Assistance Data Broadcast Parameters for Precise Positioning Networks
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Solution Overview
Problem
Existing RTK technologies lack clear determination of transmission parameters for assistance data, leading to ineffective support for broadcasting, which hampers precise positioning in applications like drones and smart driving.
Innovation Solution
A method where a server sends a first message to a network device with configuration and priority information for broadcasting assistance data, including transmission cycles and data volumes, enabling negotiation and resource allocation to optimize data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If assistance data is broadcast without determined transmission parameters, then the broadcasting function cannot be effectively supported, but the system complexity increases due to unclear behavior definitions
Solution Approach 1:
The patent applies parameter changes by introducing specific transmission parameters (transmission cycle, data volume, priority) to define and control the assistance data broadcasting process. These parameters transform the unclear broadcasting mechanism into a controllable and reliable system with well-defined behavior at each stage.
Solution Approach 2:
The patent segments the assistance data broadcasting process into distinct stages: server generates assistance data and determines transmission parameters, network device receives and forwards according to parameters, terminal device receives and uses for positioning. This segmentation clarifies the behavior of each component and improves overall system reliability.
2Productivity
If transmission parameters are not determined for assistance data, then the data transmission process is inefficient, but defining parameters increases the complexity of negotiation and resource allocation
Solution Approach 1:
The patent applies preliminary action by having the server determine transmission parameters (transmission cycle, data volume, priority) before actually broadcasting the assistance data. The network device also performs preliminary configuration based on these parameters, ensuring efficient execution without complex real-time negotiations during data transmission.
3Loss of energy
If assistance data is broadcast without configuration information, then resource utilization is inefficient, but obtaining configuration information requires additional signaling overhead
Solution Approach 1:
The patent merges the transmission parameter determination with the assistance data generation process at the server side. The server simultaneously determines both the assistance data content and its transmission parameters (cycle, volume, priority), then sends them together to the network device, reducing separate signaling overhead while optimizing resource utilization.
Data Source
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AI summary
This application provides a transmission method, a network device, and a server. The method includes: receiving, by a network device, a first transmission parameter that is sent by a server and that is used to transmit assistance data, where the first transmission parameter includes configuration information and/or priority information, and the configuration information is used to indicate a transmission cycle of each of one or more system messages and/or a size of a data volume that can be carried in each of the one or more system messages; and sending, by the network device, first configuration information to the server according to the first transmission parameter, where the first configuration information is used to indicate a transmission cycle of a first system message and a size of a data volume that can be carried in the first system message, and the one or more system messages include the first system message. According to the transmission method in embodiments of this application, the server sends, to the network device, a transmission parameter used to transmit the assistance data, so that a procedure of broadcasting the assistance data is optimized.