CN113660031A - Agile spot beam bidirectional collaborative polling method for satellite signaling - Google Patents
Agile spot beam bidirectional collaborative polling method for satellite signaling Download PDFInfo
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- CN113660031A CN113660031A CN202111033136.9A CN202111033136A CN113660031A CN 113660031 A CN113660031 A CN 113660031A CN 202111033136 A CN202111033136 A CN 202111033136A CN 113660031 A CN113660031 A CN 113660031A
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Abstract
The invention discloses a bidirectional collaborative polling method for agile spot beams for satellite signaling, which comprises the following steps: step 1, a ground station sends a forward returning wave beam hopping pattern to a satellite through a load service control channel, a wave beam hopping controller of the satellite demodulates a forward returning wave beam hopping control command pattern, and wave beams hop wave positions according to the command; step 2, the forward wave beam polls each wave position of the ground in turn to provide broadcast signaling, when the wave position of the user terminal receives the forward wave beam, the frame duration of one or a plurality of wave beams is delayed fixedly, the backward wave beam is scheduled to poll the wave position, and the transmission of the backward signaling data is carried out; and 3, under the condition that the numbers of the forward beams and the backward beams are not equal, the optimal matching of the forward beam resources and the backward beam resources is achieved by cross polling of each wave position. The invention can set the forward wave beam and the backward wave beam of the satellite as the flexibly hopping wave beams, and utilizes the satellite resources in a cooperative and efficient manner.
Description
Technical Field
The invention relates to the technical field of satellite communication, in particular to a bidirectional collaborative polling method for agile spot beams for satellite signaling.
Background
With the development of satellite networks, the application of satellite-based networks is becoming more and more common. The satellite network is an important supplement of the ground network, and can provide services such as internet access, emergency communication and the like for users at sides, scattered places and far places. In conventional multi-beam satellite communication systems, fixed beam coverage is typically used to serve surface users. For example, in an HTS (High Throughput Satellite) system, the direction and coverage of Satellite beams are fixed, and the power and time-frequency resources allocated to each beam are generally constant. However, in the satellite communication system, the communication service types and service requirements of different users are various, the space-time distribution is uneven, and the communication requirements of users in different areas and at different times are varied, which all put higher demands on the scheduling service capability and the comprehensive utilization of resources of the satellite communication network. Therefore, the traditional fixed beam coverage mode will result in low resource utilization rate, limited communication application scenarios, and the network as a whole is not flexible enough, and cannot meet the requirements of communication services on flexibility and variability.
With the development of phased array technology, agile spot beams are a technology capable of flexibly utilizing satellite resources in a multi-beam satellite system. The core idea is as follows: the satellite resource allocation is not fixed, the wave beams are driven according to the actual requirements of users as required, and coverage can be quickly formed through the characteristic that the phased array wave beams can be flexibly and quickly changed, so that service is provided. Therefore, the resource utilization is more flexible and efficient. Under the scene of a multi-beam satellite system, the agile spot beam can be used for effectively matching the service requirement of a user with resources of different beams of the satellite, so that the overall use efficiency of the satellite is improved.
Satellite links can be divided into forward links, which are ground station to satellite to user terminal links, and return links, which are user to satellite to ground station links. However, in the prior art, the utilization efficiency of the beams cannot be fully utilized in the utilization of the agile beams, and the system interaction is complex and not concise. Meanwhile, the forward beams and the return beams of the satellite are not equal in number under normal conditions, and the forward/return cooperation cannot achieve the optimal system efficiency in the prior art. Therefore, how to design a agile spot beam bidirectional cooperative polling method for satellite signaling becomes an urgent problem to be solved in a communication network.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a bidirectional cooperative polling method of agile spot beams for satellite signaling, wherein both the forward beams and the return beams of a satellite are set as beams which can flexibly jump, and satellite resources are utilized in a cooperative and efficient manner.
In a first aspect, the present invention provides a bidirectional cooperative polling method for agile spot beams for satellite signaling, which achieves optimal matching of beam resources by cooperative interaction between a user terminal and a ground station, and comprises the following steps:
step 1, a ground station sends a forward returning wave beam hopping pattern to a satellite through a load service control channel, a wave beam hopping controller of the satellite demodulates a forward returning wave beam hopping control command pattern, and wave beams hop wave positions according to the command;
and the forward return beam hopping pattern is a forward return beam hopping time schedule generated by resource allocation of the ground station according to the user service requirement of the coverage area.
Further, the payload traffic management channel is an individual carrier divided by an independent traffic beam or feeder link.
Step 2, the forward wave beam polls each wave position of the ground in turn to provide broadcast signaling, when the wave position of the user terminal receives the forward wave beam, the frame duration of one or a plurality of wave beams is delayed fixedly, the backward wave beam is scheduled to poll the wave position, and the transmission of the backward signaling data is carried out;
wherein, the dwell time at a wave position is a beam frame duration.
And 3, under the condition that the numbers of the forward beams and the backward beams are not equal, the optimal matching of the forward beam resources and the backward beam resources is achieved by cross polling of each wave position.
Further, the cross polling method specifically includes: firstly, a system coverage area is totally divided into N wave positions, the number of forward wave beams is A, the number of return wave beams is B, the wave positions of a system forward link are divided into A groups and N/A wave beams of each group, and the wave positions of the system return link are divided into B groups and N/B wave beams of each group; then, the system forwards A beams, each beam polls in A groups of wave positions at the same time, each group of polling time is N/A beam hopping frames, the system returns B beams, each beam polls in B groups of wave positions at the same time, and each group of polling time is N/B beam hopping frames.
In a second aspect, the present invention provides an apparatus for bidirectional cooperative polling of agile spot beams for satellite signaling, including: a processor, a memory for storing processor-executable instructions.
Wherein the processor is configured to perform the agile spot beam bidirectional cooperative polling method for satellite signaling of the first aspect.
In a third aspect, the present invention protects a non-transitory computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the agile spot beam bidirectional cooperative polling method for satellite signaling of the first aspect described above.
The invention has the beneficial effects that: 1. the invention designs a bidirectional collaborative polling method of agile spot beams for satellite signaling, wherein a forward beam and a return beam of a satellite are both set as beams which can flexibly jump, and satellite resources are utilized in a collaborative and efficient manner; 2. the invention enables the forward/backward collaboration to achieve the optimal system efficiency under the condition that the quantity of the satellite forward wave beams and the quantity of the satellite backward wave beams are not equal.
Drawings
FIG. 1 is a schematic flow chart diagram of a method of agile spot beam two-way cooperative polling for satellite signaling;
FIG. 2 is a schematic diagram of a agile spot beam for two-way coordination in embodiment 1;
fig. 3 is a bidirectional coordination timing chart of the forward return beam in embodiment 1.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Example 1
The present embodiment specifically explains the technical solution (as shown in fig. 1) of the present invention by taking a satellite network as an example to provide broadband service for users.
A bidirectional cooperative polling method for agile spot beams for satellite signaling, wherein a satellite network provides broadband services for users, as shown in fig. 2, the satellite communication network has 1 forward beam, 2 backward beams, and a coverage area with 6 wave positions, each 3 wave positions is a beam cluster and a total of 2 beam clusters, wherein the wave positions 1, 3, and 5 form the beam cluster 1, and the wave positions 2, 4, and 6 form the beam cluster 2. The method comprises the following steps:
firstly, a ground station sends a forward returning beam hopping pattern to a satellite through a load service control channel, a beam hopping controller of the satellite demodulates a forward returning beam hopping control command pattern, and a beam carries out hopping of a wave position according to a command to realize synchronous flexible hopping of beam resources on the satellite;
and the forward return beam hopping pattern is a forward return beam hopping time schedule generated by resource allocation of the ground station according to the user service requirement of the coverage area.
Specifically, the payload traffic management channel is an individual carrier divided by an independent traffic beam or feeder link.
Then, the forward wave beam polls each wave position on the ground in sequence, the residence time of one wave position is a wave beam frame duration T, when the wave position where the terminal is located receives the forward wave beam, the duration of 2 wave beam frames is delayed fixedly, the backward wave beam is scheduled to poll the wave position, and the transmission of the backward signaling data is carried out.
And finally, under the condition that the numbers of the forward beams and the backward beams are not equal, the optimal matching of the forward beam resources and the backward beam resources is achieved by cross polling of each wave position.
Specifically, the cross polling method is as follows: according to 6 wave positions of which the service area is divided, the number of forward and backward beams is 1 and 2 respectively, 1 forward beam uniformly polls each wave position, the visiting sequence is 1,2,3,4,5 and 6, for 2 backward beams, in order to ensure that the service time of 3 wave positions covered by each beam does not conflict, the first beam covers the wave positions 1, 3 and 5, and the second beam covers the wave positions 2, 4 and 6, see table 1.
TABLE 1 agile spot beam system wave potential table
Table 2 time scheme for cooperative polling of forward-returning bidirectional beams
A time scheme of forward return beams in cooperation with polling wave positions is further obtained according to the return beam coverage scheme of table 1, see table 2, where T is a beam frame duration, forward beams poll each wave position in sequence, and the dwell time of each wave position is T, so that the earth surface area is polled according to wave positions 1,2,3,. and 6. After the forward beam polls to wave position 1 and delays for 2 frames, the system schedules the backward beam 1 to cover the wave position 1 to serve the users in the area, and after delaying for 3 frames, schedules the backward beam 2 to cover the wave position 2 to serve the users in the area, and then the process is carried out in sequence. As shown in fig. 3, the backward beam 1 covers the wave positions 1, 3, 5, and so on, and the backward beam 2 covers the wave positions 2, 4, 6, and so on. Since the number of the backward beams is 2 times of that of the forward beams, the dwell time of the backward beams at each wave position can be increased by one frame duration, namely 2T, thereby increasing the number of the backward access users. By the cross polling mode, the forward/backward cooperation achieves the optimal system efficiency.
Example 2
Corresponding to the agile spot beam bidirectional cooperative polling method for satellite signaling in embodiment 1, an embodiment of the present invention provides an agile spot beam bidirectional cooperative polling apparatus for satellite signaling, including: a processor, a memory for storing processor-executable instructions.
Wherein the processor is configured to perform the agile spot beam bidirectional cooperative polling method for satellite signaling of the first aspect.
Example 3
The present embodiment provides a non-transitory computer-readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method of embodiment 1 described above.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by one of ordinary skill in the art and related arts based on the embodiments of the present invention without any creative effort, shall fall within the protection scope of the present invention.
Claims (5)
1. A bidirectional cooperative polling method of agile spot beams for satellite signaling achieves the optimal matching of beam resources through cooperative interaction of a user terminal and a ground station, and comprises the following steps:
step 1, a ground station sends a forward returning wave beam hopping pattern to a satellite through a load service control channel, a wave beam hopping controller of the satellite demodulates a forward returning wave beam hopping control command pattern, and wave beams hop wave positions according to the command;
the forward return beam hopping pattern is a forward return beam hopping time schedule generated by resource allocation of the ground station according to user service requirements of a coverage area;
step 2, the forward wave beam polls each wave position of the ground in turn to provide broadcast signaling, when the wave position of the user terminal receives the forward wave beam, the frame duration of one or a plurality of wave beams is delayed fixedly, the backward wave beam is scheduled to poll the wave position, and the transmission of the backward signaling data is carried out;
wherein, the dwell time at a wave position is a wave beam frame duration;
and 3, under the condition that the numbers of the forward beams and the backward beams are not equal, the optimal matching of the forward beam resources and the backward beam resources is achieved by cross polling of each wave position.
2. The bidirectional cooperative polling method for satellite signaling with agile spot beams according to claim 1, wherein in step 1, the payload traffic control channel is a separate carrier divided by independent traffic beams or feeder links.
3. The bidirectional cooperative polling method for satellite signaling with agile spot beams according to claim 1, wherein the cross polling manner specifically comprises: firstly, a system coverage area is totally divided into N wave positions, the number of forward wave beams is A, the number of return wave beams is B, the wave positions of a system forward link are divided into A groups and N/A wave beams of each group, and the wave positions of the system return link are divided into B groups and N/B wave beams of each group; then, the system forwards A beams, each beam polls in A groups of wave positions at the same time, each group of polling time is N/A beam hopping frames, the system returns B beams, each beam polls in B groups of wave positions at the same time, and each group of polling time is N/B beam hopping frames.
4. An apparatus for bidirectional cooperative polling with agile spot beams for satellite signaling, comprising: a processor, a memory for storing processor-executable instructions;
wherein the processor is configured to perform the agile spot beam two-way collaborative polling method for satellite signaling of any one of claims 1-3.
5. A non-transitory computer readable storage medium having stored thereon computer program instructions, wherein the computer program instructions, when executed by a processor, implement the agile spot beam bidirectional cooperative polling method for satellite signaling according to any one of claims 1-3.
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| CN115085797A (en) * | 2022-06-21 | 2022-09-20 | 天地信息网络研究院(安徽)有限公司 | Hop wave beam resource allocation method based on service distribution |
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