Network-Coordinated Time-Frequency Resources for Batch Terminal Access
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Solution Overview
Problem
In intelligent cockpits, multiple vehicle-mounted terminals simultaneously initiating contention-based random access on limited and fixed time-frequency resources leads to severe resource collisions, preventing batch access.
Innovation Solution
A network control apparatus configures available time-frequency resources for multiple terminals to access the network, sending resource configuration information and receiving access information, including identity and status information, to facilitate group access and reduce resource conflicts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple terminals simultaneously initiate contention-based random access on limited and fixed time-frequency resources, then the access process is simple and fast, but severe resource collisions occur and batch access cannot be implemented
Solution Approach 1:
The patent segments the time-frequency resources into multiple sub-resources, where each terminal is configured with a specific sub-resource for access. This segmentation prevents multiple terminals from colliding on the same resource while enabling batch access of multiple terminals simultaneously.
Solution Approach 2:
The network control apparatus performs preliminary actions by sending resource configuration information to terminals before the access process. This includes configuring time-frequency resources and sending access permission indications, which prepares terminals in advance and prevents collisions during the actual access phase.
2Ease of operation
If contention-based random access is used, then the access mechanism is simple and widely applicable, but the probability of resource collision increases when multiple terminals access simultaneously
Solution Approach 1:
The patent introduces an intermediary mechanism where the network control apparatus acts as a mediator between terminals and time-frequency resources. It sends resource configuration information and access permission indications to terminals, coordinating their access and eliminating direct terminal-to-terminal collisions while maintaining simplicity.
3Productivity
If limited and fixed time-frequency resources are used for random access, then the resource allocation is simple and efficient, but batch access of multiple terminals cannot be supported
Solution Approach 1:
The patent makes the time-frequency resource allocation dynamic by allowing the network control apparatus to configure different time-frequency resources for different terminals based on their access requirements. This dynamic allocation supports batch access of multiple terminals while maintaining high access efficiency through coordinated resource usage.
Data Source
AI summary
An access method and apparatus, and a communication system is provided One example method includes: sending resource configuration information, where the resource configuration information configures a first time-frequency resource used for access of a plurality of terminals; and receiving access information from at least one of the plurality of terminals on the first time-frequency resource, where the access information of the terminal includes at least one of first identity information or status information of the terminal, the first identity information identifies the terminal, and the status information indicates a status of the terminal.