CN113644951A - Data transmission method and equipment - Google Patents

Data transmission method and equipment Download PDF

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Publication number
CN113644951A
CN113644951A CN202010398007.9A CN202010398007A CN113644951A CN 113644951 A CN113644951 A CN 113644951A CN 202010398007 A CN202010398007 A CN 202010398007A CN 113644951 A CN113644951 A CN 113644951A
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China
Prior art keywords
target terminal
information
indication information
scheduling
data transmission
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Granted
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CN202010398007.9A
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CN113644951B (en
Inventor
缪德山
孙韶辉
康绍莉
韩波
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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Priority to CN202010398007.9A priority Critical patent/CN113644951B/en
Priority to PCT/CN2021/076742 priority patent/WO2021227587A1/en
Publication of CN113644951A publication Critical patent/CN113644951A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18513—Transmission in a satellite or space-based system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18519—Operations control, administration or maintenance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application discloses a data transmission method and equipment. In the application, a beam for data transmission is scheduled for a target terminal according to the service requirement of the target terminal; sending beam scheduling indication information to the target terminal, wherein the beam scheduling indication information comprises at least one of a beam index, a frequency band, a cell identifier, a beam direction and service time information of a beam corresponding to the beam; and transmitting or receiving the control information and the data of the target terminal under the beam.

Description

Data transmission method and equipment
Technical Field
The present application relates to the field of wireless communication technologies, and in particular, to a data transmission method and device.
Background
In satellite communication systems, multiple beams or multi-layer beams (the coverage area of one beam in a multi-layer beam may be included in the coverage area of other beams) are typically configured for increased data communication capacity, with different beams being of different frequencies and having mobility. Furthermore, the coverage area of a satellite beam may be much smaller than the area of the desired service, and therefore, how to use the limited beam coverage for data transmission for active users is an important technical problem.
The beam management technique of the terrestrial mobile communication system focuses on the same-frequency beam scanning and beam measurement, and assumes that the beam is fixed and unchanged, while the beam of the satellite communication system is mobile and frequency-changed, so the beam management technique of the terrestrial mobile communication cannot be directly applied to the beam management of the satellite communication system.
Therefore, it is desirable to provide a beam control mechanism for a satellite communication system.
Disclosure of Invention
The embodiment of the application provides a data transmission method and equipment, which are used for realizing beam control in a satellite communication system.
In a first aspect, a data transmission method is provided, including:
scheduling a beam for data transmission for a target terminal according to the service requirement of the target terminal;
sending beam scheduling indication information to the target terminal, wherein the beam scheduling indication information comprises at least one of a beam index, a frequency band, a cell identifier, a beam direction and service time information of a beam corresponding to the beam;
and transmitting or receiving the control information and the data of the target terminal under the beam.
In some embodiments, before scheduling a beam for data transmission for the target terminal, further comprising: transmitting a system broadcast message or a Radio Resource Control (RRC) indication message, the message carrying beam configuration information of at least one beam.
In some embodiments, scheduling beams for data transmission for the target terminal comprises: and acquiring the position information of the terminal, and selecting one beam which is matched with the position of the target terminal in the beam direction and is used for data transmission from the at least one beam.
In some embodiments, the transmitting beam scheduling indication information to the target terminal includes: transmitting a media access control element (MAC CE) or Downlink Control Information (DCI) to the target terminal, wherein at least an index of the beam is carried.
In some embodiments, the service time information of the beam comprises: at least one of an effective start time of the beam, a beam activation duration, and beam activation time pattern information including at least two of an activation period of the beam, a beam activation duration within the activation period, and a duty cycle.
In some embodiments, further comprising: and determining the beam activation duration of the beam activation time pattern information according to at least one of the number and the service state of terminals which are in the same service cell with the target terminal and need to perform data transmission.
In some embodiments, further comprising: controlling a satellite antenna array to transmit beams in a specified frequency band and direction based on at least one item of indication information such as an antenna array index, a beam direction, a frequency band and beam activation time according to beams scheduled for the target terminal; or, according to the beam scheduled for the target terminal, sending a beam control instruction to a satellite processing unit, where the beam control instruction is used to control a satellite antenna array to generate a corresponding beam, and the beam control instruction carries at least one of the following information: antenna array index, beam direction, frequency band, beam activation time; or, according to the beam scheduled for the target terminal, sending a beam control instruction to a satellite beam control module, so that the satellite beam control module sends the beam control instruction to a satellite processing unit, where the beam control instruction is used to control a satellite antenna array to generate a corresponding beam, and the beam control instruction carries at least one of the following information: antenna array index, beam direction, frequency band, beam activation time.
In some embodiments, scheduling a beam for data transmission for a target terminal according to a traffic demand of the target terminal includes: when a scheduling request sent by the target terminal is received, scheduling a beam for data transmission for the target terminal; or when downlink data of the target terminal arrives, scheduling a beam for data transmission for the target terminal.
In some embodiments, the beam corresponds to one cell or one carrier or one fractional Bandwidth (BWP); the beam is designated as a downlink beam or an uplink beam, or comprises a downlink beam and an uplink beam which jointly form a cell.
In a second aspect, a data transmission method is provided, including:
receiving beam scheduling indication information sent by network equipment, wherein the beam scheduling indication information is used for indicating a beam scheduled for a target terminal, and the beam scheduling indication information comprises at least one of a beam index, a frequency band, a cell identifier, a beam direction and service time information of the beam corresponding to the beam;
and receiving or transmitting data and control information on the beam according to the received beam scheduling indication information.
In some embodiments, before receiving the beam scheduling indication information sent by the network device, the method further includes: and receiving a system broadcast message or an RRC indication message sent by the network equipment, wherein the system message carries beam configuration information of at least one beam.
In some embodiments, before receiving the beam scheduling indication information sent by the network device, the method further includes: and sending the position information to the network equipment.
In some embodiments, receiving beam scheduling indication information sent by a network device includes: and receiving the MAC CE or the DCI transmitted by the network equipment, wherein at least the index of the beam is carried.
In some embodiments, the service time information of the beam comprises: at least one of an effective start time of the beam, a beam activation duration, and beam activation time pattern information including at least two of an activation period of the beam, a beam activation duration within the activation period, and a duty cycle.
In some embodiments, receiving beam scheduling indication information sent by a network device includes: and sending a scheduling request to the network equipment, and receiving beam scheduling indication information sent by the network equipment according to the scheduling request, wherein a beam indicated by the beam scheduling indication information is a beam which is allocated to the target terminal by the network equipment and is used for data transmission.
In some embodiments, the beam corresponds to one cell or one carrier or one BWP; the beam is designated as a downlink beam or an uplink beam, or comprises a downlink beam and an uplink beam which jointly form a cell.
In a third aspect, a network device is provided, including:
the processing module is used for scheduling beams for data transmission for a target terminal according to the service requirement of the target terminal;
a sending module, configured to send beam scheduling indication information to the target terminal, where the beam scheduling indication information includes at least one of a beam index, a frequency band, a cell identifier, a beam direction, and service time information of a beam corresponding to the beam; and transmitting control information and data of the target terminal under the beam;
and the receiving module is used for receiving the control information and the data of the target terminal under the wave beam.
In a fourth aspect, a terminal is provided, including:
a receiving module, configured to receive beam scheduling indication information sent by a network device, where the beam scheduling indication information is used to indicate a beam scheduled for a target terminal, and the beam scheduling indication information includes at least one of a beam index, a frequency band, a cell identifier, a beam direction, and service time information of the beam corresponding to the beam; receiving data and control information on the beam according to the received beam scheduling indication information;
and the sending module is used for sending data and control information on the wave beam according to the received wave beam scheduling indication information.
In a fifth aspect, a network device is provided, which includes: a processor, memory, transceiver; the transceiver receives and transmits data under the control of the processor; the memory storing computer instructions; the processor is configured to read the computer instructions to perform the method according to any one of the above first aspects.
In a sixth aspect, a terminal is provided, including: a processor, memory, transceiver; the transceiver receives and transmits data under the control of the processor; the memory storing computer instructions; the processor is configured to read the computer instructions to perform the method according to any one of the second aspects.
In a seventh aspect, there is provided a computer-readable storage medium having stored thereon computer-executable instructions for causing a computer to perform the method of any of the above first aspects.
A computer-readable storage medium having stored thereon computer-executable instructions for causing a computer to perform the method of any of the above second aspects.
In the foregoing embodiment of the present application, the network device may schedule a beam for data transmission for the target terminal according to a service requirement of the target terminal, and send beam scheduling indication information to the target terminal, where the beam scheduling indication information includes at least one of a beam index, a frequency band, a cell identifier, a beam direction, and service time information of the beam corresponding to the beam, so that data transmission may be performed between the network and the terminal on the corresponding beam.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 illustrates a schematic diagram of double-layer coverage of a wide beam and a spot beam in a satellite communication system;
FIG. 2 illustrates a communication mode of a satellite communication system;
fig. 3 is a schematic flowchart illustrating a beam control method implemented on a network side according to an embodiment of the present application;
fig. 4 is a schematic diagram illustrating a first beam service time configuration in an embodiment of the present application;
fig. 5 is a schematic diagram illustrating a second beam service time configuration in the embodiment of the present application;
fig. 6 is a schematic flowchart illustrating a data transmission method implemented on a terminal side according to an embodiment of the present application;
fig. 7 is a schematic structural diagram illustrating a network device provided in an embodiment of the present application;
fig. 8 is a schematic structural diagram schematically illustrating a terminal provided in an embodiment of the present application;
fig. 9 is a schematic structural diagram illustrating a network device according to another embodiment of the present application;
fig. 10 is a schematic structural diagram of a terminal according to another embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Some terms in the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.
(1) In the embodiments of the present application, the terms "network" and "system" are often used interchangeably, but those skilled in the art can understand the meaning.
(2) In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.
(3) "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
(4) The network device is a device for providing a wireless communication function for the terminal, and includes but is not limited to: a gbb in 5G, a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved node B or home node B, HNB), a BaseBand Unit (BBU), a transmission point (TRP), a Transmission Point (TP), a mobile switching center (msc), and the like. The base station in the present application may also be a device that provides a terminal with a wireless communication function in other communication systems that may appear in the future.
(5) A terminal is a device that can provide voice and/or data connectivity to a user. For example, the terminal device includes a handheld device, an in-vehicle device, and the like having a wireless connection function. Currently, the terminal device may be: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self-driving (self-driving), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), or a wireless terminal in smart home (smart home), etc.
(6) A beam may correspond to a cell or a carrier or a fractional Bandwidth (BWP). In the NR cell, the bandwidths of different BWPs are different, the configuration parameters of other physical layer channels/signals of each BWP are usually configured independently, and the network device may configure different BWPs to the terminal, so that the uplink and downlink bandwidths used by the terminal are variable.
One beam may be designated as a downlink beam or an uplink beam, or one beam includes a downlink beam and an uplink beam and the downlink beam and the uplink beam jointly form a cell.
In a satellite communication system, a beam forming mode mainly includes a fixed beam and a dynamic beam, the fixed beam is a beam of a satellite serving a ground UE (User Equipment, also called a terminal) according to a fixed direction, and does not change the beam direction along with the position and movement of the UE, the fixed beam is generally wide, the coverage area is large, and the fixed beam is also called a wide beam; the dynamic beam can control the beam direction based on the position of the UE, the beam is narrow, the coverage area is small, the gain is large, and the dynamic beam is also called as a spot beam.
Fig. 1 illustrates a schematic diagram of a double coverage of a wide beam and a spot beam in a satellite communication system. The cell corresponds to the coverage of the wide beam, the areas 2 and 3 correspond to the coverage of the spot beam, and the coverage of the wide beam and the spot beam is shown in the figure. Region 2 corresponds to the coverage of the user plane high speed transmission beam 1 (i.e., spot beam 1) within the cell, and region 3 corresponds to the coverage of the user plane high speed transmission beam 2 (i.e., spot beam 2) within the cell. Wherein region 2 and region 3 may correspond to a partial band of the wide Beam (BWP), i.e. belong to serving cell 1; the area 2 and the area 3 can also correspond to a spot beam cell, the coverage range of a wide beam is larger, the coverage range of a spot beam is smaller, and the spot beam is used for data enhancement and can be accurately projected to the served UE.
The embodiment of the application provides a beam control method, a data transmission method based on the beam control method and related equipment. According to the method and the device, based on the service requirement and the position information of the terminal, the network device dynamically adjusts the satellite beam and indicates the relevant information of the satellite beam to the terminal, so that the terminal is connected to the corresponding beam for data transmission based on the satellite beam information indicated by the network side.
The embodiments of the present application are applicable to a satellite communication system, and the "network device" in the embodiments of the present application may be a device such as a ground gateway station of a satellite, or a satellite configured with a base station function. A terrestrial gateway station is a network device with a base station function, which is used to provide access and data transmission services for users.
The transmission modes in the satellite communication system include a bent pipe communication mode and a regenerative communication mode, as shown in fig. 2. Referring to fig. 2 (a), in the bent pipe communication mode, the transmission link is divided into two parts, the link from the terminal to the satellite is called a user link or a service link, the link from the satellite to the ground gateway station is called a feeder link, the satellite only performs transparent forwarding processing, and beam management of the satellite needs to be performed through a separate control module (or called a satellite processing unit). Referring to (b) of fig. 2, in the regenerative communication mode, the satellite corresponds to a base station, the terminal directly communicates data with the satellite base station, and the beam of the satellite is directly controlled by the satellite base station.
Embodiments of the present application are described below with reference to the drawings.
Referring to fig. 3, a schematic flow chart of a beam control method implemented at a network side according to an embodiment of the present application is provided, where the flow may be executed by a network device, and the network device may be a gateway station in a bent pipe communication mode in a satellite communication system, or a satellite configured with a base station function in a regenerative communication mode in the satellite communication system.
As shown, the method may include:
s301: and the network equipment schedules the beam for data transmission for the target terminal according to the service requirement of the target terminal.
In the embodiment of the application, the network side can perform beam scheduling for the target terminal based on the service requirement of the target terminal. In terms of uplink transmission, the target terminal may be a terminal that initiates a scheduling request; in terms of downlink transmission, the target terminal may be a receiving terminal of downlink data.
Specifically, in an uplink transmission scene, when a target terminal has uplink data to send or needs to perform service transmission, a scheduling request is sent to a network device; when receiving a scheduling request sent by a target terminal, the network equipment allocates a beam for data transmission to the target terminal. In a downlink transmission scenario, when downlink data which needs to be sent to a target terminal arrives at a network side, a beam for data transmission is allocated to the target terminal.
In some embodiments, the network device may schedule a beam with a beam direction matching the location of the target terminal to the target terminal for data transmission.
In some embodiments, the beam scheduled by the network device to the terminal is a spot beam, and the coverage area of the spot beam is small, so that the spot beam is used for data enhancement, can be accurately projected to the served terminal, and ensures the data transmission performance between the terminal and the terminal.
In some embodiments, the beam for providing the access connection for the terminal by the network device is a wide beam, the wide beam has a large coverage area, can provide the access service of the user, and is used for maintaining the handover and cell selection of the terminal, so that the terminal can always reside or be connected in the network, when the terminal has an uplink data transmission requirement, the terminal can transmit a scheduling request to the network, and then the network performs configuration and scheduling of the spot beam.
In some embodiments, if the scheduled beam corresponds to a BWP, the network device directly allocates the BWP to the target terminal; if the scheduled beam corresponds to a carrier cell, the network device needs to activate the carrier cell, i.e. set the status of the carrier cell to an activated status.
S302: the network equipment transmits beam scheduling indication information to the target terminal, wherein the beam scheduling indication information comprises at least one item of beam index (beam ID), frequency band, cell identification (cell ID), beam direction and service time information of the beam corresponding to the beam.
Further, the above fig. 3 may further include the following steps:
s303: the network device transmits or receives control information and data of a target terminal in the beam, thereby providing a data transmission service for the target terminal. For example, uplink data transmitted by the terminal on the beam is received, or downlink data is transmitted to the terminal on the beam.
In some embodiments, the service time information of the beam may include at least one of an effective start time of the beam, a beam activation duration, and beam activation time pattern information (pattern). Wherein the beam activation time pattern information includes at least two of an activation period of the beam, a beam activation duration within the activation period, and a duty cycle of the beam activation duration within the activation period. The active time period of a beam indicated by the active time pattern typically comprises a plurality of discrete time periods.
Specifically, the configuration of the service time of the beam may be divided into two configurations, where in the first configuration, the activation time of the beam may be indicated to the terminal by the effective start time of the beam and the beam activation duration, and in the second configuration, the activation time of the beam may be indicated to the terminal by the effective start time of the beam and the beam activation time pattern.
For the first beam service time configuration mode, the following situations may be specifically included:
case 1: the service time information of the beam may only include the beam activation duration, and the effective starting time of the beam may be set by default, for example, the effective starting time of the beam may be set to be the time when the terminal receives the beam scheduling indication information, or may be set to take effect after the terminal receives the beam scheduling indication information by a fixed delay time. In this way, the terminal may determine the activation time length of the beam, i.e., the time length for data transmission using the beam, according to the default set beam validation start time and the beam activation duration configured by the network.
Case 2: the service time information of the beam may only include the effective starting time of the beam, and the beam activation duration may be set by default, for example, a fixed time length may be set, during which the beam is activated, or may be set to be activated after the beam is effective until a beam stop command sent by the network device is received. In this way, the terminal may determine the activation time length of the beam according to the beam effective start time configured by the network and the beam activation duration of the default configuration, that is, the time length for data transmission using the beam.
Case 3: the service time information of the beam may include an effective start time of the beam and a beam activation duration. In this way, the terminal may determine the activation time length of the beam, i.e., the time length for data transmission using the beam, according to the beam effective start time and the beam activation duration configured by the network.
Fig. 4 is a diagram illustrating a first beam service time configuration. As shown in the figure, at time T1, the terminal receives the signaling carrying the beam scheduling indication information sent by the network device, and at time T2, the beam indicated by the network device starts to take effect. Depending on the activation duration of the beam, at time T3, the activation duration of the beam arrives and the beam ceases to be activated. Wherein, the terminal may transmit data on the beam from time T2 to time T3.
For the second beam service time configuration mode, the following situations may be specifically included:
case 4: the service time information of the beam may include only beam activation time pattern information, and the effective start time of the beam may be set by default. In this way, the terminal may determine the activation time period of the beam according to the default beam effective start time and the beam activation time pattern configured by the network, so that data transmission may be performed using the beam.
Case 5: the service time information of the beam may include an effective start time of the beam and beam activation time pattern information. In this way, the terminal may determine the activation time period of the beam according to the beam effective start time and the beam activation time pattern configured by the network, so that data transmission may be performed using the beam.
Fig. 5 is a diagram illustrating a second beam service time configuration. As shown in the figure, at time T1, the terminal receives the signaling carrying the beam scheduling indication information sent by the network device, and at time T2, the beam indicated by the network device starts to take effect. According to the activation time pattern of the beam, at time T3 in the first activation period, the beam arrives at the activation duration in the activation period, at time T4, the beam starts to enter the second activation period, and from time T4 to time T5 in the second activation period, the activation time of the beam in the activation period.
The two beam service time configuration modes can be selected and used according to needs. For example, in a scenario where the number of spot beams is small but the number of terminals needing service is large, the second beam service time allocation manner may be adopted, so that different terminals use the beam in a time-sharing manner. During the inactive time period in the beam active period, the beam is in a dormant state from the perspective of a certain terminal or certain terminals, and the beam is time-division multiplexed in different directions from the perspective of the satellite antenna array to serve another certain user or certain users in different direction positions.
In some embodiments of the present application, when allocating a beam for data transmission to a target terminal, a network device may determine an activation duration of the beam allocated to the target terminal, for example, determine a beam activation duration of beam activation time pattern information, according to at least one of a number of terminals that are in a same serving cell as the target terminal and need to perform data transmission, and a traffic state.
The service status may include at least one of a type of service performed by the terminal and an amount of data that the terminal needs to transmit. The serving cell may be a cell for the wide beam.
For example, if a large number of terminals in the area where the target terminal is located need to perform data transmission, a longer beam activation duration is configured for the target terminal and other terminals in the serving cell that need to perform data transmission. For another example, if the amount of data that the target terminal needs to transmit is large, a long beam activation duration may be configured for the target terminal to ensure data transmission.
In some embodiments of the present application, the network device may send the beam scheduling indication information to the terminal through a high-layer signaling or a dynamic signaling.
The higher layer signaling may be Radio Resource Control (RRC) signaling, and the dynamic signaling may be Media Access Control Element (MAC CE) or Downlink Control Information (Downlink, Control Information, DCI).
The beam scheduling indication information notified using the MAC CE or the DCI may carry fewer parameters than the beam scheduling indication information notified using the RRC signaling. For example, the beam scheduling indication information notified by using RRC signaling is complete beam configuration information including a beam ID, a frequency band, a cell ID, a beam direction, a beam service time, and the like, and the beam scheduling indication information notified by using MAC CE or DCI may include only the beam ID or further include the beam service time information, and the like.
In some embodiments of the present application, the network device configures a wide beam for user initial access and broadcasts configuration information of one or more spot beams through a system message or notifies the terminal of the configuration information of the one or more spot beams through an RRC indication message, wherein the configuration information of the spot beams includes a beam ID, a frequency band, a cell ID, a beam direction, and the like. After connecting to the wide beam, the terminal needs to listen to the spot beam configuration information of the network. When the network equipment receives a service request of a terminal or downlink data of the terminal arrives, the position of the target terminal is obtained, a beam with the beam direction matched with the position of the terminal is selected from spot beams configured through system information, MAC CE or DCI is sent to the target terminal, wherein the MAC CE or DCI carries the index of the beam and can further carry service time information of the beam, and the beam used for data transmission is configured for the terminal through dynamic signaling.
In the embodiment of the application, two beam control generation modes are provided according to a communication mode adopted by a satellite communication system, and are respectively applied to a bent pipe communication mode and a regeneration communication mode.
In the regenerative communication mode, the base station is disposed on the satellite, and the base station can directly control the satellite antenna array to generate the required beam. Specifically, the beam control generation method suitable for the regenerative communication mode may include: and controlling the satellite antenna array to transmit the beam in the specified frequency band and direction based on at least one item of indication information such as antenna array index, beam direction, frequency band and beam service time according to the beam scheduled for the target terminal.
In some embodiments, the base station generates beam control information to maintain synchronization between the terminal and the network while configuring the beam scheduling indication information for the terminal, and the beam control information may include an antenna array index, a beam direction, a frequency band, a beam service time, and the like for controlling the antenna array to generate a corresponding beam.
In general, there are multiple arrays of satellite antennas, each of which can generate beams in multiple directions, so that the beam steering information includes antenna array indexes and beam directions, so that beams in corresponding directions can be generated by corresponding antenna arrays. If the frequency or frequency band of the beam has multiple choices, a frequency indication switch can be set and carried by the beam control information, so that the antenna array can generate the beam of the corresponding frequency or frequency band according to the indication information.
In the bent pipe communication mode, the base station (or gateway station) is separated from the satellite, and the base station can send a beam control command to the satellite processing unit, or send satellite beam configuration information to the satellite processing unit through the satellite beam control module, and the satellite processing unit generates a corresponding beam. Wherein, the beam control command comprises at least one of the following information: antenna array index, beam direction, frequency band, beam service time.
Specifically, in the bent-tube communication mode, the following beam control generation manner may be adopted:
mode 1: and sending a beam control instruction to the satellite processing unit according to the beam scheduled for the target terminal, and controlling the satellite antenna array to generate a corresponding beam after the satellite processing unit receives the instruction.
Mode 2: and according to the wave beam scheduled for the target terminal, sending a wave beam control instruction to the satellite wave beam control module, so that the satellite wave beam control module sends the wave beam control instruction to the satellite processing unit, and the satellite processing unit controls the satellite antenna array to generate a corresponding wave beam.
In the bent-tube communication mode, since the beam control command needs to be sent to the satellite processing unit on the satellite, the effective start time of the beam needs to take into account the delay of the beam command transmitted over the air.
Referring to fig. 6, a schematic flowchart of a data transmission method at a terminal side according to an embodiment of the present application is shown, where the flowchart may include:
s601: the target terminal receives beam scheduling indication information sent by the network equipment, wherein the beam scheduling indication information is used for indicating beams scheduled for the target terminal.
The contents and transmission method of the beam scheduling indication information are the same as those in the foregoing embodiments, and are not repeated again.
S602: and the target terminal receives or transmits data and control information on the wave beam according to the received wave beam scheduling indication information.
In the embodiment of the application, the network side can perform beam scheduling for the target terminal based on the service requirement of the target terminal. In terms of uplink transmission, the target terminal may be a terminal that initiates a scheduling request; in terms of downlink transmission, the target terminal may be a receiving terminal of downlink data.
Specifically, in an uplink transmission scene, when a target terminal has uplink data to send or needs to perform service transmission, a scheduling request is sent to a network device; when receiving a scheduling request sent by a target terminal, the network equipment allocates a beam for data transmission to the target terminal. In a downlink transmission scenario, when downlink data which needs to be sent to a target terminal arrives at a network side, a beam for data transmission is allocated to the target terminal.
In some embodiments of the present application, the network device configures the wide beam for user initial access and indicates configuration information of one or more spot beams through system message broadcast or RRC message, wherein the configuration information of the spot beams includes beam ID, frequency band, cell ID, beam direction, and the like. After connecting to the wide beam, the terminal needs to listen to the spot beam configuration information of the network.
In some embodiments, the terminal may further send location information to the network device, so that the network device allocates a beam for data transmission to the terminal according to the location of the terminal.
In some scenarios, when a terminal detects that uplink data needs to be sent, a service request or an uplink data scheduling request is sent to a network device, so as to trigger the network device to allocate a beam for data transmission to the terminal, and notify configuration information of the beam. If the beam allocated to the terminal by the network side corresponds to one BWP, the terminal directly performs Uplink Physical Uplink Shared Channel (PUSCH) transmission based on the received beam scheduling indication information, and the terminal performs beam connection in a BWP switching manner. If the wave beam allocated to the terminal by the network side corresponds to a carrier cell, the terminal needs to acquire carrier information to complete downlink synchronization, if the timing relationship changes, the terminal also needs to send an uplink Physical Random Access Channel (PRACH) to perform uplink synchronization, then monitors the scheduling indication information of the network, and sends an uplink PUSCH data packet, and at this time, the terminal performs wave beam connection by using an auxiliary carrier activation mechanism.
In other scenarios, when downlink data sent to a target terminal by a network side arrives, a beam for data transmission is allocated to the target terminal, and configuration information of the beam is sent to the target terminal. If the network side performs beam configuration in the BWP manner, the network side may directly indicate the BWP ID corresponding to the beam allocated to the terminal on the MAC CE or on a Physical Downlink Control Channel (PDCCH) (i.e., send DCI), and the terminal receives Downlink data in the BWP. If the network side performs the beam configuration in a cell mode, the network side may activate the beam and notify the terminal first, and the terminal detects the downlink control channel and the data channel after the beam is synchronized, and starts to perform data transceiving.
In some embodiments of the present application, the terminal may further autonomously select one beam from a plurality of beams configured by the network side through the system message for connection, and perform data transmission.
As can be seen from the foregoing description, in the foregoing embodiments of the present application, a network device may schedule a beam for data transmission for a target terminal according to a service requirement of the target terminal, and send beam scheduling indication information to the target terminal, where the beam scheduling indication information includes at least one of a beam index, a frequency band, a cell identifier, a beam direction, and service time information of the beam corresponding to the beam, so that data transmission may be performed between the network and the terminal on the corresponding beam.
Based on the same technical concept, the embodiment of the application also provides the network equipment. The network device may implement the functions of the network device side in the foregoing embodiments.
Fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present application. The network device may include: a processing module 701, a sending module 702, and a receiving module 703.
A processing module 701, configured to schedule a beam for data transmission for a target terminal according to a service requirement of the target terminal;
a sending module 702, configured to send beam scheduling indication information to the target terminal, where the beam scheduling indication information includes at least one of a beam index, a frequency band, a cell identifier, a beam direction, and service time information of a beam corresponding to the beam; and transmitting control information and data of the target terminal under the beam;
a receiving module 703, configured to receive control information and data of the target terminal under the beam.
In some embodiments, the processing module 701 is further configured to: before scheduling a beam for data transmission for the target terminal, a system broadcast message or an RRC indication message is sent through the sending module 702, where the message carries beam configuration information of at least one beam.
In some embodiments, the processing module 701 may be specifically configured to: and acquiring the position information of the terminal, and selecting one beam which is matched with the position of the target terminal in the beam direction and is used for data transmission from the at least one beam.
In some embodiments, the sending module 702 may be specifically configured to: and sending the MAC CE or the DCI to the target terminal, wherein at least the index of the beam is carried.
In some embodiments, the service time information of the beam comprises: at least one of an effective start time of the beam, a beam activation duration, and beam activation time pattern information including at least two of an activation period of the beam, a beam activation duration within the activation period, and a duty cycle.
In some embodiments, the processing module 701 is further configured to: and determining the beam activation duration of the beam activation time pattern information according to at least one of the number and the service state of terminals which are in the same service cell with the target terminal and need to perform data transmission.
In some embodiments, the processing module 701 is further configured to: controlling a satellite antenna array to transmit beams in a specified frequency band and direction based on at least one item of indication information such as an antenna array index, a beam direction, a frequency band and beam activation time according to beams scheduled for the target terminal; or, according to the beam scheduled for the target terminal, sending a beam control instruction to a satellite processing unit, where the beam control instruction is used to control a satellite antenna array to generate a corresponding beam, and the beam control instruction carries at least one of the following information: antenna array index, beam direction, frequency band, beam activation time; or, according to the beam scheduled for the target terminal, sending a beam control instruction to a satellite beam control module, so that the satellite beam control module sends the beam control instruction to a satellite processing unit, where the beam control instruction is used to control a satellite antenna array to generate a corresponding beam, and the beam control instruction carries at least one of the following information: antenna array index, beam direction, frequency band, beam activation time.
In some embodiments, the processing module 701 is specifically configured to: when a scheduling request sent by the target terminal is received, scheduling a beam for data transmission for the target terminal; or when downlink data of the target terminal arrives, scheduling a beam for data transmission for the target terminal.
It should be noted that, the network device provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are not repeated herein.
Based on the same technical concept, the embodiment of the application also provides a terminal. The terminal can implement the functions of the terminal side in the foregoing embodiments.
Fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present application. The network device may include: a processing module 801, a sending module 802 and a receiving module 803.
A receiving module 803, configured to receive beam scheduling indication information sent by a network device, where the beam scheduling indication information is used to indicate a beam scheduled for a target terminal, and the beam scheduling indication information includes at least one of a beam index, a frequency band, a cell identifier, a beam direction, and service time information of the beam corresponding to the beam; receiving data and control information on the beam according to the received beam scheduling indication information;
a sending module 802, configured to send data and control information on the beam according to the received beam scheduling indication information.
In some embodiments, the receiving module 803 is further configured to: before receiving beam scheduling indication information sent by network equipment, receiving a system broadcast message or an RRC indication message sent by the network equipment, wherein the system message carries beam configuration information of at least one beam.
In some embodiments, the sending module 802 is further configured to: before receiving beam scheduling indication information sent by network equipment, sending position information to the network equipment.
In some embodiments, the receiving module 803 is specifically configured to: and receiving the MAC CE or the DCI transmitted by the network equipment, wherein at least the index of the beam is carried.
In some embodiments, the service time information of the beam comprises: at least one of an effective start time of the beam, a beam activation duration, and beam activation time pattern information including at least two of an activation period of the beam, a beam activation duration within the activation period, and a duty cycle.
In some embodiments, after the sending module 802 sends the scheduling request to the network device, the receiving module 803 receives beam scheduling indication information sent by the network device according to the scheduling request, where a beam indicated by the beam scheduling indication information is a beam allocated by the network device for the target terminal to perform data transmission.
It should be noted that, the terminal provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.
Based on the same technical concept, the embodiment of the application also provides the network equipment. The network device may implement the functions of the network device side in the foregoing embodiments.
Fig. 9 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown, the network device may include: a processor 901, a memory 902, a transceiver 903, and a bus interface 904.
The processor 901 is responsible for managing a bus architecture and general processing, and the memory 902 may store data used by the processor 901 in performing operations. The transceiver 903 is used for receiving and transmitting data under the control of the processor 901.
The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 901, and various circuits, represented by memory 902, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 901 is responsible for managing a bus architecture and general processing, and the memory 902 may store data used by the processor 901 in performing operations.
The process disclosed in the embodiment of the present application may be applied to the processor 901, or implemented by the processor 901. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 901. The processor 901 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 902, and the processor 901 reads the information in the memory 902, and completes the steps of the signal processing flow in combination with the hardware thereof.
Specifically, the processor 901 is configured to read the computer instructions in the memory 902 and execute the functions implemented by the network device in the flow shown in fig. 3.
Specifically, the processor 901 can read the computer instructions in the memory 902 to perform the following operations: scheduling a beam for data transmission for a target terminal according to the service requirement of the target terminal; sending beam scheduling indication information to the target terminal, wherein the beam scheduling indication information comprises at least one of a beam index, a frequency band, a cell identifier, a beam direction and service time information of a beam corresponding to the beam; and transmitting or receiving the control information and the data of the target terminal under the beam.
It should be noted that, the network device provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are not repeated herein.
Based on the same technical concept, the embodiment of the application also provides a terminal. The terminal can implement the functions of the terminal side in the foregoing embodiments.
Referring to fig. 10, a schematic structural diagram of a terminal provided in the embodiment of the present application is shown. As shown, the terminal may include: a processor 1001, a memory 1002, a transceiver 1003, and a bus interface 1004.
The processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1002 may store data used by the processor 1001 in performing operations. The transceiver 1003 is used for receiving and transmitting data under the control of the processor 1001.
The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 1001, and various circuits, represented by the memory 1002, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1002 may store data used by the processor 1001 in performing operations.
The processes disclosed in the embodiments of the present application may be applied to the processor 1001, or implemented by the processor 1001. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 1001. The processor 1001 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, may implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1002, and the processor 1001 reads the information in the memory 1002 and completes the steps of the signal processing flow in combination with the hardware thereof.
Specifically, the processor 1001 is configured to read the computer instructions in the memory 1002 and execute the functions implemented by the network device in the flowchart shown in fig. 6.
In particular, the processor 1001 may read the computer instructions in the memory 1002 to perform the following operations: receiving beam scheduling indication information sent by network equipment, wherein the beam scheduling indication information is used for indicating a beam scheduled for a target terminal, and the beam scheduling indication information comprises at least one of a beam index, a frequency band, a cell identifier, a beam direction and service time information of the beam corresponding to the beam; and receiving or transmitting data and control information on the beam according to the received beam scheduling indication information.
It should be noted that, the terminal provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.
Embodiments of the present application further provide a computer-readable storage medium, where computer-executable instructions are stored, and the computer-executable instructions are used to enable a computer to execute the method performed by the network device in the foregoing embodiments.
The embodiment of the present application further provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and the computer-executable instructions are used to enable a computer to execute the method executed by the terminal in the foregoing embodiment.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. 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, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (36)

1. A method of data transmission, comprising:
scheduling a beam for data transmission for a target terminal according to the service requirement of the target terminal;
sending beam scheduling indication information to the target terminal, wherein the beam scheduling indication information comprises at least one of a beam index, a frequency band, a cell identifier, a beam direction and service time information of a beam corresponding to the beam;
and transmitting or receiving the control information and the data of the target terminal under the beam.
2. The method of claim 1, wherein prior to scheduling beams for data transmission for the target terminal, further comprising:
and sending a system broadcast message or a Radio Resource Control (RRC) indication message, wherein the message carries the beam configuration information of at least one beam.
3. The method of claim 2, wherein scheduling beams for data transmission for the target terminal comprises:
and acquiring the position information of the terminal, and selecting one beam which is matched with the position of the target terminal in the beam direction and is used for data transmission from the at least one beam.
4. The method of claim 2, wherein transmitting beam scheduling indication information to the target terminal comprises:
and sending a Media Access Control (MAC) Control Element (CE) or Downlink Control Information (DCI) to the target terminal, wherein at least the index of the beam is carried.
5. The method of claim 1, wherein the serving time information for the beam comprises:
at least one of an effective start time of the beam, a beam activation duration, and beam activation time pattern information including at least two of an activation period of the beam, a beam activation duration within the activation period, and a duty cycle.
6. The method of claim 5, further comprising:
and determining the beam activation duration of the beam activation time pattern information according to at least one of the number and the service state of terminals which are in the same service cell with the target terminal and need to perform data transmission.
7. The method of claim 1, further comprising:
controlling a satellite antenna array to transmit beams in a specified frequency band and direction based on at least one item of indication information such as an antenna array index, a beam direction, a frequency band and beam activation time according to beams scheduled for the target terminal; or
Sending a beam control instruction to a satellite processing unit according to the beam scheduled for the target terminal, wherein the beam control instruction is used for controlling a satellite antenna array to generate a corresponding beam, and the beam control instruction carries at least one of the following information: antenna array index, beam direction, frequency band, beam activation time; or
According to the beam scheduled for the target terminal, a beam control instruction is sent to a satellite beam control module, so that the satellite beam control module sends the beam control instruction to a satellite processing unit, the beam control instruction is used for controlling a satellite antenna array to generate a corresponding beam, and the beam control instruction carries at least one of the following information: antenna array index, beam direction, frequency band, beam activation time.
8. The method of claim 1, wherein scheduling beams for data transmission for a target terminal based on a traffic demand of the target terminal comprises:
when a scheduling request sent by the target terminal is received, scheduling a beam for data transmission for the target terminal; or
And when downlink data of the target terminal arrives, scheduling a beam for data transmission for the target terminal.
9. The method according to any of claims 1-8, wherein the beam corresponds to one cell or one carrier or one fractional bandwidth BWP; the beam is designated as a downlink beam or an uplink beam, or comprises a downlink beam and an uplink beam which jointly form a cell.
10. A method of data transmission, comprising:
receiving beam scheduling indication information sent by network equipment, wherein the beam scheduling indication information is used for indicating a beam scheduled for a target terminal, and the beam scheduling indication information comprises at least one of a beam index, a frequency band, a cell identifier, a beam direction and service time information of the beam corresponding to the beam;
and receiving or transmitting data and control information on the beam according to the received beam scheduling indication information.
11. The method of claim 10, wherein before receiving the beam scheduling indication information transmitted by the network device, further comprising:
and receiving a system broadcast message or a Radio Resource Control (RRC) indication message sent by the network equipment, wherein the system message carries beam configuration information of at least one beam.
12. The method of claim 10, wherein before receiving the beam scheduling indication information transmitted by the network device, further comprising:
and sending the position information to the network equipment.
13. The method of claim 10, wherein receiving beam scheduling indication information transmitted by a network device comprises:
and receiving a media access control element (MAC CE) or Downlink Control Information (DCI) sent by the network equipment, wherein at least the index of the beam is carried.
14. The method of claim 10, wherein the service time information of the beam comprises:
at least one of an effective start time of the beam, a beam activation duration, and beam activation time pattern information including at least two of an activation period of the beam, a beam activation duration within the activation period, and a duty cycle.
15. The method of claim 10, wherein receiving beam scheduling indication information transmitted by a network device comprises:
and sending a scheduling request to the network equipment, and receiving beam scheduling indication information sent by the network equipment according to the scheduling request, wherein a beam indicated by the beam scheduling indication information is a beam which is allocated to the target terminal by the network equipment and is used for data transmission.
16. The method according to any of claims 10-15, wherein the beam corresponds to one cell or one carrier or one fractional bandwidth BWP; the beam is designated as a downlink beam or an uplink beam, or comprises a downlink beam and an uplink beam which jointly form a cell.
17. A network device, comprising: a processor, memory, transceiver;
the transceiver receives and transmits data under the control of the processor;
the memory storing computer instructions;
the processor is used for reading the computer instructions and executing the following operations:
scheduling a beam for data transmission for a target terminal according to the service requirement of the target terminal;
sending beam scheduling indication information to the target terminal, wherein the beam scheduling indication information comprises at least one of a beam index, a frequency band, a cell identifier, a beam direction and service time information of a beam corresponding to the beam;
and transmitting or receiving the control information and the data of the target terminal under the beam.
18. The network device of claim 17, wherein prior to scheduling a beam for data transmission for the target terminal, further comprising:
and sending a system broadcast message or a Radio Resource Control (RRC) indication message, wherein the message carries the beam configuration information of at least one beam.
19. The network device of claim 18, wherein scheduling beams for data transmission for the target terminal comprises:
and acquiring the position information of the terminal, and selecting one beam which is matched with the position of the target terminal in the beam direction and is used for data transmission from the at least one beam.
20. The network device of claim 18, wherein transmitting beam scheduling indication information to the target terminal comprises:
and sending a Media Access Control (MAC) Control Element (CE) or Downlink Control Information (DCI) to the target terminal, wherein at least the index of the beam is carried.
21. The network device of claim 17, wherein the service time information of the beam comprises:
at least one of an effective start time of the beam, a beam activation duration, and beam activation time pattern information including at least two of an activation period of the beam, a beam activation duration within the activation period, and a duty cycle.
22. The network device of claim 21, wherein the operations further comprise:
and determining the beam activation duration of the beam activation time pattern information according to at least one of the number and the service state of terminals which are in the same service cell with the target terminal and need to perform data transmission.
23. The network device of claim 17, wherein the operations further comprise:
controlling a satellite antenna array to transmit beams in a specified frequency band and direction based on at least one item of indication information such as an antenna array index, a beam direction, a frequency band and beam activation time according to beams scheduled for the target terminal; or
Sending a beam control instruction to a satellite processing unit according to the beam scheduled for the target terminal, wherein the beam control instruction is used for controlling a satellite antenna array to generate a corresponding beam, and the beam control instruction carries at least one of the following information: antenna array index, beam direction, frequency band, beam activation time; or
According to the beam scheduled for the target terminal, a beam control instruction is sent to a satellite beam control module, so that the satellite beam control module sends the beam control instruction to a satellite processing unit, the beam control instruction is used for controlling a satellite antenna array to generate a corresponding beam, and the beam control instruction carries at least one of the following information: antenna array index, beam direction, frequency band, beam activation time.
24. The network device of claim 17, wherein scheduling beams for data transmission for a target terminal based on a traffic demand of the target terminal comprises:
when a scheduling request sent by the target terminal is received, scheduling a beam for data transmission for the target terminal; or
And when downlink data of the target terminal arrives, scheduling a beam for data transmission for the target terminal.
25. The network device according to any of claims 17-24, wherein the beam corresponds to one cell or one carrier or one fractional bandwidth BWP; the beam is designated as a downlink beam or an uplink beam, or comprises a downlink beam and an uplink beam which jointly form a cell.
26. A terminal, comprising: a processor, memory, transceiver;
the transceiver receives and transmits data under the control of the processor;
the memory storing computer instructions;
the processor is used for reading the computer instructions and executing the following operations:
receiving beam scheduling indication information sent by network equipment, wherein the beam scheduling indication information is used for indicating a beam scheduled for a target terminal, and the beam scheduling indication information comprises at least one of a beam index, a frequency band, a cell identifier, a beam direction and service time information of the beam corresponding to the beam;
and receiving or transmitting data and control information on the beam according to the received beam scheduling indication information.
27. The terminal of claim 26, wherein the operations further comprise:
before receiving beam scheduling indication information sent by network equipment, receiving a system broadcast message or a Radio Resource Control (RRC) indication message sent by the network equipment, wherein the system message carries beam configuration information of at least one beam.
28. The terminal of claim 26, wherein the operations further comprise:
before receiving beam scheduling indication information sent by network equipment, sending position information to the network equipment.
29. The terminal of claim 26, wherein receiving the beam scheduling indication information transmitted by the network device comprises:
and receiving a media access control element (MAC CE) or Downlink Control Information (DCI) sent by the network equipment, wherein at least the index of the beam is carried.
30. The terminal of claim 26, wherein the service time information of the beam comprises:
at least one of an effective start time of the beam, a beam activation duration, and beam activation time pattern information including at least two of an activation period of the beam, a beam activation duration within the activation period, and a duty cycle.
31. The terminal of claim 26, wherein receiving the beam scheduling indication information transmitted by the network device comprises:
and sending a scheduling request to the network equipment, and receiving beam scheduling indication information sent by the network equipment according to the scheduling request, wherein a beam indicated by the beam scheduling indication information is a beam which is allocated to the target terminal by the network equipment and is used for data transmission.
32. The terminal according to any of claims 26-31, wherein the beam corresponds to one cell or one carrier or one fractional bandwidth BWP; the beam is designated as a downlink beam or an uplink beam, or comprises a downlink beam and an uplink beam which jointly form a cell.
33. A network device, comprising:
the processing module is used for scheduling beams for data transmission for a target terminal according to the service requirement of the target terminal;
a sending module, configured to send beam scheduling indication information to the target terminal, where the beam scheduling indication information includes at least one of a beam index, a frequency band, a cell identifier, a beam direction, and service time information of a beam corresponding to the beam; and transmitting control information and data of the target terminal under the beam;
and the receiving module is used for receiving the control information and the data of the target terminal under the wave beam.
34. A terminal, comprising:
a receiving module, configured to receive beam scheduling indication information sent by a network device, where the beam scheduling indication information is used to indicate a beam scheduled for a target terminal, and the beam scheduling indication information includes at least one of a beam index, a frequency band, a cell identifier, a beam direction, and service time information of the beam corresponding to the beam; receiving data and control information on the beam according to the received beam scheduling indication information;
and the sending module is used for sending data and control information on the wave beam according to the received wave beam scheduling indication information.
35. A computer-readable storage medium having stored thereon computer-executable instructions for causing a computer to perform the method of any one of claims 1-9.
36. A computer-readable storage medium having stored thereon computer-executable instructions for causing a computer to perform the method of any one of claims 16.
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