5G NR Paging Search Space Adaptation for Reliability
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Solution Overview
Problem
In 5G NR wireless communication systems, the flexible uplink and downlink frame structure makes it challenging to ensure fixed downlink slots for paging scheduling, which can lead to paging failures due to the absence of a common search space.
Innovation Solution
A method is introduced where the UE and base station adapt the time-domain configuration of the common search space by determining X1 slots within Y slots, with a feature ID used to identify candidate slots and time windows, ensuring the presence of a common search space for paging information transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible uplink and downlink frame structure is adopted in 5G NR, then adaptability to different application scenarios is improved, but the ability to ensure fixed downlink slots for paging scheduling deteriorates
Solution Approach 1:
The frame structure is segmented into different types (Type 1 and Type 2) with distinct characteristics. Type 1 frames have fixed downlink slots suitable for paging, while Type 2 frames are more flexible. This segmentation allows the system to maintain reliability for paging in specific frame types while achieving overall adaptability across different application scenarios.
Solution Approach 2:
The system dynamically selects between different frame structures (Type 1 and Type 2) based on service requirements. The frame type configuration can be changed adaptively, allowing the network to switch between fixed and flexible structures as needed, thus resolving the contradiction between reliability for paging and adaptability for different scenarios.
2Reliability
If fixed downlink slots are reserved for paging scheduling in LTE, then paging reliability is improved, but flexibility in uplink-downlink configuration deteriorates
Solution Approach 1:
Different parts of the frame structure are assigned different qualities/functions. Specific slots within Type 1 frames are designated as having fixed downlink quality suitable for paging, while other parts of the system maintain flexibility. This local differentiation allows paging reliability in specific regions without sacrificing overall system flexibility.
Solution Approach 2:
The system dynamically configures frame types based on service needs. When paging reliability is needed, Type 1 frames are used; when flexibility is needed, Type 2 frames are used. This dynamic adaptation resolves the contradiction by allowing the system to exhibit different characteristics in different time periods based on requirements.
Data Source
AI summary
The present disclosure provides a method and a device in a User Equipment (UE) and a base station used for wireless communication. The UE first receives first-type information and then detects a first signaling in X1 slots; wherein the first-type information is used for determining Y slots, a common search space is reserved within each of the Y slots, each slot of the X1 slots is one of the Y slots, a feature ID of a detector of the first signaling is used for determining the X1 slots among the Y slots, the Y is greater than the X1, both the X1 and the Y are positive integers, and the first signaling is used for determining paging related information. The method in the present disclosure can reduce the possibility of paging failure and improve paging capacity.