Tag Deactivation via Shared Random Access in Passive IoT
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Solution Overview
Problem
In passive IoT systems combined with wireless communication systems like 5G, the immediate deactivation of tags using existing RFID mechanisms leads to significant signaling overheads and impacts normal communication services due to the consumption of resources by core and access network devices.
Innovation Solution
A method where the core network device coordinates tag deactivation by sending random access indication information to the access network device, allowing simultaneous random access of multiple tags within a specified identifier range, reducing the need for separate access procedures and minimizing signaling overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If immediate deactivation mechanism is used for tags, then tag deactivation can be performed quickly, but signaling overheads increase and normal communication services are affected
Solution Approach 1:
The patent combines the deactivation operation with a non-deactivation operation (such as reading or writing) that is performed on a different tag. The core network device performs both operations simultaneously by triggering random access for multiple tags within the same time window, thereby merging what would otherwise be separate procedures into a single coordinated operation. This reduces signaling overheads while maintaining deactivation speed.
Solution Approach 2:
The patent implements preliminary action by having the core network device store information about tags that need deactivation in advance. When a non-deactivation operation is requested for a different tag, the system checks whether tags requiring deactivation are available and schedules them to be deactivated during the same random access procedure, preparing the deactivation actions ahead of time to execute them efficiently alongside other operations.
2Reliability
If separate random access procedure is used for tag deactivation, then deactivation can be targeted, but resource consumption increases
Solution Approach 1:
The patent merges the resource consumption of multiple operations by performing deactivation and non-deactivation operations simultaneously. The core network device triggers random access for both types of operations in the same time window, allowing the access network device to handle multiple tags together. This approach maintains deactivation accuracy while significantly reducing overall resource consumption compared to separate procedures.
Solution Approach 2:
The patent applies universality by designing a system where the random access procedure serves multiple functions: it can perform both deactivation operations and non-deactivation operations (reading, writing) on different tags within the same procedure. This multi-functionality allows the system to handle diverse tag operations without requiring separate dedicated procedures, thereby reducing resource consumption while maintaining operational reliability.
Data Source
AI summary
This application relates to the field of communication technologies, and discloses a tag deactivation method and an apparatus, so that signaling overheads of tag deactivation can be reduced. The method includes: A core network device receives a first request from a service requester, where the first request is used to request to perform a non-deactivation operation on a second tag. The core network device determines that there is a first tag on which a deactivation operation is to be performed, where the deactivation operation is used to deactivate the first tag. The core network device sends random access indication information to an access network device, and the first tag identifier range includes a tag identifier of the first tag and a tag identifier of the second tag. The core network device sends a deactivation instruction to the first tag after random access of the first tag.