Downlink data processing method and device, equipment and storage medium
By introducing a time slice field and a mapping bitmap mechanism, the problems of inaccurate addressing and resource waste in DVB-S2 downlink data processing are solved, enabling rapid identification and efficient processing of terminal devices, and making it suitable for multi-terminal concurrent scenarios.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 广东世炬网络科技股份有限公司
- Filing Date
- 2026-03-06
- Publication Date
- 2026-06-09
AI Technical Summary
Traditional DVB-S2 downlink data processing mechanisms struggle to achieve precise addressing and effective processing due to factors such as broadcast transmission attributes, encapsulation granularity limitations, and terminal power consumption sensitivity. This results in resource waste and low processing efficiency for terminal devices in multi-terminal concurrent scenarios.
A frame-level service attribute indication mechanism based on the time slice field and a terminal device set bitmap parsing mechanism are introduced. The mapping bitmap enables fast discrimination and efficient processing, including frame-level service attribute identification, forward error correction decoding and protocol decapsulation.
It improves the accuracy and efficiency of downlink data processing, reduces the power consumption of terminal devices, and is suitable for efficient data processing in cellular communication systems, vehicle-to-everything (V2X) communication systems, and multi-terminal concurrent scenarios.
Smart Images
Figure CN121814874B_ABST
Abstract
Claims
1. A downlink data processing method, applied to a terminal device, characterized in that, include: Receive downlink data sent by the base station, and obtain the time slice field used to indicate frame-level service attributes from the frame header information of the downlink data; The time slice field is parsed into a mapping bitmap that represents the set of terminal devices; If it is determined that the bit corresponding to the terminal device in the mapping bitmap is set, forward error correction decoding is performed on the downlink data to recover the baseband frame payload of the downlink data; The baseband frame payload is decapsulated to obtain protocol data units; If it is determined that the protocol data unit corresponds to the terminal device, upper-layer processing is performed on the protocol data unit.
2. The downlink data processing method according to claim 1, characterized in that, The step of obtaining the time slice field indicating frame-level service attributes from the frame header information of the downlink data includes: Demodulate the physical layer frame header of the downlink data to obtain demodulation parameters for physical layer demodulation configuration; The baseband frame header is obtained by demodulating the frame header portion of the downlink data based on the demodulation parameters. Extract the time slice field from the baseband frame header.
3. The downlink data processing method according to claim 1, characterized in that, The step of determining that the bit corresponding to the terminal device in the mapping bitmap is set includes: Obtain the local identifier field of the terminal device; Based on the established mapping relationship between the identifier field and the bit, determine the target bit of the local identifier field in the mapping bitmap; If the state of the target bit is consistent with the set state, it is determined that the target bit is set.
4. The downlink data processing method according to claim 1, characterized in that, The step of determining that the protocol data unit corresponds to the terminal device includes: Parse the header of the protocol data unit to obtain the terminal identification field carried therein, which is used to indicate the receiving terminal; If the terminal identifier field matches the local identifier field of the terminal device, the protocol data unit is determined to correspond to the terminal device.
5. The downlink data processing method according to claim 1, characterized in that, After parsing the time slice field into a mapping bitmap representing a set of terminal devices, the method further includes: If the bit corresponding to the terminal device in the mapping bitmap is not set, the terminal device is controlled to enter a low-power operation state.
6. A downlink data processing method, applied to a base station, characterized in that, include: Obtain the target data to be sent, and iterate through the target data to obtain the corresponding terminal device; A mapping bitmap is generated based on the terminal device, and the bits corresponding to the terminal device in the mapping bitmap are set. The terminal device performs protocol encapsulation on the target data to generate protocol data units; The baseband frame payload carrying the protocol data unit is forward-corrected and encoded to generate an encoded bit sequence; Frame header information is generated based on the mapping bitmap, wherein the mapping bitmap is located in the time slice field of the frame header information; The frame header information and the encoded bit sequence are framed to form downlink data, which is then sent to the terminal device.
7. A downlink data processing device, applied to a terminal device, characterized in that, include: The demodulation module is configured to receive downlink data sent by the base station and obtain the time slice field used to indicate frame-level service attributes from the frame header information of the downlink data. The mapping module is configured to parse the time slice field into a mapping bitmap for representing a set of terminal devices; The decoding module is configured to perform forward error correction decoding on the downlink data to recover the baseband frame payload of the downlink data when it is determined that the bit corresponding to the terminal device in the mapping bitmap is set. The decapsulation module is configured to perform protocol decapsulation on the baseband frame payload to obtain protocol data units; The processing module is configured to perform upper-layer processing on the protocol data unit when it is determined that the protocol data unit corresponds to the terminal device.
8. A downlink data processing apparatus, applied to a base station, characterized in that, include: The traversal module is configured to acquire target data to be sent and traverse the target data to obtain the corresponding terminal device. The bit setting module is configured to generate a mapping bitmap based on the terminal device and set the bit bits in the mapping bitmap corresponding to the terminal device. The encapsulation module is configured to perform protocol encapsulation on the target data according to the terminal device to generate protocol data units; The encoding module is configured to perform forward error correction encoding on the baseband frame payload carrying the protocol data unit to generate an encoded bit sequence; The frame header module is configured to generate frame header information based on the mapping bitmap, wherein the mapping bitmap is located in the time slice field of the frame header information; The framing module is configured to frame the frame header information and the encoded bit sequence to form downlink data, and send the downlink data to the terminal device.
9. A downlink data processing device, characterized in that, include: One or more processors; A memory that stores one or more programs, which, when executed by one or more processors, cause the one or more processors to implement the downlink data processing method as described in any one of claims 1-5.
10. A storage medium containing computer-executable instructions, characterized in that, The computer-executable instructions, when executed by a computer processor, are used to perform the downlink data processing method as described in any one of claims 1-5.