Wakeup Configuration Indication for Discontinuous Reception
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Solution Overview
Problem
Current wireless communication technologies, such as LTE and NR, face challenges in efficiently managing power consumption and flexibility in discontinuous reception (DRX) configurations, particularly in reducing the size of wakeup information payloads while maintaining configuration flexibility.
Innovation Solution
The solution involves dividing the wakeup information into a first part transmitted using a reference signal-type (RS-type) and a second part using a Physical Downlink Control Channel (PDCCH-type) signal, allowing the UE to detect the second part only after receiving the first part, thereby reducing power consumption and the number of blind decoding hypotheses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the wakeup information is transmitted using a single comprehensive signal, then the configuration flexibility is maintained, but the payload size increases and power consumption rises
Solution Approach 1:
The wakeup information is divided into two separate parts: a first part transmitted via RS-type signal and a second part via PDCCH-type signal. This segmentation allows the UE to selectively receive only the necessary portion based on its DRX configuration state, reducing overall power consumption while maintaining configuration flexibility through the combined information from both parts.
Solution Approach 2:
The UE performs partial decoding operations by first detecting the RS-type signal to determine if full PDCCH decoding is necessary. This partial action approach reduces the number of blind decoding hypotheses required, as the UE can avoid excessive full decoding attempts when the RS-type indication is sufficient.
2Use of energy by moving object
If the wakeup information payload size is reduced, then power consumption decreases, but the configuration flexibility is limited
Solution Approach 1:
The wakeup information is segmented into two parts with different payload sizes and transmission methods. The first part (RS-type) has a smaller payload that provides basic wakeup indication, while the second part (PDCCH-type) contains additional configuration details. This segmentation reduces overall power consumption from processing large payloads while preserving configuration flexibility through the combined information.
Solution Approach 2:
The system dynamically adapts the wakeup information transmission based on UE state and network conditions. The UE can transition between receiving only the first part (lower power mode) and receiving both parts (full configuration mode), making the power consumption and configuration flexibility dynamic rather than static.
3Measurement precision
If the UE performs full blind decoding of wakeup information, then configuration accuracy is ensured, but the number of decoding attempts increases power consumption
Solution Approach 1:
The RS-type signal serves as a preliminary action before full PDCCH decoding. By first detecting the RS-type wakeup indication, the UE can determine whether full decoding is necessary, thereby avoiding unnecessary full blind decoding attempts and reducing power consumption while maintaining detection accuracy when needed.
Solution Approach 2:
The UE performs partial decoding by first processing the RS-type signal to obtain basic wakeup information. This partial action reduces the number of full blind decoding hypotheses required, as the RS-type indication provides preliminary filtering that eliminates unnecessary full decoding operations.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive information identifying a set of wakeup configurations for discontinuous reception; detect one of: wakeup information, or a first part of the wakeup information and a second part of the wakeup information, wherein the wakeup information identifies a wakeup configuration of the set of wakeup configurations; and perform a transmission or reception based at least in part on the wakeup configuration. Numerous other aspects are provided.