Paging Indication Bit Determination for UE Power Saving
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, excessive power consumption occurs due to frequent wake-ups of user equipment (UEs) that are not paged, as all UEs are woken up at a paging occasion (PO) despite varying paging probabilities.
Innovation Solution
A method for determining a paging indication bit, where a user equipment (UE) determines a paging indication bit index based on its paging group identifier (ID) within a paging early indication (PEI), and decodes the corresponding paging indication bit to determine whether to wake up or remain dormant during a PO.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all user equipments (UEs) are woken up at a paging occasion (PO) to monitor paging messages, then the paging reliability is ensured, but the power consumption increases due to frequent wake-ups of UEs that are not paged
Solution Approach 1:
The patent segments the paging indication into two parts: a paging early indication (PEI) sent before the paging occasion, and the actual paging message. The PEI is further divided into multiple paging indication bits, each corresponding to different paging groups. This segmentation allows UEs to first check the PEI and only wake up fully if their specific paging group is indicated, thereby reducing unnecessary wake-ups while maintaining reliable paging delivery.
Solution Approach 2:
The patent implements preliminary action by sending the paging early indication (PEI) before the actual paging occasion. The PEI provides advance notification to UEs about whether they need to wake up for the upcoming paging message. This preliminary indication allows UEs to make informed decisions about waking up, reducing power consumption while ensuring that paged UEs are reliably notified.
2Use of energy by moving object
If paging early indication (PEI) is sent to instruct UEs regarding wake-up, then the power consumption is reduced, but the system complexity increases due to additional signaling and bit determination
Solution Approach 1:
The patent applies self-service by enabling UEs to autonomously determine their own paging indication bit index using their unique paging group ID and the formula involving modulo operation. Each UE can independently calculate which bit in the PEI corresponds to it without requiring complex network coordination or additional signaling overhead. This self-determination mechanism reduces system complexity while maintaining the power-saving benefits of PEI.
3Productivity
If multiple paging indication bits are used in PEI to cover different paging groups, then the paging efficiency is improved, but the PEI message size increases
Solution Approach 1:
The patent merges multiple paging group indications into a single compact PEI message structure. Instead of sending separate indication messages for each paging group, the patent combines all paging group indications into one PEI frame with multiple bits, where each bit corresponds to a specific paging group. This merging approach improves paging efficiency by allowing UEs to check their status in a single message while keeping the overall message size manageable through efficient bit-packing.
Data Source
AI summary
A method for determining a paging indication bit, performed by a user equipment (UE) includes: determining, according to a paging group identifier (ID) of the UE, a paging indication bit index of a paging indication bit corresponding to the paging group ID of the UE in a paging earlier indication (PEI); and decoding the paging indication bit corresponding to the paging group ID of the UE in the PEI according to the paging indication bit index.