Terminal Reader Session Routing for Passive IoT Communication
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Solution Overview
Problem
Current passive internet of things technology primarily focuses on access network devices serving as readers, neglecting the potential of terminal devices to function as readers, limiting flexibility and mobility.
Innovation Solution
A communication method and apparatus that enables terminal devices to serve as readers by establishing sessions and transmission paths with internet of things devices through session management devices, allowing them to communicate with internet of things management devices via user plane devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If access network devices serve as readers in passive internet of things technology, then system stability and management control are improved, but device mobility and deployment flexibility are limited
Solution Approach 1:
The patent enables terminal devices to perform dual functions: acting as both users in traditional scenarios and as readers in passive internet of things scenarios. This multi-functionality allows terminal devices to read internet of things devices when serving as users, eliminating the need for separate reader infrastructure and improving deployment flexibility while maintaining system stability through existing network management protocols.
2Adaptability or versatility
If terminal devices serve as readers, then deployment flexibility and mobility are improved, but network complexity and session management overhead increase
Solution Approach 1:
The session management device acts as an intermediary that coordinates between terminal devices serving as readers and the core network. It establishes separate internet of things service transmission paths for reader operations, manages address allocation (uplink destination addresses pointing to user plane devices), and handles session setup/teardown. This intermediary approach abstracts the complexity from terminal devices while enabling flexible deployment.
Solution Approach 2:
The patent segments the network functionality by introducing dedicated internet of things service transmission paths separate from traditional user data paths. The session management device establishes independent transmission paths for internet of things service data, with specific user plane devices handling reader-related traffic. This segmentation isolates complexity to manageable components while enabling terminal devices to function as readers.
3Adaptability or versatility
If terminal devices transmit internet of things service data through user plane devices to internet of things management devices, then communication flexibility is improved, but transmission path complexity increases
Solution Approach 1:
User plane devices serve as intermediaries between terminal devices (acting as readers) and internet of things management devices. The session management device allocates uplink destination addresses that point to user plane devices, which then forward internet of things service data to the appropriate internet of things management devices. This intermediary layer simplifies routing for terminal devices while maintaining flexible communication paths.
Solution Approach 2:
The session management device performs preliminary actions by pre-establishing internet of things service transmission paths and allocating uplink destination addresses before terminal devices need to transmit data. This advance setup of routing information and transmission paths eliminates complex real-time routing decisions at terminal devices, simplifying their operation while maintaining flexible communication capabilities.
Data Source
AI summary
This application provides a communication method and apparatus, so that a terminal device serving as a reader can communicate with an internet of things device. The method includes: A terminal device sends a session establishment request message to a session management device, to request to establish a first session for transmission of internet of things service data. The session management device establishes, to each of a user plane device and an internet of things management device, an internet of things service transmission path for transmission of the internet of things service data; or obtains address information of an internet of things management device. When the uplink destination address of the received data is the address of the internet of things management device, the user plane device sends the data to the internet of things management device.