WO2023035585A1

WO2023035585A1 - Networking method for scatter communication, central station, peripheral station and scatter communication system

Info

Publication number: WO2023035585A1
Application number: PCT/CN2022/081364
Authority: WO
Inventors: 石柳; 孙柏昶; 梅立荣; 许沐; 赵玉超
Original assignee: 中国电子科技集团公司第五十四研究所
Priority date: 2021-09-13
Filing date: 2022-03-17
Publication date: 2023-03-16
Also published as: CN113993212A

Abstract

Provided are a networking method for scatter communication, a central station, a peripheral station and a scatter communication system. In the system, an FDD or TDD communication mode is used, a downlink multi-access mode is TDMA, and an uplink multi-access mode is SDMA. The central station is configured with a digital array antenna. The method comprises: receiving an antenna alignment request signal of a peripheral station, and sending a response signal to the peripheral station in an idle timeslot, so as to complete antenna alignment with the peripheral station (S101); performing signal interaction with the peripheral station in the idle timeslot, so as to determine a timeslot number of a reservation phase (S102); in a timeslot corresponding to the timeslot number of the reservation phase, performing signal interaction with the peripheral station, and determining a timeslot number of a data phase, and symbol data, a modulation mode and a coding rate used in the data phase (S103); and in a timeslot corresponding to the timeslot number of the data phase, performing service data transmission with the peripheral station by means of the symbol data, the modulation mode and the coding rate (S104). By means of the present application, the point-to-multipoint networking performance of a scatter communication system can be improved.

Description

Networking method of scatter communication, central station, peripheral station and scatter communication system

This patent application claims the priority of Chinese Patent Application No. CN 202111070978.1 filed on September 13, 2021. The disclosure of the prior application is incorporated by reference in its entirety into this application.

technical field

The application belongs to the field of scatter communication technology, and in particular relates to a scatter communication networking method, a central station, a peripheral station and a scatter communication system.

Background technique

In the existing point-to-multipoint scattered communication schemes, all of them are implemented by simply stacking devices at the central station. The central station adopts a traditional parabolic antenna and configures multiple sets of independent equipment to build multiple links to realize point-to-multipoint communication.

Although the existing system can realize simple point-to-multipoint communication functions, it does not realize the integration and simplification of equipment, does not have flexible scalability, cannot meet the access requirements of more nodes, and does not support rapid grouping within the area. network communication. When multi-point communication is required, the central station has a large number of scattering devices, which increases the difficulty of deploying personnel, sites, and spectrum. In addition, the opening of existing scattered communication links requires auxiliary communication methods such as satellite positioning and Beidou short messages. Without auxiliary communication means, link opening is difficult, and the ability to open independent fast links is weak.

How to improve the performance of point-to-multipoint networking in scatter communication is an urgent problem to be solved in the prior art.

technical problem

The application provides a networking method for scatter communication, a central station, a peripheral station and a scatter communication system, which can improve the performance of point-to-multipoint networking in scatter communication.

technical solution

The first aspect of the embodiments of the present application provides a networking method for scatter communication. The method is applied to a scatter communication system. The scatter communication system includes a central station and peripheral stations. The scatter communication system adopts frequency division dual Work FDD or time division duplex TDD communication mode, the downlink multiple access method from the central station to the peripheral station is time division multiple access TDMA, and the uplink multiple access method from the peripheral station to the central station is space division multiple access SDMA , the method is applied to the central station of the scatter communication system, the central station is configured with a digital array antenna, the method includes:

receiving the antenna alignment request signal of the outlying station, and sending a response signal to the outlying station in an idle time slot, so as to complete the antenna alignment with the outlying station;

Perform signal interaction with the peripheral station in an idle time slot, and determine the time slot number of the reservation phase;

In the time slot corresponding to the time slot number of the reservation phase, signal interaction is performed with the peripheral station, and the time slot number of the data phase and the symbol data, modulation mode and coding rate adopted in the data phase are determined;

In the time slot corresponding to the time slot number of the data phase, the service data is transmitted with the peripheral station through the symbol data, the modulation mode and the coding rate.

In a possible implementation manner, the method further includes: if the information sent by the outstation is not received within the first preset time period, releasing the time slot number corresponding to the data stage allocated for the outstation time slot.

In a possible implementation manner, the method further includes: if no information sent by the peripheral station is received within a second preset time period, releasing all information of the peripheral station, wherein the second The preset time period is greater than the first preset time period.

In a possible implementation, the method further includes:

Acquire the traffic data transmission volume of the peripheral station, and determine the number of time slots allocated for the data phase of the peripheral station according to the traffic data transmission traffic of the peripheral station.

In a possible implementation manner, the scatter communication system includes a plurality of peripheral stations, and the method further includes:

During a time slot for communicating with a target outstation, adjusting the sending beam to point to the target outstation, wherein the target outstation is any outstation in the plurality of outstations;

Alternatively, at least two transmission beams are used, so that each outlying station corresponds to one transmission beam.

The second aspect of the embodiment of the present application provides a networking method for scatter communication. The method is applied to a scatter communication system. The scatter communication system includes a central station and peripheral stations. The scatter communication system adopts frequency division dual Work FDD communication method or time division duplex TDD communication method, the downlink multiple access method from the central station to the peripheral station is time division multiple access TDMA, and the uplink multiple access method from the peripheral station to the central station is space division multiple access Address SDMA, the method is applied to the peripheral station of the scatter communication system, the method includes:

Sending an antenna alignment request signal to the central station, receiving a response signal sent by the central station in an idle time slot of the central station, and completing antenna alignment with the central station;

Perform signal interaction with the central station in the idle time slot of the central station to determine the time slot number of the reservation stage;

In the time slot corresponding to the time slot number of the reservation stage, signal interaction is performed with the central station, and the time slot number of the data stage and the symbol data, modulation mode and coding rate adopted in the data stage are determined;

In the time slot corresponding to the time slot number in the data phase, the service data is transmitted with the central station through the symbol data, the modulation mode and the coding rate.

In a possible implementation manner, the method further includes: synchronizing the time slots of the outlying stations to the time slots of the central station in a self-synchronizing manner, so as to replace the external timing means.

In the third aspect, the embodiment of the present application provides a central station, the central station is applied to a scatter communication system, the scatter communication system also includes peripheral stations, and the scatter communication system adopts frequency division duplex FDD or time division Duplex TDD communication mode, the downlink multiple access method from the central station to the peripheral station is time division multiple access TDMA, the uplink multiple access method from the peripheral station to the central station is space division multiple access SDMA, and the center The station is equipped with a digital array antenna. The central station includes a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the computer program, the above first Aspect or steps of the method described in any possible implementation manner of the first aspect.

In a fourth aspect, an embodiment of the present application provides an outstation, the outstation is applied to a scatter communication system, the scatter communication system further includes a central station, and the scatter communication system adopts a frequency division duplex FDD communication method Or time division duplex TDD communication mode, the downlink multiple access method from the central station to the peripheral station is time division multiple access TDMA, and the uplink multiple access method from the peripheral station to the central station is space division multiple access SDMA, so The peripheral station includes a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the computer program, the steps of the method described in the second aspect above are realized.

In the fifth aspect, the embodiment of the present application provides a scatter communication system, including a central station and a peripheral station. The system adopts a frequency division duplex FDD communication method or a time division duplex TDD communication method, and the central station to the peripheral station The downlink multiple access mode is time division multiple access TDMA, and the uplink multiple access mode from the peripheral station to the central station is space division multiple access SDMA, and the system is used for:

The central station receives the antenna alignment request signal of the peripheral station, and sends a response signal to the peripheral station in an idle time slot, and completes the antenna alignment with the peripheral station;

The central station performs signal interaction with the peripheral station in an idle time slot to determine the time slot number of the reservation stage;

In the time slot corresponding to the time slot number of the reservation phase, the central station performs signal interaction with the peripheral station to determine the time slot number of the data phase and the symbol data, modulation mode and coding rate adopted in the data phase;

In the time slot corresponding to the time slot number of the data stage, the central station and the outlying station transmit service data through the symbol data, the modulation mode and the coding rate.

In a possible implementation manner, the central station is also used for:

If the information sent by the peripheral station is not received within the first preset time period, the time slot corresponding to the time slot number of the data phase allocated for the peripheral station is released.

In a possible implementation manner, the peripheral station is also used for:

Self-synchronization method is used to synchronize the time slots of the peripheral stations to the time slots of the central station, which is used to replace the external timing means.

Beneficial effect

The embodiment of the present application provides a networking method of a scatter communication system, a central station, an outlying station, and a scatter communication system. The central station discovers a new outlying station by receiving the antenna alignment request signal from the outlying station, and assigns a reservation stage to the outlying station. The time slot number of the time slot number and the time slot number of the data phase, so that the central station can communicate with multiple outlying stations, and the point-to-multipoint communication of the scattering communication system can be realized through a central station, and the central station and the new station can be opened quickly. The link between the outlying stations improves the networking performance of the scatter communication system.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings that need to be used in the descriptions of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only for the present application For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without paying creative efforts.

FIG. 1 is an implementation flowchart of a networking method for scattered communication provided in an embodiment of the present application;

FIG. 2 is an implementation flow chart of another networking method for scattered communication provided by an embodiment of the present application;

FIG. 3 is a flow chart of another networking method for scattered communication provided by an embodiment of the present application;

Fig. 4 is an implementation flow chart of another networking method for scatter communication provided by an embodiment of the present application;

FIG. 5 is a flow chart of another method for networking of scatter communication provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of a scattering communication system provided by an embodiment of the present application;

Fig. 7 is a schematic diagram of a central station or a peripheral station provided by an embodiment of the present application.

Embodiment of this application

In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

In order to make the purpose, technical solution and advantages of the present application clearer, specific embodiments will be described below in conjunction with the accompanying drawings.

Referring to FIG. 1 , it shows a flow chart of implementing a networking method for scatter communication provided by an embodiment of the present application, which is described in detail as follows:

S101. Receive an antenna alignment request signal from an outlying station, and send a response signal to the outlying station in an idle time slot, to complete antenna alignment with the outlying station.

Optionally, the executor of this embodiment of the application is the central station of the scatter communication system. The scatter communication system includes a central station and peripheral stations. The scatter communication system adopts frequency division duplex FDD communication mode or time division duplex TDD communication mode. The channels are independent of each other, the downlink multiple access method from the central station to the peripheral station is time division multiple access TDMA, the uplink multiple access method from the peripheral station to the central station is space division multiple access SDMA, and the central station is equipped with a digital array antenna .

Compared with traditional antennas, digital array antennas add digital beamforming units and digital signal processing units, and have the characteristics of high gain, low sidelobes, multi-beam scanning, multi-target processing and adaptive beam steering that traditional antenna systems do not have.

Optionally, FIG. 2 shows a networking method for scatter communication, and step S101 corresponds to the alignment phase of the peripheral station 1 in FIG. 2 . The outlying station calls first, and the free time slots in the access, reservation, and data phases of the central station and other outlying stations can all be used to send a response signal after receiving the calling signal. After that, the two interact to complete the antenna alignment.

Optionally, the central station adjusts the sending beam to point to the target outer station during the time slot for communicating with the target outer station, wherein the target outer station is any one of the plurality of outer stations; or, through at least two sending beams , so that each outstation corresponds to a transmit beam.

That is, the central station can have only one sending beam, and only point the sending beam to the outer station during the time slot for communicating with the outer station, or expand the sending beam to two or more (two) according to the deployment of the outer station. more than one), so that each outstation corresponds to one transmit beam.

In the uplink direction, the central station can receive the signal sent by the peripheral station when the receiving beam points to the peripheral station.

S102, performing signal interaction with the peripheral station in an idle time slot, and determining a time slot number in the reservation phase.

This step corresponds to the access phase of the peripheral station 1 in FIG. 2 . In the access stage, the central station is used for the time slot number of the interactive reservation stage for the central station and the outlying station that has completed antenna alignment and has not yet been connected, such as outlying station 1.

S103, in the time slot corresponding to the time slot number in the reservation phase, perform signal interaction with the peripheral station, and determine the time slot number in the data phase and the symbol data, modulation mode and coding rate used in the data phase.

This step corresponds to the reservation stage of the peripheral station 1 and the peripheral station 2 in FIG. 2 . The reservation stage is used for the time slot number in the data stage of the further interaction between the central station and the connected peripheral stations, the symbol data, modulation method, and coding rate to be used for data transmission; the symbol data includes the symbol rate.

S104, in the time slot corresponding to the time slot number in the data phase, transmit service data with the peripheral station by using the symbol data, the modulation mode and the coding rate.

This step corresponds to the data stage of the peripheral station 1 and the peripheral station 2 in FIG. 2 . The data phase is used for the central station to transmit business data with the connected peripheral stations.

The outlying stations that have completed the access stage only need the reservation stage and the data stage to maintain information interaction with the central station.

Optionally, acquire the service data transmission volume of the peripheral station, and determine the number of time slots allocated for the data phase of the peripheral station according to the service data transmission volume of the peripheral station.

That is, the central station can adapt to the dynamically changing demand for data transmission and allocate more time slots to the outlying stations with large demand.

The embodiment of the present application provides a networking method for scattered communication. The central station periodically completes the signal interaction with the peripheral stations in the downlink direction, and discovers new peripheral stations in time by receiving the antenna alignment request signals of the peripheral stations. Outer stations allocate time slot numbers in the reservation stage and data stage, so that the central station can communicate with multiple outlying stations, and the point-to-multipoint communication of the scattering communication system can be realized through one central station, and can be opened quickly The link between the central station and the new outlying station improves the networking performance of the scatter communication system.

FIG. 3 shows a flow chart of another method for networking of scatter communication provided by the embodiment of the present application, which is described in detail as follows:

S301. Receive an antenna alignment request signal from an outlying station, and send a response signal to the outlying station in an idle time slot, to complete antenna alignment with the outlying station.

S302, performing signal interaction with the peripheral station in an idle time slot, and determining a time slot number in the reservation phase.

S303, in the time slot corresponding to the time slot number in the reservation phase, perform signal interaction with the peripheral station, and determine the time slot number in the data phase, as well as the symbol data, modulation mode and coding rate used in the data phase; the symbol data includes the symbol rate.

S304, in the time slot corresponding to the time slot number in the data phase, transmit service data with the peripheral station by using the symbol data, the modulation mode and the coding rate.

For the specific implementation manner of the above step S301 to step S304, refer to step S101 to step S104 in the embodiment corresponding to FIG. 1 , which will not be repeated in this embodiment of the present application.

S305. If the information sent by the outstation is not received within the first preset time period, release the time slot corresponding to the time slot number of the data stage allocated for the outstation.

Optionally, with reference to FIG. 4 , the method further includes a release phase and an exit phase, and this step corresponds to the release phase of the peripheral station 1 in FIG. 4 .

Optionally, the first preset time period may be set to 10 minutes, or to other time lengths according to system requirements, which is not limited in this embodiment of the present application.

If the connected peripheral station does not perform information interaction with the central station within the first preset time period, all time slot resources allocated for the peripheral station will be released. If the peripheral station needs to transmit business data with the central station, Then the peripheral station needs to re-enter the reservation stage corresponding to step S303.

S306. Release all information of the outstation if no information sent by the outstation is received within a second preset time period, wherein the second preset time period is greater than the first preset time period.

This step corresponds to the exit phase of the outstation 1 in FIG. 4 .

Optionally, the second preset time period may be set to 1 hour, or to other time lengths according to system requirements, which is not limited in this embodiment of the present application.

If the connected peripheral station does not perform information interaction with the central station within the second preset time period, then release all information related to the peripheral station; if the peripheral station needs to transmit business data with the central station, the The peripheral station needs to re-enter the alignment phase corresponding to step S301.

It can be seen from the above that this application can combine the physical channel and the multi-dimensional resource scheduling of the information perception of the deployment situation, each peripheral station has an exclusive beam to send information to the central station, and the central station receives the information of each peripheral station at the same time. Support random access of peripheral stations, with the ability to dynamically allocate and reclaim channel resources, and allocate on-demand, to ensure real-time and reliable transmission of information to meet the business needs of distant and near peripheral stations, realize random access, flexible networking, and comprehensively improve Point-to-multipoint link establishment and networking performance. And it can find out in time that the original peripheral station stops working or leaves the communication range, and can release time slot resources to ensure the resource utilization rate of the system.

FIG. 5 shows a flow chart of another method for networking of scattered communication provided by the embodiment of the present application, which is described in detail as follows:

S501. Send an antenna alignment request signal to the central station, receive a response signal sent by the central station in an idle time slot of the central station, and complete antenna alignment with the central station.

The method provided in the embodiment of the present application is applied to a peripheral station in a scatter communication system. The scatter communication system also includes a central station. The scatter communication system adopts frequency division duplex FDD communication mode or time division duplex TDD communication mode, and The downlink multiple access method of the peripheral station is TDMA, and the uplink multiple access method from the peripheral station to the central station is space division multiple access SDMA.

S502, performing signal interaction with the central station in an idle time slot of the central station, and determining a time slot number in the reservation phase.

S503, in the time slot corresponding to the time slot number in the reservation phase, perform signal interaction with the central station to determine the time slot number in the data phase and the symbol data, modulation mode and coding rate used in the data phase; the symbol data includes the symbol rate.

S504, in the time slot corresponding to the time slot number in the data phase, transmit service data with the central station by using the symbol data, the modulation mode and the encoding code rate.

Optionally, the method further includes: adopting a self-synchronization method to synchronize the time slots of the peripheral stations to the time slots of the central station, so as to replace the external timing means. For the specific implementation manner of the embodiment of the present application, reference may be made to the corresponding embodiment in FIG. 1 , and details will not be repeated in the embodiment of the present application.

It should be understood that the sequence numbers of the steps in the above embodiments do not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiment of the present application.

Optionally, with reference to FIG. 6 , the embodiment of the present application also exemplarily provides a scatter communication system, including a central station and a peripheral station, and the scatter communication system adopts a frequency division duplex FDD communication method or a time division duplex TDD communication method , the downlink multiple access method from the central station to the peripheral station is time division multiple access TDMA, the uplink multiple access method from the peripheral station to the central station is space division multiple access SDMA, and the scatter communication system is used for:

In the time slot corresponding to the time slot number of the reservation stage, the central station performs signal interaction with the peripheral station to determine the time slot number of the data stage and the symbol data, modulation mode and coding rate adopted in the data stage; symbol data including symbol rate;

Optionally, the central station in the scatter communication system is also used for: if the information sent by the peripheral station is not received within the first preset time period, release the time slot number of the data stage allocated for the peripheral station the corresponding time slot.

Optionally, the central station in the scatter communication system is further configured to: release all information of the peripheral station if no information sent by the peripheral station is received within a second preset time period, wherein the first The second preset time period is greater than the first preset time period.

Optionally, the central station in the scatter communication system is also used to: obtain the business data transmission volume of the peripheral station, and determine the number of time slots allocated for the data phase of the peripheral station according to the business data transmission volume of the peripheral station .

Optionally, the central station in the scatter communication system is also used for:

Optionally, the outstations in the scatter communication system are also used to:

The embodiment of the present application provides a scatter communication system, which can combine physical channels and multi-dimensional resource scheduling based on information perception of deployment conditions. Each outlying station has an exclusive beam to send information to the central station, and the central station receives information from each outlying station at the same time. Support random access of peripheral stations, with the ability to dynamically allocate and reclaim channel resources, and allocate on-demand, to ensure real-time and reliable transmission of information to meet the business needs of distant and near peripheral stations, realize random access, flexible networking, and comprehensively improve Point-to-multipoint link establishment and networking performance. And it can find out in time that the original peripheral station stops working or leaves the communication range, and can release time slot resources to ensure the resource utilization rate of the system.

Fig. 7 is a schematic diagram of a central station or a peripheral station provided by an embodiment of the present application. As shown in FIG. 7 , the central station or peripheral station 7 of this embodiment includes: a processor 70 , a memory 71 and a computer program 72 stored in the memory 71 and operable on the processor 70 . When the processor 70 executes the computer program 72 , the steps in the above embodiments of the networking method for scattered communication are implemented, for example, steps 101 to 104 shown in FIG. 1 .

Exemplarily, the computer program 72 can be divided into one or more modules/units, and the one or more modules/units are stored in the memory 71 and executed by the processor 70 to complete this application. The one or more modules/units may be a series of computer program instruction segments capable of accomplishing specific functions, and the instruction segments are used to describe the execution process of the computer program 72 in the central station or peripheral station 7 .

The central station or peripheral station 7 may include, but not limited to, a processor 70 and a memory 71 . Those skilled in the art can understand that Fig. 7 is only an example of the central station or the peripheral station 7, and does not constitute a limitation to the central station or the peripheral station 7, and may include more or less components than those shown in the illustration, or combine some Components, or different components, such as the central station or peripheral stations may also include input and output devices, network access devices, buses, and the like.

The so-called processor 70 may be a central processing unit (Central Processing Unit, CPU), can also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

The memory 71 may be an internal storage unit of the central station or the peripheral station 7 , such as a hard disk or memory of the central station or the peripheral station 7 . The memory 71 can also be an external storage device of the central station or the peripheral station 7, such as a plug-in hard disk equipped on the central station or the peripheral station 7, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, flash memory card (Flash Card), etc. Further, the memory 71 may also include both the internal storage unit of the central station or the peripheral station 7 and an external storage device. The memory 71 is used to store the computer program and other programs and data required by the central station or peripheral station. The memory 71 can also be used to temporarily store data that has been output or will be output.

Those skilled in the art can clearly understand that for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used for illustration. In practical applications, the above-mentioned functions can be assigned to different functional units, Completion of modules means that the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment may be integrated into one processing unit, or each unit may exist separately physically, or two or more units may be integrated into one unit, and the above-mentioned integrated units may adopt hardware It can also be implemented in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the present application. For the specific working processes of the units and modules in the above system, reference may be made to the corresponding processes in the aforementioned method embodiments, and details will not be repeated here.

In the above-mentioned embodiments, the descriptions of each embodiment have their own emphases, and for parts that are not detailed or recorded in a certain embodiment, refer to the relevant descriptions of other embodiments.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

In the embodiments provided in this application, it should be understood that the disclosed device/central station or peripheral station and method may be implemented in other ways. For example, the above-described embodiment of the device/central station or peripheral station is only illustrative, for example, the division of the modules or units is only a logical function division, and there may be other division methods in actual implementation, such as Multiple units or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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 module/unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments in the present application can also be completed by instructing related hardware through computer programs. The computer programs can be stored in a computer-readable storage medium, and the computer When the program is executed by the processor, the steps in the above embodiments of the networking method for scattered communication can be realized. Wherein, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a removable hard disk, a magnetic disk, an optical disk, a computer memory, and a read-only memory (Read-Only Memory, ROM) , random access memory (Random Access Memory, RAM), electric carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained in the computer-readable medium may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, computer-readable media Excluding electrical carrier signals and telecommunication signals.

The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still implement the foregoing embodiments Modifications to the technical solutions described in the examples, or equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the application, and should be included in the Within the protection scope of this application.

Claims

A networking method for scatter communication, characterized in that the method is applied to a scatter communication system, the scatter communication system includes a central station and peripheral stations, and the scatter communication system adopts frequency division duplex FDD communication mode or time division Duplex TDD communication mode, the downlink multiple access method from the central station to the peripheral station is time division multiple access TDMA, the uplink multiple access method from the peripheral station to the central station is space division multiple access SDMA, the method applies In the central station of the scatter communication system, the central station is equipped with a digital array antenna, and the method includes:

receiving the antenna alignment request signal of the outlying station, and sending a response signal to the outlying station in an idle time slot, so as to complete the antenna alignment with the outlying station;

Perform signal interaction with the peripheral station in an idle time slot, and determine the time slot number of the reservation phase;

In the time slot corresponding to the time slot number of the reservation phase, signal interaction is performed with the peripheral station, and the time slot number of the data phase and the symbol data, modulation mode and coding rate adopted in the data phase are determined;

In the time slot corresponding to the time slot number of the data phase, the service data is transmitted with the peripheral station through the symbol data, the modulation mode and the coding rate.
The method according to claim 1, further comprising: if the information sent by the outstation is not received within the first preset time period, releasing the data period allocated for the outstation The time slot corresponding to the time slot number.
The method according to claim 2, further comprising: releasing all information of the peripheral station if no information sent by the peripheral station is received within a second preset time period, wherein, The second preset time period is greater than the first preset time period.
The method according to any one of claims 1 to 3, characterized in that the method further comprises:

Acquire the traffic data transmission volume of the peripheral station, and determine the number of time slots allocated for the data phase of the peripheral station according to the traffic data transmission volume of the peripheral station.
The method according to any one of claims 1 to 3, wherein the scatter communication system includes a plurality of outlying stations, and the method also includes:

During a time slot for communicating with a target outstation, adjusting the sending beam to point to the target outstation, wherein the target outstation is any outstation in the plurality of outstations;

Alternatively, at least two transmission beams are used, so that each outlying station corresponds to one transmission beam.
A networking method for scatter communication, characterized in that the method is applied to a scatter communication system, the scatter communication system includes a central station and peripheral stations, and the scatter communication system adopts frequency division duplex FDD communication mode or time division Duplex TDD communication mode, the downlink multiple access method from the central station to the peripheral station is time division multiple access TDMA, the uplink multiple access method from the peripheral station to the central station is space division multiple access SDMA, the method applies For an outstation of the scatter communication system, the method includes:

Sending an antenna alignment request signal to the central station, receiving a response signal sent by the central station in an idle time slot of the central station, and completing antenna alignment with the central station;

Perform signal interaction with the central station in the idle time slot of the central station to determine the time slot number of the reservation stage;

In the time slot corresponding to the time slot number of the reservation phase, signal interaction is performed with the central station to determine the time slot number of the data phase and the symbol data, modulation mode and coding rate adopted in the data phase;

In the time slot corresponding to the time slot number in the data phase, the service data is transmitted with the central station through the symbol data, the modulation mode and the coding rate.
The method according to claim 6, further comprising: adopting a self-synchronization method to synchronize the time slots of the peripheral stations to the time slots of the central station, so as to replace external timing means.
A central station, characterized in that the central station is applied to a scatter communication system, the scatter communication system also includes peripheral stations, and the scatter communication system adopts frequency division duplex FDD communication mode or time division duplex TDD communication mode, the downlink multiple access method from the central station to the peripheral station is time division multiple access TDMA, the uplink multiple access method from the peripheral station to the central station is space division multiple access SDMA, and the central station is configured with digital An array antenna, the central station includes a memory, a processor, and a computer program stored in the memory and operable on the processor, when the processor executes the computer program, it realizes the invention as claimed in claims 1 to 5 The steps of any one of the methods.
A peripheral station, characterized in that the peripheral station is applied to a scatter communication system, the scatter communication system also includes a central station, and the scatter communication system adopts frequency division duplex FDD communication mode or time division duplex TDD communication mode, the downlink multiple access method from the central station to the peripheral station is time division multiple access TDMA, the uplink multiple access method from the peripheral station to the central station is space division multiple access SDMA, and the peripheral station includes a memory, A processor and a computer program stored in the memory and operable on the processor, the steps of the method as claimed in claim 6 are implemented when the processor executes the computer program.
A scatter communication system, characterized in that it includes a central station and a peripheral station, the scatter communication system adopts a frequency division duplex FDD communication method or a time division duplex TDD communication method, and the downlink from the central station to the peripheral station is multiple The address mode is time division multiple access TDMA, the uplink multiple access mode from the peripheral station to the central station is space division multiple access SDMA, and the scatter communication system is used for:

The central station receives the antenna alignment request signal of the peripheral station, and sends a response signal to the peripheral station in an idle time slot, and completes antenna alignment with the peripheral station;

The central station performs signal interaction with the peripheral station in an idle time slot to determine the time slot number of the reservation stage;

In the time slot corresponding to the time slot number of the reservation phase, the central station performs signal interaction with the peripheral station to determine the time slot number of the data phase and the symbol data, modulation mode and coding rate adopted in the data phase;

In the time slot corresponding to the time slot number of the data stage, the central station and the outlying station transmit service data through the symbol data, the modulation mode and the coding rate.
The scatter communication system according to claim 10, wherein the central station is also used for:

If the information sent by the peripheral station is not received within the first preset time period, the time slot corresponding to the time slot number of the data phase allocated for the peripheral station is released.
The scatter communication system according to claim 10, wherein the peripheral station is also used for:

Self-synchronization method is used to synchronize the time slots of the peripheral stations to the time slots of the central station, which is used to replace the external timing means.