Paging Identifier Separation for Selective UE Wake-Up
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently handling discontinuous coverage scenarios in non-terrestrial networks (NTN) for cellular IoT, particularly in store and forward (SF) modes, leading to unnecessary UE wake-ups and increased energy consumption due to indistinguishable paging for data and application-level feedback.
Innovation Solution
Implementing distinct paging identifiers, such as SF-P-RNTI, to differentiate between paging messages for data transmission and application-level feedback, allowing UEs to selectively monitor for relevant information and reduce unnecessary wake-ups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a single paging identifier is used for both data transmission and application-level feedback, then the paging system is simple and covers all cases, but the terminal device cannot distinguish between the two types of paging, leading to unnecessary wake-ups and increased energy consumption
Solution Approach 1:
The patent segments the paging identification into two distinct identifiers: a first paging identifier for application-level feedback and a second paging identifier for data transmission. This segmentation allows the terminal device to differentiate between the two types of paging messages, enabling selective wake-ups only when necessary, thereby reducing energy consumption while maintaining clear differentiation between paging types.
2Reliability
If the terminal device monitors both paging messages using the same identifier, then the coverage is complete, but the paging probability increases and energy consumption rises
Solution Approach 1:
The patent applies local quality by assigning different paging identifiers to different paging scenarios. The first paging identifier is specifically used for application-level feedback paging, while the second paging identifier is used for data transmission paging. This allows the terminal device to monitor with appropriate specificity, reducing unnecessary wake-ups for data transmission when only feedback is needed, thus lowering energy consumption while maintaining reliable coverage for both scenarios.
3Ease of operation
If the network uses the same paging message for both feedback transmission and data transmission, then the network structure is simple, but the terminal device cannot selectively monitor for relevant information
Solution Approach 1:
The patent segments the paging message structure by introducing different paging identifiers (first paging identifier for feedback, second paging identifier for data). This segmentation enables the terminal device to selectively monitor for relevant information based on its current needs, improving ease of operation. The network structure remains relatively simple as it only requires differentiating the identifiers rather than completely separate message structures.
Data Source
AI summary
Embodiments of the present disclosure relate to paging differentiation. A terminal device obtains a first paging identifier for monitoring first paging information scheduling a first paging message for a transmission of an application level feedback, the first paging identifier being different from a second paging identifier for monitoring second paging information scheduling a second paging message for a data transmission, and monitor, using the first paging identifier, the first paging information from an access network device. Paging for new packets and delivery of feedback can be differentiated to avoid false wake-up of UE not waiting for feedback.