Paging Mechanism for NB-IoT User Equipment Power Optimization
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Solution Overview
Problem
Current paging mechanisms in NB-IoT systems lead to excessive false paging, resulting in high power consumption for UE sensitive to power usage, as they often receive false identification information, wasting energy.
Innovation Solution
The proposed solution involves a user equipment (UE) and base station configuration where the UE receives first indication information to save context information and decode the physical downlink control channel (PDCCH) based on identification information, determining if it is paged or has a service, using specific obtaining manners such as correctly decoding DCI formats or detecting P-RNTI, to accurately identify valid paging messages and avoid false activations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE receives paging messages using the conventional PF/PO calculation method, then the UE can be paged by the network, but the UE experiences excessive false paging and high power consumption
Solution Approach 1:
The base station performs preliminary action by determining whether the UE is in a false paging state before sending the paging message. The network side calculates whether the UE should be in a paging state based on stored context information and current time, and only sends paging messages when actually needed, preventing false paging at the source
Solution Approach 2:
The UE provides feedback by sending a feedback message to the base station indicating whether it received a paging message and whether it is in a false paging state. This feedback loop allows the base station to adjust its paging behavior and avoid sending false paging messages in the future, reducing unnecessary power consumption
2Measurement precision
If the UE decodes PDCCH at every PO time point to check for paging messages, then the UE can detect valid paging messages, but the UE wastes energy decoding messages not intended for it
Solution Approach 1:
The base station performs preliminary filtering by determining whether the UE is in a false paging state before transmitting the paging message. The network side uses stored context information to pre-calculate whether the UE should be paged at the current PO, preventing the UE from wasting energy on decoding messages not intended for it
Solution Approach 2:
The patent extracts and removes false paging messages from the system by implementing a verification mechanism. The base station extracts the UE's context information and uses it to verify whether a paging message should be sent, effectively taking out harmful false paging detections before they can consume UE energy
3Productivity
If the UE triggers data transmission resumption processing upon receiving a paging message, then the UE can resume data transmission quickly, but the UE consumes unnecessary power when paging is false
Solution Approach 1:
The UE sends feedback to the base station indicating whether it is in a false paging state. This feedback mechanism allows the network to learn from false paging events and adjust its paging strategy, preventing future false paging that would trigger unnecessary data transmission resumption and power consumption
Solution Approach 2:
The base station performs preliminary verification using stored context information before triggering data transmission resumption. By pre-calculating whether the UE should be in a paging state and only sending paging messages when verified as valid, the system prevents false paging from triggering unnecessary data transmission resumption processing
Data Source
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AI summary
The present invention provides a data transmission processing method, user equipment, and a base station. The method includes: receiving first indication information sent by a base station, and saving context information of user equipment according to the first indication information, where the context information includes identification information of the user equipment; and decoding a physical downlink control channel PDCCH based on the identification information of the user equipment, to obtain second indication information, where the second indication information is used to determine that the user equipment is a paged object or that there is a service of the user equipment. The indication information meant for the paged object is carried in the PDCCH, so that the user equipment can determine, depending on whether the indication information can be successfully obtained, whether the user equipment is the paged object or has a service, and perform subsequent processing, for example, connecting to a network, when determining that the user equipment is the paged object or has a service. This avoids wasting of UE power consumption.