set. At this time, the TCI states included in the C=2 DCIs (DCI0 and DCI1) are all different.

[0523] For example, assuming the indication information is a TCI state, the third indication information set is a third TCI state set, and assuming the identity of the DCI most recently received, the TCI state in the DCI, and the RS set associated with each TCI state are as shown in Table 15:

[0524] Table 15

[0525]

[0526] Assuming C is 3, since each of DCI0, DCI1 and DCI3 includes one TCI state, and each TCI is associated with one RS set, the TCI states in the C=3 DCIs most recently received (TCI0 in DCI0, TCI1 in DCI1 and TCI1 in DCI3) can be determined as the TCI states in the third TCI state set. At this time, there is a same TCI state among the TCI states included in the C=2 DCIs (DCI0, DCI1 and DCI3).

[0527] Rule two, the third indication information in the C DCIs most recently received (or transmitted). Each of the C DCIs includes one third indication information and the third indication information included in different DCIs of the C DCIs is different, and the third indication information is associated with one reference signal set.

[0528] For example, assuming the indication information is a TCI state, the third indication information set is a third TCI state set, and assuming the identity of the DCI most recently received, the TCI state in the DCI, and the RS set associated with each TCI state are as shown in Table 16:

[0529] Table 16

[0530]

[0531] Assuming C is 2, since one TCI state is included in each of DCI0 and DCI1, and each TCI state is associated with one RS set, and the TCI states included in DCI0 and DCI1 are different, the TCI states (TCI2 in DCI0 and TCI1 in DCI1) in the C=2 DCIs received most recently can be determined as the TCI states in the third TCI state set.

[0532] For example, assuming the indicated information is a TCI state, the third indicated information set is a third TCI state set, and assuming the TCI states in the DCIs received most recently and the RS sets associated with each TCI state are as shown in Table 17:

[0533] Table 17

[0534]

[0535] Assuming C is 3, since one TCI state is included in each of DCI0, DCI1 and DCI5, and each TCI state is associated with one RS set, and the TCI states included in DCI0, DCI1 and DCI5 are all different, the TCI states (TCI0 in DCI0, TCI1 in DCI1 and TCI4 in DCI5) in the C=3 DCIs received most recently can be determined as the TCI states in the third TCI state set.

[0536] Rule three, C third indicated information in K DCIs received (or transmitted) most recently, all or part (such as at least one) of the K DCIs includes at least two third indicated information, K is a positive integer and less than C, and the third indicated information is associated with one reference signal set.

[0537] For example, assuming the indicated information is a TCI state, the third indicated information set is a third TCI state set, and assuming the identities of the DCIs received most recently, the TCI states in the DCIs, and the RS sets associated with each TCI state are as shown in Table 18:

[0538] Table 18

[0539]

[0540] Assuming C is 2, since two TCI states are included in DCI2, and each TCI state is associated with one RS set, the TCI states (TCI2 in DCI2 and TCI3 in DCI2) in the K=1 DCI (DCI2) received most recently can be determined as the TCI states in the third TCI state set.

[0541] For example, assuming the indication information is TCI state, the third indication information set is the third TCI state set, and assuming the identity of the DCI received at the latest time, the TCI state in the DCI, and the RS set associated with each TCI state are as shown in Table 19:

[0542] Table 19

[0543]

[0544] Assuming C is 3, since one TCI state is included in DCI1, two TCI states are included in DCI2, and each TCI state is associated with one RS set, the TCI states (TCI1 in DCI1, TCI2 in DCI2, and TCI3 in DCI2) in the K=2 DCIs (DCI1 and DCI2) received at the latest time can be determined as the TCI states in the third TCI state set.

[0545] Rule four, Z third indication information in T DCIs received (or sent) at the latest time, all or part (such as at least one) of the third indication information in the third indication information in the T DCIs is associated with at least two reference signal sets RS set, T is a positive integer and less than C, and Z is a positive integer and less than C.

[0546] Among them, all or part (such as at least one) of the T DCIs can include at least one third indication information.

[0547] For example, assuming the indication information is TCI state, the third indication information set is the third TCI state set, and assuming the identity of the DCI received at the latest time, the TCI state in the DCI, and the RS set associated with each TCI state are as shown in Table 20:

[0548] Table 20

[0549]

[0550] Assuming C is 2, since TCI2 included in DCI2 is associated with two RS sets, Z=1 TCI state (TCI2 in DCI2) in the T=1 DCI (DCI2) received at the latest time can be determined as the TCI state in the third TCI state set.

[0551] For example, assuming the indication information is TCI state, the third indication information set is the third TCI state set, and assuming the identity of the DCI received at the latest time, the TCI state in the DCI, and the RS set associated with each TCI state are as shown in Table 21:

[0552] Table 21

[0553]

[0554] Assuming C is 3, since TCI1 included in DCI1 is associated with one RS set, and TCI2 included in DCI2 is associated with two RS sets, Z=2 TCI states (TCI1 in DCI1 and TCI2 in DCI2) in the K=2 DCIs (DCI1 and DCI2) received most recently can be determined as the TCI states in the third TCI state set.

[0555] Optionally, the third rule can be defined by a protocol, pre-set in the terminal device or the network device, can be notified to the terminal device by the network device, and can be determined by the network device and the terminal device according to the rule, which is not limited here.

[0556] It should be noted that the above is only in the form of an example to illustrate the third rule, and is not a limitation of the third rule. In actual application, the third rule can be set according to actual needs, and the present application does not make specific limitations.

[0557] Optionally, the TCI states in the DCIs received in a time window can be used to determine the QCL information, or the TCI states in the DCIs received in multiple time windows can be used to determine the QCL information. The time window can be pre-defined by a protocol, or can be notified to the terminal device by the network device. Specifically, the present application does not make limitations.

[0558] For example, assuming that the number of QCL information is 2, and assuming that the terminal device receives a TCI state in a DCI most recently in a time window, and the one TCI state is associated with two RS sets, two QCL information can be determined according to the one TCI state.

[0559] For example, assuming that the number of QCL information is 2, and assuming that the terminal device receives a TCI state in a DCI most recently at the latest time in a first time window, and the one TCI state is associated with one RS set (assuming CSI-RS resource 1), and assuming that the terminal device detects a TCI state in a DCI in a second time window, and the one TCI state is associated with two RS sets (assuming CSI-RS resource 0 and CSI-RS resource 2). Two QCL information can be determined according to the two RS sets (CSI-RS resource 1 and CSI-RS resource 0) associated with the two TCI states.

[0560] It should be noted that the X QCL information of the antenna port of the data channel can be determined according to one or two or three of the first indication information set, the second indication information set, or the third indication information set. In the following, the process of determining the X QCL information according to one indication information set is described by Example 1, the process of determining the X QCL information according to two indication information sets is described by Example 2, and the process of determining the X QCL information according to three indication information sets is described by Example 3.

[0561] Example 1, determining X QCL information according to one indication information set.

[0562] The one indication information set is the first indication information set, X is 2, and the first rule is rule one of the four rules shown in the above manner one. The indication information is a TCI state, and the network device configures a CORESET through high-layer signaling such as RRC, as shown in Table 22:

[0563] Table 22

[0564] CORESET TCI status in CORESET TCI state associated RS set CORESET0 TCI0 RS set0 CORESET1 TCI1 RS set1 CORESET2 TCI2 RS set2 …… …… ……

[0565] Since X = 2, only one TCI state is included in CORESET0 and CORESET1, and each TCI state is associated with one RS set, therefore, the TCI states (TCI0 in CORESET0 and TCI1 in CORESET1) in the A = 2 CORESETs (CORESET0 and CORESET1) with the smallest number can be determined as the TCI states in the first TCI state set.

[0566] One QCL information is determined according to the RS set0 associated with TCI0 in the first TCI state set, and another QCL information is determined according to the RS set1 associated with TCI1.

[0567] Example 2, determining X QCL information according to two indication information sets.

[0568] The two indication information sets are the first indication information set and the second indication information set, X is 2, and one QCL information (A = 1) is determined according to the indication information in the first indication information set, and another QCL information (B = 1) is determined according to the indication information in the second indication information set. For example, the first rule is rule one of the four rules shown in the above manner one. The second rule is rule one of the two rules shown in the above manner two. For example, the indication information is a TCI state, and the network device configures a CORESET through RRC, as shown in Table 23:

[0569] Table 23

[0570] CORESET TCI status in CORESET TCI state associated RS set CORESET0 TCI1-0 RS set1-0 CORESET1 TCI1-1 RS set1-1 CORESET2 TCI1-2 RS set1-2 …… …… ……

[0571] Since A = 1, CORESET0 only includes one TCI state (TCI1-0), and TCI1-0 is only associated with one RS set, it can be determined that TCI1-0 is included in the first TCI state set.

[0572] The second TCI state is shown in Table 24:

[0573] Table 24

[0574]

[0575]

[0576] Since B = 1, TCI2-0 is only associated with one RS set, it can be determined that TCI2-0 is included in the second TCI state set.

[0577] Since TCI1-0 is included in the first TCI state set and TCI2-0 is included in the second TCI state set, one QCL information can be determined according to the RS set1-0 associated with TCI1-0, and another QCL information can be determined according to the RS set2-0 associated with TCI2-0.

[0578] Example 3, determining X QCL information according to three indication information sets.

[0579] The three indication information sets are the first indication information set, the second indication information set, and the third indication information set, X is 3, and one QCL information is determined according to the indication information in the first indication information set (A = 1), one QCL information is determined according to the indication information in the second indication information set (B = 1), and another QCL information is determined according to the indication information in the third indication information set (C = 1). For example, the first rule is rule one of the four rules shown in the above manner one. The second rule is rule one of the two rules shown in the above manner two. The third rule is rule one of the four rules shown in the above manner three. For example, the indication information is a TCI state, and the CORESET configured by the network device through RRC is shown in Table 25:

[0580] Table 25

[0581] CORESET TCI status in CORESET TCI state associated RS set CORESET0 TCI1-0 RS set1-0 CORESET1 TCI1-1 RS set1-1 CORESET2 TCI1-2 RS set1-2 …… …… ……

[0582] Since A = 1, CORESET0 only includes one TCI state (TCI1-0), and TCI1-0 is only associated with one RS set, it can be determined that TCI1-0 is included in the first TCI state set.

[0583] The second TCI state is shown in Table 26.

[0584] Table 26

[0585] Second TCI state TCI state associated RS set TCI2-0 RS set2-0 TCI2-1 RS set2-1 TCI2-2 RS set2-2 TCI2-3 RS set2-3 TCI2-4 RS set2-4 …… ……

[0586] Since B=1, the TCI2-0 is only associated with one RS set, it can be determined that the second TCI state set includes the TCI2-0.

[0587] The identification of the DCI received at the latest time, the TCI state in the DCI, and the RS set associated with each TCI state are shown in Table 27.

[0588] Table 27

[0589]

[0590]

[0591] Since C=1, the DCI0 includes one TCI state (TCI3-0), and the TCI3-0 is only associated with one RS set, it can be determined that the third TCI state set includes the TCI3-0.

[0592] Since the first TCI state set includes the TCI1-0, the second TCI state set includes the TCI2-0, and the third TCI state set includes the TCI3-0, one QCL information can be determined according to the RS set1-0 associated with the TCI1-0, one QCL information can be determined according to the RS set2-0 associated with the TCI2-0, and another QCL information can be determined according to the RS set3-0 associated with the TCI3-0.

[0593] The above describes the method for determining the quasi co-location information shown in the present application. Figure 2 and Figure 3 The method for determining the quasi co-location information shown in the present application is described in detail. The following describes the apparatus and device involved in the embodiments of the present application. Figures 4 to 6 The apparatus and device involved in the embodiments of the present application are described in detail.

[0594] Figure 4 is a structural schematic diagram of a terminal device provided by the present application. The terminal device can be applied to Figure 1 the system shown in the above method embodiments to perform the functions of the terminal device. For ease of illustration, Figure 4 only the main components of the terminal device are shown. As Figure 4As shown, the terminal device 40 includes a processor, a memory, a control circuit, an antenna and an input / output device. The processor is mainly used for processing communication protocols and communication data, controlling the whole terminal device, executing software programs, processing data of the software programs, for example, for supporting the terminal device to perform the actions described in the above method embodiments, such as determining the number X of QCL information, determining X QCL information of the antenna port of the data channel, etc. The memory is mainly used for storing software programs and data, for example, storing the correspondence between the indication information and the combination information described in the above embodiments, etc. The control circuit is mainly used for conversion between baseband signals and radio frequency signals and processing of the radio frequency signals. The control circuit and the antenna together can also be called a transceiver, which is mainly used for transmitting and receiving radio frequency signals in the form of electromagnetic waves. The input / output device, such as a touch screen, a display screen, a keyboard, etc., is mainly used for receiving user input data and outputting data to the user.

[0595] When the terminal device is powered on, the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be transmitted wirelessly, the processor performs baseband processing on the data to be transmitted, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal, and transmits the radio frequency signal in the form of electromagnetic waves through the antenna. When data is transmitted to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data.

[0596] Those skilled in the art can understand that, in order to facilitate the description, Figure 4 Only one memory and one processor are shown. In actual terminal devices, there can be multiple processors and multiple memories. The memory can also be referred to as a storage medium or a storage device, etc., and the embodiments of the present application do not limit this.

[0597] As an optional implementation manner, the processor can include a baseband processor and / or a central processor. The baseband processor is mainly used for processing communication protocols and communication data. The central processor is mainly used for controlling the whole terminal device, executing software programs, and processing data of the software programs. Figure 4The processor in the terminal device can integrate the functions of a baseband processor and a central processor. Those skilled in the art can understand that the baseband processor and the central processor can also be independent processors, which are interconnected through a bus or the like. Those skilled in the art can understand that the terminal device can include multiple baseband processors to accommodate different network modes, and the terminal device can include multiple central processors to enhance the processing capability of the terminal device. The various components of the terminal device can be connected through various buses. The baseband processor can also be referred to as a baseband processing circuit or a baseband processing chip. The central processor can also be referred to as a central processing circuit or a central processing chip. The functions of processing a communication protocol and communication data can be built into the processor, or the functions can be stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.

[0598] In the embodiments of the present application, the antenna with a transceiving function and the control circuit can be regarded as a transceiving unit 401 of the terminal device 40, for example, for supporting the terminal device to perform the receiving function and the sending function as described in the Figure 2 The processor with a processing function can be regarded as a processing unit 402 of the terminal device 40. As shown in the Figure 4 terminal device 40 includes the transceiving unit 401 and the processing unit 402. The transceiving unit can also be referred to as a transceiver, a transceiver, a transceiver, etc. Optionally, the devices in the transceiving unit 401 for implementing the receiving function can be regarded as a receiving unit, and the devices in the transceiving unit 401 for implementing the sending function can be regarded as a sending unit, that is, the transceiving unit 401 includes a receiving unit and a sending unit. The receiving unit can also be referred to as a receiver, an input port, a receiving circuit, etc. The sending unit can be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0599] The processor 402 can be used to execute the instructions stored in the memory to control the transceiving unit 401 to receive and / or send signals, and complete the functions of the terminal device in the above method embodiments. As an implementation manner, the functions of the transceiving unit 401 can be implemented by a transceiving circuit or a dedicated chip for transceiving.

[0600] Figure 5 is a structural schematic diagram of a network device provided by the present application, which can be a structural schematic diagram of a base station. As shown in the Figure 5 application, the base station can be applied to, for example, Figure 1In the illustrated system, the functions of the network device in the above method embodiments are performed. The base station 50 can include one or more radio frequency units, such as a remote radio unit (RRU) 501 and one or more baseband units (BBU) (also referred to as a digital unit, DU) 502. The RRU 501 can be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., which can include at least one antenna 5011 and a radio frequency unit 5012. The RRU 501 part is mainly used for the transceiving of radio frequency signals and the conversion between radio frequency signals and baseband signals. The BBU 502 part is mainly used for baseband processing, controlling the base station, etc. The RRU 501 and the BBU 502 can be physically arranged together or physically separated, i.e., a distributed base station.

[0601] The BBU 502 is the control center of the base station, also referred to as a processing unit, mainly used to complete baseband processing functions such as channel coding, multiplexing, modulation, spreading, etc. For example, the BBU (processing unit) 502 can be used to control the base station to perform the operation processes of the network device in the above method embodiments.

[0602] In one example, the BBU 502 can be composed of one or more single boards, and multiple single boards can jointly support a single access indicated wireless access network (such as a 5G network), or can separately support wireless access networks of different access modes (such as an LTE network, a 5G network, or other networks). The BBU 502 further includes a memory 5021 and a processor 5022, and the memory 5021 is used to store necessary instructions and data. For example, the memory 5021 stores the correspondence between the codebook index and the precoding matrix in the above embodiments. The processor 5022 is used to control the base station to perform necessary actions, for example, to control the base station to perform the operation processes of the network device in the above method embodiments. The memory 5021 and the processor 5022 can serve one or more single boards. That is, a memory and a processor can be separately arranged on each single board. Alternatively, multiple single boards can share the same memory and processor. In addition, necessary circuits can also be arranged on each single board.

[0603] Figure 6 A structure diagram of a determination device of quasi co-location information provided in the present application is provided. The apparatus 600 can be used to implement the method described in the above method embodiments, and the above method embodiments can be referred to. The communication apparatus 600 can be a chip, a network device (such as a base station), a terminal device, or other network devices, etc.

[0604] The communication apparatus 600 comprises one or more processors 601. The processor 601 can be a general processor or a special purpose processor, etc. For example, it can be a baseband processor or a central processor. The baseband processor can be used to process communication protocols and communication data, the central processor can be used to control the communication apparatus (e.g., a base station, a terminal, or a chip, etc.), execute software programs, and process data of the software programs. The communication apparatus can comprise a transceiver unit to realize input (reception) and output (transmission) of signals. For example, the communication apparatus can be a chip, and the transceiver unit can be an input and / or output circuit of the chip or a communication interface. The chip can be used in a terminal or a base station or other network equipment. For another example, the communication apparatus can be a terminal or a base station or other network equipment, and the transceiver unit can be a transceiver, a radio frequency chip, etc.

[0605] The communication apparatus 600 comprises one or more processors 601, which can realize the functions of Figure 2 the method of the network equipment or the terminal equipment in the illustrated embodiments.

[0606] In a possible design, the communication apparatus 600 comprises means for generating reference signal indication information, and means for sending the reference signal indication information. The functions of the means for generating reference signal indication information and the means for sending the reference signal indication information can be realized by one or more processors. For example, the reference signal indication information can be generated by one or more processors, and the reference signal indication information can be sent by a transceiver, or an input / output circuit, or an interface of a chip. The reference signal indication information can be referred to the related description in the method embodiments.

[0607] In a possible design, the communication apparatus 600 comprises means for receiving reference signal indication information, and means for sending uplink data according to the reference signal indication information. The reference signal indication information and how to send uplink data according to the reference signal indication information can be referred to the related description in the method embodiments. For example, the reference signal indication information can be received by a transceiver, or an input / output circuit, or an interface of a chip, and the uplink data can be sent by one or more processors according to the reference signal indication information.

[0608] Optionally, the processor 601 can realize other functions in addition to the functions of Figure 2 The method of the illustrated embodiments can also realize other functions.

[0609] Optionally, in one design, the processor 601 can execute instructions to cause the communication apparatus 600 to perform the methods described in the above method embodiments. The instructions can be stored in whole or in part in the processor, such as instructions 603, or in the memory 602 coupled to the processor, such as instructions 604, or by a combination of the instructions 603 and 604 to cause the communication apparatus 600 to perform the methods described in the above method embodiments.

[0610] In yet another possible design, the communication apparatus 600 can also include circuitry that can implement the functions of the network device or the terminal device in the above method embodiments.

[0611] In yet another possible design, the communication apparatus 600 can include one or more memories 602 having instructions 604 stored thereon that are executable by the processor to cause the communication apparatus 600 to perform the methods described in the above method embodiments. Optionally, the memory can also store data. Optionally, the processor can also store instructions and / or data. For example, the one or more memories 602 can store the correspondence described in the above embodiments, or the related parameters or tables involved in the above embodiments, etc. The processor and the memory can be separately arranged, or integrated together.

[0612] In yet another possible design, the communication apparatus 600 can also include a transceiver 605 and an antenna 606. The processor 601 can be referred to as a processing unit, and can control the communication apparatus (terminal or base station). The transceiver 605 can be referred to as a transceiver, a transceiving circuit, or a transceiver, etc., and can be used to implement the transceiving functions of the communication apparatus through the antenna 606.

[0613] The present application also provides a communication system including one or more network devices and one or more terminal devices described above.

[0614] It should be noted that the processor in the embodiments of the present application can be an integrated circuit chip with a signal processing capability. In the implementation process, each step of the method embodiments described above can be completed by the integrated logic circuit or the instruction in the software form of the hardware in the processor. The processor described above can be a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. Each method, step and logic block diagram disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as a hardware code processor for execution, or a combination of hardware and software modules in the code processor for execution. The software module can be located in a random access memory, a flash memory, a read only memory, a programmable read only memory or an electrically erasable programmable memory, a register or other mature storage medium in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and combines the hardware to complete the steps of the above method.

[0615] It can be appreciated that the memory in the embodiments of the present application can be a volatile memory or a nonvolatile memory, or can include both volatile and nonvolatile memory. Among them, the nonvolatile memory can be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a Random Access Memory (RAM) used as an external cache. By way of example, and not limitation, many forms of RAM can be used, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous Dynamic RAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the system and method described herein is intended to include, but not be limited to, these and any other suitable types of memory.

[0616] The embodiments of the present application also provide a computer readable medium, which has stored thereon a computer program, and the computer program is executed by a computer to implement the communication method described in any of the method embodiments.

[0617] The embodiments of the present application also provide a computer program product, which is executed by a computer to implement the communication method described in any of the method embodiments.

[0618] In the embodiments described above, the implementation can be wholly or partially by software, hardware, firmware or any combination thereof. When implemented by software, the implementation can be wholly or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are wholly or partially generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another, for example, the computer instructions can be transferred from one website, computer, server or data center to another website, computer, server or data center through a wired (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes one or more available media sets. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (Digital Video Disc, DVD)), or a semiconductor medium (for example, a solid state disk (Solid State Disk, SSD)) and the like.

[0619] The embodiments of the present application also provide a processing device, including a processor and an interface; the processor is used to execute the communication method described in any of the method embodiments.

[0620] It should be understood that the above processing device can be a chip, and the processor can be implemented by hardware or software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc. When implemented by software, the processor can be a general-purpose processor, which is implemented by reading software codes stored in a memory. The memory can be integrated in the processor or located outside the processor and exist independently.

[0621] It should be understood that every feature and combination of features that is described above in relation to one embodiment is applicable to at least one other embodiment, unless specifically stated otherwise. It should also be understood that every embodiment described above can be combined with any other embodiment unless specifically stated otherwise.

[0622] In addition, the terms "system" and "network" are often used interchangeably herein. The term "and / or" used herein, merely means one or all, that is, A and / or B means A alone, A and B, B alone. In addition, the character " / " used herein generally means a "or" relationship between the front and rear associated objects. In the present application, "at least one" means one or more, and "multiple" means two or more. "At least one of the following" or the like means any combination of these items, including any combination of single item or multiple items. For example, at least one of a, b, or c can mean a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, and c can be single or multiple.

[0623] It should be understood that in the embodiments of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that the determination of B according to A does not mean that B is determined only according to A, but B can also be determined according to A and / or other information.

[0624] Those skilled in the art can clearly understand that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be realized by electronic hardware, computer software or a combination of both. In order to clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been described in the above description. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0625] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0626] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other manners. For example, the division of the above-described device embodiments is only a logical function division, and there can be another division manner for actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed coupling or direct coupling or communication connection between the units can be indirect coupling or communication connection through some interfaces, devices or units, and can also be electrical, mechanical or other forms of connection.

[0627] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, can be located in one place, or can be distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0628] In addition, each functional unit in the various embodiments of the present application can be integrated into a processing unit, or each unit can exist physically, or two or more units can be integrated into one unit. The integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0629] Those skilled in the art can clearly understand that the present application can be implemented by a hardware only or a combination of hardware and software, and, when software is implemented, the above-mentioned functions can be stored in or transmitted by a computer readable medium in the form of one or more instructions or codes. The computer readable medium includes computer storage medium and communication medium, and the communication medium includes any medium that can be used to carry desired program code from one place to another. The storage medium can be any available medium that can be accessed by a computer. For example, but not limited to, the computer readable medium can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage medium or other magnetic storage devices, or any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and can be accessed by a computer. In addition, any connection can be properly called a computer readable medium. For example, if the software is transmitted from a website, server or other remote source using a coaxial cable, optical fiber cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwave, then the coaxial cable, optical fiber cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwave are included in the definition of the medium. As used herein, disk (disk) and disc (disc) include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, wherein disk usually magnetically replicates data, and disc optically replicates data with laser. The above combinations should also be included in the scope of the computer readable medium.

[0630] In conclusion, the above only describes the preferred embodiments of the technical scheme of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A communication method characterized by comprising: The method is performed by a terminal device or a chip for the terminal device, and includes: In a case where a receiving time interval of a data channel and a control channel where downlink control information (DCI) corresponding to the data channel is located is less than a threshold value, the DCI corresponding to the data channel is used to indicate scheduling information of the data channel, and spatial quasi co-location (QCL) parameter is included in QCL configuration information of the terminal device, or in a case where QCL type D is included, two pieces of QCL information of antenna ports of the data channel are determined according to quasi co-location information indicating transmission of the antenna ports of the control channel included in two control resource set (CORESET) respectively. The two CORESETs correspond to different transmission configuration indication (TCI) states respectively, each TCI state is associated with a reference signal set (RS set), and the RS set includes at least one reference signal and corresponding QCL type.

2. The method of claim 1, wherein, The two CORESETs are two of a plurality of CORESETs.

3. The method of claim 2, wherein, The two CORESETs are determined from the plurality of CORESETs based on CORESET identification.

4. The method according to any one of claims 1 to 3, characterized in that, The two CORESETs correspond to received DCI of a latest time slot.

5. The method of any one of claims 1-3, wherein, The terminal device supports at least two pieces of indication information used to indicate QCL information of antenna ports of a reference signal.

6. The method of any one of claims 1-3, wherein, There is a specific field in the DCI, or a value of the specific field.

7. The method of any one of claims 1-3, wherein, The antenna ports of the control channel are antenna ports of a reference signal of the control channel, and / or the antenna ports of the data channel are antenna ports of a reference signal of the data channel.

8. The method of claim 7, wherein, The reference signal of the control channel is a demodulation reference signal (DMRS), and / or the reference signal of the data channel is a demodulation reference signal (DMRS).

9. A communication method characterized by comprising: The method is performed by a terminal device or a chip for the terminal device, and includes: In a case where a receiving time interval of a data channel and a control channel where downlink control information (DCI) corresponding to the data channel is located is less than a threshold value, the DCI corresponding to the data channel is used to indicate scheduling information of the data channel, and spatial quasi co-location (QCL) parameter is included in QCL configuration information of the terminal device, or in a case where QCL type D is included, two pieces of QCL information of antenna ports of the data channel are determined according to a set of indication information configured by high-layer signaling, wherein the high-layer signaling includes radio resource control (RRC) signaling or medium access control (MAC) signaling. The indication information in the set of indication information satisfies the following rule: An indication information indicating two reference signal sets (RS sets) is identified as the smallest indication information.

10. The method of claim 9, wherein, The indication information in the set of indication information is a transmission configuration indication (TCI) state.

11. The method of any one of claims 9-10, wherein, The antenna ports of the control channel are antenna ports of a reference signal of the control channel, and / or the antenna ports of the data channel are antenna ports of a reference signal of the data channel.

12. The method of claim 11, wherein, The reference signal of the control channel is a demodulation reference signal (DMRS), and / or the reference signal of the data channel is a demodulation reference signal (DMRS).

13. A method of communication, comprising: The method is performed by a network device or a chip for the network device, and includes: sending, to a terminal device, downlink control information (DCI) corresponding to a data channel, the DCI being used to indicate scheduling information of the data channel; sending, to the terminal device, quasi co-location (QCL) configuration information, wherein the QCL configuration information includes spatial QCL parameters or QCL type D; sending, to the terminal device, two sets of control channel resource sets (CORESETs), each of the two sets of CORESETs including quasi co-location information used to indicate an antenna port used to transmit a control channel, and the quasi co-location information included in the two sets of CORESETs being used to determine two pieces of quasi co-location information of an antenna port of the data channel, wherein a time interval for receiving the data channel and a control channel where the DCI is located is less than a threshold value; wherein the two sets of CORESETs correspond to different transmission configuration indication (TCI) states respectively, each TCI state is associated with a reference signal set (RS set), and the RS set includes at least one reference signal and corresponding QCL type.

14. The method of claim 13, wherein, The two CORESETs are two of a plurality of CORESETs.

15. The method of claim 14, wherein, The two CORESETs correspond to CORESET identifiers sent to the terminal device.

16. The method of any one of claims 13-15, wherein, The two CORESETs correspond to DCI sent in a latest time slot.

17. The method of any one of claims 13-15, wherein, The terminal device supports at least two pieces of indication information used to indicate QCL information of an antenna port of a reference signal.

18. The method of any one of claims 13-15, wherein, There is a specific field in the DCI, or a value of the specific field.

19. The method of any one of claims 13-15, wherein, The antenna port of the control channel is an antenna port of a reference signal of the control channel, and / or the antenna port of the data channel is an antenna port of a reference signal of the data channel.

20. The method of claim 19, wherein, The reference signal of the control channel is a demodulation reference signal (DMRS), and / or the reference signal of the data channel is a DMRS.

21. A method of communication, comprising: The method is performed by a network device or a chip for the network device, and includes: sending, to a terminal device, downlink control information (DCI) corresponding to a data channel, the DCI being used to indicate scheduling information of the data channel; sending, to the terminal device, quasi co-location (QCL) configuration information, wherein the QCL configuration information includes spatial QCL parameters or QCL type D; sending, to the terminal device, high-layer signaling, the high-layer signaling being configured to indicate a set of indication information used by the terminal device to determine two pieces of QCL information of an antenna port of the data channel according to the high-layer signaling, wherein a time interval for receiving the data channel and a control channel where the DCI is located is less than a threshold value, and wherein the high-layer signaling includes radio resource control (RRC) signaling or medium access control (MAC) signaling; the indication information in the set of indication information satisfies the following rule: The indication information is associated with two RS sets.

22. The method of claim 21, wherein, The indication information in the indication information set is a transmission configuration indication (TCI) state.

23. The method of any one of claims 21-22, wherein, The antenna port of the control channel is an antenna port of a reference signal of the control channel, and / or the antenna port of the data channel is an antenna port of a reference signal of the data channel.

24. The method of claim 23, wherein, The reference signal of the control channel is a demodulation reference signal (DMRS), and / or the reference signal of the data channel is a demodulation reference signal (DMRS).

25. A communications device, characterized by comprising means for performing the method of any of claims 1-24.

26. A communications device, characterized by comprising: a processor coupled with a memory; a memory for storing a computer program; a processor for executing the computer program stored in the memory to cause the apparatus to perform the method of any of claims 1-24.

27. A computer readable storage medium, characterized in that, instructions that, when executed on a computer, cause the method of any of claims 1-24 to be performed.

28. A computer program product comprising a computer program that, when executed by a processor, implements the method of any of claims 1-24.

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