Remote UE Signal Processing for D2D Power Reduction
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Solution Overview
Problem
In device-to-device (D2D) communication, remote UE experiences high power consumption during the discovery and connection establishment process with relay UE, as it needs to detect or receive messages on multiple resources, which is inefficient and consumes excessive battery power.
Innovation Solution
The signal processing method determines the specific resource used by the relay UE to send a message based on an initial message, allowing the remote UE to detect and receive messages only on that resource, thereby reducing power consumption by avoiding unnecessary resource scanning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If remote UE detects or receives messages on multiple resources during discovery and connection establishment, then message reception reliability is improved, but power consumption increases significantly
Solution Approach 1:
The patent applies preliminary action by having the remote UE determine the specific resource to be used before actually receiving or detecting messages. The network device indicates the resource in advance through first information, allowing the remote UE to prepare and focus its reception efforts on the predetermined resource, thereby avoiding the need to scan multiple resources and reducing power consumption while maintaining reliable message reception
2Measurement precision
If remote UE scans multiple resources to ensure message reception, then message detection accuracy is improved, but time consumption increases
Solution Approach 1:
The network device performs preliminary action by indicating the specific resource to be used in advance through first information. This allows the remote UE to directly monitor the predetermined resource without scanning multiple resources, thereby maintaining message detection accuracy while significantly reducing the time required for resource scanning and message reception
3Adaptability or versatility
If remote UE monitors all possible resources for discovery messages, then discovery completeness is improved, but device complexity increases
Solution Approach 1:
The network device performs preliminary action by indicating the specific resource to be used in advance through first information. This simplifies the remote UE's device complexity by eliminating the need to monitor all possible resources, while still ensuring discovery completeness as the indicated resource is specifically allocated for the remote UE's message reception
Data Source
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AI summary
This application provides a signal processing method and apparatus. In this application, first user equipment determines, based on a first message, a first resource used by second user equipment to send a second message, and detects and/or receives the second message on the first resource, so as to avoid excessively high power consumption caused when the first user equipment detects and/or receives the second message on many resources, thereby reducing power consumption of the first user equipment.