CN-122002503-A - Frame format scheduling method, device, equipment and storage medium

CN122002503ACN 122002503 ACN122002503 ACN 122002503ACN-122002503-A

Abstract

The application provides a frame format scheduling method, a device, equipment and a storage medium, relates to the technical field of satellite communication, and is applied to a TDD satellite communication system to improve the utilization rate of air interface resources on the basis of realizing time alignment of a receiving side. The method comprises the steps of obtaining a first wave bit group and a second wave bit group, wherein the scheduling frame formats of the first wave bit group and the second wave bit group are different, respectively sending frame scheduling information to terminal equipment in the corresponding wave bit group based on the scheduling frame formats associated with the different wave bit groups, and the frame scheduling information is used for indicating the terminal equipment to schedule resources in a target frame structure for data transmission.

Inventors

LIU XIANLING
YAN HONG
LI JIFENG
TONG JIANFEI
JIAO LINGXIAO

Assignees

上海卫星互联网研究院有限公司

Dates

Publication Date: 20260508
Application Date: 20241106

Claims (15)

1. A frame format scheduling method, applied to a star station device in a time division duplex TDD satellite communication system, the method comprising: Obtaining a first wave bit group and a second wave bit group, wherein the scheduling frame formats of the first wave bit group and the second wave bit group are different; And respectively sending frame scheduling information to the terminal equipment in the corresponding wave bit group based on the scheduling frame formats associated with different wave bit groups, wherein the frame scheduling information is used for indicating the terminal equipment to schedule resources in a target frame structure for data transmission.
2. The method of claim 1, wherein the scheduling frame format is related to a maximum round trip time RTT and uplink and downlink traffic time slot requirements of a corresponding wave-packet, wherein RTT of the wave-packet is related to a target distance and a speed of light, and wherein the target distance is a distance between a coverage point within a coverage area of the star device and the star device.
3. The method of claim 2, wherein the scheduling frame format is associated with a flexible number of slots and a flexible slot start position, and a symbol pre-configuration for each flexible slot, wherein the flexible number of slots is associated with the maximum RTT, and wherein the flexible slot start position is associated with the uplink and downlink traffic slot requirements.
4. The method of claim 2, wherein the number of uplink and downlink timeslots corresponding to the uplink and downlink traffic timeslot requirements is greater than or equal to the number of uplink and downlink reserved common resources, and the uplink and downlink reserved common resources are related to the number of SSB beams of the synchronization signal block supported by the coverage area of the star station device.
5. The method of claim 1, wherein the sending frame scheduling information to the terminal devices in the corresponding wave-bit groups based on the scheduling frame formats associated with the different wave-bit groups, respectively, comprises: When the flexible time slot number in the scheduling frame format associated with the wave-bit group is larger than the flexible time slot number in the target frame format, sending frame scheduling information carrying a transmission-allowed uplink PermitTranUL field to terminal equipment in the wave-bit group; the PermitTranUL field is used for indicating the terminal equipment to ignore downlink reception and allow uplink transmission on a downlink time slot before a first flexible time slot in the target frame format after receiving the frame scheduling information.
6. The method of claim 1, wherein the sending frame scheduling information to the terminal devices in the corresponding wave-bit groups based on the scheduling frame formats associated with the different wave-bit groups, respectively, comprises: and when the RTT associated with the wave bit in the wave bit group is smaller than a set RTT threshold, sending frame scheduling information for carrying out data transmission by utilizing the flexible time slot in the target frame format to the terminal equipment on the wave bit.
7. The method according to any one of claims 1-6, wherein before the sending of the frame scheduling information to the terminal devices in the corresponding wave-bit groups, respectively, based on the scheduling frame formats associated with the different wave-bit groups, further comprises: And transmitting the target frame format to all terminal equipment in the coverage area of the star station equipment, wherein the target frame format is a scheduling frame format associated with a wave bit group with minimum RTT.
8. A frame format scheduling apparatus for use in a star station device in a TDD satellite communication system, the apparatus comprising: an obtaining unit, configured to obtain a first wave bit group and a second wave bit group, where the scheduling frame formats of the first wave bit group and the second wave bit group are different; And the sending unit is used for respectively sending frame scheduling information to the terminal equipment in the corresponding wave bit group based on the scheduling frame formats associated with different wave bit groups, wherein the frame scheduling information is used for indicating the terminal equipment to schedule resources in a target frame structure for data transmission.
9. The apparatus of claim 8, wherein the schedule frame format is associated with a flexible number of slots and a flexible slot start position, and a symbol pre-configuration for each flexible slot, the flexible number of slots being associated with a maximum RTT for a corresponding wave-bit group, the flexible slot start position being associated with uplink and downlink traffic slot requirements.
10. The apparatus of claim 8, wherein the transmitting unit is specifically configured to: when the flexible time slot number in the scheduling frame format associated with the wave-bit group is larger than the flexible time slot number in the target frame format, sending frame scheduling information carrying PermitTranUL fields to terminal equipment in the wave-bit group; the PermitTranUL field is used for indicating the terminal equipment to ignore downlink reception and allow uplink transmission on a downlink time slot before a first flexible time slot in the target frame format after receiving the frame scheduling information.
11. The apparatus of claim 8, wherein the transmitting unit is specifically configured to: and when the RTT associated with the wave bit in the wave bit group is smaller than a set RTT threshold, sending frame scheduling information for carrying out data transmission by utilizing the flexible time slot in the target frame format to the terminal equipment on the wave bit.
12. The apparatus according to any of claims 8-11, wherein the sending unit is further configured to: And transmitting the target frame format to all terminal equipment in the coverage area of the star station equipment before transmitting frame scheduling information to the terminal equipment in the corresponding wave bit group based on the scheduling frame formats associated with different wave bit groups, wherein the target frame format is the scheduling frame format associated with the wave bit group with the minimum RTT.
13. An electronic device comprising a processor and a memory, wherein the memory stores a computer program which, when executed by the processor, causes the processor to perform the steps of the method of any of claims 1-7.
14. A computer readable storage medium, characterized in that it comprises a computer program for causing an electronic device to perform the steps of the method of any of claims 1-7 when said computer program is run on the electronic device.
15. A computer program product, characterized in that it comprises computer program code means for causing a computer to carry out the steps of the method as claimed in any one of the preceding claims 1-7 when said computer program code means are run on a computer.

Description

Frame format scheduling method, device, equipment and storage medium Technical Field The embodiment of the application relates to the technical field of satellite communication, in particular to a frame format scheduling method, a device, equipment and a storage medium. Background In a New air-interface (NR) Time division duplex (Time Division Duplex, TDD) system, due to the existence of a spatial propagation delay, a Time transmitted by a base station (Next GenerationNode B, gNB) side and a Time received by a terminal device (UserEquipment, UE) side cannot be aligned, so a Guard Period (GP) is set in a TDD frame format, the base station does not transmit and receive in the GP, and the GP length is equal to or greater than a Round-Trip Time (RTT) between the base station and the UE. However, for a TDD satellite communication system, the coverage radius of the coverage area of the star station device is obviously increased compared with that of a ground system, and the RTT time delay between the star and the ground is also obviously increased, so that a larger GP needs to be reserved in uplink and downlink data transmission, and the utilization rate of air interface resources is greatly reduced. Therefore, in the TDD satellite communication system, on the basis of realizing time alignment of the transmitting side, improving the utilization rate of air interface resources is a technical problem to be solved at present. Disclosure of Invention The embodiment of the application provides a frame format scheduling method, a device, equipment and a storage medium, which are used for improving the utilization rate of air interface resources on the basis of realizing time alignment of a receiving side and a transmitting side in a TDD satellite communication system. In a first aspect, an embodiment of the present application provides a frame format scheduling method, which is applied to a star station device in a TDD satellite communication system, where the method includes: Obtaining a first wave bit group and a second wave bit group, wherein the scheduling frame formats of the first wave bit group and the second wave bit group are different; Based on the dispatch frame formats associated with different wave-bit groups, respectively sending frame dispatch information to the terminal equipment in the corresponding wave-bit group, wherein the frame dispatch information is used for indicating the terminal equipment to dispatch the resources in the target frame structure for data transmission. In one implementation, the scheduling frame format is related to the maximum RTT of the corresponding wave bit group and the uplink and downlink traffic time slot requirement, and the RTT of the wave bit group is related to the target distance and the speed of light, wherein the target distance is the distance between a coverage point in the coverage area of the star station equipment and the star station equipment. In one implementation, the scheduling frame format is related to a flexible slot number and a flexible slot start position, and symbol pre-configuration of each flexible slot, the flexible slot number is related to a maximum RTT, and the flexible slot start position is related to uplink and downlink traffic slot requirements. In one implementation, the number of uplink and downlink time slots corresponding to the uplink and downlink traffic time slot requirements is greater than or equal to the number of uplink and downlink reserved common resources, and the uplink and downlink reserved common resources are related to the number of synchronous signal blocks (Synchronization Signal Block, SSB) beams supported by the coverage area of the star station equipment. In one implementation, based on the scheduling frame formats associated with different wave-bit groups, respectively sending frame scheduling information to terminal devices in corresponding wave-bit groups, including: When the flexible time slot number in the scheduling frame format associated with the wave bit group is larger than the flexible time slot number in the target frame format, sending frame scheduling information carrying PermitTranUL fields to terminal equipment in the wave bit group; The PermitTranUL field is used for indicating the terminal equipment to ignore downlink reception and allow uplink transmission on a downlink time slot before a first flexible time slot in the target frame format after receiving the frame scheduling information. In one implementation, based on the scheduling frame formats associated with different wave-bit groups, respectively sending frame scheduling information to terminal devices in corresponding wave-bit groups, including: And when the RTT associated with the wave bit in the wave bit group is smaller than the set RTT threshold, sending frame scheduling information for carrying out data transmission by utilizing the flexible time slot in the target frame format to the terminal equipment on the wave bit. In one implem