Wireless Terminal Access Configuration for Time-Frequency Resource Conflicts
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Solution Overview
Problem
Existing wireless communications systems in intelligent cockpits face challenges in ensuring reliable terminal access due to limited time-frequency resources, particularly in scenarios where multiple terminals initiate access simultaneously, such as when a vehicle is powered on or when non-vehicular terminals need to reconnect, leading to inefficient resource utilization.
Innovation Solution
A flexible access method and apparatus that configures terminals with either contention-based or contention-free access manners based on access configuration information, utilizing pre-defined time-frequency resources and identity information exchange to optimize terminal access in different scenarios, reducing parsing complexity and resource conflicts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional random access method is used, then terminals can access the network, but the limited time-frequency resource can carry only very limited terminal access at a time
Solution Approach 1:
The patent implements dynamic access manner configuration where the network control apparatus can flexibly switch between first access manner (contention-based random access) and second access manner (contention-free random access) based on system state and terminal requirements. This dynamic adaptation allows the system to optimize resource utilization while maintaining reliable access for multiple terminals simultaneously
Solution Approach 2:
The patent changes the access parameter by introducing configurable access manners with different resource allocation strategies. The first access manner uses conventional random access parameters, while the second access manner uses dedicated time-frequency resources, allowing the system to adjust access parameters according to traffic conditions and terminal priorities
2Reliability
If limited fixed time-frequency resource is allocated for random access, then service of another terminal can be maintained, but resource utilization is inefficient
Solution Approach 1:
The system dynamically adjusts resource allocation between maintaining existing terminal services and accommodating new terminal access requests. By switching between different access manners, the system can efficiently utilize available time-frequency resources while ensuring continuous service for active terminals
Solution Approach 2:
The network control apparatus implements a universal resource management mechanism that can handle both dedicated resource allocation (for service continuity) and shared resource allocation (for efficient utilization) through different access manners, making the resource management system adaptable to various operational scenarios
3Adaptability or versatility
If contention-based random access is used, then multiple terminals can attempt access, but resource conflicts occur when multiple terminals initiate access simultaneously
Solution Approach 1:
The patent implements dynamic selection between contention-based and contention-free access manners based on the number of terminals attempting access and system load conditions. This dynamic approach reduces resource conflicts by switching to contention-free mode when multiple terminals need simultaneous access, thereby improving access success rate while maintaining flexibility
Solution Approach 2:
The network control apparatus acts as an intermediary that coordinates terminal access by assigning dedicated resources for the second access manner. This intermediary function resolves resource conflicts by mediating between multiple terminals that need simultaneous access, ensuring reliable communication while maintaining system flexibility
Data Source
AI summary
An access method and apparatus, and a communications system is provided One example method includes: The network control apparatus sends access configuration information, where the access configuration information configures an access manner of the at least one second apparatus, and the access manner includes a first access manner or a second access manner. A second apparatus in the at least one second apparatus sends access information of the second apparatus to the network control apparatus based on the access configuration information, where the access information requests access. The network control apparatus receives the access information from the second apparatus.