Location-Based Broadcast Filtering for Passive IoT Terminals
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Solution Overview
Problem
Existing communication methods in the field of passive internet of things terminals lack flexibility in obtaining terminal device information based on actual network requirements, leading to inefficient management.
Innovation Solution
A communication method and apparatus that determines and sends identification and indication information to terminal devices, allowing them to perform specific operations based on location information, enabling flexible and efficient information retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the access network device executes the tag inventory/paging procedure on all terminal devices by using a broadcast message, then the network can obtain information about terminal devices, but the system overhead increases and flexibility is reduced
Solution Approach 1:
The patent extracts and processes identification information at the network side before broadcasting, so that only relevant terminal devices need to respond. This extracts the filtering function from the broadcast process itself, reducing the number of devices that need to process and respond to the full broadcast message, thereby reducing system overhead while maintaining information retrieval capability
Solution Approach 2:
The patent segments the terminal device population into different groups based on identification information matching. Instead of treating all terminal devices uniformly in the broadcast process, the system divides them into matching and non-matching groups, allowing differentiated handling and reducing the burden on the overall system
2Loss of information
If the access network device executes the tag inventory/paging procedure on all terminal devices, then complete information can be obtained, but the operation becomes inefficient and inflexible
Solution Approach 1:
The patent performs preliminary filtering of terminal devices based on identification information before the actual information retrieval process. By pre-identifying which terminal devices match the broadcast criteria, the system avoids unnecessary processing with non-matching devices, improving management efficiency while ensuring that all relevant information is still retrieved
Solution Approach 2:
The patent implements partial action by having only the subset of terminal devices that match the identification information perform the response operation. Instead of requiring all terminal devices to participate in the inventory/paging procedure, only the necessary subset responds, improving efficiency while maintaining information completeness for the target group
3Adaptability or versatility
If the network requests information from all terminal devices, then comprehensive management is achieved, but the complexity of the procedure increases
Solution Approach 1:
The patent introduces dynamic filtering based on broadcast identification information. The system adaptively determines which terminal devices should respond to each broadcast message based on real-time identification criteria, making the procedure flexible and adaptable to different management scenarios while reducing overall procedural complexity through intelligent selection
Data Source
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AI summary
This application proposes a communication method and apparatus. The method includes: A first communication apparatus determines first identification information and first indication information, where the first identification information includes first location information and identifies a terminal device that matches the first location information, and the first indication information indicates the terminal device that matches the first location information to perform a first operation, and/or indicates a terminal device that does not match the first location information to perform a second operation. The first communication apparatus sends a broadcast message including the first identification information and the first indication information. The first communication apparatus sends a first message, where the first message is used to query a terminal device that has performed the first operation or the second operation. The first communication apparatus receives a second message of a first terminal device, where the second message includes identifier information of the first terminal device. According to the method, the first communication apparatus may flexibly query and obtain information about a corresponding terminal device based on an actual requirement, so that a network can efficiently manage the terminal device.