CN-122002501-A - Uplink channel time synchronization device, method, equipment, medium and program product

Abstract

The application relates to the satellite wireless communication field and provides an uplink channel time synchronization device, a method, equipment, a medium and a program product, wherein the device comprises a first storage module, a second storage module and a first buffer module, wherein the first storage module is used for buffering received first data; the first processing module is used for processing second data in the first storage module to obtain a first time delay estimated value, and processing third data in the first storage module based on the first time delay estimated value, wherein the second data is part of the first data, and the third data is residual data taking the first time delay estimated value as a starting position in the first data. The application combines data caching and time delay correction, and can meet the application scene that the terminal equipment is directly connected with the network equipment in any scene by adopting the uplink channel time synchronization device under the condition that the terminal equipment does not change.

Inventors

• GU LINHAI

Assignees

• 重庆星网网络系统研究院有限公司

Dates

Publication Date

20260508

Application Date

20241105

Claims (20)

1. 1. An uplink channel time synchronization apparatus, the apparatus being applied to a network device, comprising: The first storage module is used for caching the received first data; The first processing module is used for processing second data in the first storage module to obtain a first time delay estimated value, and processing third data in the first storage module based on the first time delay estimated value, wherein the second data is part of the first data, and the third data is residual data taking the first time delay estimated value as a starting position in the first data.
2. 2. The uplink channel time synchronization device according to claim 1, wherein the first processing module comprises: the first computing unit is used for processing the second data to obtain first processed data; And the second calculation unit is used for processing the first processing data to obtain a first time delay estimated value.
3. 3. The uplink channel time synchronization apparatus according to claim 2, wherein the second calculation unit performs a correlation operation on the first processed data based on the DMRS to obtain the first delay estimation value.
4. 4. The uplink channel time synchronization device according to claim 3, wherein the second calculating unit is specifically configured to: Performing correlation operation based on the local DMRS sequence and the DMRS signal in the first processing data, and obtaining the maximum value of the correlation operation result and the corresponding position of the maximum value; A first delay estimate is obtained based on the corresponding location.
5. 5. The uplink channel time synchronization device according to claim 4, wherein the corresponding position is determined based on the maximum value and a first threshold value.
6. 6. The uplink channel time synchronization device according to claim 2, wherein the first processing module further comprises: A first storage control unit; The first processing module reads and writes the data in the first storage module based on the first storage control unit.
7. 7. The uplink channel time synchronization device according to claim 6, wherein the first processing module further comprises: And the first interface is used for transmitting the received first data to the first storage control unit.
8. 8. The uplink channel time synchronization apparatus according to claim 1, wherein the apparatus further comprises: And the data acquisition module is used for receiving the original data and performing analog-to-digital conversion to obtain first data.
9. 9. The uplink channel time synchronization device according to claim 2, wherein the first processing module further comprises: a third calculation unit; the first computing unit is further used for processing the third data to obtain second processed data; and the third calculation unit is used for carrying out CP (control processing) cyclic prefix removal processing on the second processing data to obtain third processing data.
10. 10. The apparatus according to claim 9, wherein the first calculation unit processes the third data in units of a length of the second data.
11. 11. The uplink channel time synchronization device according to any one of claims 2-10, wherein the first computing unit is an FFT processing module.
12. 12. The uplink channel time synchronization apparatus according to claim 9, wherein the apparatus further comprises: And the second storage module is used for caching the third processing data.
13. 13. The uplink channel time synchronization device according to claim 12, wherein the first processing module further comprises: A second storage control unit; and the first processing module reads and writes the data in the second storage module based on the second storage control unit.
14. 14. The uplink channel time synchronization device according to claim 13, wherein the first processing module further comprises: And the second interface is used for outputting the data in the second storage module.
15. 15. The uplink channel time synchronization apparatus according to claim 14, wherein the apparatus further comprises: And the second processing module is used for carrying out subsequent processing on the data in the output second storage module.
16. 16. The uplink channel time synchronization apparatus according to claim 6 or 7, wherein the first memory module employs a DDR memory, and the first memory control unit employs a DDR memory controller.
17. 17. The uplink channel time synchronization apparatus according to any one of claims 13 to 15, wherein the second memory module employs a DDR memory, and the second memory control unit employs a DDR memory controller.
18. 18. The uplink channel time synchronization device according to claim 15, wherein the first processing module and the second processing module are each implemented by an FPGA.
19. 19. A network device, wherein an uplink channel time synchronization device according to any one of claims 1-18 is provided in the network device.
20. 20. An uplink channel time synchronization method, which is applied to a network device, comprising: caching the received first data; processing second data to obtain a first delay estimated value, wherein the second data is part of the first data; and processing third data, wherein the third data are residual data taking the first delay estimated value as a starting position in the first data.

Description

Uplink channel time synchronization device, method, equipment, medium and program product Technical Field The present application relates to the field of wireless communications, and in particular, to an uplink channel time synchronization apparatus, method, device, medium, and program product. Background For delay processing of a terminal device direct network device, mainly focusing on a 3GPP (3 rd Generation Partnership Project, third generation partnership project) 5G NTN (Non Terrestrial Network, non-terrestrial network) protocol aspect, an uplink synchronization method based on location information is generally adopted. However, due to the influence of errors of time synchronization of the whole network and various perturbation forces, the uplink synchronization method based on the position information still has larger time deviation after precompensation, in addition, the instability of a satellite-ground clock and the problem of wireless link timing drift caused by relative motion between terminal equipment and network equipment can also seriously influence the time for reaching a load of an uplink channel, thereby damaging demodulation performance, and even the delay exceeds an OFDM (Orthogonal Frequency Division Multiplexing ) symbol, so that normal demodulation cannot be realized and the application scene of the direct network equipment of the terminal equipment is influenced. Disclosure of Invention Aiming at the problems, the application provides an uplink channel time synchronization device, an uplink channel time synchronization method, uplink channel time synchronization equipment, an uplink channel time synchronization medium and a program product, so as to meet the application scene that terminal equipment is directly connected with network equipment in any scene. In a first aspect, the present application provides an uplink channel time synchronization apparatus, where the apparatus is applied to a network device, and the apparatus includes: The first storage module is used for caching the received first data; The first processing module is used for processing second data in the first storage module to obtain a first time delay estimated value, and processing third data in the first storage module based on the first time delay estimated value, wherein the second data is part of the first data, and the third data is residual data taking the first time delay estimated value as a starting position in the first data. In one or more embodiments of the present application, the first processing module includes: the first computing unit is used for processing the second data to obtain first processed data; And the second calculation unit is used for processing the first processing data to obtain a first time delay estimated value. In one or more embodiments of the present application, the second calculating unit performs a correlation operation on the first processing data based on the DMRS to obtain a first delay estimated value. In one or more embodiments of the present application, the second computing unit is specifically configured to: Performing correlation operation based on the local DMRS sequence and the DMRS signal in the first processing data, and obtaining the maximum value of the correlation operation result and the corresponding position of the maximum value; A first delay estimate is obtained based on the corresponding location. In one or more embodiments of the application, the corresponding location is determined based on the maximum value and a first threshold value. In one or more embodiments of the present application, the first processing module further includes: A first storage control unit; The first processing module reads and writes the data in the first storage module based on the first storage control unit. In one or more embodiments of the present application, the first processing module further includes: And the first interface is used for transmitting the received first data to the first storage control unit. In one or more embodiments of the present application, the uplink channel time synchronization apparatus further includes: And the data acquisition module is used for receiving the original data and performing analog-to-digital conversion to obtain first data. In one or more embodiments of the present application, the first processing module further includes: a third calculation unit; the first computing unit is further used for processing the third data to obtain second processed data; and the third calculation unit is used for carrying out CP (control processing) cyclic prefix removal processing on the second processing data to obtain third processing data. In one or more embodiments of the present application, the first calculation unit processes the third data in units of a length of the second data. In one or more embodiments of the present application, the first calculation unit is an FFT processing module. In one or more embodiments of the present applica