User Equipment Deep Discontinuous Reception Search Space Segmentation
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Solution Overview
Problem
In LTE systems, user equipment (UE) in a connected state experiences reduced power-saving effects due to the need for prolonged listening times to detect PDCCH commands, especially when in a non-active state, which increases power consumption.
Innovation Solution
Configuring a deep discontinuous reception (DRX) state for UE, where downlink transmission notification information is detected only within a common search space during routine active periods, reducing the need for extensive search times and spaces, thereby enhancing power-saving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE performs blind detection in both common search space and specific search space during active state, then the reliability of detecting PDCCH commands is improved, but the power consumption increases due to prolonged listening time
Solution Approach 1:
The patent segments the search space into two parts: common search space and specific search space. During routine active state, the UE only performs blind detection in the common search space, which is a smaller subset of the total search space. This segmentation allows the UE to maintain detection capability for common notifications while reducing the overall detection burden and power consumption.
Solution Approach 2:
The patent implements periodic action by defining specific DRX cycles with routine active states and non-active states. During routine active state, the UE performs limited blind detection only in the common search space. This periodic pattern allows the UE to alternate between active detection periods and sleep periods, reducing average power consumption while maintaining system reliability.
2Reliability
If the UE extends the active state duration to ensure complete data transceiving, then the completeness of data transmission is improved, but the power-saving effect is reduced
Solution Approach 1:
The patent applies preliminary action by sending downlink notification information in advance during the routine active state through blind detection in the common search space. This allows the network to notify the UE of upcoming data transmissions before the UE would normally need to remain active, enabling the UE to enter non-active state earlier while still being informed of subsequent transmission requirements.
3Measurement precision
If the UE performs blind detection in the specific search space, then the detection precision of UE-specific PDCCH commands is improved, but the detection time and power consumption increase
Solution Approach 1:
The patent segments the detection process into two phases: during routine active state, only common search space detection is performed; during triggered active state, specific search space detection is activated. This segmentation allows the system to balance between detection precision and detection time by only performing precise specific search space detection when actually needed.
Data Source
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AI summary
Disclosed are a processing method, a communicating method, and devices relating to the technical field of communication. In order to improve the power-saving effect of a user equipment, the present invention provides a technical solution as follows: when the user equipment in a connected state is configured, by a base station, with and executes a deep discontinuous reception, and when the user equipment is in a routine active state, and is not in a triggered active state, the user equipment detects downlink transmission notification information belonging to the user equipment within only a common search space between the common search space and a specific search space of each transmission time interval; and performs a processing according to the downlink transmission notification information upon detection of the downlink transmission notification information belonging to the user equipment.