Communication methods, communication devices, and electronic devices

Abstract

In this application, a communication method, a communication device, and an electronic device are disclosed. The method includes the following contents: receive a first message, the first message includes channel state information (CSI) report configuration information, the CSI report configuration information includes a target codebook type, and the target codebook type is a codebook type supporting a coherent joint transmission scheme; send a second message, the second message includes a CSI report, and the CSI report is obtained by a user equipment based on the first message. The communication method of the present application can effectively solve the problem of specific configuration and measurement for CSI measurement under a coherent joint transmission scheme, and is helpful for the application of the coherent joint transmission scheme.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and particularly to communication methods, communication devices, and electronic devices.

Background Art

[0002] In a wireless communication system between a user equipment (UE) and a network device, in order to support dynamic scheduling and downlink multiple input multiple output (MIMO) transmission technologies, the user equipment needs to measure channel state information (CSI) and report it to the network device. The channel state information enables the wireless communication system to adapt to the current channel conditions and provides assurance for the high communication quality of the multi-antenna system that supports MIMO technology.

[0003] With the continuous popularization of MIMO technology, the coordinated multipoint transmission (CoMP) transmission technology has gradually become known because it can effectively solve the problem of interference between cells and improve the cell-edge user throughput. As one of the mainstream schemes of the coordinated multipoint transmission technology, the application of the coherent joint transmission (CJT) scheme has also gradually expanded. However, in a wireless communication system realized based on the coherent joint transmission scheme, specific setting information regarding CSI measurement has not yet been proposed in the current technology. Therefore, it is necessary to propose a specific setting and measurement mechanism for CSI measurement in the coherent joint transmission scheme.

Summary of the Invention

[0004] Embodiments of this application provide a communication method, a communication device, and an electronic device. These embodiments effectively solve the problems related to the specific setup and measurement of CSI measurements under a coherent co-transmission scheme, thereby contributing to the application of the coherent co-transmission scheme.

[0005] In a first embodiment, this application provides a communication method applicable to user equipment (UE). The method includes the following: The first message is received. The first message contains CSI reporting configuration information, which includes the target codebook type, and the target codebook type is the codebook type for the coherent co-transmission scheme. A second message is sent. The second message includes a CSI report, which is retrieved by the user's equipment based on the first message.

[0006] In conjunction with the first embodiment, in one selectable embodiment, the CSI report includes a codebook, and the codebook type of the codebook is the target codebook type.

[0007] To make it understandable, the inclusion of a codebook in the above embodiments may be understood as including a precoding matrix indicator (PMI), including a codebook indicated by a PMI, including a PMI belonging to a codebook, including a codebook indicator, including a precoding matrix indicated by a PMI, including a precoding matrix indicated by a PMI belonging to a codebook, including a PMI indicating a codebook, and including a PMI indicating a precoding matrix belonging to a codebook.

[0008] In conjunction with the first embodiment, in one selectable embodiment, the first message further includes CSI measurement resource information, the CSI measurement resource information includes N1 channel measurement resources, where N1 is a positive integer greater than or equal to 1.

[0009] In conjunction with the first embodiment, in one selectable embodiment, the CSI measurement resource information includes N2 channel measurement resource sets, each of the N2 channel measurement resource sets includes one or more channel measurement resources, and the total number of channel measurement resources included in the N2 channel measurement resource sets is N1, where N2 is a positive integer greater than or equal to 1.

[0010] In connection with the first embodiment, in one selectable embodiment, the total number of ports of one or more channel measurement resources included in any one of the N2 channel measurement resource sets is 32 or less.

[0011] In conjunction with the first embodiment, in one selectable embodiment, the first message further includes a first threshold, the CSI report includes indication information for N3 channel measurement resources, and the difference or absolute value of the difference in channel measurement results corresponding to any two of the N3 channel measurement resources is less than or equal to the first threshold, where N3 is less than or equal to N1.

[0012] In conjunction with the first embodiment, in one selectable embodiment, the CSI measurement resource information does not include interference measurement resources related to the CSI reporting settings information.

[0013] In conjunction with the first embodiment, in one selectable embodiment, the CSI measurement resource information includes one or more interference measurement resources related to the CSI reporting configuration information.

[0014] In conjunction with the first embodiment, in one selectable embodiment, N1 channel measurement resources include N4 first channel measurement resources, the N4 first channel measurement resources are the channel measurement resources of the N1 channel measurement resources other than N5 second channel measurement resources, the indication information of the N5 second channel measurement resources is included in the CSI report, and the N4 first channel measurement resources are used as interference measurement resources for CSI measurement by user equipment.

[0015] In conjunction with the first embodiment, in one selectable embodiment, one or more interference measurement resources related to CSI reporting settings information included in the CSI measurement resource information are not used for CSI measurement by user equipment.

[0016] In conjunction with the first embodiment, in one selectable embodiment, the instruction information for N1 channel measurement resources is included in the CSI report, and one or more interference measurement resources related to the CSI report setting information, included in the CSI measurement resource information, are used for CSI measurement by the user equipment.

[0017] In conjunction with the first embodiment, in one selectable embodiment, the coherent co-transmission scheme is implemented based on multiple stations.

[0018] In a second embodiment, the present application provides a communication method which can be applied to a network device. The method includes the following: Send the first message. The first message contains CSI reporting configuration information, which includes at least a target codebook type, and the target codebook type is the codebook type for the coherent co-transmission scheme. A second message is received. The second message contains a CSI report, which is obtained by the user's equipment based on the first message.

[0019] In conjunction with the second embodiment, in one selectable embodiment, the CSI report includes a codebook, and the codebook type of the codebook is the target codebook type.

[0020] To make it understandable, the inclusion of a codebook in the above embodiments may be understood as the inclusion of a precoding matrix indicator (PMI), the inclusion of a codebook indicated by a PMI, the inclusion of a PMI belonging to a codebook, the inclusion of a codebook indicator, the inclusion of a precoding matrix indicated by a PMI, the inclusion of a precoding matrix indicated by a PMI belonging to a codebook, the inclusion of a PMI indicating a codebook, and the inclusion of a PMI indicating a precoding matrix belonging to a codebook.

[0021] In connection with the second aspect, in one possible embodiment, the first message further includes CSI measurement resource information, the CSI measurement resource information includes N1 channel measurement resources, and N1 is a positive integer greater than or equal to 1.

[0022] In connection with the second aspect, in one possible embodiment, the CSI measurement reso S-Info The report includes N2 sets of channel measurement resources, each of the N2 sets of channel measurement resources includes one or more channel measurement resources, and the total number of channel measurement resources included in all the channel measurement resource sets in the N2 sets of channel measurement resources is N1.

[0023] In connection with the second aspect, in one possible embodiment, the total number of ports of the one or more channel measurement resources included in any one set of channel measurement resources is 32 or less.

[0024] In connection with the second aspect, in one possible embodiment, the first message further includes a first threshold, the CSI report includes indication information of N3 channel measurement resources, the difference or absolute value of the channel measurement results corresponding to any two of the N3 channel measurement resources is less than or equal to the first threshold, and N3 is less than or equal to N1.

[0025] In connection with the second aspect, in one possible embodiment, the CSI measurement reso S-Info The report does not include interference measurement resources related to the CSI report setting information.

[0026] In connection with the second aspect, in one possible embodiment, the CSI measurement reso S-Info The report includes one or more interference measurement resources related to the CSI report setting information.

[0027] In connection with the second aspect, in one selectable embodiment, N4 first channel measurement resources are included in N1 channel measurement resources, and the N4 first channel measurement resources are channel measurement resources other than N5 second channel measurement resources among the N1 channel measurement resources. Indication information of the N5 second channel measurement resources is included in the CSI report, and the N4 first channel measurement resources are used for CSI measurement by the user equipment as interference measurement resources.

[0028] In connection with the second aspect, in one selectable embodiment, CSI measurement resour S-Info One or more interference measurement resources related to the CSI report setting information included in the CSI report are not used for CSI measurement by the user equipment.

[0029] In connection with the second aspect, in one selectable embodiment, the indication information of the N1 channel measurement resources is included in the CSI report, and one or more interference measurement resources related to the CSI report setting information included in the CSI measurement resource information are used for CSI measurement by the user equipment.

[0030] In connection with the second aspect, in one selectable embodiment, the network device includes a plurality of stations.

[0031] In a third aspect, the present application provides a communication device. The communication device can be a user equipment. The communication device includes a transceiver unit and a processing unit. The transceiver unit is configured to receive a first message. The first message includes CSI report setting information, and the CSI report setting information includes at least a target codebook type, and the target codebook type is a codebook type of a coherent joint transmission scheme. The processing unit is configured to obtain a CSI report based on the first message. The transceiver unit is further configured to transmit a second message. The second message includes the CSI report.

[0032] In a fourth embodiment, the present application provides a communication device, which may be a network device. The communication device comprises a processing unit and a transceiver unit. The processing unit is configured to generate a first message, which includes CSI reporting configuration information, which includes at least a target codebook type, the target codebook type being a codebook type for a coherent joint transmission scheme. The transceiver unit is configured to transmit the first message. The transceiver unit is further configured to receive a second message, which includes a CSI report, the CSI report being acquired by user equipment based on the first message.

[0033] In a fifth embodiment, the application further provides a chip which may be the user device itself or a chip in the user device. The chip is configured to receive a first message which includes CSI reporting configuration information which includes at least a target codebook type which is a codebook type for a coherent joint transmission scheme. The chip is configured to transmit a second message which includes a CSI report which is obtained by the user device based on the first message.

[0034] In a sixth embodiment, the application further provides a chip which may be a network device itself or a chip in a network device. The chip is configured to transmit a first message which includes CSI reporting configuration information which includes at least a target codebook type which is a codebook type for a coherent joint transmission scheme. The chip is configured to receive a second message which includes a CSI report which is obtained by a user device based on the first message.

[0035] In a seventh embodiment, the application further provides a modular device comprising a transceiver module, a power supply module, a storage module, and a chip module. The transceiver module is configured to receive a first message, the first message containing CSI reporting configuration information, the CSI reporting configuration information containing at least a target codebook type, the target codebook type being a codebook type for a coherent joint transmission scheme. The power supply module is configured to supply power to the modular device. The storage module is configured to store data and instructions. The chip module is configured to retrieve a CSI report based on the first message. The transceiver module is further configured to transmit a second message, the second message containing a CSI report.

[0036] In an eighth aspect, the application further provides a modular device comprising a transceiver module, a power supply module, a storage module, and a chip module. The power supply module is configured to supply power to the modular device. The storage module is configured to store data and instructions. The chip module is configured to generate a first message. The first message includes CSI reporting configuration information, which includes at least a target codebook type, the target codebook type being a codebook type for a coherent joint transmission scheme. The transceiver module is configured to transmit the first message. The transceiver module is further configured to receive a second message, which includes a CSI report, the CSI report being acquired by a user device based on the first message.

[0037] In the ninth embodiment, the application further provides an electronic device, which may comprise a processor, memory, and transceiver. The processor, memory, and transceiver are connected to one another. The memory is configured to store a computer program, which includes program instructions. The processor is configured to call the program instructions and execute the communication method described in any one of the first embodiments or any one of the second embodiments.

[0038] In the tenth embodiment, the application further provides a computer-readable storage medium. The computer-readable storage medium stores computer-readable instructions, and when the computer-readable instructions are executed by a communication device, the communication device is instructed to execute a communication method according to the first embodiment and any possible embodiment of the first embodiment, or a communication method according to any possible embodiment of the second embodiment and any second embodiment.

[0039] The embodiments provided in the third to tenth embodiments described above are used to implement or cooperate in the implementation of the communication method provided in the first or second embodiment, thereby achieving the same or corresponding beneficial effects as those of the first or second embodiment, which are not described in detail herein. [Brief explanation of the drawing]

[0040] To more clearly explain the technical concept of the embodiments of this application, the following is a brief introduction to the drawings necessary for the embodiments. Clearly, the drawings described are only a few embodiments of this application, and those skilled in the art can obtain other drawings from these without any creative effort. [Figure 1] Figure 1 is a schematic diagram showing the structure of a wireless communication system according to an embodiment of this application. [Figure 2] Figure 2 is a flowchart showing a communication method according to an embodiment of this application. [Figure 3] Figure 3 is a schematic diagram showing the structure of a communication device according to an embodiment of this application. [Figure 4] Figure 4 is a schematic diagram showing the structure of an electronic device according to an embodiment of this application. [Figure 5] Figure 5 is a schematic diagram showing the structure of a modular device according to an embodiment of this application. [Modes for carrying out the invention]

[0041] The technical invention of the embodiments of this application will be described clearly and comprehensively below with reference to the drawings of the embodiments of this application. Clearly, the embodiments described are only some of the embodiments of this application, not all of them. All other embodiments that a person skilled in the art can obtain without creative effort based on the embodiments of this application are all within the scope of protection of this application.

[0042] In this specification, the term “exemplary” means “example, embodiment, explanatory.” Any embodiment described “exemplary” should not be construed as superior to other embodiments.

[0043] Furthermore, to provide a more detailed explanation of this application, many specific details are provided in the following specific embodiments. Those skilled in the art should understand that it is possible to carry out this application even without some specific details. In some examples, methods, means, elements and circuits that are well known to those skilled in the art are not described in detail in order to emphasize the gist of this application.

[0044] Referring to Figure 1, Figure 1 is a schematic diagram showing the structure of a wireless communication system according to an embodiment of this application. As shown in Figure 1, the wireless communication system mainly includes a network device 10 and user equipment 20, and uplink and downlink transmission of data or signaling is realized between the network device 10 and the user equipment 20 using a multi-station coherent joint transmission scheme. Specifically, the network device 10 consists of a plurality of stations, for example, stations 1, 2 to N shown in Figure 1. 2These are positive integers. These N stations work together to provide services to the user device 20. To understand this, for the user device 20, these N stations correspond to one network device 10, which sends and receives data or signaling to and from the network device 10. Hereafter, for ease of understanding and description, the above N stations will be uniformly referred to as the network device 10.

[0045] Furthermore, the multi-station coherent transmission relating to this application may be a coherent transmission of multiple stations, or it may be a case where different data belonging to the same physical downlink shared channel (PDSCH) is transmitted from different stations to terminal devices, or multiple stations may be virtualized into a single station to perform transmission. To ensure that it is understood, names defined in other standards with the same meaning as above may also be applied to this application; that is, this application does not limit the names of these scenarios.

[0046] In actual embodiments, the stations according to this application (for example, stations 1 to N) may be remote radio heads (RRHs) and / or transmission and reception points (TRPs). In other words, the coherent co-transmission scheme according to this application can be implemented based on multiple RRHs or multiple TRPs. Here, the TRPs may specifically be base stations (BS). A so-called base station is a device deployed in a radio access network (RAN) to provide wireless communication functionality. For example, 2G(2 ndIn a 3G network, a device that provides base station functionality includes a base transceiver station (BTS) and a base station controller (BSC). In a 3G network, a device that provides base station functionality includes a node B and a radio network controller (RNC). In a 4G network, a device that provides base station functionality includes an evolved node B (eNB). In a wireless local area network (WLAN), a device that provides base station functionality is an access point (AP). In 5G new radio (NR), a device that provides base station functionality includes a gNB (next generation node B). Other examples include devices that provide base station functionality in future new communication systems. Note that this application does not limit the specific implementation form of the station.

[0047] The user devices relating to this application can be a variety of devices that provide voice and / or data connectivity to a user, such as a handheld device with wireless connectivity or a processing device connected to a wireless modem. Examples include mobile phones (or "cellular" phones), computers with mobile terminals, portable, pocket-sized, handheld, computer-integrated, or in-vehicle mobile devices, and smart wearable devices. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), smart bracelets, and smartwatches. Restricted devices are also included, such as devices with low power consumption, limited memory capacity, or limited computing power. Furthermore, information sensing devices such as barcodes, radio frequency identification (RFID), sensors, global positioning systems (GPS), and laser scanners are also included. The chips applied to the above devices may also be referred to as user devices. This application does not specifically limit the concrete implementation of user devices.

[0048] Furthermore, the above wireless communication system may specifically be a 5G (5th generation) communication system that supports a coherent co-transmission scheme, a 2G, 3G, or 4G communication system that supports a coherent co-transmission scheme, a satellite communication system that supports a coherent co-transmission scheme, or various other communication systems that support subsequent evolutions of the coherent co-transmission scheme, such as a 6G or 7G communication system, and this application is not specifically limited thereto.

[0049] Specific configuration information regarding CSI measurement for the wireless communication system shown in Figure 1 has not yet been proposed in current technology. Therefore, the technical problem that this application aims to solve is to provide a processing method for CSI measurement in a coherent joint transmission scheme in order to improve the applicability and practicality of the coherent joint transmission scheme in a wireless communication system.

[0050] Referring to Figure 2, Figure 2 is a flowchart of a communication method according to an embodiment of the present application. As shown in Figure 2, the method includes the following steps.

[0051] S21: The network device generates a first message containing CSI reporting configuration information.

[0052] In several selectable embodiments, the network device 10 can generate a first message containing at least CSI reporting configuration information when it determines that user equipment 20 needs to perform a CSI measurement. This first message can be used by user equipment 20 to perform a CSI measurement and report. The CSI reporting configuration information includes at least one target codebook type, which is a codebook type for a coherent co-transmission scheme. In other words, the target codebook type can be a codebook type under the assumption of a coherent co-transmission scheme. Here, the fact that the target codebook type is a codebook type for a coherent co-transmission scheme can be understood to mean that the target codebook type is applicable to a coherent coherent transmission scheme.

[0053] In a specific embodiment, if it is planned or confirmed that wireless communication with the user device 20 will be conducted using a coherent joint transmission scheme, the network device 10 can generate CSI reporting setting information applicable to the user device 20 based on network status information between the network device 10 and the user device 20 and pre-configured CSI setting rules. This CSI reporting setting information is primarily used to inform the user device 20 how it should subsequently report the CSI report it has obtained based on the first message. In particular, since a coherent joint transmission scheme is used, the CSI reporting setting information includes at least one target codebook type for the coherent joint transmission scheme, so that the CSI report subsequently reported by the user device 20 includes that target codebook type.

[0054] Exemplary, the above target codebook types may specifically be codebook types such as type II-r18, type II-PortSelection-r18, type I-MultiPanel-r18, and type I-r18 that are applied to coherent co-transmission schemes. In this specification, the above is merely an illustrative representation of target codebook types, and in actual use, such target codebook types may be any other codebook types that are applied to coherent co-transmission schemes, and this application is not limited thereto.

[0055] In one selectable embodiment, the CSI reporting configuration information may include codebook configuration information, and the target codebook type may be included in the codebook configuration information.

[0056] In one selectable embodiment, the target codebook type may also be an indicator identifier used to notify the user device 20 that a CSI measurement should be performed based on the assumption of a coherent joint transmission scheme, thereby obtaining a CSI report. In other words, by extracting the target codebook type from the CSI report setting information, the user device 20 can determine that a CSI measurement should be performed based on the assumption of a coherent joint transmission scheme, thereby obtaining a CSI report.

[0057] Therefore, to make it understandable, a subsequent CSI report reported by the user device includes a codebook, and the codebook type of said codebook is the target codebook type described above. It should be noted that the inclusion of a codebook in a so-called CSI report may also be understood as the CSI report reported by the user device 20 including a PMI, the CSI report including a codebook indicated by a PMI, the CSI report including a PMI belonging to a codebook, the CSI report including a codebook indicator, the CSI report including a precoding matrix indicated by a PMI, the CSI report including a precoding matrix indicated by a PMI belonging to a codebook, the CSI report including a PMI indicating a codebook, and the CSI report including a PMI indicating a precoding matrix belonging to a codebook.

[0058] In one selectable embodiment, the first message may further include CSI measurement resource information, which includes N1 channel measurement resources, where N1 is a positive integer greater than or equal to 1. The N1 channel measurement resources can be used for subsequent CSI measurements and calculations by the user device 20. Selectively, each of the N1 channel measurement resources may specifically be information such as a time-domain resource, frequency-domain resource, etc., corresponding to a synchronization signal block (SSB) or a CSI reference signal (i.e., CSI-RS).

[0059] Furthermore, the CSI measurement resource information includes N2 channel measurement resource sets, each of these N2 channel measurement resource sets contains one or more channel measurement resources, and the total number of channel measurement resources included in these N2 channel measurement resource sets is N1. The above N2 is a positive integer of 1 or greater. In other words, the above N1 channel measurement resources are included in the above CSI measurement resource information in the form of N2 channel measurement resource sets, and one or more channel measurement resources in the above N1 channel measurement resources form one channel measurement resource set.

[0060] Furthermore, the total number of ports for one or more channel measurement resources included in any of the N2 channel measurement resource sets mentioned above should be 32 or less. For example, assuming that channel measurement resource set A, one of the N2 channel measurement resource sets, contains 5 channel measurement resources, the total number of ports for these 5 channel measurement resources should be 32 or less.

[0061] Alternatively, the total number of ports for one or more channel measurement resources included in some of the N2 channel measurement resource sets should be 32 or less. The total number of ports for each channel measurement resource included in another part of the N2 channel measurement resource sets does not need to be specifically limited.

[0062] In one selectable embodiment, the first message may further include a pre-set threshold (for ease of distinction, the pre-set threshold will be referred to as the first threshold below). This first threshold can be used to determine the indication information of channel measurement resources included in the CSI report reported by the user device. For example, assuming that the CSI report reported by the user device includes indication information for N3 channel measurement resources, the difference or absolute value of the difference in channel measurement results corresponding to any two of these N3 channel measurement resources is less than or equal to the first threshold. Here, the N3 channel measurement resources are some or all of the N1 channel measurement resources, i.e., N3 is less than or equal to N1.

[0063] Furthermore, the channel measurement resource instruction information relating to this application is, in other words, information that can uniquely indicate the channel measurement resource, and this instruction information may be any form of implementation, such as binary numbers or symbols having different values. This application does not specifically limit the form of implementation of the channel measurement resource instruction information.

[0064] Selectively, the measurement results corresponding to the above-mentioned channel measurement resource may specifically be parameters such as reference signal received power (RSRP), reference signal received quality (RSRQ), and signal-to-noise ratio (SNR) measured by the user device 20 at this channel measurement resource. This is not specifically limited in this application.

[0065] In one selectable embodiment, the CSI measurement resource information may not include interference measurement resources related to the CSI reporting settings information. Here, the interference measurement resource may specifically be a CSI interference measurement resource (i.e., CSI-IM (CSI-interference measurement)).

[0066] To make it easier to understand, the fact that the above CSI measurement resource information does not need to include interference measurement resources related to the above CSI reporting settings information can be understood as meaning that the above CSI measurement resource information does not need to include interference measurement resources.

[0067] In one selectable embodiment, the CSI measurement resource information may include one or more interference measurement resources related to the CSI reporting settings information.

[0068] To ensure understanding, the fact that the above CSI measurement resource information may include one or more interference measurement resources related to the above CSI reporting settings information can be understood as the fact that the above CSI measurement resource information may include one or more interference measurement resources.

[0069] Similarly, one or more of the above-mentioned interference measurement resources (assuming N6 in this case) can be included in the CSI measurement resource information in the form of interference measurement resource sets, where N6 is a positive integer of 1 or more. That is, in a specific embodiment, the CSI measurement resource information may include one or more interference measurement resource sets, each interference measurement resource set may include one or more interference measurement resources, and the total number of interference measurement resources included in one or more interference measurement resource sets is N6.

[0070] In one selectable embodiment, the N1 channel measurement resources include N4 first channel measurement resources, and these N4 first channel measurement resources may be interference measurement resources. Here, these N4 first channel measurement resources are the channel measurement resources from the N1 channel measurement resources other than the N5 second channel measurement resources. The instruction information for the N5 second channel measurement resources is included in the CSI report reported by the user device 20.

[0071] For example, suppose the above N1 channel measurement resources include channel measurement resource R1, channel measurement resource R2, channel measurement resource R3, and channel measurement resource R4, and the instruction information corresponding to these channel measurement resources is r1, r2, r3, and r4, respectively. If user device 20 subsequently determines that channel measurement resources R2, channel measurement resource R3, and channel measurement resource R4 are channel measurement resources that need to be reported, that is, if the subsequently transmitted CSI report includes the instruction information r2, r3, and r4, then channel measurement resources R2, channel measurement resource R3, and channel measurement resource R4 are second channel measurement resources, and channel measurement resource R1 is the first channel measurement resource. Therefore, in the subsequent CSI measurement process, user device 20 can perform interference measurement using channel measurement resource R1 as an interference measurement resource.

[0072] If the first message includes the first threshold, the N5 second channel measurement resources correspond to the N3 channel measurement resources. If the first message does not include the first threshold, the N5 second channel measurement resources may be channel measurement resources that the user device 20 has determined from the N1 channel resources by other pre-configured rules and that need to be reported. This application does not specifically limit how the user device 20 determines the N5 second channel measurement resources.

[0073] In some selectable embodiments, when the N1 channel measurement resources include the N4 first channel measurement resources, if the CSI measurement resource information also includes one or more interference measurement resources related to the CSI report setting information, these one or more interference measurement resources do not need to be used for CSI measurement by the user device 20. That is, when both the N4 first channel measurement resources and one or more interference measurement resources related to the CSI report setting information are present, the user device 20 can perform interference measurement using only these N4 first channel measurement resources as interference measurement resources and obtain the interference measurement results necessary for generating a CSI report.

[0074] In some selectable embodiments, if the CSI measurement resource information also includes one or more interference measurement resources related to the CSI reporting setting information, these one or more interference measurement resources may be used for CSI measurement by the user equipment 20.

[0075] S22: The network device sends the first message to the user device. In response, the user device receives the first message.

[0076] In some selectable embodiments, the network device 10 can generate a first message and then transmit the first message to the user device 20.

[0077] In specific embodiments, the network device 10 may transmit the first message via higher-layer information (e.g., radio resource control (RRC) information). Alternatively, the network device 10 may trigger the user device 20 to perform CSI measurement and reporting via downlink control information (DCI) carried by a physical downlink control channel (PDCCH). To the best of our understanding, this application does not specifically limit the manner in which the network device 10 transmits the first message.

[0078] Furthermore, the user device 20 can receive the first message from the network device 10.

[0079] S23; The user device obtains a CSI report based on the first message.

[0080] In some executable embodiments, after receiving the first message, the user device 20 can analyze the first message based on the corresponding communication protocol and extract various configuration information or resource information contained in the first message, such as CSI report configuration information and CSI measurement resource information. Then, based on the various configuration information and resource information contained in the first message, the user device 20 can perform the corresponding CSI measurement and further generate the corresponding CSI report.

[0081] In one selectable embodiment, once the user device 20 extracts the target codebook type from the first message, it can then determine to perform a CSI measurement using the assumption of a coherent co-transmission scheme.

[0082] In one selectable embodiment, the user device 20 extracts CSI measurement resource information from the first message, and if it determines that the CSI measurement resource information includes N1 channel measurement resources, it can measure parameters such as SNR and RSRP for each of these N1 channel measurement resources and determine the obtained results as channel measurement results corresponding to each channel measurement resource. Note that the channel measurement results described herein are not limited to SNR and RSRP as described in the preamble, but may also include RSRQ and the like, and this application is not specifically limited thereto.

[0083] Furthermore, if the user device 20 further extracts the first threshold from the first message, it measures the measurement results corresponding to each of the N1 channel measurement resources and then calculates the difference or absolute value of the difference in the channel measurement results corresponding to any two of the channel measurement resources. Based on the difference or absolute value of the difference in the channel measurement results corresponding to any two of the N1 channel measurement resources, the user device can select N3 channel measurement resources from the N1 channel measurement resources. Here, the difference or absolute value of the difference in the channel measurement results corresponding to any two of these N3 channel measurement resources is less than or equal to the first threshold. The user device 20 can then determine that these N3 channel measurement resources are the channel measurement resources that need to be reported, that is, the subsequent CSI report should include instruction information corresponding to the N3 channel measurement resources.

[0084] For example, suppose the above N1 channel measurement resources include channel measurement resource R1, channel measurement resource R2, channel measurement resource R3, and channel measurement resource R4, and the corresponding instruction information for these channel measurement resources is r1, r2, r3, and r4, respectively, and the corresponding channel measurement results are SNR1, SNR2, SNR3, and SNR4, respectively. If user device 20 determines that the difference between SNR1 and SNR2, the difference between SNR1 and SNR3, and the difference between SNR1 and SNR4 are all less than the first threshold, the difference between SNR2 and SNR3, and the difference between SNR2 and SNR4 are all less than the first threshold, and the difference between SNR3 and SNR4 is greater than the first threshold, then user device 20 can determine that channel measurement resources R1 and R2 are channel measurement resources that need to be reported, and the subsequent CSI report should include the two instruction pieces, r1 and r2.

[0085] Furthermore, if the user device 20 extracts one or more interference measurement resources related to the CSI reporting settings information from the first message and determines that the N1 channel measurement resources include N4 first channel measurement resources, it can perform interference measurements based only on the N4 first channel measurement resources and obtain the corresponding interference measurement results. Alternatively, one or more interference measurement resources related to the CSI reporting settings information may not be used. A detailed explanation of the N4 first channel measurement resources can be found in the preceding paragraph and is therefore not provided here.

[0086] Furthermore, if user device 20 determines that instruction information corresponding to all N1 channel measurement resources is included in the CSI report (i.e., the N4 first channel measurement resources are not included), it can perform interference measurement based on one or more interference measurement resources related to the CSI report setting information included in the first message and obtain the corresponding interference measurement results.

[0087] In this specification, it should be understood that the preamble is merely an illustrative description of some steps in the process by which the user device 20 performs CSI measurement based on the first message. In actual embodiments, the user device 20 may also complete other related measurement processes based on the first message, but these are not described in detail in this application.

[0088] Based on the first message described above, the user device 20 can complete all CSI measurement processes and obtain the corresponding measurement results, and then calculate the CSI report that needs to be reported based on these measurement results. Here, the CSI report includes the CSI calculated by the user device 20, and the CSI mainly includes one or more of the following information: channel quality indicator (CQI), precoding matrix indicator (PMI), CSI-RS resource indicator (CRI), SSB resource indicator (SS / PBCH block resource indicator (SSBRI)), layer indicator (LI), and rank indicator (RI). The specific content to be included in the CSI report can be indicated by the CSI report setting information included in the first message described above, and the specific content to be included in the CSI report reported by the user device 20 is not limited in this application.

[0089] S24: The user device generates a second message, which includes a CSI report.

[0090] In some executable embodiments, the user device 20 generates a second message containing the CSI report after calculating the CSI report.

[0091] S25: The user device sends a second message to the network device. In response, the network device receives the second message.

[0092] In some executable embodiments, the user device 20 can, after generating the second message, feed the second message back to the network device 10.

[0093] Selectively, the user device 20 may transmit the second message to the network device 10 via channels such as the physical uplink control channel (PUCCH) or the physical uplink shared channel (PUSCH).

[0094] Furthermore, the network device 10 can receive a second message from the user device 20 and extract the CSI report from the second message. Based on the CSI report, the network device 10 can then perform operations such as adjusting resource scheduling and / or beam management. This application does not specifically limit the process by which the network device 10 uses the CSI report.

[0095] In this embodiment of the present application, the network device 10 sets, via a first message, the target codebook type applicable to the coherent co-transmission scheme and other relevant information for the user device 20 to obtain a CSI report, thereby resolving the specific setup and measurement challenges of CSI measurements under the coherent co-transmission scheme and facilitating the application of the coherent co-transmission scheme.

[0096] Referring to Figure 3, Figure 3 is a schematic diagram showing the structure of a communication device according to an embodiment of the present application. The communication device 30 can be used to realize the functions of a user device 20. The communication device may be the user device 20 itself or a device used in the user device 20. Here, the device used in the user device 20 may be a chip system or a chip within the communication device 30. The chip system may consist of chips and may also include chips and other discrete components. As shown in Figure 3, the communication device 30 may include a transceiver unit 31 and a processing unit 32.

[0097] The transceiver unit 31 is configured to receive a first message. The first message contains CSI reporting configuration information, which includes at least a target codebook type, the target codebook type being the codebook type of the coherent joint transmission scheme.

[0098] The processing unit 32 is configured to obtain a CSI report based on the first message.

[0099] The transceiver unit 31 is further configured to transmit a second message, which includes a CSI report.

[0100] In one selectable embodiment, the CSI report includes a codebook, the codebook type of which is the target codebook type.

[0101] In one selectable embodiment, the first message further includes CSI measurement resource information, the CSI measurement resource information includes N1 channel measurement resources, where N1 is a positive integer greater than or equal to 1.

[0102] In one selectable embodiment, the CSI measurement resource information includes N2 channel measurement resource sets, each of the N2 channel measurement resource sets includes one or more channel measurement resources, the total number of channel measurement resources included in the N2 channel measurement resource sets is N1, and N2 is a positive integer greater than or equal to 1.

[0103] In one selectable embodiment, the total number of ports of one or more channel measurement resources included in any one set of channel measurement resources is 32 or less.

[0104] In one selectable embodiment, the first message further includes a first threshold, and the CSI report includes indication information for N3 channel measurement resources, wherein the difference or absolute value of the difference in channel measurement results corresponding to any two of the N3 channel measurement resources is less than or equal to the first threshold, and N3 is less than or equal to N1.

[0105] In one selectable embodiment, the CSI measurement resource information does not include interference measurement resources related to the CSI reporting settings information.

[0106] In one selectable embodiment, the CSI measurement resource information includes one or more interference measurement resources related to the CSI reporting configuration information.

[0107] In one selectable embodiment, N1 channel measurement resources include N4 first channel measurement resources, the N4 first channel measurement resources are the channel measurement resources of the N1 channel measurement resources excluding N5 second channel measurement resources, the instruction information for the N5 second channel measurement resources is included in the CSI report, and the N4 first channel measurement resources are used as interference measurement resources for CSI measurement by the processing unit 32.

[0108] In one selectable embodiment, one or more interference measurement resources included in the CSI measurement resource information, related to CSI reporting setting information, are not used for CSI measurement by the processing unit 32.

[0109] In one selectable embodiment, the instruction information for N1 channel measurement resources is included in the CSI report, and one or more interference measurement resources related to the CSI report setting information, included in the CSI measurement resource information, are used for CSI measurement by the processing unit 32.

[0110] In one selectable embodiment, the coherent co-transmission scheme is implemented based on multiple stations.

[0111] Referring to Figure 3, the communication device 30 can be used to realize the functions of the network device 10. The communication device may be the network device 10 itself, or a device used in the network device 10. Here, the device used in the network device 10 may be a chip system or a chip within the communication device 30. The chip system may consist of chips, or it may include chips and other discrete components.

[0112] Specifically, the processing unit 32 is configured to generate a first message. The first message includes CSI reporting configuration information, which includes at least a target codebook type, the target codebook type being a codebook type for a coherent joint transmission scheme.

[0113] The transceiver unit 31 is configured to transmit the first message.

[0114] The transceiver unit 31 is further configured to receive a second message, which includes a CSI report, and the CSI report is obtained by the user equipment based on the first message.

[0115] In one selectable embodiment, the CSI report includes a codebook, the codebook type of which is the target codebook type described above.

[0116] In one selectable embodiment, the first message further includes CSI measurement resource information, the CSI measurement resource information includes N1 channel measurement resources, where N1 is a positive integer greater than or equal to 1.

[0117] In one selectable embodiment, CSI measurement resource S-Info The report contains N2 channel measurement resource sets, each of the N2 channel measurement resource sets contains one or more channel measurement resources, and the total number of channel measurement resources in all the channel measurement resource sets in the N2 channel measurement resource sets is N1.

[0118] In one selectable embodiment, the total number of ports of one or more channel measurement resources included in any one set of channel measurement resources is 32 or less.

[0119] In one selectable embodiment, the first message further includes a first threshold, and the CSI report includes indication information for N3 channel measurement resources, wherein the difference or absolute value of the difference in channel measurement results corresponding to any two of the N3 channel measurement resources is less than or equal to the first threshold, and N3 is less than or equal to N1.

[0120] In one selectable embodiment, CSI measurement resource S-Info The report does not include interference measurement resources related to CSI reporting configuration information.

[0121] In one selectable embodiment, CSI measurement resource S-Info The report includes one or more interference measurement resources related to CSI reporting configuration information.

[0122] In one selectable embodiment, N1 channel measurement resources include N4 first channel measurement resources, the N4 first channel measurement resources are the channel measurement resources of the N1 channel measurement resources excluding N5 second channel measurement resources, the instruction information for the N5 second channel measurement resources is included in the CSI report, and the N4 first channel measurement resources are used as interference measurement resources for CSI measurement by user equipment.

[0123] In one selectable embodiment, CSI measurement resource S-Info One or more interference measurement resources related to CSI reporting settings information included in the report will not be used for CSI measurements by the user's equipment.

[0124] In one selectable embodiment, the instruction information for N1 channel measurement resources is included in the CSI report, and one or more interference measurement resources related to the CSI report configuration information, included in the CSI measurement resource information, are used for CSI measurement by the user equipment.

[0125] In one selectable embodiment, the transceiver unit 31 and the processing unit 32 can be implemented by a plurality of stations.

[0126] Referring to Figure 4, Figure 4 is a schematic diagram showing the structure of an electronic device according to an embodiment of this application. As shown in Figure 4, the electronic device 40 comprises a processor 401, a memory 402, a transceiver 403, and a bus system 404.

[0127] The processor 401, memory 402, and transceiver 403 are connected by a bus system 404.

[0128] The memory 402 described above is configured to store a program. Specifically, the program may include program code, which includes computer operation instructions. Memory 402 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or compact disc read-only memory (CD-ROM). Although only one memory is shown in Figure 4, of course, multiple memories may be provided as needed. Memory 402 may also be memory in the processor 401, and is not limited thereto.

[0129] Memory 402 stores the following elements: executable modules or data structures, or subsets thereof, or extensions thereof; various operation instructions, including those used to perform various operations; and various system programs, including operating systems used to perform various basic services and to handle hardware-based tasks.

[0130] The processor 401 controls the operation of the electronic device 40. The processor 401 may be one or more central processing units (CPUs). If the processor 401 is a single CPU, it may be a single-core CPU or a multi-core CPU.

[0131] In a specific application, each component of the electronic device 40 is coupled together via a bus system 404. In addition to the data bus, the bus system 404 may further include a power bus, a control bus, and a status signal bus, etc. However, for clarity, the various types of buses in Figure 4 are labeled as bus system 404. For ease of explanation, Figure 4 is merely an example.

[0132] The methods of the user device 20 disclosed in the above embodiments, or the methods of the network device 10 disclosed in the above embodiments, can be applied to or implemented by the processor 401. The processor 401 can be an integrated circuit chip having signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by an integrated logic circuit in hardware form or by instructions in software form in the processor 401. The processor 401 can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. The processor can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any ordinary processor, etc. The steps of the methods disclosed in the embodiments of this application can be performed and completed directly by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software modules can reside in mature storage media in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers, etc. The storage media is located in memory 402. The processor 401 reads the information in memory 402 and, together with the processor hardware, performs the method of the user device 20 disclosed in the embodiments shown in Figure 3 or Figure 5, or the method of the network device 10 disclosed in the embodiments shown.

[0133] Referring to Figure 5, Figure 5 is a schematic diagram showing the structure of a module device according to an embodiment of this application. The module device 50 is capable of performing the steps relating to the user device 20 in the method embodiment described above. The module device 50 comprises a transceiver module 501, a power supply module 502, a storage module 503, and a chip module 504.

[0134] The power module 502 is configured to supply power to the module device 50. The memory module 503 is configured to store data and instructions. The transceiver module 501 is configured to perform internal communication of the module device 50, or to perform communication between the module device 50 and an external device. Specifically, the transceiver module 501 is configured to receive a first message. The first message includes CSI reporting configuration information, which includes at least a target codebook type, the target codebook type being a codebook type for a coherent joint transmission scheme. The chip module 504 is configured to obtain a CSI report based on the first message. The transceiver module 501 is further configured to transmit a second message, which includes a CSI report.

[0135] Furthermore, the chip module 504, together with the transceiver module 501, can realize other steps or functions performed by the user device 20 in one CSI measurement processing method according to this application. Specifically, the expressions of functions for the user device 20 in the embodiments described in the preceding paragraph can be referred to, and will not be described in detail here.

[0136] Referring to Figure 5, the module device 50 can further perform the steps related to the network device 10 in the method embodiment described above.

[0137] The power module 502 is configured to supply power to the module device 50. The memory module 503 is configured to store data and instructions. The transceiver module 501 is configured to perform internal communication of the module device 50, or to perform communication between the module device 50 and an external device. Specifically, the chip module 504 is configured to generate a first message. The first message includes CSI reporting configuration information, which includes at least a target codebook type, the target codebook type being a codebook type for a coherent joint transmission scheme. The transceiver module 501 is configured to transmit the first message. The transceiver module 501 is further configured to receive a second message. The second message includes a CSI report, which is acquired by the user device based on the first message.

[0138] Furthermore, the chip module 504, together with the transceiver module 501, can realize other steps or functions performed by the network device 10 in one CSI measurement processing method according to this application. Specifically, the expressions of functions for the network device 10 in the embodiments described in the preceding paragraph can be referred to, and will not be described in detail here.

[0139] Embodiments of this application further provide a chip that can perform steps related to the user device 20 in the method embodiments described above. For example, the chip is configured to receive a first message, the first message containing CSI reporting configuration information, the CSI reporting configuration information containing at least a target codebook type, the target codebook type being a codebook type for a coherent joint transmission scheme. The chip is configured to transmit a second message, the second message containing a CSI report, the CSI report being obtained by the user device based on the first message.

[0140] Furthermore, the above-mentioned chip can implement other steps or functions performed by the user device 20 in one CSI measurement processing method according to this application. Specifically, the expressions of functions for the user device 20 in the embodiments described in the preceding paragraph can be referenced, and will not be described in detail here.

[0141] Embodiments of this application further provide a chip that can perform steps related to the network device 10 in the method embodiments described above. For example, the chip is configured to transmit a first message, the first message including CSI report configuration information, the CSI report configuration information including at least a target codebook type, the target codebook type being a codebook type for a coherent joint transmission scheme. The chip is configured to receive a second message, the second message including a CSI report, the CSI report being acquired by a user device based on the first message.

[0142] Furthermore, the above-mentioned chip can implement other steps or functions performed by the network device 10 in one CSI measurement processing method according to this application. Specifically, the expressions of functions for the network device 10 in the embodiments described in the preceding paragraph can be referred to, and will not be described in detail here.

[0143] Embodiments of this application further provide a computer-readable storage medium. Instructions are stored in the computer-readable storage medium, and when these instructions are executed by a processor, the CSI measurement processing method corresponding to the user device 20 or network device 10 described in the above-described method embodiment is realized.

[0144] Embodiments of this application further provide a computer program product. When the computer program product operates on a processor, a CSI measurement processing method corresponding to the user device 20 or network device 10 in the method embodiment described above is realized.

[0145] It should be noted that, for the sake of simplification, each of the above method embodiments is expressed as a combination of a series of operations. However, it should be understood by those skilled in the art that this application is not limited to the order of operations described, and that several operations can be performed in other orders or simultaneously based on this application. Furthermore, it should be understood by those skilled in the art that all embodiments described in the specification are preferred embodiments, and such operations and modules are not necessarily required for this application.

[0146] The descriptions of each embodiment in this application are mutually referential, and each description of an embodiment has its own focus. For aspects not described in detail in one embodiment, the relevant descriptions in other embodiments can be referenced. For ease and conciseness of description, for example, the devices, functions of the devices, and operations performed according to the embodiments of this application can be referenced to the relevant descriptions in the method embodiments of this application. Each method embodiment is mutually referential, combinable, and citable, and each device embodiment is mutually referential, combinable, and citable.

[0147] Finally, the embodiments described above are used solely to illustrate the technical proposal of this application and are not intended to limit the technical proposal. Although this application has been described in detail with reference to the embodiments described above, those skilled in the art should understand the following: Those skilled in the art may still amend the technical proposals described in the embodiments above, or make equivalent substitutions for some or all of these technical features, and such amendments or substitutions will not cause the essence of the corresponding technical proposal to deviate from the scope of the technical proposal of each embodiment of this application.

Claims

1. A communication method applicable to user equipment, Receiving a first message, wherein the first message includes channel status information (CSI) reporting setting information, the CSI reporting setting information includes a target codebook type, and the target codebook type is a codebook type of a coherent co-transmission scheme, The transmission of a second message, the second message including a CSI report, the CSI report being acquired by the user device based on the first message, includes transmitting, The first message further includes CSI measurement resource information, the CSI measurement resource information includes N1 channel measurement resources, where N1 is a positive integer of 1 or more. The CSI measurement resource information includes one or more interference measurement resources related to the CSI reporting setting information. The instruction information for the N1 channel measurement resources is included in the CSI report, and one or more interference measurement resources related to the CSI report setting information, included in the CSI measurement resource information, are used for CSI measurement by the user equipment. A communication method characterized by the following features.

2. The CSI report includes a codebook, and the codebook type of the codebook is the target codebook type. The communication method according to feature 1.

3. The first message further includes a first threshold, and the CSI report includes instruction information for N3 channel measurement resources. The communication method according to feature 1.

4. A communication method applicable to network devices, Sending a first message, wherein the first message includes channel status information (CSI) reporting configuration information, and the CSI reporting configuration information includes at least a target codebook type, wherein the target codebook type is a codebook type of a coherent co-transmission scheme. Receiving a second message, the second message including a CSI report, the CSI report being acquired by the user equipment based on the first message, includes receiving, The first message further includes CSI measurement resource information, the CSI measurement resource information includes N1 channel measurement resources, where N1 is a positive integer of 1 or more. The CSI measurement resource information includes one or more interference measurement resources related to the CSI reporting setting information. The instruction information for the N1 channel measurement resources is included in the CSI report, and one or more interference measurement resources related to the CSI report setting information, included in the CSI measurement resource information, are used for CSI measurement by the user equipment. A communication method characterized by the following features.

5. The CSI report includes a codebook, and the codebook type of the codebook is the target codebook type. The communication method according to feature 4.

6. The first message further includes a first threshold, and the CSI report includes instruction information for N3 channel measurement resources. The communication method according to feature 4.

7. A communication device, The aforementioned communication device is user equipment and comprises a transceiver unit and a processing unit. The transceiver unit is configured to receive a first message, the first message includes channel status information (CSI) reporting setting information, the CSI reporting setting information includes at least a target codebook type, the target codebook type is a codebook type for a coherent co-transmission scheme, The processing unit is configured to obtain a CSI report based on the first message, The transceiver unit is further configured to transmit a second message, the second message including the CSI report, The first message further includes CSI measurement resource information, the CSI measurement resource information includes N1 channel measurement resources, where N1 is a positive integer of 1 or more. The CSI measurement resource information includes one or more interference measurement resources related to the CSI reporting setting information. The instruction information for the N1 channel measurement resources is included in the CSI report, and one or more interference measurement resources related to the CSI report setting information, included in the CSI measurement resource information, are used for CSI measurement by the user equipment. A communication device characterized by the following features.

8. A communication device, The aforementioned communication device is a network device and comprises a processing unit and a transceiver unit. The processing unit is configured to generate a first message, the first message including channel status information (CSI) reporting setting information, the CSI reporting setting information including at least a target codebook type, the target codebook type being a codebook type for a coherent co-transmission scheme. The transceiver unit is configured to transmit the first message, The transceiver unit is further configured to receive a second message, the second message including a CSI report, the CSI report being acquired by user equipment based on the first message, The first message further includes CSI measurement resource information, the CSI measurement resource information includes N1 channel measurement resources, where N1 is a positive integer of 1 or more. The CSI measurement resource information includes one or more interference measurement resources related to the CSI reporting setting information. The instruction information for the N1 channel measurement resources is included in the CSI report, and one or more interference measurement resources related to the CSI report setting information, included in the CSI measurement resource information, are used for CSI measurement by the user equipment. A communication device characterized by the following features.

9. It is an electronic device, Equipped with a processor, memory and transceiver, The processor, the memory, and the transceiver are connected to each other. The memory is configured to store a computer program, the computer program includes program instructions, and the processor is configured to call the program instructions and execute the communication method described in any one of claims 1 to 3. An electronic device characterized by the following features.

10. Electronic device, Equipped with a processor, memory and transceiver, The processor, the memory, and the transceiver are connected to each other. The memory is configured to store a computer program, the computer program includes program instructions, and the processor is configured to call the program instructions and execute the communication method described in any one of claims 4 to 6. An electronic device characterized by the following features.

11. A computer program including a computer-readable instruction, wherein when the computer-readable instruction is executed by a communication device, the communication device causes the communication device to execute the communication method described in any one of claims 1 to 3. A computer program characterized by the following features.

12. A computer program including a computer-readable instruction, wherein when the computer-readable instruction is executed by a communication device, the communication device causes the communication device to execute the communication method described in any one of claims 4 to 6. A computer program characterized by the following features.

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