CN107835529B - Dynamic access system, node, management center and method for space-based backbone network - Google Patents
Dynamic access system, node, management center and method for space-based backbone network Download PDFInfo
- Publication number
- CN107835529B CN107835529B CN201710913573.7A CN201710913573A CN107835529B CN 107835529 B CN107835529 B CN 107835529B CN 201710913573 A CN201710913573 A CN 201710913573A CN 107835529 B CN107835529 B CN 107835529B
- Authority
- CN
- China
- Prior art keywords
- short message
- inter
- management center
- user node
- network management
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/002—Transmission of channel access control information
- H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
-
- 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
- H04B7/18521—Systems of inter linked satellites, i.e. inter satellite service
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
Abstract
The invention discloses a dynamic access system, a node, a management center and a method for a space-based backbone network. The invention can realize the dynamic random access of the user node and the real-time or near real-time response of the data transmission request of the user node.
Description
Technical Field
The invention relates to the technical field of space networks, in particular to a Beidou short message-based dynamic access system of a space-based backbone network, a user node, an inter-satellite network management center and an access method.
Background
The dynamic access of the space-based backbone network refers to the process that a user node and a backbone satellite node establish an inter-satellite link to realize data transmission by the user node through the backbone satellite inter-satellite network.
An inter-satellite link of an antenna-based backbone network usually adopts a narrow-beam directional inter-satellite link, and establishing the inter-satellite link between a backbone satellite node and a user node requires that two parties acquire position information (such as a relay satellite) of the other party in advance and define fixed link establishment time, and the two parties point an inter-satellite link antenna to the other party at the defined link establishment time so as to establish a communication link and realize the access of the user node to the antenna-based backbone network. However, the method requires the space-based backbone network and the user node to acquire the position information of the other party in advance and to agree on the link establishment time, so that the dynamic random access of the user node cannot be realized, and the real-time performance of data transmission is poor.
Disclosure of Invention
In view of this, the invention provides a Beidou short message-based dynamic access system, a Beidou short message-based dynamic access node, a management center and a Beidou short message-based dynamic access method for an antenna-based backbone network, which can realize dynamic random access of user nodes and realize real-time or near real-time response of data transmission requests of the user nodes.
The specific embodiment of the invention is as follows:
a dynamic access system of a space-based backbone network based on Beidou short messages comprises user nodes and an inter-satellite network management center, wherein each user node sends a transmission service request to the inter-satellite network management center by using a Beidou message terminal installed by the user node, and the inter-satellite network management center receives and processes the transmission service request by using the Beidou message terminal installed by the user node, completes data transmission planning of the space-based backbone network and realizes dynamic random access to the space-based backbone network.
Further, the transmission service request comprises three Beidou message data formats, namely a transmission service request short message, a link establishment information short message and a confirmation short message;
the transmission service request short message comprises a message type, user node track information, request failure time and request transmission data volume; if the user node does not receive the link establishment information short message sent by the inter-satellite network management center within the set time t, the user node continues to send the transmission service request short message and sends the transmission service request short message for n times, wherein the interval time is not less than t, and n is 1-10, and an integer is taken;
the link establishment information short message comprises a message type, a planning result, backbone satellite node orbit information, a link establishment starting moment and a link establishment ending moment; the inter-satellite network management center plans link establishment information of the space-based backbone network and the user nodes according to the link resources of the current space-based backbone network, the request failure time in the transmission service request short message and the request transmission data volume; if the inter-satellite network management center does not receive the confirmation short message sent by the user node within the set time t, the inter-satellite network management center continuously sends the link establishment information short message and sends the link establishment information short message for n times, wherein the interval time is not less than t each time;
confirming that the short message comprises a message type and confirmation information; after receiving the short message of the link establishment information, the user node judges whether the starting time of the link establishment is the future time, if so, the user node sends a confirmation short message to the inter-satellite network management center, and if the confirmation message is true, the data transmission can be completed in the appointed time; if not, the confirmation message is false, and the transmission request fails.
A Beidou short message-based dynamic access method of a space-based backbone network adopts the Beidou short message-based dynamic access system of the space-based backbone network, and the specific flow of the dynamic access method is as follows:
after receiving a transmission service request of a demand party, the inter-satellite network management center plans a link establishment information of the skybrid network and the user node according to the link resource of the current skybrid network to generate a link establishment information short message; then, the inter-satellite network management center sends the link establishment information short message to the user node, and the user node sends a confirmation short message after receiving the link establishment information short message; after receiving the short message of the user node, the inter-satellite network management center sends the link establishment information to the space-based backbone network; and the space-based backbone network and the user node establish an inter-satellite link at the appointed time to complete data transmission.
Further, if the demand party is a user node, after the user node generates a data transmission service request, a transmission service request short message is generated, and then the transmission service request short message is sent to the inter-satellite network management center;
and if the demand party is the ground, the ground directly sends a transmission service request to the inter-satellite network management center.
A Beidou short message-based user node dynamically accessed to a space-based backbone network is characterized in that the user node sends a transmission service request to an inter-satellite network management center by using a self-mounted Beidou message terminal, waits for receiving a processing result of the inter-satellite network management center, and establishes an inter-satellite link with the space-based backbone network at a scheduled time to complete data transmission.
Further, after the user node generates a data transmission service request, a transmission service request short message is generated, then the transmission service request short message is sent to the inter-satellite network management center, and the reception of the link establishment information short message is waited;
after receiving the short message of the link establishment information, the user node judges whether the starting time of the link establishment is the future time, if so, the user node sends a confirmation short message to the inter-satellite network management center, and if the confirmation message is true, the user node can finish data transmission in the appointed time; if not, the confirmation message is false, and the transmission request fails.
The inter-satellite network management center receives and processes a transmission service request of a demand party by using a Beidou message terminal of the inter-satellite network management center, completes data transmission planning of an inter-satellite backbone network and realizes dynamic random access of user nodes to the inter-satellite backbone network.
Further, after receiving a transmission service request of a demand party, the inter-satellite network management center plans link establishment information of the skybrids and the user nodes according to link resources of the current skybrids to generate link establishment information short messages and sends the link establishment information short messages to the user nodes;
after receiving the confirmation short message sent by the user node, the inter-satellite network management center judges whether the confirmation information is true or false, and if the confirmation information is true, the inter-satellite network management center sends the link establishment information to a space-based backbone network; if the negotiation result is false, the transmission negotiation fails, and the processing flow is ended.
Further, if the demand party is a user node, the inter-satellite network management center receives a transmission service request short message generated by the user node;
if the demand party is the ground, the inter-satellite network management center directly receives the transmission service request of the ground.
Has the advantages that:
1. according to the invention, a Beidou message terminal is installed on each user node, and the data transmission request of the user node is responded by the dynamic random access antenna backbone network by utilizing the global coverage characteristic of the Beidou short message.
2. The user node and the inter-satellite network management center of the invention interactively adopt three Beidou message data formats, thereby being convenient for judging the transmission state and realizing data transmission.
Drawings
FIG. 1 is a system architecture of the present invention;
FIG. 2 is a transmission service request short message format;
FIG. 3 is a format of a link establishment message;
FIG. 4 is a diagram of an acknowledgment short message format
FIG. 5 is a user node processing flow in a scenario where a user node sends a message to the ground;
FIG. 6 is a processing flow of the inter-satellite network management center in a scenario where a user node sends a message to the ground;
FIG. 7 is a user node processing flow in a scenario where data is sent from the ground to the user node;
fig. 8 is a processing flow of the inter-satellite network management center in a scenario where data is sent to the user node from the ground.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
The invention provides a Beidou short message-based dynamic access system for a space-based backbone network, which realizes dynamic random access of the space-based backbone network by utilizing the global coverage characteristic of the Beidou short message.
The dynamic access system comprises user nodes and an inter-satellite network management center, as shown in fig. 1, each user node is provided with an inter-satellite link terminal and a Beidou message terminal, the user nodes send transmission service requests to the inter-satellite network management center by using the Beidou message terminals, and the inter-satellite network management center receives and processes the transmission service requests sent by the user nodes by using the self-mounted Beidou message terminals, completes data transmission planning of a space-based backbone network and realizes dynamic random access to the space-based backbone network.
The user node and the inter-satellite network management center interactively adopt three Beidou message data formats, namely a transmission service request short message, a link establishment information short message and a confirmation short message.
When a user node requests a transmission service, a transmission service request short message is requested, and the transmission service request short message includes a message type, user node track information, request failure time, and request transmission data volume, as shown in fig. 2, where the message type is filled with 1. And setting the time t as 60s, if the user node does not receive the link establishment information short message sent by the inter-satellite network management center within 60s, continuously sending the transmission service request short message by the user node for at most 3 times, wherein the interval is not less than 60s each time.
The link establishment information short message includes a message type, a planning result, backbone satellite node orbit information, a link establishment start time and a link establishment end time, wherein the message type is filled in 2, as shown in fig. 3. The inter-satellite network management center plans link establishment information of the space-based backbone network and the user nodes according to the link resources of the current space-based backbone network, the request failure time in the transmission service request short message and the request transmission data volume, and specifically comprises which backbone satellite node and the user node establish a link, when the link is established, the track information of the backbone satellite node and the like. If the planning is successful, the inter-satellite network management center sets the planning result in the link establishment information short message to be true, packages the link establishment information in the link establishment information short message, sends the link establishment information to the user node, and waits for the confirmation short message of the user node; if the planning fails, setting the planning result in the link establishment information short message as false, and sending the false to the user node. If the inter-satellite network management center does not receive the confirmation short message sent by the user node within 60s, the inter-satellite network management center continues to send the link establishment information short message for at most 3 times, and the interval is not less than 60s every time.
The short acknowledgement message includes the message type and acknowledgement information, as shown in fig. 4, where the message type is filled in 3. After receiving the short message of the link establishment information, the user node judges whether the starting time of the link establishment is the future time, if so, the user node sends a confirmation short message to the inter-satellite network management center, and if the confirmation message is true, the data transmission can be completed in the appointed time; if not, the confirmation message is false, and the transmission request fails.
The inter-satellite network management center can judge the content contained in the received short message according to the type of the short message. After receiving the user node confirmation short message, the inter-satellite network management center sends the link establishment information including link establishment scheduling, user node satellite orbit information and the like to the space-based backbone network, so that the user node is dynamically and randomly accessed to the space-based backbone network. The short message link is a control link, three short messages are transmitted between the message terminals through the control link, the inter-satellite link and the satellite-ground link are data transmission links, and data transmission is transmitted between the inter-satellite link terminal and the satellite-ground link terminal through the data transmission links.
The user nodes and the inter-satellite network management center need to follow corresponding dynamic access methods to realize dynamic random access of the user nodes to the space-based backbone network, and the specific dynamic access method comprises two situations of transmitting data to the ground by the user nodes and transmitting data to the user nodes from the ground.
(1) User node sends data scene to ground
Fig. 5 shows a processing flow chart of the user node in the scenario where the user node sends data to the ground.
After the user node generates a data transmission service request, a transmission service request short message is generated according to the data volume to be transmitted, the failure time of the transmission request and the satellite orbit information of the user node, and then the transmission service request short message is sent out and enters a state of waiting for receiving a link establishment information short message. And if the user node receives the short message of the link establishment information, further judging. If the user node does not receive the short message of the acknowledgement message, checking whether the user node has waited for 60s, if the waiting time is less than 60s, continuing waiting, if the waiting time exceeds 60s, the user node sends the short message of the transmission service request again. The transmission service request short message is sent for 3 times at most, and if the link establishment information short message is not received after the transmission for 3 times, the transmission request fails.
After receiving the short link establishment message sent by the inter-satellite network management center, the user node needs to confirm two conditions: whether the link establishment result identification is true or not; whether the link establishment start time is in the future.
If the two conditions are both satisfied, setting the confirmation information of the confirmation short message as true, generating the confirmation short message and sending the confirmation short message to the inter-satellite network management center. If one of the two conditions is not met, setting the confirmation information of the confirmation short message as false, generating the confirmation short message, and sending the confirmation short message to the inter-satellite network management center, wherein the transmission request fails.
If the two conditions are met, the user node establishes an inter-satellite link with the space-based backbone network at the appointed link establishment time and performs data transmission.
Fig. 6 shows a processing flow chart of the inter-satellite network management center in a scenario where the user node sends data to the ground.
After receiving a transmission request short message of a user node, the inter-satellite network management center carries out link establishment planning according to the data volume requested to be transmitted by the user node, the user request failure time and the current inter-satellite network resource use condition, if the link establishment planning is successful, namely the planned time period can finish transmitting the data volume requested by the user, and the planned transmission end time is earlier than the user request failure time, the planned result identifier of the link establishment information short message is set to be true, the link establishment information short message is generated, the link establishment information short message is sent to the user node, and the state of waiting for receiving and confirming the short message is entered. If the planning fails, the planning result is set to be false. If the inter-satellite network management center receives the short confirmation message sent by the user node, further judgment is carried out. If the inter-satellite network management center does not receive the confirmation short message, checking whether the inter-satellite network management center has waited for 60s, if the waiting time is less than 60s, continuing waiting, and if the waiting time exceeds 60s, sending the link establishment information short message again by the inter-satellite network management center. The link establishment information short message is sent for 3 times at most, and if the confirmation short message is not received after the link establishment information short message is sent for 3 times, the transmission request fails.
After receiving the confirmation short message sent by the user node, the inter-satellite network management center checks whether the confirmation information of the confirmation short message is true, and if so, the transmission negotiation between the inter-satellite network management center and the user node is successful. And then, the inter-satellite network management center sends the link establishment information to a space-based backbone network, and the space-based backbone network establishes an inter-satellite link with the user node at the appointed time and performs data transmission. If the confirmation information of the short message is confirmed to be false, the transmission negotiation between the inter-satellite network management center and the user node fails, and the processing flow is finished.
(2) Ground-based data scenario for user node
Fig. 7 shows a processing flow chart of the user node in the scenario of sending data to the user node.
The user node is always in a state of waiting for receiving the link establishment information short message, and if the user node receives the link establishment information short message, two conditions need to be confirmed: whether the link establishment result identification is true or not; whether the link establishment start time is in the future.
If the two conditions are both satisfied, setting the confirmation information of the confirmation short message as true, generating the confirmation short message and sending the confirmation short message to the inter-satellite network management center. If one of the two conditions is not satisfied, setting the confirmation information of the confirmation short message as false, generating the confirmation short message, sending the confirmation short message to the inter-satellite network management center, failing to transmit the request, and entering a state of waiting for receiving the link establishment information short message again.
If the two conditions are met, the user node establishes an inter-satellite link and performs data transmission on the space-based backbone network at the appointed link establishment time.
Fig. 8 shows a processing flowchart of the inter-satellite network management center in a scenario where data is sent from the ground to the user node.
After receiving a transmission request of a user, the inter-satellite network management center carries out link establishment planning according to the current inter-satellite network resource use condition, if the link establishment planning is successful, namely the planned time period can finish transmitting the data volume requested by the user, and the planned transmission finishing time is earlier than the user request transmission time, the planned result identification of the link establishment information short message is set to be true, the link establishment information short message is generated, the link establishment information short message is sent to a user node, and the state of waiting for receiving and confirming the short message is entered. And if the planning fails, setting the planning result as false and ending. If the inter-satellite network management center receives the short confirmation message sent by the user node, further judgment is carried out. If the inter-satellite network management center does not receive the confirmation short message, checking whether the inter-satellite network management center has waited for 60s, if the waiting time is less than 60s, continuing waiting, and if the waiting time exceeds 60s, sending the link establishment information short message again by the inter-satellite network management center. The link establishment information short message is sent for 3 times at most, and if the confirmation short message is not received after the link establishment information short message is sent for 3 times, the transmission request fails.
After receiving the confirmation short message sent by the user node, the inter-satellite network management center checks whether the confirmation information of the confirmation short message is true, and if so, the transmission negotiation between the inter-satellite network management center and the user node is successful. And then, the inter-satellite network management center sends the link establishment information to a space-based backbone network, and the space-based backbone network establishes an inter-satellite link with the user node at the appointed time and performs data transmission. If the confirmation information of the short message is confirmed to be false, the transmission negotiation between the inter-satellite network management center and the user node fails, and the processing flow is finished.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A dynamic access system of a space-based backbone network based on Beidou short messages is characterized by comprising user nodes and an inter-satellite network management center, wherein each user node sends a transmission service request to the inter-satellite network management center by using a self-mounted Beidou message terminal;
the transmission service request comprises three Beidou message data formats, namely a transmission service request short message, a link establishment information short message and a confirmation short message;
the transmission service request short message comprises a message type, user node track information, request failure time and request transmission data volume; if the user node does not receive the link establishment information short message sent by the inter-satellite network management center within the set time t, the user node continues to send the transmission service request short message and sends the transmission service request short message for n times, wherein the interval time is not less than t, and n is 1-10, and an integer is taken;
the link establishment information short message comprises a message type, a planning result, backbone satellite node orbit information, a link establishment starting moment and a link establishment ending moment; the inter-satellite network management center plans link establishment information of the space-based backbone network and the user nodes according to the link resources of the current space-based backbone network, the request failure time in the transmission service request short message and the request transmission data volume; if the inter-satellite network management center does not receive the confirmation short message sent by the user node within the set time t, the inter-satellite network management center continuously sends the link establishment information short message and sends the link establishment information short message for n times, wherein the interval time is not less than t each time;
confirming that the short message comprises a message type and confirmation information; after receiving the short message of the link establishment information, the user node judges whether the starting time of the link establishment is the future time, if so, the user node sends a confirmation short message to the inter-satellite network management center, and if the confirmation message is true, the data transmission can be completed in the appointed time; if not, the confirmation message is false, and the transmission request fails.
2. A Beidou short message-based dynamic access method of a space-based backbone network is characterized in that the Beidou short message-based dynamic access system of the space-based backbone network is adopted according to claim 1, and the specific flow of the dynamic access method is as follows:
after receiving a transmission service request of a demand party, the inter-satellite network management center plans a link establishment information of the skybrid network and the user node according to the link resource of the current skybrid network to generate a link establishment information short message; then, the inter-satellite network management center sends the link establishment information short message to the user node, and the user node sends a confirmation short message after receiving the link establishment information short message; after receiving the short message of the user node, the inter-satellite network management center sends the link establishment information to the space-based backbone network; and the space-based backbone network and the user node establish an inter-satellite link at the appointed time to complete data transmission.
3. The dynamic access method of the big dipper short message based space-based backbone network of claim 2, characterized in that if the demanding party is the user node, the user node generates a data transmission service request, then generates a transmission service request short message, and then sends the transmission service request short message to the inter-satellite network management center;
and if the demand party is the ground, the ground directly sends a transmission service request to the inter-satellite network management center.
4. A user node dynamically accessed to a space-based backbone network based on Beidou short messages is characterized in that the user node sends a transmission service request to an inter-satellite network management center by using a self-mounted Beidou message terminal, waits for receiving a processing result of the inter-satellite network management center, and establishes an inter-satellite link with the space-based backbone network at appointed time to complete data transmission;
after the user node generates a data transmission service request, generating a transmission service request short message, then sending the transmission service request short message to an inter-satellite network management center, and waiting for receiving a link establishment information short message;
after receiving the short message of the link establishment information, the user node judges whether the starting time of the link establishment is the future time, if so, the user node sends a confirmation short message to the inter-satellite network management center, and if the confirmation message is true, the user node can finish data transmission in the appointed time; if not, the confirmation message is false, and the transmission request fails.
5. An inter-satellite network management center based on dynamic access of a Beidou short message space-based backbone network is characterized in that the inter-satellite network management center receives and processes a transmission service request of a demand party by using a Beidou message terminal of the inter-satellite network management center, completes data transmission planning of the space-based backbone network and realizes dynamic random access of user nodes to the space-based backbone network;
after receiving a transmission service request of a demand party, the inter-satellite network management center plans a link establishment information between a current skybrid network and a user node according to link resources of the current skybrid network to generate a link establishment information short message and sends the link establishment information short message to the user node;
after receiving the confirmation short message sent by the user node, the inter-satellite network management center judges whether the confirmation information is true or false, and if the confirmation information is true, the inter-satellite network management center sends the link establishment information to a space-based backbone network; if the negotiation result is false, the transmission negotiation fails, and the processing flow is ended.
6. The inter-satellite network management center based on the dynamic access of the Beidou short message space-based backbone network is characterized in that if the demand party is a user node, the inter-satellite network management center receives a transmission service request short message generated by the user node;
if the demand party is the ground, the inter-satellite network management center directly receives the transmission service request of the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710913573.7A CN107835529B (en) | 2017-09-30 | 2017-09-30 | Dynamic access system, node, management center and method for space-based backbone network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710913573.7A CN107835529B (en) | 2017-09-30 | 2017-09-30 | Dynamic access system, node, management center and method for space-based backbone network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107835529A CN107835529A (en) | 2018-03-23 |
| CN107835529B true CN107835529B (en) | 2020-04-21 |
Family
ID=61647674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710913573.7A Active CN107835529B (en) | 2017-09-30 | 2017-09-30 | Dynamic access system, node, management center and method for space-based backbone network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107835529B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110972257B (en) * | 2018-09-29 | 2021-06-08 | 华为技术有限公司 | Communication method, related device and computer storage medium |
| CN109672471B (en) * | 2019-02-25 | 2020-01-14 | 中国人民解放军军事科学院国防科技创新研究院 | Space-based information distribution system and distribution method |
| CN111934748A (en) * | 2020-08-05 | 2020-11-13 | 上海卫星工程研究所 | Low-orbit satellite inter-satellite link autonomous link establishment method and system based on Beidou short message |
| CN116527109B (en) * | 2023-04-26 | 2024-02-23 | 中国人民解放军32039部队 | Method and device for space-based random access to intelligent spacecraft |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1770541A1 (en) * | 2005-10-03 | 2007-04-04 | Honeywell International Inc. | Reconfigurable network on a chip |
| CN104506280A (en) * | 2015-01-06 | 2015-04-08 | 中国人民解放军国防科学技术大学 | Reliable data transmitting method based on time division multiple access space dynamic network |
| CN105933878A (en) * | 2016-04-20 | 2016-09-07 | 福州大学 | Emergency grid information service codification interaction method based on Beidou short message |
| CN106452883A (en) * | 2016-10-21 | 2017-02-22 | 上海卫星工程研究所 | A spatial information network space-based test system and a work method thereof |
| CN106452560A (en) * | 2016-09-23 | 2017-02-22 | 北京工业大学 | Backbone satellite node and ground station-based communication system |
| CN106646557A (en) * | 2016-12-26 | 2017-05-10 | 北京国交信通科技发展有限公司 | Beidou satellite based augmentation system and short message function-based marine monitoring buoy |
-
2017
- 2017-09-30 CN CN201710913573.7A patent/CN107835529B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1770541A1 (en) * | 2005-10-03 | 2007-04-04 | Honeywell International Inc. | Reconfigurable network on a chip |
| CN104506280A (en) * | 2015-01-06 | 2015-04-08 | 中国人民解放军国防科学技术大学 | Reliable data transmitting method based on time division multiple access space dynamic network |
| CN105933878A (en) * | 2016-04-20 | 2016-09-07 | 福州大学 | Emergency grid information service codification interaction method based on Beidou short message |
| CN106452560A (en) * | 2016-09-23 | 2017-02-22 | 北京工业大学 | Backbone satellite node and ground station-based communication system |
| CN106452883A (en) * | 2016-10-21 | 2017-02-22 | 上海卫星工程研究所 | A spatial information network space-based test system and a work method thereof |
| CN106646557A (en) * | 2016-12-26 | 2017-05-10 | 北京国交信通科技发展有限公司 | Beidou satellite based augmentation system and short message function-based marine monitoring buoy |
Non-Patent Citations (3)
| Title |
|---|
| 北斗的下一个机遇—基于星基LPWAN的物联网体系;蔺陆洲、阚志峰;《卫星应用》;20161231;47-51页 * |
| 天地一体化信息网络天基物联网应用体系研究;曾业，周永将;《现代导航》;20161015(第5期);372-376 * |
| 天基物联网技术发展与应用研究;王晓海;《卫星与网络》;20170831;64-69页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107835529A (en) | 2018-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107835529B (en) | Dynamic access system, node, management center and method for space-based backbone network | |
| US7031708B2 (en) | System and method for connecting multicast or broadcast control information to mobile stations | |
| US6791962B2 (en) | Direct link protocol in wireless local area networks | |
| TWI710279B (en) | End-to-end data transmission method, apparatus, and system | |
| EP3476106B1 (en) | Method for transferring signaling messages of terminal between network functions | |
| CN109672708B (en) | Communication method, device and system | |
| CN110808948B (en) | Remote procedure calling method, device and system | |
| KR20200125274A (en) | METHOD FOR SUPPORTING DEVICE TO DEVICE COMMUNICATION THROUGH BROADCAST AND GROUPCAST BASED ON QoS FLOW IN WIRELESS COMMUNICATION SYSTEM | |
| CN108432311A (en) | A kind of resource request method, equipment, network side node and system | |
| CN104410982A (en) | Terminal aggregation and refactoring method in wireless heterogeneous network | |
| CN110831213A (en) | Resource scheduling method, terminal and network equipment | |
| CN101631127A (en) | File transfer method and clients | |
| CN114189949A (en) | Connection establishment method and equipment for layer 2 UE to network relay | |
| WO2006066487A1 (en) | Method and system for implementing information transmission | |
| CN113905349A (en) | Networking method, device and system | |
| TWI744329B (en) | Data transmission method, equipment and system | |
| CN110291839B (en) | Unicast connection establishment method, device and storage medium | |
| Bedon et al. | A DTN system for nanosatellite-based sensor networks using a new ALOHA multiple access with gateway priority | |
| CN103997796A (en) | Method for processing service data | |
| CN110944305B (en) | Data transmission method of V2X dual-mode terminal, 4G base station and terminal | |
| CN106790639B (en) | Data transmission method and system | |
| CN113573252B (en) | Data transmission method, system, chip, electronic device and storage medium | |
| JP2002124953A (en) | Wireless packet relay method, system thereof and wireless station | |
| US20200267075A1 (en) | Data transmission method, device, and system | |
| CN114567363A (en) | Method for information interaction between satellites and satellite |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |