PEI-Based Paging for Mixed-Capability Wireless UEs
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Solution Overview
Problem
Existing wireless communication systems face increased power consumption and latency due to the lack of efficient paging techniques for devices with mixed capabilities, particularly when different types of UEs with varying bandwidth configurations are present, leading to inefficient monitoring and decoding of paging messages.
Innovation Solution
Implementing paging early indication (PEI) signaling that includes UE subgroup identification fields and status indications to differentiate between UE types, allowing UEs to determine whether to monitor for subsequent paging communications based on their bandwidth configuration, thereby optimizing power consumption and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If UEs monitor for all paging communications regardless of type, then no paging messages are missed, but power consumption increases and latency increases due to unnecessary decoding operations
Solution Approach 1:
The patent applies preliminary action by introducing a Paging Early Indication (PEI) signal that is transmitted before the actual paging message. This PEI signal provides advance information about the upcoming paging message characteristics (such as bandwidth configuration and UE type), allowing the UE to prepare appropriately and avoid unnecessary monitoring and decoding operations, thus reducing power consumption while ensuring reliable reception of relevant paging messages
Solution Approach 2:
The patent segments the paging indication process into two distinct parts: (1) a PEI signal that provides preliminary information about the paging message, and (2) the actual paging message itself. This segmentation allows UEs to selectively monitor only the relevant parts based on their capabilities and the PEI content, reducing unnecessary power consumption while maintaining reliable paging message reception
2Use of energy by moving object
If separate PEIs are transmitted for different UE types, then power consumption is reduced by avoiding unnecessary monitoring, but device complexity and system complexity increase
Solution Approach 1:
The patent implements universality by designing a unified PEI structure that can serve multiple UE types (both normal and reduced capability UEs) through a single signaling mechanism. The PEI contains fields that can indicate different bandwidth configurations and UE types, allowing the same signaling structure to provide tailored information to different UE categories without requiring completely separate signaling systems, thus reducing overall system complexity while still enabling selective monitoring and power savings
Data Source
AI summary
Methods, systems, and devices for wireless communications are described in which a user equipment (UE) may monitor for one or more paging messages based on a paging early indication (PEI) and whether the UE operates according to a first bandwidth configuration or a second bandwidth configuration. A UE may decode a PEI and determine whether to monitor for one or more subsequent paging messages based on one or more fields of the PEI. The PEI may include one or more fields associated with different UE types, with the fields indicating one or more UE subgroup identifications that are to monitor for an associated paging message, where the different subgroup identifications are associated with different UE types.