CN116054904A - Satellite internet of things communication system, method and storage medium - Google Patents

Satellite internet of things communication system, method and storage medium Download PDF

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Publication number
CN116054904A
CN116054904A CN202111262236.9A CN202111262236A CN116054904A CN 116054904 A CN116054904 A CN 116054904A CN 202111262236 A CN202111262236 A CN 202111262236A CN 116054904 A CN116054904 A CN 116054904A
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China
Prior art keywords
internet
things
data
base station
transmission base
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CN202111262236.9A
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张少伟
蔡云斌
侯继江
焦洪彪
芒戈
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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Priority to CN202111262236.9A priority Critical patent/CN116054904A/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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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

Abstract

The disclosure provides a satellite internet of things communication system, a satellite internet of things communication method and a storage medium, and relates to the technical field of communication, wherein the satellite internet of things communication system comprises: high orbit satellite, access network, core network and application system; the internet of things ground transmission base station is used for receiving data transmitted by the data processing server and transmitting the data to the high-orbit satellite, receiving the data transmitted by the high-orbit satellite and transmitting the data to the data processing server; the data processing server is used for sending the data transmitted by the Internet of things ground transmission base station to the Internet of things application device through the packet core network, and transmitting the data sent by the Internet of things application device and received through the packet core network to the Internet of things ground transmission base station. The method, the device and the medium have strong platform processing capability, stable channel state and low construction cost; the application requirement of the satellite communication for realizing the large-scale Internet of things can be met, and the access success rate is effectively improved.

Description

Satellite internet of things communication system, method and storage medium
Technical Field
The disclosure relates to the technical field of communication, in particular to a satellite internet of things communication system, a satellite internet of things communication method and a storage medium.
Background
At present, the Internet of things mainly depends on a ground communication network to realize wide area coverage. However, due to the limitation of the coverage of the terrestrial communication network, the internet of things application service cannot be provided. For example, for wider application scenes of the internet of things such as ocean, desert and the like, the internet of things application service cannot be provided due to the lack of necessary ground communication network facility support; in addition, under the condition of serious natural disasters such as earthquake, debris flow, typhoon and the like, the ground communication network facilities are easily damaged, and the communication link is interrupted, so that the service of the Internet of things is greatly influenced. The satellite network and the ground network construct an integrated architecture of the Internet of things by virtue of the unique advantages of the wide area and the no-vulnerability of the satellite network, so that the application field and the range of the Internet of things can be effectively expanded, as shown in fig. 1. At present, due to the limitation of satellite channels and resources, the data transmission efficiency is low, and the application requirements of large-scale internet of things terminals cannot be met.
Disclosure of Invention
In view of this, it is an technical problem to be solved by the present disclosure to provide a satellite internet of things communication system, method and storage medium.
According to a first aspect of the present disclosure, there is provided a satellite internet of things communication system comprising: high orbit satellite, access network, core network and application system; the access network comprises: the Internet of things ground transmission base station and the data processing server; the application system comprises: the application device of the Internet of things; the core network comprises: a packet core network; the internet of things ground transmission base station is used for receiving data transmitted by the data processing server and transmitting the data to the high-orbit satellite, and receiving data transmitted by the high-orbit satellite and transmitting the data to the data processing server; the data processing server is used for sending the data transmitted by the Internet of things ground transmission base station to the Internet of things application device through the packet core network, and sending the data received by the packet core network and sent by the Internet of things application device to the Internet of things ground transmission base station.
Optionally, the data processing server is further configured to establish a D-BCCH and a D-AGCH channel with the internet of things application device, and broadcast IoT information via a downlink message on the D-BCCH channel.
Optionally, the internet of things application device sends uplink service data through the D-RACH channel; the data processing server is further configured to perform verification processing on the uplink service data through a downlink D-AGCH channel after receiving the uplink service data.
Optionally, the data processing server is further configured to broadcast uplink frequency points through the D-BCCH channel and the D-AGCH channel, and send data to a terminal or confirm uplink service data through the D-BCCH channel and the D-AGCH channel.
Optionally, the access network includes: a universal terrestrial transmission base station and a terrestrial transmission base station controller; the universal ground transmission base station is used for receiving the data transmitted by the ground transmission base station controller and transmitting the data to the high-orbit satellite, and receiving the data transmitted by the high-orbit satellite and transmitting the data to the ground transmission base station controller; the ground transmission base station controller is configured to transmit data transmitted by the internet of things ground transmission base station or the universal ground transmission base station through the CS core network.
Optionally, the method further comprises: satellite terminals and internet of things terminals; and the high orbit satellite, the satellite terminal and the internet of things terminal are in communication connection for data transmission.
According to a second aspect of the present disclosure, there is provided a satellite internet of things communication method, wherein an access network includes: the Internet of things ground transmission base station and the data processing server; comprising the following steps: the internet of things ground transmission base station receives the data transmitted by the data processing server and transmits the data to the high-orbit satellite, and receives the data transmitted by the high-orbit satellite and transmits the data to the data processing server; and the data processing server transmits the data transmitted by the Internet of things ground transmission base station to the Internet of things application device through the packet core network, and transmits the data transmitted by the Internet of things application device received through the packet core network to the Internet of things ground transmission base station.
Optionally, the data processing server establishes a D-BCCH and D-AGCH channel with the internet of things application device; the data processing server broadcasts IoT information via a downlink message on the D-BCCH channel.
Optionally, the internet of things application device sends uplink service data through the D-RACH channel; and after receiving the uplink service data, the data processing server verifies the uplink service data through a downlink D-AGCH channel.
Optionally, the data processing server broadcasts uplink frequency points through the D-BCCH channel and the D-AGCH channel; the data processing server transmits data to a terminal or acknowledges uplink service data through the D-BCCH channel and the D-AGCH channel.
Optionally, the access network includes: a universal terrestrial transmission base station and a terrestrial transmission base station controller; the method further comprises the steps of: the universal ground transmission base station receives the data transmitted by the ground transmission base station controller and sends the data to the high-orbit satellite; the universal ground transmission base station receives the data sent by the high-orbit satellite and transmits the data to the ground transmission base station controller; and the ground transmission base station controller transmits the data transmitted by the Internet of things ground transmission base station or the universal ground transmission base station through the CS core network.
Optionally, the high orbit satellite, the satellite terminal and the internet of things terminal are in communication connection for data transmission.
According to a third aspect of the present disclosure, there is provided a computer readable storage medium storing computer instructions for execution by a processor of a method as described above.
The satellite Internet of things communication system, the satellite Internet of things communication method and the storage medium have strong platform processing capacity, stable channel state and low construction cost; the method can meet the application requirements of the satellite communication for realizing the large-scale Internet of things and the access requirements of huge Internet of things terminal equipment under the condition of limited satellite channel resources, and effectively improves the access success rate.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the description of the prior art, it being obvious that the drawings in the following description are only some embodiments of the present disclosure, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic diagram of a conventional satellite internet of things system and an application scenario;
FIG. 2 is a schematic diagram of one embodiment of a satellite Internet of things communication system according to the present disclosure;
FIG. 3 is a flow diagram of a resource broadcast;
FIG. 4 is a schematic flow chart of uplink data;
FIG. 5 is a schematic flow chart of downstream data;
fig. 6 is a flow diagram of one embodiment of a satellite internet of things communication method according to the present disclosure.
Detailed Description
The present disclosure now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the disclosure are shown. The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure. The technical solutions of the present disclosure are described in various aspects below with reference to the drawings and the embodiments.
In one embodiment, as shown in fig. 2, the present disclosure provides a satellite internet of things communication system including a high orbit satellite 10, an access network 20, a core network 30, an application system 40, and the like. The High Orbit satellite is earth High Orbit satellite (High-Altitude Orbit), and the maximum Orbit height is generally higher than 20000km. The access network 20 includes internet of things terrestrial transmission base stations (Ground Transmission Station, GTSs) 21, data processing servers 22, and the like. The application system includes an internet of things application device including an internet of things application platform 41 and the like. The core network comprises a packet core network 31.
The internet of things ground transmission base station 21 receives data transmitted by the data processing server 22 and transmits the data to the high-orbit satellite 10, and receives data transmitted by the high-orbit satellite 10 and transmits the data to the data processing server 22. The data processing server 22 sends the data transmitted by the internet of things ground transmission base station 21 to the internet of things application devices such as the internet of things application platform 41 through the packet core network 31, and sends the data sent by the internet of things application devices such as the internet of things application platform 41 received through the packet core network 31 to the internet of things ground transmission base station 21.
The access network 20 includes a universal terrestrial transmission base station 23 and a terrestrial transmission base station controller 24, and the universal terrestrial transmission base station 23 may be any of a variety of existing terrestrial transmission base stations. The universal terrestrial transmission base station 23 receives the data transmitted from the terrestrial transmission base station controller 24 and transmits the data to the high-orbit satellite 10, and receives the data transmitted from the high-orbit satellite 10 and transmits the data to the terrestrial transmission base station controller 24. The terrestrial transmission base station controller 24 transmits data transmitted by the internet of things terrestrial transmission base station 21 or the general terrestrial transmission base station 23 through the CS core network 32.
The satellite internet of things communication system comprises a satellite terminal, an internet of things terminal and the like, wherein the satellite terminal can be an existing plurality of satellite terminals 50, and the internet of things terminal can be a plurality of satellite internet of things terminals 60. The high orbit satellite 10 establishes communication connection with the satellite terminal and the internet of things terminal for data transmission.
The high orbit satellite has the following advantages compared with the medium and low orbit satellite: 1. powerful processing power. The high-orbit satellite has strong platform processing capability, and the radio frequency performance and the airborne processing capability of the high-orbit satellite are obviously superior to those of low-orbit and medium-orbit satellites; 2. the channel state is stable. Because the position between the satellite and the ground terminal is not fixed, medium and low orbit satellites will produce severe doppler shifts. The high orbit satellite is static relative to the ground, the channel state is relatively stable, serious Doppler frequency shift can not be generated, and convenience is provided for simplified design of the terminal and the satellite receiver; 3. the construction cost is low. Compared with the low orbit constellation system scale, the high orbit satellite has a simple system structure, and therefore has advantages in construction cost and construction period.
The satellite Internet of things communication system in the embodiment can meet the requirements of satellite communication for realizing large-scale Internet of things application, and is composed of an Internet of things ground transmission base station, a data processing server and other physical equipment of the Internet of things on the basis of keeping the original satellite mobile communication system architecture unchanged. The function of the GTS of the base station of the Internet of things is to realize the function of receiving and transmitting signals together with the terminal equipment of the Internet of things by utilizing the existing antenna and radio frequency system. The function of the data processing server is to utilize the existing core network to exchange and route data of the Internet of things, so as to realize data butt joint with an application platform of the Internet of things.
In one embodiment, the long range nature of satellite communication networks results in the creation of inherent characteristics such as long time delays, and conventional random access protocol mechanisms are not fully compatible with satellite networks. The satellite internet of things channel resource scheme may be divided into a general channel resource scheme and a dedicated channel resource scheme:
1. and the common channel resource scheme is a data transmission scheme for realizing the Internet of things by utilizing common channel resources in the original short message system. When the universal channel resource scheme is adopted, the IoT data is used as universal data to share a common channel with other short message services. However, the service capability of the internet of things is limited by the capacity of the short message system, and the requirement of large-scale terminal application of the internet of things cannot be met.
2. Dedicated channel resource scheme: on the basis of maintaining the original protocol layer structure, a special channel resource scheme is designed to realize the data transmission of the Internet of things. Because the special channel resource is used and the capacity of the original short message system is not limited, the requirement of massive terminal application can be met, and the success rate of access is effectively improved.
The satellite internet of things communication system adopts a special channel resource scheme, and in order to meet the service application requirements of the internet of things, the following special channels are newly defined:
1. forward channel (from network to terminal). The D-BCCH (Dedicated Broadcast Control Channel ) and D-AGCH (Dedicated Access Grant Channel, dedicated access grant channel) channels are added to the broadcast resource information and uplink data acknowledgement response messages. The D-BCCH/D-AGCH channels are multiplexed with the original generic BCCH.
2. Reverse channel (terminal to network side). The access network selects appropriate channel resources among the traffic channels and configures them as D-RACH (Dedicated Random Access Channel ) channels for the terminal device to upload data. The access network distinguishes different application of the Internet of things through terminal identification and forwards data. The service data stream of the Internet of things comprises a resource broadcasting process, an uplink data sending process and a downlink data receiving process.
In one embodiment, the data processing server 22 establishes a D-BCCH and D-AGCH channel with the internet of things application devices such as the internet of things application platform 41 and broadcasts IoT information via downlink messages on the D-BCCH channel. After enabling satellite internet of things service, the data processing server 22 notifies the access network 20 to establish the D-BCCH/D-AGCH channel and broadcasts IoT information via downlink messages on the D-BCCH channel, as shown in fig. 3.
The internet of things application devices such as the internet of things application platform 41 send uplink service data through the D-RACH channel. After receiving the uplink service data, the data processing server 22 performs verification processing on the uplink service data through the downlink D-AGCH channel. And the terminal equipment transmits the uplink service data through the D-RACH channel. After receiving the uplink traffic data, the access network 20 verifies the data and acknowledges the received data through the downlink D-AGCH channel. When the amount of uplink data is large, the data may be transmitted multiple times, as shown in fig. 4.
The data processing server 22 broadcasts uplink frequency points through the D-BCCH channel and the D-AGCH channel, transmits data to terminals through the D-BCCH channel and the D-AGCH channel, or acknowledges uplink service data. The downlink channel adopts a multiplexing channel, and the D-BCCH/D-AGCH can be used to broadcast uplink frequency points, and can also transmit data to a specific terminal or confirm uplink service data, as shown in fig. 5.
The satellite Internet of things communication system in the embodiment adopts the high-orbit satellite, has strong platform processing capacity, stable channel state and low construction cost; the method can meet the application requirements of the satellite communication for realizing the large-scale Internet of things and the access requirements of huge Internet of things terminal equipment under the condition of limited satellite channel resources, and effectively improves the access success rate.
Fig. 6 is a flow chart illustrating an embodiment of a satellite internet of things communication method according to the present disclosure, as shown in fig. 6:
in step 601, the internet of things ground transmission base station receives data transmitted by the data processing server and transmits the data to the high orbit satellite, and receives data transmitted by the high orbit satellite and transmits the data to the data processing server.
In step 602, the data processing server sends the data transmitted by the internet of things ground transmission base station to the internet of things application device through the packet core network, and sends the data sent by the internet of things application device and received through the packet core network to the internet of things ground transmission base station.
In one embodiment, the data processing server establishes a D-BCCH and D-AGCH channel with the internet of things application device. The data processing server broadcasts IoT information via a downlink message on the D-BCCH channel. And the application device of the Internet of things sends the uplink service data through the D-RACH channel. After receiving the uplink service data, the data processing server verifies the uplink service data through a downlink D-AGCH channel. The data processing server broadcasts the uplink frequency point through the D-BCCH channel and the D-AGCH channel. The data processing server transmits data to the terminal or acknowledges the uplink service data through the D-BCCH channel and the D-AGCH channel.
The universal ground transmission base station receives the data transmitted by the ground transmission base station controller and transmits the data to the high-orbit satellite. The universal ground transmission base station receives data sent by the high-orbit satellite and transmits the data to the ground transmission base station controller. And the ground transmission base station controller passes the data transmitted by the Internet of things ground transmission base station or the universal ground transmission base station through the CS core network.
In one embodiment, the present disclosure provides a computer-readable storage medium storing computer instructions that, when executed by a processor, implement the satellite internet of things communication method of any of the embodiments above.
The application scene of the Internet of things in wider areas such as ocean, desert and the like lacks necessary ground communication network facility support, the Internet of things application service cannot be provided, in addition, under the condition of severe natural disasters such as earthquakes, debris flows, typhoons and the like, the ground communication network facility is easily destroyed, a communication link is interrupted, and the influence on the business of the Internet of things is also great. By using the satellite Internet of things communication system, the satellite Internet of things communication method and the storage medium in the embodiment, the application requirements of the satellite communication for realizing the large-scale Internet of things can be met, and the access requirements of huge Internet of things terminal equipment can be met under the condition of limited satellite channel resources.
The methods and systems of the present disclosure may be implemented in a number of ways. For example, the methods and systems of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, firmware. The above-described sequence of steps for the method is for illustration only, and the steps of the method of the present disclosure are not limited to the sequence specifically described above unless specifically stated otherwise. Furthermore, in some embodiments, the present disclosure may also be implemented as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.
The description of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (13)

1. A satellite internet of things communication system, comprising:
high orbit satellite, access network, core network and application system; the access network comprises: the Internet of things ground transmission base station and the data processing server; the application system comprises: the application device of the Internet of things; the core network comprises: a packet core network;
the internet of things ground transmission base station is used for receiving data transmitted by the data processing server and transmitting the data to the high-orbit satellite, and receiving data transmitted by the high-orbit satellite and transmitting the data to the data processing server;
the data processing server is used for sending the data transmitted by the Internet of things ground transmission base station to the Internet of things application device through the packet core network, and sending the data received by the packet core network and sent by the Internet of things application device to the Internet of things ground transmission base station.
2. The system of claim 1, wherein,
the data processing server is further configured to establish a D-BCCH and a D-AGCH channel with the internet of things application device, and broadcast IoT information via a downlink message on the D-BCCH channel.
3. The system of claim 2, wherein,
the application device of the Internet of things sends uplink service data through the D-RACH channel;
the data processing server is further configured to perform verification processing on the uplink service data through a downlink D-AGCH channel after receiving the uplink service data.
4. The system of claim 2, wherein,
the data processing server is further configured to broadcast uplink frequency points through the D-BCCH channel and the D-AGCH channel, and send data to a terminal or confirm uplink service data through the D-BCCH channel and the D-AGCH channel.
5. The system of claim 1, wherein,
the access network comprises: a universal terrestrial transmission base station and a terrestrial transmission base station controller;
the universal ground transmission base station is used for receiving the data transmitted by the ground transmission base station controller and transmitting the data to the high-orbit satellite, and receiving the data transmitted by the high-orbit satellite and transmitting the data to the ground transmission base station controller;
the ground transmission base station controller is configured to transmit data transmitted by the internet of things ground transmission base station or the universal ground transmission base station through the CS core network.
6. The system of claim 1, further comprising: satellite terminals and internet of things terminals;
and the high orbit satellite, the satellite terminal and the internet of things terminal are in communication connection for data transmission.
7. A satellite internet of things communication method, wherein an access network comprises: the Internet of things ground transmission base station and the data processing server; the method comprises the following steps:
the Internet of things ground transmission base station receives data transmitted by the data processing server and transmits the data to a high-orbit satellite, and receives data transmitted by the high-orbit satellite and transmits the data to the data processing server;
and the data processing server transmits the data transmitted by the Internet of things ground transmission base station to the Internet of things application device through the packet core network, and transmits the data transmitted by the Internet of things application device received through the packet core network to the Internet of things ground transmission base station.
8. The method of claim 7, further comprising:
the data processing server establishes a D-BCCH and a D-AGCH channel between the data processing server and the application device of the Internet of things;
the data processing server broadcasts IoT information via a downlink message on the D-BCCH channel.
9. The method of claim 8, further comprising:
the application device of the Internet of things sends uplink service data through the D-RACH channel;
and after receiving the uplink service data, the data processing server verifies the uplink service data through a downlink D-AGCH channel.
10. The method of claim 8, further comprising:
the data processing server broadcasts an uplink frequency point through the D-BCCH channel and the D-AGCH channel;
the data processing server transmits data to a terminal or acknowledges uplink service data through the D-BCCH channel and the D-AGCH channel.
11. The method of claim 7, wherein the access network comprises: a universal terrestrial transmission base station and a terrestrial transmission base station controller; the method further comprises the steps of:
the universal ground transmission base station receives the data transmitted by the ground transmission base station controller and sends the data to the high-orbit satellite;
the universal ground transmission base station receives the data sent by the high-orbit satellite and transmits the data to the ground transmission base station controller;
and the ground transmission base station controller transmits the data transmitted by the Internet of things ground transmission base station or the universal ground transmission base station through the CS core network.
12. The method of claim 7, further comprising:
and the high orbit satellite is in communication connection with the satellite terminal and the Internet of things terminal for data transmission.
13. A computer readable storage medium storing computer instructions for execution by a processor of the method of any one of claims 7 to 12.
CN202111262236.9A 2021-10-28 2021-10-28 Satellite internet of things communication system, method and storage medium Pending CN116054904A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111262236.9A CN116054904A (en) 2021-10-28 2021-10-28 Satellite internet of things communication system, method and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111262236.9A CN116054904A (en) 2021-10-28 2021-10-28 Satellite internet of things communication system, method and storage medium

Publications (1)

Publication Number Publication Date
CN116054904A true CN116054904A (en) 2023-05-02

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