Paging Early Indication Location with Frame and Symbol Offsets
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Solution Overview
Problem
User Equipment (UE) in wireless communication systems experience unnecessary power consumption due to actively monitoring paging occasions without receiving paging messages, particularly for UEs with low paging probability, leading to excessive power consumption from blind detection of paging physical downlink control channels.
Innovation Solution
Determine the location of paging early indication (PEI) using frame-level and symbol-level offsets, enabling UEs to accurately identify PEI occasions through configuration information, thereby reducing unnecessary power consumption and improving power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE actively monitors paging occasions in each paging cycle, then UE can obtain paging messages, but power consumption increases due to unnecessary monitoring when no paging messages are present
Solution Approach 1:
The patent applies preliminary action by introducing a paging early indication (PEI) that is transmitted before the paging occasion (PO) to indicate whether a paging message will be sent. The PEI provides advance information to the UE, allowing the UE to determine in advance whether it needs to monitor the upcoming PO. This preliminary indication mechanism enables UEs with low paging probability to skip unnecessary PO monitoring, thereby reducing power consumption while ensuring that UEs with high paging probability do not miss any paging messages.
2Reliability
If UE monitors all paging occasions, then no paging messages are missed, but unnecessary blind detection of paging PDCCH increases power consumption
Solution Approach 1:
The patent applies the taking out principle by extracting the indication function from the main paging message and separating it into a distinct PEI signal transmitted before the PO. This extracted indication mechanism allows the UE to filter out unnecessary PO monitoring cases. By taking out the early indication function, the system enables UEs to selectively monitor only those POs where paging messages are actually present, thereby eliminating unnecessary blind detection of paging PDCCH and reducing power consumption.
3Use of energy by moving object
If PEI is introduced to indicate paging status, then power consumption is reduced, but complexity of locating PEI accurately increases
Solution Approach 1:
The patent applies parameter changes by defining specific time-domain parameters for PEI location, including frame-level offsets and symbol-level offsets within a frame. The PEI is located at specific positions determined by these offset parameters relative to reference points such as the start of a paging frame or synchronization signal block. By standardizing these parameter definitions, the patent provides a systematic method for PEI location determination that reduces complexity compared to blind search approaches, while still enabling accurate PEI localization.
Data Source
AI summary
The present disclosure describes methods, system, and devices for determining a location of paging early indication (PEI). One method includes receiving, by a user equipment (UE), configuration information of a paging early indication occasion (PEI-O), wherein the configuration information comprises a frame-level offset list and a symbol-level offset list, the frame-level offset list comprises one or more frame-level offset, and the symbol-level offset list comprises one or more symbol-level offset; and detecting, by the UE, a paging early indication (PEI) in the PEI-O, wherein the PEI-O is determined by a frame-level offset from a start of a first paging frame (PF) of at least one PF associated with the PEI-O to a reference point and a symbol-level offset from the reference point to a start of a first physical downlink control channel (PDCCH) monitor occasion of the PEI-O.