CN115442746A - A beam tracking method, equipment, device and storage medium - Google Patents

Abstract

An embodiment of the present application provides a beam tracking method, device, device, and storage medium. The method includes: receiving motion state information sent by a terminal device; Perform prediction to obtain a prediction result, the prediction result includes one or more predicted motion directions, the first beam is the beam currently covering the terminal device; Beam tracking is performed in each of the predicted motion directions. Therefore, the embodiment of the present application realizes the continuous and uninterrupted service to the high-speed terminal, and improves the communication quality.

Description

A beam tracking method, equipment, device and storage medium

technical field

The present application relates to the technical field of communications, and in particular to a beam tracking method, device, device and storage medium.

Background technique

The low-orbit satellite hopping beam communication system consists of ground gateways (such as base stations), satellites (beam pointing hopping) and terminals.

In the low-orbit satellite hopping beam communication system, continuous service to terminals in different azimuths can be realized through beam hopping.

However, due to the large maneuverability of the terminal movement, there will be situations where the beam cannot cover the terminal in time, resulting in interruption of terminal services.

Contents of the invention

Embodiments of the present application provide a beam tracking method, device, device, and storage medium, which are used to solve the problem that the beam cannot cover the terminal in time due to the large maneuverability of the terminal movement in the prior art, resulting in terminal service failure. The defect of interruption can realize continuous and uninterrupted service to high-speed terminals.

In the first aspect, the embodiment of the present application provides a beam tracking method, including:

Receive the motion status information sent by the terminal device;

According to the motion state information, the motion direction of the terminal device in the first beam is predicted to obtain a prediction result, the prediction result includes one or more predicted motion directions, and the first beam currently covers the Beams for terminal equipment;

Perform beam tracking in each of the one or more predicted motion directions according to the set beam tracking scheduling manner.

Optionally, according to the beam tracking method according to an embodiment of the present application, the motion state information includes one or more of the following:

The latitude and longitude elevation information of the terminal device;

Speed information of the terminal device in different directions;

The location information of the terminal device in the first coordinate system.

Optionally, according to the beam tracking method according to an embodiment of the present application, the predicting the movement direction of the terminal device in the first beam according to the movement state information includes:

determining the current position of the terminal device within the first beam according to the motion state information;

Predicting the movement direction of the terminal device within the first beam according to one or more historical positions of the terminal device and the current position.

Optionally, according to the beam tracking method according to an embodiment of the present application, performing beam tracking in each of the one or more predicted motion directions according to the set beam tracking scheduling method includes:

determining a second beam for tracking and covering the terminal device according to the predicted motion direction;

The terminal device is tracked and covered by the second beam.

Optionally, according to the beam tracking method in an embodiment of the present application, a center point of an overlapping coverage area formed by the second beam and the first beam is the current location of the terminal device.

Optionally, the beam tracking method according to an embodiment of the present application further includes:

Determine whether the terminal device operates out of the coverage of the first beam by using the signal strength of the first beam and the link quality of communication with the first beam;

Release the first beam when it is determined that the terminal device runs out of the coverage of the first beam.

Optionally, according to the beam tracking method of an embodiment of the present application,

The performing beam tracking in each of the one or more predicted motion directions according to the set beam tracking scheduling method includes:

The orientation of the first beam is adjusted according to the predicted motion direction, and the center point of the adjusted first beam is the current position of the terminal device.

Optionally, in the beam tracking method according to an embodiment of the present application, the adjusting the azimuth of the first beam according to the predicted motion direction includes:

When the deviation between the current position of the terminal device and the center point of the first beam is greater than a set angle value, adjusting the center point of the first beam to the current position of the terminal device.

In the second aspect, the embodiment of the present application also provides a beam tracking method, including:

determining motion state information of the terminal device in a first beam, where the first beam is a beam currently covering the terminal device;

Send the motion state information to the network device.

Optionally, according to the beam tracking method according to an embodiment of the present application, the motion state information includes one or more of the following:

The latitude and longitude elevation information of the terminal device;

Speed information of the terminal device in different directions;

The location information of the terminal device in the first coordinate system.

Optionally, according to the beam tracking method according to an embodiment of the present application, the sending the motion state information to the network device includes:

determining the reporting period of the motion state information;

Sending the motion state information to the network device according to the reporting period.

Optionally, according to the beam tracking method according to an embodiment of the present application, the determining the reporting period of the motion state information includes:

The reporting period is determined according to a first formula; wherein, the first formula includes:

T<R/(|Vu+Vs|×N)

Wherein, R represents the coverage diameter of the first beam; Vu represents the maximum speed of the terminal device; Vs represents the maximum speed of the satellite; N represents the maximum reporting times of the first beam; T represents the reporting cycle.

In the third aspect, the embodiment of the present application further provides a network device, including a memory, a transceiver, and a processor, where:

A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; a processor for reading the computer programs in the memory and implementing the beam described in the first aspect above Trace the steps of a method method.

In a fourth aspect, an embodiment of the present application provides a terminal device, including a memory, a transceiver, and a processor, wherein:

A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; a processor for reading the computer programs in the memory and implementing the beam described in the second aspect above The steps of the trace method.

In the fifth aspect, the embodiment of the present application provides a beam tracking device, including:

a receiving unit, configured to receive motion state information sent by the terminal device;

a prediction unit, configured to predict the movement direction of the terminal device in the first beam according to the movement state information, and obtain a prediction result, the prediction result including one or more predicted movement directions, and the first beam is the beam currently covering the terminal device;

A beam tracking unit, configured to perform beam tracking in each of the one or more predicted motion directions according to a set beam tracking scheduling manner.

In a sixth aspect, the embodiment of the present application provides a beam tracking device, including:

a determining unit, configured to determine motion state information of the terminal device in a first beam, where the first beam is a beam currently covering the terminal device;

A sending unit, configured to send the motion state information to a network device.

In the seventh aspect, the embodiment of the present application provides a processor-readable storage medium, the processor-readable storage medium stores a computer program, and the computer program is used to make the processor perform the above-mentioned first aspect. The steps of the beam tracking method described above.

In an eighth aspect, the embodiment of the present application provides a processor-readable storage medium, the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the above-mentioned second aspect. The steps of the beam tracking method described above.

The beam tracking method, device, device, and storage medium provided in the embodiments of the present application, by receiving the motion state information sent by the terminal device, predict the motion direction of the terminal device in the first beam according to the motion state information, obtain the prediction result, and predict The result includes one or more predicted motion directions, the first beam is the beam currently covering the terminal device, and beam tracking is performed on each of the one or more predicted motion directions according to the set beam tracking scheduling method, This avoids the interruption of terminal services caused by the failure of the beam to cover the terminal in time, thereby realizing continuous and uninterrupted services to high-speed terminals and improving communication quality.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of a satellite hopping beam communication system;

FIG. 2 is one of the schematic flow diagrams of a beam tracking method provided in an embodiment of the present application;

FIG. 3 is a schematic diagram of an application scenario of the multi-beam splicing tracking method provided by the embodiment of the present application;

FIG. 4 is a schematic diagram of an application scenario of the dual-beam overlapping tracking method provided by the embodiment of the present application;

FIG. 5 is the second schematic flow diagram of a beam tracking method provided by an embodiment of the present application;

Fig. 6 is the third schematic flow diagram of a beam tracking method provided by the embodiment of the present application;

FIG. 7 is a fourth schematic flow diagram of a beam tracking method provided by an embodiment of the present application;

FIG. 8 is one of the structural schematic diagrams of a beam tracking device provided by an embodiment of the present application;

Fig. 9 is the second structural schematic diagram of a beam tracking device provided by the embodiment of the present application;

FIG. 10 is a schematic structural diagram of a network device provided by an embodiment of the present application;

FIG. 11 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.

detailed description

The term "and/or" in the embodiments of this application describes the association relationship of associated objects, indicating that there may be three relationships, for example, A and/or B, which may mean: A exists alone, A and B exist simultaneously, and B exists alone These three situations. The character "/" generally indicates that the contextual objects are an "or" relationship.

The term "plurality" in the embodiments of the present application refers to two or more, and other quantifiers are similar.

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

The low-orbit satellite hopping beam communication system consists of ground gateways (such as base stations), satellites (beam pointing hopping) and terminals. Low-orbit satellite communication systems generally use beam-hopping technology to increase system capacity, reduce interference, and improve configuration flexibility. The hopping beam hops within the coverage of the satellite cell according to a certain period, and the pointing space orientation of the beam hopping changes each time. The single dwell time of the beam in each spatial orientation is called the dwell time; the beam hopping Changing to visit all the candidate positions once is called a hopping cycle. For high-speed mobile terminals or ultra-high-speed mobile terminals operating in the air, due to the large maneuverability of terminal movement, there may be situations where the beam cannot cover the terminal in time, which will cause terminal service interruption.

Fig. 1 is the schematic diagram of a kind of satellite hopping beam communication system; As shown in Fig. Earth Orbit, LEO) satellite), it can also be a mid-orbit satellite hopping beam communication system (that is, the satellite in Figure 1 is a Middle Earth Orbit (MiddleEarth Orbit, MEO) satellite), and it can also be a high-orbit satellite hopping beam communication system (That is, the satellite in FIG. 1 is a high earth orbit (Geostationary Orbit, GEO) satellite).

The following takes the low-orbit satellite hopping beam communication system as an example to illustrate. The medium-orbit satellite hopping beam communication system and the high-orbit satellite hopping beam communication system are similar to the low-orbit satellite hopping beam communication system, and will not be repeated in the future.

The low-orbit satellite hopping beam communication system includes LEO satellites and ground terminals. The orbital height of LEO satellites generally does not exceed 1500km. The beams are hopped in different directions, and the overall capacity is improved on the basis of taking into account terminals in different positions. Since the moving speed of the satellite can reach 7.6km/s, even if the ground terminal does not move, the relative speed between the terminal and the satellite can reach the order of several kilometers per second. It can be seen that the rapid movement of the satellite and the terminal will affect the continuous coverage of the terminal.

In the low-orbit satellite beam-hopping communication system, continuous service to terminals in different azimuths can be achieved through beam hopping, but beam tracking is not supported.

For some air flight terminals with high importance, fast movement speed and strong mobility, the sudden acceleration or turning movement of the terminal will cause discontinuous satellite beam coverage and cause the terminal to lose contact.

In order to continuously serve high-speed moving terminals, the embodiment of this application proposes a beam tracking method, device, device, and storage medium. After the terminal accesses the beam, it periodically reports the location, and the network equipment predicts the direction of the terminal according to the terminal location and motion characteristics. , and then schedule or adjust beams to implement continuous coverage and beam tracking.

Among them, the method and the device are conceived based on the same application. Since the principle of solving problems of the method and the device is similar, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.

The technical solutions provided by the embodiments of the present application can be applied to various systems, which can be the satellite hopping beam communication system shown in Figure 1 (for example, the satellite hopping beam communication system can be a low-orbit satellite hopping beam communication system, or It can be a mid-orbit satellite hopping beam communication system, a high-orbit satellite hopping beam communication system), or a 5G system. For example, the applicable system may be global system of mobile communication (GSM) system, code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) general packet radio General packet radioservice (GPRS) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, advanced long term evolution (long term evolution advanced, LTE-A) system, universal mobile telecommunications system (universal mobile telecommunications system, UMTS), worldwide interconnection microwave access (worldwide interoperability for microwave access, WiMAX) system, 5G new air interface (New Radio, NR) system, etc. These various systems include end devices and network devices. The system may also include a core network part, such as an evolved packet system (Evloved Packet System, EPS), a 5G system (5GS), and the like.

The network equipment involved in the embodiment of the present application can be a satellite (for example, the satellite can be a LEO satellite, a MEO satellite, or a GEO satellite), or a base station, and the base station can include multiple district. Depending on the specific application, the base station can also be called an access point, or it can be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device can be used to interchange received over-the-air frames with Internet Protocol (IP) packets and act as a router between the wireless terminal device and the rest of the access network, which can include the Internet Protocol (IP) communication network. Network devices may also coordinate attribute management for the air interface. For example, the network device involved in the embodiment of the present application may be a network device (Base Transceiver Station, BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA) , may also be a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolved network device (NodeB) in a long term evolution (long term evolution, LTE) system evolutional Node B, eNB or e-NodeB), the 5G base station (gNB) in the 5G network architecture (next generation system), or the home evolved Node B (HeNB), relay node (relay node), The home base station (femto), pico base station (pico), etc. are not limited in this embodiment of the present application. In some network structures, a network device may include a centralized unit (centralized unit, CU) node and a distributed unit (distributed unit, DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

The terminal device involved in this embodiment of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the names of the terminal equipment may be different. For example, in a 5G system, the terminal equipment may be called user equipment (User Equipment, UE). The wireless terminal device can communicate with one or more core networks (Core Network, CN) via the radio access network (Radio Access Network, RAN), and the wireless terminal device can be a mobile terminal device, such as a mobile phone (or called a "cellular "telephones) and computers with mobile terminal equipment, such as portable, pocket, hand-held, computer built-in or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network. For example, Personal Communication Service (Personal Communication Service, PCS) telephone, cordless telephone, Session Initiated Protocol (Session Initiated Protocol, SIP) telephone, Wireless Local Loop (Wireless Local Loop, WLL) station, Personal Digital Assistant (Personal Digital Assistant, PDA) and other devices. The wireless terminal equipment may also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, A remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device) are not limited in this embodiment of the application.

Figure 2 is one of the flow diagrams of a beam tracking method provided in the embodiment of the present application, the beam tracking method can be used for network equipment, the network equipment can be the satellite in Figure 1 (for example, the satellite can be a LEO satellite, It can also be a MEO satellite, or a GEO satellite), or it can be a base station. As shown in Figure 2, the beam tracking method may include the following steps:

Step 201. Receive exercise state information sent by a terminal device.

Specifically, the terminal device has the capability of connecting beams of different frequencies at the same time, and can connect multiple beams at the same time, so as to improve reliability.

After the terminal device is connected to the network, it can periodically report the movement state information, so that the network device can predict the next movement direction of the terminal based on the movement state information of the terminal, calculate the beam tracking method based on the position of the terminal in the current beam, and schedule or adjust the beam in Continuous coverage is implemented for the next movement direction of the terminal to ensure uninterrupted terminal services.

The terminal equipment accesses the network, and the identification methods of the network equipment for the air high-speed terminal include:

(1) Increase the terminal equipment type identification, which corresponds to the preamble (Preamble) and random access opportunity (Randomaccess Occasion, RO) resources. When a terminal device is connected, the network device can identify the terminal type.

(2) Use the device code of the terminal or the network access identification code of the Subscriber Identification Module (SIM) card to judge and distinguish the terminal type. After the terminal device completes functions such as network access and authentication, the network device can identify Terminal class.

Among them, the SIM card is an identification card, which is used not only to distinguish the type of terminal, but also to identify the specific terminal; a special type of SIM card is only dedicated to this high-speed terminal, and corresponds to the terminal one by one; the SIM card can be used to identify Specifically which terminal.

Step 202: Predict the movement direction of the terminal device in the first beam according to the movement state information, and obtain a prediction result. The prediction result includes one or more predicted movement directions, and the first beam is a beam currently covering the terminal device.

Specifically, when predicting the movement direction of the terminal in the first beam according to the movement state information of the terminal, a Kalman filter method may be used, or other algorithms may be used according to requirements.

Step 203: Perform beam tracking in each of the one or more predicted motion directions according to the set beam tracking scheduling manner.

Specifically, the set beam tracking scheduling mode may be configured in advance, or may be determined according to requirements. The set beam tracking scheduling method may have one method, for example, multi-beam spread-coverage tracking at different frequencies, or multiple methods, for example, dual-beam alternate tracking at different frequencies and continuous tracking with a single beam.

It can be seen from the above embodiments that by receiving the motion state information sent by the terminal device, the motion direction of the terminal device in the first beam is predicted according to the motion state information to obtain a prediction result, and the prediction result includes one or more predicted motion directions, The first beam is the beam that currently covers the terminal equipment. According to the set beam tracking scheduling method, beam tracking is performed in each of one or more predicted motion directions, which avoids the occurrence of beams that cannot cover the terminal in time. In the event of interruption of terminal services, continuous and uninterrupted services to high-speed terminals are realized, and communication quality is improved.

Optionally, the motion state information includes one or more of the following:

The latitude and longitude elevation information of the terminal device;

Speed information of the terminal device in different directions;

The location information of the terminal device in the first coordinate system.

Specifically, the first coordinate system may be an Earth Centered Earth Fixed coordinate system (Earth Centered Earth Fixed, ECEF), or other coordinate systems, such as: World Geodetic System (World Geodetic System, WGS)-84 coordinate system, etc.

For example, the terminal reports three-dimensional coordinate information and three-dimensional velocity information to the network device, and the network device needs to calculate the movement of the terminal to judge the position of the terminal device in the current beam, and use the movement position of multiple time points to predict the next step of the terminal device direction of motion in order to schedule beams for tracking.

Another example: the network device needs to project the motion parameters of the terminal device to the tangential direction of the beam according to the data reported by the terminal device, the ephemeris of the satellite, the characteristics of the current beam, etc., and calculate the velocity value of the terminal device in the tangential direction of the beam. Calculate the position of the terminal device in the beam, the angle between the terminal device and the center of the beam; judge whether the terminal device flies away from the current beam based on multiple calculation results, and predict the next movement direction of the terminal device; implement tracking and coverage according to the pre-judgment scheduling beam.

It can be seen from the above-mentioned embodiments that when a terminal device reports motion status information, it may report latitude and longitude elevation information, speed information, or location information, so that the network device can predict the next movement direction of the terminal device based on these information, which is helpful. To improve the accuracy of beam tracking.

Optionally, the predicting the movement direction of the terminal device within the first beam according to the movement state information includes:

determining the current position of the terminal device within the first beam according to the motion state information;

Predicting the movement direction of the terminal device within the first beam according to one or more historical positions of the terminal device and the current position.

Specifically, one or more historical positions of the terminal device may all be located within the first beam; or all may be located outside the first beam; or part of the historical positions may be located within the first beam, and part of the historical positions may be located within the first beam. outside the beam. In this application, there is no restriction on whether the historical position is located in the first beam.

It can be seen from the foregoing embodiments that the network device may predict the movement direction of the terminal device based on the currently received movement state information or historical movement state information, which helps to improve the accuracy of predicting the movement direction. Optionally, the set beam tracking scheduling method includes one or more of the following:

Inter-frequency multi-beam extended coverage tracking;

Different frequency dual beam alternate tracking;

Single beam continuous tracking.

Specifically, inter-frequency multi-beam extended coverage tracking refers to scheduling multiple inter-frequency beams and deploying them around the current beam of the terminal to cope with the rapid maneuvering and changing direction of the terminal in the air to achieve tracking coverage.

Inter-frequency dual-beam alternate tracking refers to using the current beam and another tracking beam to overlap highly in the coverage area to cope with the rapid and uncertain movement of the terminal and achieve the purpose of continuous coverage.

Single-beam continuous tracking is a special case of multi-beam tracking. In this scenario, the satellite (for example, the satellite can be a LEO satellite, a MEO satellite, or a GEO satellite) only one beam can provide Serve.

It can be seen from the above-mentioned embodiments that when the network equipment implements beam tracking, it can adopt one or more of different-frequency multi-beam extended coverage tracking, different-frequency dual-beam alternate tracking, and single-beam continuous tracking according to requirements, thereby improving beam tracking. Tracking flexibility.

Optionally, performing beam tracking in each of the one or more predicted motion directions according to the set beam tracking scheduling method includes:

determining a second beam for tracking and covering the terminal device according to the predicted motion direction;

The terminal device is tracked and covered by the second beam.

Specifically, the first beam does not have tracking properties, and only the second beam tracks the predicted movement direction of the terminal device. Wherein, the quantity of the second beam may be one or more.

If the number of second beams can be multiple, a multi-frequency multi-beam extended coverage tracking method may be used to track multiple predicted motion directions of the terminal device. Wherein, multiple second beams require the terminal device to have the same number of receivers to implement inter-frequency connections.

If the number of the second beam is 1, the second beam and the first beam may be formed into an overlapping coverage area by adopting an inter-frequency dual-beam alternate tracking manner, and the center point of the overlapping coverage area is the current location of the terminal device.

It can be seen from the above embodiments that the second beam can be used to track and cover the terminal equipment, thereby ensuring the continuity of terminal services and improving the communication quality.

Optionally, a center point of an overlapping coverage area formed by the second beam and the first beam is the current location of the terminal device.

Specifically, the overlapping coverage area of the second beam and the first beam may be determined according to the current location of the terminal device, that is, the center point of the overlapping coverage area is the current location of the terminal device.

It can be seen from the foregoing embodiments that the second beam can be determined according to the current position of the terminal device, which improves the efficiency of determining the beam.

Optionally, performing beam tracking in each of the one or more predicted motion directions according to the set beam tracking scheduling manner further includes:

Determine whether the terminal device operates out of the coverage of the first beam by using the signal strength of the first beam and the link quality of communication with the first beam;

Release the first beam when it is determined that the terminal device runs out of the coverage of the first beam.

Specifically, if the terminal device runs out of the coverage area of the first beam and enters the coverage area of the second beam, the first beam may be released at this time, thus avoiding waste of resources. After the first beam is released, the second beam will change to have no tracking feature, while other beams start to track the moving direction of the terminal.

It can be seen from the foregoing embodiments that when the terminal device runs out of the coverage of the first beam, the first beam may be released, thereby avoiding waste of resources.

The above specific process of determining the second beam is described below with two specific embodiments:

Embodiment 1: The situation of multiple second beams

The set beam tracking scheduling method is inter-frequency multi-beam extended coverage tracking;

The performing beam tracking in each of the one or more predicted motion directions according to the set beam tracking scheduling method includes:

When the predicted motion direction is directed by the terminal device to the edge of the first beam, determining a plurality of second beams with different frequencies for expanding the coverage area of the first beam;

The coverage of the plurality of second beams with different frequencies is spliced with the coverage of the first beam.

Specifically, the first beam is the current beam, which does not have a tracking feature; the second beam is a tracking beam, which tracks the predicted movement direction of the terminal device.

If the predicted movement direction is from the terminal device to the edge of the first beam, that is, the terminal moves close to the edge of the first beam, then the network device can use multi-beam splicing to ensure the continuity of terminal services, as shown in Figure 3. Multi-beam splicing tracking Law.

It can be seen from the foregoing embodiments that when the terminal device points to the edge of the first beam, multi-beam splicing may be used to ensure continuous service of the terminal, thereby ensuring communication quality.

Optionally, also include:

When the terminal device moves out of the beam coverage area of the first beam and enters the coverage area of the second beam, release the first beam, and the movement of the terminal device in the second beam Predict the direction, and schedule multiple other beams with different frequencies according to the prediction result of the terminal device in the second beam, so as to splice with the coverage area of the second beam.

Specifically, if the terminal device runs out of the beam coverage of the first beam and enters the coverage area of the second beam, for the second beam, multi-beam splicing can still be used to ensure the continuous service of the terminal, as shown in Figure 3. splicing tracking method. Wherein, when the first beam is released, the second beam will be changed to have no tracking property, and multiple other beams with different frequencies start to track the moving direction of the terminal.

It can be seen from the above embodiments that when the terminal device runs out of the beam coverage of the first beam and enters the coverage area of the second beam, the first beam can be released, and for the second beam, multi-beam splicing can still be used to ensure terminal services Continuous, in this way, while ensuring the communication quality of the terminal equipment, resource waste is also avoided by releasing the first beam.

The above-mentioned multi-beam splicing tracking method shown in Figure 3 uses network equipment to predict the direction of terminal movement. According to the prediction result, it may include multiple directions, and dispatches tracking beams to implement early coverage to ensure terminal service continuity. Its specific implementation process includes:

(1) The terminal device moves within the current beam, and the network device predicts the direction of movement of the terminal device according to the motion state information reported by the terminal device.

(2) When the network device predicts that the terminal device is moving close to the edge of the current beam, it schedules multiple different-frequency beams to splice the coverage of the current beam, that is, the network device schedules multiple beams to cover the adjacent area of the current beam, Stitching extends coverage area.

(3) When the terminal device runs out of the current beam range, the network device releases the current beam, and reorganizes and schedules the beam according to the prediction of the terminal motion characteristics to implement coverage expansion to ensure that the terminal device does not lose connection;

(4) Repeat the above steps until the end of the terminal movement.

Embodiment 2, the case of a second beam

The set beam tracking scheduling method is alternate frequency dual beam tracking;

The performing beam tracking in each of the one or more predicted motion directions according to the set beam tracking scheduling method includes:

determining a third beam (that is, a second beam) for forming an overlapping coverage area with the first beam according to the predicted motion direction, and the center point of the overlapping coverage area is the current position of the terminal device;

The coverage of the first beam is overlapped and covered by the third beam.

Specifically, the first beam is the current beam, which does not have a tracking feature; the third beam is an overlapping tracking beam, which tracks the predicted movement direction of the terminal device.

Network devices can use dual-beam overlapping tracking to ensure terminal service continuity according to the predicted movement direction of the terminal equipment, as shown in Figure 4 for the dual-beam overlapping tracking method.

It can be seen from the foregoing embodiments that the network device can adopt dual-beam overlapping tracking to ensure terminal service continuity in the predicted movement direction of the terminal device, thereby ensuring communication quality.

Optionally, also include:

When the terminal device moves out of the beam coverage area of the first beam and enters the coverage area of the third beam, predict the movement direction of the terminal device in the third beam, and according to the Scheduling another beam according to the prediction result of the terminal device in the third beam, so as to form another overlapping coverage area with the third beam.

Specifically, if the terminal device runs out of the beam coverage of the first beam and enters the coverage area of the third beam, for the third beam, dual-beam overlapping tracking can still be used to ensure the continuity of terminal services, as shown in Figure 4. Beam Overlap Tracking Method. Wherein, when the first beam is released, the third beam will be changed to have no tracking property, and another beam forming another overlapping coverage area with the third beam starts to track the moving direction of the terminal.

It can be seen from the above embodiments that when the terminal device runs out of the beam coverage of the first beam and enters the coverage area of the third beam, the first beam can be released, and for the third beam, dual-beam overlapping tracking can be used to ensure that the terminal Service continuity ensures the communication quality of the terminal equipment and avoids waste of resources by releasing the first beam.

The above-mentioned dual-beam overlapping tracking method as shown in Figure 4 uses the current beam and another tracking beam to overlap highly in the coverage area to cope with the rapid and uncertain movement of the terminal and achieve the purpose of continuous coverage.

The overlapping method of the tracking beam and the current beam is: taking the point closest to the edge of the current beam from the terminal as a reference, and the center point of the tracking beam overlaps with the reference.

Its specific implementation process includes:

(1) The terminal device is moving in the current beam, and the network device predicts the movement direction of the terminal device according to the motion state information reported by the terminal device.

(2) The network device schedules another independent beam to form overlapping coverage with the current beam, which is called an overlapping beam, and the overlapping area is centered on the terminal location.

(3) When the terminal device completely leaves the coverage of the current beam and enters the coverage of the overlapping beam, the network device releases the current beam and schedules the new beam and the overlapping beam to form a new overlapping coverage area. Similarly, the new overlapping coverage area remains Centered on the end position.

(4) Repeat the above steps until the end of the terminal movement.

Optionally, performing beam tracking in each of the one or more predicted motion directions according to the set beam tracking scheduling method includes:

The orientation of the first beam is adjusted according to the predicted motion direction, and the center point of the adjusted first beam is the current position of the terminal device.

Specifically, the first beam is the current beam. The network device can use single beam tracking according to the predicted movement direction of the terminal device to ensure the continuity of the terminal service. Among them, single-beam tracking is a capability of network equipment, and single-beam tracking is a special case of multi-beam tracking. In this scenario, the satellite (for example, the satellite can be a LEO satellite, a MEO satellite, or a GEO satellite ) Only one beam can provide services for high-speed moving terminals.

It can be seen from the foregoing embodiments that the network device can use single beam tracking in the predicted movement direction of the terminal device to ensure continuous service of the terminal, thereby ensuring communication quality.

Optionally, the adjusting the orientation of the first beam according to the predicted motion direction includes:

When the deviation between the current position of the terminal device and the center point of the first beam is greater than a set angle value, adjusting the center point of the first beam to the current position of the terminal device.

Specifically, the set angle value may be a pre-configured fixed value or an angle value configured according to actual conditions. For example: set the angle value to θ/2, where, for a conical beam, θ represents the half-beam angle.

It can be seen from the above embodiments that only when the deviation between the current position of the terminal device and the center point of the first beam is greater than the set angle value, the center point of the first beam is adjusted, so that while ensuring the communication quality of the terminal device, it can also Avoid wasting resources.

The single-beam tracking method mentioned above provides services for high-speed moving terminals through one beam. Its specific implementation process includes:

(1) The terminal device accesses the network and periodically reports motion status information.

(2) The network device calculates and predicts the next movement direction of the terminal device according to the ephemeris, terminal position, movement and other information.

(3) When the deviation between the position of the terminal and the center point of the current beam is greater than θ/2 (for a conical beam, θ represents the included angle of the half beam), the network device adjusts the current beam orientation so that the center of the beam is aligned with the position of the terminal to achieve Tracking coverage for end devices.

Optionally, the network device supports the dual connectivity function of the terminal device.

Specifically, in order to increase the service reliability of the terminal device in the network, the terminal device may have a dual connection function, and correspondingly, the network device may also support the dual connection function of the terminal device.

It can be seen from the above embodiments that the terminal device may have a dual connection function, and the network device may also support the dual connection function of the terminal device, which helps the terminal service not to be interrupted and improves communication quality.

Optionally, the dual connectivity function is dual connectivity of independent data streams;

The first connection and the second connection in the independent data stream dual connectivity work in different frequency bands, the first connection and the second connection belong to two different radio resource control RRC connections, and the first connection and the second connection The data transmitted by the second connection is the same data, and the priorities of the first connection and the second connection are equal;

The method also includes:

If the transmission data of the first connection and the transmission data of the second connection are received, comparing the transmission data of the first connection and the transmission data of the second connection to obtain a first comparison result;

If the first comparison result is that the transmission data of the first connection is the same as the transmission data of the second connection, selecting the transmission data of the first connection or the transmission data of the second connection;

If the first comparison result is that the transmission data of the first connection is different from the transmission data of the second connection, performing cyclic redundancy on the transmission data of the first connection and the transmission data of the second connection Code check CRC check, get CRC check result;

If the CRC check result includes the transmission data whose CRC check is successful, then select the transmission data whose CRC check is successful;

If the CRC check result does not include the transmission data whose CRC check is successful, retransmission is initiated for the first connection and the second connection respectively.

Specifically, the first connection and the second connection are dual connections with independent data streams. These two connections work in different frequency bands, establish two different RRC connections, and transmit two copies of the same data on the uplink and downlink. The priority of the two connections is Equal; the network device compares the data after receiving the two connected data. When the data is the same, select a piece of data as input; Connections initiate retransmissions respectively.

It can be seen from the above embodiments that the network device can also support the independent data stream dual connection function of the terminal device, which helps the terminal service not to be interrupted and improves the communication quality.

Optionally, the dual connectivity function is dual connectivity of non-independent data streams;

The third connection and the fourth connection in the non-independent data stream dual connection work in different frequency bands, the third connection and the fourth connection belong to the same RRC connection, and the third connection and the fourth connection The priorities are the same, and the data transmitted by the third connection and the fourth connection are different versions of the same data;

The method also includes:

If the transmission data of the third connection and the transmission data of the fourth connection are received, the transmission data of the third connection and the transmission data of the fourth connection are combined and encoded to obtain the combined and encoded transmission data.

Specifically, the third connection and the fourth connection are non-independent data stream dual connections. These two connections work in different frequency bands, belong to the same RRC connection, and have the same priority. The data transmitted by the two connections are different redundancy version, the redundancy version may be a channel-coded redundancy version or a Hybrid Automatic RepeatreQuest (Hybrid Automatic RepeatreQuest, HARQ) codebook. After the network device receives different data from the two connections, it can perform combined decoding, which can increase the reliability of decoding.

It can be seen from the above embodiments that the network device can also support the dual connection function of the non-independent data stream of the terminal device, which helps the terminal service not to be interrupted and improves the communication quality.

FIG. 5 is a second schematic flow diagram of a beam tracking method provided by an embodiment of the present application, and the beam tracking method may be used in a terminal device. As shown in Figure 5, the beam tracking method may include the following steps:

Step 501. Determine motion state information of the terminal device in a first beam, where the first beam is a beam currently covering the terminal device.

Specifically, the terminal device has the capability of connecting beams of different frequencies at the same time, and can connect multiple beams at the same time, so as to improve reliability.

After the terminal device is connected to the network, it can periodically report the movement state information, so that the network device can predict the next movement direction of the terminal based on the movement state information of the terminal, calculate the beam tracking method based on the position of the terminal in the current beam, and schedule or adjust the beam in Continuous coverage is implemented for the next movement direction of the terminal to ensure uninterrupted terminal services.

The terminal equipment accesses the network, and the identification methods of the network equipment for the air high-speed terminal include:

(1) Increase the terminal equipment type identification, which corresponds to the preamble (Preamble) and random access opportunity (Randomaccess Occasion, RO) resources. When a terminal device is connected, the network device can identify the terminal type.

(2) Use the device code of the terminal or the network access identification code of the Subscriber Identification Module (SIM) card to judge and distinguish the terminal type. After the terminal device completes functions such as network access and authentication, the network device can identify Terminal class.

Among them, the SIM card is an identification card, which is used not only to distinguish the type of terminal, but also to identify the specific terminal; a special type of SIM card is only dedicated to this high-speed terminal, and corresponds to the terminal one by one; the SIM card can be used to identify Specifically which terminal.

Step 502, sending the motion state information to the network device.

It can be seen from the above embodiments that by determining the motion state information of the terminal device in the first beam, the first beam is the beam currently covering the terminal device, and sending the motion state information of the terminal device to the network device, so that the network device can Predict the movement direction of the terminal device in the first beam, obtain the prediction result, and perform beam tracking in each of the one or more predicted movement directions according to the set beam tracking scheduling method, thereby avoiding the occurrence of In the case that the beam cannot cover the terminal in time and the terminal service is interrupted, the continuous and uninterrupted service to the high-speed terminal is realized, and the communication quality is improved.

Optionally, the motion state information includes one or more of the following:

The latitude and longitude elevation information of the terminal device;

Speed information of the terminal device in different directions;

The location information of the terminal device in the first coordinate system.

Specifically, the first coordinate system may be an Earth Centered Earth Fixed coordinate system (Earth Centered Earth Fixed, ECEF), or other coordinate systems, such as: World Geodetic System (World Geodetic System, WGS)-84 coordinate system, etc.

It can be seen from the above-mentioned embodiments that when a terminal device reports motion status information, it may report latitude and longitude elevation information, speed information, or location information, so that the network device can predict the next movement direction of the terminal device based on these information, which is helpful. To improve the accuracy of beam tracking.

Optionally, the sending the motion state information to the network device includes:

determining the reporting period of the motion state information;

Sending the motion state information to the network device according to the reporting period.

Specifically, the reporting period may be a period value determined by actual conditions.

It can be seen from the above embodiments that when the terminal device reports the motion state information, it can send the motion state information to the network device according to a certain reporting period, so that the terminal device can obtain the motion state information of the terminal device in time, which helps to improve the efficiency of beam tracking.

Optionally, the determining the reporting period of the motion state information includes:

The reporting period is determined according to a first formula; wherein, the first formula includes:

T<R/(|Vu+Vs|×N)

Wherein, R represents the coverage diameter of the first beam; Vu represents the maximum speed of the terminal device; Vs represents the maximum speed of the satellite; N represents the maximum reporting times of the first beam; T represents the reporting cycle.

Specifically, the unit of R is km; the unit of Vu is km/s; the unit of Vs is km/s; the unit of T is s. The value of N is proportional to Vu. The greater the speed of the terminal device, the more intensive the actions that need to be reported, so as to better implement beam tracking. The minimum value of N is preferably 10.

It can be seen from the foregoing embodiments that the reporting cycle can be adjusted according to the operating speed of the terminal device, thereby improving the reliability of beam tracking.

Optionally, the terminal device has a dual connection function.

In order to increase the service reliability of the terminal device in the network, the terminal device may have a dual connection function.

It can be seen from the above embodiments that the terminal device may have a dual connection function, which helps the service of the terminal to not be interrupted and improves the communication quality.

Optionally, the dual connectivity function is dual connectivity of independent data streams;

The first connection and the second connection in the independent data stream dual connectivity work in different frequency bands, the first connection and the second connection belong to two different radio resource control RRC connections, and the first connection and the second connection The data transmitted by the second connection is the same data, and the priorities of the first connection and the second connection are equal;

The method also includes:

If the transmission data of the first connection and the transmission data of the second connection are received, comparing the transmission data of the first connection and the transmission data of the second connection to obtain a first comparison result;

If the first comparison result is that the transmission data of the first connection is the same as the transmission data of the second connection, selecting the transmission data of the first connection or the transmission data of the second connection;

If the first comparison result is that the transmission data of the first connection is different from the transmission data of the second connection, performing cyclic redundancy on the transmission data of the first connection and the transmission data of the second connection Code check CRC check, get CRC check result;

If the CRC check result includes the transmission data whose CRC check is successful, then select the transmission data whose CRC check is successful;

If the CRC check result does not include the transmission data whose CRC check is successful, retransmission is initiated for the first connection and the second connection respectively.

Specifically, the first connection and the second connection are dual connections with independent data streams. These two connections work in different frequency bands, establish two different RRC connections, and transmit two copies of the same data on the uplink and downlink. The priority of the two connections is Equal; the terminal device compares the data after receiving the two connections. If the data is the same, select a copy of the data as input; Connections initiate retransmissions respectively.

It can be seen from the above embodiments that the terminal device can also support the independent data stream dual connection function of the terminal device, which helps the terminal service not to be interrupted and improves the communication quality.

Optionally, the dual connectivity function is dual connectivity of non-independent data streams;

The third connection and the fourth connection in the non-independent data stream dual connection work in different frequency bands, the third connection and the fourth connection belong to the same RRC connection, and the third connection and the fourth connection The priorities are the same, and the data transmitted by the third connection and the fourth connection are different versions of the same data;

The method also includes:

If the transmission data of the third connection and the transmission data of the fourth connection are received, the transmission data of the third connection and the transmission data of the fourth connection are combined and encoded to obtain the combined and encoded transmission data.

Specifically, the third connection and the fourth connection are dual connections with non-independent data streams. These two connections work in different frequency bands, belong to the same RRC connection, and have the same priority. The data transmitted by the two connections are different redundancy version, the redundancy version may be a redundancy version after channel coding or a HARQ codebook. After the terminal device receives different data from the two connections, it can perform combined decoding, which can increase the reliability of decoding.

It can be seen from the above embodiments that the terminal device can also support the dual connection function of the non-independent data stream of the terminal device, which helps the terminal service not to be interrupted and improves the communication quality.

Corresponding to the dual connection function mentioned above, when the terminal device is switching between dual connections, it can first disconnect the connection in the current beam, and then the terminal device will re-track the new connection in the beam, and always keep the terminal at least 1 connection to provide services.

The implementation process of the above-mentioned beam tracking method will be illustrated below by using two embodiments.

Embodiment 1, as shown in Figure 6:

(1) After the terminal device is connected to the network, it periodically reports the position or motion parameters.

(2) The terminal equipment has the function of inter-frequency dual connection, which can connect to two or more different beams at the same time, has the function of measuring the target beam in advance, and can quickly realize beam switching at the edge of the inter-frequency beam.

Embodiment two, as shown in Figure 7:

(1) The network device receives information such as the location periodically reported by the terminal device.

(2) The network device predicts the next possible movement direction of the terminal based on information such as terminal location, beam pointing, and satellite ephemeris.

(3) The network device calculates the time when the next beam is tracked (that is, the time when the beam is scheduled or adjusted) according to the position of the terminal device in the current beam.

(4) The network equipment schedules or adjusts the beam to be deployed in advance in the next movement direction of the terminal equipment, and provides beam tracking and coverage services for the terminal equipment (that is, the network equipment schedules the beam for the terminal equipment to cover the next possible movement direction of the terminal equipment in advance).

It can be seen from the above embodiments that for high-speed mobile terminals, network equipment dispatches or adjusts beam-hopping resource tracking service terminal equipment through terminal reporting, network prediction, etc., and realizes continuous and uninterrupted services for high-speed terminals.

Fig. 8 is one of the schematic structural diagrams of a beam tracking device provided in the embodiment of the present application, the beam tracking device can be used in the beam tracking method shown in Fig. 2; as shown in Fig. 8, the beam tracking device can include:

A receiving unit 81, configured to receive motion state information sent by the terminal device;

The prediction unit 82 is configured to predict the movement direction of the terminal device in the first beam according to the movement state information, and obtain a prediction result, the prediction result includes one or more predicted movement directions, and the first The beam is a beam currently covering the terminal device;

The beam tracking unit 83 is configured to perform beam tracking in each predicted motion direction of the one or more predicted motion directions according to a set beam tracking scheduling manner.

Further, based on the above device, the exercise state information includes one or more of the following:

The latitude and longitude elevation information of the terminal device;

Speed information of the terminal device in different directions;

The location information of the terminal device in the first coordinate system.

Further, based on the above-mentioned device, the prediction unit 82 includes:

A first determination subunit, configured to determine the current position of the terminal device within the first beam according to the motion state information;

The predicting subunit is configured to predict the movement direction of the terminal device within the first beam according to one or more historical positions of the terminal device within the first beam and the current position.

Further, based on the above device, the set beam tracking scheduling method includes one or more of the following:

Inter-frequency multi-beam extended coverage tracking;

Different frequency dual beam alternate tracking;

Single beam continuous tracking.

Further, based on the above device, the beam tracking unit 83 includes:

A second determining subunit, configured to determine a second beam used to track and cover the terminal device according to the predicted motion direction;

The tracking subunit is configured to track and cover the terminal device through the second beam.

Further, based on the above apparatus, a center point of an overlapping coverage area formed by the second beam and the first beam is the current location of the terminal device.

Further, based on the above device, the beam tracking unit 83 includes:

The third determination subunit is configured to determine whether the terminal device operates out of the coverage of the first beam according to the signal strength of the first beam and the quality of the link communicated with the first beam;

The releasing subunit is configured to release the first beam when it is determined that the terminal device is out of the coverage of the first beam.

Further, based on the above device, the beam tracking unit 83 includes:

The adjustment subunit is configured to adjust the azimuth of the first beam according to the predicted motion direction, and the center point of the adjusted first beam is the current position of the terminal device.

Further, based on the above device, the adjustment subunit is specifically used for:

When the deviation between the current position of the terminal device and the center point of the first beam is greater than a set angle value, adjusting the center point of the first beam to the current position of the terminal device.

It should be noted that the division of units in the embodiment of the present application is schematic, and is only a logical function division, and there may be another division manner in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is implemented in the form of a software function unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or part of the contribution to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other various media that can store program codes. .

It should be noted here that the above-mentioned device provided by the embodiment of the present application can realize all the method steps realized by the above-mentioned method embodiment on the network device side, and can achieve the same technical effect. The same parts and beneficial effects of the method embodiments are described in detail.

Fig. 9 is a second structural schematic diagram of a beam tracking device provided by an embodiment of the present application, which can be used in the beam tracking method shown in Fig. 5; as shown in Fig. 9, the beam tracking device may include:

A determining unit 91, configured to determine motion state information of the terminal device in a first beam, where the first beam is a beam currently covering the terminal device;

The sending unit 92 is configured to send the motion state information to the network device.

Further, based on the above device, the exercise state information includes one or more of the following:

The latitude and longitude elevation information of the terminal device;

Speed information of the terminal device in different directions;

The location information of the terminal device in the first coordinate system.

Further, based on the above device, the sending unit 92 includes:

A reporting period determining subunit, configured to determine the reporting period of the motion state information;

and a sending subunit, configured to send the motion state information to the network device according to the reporting period.

Further, based on the above-mentioned device, the reporting cycle determining subunit is specifically used for:

The reporting period is determined according to a first formula; wherein, the first formula includes:

T<R/(|Vu+Vs|×N)

Wherein, R represents the coverage diameter of the first beam; Vu represents the maximum speed of the terminal device; Vs represents the maximum speed of the satellite; N represents the maximum reporting times of the first beam; T represents the reporting cycle.

Further, based on the above apparatus, the terminal device has a dual connection function.

It should be noted that the division of units in the embodiment of the present application is schematic, and is only a logical function division, and there may be another division manner in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is implemented in the form of a software function unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or part of the contribution to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other various media that can store program codes. .

It should be noted here that the above-mentioned device provided by the embodiment of the present application can realize all the method steps realized by the above-mentioned method embodiment on the network device side, and can achieve the same technical effect. The same parts and beneficial effects of the method embodiments are described in detail.

FIG. 10 is a schematic structural diagram of a network device provided by an embodiment of the present application; the network device can be used to implement the beam tracking method shown in FIG. 2 . As shown in FIG. 10 , the transceiver 1000 is configured to receive and send data under the control of a processor 1010 .

Wherein, in FIG. 10 , the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 1010 and various circuits of the memory represented by the memory 1020 are linked together. The bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein. The bus interface provides the interface. Transceiver 1000 may be a plurality of elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical cables, and other transmission media. The processor 1010 is responsible for managing the bus architecture and general processing, and the memory 1020 can store data used by the processor 1010 when performing operations.

The processor 1010 may be a central processing device (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Comple6 Programmable Logic Device, CPLD), the processor can also adopt a multi-core architecture.

FIG. 11 is a schematic structural diagram of a terminal device provided by an embodiment of the present application. The terminal device can be used to execute the beam tracking method shown in FIG. 5 . As shown in FIG. 11 , the transceiver 1100 is configured to receive and send data under the control of a processor 1110 . Wherein, in FIG. 11 , the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 1110 and various circuits of the memory represented by the memory 1120 are linked together. The bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described in this application. The bus interface provides the interface. Transceiver 1100 may be a plurality of elements, including a transmitter and a receiver, providing means for communicating with various other devices over transmission media, including wireless channels, wired channels, fiber optic cables, etc. Transmission medium. For different user equipments, the user interface 1130 may also be an interface capable of connecting externally and internally to required equipment, and the connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 1110 is responsible for managing the bus architecture and general processing, and the memory 1120 can store data used by the processor 1110 when performing operations.

Optionally, the processor 1110 may be a CPU (central processor), ASIC (Application Specific Integrated Circuit, Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array, Field Programmable Gate Array) or CPLD (Complex Programmable Logic Device, complex programmable logic device), and the processor can also adopt a multi-core architecture.

The processor is used to execute any one of the methods provided in the embodiments of the present application according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory may also be physically separated.

On the other hand, the embodiments of the present application also provide a processor-readable storage medium, the processor-readable storage medium stores a computer program, and the computer program is used to make the processor execute the above-mentioned embodiments. methods, including:

Receive the motion status information sent by the terminal device;

According to the motion state information, the motion direction of the terminal device in the first beam is predicted to obtain a prediction result, the prediction result includes one or more predicted motion directions, and the first beam currently covers the Beams for terminal equipment;

Perform beam tracking in each of the one or more predicted motion directions according to the set beam tracking scheduling manner.

The processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including but not limited to magnetic storage (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), and semiconductor memory (such as ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state disk (SSD)), etc.

On the other hand, the embodiments of the present application also provide a processor-readable storage medium, the processor-readable storage medium stores a computer program, and the computer program is used to make the processor execute the above-mentioned embodiments. methods, including:

determining motion state information of the terminal device in a first beam, where the first beam is a beam currently covering the terminal device;

Send the motion state information to the network device.

The processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including but not limited to magnetic storage (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), and semiconductor memory (such as ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state disk (SSD)), etc.

Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowcharts and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It should be understood that each procedure and/or block in the flowchart and/or block diagrams, and combinations of procedures and/or blocks in the flowchart and/or block diagrams can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine, such that instructions executed by the processor of the computer or other programmable data processing equipment produce Means for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, such that the instructions stored in the processor-readable memory produce a manufacturing product, the instruction device realizes the functions specified in one or more procedures of the flow chart and/or one or more blocks of the block diagram.

These processor-executable instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented The executed instructions provide steps for implementing the functions specified in the procedure or procedures of the flowchart and/or the block or blocks of the block diagrams.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims (28)

1. A method of beam tracking, comprising:

receiving motion state information sent by terminal equipment;

predicting the motion direction of the terminal equipment in a first beam according to the motion state information to obtain a prediction result, wherein the prediction result comprises one or more predicted motion directions, and the first beam is the beam currently covering the terminal equipment;

and performing beam tracking on each predicted movement direction in the one or more predicted movement directions according to a set beam tracking scheduling mode.

2. The beam tracking method of claim 1, wherein the motion state information comprises one or more of:

longitude and latitude elevation information of the terminal equipment;

speed information of the terminal equipment in different directions;

and the position information of the terminal equipment in the first coordinate system.

3. The beam tracking method according to claim 1 or 2, wherein the predicting the motion direction of the terminal device in the first beam according to the motion state information comprises:

determining the current position of the terminal equipment in the first wave beam according to the motion state information;

predicting a direction of motion of the terminal device within a first beam based on the one or more historical locations of the terminal device and the current location.

4. The method according to claim 1, wherein the performing beam tracking in each of the one or more predicted motion directions according to the set beam tracking scheduling pattern comprises:

determining a second beam for tracking and covering the terminal equipment according to the predicted movement direction;

and tracking and covering the terminal equipment through the second wave beam.

5. The beam tracking method of claim 4, wherein a center point of an overlapping coverage area formed by the second beam and the first beam is a current location of the terminal device.

6. The beam tracking method of claim 4 or 5, further comprising:

determining whether the terminal device operates out of the coverage of the first beam according to the signal strength of the first beam and the link quality of communication with the first beam;

and when the terminal equipment is determined to run out of the coverage range of the first beam, releasing the first beam.

7. The method according to claim 1, wherein the performing beam tracking in each of the one or more predicted motion directions according to the set beam tracking scheduling pattern comprises:

and adjusting the direction of the first beam according to the predicted movement direction, wherein the center point of the adjusted first beam is the current position of the terminal equipment.

8. The method of claim 7, wherein said adjusting the orientation of the first beam based on the predicted direction of motion comprises:

and when the deviation between the current position of the terminal equipment and the central point of the first wave beam is larger than a set angle value, adjusting the central point of the first wave beam to be the current position of the terminal equipment.

9. A method of beam tracking, comprising:

determining motion state information of terminal equipment in a first wave beam, wherein the first wave beam is a wave beam which currently covers the terminal equipment;

and sending the motion state information to network equipment.

10. The beam tracking method of claim 9, wherein the motion state information comprises one or more of:

longitude and latitude elevation information of the terminal equipment;

speed information of the terminal equipment in different directions;

and the position information of the terminal equipment in the first coordinate system.

11. The beam tracking method according to claim 9 or 10, wherein the transmitting the motion state information to the network device comprises:

determining the reporting period of the motion state information;

and sending the motion state information to the network equipment according to the reporting period.

12. The beam tracking method of claim 11, wherein the determining the reporting period of the motion state information comprises:

determining the reporting period according to a first formula; wherein the first formula comprises:

T<R/(|Vu+Vs|×N)

wherein R represents a coverage diameter of the first beam; vu represents the maximum speed of the terminal device; vs represents the satellite maximum velocity; n represents the maximum reporting times of the first beam; and T represents the reporting period.

13. A network device comprising a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under the control of the processor; a processor for reading the computer program in the memory and performing the following operations:

receiving motion state information sent by terminal equipment;

predicting the motion direction of the terminal equipment in a first beam according to the motion state information to obtain a prediction result, wherein the prediction result comprises one or more predicted motion directions, and the first beam is the beam currently covering the terminal equipment;

and performing beam tracking on each predicted movement direction in the one or more predicted movement directions according to a set beam tracking scheduling mode.

14. The network device of claim 13, wherein the motion state information comprises one or more of:

longitude and latitude elevation information of the terminal equipment;

speed information of the terminal equipment in different directions;

and the position information of the terminal equipment in the first coordinate system.

15. The network device according to claim 13 or 14, wherein the predicting the motion direction of the terminal device in the first beam according to the motion state information comprises:

determining the current position of the terminal equipment in the first wave beam according to the motion state information;

and predicting the movement direction of the terminal equipment in the first beam according to one or more historical positions and the current position of the terminal equipment.

16. The network device of claim 13, wherein performing beam tracking in each of the one or more predicted movement directions according to the set beam tracking scheduling pattern comprises:

determining a second beam for tracking and covering the terminal equipment according to the predicted movement direction;

and tracking and covering the terminal equipment through the second wave beam.

17. The network device of claim 16, wherein a center point of an overlapping coverage area formed by the second beam and the first beam is a current location of the terminal device.

18. The network device of claim 16 or 17, further comprising:

determining whether the terminal device operates out of the coverage of the first beam according to the signal strength of the first beam and the quality of a link communicated with the first beam;

and when the terminal equipment is determined to run out of the coverage range of the first beam, releasing the first beam.

19. The network device of claim 13, wherein performing beam tracking in each of the one or more predicted movement directions according to the set beam tracking scheduling pattern comprises:

and adjusting the direction of the first beam according to the predicted movement direction, wherein the center point of the adjusted first beam is the current position of the terminal equipment.

20. The network device of claim 19, wherein the adjusting the orientation of the first beam based on the predicted direction of motion comprises:

and when the deviation between the current position of the terminal equipment and the central point of the first wave beam is larger than a set angle value, adjusting the central point of the first wave beam to be the current position of the terminal equipment.

21. A terminal device, comprising a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under the control of the processor; a processor for reading the computer program in the memory and performing the following operations:

determining motion state information of terminal equipment in a first wave beam, wherein the first wave beam is a wave beam which currently covers the terminal equipment;

and sending the motion state information to network equipment.

22. The terminal device of claim 21, wherein the motion state information comprises one or more of:

longitude and latitude elevation information of the terminal equipment;

speed information of the terminal equipment in different directions;

and the position information of the terminal equipment in the first coordinate system.

23. The terminal device according to claim 21 or 22, wherein said sending the motion state information to the network device comprises:

determining the reporting period of the motion state information;

and sending the motion state information to the network equipment according to the reporting period.

24. The terminal device of claim 23, wherein the determining the reporting period of the motion state information comprises:

determining the reporting period according to a first formula; wherein the first formula comprises:

T<R/(|Vu+Vs|×N)

wherein R represents a coverage diameter of the first beam; vu represents the maximum speed of the terminal device; vs represents the satellite maximum velocity; n represents the maximum reporting times of the first beam; and T represents the reporting period.

25. A beam tracking apparatus, comprising:

the receiving unit is used for receiving the motion state information sent by the terminal equipment;

the prediction unit is configured to predict a motion direction of the terminal device in a first beam according to the motion state information to obtain a prediction result, where the prediction result includes one or more predicted motion directions, and the first beam is a beam currently covering the terminal device;

and the beam tracking unit is used for performing beam tracking on each predicted movement direction in the one or more predicted movement directions according to a set beam tracking scheduling mode.

26. A beam tracking apparatus, comprising:

a determining unit, configured to determine motion state information of a terminal device in a first beam, where the first beam is a beam currently covering the terminal device;

and the sending unit is used for sending the motion state information to the network equipment.

27. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to perform the method of any one of claims 1 to 8.

28. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to perform the method of any of claims 9 to 12.

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