Beam measurement method, network equipment, terminal and storage medium

Abstract

The present disclosure relates to the technical field of communications, and in particular, to a beam measurement method, a network device, a terminal and a storage medium, the beam measurement method comprising: sending a reference signal to the terminal, the reference signal being used for beam measurement; receiving first information sent by the terminal, wherein the first information is used for indicating index information corresponding to the resource with the strongest received energy of the reference signal; and determining the direction or angle of the terminal based on the index information. Accordingly, the time of beam measurement can be reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and more particularly, to a beam measurement method, a network device, a terminal, and a storage medium. Background Art

[0002] In order to meet the increasingly high requirements for communication capabilities, higher frequency bands need to be used, such as terahertz (THz) and sub-THz, and massive multiple-input multiple-output (MIMO) beamforming is adopted. The beams become extremely narrow, resulting in a large candidate beam set and a long time required to complete a round of beam measurements. Summary of the Invention

[0003] Embodiments of the present disclosure propose a beam measurement method, a network device, a terminal, and a storage medium to solve the technical problem of the long time required to complete a round of beam measurements in the related art.

[0004] According to a first aspect of an embodiment of the present disclosure, a beam measurement method is provided, which is executed by a network device. The method includes: sending a reference signal to a terminal, where the reference signal is used for beam measurement; receiving first information sent by the terminal, where the first information is used to indicate index information corresponding to a resource with the strongest received energy of the reference signal; and determining the direction or angle of the terminal based on the index information.

[0005] According to a second aspect of an embodiment of the present disclosure, a beam measurement method is provided, which is executed by a terminal. The method includes: receiving a reference signal from a network device, where the reference signal is used for beam measurement; determining a resource with the strongest received energy of the reference signal; and sending first information to the network device, where the first information is used to indicate index information corresponding to the resource with the strongest received energy of the reference signal.

[0006] According to a third aspect of an embodiment of the present disclosure, a beam measurement device is provided. The device includes: a transceiver module, configured to send a reference signal for beam measurement to a terminal and receive first information sent by the terminal, where the first information is used to indicate index information corresponding to a resource with the strongest received energy of the reference signal; and a processing module, configured to determine the direction or angle of the terminal based on the index information.

[0007] According to a fourth aspect of the embodiments of the present disclosure, a beam measurement device is provided. The device includes: a transceiver module, configured to receive a reference signal from a network device, where the reference signal is used for beam measurement; a processing module, configured to determine a resource with the strongest received energy of the reference signal; and the transceiver module, configured to send first information to the network device, where the first information is used to indicate index information corresponding to the resource with the strongest received energy of the reference signal.

[0008] According to a fifth aspect of the embodiments of the present disclosure, a network device is provided, including: one or more processors; a memory coupled to the processors, where executable instructions are stored on the memory, and when the executable instructions are executed by the processors, the terminal is caused to execute the beam measurement method described in the first aspect above.

[0009] According to a sixth aspect of the embodiments of the present disclosure, a terminal is provided, including: one or more processors; a memory coupled to the processors, where executable instructions are stored on the memory, and when the executable instructions are executed by the processors, the network device is caused to execute the beam measurement method described in the second aspect above.

[0010] According to a seventh aspect of the embodiments of the present disclosure, a communication system is provided, including a terminal and a network device. The terminal is configured to implement the beam measurement method described in the second aspect, and the network device is configured to implement the beam measurement method described in the first aspect.

[0011] According to an eighth aspect of the embodiments of the present disclosure, a storage medium is provided. The storage medium stores instructions, and when the instructions run on a communication device, the communication device is caused to execute the beam measurement method described in the first aspect or the second aspect above.

[0012] According to the embodiments of the present disclosure, the present application utilizes the beam squint phenomenon in a high-frequency system. In the beam measurement phase, the network device only needs to send a reference signal to the terminal once and receive the index information indicating the resource with the strongest received energy of the reference signal feedback by the terminal, and then can determine whether the terminal moves based on the index information and determine the current direction or angle of the terminal to quickly complete beam measurement. It can be seen that the technical solution implemented by the present application does not need to perform beam measurement on each beam in the beam candidate set in turn, greatly reducing the beam measurement time, and does not need to add a delay circuit network for precoding, reducing the hardware cost. Description of the Drawings

[0013] To more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts. Figure 1 It is a schematic diagram of the architecture of a communication system shown according to an embodiment of the present disclosure. Figure 2 It is an interaction schematic diagram of a beam measurement method shown according to an embodiment of the present disclosure. Figure 3A It is a schematic flowchart of a beam measurement method shown according to an embodiment of the present disclosure. Figure 3B It is a schematic diagram of beam squint shown according to an embodiment of the present disclosure; Figure 3C It is a schematic diagram of a resource unit shown according to an embodiment of the present disclosure; Figure 3D It is a schematic diagram of a resource unit group shown according to an embodiment of the present disclosure; Figure 3E It is a schematic flowchart of a beam measurement method shown according to an embodiment of the present disclosure. Figure 4 It is a schematic flowchart of a beam measurement method shown according to an embodiment of the present disclosure. Figure 5 It is a schematic block diagram of the device structure of a terminal shown according to an embodiment of the present disclosure. Figure 6 It is a schematic block diagram of the device structure of a network device shown according to an embodiment of the present disclosure. Figure 7 It is a schematic diagram of the structure of a communication device proposed in an embodiment of the present disclosure. Figure 8 It is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure. Specific embodiments

[0014] Embodiments of the present disclosure propose a beam measurement method, a network device, a terminal, and a storage medium.

[0015] In a first aspect, an embodiment of the present disclosure proposes a beam measurement method, which is executed by a network device. The method includes: sending a reference signal to a terminal, where the reference signal is used for beam measurement; receiving first information sent by the terminal, where the first information is used to indicate index information corresponding to a resource with the strongest received energy of the reference signal; and determining the direction or angle of the terminal based on the index information.

[0016] In the above embodiments, the beam squint phenomenon in the high-frequency system is utilized. In the beam measurement phase, the network device only needs to send a reference signal to the terminal once and receive the index information indicating the resource with the strongest received energy of the reference signal feedback by the terminal, and then can determine the current direction or angle of the terminal based on the index information to quickly complete the beam measurement. It can be seen that the technical solution implemented in this application does not need to perform beam measurement on each beam in the beam candidate set in turn, greatly reducing the beam measurement time, and does not need to add a delay circuit network for precoding, reducing the hardware cost.

[0017] Combined with some embodiments of the first aspect. In some embodiments, the index information includes at least one of the following: subcarrier index SI, which is used to indicate the subcarrier corresponding to the resource unit with the strongest received energy in the resource units where the terminal receives the reference signal; subcarrier group index SGI, which is used to indicate the subcarrier group corresponding to the resource unit group with the strongest average received energy in the resource unit groups where the terminal receives the reference signal.

[0018] Combined with some embodiments of the first aspect. In some embodiments, the subcarrier index SI is used to indicate the subcarrier corresponding to the resource unit with the strongest received energy in the resource unit set; wherein, the resource unit set is a subset of all resource units where the terminal receives the reference signal.

[0019] Combined with some embodiments of the first aspect. In some embodiments, the subcarrier group index SGI is used to indicate the subcarrier group corresponding to the resource unit group with the strongest average received energy in the resource unit groups divided based on the resource unit set; wherein, the resource unit set is a subset of all resource units where the terminal receives the reference signal.

[0020] Combined with some embodiments of the first aspect. In some embodiments, determining the direction or angle of the terminal based on the index information includes: determining a first subcarrier based on the index information; and determining the direction or angle of the terminal based on the first subcarrier corresponding to a first carrier frequency.

[0021] Combined with some embodiments of the first aspect. In some embodiments, determining the direction or angle of the terminal based on the first subcarrier corresponding to a first carrier frequency includes: determining the direction or angle of the terminal based on the first subcarrier corresponding to a first carrier frequency and the central carrier frequency corresponding to the reference signal.

[0022] Combined with some embodiments of the first aspect. In some embodiments, determining the direction of the terminal based on the first subcarrier corresponding to a first carrier frequency and the central carrier frequency corresponding to the reference signal includes: determining the direction or angle of the terminal based on the ratio of the central carrier frequency to the first carrier frequency.

[0023] In combination with some embodiments of the first aspect. In some embodiments, determining the direction or angle of the terminal based on the first subcarrier corresponding to the first carrier frequency includes: determining the direction or angle of the terminal through the following formula:

[0024] where θ represents the direction or angle of analog beamforming when sending a reference signal to the terminal, θ m the direction or angle of the terminal, f c represents the central carrier frequency corresponding to the reference signal, f m represents the carrier frequency corresponding to the m-th subcarrier, and the m-th subcarrier is the first subcarrier.

[0025] In combination with some embodiments of the first aspect. In some embodiments, after determining the direction or angle of the terminal based on the index information, the method further includes: determining compensation precoding information; using the compensation precoding information to adjust the direction or angle of the analog beamforming to the direction or angle of the terminal, and eliminating the array gain loss caused by beam squint.

[0026] In combination with some embodiments of the first aspect. In some embodiments, before sending the reference signal to the terminal, the method further includes: sending second information to the terminal, and the second information is used to instruct the terminal to send the first information.

[0027] In combination with some embodiments of the first aspect. In some embodiments, the method further includes: sending the configuration of the reference signal to the terminal.

[0028] In combination with some embodiments of the first aspect. In some embodiments, the method further includes: sending the configuration of the beam measurement to the terminal.

[0029] In combination with some embodiments of the first aspect. In some embodiments, the method further includes: sending the configuration of the index information to the terminal.

[0030] In combination with some embodiments of the first aspect. In some embodiments, the configuration of the index information includes SI configuration and / or SGI configuration.

[0031] In combination with some embodiments of the first aspect. In some embodiments, the SI configuration includes at least one of the following: a resource element set, and the resource element set is a subset of all resource elements for the terminal to receive the reference signal; the correspondence between each resource element and an index number.

[0032] Some embodiments in connection with the first aspect. In some embodiments, the SGI configuration includes at least one of the following: a resource unit group; a correspondence between each resource unit group and an index number.

[0033] In a second aspect, embodiments of the present disclosure propose a beam measurement method, which is executed by a terminal. The method includes: receiving a reference signal from a network device, where the reference signal is used for beam measurement; determining a resource with the strongest received energy of the reference signal; and sending first information to the network device, where the first information is used to indicate index information corresponding to the resource with the strongest received energy of the reference signal.

[0034] Some embodiments in connection with the second aspect. In some embodiments, the index information includes at least one of the following: a subcarrier index SI, where the subcarrier index is used to indicate a subcarrier corresponding to a resource unit with the strongest received energy among the resource units where the terminal receives the reference signal; a subcarrier group index SGI, where the subcarrier group index is used to indicate a subcarrier group corresponding to a resource unit group with the strongest average received energy among the resource unit groups where the terminal receives the reference signal.

[0035] Some embodiments in connection with the second aspect. In some embodiments, the subcarrier index SI is used to indicate a subcarrier corresponding to a resource unit with the strongest received energy in a resource unit set; where the resource unit set is a subset of all resource units where the terminal receives the reference signal.

[0036] Some embodiments in connection with the second aspect. In some embodiments, the subcarrier group index SGI is used to indicate a subcarrier group corresponding to a resource unit group with the strongest average received energy among resource unit groups divided based on a resource unit set; where the resource unit set is a subset of all resource units where the terminal receives the reference signal.

[0037] Some embodiments in connection with the second aspect. In some embodiments, before sending the reference signal to the terminal, the method further includes: receiving second information from the network device, where the second information is used to indicate that the terminal sends the first information.

[0038] Some embodiments in connection with the second aspect. In some embodiments, the method further includes: receiving a configuration of the reference signal from the network device.

[0039] Some embodiments in connection with the second aspect. In some embodiments, the method further includes: receiving a configuration of the beam measurement from the network device.

[0040] Some embodiments in connection with the second aspect. In some embodiments, the method further includes: receiving a configuration of the index information from the network device.

[0041] In a third aspect, a beam measurement device is proposed. The device includes: a transceiver module, configured to send a reference signal to a terminal, where the reference signal is used for beam measurement; and receive first information sent by the terminal, where the first information is used to indicate index information corresponding to a resource with the strongest received energy of the reference signal; and a processing module, configured to determine the direction or angle of the terminal based on the index information.

[0042] In a fourth aspect, a beam measurement device is proposed. The device includes: a transceiver module, configured to receive a reference signal from a network device, where the reference signal is used for beam measurement; a processing module, configured to determine a resource with the strongest received energy of the reference signal; and the transceiver module, configured to send first information to the network device, where the first information is used to indicate index information corresponding to the resource with the strongest received energy of the reference signal.

[0043] In a fifth aspect, a network device is proposed, including: one or more processors; a memory coupled to the processors, where executable instructions are stored on the memory, and when the executable instructions are executed by the processors, the terminal is caused to execute the beam measurement method described in the first aspect and the optional embodiments of the first aspect.

[0044] In a sixth aspect, a terminal is proposed, including: one or more processors; a memory coupled to the processors, where executable instructions are stored on the memory, and when the executable instructions are executed by the processors, the network device is caused to execute the beam measurement method described in the second aspect and the optional embodiments of the second aspect.

[0045] In a seventh aspect, embodiments of the present disclosure propose a communication device. The communication device includes: one or more processors; a memory coupled to the processors, where executable instructions are stored on the memory, and when the executable instructions are executed by the processors, the processors are caused to call the executable instructions so that the communication device executes the beam measurement method described in the first aspect and the second aspect, and the optional embodiments of the first aspect and the second aspect.

[0046] In an eighth aspect, embodiments of the present disclosure propose a communication system. The communication system includes: a terminal and a network device; where the terminal is configured to execute the method described in the second aspect and the optional embodiments of the second aspect, and the network device is configured to execute the method described in the first aspect and the optional embodiments of the first aspect.

[0047] In a ninth aspect, embodiments of the present disclosure propose a storage medium. The storage medium stores instructions, and when the instructions run on a communication device, the communication device is caused to execute the method described in the first aspect and the second aspect, and the optional embodiments of the first aspect and the second aspect.

[0048] In a tenth aspect, an embodiment of the present disclosure provides a program product. When the program product is executed by a communication device, the communication device is caused to execute the methods described in the first aspect and the second aspect, and the optional embodiments of the first aspect and the second aspect.

[0049] In an eleventh aspect, an embodiment of the present disclosure provides a computer program. When it runs on a computer, the computer is caused to execute the methods described in the first aspect and the second aspect, and the optional embodiments of the first aspect and the second aspect.

[0050] It can be understood that the above-mentioned network device, terminal, communication device, communication system, storage medium, program product, and computer program are all used to execute the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods, which will not be elaborated here.

[0051] Embodiments of the present disclosure provide a beam measurement method, a network device, a terminal, and a storage medium. In some embodiments, terms such as an information sending method, an information receiving method, an information processing method, and a communication method can be replaced with each other, terms such as a network device and a terminal can be replaced with an information processing device and a communication device, and terms such as an information processing system and a communication system can be replaced with each other.

[0052] The embodiments of the present disclosure are not exhaustive, but only schematic of some embodiments, and do not constitute a specific limitation on the protection scope of the present disclosure. Without contradiction, each step in an embodiment can be implemented as an independent embodiment, and the steps can be combined arbitrarily. For example, a solution obtained by removing some steps in an embodiment can also be implemented as an independent embodiment, and the order of the steps in an embodiment can be exchanged arbitrarily. In addition, the optional embodiments in an embodiment can be combined arbitrarily; furthermore, the embodiments can be combined arbitrarily. For example, some or all of the steps of different embodiments can be combined arbitrarily, and an embodiment can be combined arbitrarily with the optional embodiments of other embodiments.

[0053] In each embodiment of the present disclosure, if there is no special description and logical conflict, the terms and / or descriptions between the embodiments are consistent and can be cited from each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0054] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments, and do not constitute a limitation on the present disclosure.

[0055] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular form, such as "a", "an", "the", "above", "the above", "the foregoing", "this", etc., may mean "one and only one", or may also mean "one or more", "at least one", etc.

[0056] For example, in the case of using articles such as "a", "an", "the" in English translation, the noun after the article can be understood as a singular expression form or a plural expression form.

[0057] In the embodiments of the present disclosure, "a plurality of" means two or more.

[0058] In some embodiments, terms such as "at least one of (at least one item, at least one)", "one or more", "a plurality of", "multiple", etc. can be replaced with each other.

[0059] In some embodiments, notations such as "at least one of A and B", "A and / or B", "in one case A, in another case B", "in response to one case A, in response to another case B", etc. may, depending on the situation, include the following technical solutions: In some embodiments, A (performing A independently of B); in some embodiments, B (performing B independently of A); in some embodiments, selecting to perform from A and B (A and B are selectively performed); in some embodiments, A and B (both A and B are performed). The same is true when there are more branches such as A, B, C, etc.

[0060] In some embodiments, notations such as "A or B" may, depending on the situation, include the following technical solutions: In some embodiments, A (performing A independently of B); in some embodiments, B (performing B independently of A); in some embodiments, selecting to perform from A and B (A and B are selectively performed). The same is true when there are more branches such as A, B, C, etc.

[0061] The prefix words such as "first", "second", etc. in the embodiments of the present disclosure are only used to distinguish different described objects, and do not constitute a limitation on the position, order, priority, quantity, content, etc. of the described objects. For the description of the described objects, refer to the description in the claims or the context of the embodiments, and no redundant limitation should be formed due to the use of the prefix words.

[0062] For example, if the described object is "field", the ordinal numbers before "field" in "first field" and "second field" do not limit the position or order between the "fields", and "first" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of "first field" and "second field". For another example, if the described object is "level", the ordinal numbers before "level" in "first level" and "second level" do not limit the priority between the "levels". For another example, the number of described objects is not limited by ordinal numbers and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefix words can be the same or different. For example, if the described object is "device", "first device" and "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the described object is "information", "first information" and "second information" can be the same information or different information, and their contents can be the same or different.

[0063] In some embodiments, "including A", "containing A", "for indicating A", "carrying A" can be interpreted as directly carrying A or indirectly indicating A.

[0064] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "when...", "while...", "if...", "if... then..." can be replaced with each other.

[0065] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not fewer than", "higher than", "higher than or equal to", "not lower than", "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "fewer than", "fewer than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", "below" can be replaced with each other.

[0066] In some embodiments, a device, etc. can be interpreted as physical or virtual, and its name is not limited to the names described in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject" can be replaced with each other.

[0067] In some embodiments, "network" can be interpreted as the devices included in the network (for example, access network devices, core network devices, etc.).

[0068] In some embodiments, "network" can be interpreted as the devices included in the network (e.g., access network devices, core network devices, etc.).

[0069] In some embodiments, terms such as "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)" can be used interchangeably.

[0070] In some embodiments, terms such as "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. may be used interchangeably.

[0071] In some embodiments, an access network device, a core network device, or a network device may be replaced by a terminal. For example, for a structure in which communication between an access network device, a core network device, or a network device and a terminal is replaced by communication between multiple terminals (e.g., device-to-device (D2D), vehicle-to-everything (V2X), etc.), the embodiments of the present disclosure may also be applied. In this case, it may also be configured that the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" may also be replaced by terms corresponding to communication between terminals (e.g., "side"). For example, an uplink channel, a downlink channel, etc. may be replaced by a side channel, and an uplink, a downlink, etc. may be replaced by a side link.

[0072] In some embodiments, a terminal may be replaced by an access network device, a core network device, or a network device. In this case, it may also be configured that the access network device, the core network device, or the network device has all or part of the functions of the terminal.

[0073] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where it is located.

[0074] In some embodiments, data, information, etc. may be obtained after obtaining the consent of the user.

[0075] In addition, each element, each row, or each column in the table of the embodiments of the present disclosure can be implemented as an independent embodiment, and any combination of any element, any row, and any column can also be implemented as an independent embodiment.

[0076] Figure 1 It is a schematic diagram of the architecture of the communication system shown according to the embodiments of the present disclosure.

[0077] As Figure 1 shown, the communication system 100 includes a terminal 101 and a network device 102, where the network device includes at least one of the following: an access network device, a core network device.

[0078] In some embodiments, the terminal 101 includes, for example, at least one of a mobile phone, a wearable device, an Internet of Things device, an automobile with communication function, a smart automobile, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and a wireless terminal device in a smart home, but is not limited thereto.

[0079] In some embodiments, an access network device is, for example, a node or device that connects a terminal to a wireless network. The access network device may include at least one of an evolved NodeB (eNB), a next-generation evolved NodeB (ng-eNB), a next-generation NodeB (gNB), a NodeB (NB), a home NodeB (HNB), a home evolved NodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an Open RAN, a Cloud RAN, a base station in other communication systems, and an access node in a Wi-Fi system, but is not limited thereto.

[0080] In some embodiments, a core network device may be a single device including one or more network elements, or may be multiple devices or a group of devices, each including all or part of the above-mentioned one or more network elements. The network elements may be virtual or physical. The core network includes, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0081] In some embodiments, the technical solution of the present disclosure is applicable to the Open RAN architecture. At this time, the interfaces between or within the access network devices involved in the embodiments of the present disclosure may become the internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0082] In some embodiments, an access network device may be composed of a central unit (CU) and a distributed unit (DU). Among them, the CU may also be referred to as a control unit. Adopting the CU-DU structure can split the protocol layer of the access network device. The functions of some protocol layers are centrally controlled by the CU, and the functions of the remaining part or all protocol layers are distributed in the DU, and the DU is centrally controlled by the CU, but is not limited thereto.

[0083] It should be understood that the communication system described in the embodiments of the present disclosure is for more clearly explaining the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions proposed in the embodiments of the present disclosure. Those of ordinary skill in the art will know that with the evolution of the system architecture and the emergence of new service scenarios, the technical solutions proposed in the embodiments of the present disclosure are equally applicable to similar technical problems.

[0084] The following embodiments of the present disclosure can be applied to Figure 1 the communication system 100 shown in the figure, or some of the main bodies, but not limited thereto. Figure 1 The main bodies shown in the figure are illustrative. The communication system may include Figure 1 all or some of the main bodies in the figure, and may also include Figure 1 other main bodies outside the figure. The number and form of each main body are arbitrary. Each main body can be physical or virtual. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected, and their connection can be in any way, either directly connected or indirectly connected, either wired or wirelessly connected.

[0085] Embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, the 4th generation mobile communication system (4G), the 5th generation mobile communication system (5G), 5G New Radio (NR), Future Radio Access (FRA), New Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Vehicle-to-Everything (V2X), systems using other communication methods, next-generation systems extended based on them, etc. In addition, multiple systems can also be combined (for example, a combination of LTE or LTE-A and 5G, etc.) and applied.

[0086] Figure 2 It is an interaction schematic diagram of a beam measurement method shown according to an embodiment of the present disclosure.

[0087] As Figure 2 shown, the beam measurement method includes:

[0088] Step S201, the network device 102 sends a reference signal to the terminal 101.

[0089] In some embodiments, the network device 102 sends a reference signal to the terminal 101, and the reference signal is used for beam measurement.

[0090] In some embodiments, the terminal 101 receives a reference signal from the network device 102, and the reference signal is used for beam measurement.

[0091] In some embodiments, before sending the reference signal to the terminal 101, the network device 102 may send second information to the terminal 101, and the second information is used to instruct the terminal to send the first information.

[0092] In some embodiments, before sending the reference signal to the terminal 101, the network device 102 may send a configuration of the reference signal to the terminal 101.

[0093] In some embodiments, before sending the reference signal to the terminal 101, the network device 102 may send a configuration of beam measurement to the terminal 101.

[0094] Step S201, the terminal 101 sends first information to the network device 102.

[0095] In some embodiments, after the terminal 101 receives the reference signal from the network device 102, the terminal may determine a resource with the strongest received energy of the reference signal; and send the first information to the network device 102, where the first information is used to indicate index information corresponding to the resource with the strongest received energy of the reference signal.

[0096] In some embodiments, after the network device 102 sends the reference signal to the terminal 101, it may receive the first information sent by the terminal, where the first information is used to indicate index information corresponding to the resource with the strongest received energy of the reference signal.

[0097] In some embodiments, the index information may include: a subcarrier index SI, and the subcarrier index is used to indicate a subcarrier corresponding to a resource unit with the strongest received energy in the resource unit where the terminal receives the reference signal.

[0098] In some embodiments, the subcarrier index SI is used to indicate a subcarrier corresponding to a resource unit with the strongest received energy in a resource unit set; where the resource unit set is a subset of all resource units where the terminal receives the reference signal.

[0099] In some embodiments, the index information may include: a subcarrier group index SGI, which is used to indicate a subcarrier group corresponding to a resource unit group with the strongest average received energy among the resource unit groups for the terminal to receive the reference signal.

[0100] In some embodiments, the subcarrier group index SGI is used to indicate a subcarrier group corresponding to a resource unit group with the strongest average received energy among the resource unit groups divided based on a resource unit set; wherein, the resource unit set is a subset of all resource units for the terminal to receive the reference signal.

[0101] In some embodiments, the index information may include the subcarrier index and the subcarrier group index.

[0102] In some embodiments, the network device 102 may send a configuration of the index information to the terminal.

[0103] In some embodiments, the configuration of the index information may include an SI configuration and / or an SGI configuration.

[0104] In some embodiments, the SI configuration includes at least one of the following: a resource unit set, which is a subset of all resource units for the terminal to receive the reference signal; the correspondence between each resource unit and an index number.

[0105] In some embodiments, the SGI configuration includes at least one of the following: a resource unit group; the correspondence between each resource unit group and an index number.

[0106] In some embodiments, the terminal 101 may determine a resource with the strongest received energy of the reference signal based on a configuration of beam measurement.

[0107] In some embodiments, the terminal 101 may determine index information corresponding to a resource with the strongest received energy of the reference signal based on a configuration of the index information, and send a first piece of information to the network device 102.

[0108] Step S203, the network device 102 determines the direction or angle of the terminal based on the first piece of information.

[0109] In some embodiments, the network device 102 may determine the direction or angle of the terminal based on the index information indicated by the first piece of information.

[0110] In some embodiments, the network device 102 may determine a first subcarrier based on the index information; and determine the direction or angle of the terminal based on a first carrier frequency corresponding to the first subcarrier.

[0111] In some embodiments, the network device 102 may determine a first subcarrier based on the index information; and determine the direction or angle of the terminal based on the first carrier frequency corresponding to the first subcarrier and the central carrier frequency corresponding to the reference signal.

[0112] In some embodiments, the network device 102 may determine a first subcarrier based on the index information; and determine the direction or angle of the terminal based on the ratio of the central carrier frequency to the first carrier frequency.

[0113] In some embodiments, the network device 102 may determine a first subcarrier based on the index information; and determine the direction or angle of the terminal through the following formula:

[0114] where θ represents the direction or angle of analog beamforming when sending a reference signal to the terminal, θ m the direction or angle of the terminal, f c represents the central carrier frequency corresponding to the reference signal, f m represents the carrier frequency corresponding to the m-th subcarrier, and the m-th subcarrier is the first subcarrier.

[0115] In some embodiments, after determining the direction or angle of the terminal based on the index information, the network device 102 may determine compensation precoding information; use the compensation precoding information to adjust the direction or angle of the analog beamforming to the direction or angle of the terminal, and eliminate the array gain loss caused by beam squint.

[0116] The communication method according to the embodiments of the present disclosure may include at least one of steps S201 to step 203. For example, step S201 may be implemented as an independent embodiment, step S202 may be implemented as an independent embodiment, step S203 may be implemented as an independent embodiment, any two of steps S201, S202, and S203 may be implemented as independent embodiments, and step S201 + S202 + S203 may be implemented as an independent embodiment, but not limited thereto.

[0117] In some embodiments, steps S201, S202, and S203 may be exchanged in order or executed simultaneously.

[0118] In some embodiments, step S201 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0119] In some embodiments, step S202 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0120] In some embodiments, step S203 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0121] In some embodiments, reference may be made to Figure 2 other alternative embodiments described before or after the corresponding specification.

[0122] In some embodiments, with the continuous development of wireless communication, the requirements for communication capabilities are also getting higher and higher. For future application scenarios such as Augmented Reality (AR) / Virtual Reality (VR), vehicle-to-everything (V2X), Internet of Things (IoT), holographic communication, and ultra-high-definition video transmission, ultra-high speed, ultra-low latency, and ultra-large bandwidth communication have become the norm. The existing bandwidths of Frequency Range 1 (FR1) and Frequency Range 2 (FR2) are limited and cannot support the above services. Therefore, higher frequency bands such as sub-THz and THz need to be used. According to the electromagnetic wave space path loss model, the free space path loss of high frequencies is higher, and the same transmit power results in a shorter radiation distance. Therefore, large-scale MIMO beamforming is required to solve the problem of short transmission distance.

[0123] The width of the beam is related to the scale of the antenna array and the frequency, that is, the higher the frequency, the narrower the beam, and the larger the scale of the antenna array, the narrower the beam. This results in extremely narrow beams for high-frequency large-scale MIMO. Therefore, to cover the same cell, a high-frequency large-scale MIMO system requires more beams than a New Radio (NR) system. And because high-frequency electromagnetic waves have poor reflection and diffraction capabilities, it is generally considered that there is only a Line of sight (Los) path.

[0124] Taking terahertz as an example, due to the relatively high frequency of the terahertz band, if MIMO beamforming is used, its beam will become extremely narrow, and the coverage range and angle of a single beam are very small. As the user moves, frequent beam switching is bound to occur. Therefore, frequent beam measurements are required during the beam tracking phase. The beam measurement method in related technologies is to measure the beams in the candidate beam set one by one, and the time required to complete one round of measurement is relatively long. And because the terminal is continuously moving, it is possible that the candidate beam set has not been completed yet, and the current working beam has already failed. This will cause the terminal to consider the beam to have failed and needs to re-initiate random access.

[0125] In some embodiments, when performing beam measurement, cyclic delay diversity (CDD) precoding can also be used to perform delay precoding on different antenna ports using a delay device, achieving the effect of superimposing different phases on different subcarriers in the frequency domain. As a result, the beam directions formed by different subcarriers in the frequency domain are different, presenting a wide beam state, which can greatly reduce the beam measurement speed. However, since this method requires adding CDD precoding, a delay circuit network needs to be added in hardware, increasing the hardware cost. Moreover, the precoding scheme is a closed-loop precoding, and the terminal needs to feedback the precoding information, increasing the consumption of communication resources.

[0126] In a first aspect, embodiments of the present disclosure propose a beam measurement method. Figure 3A FIG. is a schematic flowchart of a beam measurement method shown according to an embodiment of the present disclosure. The beam measurement method shown in this embodiment can be executed by a network device.

[0127] As Figure 3A shown, the beam measurement method may include the following steps:

[0128] In step S301, a reference signal is sent to the terminal, and the reference signal is used for beam measurement.

[0129] In some embodiments, when the network device performs beam measurement with the terminal, it can send a reference signal to the terminal, and the reference signal is used for beam measurement. The direction or angle of the analog beamforming used by the network device to send the reference signal to the terminal still follows the direction or angle of the terminal determined before beam measurement, which can be referred to as the initial direction or angle in the following embodiments.

[0130] Wherein, the reference signal may include at least one of the following: channel state information reference signal (CSI-RS), synchronization signal block (SSB), etc.

[0131] In step S302, the first information sent by the terminal is received, and the first information is used to indicate the index information corresponding to the resource with the strongest received energy of the reference signal.

[0132] Wherein, the resource with the strongest received energy may be the resource unit with the strongest received energy or the resource unit group with the strongest received energy.

[0133] It should be noted that in a high-frequency system, the bandwidth is generally large. Due to the large wavelength difference between different subcarriers, under the action of the same analog beamforming vector, a beam squint phenomenon will occur. The beam will spread to other directions like the dispersion of light, deviating from the line of sight (target direction), and the angle of the beam deviating from the line of sight changes with the signal frequency. This phenomenon will cause a loss of the gain of the transmitting antenna array, turning the original narrow beam into a wide beam.

[0134] As Figure 3B shown, when the network device sends a reference signal to the terminal, due to the beam squint phenomenon, the beam direction of the reference signal will shift at different carrier frequencies f l , f c and f h .

[0135] In some embodiments, when the terminal performs beam measurement, it can receive a reference signal from the network device. The reference signal is used for beam measurement, and the strength of the received energy of the received reference signal in each resource unit is calculated to determine the resource unit with the strongest received energy therefrom, and the index information corresponding to the resource with the strongest received energy.

[0136] For example, as Figure 3B shown, if the terminal does not move, the resource unit with the strongest received energy is the resource unit where the central carrier frequency f c of the reference signal is located; if the terminal moves downward, the resource unit with the strongest received energy can be the resource unit where f l is located; if the terminal moves upward, the resource unit with the strongest received energy can be the resource unit where f h is located.

[0137] In some embodiments, the network device can receive first information from the terminal. The first information is used to indicate the index information of the resource with the strongest received energy of the reference signal. The first information can be referred to as auxiliary information for beam measurement.

[0138] In step S303, the direction or angle of the terminal is determined based on the index information.

[0139] In some embodiments, after receiving the first information from the terminal, the network device can calculate the current direction or angle of the terminal based on the index information indicated by the first information. Furthermore, the network device can adjust the direction or angle of analog beamforming based on the current direction or angle of the terminal to achieve beam measurement and beam switching during the movement of the terminal.

[0140] In some embodiments, after receiving the first information from the terminal, the network device may determine whether the terminal has moved based on the index information indicated by the first information; if the terminal has moved, the network device may calculate the offset of the terminal based on the resource with the strongest received reference signal energy indicated by the index information, or calculate the current direction or angle of the terminal. Furthermore, the network device may adjust the direction or angle of analog beamforming based on the current direction or angle of the terminal, so as to implement beam measurement and beam switching during the movement of the terminal.

[0141] It should be noted that the technical solution of the embodiments of this application is applicable to high-frequency large-scale MIMO communication systems, such as MIMO communication systems using THz or sub-THz.

[0142] It should be noted that Figure 3A The illustrated embodiments can be implemented independently or in combination with at least one other embodiment in the present disclosure, and can be specifically selected according to needs. The present disclosure does not limit this.

[0143] Based on the technical solution of the above embodiments, this application utilizes the beam squint phenomenon in the high-frequency system. In the beam measurement stage, the network device only needs to send a reference signal to the terminal once and receive the index information indicating the resource with the strongest received reference signal energy feedback by the terminal, and then can determine the current direction or angle of the terminal based on the index information, so as to quickly complete beam measurement. It can be seen that the technical solution implemented in this application does not need to perform beam measurement on each beam in the beam candidate set in turn, greatly reducing the time of beam measurement, and does not need to add a delay circuit network for precoding, reducing the hardware cost.

[0144] In some embodiments, before step S301, the network device may also send second information to the terminal, and the second information is used to indicate whether to report the first information to the network device when reporting CSI. The second information may be included in the reference signal report configuration sent by the network device to the terminal, for example, the report configuration of the channel state information reference signal (CSI-RS reporting configuration).

[0145] In some embodiments, the network device may send second information to the terminal, and the second information is used to indicate to the terminal to report the first information to the network device when reporting CSI. After the network device sends a reference signal for beam measurement to the terminal, it may receive the first information from the terminal and determine the current direction or angle of the terminal based on the index information corresponding to the resource with the strongest received reference signal energy indicated by the first information.

[0146] In some embodiments, the index information indicated by the first information may include at least one of the following: a sub-carrier index (SI), which is used to indicate the sub-carrier corresponding to the resource unit with the strongest received energy in the resource units where the terminal receives the reference signal; a sub-carrier group index (SGI), which is used to indicate the sub-carrier group corresponding to the resource unit group with the strongest average received energy in the resource unit groups where the terminal receives the reference signal.

[0147] In some embodiments, the index information indicated by the first information includes SI, and the SI can be used to indicate the sub-carrier corresponding to the resource unit with the strongest received energy among all resource units in the entire bandwidth of the reference signal resource; or, it can be used to indicate the sub-carrier corresponding to the resource unit with the largest received energy among some resource units in the reference signal resource. Among them, some resources in the reference signal resource can be represented by a resource unit set, where the resource unit set is a subset of all resource units in the entire bandwidth of the reference signal resource.

[0148] In some embodiments, the network device may send an SI configuration to the terminal, and the SI configuration can be used to indicate the correspondence between each resource unit and an index number. Based on the SI configuration, when receiving the reference signal sent by the network device, the terminal can calculate the strength of the received energy of each resource unit, determine the resource unit with the strongest received energy therefrom, and report the SI to the network device through the first information, and the SI may include the index number corresponding to the resource unit with the strongest received energy.

[0149] For example, the reference signal resource includes M resource units {R#1, R#2,..., R#M, R#M} in the entire bandwidth, and the SI configuration can configure an index number {SI = m, m = 1, 2,..., M} for each resource unit. When receiving the reference signal sent by the network device, the terminal can measure the strength of the received energy of all resource units based on this SI configuration, and determine that the resource unit with the strongest received energy is, if it is R#6, then the index number 6 corresponding to RE#6 can be used as the SI and reported to the network device through the first information. The network device can determine that the resource unit with the strongest received energy is R#6 based on the index number 6, and determine the current direction or angle of the terminal based on the sub-carrier corresponding to the resource unit R#6.

[0150] In some embodiments, considering that the beam squint effect of adjacent sub-carriers is not obvious, therefore, the SI configuration can be used to indicate a resource unit set, and the correspondence between each resource unit in the resource unit set and an index number.

[0151] Among them, the determination method of the resource element set can be set according to actual needs. For example, based on a preset interval, resource elements are selected at intervals among all resource elements in the entire bandwidth of the reference signal resource to form a resource element set.

[0152] For example, as Figure 3C shown, the resource of the reference signal includes M resource elements {R#1, R#2, ……, R#M-1, R#M} in the entire bandwidth. The SI configuration can indicate a resource element set {R#1, R#5, R#9, ……} composed of some resource elements among the M resource elements. It can be seen that every three resource elements are taken to form this resource element set. The SI configuration can also configure an index number {SI = m, m = 1, 2, ……, M / 4} for each resource element in the resource element set. When the terminal receives the reference signal sent by the network device, it can measure the received energy strength of each resource element in the resource element set based on this SI configuration, and determine the resource element with the strongest received energy from the resource element set. If it is R#5, the index number 2 corresponding to R#5 can be used as SI and reported to the network device through the first information. The network device can determine that the resource element with the strongest received energy is R#5 based on the index number 2, and determine the current direction or angle of the terminal based on the subcarrier corresponding to the resource element R#5.

[0153] In some embodiments, the SI can include one index number to indicate the subcarrier corresponding to a resource element with the strongest received energy, or can include multiple index numbers to indicate the subcarriers corresponding to multiple resource elements with the strongest received energy. The number of index numbers carried by the SI can also be indicated by the network device through SI configuration, or predefined by the protocol, etc.

[0154] In some embodiments, the index information indicated by the first information includes SGI, and the SGI can be used to indicate the subcarrier group corresponding to the resource element group with the strongest average received energy in the resource element group where the terminal receives the reference signal. Each resource element group can include multiple resource elements of the reference signal.

[0155] In some embodiments, the network device can send SGI configuration to the terminal. The SGI configuration can include all resource element groups used to indicate the reference signal, and the corresponding relationship between each resource element group and the index number. When the terminal receives the reference signal sent by the network device, it can calculate the average received energy of each resource element group, determine the resource element group with the strongest average received energy from them, and report SGI to the network device through the first information. The SGI can include the index number corresponding to the resource element group with the strongest average received energy.

[0156] For example, the SGI configuration may indicate S resource element groups {RG#1, RG#2, ……, RG#S-1, RG#S} of the reference signal, where each resource element group may include 4 connected resource elements. RG#1 includes R#1 to R#4, RG#2 includes R#5 to R#8, and so on. The SGI configuration may also configure an index number {SGI = n, n = 1, 2, ……, S} for each resource element group. When the terminal receives the reference signal sent by the network device, it can calculate the strength of the average received energy of each resource element group based on this SGI configuration, and determine the resource element group with the strongest average received energy. If it is S#2, the index number 2 corresponding to S#2 can be used as the SGI and reported to the network device through the first information. The network device can determine that the resource element group with the strongest received energy is S#2 based on the index number 2, and determine the direction or angle of the terminal based on the subcarrier corresponding to a certain RE in the resource elements R#5 to R#8 in the resource element group S#2.

[0157] In some embodiments, each resource element group of the SGI configuration may include a plurality of consecutive resource elements, or may also include a plurality of non-connected resource elements, for example, a plurality of equally spaced resource elements.

[0158] In some embodiments, SGI can be used to indicate the subcarrier group corresponding to the resource element group with the strongest average received energy among the resource element groups divided based on the resource element set; wherein, the resource element set is a subset of all resource elements for the terminal to receive the reference signal.

[0159] The SGI configuration can be used to indicate the resource element set; the resource element groups divided based on the resource element set; and the corresponding relationship between each resource element group and the index number.

[0160] For example, as Figure 3DAs shown, the SGI configuration may indicate S resource element groups {RG#1, RG#2, ……, RG#S-1, RG#S} of the reference signal, where each resource element group may include 3 equally spaced resource elements. Among them, RG#1 includes {R#1, R#5, R#9}, RG#2 includes {R#13, R#17, R#21}, and so on. The SGI configuration may also configure an index number {SGI = n, n = 1, 2, ……, S} for each resource element group. When the terminal receives the reference signal sent by the network device, it may calculate the strength of the average received energy of each resource element group based on this SGI configuration, and determine the resource element group with the strongest average received energy. If it is S#2, the index number 2 corresponding to S#2 may be used as the SGI and reported to the network device through the first information. The network device may determine that the resource element group with the strongest received energy is S#2 based on the index number 2, and determine the direction or angle of the terminal based on the subcarrier corresponding to a certain RE in the resource elements {R#13, R#17, R#21} of the resource element group S#2.

[0161] In some embodiments, the SGI may include an index number to indicate the subcarrier group corresponding to the resource element group with the strongest average received energy, or may include multiple index numbers to indicate the subcarrier groups corresponding to multiple resource element groups with the strongest received energy. The number of index numbers carried by the SGI may also be indicated by the network device through the SI configuration, or predefined by the protocol, etc.

[0162] In some embodiments, after receiving the first information from the terminal, the network device may determine the first subcarrier based on the index information indicated by the first information, that is, use this first subcarrier as the subcarrier corresponding to the resource element with the strongest received energy of the terminal receiving the reference signal. Then, based on the first carrier frequency corresponding to the first subcarrier and the center carrier frequency corresponding to the reference signal, the direction or angle of the terminal is determined.

[0163] In some embodiments, if the index information indicated by the first information includes SI, after receiving the first information from the terminal, the network device may determine the resource element corresponding to the index number based on the index number indicated by the SI, and use the subcarrier corresponding to this resource element as the first subcarrier.

[0164] In some embodiments, if the index information indicated by the first information includes SGI, after the terminal receives the first information, the network device may determine the resource element group corresponding to the index number based on the index number indicated by the SGI, and select the first subcarrier from the subcarrier group corresponding to this resource element group.

[0165] Among them, the method of selecting the first subcarrier from the subcarrier group can be various. For example, it can be randomly selected or the subcarrier in the middle can be selected.

[0166] In some embodiments, after the network device determines the first subcarrier based on the index information, the method of determining the direction or angle of the terminal based on the first carrier frequency corresponding to the first subcarrier can be various. For example, it can be based on the ratio or difference between the central carrier frequency corresponding to the reference signal and the first carrier frequency to calculate the direction or angle of the terminal.

[0167] In some embodiments, after the network device determines the first subcarrier based on the index information, it can first determine whether to re-determine the direction or angle of the terminal based on the first carrier frequency corresponding to the first subcarrier and the central carrier frequency corresponding to the reference signal. For example, if the difference between the central carrier frequency and the first carrier frequency reaches a preset frequency domain value, it is determined that the direction or angle of the terminal needs to be newly determined, and the direction or angle of the terminal is calculated based on the ratio of the central carrier frequency and the first carrier frequency.

[0168] In one implementation manner, the network device can use the following formula to calculate the direction or angle of the terminal:

[0169] Among them, θ represents the direction or angle of the analog beamforming when sending the reference signal to the terminal, θ m the direction or angle of the terminal, f c represents the central carrier frequency corresponding to the reference signal, f m represents the carrier frequency corresponding to the m-th subcarrier, and the m-th subcarrier is the first subcarrier.

[0170] In some embodiments, after the network device receives the first information from the terminal and determines the direction or angle of the terminal based on the index information indicated by the first information, the network device can adjust the direction or angle of the analog beamforming to the calculated direction or angle of the terminal, and send beam adjustment result information or data, etc. to the terminal based on the adjusted direction or angle of the analog beamforming.

[0171] In some embodiments, after the network device receives the first information from the terminal and determines the direction or angle of the terminal based on the index information indicated by the first information, the network device may first determine whether to adjust the direction or angle of analog beamforming. For example, if the difference between the direction or angle of the terminal and the current direction or angle of analog beamforming reaches a preset angle threshold, the network device adjusts the direction or angle of analog beamforming to the calculated direction or angle of the terminal, and sends beam adjustment result information or data to the terminal based on the adjusted direction or angle of analog beamforming.

[0172] In some embodiments, the method for the network device to adjust the direction or angle of analog beamforming may include: determining compensation precoding information, using the compensation precoding information to adjust the direction or angle of the analog beamforming to the direction or angle of the terminal, and eliminating the array gain loss caused by beam squint.

[0173] In some embodiments, before the network device sends a reference signal to the terminal, the network device may also send relevant configurations for beam measurement to the terminal, including at least one of the following: the configuration of the reference signal; the configuration of the beam measurement; the configuration of the index information.

[0174] Among them, the configuration of the reference signal can be used to indicate the resources of the reference signal. For example, it can be used to indicate CSI-RS resource; the configuration of the beam measurement can be used to indicate the strength of the received energy of the terminal measuring the reference signal in each resource unit, and the method for determining the resource unit with the strongest received energy; the configuration of the index information may include SI configuration and / or SGI configuration.

[0175] In some embodiments, as Figure 3E shown, the beam measurement method proposed in the embodiments of the present application includes the following steps:

[0176] S311. The network device sends relevant configurations for beam measurement and second information to the terminal; among them, the relevant configurations may include at least one of the following: the configuration of the reference signal; the configuration of the beam measurement; the configuration of the index information; the second information is used to instruct the terminal to report the first information to the network device;

[0177] S312. The network device sends a reference signal to the terminal, and the reference signal is used for beam measurement;

[0178] S313. The terminal measures the strength of the received energy of each reference signal in each resource unit, and determines the resource unit with the strongest received energy and / or determines the resource unit group with the strongest average received energy;

[0179] S314. The terminal sends first information to the network device, where the first information may indicate the index information corresponding to the resource with the strongest received reference signal energy; wherein, the index information may include SI and / or SGI, the SI is used to indicate the subcarrier corresponding to the resource element with the strongest received energy in the resource element where the terminal receives the reference signal, and the SGI is used to indicate the subcarrier group corresponding to the resource element group with the strongest average received energy in the resource element group where the terminal receives the reference signal.

[0180] S315. The network device determines a first subcarrier based on the index information indicated by the first information.

[0181] S316. The network device determines the direction or angle of the terminal based on the first carrier frequency corresponding to the first subcarrier and the central carrier frequency corresponding to the reference signal.

[0182] S317. The network device determines compensation precoding information based on the direction or angle of the terminal.

[0183] S318. The network device uses the compensation precoding information to adjust the direction or angle of the analog beamforming to the direction or angle of the terminal, and eliminates the array gain loss caused by beam squint.

[0184] In a second aspect, an embodiment of the present disclosure proposes a beam measurement method. Figure 4 FIG. is a schematic flowchart of a beam measurement method shown according to an embodiment of the present disclosure. The beam measurement method shown in this embodiment may be executed by a network device.

[0185] As Figure 4 shown, the beam measurement method may include the following steps:

[0186] In step S401, a reference signal for beam measurement is received from the network device.

[0187] In some embodiments, when the terminal performs beam measurement with the network device, it may receive a reference signal for beam measurement from the network device. Wherein, when the network device sends the reference signal to the terminal, the direction or angle of the analog beamforming used still follows the direction or angle of the terminal determined before the beam measurement, which may be referred to as the initial direction or angle in the following embodiments.

[0188] Wherein, the reference signal may include at least one of the following: CSI-RS, SSB, etc.

[0189] In step S402, the resource with the strongest received reference signal energy is determined.

[0190] In some embodiments, when performing beam measurement, the terminal may receive a reference signal from a network device. The reference signal is used for beam measurement, and the terminal calculates the strength of the received energy of the reference signal in each resource unit to determine the resource unit with the strongest received energy therefrom.

[0191] Wherein, the resource with the strongest received energy may be the resource unit with the strongest received energy or a group of resource units with the strongest received energy.

[0192] In step S403, the first information sent to the network device is used to indicate the index information corresponding to the resource with the strongest received energy of the reference signal.

[0193] In some embodiments, after the terminal determines the resource with the strongest received energy, it may determine the index information corresponding to the resource with the strongest received energy and send the first information to the network device based on the index information. The first information is used to indicate the index information corresponding to the resource with the strongest received energy of the reference signal, so that after receiving the first information from the terminal, the network device can calculate the current direction of the terminal based on the index information indicated by the first information. Furthermore, the network device can adjust the direction or angle of analog beamforming based on the current direction or angle of the terminal to achieve beam measurement and beam switching during the movement of the terminal.

[0194] It should be noted that the technical solution of the embodiments of the present application is applicable to high-frequency large-scale MIMO communication systems, such as MIMO communication systems using THz or sub-THz.

[0195] It should be noted that Figure 4 The illustrated embodiments can be implemented independently or in combination with at least one other embodiment in the present disclosure, which can be specifically selected according to needs, and the present disclosure does not limit this.

[0196] According to the embodiments of the present disclosure, the present application utilizes the beam squint phenomenon in high-frequency systems. In the beam measurement phase, after receiving the reference signal sent by the network device, the terminal can determine the resource with the strongest received energy of the reference signal and feedback the index information indicating the resource with the strongest received energy of the reference signal to the network device, so that the network device can determine the current direction or angle of the terminal based on the index information to quickly complete beam measurement. It can be seen that the technical solution implemented in the present application does not require beam measurement for each beam in the beam candidate set in turn, greatly reducing the beam measurement time, and does not require adding a delay circuit network for precoding, reducing the hardware cost.

[0197] In some embodiments, before receiving a reference signal from a network device, a terminal may first receive second information from the network device, where the second information is used to instruct the terminal to report the first information to the network device when reporting CSI. After receiving the second information, the terminal may receive the reference signal sent by the network device; determine a resource with the strongest received energy of the reference signal; and send the first information to the network device, where the first information is used to indicate index information corresponding to the resource with the strongest received energy of the reference signal.

[0198] In some embodiments, the index information includes at least one of the following: a subcarrier index SI, where the subcarrier index is used to indicate a subcarrier corresponding to a resource element with the strongest received energy in the resource elements where the terminal receives the reference signal; a subcarrier group index SGI, where the subcarrier group index is used to indicate a subcarrier group corresponding to a resource element group with the strongest average received energy in the resource element groups where the terminal receives the reference signal.

[0199] In some embodiments, the index information indicated by the first information includes SI, and the SI can be used to indicate a subcarrier corresponding to a resource element with the strongest received energy among all resource elements in the entire bandwidth of the reference signal resource; or, it can be used to indicate a subcarrier corresponding to a resource element with the largest received energy among some resource elements in the reference signal resource. Among them, some resources in the reference signal resource can be represented by a resource element set, where the resource element set is a subset of all resource elements in the entire bandwidth of the reference signal resource.

[0200] In some embodiments, the terminal may receive an SI configuration from the network device, and the SI configuration can be used to indicate the correspondence between each resource element and an index number. The terminal may, based on the SI configuration, calculate the strength of the received energy of each resource element when receiving the reference signal sent by the network device, determine a resource element with the strongest received energy therefrom, and report SI to the network device through the first information, where the SI may include an index number corresponding to the resource element with the strongest received energy.

[0201] In some embodiments, the SI configuration can be used to indicate a resource element set and the correspondence between each resource element in the resource element set and an index number.

[0202] Among them, the determination method of the resource element set can be set according to actual needs. For example, based on a preset interval, resource elements are selected at intervals from all resource elements in the entire bandwidth of the reference signal resource to form a resource element set.

[0203] In some embodiments, the index information indicated by the first information includes SGI, and the SGI can be used to indicate a subcarrier group corresponding to a resource unit group with the strongest average received energy in the resource unit groups for the terminal to receive the reference signal. Each resource unit group may include multiple resource units of the reference signal.

[0204] In some embodiments, the terminal may send an SGI configuration to the network device. The SGI configuration may include all resource unit groups for indicating the reference signal and the corresponding relationship between each resource unit group and an index number. When the terminal receives the reference signal sent by the network device, it may calculate the average received energy of each resource unit group, determine the resource unit group with the strongest average received energy therefrom, and report the SGI to the network device through the first information. The SGI may include the index number corresponding to the resource unit group with the strongest average received energy.

[0205] In some embodiments, each resource unit group in the SGI configuration may include multiple consecutive resource units, or may also include multiple non - connected resource units. For example, multiple equally - spaced resource units.

[0206] In some embodiments, the SGI can be used to indicate a subcarrier group corresponding to a resource unit group with the strongest average received energy in the resource unit groups divided based on a resource unit set; wherein, the resource unit set is a subset of all resource units for the terminal to receive the reference signal.

[0207] The SGI configuration can be used to indicate the resource unit set; the resource unit groups divided based on the resource unit set; and the corresponding relationship between each resource unit group and an index number.

[0208] In some embodiments, after receiving the first information from the terminal, the network device may determine a first subcarrier based on the index information indicated by the first information, that is, use this first subcarrier as the subcarrier corresponding to the resource unit with the strongest received energy for the terminal to receive the reference signal. Then, based on the first carrier frequency corresponding to the first subcarrier and the central carrier frequency of the reference signal, the direction or angle of the terminal is determined.

[0209] In some embodiments, if the index information indicated by the first information includes SI, after receiving the first information from the terminal, the network device may determine a resource unit corresponding to the index number based on the index number indicated by the SI, and use the subcarrier corresponding to this resource unit as the first subcarrier.

[0210] In some embodiments, if the index information indicated by the first information includes SGI, after the network device receives the first information from the terminal, it may determine, based on the index number indicated by the SGI, a resource element group corresponding to the index number, and select a first subcarrier from the subcarrier group corresponding to the resource element group.

[0211] Among them, the method of selecting the first subcarrier from the subcarrier group can be various. For example, it can be randomly selected or the subcarrier in the middle can be selected.

[0212] In some embodiments, after the network device determines the first subcarrier based on the index information, the method of determining the direction or angle of the terminal based on the first carrier frequency corresponding to the first subcarrier can be various. For example, it can calculate the direction or angle of the terminal based on the ratio or difference between the central carrier frequency corresponding to the reference signal and the first carrier frequency.

[0213] In some embodiments, after the network device determines the first subcarrier based on the index information, it can first determine whether to re-determine the direction or angle of the terminal based on the first carrier frequency corresponding to the first subcarrier and the central carrier frequency corresponding to the reference signal. For example, if the difference between the central carrier frequency and the first carrier frequency reaches a preset frequency threshold, it is determined that the direction or angle of the terminal needs to be newly determined, and the direction or angle of the terminal is calculated based on the ratio between the central carrier frequency and the first carrier frequency.

[0214] In one implementation, the network device can use the following formula to calculate the direction or angle of the terminal:

[0215] Among them, θ represents the direction or angle of the analog beamforming when sending the reference signal to the terminal, θ m the direction or angle of the terminal, f c represents the central carrier frequency corresponding to the reference signal, f m represents the carrier frequency corresponding to the m-th subcarrier, and the m-th subcarrier is the first subcarrier.

[0216] In some embodiments, after the network device receives the first information from the terminal and determines the direction or angle of the terminal based on the index information indicated by the first information, the network device can adjust the direction or angle of the analog beamforming to the calculated direction or angle of the terminal, and send beam adjustment result information or data to the terminal based on the adjusted direction or angle of the analog beamforming.

[0217] In some embodiments, after the network device receives the first information from the terminal and determines the direction or angle of the terminal based on the index information indicated by the first information, the network device may first determine whether it is necessary to adjust the direction or angle of analog beamforming. For example, if the difference between the direction or angle of the terminal and the direction or angle of the current analog beamforming reaches a preset angle threshold, the direction or angle of the analog beamforming is adjusted to the calculated direction or angle of the terminal, and beam adjustment result information or data is sent to the terminal based on the adjusted direction or angle of the analog beamforming.

[0218] In some embodiments, the method for the network device to adjust the direction or angle of analog beamforming may include: determining compensation precoding information, using the compensation precoding information to adjust the direction or angle of the analog beamforming to the direction or angle of the terminal, and eliminating the array gain loss caused by beam squint.

[0219] In some embodiments, before the terminal receives the reference signal from the network device, the terminal may also receive the relevant configurations for beam measurement from the network device, including at least one of the following: the configuration of the reference signal; the configuration of the beam measurement; the configuration of the index information.

[0220] In some embodiments, the configuration of the index information includes SI configuration and / or SGI configuration.

[0221] In some embodiments, the SI configuration includes at least one of the following: a resource element set, where the resource element set is a subset of all resource elements for the terminal to receive the reference signal; the correspondence between each resource element and the index number.

[0222] In some embodiments, the SGI configuration includes at least one of the following: a resource element group; the correspondence between each resource element group and the index number.

[0223] Among them, the configuration of the reference signal can be used to indicate the resources of the reference signal; the configuration of the beam measurement can be used to indicate the strength of the received energy of the reference signal measured by the terminal in each resource element, and the method for determining the resource element with the strongest received energy; the configuration of the index information can include SI configuration and / or SGI configuration.

[0224] In some embodiments, the names of information and the like are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", "chip", etc. may be replaced with each other.

[0225] In some embodiments, terms such as "moment", "time point", "time", "time position", etc. may be replaced with each other, and terms such as "duration", "time period", "time window", "window", "time", etc. may be replaced with each other.

[0226] In some embodiments, terms such as "component carrier (CC)", "cell", "frequency carrier", "carrier frequency", etc. may be replaced with each other.

[0227] In some embodiments, "acquire", "obtain", "get", "receive", "transmit", "two-way transmission", "send and / or receive" may be replaced with each other, and it can be interpreted as receiving from other entities, obtaining from a protocol, obtaining from a higher layer, self-processing to obtain, self-implementation, and other multiple meanings.

[0228] In some embodiments, terms such as "send", "transmit", "report", "send down", "transmit", "two-way transmission", "send and / or receive", etc. may be replaced with each other.

[0229] Corresponding to the embodiments of the foregoing beam measurement method, the present disclosure also provides embodiments of a terminal and a network device.

[0230] An embodiment of the present disclosure also provides a network device, including: one or more processors; a memory coupled to the processor, where executable instructions are stored on the memory, and when the executable instructions are executed by the processor, the network device is caused to execute the beam measurement method described in the foregoing embodiments.

[0231] Figure 5 is a schematic block diagram of the device structure of a network device shown according to an embodiment of the present disclosure. As Figure 5 shown, the network device may be a beam measurement device, and the device includes a processing module 501 and a transceiver module 502.

[0232] In some embodiments, the transceiver module 502 is configured to send a reference signal to a terminal, where the reference signal is used for beam measurement; receive first information sent by the terminal, where the first information is used to indicate index information corresponding to a resource with the strongest received energy of the reference signal; and the processing module 501 is configured to determine the direction or angle of the terminal based on the index information.

[0233] In some embodiments, the index information includes at least one of the following: a subcarrier index SI, where the subcarrier index is used to indicate a subcarrier corresponding to a resource unit with the strongest received energy in a resource unit where the terminal receives the reference signal; a subcarrier group index SGI, where the subcarrier group index is used to indicate a subcarrier group corresponding to a resource unit group with the strongest average received energy in a resource unit group where the terminal receives the reference signal.

[0234] In some embodiments, the subcarrier index SI is used to indicate a subcarrier corresponding to a resource unit with the strongest received energy in a set of resource units; where the set of resource units is a subset of all resource units where the terminal receives the reference signal.

[0235] In some embodiments, the subcarrier group index SGI is used to indicate a subcarrier group corresponding to a resource unit group with the strongest average received energy in a resource unit group divided based on a set of resource units; where the set of resource units is a subset of all resource units where the terminal receives the reference signal.

[0236] In some embodiments, the processing module 501 is configured to determine a first subcarrier based on the index information; and determine the direction or angle of the terminal based on a first carrier frequency corresponding to the first subcarrier.

[0237] In some embodiments, the processing module 501 is configured to determine a first subcarrier based on the index information; and determine the direction or angle of the terminal based on a first carrier frequency corresponding to the first subcarrier and a center carrier frequency corresponding to the reference signal.

[0238] In some embodiments, the processing module 501 is configured to determine the direction or angle of the terminal based on a ratio of the center carrier frequency to the first carrier frequency.

[0239] In some embodiments, the processing module 501 is configured to determine the direction or angle of the terminal through the following formula:

[0240] wherein, θ represents the direction or angle of analog beamforming when sending a reference signal to the terminal, and θ m is the direction or angle of the terminal, and f c represents the central carrier frequency corresponding to the reference signal, and f m represents the carrier frequency corresponding to the m-th subcarrier, and the m-th subcarrier is the first subcarrier.

[0241] In some embodiments, the processing module 501 is further configured to determine compensation precoding information; use the compensation precoding information to adjust the direction or angle of the analog beamforming to the direction or angle of the terminal, and eliminate the array gain loss caused by beam squint.

[0242] In some embodiments, the transceiver module 502 is further configured to send second information to the terminal, and the second information is used to instruct the terminal to send the first information.

[0243] In some embodiments, the transceiver module 502 is further configured to send the configuration of the reference signal to the terminal.

[0244] In some embodiments, the transceiver module 502 is further configured to send the configuration of the beam measurement to the terminal.

[0245] In some embodiments, the transceiver module 502 is further configured to send the configuration of the index information to the terminal.

[0246] In some embodiments, the configuration of the index information includes SI configuration and / or SGI configuration.

[0247] In some embodiments, the SI configuration includes at least one of the following: a resource element set, where the resource element set is a subset of all resource elements for the terminal to receive the reference signal; the correspondence between each resource element and an index number.

[0248] In some embodiments, the SGI configuration includes at least one of the following: a resource element group; the correspondence between each resource element group and an index number.

[0249] It should be noted that the modules included in the network device are not limited to the modules described in the above embodiments, and may also include other modules, such as a storage module, a display module, etc.

[0250] An embodiment of the present disclosure also provides a terminal, including: one or more processors; a memory coupled to the processor, and an executable instruction is stored on the memory, wherein when the executable instruction is executed by the processor, the terminal executes the beam measurement method described in the above embodiments.

[0251] Figure 6 is a schematic block diagram of the device structure of a terminal shown according to an embodiment of the present disclosure. As Figure 6 shown, the terminal may be a beam measurement device, and the device includes a processing module 601 and a transceiver module 602.

[0252] In some embodiments, the transceiver module 602 is configured to receive a reference signal from a network device, where the reference signal is used for beam measurement; the processing module 601 is configured to determine a resource with the strongest received energy of the reference signal; the transceiver module 602 is configured to send first information to the network device, where the first information is used to indicate index information corresponding to the resource with the strongest received energy of the reference signal.

[0253] In some embodiments, the index information includes at least one of the following: a subcarrier index SI, where the subcarrier index is used to indicate a subcarrier corresponding to a resource unit with the strongest received energy in a resource unit where the terminal receives the reference signal; a subcarrier group index SGI, where the subcarrier group index is used to indicate a subcarrier group corresponding to a resource unit group with the strongest average received energy in a resource unit group where the terminal receives the reference signal.

[0254] In some embodiments, the subcarrier index SI is used to indicate a subcarrier corresponding to a resource unit with the strongest received energy in a resource unit set; where the resource unit set is a subset of all resource units where the terminal receives the reference signal.

[0255] In some embodiments, the subcarrier group index SGI is used to indicate a subcarrier group corresponding to a resource unit group with the strongest average received energy in a resource unit group divided based on a resource unit set; where the resource unit set is a subset of all resource units where the terminal receives the reference signal.

[0256] In some embodiments, the transceiver module 602 is further configured to receive second information from the network device, where the second information is used to indicate that the terminal sends the first information.

[0257] In some embodiments, the transceiver module 602 is further configured to receive a configuration of the reference signal from the network device.

[0258] In some embodiments, the transceiver module 602 is further configured to receive a configuration of the beam measurement from the network device.

[0259] In some embodiments, the transceiver module 602 is further configured to receive a configuration of the index information from the network device.

[0260] In some embodiments, the configuration of the index information includes an SI configuration and / or an SGI configuration.

[0261] In some embodiments, the SI configuration includes at least one of the following: a set of resource units, where the set of resource units is a subset of all resource units for the terminal to receive the reference signal; the correspondence between each resource unit and an index number.

[0262] In some embodiments, the SGI configuration includes at least one of the following: a group of resource units; the correspondence between each group of resource units and an index number.

[0263] It should be noted that the modules included in the terminal are not limited to those described in the above embodiments, and may also include other modules, such as a storage module, a display module, etc.

[0264] For the device embodiments, since they basically correspond to the method embodiments, the relevant parts can be referred to the partial descriptions of the method embodiments. The device embodiments described above are merely illustrative. Among them, the modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in one place, or may be distributed to multiple network modules. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0265] Embodiments of the present disclosure also propose a communication device, including: one or more processors; a memory coupled to the processor, and executable instructions are stored on the memory, where when the executable instructions are executed by the processor, the processor calls the executable instructions to cause the communication device to execute the beam measurement method described in the above optional embodiments.

[0266] Embodiments of the present disclosure also propose a communication system, including a terminal and a network device. Among them, the terminal is configured to implement the beam measurement method described in the above optional embodiments, and the network device is configured to implement the beam measurement method described in the above optional embodiments.

[0267] Embodiments of the present disclosure also propose a storage medium, where the storage medium stores instructions, and when the instructions run on a communication device, the communication device is caused to execute the beam measurement method described in the above optional embodiments.

[0268] Embodiments of the present disclosure also propose a device for implementing any of the above methods. For example, a device is proposed, and the above device includes units or modules for implementing each step executed by the terminal in any of the above methods. Again, another device is proposed, including units or modules for implementing each step executed by a network device (such as an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0269] It should be understood that the division of each unit or module in the above device is only a division of logical functions. In actual implementation, all or part of them can be integrated into a physical entity, or physically separated. In addition, the units or modules in the device can be implemented in the form of a processor calling software. For example, the device includes a processor, the processor is connected to a memory, and instructions are stored in the memory. The processor calls the instructions stored in the memory to implement any of the above methods or the functions of each unit or module of the above device. The processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory inside or outside the device. Alternatively, the units or modules in the device can be implemented in the form of a hardware circuit, and the functions of some or all of the units or modules can be implemented by designing the hardware circuit. The above hardware circuit can be understood as one or more processors. For example, in one implementation, the above hardware circuit is an application-specific integrated circuit (ASIC), and the functions of some or all of the above units or modules are implemented by designing the logical relationship of the components in the circuit. Again, in another implementation, the above hardware circuit can be implemented by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured through a configuration file, so as to implement the functions of some or all of the above units or modules. All units or modules of the above device can be all implemented in the form of a processor calling software, or all implemented in the form of a hardware circuit, or part implemented in the form of a processor calling software, and the remaining part implemented in the form of a hardware circuit.

[0270] In the embodiments of the present disclosure, a processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP), etc.; in another implementation, the processor can implement certain functions through the logical relationship of a hardware circuit, and the logical relationship of the above hardware circuit is fixed or can be reconfigured. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document to implement the configuration of the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), a Deeplearning Processing Unit (DPU), etc.

[0271] Figure 7 FIG. 4 is a schematic structural diagram of a communication device 7100 proposed in the embodiments of the present disclosure. The communication device 7100 can be a network device (such as an access network device, a core network device, etc.), or a terminal (such as a user device, etc.), or a chip, a chip system, or a processor that supports the network device to implement any of the above methods, or a chip, a chip system, or a processor that supports the terminal to implement any of the above methods. The communication device 7100 can be used to implement the methods described in the above method embodiments, and for specific details, reference can be made to the descriptions in the above method embodiments.

[0272] As Figure 7As shown, the communication device 7100 includes one or more processors 7101. The processor 7101 can be a general-purpose processor or a dedicated processor, etc. For example, it can be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control communication devices (such as base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. The processor 7101 is used to call instructions to cause the communication device 7100 to execute any of the above methods.

[0273] In some embodiments, the communication device 7100 further includes one or more memories 7102 for storing instructions. Optionally, all or part of the memory 7102 can also be outside the communication device 7100.

[0274] In some embodiments, the communication device 7100 further includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, communication steps such as sending and receiving in the above methods are executed by the transceivers 7103, and other steps are executed by the processor 7101.

[0275] In some embodiments, the transceiver can include a receiver and a transmitter, and the receiver and the transmitter can be separate or integrated. Optionally, terms such as transceiver, transceiver unit, transceiver machine, transceiver circuit, etc. can be replaced with each other, terms such as transmitter, transmitter unit, transmitter machine, transmitter circuit, etc. can be replaced with each other, and terms such as receiver, receiver unit, receiver machine, receiver circuit, etc. can be replaced with each other.

[0276] Optionally, the communication device 7100 further includes one or more interface circuits 7104. The interface circuit 7104 is connected to the memory 7102. The interface circuit 7104 can be used to receive signals from the memory 7102 or other devices, and can be used to send signals to the memory 7102 or other devices. For example, the interface circuit 7104 can read the instructions stored in the memory 7102 and send the instructions to the processor 7101.

[0277] The communication device 7100 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 7100 described in this disclosure is not limited thereto, and the structure of the communication device 7100 can be independent of Figure 7Limitations. The communication device can be a stand-alone device or can be part of a larger device. For example, the communication device can be: 1) a stand-alone integrated circuit (IC), or chip, or system-on-chip or subsystem; (2) a set of one or more ICs, optionally, the above IC set can also include storage components for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0278] Figure 8 It is a schematic structural diagram of the chip 8200 proposed in an embodiment of the present disclosure. For the case where the communication device 7100 can be a chip or a system-on-chip, reference can be made to Figure 8 the schematic structural diagram of the chip 8200 shown, but not limited thereto.

[0279] The chip 8200 includes one or more processors 8201, and the processor 8201 is used to call instructions to cause the chip 8200 to execute any of the above methods.

[0280] In some embodiments, the chip 8200 further includes one or more interface circuits 8202. The interface circuit 8202 is connected to the memory 8203. The interface circuit 8202 can be used to receive signals from the memory 8203 or other devices, and the interface circuit 8202 can be used to send signals to the

[0281] memory 8203 or other devices. For example, the interface circuit 8202 can read the instructions stored in the memory 8203 and send the instructions to the processor 8201. Optionally, terms such as interface circuit, interface, transceiver pin, transceiver, etc. can be replaced with each other.

[0282] In some embodiments, the chip 8200 further includes one or more memories 8203 for storing instructions. Optionally, all or part of the memory 8203 can be outside the chip 8200.

[0283] The present disclosure also proposes a storage medium. Instructions are stored on the above storage medium. When the above instructions run on the communication device 7100, the communication device 7100 is caused to execute any of the above methods. Optionally, the above storage medium is an electronic storage medium. Optionally, the above storage medium is a computer-readable storage medium, but not limited thereto, and it can also be a storage medium readable by other devices. Optionally, the above storage medium can be a non-transitory storage medium, but not limited thereto, and it can also be a transitory storage medium.

[0284] The present disclosure also provides a program product. When the program product is executed by a communication device 7100, the communication device 7100 is caused to execute any of the above methods. Optionally, the program product is a computer program product.

[0285] The present disclosure also provides a computer program. When the computer program runs on a computer, the computer is caused to execute any of the above methods.

Claims

1. A beam measurement method, characterized in that, Performed by a network device, the method includes: Sending a reference signal to a terminal, the reference signal being used for beam measurement; Receiving first information sent by the terminal, the first information being used to indicate index information corresponding to a resource with the strongest received energy of the reference signal; Determining the direction or angle of the terminal based on the index information.

2. The method according to claim 1, characterized in that, The index information includes at least one of the following: Subcarrier index SI, the subcarrier index being used to indicate a subcarrier corresponding to a resource element with the strongest received energy in a resource element where the terminal receives the reference signal; Subcarrier group index SGI, the subcarrier group index being used to indicate a subcarrier group corresponding to a resource element group with the strongest average received energy in a resource element group where the terminal receives the reference signal.

3. The method according to claim 2, characterized in that The subcarrier index SI is used to indicate a subcarrier corresponding to a resource element with the strongest received energy in a resource element set; wherein, the resource element set is a subset of all resource elements where the terminal receives the reference signal.

4. The method according to claim 2, wherein The subcarrier group index SGI is used to indicate a subcarrier group corresponding to a resource element group with the strongest average received energy in a resource element group divided based on a resource element set; wherein, the resource element set is a subset of all resource elements where the terminal receives the reference signal.

5. The method according to any one of claims 1-4, characterized in that, The determining the direction or angle of the terminal based on the index information includes: Determining a first subcarrier based on the index information; Determining the direction or angle of the terminal based on a first carrier frequency corresponding to the first subcarrier.

6. The method according to claim 5, characterized in that, The determining the direction or angle of the terminal based on the first carrier frequency corresponding to the first subcarrier includes: Determining the direction or angle of the terminal based on the first carrier frequency corresponding to the first subcarrier and a central carrier frequency corresponding to the reference signal.

7. The method according to claim 6, characterized in that, The determining the direction of the terminal based on the first carrier frequency corresponding to the first subcarrier and the central carrier frequency corresponding to the reference signal includes: Determining the direction or angle of the terminal based on a ratio of the central carrier frequency and the first carrier frequency.

8. The method according to any one of claims 5-7, characterized in that, The determining the direction or angle of the terminal based on the first carrier frequency corresponding to the first subcarrier includes: Determining the direction or angle of the terminal through the following formula: Where, θ represents the direction or angle of analog beamforming used when sending a reference signal to the terminal, θ m is the direction or angle of the terminal, f c represents the central carrier frequency corresponding to the reference signal, f m represents the carrier frequency corresponding to the m-th subcarrier, and the m-th subcarrier is the first subcarrier.

9. The method according to any one of claims 1-8, characterized in that, After determining the direction or angle of the terminal based on the index information, the method further includes: Determining compensation precoding information; Using the compensation precoding information to adjust a direction or angle of the analog beamforming to the direction or angle of the terminal and eliminating an array gain loss caused by beam squint.

10. According to the method as claimed in any one of claims 1-9, characterized in that, Before sending the reference signal to the terminal, the method further includes: Sending second information to the terminal, the second information being used to indicate that the terminal sends the first information.

11. According to the method described in any one of claims 1-10, characterized in that, The method further includes: Sending a configuration of the reference signal to the terminal.

12. According to the method of any one of claims 1-11, characterized in that, The method further includes: Sending a configuration of the beam measurement to the terminal.

13. According to the method according to any one of claims 1-12, characterized in that, The method further includes: Sending a configuration of the index information to the terminal.

14. The method according to claim 13, wherein The configuration of the index information includes an SI configuration and / or an SGI configuration.

15. The method according to claim 14, wherein The SI configuration includes at least one of the following: A resource element set, the resource element set being a subset of all resource elements where the terminal receives the reference signal; The correspondence between each resource unit and the index number.

16. The method according to claim 14, wherein The SGI configuration includes at least one of the following: Resource unit group; The correspondence between each resource unit group and the index number.

17. A beam measurement method, characterized in that, Executed by the terminal, the method includes: Receiving a reference signal from a network device, the reference signal being used for beam measurement; Determining the resource with the strongest received energy of the reference signal; Sending first information to the network device, the first information being used to indicate the index information corresponding to the resource with the strongest received energy of the reference signal.

18. The method according to claim 17, wherein The index information includes at least one of the following: Subcarrier index SI, the subcarrier index being used to indicate the subcarrier corresponding to the resource unit with the strongest received energy in the resource unit where the terminal receives the reference signal; Subcarrier group index SGI, the subcarrier group index being used to indicate the subcarrier group corresponding to the resource unit group with the strongest average received energy in the resource unit group where the terminal receives the reference signal.

19. The method according to claim 18, characterized in that, The subcarrier index SI is used to indicate the subcarrier corresponding to the resource unit with the strongest received energy in the resource unit set; wherein, the resource unit set is a subset of all resource units where the terminal receives the reference signal.

20. The method according to claim 18, wherein The subcarrier group index SGI is used to indicate the subcarrier group corresponding to the resource unit group with the strongest average received energy in the resource unit group divided based on the resource unit set; wherein, the resource unit set is a subset of all resource units where the terminal receives the reference signal.

21. The method according to any one of claims 17 - 20, characterized in that, Before sending the reference signal to the terminal, the method further includes: Receiving second information from the network device, the second information being used to indicate that the terminal sends the first information.

22. The method according to any one of claims 17-21, characterized in that, The method further includes: Receiving the configuration of the reference signal from the network device.

23. The method according to any one of claims 17-22, characterized in that, The method further includes: Receiving the configuration of the beam measurement from the network device.

24. The method according to any one of claims 17-23, characterized in that, The method further includes: Receiving the configuration of the index information from the network device.

25. A beam measurement device, characterized in that, Includes: A transceiver module, configured to send a reference signal to a terminal, the reference signal being used for beam measurement; receive the first information sent by the terminal, the first information being used to indicate the index information corresponding to the resource with the strongest received energy of the reference signal; A processing module, configured to determine the direction or angle of the terminal based on the index information.

26. A beam measurement device, characterized in that, Includes: A transceiver module, configured to receive a reference signal from a network device, the reference signal being used for beam measurement; A processing module, configured to determine the resource with the strongest received energy of the reference signal; The transceiver module, configured to send first information to the network device, the first information being used to indicate the index information corresponding to the resource with the strongest received energy of the reference signal.

27. A network device, characterized in that, Includes: One or more processors; A memory coupled to the processor, where executable instructions are stored on the memory, and when the executable instructions are executed by the processor, the network device is caused to execute the beam measurement method according to any one of claims 1-16.

28. A terminal, characterized in that, Includes: One or more processors; A memory coupled to the processor, where executable instructions are stored on the memory, and when the executable instructions are executed by the processor, the terminal is caused to execute the beam measurement method according to any one of claims 17-24.

29. A communication device, characterized in that, Comprising: One or more processors; A memory coupled to the processor, on which executable instructions are stored, wherein when the executable instructions are executed by the processor, the processor is used to call instructions to cause the communication device to execute the beam measurement method according to any one of claims 1-16, or the beam measurement method according to any one of claims 17-24.

30. A communication system, characterized in that, Including a terminal and a network device, wherein the terminal is configured to implement the beam measurement method according to any one of claims 17-24, and the network device is configured to implement the beam measurement method according to any one of claims 1-16.

31. A storage medium, the storage medium stores instructions, characterized in that, When the instruction runs on the communication device, the communication device is caused to execute the beam measurement method according to any one of claims 1-16, or the beam measurement method according to any one of claims 17-24.

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