RedCap SPS/CG Deactivation for Battery-Saving Data Scheduling
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Solution Overview
Problem
RedCap UEs in wireless communication networks waste processing time and battery life due to unnecessary decoding of empty SPS/CG occasions and generate unnecessary traffic, leading to interference.
Innovation Solution
User devices like RedCap UEs skip SPS/CG opportunities based on predefined criteria, such as lack of traffic or receipt of control messages, using wake-up signals or pre/post-indications to optimize power usage and reduce unnecessary traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RedCap UEs continuously monitor and decode all SPS/CG occasions, then reliable communication is maintained, but battery life is wasted and processing time is consumed
Solution Approach 1:
The network sends wake-up signals or pre-indications before SPS/CG occasions to alert RedCap UEs whether they need to wake up and decode the upcoming transmission. This preliminary notification allows UEs to avoid unnecessary decoding operations while maintaining reliable communication when data is actually present.
Solution Approach 2:
RedCap UEs skip or rush through SPS/CG occasions where no data is transmitted by using wake-up signals to indicate absence of data. This allows the UE to quickly determine that no decoding is needed and remain in low-power state, thereby extending battery life without compromising communication reliability.
2Reliability
If RedCap UEs decode all SPS/CG occasions, then complete data reception is ensured, but processing time is wasted on empty occasions
Solution Approach 1:
The network provides pre-indications or wake-up signals before SPS/CG occasions to inform RedCap UEs whether data will be transmitted. This preliminary information allows UEs to allocate processing time only when necessary, avoiding wasted processing on empty occasions while ensuring complete data reception when data is present.
Solution Approach 2:
The network provides feedback through wake-up signals or pre-indications about the presence or absence of data in upcoming SPS/CG occasions. This feedback mechanism enables RedCap UEs to adjust their processing behavior accordingly, spending time only on occasions where data reception is actually needed.
3Reliability
If RedCap UEs transmit feedback for all SPS/CG occasions, then communication protocol compliance is maintained, but unnecessary traffic is generated causing interference
Solution Approach 1:
The network sends pre-indications before SPS/CG occasions to inform RedCap UEs whether they should transmit feedback. This preliminary notification allows UEs to maintain protocol compliance by transmitting feedback only when data was actually received, avoiding unnecessary traffic and resulting interference.
Solution Approach 2:
The invention extracts or removes unnecessary feedback transmissions for empty SPS/CG occasions by using wake-up signals to indicate absence of data. This extraction of unnecessary feedback reduces traffic volume and eliminates harmful interference while maintaining protocol compliance for actual data transmissions.
Data Source
AI summary
A user device, UE, for a wireless communication network, is to transmit or receive at a plurality of configured or preconfigured opportunities, like a plurality or semi-persistent scheduling, SPS, or configured grant, CG, opportunities; and wherein, responsive to one or more criteria, the UE is to skip one or more of the SPS or CG opportunities.