Out of Order Page Decoding for Idle DRX
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Solution Overview
Problem
Current wireless communication systems, particularly in power-saving modes like idle or deep sleep, face inefficiencies in decoding pages during discontinuous reception (DRX) due to limited power conservation and increased latency in acquiring timing and frequency information for paging occasions (POs).
Innovation Solution
Implementing an offline mode for PO decoding that utilizes the closest-in-time reference signal (RS) to acquire timing and frequency information, allowing for offline processing of samples associated with the RS and PO, thereby increasing the fraction of time spent in power-saving modes such as deep sleep instead of light sleep or active communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless devices acquire timing and frequency information for paging occasions in real-time during active communication mode, then decoding accuracy and communication reliability are improved, but power consumption increases and time spent in power-saving modes decreases
Solution Approach 1:
The patent applies preliminary action by acquiring timing and frequency information from reference signals before the actual paging occasion occurs. The wireless device processes reference signals received in previous time instances to prepare decoding parameters in advance, so that when the paging occasion arrives, the device can immediately use pre-acquired timing and frequency information for accurate decoding without needing to acquire this information in real-time, thus reducing power consumption while maintaining decoding accuracy.
2Use of energy by moving object
If wireless devices process reference signals and paging samples offline rather than in real-time, then power savings increase and time in deep sleep mode increases, but processing complexity and latency may worsen
Solution Approach 1:
The patent implements preliminary action by performing reference signal processing and timing/frequency information acquisition before the paging occasion occurs. The wireless device uses offline processing of reference signals received in advance to prepare all necessary decoding parameters, so that when the paging occasion arrives, the device can quickly complete decoding using pre-computed information, thereby reducing actual processing latency during the paging occasion while enabling longer deep sleep periods.
Solution Approach 2:
The patent applies dynamics by implementing discontinuous reception (DRX) cycles that dynamically switch between active communication mode and deep sleep mode. The device alternates between these states based on predetermined DRX parameters, processing paging occasions only at specific intervals while remaining in deep sleep mode during other periods. This dynamic operation allows the device to optimize the balance between power savings and processing latency by adjusting DRX cycle lengths and active monitoring periods.
Data Source
AI summary
An apparatus may be provided that is configured to obtain a set of samples associated with a paging occasion (PO). The apparatus may further be configured to process at least one reference signal indicating time and frequency information. The apparatus may also be configured to process the set of samples associated with the PO based on the time and frequency information. The apparatus may be configured to adjust, based on processing the set of samples associated with the PO, a current mode of operation in a set of modes of operation for the wireless device.