Measurement method and related device and system

Abstract

The invention provides a measurement method and a related device and system. In the method, a network device sends a plurality of reference signals on a plurality of reference signal resources, the plurality of reference signal resources belong to the same reference signal resource group, the plurality of reference signals on the plurality of reference signal resources correspond to a port group, and the plurality of reference signal resources correspond to a plurality of CCs; and the terminal performs channel measurement based on the plurality of received reference signals to obtain measurement results corresponding to the plurality of CCs, and reports the measurement results corresponding to the plurality of CCs to the network equipment. Therefore, the network equipment can obtain the CSI of a plurality of CCs under the same beam, which is beneficial for the network equipment to schedule the plurality of CCs, thereby improving the performance of the whole network and improving the terminal experience.

Description

Technical Field

[0001] The present application relates to the field of wireless communications, and in particular to a measurement method and related devices and systems. Background Art

[0002] With the development of wireless communication technology, large-scale array antennas are gradually being used in communication equipment such as base stations and terminals to combat the path loss caused by the increase in frequency bands and improve coverage capabilities. Communication equipment can use beamforming (BF) technology to limit the energy of transmitted signals to a certain beam direction, thereby increasing signal reception efficiency, expanding the transmission range of wireless signals, and reducing signal interference, thereby achieving higher communication efficiency and obtaining higher network capacity.

[0003] Beamforming technology can be divided into: digital beamforming (DBF), analog beamforming (ABF) and hybrid beamforming (HBF). Digital beamforming can be achieved by adjusting the amplitude and / or phase of the signal in the digital domain; analog beamforming can be achieved mainly by using a phase shifter in the analog domain to adjust the phase of the signal. Hybrid beamforming can be understood as a combination of digital beamforming and analog beamforming, which can be achieved by processing in both the digital and analog domains.

[0004] When using analog beamforming or hybrid beamforming, the network device can only schedule one beam at the same time, that is, it schedules different beams in time division. For example, the network device can send a reference signal through one beam on multiple component carriers (CCs) at one time, and can send a reference signal through another beam on the multiple CCs at another time. When the terminal performs channel measurement and feedback, it usually feedbacks the reference signal with the strongest signal received on each CC. Therefore, the beam with the strongest signal reported by the terminal for different CCs may be different. In other words, each beam scheduled by the network device may not be able to obtain the channel state information (CSI) on each CC in the above-mentioned multiple CCs, and thus cannot schedule the multiple CCs at the same time. Similarly, the network device cannot serve terminals on multiple CCs at the same time. Therefore, the performance of the entire network is poor. Summary of the invention

[0005] The present application provides a measurement method and related devices and systems in order to provide more comprehensive CSI for resource scheduling, so that when network equipment schedules different beams at different times, it can schedule multiple CCs and improve the performance of the entire network.

[0006] In a first aspect, a measurement method is provided, which can be performed by a communication device, which can be a terminal, or a component configured in the terminal (such as a chip, a chip system, a processor, etc.), or a logic module or software capable of implementing all or part of the functions of the communication device. For ease of understanding and explanation, the method is described below using a terminal as an example.

[0007] Exemplarily, the method includes: receiving a reference signal on multiple reference signal resources, each reference signal resource in the reference signal resource group corresponds to a CC among multiple CCs in the frequency domain; performing channel measurement based on the reference signal to obtain measurement results corresponding to the multiple CCs; and sending the measurement results corresponding to the multiple CCs.

[0008] Among the multiple reference signal resources, each reference signal resource can be used to transmit a reference signal, so the terminal can receive multiple reference signals on the multiple reference signal resources and can perform channel measurement based on the multiple reference signals. Unless otherwise specified herein, the reference signal can be understood as a whole without limiting the number of reference signals.

[0009] In the present application, for the convenience of distinction and description, the multiple reference signal resources may be classified into one reference signal resource group, or in other words, the multiple reference signal resources belong to one reference signal resource group, and each reference signal resource in the reference signal resource group corresponds to one CC in the multiple CCs in the frequency domain, that is, each reference signal resource in the reference signal resource group belongs to one CC in the frequency domain, or in other words, comes from one CC. In other words, the multiple reference signal resources in the reference signal resource group may correspond to multiple CCs, or in other words, the multiple reference signal resources in the reference signal resource group come from different CCs. One possible scenario is that each CC corresponds to one reference signal resource in the reference signal resource group, or in other words, multiple CCs correspond one-to-one to multiple reference signal resources in the reference signal resource group, or in other words, different reference signal resources in the reference signal resource group correspond to different CCs. Another possible scenario is that each CC corresponds to multiple reference signal resources in the reference signal resource group. It is not difficult to see that the reference signal resource group is configured for multiple CCs, so the reference signal resource group can be said to be configured across CCs.

[0010] The network device can preconfigure one or more reference signal resource groups for the terminal through signaling, each reference signal resource group includes multiple reference signal resources corresponding to multiple CCs. The method illustrated above only describes the process executed by the terminal using one reference signal resource group as an example, but should not constitute any limitation to this application.

[0011] In another implementation, the method includes: receiving reference signals on multiple reference signal resources, the multiple reference signal resources belong to one or more reference signal resource groups, and the multiple reference signal resources included in each reference signal resource group correspond to multiple CCs; performing channel measurement based on the reference signals received on the multiple reference signal resources of each reference signal resource group to obtain measurement results corresponding to each reference signal resource group; and sending the measurement results corresponding to each reference signal resource group.

[0012] The terminal may report a measurement result based on the reference signals received on multiple reference signal resources in each reference signal resource group, or may report a measurement result based on the reference signals received on multiple reference signal resources in multiple reference signal resource groups. This application does not limit this.

[0013] It can be understood that, since the multiple reference signal resources in each reference signal resource group correspond to multiple CCs, the measurement result corresponding to each reference signal resource group is also the measurement result corresponding to the multiple CCs.

[0014] In addition, performing channel measurement based on the received reference signal may also be referred to as measuring the received reference signal.

[0015] Based on the above technical solution, by configuring one or more reference signal resource groups for multiple CCs, the reference signal can be transmitted through the resources in the one or more reference signal resource groups, and the terminal can perform channel measurement and feedback based on the reference signal on each reference signal resource in the one or more reference signal resource groups. Therefore, each time the network device sends a reference signal through the reference signal resource group, it can obtain the measurement result corresponding to each CC in the multiple CCs, and can provide more comprehensive CSI for resource scheduling, which is beneficial to improving the performance of the entire network. Even if the network device can only schedule one beam at the same time, it can schedule the same beam for multiple CCs that have obtained CSI, which is beneficial to improving the terminal experience. In addition, since the same beam can be scheduled for multiple CCs, resources on different CCs can also be used at different times, so that limited spectrum resources are fully utilized, which is beneficial to improving resource utilization.

[0016] In combination with the first aspect, in some possible implementations of the first aspect, each of the multiple reference signals transmitted through the multiple reference signal resources in a reference signal resource group corresponds to a port group. In other words, one reference signal corresponds to one port group, that is, one reference signal is sent through one port group.

[0017] In the present application, a reference signal can be sent through a port group, so a reference signal can be said to correspond to a port group. A port group can include multiple ports, and these multiple ports correspond to a transmission method, or a transmission mode, or a transmission beam. Therefore, a reference signal can be said to correspond to a transmission method, a transmission mode, or a transmission beam. Among them, the transmission method represents digital weighting (or digital weighting component) and / or analog weighting, that is, different transmission methods can correspond to different digital weights, or different analog weights, or a combination of different digital weights and different analog weights (or, transmission spatial filtering, or, spatial filtering); or that is, the same transmission method corresponds to the same digital weights, or the same analog weights, or a combination of the same digital weights and the same analog weights (or, transmission spatial filtering, or, spatial filtering).

[0018] In the present application, a reference signal resource group includes multiple reference signal resources. Multiple reference signals can be transmitted through multiple reference signal resources in a reference signal resource group, and the multiple reference signals can be sent through the same port group, so the multiple reference signals can be said to correspond to the same port group; or multiple reference signals can be sent through the same transmission method, so the multiple reference signals can be said to correspond to the same transmission method or transmission mode.

[0019] Since multiple ports in a port group have a transmission method or transmission mode, the intensity of the reference signal sent out in space is concentrated in a certain direction. Therefore, the reference signal sent by a port group can also be understood as a reference signal transmitted through a beam (for example, an analog beam or spatial filtering).

[0020] Since the reference signals transmitted by multiple reference signal resources in the same reference signal resource group correspond to the same port group, it can also be said that the reference signal resource group corresponds to the same port group (or the same transmission mode).

[0021] In combination with the first aspect, in some possible implementations of the first aspect, the method further includes: receiving first information, where the first information is used to indicate multiple reference signal resources in each reference signal resource group of one or more reference signal resource groups.

[0022] That is, the first information may indicate multiple reference signal resources included in each reference signal resource group. It is understandable that when the network device configures a reference signal resource group for the terminal, the first information is used to indicate multiple reference signal resources in the reference signal resource group.

[0023] For the indication of multiple reference signal resources in each reference signal resource group, a possible design of the first information is that the first information includes: indexes (index) of multiple CCs and an identifier (identifier, ID) of the reference signal resource corresponding to each CC in a reference signal resource group.

[0024] That is, the first information explicitly indicates the identifier of the reference signal resource corresponding to each CC in a reference signal resource group. Each CC and its corresponding reference signal resource can be regarded as a pairing relationship, so it can also be said that the first information includes an indication of the pairing relationship between multiple CCs and multiple reference signal resources.

[0025] It should be understood that the first information includes the indexes of multiple CCs and the identifier of the reference signal resource corresponding to each CC in a reference signal resource group, and can also be replaced by the first information being information carrying the indexes of the multiple CCs and the identifier of the reference signal resource corresponding to each CC in a reference signal resource group; or, the first information indicates the reference signal resource corresponding to the multiple CCs and each CC in a reference signal resource group; or, the first information is the indexes of the multiple CCs and the identifier of the reference signal resource corresponding to each CC in a reference signal resource group; or, the first information indicates the pairing relationship between the multiple CCs and the multiple reference signal resources; or, the first information is the pairing relationship between the multiple CCs and the multiple reference signal resources. This application does not limit this.

[0026] For the indication of multiple reference signal resources in each reference signal resource group, another possible design of the first information is that the first information includes: configuration information of each reference signal resource in the multiple reference signal resources, and the configuration information of each reference signal resource includes the group identifier of the reference signal resource group. In other words, the first information includes the configuration information of each reference signal resource in the multiple reference signal resources, and the configuration information of each reference signal resource includes the group identifier of the reference signal resource group to which it belongs, and the reference signal resources with the same group identifier belong to one reference signal resource group.

[0027] That is to say, the network device can indicate multiple reference signal resources in each reference signal resource group by indicating the reference signal resource group to which each reference signal resource belongs. Therefore, the terminal can determine which reference signal resources belong to a reference signal resource group based on the group identifier indicated in the configuration information of each reference signal resource. Reference signal resources with the same group identifier belong to one reference signal resource group, and reference signal resources with different group identifiers belong to different reference signal resource groups. The network device does not need to indicate the IDs of the multiple reference signal resources included and the indexes of their corresponding CCs for each reference signal resource group, resulting in less signaling overhead.

[0028] It should be understood that the first information includes the configuration information of each reference signal resource in the multiple reference signal resources, and it can also be replaced by the first information being the information carrying the configuration information of each reference signal resource in the multiple reference signal resources; or, the first information indicates the configuration information of each reference signal resource in the multiple reference signal resources; or, the first information is the configuration information of the multiple reference signal resources.

[0029] For the indication of multiple reference signal resources in each reference signal resource group, another possible design of the first information is that the first information includes: configuration information of the multiple CCs, and the configuration information of each CC in the multiple CCs includes an identifier of the reference signal resource configured for each CC.

[0030] It should be understood that the first information includes configuration information of multiple CCs, and it can also be replaced by the first information being information carrying the configuration information of the multiple CCs; or, the first information indicates the configuration information of the multiple CCs; or, the first information is the configuration information of the multiple CCs.

[0031] Since the configuration information of each CC includes the identifier of the reference signal resource configured for each CC, the reference signal resources included in each reference signal resource group may be determined based on some preset rules.

[0032] Optionally, the multiple reference signal resources in the reference signal resource group satisfy one or more of multiple preset rules, and the multiple rules include: having the same identifier; having the same time domain resources; or having the same order in the configuration information of the corresponding multiple CCs.

[0033] In other words, the multiple reference signal resources in the reference signal resource group satisfy one or more of the following: the multiple reference signal resources have the same identifier; the multiple reference signal resources have the same time domain resources; or the multiple reference signal resources are arranged in the same order in the configuration information of the CCs to which they correspond.

[0034] It should be noted that the reference signal resources are configured for each CC, and the identifier of the reference signal resources is unified on one CC, not on multiple CCs. In other words, the reference signal resources with different identifiers on the same CC correspond to different resources in the time domain and / or frequency domain; the reference signal resources with the same identifier on the same CC have the same resources in the time domain and frequency domain; there may be reference signal resources with the same identifier on different CCs, but the reference signal resources with the same identifier on different CCs do not necessarily correspond to the same resources in the time domain and / or frequency domain.

[0035] Therefore, when multiple reference signal resources in a reference signal resource group have the same identifier, it does not mean that the resources corresponding to the multiple reference signal resources in the time domain and the frequency domain are the same. Since the multiple reference signal resources come from multiple CCs, the resources corresponding to the multiple reference signal resources in the time domain and / or the frequency domain are not necessarily the same.

[0036] When multiple reference signal resources have the same time domain resources, that is, the multiple reference signal resources correspond to the same position in the time domain, that is, when the network device sends a reference signal on the multiple reference signal resources in the reference signal resource group, the sending time of the reference signal is the same, or, when the terminal receives a reference signal on the multiple reference signal resources in the reference signal resource group, the receiving time of the reference signal is the same.

[0037] In some cases, reference signal resources with the same identifier on different CCs correspond to the same position in the time domain. In this case, multiple signal resources in the reference signal resource group may simultaneously satisfy the requirement of having the same identifier and the same time domain resource.

[0038] The multiple reference signal resources in the reference signal resource group may also be reference signal resources in the same order among the reference signal resources configured for multiple CCs. The order mentioned here means that when one or more reference signal resources are configured for a CC through configuration information, the position of each signal resource in the configuration information may be defined according to a preset direction, and the preset direction may be: from the first to the last (or from the front to the back), or from the last to the first (or from the back to the front). The same order means that when one or more reference signal resources are configured for multiple CCs respectively through the configuration information of multiple CCs, the multiple reference signal resources in the same reference signal resource group have the same position in the configuration information of multiple CCs, for example, according to the direction from the first to a certain direction, the multiple reference signal resources in the same reference signal resource group have the same order in the configuration information of multiple CCs.

[0039] In some cases, reference signal resources with the same identifier on different CCs have the same position in the configuration information of multiple CCs. In this case, the multiple signal resources in the reference signal resource group can simultaneously meet the following requirements: have the same identifier and have the same order in the configuration information of multiple CCs.

[0040] In some cases, the reference signal resources with the same order in the configuration information of multiple CCs also have the same position in the time domain. In this case, the multiple signal resources in the reference signal resource group can simultaneously meet the following requirements: having the same time domain resources and having the same order in the configuration information of multiple CCs.

[0041] In some cases, the reference signal resources with the same order in the configuration information of multiple CCs have the same identifier and the same configuration in the time domain. In this case, the multiple reference signal resources in the reference signal resource group can simultaneously meet the following requirements: have the same identifier and the same time domain resources, and have the same order in the configuration information of multiple CCs.

[0042] Among the multiple rules listed above, which one or more of the multiple reference signal resources in each reference signal resource group specifically meet may be predefined by the protocol or configured by the network device, and this application does not limit this. This is like the network device implicitly indicating the multiple reference signal resources in each reference signal resource group through the first information for the configuration of the reference signal resources of each CC, thereby saving signaling overhead.

[0043] In the various possible designs of the above-mentioned first information, optionally, the first information is carried in signaling for configuring non-zero power (none-zero power, NZP) channel state information (channel state information, CSI) reference signal resources (NZP CSI-RS resource).

[0044] The signaling is, for example, a radio resource control (RRC) message. The first information may be, for example, an information element "parameters in NZP CSI-RS resource (NZP-CSI-RS-Resource)" in the RRC message.

[0045] In the various possible designs of the above-mentioned first information, optionally, the first information is carried in the signaling used to configure the non-zero power channel state information reference signal resource set NZP-CSI-RS-ResourceSet.

[0046] The signaling is, for example, an RRC message, and the first information may be, for example, a parameter in an information element “NZP CSI-RS-ResourceSet” in the RRC message.

[0047] Optionally, the method further includes: receiving second information, where the second information is used to indicate rules satisfied by multiple reference signal resources in each reference signal resource group.

[0048] That is to say, the second information can be used to indicate which one or more of the multiple reference signal resources in each reference signal resource group satisfy the multiple rules. The multiple rules may include, for example: having the same identifier; having the same time domain resources; or having the same order in the corresponding configuration information of the multiple CCs. Based on the identifier of the reference signal resource configured for each CC in the multiple CCs in the above-mentioned first information, and the rules satisfied by the multiple reference signal resources in each reference signal resource group indicated by the second information, the reference signal resources in each reference signal resource group of one or more reference signal resource groups configured for the multiple CCs can be derived.

[0049] In combination with the first aspect, in some possible implementations of the first aspect, the method further includes: receiving third information, where the third information is used to indicate the number of reference signal resource groups configured for the multiple CCs.

[0050] In the present application, the number of reference signal resource groups configured for multiple CCs is the number of cross-CC port groups configured for multiple CCs. Therefore, it can also be said that the third information is used to indicate the number of cross-CC port groups configured for the multiple CCs.

[0051] In combination with the first aspect, in some possible implementations of the first aspect, before receiving a reference signal on multiple reference signal resources in a reference signal resource group, or in other words, before receiving a reference signal on multiple reference signal resources, the method also includes: receiving fourth information, wherein the fourth information is used to indicate whether a reference signal resource group is configured for the multiple CCs.

[0052] Correspondingly, the receiving of reference signals on multiple reference signal resources in the reference signal resources includes: when the fourth information indicates that reference signal resource groups are configured for the multiple CCs, receiving the reference signals on the multiple reference signal resources in the reference signal resource group. Alternatively, the receiving of reference signals on multiple reference signal resources includes: when the fourth information indicates that reference signal resource groups are configured for the multiple CCs, receiving the reference signals on the multiple reference signal resources.

[0053] That is to say, before the terminal receives the reference signal, it can determine whether the network device has configured a reference signal resource group for multiple CCs based on the fourth information. If the reference signal resource group is configured, the method provided by the present application can be used to receive the reference signal, and perform channel measurement and feedback; if the reference signal resource group is not configured, the reference signal can be received according to the existing technology, and channel measurement and feedback can be performed. Therefore, the network device can consider whether to configure a reference signal resource group for multiple CCs according to demand, and then obtain the required channel measurement results, thereby providing a basis for resource scheduling, so that resource scheduling can be performed more flexibly.

[0054] In combination with the first aspect, in some possible implementation manners of the first aspect, sending the measurement results corresponding to the multiple CCs includes: sending the corresponding measurement results on the multiple CCs respectively.

[0055] The terminal may send a measurement result on each of the multiple CCs, and the measurement result sent on each CC is obtained based on the reference signal measurement received on the CC. In other words, the measurement result corresponding to each CC is transmitted by the reporting resource on each CC. This implementation method is applicable to the case where the uplink bandwidth and the downlink bandwidth are symmetrical, that is, the terminal supports multiple CCs in both uplink and downlink.

[0056] In combination with the first aspect, in some possible implementation manners of the first aspect, sending the measurement results corresponding to the multiple CCs includes: sending the measurement results corresponding to the multiple CCs on one CC among the multiple CCs.

[0057] The terminal can also feed back measurement results across CCs. The measurement results corresponding to the above multiple CCs can be transmitted through the reporting resources on one of the CCs. This implementation method can be applicable to the case where the uplink bandwidth and downlink bandwidth are asymmetric, that is, the terminal supports multiple CCs in the downlink and only one CC in the uplink.

[0058] One implementation manner is that the terminal sends the measurement results corresponding to the multiple CCs on one CC among the multiple CCs, that is, the measurement results corresponding to each CC are sent respectively with CC as the granularity; another implementation manner is that the terminal sends the measurement results corresponding to the multiple CCs as a whole, for example, reporting the absolute value of the measurement result of one CC, reporting the differential value of the measurement results of other CCs, etc. This application is not limited to this.

[0059] By providing the above two implementation methods of sending measurement results corresponding to multiple CCs, different implementation methods can be provided for different allocation situations of uplink and downlink bandwidths, so that the network device can obtain comprehensive CSI under different bandwidth allocation situations.

[0060] On the second aspect, a measurement method is provided, which can be performed by a communication device, which may be a network device, or a component configured in the network device (such as a chip, a chip system, a processor, etc.), or a logic module or software that can implement all or part of the functions of the communication device.

[0061] It should be understood that the method provided in the second aspect corresponds to the first aspect, and the description of the same or corresponding content can refer to the relevant description in the first aspect and will not be repeated here.

[0062] Exemplarily, the method includes: sending a reference signal on a plurality of reference signal resources, each of the plurality of reference signal resources corresponding to a CC among a plurality of CCs in the frequency domain; and receiving measurement results corresponding to the plurality of CCs.

[0063] Among them, the correspondence between the multiple reference signal resources and the multiple CCs has been described in detail in the first aspect, and please refer to the relevant description above, which will not be repeated here.

[0064] In this application, for the convenience of distinction and description, the multiple reference signal resources may be grouped into one reference signal resource group, or in other words, the multiple reference signal resources belong to one reference signal resource group. The network device may pre-configure one or more reference signal resource groups for the terminal through signaling, each reference signal resource group including multiple reference signal resources corresponding to multiple CCs. The method exemplified above only describes the process performed by the network device for one reference signal resource group, but shall not constitute any limitation to this application.

[0065] In another implementation, the method includes: receiving reference signals on multiple reference signal resources, the multiple reference signal resources belong to one or more reference signal resource groups, each reference signal resource group includes multiple reference signal resources corresponding to multiple CCs; receiving measurement results corresponding to the one or more reference signal resource groups.

[0066] It can be understood that, since the multiple reference signal resources in each reference signal resource group correspond to multiple CCs, the measurement result corresponding to each reference signal resource group is also the measurement result corresponding to the multiple CCs.

[0067] Based on the above technical solution, by configuring one or more reference signal resource groups for multiple CCs, the reference signal can be transmitted through the resources in the one or more reference signal resource groups, and the terminal can perform channel measurement and feedback based on the reference signal on each reference signal resource in the one or more reference signal resource groups. Therefore, each time the network device sends a reference signal through the reference signal resource group, it can obtain the CSI corresponding to each CC in the multiple CCs, and can provide more comprehensive CSI for resource scheduling. In this way, even if the network device can only schedule one beam at the same time, it can schedule the same beam for multiple CCs that have obtained CSI, which is beneficial to improving the terminal experience. In addition, since the same beam can be scheduled for multiple CCs, resources on different CCs can also be used at different times, so that limited spectrum resources are fully utilized, which is beneficial to improving resource utilization.

[0068] In conjunction with the second aspect, in some possible implementations of the second aspect, each of the multiple reference signals transmitted through the multiple reference signal resources in a reference signal resource group corresponds to a port group. In other words, one reference signal corresponds to one port group, that is, one reference signal is sent through one port group.

[0069] The relationship between the port group and the reference signal and the reference signal resource group has been described in detail in the first aspect above. Please refer to the relevant description in the previous text and will not be repeated here.

[0070] Since the network device can schedule beams in a time-division manner, the network device can send reference signals through different beams at different times.

[0071] In combination with the second aspect, in some possible implementations of the second aspect, the method further includes: sending first information, where the first information is used to indicate multiple reference signal resources in each reference signal resource group of one or more reference signal resource groups.

[0072] That is, the first information may indicate multiple reference signal resources included in each reference signal resource group. It is understandable that when the network device configures a reference signal resource group for the terminal, the first information is used to indicate multiple reference signal resources in the reference signal resource group.

[0073] For the indication of multiple reference signal resources in each reference signal resource group, a possible design of the first information is that the first information includes: indexes of multiple CCs and an identifier of a reference signal resource corresponding to each CC in a reference signal resource group.

[0074] That is, the first information explicitly indicates the identifier of the reference signal resource corresponding to each CC in a reference signal resource group. Each CC and its corresponding reference signal resource can be regarded as a pairing relationship, so it can also be said that the first information includes an indication of the pairing relationship between multiple CCs and multiple reference signal resources.

[0075] For the indication of multiple reference signal resources in each reference signal resource group, another possible design of the first information is that the first information includes: configuration information of each reference signal resource in the multiple reference signal resources, and the configuration information of each reference signal resource includes the group identifier of the reference signal resource group. In other words, the first information includes the configuration information of each reference signal resource in the multiple reference signal resources, and the configuration information of each reference signal resource includes the group identifier of the reference signal resource group to which it belongs, and the reference signal resources with the same group identifier belong to one reference signal resource group.

[0076] That is to say, the network device can indicate multiple reference signal resources in each reference signal resource group by indicating the reference signal resource group to which each reference signal resource belongs. Therefore, the terminal can determine which reference signal resources belong to a reference signal resource group based on the group identifier indicated in the configuration information of each reference signal resource. Reference signal resources with the same group identifier belong to one reference signal resource group, and reference signal resources with different group identifiers belong to different reference signal resource groups. The network device does not need to indicate the IDs of the multiple reference signal resources included and the indexes of their corresponding CCs for each reference signal resource group, resulting in less signaling overhead.

[0077] For the indication of multiple reference signal resources in each reference signal resource group, another possible design of the first information is that the first information includes: configuration information of the above-mentioned multiple CCs, the configuration information of each CC in the multiple CCs includes an identifier of the reference signal resources configured for each CC; the multiple reference signal resources in the reference signal resource group satisfy one or more of the preset multiple rules, and the multiple rules include: having the same identifier; having the same time domain resources; or having the same order in the corresponding configuration information of the multiple CCs.

[0078] The above-mentioned rules have been explained in detail in the first aspect above. Please refer to the relevant description above and no further details will be given.

[0079] Among the multiple rules listed above, which one or more of the multiple reference signal resources in each reference signal resource group specifically meet may be predefined by the protocol or configured by the network device, and this application does not limit this. This is like the network device implicitly indicating the multiple reference signal resources in each reference signal resource group through the first information for the configuration of the reference signal resources of each CC, thereby saving signaling overhead.

[0080] The several possible designs of the first information have been described in detail in the first aspect. Please refer to the relevant description of the first aspect and no further details will be given.

[0081] Among the various possible designs of the above-mentioned first information, optionally, the first information is carried in the signaling used to configure NZP CSI-RS resources.

[0082] The signaling is, for example, an RRC message. The first information may be, for example, a parameter in an information element "NZP-CSI-RS-Resource" in the RRC message.

[0083] In the various possible designs of the above-mentioned first information, optionally, the first information is carried in the signaling used to configure the NZP-CSI-RS resource set.

[0084] The signaling is, for example, an RRC message, and the first information may be, for example, a parameter in an information element “NZP-CSI-RS-ResourceSet” in the RRC message.

[0085] Optionally, the method further includes: sending second information, where the second information is used to indicate rules satisfied by multiple reference signal resources in each reference signal resource group.

[0086] The first information and the second information may implicitly indicate a plurality of reference signal resources in each reference signal resource group.

[0087] In combination with the second aspect, in some possible implementations of the second aspect, the method further includes: sending third information, where the third information is used to indicate the number of reference signal resource groups configured for the multiple CCs.

[0088] In the present application, the number of reference signal resource groups configured for multiple CCs is the number of cross-CC port groups configured for multiple CCs. Therefore, it can also be said that the third information is used to indicate the number of cross-CC port groups configured for the multiple CCs.

[0089] In combination with the second aspect, in some possible implementations of the second aspect, before sending a reference signal on multiple reference signal resources in a reference signal resource group, or in other words, before sending a reference signal on multiple reference signal resources, the method also includes: sending fourth information, wherein the fourth information is used to indicate whether a reference signal resource group is configured for the multiple CCs.

[0090] Correspondingly, the sending of reference signals on multiple reference signal resources in the reference signal resources includes: when the fourth information indicates that reference signal resource groups are configured for the multiple CCs, sending the reference signals on the multiple reference signal resources in the reference signal resource group. Alternatively, the sending of reference signals on multiple reference signal resources includes: when the fourth information indicates that reference signal resource groups are configured for the multiple CCs, sending the reference signals on the multiple reference signal resources.

[0091] That is to say, before the network device sends a reference signal, the fourth information may be used to indicate whether a reference signal resource group is configured for multiple CCs. In this way, the terminal can determine whether a reference signal resource group is configured for multiple CCs based on the fourth information. If a reference signal resource group is configured, the method provided in the present application may be used to receive the reference signal, and perform channel measurement and feedback; if a reference signal resource group is not configured, the reference signal may be received according to the existing technology, and channel measurement and feedback may be performed. Therefore, the network device may consider whether to configure a reference signal resource group for multiple CCs according to demand, and then obtain the required channel measurement results, thereby providing a basis for resource scheduling, so that resource scheduling can be performed more flexibly.

[0092] In combination with the second aspect, in some possible implementation manners of the second aspect, the receiving measurement results corresponding to the multiple CCs includes: receiving the respective corresponding measurement results on the multiple CCs respectively.

[0093] The network device may allocate reporting resources corresponding to multiple CCs for the terminal. The terminal may send its corresponding measurement results on each CC in the multiple CCs. In other words, the measurement results corresponding to each CC are transmitted by the reporting resources on each CC. This implementation method is applicable to the case where the uplink bandwidth and the downlink bandwidth are symmetrical, that is, the terminal supports multiple CCs in both uplink and downlink.

[0094] In combination with the second aspect, in some possible implementation manners of the second aspect, the receiving measurement results corresponding to the multiple CCs includes: receiving the measurement results corresponding to the multiple CCs on one CC among the multiple CCs.

[0095] The network device may also allocate reporting resources corresponding to one of the multiple CCs to the terminal. The terminal may feedback measurement results corresponding to multiple CCs on the CC. In other words, the terminal may feedback measurement results across CCs. This implementation method may be applicable to situations where the uplink bandwidth and downlink bandwidth are asymmetric, that is, the terminal supports multiple CCs in the downlink and only one CC in the uplink.

[0096] By providing the above two implementation methods of sending measurement results corresponding to multiple CCs, different implementation methods can be provided for different allocation situations of uplink and downlink bandwidths, so that the network device can obtain comprehensive CSI under different bandwidth allocation situations.

[0097] In a third aspect, the present application provides a communication device, including modules or units for implementing the method in the first aspect and any possible implementation of the first aspect. Each module or unit can implement a corresponding function by executing a computer program.

[0098] Exemplarily, the communication device in the third aspect is a terminal, or a component configured in a terminal, such as a chip, a chip system, a processor, etc.

[0099] In a fourth aspect, the present application provides a communication device, comprising a processor, wherein the processor is used to execute the measurement method described in the first aspect and any possible implementation manner of the first aspect.

[0100] Optionally, the device further comprises a memory for storing instructions and data. The memory is coupled to the processor, and when the processor executes the instructions stored in the memory, the methods described in the above aspects can be implemented.

[0101] Optionally, the device further comprises a communication interface, and the communication interface is used for the device to communicate with other communication devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, pin or other types of communication interfaces.

[0102] Exemplarily, the communication device provided in the fourth aspect is a chip or a chip system.

[0103] In a fifth aspect, the present application provides a communication device, including a processor and a communication interface, wherein the communication interface is used to receive a signal from another communication device outside the communication device and transmit it to the processor, or send a signal from the processor to another communication device outside the communication device, and the processor implements the measurement method described in the first aspect and any possible implementation of the first aspect through a logic circuit or by executing code instructions. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, pin, or other type of communication interface.

[0104] Optionally, the device further comprises a memory for storing instructions and data. The memory is coupled to the processor, and when the processor executes the instructions stored in the memory, the method described in the first aspect above can be implemented.

[0105] In a sixth aspect, the present application provides a communication device, comprising a processor and a memory, wherein the memory is used to store instructions and data, and when the processor executes the instructions stored in the memory, it can implement the measurement method described in the first aspect and any possible implementation of the first aspect.

[0106] Optionally, the device further comprises a communication interface, and the communication interface is used for the device to communicate with other communication devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, pin or other types of communication interfaces.

[0107] Exemplarily, the communication device in the fifth aspect or the sixth aspect is a terminal.

[0108] In a seventh aspect, the present application provides a communication device, comprising modules or units for implementing the method in the second aspect and any possible implementation of the second aspect. Each module or unit can implement the corresponding function by executing a computer program.

[0109] Exemplarily, the communication device in the third aspect is a terminal, or a component configured in a terminal, such as a chip, a chip system, a processor, etc.

[0110] In an eighth aspect, the present application provides a communication device, comprising a processor, wherein the processor is used to execute the measurement method described in the second aspect and any possible implementation manner of the second aspect.

[0111] Optionally, the device further comprises a memory for storing instructions and data. The memory is coupled to the processor, and when the processor executes the instructions stored in the memory, the methods described in the above aspects can be implemented.

[0112] Optionally, the device further comprises a communication interface, and the communication interface is used for the device to communicate with other communication devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, pin or other types of communication interfaces.

[0113] Exemplarily, the communication device provided in the eighth aspect is a chip or a chip system. In the ninth aspect, the present application provides a communication device, including a processor and a communication interface, the communication interface is used to receive signals from other communication devices outside the communication device and transmit them to the processor, or send signals from the processor to other communication devices outside the communication device, and the processor implements the measurement method described in the second aspect and any possible implementation of the second aspect through a logic circuit or execution code instructions. Exemplarily, the communication interface can be a transceiver, circuit, bus, module, pin or other type of communication interface.

[0114] Optionally, the device further comprises a memory for storing instructions and data. The memory is coupled to the processor, and when the processor executes the instructions stored in the memory, the method described in the second aspect above can be implemented.

[0115] In the tenth aspect, the present application provides a communication device, including a processor and a memory, wherein the memory is used to store instructions and data, and when the processor executes the instructions stored in the memory, it can implement the measurement method described in the above-mentioned second aspect and any possible implementation method of the second aspect.

[0116] Optionally, the device further comprises a communication interface, and the communication interface is used for the device to communicate with other communication devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, pin or other types of communication interfaces.

[0117] Exemplarily, the communication device in the ninth aspect or the tenth aspect is a network device.

[0118] In an eleventh aspect, the present application provides a computer-readable storage medium, comprising a computer program, which, when executed on a computer, enables the computer to implement the method in the first or second aspect and any possible implementation manner of the first or second aspect.

[0119] In the twelfth aspect, the present application provides a computer program product, which includes: a computer program (also referred to as code, or instructions), which, when executed, enables a computer to execute the method in the first or second aspect and any possible implementation of the first or second aspect.

[0120] In a thirteenth aspect, a communication system is provided, comprising the aforementioned terminal and network device.

[0121] The third to thirteenth aspects of the present application correspond to the technical solutions of the first and second aspects of the present application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation methods are similar and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0122] Figure 1 is a schematic diagram of the architecture of a communication system applicable to the measurement method provided in an embodiment of the present application;

[0123] Figure 2 It is a schematic diagram of an access network device applicable to the measurement method provided in this application;

[0124] Figure 3 is a schematic diagram of hybrid beamforming;

[0125] Figure 4 is a schematic diagram of a network device sending a reference signal on multiple CCs;

[0126] Figure 5 is a schematic flow chart of the measurement method provided in the embodiment of the present application;

[0127] FIG. 6A to FIG. 6D is a schematic diagram of a reference signal resource group provided in an embodiment of the present application;

[0128] Figure 7 is a schematic diagram of a set of measurement results provided by an embodiment of the present application;

[0129] Figures 8 to 10 It is a schematic diagram of a network device sending a reference signal on multiple CCs and a terminal sending a measurement result provided by an embodiment of the present application;

[0130] Fig.11 and Fig.12 is a schematic diagram of a communication device provided in an embodiment of the present application;

[0131] Fig.13 is a schematic diagram of the structure of a terminal provided in an embodiment of the present application;

[0132] Fig.14 It is a structural diagram of the network device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0133] The technical solution provided by this application will be described below in conjunction with the accompanying drawings.

[0134] To facilitate understanding of the embodiments of the present application, the following points are first explained:

[0135] First, in this application, indication includes explicit indication (also called direct indication) and implicit indication (also called indirect indication). Among them, explicit indication information A means including the information A; implicit indication information A means indicating information A through the correspondence between information A and information B and directly indicating information B. The correspondence between information A and information B can be predefined, pre-stored, pre-burned, or pre-configured; or, it can also mean indicating information A through information B and preset rules.

[0136] Second, in this application, information C is used to determine information D, which includes information D being determined based only on information C, and information D being determined based on information C and other information. In addition, information C is used to determine information D, and it can also be indirectly determined, for example, information D is determined based on information E, and information E is determined based on information C.

[0137] Third, in this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship, but it does not exclude the situation where the previous and next associated objects are in an "and" relationship. The specific meaning can be understood in combination with the context. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c; a and b; a and c; b and c; or a and b and c. Where a, b, c can be single or multiple.

[0138] Fourth, in this application, the use of prefixes such as "first" and "second" is only to facilitate the distinction and description of different things belonging to the same name category, and does not restrict the order, size or quantity of things. For example, "first information" and "second information" are just different information, and there is no time sequence, size relationship or priority relationship between the two.

[0139] Fifth, the "sending" and "receiving" in this application indicate the direction of signal transmission. For example, "sending information to the terminal" can be understood as the destination end of the information is the terminal, which can include direct sending through the air interface, and also include indirect sending through the air interface by other units or modules. "Receiving information from a network device" can be understood as the source end of the information is the network device, which can include directly receiving from the network device through the air interface, and also include indirectly receiving from the network device through the air interface from other units or modules. "Sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface.

[0140] In other words, sending and receiving can be performed between devices, for example, between a terminal and a network device; it can also be performed within a device, for example, sending or receiving between components, modules, chips, software modules or hardware modules within the device through a bus, wiring or interface.

[0141] Sixth, in the embodiments of the present application, "when", "if" and "if" all mean that the device will make corresponding processing under certain objective circumstances, which does not limit the time, and does not require the device to have a judgment action when it is implemented, nor does it mean that there are other limitations.

[0142] Seventh, in this application, words such as "example", "exemplarily", "for example" or "such as" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "example", "exemplarily", "for example" or "such as" in this application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "example", "exemplarily", "for example" or "such as" is intended to present related concepts in a concrete way.

[0143] Eighth, this article describes the method provided by the present application by taking downlink channel measurement as an example, but this should not limit the scenarios to which this solution is applicable. In uplink channel measurement, the network device can also configure a reference signal resource group corresponding to multiple CCs for the terminal, and then receive reference signals on multiple reference signal resources in the reference signal resource group, and perform channel measurement and reporting. Based on the same concept, technicians in this field can make simple changes on the basis of the embodiments of this article to obtain the process of uplink channel measurement. For the sake of brevity, this article will not go into details.

[0144] The technical solution provided in this application can be applied to various communication systems, such as: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), sidelink (SL) communication system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) mobile communication system or new radio access technology (NR). Among them, the 5G mobile communication system can include non-standalone (NSA) and / or standalone (SA). The technical solution provided in this application can also be applied to future communication systems, such as the sixth generation (6G) mobile communication system. This application is not limited to this.

[0145] Figure 1 It is a schematic diagram of the architecture of a communication system applicable to the measurement method provided in this application. Figure 1 A schematic diagram of a possible, non-limiting system architecture is shown. Figure 1 As shown, the communication system 10 includes a radio access network (RAN) 100 and a core network (CN) 200. The RAN 100 includes at least one RAN node (e.g. Figure 1 110a and 110b, collectively referred to as 110) and at least one terminal (such as Figure 1 RAN 100 may also include other RAN nodes, such as wireless relay equipment and / or wireless backhaul equipment ( Figure 1 The terminal 120 is connected to the RAN node 110 in a wireless manner. The RAN node 110 is connected to the core network 200 in a wireless or wired manner. The core network device in the core network 200 and the RAN node 110 in the RAN 100 may be different physical devices, or may be the same physical device that integrates the core network logical function and the radio access network logical function.

[0146] RAN 100 may be a cellular system related to the third generation partnership project (3GPP), for example, a 4G, 5G mobile communication system, or a future evolution system (for example, a 6G mobile communication system). RAN 100 may also be an open access network (open RAN, O-RAN or ORAN), a cloud radio access network (cloud radio access network, CRAN), or a wireless fidelity (wireless fidelity, Wi-Fi) system. RAN 100 may also be a communication system that integrates two or more of the above systems.

[0147] The RAN node 110, which may also be sometimes referred to as an access network device, a RAN entity or an access node, is a part of the communication system and is used to help the terminal achieve wireless access. The multiple RAN nodes 110 in the communication system 10 may be nodes of the same type or nodes of different types. In some scenarios, the roles of the RAN node 110 and the terminal 120 are relative, for example, Figure 1 The network element 120i may be a helicopter or a drone, which may be configured as a mobile base station. For the terminals 120j that access the RAN 100 through the network element 120i, the network element 120i is a base station; but for the base station 110a, the network element 120i is a terminal. The RAN node 110 and the terminal 120 are sometimes referred to as communication devices, for example Figure 1 The network elements 110a and 110b may be understood as communication devices having base station functions, and the network elements 120a-120j may be understood as communication devices having terminal functions.

[0148] In one possible scenario, a RAN node may be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next generation NodeB (gNB), a next generation base station in a sixth generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. A RAN node may be a macro base station (e.g. Figure 1 110a in), micro base stations or indoor stations (such as Figure 1110b in the example above), a relay node or a donor node, or a wireless controller in a CRAN scenario. Optionally, the RAN node may also be a server, a wearable device, a vehicle or an onboard device, etc. For example, the access network device in the vehicle to everything (V2X) technology may be a road side unit (RSU).

[0149] In another possible scenario, multiple RAN nodes collaborate to assist the terminal in achieving wireless access, and different RAN nodes respectively implement part of the functions of the base station. For example, the RAN node can be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU can be set separately, or can also be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU) or a remote radio head (RRH).

[0150] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, CU, CU-CP, CU-UP, DU and RU are described as examples in this application. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0151] Terminals can also be called terminal devices, user equipment (UE), mobile stations, mobile terminals, etc. Terminals can be widely used 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, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. Terminals can be mobile phones, tablet computers, computers with wireless transceiver functions, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc.

[0152] In the embodiments of the present application, the terminal and the network device may be hardware devices, or software functions running on dedicated hardware, or software functions running on general-purpose hardware, such as virtualization functions instantiated on a platform (e.g., a cloud platform), or entities including dedicated or general-purpose hardware devices and software functions. The present application does not limit the specific forms of the terminal and the network device.

[0153] Figure 2 Schematic diagram of access network equipment applicable to the measurement method provided in this application. Figure 2 As shown, the access network equipment includes one or more CUs, one or more DUs, and one or more radio units (RUs). For the sake of clarity, Figure 2 Only one CU, DU and RU are shown. The CU is used to connect to the core network and one or more DUs. Optionally, the CU may have some functions of the core network. The CU may include a CU-CP and a CU-UP.

[0154] CU and DU can be configured according to the protocol layer functions of the wireless network they implement: for example, CU is configured to implement the functions of the packet data convergence protocol (PDCP) layer and the protocol layers above (such as the RRC layer and / or the service data adaptation protocol (SDAP) layer, etc.); DU is configured to implement the functions of the protocol layers below the PDCP layer (such as the radio link control (RLC) layer, the medium access control (MAC) layer, and / or the physical (PHY) layer, etc.). For another example, CU is configured to implement the functions of the protocol layers above the PDCP layer (such as the RRC layer and / or the SDAP layer), and DU is configured to implement the functions of the PDCP layer and the protocol layers below (such as the RLC layer, the MAC layer, and / or the PHY layer, etc.).

[0155] When the CU includes a CU-CP and a CU-UP, the CU-CP is used to implement the control plane function of the CU, and the CU-UP is used to implement the user plane function of the CU. For example, when the CU is configured to implement the functions of the PDCP layer, the RRC layer, and the SDAP layer, the CU-CP is used to implement the control plane function of the RRC layer and the PDCP layer, and the CU-UP is used to implement the user plane function of the SDAP layer and the PDCP layer.

[0156] CU-CP can interact with network elements in the core network for implementing control plane functions. The network elements in the core network for implementing control plane functions can be access and mobility function network elements, such as access and mobility management function (AMF) network elements in 5G systems. The AMF network element is responsible for mobility management in the mobile network, such as terminal location update, terminal registration network, terminal switching, etc.

[0157] CU-UP can interact with network elements in the core network for implementing user plane functions. Network elements in the core network for implementing user plane functions, such as the user plane function (UPF) network element in the 5G system, are responsible for forwarding and receiving data in the terminal.

[0158] The above configuration of CU and DU is only an example, and the functions of CU and DU can also be configured as needed. For example, CU or DU can be configured to have functions of more protocol layers, or CU or DU can be configured to have partial processing functions of protocol layers. For example, some functions of the RLC layer and the functions of the protocol layers above the RLC layer are set in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are set in the DU. For another example, the functions of CU or DU can be divided according to service type or other system requirements, such as by delay, and the functions whose processing time needs to meet the smaller delay requirement are set in the DU, and the functions that do not need to meet the delay requirement are set in the CU.

[0159] DU and RU can cooperate to jointly implement the functions of the PHY layer. A DU can be connected to one or more RUs. The functions of DU and RU can be configured in a variety of ways according to the design. For example, DU is configured to implement baseband functions, and RU is configured to implement mid-RF functions. For another example, DU is configured to implement high-level functions in the PHY layer, and RU is configured to implement low-level functions in the PHY layer or to implement the low-level functions and RF functions. The high-level functions in the physical layer may include a part of the functions of the physical layer, which is closer to the MAC layer, and the low-level functions in the physical layer may include another part of the functions of the physical layer, which is closer to the mid-RF side.

[0160] In order to better understand the method provided in the embodiments of the present application, the terms involved in the present application are briefly explained below.

[0161] 1. Antenna port: Antenna port is a logical concept. There is no direct correspondence between an antenna port and a physical antenna. Antenna port is usually associated with a reference signal, and its meaning can be understood as a transceiver interface on the channel that the reference signal passes through. For low-frequency systems, an antenna port may correspond to one or more antenna elements. These elements jointly send reference signals, and the receiver can treat them as a whole without distinguishing these elements. For high-frequency systems, the antenna port may correspond to a beam. Similarly, the receiver only needs to regard this beam as an interface without distinguishing each element.

[0162] 2. Beam: refers to the main lobe of the radiation pattern of an antenna or antenna array, which is formed by superimposing the radiation signals of each antenna module. The transmit beam may refer to the distribution of signal strength in different directions in space after the signal is transmitted by the antenna, and the receive beam may refer to the signal strength distribution of the wireless signal received from the antenna in different directions in space. It can be understood that one or more antenna ports forming a beam can also be regarded as an antenna port set, or an antenna port group. A beam can include one or more antenna ports for transmitting reference signals, data channels, control channels or detection signals, etc.

[0163] A beam is a communication resource, which can be a wide beam, a narrow beam, or other types of beams. The beam forming technology can be digital beam forming technology, analog beam forming technology, or hybrid beam forming technology.

[0164] The embodiment of beam in the protocol can also be spatial filter, spatial parameters, transmission mode, transmission mode, etc. Among them, the transmission mode represents digital weighting and / or analog weighting. Different transmission modes correspond to different digital weights, or different analog weights, or a combination of different digital weights and different analog weights. In actual communication systems, beams can be represented by resources (or signals, reference signals, port groups).

[0165] 3. Beamforming: also known as beamforming. With the development of multiple input multiple output (MIMO) technology, both the transmitter and the receiver can use multiple antennas to send and receive signals, so as to obtain diversity gain, realize spatial multiplexing, and obtain higher transmission rates. However, due to the interference and diffraction of electromagnetic waves, the electromagnetic wave signals emitted by multiple antennas may have different phases. After superposition, electromagnetic waves of different phases are enhanced in some directions and weakened in some directions. The essence of beamforming is to change the amplitude and phase of the signal of each transmitting antenna so that the superposition effect of multiple antennas is aimed at beams in individual directions in space, that is, the energy is concentrated in a few directions, and is zero or close to zero in most of the space.

[0166] Digital beamforming can be achieved by adjusting the amplitude and / or phase of the signal in the digital domain. Digital beamforming can be achieved specifically through precoding. Precoding can implement digital weighting at the subband level to achieve different digital weights for different subbands; or precoding can implement digital weighting at the full-band level, with the same digital weights for the entire frequency band.

[0167] However, after completing the processing in the digital domain, it is necessary to perform operations on the transmitter side such as digital-to-analog conversion and up-conversion, as well as operations on the receiver side such as analog-to-digital conversion and down-conversion, which are usually implemented through a radio frequency chain (RF chain). Each RF chain can include a digital to analogue converter (DAC) for implementing the operations on the transmitter side and an analog to digital converter (ADC) for implementing the operations on the receiver side, as well as hardware such as a mixer for up-conversion and a power amplifier for power amplification. In a digital beamforming system, a corresponding RF chain needs to be configured for each antenna, so the number of RF chains is proportional to the number of antennas.

[0168] Analog beamforming can be mainly achieved by using a phase shifter in the analog domain to adjust the phase of the signal. Analog beamforming can only perform analog weighting of the entire band, that is, the entire band shares the same weight.

[0169] In large-scale antenna arrays, such as in 5G systems, the number of antennas can reach hundreds, and configuring a corresponding RF link for each antenna will incur a large hardware expense. Therefore, hybrid beamforming came into being.

[0170] Hybrid beamforming combines digital beamforming and analog beamforming to form a focusing effect on a specific direction in space, i.e., a beam, through two-level weighting of digital and analog. By using hybrid beamforming, the number of RF links can be greatly reduced, thereby saving hardware overhead.

[0171] In one implementation, multiple digital channels are digitally weighted in the same manner across the entire frequency band, which has an effect similar to analog beamforming.

[0172] In another implementation, the digital channel (or digital weighting) can be divided into multiple levels. The first level performs the same digital weighting for the entire frequency band, and the second level performs weighting for the sub-bands. The effect is also equivalent to hybrid beamforming. Figure 3 As shown, Figure 3 A schematic diagram of hybrid beamforming (or digital beamforming) is shown. The digital channels are evenly divided into K1 (K1 is a positive integer) groups (or, K1 sub-arrays, K1 port groups), and the number of digital channels in each group (or, sub-array, port group) is the same, for example, K2 (K2 is a positive integer). Digital beamforming and analog beamforming can be regarded as two-level beamforming. The first-level beamforming is analog beamforming, and the weight of the first-level beamforming is w0=[w 0,0 w 0,1 …w 0,K2-1], where K2 elements correspond to K2 digital channels. The weights of the first-level beamforming are broadband, and each group uses the same first-level weight, i.e., w0. The second-level beamforming is digital beamforming, and the weights of the second-level beamforming are w1=[w 1,0 … w 1,K1-1 ], where K1 elements correspond to K1 digital channels. The second-level beamforming weights are sub-band, and the second-level weights are different between different groups (or sub-arrays, port groups), that is, the weight matrix corresponding to the digital channel is or in, represents the Kronecker product, It represents the weighted vector corresponding to the first-level weight. It can be seen that different weighted vectors have different beam directions. Therefore, the network device can adjust the beam direction by adjusting the weighted vector.

[0173] 4. Reference signal (RS): can be used for channel measurement, channel estimation or beam quality monitoring, etc. According to the protocol of LTE or NR, the uplink reference signal may include, for example, a sounding reference signal (SRS), a physical uplink control channel (PUCCH)-demodulation reference signal (DMRS) (PUCCH-DMRS), a physical uplink shared channel (PUSCH)-demodulation reference signal (PUSCH-DMRS), a phase noise tracking reference signal (PTRS), an uplink positioning signal (uplink positioning RS), etc.; the downlink reference signal may include, for example, a synchronization signal block (SSB), a physical downlink control channel (PDCCH)-demodulation reference signal (PDCCH-DMRS), a physical downlink shared channel (PDSCH)-demodulation reference signal (PDSCH-DMRS), PTRS, a channel status information reference signal (CSI-RS), a cell reference signal (CRS) in LTE, and a time / frequency domain tracking synchronization signal (tracking reference signal) in NR. signal, TRS), downlink positioning signal (positioning RS), etc.

[0174] The reference signal in the embodiment of the present application is mainly used for channel measurement, for example, it may refer to the CSI-RS used in downlink channel measurement, or may refer to the SRS used in uplink channel measurement, or may also be other reference signals that can be used for channel measurement. The present application does not limit this.

[0175] A specific application scenario is as follows: In the frequency division duplex (FDD) communication scenario, since the uplink and downlink channels are not reciprocal or cannot be guaranteed to be reciprocal, the network device usually sends CSI-RS to the terminal. The terminal performs channel measurement based on the received CSI-RS, obtains the channel state information (CSI) of the downlink channel, and feeds it back to the network device. The network device can decide the resources, modulation and coding scheme (MCS), and precoding configuration of the downlink data channel of the scheduling terminal based on the CSI.

[0176] Exemplarily, CSI may include: rank indicator (RI), channel quality indicator (CQI), precoding matrix indicator (PMI), layer indicator (LI), reference signal reception power (RSRP), reference signal reception quality (RSRQ), signal to noise ratio (SNR), signal to interference-noise ratio (SINR), etc. Among them, RI is used to indicate the number of downlink transmission layers recommended by the terminal, CQI is used to indicate the modulation and coding method supported by the current channel conditions determined by the terminal, PMI is used to indicate the precoding recommended by the terminal, and the number of precoding layers indicated by PMI corresponds to RI. Which quantities in the CSI that the terminal specifically feeds back can be determined according to the configuration, such as the "CSI-Report Configuration (CSI-ReportConfig)" described below.

[0177] 5. Reference signal resources: can be used to configure the transmission properties of reference signals, such as time-frequency resource location, port mapping relationship, power factor, and scrambling code. For details, please refer to the Third Generation Partnership Project (3GPP). rd The relevant sections on reference signal resources in 3GPP technical specifications (TS) 38.211 and 38.331. A transmitting end device may send a reference signal based on the reference signal resource, and a receiving end device may receive a reference signal based on the reference signal resource.

[0178] 6. Reference signal configuration: Reference signal configuration may include reference signal resource configuration and reference signal reporting configuration. The following takes CSI-RS configuration as an example for introduction.

[0179] The two more important parts of CSI-RS configuration are "CSI-ReportConfig" and "CSI-ResourceConfig". "CSI-ReportConfig" and "CSI-ResourceConfig" are names used only for ease of description, and other names may also be used. This application does not limit this.

[0180] Among them, "CSI-ReportConfig" can be used to configure CSI reporting related parameters, such as "report configuration identifier (ReportConfigId)", "report configuration type (reportConfigType)", "report quantity (reportQuantity)", etc. "reportConfigId" can be used to mark "CSI-ReportConfig", that is, one "reportConfigId" can correspond to one "CSI-ReportConfig". "reportConfigType" is used to configure the reporting type, which can be specifically divided into: periodic reporting, semi-continuous reporting and aperiodic reporting. "reportQuantity" can be used to configure the reported information, including, for example: CSI-RS resource indicator (CRI), precoding matrix indicator (PMI), rank indicator (RI), layer indicator (LI), channel quality indicator (CQI), reference signal reception power (RSRP), reference signal reception quality (RSRQ), signal to noise ratio (SNR), signal to interference-noise ratio (SINR), etc. Different information can be reported through different configurations.

[0181] “CSI-ResourceConfig” may be used to configure CSI-RS resource-related information, such as “CSI resource configuration identifier (CSI-ResourceConfigId)” and CSI-RS resources used for measurement.

[0182] Among them, "CSI-ResourceConfigId" is the identifier of "CSI resource configuration (CSI-ResourceConfig)", which is used to mark the "CSI-ResourceConfig", and can be associated with "CSI-ReportConfig" through this variable. The CSI-RS resources used for measurement involved in this application are mainly non-zero power (none-zero power, NZP) CSI-RS resources (NZPCSI-RS resource).

[0183] Exemplarily, through the high-level parameters "NZP-CSI-RS-Resource", "CSI-ResourceConfig" and "NZP-CSI-RS resource set (NZP-CSI-RS-ResourceSet)", each terminal can be configured with one or more NZP CSI-RS resource sets, and each NZP CSI-RS-resource set includes K (K ≥ 1) NZP CSI-RS resources. Each NZP CSI-RS resource can be identified by an "NZP-CSI-RS resource identifier (nzp-CSI-RS-ResourceId)".

[0184] 7. CC: frequency domain resources, carriers, corresponding to service cells. Network equipment can schedule one or more CCs for terminals. In this article, sending or receiving signals on a CC means sending or receiving signals on the frequency band corresponding to the CC. A terminal on a CC can be understood as a terminal that uses the frequency band corresponding to the CC for communication, or a terminal in the service cell corresponding to the CC.

[0185] When using analog beamforming or hybrid beamforming, network devices can only schedule beams in a time-division manner.

[0186] A possible scenario is Figure 4 shown. Figure 4 is a schematic diagram of a network device sending a reference signal on multiple CCs. As an example, Figure 4The reference signal shown in is CSI-RS. The network device uses beam #0 to send reference signals on four CCs, CC#0, CC#1, CC#2 and CC#3 at time t0, uses beam #1 to send reference signals on four CCs, CC#0 to CC#3 at time t1, uses beam #2 to send reference signals on four CCs, CC#0 to CC#3 at time t2, and uses beam #3 to send reference signals on four CCs, CC#0 to CC#3 at time t3. When the terminal performs channel measurement and feedback, it usually feeds back the strongest beam for each CC. For example, the beam with the strongest signal received by the terminal on CC#0 is beam #0, and CSI is reported based on the reference signal sent by beam #0; the beam with the strongest signal received by the terminal on CC#1 is beam #1, and CSI is reported based on the reference signal sent by beam #1; the beam with the strongest signal received by the terminal on CC#2 is beam #2, and CSI is reported based on the reference signal sent by beam #2; the beam with the strongest signal received by the terminal on CC#3 is beam #3, and CSI is reported based on the reference signal sent by beam #3. It can be seen that the CSI fed back by the terminal for each beam is incomplete. For example, the CSI fed back for beam #0 is the CSI measured on CC #0, the CSI fed back for beam #1 is the CSI measured on CC #1, the CSI fed back for beam #2 is the CSI measured on CC #2, and the CSI fed back for beam #3 is the CSI measured on CC #3. When the network device schedules beam #0, since the obtained CSI includes the CSI on CC #0 but does not include the CSI on CC #1, CC #2, and CC #3, among the four CCs, beam #0 can only be scheduled to CC #0, that is, the terminal on CC #0 can receive the signal sent by the network device using beam #0, while the terminals on CC #1, CC #2, and CC #3 cannot receive the signal sent by the network device using beam #0. In other words, during the period when the network device uses beam #0 to send signals, the terminals on CC #1, CC #2, and CC #3 cannot receive the signal. Similarly, in the four CCs, when the network device schedules beam #1, it can only schedule it to CC #1; when the network device schedules beam #2, it can only schedule it to CC #2; when the network device schedules beam #3, it can only schedule it to CC #3. The network device cannot schedule beams for terminals on multiple CCs at the same time, which affects the performance of the entire network.

[0187] Assuming that the network device schedules multiple CCs (such as CC#0 and CC#1 mentioned above) to the same terminal, since the network device does not obtain the CSI of each beam in the multiple CCs, it cannot schedule one beam to multiple CCs at the same time, or in other words, the network device cannot schedule with full bandwidth. Therefore, the experience of the terminal is impaired.

[0188] In view of this, the present application provides a measurement method, by grouping reference signal resources across CCs, that is, grouping reference signal resources on multiple CCs into a reference signal resource group, and sending reference signals through a beam on reference signal resources in a reference signal resource group, the terminal can perform measurements based on the received reference signal, and then feed back the measurement results corresponding to the multiple CCs to the network device. In this way, although the network device can only schedule beams in time division, since the measurement results of multiple CCs under the same beam (or transmission mode) can be obtained, that is, the CSI of multiple CCs, resource scheduling can be performed based on a more comprehensive CSI (or, CSI with a larger bandwidth). For example, in the scenario exemplified above, if the network device schedules multiple CCs to the same terminal, based on the method provided by the present application, the terminal can report the measurement results of multiple CCs under the same beam to the network device, and the network device can also perform resource scheduling based on the measurement results of each CC under the beam, that is, multiple CCs can be scheduled to the same terminal at the same time, or different terminals on multiple CCs can be served at the same time, thereby improving the performance of the entire network and improving the experience of the terminal. In addition, since multiple CCs can be scheduled at the same time, resources on different CCs can also be utilized, so that limited spectrum resources can be fully utilized, which is conducive to improving resource utilization.

[0189] The measurement method provided in the present application will be described in detail below with reference to the accompanying drawings.

[0190] Figure 5 It is a schematic flow chart of the measurement method provided in the embodiment of the present application. Figure 5 The method is described by taking the interaction between a network device and a terminal as an example, and should not constitute any limitation to the present application. Figure 5 The network device in the embodiment may also be replaced by a component configured in the network device (such as a chip, a chip system, a processor, etc.), or a logic module or software that can implement all or part of the functions of the network device. The terminal may be replaced by a component configured in the terminal (such as a chip, a chip system, a processor, etc.), or a logic module or software that can implement all or part of the functions of the terminal.

[0191] Figure 5 The method 500 shown includes steps 510 to 540. Each step in the method 500 is described in detail below.

[0192] In step 510, the network device sends first information, where the first information is used to indicate a plurality of reference signal resources in a reference signal resource group, where the plurality of reference signal resources correspond to a plurality of CCs. Correspondingly, the terminal receives the first information.

[0193] For example, in Figure 2In the access network device shown, the specific implementation of step 510 may be: the CU-CP corresponding to the network device generates the first information, and sends the first information to the terminal through the DU and RU; or the DU corresponding to the network device generates the first information, and sends the first information to the terminal through the RU. In the O-RAN system, the specific implementation of step 510 may be: the O-CU-CP corresponding to the network device generates the first information, and sends the first information to the terminal through the O-DU and O-RU; or the O-DU corresponding to the network device generates the first information, and sends the first information to the terminal through the O-RU.

[0194] The network device indicates a plurality of reference signal resources in a reference signal resource group through first information, so that the terminal determines the reference signal resource group based on the first information. In other words, the first information is used to configure a reference signal resource group for the terminal.

[0195] In the present application, the multiple reference signal resources included in the reference signal resource group may correspond to multiple CCs. In other words, the reference signal resource group may correspond to multiple CCs, or the reference signal resource group is configured for multiple CCs. Each reference signal resource may correspond to one CC. The correspondence here can be understood as follows: since the reference signal resources include resources in the time-frequency domain, and CC is a frequency domain resource, each reference signal resource corresponds to one CC, that is, each reference signal resource corresponds to one CC in the frequency domain, or each reference signal resource belongs to (or comes from) one CC in the frequency domain. It should be noted that the fact that each reference signal resource corresponds to one CC does not mean that each CC corresponds to one reference signal resource, and each CC may also correspond to multiple reference signal resources, or each CC may correspond to one or more reference signal resources.

[0196] It should be noted that the reference signal resource group (group) proposed in this application corresponds to multiple CCs, or is configured across CCs. The reference signal resource set (set) mentioned above is configured for each CC, or is not configured across CCs. Therefore, the reference signal resource group and the reference signal resource set are two different concepts, which are distinguished by different names in this article.

[0197] It is understandable that the network device can configure one or more reference signal resource groups for the terminal, each reference signal resource group including multiple reference signal resources corresponding to multiple CCs. The first information can be used to indicate multiple reference signal resources in each reference signal resource group in the one or more reference signal resource groups.

[0198] Taking a reference signal resource group as an example, when the first information is used to indicate multiple reference signal resources in the reference signal resource group, a possible implementation method is that the first information includes indexes of multiple CCs and identifiers of reference signal resources corresponding to each CC in a reference signal resource group; or, the first information indicates multiple CCs and reference signal resources corresponding to each CC in a reference signal resource group; or, the first information is multiple CCs and identifiers of reference signal resources corresponding to each CC in a reference signal resource group. This application does not limit the specific form of the first information.

[0199] Each CC and its corresponding reference signal resource can be regarded as a pairing relationship, so it can also be said that the first information includes an indication of the pairing relationship between multiple CCs and multiple reference signal resources; or, the first information indicates the pairing relationship between multiple CCs and multiple reference signal resources; or, the first information is the pairing relationship (or pairing information) between multiple CCs and multiple reference signal resources.

[0200] Exemplarily, the reference signal resource may be an NZP-CSI-RS resource. Taking this as an example, Table 1 below shows a possible embodiment of the first information in the standard:

[0201] Table 1

[0202]

[0203] Among them, "SEQUENCE" indicates that the data type is a sequence, and "INTEGER" indicates that the data type is an integer variable. "NEED R" refers to an optional field. For specific instructions, please refer to the relevant provisions in 3GPP TS 38.331, which will not be described in detail here.

[0204] It should be noted that "nzp-CSI-RS-ResourceId" is the ID of the NZP CSI-RS resource, which is used to identify an NZP CSI-RS resource. When the network device configures NZP-CSI-RS resources for each CC, the ID of the NZP-CSI-RS resource is uniformly numbered in the configuration information of a CC. In other words, the ID of an NZP-CSI-RS resource is globally unique for a CC. In other words, even if they belong to different NZP-CSI-RS resource sets, the NZP CSI-RS resources with the same ID on the same CC have the same resources in the time domain and frequency domain, and the NZP CSI-RS resources with different IDs on the same CC have different corresponding resources in the time domain and / or frequency domain. In contrast, there may be NZP CSI-RS resources with the same ID on different CCs, but the resources corresponding to the NZP CSI-RS resources with the same ID on different CCs in the time domain and / or frequency domain are not necessarily the same.

[0205] In another implementation, the ID of the NZP-CSI-RS resource may be uniformly numbered within the NZP-CSI-RS resource set to which it belongs. In other words, the ID of an NZP-CSI-RS resource is unique within the NZP-CSI-RS resource set to which it belongs, but is not necessarily globally unique for a CC. In this case, an NZP-CSI-RS resource may be jointly indicated by the ID of the NZP-CSI-RS resource set and the ID of the NZP-CSI-RS resource. Therefore, another possible embodiment of the first information in the standard is shown in Table 2 below:

[0206] Table 2

[0207]

[0208]

[0209] Table 1 and Table 2 respectively show the configuration information of the NZP-CSI-RS resource, which configures a reference signal resource group through "CMRGroupingAndPairing". Among them, "groupingAndPairingId" represents the grouping and pairing identifier (identifier, ID), that is, the group identifier of the reference signal resource group. In one implementation, the group identifier corresponds to the transmission beam (analog beam, second-level digital beam, or other one or more levels of digital beams) of the network device.

[0210] As shown in Table 1 and Table 2, 4 CCs (such as 4 CCs indexed 1 to 4 in the above table) and 4 NZP-CSI-RS resources (such as 4 NZP-CSI-RS resources with IDs 1 to 4 in the above table) are shown under "groupingAndPairingId", which means that the 4 NZP-CSI-RS resources are used as a reference signal resource group corresponding to the 4 CCs, or the reference signals on the corresponding reference signal resources in the 4 CCs are sent by the same beam. The 4 CCs and 4 NZP-CSI-RS resources shown in Table 1 and Table 2 correspond one to one, and the reference signal resources corresponding to each CC are associated through the index of the CC.

[0211] It should be noted that the above parameters are all optional. The specific number of CCs in each group can be other values. For example, the above example only describes 4 CCs as an example, and it can be other values ​​in practice. The specific value can be determined according to the maximum number (for example, the number of CCs) that the base station scheduling or terminal can support simultaneously. In addition, each CC may also correspond to another number of NZP-CSI-RS resources. In other words, the number of reference signal resources 4 included in each reference signal resource group and the corresponding number of CCs 4 are examples, and this application does not limit this.

[0212] In the examples of Table 1 and Table 2, the network device can configure the pairing relationship between multiple reference signal resources and multiple CCs in each reference signal resource group through the first information, and explicitly indicates the multiple reference signal resources in each reference signal resource group.

[0213] In another implementation, the first information includes configuration information of each reference signal resource in the multiple reference signal resources, the configuration information of each reference signal resource indicates the group identifier of the reference signal resource group to which it belongs, and multiple reference signal resources of the same reference signal resource group correspond to the same group identifier. The first information indicates which reference signal resources belong to the same reference signal resource group by indicating the group identifier of the reference signal resource group to which each reference signal resource belongs, without having to indicate the multiple reference signal resources and their corresponding CCs one by one for each reference signal resource group.

[0214] It should be understood that the first information includes the configuration information of each reference signal resource in the multiple reference signal resources, and it can also be replaced by the first information being information carrying the configuration information of each reference signal resource in the multiple reference signal resources; or, the first information indicates the configuration information of each reference signal resource in the multiple reference signal resources; or, the first information is the configuration information of the multiple reference signal resources. This application does not limit the specific form of the first information.

[0215] Table 3 below shows another possible embodiment of the first information in the standard:

[0216] Table 3

[0217]

[0218] In Table 3, "groupingAndPairingId" is used to indicate the group identifier of the reference signal resource group to which the NZP-CSI-RS resource belongs. The network device can indicate the group identifier of the reference signal resource group to which each NZP-CSI-RS resource belongs. After the terminal receives the configuration information of each NZP-CSI-RS resource, it can determine that the NZP-CSI-RS resources with the same group identifier belong to the same reference signal resource group based on the group identifier of the reference signal resource group to which each NZP-CSI-RS resource belongs. Therefore, compared with the implementation method shown in the previous text in combination with Table 1 and Table 2, the method of indicating multiple reference signal resources in each reference signal resource group by indicating the group identifier of the reference signal resource group to which the reference signal resource belongs in Table 3 has less signaling overhead.

[0219] The first information shown in Tables 1 to 3 above may be carried in the signaling used to configure NZP-CSI-RS-Resource, the signaling may be, for example, an RRC message, and the first information may be, for example, a parameter in the information element "NZP-CSI-RS-Resource". However, this is only a possible design and should not constitute any limitation to the present application.

[0220] In another design, the first information may also be carried in signaling for configuring NZP-CSI-RS-ResourceSet, the signaling may be, for example, an RRC message, and the first information may be, for example, a parameter in the information element "NZP-CSI-RS-ResourceSet". Table 4 below shows another possible embodiment of the first information in the standard:

[0221] Table 4

[0222]

[0223] Different from Table 1 and Table 2, the CMR grouping and pairing configuration shown in Table 4 is to first show the multiple CCs corresponding to a reference signal resource group in sequence, and then show the multiple reference signals in the reference signal resource group in sequence according to the order of the multiple CCs above, and the number of reference signal resources corresponding to each CC can be predefined. For example, if a CC is paired with a reference signal resource, it can be obtained that: the first CC (that is, "CarrierIndex1") is paired with the first NZP-CSI-RS resource (that is, "nzp-CSI-RS-ResourceId1"), the second CC (that is, "CarrierIndex2") is paired with the second NZP-CSI-RS resource (that is, "nzp-CSI-RS-ResourceId2"), and so on, and the corresponding relationship between four CCs and four NZP-CSI-RS resources can be obtained.

[0224] In addition, for each reference signal resource group, the pairing relationship between multiple CCs and multiple reference signal resources can be indicated in the manner shown in Table 4. Although not shown in Table 4, technicians in this field can obtain more CMR grouping and pairing configurations based on the examples in Table 4.

[0225] Based on the CMR grouping and pairing configured by the first information, the terminal can determine multiple reference signal resources in each reference signal resource group and the CC corresponding to each reference signal resource. This method can be regarded as a display indication of multiple reference signal resources in the reference signal resource group.

[0226] It should be understood that in Tables 1 to 4 above, the configuration information of NZP-CSI-RS resources (or, the configuration information of reference signal resources) and the configuration information of NZP-CSI-RS resource sets (or, the configuration information of reference signal resource sets) are used as examples to illustrate several possible forms of the first information, but this should not constitute any limitation on the present application. The present application does not limit the specific form of the first information and the specific signaling carrying the first information.

[0227] Still taking a reference signal resource group as an example, when the first information is used to indicate multiple reference signal resources in the reference signal resource group, another possible implementation method is that the first information includes configuration information of each CC in multiple CCs, the configuration information of each CC includes an identifier configured for the respective reference signal resources, and the multiple reference signal resources in the reference signal resource group are determined based on preset rules.

[0228] Exemplarily, the preset rules include one or more of the following:

[0229] 1) Multiple reference signal resources in the same reference signal resource group have the same identifier;

[0230] 2) multiple reference signal resources in the same reference signal resource group have the same time domain resource; or

[0231] 3) Multiple reference signal resources in the same reference signal resource group have the same order in the configuration information of their corresponding CCs.

[0232] The above three items are explained below respectively.

[0233] As mentioned above, the identifier of the reference signal resource is globally unified in the configuration information of a CC, that is, the identifier of each reference signal resource is globally unique in the configuration information of a CC. Therefore, in rule 1), the fact that multiple reference signal resources in a reference signal resource group have the same identifier does not mean that the resources corresponding to the multiple reference signal resources in the time domain and the frequency domain are the same. Since the multiple reference signal resources come from multiple CCs, the resources corresponding to the multiple reference signal resources in the time domain and / or the frequency domain are not necessarily the same.

[0234] In Rule 2), multiple reference signal resources have the same time domain resources, that is, the multiple reference signal resources correspond to the same position in the time domain, that is, when the network device sends a reference signal on multiple reference signal resources in the reference signal resource group, the sending time of the reference signal is the same, or, when the terminal receives a reference signal on multiple reference signal resources in the reference signal resource group, the receiving time of the reference signal is the same.

[0235] In rule three), the multiple reference signal resources in the reference signal resource group may also be reference signal resources in the same order among the reference signal resources configured for multiple CCs. The order mentioned here means that when one or more reference signal resources are configured for a CC through configuration information, the position of each signal resource in the configuration information may be defined, for example, according to a preset direction, and the preset direction may be: from the first to the last (or from the front to the back), or from the last to the first (or from the back to the front). The same order means that when one or more reference signal resources are configured for multiple CCs respectively through the configuration information of multiple CCs, the multiple reference signal resources in the same reference signal resource group have the same position in the configuration information of multiple CCs, for example, according to the direction from the first to a certain direction, the multiple reference signal resources in the same reference signal resource group have the same order in the configuration information of multiple CCs.

[0236] In the embodiment of the present application, multiple reference signal resources in a reference signal resource group may satisfy one or more of the above rules 1) to 3). The terminal may determine multiple reference signal resources in the reference signal resource group based on one or more of the above rules based on the reference signal resources configured by the network device for each CC.

[0237] FIG. 6A to FIG. 6D It is a schematic diagram of a reference signal resource group satisfying different rules provided in an embodiment of the present application.

[0238] Fig. 6A The reference signal resource group shown is composed of multiple reference signal resources with the same identifier. As shown in the figure, the reference signal resources in the same reference signal resource group are all CSI-RS resources with the identifier #0. It can be seen that the multiple reference signal resources correspond to different time domain resources. That is, the reference signal resource group satisfies the above rule 1).

[0239] Figure 6B The reference signal resource group shown is composed of multiple reference signal resources with the same time domain resources. As shown in the figure, multiple reference signal resources in the same reference signal resource group correspond to the same time domain resource. The multiple reference signal resources at time t0 are one reference signal resource group (as shown in CSI-RS resource group #1 in the figure), and the multiple reference signal resources at time t1 are one reference signal resource group (as shown in CSI-RS resource group #2 in the figure), and so on. K-1 The multiple reference signal resources at the time are a reference signal resource group (as shown in CSI-RS resource group #K-1 in the figure). It can be seen that the multiple reference signal resources in each reference signal resource group in the multiple reference signal resource groups do not necessarily have the same identifier. That is, the reference signal resource group satisfies the above rule 2).

[0240] Figure 6C The reference signal resource group shown is composed of multiple reference signal resources with the same identifier and the same time domain resource. As shown in the figure, multiple reference signal resources in the same reference signal resource group correspond to the same time domain resource. The multiple reference signal resources at time t0 are a reference signal resource group (as shown in CSI-RS resource group #1 in the figure), and the identifiers of the multiple reference signal resources in the reference signal resource group are all CSI-RS resources #0; the multiple reference signal resources at time t1 are a reference signal resource group (as shown in CSI-RS resource group #2 in the figure), and the identifiers of the multiple reference signal resources in the reference signal resource group are all CSI-RS resources #1; and so on, t K-1 The multiple reference signal resources at the time are a reference signal resource group (as shown in the CSI-RS resource group #K-1 in the figure), and the identifiers of the multiple reference signal resources in the reference signal resource group are all CSI-RS resources #K-1. It can be seen that the multiple reference signal resources in each reference signal resource group in the multiple reference signal resource groups meet rule 1) and rule 2).

[0241] Fig.6DThe reference signal resource group shown is composed of multiple reference signal resources with the same order in the configuration information of the corresponding CCs. As shown in the figure, the first reference signal resource configured for CC#0 (CSI-RS resource #0 in the figure) and the first reference signal resource configured for CC#1 (CSI-RS resource #1 in the figure) are a reference signal resource group (CSI-RS resource group #0 in the figure), and the second reference signal resource configured for CC#0 (CSI-RS resource #2 in the figure) and the second reference signal resource configured for CC#1 (CSI-RS resource #3 in the figure) are a reference signal resource group (CSI-RS resource group #1 in the figure). It can be seen that the multiple reference signal resources in each reference signal resource group in the multiple meal card signal resource groups have the same order in the configuration information of multiple CCs, but the identifiers of the multiple reference signal resources in the same reference signal resource group are not necessarily the same, and the time domain resources are not necessarily the same. That is, the multiple reference signal resource groups satisfy the above rule three).

[0242] It should be understood that FIG. 6A to FIG. 6D The schematic diagram of reference signal resource groups satisfying different rules is merely given as an example, and the number of each reference signal resource group and the number of reference signal resources in each reference signal resource group are not limited.

[0243] Which one or more of the above rules the multiple reference signal resources in the reference signal resource group specifically satisfy may be predefined by the protocol. For example, if the protocol predefines that the multiple reference signal resources in the same reference signal resource group satisfy rule 1), then the multiple reference signal resources ranked first in the configuration information of the multiple CCs may be grouped together, and the multiple reference signal resources ranked second in the configuration information of the multiple CCs may be grouped together, and so on, to obtain one or more reference signal resource groups.

[0244] The network device may also indicate which one or more of the above rules the multiple reference signal resources in the reference signal resource group specifically meet. Optionally, the method further includes: the network device sends second information, or the terminal receives second information, the second information being used to indicate the rules met by the multiple reference signal resources in the reference signal resource group.

[0245] For example, in Figure 2In the access network device shown, the specific implementation of the network device sending the second information can be: the CU-CP corresponding to the network device generates the second information, and sends the second information to the terminal through the DU and RU; or the DU corresponding to the network device generates the second information, and sends the second information to the terminal through the RU. In the O-RAN system, the specific implementation of the network device sending the second information can be: the O-CU-CP corresponding to the network device generates the second information, and sends the second information to the terminal through the O-DU and O-RU; or the O-DU corresponding to the network device generates the second information, and sends the second information to the terminal through the O-RU.

[0246] It is understandable that the network device may configure one or more reference signal resource groups for the terminal. The multiple reference signal resources in each reference signal resource group may be determined according to the above rules, and examples are not given one by one.

[0247] It can be seen that the terminal can also determine one or more reference signal resource groups based on the configuration information of each CC and the above rules. Therefore, the configuration information of the multiple CCs can also be regarded as an implicit indication of the multiple reference signal resources in the reference signal resource group. Since the network device originally needs to configure reference signal resources for each CC, on this basis, the rules satisfied by the multiple reference signal resources in the reference signal resource group are indicated by the protocol pre-definition or the second information, which can save signaling overhead compared to the previous display indication method.

[0248] It should be understood that the first information includes configuration information of multiple CCs, and it can also be replaced by the first information being information carrying the configuration information of the multiple CCs; or the first information indicating the configuration information of the multiple CCs; or the first information is the configuration information of the multiple CCs. This application does not limit the specific form of the first information.

[0249] Optionally, the method further includes: the network device sends third information, where the third information is used to indicate the number of reference signal resource groups configured for the multiple CCs. Correspondingly, the terminal receives the third information.

[0250] For example, in Figure 2 In the access network device shown, the specific implementation of the network device sending the third information can be: the CU-CP corresponding to the network device generates the third information, and sends the third information to the terminal through the DU and RU; or the DU corresponding to the network device generates the third information, and sends the third information to the terminal through the RU. In the O-RAN system, the specific implementation of the network device sending the third information can be: the O-CU-CP corresponding to the network device generates the third information, and sends the third information to the terminal through the O-DU and O-RU; or the O-DU corresponding to the network device generates the third information, and sends the third information to the terminal through the O-RU.

[0251] In an embodiment of the present application, the reference signal resource group is configured across CCs, and the reference signals transmitted by multiple reference signal resources of each reference signal resource group correspond to a port group. Therefore, the reference signal resource group and the port group correspond to each other, and the third information is used to indicate the number of reference signal resource groups configured for multiple CCs. It can also be understood that the third information is used to indicate the number of port groups configured for multiple CCs.

[0252] In one example, the third information is carried in the reference signal configuration information. Accordingly, the network device sends the third information to the terminal, including: the network device sends the reference signal configuration information to the terminal, the reference signal configuration information carries the third information, or the reference signal configuration information includes an indication of the number of port groups. Accordingly, the terminal receives the reference signal configuration information from the network device.

[0253] As mentioned above, the reference signal configuration may include two parts: reference signal resource configuration and reference signal reporting configuration. Accordingly, the reference signal configuration information can be used to configure reference signal resources and reference signal reporting. For example, in downlink channel measurement, reference signal resources may include NZP-CSI-RS resources, and reference signal reporting may include CSI reporting. One possible form of reference signal resource configuration is the configuration information of the NZP-CSI-RS resources shown above. For the specific content of NZP-CSI-RS resources and CSI reporting, please refer to the relevant description in the above terminology introduction, which will not be repeated here.

[0254] In the embodiment of the present application, the reference signal resource configuration may include: configuration of reference signal port groups (which may be referred to as port groups, or reference signal resource groups), configuration of CCs, etc. The configuration of the port groups may include an indication of the number of port groups, and an indication of the port numbers and / or the number of ports included in each port group. The port groups may include: port groups across CCs and port groups within the same CC. For example, the number of port groups across CCs is K. g , the number of port groups in the same CC is K s , the number of CCs is C, K g , K s , C are both positive integers. For the port groups in the same CC, the number of ports in the kth port group on the cth CC can be P CSI-RS,k (c), k = 0, 1, ..., K s -1;c=0,1,…,C-1;P CSI-RS,k(c) is a positive integer. It should be noted that the port group across CCs is also a port group corresponding to multiple CCs. Since the multiple reference signal resources in each reference signal resource group in the present application correspond to multiple CCs, and the multiple reference signals transmitted on the multiple reference signal resources correspond to the same port group, the port group is a port group corresponding to multiple CCs, that is, a port group across CCs. The port group within the same CC is different from this. Since the network device can configure one or more reference signal resource sets for a CC, the reference signals transmitted on the reference signal resources in the one or more reference signal resource sets may correspond to the same port group, which is a port group corresponding to one CC. It should be understood that the present application is mainly described for cross-CC port groups. In the absence of conflict, the solution in the present application can also be applied to the scenario of the same CC port group to form more embodiments.

[0255] The cross-CC port group corresponds to the reference signal resource group, and its specific configuration has the following possible situations:

[0256] One possible scenario is that multiple ports in the same port group use the same number of ports when sending reference signals on different CCs corresponding to the same reference signal resource group. For example, multiple reference signal resources in the same reference signal resource group correspond to two CCs, for example, CC#0 and CC#1, and the reference signals transmitted on multiple reference signal resources in the reference signal resource group correspond to the same port group, which may include 16 ports. The network device may use 8 ports in the port group to send reference signals on CC#0, and use 16 ports in the port group to send reference signals on CC#1.

[0257] Another possible situation is that multiple ports in the same port group use different numbers of ports when sending reference signals on different CCs corresponding to the same reference signal resource group. For example, multiple reference signal resources in the same reference signal resource group correspond to two CCs, for example, CC#0 and CC#1, and the reference signals transmitted on multiple reference signal resources in the reference signal resource group correspond to the same port group, which may include 16 ports, and the network device may use the 16 ports in the port group to send reference signals on both CC#0 and CC#1. The above 16 ports are only examples.

[0258] In another implementation, the number of ports included in a cross-CC port group may be 8 ports, 32 ports, 48 ​​ports, 64 ports, 96 ports, or 128 ports.

[0259] In another implementation, the number of ports included in a cross-CC port group does not exceed N. For example, N may be 128 or 256.

[0260] In another implementation, the number of port groups across CCs (or the number of reference signal resource groups) does not exceed X. For example, X may be 2 or 4.

[0261] Since the embodiments of the present application mainly involve a port group across CCs, unless otherwise specified below, the port group can be understood as a port group across CCs.

[0262] For each port group across CCs, a port group may include multiple ports, and these multiple ports correspond to a transmission method, or a transmission mode, or a transmission beam. Therefore, a reference signal can be said to correspond to a transmission method, a transmission mode, or a transmission beam. Among them, the transmission method represents digital weighting (or digital weighting component) and / or analog weighting, that is, different transmission methods may correspond to different digital weights, or different analog weights, or a combination of different digital weights and different analog weights (or, transmission spatial filtering, or spatial filtering); or that is, the same transmission method corresponds to the same digital weights, or the same analog weights, or a combination of the same digital weights and the same analog weights (or, transmission spatial filtering, or spatial filtering).

[0263] In the present application, each reference signal can be sent through a port group, so each reference signal can be said to correspond to a port group. Each port group corresponds to a transmission method, or a transmission mode, or a transmission beam. Since multiple reference signals transmitted by multiple reference signal resources in each reference signal resource group correspond to the same port group, multiple reference signals transmitted by multiple reference signal resources in each reference signal resource group correspond to the same transmission method or transmission mode.

[0264] Since multiple ports in a port group correspond to a transmission method or transmission mode, the intensity of the transmitted reference signal in space is concentrated in a certain direction. Therefore, the reference signal sent by the network device through a port group can also be regarded as a beam.

[0265] In the above configuration, the network device is configured with K g A cross-CC port group, so network devices can use this K g The reference signals of different directions are sent by the port groups. The reference signal sent by a port group can be understood as a reference signal sent by a beam. Different beams can be sent by different port groups, or by the same port group based on different digital weights and / or analog weights. This application does not limit this.

[0266] In an embodiment of the present application, the reference signal reporting configuration may include an indication of the number of groups of measurement results to be reported. For example, the network device may indicate the number of groups of measurement results M measured, the number of groups of measurement results reported P, and the PMI configuration corresponding to each group of measurement results through the reference signal reporting configuration. The M groups of measurement results are based on the K g The measurement of the reference signal of the group is obtained, K g The reference signal is transmitted at K g The reference signals on the reference signal resources in the reference signal resource groups are reported. Therefore, each group of measurement results includes measurement results corresponding to multiple CCs. P can be a positive integer less than or equal to M. In other words, the reported P groups of measurement results come from the M groups of measurement results obtained by measurement. Optionally, M is equal to K g A positive integer, that is, M = K g Optionally, M is greater than K g A positive integer, that is, M>K g . About the measurement results of group M and K g Port groups (or K g The relationship between the reference signal and the reference signal will be described in detail in step 530 later and will not be described in detail for the time being.

[0267] In one example, the reference signal configuration information may be carried in an RRC message. For example, if the reference signal is a CSI-RS, the configuration of the reference signal resource in the reference signal configuration information may be configured by parameters in the information elements "CSI-ResourceConfig" and "CSI-RS-Resource" carried in the RRC message; the configuration of the reference signal reporting may be configured by parameters in the information element "CSI-ReportConfig" carried in the RRC message.

[0268] Accordingly, the above-mentioned first information and third information may be information carried in the RRC message. In this case, the two steps of the above-mentioned network device sending the first information to the terminal and the network device sending the third information to the terminal may be implemented through a single sending operation, and the two steps of the terminal receiving the first information from the network device and the terminal receiving the third information from the network device may be implemented through a single receiving operation. Further, the above-mentioned second information may also be information carried in the RRC message. In this case, the step of the network device sending the second information to the terminal may also be implemented through the above-mentioned single sending operation, and the step of the terminal receiving the second information from the network device may also be implemented through the above-mentioned single receiving operation.

[0269] In step 520, the network device sends reference signals on multiple reference signal resources in the reference signal resource group. Correspondingly, the terminal receives reference signals on multiple reference signal resources in the reference signal resource group.

[0270] For example, in Figure 2 In the access network device shown, the specific implementation of step 510 may be: the DU corresponding to the network device sends the reference signal through the RU. In the O-RAN system, the specific implementation of step 510 may be: the O-DU corresponding to the network device sends the reference signal through the O-RU.

[0271] The network device may send a reference signal through a beam on multiple reference signal resources in each reference signal resource group, or send a reference signal. In other words, a reference signal may correspond to a reference signal resource group and a port group.

[0272] In an embodiment of the present application, multiple reference signal resources in the same reference signal resource group correspond to multiple CCs, so the reference signal can be received by terminals on multiple CCs. Reference signals received by terminals on different CCs can be transmitted through different reference signal resources, but it can be understood that reference signal resources corresponding to different CCs belong to the same reference signal resource group. Since the network device can schedule multiple CCs for the same terminal, the terminals on different CCs may be the same terminal or different terminals, and the present application does not limit this.

[0273] The network device may determine whether to configure reference signal resource groups for multiple CCs as required, thereby obtaining the required channel measurement results. Optionally, before step 520, the method further includes: the network device sends fourth information, the fourth information being used to indicate whether to configure reference signal resource groups for multiple CCs. Accordingly, the terminal receives the fourth information. Step 520 may be specifically performed when the fourth information is used to indicate configuration of reference signal resource groups for multiple CCs.

[0274] For example, in Figure 2 In the access network device shown, the specific implementation of the network device sending the fourth information may be: the CU-CP corresponding to the network device generates the fourth information, and sends the fourth information to the terminal through the DU and RU; or the DU corresponding to the network device generates the fourth information, and sends the fourth information to the terminal through the RU. In the O-RAN system, the specific implementation of the network device sending the fourth information may be: the O-CU-CP corresponding to the network device generates the fourth information, and sends the fourth information to the terminal through the O-DU and O-RU; or the O-DU corresponding to the network device generates the fourth information, and sends the fourth information to the terminal through the O-RU.

[0275] The terminal can determine whether reference signal resources are configured for multiple CCs based on the fourth information, and then determine whether to use the method provided in this application to receive reference signals and perform channel measurement and feedback. For example, in this embodiment of the application, the fourth information can be used to indicate the configuration of reference signal resource groups for multiple CCs.

[0276] One possible design is that the fourth information and one or more of the first information, the second information and the third information can be carried in the same signaling. For example, the fourth information and the first information, the second information and the third information are all carried in the same RRC message, and the fourth information can be carried in an indication field in the RRC message, and a 1-bit value of "0" or "1" is used to indicate whether reference signal resources are configured for multiple CCs. In this case, the step of the network device sending the fourth information to the terminal can be implemented by the above-mentioned one sending operation, and the step of the terminal receiving the fourth information from the network device can be implemented by the above-mentioned one receiving operation.

[0277] Another possible design is that the fourth information and the first information are carried in different signaling, and the fourth information is sent earlier than the first information.

[0278] This application does not limit the signaling and sending time of the fourth information and the first information.

[0279] Of course, whether the network device configures reference signal resources for multiple CCs may also be predefined by the protocol. In this case, the above steps of sending and receiving the fourth information may be skipped.

[0280] In step 530, the terminal performs channel measurement based on the received reference signal to obtain measurement results corresponding to the multiple CCs.

[0281] The terminal that receives the reference signal may perform channel measurement based on the reference signal. If the terminal is scheduled with multiple CCs, the terminal may perform channel measurement based on the reference signals received on the multiple CCs to obtain measurement results corresponding to the multiple CCs respectively.

[0282] Alternatively, step 530 may also be described as the terminal measuring the received reference signal to obtain measurement results corresponding to the multiple CCs. Those skilled in the art may understand that channel measurement based on the reference signal and measurement of the reference signal are essentially the same technology.

[0283] As an example, the measurement result corresponding to each CC may include, but is not limited to, a group identifier (group ID) of a reference signal resource group, CQI, PMI, RI, LI, RSRP, RSRQ, SNR, SINR, etc. Among them, the reference signal is, for example, CSI-RS, and the group identifier of the reference signal resource group is, for example, CRGI. The group identifier can be used to indicate the reference signal resource group on which the measurement result is measured; CQI is used to indicate the channel quality of each CC in the multiple CCs corresponding to the reference signal resource group identified by the group identifier; PMI is used to indicate the precoding matrix recommended for the channel when transmitting on each CC in the multiple CCs corresponding to the reference signal resource group identified by the group identifier; RI is used to indicate the rank of the channel matrix of each CC in the multiple CCs corresponding to the reference signal resource group identified by the group identifier, that is, the number of transmission layers; LI is used to indicate the multiple CCs corresponding to the reference signal resource group identified by the group identifier. The layer with the strongest CQI in the channel of each CC in the CRGI; RSRP is used to indicate the received power of the reference signal transmitted on each CC in the multiple CCs corresponding to the reference signal resource group identified by the group identifier; RSRQ is used to indicate the received quality of the reference signal transmitted on each CC in the multiple CCs corresponding to the reference signal resource group identified by the group identifier; SNR is used to indicate the SNR of the reference signal transmitted on each CC in the multiple CCs corresponding to the reference signal resource group identified by the CRGI; SINR is used to indicate the SINR of the reference signal transmitted on each CC in the multiple CCs corresponding to the reference signal resource group identified by the CRGI.

[0284] As an example, in type II codebook feedback, the precoding matrix corresponding to one transmission layer and one subband to be fed back can be expressed as W: W = W1W2, where the dimension of W is N CSI-RS ×N3, W1 is the wideband precoding matrix, whose dimension is N CSI-RS ×2L, W1 is the subband precoding matrix, and its dimension is 2L×N3. CSI-RS represents the number of CSI-RS ports, N3 represents the number of subbands or PMIs, and 2L represents the number of discrete Fourier transform (DFT) beams (or the number of selected ports) fed back by the terminal. PMI may specifically include feedback of precoding matrices for different transmission layers and subbands.

[0285] As another example, in the codebook feedback of type II, the precoding matrix to be fed back corresponding to one transmission layer can also be expressed as W: Among them, the dimension of W is N CSI-RS ×N3, W1 is the wideband precoding matrix, whose dimension is N CSI-RS ×2L. The dimensions are 2L×M, The dimensions are 2L×M, The dimension is M×N3. It is the conjugate transpose of the M row vectors in the inverse discrete Fourier transform (IDFT) matrix (or IDFT basis) of dimension N3×N3, or the M column vectors in the DFT matrix of dimension N3×N3. M represents the number of basis vectors selected from the IDFT matrix. N CSI-RS The description of other parameters such as N3, 2L, etc. can be found in the above text and will not be repeated here. PMI may specifically include feedback of precoding matrices of different transmission layers.

[0286] For details about type II codebook feedback, please refer to the relevant chapters in 3GPP TS 38.214R15, which will not be repeated here.

[0287] Table 5 is the format of some fields in the measurement report information in the measurement method provided by this application.

[0288] Table 5

[0289]

[0290] Table 5 shows the case where the reference signal resources are CSI-RS resources and SSB resources respectively. The terminal can report one or more of the CSI-RS resource group identifier (CSI-RS resource group identifier, CRGI) or the SSB resource group identifier (SSBRGI). The CRGI and SSBRGI are two examples of group identifiers of reference signal resource groups. As shown in Table 5, the CRGI field is used to carry the CRGI, which is used to indicate the identifier of the CSI-RS resource group to be reported, and its length is G CSI-RS Indicates the maximum number of CSI-RS resource groups configured for multiple CCs. The SSBRGI field is used to carry the SSBRGI, which is used to indicate the identifier of the SSB resource group to be reported. Its length is G SSB Indicates the maximum number of SSB resource groups configured for multiple CCs. CSI-RS and G SSB It can be regarded as the upper limit of the number of reference signal resource groups configured for multiple CCs, which can be predefined. The two can be equal or different, and this application does not limit this.

[0291] In addition to PMI, the terminal can also report the RSRP corresponding to each CC. RSRP can be reported differentially. For the maximum value of RSRP, multiple bits (such as 7 bits) can be used to quantize and report its absolute value. The RSRP indicated by this field corresponds to the reference signal resource corresponding to the reference signal with the highest received power; other RSRP can be quantized and reported with fewer bits (such as 4 bits) to report the difference between it and the maximum value of RSRP.

[0292] It should be understood that the above uses PMI, CRGI, SSBRI, RSRP and other reported quantities as examples to briefly explain the measurement results, but this should not constitute any limitation to this application. This application does not limit the specific content and indication method of the measurement results.

[0293] In another example, CRGI may also be replaced by an identifier of a reference signal resource, such as CRI. It can be understood that since a reference signal resource group may include multiple reference signal resources, the above text has illustrated the correspondence between the group identifier of the reference signal resource group and the identifier of the reference signal resource included in the reference signal resource group in combination with Tables 1 to 4. The identifier of the reference signal resource may correspond to the identifier of the reference signal resource group, or the identifier of the reference signal resource group may also be determined based on the CRI. The measurement results corresponding to each CC may include, but are not limited to, CRI, CQI, PMI, RI, LI, RSRP, RSRQ, SNR, SINR, etc. CRI can be used to indicate the reference signal on which reference signal resource the measurement result is measured; CQI is used to indicate the channel quality of the CC corresponding to the reference signal resource identified by the CRI; PMI is used to indicate the precoding matrix recommended for the channel when transmitting on the CC corresponding to the reference signal resource identified by the CRI; RI is used to indicate the rank of the channel matrix of the CC corresponding to the reference signal resource identified by the CRI, that is, the number of transmission layers; LI is used to indicate the layer with the strongest CQI in the channel of the CC corresponding to the reference signal resource identified by the CRI; RSRP is used to indicate the received power of the reference signal transmitted on the CC corresponding to the reference signal resource identified by the CRI; RSRQ is used to indicate the received quality of the reference signal transmitted on the CC corresponding to the reference signal resource identified by the CRI; SNR is used to indicate the SNR of the reference signal transmitted on the CC corresponding to the reference signal resource identified by the CRI; SINR is used to indicate the SINR of the reference signal transmitted on the CC corresponding to the reference signal resource identified by the CRI. The fields of each parameter in the measurement result and their corresponding formats and bit lengths can be referred to the existing technology and will not be described in detail.

[0294] Figure 7It is a measurement result corresponding to a reference signal resource group provided in an embodiment of the present application. It should be understood that since multiple reference signal resources in a reference signal resource group correspond to multiple CCs, the measurement result corresponding to a reference signal resource group includes the measurement results corresponding to multiple CCs.

[0295] like Figure 7 As shown in the figure, the measurement result includes CRGI and the measurement result corresponding to each CC (as shown in the figure, the measurement result of CC#0, the measurement result of CC#1, the measurement result of CC#2 and the measurement result of CC#3). CRGI can be, for example, K g The group identifier of a reference signal resource group in the reference signal resource groups, and the measurement result of each CC may include but is not limited to the above-mentioned PMI, RI, CQI, LI, RSRP, RSRQ, SNR, SINR, etc., which will not be repeated here.

[0296] As mentioned above, the network equipment configures the K across CCs through reference signal resource configuration. g port groups, and report the configuration through the reference signal, indicating the number of groups of measurement results measured, M, and M = K g Or M>K g The following will explain these two situations respectively.

[0297] One possible situation is that M = K g . Network equipment in K g On multiple reference signal resources of a reference signal resource group, through K g The port group sends K g The terminal can perform channel measurement based on each set of reference signals received to obtain a set of measurement results. g The channel measurement can be performed by using the reference signal of the group, and K g In other words, K g Group measurement results and K g The reference signals of the groups correspond one to one, or in other words, K g Group measurement results and K g There is a one-to-one correspondence between the reference signal resource groups, so K g The group measurement results can be obtained by K g The reference signal resource groups are distinguished by their group identifiers. Figure 7 In the measurement results shown, CRGI can be regarded as a group identifier of a reference signal resource group, and can also be regarded as a group identifier of a group of measurement results corresponding to the reference signal resource group.

[0298] In the embodiment of the present application, since each reference signal is transmitted through multiple reference signal resources in a reference signal resource group, and the multiple reference signal resources correspond to multiple CCs, a group of measurement results obtained based on each reference signal measurement includes measurement results corresponding to multiple CCs.

[0299] Another possible situation is that M>K g . Network equipment in K g On multiple reference signal resources of a reference signal resource group, through K g The port group sends K g The terminal can perform channel measurement based on each set of reference signals received to obtain a set of measurement results. g The channel measurement can be performed by using the reference signal of the group, and K g The measurement results of the group are the same as those described above. g Each group of measurement results in the group measurement results includes measurement results corresponding to multiple CCs. The terminal may further g The group measurement results are encrypted to obtain more groups (ie, M groups) of measurement results.

[0300] Take the channel coefficient as an example. Based on K g The channel coefficients measured by the reference signals are: A0, A1, ..., A Kg-1 , where A k The dimension is N RX ×N TX , N RX Indicates the number of receiving ports of the terminal, N TX Indicates the number of transmit ports of the network device. For example, in the reference signal resource configuration in the above example, N TX is the number of CSI-RS ports N CSI-RS The terminal can use M groups of coefficients to calculate K g The M groups of channel coefficients are encrypted. The M groups of coefficients are recorded as: The mth group of coefficients can be expressed as: The superscript T represents a transposed matrix. The M groups of coefficients may be, for example, M groups of orthogonal cover codes (OCC). Based on the M groups of coefficients, K groups of channel coefficients are encrypted to obtain M groups of channel coefficients, which are: H0, H1, ..., H M-1 , where the mth group of channel coefficients H m satisfy: Among them, the M groups of coefficients can be indicated by the network device or predefined by the protocol, and this application does not limit this.

[0301] An example, K g =2, M = 4, the Kg K corresponding to the group reference signal g The group channel coefficients are A0 and A1. The M group coefficients are: is an imaginary unit. Thus, the M groups of channel coefficients can be calculated as follows: H0=A0, H1=A1, H2=jA0+A1, H3=A0+jA1.

[0302] It is understandable that the above K g Each group of channel coefficients in the group of channel coefficients includes channel coefficients corresponding to multiple CCs, and each group of channel coefficients in the encrypted M groups of channel coefficients also includes channel coefficients corresponding to multiple CCs.

[0303] Based on the method provided above, the terminal can perform similar encryption processing on other measurement results except channel information, or can also use other methods, such as interpolation, etc., to obtain K g The group measurement results are obtained to obtain M groups of measurement results.

[0304] The M groups of measurement results can also be distinguished by group identifiers. Different from the previous case, since M>K g The measurement results of group M cannot be directly applied to group K g However, the terminal and the network device can number the M groups of measurement results based on the same rule to obtain the group identifier of the M groups of measurement results. In this case, Figure 7 The CRGI in the measurement result can be replaced by the group identifier of the measurement result. g The M groups of coefficients encrypted by the group measurement results can also be known in advance. g The relationship between the group measurement results, that is, it can be determined according to the group identifier of the reported measurement result which reference signal on one or more reference signal resource groups the measurement result is related to, that is, it can be determined which one or more port groups the measurement result is related to.

[0305] In step 540, the terminal sends the measurement results corresponding to the multiple CCs to the network device. Correspondingly, the network device receives the measurement results corresponding to the multiple CCs from the terminal.

[0306] For example, in Figure 2 In the access network device shown, the specific implementation of step 540 may be: the RU corresponding to the network device receives the measurement results corresponding to the multiple CCs from the terminal, and forwards the received measurement results to the DU for processing. In the O-RAN system, the specific implementation of step 540 may be: the O-RU corresponding to the network device receives the measurement results corresponding to the multiple CCs from the terminal, and forwards the received measurement results to the O-DU for processing.

[0307] Optionally, step 540 includes: the terminal sends P groups of measurement results to the network device, each group of measurement results in the P groups of measurement results includes measurement results corresponding to multiple CCs. Accordingly, the network device receives the P groups of measurement results from the terminal. Each group of measurement results can be identified by a group identifier of a reference signal resource group, such as the CRGI or SSBRGI exemplified above.

[0308] The terminal can be connected with M (M ≥ K g ) groups of measurement results are all reported to the network device, for example, P = M, or part of the measurement results in the M groups of measurement results can be reported to the network device, for example, P < M. This application does not limit this.

[0309] The P group measurement results can be distinguished by the group identifiers of each group of measurement results in the M group measurement results. The relationship between the group identifier of the measurement results and the group identifier of the reference signal resource group (or the group identifier of the port group) has been explained in step 530 above and will not be repeated here. In some scenarios, the uplink bandwidth and downlink bandwidth scheduled by the network device to the terminal are the same, or symmetrical, and the terminal can report different measurement results on different CCs. In this way, the measurement results received by the network device on different CCs correspond to the CC, and the corresponding CC can be determined directly according to the location where the measurement results are received.

[0310] Therefore, a possible implementation of step 540 is that the terminal sends the corresponding measurement results on multiple CCs respectively. Accordingly, the network device receives the corresponding measurement results on multiple CCs respectively. In other words, the terminal sends the corresponding measurement results on each CC in the multiple CCs. Accordingly, the network device receives the corresponding measurement results on each CC in the multiple CCs. The measurement results transmitted on each CC in the multiple CCs are obtained based on the reference signal measurement received on the CC.

[0311] That is to say, each group of measurement results in the P groups of measurement results exemplified above is not sent through the same CC, and in each group of measurement results, the measurement results corresponding to each CC can be sent through the CC. In other words, the measurement results corresponding to multiple CCs in each group of measurement results can be sent through their respective corresponding CCs.

[0312] In other scenarios, the uplink bandwidth and downlink bandwidth scheduled by the network device for the terminal are different, or in other words, asymmetric, and the terminal can send measurement results corresponding to multiple CCs on a scheduled CC.

[0313] Another possible implementation of step 540 is that the terminal sends the measurement results corresponding to the multiple CCs on one CC among the multiple CCs. Correspondingly, the network device receives the measurement results corresponding to the multiple CCs on one CC among the multiple CCs.

[0314] That is to say, each group of measurement results in the P group measurement results exemplified above can be sent through a CC. Exemplarily, the CC used to send the P group measurement results can be a CC configured by the network device to the terminal for uplink transmission, or it can be one of the multiple CCs configured by the network device to the terminal for uploading. When the network device configures multiple CCs to the terminal, the CC used to transmit the P group measurement results (for example, recorded as the target CC) can be any CC among the multiple CCs; it can also be a CC indicated by the network device through signaling, such as the network device indicates the index of the target CC through signaling; it can also be a CC determined according to a preset rule, such as specifying that the target CC is the one with the smallest index value among the multiple CCs, or the one with the largest index value among the multiple CCs, or the one with the best signal quality among the multiple CCs, etc. Among them, the signal quality can be determined by one or more of the CQI, RSRP, RSRQ, SNR or SINR of the multiple CCs under the same beam, and this application is not limited to this.

[0315] One implementation manner in which the terminal sends the measurement results corresponding to the multiple CCs on one CC among the multiple CCs is that the terminal sends the measurement results corresponding to the multiple CCs on one CC among the multiple CCs, that is, the measurement results corresponding to each CC are sent respectively with CC as the granularity. Another implementation manner in which the terminal sends the measurement results corresponding to the multiple CCs on one CC among the multiple CCs is that the terminal sends the measurement results corresponding to the multiple CCs as a whole, for example, reporting an absolute value for the measurement result of one CC, reporting a differential value for the measurement results of the other CCs, and so on. This application is not limited to this.

[0316] Another possible implementation of step 540 is that the terminal sends measurement results corresponding to the multiple CCs on some CCs among the multiple CCs, and the measurement results sent on each CC in the some CCs correspond to one or more of the multiple CCs. Accordingly, the network device receives the measurement results corresponding to the multiple CCs on some CCs among the multiple CCs.

[0317] That is, each group of measurement results in the P groups of measurement results exemplified above can be sent through some CCs in the multiple CCs. The implementation method of sending the measurement results corresponding to multiple CCs on each CC can refer to the methods listed above, which will not be repeated here.

[0318] It can be seen from these two implementations that the terminal can feedback measurement results across CCs. The terminal can report the measurement results of multiple CCs together on one CC, or report the measurement results of multiple CCs on some CCs among the multiple CCs, depending on the uplink bandwidth scheduled by the network device to the terminal.

[0319] It should be understood that sending through a CC may specifically refer to sending through part or all of the resources on the CC.

[0320] Exemplarily, the measurement results corresponding to the above-mentioned multiple CCs can be carried in a CSI report, and the CSI report can be carried in uplink control information (UCI) and transmitted through a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH).

[0321] For the various different implementation methods listed above, the following Figure 8 , Fig. 9 and Fig.10 It should be understood that these drawings are only for the sake of understanding and should not constitute any limitation to the present application.

[0322] Figure 8 It is a schematic diagram of a network device sending a reference signal on multiple CCs and a terminal sending measurement results corresponding to multiple CCs provided by an embodiment of the present application. As shown in the figure, the network device uses beam #0 to send CSI-RS (i.e., an example of a reference signal) on multiple CSI-RS resources in CSI-RS resource group (i.e., an example of a reference signal resource group) #0 at time t0, and the CSI-RS resource group #1 includes four CSI-RS resources corresponding to four CCs, CC#0, CC#1, CC#2, and CC#3, and the identifiers of the four CSI-RS resources are the same, all of which are CSI-RS resource #0; at time t1, beam #1 is used to send CSI-RS on multiple CSI-RS resources in CSI-RS resource group #1, and the CSI-RS resource group #1 includes four CSI-RS resources corresponding to four CCs, CC#0, CC#1, CC#2, and CC#3, and the identifiers of the four CSI-RS resources are the same, all of which are CSI-RS resource #1; ...; at t K-1At any moment, CSI-RS is sent on multiple CSI-RS resources in CSI-RS resource group #K-1 using beam #K-1. The CSI-RS resource group #K-1 includes four CSI-RS resources corresponding to four CCs, namely CC#0, CC#1, CC#2 and CC#3, and the four CSI-RS resources have the same identifier, which is CSI-RS resource #K-1.

[0323] The uplink bandwidth and downlink bandwidth scheduled by the network device for the terminal are the same, so the terminal can send the corresponding measurement results on multiple CCs. As shown in the figure, the terminal sends the CSI report corresponding to CC#0 on CC#0, and the CSI report carries the measurement results corresponding to CC#0; the terminal sends the CSI report corresponding to CC#1 on CC#1, and the CSI report carries the measurement results corresponding to CC#1; the terminal sends the CSI report corresponding to CC#2 on CC#2, and the CSI report carries the measurement results corresponding to CC#2; the terminal sends the CSI report corresponding to CC#3 on CC#3, and the CSI report carries the measurement results corresponding to CC#3.

[0324] Fig. 9 1 is another schematic diagram of a network device sending a reference signal on multiple CCs and a terminal sending measurement results corresponding to multiple CCs provided by an embodiment of the present application. As shown in the figure, the network device sends reference signals on multiple CCs from t0 to t K The process of sending reference signals at all times is similar to Figure 8 Similar to the above, please refer to the above combination Figure 8 The description is not repeated here.

[0325] and Figure 8 Different, the uplink bandwidth and downlink bandwidth scheduled by the network device for the terminal are different, and the uplink bandwidth scheduled by the network device for the terminal is CC#0. Therefore, the terminal sends the measurement results corresponding to the above four CCs on CC#0. One possible design is that the terminal sends a CSI report on CC#0, and the CSI report includes the measurement results corresponding to CC#0, CC#1, CC#2 and CC#3; another possible design is that the terminal sends four CSI reports on CC#0, carrying the measurement results corresponding to CC#0, CC#1, CC#2 and CC#3 respectively.

[0326] Fig.10 1 is another schematic diagram of a network device sending a reference signal on multiple CCs and a terminal sending measurement results corresponding to multiple CCs provided by an embodiment of the present application. As shown in the figure, the network device sends reference signals on multiple CCs from t0 to t K-1 The process of sending reference signals at all times is similar to Figure 8 Similar to the above, please refer to the above combination Figure 8 The description is not repeated here.

[0327] and Figure 8 and Fig. 9 Different, the uplink bandwidth and downlink bandwidth scheduled by the network device for the terminal are different, and the uplink bandwidth scheduled by the network device for the terminal is CC#0 and CC#3. Therefore, the terminal sends the measurement results corresponding to the four CCs on CC#0 and CC#3. The terminal can send the measurement results corresponding to CC#0 to CC#2 through CC#0, and send the measurement results corresponding to CC#3 through CC#3; it can also send the measurement results corresponding to CC#0 through CC#0, and send the measurement results corresponding to CC#1 to CC#3 through CC#3; it can also send the measurement results corresponding to CC#0 and CC#1 through CC#0, and send the measurement results corresponding to CC#2 and CC#3 through CC#3; it can also send the measurement results corresponding to CC#0 and CC#2 through CC#0, and send the measurement results corresponding to CC#1 and CC#3 through CC#3; it can also send the measurement results corresponding to CC#0 and CC#2 through CC#0, and send the measurement results corresponding to CC#1 and CC#3 through CC#3; it can even send the measurement results corresponding to CC#0 to CC#3 through one of CC#0 or CC#3, and so on. The present application does not limit which CC is used to send the measurement results. The measurement results corresponding to each CC may be carried by one CSI report or by multiple CSI reports, and this application does not limit this. The figure shows an example of sending the measurement results corresponding to CC#0 and CC#1 by CC#0 and sending the measurement results corresponding to CC#2 and CC#3 by CC#3.

[0328] After receiving the CSI report, the network device can determine how to schedule on the multiple CCs, such as scheduling including MCS, RB resource allocation, transmit beam, receive beam, etc., based on the measurement results corresponding to the multiple CCs in the CSI report, and then perform data transmission on the multiple CCs. Since the measurement results obtained by the network device include the measurement results corresponding to the multiple CCs, the CSI on each CC can be obtained, so the degree of beam matching channel can be improved, which is conducive to improving the communication rate and efficiency.

[0329] Therefore, the embodiment of the present application configures one or more reference signal resource groups for multiple CCs so that the reference signal can be transmitted through the resources in the one or more reference signal resource groups, and the terminal can perform channel measurement and feedback based on the reference signal on each reference signal resource in the one or more reference signal resource groups. Therefore, each time the network device sends a reference signal through the reference signal resource group, it can obtain the measurement result corresponding to each CC in the multiple CCs, and can provide a more comprehensive CSI for resource scheduling, which is conducive to improving communication rate and efficiency, and is conducive to improving the performance of the entire network. Even if the network device can only schedule one beam at the same time, it can schedule the same beam for multiple CCs that have obtained CSI, which is conducive to improving the terminal experience. In addition, since the same beam can be scheduled for multiple CCs, resources on different CCs can also be used at different times, so that limited spectrum resources are fully utilized, which is conducive to improving resource utilization.

[0330] The measurement method provided in the embodiment of the present application is described in detail above in conjunction with the accompanying drawings. The device provided in the embodiment of the present application is described in detail below in conjunction with the accompanying drawings.

[0331] Figures 11 to 14 Schematic block diagram of possible communication devices provided for embodiments of the present application. These communication devices can be used to implement the functions of the terminal or network device in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments. In the embodiments of the present application, the communication device can be as follows: Figure 5 The terminal or network device in the method embodiment shown may also be a component (such as a chip, a chip system, a processor, etc.) configured in the terminal or network device, or may be a logic module or software that can implement part or all of the functions of the terminal or network device.

[0332] The present application provides a communication device such as Fig.11 As shown, the communication device 1100 includes a transceiver unit 1110 and a processing unit 1120 .

[0333] One possible design is that the communication device 1100 is used to implement the above Figure 5 The functions of the terminal in the method embodiment shown in FIG.

[0334] Exemplarily, the transceiver unit 1110 is used to execute Figure 5 In step 520, a reference signal is received on a plurality of reference signal resources, each of the plurality of reference signal resources corresponding to one of the plurality of CCs in the frequency domain; the processing unit 1120 is configured to perform Figure 5 Step 530 in step 530, performing channel measurement based on the reference signal to obtain measurement results corresponding to the multiple CCs; the transceiver unit 1110 is also used to perform Figure 5 In step 540, measurement results corresponding to the multiple CCs are sent.

[0335] Optionally, the multiple reference signal resources belong to a reference signal resource group; the transceiver unit 1110 may also be used to perform Figure 5 In step 510, first information is received, where the first information is used to indicate the multiple reference signal resources in the reference signal resource group.

[0336] Optionally, the first information includes: indexes of the multiple CCs and identifiers of reference signal resources corresponding to each CC in the reference signal resource group.

[0337] Optionally, the first information includes configuration information of each reference signal resource among the multiple reference signal resources, and the configuration information of each reference signal resource includes a group identifier of the reference signal resource group.

[0338] Optionally, the first information includes configuration information of each CC in the multiple CCs, and the configuration information of each CC includes an identifier of a reference signal resource configured for each CC; the multiple reference signal resources in the reference signal resource group satisfy one or more of multiple preset rules, and the multiple rules include: having the same identifier; having the same time domain resources; or having the same order in the corresponding configuration information of the multiple CCs.

[0339] Optionally, the multiple reference signal resources belong to a reference signal resource group; the transceiver unit 1110 can also be used to receive second information, and the second information is also used to indicate the rules satisfied by the multiple reference signal resources in the reference signal resource group.

[0340] Optionally, the multiple reference signal resources belong to a reference signal resource group; the transceiver unit 1110 may also be used to receive third information, where the third information is used to indicate the number of reference signal resource groups configured for the multiple CCs.

[0341] Optionally, the multiple reference signal resources belong to a reference signal resource group; the transceiver unit 1110 may also be used to receive fourth information, where the fourth information is used to indicate whether the reference signal resource group is configured for the multiple CCs.

[0342] Optionally, when the transceiver unit 1110 is used to send the measurement results corresponding to the multiple CCs, it can be specifically used to send the respective corresponding measurement results on the multiple CCs.

[0343] Optionally, when the transceiver unit 1110 is used to send the measurement results corresponding to the multiple CCs, it can be specifically used to send the measurement results corresponding to the multiple CCs on one CC among the multiple CCs.

[0344] For a more detailed description of the transceiver unit 1110 and the processing unit 1120, please refer to Figure 5 The relevant description in the method embodiment shown is directly obtained and will not be repeated here.

[0345] Another possible design is that the communication device 1100 is used to implement the above Figure 5 The functions of the network device in the method embodiment shown in FIG.

[0346] Exemplarily, the transceiver unit 1120 is used to execute Figure 5 In step 520, a reference signal is sent on multiple reference signal resources, each of the multiple reference signal resources corresponds to one CC in the multiple CCs in the frequency domain; the transceiver unit 1120 can be used to perform Figure 5 In step 530, measurement results corresponding to the multiple CCs are received.

[0347] Optionally, the multiple reference signal resources belong to a reference signal resource group; the transceiver unit 1110 may also be used to perform Figure 5 In step 510, first information is sent, where the first information is used to indicate the multiple reference signal resources in the reference signal resource group.

[0348] Optionally, the first information includes: indexes of the multiple CCs and identifiers of reference signal resources corresponding to each CC in the reference signal resource group.

[0349] Optionally, the processing unit 1120 may be configured to generate the first information.

[0350] Optionally, the first information includes configuration information of each reference signal resource among the multiple reference signal resources, and the configuration information of each reference signal resource includes a group identifier of the reference signal resource group.

[0351] Optionally, the first information includes configuration information of each CC in the multiple CCs, and the configuration information of each CC includes an identifier of a reference signal resource configured for each CC; the multiple reference signal resources in the reference signal resource group satisfy one or more of multiple preset rules, and the multiple rules include: having the same identifier; having the same time domain resources; or having the same order in the corresponding configuration information of the multiple CCs.

[0352] Optionally, the multiple reference signal resources belong to a reference signal resource group; the transceiver unit 1110 may also be used to send second information, where the second information is used to indicate rules satisfied by the multiple reference signal resources in the reference signal resource group.

[0353] Optionally, the processing unit 1120 may also be configured to generate the second information.

[0354] Optionally, the multiple reference signal resources belong to a reference signal resource group; the transceiver unit 1110 may also be used to send third information, where the third information is used to indicate the number of reference signal resource groups configured for the multiple CCs.

[0355] Optionally, the processing unit 1120 may also be configured to generate the third information.

[0356] Optionally, the multiple reference signal resources belong to a reference signal resource group; the transceiver unit 1110 may also be used to send fourth information, where the fourth information is used to indicate whether the reference signal resource group is configured for the multiple CCs.

[0357] Optionally, the processing unit 1120 may also be configured to generate the fourth information.

[0358] Optionally, when the transceiver unit 1110 is used to receive measurement results corresponding to the multiple CCs, it can be specifically used to receive the respective corresponding measurement results on the multiple CCs.

[0359] Optionally, when the transceiver unit 1110 is used to receive measurement results corresponding to the multiple CCs, it can be specifically used to receive the measurement results corresponding to the multiple CCs on one CC among the multiple CCs.

[0360] Optionally, the processing unit 1120 may be further configured to perform scheduling on the multiple CCs based on measurement results corresponding to the multiple CCs.

[0361] For a more detailed description of the processing unit 1110 and the transceiver unit 1120, please refer to Figure 5 The relevant description in the method embodiment shown is directly obtained and will not be repeated here.

[0362] It should be noted that the transceiver unit may also be referred to as a transceiver module, a transceiver, a transceiver, or a transceiver device, etc. The processing unit may also be referred to as a processor, a processing board, a processing module, or a processing device, etc. Optionally, the transceiver unit is used to perform the sending operation and the receiving operation on the terminal or network device side in the above method, and the device used to implement the receiving function in the communication module may be regarded as the receiving unit, and the device used to implement the sending function in the communication module may be regarded as the sending unit, that is, the transceiver unit includes a receiving unit and a sending unit.

[0363] It should also be noted that, in one possible design, the aforementioned transceiver unit and / or processing unit may be implemented through a virtual module, for example, the processing unit may be implemented through a software function unit or a virtual device, and the transceiver unit may be implemented through a software function or a virtual device. In another possible design, the processing unit or the transceiver unit may also be implemented through a physical device, for example, if the device is implemented using a chip / chip circuit, the transceiver unit may be an input / output circuit and / or a communication interface, performing input operations (corresponding to the aforementioned receiving operations) and output operations (corresponding to the aforementioned sending operations); the processing unit is an integrated processor or microprocessor or integrated circuit.

[0364] The division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional module in each example of the embodiments of the present application may be integrated into a processor, or may exist physically separately, or two or more modules may be integrated into one module. The above-mentioned integrated modules may be implemented in the form of hardware or in the form of software functional modules.

[0365] Another communication device provided by the present application is Fig.12 As shown, the communication device 1200 includes a processor 1210. The processor 1210 can be used to execute computer programs or instructions in the memory to implement Figure 5 The method embodiment shown is a step performed by a terminal or a step performed by a network device.

[0366] Optionally, the device 1200 further includes a communication interface 1220. The processor 1210 and the communication interface 1220 are coupled to each other. It can be understood that the communication interface 1220 can be a transceiver or an input-output interface.

[0367] Optionally, the communication device 1200 may further include a memory 1230 for storing instructions executed by the processor 1210 or storing input data required for the processor 1210 to execute instructions or storing data generated after the processor 1210 executes instructions.

[0368] When the communication device 1200 is used to implement Figure 5 When performing the method shown in the figure, the processor 1210 is used to execute the functions of the above processing unit, and the communication interface 1220 is used to execute the functions of the above receiving unit and / or sending unit, for example, it can be used to execute Figure 5 The communication interface 1220 is used for sending or receiving, which can be determined by whether the communication device 1200 is used for sending or receiving in the scheme executed by the communication device 1200. Figure 5 Steps 510, 520 and 540 in the method embodiment shown.

[0369] When the communication device 1200 is a chip applied to a terminal, the chip implements the functions of the terminal in the above method embodiment. The chip of the terminal receives a signal from other modules in the terminal (such as a radio frequency module or an antenna), and the signal may be sent to the terminal by a network device; or the chip of the terminal sends a signal to other modules in the terminal (such as a radio frequency module or an antenna), and the signal may be sent to the network device by the terminal.

[0370] When the communication device 1200 is a chip applied to a network device, the chip implements the functions of the network device in the above method embodiment. The chip of the network device receives a signal from other modules (such as a radio frequency module or an antenna) in the network device, and the signal may be sent by the terminal to the network device; or the chip of the network device sends a signal to other modules (such as a radio frequency module or an antenna) in the network device, and the signal may be sent by the network device to the terminal.

[0371] It can be understood that when the communication device 1200 is a terminal or a network device, the communication interface 1220 can be a transceiver, which can specifically include a transmitter and a receiver, the transmitter is used to send signals, and the receiver is used to receive signals. When the communication device 1200 is a chip applied to a terminal or a network device, the communication interface 1220 can be an input-output circuit, a bus, a module, a pin, or other types of communication interfaces, wherein the input circuit in the input-output circuit can be used for receiving, and the output interface can be used for sending.

[0372] It should be understood that Fig.12 In the communication device 1200 shown, the processor 1210 may correspond to the processing unit 1110 in the above communication device 1100 , and the communication interface 1220 may correspond to the transceiver unit 1120 in the above communication device 1100 .

[0373] It should also be understood that the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, which can be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. The processor 1210 may operate in conjunction with the memory 1230. The specific connection medium between the processor 1210, the communication interface 1220 and the memory 1230 is not limited in the embodiments of the present application.

[0374] Optionally, the processor 1210, the communication interface 1220 and the memory 1230 are interconnected via a bus. The bus may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. Fig.13 Schematic diagram of the structure of the terminal provided in the embodiment of the present application. Fig.13 As shown, the terminal 1300 can be applied to Figure 1 In the system shown, the functions of the terminal in the above method embodiment are performed. As shown in the figure, the terminal 1300 includes a processor 1301 and a transceiver 1302. Optionally, the terminal 1300 also includes a memory 1303. Among them, the processor 1301, the transceiver 1302 and the memory 1303 can communicate with each other through an internal connection path to transmit control and / or data signals. The memory 1303 is used to store computer programs, and the processor 1301 is used to call and run the computer program from the memory 1303 to control the transceiver 1302 to send and receive signals. Optionally, the terminal 1300 may also include an antenna 1304 for sending the uplink data or uplink control signaling output by the transceiver 1302 through a wireless signal.

[0375] The processor 1301 and the memory 1303 may be combined into a processing device, and the processor 1301 is used to execute the program code stored in the memory 1303 to implement the above functions. In specific implementation, the memory 1303 may also be integrated into the processor 1301, or independent of the processor 1301. Fig.11 The processing unit in Fig.12 The processor in corresponds to .

[0376] The transceiver 1302 can be used with Fig.11 The transceiver unit in Fig.12 The communication interface in the communication device 1302 may also be referred to as a transceiver unit. The transceiver 1302 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). The receiver is used to receive signals, and the transmitter is used to transmit signals.

[0377] It should be understood that Fig.13 The terminal 1300 shown is capable of implementing Figure 5The illustrated method embodiment involves various processes of the terminal. The operations and / or functions of various modules in the terminal 1300 are respectively for implementing the corresponding processes in the above method embodiment. For details, please refer to the description in the above method embodiment. To avoid repetition, the detailed description is appropriately omitted here.

[0378] The processor 1301 can be used to execute the actions implemented by the terminal in the previous method embodiment, and the transceiver 1302 can be used to execute the actions of the terminal sending to or receiving from the network device described in the previous method embodiment. Please refer to the description in the previous method embodiment for details, which will not be repeated here.

[0379] Optionally, the terminal 1300 may further include a power supply 1305 for providing power to various devices or circuits in the terminal. In the embodiment of the present application, a rectifier may be connected between the power supply 1305 and the antenna 1304. After the electromagnetic wave signal is received by the antenna 1304 and converted into an alternating current signal, it may be further converted into a direct current signal by the rectifier and then output to the power supply 1305.

[0380] In addition, in order to make the functions of the terminal more complete, the terminal 1300 may also include one or more of an input unit 1306, a display unit 1307, an audio circuit 1308, a camera 1309 and a sensor 1310, and the audio circuit may also include a speaker 1308a, a microphone 1308b, etc.

[0381] Fig.14 It is a structural diagram of a network device provided in the example of the present application, for example, it may be a structural diagram of a base station. Fig.14 The base station 1400 shown can be applied to Figure 1In the system shown, the functions of the network device in the above method embodiment are executed. As shown in the figure, the base station 1400 may include one or more of the following: one or more (DU+RU) 1410, one or more CU 1420. CU 1420 can communicate with the next generation core network (NG core). The DU may include at least one antenna 1411, at least one radio unit 1412, at least one processor 1413 and at least one memory 1414. The DU part is mainly used for receiving and transmitting radio frequency signals, converting radio frequency signals to baseband signals, and partial baseband processing. CU 1420 may include at least one processor 1422 and at least one memory 1421. CU 1420 and DU may communicate through an interface. Among them, the control plane (CP) interface may be Fs-C, such as F1-C, and the user plane (UP) interface may be Fs-U, such as F1-U. DU and RU may cooperate to jointly implement the functions of the physical (PHY) layer. A DU may be connected to one or more RUs. The functions of DU and RU can be configured in a variety of ways according to the design. For example, DU is configured to implement baseband functions, and RU is configured to implement mid-RF functions. For another example, DU is configured to implement high-level functions in the PHY layer, and RU is configured to implement low-level functions and RF functions in the PHY layer. The high-level functions in the PHY layer may include a portion of the functions of the PHY layer, which is closer to the MAC layer, and the low-level functions in the PHY layer may include another portion of the functions of the PHY layer, which is closer to the mid-RF side.

[0382] The CU 1420 is mainly used for baseband processing and controlling the base station. The DU and CU 1420 can be physically arranged together or physically separated, that is, a distributed base station. The CU 1420 is the control center of the base station and can correspond to Fig.11 The processing unit in Fig.12 The processor in the CU 1420 may also be referred to as a processing unit, which is mainly used to complete the baseband processing function. For example, the CU 1420 may be used to control the base station to execute the operation flow of the access network device in the above method embodiment.

[0383] Specifically, the baseband processing on the CU and DU can be divided according to the protocol layer of the wireless network, for example, the functions of the packet data convergence protocol (PDCP) layer and above are set in the CU, and the functions of the protocol layers below the PDCP, such as the RLC layer and the MAC layer, are set in the DU. For another example, the CU implements the functions of the RRC layer and the PDCP layer, and the DU implements the functions of the RLC layer, the MAC layer, and the PHY layer.

[0384] In addition, optionally, the base station 1400 may include one or more radio frequency units (RUs), one or more DUs, and one or more CUs. The DU may include at least one processor 1413 and at least one memory 1414, the RU may include at least one antenna 1411 and at least one radio frequency unit 1412, and the CU may include at least one processor 1422 and at least one memory 1421.

[0385] In one example, the CU 1420 may be composed of one or more boards, and the multiple boards may jointly support a wireless access network with a single access indication (such as a 5G network), or may respectively support wireless access networks with different access standards (such as an LTE network, a 5G network, or other networks). The memory 1421 and the processor 1422 may serve one or more boards. In other words, a memory and a processor may be separately set on each board. It may also be that multiple boards share the same memory and processor. In addition, necessary circuits may be set on each board. The DU may be composed of one or more boards, and the multiple boards may jointly support a wireless access network with a single access indication (such as a 5G network), or may respectively support wireless access networks with different access standards (such as an LTE network, a 5G network, or other networks). The memory 1414 and the processor 1413 may serve one or more boards. In other words, a memory and a processor may be separately set on each board. It may also be that multiple boards share the same memory and processor. In addition, necessary circuits may also be set on each board.

[0386] It should be understood that Fig.14 The base station 1400 shown is capable of implementing Figure 5 The illustrated method embodiment involves various processes of the network device. The operations and / or functions of various modules in the base station 1400 are respectively to implement the corresponding processes in the above method embodiment. For details, please refer to the description in the above method embodiment. To avoid repetition, the detailed description is appropriately omitted here.

[0387] The BBU 1420 can be used to perform the actions implemented by the network device described in the previous method embodiment, and the RRU 1410 can be used to perform the actions of the network device sending to or receiving from the terminal described in the previous method embodiment. Please refer to the description in the previous method embodiment for details, which will not be repeated here.

[0388] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or 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 may be a microprocessor or any conventional processor.

[0389] The memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0390] The present application also provides a communication system, which includes the aforementioned network device and terminal.

[0391] The present application also provides a computer program product, which includes: a computer program (also referred to as code or instruction), which, when executed, enables a computer to execute the following Figure 5 The method executed by the terminal or the method executed by the network device in the illustrated embodiment.

[0392] The present application also provides a computer-readable storage medium, which stores a computer program (also referred to as code or instruction). When the computer program is executed, the computer executes the following Figure 5 The method executed by the terminal or the method executed by the network device in the illustrated embodiment.

[0393] The terms "unit", "module" and the like used in this specification may be used to represent a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution.

[0394] It will be appreciated by those skilled in the art that the various illustrative logical blocks and steps described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or in combination with computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application. In the several embodiments provided in this application, it should be understood that the disclosed devices, equipment and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the unit is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0395] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0396] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0397] In the above embodiments, the functions of each functional unit can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions (programs). When the computer program instructions (programs) are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0398] If this function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard drives, ROM, RAM, magnetic disks, or optical disks.

[0399] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A measurement method, characterized in that: include: Receiving a reference signal on a plurality of reference signal resources, each of the plurality of reference signal resources corresponding to one of a plurality of component carriers CCs in the frequency domain; Perform channel measurement based on the reference signal to obtain measurement results corresponding to the multiple CCs; Sending measurement results corresponding to the multiple CCs.

2. The method according to claim 1, characterized in that The multiple reference signal resources belong to a reference signal resource group, and the method further includes: First information is received, where the first information is used to indicate the multiple reference signal resources in the reference signal resource group.

3. The method according to claim 2, characterized in that The first information includes configuration information of each CC in the multiple CCs, and the configuration information of each CC includes an identifier of a reference signal resource configured for each CC; as well as The multiple reference signal resources in the reference signal resource group satisfy one or more of a plurality of preset rules, wherein the plurality of rules include: have the same identity; have the same time domain resources; or The order in the configuration information of the corresponding multiple CCs is the same.

4. The method according to claim 3, characterized in that The method further comprises: Second information is received, where the second information is further used to indicate a rule satisfied by the multiple reference signal resources in the reference signal resource group.

5. The method according to any one of claims 1 to 4, characterized in that The multiple reference signal resources belong to a reference signal resource group, and the method further includes: Third information is received, where the third information is used to indicate the number of reference signal resource groups configured for the multiple CCs.

6. The method according to any one of claims 1 to 5, characterized in that The multiple reference signal resources belong to a reference signal resource group. Before receiving the reference signal on the multiple reference signal resources, the method further includes: Fourth information is received, where the fourth information is used to indicate whether the reference signal resource group is configured for the multiple CCs.

7. The method according to any one of claims 1 to 6, characterized in that The sending the measurement results corresponding to the multiple CCs includes: The corresponding measurement results are sent respectively on the multiple CCs.

8. The method according to any one of claims 1 to 6, characterized in that The sending the measurement results corresponding to the multiple CCs includes: The measurement results corresponding to the multiple CCs are sent on one CC among the multiple CCs.

9. A measurement method, characterized in that: include: Sending a reference signal on a plurality of reference signal resources, each of the plurality of reference signal resources corresponding to one of a plurality of component carriers CCs in the frequency domain; Measurement results corresponding to the plurality of CCs are received.

10. The method according to claim 9, characterized in that The multiple reference signal resources belong to a reference signal resource group, and the method further includes: First information is sent, where the first information is used to indicate the multiple reference signal resources in the reference signal resource group.

11. The method according to claim 10, characterized in that The first information includes configuration information of each CC in the multiple CCs, and the configuration information of each CC includes an identifier of a reference signal resource configured for each CC; as well as The multiple reference signal resources in the reference signal resource group satisfy one or more of a plurality of preset rules, wherein the plurality of rules include: have the same identity; have the same time domain resources; or The order in the configuration information of the corresponding multiple CCs is the same.

12. The method according to claim 11, characterized in that The method further comprises: Second information is sent, where the second information is further used to indicate a rule satisfied by the multiple reference signal resources in the reference signal resource group.

13. The method according to any one of claims 9 to 12, characterized in that The multiple reference signal resources belong to a reference signal resource group, and the method further includes: Third information is sent, where the third information is used to indicate the number of reference signal resource groups configured for the multiple CCs.

14. The method according to any one of claims 9 to 13, characterized in that The multiple reference signal resources belong to a reference signal resource group, and before sending the reference signal on the multiple reference signal resources, the method further includes: Sending fourth information, where the fourth information is used to indicate whether to configure the reference signal resource group for the multiple CCs.

15. The method according to any one of claims 9 to 14, characterized in that The receiving measurement results corresponding to the multiple CCs includes: The corresponding measurement results are received respectively on the multiple CCs.

16. The method according to any one of claims 9 to 14, characterized in that The receiving measurement results corresponding to the multiple CCs includes: The measurement results corresponding to the multiple CCs are received on one CC among the multiple CCs.

17. The method according to claim 2 or 10, characterized in that The first information includes: indexes of the multiple CCs and identifiers of reference signal resources corresponding to each CC in the reference signal resource group.

18. The method according to claim 2 or 10, characterized in that The first information includes: configuration information of each reference signal resource among the multiple reference signal resources, and the configuration information of each reference signal resource includes a group identifier of the reference signal resource group.

19. The method of any one of claims 2, 3, 10, 11, 17 or 18, wherein: The first information is carried in a signaling for configuring a non-zero power channel state information reference signal resource NZP-CSI-RS-Resource, or the first information is carried in a signaling for configuring a non-zero power channel state information reference signal resource set NZP-CSI-RS-ResourceSet.

20. A communication device, characterized in that: The method comprises a unit for implementing the method according to any one of claims 1 to 8, 17 to 19, or a unit for implementing the method according to any one of claims 9 to 16, 17 to 19.

21. A communication device, characterized in that: It includes a processor and a communication interface, wherein the communication interface is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, and the processor is used to implement the method as described in any one of claims 1 to 8 and 17 to 19 through logic circuits or execution code instructions, or to implement the method as described in any one of claims 9 to 16 and 17 to 19.

22. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 8, 17 to 19 is executed, or the method according to any one of claims 9 to 16, 17 to 19 is executed.

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