CN-122002547-A - Data transmission method, device, equipment and storage medium

Abstract

The application provides a data transmission method, a device, equipment and a storage medium, and relates to the technical field of satellite communication; the method comprises the steps of obtaining a target frame structure, wherein the target frame structure comprises a TDD period and a SBFD period, sending first scheduling information to a first wave bit and sending second scheduling information to a second wave bit, wherein the first scheduling information is used for indicating data transmission in the TDD period, and the second scheduling information is used for indicating data transmission in the SBFD period. And SBFD time periods are added in the frame structure, so that the time resources of the frame structure are fully utilized, and the satellite equipment can serve more wave positions and UE in the wave positions. The complementary irradiation of the wave position is realized through SBFD time periods, more RO can be distributed in the current wave position complementary irradiation time period, the UE carries out random access through the RO, the access time delay is reduced, and meanwhile, the UE and the satellite equipment can carry out signaling transmission and business data transmission in the current wave position complementary irradiation time period, and the transmission time delay is reduced.

Inventors

• JIAO LINGXIAO
• LIU XIANLING
• TONG JIANFEI

Assignees

• 上海卫星互联网研究院有限公司

Dates

Publication Date

20260508

Application Date

20241106

Claims (17)

1. 1. A data transmission method for use with a satellite device in a satellite communications system, the method comprising: obtaining a target frame structure, wherein the target frame structure comprises a Time Division Duplex (TDD) period and a sub-band full duplex (SBFD) period; And transmitting first scheduling information to the first wave bit and second scheduling information to the second wave bit, wherein the first scheduling information is used for indicating data transmission in the TDD time period, and the second scheduling information is used for indicating data transmission in the SBFD time period.
2. 2. The method of claim 1, wherein the TDD time period comprises a TDD uplink time period and a TDD downlink time period, and wherein the SBFD time period is located between the TDD uplink time period and the TDD downlink time period.
3. 3. The method of claim 1 or 2, wherein the length of the SBFD period is related to a guard interval length in an initial frame structure, the initial frame structure including the TDD period and the guard interval.
4. 4. The method of claim 1 or 2, wherein the SBFD periods comprise at least one period, each period associated SBFD band comprising at least one of an uplink, UL, sub-band for uplink transmission, a downlink, DL, sub-band for downlink reception.
5. 5. The method of claim 1, wherein the method further comprises: The radio frame for transmitting the first scheduling information to the first wave bit is different from the radio frame for transmitting the second scheduling information to the second wave bit spatially adjacent to the first wave bit.
6. 6. The method of claim 1, wherein the second scheduling information is to indicate: The second wave bit is used for carrying out data transmission on the UL sub-band and the DL sub-band which are associated in the first period of SBFD periods, or The second wave bit performs uplink data transmission in a UL sub-band associated with a first period of the SBFD period, and performs downlink data transmission in a DL sub-band associated with a second period of the SBFD period, wherein the first period and the second period do not overlap.
7. 7. The method of claim 1, wherein the second scheduling information is to indicate: The same terminal UE in the second wave position performs data transmission in the UL sub-band and the DL sub-band associated with the first time period of SBFD time periods, or And the first terminal in the second wave bit performs uplink data transmission in a UL sub-band associated with a first time period of the SBFD time period, and performs downlink data transmission in a DL sub-band associated with a second time period of the SBFD time period, wherein the first time period and the second time period are not overlapped.
8. 8. The method of claim 1, wherein after the obtaining the target frame structure, transmitting the first scheduling information to the first wave bit, and before transmitting the second scheduling information to the second wave bit, further comprising: configuring time domain position information associated with the TDD period to the UE in the first wave position; And configuring time domain position information associated with the SBFD time period to the UE in the second wave position.
9. 9. The method of claim 8, wherein after the configuring the time domain location information associated with the SBFD periods to UEs within the second wave bit comprises: Configuring the SBFD-period-associated sub-band frequency domain location to the UE in the second band by a system message, or Configuring the SBFD-period-associated subband-frequency domain position to the UE in the second band by Radio Resource Control (RRC) signaling, or Configuring the subband frequency domain position associated with the SBFD time period to the UE in the second wave position through downlink control information DCI; wherein the subbands include at least one of DL subbands, UL subbands, and guard subbands.
10. 10. The method of claim 1, wherein prior to transmitting the second scheduling information to the second wave bit, further comprising: and receiving target information which is reported by the UE and has SBFD perception capability by the characterization.
11. 11. A data transmission method, applied to a terminal device UE in a satellite communication system, the method comprising: The method comprises the steps of receiving first scheduling information or second scheduling information, wherein the first scheduling information is used for indicating data transmission in a TDD period, and the second scheduling information is used for indicating data transmission in a SBFD period; and carrying out data transmission in the TDD time period or SBFD time period.
12. 12. The method of claim 11, wherein the transmitting data over the TDD period or the SBFD period comprises: If the UE is located in the first wave bit, data transmission is carried out in the TDD period; and if the UE is positioned in the second wave position and the UE has SBFD perception capability, carrying out data transmission on the SBFD time period.
13. 13. A data transmission apparatus for use with a satellite device in a satellite communications system, the apparatus comprising: An obtaining unit, configured to obtain a target frame structure, where the target frame structure includes a time division duplex TDD period and a subband full duplex SBFD period; The device comprises a transmitting unit, a transmitting unit and a receiving unit, wherein the transmitting unit is used for transmitting first scheduling information to a first wave bit and transmitting second scheduling information to a second wave bit, the first scheduling information is used for indicating data transmission in the TDD time period, and the second scheduling information is used for indicating data transmission in the SBFD time period.
14. 14. A data transmission apparatus for use with a UE in a satellite communication system, the apparatus comprising: the device comprises a receiving unit, a transmitting unit and a receiving unit, wherein the receiving unit is used for receiving first scheduling information or second scheduling information, the first scheduling information is used for indicating data transmission in a TDD period, and the second scheduling information is used for indicating data transmission in a SBFD period; And the transmission unit is used for carrying out data transmission in the TDD time period or the SBFD time period.
15. 15. 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 one of claims 1-10 or the steps of the method of any one of claims 11-12.
16. 16. 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 one of claims 1-10 or to perform the steps of the method of any one of claims 11-12 when said computer program is run on the electronic device.
17. 17. A computer program product comprising computer program code to, when run on a computer, cause the computer to perform the steps of the method as claimed in any one of the preceding claims 1-10 or to perform the steps of the method as claimed in any one of the claims 11-12.

Description

Data transmission 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 data transmission method, a device, equipment and a storage medium. Background In the same frequency band, uplink signals of multiple users need to arrive at the satellite device at the same time to meet the requirement of an orthogonal frequency division multiple access (Orthogonal Frequency-Division Multiple Access, OFDMA) system for user symbol alignment. In order to prevent interference generated in uplink and downlink communications by relatively close-spaced terminal Equipment (UE), a frame structure is proposed in a time division duplex (Time Division Duplex, TDD) satellite communication system, in which a guard interval is set between uplink and downlink transmissions. During the guard interval of the frame structure, the satellite device will not perform any uplink or downlink data transmission, i.e. the satellite device in the guard interval cannot perform uplink or downlink transmission, resulting in resource waste. And under the frame structure, only the half duplex working mode of the UE is supported, namely the UE performs downlink reception in the downlink time period of the frame structure and performs uplink transmission in the uplink time period of the frame structure. At this time, there is a shortage of random access opportunities (Random Access Occasion, RO), and after the UE in the wave position initiates random access, it needs to wait for a certain period of time before the satellite wave position irradiates the wave position, which results in a long UE access time. Therefore, how to improve the resource utilization and reduce the access delay is a technical problem to be solved at present. Disclosure of Invention The embodiment of the application provides a data transmission method, a data transmission device, electronic equipment and a storage medium, which are used for improving the resource utilization rate and reducing the access time delay in a satellite communication system. In a first aspect, an embodiment of the present application provides a data transmission method, which is applied to a satellite device in a satellite communication system, where the method includes: obtaining a target frame structure, wherein the target frame structure comprises a TDD period and a Sub-Band Full Duplex (SBFD) period; and transmitting first scheduling information to the first wave bit and second scheduling information to the second wave bit, wherein the first scheduling information is used for indicating data transmission in a TDD period, and the second scheduling information is used for indicating data transmission in a SBFD period. In one implementation, the TDD time period includes a TDD uplink time period and a TDD downlink time period, and SBFD time periods are located between the TDD uplink time period and the TDD downlink time period. In one implementation, the length of SBFD periods is related to the guard interval length in the initial frame structure, which includes the TDD period and the guard interval. In one implementation, the SBFD periods include at least one period, each period associated SBFD band including at least one of an uplink (UP Link, UL) sub-band for uplink transmission, a DownLink (DL) sub-band for DownLink reception. In one implementation, a radio frame that transmits first scheduling information to a first wave bit is different from a radio frame that transmits second scheduling information to a second wave bit spatially adjacent to the first wave bit. In one implementation, the second scheduling information is used to indicate: the second wave bit is used for data transmission in the UL sub-band and the DL sub-band which are associated in the first time period of SBFD time periods, or The second wave bit carries out uplink data transmission in a UL sub-band associated with a first time period of SBFD time periods, and the second wave bit carries out downlink data transmission in a DL sub-band associated with a second time period of SBFD time periods, wherein the first time period and the second time period are not overlapped. In one implementation, the second scheduling information is used to indicate: the same terminal UE in the second wave position performs data transmission on the UL sub-band and the DL sub-band associated with the first time period of SBFD time periods, or The first terminal in the second wave position carries out uplink data transmission in the UL sub-band associated with the first time period of SBFD time periods, and the first terminal carries out downlink data transmission in the DL sub-band associated with the second time period of SBFD time periods, wherein the first time period and the second time period are not overlapped. In one implementation, after obtaining the target frame structure, the method further includes, before sending the first sch