Beam tracking method and apparatus, and storage medium and program product

Abstract

A beam tracking method and apparatus, and a storage medium and a program product. The method comprises: acquiring signal measurement information, wherein the signal measurement information comprises communication signal measurement information and sensing signal measurement information between a first node and a second node; and on the basis of the signal measurement information, determining a beam tracking usage policy of the first node for the second node, wherein the beam tracking usage policy is used for indicating the enabling or disabling of beam tracking.

Description

Beam tracking methods, devices, storage media, and software products

[0001] This disclosure claims priority to Chinese patent application No. 202411668508.9, filed on November 20, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of communication technology, and in particular to a beam tracking method, apparatus, storage medium, and program product. Background Technology

[0003] With the evolution and development of sensing integration technology, the industry's focus has shifted from the initial stage of service coexistence to a more integrated stage of capability collaboration. System optimization design no longer considers only the performance indicators of communication or sensing alone, but requires the simultaneous operation of communication and sensing systems. Sensing integration systems no longer provide sensing services in isolation, but rather use sensing services to promote and improve the system's communication quality. Here, for cooperative terminals with communication capabilities, especially fast-moving drone terminals, how to improve communication quality through beam tracking using sensing-assisted communication is a key technology that must be researched and implemented in sensing integration systems. It is also an urgent need for the large-scale application of sensing integration in the era of 5G-A or future 6G mobile communication networks. Summary of the Invention

[0004] On the one hand, a beam tracking method is provided, applied to the first node, the method comprising:

[0005] Acquire signal measurement information, which includes communication signal measurement information and sensing signal measurement information between the second node;

[0006] Based on signal measurement information, a beam tracking strategy for the second node is determined. The beam tracking strategy is used to indicate whether beam tracking is enabled or disabled.

[0007] On the other hand, a beam tracking method is provided for application to a second node, the method comprising:

[0008] The first instruction information sent by the first node is received. The first instruction information is used to instruct the first node to start beam tracking of the second node. The first instruction information is determined by the first node based on signal measurement information, which includes communication signal measurement information and sensing signal measurement information.

[0009] On another front, a beam tracking device is provided for use at a first node, the device comprising:

[0010] The communication module is used to acquire signal measurement information, which includes communication signal measurement information with the second node and sensing signal measurement information.

[0011] The processing module is used to determine the beam tracking usage strategy for the second node based on signal measurement information. The beam tracking usage strategy is used to indicate whether beam tracking is turned on or off.

[0012] On another front, a beam tracking device is provided for use at a second node, the device comprising:

[0013] The communication module is used to receive first indication information sent by the first node. The first indication information is used to instruct the first node to start beam tracking of the second node. The first indication information is determined by the first node based on signal measurement information, which includes communication signal measurement information and sensing signal measurement information.

[0014] In another aspect, a communication device is provided, comprising: a memory and a processor; the memory and the processor are coupled; the memory is used to store computer program instructions executable by the processor; and the processor implements the beam tracking method of any of the above embodiments when executing the computer program instructions.

[0015] In another aspect, a computer-readable storage medium is provided, on which computer program instructions are stored, which, when executed on a computer (e.g., a communication device or a beam tracking device), implement the beam tracking method of any of the above embodiments.

[0016] In another aspect, a computer program product is provided, which includes computer program instructions that, when executed, implement the beam tracking method of any of the above embodiments.

[0017] The technical solution provided in this disclosure acquires signal measurement information, including communication signal measurement information and sensing signal measurement information between the second node and the second node. Based on the signal measurement information, a beam tracking strategy for the second node is determined, which indicates whether beam tracking is enabled or disabled. By combining the communication signal measurement information and the sensing signal measurement information, a beam tracking strategy for the second node is determined, making full use of sensing information to assist the communication process and improving the real-time performance and robustness of beam tracking. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are merely drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings.

[0019] Figure 1 is a schematic diagram of the architecture of a communication system according to some embodiments.

[0020] Figure 2 is a flowchart of a beam tracking method according to some embodiments.

[0021] Figure 3 is a schematic diagram of an application scenario of the beam tracking method according to some embodiments.

[0022] Figure 4 is a schematic diagram of another application scenario of the beam tracking method according to some embodiments.

[0023] Figure 5 is a schematic diagram of another application scenario of the beam tracking method according to some embodiments.

[0024] Figure 6 is a flowchart of another beam tracking method according to some embodiments.

[0025] Figure 7 is a flowchart of another beam tracking method according to some embodiments.

[0026] Figure 8 is a block diagram of a beam tracking device according to some embodiments.

[0027] Figure 9 is a block diagram of another beam tracking device according to some embodiments.

[0028] Figure 10 is a block diagram of a communication device according to some embodiments. Detailed Implementation

[0029] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.

[0030] In this disclosure, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, "at least one" means one or more, and "multiple" means two or more. The terms "first," "second," etc., do not limit the quantity or order of execution, and "first," "second," etc., do not necessarily imply differences.

[0031] It should be noted that in this disclosure, the words "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in this disclosure should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0032] As a key technology in the 5G-A / 6th generation mobile communication technology phase, sensor-communication integration is receiving increasing attention from academia, industry, and standardization organizations, and has already yielded numerous research results. Sensor-communication integration combines communication, sensing, and computing capabilities, ensuring communication services while endowing base stations with sensing and detection capabilities. This enables low-cost, blind-spot-free, and all-weather sensing of low-altitude flying objects, road vehicles, and water vessels. In the low-altitude economy, drone delivery and drone inspection are gradually becoming high-commercial-value application scenarios with industry consensus, and related companies are already establishing pilot sites and actively exploring large-scale commercial applications. After upgrading existing network base stations with sensor-communication integration, they can achieve both continuous communication and continuous sensing of mobile terminals.

[0033] In low-altitude scenarios, drone terminals move at high speeds, and the time they spend within the same communication beam coverage area of ​​a base station is significantly reduced compared to traditional terrestrial communication scenarios. When a drone terminal is at the edge of the beam coverage area, the gain is greatly reduced compared to when it is at the center. Therefore, to ensure communication quality, the communication beam pair between the base station and the drone terminal needs to be switched. However, the high speed of the drone terminal causes frequent beam switching. Frequent beam switching leads to frequent measurements and feedback, as well as frequent reconfiguration of communication parameters, resulting in severe fluctuations in data transmission traffic and potentially causing communication link failures.

[0034] With the evolution and development of sensing integration technology, the industry's focus has shifted from the initial stage of service coexistence to a more integrated stage of capability collaboration. System optimization design no longer considers only the performance indicators of communication or sensing alone, but requires the simultaneous operation of communication and sensing systems. Sensing integration systems no longer provide sensing services in isolation, but rather use sensing services to promote and improve the system's communication quality. Here, for cooperative terminals with communication capabilities, especially fast-moving drone terminals, how to improve communication quality through beam tracking using sensing-assisted communication is a key technology that must be researched and implemented in sensing integration systems, and it is also an urgent need for the large-scale application of sensing integration in the era of 5G-A or sixth-generation mobile communication technologies.

[0035] In view of this, this disclosure provides a beam tracking method that acquires signal measurement information, including communication signal measurement information and sensing signal measurement information between the second node and the second node; based on the signal measurement information, a beam tracking usage strategy for the second node is determined, which is used to indicate whether beam tracking is enabled or disabled. By combining the communication signal measurement information and the sensing signal measurement information, the beam tracking usage strategy for the second node is determined, making full use of sensing information to assist the communication process and improving the real-time performance and robustness of beam tracking.

[0036] The beam tracking method provided in this disclosure can be applied to systems with various communication standards. For example, the systems to which the beam tracking method provided in this disclosure is applicable include, but are not limited to, long-term evolution (LTE) systems, various versions of LTE evolution, 5th generation (5G) communication systems, wireless fidelity (Wi-Fi) systems, 3GPP-related communication systems, ambient internet of things (Ambient IoT) systems, or systems integrating multiple systems. In addition, the beam tracking method provided in this disclosure can also be applied to future-oriented communication systems (such as 6th generation (6G) communication systems), etc., and this disclosure does not limit this application.

[0037] The network architecture of the mobile communication network (including but not limited to existing and future mobile communication networks) in this disclosure embodiment may include at least a first communication node and a second communication node. It should be understood that, in this example, in the downlink, the first communication node may be a network-side device (e.g., including but not limited to a base station), and the second communication node may be a terminal-side device (e.g., including but not limited to a terminal). Of course, in the uplink, the first communication node may also be a terminal-side device, and the second communication node may also be a network-side device. In device-to-device communication between the two communication nodes, both the first and second communication nodes can be a base station or a terminal. The first and second communication nodes may be referred to as the first node and the second node, respectively.

[0038] For example, taking a first node as a base station and a second node as a terminal, Figure 1 shows a schematic diagram of the architecture of a communication system according to some embodiments. The communication system includes a terminal 10 and a base station 20. There can be one or more terminals 10 and base stations 20, and the number is not limited.

[0039] Here, terminal 10 is communicatively connected to base station 20. The terminal can be a terminal-side device (e.g., including but not limited to a terminal), an IoT device, etc., and the base station can be a network-side device (e.g., including but not limited to a base station), an access network device, etc.

[0040] Base station 20 is used to acquire signal measurement information, including communication signal measurement information and sensing signal measurement information between the base station and the second node; based on the signal measurement information, it determines the beam tracking usage strategy for the second node, and the beam tracking usage strategy is used to indicate whether beam tracking is turned on or off.

[0041] In some embodiments, base station 20 has both communication and sensing functions, and can be called a sensing base station. The sensing base station communicates with and senses cooperative terminals, performing communication and sensing signal processing. However, in actual deployment, it is also possible that the base station only has communication functions, while simultaneously being equipped with camera equipment. The camera equipment transmits environmental video information to the base station, which can then obtain information such as the terminal's position, speed, and angle based on the video information. Thus, the base station performs beam tracking for communication based on the video sensing information.

[0042] In some embodiments, base station 20 may be a macro base station in a cellular network, or a distributed unit access node, a base station or evolved Node B (eNB or eNodeB) in LTE, Long Term Evolution Advanced (LTEA), a base station device in a 5G network, or a base station in a future communication system, etc. The base station may include various macro base stations, micro base stations, femtobase stations, wireless remote extensions, reconfigurable intelligent surfaces (RISs), routers, relays, transmit / receive points (TRPs), wireless fidelity (WIFI) devices, user equipment (UE), and other network-side devices. This disclosure does not limit this aspect.

[0043] Terminal 10 is used to receive first indication information sent by the first node. The first indication information is used to instruct the first node to start beam tracking of the second node. The first indication information is determined by the first node based on signal measurement information, which includes communication signal measurement information and sensing signal measurement information.

[0044] In some embodiments, terminal 10 can be a device with wireless transceiver capabilities, i.e., a terminal with communication functions. Terminals can be passive devices, ambient IoT devices, mobile phones, drones, vehicles, pedestrians, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminals, augmented reality (AR) terminals, wireless terminals in industrial control, self-driving, remote medical care, smart grids, transportation safety, smart cities, smart homes, etc. The embodiments of this disclosure do not limit the application scenarios. Terminals may also be referred to as users, cooperative terminals, mobile terminals, UEs, access terminals, UE units, UE stations, mobile stations, mobile stations, remote stations, remote terminals, mobile devices, UE terminals, wireless communication devices, UE agents, or UE devices, etc., and the embodiments of this disclosure do not limit these terms.

[0045] It should be noted that Figure 1 is only an exemplary framework diagram. The number of devices included in Figure 1 and the names of each device are not limited. In addition to the devices shown in Figure 1, the communication system may also include other devices, such as core network devices.

[0046] The application scenarios of the embodiments disclosed herein are not limited. The system architecture and business scenarios described in the embodiments of this disclosure are for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of this disclosure. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this disclosure are also applicable to similar technical problems.

[0047] This disclosure provides a beam tracking method applied to a first node. As shown in Figure 2, the method includes the following steps:

[0048] S101, The first node acquires signal measurement information, which includes communication signal measurement information and sensing signal measurement information between the first node and the second node.

[0049] In some embodiments, the communication signal measurement information includes: the signal-to-noise ratio (SNR) of the communication signal and / or the number of data transmission decoding errors between the first node and the second node regarding the communication signal.

[0050] The sensing signal measurement information includes at least one of the following: the signal-to-noise ratio of the sensing signal, the characteristic correlation between the movement distance and speed of the second node, the position information of the second node, the speed information of the second node, or the angle information of the second node.

[0051] In some embodiments, the first node acquires communication signal measurement information, including: the first node receiving communication signal measurement information obtained by the second node from the communication signal (e.g., downlink signal) transmitted on the communication beam between the first node and the second node; or, the first node obtains communication signal measurement information from the communication signal (e.g., uplink signal) transmitted on the communication beam between the first node and the second node.

[0052] For example, taking the first node as a base station and the second node as a terminal, before the base station acquires signal measurement information, during the initial network access phase of the terminal, the transmission configuration information (including beam selection and transmission parameter configuration) is implemented based on measurement and feedback, including the following steps:

[0053] Step 1-1: The terminal establishes a communication connection with the base station to access the network. The base station associates and unifies the terminal's communication identity with its perceived identity through communication information exchange and sensing information matching.

[0054] Steps 1-2 involve a beam scanning process between the base station and the terminal, as shown in Figure 3(a). Both the base station and the terminal perform multiple beam scans, and the terminal sends beam measurement reports for each beam pair back to the base station. Based on the beam measurement reports from the terminal, the base station selects the communication beam for data transmission, as shown in Figure 3(b). The base station sends a channel measurement signal to the terminal based on the selected communication beam. The terminal receives the channel measurement signal, performs channel measurement, and sends channel state information (CSI) back to the base station. The base station determines the transmission strategy with the terminal based on the CSI. The transmission strategy includes at least a modulation and coding scheme (MCS) and a rank transmission strategy (e.g., MCS = 20 and Rank Indicator (RI) = 2), and simultaneously instructs the terminal to perform data transmission.

[0055] S102. The first node determines the beam tracking strategy for the second node based on signal measurement information.

[0056] Here, the beam tracking usage strategy is used to indicate whether beam tracking is turned on or off.

[0057] Understandably, current research in sensing technology proposes that, for terminal communication scenarios, base stations can adaptively adjust communication beams based on angle information obtained through sensing. The base station determines whether a link is line-of-sight (LAS) or non-LAS based on the sensing results of the terminal's movement trajectory, and initiates beam tracking when it is determined to be a LAS. However, in actual communication, purely LAS channels are rare, and making a binary judgment of LAS or non-LAS is difficult to be accurate. Whether beam tracking can be performed, or whether beam tracking can achieve good results, essentially depends on whether the channel state between the base station and the terminal remains stable, requiring a combination of communication signal measurement information and sensing signal measurement information for judgment. Therefore, this solution also proposes the following steps to address these issues.

[0058] In some embodiments, the first node determines a beam tracking usage strategy for the second node based on signal measurement information, including: determining whether the signal measurement information meets channel stability conditions; if the signal measurement information meets channel stability conditions, determining that the beam tracking usage strategy is to enable beam tracking; or if the signal measurement information does not meet channel stability conditions, determining that the beam tracking usage strategy is to disable beam tracking.

[0059] In some embodiments, channel stability conditions include at least one of the following:

[0060] The signal-to-noise ratio of the current communication signal is greater than the first threshold;

[0061] During the transmission of M communication signals, the number of data transmission decoding errors between the first node and the second node is less than the second threshold.

[0062] The signal-to-noise ratio of the sensed signal is greater than the third threshold within the current coherent processing time interval;

[0063] The average signal-to-noise ratio of the sensed signal within the most recent N consecutive coherent processing time intervals is greater than the fourth threshold;

[0064] The absolute value of the difference between the signal-to-noise ratio (SNR) of the sensed signal in the current coherent processing time interval and the average SNR of the sensed signal in the most recent L coherent processing time intervals is less than the fifth threshold; or,

[0065] The feature correlation between the velocity of the second node and the moving distance of the second node in the most recent N consecutive coherent processing time intervals is greater than the sixth threshold. The feature correlation is used to characterize the stability or reliability of the moving trajectory of the second node obtained by the first node through processing the sensing signal.

[0066] It is understandable that the coherent processing time interval can be called a snapshot, which is an instantaneous recording or capture of the signal-to-noise ratio of the sensed signal and / or the velocity and position of the second node at a certain point in time or within a certain time period.

[0067] In some embodiments, the feature correlation is determined based on the position and velocity information of the second node in each of the N consecutive coherent processing time intervals.

[0068] For example, the characteristic correlation between the velocity of the second node and the travel distance of the second node within the most recent N consecutive coherent processing time intervals is determined by the following formula:

[0069] Here, δ represents the feature correlation, which can be defined as a real number in the range [0, 1], where 0 represents the least correlated and 1 represents the most correlated. N represents the trajectory of the perceived target (second node) formed by N consecutive coherent processing time intervals sensed by the base station. Each coherent processing time interval has its corresponding coordinates and features (position and velocity, etc.) of the perceived target (second node). Δsn represents the spatial distance moved by the perceived target (second node) in the nth coherent processing time interval compared to the previous coherent processing time interval. vn represents the flight speed of the perceived target (second node) in the nth coherent processing time interval. Δt represents the time interval between two adjacent coherent processing time intervals. As shown in the above formula, the more correlated the sensing feature parameters are (the higher the feature correlation), the more stable the channel state between the first node and the second node, or the higher the reliability of the movement trajectory sensed by the first node from the second node.

[0070] The rationale for setting the above channel stability conditions is that during data transmission, the first node can obtain the SNR of the communication signal. Generally speaking, a higher SNR of the communication signal corresponds to a higher transmission rate and better channel quality. In this case, beam tracking is relatively feasible and yields higher benefits.

[0071] If the number of data transmission decoding errors between the first node and the second node is less than the second threshold during the transmission of M communication signals, it can be considered that the channel fluctuation is small and the channel state is relatively stable.

[0072] The coverage areas of the communication and sensing signals at the first node are basically the same in design, and the generation and transmission methods of the sensing signals are also similar to those of the communication signals. Therefore, the SNR of the sensing signals and the SNR of the communication signals also show consistent trends, and the SNR of the sensing signals will maintain a relatively high value. If the average SNR of the sensing signals over the most recent N consecutive coherent processing time intervals is greater than the fourth threshold, it indicates that the channel quality is high and stable. If the absolute value of the difference between the SNR of the sensing signals in the current coherent processing time interval and the average SNR of the sensing signals over the most recent N coherent processing time intervals is less than the fifth threshold, whether the SNR gradually decreases (e.g., the drone terminal moves away from the base station) or gradually increases (e.g., the drone terminal moves closer to the base station), it indicates that the channel state is stable.

[0073] The characteristic correlation between the velocity of the second node and the moving distance of the second node within the most recent N consecutive coherent processing time intervals is greater than the sixth threshold. This represents the stability of the channel state from the perspective of the correlation between the physical meaning of the perceived features.

[0074] In some embodiments, after determining that the beam tracking strategy is enabled, the first node sends a first indication message to the second node, which instructs that beam tracking of the second node be enabled. This allows the second node to promptly learn that the first node has enabled beam tracking of the second node.

[0075] Understandably, different transmission configuration information requires different configuration and adjustment methods during beam tracking. Therefore, this solution also provides the following steps to address this issue.

[0076] In some embodiments, during the beam tracking process of the second node, the first node updates the acquired signal measurement information to obtain updated signal measurement information; based on the updated signal measurement information, it adjusts the transmission configuration information to obtain adjusted transmission configuration information; the transmission configuration information includes beam configuration information and transmission strategy between the first node and the second node, and the transmission strategy includes at least a modulation and coding strategy and a rank transmission strategy.

[0077] In some embodiments, beam configuration information includes the beam direction and / or beam width.

[0078] In some embodiments, the beam configuration information includes the beam direction. Based on the updated signal measurement information, the transmission configuration information is adjusted, including: adjusting the beam direction based on the angle information of the second node so that the communication beam direction points to the terminal.

[0079] In some embodiments, the beam configuration information includes the beam width. The first node adjusts the transmission configuration information based on updated signal measurement information, including: the first node adjusting the beam width based on the position information and / or velocity information of the second node. Here, the velocity information of the second node includes the tangential angular velocity of the line connecting the first and second nodes.

[0080] In some embodiments, the tangential angular velocity and the beamwidth are positively correlated.

[0081] In some embodiments, the first node adjusts the beamwidth based on the position information and / or velocity information of the second node, including:

[0082] The first node determines its distance from the second node based on the location information of the second node;

[0083] The first node adjusts the beamwidth based on distance; here, distance and beamwidth are negatively correlated.

[0084] For example, taking the first node as a base station and the second node as a terminal, the base station adjusts the width of the communication beam in real time based on the terminal's location and velocity information. If the terminal is close to the base station, the base station can use a wide beam; if the terminal is far from the base station, the base station can use a narrow beam. If the tangential angular velocity of the line connecting the terminal and the base station is high, the base station can use a wide beam; if the tangential angular velocity of the line connecting the terminal and the base station is low, the base station can use a narrow beam. Here, considering location characteristics: for nearby terminals, signal spatial transmission loss is low, and the terminal cannot be approximated as a point target, so the base station can use a wide beam; while for distant terminals, signal spatial transmission loss is high, and the terminal can generally be approximated as a point target, so the base station can use a narrow beam. Considering velocity characteristics: the base station can obtain the tangential angular velocity of the line connecting the terminal and the base station based on sensing information, and can select an appropriate beam width so that the target is always within the effective coverage range of the beam, such as within half the beam's power width. For terminals with high tangential angular velocity, base stations can use wide beams; while for terminals with low tangential angular velocity, base stations can use narrow beams.

[0085] In some embodiments, the level of modulation and coding strategy is positively correlated with the signal-to-noise ratio (SNR) of the sensed signal and / or the SNR of the communication signal.

[0086] For example, taking the first node as the base station and the second node as the terminal, for the parameter MCS, during beam tracking, the base station adaptively adjusts it based on signal measurement information. For instance, the higher the SNR of the communication signal and the SNR of the sensing signal, the higher the MCS level; the lower the SNR of the communication signal and the SNR of the sensing signal, the lower the MCS level. A higher number of correct decoding results from the terminal increases the MCS level, while a higher number of incorrect results decreases it. It is understandable that for a transmission parameter like MCS, which is primarily related to channel quality, adaptive adjustment can be made comprehensively based on the SNR of the communication signal, the SNR of the sensing signal, the average SNR of the sensing signal over the most recent N consecutive coherent processing time intervals, and the decoding result indications from the terminal.

[0087] In some embodiments, the rank indicator remains unchanged during beam tracking of the second node. That is, it is consistent with the value determined by the first node based on the channel state information fed back by the second node. It is understood that for transmission parameters such as RI, which are mainly related to the channel matrix condition number, the overall channel state is considered to be stable, and therefore remains unchanged during beam tracking.

[0088] Understandably, in related technologies, traditional base stations and terminals perform beam switching via beam scanning and measurement reports. However, this approach suffers from two drawbacks: first, the overall latency of the switching process is high, as the terminal's location may have changed significantly within the network after the switch, potentially altering the real-time optimal beam from the optimal beam reported in the measurement report; second, after beam switching, the base station and terminal only have reference signal receiving power (RSRP) information for the new beam pair, without CSI measurement. Therefore, data transmission after beam switching typically employs conservative scheduling, such as low MCS and RI, until CSI measurement and feedback are completed, at which point a suitable channel transmission strategy is configured, resulting in significant fluctuations in data transmission traffic. In contrast, this proposed solution updates the signal measurement information acquired between the base station and the terminal during beam tracking. Based on this updated information, different adaptive adjustment strategies are employed for different transmission configuration information (including beam configuration information and transmission strategies (MCS and RI)), effectively improving the accuracy and stability of communication transmission.

[0089] Furthermore, current industry research largely focuses on beam tracking at the base station side, while in actual communication, beam tracking involves beam pairs between the communicating parties. Therefore, in addition to adaptive beam adjustment at the base station side, the beam at the terminal side also needs to be adjusted accordingly during the beam tracking process. Therefore, this solution also provides the following steps to address these issues.

[0090] In some embodiments, the first node sends adjustment information to the second node, the adjustment information including adjusted transmission configuration information and the location information of the first node.

[0091] In some embodiments, the adjustment information further includes position information and / or velocity information obtained by the first node sensing and measuring the second node.

[0092] In this way, during beam tracking, the base station sends adjustment information to the terminal, and the terminal can also make adaptive beam adjustments based on the adjustment information, thus realizing the beam tracking process between the two communicating parties based on beam matching.

[0093] For example, referring to Figure 4, taking the first node as a base station and the second node as a terminal, when the terminal moves from position 1 to position 2 in the sensor network, the base station activates beam tracking, adaptively adjusts the beam configuration information and transmission strategy based on signal measurement information, and sends the corresponding information and instructions to the terminal. This includes the following steps:

[0094] Step 2-1: The base station obtains a communication signal SNR of 20dB through the communication link. During 20 communication signal transmissions, the terminal reports one decoding error. The base station obtains a sensing signal SNR of 14dB within the current coherent processing time interval through the sensing link. The average SNR of the sensing signal within the most recent 10 consecutive coherent processing time intervals is 15dB. The characteristic correlation between the terminal's speed and travel distance within the most recent 10 consecutive coherent processing time intervals is 0.95. The stability of the channel state is determined by a combination of the following six events, i.e., all of which must be simultaneously satisfied:

[0095] (1) The SNR of the current communication signal is greater than 10dB;

[0096] (2) During the transmission of 20 communication signals, the number of times the terminal feedback decoding result error was less than 2;

[0097] (3) The SNR of the sensed signal is greater than 10dB within the current coherent processing time interval;

[0098] (4) The average SNR of the sensed signal is greater than 10dB in the most recent 10 consecutive coherent processing time intervals;

[0099] (5) The difference between the SNR of the sensed signal in the current coherent processing time interval and the average SNR of the sensed signal in the most recent 10 coherent processing time intervals is less than 3dB.

[0100] (6) The characteristic correlation between the terminal’s speed and travel distance is greater than 0.8 within the most recent 10 consecutive coherent processing time intervals.

[0101] As can be seen from the above six events, the channel state between the base station and the terminal meets the stability condition, so the base station starts beam tracking of the terminal.

[0102] Step 2-2: The base station sends a beam tracking activation command (first indication information) to the terminal. The base station updates the acquired signal measurement information to obtain updated signal measurement information; based on the updated signal measurement information, the transmission configuration information is adjusted, as described in the above embodiments or examples, and will not be repeated here. For example, as shown in Figure 4, the base station adjusts the direction of the communication beam in real time based on the terminal's angle information, so that the communication beam direction points to the terminal. Based on the terminal's position and speed information, the base station uses a narrow beam because the terminal is far from the base station and has a low speed. The base station maintains the transmission parameter RI = 2, and considers that the difference between the SNR of the sensed signal in the current coherent processing time interval and the average SNR of the sensed signal in the most recent 10 coherent processing time intervals is -1dB, so the MCS is appropriately reduced and configured as MCS = 18.

[0103] Steps 2-3: The base station sends adaptively adjusted beam center angle, main lobe width, base station coordinates, and / or terminal coordinates and terminal movement speed to the terminal. Here, the base station's beam center angle, main lobe width, and coordinates are necessary information, while the terminal coordinates and movement speed are optional or can be considered supplementary information. In actual communication, beam tracking involves the beam pairs of both communicating parties. Therefore, in the beam tracking process, in addition to the adaptive beam adjustment on the base station side, the terminal side's beam also needs to be adjusted accordingly. Based on the relevant information transmitted by the base station and the information it can obtain, the terminal can adaptively adjust its beam direction and beam width accordingly. Based on the base station's beam center angle and coordinates, and assuming the base station beam is pointing towards the terminal, the terminal can obtain the directional angle of the base station relative to the terminal. Therefore, the terminal can adjust the beam direction based on this directional angle to make the beam point towards the base station. Based on the main lobe width of the base station's beam, the terminal can adaptively adjust its own beamwidth. If the base station uses a narrow beam, the terminal can also use a narrow beam to improve performance; if the base station uses a wide beam, the terminal can also use a wide beam to improve robustness. Furthermore, if the terminal obtains its own position coordinates and speed, it can adjust its beam direction and beamwidth more precisely. If the terminal is equipped with devices such as a Global Positioning System (GPS) and inertial measurement units, it can obtain its own position coordinates and speed information. As shown in Figure 4, the terminal adjusts its beam direction to point towards the base station based on the relevant information transmitted by the base station.

[0104] In some embodiments, during beam tracking of the second node, the first node updates the acquired signal measurement information to obtain updated signal measurement information; determines whether the updated signal measurement information satisfies the channel instability condition; if the updated signal measurement information satisfies the channel instability condition, determines to disable beam tracking of the second node. If the updated signal measurement information does not satisfy the channel instability condition, determines to maintain the beam tracking strategy for the second node unchanged.

[0105] In some embodiments, channel instability conditions include at least one of the following:

[0106] The signal-to-noise ratio of the current communication signal is less than the seventh threshold;

[0107] During the transmission of P communication signals, the number of data transmission decoding errors between the first node and the second node regarding the communication signals exceeds the eighth threshold.

[0108] The signal-to-noise ratio of the sensed signal is less than the ninth threshold within the current coherent processing time interval;

[0109] The average signal-to-noise ratio of the sensed signal within the most recent K consecutive coherent processing time intervals is less than the tenth threshold;

[0110] The absolute value of the difference between the signal-to-noise ratio (SNR) of the sensed signal in the current coherent processing time interval and the average SNR of the sensed signal in the most recent Q coherent processing time intervals is greater than the eleventh threshold; or,

[0111] The characteristic correlation between the velocity of the second node and the movement distance of the second node within the most recent K consecutive coherent processing time intervals is less than the twelfth threshold.

[0112] The reason for setting the above channel instability conditions is that during data transmission, the first node can obtain the SNR of the communication signal. Generally speaking, a lower communication signal SNR corresponds to a lower transmission rate and a poorer channel quality. At this time, beam tracking is relatively less feasible and the benefits are also lower.

[0113] If the number of data transmission decoding errors between the first node and the second node exceeds the eighth threshold during the transmission of P communication signals, it can be considered that the channel is experiencing significant fluctuations and the channel state is unstable.

[0114] The coverage areas of the communication and sensing signals at the first node are basically the same in design, and the generation and transmission methods of the sensing signals are also similar to those of the communication signals. Therefore, the SNR of the sensing signals and the SNR of the communication signals also show the same trend, and the SNR of the sensing signals will be relatively low. If the average SNR of the sensing signals in the most recent K consecutive coherent processing time intervals is less than the tenth threshold, it indicates that the channel quality is low and unstable.

[0115] If the absolute value of the difference between the signal-to-noise ratio (SNR) of the sensed signal in the current coherent processing time interval and the average SNR of the sensed signal in the most recent Q coherent processing time intervals is greater than the eleventh threshold, it indicates that the channel state has lost stability, whether the SNR gradually decreases (e.g., the drone terminal moves away from the base station) or the SNR gradually increases (e.g., the drone terminal moves closer to the base station).

[0116] The correlation between the velocity and the moving distance of the second node within the most recent K consecutive coherent processing time intervals is less than the twelfth threshold. This indicates that the channel state has become unstable, based on the physical correlation between perceived features. Based on this event, it can be determined that the channel state between the first and second nodes has become unstable. This could be due to factors such as numerous obstacles in the environment, the presence of highly variable reflectors, or an unstable flight trajectory of the second node. Therefore, it can be decided to disable beam tracking for the second node.

[0117] In some embodiments, after disabling beam tracking of the second node, the first node sends a second indication message to the second node. This second indication message indicates that beam tracking of the second node has been disabled, so that the second node can be promptly notified that the first node has stopped beam tracking it.

[0118] In some embodiments, after disabling beam tracking of the second node, the first node performs a beam scanning process; the first node receives a beam measurement report sent by the second node in response to the beam scanning process; the first node determines beam configuration information with the second node based on the beam measurement report.

[0119] In some embodiments, the first node sends a channel measurement signal to the second node based on beam configuration information; the first node receives channel state information from the second node in response to the channel measurement signal; the first node determines a transmission strategy with the second node based on the channel state information, the transmission strategy including at least a modulation and coding strategy (including MCS level) and a rank transmission strategy (including RI); the first node sends the beam configuration information and the transmission strategy to the second node.

[0120] For example, referring to Figure 5, when a terminal moves from position 2 to position 3 in the sensor network and enters an urban canyon environment, the channel between the base station and the terminal becomes a non-line-of-sight link due to building obstruction and wall reflections. This increases channel fluctuations and significantly reduces both communication and sensing performance. The method provided in this solution may include the following steps:

[0121] Step 3-1: The base station updates the communication signal's SNR to 8dB via the communication link. During 20 communication signal transmissions, the terminal reported 8 decoding errors. The base station obtains the SNR of the sensed signal within the current coherent processing time interval to be 5dB via the sensing link, and the average SNR of the sensed signal within the most recent 10 consecutive coherent processing time intervals is 6dB. The conditions for determining whether the channel state has become unstable are considered in combination of the following four events, i.e., all of which must be simultaneously satisfied:

[0122] (1) The SNR of the current communication signal is less than 10dB;

[0123] (2) During the transmission of 20 communication signals, the terminal returned more than 3 errors in the decoding result;

[0124] (3) The SNR of the sensed signal is less than 10dB within the current coherent processing time interval;

[0125] (4) The average SNR of the sensed signal is less than 10dB in the most recent 10 consecutive coherent processing time intervals.

[0126] As can be seen from the above four events, the channel state between the base station and the terminal becomes unstable, so the base station disables beam tracking for the terminal.

[0127] Step 3-2: The base station sends the instruction to disable beam tracking (second instruction information) to the terminal.

[0128] Step 3-3: Communication between the base station and the terminal adopts a measurement- and feedback-based transmission strategy. This involves a beam scanning process between the base station and the terminal, with multiple beams scanning on both sides. The terminal feeds back the measurement results of these multiple beam pairs to the base station. Based on the beam measurement results fed back by the terminal, the base station selects the communication beam for data transmission. The base station sends a channel measurement signal to the terminal based on the selected communication beam. The terminal receives the channel measurement signal, performs channel measurement, and feeds back the channel state information to the base station. The base station determines transmission configuration information such as MCS and RI (e.g., MCS=5 and RI=1), and simultaneously informs the terminal via instructions to initiate data transmission.

[0129] Based on this, the base station integrates measurement information from both communication and sensing signals to determine whether the channel state between the base station and the terminal has reached stability, and accordingly decides whether to implement a beam-tracking-based communication transmission strategy. During beam tracking, the base station adaptively adjusts its transmission configuration information; simultaneously, the base station transmits the corresponding adjusted transmission configuration information to the terminal, enabling the terminal to also adaptively adjust its beam. This achieves a beam-tracking data transmission method for sensing-assisted communication, improving the real-time performance and robustness of beam tracking. Especially in scenarios where the terminal moves rapidly, it can effectively improve the accuracy and stability of communication transmission.

[0130] For example, taking the first node as a base station and the second node as a terminal, Figure 6 is a flowchart of another beam tracking method provided by some sources. As shown in Figure 6, the method includes the following steps:

[0131] S201. The terminal establishes a communication connection with the base station to access the network. The base station associates and unifies the terminal's communication identity with its perceived identity through communication information interaction and perception information matching with the terminal.

[0132] S202. During the beam scanning process, the base station receives the beam measurement report sent by the terminal in response to the beam scanning process. Based on the beam measurement report, the base station determines the beam configuration information between itself and the terminal. The base station sends a channel measurement signal to the terminal based on the beam configuration information. The base station receives channel state information from the terminal in response to the channel measurement signal. Based on the channel state information, the base station determines the transmission strategy between itself and the terminal, which includes at least a modulation and coding strategy and a rank transmission strategy; the base station sends the beam configuration information and the transmission strategy to the terminal. Simultaneously, it informs the terminal through instructions and performs data transmission.

[0133] S203. The base station acquires signal measurement information and determines whether the signal measurement information meets the channel stability conditions. Other relevant details regarding this step can be found in the above embodiments or examples and will not be repeated here.

[0134] In step S203, if the signal measurement information does not meet the channel stability conditions, the base station determines that the beam tracking strategy for the terminal is to disable (or not enable) beam tracking. The communication between the base station and the terminal is maintained based on the measurement and feedback transmission strategy, which is to return to the strategy in step S202.

[0135] In step S203, if the signal measurement information meets the channel stability condition, step S204 is executed, that is, the base station determines that the beam tracking strategy for the terminal is to enable beam tracking. The base station may send a first indication message to the terminal, which is used to indicate that beam tracking for the terminal is enabled.

[0136] The base station can update the signal measurement information acquired between itself and the terminal, obtaining updated signal measurement information. Based on the updated signal measurement information, it adjusts the transmission configuration information. For example, it can obtain information such as the SNR of the communication signal and the terminal decoding result feedback through the communication link, and can also obtain information such as the SNR of the sensed signal, the terminal's position, the terminal's speed, and the terminal's angle through the sensing link. The base station adaptively adjusts the beam pointing and width, as well as the transmission parameters, based on the signal measurement information, and sends the corresponding information and instructions to the terminal, so that the terminal can adaptively adjust its own beam pointing and beam width according to the relevant information transmitted by the base station and the information it can obtain. For details, please refer to the relevant descriptions in the above embodiments or examples, which will not be repeated here.

[0137] S205. During beam tracking, the base station updates the acquired signal measurement information to obtain updated signal measurement information; it then determines whether the updated signal measurement information meets the channel instability condition. Other relevant details regarding this step can be found in the above embodiments or examples and will not be repeated here.

[0138] In step S205, if the updated signal measurement information does not meet the channel instability condition, beam tracking of the terminal is maintained, and the communication between the base station and the terminal maintains the adaptive transmission strategy, that is, the strategy of step S204 is returned.

[0139] In step S205, if the updated signal measurement information meets the channel instability condition, step S206 is executed, that is, the base station determines that the beam tracking strategy used for the terminal is to disable beam tracking, and the base station sends the instruction to disable beam tracking (second indication information) to the terminal. The communication between the base station and the terminal adopts a transmission strategy based on measurement and feedback, that is, the strategy of returning to step S202.

[0140] For other related content in the steps of Figure 6, please refer to the relevant descriptions in other embodiments or examples, which will not be repeated here.

[0141] This disclosure provides a beam tracking method applied to a second node. As shown in Figure 7, the method includes the following steps:

[0142] S301. Receive first indication information sent by the first node. The first indication information is used to instruct the first node to start beam tracking of the second node. The first indication information is determined by the first node based on signal measurement information, which includes communication signal measurement information and sensing signal measurement information.

[0143] In some embodiments, the communication signal measurement information includes: the signal-to-noise ratio of the communication signal and / or the number of data transmission decoding errors between the first node and the second node regarding the communication signal.

[0144] The sensing signal measurement information includes at least one of the following: the signal-to-noise ratio of the sensing signal, the characteristic correlation between the movement distance and speed of the second node, the position information of the second node, the speed information of the second node, or the angle information of the second node.

[0145] In some embodiments, the system receives adjustment information sent by the first node. The adjustment information includes adjusted transmission configuration information and the location information of the first node. The transmission configuration information includes beam configuration information and transmission strategy between the first node and the second node. The transmission strategy includes at least a modulation and coding strategy and a rank transmission strategy. Based on the adjustment information, the system adjusts the beam configuration information of the second node.

[0146] In some embodiments, the adjustment information further includes position information and / or velocity information obtained by the first node sensing and measuring the second node.

[0147] For example, taking the first node as a base station and the second node as a terminal, the terminal can adaptively adjust its beam pointing and beamwidth based on the relevant information transmitted by the base station and the information it can obtain. Based on the base station's beam center angle and coordinates, and assuming the base station's beam is pointing towards the terminal, the terminal can obtain the directional angle of the base station relative to itself. Therefore, the terminal can adjust its beam direction based on this directional angle to ensure the beam points towards the base station. Furthermore, based on the main lobe width of the base station's beam, the terminal can adaptively adjust its beamwidth. If the base station uses a narrow beam, the terminal can also use a narrow beam to improve performance; if the base station uses a wide beam, the terminal can also use a wide beam to improve robustness. Simultaneously, if the terminal obtains its own position coordinates and speed, it can adjust its beam pointing and beamwidth more precisely and accurately. If the terminal is equipped with a Global Positioning System (GPS) and an inertial measurement unit, it can obtain its own position coordinates and speed information.

[0148] In some embodiments, a second indication message is received from a first node, the second indication message being used to instruct the first node to disable beam tracking of the second node.

[0149] In some embodiments, a beam measurement report is sent to the first node in response to the beam scanning process.

[0150] In some embodiments, the system receives and measures the channel measurement signal transmitted by the first node based on beam configuration information to obtain channel state information, wherein the beam configuration information is determined based on the beam measurement report; the system transmits the channel state information to the first node; and the system receives the beam configuration information and transmission strategy transmitted by the first node, wherein the transmission strategy includes at least a modulation and coding strategy (including MCS level) and a rank transmission strategy (including RI).

[0151] For details regarding other steps in Figure 7, please refer to the relevant descriptions in other embodiments or examples, which will not be repeated here.

[0152] Understandably, beam tracking for mobile terminals in sensory networks can also be achieved without using sensing-assisted communication. Instead, the base station can predict channel information based on uplink measurement signals sent by the terminal, thereby performing beam tracking. That is, the terminal sends uplink measurement signals, and the base station can estimate the channel state and terminal characteristics based on these signals, such as the angle of arrival of the terminal signal and whether the channel is line-of-sight or non-line-of-sight. The base station adjusts the direction of its beam in real time by estimating and predicting the angle information. Simultaneously, based on the determination of whether the channel is line-of-sight or non-line-of-sight, it decides whether to enable or disable beam tracking.

[0153] The foregoing primarily describes the solutions of the embodiments of this disclosure from a methodological perspective. A beam tracking device is also illustrated below for executing the beam tracking method in any of the above embodiments and their possible implementations. It is understood that, in order to implement the beam tracking method, the beam tracking device includes hardware structures and / or software modules corresponding to the execution of various functions; those skilled in the art should readily recognize that, in conjunction with the algorithm steps of the examples described in the embodiments of this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0154] This disclosure embodiment can divide the beam tracking device into functional modules according to the above method embodiment. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one functional module. The integrated module can be implemented in hardware or software. It should be noted that the module division in this disclosure embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. The following description uses the example of dividing each functional module according to each function.

[0155] Figure 8 is a block diagram of a beam tracking device according to some embodiments, applied to a first node. The beam tracking device 400 includes a communication module 401 and a processing module 402.

[0156] Here, the communication module 401 is used to acquire signal measurement information, which includes communication signal measurement information and sensing signal measurement information between the second node and the second node.

[0157] The processing module 402 is used to determine the beam tracking usage strategy for the second node based on the signal measurement information. The beam tracking usage strategy is used to indicate whether beam tracking is turned on or off.

[0158] In some embodiments, the processing module 402 is specifically used for:

[0159] Determine whether the signal measurement information meets the channel stability conditions;

[0160] If the signal measurement information meets the channel stability conditions, the beam tracking strategy is determined to be enabled; or...

[0161] If the signal measurement information does not meet the channel stability conditions, the beam tracking strategy is determined to be to disable beam tracking.

[0162] In some embodiments, the communication signal measurement information includes: the signal-to-noise ratio of the communication signal and / or the number of data transmission decoding errors between the first node and the second node regarding the communication signal; the sensing signal measurement information includes at least one of the following: the signal-to-noise ratio of the sensing signal, the characteristic correlation between the moving distance and speed of the second node, the position information of the second node, the speed information of the second node, or the angle information of the second node.

[0163] In some embodiments, the communication module 401 is configured to send a first indication message to the second node after determining that the beam tracking usage strategy is to enable beam tracking. The first indication message is used to indicate that beam tracking of the second node is enabled.

[0164] In some embodiments, the communication module 401 is used to update the acquired signal measurement information during beam tracking of the second node to obtain updated signal measurement information; the processing module 402 is used to adjust the transmission configuration information based on the updated signal measurement information to obtain adjusted transmission configuration information; the transmission configuration information includes beam configuration information and transmission strategy between the second node and the second node, and the transmission strategy includes at least a modulation and coding strategy and a rank transmission strategy.

[0165] In some embodiments, beam configuration information includes the beam direction and / or beam width.

[0166] In some embodiments, the beam configuration information includes the beam direction, and the processing module 402 is used to: adjust the beam direction based on the angle information of the second node.

[0167] In some embodiments, the beam configuration information includes the beam width, and the processing module 402 is used for:

[0168] The beamwidth is adjusted based on the position and / or velocity information of the second node. Here, the velocity information of the second node includes the tangential angular velocity of the line connecting the first and second nodes.

[0169] In some embodiments, the tangential angular velocity and the beamwidth are positively correlated.

[0170] In some embodiments, the processing module 402 is specifically used for:

[0171] Determine the distance to the second node based on the location information of the second node;

[0172] The beamwidth is adjusted based on the distance. Here, distance and beamwidth are negatively correlated.

[0173] In some embodiments, the level of modulation and coding strategy is positively correlated with the signal-to-noise ratio (SNR) of the sensed signal and / or the SNR of the communication signal.

[0174] In some embodiments, the rank indication remains unchanged during beam tracking of the second node.

[0175] In some embodiments, adjustment information is sent to the second node, which includes adjusted transmission configuration information and the location information of the first node.

[0176] In some embodiments, the adjustment information further includes position information and / or velocity information obtained by the first node sensing and measuring the second node.

[0177] In some embodiments, the communication module 401 is used to update the acquired signal measurement information during the beam tracking of the second node, and obtain the updated signal measurement information.

[0178] Processing module 402 is used to determine whether the updated signal measurement information meets the channel instability condition;

[0179] The processing module 402 is also configured to determine to disable beam tracking of the second node if the updated signal measurement information meets the channel instability condition.

[0180] In some embodiments, the communication module 401 is configured to send a second indication message to the second node after beam tracking of the second node is turned off, the second indication message being used to indicate that beam tracking of the second node is turned off.

[0181] In some embodiments, the processing module 402 is configured to perform a beam scanning process after beam tracking of the second node is turned off; the communication module 401 is configured to receive a beam measurement report sent by the second node in response to the beam scanning process; the processing module 402 is further configured to determine beam configuration information between itself and the second node based on the beam measurement report.

[0182] In some embodiments, the communication module 401 is configured to send a channel measurement signal to the second node based on beam configuration information; the communication module 401 is also configured to receive channel state information from the second node in response to the channel measurement signal; the processing module 402 is also configured to determine a transmission strategy with the second node based on the channel state information, the transmission strategy including at least a modulation and coding strategy and a rank transmission strategy; the communication module 401 is also configured to send the beam configuration information and the transmission strategy to the second node.

[0183] For a more detailed description of the communication module 401 and the processing module 402, as well as a more detailed description of their respective technical features and beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0184] Figure 9 is a block diagram of another beam tracking device according to some embodiments, applied to a second node. The beam tracking device 500 includes a communication module 501 and a processing module 502.

[0185] Here, the communication module 501 is used to receive first indication information sent by the first node. The first indication information is used to instruct the first node to start beam tracking of the second node. The first indication information is determined by the first node based on signal measurement information, which includes communication signal measurement information and sensing signal measurement information.

[0186] In some embodiments, the communication module 501 is configured to receive adjustment information sent by the first node. The adjustment information includes adjusted transmission configuration information and the location information of the first node. The transmission configuration information includes beam configuration information and transmission strategy between the first node and the second node. The transmission strategy includes at least a modulation and coding strategy and a rank transmission strategy.

[0187] The processing module 502 is used to adjust the beam configuration information of the second node based on the adjustment information.

[0188] In some embodiments, the adjustment information further includes position information and / or velocity information obtained by the first node sensing and measuring the second node.

[0189] In some embodiments, the communication module 501 is configured to receive second indication information sent by the first node, the second indication information being used to instruct the first node to disable beam tracking of the second node.

[0190] In some embodiments, the communication module 501 is configured to send a beam measurement report to the first node in response to the beam scanning process.

[0191] In some embodiments, the communication module 501 is specifically used for:

[0192] The channel measurement signal sent by the first node based on the beam configuration information is received and measured to obtain the channel state information. The beam configuration information is determined based on the beam measurement report.

[0193] Send channel status information to the first node;

[0194] Receive beam configuration information and transmission strategy sent by the first node. The transmission strategy includes at least a modulation and coding strategy and a rank transmission strategy.

[0195] For a more detailed description of the communication module 501 and the processing module 502, as well as a more detailed description of their respective technical features and beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0196] It should be noted that the modules in Figures 8 and 9 can also be called units; for example, a communication module can be called a communication unit. Furthermore, in the embodiments shown in Figures 8 and 9, the names of the modules may not be those shown in the figures; for example, a communication module could also be called a transmitting module or a receiving module.

[0197] If the various units or modules in Figures 8 and 9 are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this disclosure, or the parts that contribute to related technologies, or all or part of the technical solutions, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of this disclosure. Storage media for storing computer software products include various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0198] In the case of implementing the functions of the integrated modules described above in hardware, embodiments of this disclosure also provide a possible structure for a communication device used to execute the beam tracking method provided in embodiments of this disclosure. As shown in FIG10, the communication device 600 includes: a communication interface 603, a processor 602, and a bus 604. In some embodiments, the communication device may further include a memory 601.

[0199] Processor 602 may implement or execute various exemplary logic blocks, modules, and circuits described in connection with embodiments of this disclosure. Processor 602 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in connection with embodiments of this disclosure. Processor 602 may also be a combination that implements computing functions, such as including one or more microprocessor combinations, a combination of a digital signal processor (DSP) and a microprocessor, etc.

[0200] Communication interface 603 is used to connect to other devices via a communication network. This communication network can be Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0201] The memory 601 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), disk storage medium or other magnetic storage device, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0202] In some embodiments, the memory 601 may exist independently of the processor 602. The memory 601 may be connected to the processor 602 via a bus 604 and may be used to store instructions or program code. When the processor 602 calls and executes the instructions or program code stored in the memory 601, it can implement the beam tracking method provided in the embodiments of this disclosure.

[0203] In other embodiments, memory 601 may also be integrated with processor 602.

[0204] Bus 604 can be an extended industry standard architecture (EISA) bus, etc. Bus 604 can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in Figure 10, but this does not mean that there is only one bus or one type of bus.

[0205] Some embodiments of this disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium) storing computer program instructions that, when executed on a computer, cause the computer to perform the beam tracking method as described in any of the above embodiments.

[0206] In one exemplary embodiment, the computer may be the beam tracking device described above, and this disclosure does not limit the specific form of the computer.

[0207] In some examples, the aforementioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROMs), cards, sticks, or key drives, etc.). The various computer-readable storage media described in this disclosure may represent one or more devices for storing information and / or other machine-readable storage media. The term "machine-readable storage media" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0208] This disclosure provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the beam tracking method described in any of the above embodiments.

[0209] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A beam tracking method, wherein, Applied to the first node, the method includes: Acquire signal measurement information, which includes communication signal measurement information and sensing signal measurement information between the second node; Based on the signal measurement information, a beam tracking strategy for the second node is determined, which is used to indicate whether beam tracking is enabled or disabled.

2. The method according to claim 1, wherein, The step of determining the beam tracking strategy for the second node based on the signal measurement information includes: Determine whether the signal measurement information meets the channel stability conditions; If the signal measurement information satisfies the channel stability condition, the beam tracking strategy is determined to be enabled; or, If the signal measurement information does not meet the channel stability condition, the beam tracking strategy is determined to be beam tracking disabled.

3. The method according to claim 2, wherein, The communication signal measurement information includes: the signal-to-noise ratio of the communication signal and / or the number of data transmission decoding errors between the first node and the second node regarding the communication signal; The sensing signal measurement information includes at least one of the following: the signal-to-noise ratio of the sensing signal, the characteristic correlation between the movement distance and speed of the second node, the position information of the second node, the speed information of the second node, or the angle information of the second node.

4. The method according to claim 3, wherein, The channel stability condition includes at least one of the following: The signal-to-noise ratio of the current communication signal is greater than the first threshold; During the transmission of M communication signals, the number of data transmission decoding errors between the first node and the second node regarding the communication signals is less than the second threshold. The signal-to-noise ratio of the sensed signal is greater than the third threshold within the current coherent processing time interval; The average signal-to-noise ratio of the sensed signal within the most recent N consecutive coherent processing time intervals is greater than the fourth threshold; The absolute value of the difference between the signal-to-noise ratio (SNR) of the sensed signal in the current coherent processing time interval and the average SNR of the sensed signal in the most recent L coherent processing time intervals is less than the fifth threshold; or, The feature correlation between the velocity of the second node and the movement distance of the second node within the most recent N consecutive coherent processing time intervals is greater than a sixth threshold. The feature correlation is used to characterize the stability or reliability of the movement trajectory of the second node obtained by the first node through processing the sensing signal.

5. The method according to claim 4, wherein, The feature correlation is determined based on the position and velocity information of the second node in each of the N consecutive coherent processing time intervals.

6. The method according to claim 2, wherein, The method further includes: After determining that the beam tracking strategy is to enable beam tracking, a first indication message is sent to the second node, which is used to indicate that beam tracking of the second node is enabled.

7. The method according to claim 2, wherein, The method further includes: During beam tracking of the second node, the acquired signal measurement information is updated to obtain the updated signal measurement information; Based on the updated signal measurement information, the transmission configuration information is adjusted to obtain the adjusted transmission configuration information; the transmission configuration information includes beam configuration information and transmission strategy between the second node and the second node, and the transmission strategy includes at least a modulation and coding strategy and a rank transmission strategy.

8. The method according to claim 7, wherein, The beam configuration information includes the beam direction and / or beam width.

9. The method according to claim 8, wherein, The beam configuration information includes the direction of the beam, and the adjustment of the transmission configuration information based on the updated signal measurement information includes: The direction of the beam is adjusted based on the angle information of the second node.

10. The method according to claim 8, wherein, The beam configuration information includes the beam width, and the adjustment of the transmission configuration information based on the updated signal measurement information includes: The beam width is adjusted based on the position information and / or velocity information of the second node; wherein the velocity information of the second node includes the tangential angular velocity of the line connecting the first node and the second node.

11. The method according to claim 10, wherein, The tangential angular velocity and the beam width are positively correlated.

12. The method according to claim 10, wherein, Adjusting the beamwidth based on the position information and / or velocity information of the second node includes: The distance to the second node is determined based on the location information of the second node; The beam width is adjusted based on the distance; wherein the distance and the beam width are negatively correlated.

13. The method according to claim 7, wherein, The level of the modulation and coding strategy is positively correlated with the signal-to-noise ratio of the sensed signal and / or the signal-to-noise ratio of the communication signal.

14. The method according to claim 7, wherein, During beam tracking of the second node, the rank indication remains unchanged.

15. The method according to claim 7, wherein, The method further includes: The adjustment information is sent to the second node, and the adjustment information includes the adjusted transmission configuration information and the location information of the first node.

16. The method according to claim 15, wherein, The adjustment information also includes position information and / or velocity information obtained by the first node from the sensing and measurement of the second node.

17. The method according to claim 2, wherein, The method further includes: During beam tracking of the second node, the acquired signal measurement information is updated to obtain the updated signal measurement information; Determine whether the updated signal measurement information meets the channel instability condition; If the updated signal measurement information satisfies the channel instability condition, it is determined to disable beam tracking for the second node.

18. The method according to claim 17, wherein, The channel instability condition includes at least one of the following: The signal-to-noise ratio of the current communication signal is less than the seventh threshold; During the transmission of P communication signals, the number of data transmission decoding errors between the first node and the second node regarding the communication signals exceeds the eighth threshold. The signal-to-noise ratio of the sensed signal is less than the ninth threshold within the current coherent processing time interval; The average signal-to-noise ratio of the sensed signal within the most recent K consecutive coherent processing time intervals is less than the tenth threshold; The absolute value of the difference between the signal-to-noise ratio (SNR) of the sensed signal in the current coherent processing time interval and the average SNR of the sensed signal in the most recent Q coherent processing time intervals is greater than the eleventh threshold; or, The characteristic correlation between the velocity of the second node and the movement distance of the second node within the most recent K consecutive coherent processing time intervals is less than the twelfth threshold.

19. The method of claim 17, wherein, The method further includes: After disabling beam tracking of the second node, a second instruction message is sent to the second node, the second instruction message being used to instruct the disabling of beam tracking of the second node.

20. The method according to claim 19, wherein, The method further includes: After beam tracking of the second node is turned off, a beam scanning process is performed; Receive the beam measurement report sent by the second node in response to the beam scanning process; The beam configuration information between the beam and the second node is determined based on the beam measurement report.

21. The method according to claim 19, wherein, The method further includes: Based on the beam configuration information, a channel measurement signal is sent to the second node; Receive channel state information from the second node in response to the channel measurement signal; Based on the channel state information, a transmission strategy is determined with the second node, and the transmission strategy includes at least a modulation and coding strategy and a rank transmission strategy. The beam configuration information and the transmission strategy are sent to the second node.

22. A beam tracking method, wherein, Applied to the second node, the method includes: The system receives a first indication message sent by a first node, which instructs the first node to initiate beam tracking of the second node. The first indication message is determined by the first node based on signal measurement information, which includes communication signal measurement information and sensing signal measurement information.

23. The method according to claim 22, wherein, The method further includes: The system receives adjustment information sent by the first node. The adjustment information includes adjusted transmission configuration information and the location information of the first node. The transmission configuration information includes beam configuration information and transmission strategy between the first node and the second node. The transmission strategy includes at least a modulation and coding strategy and a rank transmission strategy. Based on the adjustment information, the beam configuration information of the second node is adjusted.

24. The method according to claim 23, wherein, The adjustment information also includes position information and / or velocity information obtained by the first node sensing and measuring the second node.

25. The method according to claim 22, wherein, The method further includes: The system receives a second indication message sent by the first node, which instructs the first node to disable beam tracking of the second node.

26. The method of claim 25, wherein, The method further includes: In response to the beam scanning process, a beam measurement report is sent to the first node.

27. The method according to claim 26, wherein, The method further includes: The channel measurement signal sent by the first node based on the beam configuration information is received and measured to obtain channel state information, wherein the beam configuration information is determined based on the beam measurement report; Send the channel state information to the first node; The system receives the beam configuration information and transmission strategy sent by the first node, wherein the transmission strategy includes at least a modulation and coding strategy and a rank transmission strategy.

28. A communication system, wherein, Including the first node and the second node, The first node is used to acquire signal measurement information, which includes communication signal measurement information and sensing signal measurement information between the first node and the second node; based on the signal measurement information, a beam tracking usage strategy for the second node is determined, which is used to indicate whether beam tracking is turned on or off. The second node is used to receive first indication information sent by the first node. The first indication information is used to instruct the first node to start beam tracking of the second node. The first indication information is determined by the first node based on signal measurement information, which includes communication signal measurement information and sensing signal measurement information.

29. A communication device, wherein, include: Memory and processor; The memory and the processor are coupled; The memory is used to store instructions that can be executed by the processor; When the processor executes the instructions, it performs the method as described in any one of claims 1 to 27.

30. A computer-readable storage medium, wherein, The computer-readable storage medium stores computer instructions that, when executed on a communication device, cause the communication device to perform the method as described in any one of claims 1 to 27.

31. A computer program product, wherein, When the computer program product is executed, it implements the method as described in any one of claims 1 to 27.

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