Communication method and related apparatus

Abstract

Embodiments of the present application provide a communication method. In the method, after receiving a plurality of first reference signals, a terminal device can determine a third measurement value corresponding to the latest third reference signal among the plurality of first reference signals and a fourth measurement value of a second reference signal, the third measurement value and the fourth measurement value being used for determining whether an event instance is satisfied. That is, by defining "the latest signal", a plurality of determinations of event instances caused by a plurality of measurement values of a plurality of reference signals in the prior art can be reduced, thereby reducing false triggering of events.

Description

Communication method and related apparatus

[0001] The present application claims priority to the Chinese Patent Application No. 202411098001.4, filed on August 9, 2024, and entitled "A communication method and related apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, and in particular to a communication method and related apparatus. BACKGROUND

[0003] With the frequency band of wireless communication system being higher and higher, the transmission path loss of high frequency is increased, and beam forming technology is needed to form beams pointing to different directions, so as to improve the coverage performance. In the existing beam management process, the network device obtains the quality of different beams by configuring the measurement and reporting of reference signals. If the network device wants to know the beam-related information of the terminal device more frequently, the terminal device can be configured with periodic reference signals / reporting, but the cost is to occupy a large amount of uplink resources. If the network device wants to save uplink resources, the terminal device can be configured with aperiodic reference signals / reporting, and when needed, the terminal device is triggered to report, but the network device may not be able to timely discover the change of beam quality.

[0004] Therefore, a process of triggering beam reporting by the terminal device is currently discussed. Specifically, the terminal device measures the reference signal, and when some defined events are met, the terminal device triggers reporting. The current standard introduces the following conditions for meeting events: the quality of the current "new beam" is better than that of the "current beam" and exceeds the threshold.

[0005] However, when there are multiple measurement results of the new beam or the current beam, it will cause the number of times of judging that the events are met to be too much, thereby causing the terminal device to frequently report. SUMMARY

[0006] The present application provides a communication method and related apparatus, in the case of multiple first reference signals, a third measurement value used for determining whether an instance of an event meets can be determined. That is, by determining the third measurement value of the instance of the event from the multiple measurement values corresponding to the multiple first reference signals, the multiple times of judging the instance of the event caused by too many measurement values of the multiple first reference signals can be reduced, and the false triggering of the event or the frequent reporting of the terminal device can be reduced.

[0007] The first aspect of the present application provides a communication method, which is executed by a terminal device, or executed by part components (such as processors, chips or chip systems, etc.) in the terminal device, or can also be implemented by a logic module or software which can realize all or part of the functions of the terminal device. In the first aspect and its possible implementation manners, the method is taken as an example executed by the terminal device. The terminal device first receives a plurality of first reference signals and at least one second reference signal. Then, a third reference signal and a fourth reference signal are determined. Further, a third measurement value and a fourth measurement value used for determining whether an instance of an event meets the requirements are determined.

[0008] Among them, the third reference signal is the latest reference signal in the plurality of first reference signals, and the fourth reference signal belongs to the at least one second reference signal. The third measurement value includes a measurement value corresponding to the third reference signal, and the fourth measurement value includes a measurement value corresponding to the fourth reference signal.

[0009] It should be noted that "latest" can also be understood as the latest, the latest in time domain, the latest in time domain, not used for judging the instance of the event, etc. which will be described later in the description, and will not be expanded here.

[0010] Based on the above scheme, after the terminal device receives a plurality of first reference signals, the third measurement value corresponding to the latest third reference signal in the plurality of first reference signals and the fourth measurement value of the second reference signal can be determined, which are used for determining whether an instance of an event meets the requirements. That is, through the limitation of "latest", the multiple determinations of the instance of the event caused by the multiple measurement values of the multiple reference signals in the prior art can be reduced, and the false triggering of the event can be reduced.

[0011] Optionally, in a possible implementation manner of the first aspect, the transmission period of the plurality of first reference signals is different from the transmission period of the at least one second reference signal.

[0012] In this possible implementation manner, the scheme provided by the present application can determine the measurement value used for determining whether an instance of an event meets the requirements under the condition that the transmission periods of the two types of reference signals are different, so that the multiple determinations of the instance of the event caused by the multiple measurement values of the multiple reference signals in the prior art can be reduced, and the false triggering of the event can be reduced.

[0013] Optionally, in a possible implementation manner of the first aspect, the number of the at least one second reference signal is a plurality, and the fourth measurement value is a measurement value corresponding to the latest second reference signal in the plurality of second reference signals.

[0014] In the possible implementation, the third measurement value is a measurement value of a latest first reference signal in the plurality of first reference signals, and the fourth measurement value is a measurement value of a latest second reference signal in the plurality of second reference signals. By using the latest measurement value of the two types of reference signals, the number of times of determining an event instance is reduced due to the plurality of measurement values of one type of reference signal, and the false triggering of the event is reduced.

[0015] Optionally, in the possible implementation of the first aspect, the third measurement value and the fourth measurement value are used only for determining whether the event instance satisfies.

[0016] In the possible implementation, by using the measurement value only for determining the event instance once, the false triggering of the event due to the plurality of event instances determined by one measurement value in the prior art is reduced.

[0017] Optionally, in the possible implementation of the first aspect, the plurality of comparisons of the third measurement value are regarded as one event instance, or the plurality of comparisons of the fourth measurement value are regarded as one event instance.

[0018] In the possible implementation, the plurality of comparisons of the measurement value are regarded as one event instance, so that the plurality of event instances are not determined due to the plurality of comparisons of the measurement value, and the false triggering of the event due to the plurality of event instances is reduced.

[0019] Optionally, in the possible implementation of the first aspect, the evaluation period of the event is a larger transmission period of a first transmission period of the plurality of first reference signals and a second transmission period of the at least one second reference signal.

[0020] In the possible implementation, by using the larger transmission period of the two types of reference signals as the evaluation period of the event, the number of times of evaluating the event is reduced due to the smaller transmission period of one type of reference signal, and the energy consumption of the terminal device in evaluating the event is reduced.

[0021] Optionally, in the possible implementation of the first aspect, the number of times of satisfying the event instance in the evaluation period is less than or equal to 1.

[0022] In the possible implementation, by limiting the number of times of satisfying the event instance in one evaluation period to be less than or equal to 1, the process of determining the plurality of event instances in one evaluation period is reduced, and the plurality of event instances determined by repeatedly using the measurement value are reduced.

[0023] Optionally, in a possible implementation manner of the first aspect, the second transmission period of the at least one second reference signal is greater than the first transmission period of the plurality of first reference signals, and the second transmission period is used as a measurement period of the plurality of first reference signals.

[0024] In this possible implementation manner, by using the transmission period of the reference signal with the greater transmission period as the measurement period of the reference signal with the smaller transmission period, frequent measurement of the reference signal with the smaller transmission period is reduced, and the measurement energy consumption of the terminal device is reduced, and frequent reporting of the measurement value of the reference signal of a certain type caused by more measurement values of the reference signal of the certain type in the subsequent event instance judgment is facilitated.

[0025] Optionally, in a possible implementation manner of the first aspect, the terminal device further receives a plurality of fifth reference signals, the plurality of fifth reference signals have a third transmission period, the third measurement value includes measurement values of the fourth reference signal and the plurality of fifth reference signals, the evaluation period of the event or the measurement period of the measurement value is a greater transmission period of a fourth transmission period and the second transmission period, the fourth transmission period includes any one of the following: a greatest transmission period of the first transmission period and the third transmission period, a smallest transmission period of the first transmission period and the third transmission period, an average period of the first transmission period and the third transmission period.

[0026] In this possible implementation manner, in the case that there are multiple types of reference signals, the transmission periods of the reference signals of the same type are compared first, and then the comparison result of the reference signals of the same type is compared with the transmission period of the reference signal of another type, so that the evaluation period of the event or the measurement period of each reference signal is determined. For example, the greater one of the fourth transmission period obtained by comparing the reference signals of the same type and the second transmission period of the reference signal of another type is used as the evaluation period of the event or the measurement period of the reference signal with the smaller transmission period. The frequent measurement and frequent evaluation of the reference signal with the smaller transmission period are reduced.

[0027] Optionally, in a possible implementation manner of the first aspect, the terminal device further receives a plurality of sixth reference signals, the plurality of sixth reference signals have a fifth transmission period, the fourth measurement value includes measurement values of the fourth reference signal and the plurality of sixth reference signals, the evaluation period of the event or the measurement period of the measurement value is a greater transmission period of a sixth transmission period and the first transmission period; the sixth transmission period includes any one of the following: a greatest transmission period of the second transmission period and the fifth transmission period, a smallest transmission period of the second transmission period and the fifth transmission period, an average period of the second transmission period and the fifth transmission period.

[0028] In the possible implementation manner, when there are multiple cases of a certain type of reference signal, the same type of reference signals can be compared in terms of transmission period first, and then the comparison result of the same type of reference signals and the transmission period of another type of reference signal are compared, so as to determine the evaluation period of the event or the measurement period of each reference signal. For example, the sixth transmission period obtained after comparison of the same type of reference signals and the first transmission period of another type of reference signal are taken as the evaluation period of the event or the measurement period of the reference signal with smaller transmission period. The frequent measurement and frequent evaluation of the reference signal with smaller transmission period can be reduced.

[0029] Optionally, in a possible implementation manner of the first aspect, the third reference signal corresponding to the third measurement value and the fourth reference signal corresponding to the fourth measurement value have a time domain symbol interval less than a preset interval. For example, the time domain interval can be the closest.

[0030] In the possible implementation manner, by limiting the time domain interval between the two measurement values used to determine the instance of the event, a more ideal measurement value can be determined, and the accuracy and timeliness of subsequent instance determination can be improved.

[0031] Optionally, in a possible implementation manner of the first aspect, the at least one second reference signal is a reference signal configured by the network device, and the plurality of first reference signals include at least one of the following: a reference signal associated with an activated transmission configuration indicator (TCI) of a physical downlink channel, a quasi co-located (QCL) source reference signal of the activated TCI of the physical downlink channel, an SSB having a QCL relationship with the activated TCI of the physical downlink channel, a reference signal associated with a beam / TCI currently used by the terminal device, and the like. The physical downlink channel can include at least one of the following: a physical downlink shared channel (PDSCH), a physical downlink control channel (PDCCH), and the like. Alternatively,

[0032] The plurality of first reference signals are reference signals configured by the network device, and the at least one second reference signal includes at least one of the following: a reference signal associated with an activated TCI of a physical downlink channel, a QCL source reference signal of the activated TCI of the physical downlink channel, an SSB having a QCL relationship with the activated TCI of the physical downlink channel, and a reference signal associated with a beam / TCI currently used by the terminal device.

[0033] In the possible implementation, the second reference signal can be understood as a new beam, and the first reference signal can be understood as a current beam. Alternatively, the first reference signal can be understood as a new beam, and the second reference signal can be understood as a current beam. That is, the scheme provided in the present application can be applied not only to a scenario of multiple new beams, but also to a scenario of multiple current beams.

[0034] Optionally, in a possible implementation of the first aspect, the terminal device reports the measurement report when the instance is met.

[0035] In the possible implementation, the terminal device reports the measurement report when the instance is met. Thus, the network device can switch to a beam with better performance according to the measurement report, thereby improving the data transmission performance.

[0036] Optionally, in a possible implementation of the first aspect, the terminal device can further receive first information, where the first information is used to indicate a larger transmission period of a first transmission period of the first reference signal and a transmission period of the at least one second reference signal as a measurement period of the measurement value and / or an evaluation period of the event.

[0037] In the possible implementation, the terminal device can determine the measurement period and / or the evaluation period of the event through the first information, and use the larger transmission period of the two types of reference signals as the measurement period or the evaluation period, thereby reducing the measurement energy consumption of the terminal device or the false triggering of the event caused by too many measurement values.

[0038] Optionally, in a possible implementation of the first aspect, the number of the at least one second reference signal is less than the number of the at least one first reference signal, and the number of the fourth measurement values is multiple. The filtered values of the multiple fourth measurement values and the third measurement value are used to determine whether the instance of the event is met.

[0039] In the possible implementation, when the number of a type of reference signal is large, the terminal device can further use the filtering manner to reduce the multiple determinations of the instance of the event, thereby reducing the false triggering probability of the event.

[0040] Optionally, in a possible implementation of the first aspect, the terminal device can further receive second information, where the second information is used to indicate that the filtered values of the multiple fourth measurement values and the third measurement value are used to determine whether the instance of the event is met.

[0041] In the possible implementation manner, the terminal device can determine whether to determine the measurement value in the filtering manner by receiving the second information, and the event instance is determined multiple times by using the filtering manner, so that the false triggering probability of the event is reduced.

[0042] Optionally, in a possible implementation manner of the first aspect, the determination condition that the event satisfies includes at least one of the following: a difference between the measurement value of the third reference signal and the measurement value of the fourth reference signal is greater than or equal to a first threshold value, and a first number is greater than or equal to a second threshold value; the first number is a number of times that the difference between the measurement value of the third reference signal and the measurement value of the fourth reference signal is greater than or equal to a third threshold value.

[0043] In the possible implementation manner, the determination condition that the event satisfies is provided in multiple manners, and the terminal device can select a corresponding determination manner according to actual needs or the network device, so that the flexibility of event determination is improved.

[0044] The second aspect of the present application provides a communication method, which is executed by a network device, or the method is executed by part of components (for example, a processor, a chip or a chip system, etc.) in the network device, or the method can also be implemented by a logic module or software that can implement all or part of the network device functions. In the second aspect and its possible implementation manners, the method is executed by the network device as an example. The network device transmits a plurality of first reference signals and at least one second reference signal; and receives a measurement report.

[0045] The plurality of first reference signals are used to determine a third reference signal, and the at least one second reference signal is used to determine a fourth reference signal. The third reference signal is the latest reference signal in the plurality of first reference signals, and the fourth reference signal belongs to the at least one second reference signal. The measurement report is determined based on a third measurement value and a fourth measurement value. The third measurement value is a measurement value corresponding to the third reference signal, and the fourth measurement value includes a measurement value corresponding to the fourth reference signal.

[0046] In the possible implementation manner, the third measurement value corresponding to the third reference signal that is the latest in the plurality of first reference signals transmitted by the network device and the fourth measurement value of the second reference signal are used to determine whether the event instance satisfies. That is, by limiting the "latest", the event instance is determined multiple times due to the plurality of measurement values of the plurality of reference signals in the prior art, and the false triggering of the event is reduced.

[0047] Optionally, in a possible implementation manner of the second aspect, a transmission period of the plurality of first reference signals is different from a transmission period of the at least one second reference signal.

[0048] In the possible implementation manner, the scheme provided by the present application can determine the measurement value used for judging whether the event instance meets the condition in the case that the transmission periods of the two types of reference signals are different, so that the multiple times of judging the event instance caused by the multiple measurement values of the multiple reference signals in the prior art can be reduced, and the false triggering of the event can be reduced.

[0049] Optionally, in a possible implementation manner of the second aspect, the at least one second reference signal is multiple, and the fourth measurement value is a measurement value corresponding to a latest second reference signal in the multiple second reference signals.

[0050] In the possible implementation manner, the third measurement value is a measurement value of a latest first reference signal in the multiple first reference signals, and the fourth measurement value is a measurement value of a latest second reference signal in the multiple second reference signals. By limiting the measurement values of the two types of reference signals to be the latest measurement values, the multiple times of judging the event instance caused by the multiple measurement values of the one type of reference signals in the prior art can be reduced, and the false triggering of the event can be reduced.

[0051] Optionally, in a possible implementation manner of the second aspect, the third measurement value and the fourth measurement value are used only for judging whether one instance of the event meets the condition.

[0052] In the possible implementation manner, by limiting the measurement values to be used only for one instance of the event, the multiple instances of the event caused by one measurement value in the prior art can be reduced, and the false triggering of the event caused by the multiple instances can be reduced.

[0053] Optionally, in a possible implementation manner of the second aspect, the multiple comparisons of the third measurement value are regarded as one instance of the event, or the multiple comparisons of the fourth measurement value are regarded as one instance of the event.

[0054] In the possible implementation manner, the multiple comparisons of the measurement value are regarded as one instance, so that the multiple instances of the event caused by the multiple comparisons of the measurement value can be avoided, and the false triggering of the event caused by the multiple instances can be reduced.

[0055] Optionally, in a possible implementation manner of the second aspect, the evaluation period of the event is a larger transmission period of the first transmission period of the multiple first reference signals and the second transmission period of the at least one second reference signal.

[0056] In the possible implementation manner, by limiting the evaluation period of the event to be the larger transmission period of the transmission periods of the two types of reference signals, the excessive times of evaluating the event caused by the smaller transmission period of the one type of reference signals can be reduced, and the energy consumption of the terminal device in evaluating the event can be reduced.

[0057] Optionally, in a possible implementation of the second aspect, the number of times that the instance of the event in the evaluation period satisfies the condition is less than or equal to 1.

[0058] In this possible implementation, by limiting the number of times that the instance of the event in the evaluation period satisfies the condition to be less than or equal to 1, the process of determining multiple instances in one evaluation period is reduced, and the repeated measurement value determination of multiple instances is also reduced.

[0059] Optionally, in a possible implementation of the second aspect, the second transmission period of the at least one second reference signal is greater than the first transmission period of the multiple first reference signals, and the second transmission period is used as the measurement period of the multiple first reference signals.

[0060] In this possible implementation, by using the transmission period of the reference signal with the longer transmission period as the measurement period of the reference signal with the shorter transmission period, the frequent measurement of the reference signal with the shorter transmission period is reduced, which not only reduces the measurement energy consumption of the terminal device, but also facilitates the frequent reporting caused by the more measurement values of the reference signal in the subsequent determination of the instance of the event.

[0061] Optionally, in a possible implementation of the second aspect, the network device can further send multiple fifth reference signals, the period of the multiple fifth reference signals is a third transmission period, the third measurement value corresponds to the multiple fifth reference signals and the multiple first reference signals, and the evaluation period of the event is the larger one of the fourth transmission period and the second transmission period.

[0062] The fourth transmission period includes any one of the following: the largest transmission period of the first transmission period and the third transmission period, the smallest transmission period of the first transmission period and the third transmission period, and the average period of the first transmission period and the third transmission period.

[0063] In this possible implementation, when there are multiple types of reference signals, the transmission periods of the reference signals of the same type are compared first, and then the comparison result of the reference signals of the same type is compared with the transmission period of the reference signal of another type, so as to determine the evaluation period of the event or the measurement period of each reference signal. For example, the larger one of the fourth transmission period obtained by comparing the reference signals of the same type and the second transmission period of the reference signal of another type is used as the evaluation period of the event or the measurement period of the reference signal with the shorter transmission period. The frequent measurement and frequent evaluation of the reference signal with the shorter transmission period can be reduced.

[0064] Optionally, in a possible implementation of the second aspect, the network device can further transmit a plurality of sixth reference signals, a period of the plurality of sixth reference signals is a fifth transmission period, the fourth measurement value comprises a measurement value corresponding to the fourth reference signal and a measurement value corresponding to the plurality of sixth reference signals, and the evaluation period of the event or the measurement period of the measurement value is a larger transmission period of the sixth transmission period and the first transmission period.

[0065] The sixth transmission period comprises any one of the following: a largest transmission period of the second transmission period and the fifth transmission period, a smallest transmission period of the second transmission period and the fifth transmission period, and an average period of the second transmission period and the fifth transmission period.

[0066] In this possible implementation, when there are multiple cases of a certain type of reference signal, the transmission periods of the same type of reference signals can be compared first, and then the comparison result of the same type of reference signals and the transmission period of another type of reference signal are compared, so as to determine the evaluation period of the event or the measurement period of each reference signal. For example, the larger one of the sixth transmission period obtained by comparing the same type of reference signals and the first transmission period of another type of reference signal can be taken as the evaluation period of the event or the measurement period of the reference signal with a smaller transmission period. The frequent measurement and frequent evaluation of the reference signal with a smaller transmission period can be reduced.

[0067] Optionally, in a possible implementation of the second aspect, a time domain symbol interval between the third reference signal corresponding to the third measurement value and the fourth reference signal corresponding to the fourth measurement value is less than a preset interval.

[0068] In this possible implementation, by limiting the time domain interval between the two measurement values used to determine the instance of the event, a more ideal measurement value can be determined, and the accuracy and timeliness of subsequent instance determination can be improved.

[0069] Optionally, in a possible implementation of the second aspect, the plurality of second reference signals are reference signals configured by the network device, and the first reference signal comprises at least one of the following: a reference signal associated with an activated transmission configuration indication (TCI) of a physical downlink channel, a quasi co-location (QCL) source reference signal of an activated TCI of the physical downlink channel, a synchronization signal and physical broadcast channel block (SSB) having a QCL relationship with the activated TCI of the physical downlink channel, and a reference signal associated with a beam / TCI currently used by the terminal device; or

[0070] The plurality of first reference signals are reference signals configured by the network device, and the second reference signal comprises at least one of the following: a reference signal having a QCL relationship with the activated TCI of the physical downlink channel, and a reference signal associated with the beam / TCI currently used by the terminal device.

[0071] In the possible implementation, the second reference signal can be understood as a new beam, and the first reference signal can be understood as a current beam. Alternatively, the first reference signal can be understood as a new beam, and the second reference signal can be understood as a current beam. That is, the scheme provided in the present application can be applied not only to a scenario of multiple new beams, but also to a scenario of multiple current beams.

[0072] Optionally, in a possible implementation of the second aspect, the network device can further send first information, where the first information is used to indicate a larger one of a first transmission period of the first reference signal and a transmission period of the at least one second reference signal as a measurement period of the measurement value and / or an evaluation period of the event.

[0073] In the possible implementation, the network device can indicate, by using the first information, a larger one of a first transmission period of the first reference signal and a transmission period of the at least one second reference signal as a measurement period of the measurement value and / or an evaluation period of the event.

[0074] Optionally, in a possible implementation of the second aspect, the number of the at least one second reference signal is less than the number of the at least one first reference signal, and the number of the fourth measurement values is multiple. The filtered values of the multiple fourth measurement values and the third measurement value are used to determine whether the one instance of the event meets the condition.

[0075] In the possible implementation, in the case where the number of a certain type of reference signal is large, the terminal device can further use filtering to reduce multiple determinations of the instance of the event, thereby reducing the false triggering probability of the event.

[0076] Optionally, in a possible implementation of the second aspect, the network device can further send second information, where the second information is used to indicate that the filtered values of the multiple fourth measurement values and the third measurement value are used to determine whether the one instance of the event meets the condition.

[0077] In the possible implementation, the network device can indicate, by using the second information, whether the terminal device uses filtering to determine the measurement value, and uses filtering to reduce multiple determinations of the instance of the event, thereby reducing the false triggering probability of the event.

[0078] Optionally, in a possible implementation of the second aspect, the determination condition of the event meeting includes at least one of the following: a difference between the measurement value of the third reference signal and the measurement value of the fourth reference signal is greater than or equal to a first threshold value, and a first number is greater than or equal to a second threshold value; the first number is a number of times that the difference between the measurement value of the third reference signal and the measurement value of the fourth reference signal is greater than or equal to a third threshold value.

[0079] In this possible implementation manner, multiple manners of providing the judging condition for which the event is satisfied are provided, and the terminal device can select a corresponding judging manner according to actual needs or the network device, thereby improving the flexibility of event judging.

[0080] Optionally, in a possible implementation manner of the second aspect, the network device can further switch the beam based on the measurement report.

[0081] In this possible implementation manner, the network device can switch to a beam with better performance according to the measurement report, thereby improving the data transmission performance.

[0082] The third aspect of the present application provides a communication apparatus, which is a terminal device, or the communication apparatus is part of the terminal device (for example, a processor, a chip or a chip system, etc.), or the communication apparatus is a logic module or software capable of realizing all or part of the terminal device functions. The communication apparatus includes a transceiver unit and a processing unit.

[0083] The transceiver unit is configured to receive a plurality of first reference signals and at least one second reference signal.

[0084] The processing unit is configured to determine a third reference signal and a fourth reference signal.

[0085] The processing unit is further configured to determine the third measurement value and the fourth measurement value used for judging whether an instance of the event is satisfied.

[0086] The third reference signal is the latest reference signal in the plurality of first reference signals, and the fourth reference signal belongs to the at least one second reference signal. The third measurement value includes a measurement value corresponding to the third reference signal, and the fourth measurement value includes a measurement value corresponding to the fourth reference signal.

[0087] Optionally, in a possible implementation manner of the third aspect, the transmission period of the plurality of first reference signals is different from the transmission period of the at least one second reference signal.

[0088] Optionally, in a possible implementation manner of the third aspect, the number of the at least one second reference signal is multiple, and the fourth measurement value is a measurement value corresponding to the latest second reference signal in the plurality of second reference signals.

[0089] Optionally, in a possible implementation manner of the third aspect, the third measurement value and the fourth measurement value are only used for judging whether an instance of the event is satisfied.

[0090] Optionally, in a possible implementation manner of the third aspect, multiple comparisons of the third measurement value are regarded as an instance of the event, or multiple comparisons of the fourth measurement value are regarded as an instance of the event.

[0091] Optionally, in a possible implementation manner of the third aspect, the evaluation period of the event is a larger transmission period between the first transmission period of the first reference signals and the second transmission period of the at least one second reference signal.

[0092] Optionally, in a possible implementation manner of the third aspect, the number of times that one instance of the event in the evaluation period satisfies the condition is less than or equal to 1.

[0093] Optionally, in a possible implementation manner of the third aspect, the second transmission period of the at least one second reference signal is greater than the first transmission period of the first reference signals, and the second transmission period is used as a measurement period of the first reference signals.

[0094] Optionally, in a possible implementation manner of the third aspect, the transceiver is further configured to receive a plurality of fifth reference signals, a period of the plurality of fifth reference signals is a third transmission period, the third measurement value includes a measurement value corresponding to the third reference signal and a measurement value of the plurality of fifth reference signals, and an evaluation period of the event or a measurement period of the measurement value is a larger transmission period between a fourth transmission period and the second transmission period, the fourth transmission period includes any one of: a largest transmission period between the first transmission period and the third transmission period, a smallest transmission period between the first transmission period and the third transmission period, and an average period of the first transmission period and the third transmission period.

[0095] Optionally, in a possible implementation manner of the third aspect, the transceiver is further configured to receive a plurality of sixth reference signals, a period of the plurality of sixth reference signals is a fifth transmission period, a fourth measurement value includes a measurement value corresponding to the fourth reference signal and a measurement value corresponding to the plurality of sixth reference signals, and an evaluation period of the event or a measurement period of the measurement value is a larger transmission period between a sixth transmission period and the first transmission period, the sixth transmission period includes any one of: a largest transmission period between the second transmission period and the fifth transmission period, a smallest transmission period between the second transmission period and the fifth transmission period, and an average period of the second transmission period and the fifth transmission period.

[0096] Optionally, in a possible implementation manner of the third aspect, a time domain symbol interval between the third reference signal corresponding to the third measurement value and the fourth reference signal corresponding to the fourth measurement value is less than a preset interval. For example, the time domain interval can be the closest.

[0097] Optionally, in a possible implementation manner of the third aspect, the at least one second reference signal is a reference signal configured by the network device, and the plurality of first reference signals include at least one of: a reference signal associated with an active transmission configuration indication (TCI) of a physical downlink channel, a quasi co-location (QCL) source reference signal of the active TCI of the physical downlink channel, a synchronization signal and physical broadcast channel block (SSB) having a QCL relationship with the active TCI of the physical downlink channel, and a reference signal associated with a beam / TCI currently used by the terminal device.

[0098] The plurality of first reference signals are reference signals configured by the network device, and the at least one second reference signal includes at least one of: a reference signal associated with an active TCI of a physical downlink channel, a QCL source reference signal of the active TCI of the physical downlink channel, an SSB having a QCL relationship with the active TCI of the physical downlink channel, and a reference signal associated with a beam / TCI currently used by the terminal device.

[0099] Optionally, in a possible implementation manner of the third aspect, the transceiver is further configured to report the measurement report when the instance is met, and the measurement report is used for switching a beam.

[0100] Optionally, in a possible implementation manner of the third aspect, the transceiver is further configured to receive first information, and the first information is used for indicating a larger transmission period of a first transmission period of the first reference signal and a transmission period of the at least one second reference signal as a measurement period of a measurement value and / or an evaluation period of an event.

[0101] Optionally, in a possible implementation manner of the third aspect, a quantity of the at least one second reference signal is less than a quantity of the at least one first reference signal, and the quantity of the fourth measurement values is a plurality. The plurality of filtered values of the fourth measurement values and the third measurement value are used for determining whether the instance of the event is met.

[0102] Optionally, in a possible implementation manner of the third aspect, the transceiver is further configured to receive second information, and the second information is used for indicating that the plurality of filtered values of the fourth measurement values and the third measurement value are used for determining whether the instance of the event is met.

[0103] Optionally, in a possible implementation manner of the third aspect, the determination condition of the event being met includes at least one of: a difference between the measurement value of the third reference signal and the measurement value of the fourth reference signal is greater than or equal to a first threshold value, and a first quantity is greater than or equal to a second threshold value; and the first quantity is a quantity that the difference between the measurement value of the third reference signal and the measurement value of the fourth reference signal is greater than or equal to a third threshold value.

[0104] The fourth aspect of the present application provides a communication apparatus, which is a network device, or a part of the network device (for example, a processor, a chip or a chip system, etc.), or a logic module or software capable of realizing all or part of the functions of the network device. The communication apparatus comprises a transceiver unit. Alternatively, the communication apparatus comprises the transceiver unit and a processing unit.

[0105] The transceiver unit is configured to transmit a plurality of first reference signals and at least one second reference signal.

[0106] The transceiver unit is further configured to receive a measurement report.

[0107] The plurality of first reference signals are used to determine a third reference signal, and the at least one second reference signal is used to determine a fourth reference signal. The third reference signal is the latest reference signal in the plurality of first reference signals, and the fourth reference signal belongs to the at least one second reference signal. The measurement report is determined based on a third measurement value and a fourth measurement value. The third measurement value is a measurement value corresponding to the third reference signal, and the fourth measurement value comprises a measurement value corresponding to the fourth reference signal.

[0108] Optionally, in a possible implementation manner of the fourth aspect, the transmission period of the plurality of first reference signals is different from the transmission period of the at least one second reference signal.

[0109] Optionally, in a possible implementation manner of the fourth aspect, the number of the at least one second reference signal is a plurality, and the fourth measurement value is a measurement value corresponding to the latest second reference signal in the plurality of second reference signals.

[0110] Optionally, in a possible implementation manner of the fourth aspect, the third measurement value and the fourth measurement value are only used to determine whether one instance of the event meets the requirement.

[0111] Optionally, in a possible implementation manner of the fourth aspect, a plurality of comparisons of the third measurement value are regarded as one instance of the event, or a plurality of comparisons of the fourth measurement value are regarded as one instance of the event.

[0112] Optionally, in a possible implementation manner of the fourth aspect, the evaluation period of the event is the larger one of the first transmission period of the plurality of first reference signals and the second transmission period of the at least one second reference signal.

[0113] Optionally, in a possible implementation manner of the fourth aspect, the number of times that one instance of the event meets the requirement within the evaluation period is less than or equal to 1.

[0114] Optionally, in a possible implementation manner of the fourth aspect, the second transmission period of the at least one second reference signal is greater than the first transmission period of the plurality of first reference signals, and the second transmission period is used as a measurement period of the plurality of first reference signals.

[0115] Optionally, in a possible implementation manner of the fourth aspect, the transceiver is further configured to transmit a plurality of fifth reference signals, a period of the plurality of fifth reference signals is a third transmission period, the third measurement value corresponds to the plurality of fifth reference signals and the plurality of first reference signals, and the evaluation period of the event is a larger transmission period between the fourth transmission period and the second transmission period.

[0116] The fourth transmission period includes any one of the following: a largest transmission period between the first transmission period and the third transmission period, a smallest transmission period between the first transmission period and the third transmission period, and an average period of the first transmission period and the third transmission period.

[0117] Optionally, in a possible implementation manner of the fourth aspect, the transceiver is further configured to transmit a plurality of sixth reference signals, a period of the plurality of sixth reference signals is a fifth transmission period, the fourth measurement value includes a measurement value corresponding to the fourth reference signal and a measurement value corresponding to the plurality of sixth reference signals, and the evaluation period of the event or the measurement period of the measurement value is a larger transmission period between the sixth transmission period and the first transmission period.

[0118] The sixth transmission period includes any one of the following: a largest transmission period between the second transmission period and the fifth transmission period, a smallest transmission period between the second transmission period and the fifth transmission period, and an average period of the second transmission period and the fifth transmission period.

[0119] Optionally, in a possible implementation manner of the fourth aspect, a time domain symbol interval of the third reference signal corresponding to the third measurement value and the fourth reference signal corresponding to the fourth measurement value is less than a preset interval.

[0120] Optionally, in a possible implementation manner of the fourth aspect, the plurality of second reference signals are reference signals configured by the network device, and the first reference signal includes at least one of the following: a reference signal associated with an activated transmission configuration indication (TCI) of a physical downlink channel, a quasi co-location (QCL) source reference signal of an activated TCI of the physical downlink channel, a synchronization signal and physical broadcast channel block (SSB) having a QCL relationship with the activated TCI of the physical downlink channel, and a reference signal associated with a beam / TCI currently used by the terminal device; or,

[0121] The plurality of first reference signals are reference signals configured by the network device, and the second reference signal includes at least one of the following: a reference signal having a QCL relationship with an activated TCI of the physical downlink channel, and a reference signal associated with a beam / TCI currently used by the terminal device.

[0122] Optionally, in a possible implementation form of the fourth aspect, the transceiver is further configured to transmit the first information, the first information being used to indicate a larger one of the first transmission period of the first reference signal and the transmission period of the at least one second reference signal as the measurement period of the measurement value and / or the evaluation period of the event.

[0123] Optionally, in a possible implementation form of the fourth aspect, the number of the at least one second reference signal is less than the number of the at least one first reference signal, and the number of the fourth measurement values is multiple. The filtered values of the multiple fourth measurement values and the third measurement value are used to determine whether the one instance of the event is satisfied.

[0124] Optionally, in a possible implementation form of the fourth aspect, the transceiver is further configured to transmit the second information, the second information being used to indicate that the filtered values of the multiple fourth measurement values and the third measurement value are used to determine whether the one instance of the event is satisfied.

[0125] Optionally, in a possible implementation form of the fourth aspect, the determination condition of the event being satisfied comprises at least one of the following: a difference between the measurement value of the third reference signal and the measurement value of the fourth reference signal is greater than or equal to a first threshold value, and a first number of times is greater than or equal to a second threshold value; the first number of times is a number of times that the difference between the measurement value of the third reference signal and the measurement value of the fourth reference signal is greater than or equal to a third threshold value.

[0126] Optionally, in a possible implementation form of the fourth aspect, the processing unit is configured to switch the beam based on the measurement report.

[0127] The fifth aspect of the present application provides a communication apparatus, comprising at least one processor, the at least one processor being coupled with a memory; the memory is configured to store programs or instructions; the at least one processor is configured to execute the programs or instructions, so that the apparatus implements the method of any one of the possible implementation forms of the first aspect.

[0128] The sixth aspect of the present application provides a communication apparatus, comprising at least one processor, the at least one processor being coupled with a memory; the memory is configured to store programs or instructions; the at least one processor is configured to execute the programs or instructions, so that the apparatus implements the method of any one of the possible implementation forms of the second aspect.

[0129] The seventh aspect of the present application provides a communication apparatus, comprising at least one logic circuit and an input / output interface; the logic circuit is configured to execute the method of any one of the possible implementation forms of the first aspect.

[0130] The eighth aspect of the present application provides a communication apparatus, comprising at least one logic circuit and an input / output interface; the logic circuit is configured to execute the method according to any one of the possible implementation manners of the second aspect.

[0131] The ninth aspect of the present application provides a communication system, comprising the terminal device according to any one of the possible implementation manners of the fifth aspect and the network device according to any one of the possible implementation manners of the sixth aspect, or comprising the terminal device according to any one of the possible implementation manners of the seventh aspect and the network device according to any one of the possible implementation manners of the eighth aspect.

[0132] The tenth aspect of the present application provides a computer readable storage medium, which is configured to store one or more computer execution instructions, when the computer execution instructions are executed by a processor, the processor executes the method according to any one of the possible implementation manners of the first aspect or the second aspect.

[0133] The eleventh aspect of the present application provides a computer program product (or computer program), when the computer program in the computer program product is executed by the processor, the processor executes the method according to any one of the possible implementation manners of the first aspect or the second aspect.

[0134] The twelfth aspect of the present application provides a chip system, comprising at least one processor, configured to support the communication apparatus to execute the method according to any one of the possible implementation manners of the first aspect or the second aspect.

[0135] In a possible design, the chip system can further comprise a memory, configured to store necessary program instructions and data of the communication apparatus. The chip system can be composed of a chip, or can comprise the chip and other discrete devices. Optionally, the chip system further comprises an interface circuit, configured to provide the program instructions and / or data for the at least one processor.

[0136] The technical effects brought by any one of the designs of the third aspect to the twelfth aspect can be referred to the technical effects brought by the different designs of the first aspect and the second aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0137] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only belong to the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0138] FIG. 1A is a schematic diagram of a communication system to which embodiments of the present application are applicable;

[0139] FIG. 1B is a schematic diagram of a communication system to which embodiments of the present application are applicable;

[0140] FIG. 1C is a schematic diagram of a communication system to which embodiments of the present application are applicable;

[0141] FIG. 2 is a schematic diagram of a communication system to which embodiments of the present application are applicable;

[0142] FIG. 3 is a schematic diagram of a communication system to which embodiments of the present application are applicable;

[0143] FIG. 4A is a schematic diagram of beam management to which embodiments of the present application are applicable;

[0144] FIG. 4B is a schematic diagram of frequent triggering of multiple instances of an event to which embodiments of the present application are applicable;

[0145] FIG. 5 is a schematic diagram of a communication method to which embodiments of the present application are applicable;

[0146] FIG. 6 is a schematic diagram of a first reference signal and a second reference signal to which embodiments of the present application are applicable;

[0147] FIG. 7 is an example diagram of a third reference signal and a fourth reference signal to which embodiments of the present application are applicable;

[0148] FIG. 8 is another example diagram of a third reference signal and a fourth reference signal to which embodiments of the present application are applicable;

[0149] FIG. 9 is another example diagram of a third reference signal and a fourth reference signal to which embodiments of the present application are applicable;

[0150] FIG. 10 is another example diagram of a third reference signal and a fourth reference signal to which embodiments of the present application are applicable;

[0151] FIG. 11 is an example diagram of reference signal filtering to which embodiments of the present application are applicable;

[0152] FIGS. 12 to 15 are schematic diagrams of communication apparatuses provided by the present application. DETAILED DESCRIPTION

[0153] For the convenience of understanding the technical solutions of the embodiments of the present application, first, a brief introduction of the related terms in the present application is given as follows.

[0154] 1. Beam

[0155] A beam can be referred to as a spatial domain filter, a spatial filter, a spatial domain parameter, a spatial parameter, a spatial domain setting, a spatial setting, quasi-colocation (QCL) information, a QCL assumption, or a QCL indication, etc. in the NR protocol. A beam can be indicated by a transmission configuration indicator state (TCI-state) parameter, or a spatial relation parameter. Therefore, in this application, a beam can be replaced by a spatial domain filter, a spatial filter, a spatial domain parameter, a spatial parameter, a spatial domain setting, a spatial setting, quasi-colocation (QCL) information, a QCL assumption, a QCL indication, a TCI-state (including an up-link (UL) TCI state, a downlink TCI state (DL TCI state)), or a spatial relation, etc. The above terms are also equivalent to each other. A beam can also be replaced by other terms representing a beam, which are not limited herein.

[0156] A beam for transmitting a signal can be referred to as a transmission beam (Tx beam), a spatial domain transmission filter, a spatial transmission filter, a spatial domain transmission parameter, a spatial transmission parameter, a spatial domain transmission setting, or a spatial transmission setting. A downlink transmission beam can be indicated by a TCI-state. An uplink transmission beam can be indicated by any one of a spatial relation, a TCI-state, or an SRS resource (indicating a transmission beam using the SRS). Therefore, an uplink transmission beam can also be replaced by an SRS resource.

[0157] A beam for receiving a signal can be referred to as a reception beam (Rx beam), a spatial domain reception filter, a spatial reception filter, a spatial domain reception parameter or a spatial reception parameter, a spatial domain reception setting, or a spatial reception setting.

[0158] For example, a transmission beam can refer to a distribution of signal strength in different directions in space after a signal is transmitted by an antenna, and a reception beam can refer to a distribution of signal strength in different directions in space of a wireless signal received by an antenna. It can be understood that one beam can be associated with one or more physical antennas, corresponding to one or more antenna ports. For example, for a CSI-RS resource used for beam management, one or more ports can be included in one CSI-RS resource, and one CSI-RS resource corresponds to one beam, that is, all ports in the same CSI-RS resource correspond to the same beam.

[0159] When using a low or medium frequency band, the transmission end can transmit signals omnidirectionally or through a relatively wide angle. When using a high frequency band, the transmission end and the reception end can be arranged with many antenna arrays composed of antenna arrays, the transmission end transmits signals with certain beamforming weights, so that the transmitted signals form beams with spatial directivity, and the reception end receives signals with certain beamforming weights. This is beneficial to improve the received power of signals at the reception end and to resist path loss.

[0160] A beam is generally associated with a resource. For example, when performing beam measurement, the network device transmits signals on different resources using different beams, and the terminal device feeds back the measured signal quality of different resources, so that the network device knows the quality of the corresponding beam. During data transmission, beam information is also indicated through its corresponding resource. For example, the network device indicates the information of the physical downlink shared channel (PDSCH) beam of the terminal device through the TCI field in the downlink control information (DCI).

[0161] Optionally, one or more antenna ports can be included in one beam for transmitting data channels, control channels, sounding signals, and the like. The one or more antenna ports forming one beam can also be regarded as one antenna port set.

[0162] A beam is a kind of communication resource. A beam can be a wide beam, or a narrow beam, or other types of beams, and the technology for forming a beam can be beamforming technology or other technical means. The beamforming technology can be digital beamforming technology, analog beamforming technology, and hybrid digital / analog beamforming technology. Different beams can be considered as different resources.

[0163] 2. Channel state information (CSI)

[0164] CSI is used to evaluate or describe the characteristics of a communication channel, and can include, for example, channel gain, phase information, multipath fading information, interference information, and the like.

[0165] The CSI reporting mode can include periodic CSI reporting (P-CSI), semi-persistent CSI reporting (SP-CSI), and aperiodic CSI reporting (AP-CSI).

[0166] (1) The process of periodic CSI reporting includes: the network device configures the terminal device to perform periodic CSI reporting through high-layer signaling (such as RRC signaling), the terminal device performs channel measurement and interference measurement based on periodic channel state information reference signal (CSI-RS) resources, and reports CSI on the physical uplink control channel (PUCCH) at fixed time intervals. In periodic CSI reporting, the channel measurement resource (CMR) and the interference measurement resource (IMR) used for measurement are both periodic, and specific parameters such as the period and resource mapping can be configured by the network device to the terminal device through RRC signaling. In addition, the period of CSI reporting and the PUCCH resource used for reporting and other parameters are also configured by the network device to the terminal device through RRC signaling.

[0167] (2) The process of semi-persistent CSI reporting includes: when the terminal device is configured to use semi-persistent CSI reporting, the terminal device starts CSI reporting only after receiving the downlink signaling sent by the network to indicate the start of CSI reporting, and ends CSI reporting only after receiving the downlink signaling to indicate the stop of CSI reporting. Between the two downlink signaling issuing time points, the terminal device performs periodic CSI measurement and reporting. The CMR and IMR used by semi-persistent CSI reporting can be periodic or semi-persistent. When the terminal device uses semi-persistent CSI reporting, it can report on the PUCCH resource, and the network device can activate and deactivate semi-persistent CSI reporting through downlink high-layer signaling (such as MAC CE signaling). When the terminal device uses semi-persistent CSI reporting, it can also report on the physical uplink shared channel (PUSCH) resource, and the network device can activate and deactivate semi-persistent CSI reporting through physical layer downlink control signaling (DCI). Whether the SP CSI measurement using PUCCH or the SP CSI measurement using PUSCH, the measurement parameters such as measurement quantity and measurement bandwidth can be configured by the network device to the terminal device through RRC signaling.

[0168] (3) The process of aperiodic CSI reporting and measurement includes:

[0169] The network device first semi-statically configures multiple CSI reporting configuration parameters for the terminal device through downlink RRC signaling. For example, the network device triggers one or more CSI reporting configuration parameters to the terminal device through DCI, the terminal device performs CSI measurement according to the CSI reporting configuration parameters, and reports the CSI measurement result using the PUSCH resource. It should be noted that although aperiodic CSI reporting and semi-persistent CSI reporting both need to be triggered by the network device, aperiodic CSI reporting does not need to be deactivated after being activated by DCI for CSI measurement and reporting, and only performs measurement and reporting once. The CMR and IMR used by aperiodic CSI reporting can be periodic or semi-persistent or aperiodic.

[0170] It should be noted that in the above three CSI reporting schemes, the configuration parameters required in the CSI reporting process can be configured to the terminal device by the network device through RRC signaling, for example, the configuration parameters can include reporting quantity, reporting bandwidth, etc. The reporting quantity can include one or more of rank indicator (RI), channel quality indicator (CQI), or precoding matrix indicator (PMI), reference signal receiving power (RSRP), CSI-RS resource indication (CRI), etc. In the NR system, the network device can complete different measurement requirements through the configuration parameters of CSI measurement.

[0171] The network device can configure the resource configuration parameters of the CSI to the terminal device through high layer signaling, such as RRC signaling, for indicating the resources used for measurement and reporting to the terminal device. For example, the resources used for measurement and reporting can be configured to the terminal device through the field csi-resourceConfig in the RRC signaling. The resource configuration parameters of the CSI can include 1-3 CSI-RS resource settings.

[0172] In an example, when the resource configuration parameters of the CSI include 1 CSI-RS resource setting, the CSI-RS resource setting is used to implement beam measurement, i.e., to calculate the Layer 1 Reference Signal Received Power (L1-RSRP).

[0173] In another example, when the resource configuration parameter of the CSI includes 2 CSI-RS resource settings, one CSI-RS resource setting contains a set of non-zero power channel state information-reference signal resource sets (NZP CSI-RS resource sets). The NZP CSI-RS resource set can be configured by the network device to the terminal device through a high-level parameter NZP-CSI-RS-ResourceSet. The network device can indicate to the terminal device an NZP CSI-RS resource set in the set of NZP CSI-RS resource sets for channel measurement, so that the terminal device performs channel measurement based on the NZP CSI-RS resource set indicated by the network device. The other CSI-RS resource setting contains one NZP CSI-RS resource set or one CSI interference measurement (CSI-IM) resource set, and further, the terminal device performs interference measurement on the NZP CSI-RS resource set or the CSI-IM resource set. The CSI-IM resource set can be configured by the network device to the terminal device through a high-level parameter CSI-IM-ResourceSet.

[0174] Note that: in the above-mentioned one NZP CSI-RS resource set for channel measurement indicated by the network device in the CSI-RS resource setting, n NZP CSI-RS resources can be contained, when the interference measurement is based on NZP CSI-RS, n = 1; and when the interference measurement is based on CSI-IM, n ≥ 1 and n is an integer. When n ≥ 1, the CSI-IM resource set also contains the same number of CSI-IM resources, and corresponds to the n NZP CSI-RS resources in the NZP CSI-RS resource set one by one. The terminal device selects one NZP CSI-RS resource, such as the Xth NZP CSI-RS resource, from the n NZP CSI-RS resources, and measures and reports the CSI measurement result on this NZP CSI-RS resource and the corresponding CSI-IM resource. The content of the CSI measurement result includes the reporting quantity indicated by the network device through the high layer signaling (reportQuantity, contained in the CSI reporting configuration parameter CSI-ReportConfig). When the terminal device reports the CSI measurement result, the CSI measurement result corresponding to the indication of the NZP CSI-RS resource (CSI-RS resource indicator, CRI) will be reported, that is, used to indicate X.

[0175] In yet another example, when the resource configuration parameter of the CSI includes 3 CSI-RS resource settings, the first CSI-RS resource setting includes a set of NZP CSI-RS resource sets. The network device can indicate to the terminal device a NZP CSI-RS resource set in the set of NZP CSI-RS resource sets for channel measurement, so that the terminal device performs channel measurement based on the NZP CSI-RS resource set indicated by the network device. The second CSI-RS resource setting includes a set of NZP CSI-RS resource sets; the third CSI-RS resource setting includes a CSI-IM resource set. The terminal device performs interference measurement based on the second and third resources, the difference being that the terminal device performs inter-user interference measurement based on the NZP CSI-RS resource set included in the second CSI-RS resource setting, and performs inter-cell interference measurement based on the CSI-IM resource set included in the third CSI-RS resource setting.

[0176] 3. CSI-RS configuration

[0177] In the NR system, channel measurement is performed on NZP CSI-RS resource setting. The time-domain transmission behavior of NZP CSI-RS can be periodic (Periodic CSI-RS, P-CSI-RS), semi-persistent (Semi-persistent CSI-RS, SP-CSI-RS), or aperiodic (Aperiodic CSI-RS, AP-CSI-RS). For each CSI reporting, one CSI-RS resource setting can be configured for channel measurement, and the CSI-RS resource setting is configured with a type (P / SP / AP-CSI-RS) indicating the time-domain transmission behavior. Each CSI-RS resource setting can contain m CSI-RS resource sets. When the type of the CSI-RS resource setting is P / SP-CSI-RS, m = 1; when the type of the CSI-RS resource setting is AP-CSI-RS, m ≥ 1, and when m ≥ 1, the network device selects one CSI-RS resource set from the m ≥ 1 CSI-RS resource sets for the terminal device for a specific CSI measurement reporting.

[0178] 4、terminal device

[0179] The terminal device can be a wireless terminal device capable of receiving network device scheduling and indication information. The wireless terminal device can be a device that provides voice and / or data connectivity to a user, or a handheld device with wireless connection function, or other processing devices connected to a wireless modem.

[0180] A terminal device can communicate with one or more core networks or the Internet via a radio access network (RAN), and the terminal device can be a mobile terminal device, such as a mobile phone (or called "cellular" phone, mobile phone), a computer, and a data card, for example, which can be a portable, pocket, handheld, computer built-in, or vehicle mounted mobile device that exchanges voice and / or data with a radio access network. For example, a personal communication service (PCS) phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a Pad, a computer with wireless transceiver function, and the like. The wireless terminal device can also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile station (MS), a remote station, an access point (AP), a remote terminal, an access terminal, a user terminal, a user agent, a subscriber station (SS), a customer premises equipment (CPE), a terminal, a user equipment (UE), a mobile terminal (MT), and the like. The terminal device can also be a wearable device and a terminal device in a next generation communication system, such as a 5G communication network and a future communication network, or a terminal device in a future evolved public land mobile network (PLMN), and the like.

[0181] 5. Network device

[0182] The network device can be a device in a wireless network, for example, the network device can be a radio access network (RAN) node (or device) that accesses a terminal device to a wireless network, which can also be referred to as a base station. Currently, some examples of RAN devices are: a new generation Node B (gNodeB) in a 5G communication system, a transmission reception point (TRP), 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), or a wireless fidelity (Wi-Fi) access point (AP), etc. In addition, in one network structure, the network device can include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node.

[0183] In the above, the network device can send configuration information (for example, carried in a scheduling message and / or an indication message) to the terminal device, and the terminal device further performs network configuration according to the configuration information, so that the network configuration between the network device and the terminal device is aligned; or, the network configuration preset in the network device and the network configuration preset in the terminal device are used to align the network configuration between the network device and the terminal device. Specifically, "alignment" means that when there is an interaction message between the network device and the terminal device, the two devices are consistent in understanding the carrier frequency of the interaction message transmission and reception, the type of the interaction message, the meaning of the field information carried in the interaction message, or other configurations of the interaction message.

[0184] In addition, in other possible cases, the network device can be other devices that provide wireless communication functions for the terminal device. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device. For the convenience of description, the embodiments of the present application do not limit.

[0185] The network device can also include a core network device, for example, including an access and mobility management function (AMF), a user plane function (UPF), or a session management function (SMF), etc.

[0186] In the embodiments of the present application, the device for implementing the function of the network device can be the network device, or a device capable of supporting the network device to implement the function, such as a chip system, which can be installed in the network device. In the technical solutions provided in the embodiments of the present application, the device for implementing the function of the network device is taken as an example to describe the technical solutions provided in the embodiments of the present application.

[0187] 6. Configuration and pre-configuration

[0188] In the present application, configuration and pre-configuration will be used simultaneously. Among them, configuration refers to that the network device / server sends some parameter configuration information or parameter values to the terminal device through messages or signaling, so that the terminal device determines the communication parameters or the resources in the transmission according to the values or information. The pre-configuration is similar to the configuration, which can be the parameter information or parameter values agreed by the network device / server and the terminal device in advance, or the parameter information or parameter values adopted by the base station / network device or the terminal device according to the standard protocol, or the parameter information or parameter values pre-stored in the base station / server or the terminal device. The present application does not limit this.

[0189] Further, these values and parameters can be changed or updated.

[0190] 7、The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "At least one" means one or more, and "multiple" means two or more. "And / or" describes the association relationship of associated objects, which means that there can be three relationships, for example, A and / or B can represent the following cases: A exists alone, B exists alone, A and B exist together, and A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects. "At least one of the following" or similar expressions means any combination of these items, including any combination of single or multiple items. For example, "at least one of A, B and (or) C" can represent the following cases: A exists alone, B exists alone, C exists alone, A and B exist together, A and C exist together, B and C exist together, and A, B and C exist together. In addition, unless otherwise specified, the ordinal numbers "first", "second", etc. mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, time sequence, priority or importance of the multiple objects.

[0191] 8、In the embodiments of the present application, "sending" and "receiving" represent the direction of signal transmission. For example, "sending information to XX" can be understood as that the destination of the information is XX, which can include direct sending through the air interface, or indirect sending through the air interface by other units or modules. "Receiving information from YY" can be understood as that the source of the information is YY, which can include direct receiving from YY through the air interface, or indirect receiving from YY through the air interface by other units or modules. "Sending" can also be understood as "output" of the chip interface, and "receiving" can also be understood as "input" of the chip interface. For example, "sending" can also be understood as that the baseband part inside the device outputs information to the radio frequency part, and "receiving" can also be understood as that the radio frequency part inside the device receives the output information of the baseband part.

[0192] In other words, sending and receiving can be between devices, for example, between network devices and terminal devices, or can be within a device, for example, between components, modules, chips, software modules or hardware modules within a device through a bus, wire or interface.

[0193] It can be understood that the information between the source and the destination of the information transmission can be processed as necessary, such as encoding, modulation, etc., but the destination can understand the valid information from the source. Similar expressions in the present application can be understood similarly, and will not be repeated here.

[0194] In the embodiments of the present application, transmission includes sending and / or receiving. That is, transmission can be sending, or receiving, or both sending and receiving, which is not limited here.

[0195] In addition, the receiving can also be understood as detecting, monitoring, etc., which are not limited here. For example, for receiving DCI, it usually means monitoring DCI.

[0196] In the present application, “for indicating” can include for directly indicating and for indirectly indicating. When describing that certain indication information is for indicating A, it can be understood as that the indication information carries A, directly indicates A, or indirectly indicates A.

[0197] In the present application, the information indicated by the indication information is referred to as to-be-indicated information. In the specific implementation process, there are many ways to indicate the to-be-indicated information, for example, it can be realized by a direct indication manner, such as indicating by the to-be-indicated information itself or the index of the to-be-indicated information, etc. It can also be realized by an indirect indication manner by indicating other information, wherein the other information has an association relationship with the to-be-indicated information. It can also only indicate a part of the to-be-indicated information, and the other part of the to-be-indicated information is known or agreed in advance. For example, the indication of a specific information can also be realized by means of the pre-agreed (for example, the protocol stipulates) arrangement order of each information, thereby reducing the indication overhead to a certain extent.

[0198] The to-be-indicated information can be sent as a whole, or can be sent separately into multiple sub-information, and the sending period and / or sending occasion of the sub-information can be the same or different. The specific sending method is not limited in the present application. The sending period and / or sending occasion of the sub-information can be pre-defined, for example, pre-defined according to the protocol, or can be configured by the transmitting end device to the receiving end device. The configuration information can include, for example but not limited to, one or a combination of at least two of RRC signaling, medium access control (MAC) layer signaling and physical layer signaling. The MAC layer signaling includes, for example, MAC CE; the physical layer signaling includes, for example, downlink control information (DCI).

[0199] In this application, the same or similar parts among various embodiments can be mutually referred to, unless otherwise specified. In various embodiments of this application, and various implementation manners / implementation methods / realization methods in each embodiment, the terms and / or descriptions of different embodiments, and various implementation manners / implementation methods / realization methods in each embodiment are consistent, and can be mutually referred to, unless otherwise specified and logically conflicted. The technical features in different embodiments, and various implementation manners / implementation methods / realization methods in each embodiment can be combined to form new embodiments, implementation manners, implementation methods, or realization methods according to their inherent logical relationship. The following implementation manners of this application do not constitute a limitation on the protection scope of this application.

[0200] In order to facilitate the understanding of the method provided by the embodiments of the present application, the system architecture of the method provided by the embodiments of the present application will be described below. It can be understood that the system architecture described in the embodiments of the present application is used to more clearly illustrate the scheme of the embodiments of the present application, and does not constitute a limitation on the scheme provided by the embodiments of the present application.

[0201] Please refer to FIG. 1A, which is a schematic diagram of the architecture of a communication system 1000 applied by the embodiments of the present application. As shown in FIG. 1A, the communication system 1000 includes a radio access network (RAN) 100 and a core network 200. Optionally, the communication system 1000 can also include an Internet 300. The RAN 100 includes at least one RAN node (such as 110a and 110b in FIG. 1A, collectively referred to as 110), and can also include at least one terminal device (such as 120a-120j in FIG. 1A, collectively referred to as 120). The RAN 100 can also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in FIG. 1A). The terminal devices 120 are connected to the RAN nodes 110 in a wireless manner, and the RAN nodes 110 are connected to the core network 200 in a wireless or wired manner. The core network devices in the core network 200 and the RAN nodes 110 in the RAN 100 can be independent and different physical devices, or can be the same physical device integrated with the logical functions of the core network devices and the logical functions of the RAN nodes. The terminal devices and the terminal devices, and the RAN nodes and the RAN nodes can be connected to each other in a wired or wireless manner.

[0202] The RAN 100 can be an evolved universal terrestrial radio access (E-UTRA) system, a NR system, or a future wireless access system defined in 3GPP. The RAN 100 can also include two or more different wireless access systems. The RAN 100 can also be an open RAN (O-RAN).

[0203] A RAN node, also referred to as a radio access network device, a RAN entity, or an access node, is used to help terminal devices access a communication system through wireless means. In one application scenario, the RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5th generation (5G) mobile communication system, a next generation NodeB in a 6th generation (6G) mobile communication system, or a base station in a future mobile communication system. The RAN node can be a macro base station (such as 110a in FIG. 1A), a micro base station, or an indoor station (such as 110b in FIG. 1A), or a relay node or a donor node.

[0204] In another application scenario, a terminal device can access a network through cooperation of a plurality of RAN nodes, and different RAN nodes implement part of functions of a base station. For example, a RAN node can be a central unit (CU), a distributed unit (DU), or a radio unit (RU). The CU here implements functions of a radio resource control protocol and a packet data convergence protocol (PDCP) of the base station, and can also implement a function of a service data adaptation protocol (SDAP); the DU implements functions of a radio link control layer and a medium access control (MAC) layer of the base station, and can also implement part of a physical layer or all of a physical layer; and specific descriptions about the protocol layers can be referred to related technical specifications of the 3GPP. The RU can be used to implement functions of transceiving a radio frequency signal. The CU and the DU can be two independent RAN nodes, or can be integrated in a same RAN node, for example, integrated in a baseband unit (BBU). The RU can be included in a radio frequency device, for example, included in a remote radio unit (RRU) or an active antenna unit (AAU). The CU can be further divided into two types of RAN nodes, a CU-control plane and a CU-user plane.

[0205] In different systems, a RAN node can have different names. For example, in an O-RAN system, a CU can be referred to as an open CU (O-CU), a DU can be referred to as an open DU (O-DU), and an RU can be referred to as an open RU (O-RU). The RAN node in the embodiments of the present application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. For example, the RAN node can be a server loaded with a corresponding software module. The embodiments of the present application do not limit specific technologies and specific device forms adopted by the RAN node.

[0206] In addition, the RAN node can also be referred to as a network device, which is a device deployed in a wireless access network to provide wireless communication functions for terminal devices. The network device can include various forms of macro base stations, micro base stations (also known as small stations), relay stations, access points, etc. In systems using different wireless access technologies, the names of network devices can be different, such as eNB or eNodeB (Evolutional NodeB) in Long Term Evolution (LTE). The network device can also be a wireless controller in a cloud radio access network (CRAN) scenario. The network device can also be a base station device in a future 5G network or a network device in a future evolved PLMN network. The network device can also be a wearable device or a vehicle-mounted device. The network device can also be a transmission and reception point (TRP). In addition, in a network structure, the network device can include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node. For ease of description, a base station is described as an example of a RAN node below.

[0207] A terminal device is a device with wireless transceiver function, which can transmit signals to a base station or receive signals from a base station. The terminal device can also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal device, etc. The terminal device can be widely applied in various scenarios, such as device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), internet of things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, remote medical treatment, smart power grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal device can be a mobile phone, tablet computer, computer with wireless transceiver function, wearable device, vehicle, aircraft, ship, robot, mechanical arm, smart home device, etc. Embodiments of the present application do not limit the specific technology and specific device form of the terminal device.

[0208] The base stations and the terminal devices can be fixed in position or mobile. The base stations and the terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water; can also be deployed on airplanes, balloons, and artificial satellites. Embodiments of the present application do not limit the application scenarios of the base stations and the terminal devices.

[0209] The roles of the base stations and the terminal devices can be relative, for example, the helicopter or the unmanned aerial vehicle 120i in FIG. 1A can be configured as a mobile base station, and for those terminal devices 120j that access the wireless access network 100 through 120i, the terminal device 120i is a base station; but for the base station 110a, 120i is a terminal device, that is, 110a communicates with 120i through a wireless air interface protocol. Of course, 110a and 120i can also communicate through a base station-to-base station interface protocol, and in this case, 120i is also a base station relative to 110a. Therefore, the base stations and the terminal devices can be collectively referred to as communication devices, 110a and 110b in FIG. 1A can be referred to as communication devices with base station functions, and 120a-120j in FIG. 1A can be referred to as communication devices with terminal device functions.

[0210] The base stations and the terminal devices, the base stations and the base stations, and the terminal devices and the terminal devices can communicate through licensed frequency spectrum, can communicate through unlicensed frequency spectrum, or can simultaneously communicate through licensed frequency spectrum and unlicensed frequency spectrum; can communicate through frequency spectrum below 6 gigahertz (GHz), can communicate through frequency spectrum above 6 GHz, or can simultaneously use frequency spectrum below 6 GHz and frequency spectrum above 6 GHz. Embodiments of the present application do not limit the frequency spectrum resources used for wireless communication.

[0211] In embodiments of the present application, the functions of the base station can also be performed by a module (such as a chip) in the base station, or by a control subsystem containing base station functions. The control subsystem containing base station functions herein can be a control center in the above-mentioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. The functions of the terminal device can also be performed by a module (such as a chip or a modem) in the terminal device, or by a device containing terminal device functions.

[0212] It can be understood that the RAN 100 has been described above to include at least one RAN node (such as 110a and 110b in FIG. 1A, collectively referred to as 110) and at least one terminal device (such as 120a-120j in FIG. 1A, collectively referred to as 120).

[0213] In one possible implementation, the communication system shown in FIG. 1A can also be as shown in FIG. IB, i.e., including one RAN node 110 and multiple terminal devices (e.g., 120A and 120B in FIG. IB). In this case, the single RAN node can transmit data or control signaling to a single or multiple terminal devices.

[0214] In another possible implementation, the communication system shown in FIG. 1A can also be as shown in FIG. 1C, i.e., including multiple RAN nodes (e.g., 110A, 110B, and 110C in FIG. 1C) 110 and one terminal device 120. In this case, the multiple RAN nodes can also transmit data or control signaling to the single terminal device simultaneously.

[0215] Optionally, FIG. 2 shows an example diagram of the RAN 100 being an O-RAN system, which can include other components than those shown in the figure. As shown in FIG. 2, the network device is also referred to as an access network device. The access network device (RAN, which can be an eNB or a gNB or a next generation access network device) communicates with the core network (CN) through a backhaul link and communicates with the user equipment (UE) through an air interface.

[0216] Specifically, the baseband unit (BBU) in the access network device communicates with the core network (CN) through a backhaul link, and the radio unit (RU) in the access network device communicates with at least one UE through an air interface. The BBU communicates with at least one RU through a fronthaul link, and the BBU and the RU can be co-located or not.

[0217] The BBU includes at least one central unit (CU) and at least one distributed unit (DU), which can communicate through at least one midhaul link.

[0218] Further, FIG. 3 shows an example diagram of the network element function division and protocol layer structure of an O-RAN device.

[0219] In some examples, the CU is a logical node that carries Radio Resource Control (RRC) layer, Service Data Adaptation Protocol (SDAP) layer, Packet Data Convergence Protocol (PDCP) layer, and other control functions of the access network device. The CU is connected to network nodes such as core network through some interfaces, which can be E2 interface or the like. Optionally, the CU can have part of the functions of the core network. The CU (e.g., PDCP layer and higher layers) is connected to the DU (e.g., RLC layer and lower layers) through some interfaces, which can be F1 interface or the like. In some examples, these interfaces (e.g., F1 interface) can provide Control Plane (C-Plane) and User Plane (U-Plane) functions (e.g., interface management, system information management, UE context management, RRC message transmission, etc.). F1AP is an application protocol of F1 interface, which defines signaling procedures of F1 in some examples. The F1 interface supports control plane F1-C and user plane F1-U.

[0220] In some examples, the CU can be split into a CU-CP (Control Unit-Control Plane) and a CU-UP (Control Unit-User Plane), where the CU-CP is a logical node carrying the RRC layer and the PDCP-C (Control plane part of PDCP) layer, used to implement the control plane function of the CU. The CU-CP can interact with a network element in the core network used to implement the control plane function. The network element in the core network used to implement the control plane function can be an access and mobility function network element, such as an Access and Mobility Management Function (AMF) in a 5G system. The AMF network element is used to be responsible for mobility management in a mobile network, such as location updating of a terminal device, registration network of a terminal device, handover of a terminal device, etc. The CU-UP is a logical node carrying the SDAP layer and the PDCP-U (User plane part of PDCP) layer, used to implement the user plane function of the CU. The CU-UP can interact with a network element in the core network used to implement the user plane function. The network element in the core network used to implement the user plane function, for example, a User Plane Function (UPF) in a 5G system, is used to be responsible for forwarding and receiving data in a terminal device. The above configuration of the CU and the DU is only an example, and the CU and the DU can also be configured to have functions as needed. For example, the CU or the DU can be configured to have more protocol layer functions, or the CU or the DU can be configured to have partial processing functions of the protocol layer. For example, part of the functions of the RLC layer and the functions of the protocol layer above the RLC layer are arranged in the CU, and the remaining functions of the RLC layer and the functions of the protocol layer below the RLC layer are arranged in the DU. For another example, the functions of the CU or the DU can be divided according to the service type or other system requirements, for example, according to the delay, the functions that need to meet the delay requirement are arranged in the DU, and the functions that do not need to meet the delay requirement are arranged in the CU.

[0221] In some examples, a DU is a logical node that hosts Radio Link Control (RLC) layer, Medium Access Control (MAC) layer, Higher Physical Layer (Higher PHY) layer, and other functions. In some examples, a DU can control at least one RU. The DU is connected to the RUs through some interfaces, which can be a fronthaul interface. In some examples, the Higher PHY layer includes parts of PHY layer processing, such as Forward Error Correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc.

[0222] In some examples, an RU is a logical node that hosts Lower Physical Layer (Lower PHY) and Radio Frequency (RF) processing. In some examples, an RU can be a 3GPP Transmission Reception Point (TRP) or a Remote Radio Head (RRH) or other similar functional entity. In some examples, the Low-PHY includes parts of PHY processing, such as fast Fourier transform (FFT), inverse fast Fourier transformation (IFFT), digital beamforming and filtering, etc. An RU communicates with one or more UEs over a wireless link.

[0223] The DU and the RU can be co-located or not. The DU and the RU exchange control plane information and user plane information via a Lower-Layer Split CUS-Plane (LLS-CUS) interface over a fronthaul link. The LLS-CUS can include a LLS-C interface and a LLS-U interface that provide a control plane (C-Plane) and a user plane (U-Plane), respectively. In some examples, the control plane (C-Plane) refers to real-time control between the DU and the RU. The DU and the RU exchange management information via a LLS-M interface of the fronthaul link, and the management plane (M-Plane) refers to non-real-time management operations between the DU and the RU.

[0224] The DU and the RU can cooperate to jointly implement the functions of the PHY layer. One DU can be connected to one or more RUs. The functions of the DU and the RU can be configured in various ways according to the design. For example, the DU is configured to implement baseband functions, and the RU is configured to implement radio frequency functions. For another example, the DU is configured to implement high-layer functions in the PHY layer, and the RU is configured to implement low-layer functions in the PHY layer or implement the low-layer functions and radio frequency functions. The high-layer functions in the PHY layer can include a part of the functions of the PHY layer that are closer to the MAC layer, and the low-layer functions in the PHY layer can include another part of the functions of the PHY layer that are closer to the radio frequency side.

[0225] In different systems, the CU (or CU-CP and CU-UP), the DU, or the RU can also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, the CU can also be referred to as an O-CU (open CU), the DU can also be referred to as an O-DU, the CU-CP can also be referred to as an O-CU-CP, the CU-UP can also be referred to as an O-CU-UP, and the RU can also be referred to as an O-RU. For the convenience of description, the CU, the CU-CP, the CU-UP, the DU, and the RU are taken as examples for description in this application.

[0226] With the application of large-scale antenna technology, by adjusting the weights of the antenna array, a directional beam can be formed, the beam gain can be improved, and the interference to the surrounding can be reduced. Especially in the 5G system, as the frequency band becomes higher, the transmission path loss of high frequency increases, and the beam forming / beam forming technology is needed to form beams pointing to different directions, thereby improving the coverage performance. In the millimeter wave frequency range (frequency range 2, FR2), the terminal device can use an antenna array to form a beam to overcome the high-frequency coverage problem.

[0227] For example, in the beam management scheme shown in FIG. 4A, the network device (for example, a base station) transmits different reference signals in different directions, and the network device transmits synchronization signals and PBCH blocks (SSB), and the terminal device obtains the measurement results of each SSB by measurement. For example, the reference signal received power (RSRP) and other parameters of the SSB. Thus, the best Tx beam of the network device for the terminal device can be known. Meanwhile, in FR2, the terminal device also has a receiving beam (Rx beam). The terminal device can determine the best Rx beam for SSB1 by receiving the SSB transmitted by the network device with different Rx beams.

[0228] In the beam management procedure, the network device obtains the quality of different beams by configuring the measurement and reporting of reference signals. However, the measurement and reporting behavior of the terminal device is controlled by the network device. If the network device wants to know the beam-related information of the terminal device more frequently, the network device can configure periodic reference signals / reporting for the terminal device, but the cost is to occupy a large amount of uplink resources. If the network device wants to save uplink resources, the network device can configure aperiodic reporting, and then trigger the terminal device to report when needed, but the network device may not be able to timely discover the change of the beam quality.

[0229] Currently, a procedure triggered by the terminal device to report the beam is discussed. Specifically, the terminal device measures the reference signals, and when some defined events are met, the terminal device triggers the reporting. The current standard introduces the following conditions for meeting the events: the quality of the current "new beam" is better than the "current beam" and exceeds a threshold.

[0230] However, when there are multiple measurement results of the new beam or the current beam, it will cause the number of times of judging the events to be too many, thereby causing the terminal device to frequently report. In addition, too frequent measurement of one of the reference signals may not bring additional gain, but will cause the power consumption problem of the terminal device.

[0231] For example, as shown in FIG. 4B, the reference signal of the new beam is referred to as RSn, and the reference signal of the current beam is referred to as RSc. The transmission period of RSn is less than the transmission period of RSc. That is, in a certain period of time, the number of RSn is more than the number of RSc. As shown in FIG. 4B, in the process of judging the instances of the events, the measurement result of one RSc may generate multiple instances (for example, 4 instances in FIG. 4B). This will cause the number of times of judging the events to be too many, thereby causing the terminal device to frequently report. In addition, the measurement result of the RSc may be a transient result caused by channel fading, and using the transient result to judge multiple instances of the events will also affect the false triggering of the events.

[0232] To solve the above technical problems, the embodiments of the present application provide multiple ideas, which are described below by taking the comparison between two types of reference signals (reference signal 1 and reference signal 2) as an example. It can be understood that the reference signal 1 can refer to the aforementioned RSn, and the reference signal 2 refers to the aforementioned RSc. Alternatively, the reference signal 1 can refer to the aforementioned RSc, and the reference signal 2 refers to the aforementioned RSn, which is not limited here.

[0233] The first thought is used to determine whether the instance of the event meets the measurement value of the two types of reference signals used. Under this thought, the latest measurement value can refer to the latest measurement value of any one of the two types of reference signals, and the latest measurement value can also refer to the measurement value of the two types of reference signals.

[0234] The second thought is that the measurement value of the two types of reference signals used to determine whether the last instance of the event meets the measurement value of the two types of reference signals cannot be used for the determination of the previous event instance. Or cannot be used for the determination of the subsequent event instance. Or cannot be used for the determination of the previous or subsequent event instance.

[0235] The third thought is that one measurement value is used for one event instance determination. Or it can be understood that the evaluation of the corresponding event instance based on the same measurement value is recorded as an instance of the event.

[0236] The fourth thought is that the evaluation period of the determination of whether the instance of the event meets is the maximum of the two transmission periods of the two types of reference signals.

[0237] The fifth thought is to use the larger transmission period of the two types of reference signals as the measurement period of the measurement value. This thought can also be understood as measurement relaxation. That is, the measurement is not based on the reference signal, and the periodic measurement is performed according to the above larger transmission period.

[0238] It should be noted that the above several thoughts are all for how to determine the measurement value (or measurement result) used to determine whether the instance of the event meets. Or it can be understood that the above several thoughts are all for how to determine the reference signal used to determine whether the instance of the event meets. Or it can be understood that the thought provided by the present application proposes to regulate how the terminal device selects the measurement result of the new beam and the current beam to determine the number of event instances that meet, so as to avoid the false triggering of the event.

[0239] The above ideas are described below in conjunction with the drawings. Please refer to FIG. 5, which is a flowchart of a communication method provided by an embodiment of the present application. The method includes steps 501 to 503. The steps 501 to 503 can be performed by a communication apparatus. The "communication apparatus" can refer to the communication apparatus itself (for example, a terminal device and / or a network device), a component in the communication apparatus (for example, a processor, a chip, or a chip system, etc.), or a logic module or software capable of realizing all or part of the functions of the communication apparatus. The communication apparatus can be a terminal device or a network device in the communication system shown in FIGS. 1A to 4B. The steps 501 to 503 are described below by taking the communication apparatus as an example. The processing performed by a single execution subject in the steps 501 to 503 can also be divided into processing performed by multiple execution subjects, which can be logically and / or physically separated. For example, in the case where the communication apparatus is a network device, the processing performed by the communication apparatus can be divided into processing performed by at least one of the CU, the DU, and the RU.

[0240] In step 501, the network device sends multiple first reference signals and at least one second reference signal to the terminal device.

[0241] The network device sends multiple first reference signals and at least one second reference signal to the terminal device. Correspondingly, the terminal device receives the multiple first reference signals and the at least one second reference signal sent by the network device.

[0242] The multiple first reference signals can refer to the number of first reference signals sent by the network device within a first time window being 2 or more than 2. The at least one second reference signal can refer to the number of first reference signals sent by the network device within the first time window being more than 1. Of course, the multiple first reference signals can also refer to the number of first reference signals received by the terminal device within a second time window being 2 or more than 2. The at least one second reference signal can refer to the number of first reference signals received by the terminal device within the second time window being more than 1.

[0243] It should be noted that if the time delay existing between sending and receiving is considered, the first time window and the second time window can be different. If the time delay is not considered, the first time window can be approximately equal to the second time window. For the convenience of description, the "receiving time window" and the "sending time window" are described uniformly as a transmission time window in the following, that is, the network device and the terminal device transmit multiple first reference signals and at least one second reference signal within the transmission time window.

[0244] Optionally, the first reference signal can be understood as a reference signal transmitted according to a first transmission period. The second reference signal can be understood as a reference signal transmitted according to a second transmission period.

[0245] Further, the first transmission period of the plurality of first reference signals is different from the second transmission period of the at least one second reference signal. For example, the first transmission period is greater than or less than the second transmission period. Or it can be understood that, in the transmission time window, the number of first reference signals transmitted is different from the number of second reference signals transmitted. In addition, the first transmission period and the second transmission period can be divisible or not divisible, which is not limited here.

[0246] For example, the transmission time window includes one reference signal with a larger period and a plurality of reference signals with a smaller period.

[0247] For example, the first transmission period T1 of the first reference signal is less than the second transmission period T2 of the second reference signal, as shown in FIG. 6. As can be seen from FIG. 6, in the transmission time window 1, the number of first reference signals transmitted by the network device and the terminal device is 3, and the number of second reference signals transmitted by the network device and the terminal device is 1.

[0248] In a possible implementation manner, the plurality of first reference signals are reference signals configured for the network device, and the at least one second reference signal includes at least one of the following: a reference signal associated with an activated transmission configuration indicator (TCI) of a physical downlink channel, a quasi co-located (QCL) source reference signal of the activated TCI of the physical downlink channel, an SSB having a QCL relationship with the activated TCI of the physical downlink channel, a reference signal associated with a beam / TCI currently used by the terminal device, and the like. The physical downlink channel can include at least one of the following: a physical downlink shared channel (PDSCH), a physical downlink control channel (PDCCH), and the like.

[0249] In this manner, the plurality of first reference signals can be understood as corresponding to the aforementioned "new beam". The at least one second reference signal can be understood as corresponding to the aforementioned "current beam". That is, the first reference signal can be referred to as RSn, and the second reference signal can be referred to as RSc.

[0250] In another possible implementation manner, the at least one second reference signal is a reference signal configured for the network device, and the plurality of first reference signals include at least one of the following: a reference signal associated with an activated TCI of a physical downlink channel, a QCL source reference signal of the activated TCI of the physical downlink channel, an SSB having a QCL relationship with the activated TCI of the physical downlink channel, a reference signal associated with a beam / TCI currently used by the terminal device, and the like.

[0251] In this manner, the plurality of first reference signals can be understood as corresponding to the aforementioned "current beam", and the at least one second reference signal can be understood as corresponding to the aforementioned "new beam". That is, the first reference signal can be referred to as RSc, and the second reference signal can be referred to as RSn.

[0252] Unless otherwise specified, the following exemplary description is given with the first reference signal being RSn and the second reference signal being RSc.

[0253] For ease of understanding, the related concepts of events are first explained. An event can be a basis for the terminal device to determine whether to report a beam measurement report. For example, if the event is met, the terminal device reports a beam measurement report to the network device. For another example, if the event is not met, the terminal device does not report a beam measurement report to the network device.

[0254] There are various cases in which the event is met, for example 1, in a case where a measurement value corresponding to the new beam is better than a measurement value of the current beam, the event can be referred to as being met. For example 2, in a case where the measurement value corresponding to the new beam is better than the measurement value of the current beam and exceeds a first threshold value, the event can be referred to as being met. For example 3, in a case where the measurement value corresponding to the new beam is better than the first threshold value, and the number of times of being better than the first threshold value exceeds a second threshold value, the event can be referred to as being met.

[0255] It can be understood that the above several examples of whether the event is met are only examples, and in actual application, there can be other examples, which are not limited here.

[0256] In addition, the event can include at least one instance. For example, in the aforementioned example 1 or example 2, the event includes one instance, and the instance being met can also be referred to as the event being met. For another example, in the aforementioned example 3, the event includes multiple instances, and the number of times of the multiple instances being met exceeding the second threshold value can be referred to as the event being met.

[0257] Optionally, the network device can configure the terminal device with a configuration related to reporting of a beam measurement report, and the terminal device determines reference signals measured by a new beam and a current beam. The new beam can have multiple reference signals corresponding to the transmission time window 1, and the current beam can have at least one reference signal corresponding to the transmission time window 1. The event is that the measurement result of the new beam is better than the measurement result of the current beam by more than a threshold value.

[0258] Further, the network device can configure the terminal device with parameters related to reporting of the event. For example, the number of instances M in which the event is met within a time T, where T represents a preset time period, and M represents an integer greater than or equal to 0. For another example, the threshold value by which the measurement result of the new beam is better than the measurement result of the current beam, and the like. Wherein, T can be the same as or different from the time period occupied by the aforementioned transmission time window.

[0259] Step 502, the terminal device determines a third reference signal and a fourth reference signal.

[0260] After the terminal device receives the multiple first reference signals and the at least one second reference signal, the terminal device determines the third reference signal and the fourth reference signal.

[0261] Specifically, the terminal device determines the third reference signal from the multiple first reference signals, and determines the fourth reference signal from the at least one second reference signal.

[0262] There are multiple cases of the third reference signal and the fourth reference signal in the present application, which are described as follows.

[0263] In the first case, the third reference signal is the latest reference signal among the multiple first reference signals. And / or the fourth reference signal is the latest reference signal among the at least one second reference signal.

[0264] This case can also be understood as that the third reference signal is the latest reference signal among the multiple first reference signals. Or it can be understood as that the third reference signal is the reference signal in the multiple first reference signals that is the latest in time domain. Or it can be understood as that the third reference signal is the reference signal in the multiple first reference signals that is the latest in measurement time.

[0265] In one possible implementation, the number of the at least one second reference signal is 1. That is, the number of the second reference signal in the transmission time window is 1.

[0266] In this mode, since the number of the at least one second reference signal is 1, the second reference signal can be equivalent to the fourth reference signal.

[0267] For example, continuing the example of FIG. 6, the third reference signal and the fourth reference signal are as shown in FIG. 7, i.e., the network device and the terminal device transmit 1 second reference signal and 3 first reference signals in the transmission time window 1. Then the 1 second reference signal in the transmission time window 1 is the fourth reference signal. The third reference signal is the latest first reference signal in the transmission time window 1 in the time domain.

[0268] For example, the third reference signal and the fourth reference signal are as shown in FIG. 8, i.e., the network device and the terminal device transmit 1 second reference signal and 5 first reference signals in the transmission time window 2. Then the 1 second reference signal in the transmission time window 1 is the fourth reference signal. The third reference signal is the latest first reference signal in the transmission time window 1 in the time domain.

[0269] In another possible implementation, the number of the at least one second reference signal is multiple. That is, the number of the second reference signal in the transmission time window is 2.

[0270] In this way, the fourth reference signal can be the latest reference signal among the multiple second reference signals. Similar to the description of the third reference signal, the fourth reference signal is the latest reference signal among the multiple second reference signals. Alternatively, it can be understood that the fourth reference signal is the latest reference signal in the time domain among the multiple second reference signals. Alternatively, it can be understood that the fourth reference signal is the latest reference signal in the measurement time among the multiple second reference signals.

[0271] It can be understood that the third reference signal and / or the fourth reference signal can be determined in combination with other conditions in this way, which is not limited here.

[0272] In the second case, the third reference signal is a reference signal among the multiple first reference signals that is not used to determine whether the event instance is satisfied. And / or the fourth reference signal is a reference signal among the at least one second reference signal that is not used to determine whether the event instance is satisfied.

[0273] This case can also be understood as that the third reference signal is a reference signal among the multiple first reference signals that does not participate in determining whether the event instance is satisfied. Alternatively, it can be understood that the third reference signal and / or the fourth reference signal is only used to determine whether one instance of the event is satisfied.

[0274] It can be understood that if there is only one first reference signal among the multiple first reference signals that is not used to determine whether the event instance is satisfied, the first reference signal can be determined as the third reference signal. If there are more first reference signals among the multiple first reference signals that are not used to determine whether the event instance is satisfied, the third reference signal can also be determined in combination with other conditions, which is not limited here.

[0275] Optionally, the fourth reference signal is a reference signal not participating in judging the event instance from the at least one second reference signal. Correspondingly, if there is only one second reference signal not participating in judging the event instance from the at least one second reference signal, the second reference signal can be determined as the fourth reference signal. If there are more second reference signals not participating in judging the event instance from the at least one second reference signal, the fourth reference signal can also be determined in combination with other conditions, which are not limited here.

[0276] The other conditions can include at least one of the following: the first condition, the fourth condition, etc., which are not limited here.

[0277] Further, if the measurement value corresponding to the third reference signal and the measurement value corresponding to the fourth reference signal are used to judge whether a current instance of the event meets the condition, the measurement value corresponding to the third reference signal and the measurement value corresponding to the fourth reference signal cannot be used to judge whether other instances of the event after the current instance meet the condition.

[0278] For example, the third reference signal and the fourth reference signal are shown in FIG. 9, i.e., the network device and the terminal device transmit 2 second reference signals and 5 first reference signals in the transmission time window 3. The first second reference signal and the second first reference signal are used to judge the event instance, and the second reference signal not participating in judging the event instance from the 2 second reference signals is determined as the fourth reference signal. As can be seen, there are 4 first reference signals not participating in judging the event instance from the 5 first reference signals shown in FIG. 9. The third reference signal can be determined from the 4 first reference signals in combination with other conditions. For example, the first reference signal closest to the fourth reference signal in time domain from the 4 first reference signals can be selected as the third reference signal. For another example, the first reference signal farthest from the fourth reference signal in time domain from the 4 first reference signals can be selected as the third reference signal, etc., which are not limited here.

[0279] It can be understood that the second condition can also be determined in combination with or based on the first condition to determine the third reference signal and the fourth reference signal, i.e., the reference signal not participating in judging whether the event instance meets the condition can also be referred to as a new reference signal.

[0280] The third condition is that multiple comparisons of the third reference signal are regarded as one instance of the event. And / or multiple comparisons of the fourth reference signal are regarded as one instance of the event.

[0281] This kind of situation can be understood as a situation contrary to the second situation described above. That is, the second situation describes judging that the reference signal of an instance of the event is no longer used as the reference signal for judging. The third situation describes that multiple comparisons of the reference signal are regarded as an instance. It can be seen that both the second situation and the third situation can solve the multiple triggering of the event instance, but the solving ideas are different.

[0282] For example, as shown in FIG. 10, it is assumed that the fourth reference signal is compared with the four first reference signals for four times, and the four comparisons are regarded as an instance of the event. That is, the four comparisons only trigger the judgment of one instance. Compared with the case of FIG. 4B described above, this kind of way can reduce the false triggering of the event instance.

[0283] The fourth situation is that the time domain interval between the third reference signal and the fourth reference signal is less than or equal to a preset interval.

[0284] This kind of situation can also be understood as that the third reference signal is the first reference signal that is closer in time domain to the fourth reference signal among the multiple first reference signals. Or it can be understood as that the fourth reference signal is the second reference signal that is closer in time domain to the third reference signal among the at least one second reference signal.

[0285] In one possible implementation manner, the terminal device first determines the fourth reference signal from the at least one second reference signal, and then further determines the first reference signal that is closer in time domain to the fourth reference signal among the multiple first reference signals as the third reference signal.

[0286] The manner in which the terminal device first determines the fourth reference signal can adopt other situations, for example, the multiple situations described above, and the specific implementation is not limited herein.

[0287] In another possible implementation manner, the terminal device first determines the third reference signal from the multiple first reference signals, and then further determines the second reference signal that is closer in time domain to the third reference signal among the at least one second reference signal as the fourth reference signal.

[0288] Similarly, the manner in which the terminal device first determines the third reference signal can adopt other situations, for example, the multiple situations described above, and the specific implementation is not limited herein.

[0289] It should be noted that the above several situations can be combined with each other, and the above several situations are only illustrative, and other manners can also be used in actual application, and the specific implementation is not limited herein.

[0290] In step 503, the terminal device determines whether the third measurement value and the fourth measurement value used for judging the instance of the event meet.

[0291] After the terminal device determines the third reference signal and the fourth reference signal, the terminal device determines whether the instance of the event satisfies the third measurement value and the fourth measurement value used for judgment. The third measurement value includes a measurement value corresponding to the third reference signal, and the fourth measurement value includes a measurement value corresponding to the fourth reference signal.

[0292] The measurement value in the embodiments of the present application can be used to judge the quality of the reference signal. For example, the measurement value can include at least one of the following: reference signal receiving power (RSRP), reference signal receiving quality (RSRP), signal to interference plus noise ratio (SINR), modulation and coding scheme (MCS), channel quality indicator (CQI), and the like.

[0293] The content of the present step is more, and the following several parts (measurement period of measurement value, evaluation period of event, third measurement value and fourth measurement value) are described respectively.

[0294] First part, measurement period of measurement value.

[0295] The measurement period of the measurement value can also be referred to as the measurement period of the reference signal. That is, the measurement period is used to indicate how long the measurement of the reference signal is performed once.

[0296] The applicant considers that the first transmission period of the plurality of first reference signals and the second transmission period of the at least one second reference signal are different, which can cause the number of one type of reference signal to be relatively large and the number of another type of reference signal to be relatively small in a certain transmission time window. Thus, when the instance of the event is subsequently judged based on the two types of reference signals, the terminal device does not know how to compare or is easy to cause multiple comparisons, thereby causing frequent reporting of the terminal device or event false triggering.

[0297] Based on this, the present application proposes a "relaxed measurement" solution. That is, the larger of the transmission periods of the two types of reference signals is taken as the measurement period of the measurement value. That is, the reference signal with the smaller transmission period can not be measured frequently, achieving "relaxed measurement", thereby saving the energy consumption of the terminal device.

[0298] For example, the second transmission period of the at least one second reference signal is greater than the first transmission period of the plurality of first reference signals, and the second transmission period is taken as the measurement period of the plurality of first reference signals.

[0299] For example, the first transmission period of the plurality of first reference signals is greater than the second transmission period of the at least one second reference signal, and the first transmission period is used as the measurement period of the at least one second reference signal.

[0300] For example, the transmission period of the RS n is 20 milliseconds (ms), and the transmission period of the RS c is 80 ms. In this case, the RS n can be measured according to the larger transmission period, i.e., the 80 ms period.

[0301] Optionally, the relaxed measurement can also have certain specific conditions.

[0302] For example, the relaxed measurement condition includes at least one of the following: the reference signal to be relaxed measurement is only associated with a specific event (for example, Event-2 event), the reference signal to be relaxed measurement is not associated with normal period / non-periodic reporting, the terminal device needs to normally measure the reference signal, the type of the reference signal is new beam, and the like.

[0303] Further, the terminal device can further limit the reference signal to be relaxed measurement in the relaxed measurement case:

[0304] For example, the reference signal to be relaxed measurement needs to select the closest one for comparison with the signal for measurement. For example, the terminal device relaxes the measurement of the RS n, and the RS n is compared with the RS c to determine the event. In this case, the terminal device needs to select the closest one of the RS c for measurement (the previous one or the next one) when the measurement is relaxed. The terminal device can not need to measure the RS n in the remaining positions, and the network device can normally schedule data in these positions without the need for scheduling restriction. For example, if the RS n is relaxed measurement, the closest position to the RS c is selected from the four comparison objects of the RS n.

[0305] For example, the reference signal to be relaxed measurement can be predefined or configured by the network device, and the like, which is not limited here.

[0306] In addition, when there are multiple RS n or multiple RS c, how to determine the measurement period of each RS is given below.

[0307] In a possible implementation, the network device further sends a plurality of fifth reference signals to the terminal device. Correspondingly, the terminal device receives the plurality of fifth reference signals sent by the network device. The plurality of fifth reference signals have a third transmission period, and the third measurement value includes a measurement value corresponding to the third reference signal and measurement values of the plurality of fifth reference signals. For the convenience of subsequent description, the plurality of fifth reference signals and the plurality of first reference signals are taken as one type of reference signals, and the at least one second reference signal is taken as another type of reference signal. For example, the fifth reference signal and the first reference signal are two RSn with different transmission periods, the first reference signal is denoted as RSn1, the fifth reference signal is denoted as RSn2, and the second reference signal is RSc.

[0308] In this way, there are various cases of measurement values or measurement periods of reference signals, which are described as follows.

[0309] For the convenience of understanding, the specific determination process of the measurement period is described in combination with the following examples.

[0310] Example 1: The first transmission period of RSn1 is 40 ms, the third transmission period of RSn2 is 80 ms, and the second transmission period of RSc is 20 ms.

[0311] Example 2: The first transmission period of RSn1 is 20 ms, the third transmission period of RSn2 is 80 ms, and the second transmission period of RSc is 40 ms.

[0312] Example 3: The first transmission period of RSn1 is 20 ms, the third transmission period of RSn2 is 40 ms, and the second transmission period of RSc is 80 ms.

[0313] 1. The measurement period of RSn1 is the larger period of the first transmission period and the second transmission period of RSc. The measurement period of RSn2 is the larger period of the third transmission period and the second transmission period of RSc.

[0314] This case can also be understood as that the transmission periods of two Rsn with different transmission periods are compared with the transmission period of RSc respectively, and the larger transmission period is taken as the measurement period of the corresponding RSn.

[0315] For example, continuing with the above example 1, the measurement period of RSn1 is the larger period of the first transmission period and the second transmission period of RSc, which can be represented as Max(40 ms, 20 ms), that is, the measurement period of RSn1 is 40 ms. The measurement period of RSn2 is the larger period of the third transmission period and the second transmission period of RSc, which can be represented as Max(80 ms, 20 ms), that is, the measurement period of RSn2 is 80 ms.

[0316] For example, continuing the above example 1, the measurement period of RSn1 is the larger one of the first transmission period and the second transmission period of RSc, and the measurement period of RSn1 can be represented as Max (40ms, 20ms), i.e., the measurement period of RSn1 is 40ms. Then, the measurement period of RSn2 is the larger one of the third transmission period and the second transmission period of RSc, and the measurement period of RSn1 can be represented as Max (80ms, 40ms), i.e., the measurement period of RSn2 is 80ms.

[0317] For example, continuing the above example 1, the measurement period of RSn1 is the larger one of the first transmission period and the second transmission period of RSc, and the measurement period of RSn1 can be represented as Max (40ms, 20ms), i.e., the measurement period of RSn1 is 40ms. Then, the measurement period of RSn2 is the larger one of the third transmission period and the second transmission period of RSc, and the measurement period of RSn1 can be represented as Max (80ms, 40ms), i.e., the measurement period of RSn2 is 80ms.

[0318] 2. The measurement period of RSc is the larger one of the fourth transmission period and the second transmission period.

[0319] The fourth transmission period includes any one of the following: the largest one of the first transmission period and the third transmission period, the smallest one of the first transmission period and the third transmission period, the average period of the first transmission period and the third transmission period, etc. Hereinafter, the fourth transmission period is exemplarily described as the smallest one of the first transmission period and the third transmission period.

[0320] For example, continuing the above example 1, the fourth transmission period is the smallest one of the first transmission period and the third transmission period, and the fourth transmission period can be represented as Min (40ms, 80ms), i.e., the fourth transmission period is 40ms. Further, the measurement period of RSc is the larger one of the fourth transmission period and the second transmission period, and the measurement period of RSc can be represented as Max (40ms, 20ms), i.e., the measurement period of RSc is 40ms.

[0321] For example, continuing the above example 1, the fourth transmission period is the smallest one of the first transmission period and the third transmission period, and the fourth transmission period can be represented as Min (40ms, 80ms), i.e., the fourth transmission period is 40ms. Further, the measurement period of RSc is the larger one of the fourth transmission period and the second transmission period, and the measurement period of RSc can be represented as Max (40ms, 20ms), i.e., the measurement period of RSc is 40ms.

[0322] For example, continuing the above example 1, the fifth transmission period is the maximum transmission period of the first transmission period and the second transmission period, which can be represented as Max(40ms, 20ms), i.e., the fifth transmission period is 40ms. The sixth transmission period is the maximum transmission period of the first transmission period and the third transmission period, which can be represented as Max(40ms, 80ms), i.e., the sixth transmission period is 80ms. Further, the measurement period of the RSc is the smaller transmission period of the fifth transmission period and the sixth transmission period, which can be represented as Min(40ms, 80ms), i.e., the measurement period of the RSc is 40ms.

[0323] 3. The measurement period of the RSc is the smaller transmission period of the fifth transmission period and the sixth transmission period.

[0324] wherein the fifth transmission period is the maximum transmission period of the first transmission period and the second transmission period, and the sixth transmission period is the maximum transmission period of the first transmission period and the third transmission period.

[0325] Optionally, the smaller transmission period of the fifth transmission period and the sixth transmission period is the measurement period of the second reference signal RSc.

[0326] Further, the measurement period of the RSnl is the larger period of the first transmission period and the measurement period of the RSc. Correspondingly, the measurement period of the RSn2 is the larger period of the third transmission period and the measurement period of the RSc.

[0327] For example, continuing the above example 1, the fifth transmission period is the maximum transmission period of the first transmission period and the second transmission period, which can be represented as Max(40ms, 20ms), i.e., the fifth transmission period is 40ms. The sixth transmission period is the maximum transmission period of the first transmission period and the third transmission period, which can be represented as Max(40ms, 80ms), i.e., the sixth transmission period is 80ms. Further, the measurement period of the RSc is the smaller transmission period of the fifth transmission period and the sixth transmission period, which can be represented as Min(40ms, 80ms), i.e., the measurement period of the RSc is 40ms.

[0328] Further, continuing the above example 1, the measurement period of the RSnl is the larger period of the first transmission period and the measurement period of the RSc, which can be represented as Max(40ms, 40ms), i.e., the measurement period of the RSnl is 40ms. Correspondingly, the measurement period of the RSn2 is the larger period of the third transmission period and the measurement period of the RSc, which can be represented as Max(80ms, 40ms), i.e., the measurement period of the RSn2 is 80ms.

[0329] For example, continuing the above example 2, the fifth transmission period is the maximum of the first transmission period and the second transmission period, which can be expressed as Max (20ms, 40ms), i.e., the fifth transmission period is 40ms. The sixth transmission period is the maximum of the first transmission period and the third transmission period, which can be expressed as Max (20ms, 80ms), i.e., the sixth transmission period is 80ms. Further, the measurement period of RSc is the smaller of the fifth transmission period and the sixth transmission period, which can be expressed as Min (40ms, 80ms), i.e., the measurement period of RSc is 40ms.

[0330] Further, continuing the above example 2, the measurement period of RSn1 is the larger of the first transmission period and the measurement period of RSc, which can be expressed as Max (20ms, 40ms), i.e., the measurement period of RSn1 is 40ms. Correspondingly, the measurement period of RSn2 is the larger of the third transmission period and the measurement period of RSc, which can be expressed as Max (80ms, 40ms), i.e., the measurement period of RSn2 is 80ms.

[0331] For example, continuing the above example 3, the fifth transmission period is the maximum of the first transmission period and the second transmission period, which can be expressed as Max (20ms, 80ms), i.e., the fifth transmission period is 80ms. The sixth transmission period is the maximum of the first transmission period and the third transmission period, which can be expressed as Max (20ms, 40ms), i.e., the sixth transmission period is 40ms. Further, the measurement period of RSc is the smaller of the fifth transmission period and the sixth transmission period, which can be expressed as Min (80ms, 40ms), i.e., the measurement period of RSc is 80ms.

[0332] Further, continuing the above example 3, the measurement period of RSn1 is the larger of the first transmission period and the measurement period of RSc, which can be expressed as Max (20ms, 80ms), i.e., the measurement period of RSn1 is 80ms. Correspondingly, the measurement period of RSn2 is the larger of the third transmission period and the measurement period of RSc, which can be expressed as Max (40ms, 80ms), i.e., the measurement period of RSn2 is 80ms.

[0333] It can be understood that the above-mentioned several ways are only examples, and other ways can also be used in actual applications, which are not limited here.

[0334] In another possible implementation manner, the network device further sends a plurality of sixth reference signals to the terminal device. Correspondingly, the terminal device receives the plurality of sixth reference signals sent by the network device. A period of the plurality of sixth reference signals is a seventh transmission period, and the fourth measurement value includes a measurement value corresponding to the fourth reference signal and measurement values corresponding to the plurality of sixth reference signals. An evaluation period of the event or a measurement period of the measurement value is a larger transmission period between the eighth transmission period and the first transmission period.

[0335] The eighth transmission period includes any one of the following: a largest transmission period between the second transmission period and the seventh transmission period, a smallest transmission period between the second transmission period and the seventh transmission period, an average period of the second transmission period and the seventh transmission period, and the like.

[0336] It should be noted that the transmission periods described in the specification are more (that is, the fifth transmission period and the sixth transmission period have been occupied in the foregoing), in order to distinguish, the concepts of the seventh transmission period and the eighth transmission period are introduced here. Since the concepts of the seventh transmission period and the eighth transmission period are not introduced in the claims, the seventh transmission period here is equivalent to the fifth transmission period in the claims, and the eighth transmission period here is equivalent to the sixth transmission period in the claims.

[0337] Optionally, the determination manner of the measurement period and / or whether to trigger the relaxed measurement can be determined according to an indication of the network device. For example, the network device sends first information to the terminal device, and the first information is used to indicate a larger transmission period between the first transmission period of the first reference signal and transmission periods of the at least one second reference signal as the measurement period of the measurement value.

[0338] The second part is the evaluation period of the event.

[0339] The evaluation period of the event can be understood as how long to determine whether the event meets.

[0340] Optionally, the evaluation period of the event can also use the same method of the measurement period in the first part, and details are not repeated here.

[0341] For example, the evaluation period of the event is a larger transmission period between the first transmission period of the plurality of first reference signals and the second transmission period of the at least one second reference signal.

[0342] For another example, in addition, when there are a plurality of RSn or a plurality of RSc, how to determine the measurement period of each RS, and the determination process of the evaluation period can be similar to the determination of the measurement period in the first part, and details are not repeated here.

[0343] Optionally, the determination manner of the evaluation period can be determined according to an indication of the network device. For example, the network device sends indication information to the terminal device, and the indication information is used to indicate that the larger one of the first transmission period of the first reference signal and the transmission period of the at least one second reference signal is the evaluation period of the event.

[0344] The third part, the third measurement value and the fourth measurement value.

[0345] The third measurement value and the fourth measurement value in this step have multiple cases, which are described as follows.

[0346] The first case, the third measurement value is the measurement value of the third reference signal. And / or the fourth measurement value is the measurement value of the fourth reference signal.

[0347] In this case, the third measurement value can be described with reference to the multiple cases of the third reference signal. The fourth measurement value can be described with reference to the multiple cases of the fourth reference signal.

[0348] For example, the third reference signal is the latest first reference signal in the multiple first reference signals. It can be understood that the third measurement value is the measurement value corresponding to the latest first reference signal in the multiple first reference signals. For another example, the fourth reference signal is the latest second reference signal in the at least one second reference signal. It can be understood that the fourth measurement value is the measurement value corresponding to the latest second reference signal in the at least one second reference signal.

[0349] For another example, the multiple comparisons of the third reference signal are regarded as one instance of the event. It can be understood that the multiple comparisons of the third measurement value are regarded as one instance of the event. For another example, the multiple comparisons of the fourth reference signal are regarded as one instance of the event. It can be understood that the multiple comparisons of the fourth measurement value are regarded as one instance of the event.

[0350] For another example, the third reference signal is only used to judge whether one instance of the event meets the requirement. It can be understood that the third measurement value is only used to judge whether one instance of the event meets the requirement. For another example, the fourth reference signal is only used to judge whether one instance of the event meets the requirement. It can be understood that the fourth measurement value is only used to judge whether one instance of the event meets the requirement.

[0351] For another example, the time domain interval between the third reference signal and the fourth reference signal is less than a preset interval. It can be understood that the time domain symbol interval between the third reference signal corresponding to the third measurement value and the fourth reference signal corresponding to the fourth measurement value is less than a preset interval.

[0352] In the second case, the third measurement value comprises the measurement value of the third reference signal and the measurement value of another reference signal, and / or the fourth measurement value comprises the measurement value of the fourth reference signal and the measurement value of another reference signal.

[0353] Optionally, the terminal device further receives a plurality of fifth reference signals transmitted by the network device, and the third measurement value comprises the measurement value of the third reference signal and the measurement values of the plurality of fifth reference signals.

[0354] Optionally, the terminal device further receives a plurality of sixth reference signals transmitted by the network device, and the fourth measurement value comprises the measurement value of the fourth reference signal and the measurement values of the plurality of sixth reference signals.

[0355] In the third case, the third measurement value is the filtered value of the plurality of first reference signals, and / or the fourth measurement value is the filtered value of the at least one second reference signal.

[0356] This case can also be understood as how to determine the third measurement value when the terminal device does not perform relaxed measurement.

[0357] Optionally, for the reference signal with a shorter period, the terminal device still performs measurement according to the normal period. However, when judging whether the event instance satisfies, the reference signal with a shorter period is filtered, and the filtered value is used to judge whether the event instance satisfies.

[0358] For example, the first transmission period of the first reference signal is shorter than the transmission period of the second reference signal, and the plurality of first reference signals in the transmission time window can be filtered and used to judge whether the event instance satisfies the fourth measurement value.

[0359] For example, the first transmission period of the first reference signal is longer than the transmission period of the second reference signal, and the plurality of second reference signals in the transmission time window can be filtered and used to judge whether the event instance satisfies the third measurement value.

[0360] The filtering in the embodiments of the present application can be understood as a process of changing a plurality of measurement values into one measurement value, which can be average, weighted average, etc., and the specific process is not limited here.

[0361] The number of filtered reference signals can be determined according to the first transmission period and the second transmission period. For example, the number of filtered reference signals is the ratio of the longer transmission period of the two types of reference signals to the shorter transmission period of the two types of reference signals.

[0362] For example, as shown in FIG. 11, the terminal device normally measures the RSns with shorter periods, and obtains the measurement values of the plurality of RSns before obtaining the measurement value of the RSc. For example, the transmission period of the RSns is 80 ms, and the transmission period of the RSc is 20 ms. Then, for the RSc, the measurement values of 4 (i.e., 4 = 80 / 20) reference signals are used for filtering. The plurality of measurement values of the RSc are filtered, and the filtered value is used for the instance determination of the event with the fourth measurement value of the RSns. That is, as shown in the ellipse in FIG. 11, the terminal device obtains the measurement values of 4 RSns, and then obtains the third measurement value by filtering the 4 RSns. Then, the third measurement value is used for the instance determination of the event with the fourth measurement value.

[0363] It can be understood that the foregoing measurement value cases are only examples, and in actual applications, other manners can also be used, which are not limited herein.

[0364] Optionally, whether the terminal device uses filtering for the instance determination of the event and / or the specific filtering manner can be determined according to the indication of the network device. For example, the network device sends second information to the terminal device, and the second information is used to indicate that the filtered value of the measurement values corresponding to the plurality of first reference signals and the fourth measurement value of the second reference signal are used for determining whether the instance of the event meets the threshold.

[0365] In step 504, the terminal device sends a measurement report to the network device. This step is optional.

[0366] Optionally, after the terminal device determines the third measurement value and the fourth measurement value, the terminal device can determine whether the instance of the event meets the threshold based on the third measurement value and the fourth measurement value. When the number of instances of the event meeting the threshold exceeds a threshold, the terminal device can send a measurement report to the network device. Correspondingly, the network device receives the measurement report sent by the terminal device.

[0367] Optionally, the event is the number M of instances of the event meeting the threshold within a time T, where T is used to represent a preset time period, and M is used to represent an integer greater than or equal to 0. For another example, the event is that the measurement result of the new beam is better than the measurement result of the current beam by a threshold, and the like. Wherein, T can be the same as or different from the time period occupied by the foregoing transmission time window.

[0368] Further, the measurement report is used for the network device to switch the beam. For example, after the network device receives the measurement report reported by the terminal device, it is found that a new RSn is more suitable for the terminal device, and then the transmission beam is updated.

[0369] For example, if the terminal device determines that the number of times that the event instance meets the event within a period of time exceeds a threshold value, the terminal device sends a measurement report to the network device. The network device receives the measurement report sent by the terminal device.

[0370] In the embodiments of the present application, the content included in the measurement report is not specifically limited. For example, the measurement report can include the measurement value of the better reference signal in the judgment event, for example, if the number of times that RSn is better than RSc within a period of T exceeds a threshold value, the measurement report can carry the measurement value of RSn and other parameters, which are not limited here.

[0371] It should be noted that the different cases of the different parts can be combined arbitrarily, and the specific details are not limited here.

[0372] Based on the above scheme, on the one hand, the measurement value of the two types of reference signals used to judge whether an instance of the event meets the event needs to be the latest measurement value. Under this idea, the latest measurement value can refer to the latest measurement value of any one of the two types of reference signals, or the measurement value of the two types of reference signals needs to be the latest measurement value. On the other hand, the measurement value of the two types of reference signals used to judge whether the last instance of the event meets the event cannot be used for the judgment of the previous event instance. Or cannot be used for the judgment of the subsequent event instance. Or cannot be used for the judgment of the previous or subsequent event instance. On the other hand, one measurement value is used for one event instance judgment. Or it can be understood that the evaluation of the corresponding event instance based on the same measurement value is recorded as an instance of the event. On the other hand, the evaluation period of the judgment of whether an instance of the event meets the event is the maximum of the two transmission periods of the two types of reference signals. On the other hand, the larger transmission period of the two types of reference signals is used as the measurement period of the measurement value. This idea can also be understood as measurement relaxation. That is, the measurement is not based on the reference signal, and the periodic measurement is performed according to the above larger transmission period. The above several aspects propose how the terminal device selects the measurement results of the new beam and the current beam to determine the number of times that the event instance meets the event, to avoid the false triggering of the event. That is, by defining how the terminal device selects the measurement value or the reference signal when judging whether the event instance meets the event, the false triggering of the event due to the judgment of the channel instantaneous state is avoided, thereby avoiding the false judgment of the network device on the beam state of the terminal device. On this basis, by defining the relaxation of the reference signal measurement of the terminal device, the power saving effect is achieved.

[0373] The communication method in the embodiments of the present application is described above, and the communication device in the embodiments of the present application is described below. Referring to FIG. 12, one embodiment of the communication device 1200 in the embodiments of the present application can implement the functions of the terminal device in the above method embodiments, and thus can also implement the beneficial effects possessed by the above method embodiments. In the embodiments of the present application, the communication device 1200 can be a communication device, or an integrated circuit or element inside the communication device, such as a chip. The communication device 1200 includes a transceiver 1201. Alternatively, the communication device 1200 includes the transceiver 1201 and a processing unit 1202.

[0374] In a possible implementation manner, the communication device 1200 is the terminal device in the embodiments shown in FIGS. 1A to 11, and in this case, the functions of each unit are as follows.

[0375] The transceiver 1201 is configured to receive a plurality of first reference signals and at least one second reference signal.

[0376] The processing unit 1202 is configured to determine a third reference signal and a fourth reference signal.

[0377] The processing unit 1202 is further configured to determine whether an instance of the event satisfies the third measurement value and the fourth measurement value used for judgment.

[0378] The third reference signal is the latest reference signal in the plurality of first reference signals, and the fourth reference signal belongs to the at least one second reference signal. The third measurement value includes a measurement value corresponding to the third reference signal, and the fourth measurement value includes a measurement value corresponding to the fourth reference signal.

[0379] Optionally, the transmission period of the plurality of first reference signals is different from the transmission period of the at least one second reference signal.

[0380] Optionally, the number of the at least one second reference signal is a plurality, and the fourth measurement value is a measurement value corresponding to the latest second reference signal in the plurality of second reference signals.

[0381] Optionally, the third measurement value and the fourth measurement value are used only for determining whether one instance of the event satisfies.

[0382] Optionally, a plurality of comparisons of the third measurement value are regarded as one instance of the event, or a plurality of comparisons of the fourth measurement value are regarded as one instance of the event.

[0383] Optionally, the evaluation period of the event is the larger transmission period between the first transmission period of the plurality of first reference signals and the second transmission period of the at least one second reference signal.

[0384] Optionally, the number of times that one instance of the event in the evaluation period satisfies the condition is less than or equal to 1.

[0385] Optionally, the second transmission period of the at least one second reference signal is greater than the first transmission period of the plurality of first reference signals, and the second transmission period is used as the measurement period of the plurality of first reference signals.

[0386] Optionally, the transceiver 1201 is further configured to receive a plurality of fifth reference signals, a period of the plurality of fifth reference signals is a third transmission period, the third measurement value includes a measurement value corresponding to the third reference signal and a measurement value of the plurality of fifth reference signals, and an evaluation period of the event or a measurement period of the measurement value is a larger transmission period between a fourth transmission period and the second transmission period, the fourth transmission period includes any one of: a largest transmission period between the first transmission period and the third transmission period, a smallest transmission period between the first transmission period and the third transmission period, and an average period of the first transmission period and the third transmission period.

[0387] Optionally, the transceiver 1201 is further configured to receive a plurality of sixth reference signals, a period of the plurality of sixth reference signals is a fifth transmission period, the fourth measurement value includes a measurement value corresponding to the fourth reference signal and a measurement value corresponding to the plurality of sixth reference signals, and an evaluation period of the event or a measurement period of the measurement value is a larger transmission period between a sixth transmission period and the first transmission period; the sixth transmission period includes any one of: a largest transmission period between the second transmission period and the fifth transmission period, a smallest transmission period between the second transmission period and the fifth transmission period, and an average period of the second transmission period and the fifth transmission period.

[0388] Optionally, a time domain symbol interval between the third reference signal corresponding to the third measurement value and the fourth reference signal corresponding to the fourth measurement value is less than a preset interval. For example, it can be the closest in time domain interval.

[0389] Optionally, the at least one second reference signal is a reference signal configured by the network device, and the plurality of first reference signals include at least one of: a reference signal associated with an activated transmission configuration indication (TCI) of a physical downlink channel, a quasi co-location (QCL) source reference signal of the activated TCI of the physical downlink channel, a synchronization signal and physical broadcast channel block (SSB) having a QCL relationship with the activated TCI of the physical downlink channel, and a reference signal associated with a currently used beam / TCI of the terminal device; or,

[0390] The plurality of first reference signals are reference signals configured by the network device, and the at least one second reference signal includes at least one of: a reference signal associated with an activated TCI of a physical downlink channel, a QCL source reference signal of the activated TCI of the physical downlink channel, an SSB having a QCL relationship with the activated TCI of the physical downlink channel, and a reference signal associated with a currently used beam / TCI of the terminal device.

[0391] Optionally, the transceiver 1201 is further configured to report the measurement report when the instance is met, and the measurement report is used for switching the beam.

[0392] Optionally, the transceiver 1201 is further configured to receive first information, and the first information is used for indicating a larger transmission period of a first transmission period of the first reference signal and a transmission period of the at least one second reference signal as a measurement period of the measurement value and / or an evaluation period of the event.

[0393] Optionally, a quantity of the at least one second reference signal is less than a quantity of the at least one first reference signal, and the quantity of the fourth measurement values is multiple. The filtered value of the multiple fourth measurement values and the third measurement value are used for determining whether the instance of the event is met.

[0394] Optionally, the transceiver 1201 is further configured to receive second information, and the second information is used for indicating that the filtered value of the multiple fourth measurement values and the third measurement value are used for determining whether the instance of the event is met.

[0395] Optionally, the determination condition of the event being met includes at least one of the following: a difference between the measurement value of the third reference signal and the measurement value of the fourth reference signal is greater than or equal to a first threshold value, and a first quantity is greater than or equal to a second threshold value; and the first quantity is a quantity that the difference between the measurement value of the third reference signal and the measurement value of the fourth reference signal is greater than or equal to a third threshold value.

[0396] In the embodiment, the operations performed by the units in the communication apparatus are similar to the description of the terminal device in the foregoing embodiments shown in FIG. 1A to FIG. 11, which will not be described here.

[0397] In the embodiment, after the transceiver 1201 receives the multiple first reference signals, the processing unit 1202 can determine the third measurement value corresponding to the latest third reference signal in the multiple first reference signals and the fourth measurement value of the second reference signal, and use the third measurement value and the fourth measurement value for determining whether the instance of the event is met. That is, by limiting the “latest”, the multiple determination of the instance of the event caused by the multiple measurement values of the multiple reference signals in the prior art can be reduced, and the false triggering of the event can be reduced.

[0398] In another possible implementation manner, the communication apparatus 1200 is the network device in the foregoing embodiments shown in FIG. 1A to FIG. 11, and functions of the units are as follows:

[0399] The transceiver 1201 is configured to send the multiple first reference signals and the at least one second reference signal.

[0400] The transceiver 1201 is further configured to receive the measurement report.

[0401] The multiple first reference signals are used to determine a third reference signal, and the at least one second reference signal is used to determine a fourth reference signal. The third reference signal is the latest reference signal in the multiple first reference signals, and the fourth reference signal belongs to the at least one second reference signal. The measurement report is determined based on a third measurement value and a fourth measurement value. The third measurement value is a measurement value corresponding to the third reference signal, and the fourth measurement value includes a measurement value corresponding to the fourth reference signal.

[0402] Optionally, a transmission period of the multiple first reference signals is different from a transmission period of the at least one second reference signal.

[0403] Optionally, the number of the at least one second reference signal is multiple, and the fourth measurement value is a measurement value corresponding to a latest second reference signal in the multiple second reference signals.

[0404] Optionally, the third measurement value and the fourth measurement value are used only for judging whether one instance of the event meets the requirement.

[0405] Optionally, multiple comparisons of the third measurement value are regarded as one instance of the event, or multiple comparisons of the fourth measurement value are regarded as one instance of the event.

[0406] Optionally, an evaluation period of the event is a larger transmission period between a first transmission period of the multiple first reference signals and a second transmission period of the at least one second reference signal.

[0407] Optionally, the number of times that one instance of the event meets the requirement in the evaluation period is less than or equal to 1.

[0408] Optionally, the second transmission period of the at least one second reference signal is greater than the first transmission period of the multiple first reference signals, and the second transmission period is used as a measurement period of the multiple first reference signals.

[0409] Optionally, the transceiver 1201 is further configured to send multiple fifth reference signals, a period of the multiple fifth reference signals is a third transmission period, the third measurement value corresponds to the multiple fifth reference signals and the multiple first reference signals, and an evaluation period of the event is a larger transmission period between a fourth transmission period and the second transmission period.

[0410] The fourth transmission period includes any one of the following: a largest transmission period between the first transmission period and the third transmission period, a smallest transmission period between the first transmission period and the third transmission period, and an average period of the first transmission period and the third transmission period.

[0411] Optionally, the transceiver 1201 is further configured to send a plurality of sixth reference signals, a period of the plurality of sixth reference signals is a fifth transmission period, the fourth measurement value comprises a measurement value corresponding to the fourth reference signal and measurement values corresponding to the plurality of sixth reference signals, and the evaluation period of the event or the measurement period of the measurement value is a larger transmission period between the sixth transmission period and the first transmission period.

[0412] The sixth transmission period comprises any one of the following: a largest transmission period between the second transmission period and the fifth transmission period, a smallest transmission period between the second transmission period and the fifth transmission period, and an average period of the second transmission period and the fifth transmission period.

[0413] Optionally, a time domain symbol interval between the third reference signal corresponding to the third measurement value and the fourth reference signal corresponding to the fourth measurement value is less than a preset interval.

[0414] Optionally, the plurality of second reference signals are reference signals configured by the network device, and the first reference signal comprises at least one of the following: a reference signal associated with an activated transmission configuration indication (TCI) of a physical downlink channel, a quasi co-location (QCL) source reference signal of an activated TCI of the physical downlink channel, a synchronization signal and a physical broadcast channel block (SSB) having a QCL relationship with the activated TCI of the physical downlink channel, and a reference signal associated with a currently used beam / TCI of the terminal device; or,

[0415] The plurality of first reference signals are reference signals configured by the network device, and the second reference signal comprises at least one of the following: a reference signal having a QCL relationship with an activated TCI of the physical downlink channel, and a reference signal associated with a currently used beam / TCI of the terminal device.

[0416] Optionally, the transceiver 1201 is further configured to send first information, and the first information is used to indicate a larger transmission period between the first transmission period of the first reference signal and a transmission period of at least one second reference signal as a measurement period of a measurement value and / or an evaluation period of an event.

[0417] Optionally, a number of the at least one second reference signal is less than a number of the at least one first reference signal, and a number of the fourth measurement values is a plurality. The filtered values of the plurality of fourth measurement values and the third measurement value are used to determine whether a one-time instance of the event meets.

[0418] Optionally, the transceiver 1201 is further configured to send second information, and the second information is used to indicate that the filtered values of the plurality of fourth measurement values and the third measurement value are used to determine whether a one-time instance of the event meets.

[0419] Optionally, the judging condition that the event is satisfied comprises at least one of the following: a difference between the measurement value of the third reference signal and the measurement value of the fourth reference signal is greater than or equal to a first threshold value, and the first number is greater than or equal to a second threshold value; the first number is a number of times that the difference between the measurement value of the third reference signal and the measurement value of the fourth reference signal is greater than or equal to a third threshold value.

[0420] Optionally, the processing unit 1202 is configured to switch the beam based on the measurement report.

[0421] In this embodiment, the operations performed by the units in the communication apparatus are similar to the description of the network device in the foregoing embodiments shown in FIGS. 1A-11, and will not be described here again.

[0422] In this embodiment, the third measurement value corresponding to the latest third reference signal among the plurality of first reference signals transmitted by the transceiver unit 1201 and the fourth measurement value of the second reference signal are used to judge whether the instance of the event is satisfied. That is, by limiting to the “latest”, the number of times of judging the instance of the event caused by the plurality of measurement values of the plurality of reference signals in the prior art can be reduced, and the false triggering of the event can be reduced.

[0423] Referring to FIG. 13, another schematic structural diagram of a communication apparatus 1300 provided by the present application is shown. The communication apparatus 1300 includes a logic circuit 1301 and an input / output interface 1302. The communication apparatus 1300 can be a chip or an integrated circuit.

[0424] The transceiver unit 1201 shown in FIG. 12 can be a communication interface, which can be the input / output interface 1302 in FIG. 13. The input / output interface 1302 can include an input interface and an output interface. Alternatively, the communication interface can also be a transceiver circuit, which can include an input interface circuit and an output interface circuit. The processing unit 1202 shown in FIG. 12 can be the logic circuit 1301 in FIG. 13.

[0425] Optionally, in the case where the communication apparatus is the terminal device in the foregoing embodiments, the logic circuit 1301 is configured to measure the first data. The input / output interface 1302 is configured to at least one of the following: receive the first data, transmit the feedback information (e.g., the first feedback information, the second feedback information), and receive the second data.

[0426] Optionally, in the case where the communication apparatus is the network device in the foregoing embodiments, the logic circuit 1301 is configured to adjust the parameter used by the PDSCH according to the first feedback information. The input / output interface 1302 is configured to at least one of the following: transmit the first data, receive the feedback information (e.g., the first feedback information, the second feedback information), and transmit the second data.

[0427] The logic circuit 1301 and the input and output interface 1302 can also perform other steps and achieve corresponding beneficial effects performed by the terminal device or the network device in any embodiment, which will not be repeated here.

[0428] Optionally, the logic circuit 1301 can be a processing device, and the functions of the processing device can be partially or entirely implemented by software.

[0429] Optionally, the processing device can include a memory and a processor, wherein the memory is configured to store a computer program, and the processor is configured to read and execute the computer program stored in the memory to perform the corresponding processing and / or steps in any one of the method embodiments.

[0430] Optionally, the processing device can only include the processor. The memory for storing the computer program is located outside the processing device, and the processor is connected with the memory through a circuit / wire to read and execute the computer program stored in the memory. The memory and the processor can be integrated together or can be physically independent of each other.

[0431] Optionally, the processing device can be one or more chips or one or more integrated circuits. For example, the processing device can be one or more field-programmable gate arrays (FPGA), application specific integrated circuits (ASIC), system on chips (SoC), central processor units (CPU), network processors (NP), digital signal processors (DSP), micro controller units (MCU), programmable logic devices (PLD) or other integrated chips, or any combination of the above chips or processors.

[0432] Please refer to FIG. 14, the communication device 1400 involved in the above embodiments provided by the embodiments of the present application, and the communication device 1400 can be specifically the communication device as the terminal device in the above embodiments.

[0433] Optionally, the communication device 1400 can include but is not limited to at least one processor 1401 and a communication port 1402.

[0434] The transceiving unit 1201 shown in FIG. 12 can be a communication interface, which can be a communication port 1402 in FIG. 14, and the communication port 1402 can include an input interface and an output interface. Alternatively, the communication port 1402 can also be a transceiving circuit, which can include an input interface circuit and an output interface circuit.

[0435] Further, the apparatus can further include at least one of a memory 1403, a bus, and in the embodiments of the present application, the at least one processor 1401 is configured to control and process the actions of the communication apparatus 1400.

[0436] In addition, the processor 1401 can be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array, or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It can implement or execute the various exemplary logical blocks, modules, and circuits described in connection with the disclosure. The processor can also be a combination of computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like. Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, apparatus, and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0437] It should be noted that the communication apparatus 1400 shown in FIG. 14 can be specifically used to implement the steps implemented by the terminal device in the foregoing method embodiments, and achieve the corresponding technical effects of the terminal device. The specific implementation of the communication apparatus shown in FIG. 14 can refer to the description in the foregoing method embodiments, which will not be described here.

[0438] Please refer to FIG. 15, which is a structural schematic diagram of a communication apparatus 1500 involved in the foregoing embodiments provided by the embodiments of the present application, and the communication apparatus 1500 can be specifically the communication apparatus as the network device in the foregoing embodiments, wherein the structure of the communication apparatus can refer to the structure shown in FIG. 15.

[0439] The communication device 1500 comprises at least one processor 1511 and at least one network interface 1514. Further optionally, the communication device further comprises at least one memory 1512, at least one transceiver 1513 and one or more antennas 1515. The processor 1511, the memory 1512, the transceiver 1513 and the network interface 1514 are connected, for example, through a bus, which may, in embodiments of the present application, comprise various types of interfaces, transmission lines or buses, etc., and the present embodiments do not limit the same. The antenna 1515 is connected to the transceiver 1513. The network interface 1514 is configured to enable the communication device to communicate with other communication devices through a communication link. For example, the network interface 1514 can comprise a network interface between the communication device and a core network device, such as an S1 interface, and the network interface can comprise a network interface between the communication device and other communication devices (such as other network devices or core network devices), such as an X2 or Xn interface.

[0440] The transceiver unit 1201 shown in FIG. 12 can be a communication interface, which can be the network interface 1514 in FIG. 15, and the network interface 1514 can comprise an input interface and an output interface. Alternatively, the network interface 1514 can also be a transceiver circuit, which can comprise an input interface circuit and an output interface circuit.

[0441] The processor 1511 is mainly configured to process communication protocols and communication data, and control the whole communication device, execute software programs, process data of the software programs, for example, to support the communication device to perform the actions described in the embodiments. The communication device can comprise a baseband processor and a central processor, the baseband processor is mainly configured to process communication protocols and communication data, and the central processor is mainly configured to control the whole communication device, execute software programs, process data of the software programs. The processor 1511 in FIG. 15 can integrate the functions of the baseband processor and the central processor, and those skilled in the art can understand that the baseband processor and the central processor can also be independent processors interconnected through a bus. Those skilled in the art can understand that the communication device can comprise a plurality of baseband processors to adapt to different network modes, and the communication device can comprise a plurality of central processors to enhance the processing capability, and various components of the communication 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 function of processing communication protocols and communication data can be built in the processor, or stored in the memory in the form of software programs, and the processor executes the software programs to realize the baseband processing function.

[0442] The memory is mainly used for storing software programs and data. The memory 1512 can exist independently and be connected to the processor 1511. Alternatively, the memory 1512 can be integrated with the processor 1511, for example, integrated in a chip. The memory 1512 can store program codes for implementing the technical solutions of the embodiments of the present application and be controlled to execute by the processor 1511. Various computer programs executed can also be regarded as a driver of the processor 1511.

[0443] FIG. 15 only shows one memory and one processor. In actual communication 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. The memory can be a storage element on the same chip as the processor, i.e., an on-chip storage element, or an independent storage element, and the embodiments of the present application do not limit this.

[0444] The transceiver 1513 can be used to support the reception or transmission of radio frequency signals between the communication device and the terminal. The transceiver 1513 can be connected to the antenna 1515. The transceiver 1513 includes a transmitter Tx and a receiver Rx. Specifically, one or more antennas 1515 can receive radio frequency signals, the receiver Rx of the transceiver 1513 is used to receive the radio frequency signals from the antenna and convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and provide the digital baseband signals or digital intermediate frequency signals to the processor 1511 for further processing of the digital baseband signals or digital intermediate frequency signals by the processor 1511, such as demodulation processing and decoding processing. In addition, the transmitter Tx in the transceiver 1513 is also used to receive modulated digital baseband signals or digital intermediate frequency signals from the processor 1511, and convert the modulated digital baseband signals or digital intermediate frequency signals into radio frequency signals, and transmit the radio frequency signals through one or more antennas 1515. Specifically, the receiver Rx can selectively perform one or more levels of down-mixing and analog-to-digital conversion to obtain digital baseband signals or digital intermediate frequency signals, and the order of the down-mixing and analog-to-digital conversion can be adjustable. The transmitter Tx can selectively perform one or more levels of up-mixing and digital-to-analog conversion on the modulated digital baseband signals or digital intermediate frequency signals to obtain radio frequency signals, and the order of the up-mixing and digital-to-analog conversion can be adjustable. The digital baseband signals and the digital intermediate frequency signals can be collectively referred to as digital signals.

[0445] The transceiver 1513 can also be referred to as a transceiving unit, a transceiver, a transceiving device, etc. Optionally, a device for realizing a receiving function in the transceiving unit can be regarded as a receiving unit, and a device for realizing a sending function in the transceiving unit can be regarded as a sending unit, that is, the transceiving unit includes the receiving unit and the sending unit, the receiving unit can also be referred to as a receiver, an input port, a receiving circuit, etc., and the sending unit can be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0446] It should be noted that the communication apparatus 1500 shown in FIG. 15 can be specifically used to implement the steps implemented by the network device in the foregoing method embodiments, and achieve the corresponding technical effects of the network device. The specific implementation of the communication apparatus 1500 shown in FIG. 15 can be referred to the description in the foregoing method embodiments, which will not be repeated here.

[0447] The embodiments of the present application also provide a computer readable storage medium for storing one or more computer execution instructions, when the computer execution instructions are executed by a processor, the processor executes the method of the possible implementation manner of the terminal device or the network device as described in the foregoing embodiments.

[0448] The embodiments of the present application also provide a computer program product (or computer program), when the computer program product is executed by the processor, the processor executes the method of the possible implementation manner of the terminal device or the network device.

[0449] The embodiments of the present application also provide a chip system, which includes at least one processor for supporting the communication apparatus to implement the functions involved in the possible implementation manner of the communication apparatus. Optionally, the chip system further includes an interface circuit for providing program instructions and / or data for the at least one processor. In a possible design, the chip system can further include a memory for storing necessary program instructions and data of the communication apparatus. The chip system can be composed of a chip, or can include a chip and other discrete devices, and the communication apparatus can be the terminal device or the network device in the foregoing method embodiments.

[0450] The embodiments of the present application also provide a communication system, which includes the terminal device and the network device in any of the foregoing embodiments.

[0451] For example, in the case of the method provided by the present application applied to the open RAN architecture, the network device configures events and thresholds such as time length T, number of times M, and threshold for the terminal device, which can be generated at the CU. In some possible implementations, the CU can be divided into CU-CP and CU-UP, and the action can be generated at the CU-UP or the CU-CP, or can be performed on the near-RT RIC, and the physical layer function is completed through the DU and / or RU, and is sent to the terminal device.

[0452] The embodiments of the present application support the configuration related to the terminal device event reporting under the open RAN architecture, which can be performed on the CU / O-CU-CP / near-RT RIC. By defining how to select the measurement result when the terminal device judges whether the event is met, the new measurement result generated by the terminal device is specified, which avoids the false triggering of event reporting due to the multiple event meeting caused by the channel transient state judgment, thereby avoiding the false judgment of the UE beam state by the network device. On this basis, by defining the relaxation of the reference signal measurement by the terminal device, the power saving effect is achieved.

[0453] 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 described device embodiments are merely schematic. The division of the units is merely a logical function division. There can be another division manner for the 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 mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0454] The units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiments.

[0455] In addition, each functional unit in the embodiments of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit.

[0456] When the communication device is a chip applied to a terminal, the terminal chip realizes the functions of the terminal in the method embodiments. The terminal chip receives information from the base station, which can be understood as the information being received by other modules (such as a radio frequency module or an antenna) in the terminal first, and then sent to the terminal chip by these modules. The terminal chip sends information to the base station, which can be understood as the information being sent to other modules (such as a radio frequency module or an antenna) in the terminal first, and then sent to the base station by these modules.

[0457] When the communication device is a chip applied to a base station, the base station chip implements the functions of the base station in the method embodiments. The base station chip receives information from a terminal, which can be understood as that the information is received by other modules (such as a radio frequency module or an antenna) in the base station first, and then sent to the base station chip by the modules. The base station chip sends information to the terminal, which can be understood as that the information is sent to other modules (such as a radio frequency module or an antenna) in the base station first, and then sent to the terminal by the modules.

[0458] It can be understood that the processor in the embodiments of the present application can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor can be a microprocessor or any conventional processor.

[0459] The method steps in the embodiments of the present application can be implemented in hardware, or in software instructions executable by a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, a register, a hard disk, a mobile hard disk, a CD-ROM or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium. The storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a base station or a terminal. The processor and the storage medium can also exist as discrete components in the base station or the terminal.

[0460] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer programs or instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are performed. The computer can be a general purpose computer, a special purpose computer, a computer network, a network device, a user equipment or other programmable apparatus. The computer programs or instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer programs or instructions can be transferred from one website site, computer, server or data center to another website site, computer, server or data center through wired or wireless manner. The computer readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center and the like integrated with one or more available media. The available media can be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; an optical medium, such as a digital video disc; a semiconductor medium, such as a solid state disk. The computer readable storage medium can be a volatile or non-volatile storage medium, or can include both volatile and non-volatile storage media.

[0461] In various embodiments of the present application, the terms and / or descriptions of different embodiments are consistent and can be referred to each other if there is no special description and logical conflict, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0462] It can be understood that various numerical numbers involved in the embodiments of the present application are only used for differentiation for convenience of description, and are not used to limit the scope of the embodiments of the present application. The size of the serial number of the above processes does not mean the execution order, and the execution order of the processes should be determined according to their functions and inherent logic.

Claims

1. A communication method characterized by comprising: The method comprises: receiving a plurality of first reference signals and at least one second reference signal; determining a third reference signal and a fourth reference signal, the third reference signal being the latest reference signal in the plurality of first reference signals, and the fourth reference signal belonging to the at least one second reference signal; determining a third measurement value and a fourth measurement value for judging whether an instance of an event meets a criterion, the third measurement value comprising a measurement value corresponding to the third reference signal, and the fourth measurement value comprising a measurement value corresponding to the fourth reference signal.

2. The method of claim 1, wherein, The transmission period of the plurality of first reference signals is different from the transmission period of the at least one second reference signal.

3. The method according to claim 1 or 2, characterized in that, The number of the at least one second reference signal is a plurality, and the fourth measurement value is a measurement value corresponding to the latest second reference signal in the plurality of second reference signals.

4. The method according to claim 1 or 2, characterized in that, The third measurement value and the fourth measurement value are only used for judging whether an instance of the event meets the criterion.

5. The method according to any one of claims 1 to 4, characterized in that, A plurality of comparisons of the third measurement value are regarded as an instance of the event, or a plurality of comparisons of the fourth measurement value are regarded as an instance of the event.

6. The method according to any one of claims 1 to 5, characterized in that, The evaluation period of the event is the larger one of a first transmission period of the plurality of first reference signals and a second transmission period of the at least one second reference signal.

7. The method of claim 6, wherein, The number of instances of the event meeting the criterion in the evaluation period is less than or equal to 1.

8. The method according to any one of claims 1 to 7, characterized in that, The second transmission period of the at least one second reference signal is greater than the first transmission period of the plurality of first reference signals, and the second transmission period is used as a measurement period of the plurality of first reference signals.

9. The method according to any one of claims 6 to 8, characterized in that, The method further comprises: receiving a plurality of fifth reference signals, the period of the plurality of fifth reference signals being a third transmission period, the third measurement value comprising a measurement value corresponding to the third reference signal and a measurement value of the plurality of fifth reference signals, and the evaluation period of the event or the measurement period of the measurement value being the larger one of a fourth transmission period and the second transmission period; the fourth transmission period comprising any one of the following: the largest one of the first transmission period and the third transmission period, the smallest one of the first transmission period and the third transmission period, and the average period of the first transmission period and the third transmission period.

10. The method according to any one of claims 6 to 8, characterized in that, The method further comprises: receiving a plurality of sixth reference signals, the period of the plurality of sixth reference signals being a fifth transmission period, the fourth measurement value comprising a measurement value corresponding to the fourth reference signal and a measurement value of the plurality of sixth reference signals, and the evaluation period of the event or the measurement period of the measurement value being the larger one of a sixth transmission period and the first transmission period; the sixth transmission period comprising any one of the following: the largest one of the second transmission period and the fifth transmission period, the smallest one of the second transmission period and the fifth transmission period, and the average period of the second transmission period and the fifth transmission period.

11. The method according to any one of claims 1 to 10, characterized in that, The time domain symbol interval of the third reference signal corresponding to the third measurement value and the fourth reference signal corresponding to the fourth measurement value is less than a preset interval.

12. The method according to any one of claims 1 to 11, characterized in that, The at least one second reference signal is a reference signal configured by the network device, and the plurality of first reference signals include at least one of the following: a reference signal associated with an active transmission configuration indication (TCI) of a physical downlink channel, a reference signal of a quasi co-location (QCL) source of the active TCI of the physical downlink channel, a synchronization signal and physical broadcast channel block (SSB) having a QCL relationship with the active TCI of the physical downlink channel, and a reference signal associated with a currently used beam / TCI of the terminal device. The plurality of first reference signals are reference signals configured by the network device, and the at least one second reference signal includes at least one of the following: a reference signal associated with an active TCI of a physical downlink channel, a reference signal of a QCL source of the active TCI of the physical downlink channel, an SSB having a QCL relationship with the active TCI of the physical downlink channel, and a reference signal associated with a currently used beam / TCI of the terminal device.

13. The method according to any one of claims 1 to 12, characterized in that, The method further includes: In a case where the instance is met, a measurement report is reported, and the measurement report is used for switching a beam.

14. A communication method, comprising: The method includes: transmitting a plurality of first reference signals and at least one second reference signal; the plurality of first reference signals are used to determine a third reference signal, and the at least one second reference signal is used to determine a fourth reference signal; the third reference signal is a latest reference signal in the plurality of first reference signals, and the fourth reference signal belongs to the at least one second reference signal; receiving a measurement report, which is determined based on a third measurement value and a fourth measurement value; the third measurement value is a measurement value corresponding to the third reference signal, and the fourth measurement value includes a measurement value corresponding to the fourth reference signal.

15. The method of claim 14, wherein, A transmission period of the plurality of first reference signals is different from a transmission period of the at least one second reference signal.

16. The method according to claim 14 or 15, characterized in that The number of the at least one second reference signal is a plurality, and the fourth measurement value is a measurement value corresponding to a latest second reference signal in the plurality of second reference signals.

17. The method of claim 14 or 15, wherein, The third measurement value and the fourth measurement value are only used to determine whether an instance of the event is met.

18. The method according to any one of claims 14 to 17, characterized in that, A plurality of comparisons of the third measurement value are regarded as an instance of the event, or a plurality of comparisons of the fourth measurement value are regarded as an instance of the event.

19. The method according to any one of claims 14 to 18, characterized in that, An evaluation period of the event is a larger transmission period between a first transmission period of the plurality of first reference signals and a second transmission period of the at least one second reference signal.

20. The method of claim 19, wherein, A number of times that an instance of the event is met in the evaluation period is less than or equal to 1.

21. The method of any one of claims 14-19, wherein, The second transmission period of the at least one second reference signal is greater than the first transmission period of the plurality of first reference signals, and the second transmission period is used as a measurement period of the plurality of first reference signals.

22. The method of any one of claims 19-21, wherein, The method further includes: transmitting a plurality of fifth reference signals, a period of the plurality of fifth reference signals being a third transmission period, the third measurement value corresponding to the plurality of fifth reference signals and the plurality of first reference signals, and an evaluation period of the event being a larger transmission period between a fourth transmission period and the second transmission period; The fourth transmission period comprises any one of the following: a maximum transmission period of the first transmission period and the third transmission period, a minimum transmission period of the first transmission period and the third transmission period, an average period of the first transmission period and the third transmission period.

23. The method of any one of claims 19-21, wherein, The method further comprises: The method further comprises: The method further comprises:

24. The method of any one of claims 14-23, wherein, The sixth transmission period comprises any one of the following: a maximum transmission period of the second transmission period and the fifth transmission period, a minimum transmission period of the second transmission period and the fifth transmission period, an average period of the second transmission period and the fifth transmission period.

25. The method of any one of claims 14 to 24, wherein, The time domain symbol interval between the third reference signal corresponding to the third measurement value and the fourth reference signal corresponding to the fourth measurement value is less than a preset interval. The plurality of second reference signals are reference signals configured by the network device, and the first reference signal comprises at least one of the following: a reference signal associated with an activated transmission configuration indication (TCI) of a physical downlink channel, a quasi co-location (QCL) source reference signal of an activated TCI of a physical downlink channel, a synchronization signal and a physical broadcast channel block (SSB) having a QCL relationship with an activated TCI of a physical downlink channel, and a reference signal associated with a beam / TCI currently used by the terminal device; or 26. A communications device, characterized by The plurality of first reference signals are reference signals configured by the network device, and the second reference signal comprises at least one of the following: a reference signal having a QCL relationship with an activated TCI of a physical downlink channel, and a reference signal associated with a beam / TCI currently used by the terminal device.

27. A communications device, characterized by The computer program product comprises a computer program or instructions, and the computer program or instructions are executed by the communication device to implement the method of any one of claims 1 to 13 or the method of any one of claims 14 to 25.

28. The communication apparatus according to claim 27, wherein, The communication device is a chip or a chip system.

29. A computer-readable storage medium, characterized in that, The computer program product comprises a computer program or instructions, and the computer program or instructions are executed by the communication device to implement the method of any one of claims 1 to 13 or the method of any one of claims 14 to 25.

30. A computer program product, characterised in that, The computer program product comprises a computer program or instructions, and the computer program or instructions are executed by the communication device to implement the method of any one of claims 1 to 13 or the method of any one of claims 14 to 25.

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