Communication methods, devices and storage media

Abstract

This disclosure provides a communication method, apparatus, and storage medium. The method is executed by a network-side device and includes: sending a Radio Resource Control (RRC) message to a terminal, the RRC message including first indication information, the first indication information indicating that the Downlink Control Information (DCI) includes a first indication parameter; and sending the DCI to the terminal, the DCI including the first indication parameter, the first indication parameter indicating a set of Channel State Information Reference Signals (CSI-RS) resources. This approach allows for more refined beam training only when the network-side device actually needs to transmit data, thereby reducing the overhead of maintaining more refined beams and addressing the problem of high beam training overhead in higher frequency bands.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a communication method, apparatus and storage medium. Background Technology

[0002] With the explosive growth of wireless data traffic, solving the problem of spectrum resource shortage has become an urgent task. Currently, low-frequency spectrum resources are gradually becoming congested. In order to further expand spectrum resources, the third-generation partnership project (3GPP) has been expanding to higher spectrum since Release 17. Higher spectrum means higher path loss, which requires the use of more refined beamforming to cope with it.

[0003] However, since high-frequency beams are more precise, even slight movements of the terminal or changes in the environment can lead to retraining of the beam direction. Using the existing beam training framework would impose a huge burden on network-side equipment for beam training and maintenance. Summary of the Invention

[0004] This disclosure provides a communication method, apparatus, and storage medium. The method involves sending a Radio Resource Control (RRC) message to a terminal. The RRC message includes first indication information, which indicates that the Downlink Control Information (DCI) includes a first indication parameter. The method also sends the DCI to the terminal, where the DCI includes the first indication parameter, which indicates a set of Channel State Information Reference Signals (CSI-RS) resources. This method addresses the problem that maintaining beam direction using existing beam training frameworks incurs significant training overhead for network-side equipment.

[0005] In a first aspect, embodiments of this disclosure provide a communication method executed by a network-side device. The method includes: sending a Radio Resource Control (RRC) message to a terminal, the RRC message including first indication information, the first indication information being used to indicate that a Downlink Control Information (DCI) includes a first indication parameter; and sending the DCI to the terminal, the DCI including the first indication parameter, the first indication parameter being used to indicate a set of Channel State Information Reference Signals (CSI-RS) resources.

[0006] In this technical solution, by implementing the embodiments of this disclosure, the network-side device sends a Radio Resource Control (RRC) message to the terminal. The RRC message includes first indication information, which indicates that the Downlink Control Information (DCI) includes a first indication parameter. The network-side device also sends a DCI to the terminal, which includes the first indication parameter, indicating a set of Channel State Information Reference Signals (CSI-RS) resources. In this way, more refined beam training can be performed only when the network-side device actually needs to transmit data, thereby reducing the overhead of maintaining a more refined beam and solving the problem of high beam training overhead in higher frequency bands.

[0007] Secondly, embodiments of this disclosure provide another communication method, which is executed by a terminal. The method includes: receiving a Radio Resource Control (RRC) message from a network-side device, the RRC message including first indication information, the first indication information being used to indicate that a first indication parameter is included in the DCI; and receiving a DCI from the network-side device, the DCI including the first indication parameter, the first indication parameter being used to indicate Channel State Information Reference Signal (CSI-RS) resources.

[0008] Thirdly, embodiments of this disclosure provide another communication device that has some or all of the functions of the network-side device in the method example described in the first aspect above. For example, the communication device may have the functions of some or all of the embodiments in this disclosure, or it may have the functions of any one embodiment in this disclosure implemented individually. The functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0009] In one implementation, the communication device may include a transceiver module and a processing module, the processing module being configured to support the communication device in performing the corresponding functions described in the above method. The transceiver module is used to support communication between the communication device and other devices. The communication device may also include a storage module, which is coupled to the transceiver module and the processing module, and stores the necessary computer programs and data of the communication device.

[0010] In one implementation, the communication device includes: a transceiver module, configured to send a Radio Resource Control (RRC) message to a terminal, the RRC message including first indication information, the first indication information being used to indicate that a Downlink Control Information (DCI) includes a first indication parameter; and to send a DCI to the terminal, the DCI including the first indication parameter, the first indication parameter being used to indicate a set of Channel State Information Reference Signals (CSI-RS) resources.

[0011] Fourthly, embodiments of this disclosure provide a communication device that implements some or all of the functions of the terminal described in the second aspect above. For example, the communication device may have the functions of some or all of the embodiments in this disclosure, or it may have the functions of any one embodiment in this disclosure implemented individually. The functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0012] In one implementation, the communication device may include a transceiver module and a processing module, the processing module being configured to support the communication device in performing the corresponding functions described in the above method. The transceiver module supports communication between the communication device and other devices. The communication device may also include a storage module, coupled to the transceiver module and the processing module, which stores necessary computer programs and data for the communication device.

[0013] As an example, the processing module can be a processor, the transceiver module can be a transceiver or a communication interface, and the storage module can be a memory.

[0014] In one implementation, the communication device includes: a transceiver module, configured to receive a Radio Resource Control (RRC) message from a network-side device, the RRC message including first indication information, the first indication information being used to indicate that the DCI includes a first indication parameter; and to receive a DCI from the network-side device, the DCI including the first indication parameter, the first indication parameter being used to indicate Channel State Information Reference Signal (CSI-RS) resources.

[0015] Fifthly, embodiments of this disclosure provide a communication device including a processor that, when the processor invokes a computer program in memory, executes the method described in the first aspect.

[0016] In a sixth aspect, embodiments of this disclosure provide a communication device including a processor that, when the processor invokes a computer program in memory, executes the method described in the second aspect above.

[0017] In a seventh aspect, embodiments of this disclosure provide a communication device including a processor and a memory, the memory storing a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method described in the first aspect above.

[0018] Eighthly, embodiments of this disclosure provide a communication device including a processor and a memory storing a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method described in the second aspect above.

[0019] Ninthly, embodiments of this disclosure provide a communication device including a processor and an interface circuit. The interface circuit is configured to receive code instructions and transmit them to the processor, which is configured to execute the code instructions to cause the device to perform the method described in the first aspect above.

[0020] In a tenth aspect, embodiments of this disclosure provide a communication device including a processor and an interface circuit. The interface circuit is configured to receive code instructions and transmit them to the processor, which is configured to execute the code instructions to cause the device to perform the method described in the second aspect above.

[0021] Eleventhly, embodiments of this disclosure provide a communication system, which includes the communication device described in the third aspect and the communication device described in the fourth aspect, or the system includes the communication device described in the fifth aspect and the communication device described in the sixth aspect, or the system includes the communication device described in the seventh aspect and the communication device described in the eighth aspect, or the system includes the communication device described in the ninth aspect and the communication device described in the tenth aspect.

[0022] In a twelfth aspect, embodiments of the present invention provide a computer-readable storage medium for storing instructions for use by the aforementioned terminal, which, when executed, cause the terminal to perform the method described in the first aspect.

[0023] In a thirteenth aspect, embodiments of the present invention provide a readable storage medium for storing instructions for use by the network-side device, which, when executed, cause the network-side device to perform the method described in the second aspect.

[0024] In a fourteenth aspect, this disclosure also provides a computer program product including a computer program that, when run on a computer, causes the computer to perform the method described in the first aspect above.

[0025] In a fifteenth aspect, this disclosure also provides a computer program product including a computer program that, when run on a computer, causes the computer to perform the method described in the second aspect above.

[0026] In a sixteenth aspect, this disclosure provides a chip system including at least one processor and an interface for supporting a terminal in implementing the functions involved in the first aspect, such as determining or processing at least one of the data and information involved in the above methods. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for the terminal. The chip system may be composed of chips or may include chips and other discrete devices.

[0027] In a seventeenth aspect, this disclosure provides a chip system including at least one processor and an interface for supporting network-side devices in implementing the functions involved in the second aspect, such as determining or processing at least one of the data and information involved in the above methods. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for the network-side device. The chip system may be composed of chips or may include chips and other discrete devices.

[0028] In an eighteenth aspect, this disclosure provides a computer program that, when run on a computer, causes the computer to perform the method described in the first aspect above.

[0029] In a nineteenth aspect, this disclosure provides a computer program that, when run on a computer, causes the computer to perform the method described in the second aspect above. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments or background art of this disclosure, the accompanying drawings used in the embodiments or background art of this disclosure will be described below.

[0031] Figure 1 This is an architecture diagram of a communication system provided in an embodiment of this disclosure;

[0032] Figure 2 This is a flowchart of a communication method provided in an embodiment of this disclosure;

[0033] Figure 3 This is a flowchart of another communication method provided in an embodiment of this disclosure;

[0034] Figure 4 This is a flowchart of yet another communication method provided in this disclosure embodiment;

[0035] Figure 5 This is a flowchart of yet another communication method provided in this disclosure embodiment;

[0036] Figure 6 This is a flowchart of yet another communication method provided in this disclosure embodiment;

[0037] Figure 7 This is a flowchart of yet another communication method provided in this disclosure embodiment;

[0038] Figure 8 This is a flowchart of yet another communication method provided in this disclosure embodiment;

[0039] Figure 9 This is a flowchart of yet another communication method provided in this disclosure embodiment;

[0040] Figure 10This is a flowchart of yet another communication method provided in this disclosure embodiment;

[0041] Figure 11 This is a flowchart of yet another communication method provided in this disclosure embodiment;

[0042] Figure 12 This is a flowchart of yet another communication method provided in this disclosure embodiment;

[0043] Figure 13 This is a structural diagram of a communication device provided in an embodiment of this disclosure;

[0044] Figure 14 This is a structural diagram of another communication device provided in an embodiment of this disclosure;

[0045] Figure 15 This is a schematic diagram of the structure of a chip provided in an embodiment of this disclosure. Detailed Implementation

[0046] To facilitate understanding, the terminology used in this disclosure will be introduced first.

[0047] 1. Downlink control information (DCI)

[0048] The Downlink Control Channel (DCI) is carried by the Physical Downlink Control Channel (PDCCH). The DCI can include uplink and downlink resource allocation, hybrid automatic repeat request (HARQ) information, power control, etc. The PDCCH is a physical channel used to carry downlink scheduling information.

[0049] 2. Beam identification: In the embodiments of this disclosure, the beam identification can be represented by the resource number of the CSI-RS. This refers to informing the UE which receiving beam to use by indicating the resource number of the previously used / measured CSI-RS.

[0050] To better understand the communication method, apparatus, and storage medium disclosed in this disclosure, the communication system to which this disclosure applies will be described first.

[0051] Please see Figure 1 , Figure 1 This is a schematic diagram of the architecture of a communication system 10 provided in an embodiment of this disclosure. The communication system 10 may include, but is not limited to, a network-side device and a terminal. Figure 1The number and form of devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of this disclosure. In actual applications, there may be two or more network-side devices and two or more terminals. Figure 1 The communication system 10 shown is exemplified by including a network-side device 101 and a terminal 102.

[0052] It should be noted that the technical solutions of this disclosure can be applied to various communication systems. For example, long term evolution (LTE) systems, 5th generation (5G) mobile communication systems, 5G new radio (NR) systems, or other future new mobile communication systems.

[0053] The network-side device 101 in this disclosure is an entity on the network side used for transmitting or receiving signals. For example, the network-side device 101 can be an evolved NodeB (eNB), a transmission reception point (TRP), a next-generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. The embodiments of this disclosure do not limit the specific technology or device form used in the network-side device. The network-side device provided in this disclosure can be composed of a central unit (CU) and a distributed unit (DU). The CU can also be called a control unit. Using a CU-DU structure, the protocol layer of the network-side device, such as a base station, can be separated. Some protocol layer functions are centrally controlled by the CU, while the remaining part or all protocol layer functions are distributed in the DU, which is centrally controlled by the CU.

[0054] In this disclosure, terminal 102 is a user-side entity used to receive or transmit signals, such as a mobile phone. A terminal can also be called a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. A terminal can be a car with communication capabilities, a smart car, a mobile phone, a wearable device, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, and so on. This disclosure does not limit the specific technology or device form used in the terminal.

[0055] It is understood that the communication system described in the embodiments of this disclosure is for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and does not constitute a limitation on the technical solutions provided in the embodiments of this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this disclosure are also applicable to similar technical problems.

[0056] The communication method, apparatus, and storage medium provided in this disclosure will now be described in detail with reference to the accompanying drawings.

[0057] In related technologies, the beam training mechanism is a two-stage training method, namely wide-beam training of the synchronization signal block (SSB) and narrow-beam training after access using the channel state information reference signal (CSI-RS).

[0058] When transmitting SSBs, network-side devices use different beams for transmission. Within a synchronization signal burst set (SS burst set), different SSBs are transmitted in different directions. When a terminal accesses the network-side device, it receives the SSBs and measures the synchronization signal-reference signal received power (SS-RSRP) corresponding to each SSB, and selects an appropriate beam based on the measurement results. During random access, the terminal sends a preamble sequence at the random access timing associated with the SSB index corresponding to its selected beam direction, implicitly instructing the network-side device on the appropriate transmission beam direction.

[0059] After the terminal connects to the network, the network-side equipment configures reference signals for beam training. Different reference signals correspond to different transmit beams. The terminal receives the reference signals, measures the beam quality, selects a suitable beam direction, and reports the selection result according to the reporting settings. The network-side equipment and the terminal can use this mechanism to perform narrower beam training.

[0060] However, higher frequency bands require more precise beamforming for transmission, and even slight movements of the terminal or changes in the environment can lead to retraining of the beam orientation. Maintaining the beam orientation using the existing beam training framework would impose a significant training overhead on network-side devices.

[0061] Based on this, the present disclosure provides a communication method, apparatus, and storage medium to at least solve the technical problems existing in the above-mentioned related technologies, reduce the overhead of network-side equipment for maintaining finer beams, and solve the problem of high beam training overhead in higher frequency bands.

[0062] Please see Figure 2 , Figure 2 This is a flowchart of a communication method provided in an embodiment of this disclosure.

[0063] like Figure 2 As shown, this method is executed by a network-side device, and the method may include, but is not limited to, the following steps:

[0064] S21: Send a Radio Resource Control (RRC) message to the terminal. The RRC message includes first indication information, which indicates that the Downlink Control Information (DCI) includes a first indication parameter. Send the DCI to the terminal. The DCI includes the first indication parameter, which indicates a set of Channel State Information Reference Signals (CSI-RS) resources.

[0065] Among them, the radio resource control (RRC) message sent by the network-side device to the terminal includes first indication information. The first indication information carried by the RRC message can be newly added parameter information or a redefined version of the original parameter information in the RRC message. This disclosure embodiment does not impose specific limitations on this.

[0066] In this embodiment of the present disclosure, the network-side device can send an RRC message including first indication information to the terminal to indicate that the DCI includes the first indication parameter. After receiving the RRC message including the first indication information, the terminal can understand the first indication parameter and then perform corresponding actions according to the first indication parameter, thereby starting the three-level beam training mechanism.

[0067] The first indication parameter can be a newly added field in the DCI, used to indicate a set of Channel Information Reference Signals (CSI-RS) resources. Thus, after the network-side device sends the DCI, it can indicate a set of CSI-RS resources through the newly added first indication parameter. The network-side device can then use a finer beam to transmit each CSI-RS; for example, it can adjust the steering vector applied to the transmit antenna array to control the width of the transmission beam, thereby using a finer beamwidth to transmit each CSI-RS.

[0068] In this embodiment of the disclosure, the network-side device can transmit DCI to the terminal using a wider beamwidth. For example, the network-side device can adjust the steering vector applied to the transmit antenna array to control the width of the transmission beam, thereby transmitting DCI using a wider beamwidth. The network-side device can indicate a set of CSI-RS resources through a first indication parameter.

[0069] It should be noted that in this embodiment of the present disclosure, when the three-level beam training mechanism is not required, the network-side device does not send an RRC message including the first indication information to the terminal. At this time, the DCI may or may not include the first indication parameter. It is understood that when the DCI includes the first indication parameter, since the terminal does not receive the RRC message including the first indication information sent by the network-side device, the terminal will not be able to understand the first indication parameter in the DCI, and the terminal will not be able to perform the corresponding action according to the first indication parameter. Therefore, the three-level beam training mechanism will not be enabled.

[0070] Based on this, in this embodiment of the present disclosure, the network-side device may send an RRC message including the first indication information or an RRC message excluding the first indication information as needed, so as to activate the three-level training mechanism when data transmission is actually required, and send a DCI including the first indication parameter to the terminal for more refined beam training.

[0071] By implementing the embodiments of this disclosure, a Radio Resource Control (RRC) message is sent to the terminal. The RRC message includes first indication information, which indicates that the Downlink Control Information (DCI) includes a first indication parameter. The DCI, also including the first indication parameter, is then sent to the terminal to indicate a set of Channel State Information Reference Signals (CSI-RS) resources. In this way, more refined beam training can be performed only when the network-side equipment actually needs to transmit data, thereby reducing the overhead of maintaining more refined beams on the network-side equipment and solving the problem of high beam training overhead in higher frequency bands.

[0072] Please see Figure 3 , Figure 3 This is a flowchart of another communication method provided in an embodiment of this disclosure.

[0073] like Figure 3 As shown, this method is executed by a network-side device, and the method may include, but is not limited to, the following steps:

[0074] S31: Send a set of Channel Information Reference Signals (CSI-RS) to the terminal; wherein each CSI-RS corresponds to the resource number of a CSI-RS resource in the first indication parameter.

[0075] In this embodiment of the disclosure, the network-side device sends a set of CSI-RS to the terminal. The network-side device can use a finer beam to transmit each CSI-RS. For example, the network-side device can adjust the steering vector added to the transmitting antenna array to control the width of the transmission beam, thereby using a finer beam speed to transmit each CSI-RS.

[0076] In this process, the network-side device sends a set of CSI-RS, each CSI-RS corresponding to a resource number of a CSI-RS resource in the first indication parameter. The terminal receives a set of CSI-RS sent by the network-side device and feeds back the resource number of a CSI-RS resource corresponding to a beam. This allows the terminal to determine that the beam is the beam resource used by the CSI-RS corresponding to the resource number sent by the network-side device, so that the beam can be used when the network-side device sends information to the terminal in the future.

[0077] It should be noted that S31 can be implemented alone or in combination with any other step in the embodiments of this disclosure, such as in combination with S21 in the embodiments of this disclosure. The embodiments of this disclosure do not limit this.

[0078] Please see Figure 4 , Figure 4 This is a flowchart of another communication method provided in the embodiments of this disclosure.

[0079] like Figure 4 As shown, this method is executed by a network-side device, and the method may include, but is not limited to, the following steps:

[0080] S41: Send the Physical Downlink Shared Channel (PDSCH) to the terminal; receive the resource number of the CSI-RS corresponding to the beam fed back by the terminal on the Hybrid Automatic Repeat Request (HARQ) resource of the PDSCH.

[0081] In this embodiment of the disclosure, the network-side device sends a Physical Downlink Shared Channel (PDSCH) to the terminal, and then sends a set of CSI-RS. The network-side device will use a finer beam to transmit each CSI-RS. Each CSI-RS corresponds to a resource number of a CSI-RS resource in the first indication parameter. When the terminal receives a set of CSI-RS sent by the network-side device, it needs to feed back information about the best beam, that is, feed back the resource number of the CSI-RS resource corresponding to the beam. In this way, it can be determined that the beam is the beam resource used by the network-side device when sending the CSI-RS corresponding to the resource number, so that the beam can be used when the network-side device sends information to the terminal in the future.

[0082] The terminal can feed back the information of the beam on the HARQ resource of the PDSCH, that is, it can use the HARQ resource of the PDSCH to feed back the resource number of the CSI-RS resource corresponding to the beam.

[0083] In this embodiment of the disclosure, after receiving feedback from the terminal, the network-side device can use the feedback results for subsequent data transmission to the terminal. Thus, the network-side device can maintain a wider beam when there is no data transmission, and perform more refined beam training when data is actually transmitted. This reduces the overhead of the network-side device maintaining a more refined beam, while improving the transmission efficiency of PDSCH and solving the problem of high beam training overhead in higher frequency bands.

[0084] It should be noted that S41 can be implemented alone or in combination with any other step in the embodiments of this disclosure, such as in combination with S21 and / or S31 in the embodiments of this disclosure. The embodiments of this disclosure do not limit this.

[0085] Please see Figure 5 , Figure 5 This is a flowchart of another communication method provided in the embodiments of this disclosure.

[0086] like Figure 5 As shown, this method is executed by a network-side device, and the method may include, but is not limited to, the following steps:

[0087] S51: The RRC message also includes second indication information, which indicates that the DCI includes second indication parameters. The second indication parameters indicate the first uplink feedback resource of the CSI-RS resource number. The first uplink feedback resource is used to receive the CSI-RS resource number corresponding to the beam fed back by the terminal.

[0088] The radio resource control (RRC) message sent by the network-side device to the terminal includes first indication information and second indication information. The first indication information carried by the RRC message can be newly added parameter information or a redefined version of the original parameter information in the RRC message. The second indication information carried by the RRC message can be newly added parameter information or a redefined version of the original parameter information in the RRC message. This disclosure embodiment does not impose specific limitations on this.

[0089] In this embodiment of the present disclosure, the network-side device can send an RRC message including first indication information and second indication information to the terminal. The indication DCI includes first indication parameters and second indication parameters. After receiving the RRC message including first indication information and second indication information, the terminal can understand the first indication parameters and second indication parameters, and then the terminal performs corresponding actions according to the first indication parameters and second indication parameters, thereby starting and performing the three-level beam training mechanism.

[0090] The second indication parameter can be a newly added field in the DCI, which is used to indicate the first uplink feedback resource used by the resource number of the CSI-RS corresponding to the terminal feedback beam. Thus, after receiving the DCI including the second indication parameter, the terminal can feed back the resource number of the CSI-RS corresponding to the beam on the first uplink feedback resource.

[0091] It is understandable that after receiving an RRC message including the first indication information and the second indication information, and a DCI including the first indication parameter and the second indication parameter, the terminal can, after receiving a set of CSI-RS sent by the network-side device, determine the resource number of the CSI-RS resource corresponding to a beam, and then feed back the resource number of the CSI-RS corresponding to the beam on the first uplink feedback resource indicated by the second indication parameter.

[0092] In this embodiment of the disclosure, after the network-side device sends the DCI, it can indicate a set of CSI-RS resources through the first indication parameter. The network-side device can use a finer beam to transmit each CSI-RS, and the network-side device can receive the resource number of the CSI-RS resource corresponding to the beam fed back by the terminal on the first uplink feedback resource indicated by the second indication parameter. Then, it can use the feedback result for the current data transmission for the terminal. Thus, the network-side device can maintain a wider beam when there is no data transmission, and perform finer beam training when data is actually transmitted. This can reduce the overhead of the network-side device maintaining a finer beam and solve the problem of high beam training overhead in higher frequency bands.

[0093] It should be noted that S51 can be implemented alone or in combination with any other step in the embodiments of this disclosure, such as in combination with S21 and / or S31 in the embodiments of this disclosure. The embodiments of this disclosure do not limit this.

[0094] Please see Figure 6 , Figure 6 This is a flowchart of another communication method provided in the embodiments of this disclosure.

[0095] like Figure 6 As shown, this method is executed by a network-side device, and the method may include, but is not limited to, the following steps:

[0096] S61: Send PDSCH to the terminal on the beam fed back by the terminal, wherein the resource number of CSI-RS is received.

[0097] In this embodiment, the terminal receives a set of CSI-RS sent by the network-side device, measures each CSI-RS, determines a beam (i.e., determines the resource number of the CSI-RS corresponding to the beam), and feeds it back to the network-side device. Thus, when the network-side device receives the resource number of the CSI-RS corresponding to the beam fed back by the terminal, it sends a PDSCH to the terminal on that beam. This allows the network-side device to transmit the PDSCH using the beam fed back by the terminal, achieving the goal of transmitting the PDSCH with a finer beam, reducing the overhead of the network-side device maintaining finer beam pairs for PDSCH transmission, and improving the transmission efficiency of the PDSCH.

[0098] It should be noted that S61 can be implemented alone or in combination with any other step in the embodiments of this disclosure, such as in combination with S21 and / or S31 and / or S51 in the embodiments of this disclosure. The embodiments of this disclosure do not limit this.

[0099] In some embodiments, if the resource number of the CSI-RS corresponding to the beam fed back by the terminal is not received, a PDSCH is sent to the terminal on a first beam, which is different from the beam fed back by the terminal.

[0100] In this embodiment of the disclosure, if the network-side device does not receive the resource number of the CSI-RS corresponding to the beam fed back by the terminal, the traditional beam indication method is continued to be used to indicate the first beam to the terminal in response to the failure of the transmission of the resource number of the CSI-RS corresponding to the feedback beam. PDSCH is sent to the terminal on the indicated first beam where the transmission failed.

[0101] In some embodiments, the DCI includes an indication field for indicating the first beam transmitting the PDSCH.

[0102] In this embodiment of the disclosure, the DCI includes an indication field for indicating the first beam for transmitting PDSCH, so that the network-side device can transmit PDSCH to the terminal on the first beam.

[0103] In some embodiments, CSI-RS resources use Time Division Multiplexing (TDM) or Frequency Division Multiplexing (FDM).

[0104] In this embodiment of the disclosure, CSI-RS resources can use continuous time division multiplexing (TDM) or discontinuous TDM, or CSI-RS resources can use frequency division multiplexing (FDM).

[0105] Please see Figure 7 , Figure 7 This is a flowchart of another communication method provided in the embodiments of this disclosure.

[0106] like Figure 7 As shown, this method is executed by the terminal, and the method may include, but is not limited to, the following steps:

[0107] S71: Receive a Radio Resource Control (RRC) message from a network-side device. The RRC message includes first indication information, which indicates that the DCI includes a first indication parameter. Receive the DCI from the network-side device. The DCI includes the first indication parameter, which indicates the Channel State Information Reference Signal (CSI-RS) resource.

[0108] Among them, the radio resource control (RRC) message sent by the network-side device to the terminal includes first indication information. The first indication information carried by the RRC message can be newly added parameter information or a redefined version of the original parameter information in the RRC message. This disclosure embodiment does not impose specific limitations on this.

[0109] In this embodiment of the present disclosure, the network-side device can send an RRC message including first indication information to the terminal to indicate that the DCI includes the first indication parameter. After receiving the RRC message including the first indication information, the terminal can understand the first indication parameter and then perform corresponding actions according to the first indication parameter, thereby starting the three-level beam training mechanism.

[0110] The first indication parameter can be a newly added field in the DCI, used to indicate a set of Channel Information Reference Signals (CSI-RS) resources. Thus, after the network-side device sends the DCI, it can indicate a set of CSI-RS resources through the newly added first indication parameter. The network-side device can then use a finer beam to transmit each CSI-RS; for example, it can adjust the steering vector applied to the transmit antenna array to control the width of the transmission beam, thereby using a finer beamwidth to transmit each CSI-RS.

[0111] In this embodiment of the disclosure, the network-side device can transmit DCI to the terminal using a wider beamwidth. For example, the network-side device can adjust the steering vector applied to the transmit antenna array to control the width of the transmission beam, thereby transmitting DCI using a wider beamwidth. The network-side device can indicate a set of CSI-RS resources through a first indication parameter.

[0112] It should be noted that in this embodiment of the present disclosure, when the three-level beam training mechanism is not required, the network-side device does not send an RRC message including the first indication information to the terminal. At this time, the DCI may or may not include the first indication parameter. It is understood that when the DCI includes the first indication parameter, since the terminal does not receive the RRC message including the first indication information sent by the network-side device, the terminal will not be able to understand the first indication parameter in the DCI, and the terminal will not be able to perform the corresponding action according to the first indication parameter. Therefore, the three-level beam training mechanism will not be enabled.

[0113] Based on this, in this embodiment of the present disclosure, the network-side device may send an RRC message including the first indication information or an RRC message excluding the first indication information as needed, so as to activate the three-level training mechanism when data transmission is actually required, and send a DCI including the first indication parameter to the terminal for more refined beam training.

[0114] By implementing the embodiments of this disclosure, the terminal receives a Radio Resource Control (RRC) message from the network-side device. The RRC message includes first indication information, which indicates that the DCI includes a first indication parameter. The terminal also receives the DCI from the network-side device, which includes the first indication parameter, which indicates the Channel State Information Reference Signal (CSI-RS) resource. In this way, more refined beam training can be performed only when the network-side device actually needs to transmit data, thereby reducing the overhead of the network-side device in maintaining a more refined beam and solving the problem of high beam training overhead in higher frequency bands.

[0115] Please see Figure 8 , Figure 8 This is a flowchart of another communication method provided in the embodiments of this disclosure.

[0116] like Figure 8 As shown, this method is executed by the terminal, and the method may include, but is not limited to, the following steps:

[0117] S81: Receive a set of CSI-RS from the network-side device; wherein each CSI-RS corresponds to the resource number of a CSI-RS resource in the first indication parameter.

[0118] In this embodiment of the disclosure, the network-side device sends a set of CSI-RS to the terminal. The network-side device can use a finer beam to transmit each CSI-RS. For example, the network-side device can adjust the steering vector added to the transmitting antenna array to control the width of the transmission beam, thereby using a finer beam to transmit each CSI-RS.

[0119] In this process, the network-side device sends a set of CSI-RS, each CSI-RS corresponding to a resource number of a CSI-RS resource in the first indication parameter. The terminal receives a set of CSI-RS sent by the network-side device and feeds back the resource number of a CSI-RS resource corresponding to a beam. This allows the terminal to determine that the beam is the beam resource used by the CSI-RS corresponding to the resource number sent by the network-side device, so that the beam can be used when the network-side device sends information to the terminal in the future.

[0120] It should be noted that S81 can be implemented alone or in combination with any other step in the embodiments of this disclosure, such as in combination with S71 in the embodiments of this disclosure. The embodiments of this disclosure do not limit this.

[0121] Please see Figure 9 , Figure 9 This is a flowchart of another communication method provided in the embodiments of this disclosure.

[0122] like Figure 9As shown, this method is executed by the terminal, and the method may include, but is not limited to, the following steps:

[0123] S91: Measure CSI-RS and detect the reference signal received power RSRP to determine the resource number of the CSI-RS resource corresponding to the beam.

[0124] In this embodiment of the disclosure, the terminal receives the DCI sent by the network-side device, decodes the DCI, measures a set of CSI-RS sent by the network-side device, measures each CSI-RS, detects the reference signal received power (RSRP), and determines the information of a beam, namely the resource number of the CSI-RS resource corresponding to the beam.

[0125] It should be noted that S91 can be implemented alone or in combination with any other step in the embodiments of this disclosure, such as in combination with S71 and / or S81 in the embodiments of this disclosure. The embodiments of this disclosure do not limit this.

[0126] Please see Figure 10 , Figure 10 This is a flowchart of another communication method provided in the embodiments of this disclosure.

[0127] like Figure 10 As shown, this method is executed by the terminal, and the method may include, but is not limited to, the following steps:

[0128] S101: Receive the PDSCH from the network-side device; transmit the resource number of the CSI-RS corresponding to the beam on the HARQ resource of the PDSCH.

[0129] In this embodiment of the disclosure, the network-side device sends a Physical Downlink Shared Channel (PDSCH) to the terminal, and then sends a set of CSI-RS. The network-side device will use a finer beam to transmit each CSI-RS. Each CSI-RS corresponds to a resource number of a CSI-RS resource in the first indication parameter. When the terminal receives a set of CSI-RS sent by the network-side device, it needs to feed back information about the best beam, that is, feed back the resource number of the CSI-RS resource corresponding to the beam. In this way, it can be determined that the beam is the beam resource used by the network-side device when sending the CSI-RS corresponding to the resource number, so that the beam can be used when the network-side device sends information to the terminal in the future.

[0130] The terminal can feed back the information of the beam on the HARQ resource of the PDSCH, that is, it can use the HARQ resource of the PDSCH to feed back the resource number of the CSI-RS resource corresponding to the beam.

[0131] In this embodiment of the disclosure, after receiving feedback from the terminal, the network-side device can use the feedback results for subsequent data transmission to the terminal. Thus, the network-side device can maintain a wider beam when there is no data transmission, and perform more refined beam training when data is actually transmitted. This reduces the overhead of the network-side device maintaining a more refined beam, while improving the transmission efficiency of PDSCH and solving the problem of high beam training overhead in higher frequency bands.

[0132] It should be noted that S101 can be implemented alone or in combination with any other step in the embodiments of this disclosure, such as in combination with S71 and / or S81 and / or S91 in the embodiments of this disclosure. The embodiments of this disclosure do not limit this.

[0133] Please see Figure 11 , Figure 11 This is a flowchart of another communication method provided in the embodiments of this disclosure.

[0134] like Figure 11 As shown, this method is executed by the terminal, and the method may include, but is not limited to, the following steps:

[0135] S111: The RRC message also includes second indication information, which indicates that the DCI includes second indication parameters. The second indication parameters indicate the first uplink feedback resource of the CSI-RS resource number, and the CSI-RS resource number corresponding to the beam fed back by the terminal on the first uplink feedback resource.

[0136] The radio resource control (RRC) message sent by the network-side device to the terminal includes first indication information and second indication information. The first indication information carried by the RRC message can be newly added parameter information or a redefined version of the original parameter information in the RRC message. The second indication information carried by the RRC message can be newly added parameter information or a redefined version of the original parameter information in the RRC message. This disclosure embodiment does not impose specific limitations on this.

[0137] In this embodiment of the present disclosure, the network-side device can send an RRC message including first indication information and second indication information to the terminal. The indication DCI includes first indication parameters and second indication parameters. After receiving the RRC message including first indication information and second indication information, the terminal can understand the first indication parameters and second indication parameters, and then the terminal performs corresponding actions according to the first indication parameters and second indication parameters, thereby starting and performing the three-level beam training mechanism.

[0138] The second indication parameter can be a newly added field in the DCI, which is used to indicate the first uplink feedback resource used by the resource number of the CSI-RS corresponding to the terminal feedback beam. Thus, after receiving the DCI including the second indication parameter, the terminal can feed back the resource number of the CSI-RS corresponding to the beam on the first uplink feedback resource.

[0139] It is understandable that after receiving an RRC message including the first indication information and the second indication information, and a DCI including the first indication parameter and the second indication parameter, the terminal can, after receiving a set of CSI-RS sent by the network-side device, determine the resource number of the CSI-RS resource corresponding to a beam, and then feed back the resource number of the CSI-RS corresponding to the beam on the first uplink feedback resource indicated by the second indication parameter.

[0140] In this embodiment of the disclosure, after the network-side device sends the DCI, it can indicate a set of CSI-RS resources through the first indication parameter. The network-side device can use a finer beam to transmit each CSI-RS, and the network-side device can receive the resource number of the CSI-RS resource corresponding to the beam fed back by the terminal on the first uplink feedback resource indicated by the second indication parameter. Then, it can use the feedback result for the current data transmission for the terminal. Thus, the network-side device can maintain a wider beam when there is no data transmission, and perform finer beam training when data is actually transmitted. This can reduce the overhead of the network-side device maintaining a finer beam and solve the problem of high beam training overhead in higher frequency bands.

[0141] It should be noted that S111 can be implemented alone or in combination with any other step in the embodiments of this disclosure, such as in combination with S71 and / or S81 and / or S91 in the embodiments of this disclosure. The embodiments of this disclosure do not limit this.

[0142] Please see Figure 12 , Figure 12 This is a flowchart of another communication method provided in the embodiments of this disclosure.

[0143] like Figure 12 As shown, this method is executed by the terminal, and the method may include, but is not limited to, the following steps:

[0144] S121: Receive PDSCH from network-side equipment on the beam.

[0145] In this embodiment, the terminal receives a set of CSI-RS sent by the network-side device, measures each CSI-RS, determines a beam (i.e., determines the resource number of the CSI-RS corresponding to the beam), and feeds it back to the network-side device. Thus, when the network-side device receives the resource number of the CSI-RS corresponding to the beam fed back by the terminal, it sends a PDSCH to the terminal on that beam. The terminal can receive the PDSCH from the network-side device on that beam, enabling the network-side device to transmit the PDSCH using the beam fed back by the terminal. This achieves the goal of transmitting the PDSCH through a finer beam, reducing the overhead of the network-side device maintaining finer beam pairs for PDSCH transmission and improving the transmission efficiency of the PDSCH.

[0146] It should be noted that S121 can be implemented alone or in combination with any other step in the embodiments of this disclosure, such as in combination with S71 and / or S81 and / or S91 and / or S111 in the embodiments of this disclosure. The embodiments of this disclosure do not limit this.

[0147] In some embodiments, if the network-side device does not receive the resource number of the CSI-RS corresponding to the beam fed back by the terminal, it sends a PDSCH to the terminal on the first beam, and the terminal receives the PDSCH from the network-side device on the first beam, which is different from the beam fed back by the terminal.

[0148] In this embodiment of the disclosure, if the network-side device does not receive the resource number of the CSI-RS corresponding to the beam fed back by the terminal, the traditional beam indication method is continued to be used to indicate the first beam to the terminal in response to the failure of the transmission of the resource number of the CSI-RS corresponding to the feedback beam. PDSCH is sent to the terminal on the indicated first beam where the transmission failed.

[0149] In some embodiments, the DCI includes an indication field for indicating the first beam transmitting the PDSCH.

[0150] In this embodiment of the disclosure, the DCI includes an indication field for indicating the first beam for transmitting PDSCH, so that the network-side device can transmit PDSCH to the terminal on the first beam.

[0151] In some embodiments, CSI-RS resources use Time Division Multiplexing (TDM) or Frequency Division Multiplexing (FDM).

[0152] In this embodiment of the disclosure, CSI-RS resources can use continuous time division multiplexing (TDM) or discontinuous TDM, or CSI-RS resources can use frequency division multiplexing (FDM).

[0153] In the embodiments provided above, the methods provided by the present disclosure are described from the perspectives of network-side devices and terminals, respectively. To implement the functions of the methods provided in the embodiments of the present disclosure, the network-side devices and terminals may include hardware structures and software modules, implementing the above functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. One of the above functions can be executed in the form of hardware structures, software modules, or a combination of hardware structures and software modules.

[0154] Please see Figure 13 This is a schematic diagram of the structure of a communication device 1 provided in an embodiment of the present disclosure. Figure 13 The communication device 1 shown may include a transceiver module 111. The transceiver module 11 may include a sending module and / or a receiving module. The sending module is used to implement the sending function, and the receiving module is used to implement the receiving function. The transceiver module 11 can implement both sending and / or receiving functions.

[0155] Communication device 1 can be a terminal, a device within a terminal, or a device compatible with a terminal. Alternatively, communication device 1 can be a network-side device, a device within a network-side device, or a device compatible with a network-side device.

[0156] Communication device 1 is a network-side device:

[0157] The device includes: a transceiver module for sending configuration information to a terminal; wherein the configuration information is used to indicate that the downlink control information (DCI) includes a first indication parameter, and the first indication parameter is used to indicate a set of channel information reference signals (CSI-RS) resources.

[0158] Communication device 1 is a terminal:

[0159] The device includes: a transceiver module for receiving configuration information from network-side equipment; wherein the configuration information is used to indicate that the downlink control information (DCI) includes a first indication parameter, and the first indication parameter is used to indicate a set of channel information reference signals (CSI-RS) resources.

[0160] Regarding the communication device 1 in the above embodiments, the specific methods by which each module performs its operations have been described in detail in the embodiments related to the method, and will not be elaborated upon here. The communication device 1 provided in the above embodiments of this disclosure achieves the same or similar beneficial effects as the communication methods provided in some of the above embodiments, and will not be repeated here.

[0161] Please see Figure 14 , Figure 14 This is a schematic diagram of another communication device 1000 provided in this embodiment. The communication device 1000 can be a network-side device, a terminal, a chip, chip system, or processor that supports the network-side device in implementing the above methods, or a chip, chip system, or processor that supports the terminal in implementing the above methods. This communication device 1000 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0162] The communication device 1000 can be a network-side device, a terminal, a chip, chip system, or processor that supports the network-side device in implementing the above methods, or a chip, chip system, or processor that supports the terminal in implementing the above methods. This device can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0163] The communication device 1000 may include one or more processors 1001. The processor 1001 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control the communication device (e.g., base station, baseband chip, terminal equipment, terminal equipment chip, DU or CU, etc.), execute computer programs, and process data from the computer programs.

[0164] Optionally, the communication device 1000 may further include one or more memories 1002, which may store a computer program 1004. The memories 1002 execute the computer program 1004 to cause the communication device 1000 to perform the methods described in the above method embodiments. Optionally, the memories 1002 may also store data. The communication device 1000 and the memories 1002 may be provided separately or integrated together.

[0165] Optionally, the communication device 1000 may further include a transceiver 1005 and an antenna 1006. The transceiver 1005 may be referred to as a transceiver unit, transceiver, or transceiver circuit, etc., and is used to implement the transmission and reception functions. The transceiver 1005 may include a receiver and a transmitter. The receiver may be referred to as a receiver or receiving circuit, etc., and is used to implement the receiving function; the transmitter may be referred to as a transmitter or transmitting circuit, etc., and is used to implement the transmitting function.

[0166] Optionally, the communication device 1000 may further include one or more interface circuits 1007. The interface circuit 1007 is used to receive code instructions and transmit them to the processor 1001. The processor 1001 executes the code instructions to cause the communication device 1000 to perform the method described in the above method embodiments.

[0167] Communication device 1000 is a network-side device: transceiver 1005 is used to perform... Figure 2 S21 in; Figure 3 S31 in; Figure 4 S41 in; Figure 5 S51 in; Figure 6 S61 in the middle.

[0168] Communication device 1000 is a terminal; transceiver 1005 is used for execution. Figure 7 S71 in the middle; Figure 8 S81 in; Figure 9 S91 in the middle; Figure 10 S101 in; Figure 11 S111 in; Figure 12 S121 in the middle.

[0169] In one implementation, the processor 1001 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing receiving and transmitting functions may be separate or integrated. The aforementioned transceiver circuit, interface, or interface circuit can be used for reading and writing code / data, or it can be used for transmitting or relaying signals.

[0170] In one implementation, processor 1001 may store computer program 1003, which runs on processor 1001 and causes communication device 1000 to execute the methods described in the above method embodiments. Computer program 1003 may be embedded in processor 1001, in which case processor 1001 may be implemented in hardware.

[0171] In one implementation, the communication device 1000 may include circuitry capable of performing the functions of transmitting, receiving, or communicating as described in the foregoing method embodiments. The processor and transceiver described in this disclosure can be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), electronic devices, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductors (CMOS), n-metal-oxide-semiconductor (NMOS), positive-channel metal oxide semiconductors (PMOS), bipolar junction transistors (BJTs), bipolar CMOS (BiCMOS), silicon-germanium (SiGe), gallium arsenide (GaAs), etc.

[0172] The communication device described in the above embodiments may be a terminal, but the scope of the communication device described in this disclosure is not limited thereto, and the structure of the communication device may vary. Figure 14 The communication device may be a standalone device or part of a larger device. For example, the communication device may be:

[0173] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0174] (2) A collection of one or more ICs, optionally including storage components for storing data and computer programs;

[0175] (3) ASIC, such as modem;

[0176] (4) Modules that can be embedded in other devices;

[0177] (5) Receivers, terminal equipment, smart terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.

[0178] (6) Others, etc.

[0179] For cases where the communication device can be a chip or a chip system, please refer to [link / reference]. Figure 15 This is a structural diagram of a chip provided in an embodiment of this disclosure.

[0180] Chip 1100 includes processor 1101 and interface 1103. The number of processors 1101 can be one or more, and the number of interfaces 1103 can be multiple.

[0181] Regarding the use of the chip to implement the functions of the terminal in the embodiments of this disclosure:

[0182] Interface 1103 is used to receive code instructions and transmit them to the processor.

[0183] Processor 1101 is used to run code instructions to perform the communication methods as described in some of the embodiments above.

[0184] For cases where the chip is used to implement the functions of the network-side device in the embodiments of this disclosure:

[0185] Interface 1103 is used to receive code instructions and transmit them to the processor.

[0186] Processor 1101 is used to run code instructions to perform the communication methods as described in some of the embodiments above.

[0187] Optionally, chip 1100 may also include memory 1102, which is used to store necessary computer programs and data.

[0188] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this disclosure can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented in hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the described functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this disclosure.

[0189] This disclosure also provides a communication system, which includes the aforementioned... Figure 13 The embodiments include a communication device as a terminal and a communication device as a network-side device; alternatively, the system may include the aforementioned... Figure 14 The embodiments include a communication device as a terminal and a communication device as a network-side device.

[0190] This disclosure also provides a readable storage medium having instructions stored thereon that, when executed by a computer, implement the functions of any of the above method embodiments.

[0191] This disclosure also provides a computer program product that, when executed by a computer, implements the functions of any of the above method embodiments.

[0192] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program can be transferred from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0193] Those skilled in the art will understand that the various numerical designations such as "first," "second," etc., used in this disclosure are merely for the convenience of description and are not intended to limit the scope of the embodiments of this disclosure, nor do they indicate the order of events.

[0194] At least one of the features described in this disclosure can also be described as one or more, and multiple features can be two, three, four or more, and this disclosure does not impose any limitations. In the embodiments of this disclosure, for a technical feature, the technical features in that technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no sequential order or size order among the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0195] The correspondences shown in the tables of this disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values; this disclosure is not limiting. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, the correspondences shown in some rows of the tables in this disclosure may not be configured. Furthermore, appropriate modifications and adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the headers of the above tables can also use other names that the communication device can understand, and the values ​​or representations of the parameters can also be other values ​​or representations that the communication device can understand. In the implementation of the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables, etc.

[0196] The predefined terms in this disclosure can be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0197] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0198] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0199] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, The method is executed by a network-side device, and the method includes: A Radio Resource Control (RRC) message is sent to the terminal. The RRC message includes first indication information, which indicates that the Downlink Control Information (DCI) includes a first indication parameter. The RRC message also includes second indication information, which indicates that the DCI includes a second indication parameter. Send a DCI to the terminal. The DCI includes the first indication parameter, which is used to indicate a set of Channel State Information Reference Signals (CSI-RS) resources. The second indication parameter is used to indicate a first uplink feedback resource with a resource number of the CSI-RS. The first uplink feedback resource is used to receive the resource number of the CSI-RS corresponding to the beam fed back by the terminal. The method further includes: sending a set of CSI-RS to the terminal; wherein each CSI-RS corresponds to the resource number of a CSI-RS resource in the first indication parameter.

2. The method according to claim 1, characterized in that, The method further includes: Send the Physical Downlink Shared Channel (PDSCH) to the terminal; The resource number of the CSI-RS corresponding to the beam fed back by the terminal is received on the Hybrid Automatic Repeat Request (HARQ) resource of the PDSCH.

3. The method according to claim 2, characterized in that, The method further includes: The PDSCH is transmitted to the terminal on the beam fed back by the terminal, wherein the resource number of the CSI-RS is received.

4. The method according to claim 3, characterized in that, The method further includes: The PDSCH is transmitted to the terminal on the first beam, wherein the resource number of the CSI-RS is not received, and the first beam is different from the beam fed back by the terminal.

5. The method according to claim 2, characterized in that, The method further includes: The PDSCH is transmitted to the terminal on the first beam.

6. The method according to any one of claims 1 to 5, characterized in that, The CSI-RS resources use Time Division Multiplexing (TDM) or Frequency Division Multiplexing (FDM).

7. A communication method, characterized in that, The method is executed by a terminal, and the method includes: Receive a Radio Resource Control (RRC) message from a network-side device. The RRC message includes first indication information, which indicates that the DCI includes a first indication parameter. The RRC message also includes second indication information, which indicates that the DCI includes a second indication parameter. The terminal receives the DCI from the network-side device. The DCI includes the first indication parameter, which is used to indicate the Channel State Information Reference Signal (CSI-RS) resource. The second indication parameter is used to indicate the first uplink feedback resource with the resource number of the CSI-RS. The terminal feeds back the resource number of the CSI-RS corresponding to the beam on the first uplink feedback resource. The method further includes: receiving a set of CSI-RS from the network-side device; wherein each CSI-RS corresponds to the resource number of a CSI-RS resource in the first indication parameter.

8. The method according to claim 7, characterized in that, The method further includes: The CSI-RS is measured, and the reference signal received power RSRP is detected to determine the resource number of the CSI-RS resource corresponding to the beam.

9. The method according to claim 8, characterized in that, The method further includes: Receive PDSCH from network-side equipment; The resource number of the CSI-RS corresponding to the beam is transmitted on the HARQ resource of the PDSCH.

10. The method according to claim 9, characterized in that, The method further includes: The PDSCH of the network-side device is received on the beam.

11. The method according to any one of claims 7 to 10, characterized in that, The CSI-RS resources use Time Division Multiplexing (TDM) or Frequency Division Multiplexing (FDM).

12. A network-side device, characterized in that, The network-side device includes: The transceiver module is used to send a Radio Resource Control (RRC) message to the terminal. The RRC message includes first indication information, which indicates that the Downlink Control Information (DCI) includes a first indication parameter. The RRC message also includes second indication information, which indicates that the DCI includes a second indication parameter. The transceiver module is further configured to send a DCI to the terminal. The DCI includes the first indication parameter, which is used to indicate a set of Channel State Information Reference Signals (CSI-RS) resources. The second indication parameter is used to indicate a first uplink feedback resource with a resource number of the CSI-RS. The first uplink feedback resource is used to receive the resource number of the CSI-RS corresponding to the beam fed back by the terminal. The transceiver module is further configured to send a set of CSI-RS to the terminal; wherein each CSI-RS corresponds to the resource number of a CSI-RS resource in the first indication parameter.

13. A terminal, characterized in that, The terminal includes: The transceiver module is used to receive Radio Resource Control (RRC) messages from network-side devices. The RRC messages include first indication information, which indicates that the DCI includes a first indication parameter. The RRC messages also include second indication information, which indicates that the DCI includes a second indication parameter. The transceiver module is further configured to receive the DCI from the network-side device. The DCI includes the first indication parameter, which is used to indicate the Channel State Information Reference Signal (CSI-RS) resource. The second indication parameter is used to indicate the first uplink feedback resource with the resource number of the CSI-RS. The terminal feeds back the resource number of the CSI-RS corresponding to the beam on the first uplink feedback resource. The transceiver module is also used to receive a set of CSI-RS from the network-side device; wherein each CSI-RS corresponds to the resource number of a CSI-RS resource in the first indication parameter.

14. A communication system, characterized in that, The device includes a network-side device and a terminal, wherein the network-side device is configured to implement the method of any one of claims 1 to 6, and the terminal is configured to implement the method of any one of claims 7 to 11.

15. A communication device, characterized in that, The device includes a processor and a memory, the memory storing a computer program, the processor executing the computer program stored in the memory to cause the device to perform the method as described in any one of claims 1 to 6.

16. A communication device, characterized in that, The device includes a processor and a memory, the memory storing a computer program, the processor executing the computer program stored in the memory to cause the device to perform the method as described in any one of claims 7 to 11.

17. A communication device, characterized in that, include: Processor and interface circuitry; The interface circuit is used to receive code instructions and transmit them to the processor; The processor is configured to run the code instructions to perform the method as described in any one of claims 1 to 6.

18. A communication device, characterized in that, include: Processor and interface circuitry; The interface circuit is used to receive code instructions and transmit them to the processor; The processor is configured to run the code instructions to perform the method as described in any one of claims 7 to 11.

19. A computer-readable storage medium for storing instructions that, when executed, cause the method of any one of claims 1 to 6 to be implemented.

20. A computer-readable storage medium for storing instructions that, when executed, cause the method of any one of claims 7 to 11 to be implemented.

21. A program product comprising at least one of a program and instructions, characterized in that, When at least one of the programs or instructions is executed by the communication device, it implements the steps of the method according to any one of claims 1 to 6, 7 to 11.

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