Beam measurement methods, network device, terminal and storage medium

Abstract

The present disclosure relates to the technical field of communications, and specifically relates to beam measurement methods, a network device, a terminal, and a storage medium. A beam measurement method comprises: 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 for indicating index information corresponding to a resource having the strongest reference signal reception energy; and, on the basis of the index information, determining the direction or angle of the terminal. Thus, beam measurement time can be shortened.

Description

Beam measurement method, network device, terminal and storage medium Technical Field

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

[0002] To meet the increasingly demanding communication capabilities, higher frequency bands, such as terahertz (THz) and sub-THz, need to be used, and large-scale multiple-input multiple-output (MIMO) beamforming is adopted. The beams become extremely narrow, resulting in a larger set of candidate beams and a longer time required to complete a round of beam measurements.

[0003] Summary of the Invention

[0004] The embodiments of the present disclosure propose a beam measurement method, a network device, a terminal, and a storage medium to solve the technical problem in related technologies that it takes a long time to complete a round of beam measurement.

[0005] According to a first aspect of an embodiment of the present disclosure, a beam measurement method is proposed, which is executed by a network device. The method includes: sending a reference signal to a terminal, wherein the reference signal is used for beam measurement; receiving first information sent by the terminal, wherein the first information is used to indicate index information corresponding to a resource with the strongest energy for receiving the reference signal; and determining the direction or angle of the terminal based on the index information.

[0006] According to the second aspect of an embodiment of the present disclosure, a beam measurement method is proposed, 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 the resource with the strongest energy for receiving 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 energy for receiving the reference signal.

[0007] According to the third aspect of an embodiment of the present disclosure, a beam measurement device is proposed, which includes: a transceiver module for sending a reference signal for beam measurement to a terminal; receiving first information sent by the terminal, the first information being used to indicate index information corresponding to a resource with the strongest energy for receiving the reference signal; and a processing module for determining the direction or angle of the terminal based on the index information.

[0008] According to the fourth aspect of an embodiment of the present disclosure, a beam measurement device is proposed, which includes: a transceiver module for receiving a reference signal from a network device, wherein the reference signal is used for beam measurement; a processing module for determining the resource with the strongest receiving energy for the reference signal; and the transceiver module for sending first information to the network device, wherein the first information is used to indicate index information corresponding to the resource with the strongest receiving energy for the reference signal.

[0009] According to the fifth aspect of an embodiment of the present disclosure, a network device is proposed, comprising: one or more processors; a memory coupled to the processor, the memory storing executable instructions, wherein the executable instructions, when executed by the processor, enable the terminal to execute the beam measurement method described in the first aspect above.

[0010] According to the sixth aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: one or more processors; a memory coupled to the processor, the memory storing executable instructions, wherein when the executable instructions are executed by the processor, the network device executes the beam measurement method described in the second aspect above.

[0011] According to the seventh aspect of an embodiment of the present disclosure, a communication system is proposed, including a terminal and a network device, wherein 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.

[0012] According to an eighth aspect of an embodiment of the present disclosure, a storage medium is proposed, wherein the storage medium stores instructions. When the instructions are executed on a communication device, the communication device executes the beam measurement method described in the first or second aspect above.

[0013] According to the embodiments of the present disclosure, the present application utilizes the beam squint phenomenon in high-frequency systems. During the beam measurement phase, the network device only needs to send a reference signal to the terminal once and receive index information from the terminal indicating the resource with the strongest energy for receiving the reference signal. Based on the index information, it can determine whether the terminal has moved and determine the current direction or angle of the terminal to quickly complete the beam measurement. It can be seen that the technical solution implemented by the present application does not require beam measurement of each beam in the beam candidate set in turn, which greatly reduces the beam measurement time and does not require the addition of a delay circuit network for precoding, reducing hardware costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0015] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0016] FIG2 is an interactive schematic diagram illustrating a beam measurement method according to an embodiment of the present disclosure.

[0017] FIG3A is a schematic flowchart showing a beam measurement method according to an embodiment of the present disclosure.

[0018] FIG3B is a schematic diagram showing beam squint according to an embodiment of the present disclosure;

[0019] FIG3C is a schematic diagram showing a resource unit according to an embodiment of the present disclosure;

[0020] FIG3D is a schematic diagram showing a resource unit group according to an embodiment of the present disclosure;

[0021] FIG3E is a schematic flowchart of a beam measurement method according to an embodiment of the present disclosure.

[0022] FIG4 is a schematic flowchart showing a beam measurement method according to an embodiment of the present disclosure.

[0023] FIG5 is a schematic block diagram showing the device structure of a terminal according to an embodiment of the present disclosure.

[0024] FIG6 is a schematic block diagram showing the apparatus structure of a network device according to an embodiment of the present disclosure.

[0025] FIG7 is a schematic structural diagram of a communication device proposed in an embodiment of the present disclosure.

[0026] FIG8 is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0027] Embodiments of the present disclosure provide a beam measurement method, a network device, a terminal, and a storage medium.

[0028] In the first aspect, an embodiment of the present disclosure proposes a beam measurement method, which is executed by a network device, and the method includes: sending a reference signal to a terminal, wherein the reference signal is used for beam measurement; receiving first information sent by the terminal, wherein the first information is used to indicate index information corresponding to the resource with the strongest energy for receiving the reference signal; and determining the direction or angle of the terminal based on the index information.

[0029] In the above embodiment, the beam squint phenomenon in high-frequency systems is utilized. During the beam measurement phase, the network device only needs to send a reference signal to the terminal once and receive index information from the terminal indicating the resource with the strongest reference signal reception energy. Based on this index information, the network device can then determine the terminal's current direction or angle, thereby rapidly completing beam measurement. As can be seen, the technical solution implemented in this application does not require rotating beam measurement for each beam in the candidate beam set, significantly reducing beam measurement time and eliminating the need for a delay circuit network for precoding, thereby reducing hardware costs.

[0030] In combination with some embodiments of the first 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 the subcarrier corresponding to the resource unit with the strongest reception energy among the resource units for receiving the reference signal by the terminal; and a subcarrier group index SGI, where the subcarrier group index is used to indicate the subcarrier group corresponding to the resource unit group with the strongest average reception energy among the resource unit groups for receiving the reference signal by the terminal.

[0031] In combination 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 receiving energy in the resource unit set; wherein the resource unit set is a subset of all resource units for the terminal to receive the reference signal.

[0032] In combination with some embodiments of the first aspect. In some embodiments, a 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; wherein the resource unit set is a subset of all resource units used by the terminal to receive the reference signal.

[0033] In combination 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 a first carrier frequency corresponding to the first subcarrier.

[0034] 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 based on the first subcarrier corresponding to the first carrier frequency and a center carrier frequency corresponding to the reference signal.

[0035] In combination with some embodiments of the first aspect. In some embodiments, determining the direction of the terminal based on the first carrier frequency corresponding to the first subcarrier and the center carrier frequency corresponding to the reference signal includes: determining the direction or angle of the terminal based on a ratio of the center carrier frequency to the first carrier frequency.

[0036] 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 using the following formula:

[0037] Wherein, θ represents the direction or angle of the analog beamforming used when sending the reference signal to the terminal, θ m The direction or angle of the terminal, f c represents the center carrier frequency corresponding to the reference signal, f m represents the carrier frequency corresponding to the m-th subcarrier, where the m-th subcarrier is the first subcarrier.

[0038] 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; and 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 array gain loss caused by beam squint.

[0039] In combination with some embodiments of the first aspect, in some embodiments, before sending a reference signal to the terminal, the method further includes: sending second information to the terminal, where the second information is used to instruct the terminal to send the first information.

[0040] 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.

[0041] In combination with some embodiments of the first aspect, in some embodiments, the method further comprises: sending the beam measurement configuration to the terminal.

[0042] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: sending a configuration of the index information to the terminal.

[0043] 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.

[0044] In combination with some embodiments of the first aspect, in some embodiments, the SI configuration includes at least one of the following: a resource unit set, the resource unit set being a subset of all resource units for the terminal to receive the reference signal; and a correspondence between each resource unit and an index number.

[0045] In combination with some embodiments of the first aspect, in some embodiments, the SGI configuration includes at least one of the following: resource unit groups; and a correspondence between each resource unit group and an index number.

[0046] In the second aspect, an embodiment of the present disclosure proposes a beam measurement method, which is executed by a terminal, and the method includes: receiving a reference signal from a network device, wherein the reference signal is used for beam measurement; determining the resource with the strongest energy for receiving the reference signal; and sending first information to the network device, wherein the first information is used to indicate index information corresponding to the resource with the strongest energy for receiving the reference signal.

[0047] In combination with some embodiments of 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 the subcarrier corresponding to the resource unit with the strongest reception energy among the resource units for receiving the reference signal by the terminal; and a subcarrier group index SGI, where the subcarrier group index is used to indicate the subcarrier group corresponding to the resource unit group with the strongest average reception energy among the resource unit groups for receiving the reference signal by the terminal.

[0048] In combination with some embodiments of the second aspect, in some embodiments, the subcarrier index SI is used to indicate the subcarrier corresponding to the resource unit with the strongest receiving energy in the resource unit set; wherein the resource unit set is a subset of all resource units for the terminal to receive the reference signal.

[0049] In combination with some embodiments of the second aspect. In some embodiments, a 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; wherein the resource unit set is a subset of all resource units used by the terminal to receive the reference signal.

[0050] In combination with some embodiments of 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 instruct the terminal to send the first information.

[0051] In combination with some embodiments of the second aspect, in some embodiments, the method further comprises: receiving a configuration of the reference signal from the network device.

[0052] In combination with some embodiments of the second aspect, in some embodiments, the method further comprises: receiving a configuration of the beam measurement from the network device.

[0053] In combination with some embodiments of the second aspect, in some embodiments, the method further includes: receiving configuration of the index information from the network device.

[0054] In the third aspect, a beam measurement device is proposed, which includes: a transceiver module for sending a reference signal to a terminal, wherein the reference signal is used for beam measurement; receiving first information sent by the terminal, wherein the first information is used to indicate index information corresponding to the resource with the strongest energy for receiving the reference signal; and a processing module for determining the direction or angle of the terminal based on the index information.

[0055] In the fourth aspect, a beam measurement device is proposed, which includes: a transceiver module for receiving a reference signal from a network device, wherein the reference signal is used for beam measurement; a processing module for determining the resource with the strongest receiving energy for the reference signal; and the transceiver module for sending first information to the network device, wherein the first information is used to indicate index information corresponding to the resource with the strongest receiving energy for the reference signal.

[0056] In the fifth aspect, a network device is proposed, comprising: one or more processors; a memory coupled to the processor, the memory storing executable instructions, wherein when the executable instructions are executed by the processor, the terminal executes the beam measurement method described in the first aspect and the optional embodiment of the first aspect.

[0057] In the sixth aspect, a terminal is proposed, comprising: one or more processors; a memory coupled to the processor, the memory storing executable instructions, wherein when the executable instructions are executed by the processor, the network device executes the beam measurement method described in the second aspect and the optional embodiment of the second aspect.

[0058] In the seventh aspect, an embodiment of the present disclosure proposes a communication device, which includes: 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 calls the executable instructions so that the communication device performs the beam measurement method described in the first and second aspects, and the optional embodiments of the first and second aspects.

[0059] In the eighth aspect, an embodiment of the present disclosure proposes a communication system, which includes: a terminal and a network device; wherein the terminal is configured to execute the method described in the second aspect and the optional embodiment of the second aspect, and the network device is configured to execute the method described in the first aspect and the optional embodiment of the first aspect.

[0060] In the ninth aspect, an embodiment of the present disclosure proposes a storage medium, which stores instructions. When the instructions are executed on a communication device, the communication device executes the method described in the first and second aspects, and the optional embodiments of the first and second aspects.

[0061] In a tenth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the first and second aspects, and the optional embodiments of the first and second aspects.

[0062] In an eleventh aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the methods described in the first and second aspects, and the optional embodiments of the first and second aspects.

[0063] It is understandable that the aforementioned network devices, terminals, communication devices, communication systems, storage media, program products, and computer programs 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 of the corresponding methods and will not be repeated here.

[0064] The present disclosure provides a beam measurement method, a network device, a terminal, and a storage medium. In some embodiments, the terms "information sending method," "information receiving method," "information processing method," and "communication method" are interchangeable; the terms "network device," "terminal," "information processing device," and "communication device" are interchangeable; and the terms "information processing system" and "communication system" are interchangeable.

[0065] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional embodiments in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional embodiments of other embodiments.

[0066] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0067] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0068] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular form, such as "a", "an", "the", "above", "said", "aforementioned", "this", etc., may mean "one and only one", or "one or more", "at least one", etc.

[0069] For example, when using articles such as “a”, “an”, and “the” in English in translation, the noun following the article can be understood as a singular expression or a plural expression.

[0070] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0071] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0072] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0073] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0074] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restrictions on the position, order, priority, quantity or content of the description objects. For the statement of the description objects, please refer to the description in the context of the claims or embodiments, and no unnecessary restrictions should be constituted due to the use of prefixes.

[0075] For example, if the description object is "field," the ordinal number preceding "field" in "first field" and "second field" does not restrict the position or order of the "fields." "First" and "second" do not restrict whether the modified "fields" are in the same message, nor do they restrict the order of the "first field" and "second field." For another example, if the description object is "level," the ordinal number preceding "level" in "first level" and "second level" does not restrict the priority of the "levels." For another example, the number of description objects is not restricted by the ordinal number and can be one or more. For example, in the case of "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the description object is "device," "first device" and "second device" can be the same or different devices, and their types can be the same or different. For another example, if the description object is "information," "first information" and "second information" can be the same or different information, and their content can be the same or different.

[0076] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0077] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0078] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0079] In some embodiments, devices and the like can be interpreted as physical or virtual, and their names are not limited to those in the embodiments.

[0080] The recorded names, "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject" and other terms can be used interchangeably.

[0081] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0082] In some embodiments, the terms "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)" and the like may be used interchangeably.

[0083] In some embodiments, the terms "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. can be used interchangeably.

[0084] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it is also possible to set the structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0085] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0086] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0087] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0088] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0089] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0090] As shown in FIG1 , a communication system 100 includes a terminal 101 and a network device 102 , wherein the network device includes at least one of the following: an access network device and a core network device.

[0091] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, 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 at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0092] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (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 base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0093] In some embodiments, a core network device may be a device including one or more network elements, or may be multiple devices or device groups, each including all or part of the one or more network elements. The network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0094] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0095] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0096] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0097] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto. The entities shown in FIG1 are illustrative only. The communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0098] The 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, 4th generation mobile communication system (4G), 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) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0099] FIG2 is an interactive schematic diagram illustrating a beam measurement method according to an embodiment of the present disclosure.

[0100] As shown in Figure 2, the beam measurement method includes:

[0101] In step S201 , the network device 102 sends a reference signal to the terminal 101 .

[0102] In some embodiments, the network device 102 sends a reference signal to the terminal 101 , where the reference signal is used for beam measurement.

[0103] In some embodiments, the terminal 101 receives a reference signal from the network device 102 , where the reference signal is used for beam measurement.

[0104] In some embodiments, before sending the reference signal to the terminal 101, the network device 102 may send second information to the terminal 101, where the second information is used to instruct the terminal to send the first information.

[0105] 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 .

[0106] In some embodiments, before sending a reference signal to the terminal 101 , the network device 102 may send a beam measurement configuration to the terminal 101 .

[0107] Step S201 : Terminal 101 sends first information to network device 102 .

[0108] In some embodiments, after receiving a reference signal from a network device 102, the terminal 101 can determine the resource with the strongest energy for receiving the reference signal; and send first information to the network device 102, where the first information is used to indicate index information corresponding to the resource with the strongest energy for receiving the reference signal.

[0109] In some embodiments, after sending a reference signal to the terminal 101, the network device 102 may receive first information sent by the terminal, where the first information is used to indicate index information corresponding to a resource with the strongest reference signal reception energy.

[0110] In some embodiments, the index information may include: a subcarrier index SI, where the subcarrier index is used to indicate a subcarrier corresponding to a resource unit with the strongest receiving energy among resource units used by the terminal to receive the reference signal.

[0111] In some embodiments, the subcarrier index SI is used to indicate the subcarrier corresponding to the resource unit with the strongest receiving energy in the resource unit set; wherein the resource unit set is a subset of all resource units for the terminal to receive the reference signal.

[0112] In some embodiments, the index information may include: a subcarrier group index SGI, where the subcarrier group index is used to indicate a subcarrier group corresponding to a resource element group having the strongest average receiving energy among the resource element groups for receiving the reference signal by the terminal.

[0113] 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 receiving 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 for the terminal to receive the reference signal.

[0114] In some embodiments, the index information may include the subcarrier index and the subcarrier group index.

[0115] In some embodiments, the network device 102 may send a configuration of the index information to the terminal.

[0116] In some embodiments, the configuration of the index information may include SI configuration and / or SGI configuration.

[0117] In some embodiments, the SI configuration includes at least one of the following: a resource unit set, where the resource unit set is a subset of all resource units used by the terminal to receive the reference signal; and a correspondence between each resource unit and an index number.

[0118] In some embodiments, the SGI configuration includes at least one of the following: a resource unit group; and a correspondence between each resource unit group and an index number.

[0119] In some embodiments, the terminal 101 may determine the resource with the strongest reference signal reception energy based on the configuration of beam measurement.

[0120] In some embodiments, the terminal 101 may determine, based on the configuration of the index information, the index information corresponding to the resource with the strongest energy for receiving the reference signal, and send the first information to the network device 102 .

[0121] Step S203: The network device 102 determines the direction or angle of the terminal based on the first information.

[0122] In some embodiments, the network device 102 may determine the direction or angle of the terminal based on index information indicated by the first information.

[0123] In some embodiments, the network device 102 may determine a first subcarrier based on the index information; and determine a direction or angle of the terminal based on the first subcarrier corresponding to a first carrier frequency.

[0124] 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 and a center carrier frequency corresponding to the reference signal.

[0125] In some embodiments, the network device 102 may determine the first subcarrier based on the index information; and determine the direction or angle of the terminal based on the ratio of the center carrier frequency to the first carrier frequency.

[0126] In some embodiments, the network device 102 may determine the first subcarrier based on the index information; and determine the direction or angle of the terminal using the following formula:

[0127] Wherein, θ represents the direction or angle of the analog beamforming used when sending the reference signal to the terminal, θ m The direction or angle of the terminal, f c represents the center carrier frequency corresponding to the reference signal, f m represents the carrier frequency corresponding to the m-th subcarrier, where the m-th subcarrier is the first subcarrier.

[0128] 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.

[0129] The communication method involved in the embodiments of the present disclosure may include at least one of steps S201 to S203. For example, step S201 can be implemented as an independent embodiment, step S202 can be implemented as an independent embodiment, step S203 can be implemented as an independent embodiment, any two of steps S201, S202, and S203 can be implemented as independent embodiments, and steps S201+S202+S203 can be implemented as independent embodiments, but are not limited thereto.

[0130] In some embodiments, steps S201 , S202 , and S203 may be performed in an interchangeable order or simultaneously.

[0131] In some embodiments, step S201 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0132] In some embodiments, step S202 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0133] In some embodiments, step S203 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0134] In some embodiments, reference may be made to other optional embodiments described before or after the description corresponding to FIG. 2 .

[0135] In some embodiments, with the continuous development of wireless communications, the requirements for communication capabilities are becoming increasingly higher. For future application scenarios such as augmented reality (AR) / virtual reality (VR), Internet of Vehicles, Internet of Things, holographic communication, and ultra-high-definition video transmission, ultra-high-speed, ultra-low latency, and ultra-large bandwidth communications will become the norm. The existing frequency range 1 (FR1) and frequency range 2 (FR2) have limited bandwidth and cannot support the above services. Therefore, higher frequency bands are required, such as sub-THz and THz. According to the electromagnetic wave spatial path loss model, the free space path loss of high frequencies is higher, and the same transmission power results in a shorter radiation distance. Therefore, large-scale MIMO beamforming is needed to solve the problem of short transmission distance.

[0136] The width of the beam is related to the size and frequency of the antenna array: the higher the frequency, the narrower the beam, and the larger the antenna array, the narrower the beam. This results in extremely narrow beams for high-frequency massive MIMO. Therefore, to cover the same cell, a high-frequency massive MIMO system requires more beams than a New Radio (NR) system. Furthermore, because high-frequency electromagnetic waves have poor reflection and diffraction properties, they can generally be considered to have only line-of-sight (LOS) coverage.

[0137] Taking terahertz as an example, due to the high frequency band of terahertz, if MIMO beamforming is used, its beam will become extremely narrow, and the coverage range and angle of a single beam will be very small. As the user moves, frequent beam switching is bound to occur, so frequent beam measurements are required in the beam tracking phase. The beam measurement method of related technologies is to measure the beams in the candidate beam set in sequence. It takes a long time to complete a round of measurement. Moreover, since the terminal is constantly moving, it is possible that the candidate beam set has not yet completed the measurement and the current working beam has become invalid. This will cause the terminal to believe that the beam has failed and it needs to re-initiate random access.

[0138] In some implementations, during beam measurement, cyclic delay diversity (CDD) precoding can be used to delay precoding different antenna ports using a delay device. This achieves the effect of superimposing different phases on different subcarriers in the frequency domain. This results in different beam directions formed by different subcarriers in the frequency domain, resulting in a wide beam state, which can significantly reduce the speed of beam measurement. However, since this method requires the addition of CDD precoding, it requires the addition of a delay circuit network to the hardware, increasing hardware costs. Furthermore, the precoding scheme is a closed-loop precoding scheme, requiring the terminal to feedback the precoding information, which increases the consumption of communication resources.

[0139] In a first aspect, embodiments of the present disclosure provide a beam measurement method. FIG3A is a schematic flow chart illustrating a beam measurement method according to an embodiment of the present disclosure. The beam measurement method illustrated in this embodiment can be executed by a network device.

[0140] As shown in FIG3A , the beam measurement method may include the following steps:

[0141] In step S301, a reference signal is sent to a terminal, where the reference signal is used for beam measurement.

[0142] In some embodiments, when performing beamforming measurement with a terminal, a network device may send a reference signal to the terminal. The reference signal is used for beamforming. The direction or angle of the simulated beamforming used by the network device when sending the reference signal to the terminal still uses the direction or angle of the terminal determined before beamforming, which may be referred to as the initial direction or angle in the following embodiments.

[0143] The reference signal may include at least one of the following: a channel state information reference signal (CSI-RS), a synchronization signal block (SSB), etc.

[0144] In step S302, first information sent by the terminal is received, where the first information is used to indicate index information corresponding to a resource with the strongest reference signal reception energy.

[0145] The resource with the strongest receiving energy may be a resource unit with the strongest receiving energy or a resource unit group with the strongest receiving energy.

[0146] It's important to note that in high-frequency systems, bandwidth is generally large. Due to the significant wavelength disparity between subcarriers, the same analog beamforming vector can cause beam squint. Similar to light dispersion, the beam deviates from the boresight (target direction) and spreads in other directions. Furthermore, the angle at which the beam deviates from the boresight varies with signal frequency. This phenomenon can cause a loss in antenna array gain at the transmitting end, transforming a narrow beam into a wide one.

[0147] As shown in FIG3B , when the network device sends a reference signal to the terminal, due to the beam squint phenomenon, at different carrier frequencies f l 、f c and f h The beam direction of the upper reference signal will shift.

[0148] In some embodiments, when measuring the beam, the terminal can receive a reference signal from the network device, where the reference signal is used for beam measurement, and calculate the strength of the received energy of the received reference signal in each resource unit to determine the resource unit with the strongest receiving energy, and the index information corresponding to the resource with the strongest receiving energy.

[0149] For example, as shown in FIG3B , if the terminal does not move, the resource unit with the strongest receiving energy is the center carrier frequency f of the reference signal. c The resource unit where the terminal is located; if the terminal moves downward, the resource unit with the strongest receiving energy may be f l The resource unit where the terminal is located; if the terminal moves upward, the resource unit with the strongest receiving energy may be the one with f h The resource unit.

[0150] In some embodiments, the network device may receive first information from the terminal, where the first information is used to indicate index information of a resource with the strongest reference signal reception energy. The first information may be referred to as auxiliary information for beam measurement.

[0151] In step S303, the direction or angle of the terminal is determined based on the index information.

[0152] In some embodiments, after receiving the first information from the terminal, the network device may calculate the current direction or angle of the terminal based on index information indicated by the first information. Furthermore, the network device may adjust the direction or angle of the analog beamforming based on the current direction or angle of the terminal to implement beam measurement and beam switching during terminal movement.

[0153] In some embodiments, after receiving first information from a terminal, the network device may determine whether the terminal has moved based on index information indicated by the first information. If so, the network device may calculate the terminal's offset or the terminal's current direction or angle based on the resource with the strongest reference signal reception energy indicated by the index information. Furthermore, the network device may adjust the direction or angle of analog beamforming based on the terminal's current direction or angle to implement beam measurement and beam switching during terminal movement.

[0154] It should be noted that the technical solutions of the embodiments of the present application are applicable to high-frequency massive MIMO communication systems, such as THz or sub-THz MIMO communication systems.

[0155] It should be noted that the embodiment shown in FIG. 3A can be implemented independently or in combination with at least one other embodiment in the present disclosure. The specific selection can be made as needed and the present disclosure does not limit it.

[0156] Based on the technical solutions of the above-mentioned embodiments, this application utilizes the beam squint phenomenon in high-frequency systems. During the beam measurement phase, the network device only needs to send a reference signal to the terminal once and receive index information from the terminal indicating the resource with the strongest reference signal reception energy. Based on the index information, the current direction or angle of the terminal can be determined to quickly complete the beam measurement. It can be seen that the technical solution implemented in this application does not require performing beam measurement on each beam in the beam candidate set in turn, greatly reducing the beam measurement time and eliminating the need to add a delay circuit network for precoding, thereby reducing hardware costs.

[0157] In some embodiments, before step S301, the network device may further send second information to the terminal, where 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 a reference signal reporting configuration sent by the network device to the terminal, for example, a channel state information reference signal reporting configuration (CSI-RS reporting configuration).

[0158] In some embodiments, the network device may send second information to the terminal, where the second information is used to instruct the terminal to report the first information to the network device when reporting CSI. After sending a reference signal for beam measurement to the terminal, the network device may receive first information from the terminal and determine the current direction or angle of the terminal based on index information corresponding to the resource with the strongest energy received by the reference signal indicated by the first information.

[0159] In some embodiments, the index information indicated by the first information may include at least one of the following: a sub-carrier index (SI), where the sub-carrier index is used to indicate the sub-carrier corresponding to the resource unit with the strongest receiving energy among the resource units for receiving the reference signal by the terminal; and a sub-carrier group index (SGI), where the sub-carrier group index is used to indicate the sub-carrier group corresponding to the resource unit group with the strongest average receiving energy among the resource unit groups for receiving the reference signal by the terminal.

[0160] In some embodiments, the index information indicated by the first information includes SI, and the SI can be used to indicate the subcarrier corresponding to the resource unit with the strongest receiving energy among all resource units in the entire bandwidth of the reference signal resource; or can be used to indicate the subcarrier corresponding to the resource unit with the highest receiving energy among some resource units in the reference signal resource. The some resources in the reference signal resource can be represented by a resource unit set, wherein the resource unit set is a subset of all resource units in the entire bandwidth of the reference signal resource.

[0161] In some embodiments, the network device may send an SI configuration to the terminal, and the SI configuration may be used to indicate a correspondence between each resource unit and an index number. Based on the SI configuration, the terminal may calculate the strength of the received energy of each resource unit when receiving a reference signal sent by the network device, thereby determining the resource unit with the strongest received energy, and reporting the SI to the network device through the first information. The SI may include the index number corresponding to the resource unit with the strongest received energy.

[0162] For example, the resources of the reference signal include M resource units {R#1, R#2, ..., R#M, R#M} over the entire bandwidth, and the SI configuration can configure an index number {SI=m, m=1,2, ...M} for each resource unit. When the terminal receives the reference signal sent by the network device, it can measure the strength of the received energy in all resource units based on the SI configuration, and determine the resource unit with the strongest received energy. If it is R#6, the index number 6 corresponding to RE#6 can be used as 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 subcarrier corresponding to the resource unit R#6.

[0163] In some embodiments, considering that the beam squint effect of adjacent subcarriers is not obvious, 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 the index number.

[0164] The method for determining the resource unit set may be set according to actual needs. For example, based on a preset interval, resource units are selected from all resource units on the entire bandwidth of the reference signal resources to form a resource unit set.

[0165] For example, as shown in FIG3C , the reference signal resources include M resource units {R#1, R#2, …, R#M-1, R#M} across the entire bandwidth. The SI configuration may indicate a resource unit set {R#1, R#5, R#9, …} consisting of some of the M resource units. Thus, one resource unit is taken every three resource units to form the resource unit set. The SI configuration may also configure an index number {SI=m, m=1, 2, …, M / 4} for each resource unit in the resource unit set. Upon receiving the reference signal sent by the network device, the terminal may measure the received energy strength of each resource unit in the resource unit set based on the SI configuration and determine the resource unit with the strongest received energy from the resource unit set. If it is R#5, the index number 2 corresponding to R#5 may be used as the SI and reported to the network device via the first information. The network device may determine that the resource unit 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 resource unit R#5.

[0166] In some embodiments, the SI may include one index number to indicate the subcarrier corresponding to a resource unit with the strongest received energy, or may include multiple index numbers to indicate the subcarriers corresponding to multiple resource units with the strongest received energy. The number of index numbers carried by the SI may also be indicated by the network device through SI configuration, or predefined by a protocol, etc.

[0167] In some embodiments, the index information indicated by the first information includes an SGI, and the 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 for receiving the reference signal by the terminal. Each resource element group can include multiple resource elements of the reference signal.

[0168] In some embodiments, the network device may send an SGI configuration to the terminal, where the SGI configuration may include all resource element groups used to indicate a reference signal, and a correspondence between each resource element group and an index number. When receiving the reference signal sent by the network device, the terminal may calculate the average received energy of each resource element group, determine the resource element group with the highest average received energy, and report the SGI to the network device via the first information, where the SGI may include the index number corresponding to the resource element group with the highest average received energy.

[0169] 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 four 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 may calculate the average received energy of each resource element group based on the SGI configuration and determine the resource element group with the highest 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 highest 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.

[0170] In some embodiments, each resource unit group of the SGI configuration may include a plurality of consecutive resource units, or may also include a plurality of disjoint resource units, for example, a plurality of equally spaced resource units.

[0171] In some embodiments, SGI can be used to indicate the subcarrier group corresponding to the resource unit group with the strongest average receiving 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 for the terminal to receive the reference signal.

[0172] The SGI configuration may be used to indicate the resource unit set; the resource unit groups divided based on the resource unit set; and the correspondence between each resource unit group and an index number.

[0173] For example, as shown in Figure 3D, the SGI configuration can indicate S resource unit groups {RG#1, RG#2, ..., RG#S-1, RG#S} of the reference signal, wherein each resource unit group can include 3 equally spaced resource units, wherein RG#1 includes {R#1, R#5, R#9}, RG#2 includes {R#13, R#17, R#21}, ... and so on. The SGI configuration can also configure an index number {SGI=n, n=1, 2, ..., S} for each resource unit group. When the terminal receives the reference signal sent by the network device, it can calculate the average received energy of each resource unit group based on the SGI configuration, and determine the resource unit 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 unit group with the strongest receiving energy is S#2 based on index number 2, and determine the direction or angle of the terminal based on the subcarrier corresponding to a certain RE in the resource unit {R#13, R#17, R#21} in the resource unit group S#2.

[0174] In some embodiments, the SGI may include one index number to indicate a subcarrier group corresponding to a resource element group with the strongest average received energy, or may include multiple index numbers to indicate 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 SI configuration, or may be predefined by a protocol.

[0175] In some embodiments, after receiving the first information from the terminal, the network device may determine a first subcarrier based on index information indicated by the first information, that is, use the first subcarrier as the subcarrier corresponding to the resource unit with the strongest reception energy for the terminal to receive the reference signal. The direction or angle of the terminal may then be determined based on a first carrier frequency corresponding to the first subcarrier and a center carrier frequency corresponding to the reference signal.

[0176] 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 can determine the resource unit corresponding to the index number based on the index number indicated by the SI, and use the subcarrier corresponding to the resource unit as the first subcarrier.

[0177] In some embodiments, if the index information indicated by the first information includes SGI, after the terminal receives the first information, the network device can determine the resource unit 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 the resource unit group.

[0178] There are various ways to select the first subcarrier from the subcarrier group. For example, the first subcarrier may be selected randomly or a subcarrier in the middle may be selected.

[0179] In some embodiments, after the network device determines the first subcarrier based on the index information, there may be various methods for determining the direction or angle of the terminal based on the first carrier frequency corresponding to the first subcarrier. For example, the direction or angle of the terminal may be calculated based on the ratio or difference between the center carrier frequency corresponding to the reference signal and the first carrier frequency.

[0180] In some embodiments, after determining the first subcarrier based on the index information, the network device may first determine whether it is necessary to re-determine the direction or angle of the terminal based on the first carrier frequency corresponding to the first subcarrier and the center carrier frequency corresponding to the reference signal. For example, if the difference between the center 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 re-determined, and the direction or angle of the terminal is calculated based on the ratio of the center carrier frequency to the first carrier frequency.

[0181] In one embodiment, the network device may use the following formula to calculate the direction or angle of the terminal:

[0182] Wherein, θ represents the direction or angle of the analog beamforming used when sending the reference signal to the terminal, θ m The direction or angle of the terminal, f c represents the center carrier frequency corresponding to the reference signal, f m represents the carrier frequency corresponding to the m-th subcarrier, where the m-th subcarrier is the first subcarrier.

[0183] 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 simulated 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 simulated beamforming.

[0184] 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 the analog beam forming. For example, if the difference between the direction or angle of the terminal and the direction or angle of the current analog beam forming reaches a preset angle threshold, the direction or angle of the analog beam forming is adjusted to calculate the 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 beam forming.

[0185] In some embodiments, the manner in which the network device adjusts the direction or angle of the 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.

[0186] 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.

[0187] Among them, the configuration of the reference signal can be used to indicate the resource of the reference signal, for example, it can be used to indicate the CSI-RS resource; the configuration of the beam measurement can be used to instruct the terminal to measure the strength of the received energy of the reference signal in each resource unit, and to determine the resource unit with the strongest received energy; the configuration of the index information can include SI configuration and / or SGI configuration.

[0188] In some embodiments, as shown in FIG3E , the beam measurement method proposed in the present application includes the following steps:

[0189] S311. The network device sends a related configuration for beam measurement and second information to the terminal; wherein the related configuration may include at least one of the following: a configuration of the reference signal; a configuration of the beam measurement; a configuration of the index information; and the second information is used to instruct the terminal to report the first information to the network device.

[0190] S312. The network device sends a reference signal to the terminal, where the reference signal is used for beam measurement.

[0191] S313. The terminal measures the strength of 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;

[0192] S314. The terminal sends first information to the network device, and the first information may indicate the index information corresponding to the resource with the strongest receiving energy for the reference signal; wherein the index information may include SI and / or SGI, the SI is used to indicate the subcarrier corresponding to the resource unit with the strongest receiving energy among the resource units for receiving the reference signal by the terminal, and the SGI is used to indicate the subcarrier group corresponding to the resource unit group with the strongest average receiving energy among the resource unit groups for receiving the reference signal by the terminal.

[0193] S315. The network device determines a first subcarrier based on the index information indicated by the first information.

[0194] 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 center carrier frequency corresponding to the reference signal.

[0195] S317. The network device determines compensation precoding information based on the direction or angle of the terminal;

[0196] S318: The network device uses the compensated 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.

[0197] In a second aspect, embodiments of the present disclosure provide a beam measurement method. Figure 4 is a schematic flow chart illustrating a beam measurement method according to an embodiment of the present disclosure. The beam measurement method illustrated in this embodiment can be executed by a network device.

[0198] As shown in FIG4 , the beam measurement method may include the following steps:

[0199] In step S401 , a reference signal is received from a network device, where the reference signal is used for beam measurement.

[0200] In some embodiments, when performing beamforming with a network device, a terminal may receive a reference signal from the network device for beamforming. The reference signal is used for beamforming. The direction or angle of simulated beamforming used by the network device when sending the reference signal to the terminal still uses the direction or angle of the terminal determined before beamforming, which may be referred to as the initial direction or angle in the following embodiments.

[0201] The reference signal may include at least one of the following: CSI-RS, SSB, etc.

[0202] In step S402, the resource with the strongest reference signal reception energy is determined.

[0203] In some embodiments, when performing beam measurement, the terminal can receive a reference signal from a network device, where the reference signal is used for beam measurement, and calculate the strength of the received energy of the received reference signal in each resource unit to determine the resource unit with the strongest receiving energy.

[0204] The resource with the strongest receiving energy may be a resource unit with the strongest receiving energy or a resource unit group with the strongest receiving energy.

[0205] In step S403, first information is sent to the network device, where the first information is used to indicate index information corresponding to the resource with the strongest reference signal reception energy.

[0206] In some embodiments, after determining the resource with the strongest reception energy, the terminal may determine index information corresponding to the resource with the strongest reception energy, and send first information to the network device based on the index information, where the first information is used to indicate the index information corresponding to the resource with the strongest reference signal reception energy, 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. The network device can then adjust the direction or angle of the analog beamforming based on the current direction or angle of the terminal to implement beam measurement and beam switching during the terminal's movement.

[0207] It should be noted that the technical solutions of the embodiments of the present application are applicable to high-frequency massive MIMO communication systems, such as THz or sub-THz MIMO communication systems.

[0208] It should be noted that the embodiment shown in FIG. 4 can be implemented independently or in combination with at least one other embodiment in the present disclosure. The specific selection can be made as needed and the present disclosure does not limit it.

[0209] According to the embodiments of the present disclosure, the present application utilizes the beam squint phenomenon in high-frequency systems. During the beam measurement phase, after receiving the reference signal sent by the network device, the terminal can determine the resource with the strongest reference signal reception energy and feedback index information indicating the resource with the strongest reference signal reception energy 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 the beam measurement. It can be seen that the technical solution implemented by the present application does not require beam measurement of each beam in the beam candidate set in turn, which greatly reduces the beam measurement time and does not require the addition of a delay circuit network for precoding, reducing hardware costs.

[0210] 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 a reference signal sent by the network device; determine the resource with the strongest energy for receiving the reference signal; and send first information to the network device, where the first information is used to indicate index information corresponding to the resource with the strongest energy for receiving the reference signal.

[0211] 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 the subcarrier corresponding to the resource unit with the strongest receiving energy among the resource units for receiving the reference signal by the terminal; a subcarrier group index SGI, where the subcarrier group index is used to indicate the subcarrier group corresponding to the resource unit group with the strongest average receiving energy among the resource unit groups for receiving the reference signal by the terminal.

[0212] In some embodiments, the index information indicated by the first information includes SI, and the SI can be used to indicate the subcarrier corresponding to the resource unit with the strongest receiving energy among all resource units in the entire bandwidth of the reference signal resource; or can be used to indicate the subcarrier corresponding to the resource unit with the highest receiving energy among some resource units in the reference signal resource. The some resources in the reference signal resource can be represented by a resource unit set, wherein the resource unit set is a subset of all resource units in the entire bandwidth of the reference signal resource.

[0213] In some embodiments, the terminal may receive an SI configuration from a network device, where the SI configuration may be used to indicate a correspondence between each resource unit and an index number. Based on the SI configuration, when receiving a reference signal sent by the network device, the terminal may calculate the strength of the received energy of each resource unit, determine the resource unit with the strongest received energy, and report the SI to the network device via the first information. The SI may include the index number corresponding to the resource unit with the strongest received energy.

[0214] In some embodiments, the SI configuration may be used to indicate a resource unit set and a correspondence between each resource unit in the resource unit set and an index number.

[0215] The method for determining the resource unit set may be set according to actual needs. For example, based on a preset interval, resource units are selected from all resource units on the entire bandwidth of the reference signal resources to form a resource unit set.

[0216] In some embodiments, the index information indicated by the first information includes an SGI, and the 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 for receiving the reference signal by the terminal. Each resource element group can include multiple resource elements of the reference signal.

[0217] In some embodiments, the terminal may send an SGI configuration to the network device, where the SGI configuration may include all resource element groups used to indicate a reference signal, and a correspondence between each resource element group and an index number. When receiving a reference signal sent by the network device, the terminal may calculate the average received energy of each resource element group, determine the resource element group with the highest average received energy, and report the SGI to the network device via the first information, where the SGI may include the index number corresponding to the resource element group with the highest average received energy.

[0218] In some embodiments, each resource unit group of the SGI configuration may include a plurality of consecutive resource units, or may also include a plurality of disjoint resource units, for example, a plurality of equally spaced resource units.

[0219] In some embodiments, SGI can be used to indicate the subcarrier group corresponding to the resource unit group with the strongest average receiving 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 for the terminal to receive the reference signal.

[0220] The SGI configuration may be used to indicate the resource unit set; the resource unit groups divided based on the resource unit set; and the correspondence between each resource unit group and an index number.

[0221] In some embodiments, after receiving the first information from the terminal, the network device may determine a first subcarrier based on index information indicated by the first information, that is, use the first subcarrier as the subcarrier corresponding to the resource unit with the strongest reception energy for the terminal to receive the reference signal. The direction or angle of the terminal may then be determined based on a first carrier frequency corresponding to the first subcarrier and a center carrier frequency corresponding to the reference signal.

[0222] 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 can determine the resource unit corresponding to the index number based on the index number indicated by the SI, and use the subcarrier corresponding to the resource unit as the first subcarrier.

[0223] In some embodiments, if the index information indicated by the first information includes SGI, after the terminal receives the first information, the network device can determine the resource unit 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 the resource unit group.

[0224] There are various ways to select the first subcarrier from the subcarrier group. For example, the first subcarrier may be selected randomly or a subcarrier in the middle may be selected.

[0225] In some embodiments, after the network device determines the first subcarrier based on the index information, there may be various methods for determining the direction or angle of the terminal based on the first carrier frequency corresponding to the first subcarrier. For example, the direction or angle of the terminal may be calculated based on the ratio or difference between the center carrier frequency corresponding to the reference signal and the first carrier frequency.

[0226] In some embodiments, after determining the first subcarrier based on the index information, the network device may first determine whether it is necessary to re-determine the direction or angle of the terminal based on the first carrier frequency corresponding to the first subcarrier and the center carrier frequency corresponding to the reference signal. For example, if the difference between the center 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 re-determined, and the direction or angle of the terminal is calculated based on the ratio of the center carrier frequency to the first carrier frequency.

[0227] In one embodiment, the network device may use the following formula to calculate the direction or angle of the terminal:

[0228] Wherein, θ represents the direction or angle of the analog beamforming used when sending the reference signal to the terminal, θ m The direction or angle of the terminal, f c represents the center carrier frequency corresponding to the reference signal, f m represents the carrier frequency corresponding to the m-th subcarrier, where the m-th subcarrier is the first subcarrier.

[0229] 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 simulated 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 simulated beamforming.

[0230] 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 the analog beam forming. For example, if the difference between the direction or angle of the terminal and the direction or angle of the current analog beam forming reaches a preset angle threshold, the direction or angle of the analog beam forming is adjusted to calculate the 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 beam forming.

[0231] In some embodiments, the manner in which the network device adjusts the direction or angle of the 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.

[0232] In some embodiments, before the terminal receives a reference signal from the network device, the terminal may also receive relevant configurations for beam measurement from the network device, including at least one of the following: configuration of the reference signal; configuration of the beam measurement; configuration of the index information.

[0233] In some embodiments, the configuration of the index information includes SI configuration and / or SGI configuration.

[0234] In some embodiments, the SI configuration includes at least one of the following: a resource unit set, where the resource unit set is a subset of all resource units used by the terminal to receive the reference signal; and a correspondence between each resource unit and an index number.

[0235] In some embodiments, the SGI configuration includes at least one of the following: a resource unit group; and a correspondence between each resource unit group and an index number.

[0236] Among them, the configuration of the reference signal can be used to indicate the resource of the reference signal; the configuration of the beam measurement can be used to instruct the terminal to measure the strength of the received energy of the reference signal in each resource unit, and to determine the resource unit with the strongest received energy; the configuration of the index information can include SI configuration and / or SGI configuration.

[0237] In some embodiments, the names of information, etc. 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", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0238] In some embodiments, terms such as "moment", "time point", "time", and "time position" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

[0239] In some embodiments, the terms "component carrier (CC)", "cell", "frequency carrier", "carrier frequency" and the like can be used interchangeably.

[0240] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0241] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0242] Corresponding to the aforementioned embodiments of the beam measurement method, the present disclosure also provides embodiments of a terminal and a network device.

[0243] An embodiment of the present disclosure also proposes a network device, comprising: one or more processors; a memory coupled to the processor, the memory storing executable instructions, wherein the executable instructions, when executed by the processor, enable the network device to execute the beam measurement method described in the above embodiment.

[0244] FIG5 is a schematic block diagram illustrating a device structure of a network device according to an embodiment of the present disclosure. As shown in FIG5 , the network device may be a beam measurement device, which includes a processing module 501 and a transceiver module 502 .

[0245] In some embodiments, the transceiver module 502 is used to send a reference signal to the terminal, and the reference signal is used for beam measurement; receive first information sent by the terminal, and the first information is used to indicate index information corresponding to the resource with the strongest energy for receiving the reference signal; the processing module 501 is used to determine the direction or angle of the terminal based on the index information.

[0246] 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 the subcarrier corresponding to the resource unit with the strongest receiving energy among the resource units for receiving the reference signal by the terminal; a subcarrier group index SGI, where the subcarrier group index is used to indicate the subcarrier group corresponding to the resource unit group with the strongest average receiving energy among the resource unit groups for receiving the reference signal by the terminal.

[0247] In some embodiments, the subcarrier index SI is used to indicate the subcarrier corresponding to the resource unit with the strongest receiving energy in the resource unit set; wherein the resource unit set is a subset of all resource units for the terminal to receive the reference signal.

[0248] 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 receiving 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 for the terminal to receive the reference signal.

[0249] In some embodiments, the processing module 501 is configured to determine a first subcarrier based on the index information; and determine a direction or angle of the terminal based on a first carrier frequency corresponding to the first subcarrier.

[0250] In some embodiments, the processing module 501 is configured to determine a first subcarrier based on the index information; and determine a 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.

[0251] 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.

[0252] In some embodiments, the processing module 501 is configured to determine the direction or angle of the terminal using the following formula:

[0253] Wherein, θ represents the direction or angle of the analog beamforming used when sending the reference signal to the terminal, θ m The direction or angle of the terminal, f c represents the center carrier frequency corresponding to the reference signal, f m represents the carrier frequency corresponding to the m-th subcarrier, where the m-th subcarrier is the first subcarrier.

[0254] In some embodiments, the processing module 501 is further used to determine compensation precoding information; use the compensation precoding information to adjust the direction or angle of the simulated beamforming to the direction or angle of the terminal, and eliminate the array gain loss caused by beam squint.

[0255] In some embodiments, the transceiver module 502 is further configured to send second information to the terminal, where the second information is configured to instruct the terminal to send the first information.

[0256] In some embodiments, the transceiver module 502 is further configured to send the configuration of the reference signal to the terminal.

[0257] In some embodiments, the transceiver module 502 is further configured to send the beam measurement configuration to the terminal.

[0258] In some embodiments, the transceiver module 502 is further configured to send a configuration of the index information to the terminal.

[0259] In some embodiments, the configuration of the index information includes SI configuration and / or SGI configuration.

[0260] In some embodiments, the SI configuration includes at least one of the following: a resource unit set, where the resource unit set is a subset of all resource units used by the terminal to receive the reference signal; and a correspondence between each resource unit and an index number.

[0261] In some embodiments, the SGI configuration includes at least one of the following: a resource unit group; and a correspondence between each resource unit group and an index number.

[0262] 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.

[0263] An embodiment of the present disclosure also proposes a terminal, comprising: one or more processors; a memory coupled to the processor, the memory storing executable instructions, wherein the executable instructions, when executed by the processor, enable the terminal to execute the beam measurement method described in the above embodiment.

[0264] FIG6 is a schematic block diagram of a terminal device structure according to an embodiment of the present disclosure. As shown in FIG6 , the terminal may be a beam measurement device, and the device includes a processing module 601 and a transceiver module 602 .

[0265] In some embodiments, the transceiver module 602 is used to receive a reference signal from a network device, and the reference signal is used for beam measurement; the processing module 601 is used to determine the resource with the strongest receiving energy for the reference signal; the transceiver module 602 is used to send first information to the network device, and the first information is used to indicate the index information corresponding to the resource with the strongest receiving energy for the reference signal.

[0266] 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 the subcarrier corresponding to the resource unit with the strongest receiving energy among the resource units for receiving the reference signal by the terminal; a subcarrier group index SGI, where the subcarrier group index is used to indicate the subcarrier group corresponding to the resource unit group with the strongest average receiving energy among the resource unit groups for receiving the reference signal by the terminal.

[0267] In some embodiments, the subcarrier index SI is used to indicate the subcarrier corresponding to the resource unit with the strongest receiving energy in the resource unit set; wherein the resource unit set is a subset of all resource units for the terminal to receive the reference signal.

[0268] 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 receiving 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 for the terminal to receive the reference signal.

[0269] In some embodiments, the transceiver module 602 is further configured to receive second information from the network device, where the second information is configured to instruct the terminal to send the first information.

[0270] In some embodiments, the transceiver module 602 is further configured to receive the configuration of the reference signal from the network device.

[0271] In some embodiments, the transceiver module 602 is further configured to receive the beam measurement configuration from the network device.

[0272] In some embodiments, the transceiver module 602 is further configured to receive the configuration of the index information from the network device.

[0273] In some embodiments, the configuration of the index information includes SI configuration and / or SGI configuration.

[0274] In some embodiments, the SI configuration includes at least one of the following: a resource unit set, where the resource unit set is a subset of all resource units used by the terminal to receive the reference signal; and a correspondence between each resource unit and an index number.

[0275] In some embodiments, the SGI configuration includes at least one of the following: resource unit groups; and a correspondence between each resource unit group and an index number.

[0276] It should be noted that the modules included in the terminal 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.

[0277] For the device embodiment, since it basically corresponds to the method embodiment, the relevant parts can be referred to the partial description of the method embodiment. The device embodiment described above is merely illustrative, wherein the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network modules. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art can understand and implement it without paying any creative work.

[0278] An embodiment of the present disclosure also proposes a communication device, comprising: one or more processors; a memory coupled to the processor, wherein the memory stores executable instructions, wherein when the executable instructions are executed by the processor, the processor calls the executable instructions so that the communication device executes the beam measurement method described in the above optional embodiment.

[0279] An embodiment of the present disclosure also proposes a communication system, including a terminal and a network device, wherein the terminal is configured to implement the beam measurement method described in the above optional embodiment, and the network device is configured to implement the beam measurement method described in the above optional embodiment.

[0280] An embodiment of the present disclosure further provides a storage medium storing instructions. When the instructions are executed on a communication device, the communication device executes the beam measurement method described in the above optional embodiment.

[0281] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0282] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may 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 the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein 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 within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized 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 by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0283] In the embodiments of the present disclosure, the 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). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. 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 and implementing the hardware circuit configuration 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 deep learning processing unit (DPU), etc.

[0284] Figure 7 is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure. Communication device 7100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 7100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0285] As shown in Figure 7, the communication device 7100 includes one or more processors 7101. The processor 7101 can be a general-purpose processor or a dedicated processor, for example, 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 the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. The processor 7101 is used to call instructions to enable the communication device 7100 to perform any of the above methods.

[0286] In some embodiments, the communication device 7100 further includes one or more memories 7102 for storing instructions. Optionally, all or part of the memories 7102 may be located outside the communication device 7100.

[0287] 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, the communication steps such as sending and receiving in the above method are performed by the transceiver 7103, and the other steps are performed by the processor 7101.

[0288] In some embodiments, a transceiver may include a receiver and a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0289] Optionally, the communication device 7100 further includes one or more interface circuits 7104, which are connected to the memory 7102. The interface circuits 7104 may be configured to receive signals from the memory 7102 or other devices, and may be configured to send signals to the memory 7102 or other devices. For example, the interface circuits 7104 may read instructions stored in the memory 7102 and send the instructions to the processor 7101.

[0290] The communication device 7100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7 . The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0291] FIG8 is a schematic diagram of the structure of a chip 8200 according to an embodiment of the present disclosure. If the communication device 7100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 8200 shown in FIG8 , but the present disclosure is not limited thereto.

[0292] The chip 8200 includes one or more processors 8201, and the processor 8201 is used to call instructions so that the chip 8200 executes any of the above methods.

[0293] In some embodiments, the chip 8200 further includes one or more interface circuits 8202, which are connected to the memory 8203. The interface circuit 8202 can be used to receive signals from the memory 8203 or other devices, and can be used to send signals to the memory.

[0294] 8203 or other devices to send signals. For example, the interface circuit 8202 can read the instructions stored in the memory 8203 and send the instructions to the processor 8201. Optionally, the terms interface circuit, interface, transceiver pin, transceiver, etc. can be used interchangeably.

[0295] In some embodiments, the chip 8200 further includes one or more memories 8203 for storing instructions. Alternatively, all or part of the memories 8203 may be outside the chip 8200.

[0296] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 7100, the communication device 7100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.

[0297] The present disclosure also provides a program product, which, when executed by the communication device 7100, enables the communication device 7100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0298] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one 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, wherein 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 set of resource elements; wherein, the set of resource elements 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 set of resource elements; wherein, the set of resource elements 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, wherein 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 a 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: Determine the orientation 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 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 the 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. The method according to 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 described in 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 described in 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 set of resource elements, the set of resource elements being a subset of all resource elements where the terminal receives the reference signal; A correspondence between each resource element and an index number.

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

17. A beam measurement method, characterized in that, Executed by a 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 element with the strongest received energy in the resource elements 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 element group with the strongest average received energy in the resource element groups where the terminal receives the reference signal.

19. The method according to claim 18, wherein The subcarrier index SI is used to indicate the subcarrier corresponding to the resource element with the strongest received energy in the resource element set; wherein, the resource element set is a subset of all the resource elements 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 element group with the strongest average received energy in the resource element groups divided based on the resource element set; wherein, the resource element set is a subset of all the resource elements 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, and executable instructions are stored on the memory, wherein 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, and executable instructions are stored on the memory, wherein 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, Includes: One or more processors; A memory coupled to the processor, wherein executable instructions are stored on the memory, and when the executable instructions are executed by the processor, the processor is configured to call instructions to cause the communication device to perform 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 instructions run on the communication device, the communication device is caused to perform 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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