Resource Selection for Power Saving in Side Link Communication
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Solution Overview
Problem
Low-capacity user equipment, such as cell phones and home devices, face issues with unnecessary power consumption during side link (SL) transmissions due to forced wake-up during on durations, leading to conflicts and inefficient data processing.
Innovation Solution
A method and apparatus for selecting resources based on power-saving information to determine idle or power-saving resources, ensuring consistent understanding between user equipment and reducing unnecessary power consumption by coordinating resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user equipment remains active during on duration for receiving and transmitting in SL transmissions, then communication reliability is improved, but power consumption increases unnecessarily when there are no packets to transmit or receive scheduling signaling
Solution Approach 1:
The patent implements dynamic resource selection where user equipment can switch between different resource types (power-saving information resources, target transmission resources, idle resources) based on actual communication needs. This dynamic adaptation allows the system to maintain reliability when needed while reducing power consumption during idle periods, directly resolving the contradiction between communication reliability and power consumption.
Solution Approach 2:
The patent changes the state parameter of resource usage by introducing three distinct resource states: power-saving information resources for low-activity periods, target transmission resources for active communication, and idle resources for completely dormant periods. By changing which resource state is active based on traffic conditions, the system resolves the contradiction between maintaining communication capability and reducing power consumption.
2Loss of information
If user equipment is forced to wake up during on duration, then scheduling signaling can be received, but unnecessary power consumption occurs when there are no packets to transmit
Solution Approach 1:
The patent enables user equipment to autonomously determine whether to wake up during on duration by checking if there are packets to transmit or scheduling signaling to receive. The device serves itself by making intelligent decisions about wake-up necessity, avoiding forced wake-ups when unnecessary, thus reducing power consumption while ensuring scheduling signaling is received when needed.
Solution Approach 2:
The patent performs preliminary checks before forcing wake-up by determining whether there are packets to transmit or scheduling signaling to receive. This preliminary assessment prevents unnecessary wake-ups in advance, allowing the system to skip wake-up cycles when not needed, thereby reducing power consumption while maintaining the ability to receive scheduling signaling when required.
3Productivity
If SL communication uses multicast for transmitting information, then communication efficiency is improved, but resource conflicts occur between multiple user equipment
Solution Approach 1:
The patent segments the resource pool into three distinct types: power-saving information resources, target transmission resources, and idle resources. This segmentation allows different user equipment to operate on different resource types simultaneously, reducing conflicts while maintaining multicast efficiency. By dividing the resource space, the system achieves both high productivity and reduced resource conflicts.
Solution Approach 2:
The patent introduces an additional dimension of resource classification beyond traditional time-frequency resources by adding the dimension of resource function (power-saving information, target transmission, idle). This dimensional expansion allows the system to resolve conflicts by assigning different functional dimensions to different user equipment, maintaining multicast efficiency while avoiding resource conflicts.
Data Source
AI summary
This application discloses a method and apparatus for selecting a resource, a method and apparatus for processing power saving, and a device, and relates to the technical field of communication. The method includes: obtaining a target resource associated with power-saving information; and determining a first resource in the target resource; the first resource comprising at least one of the following: a resource of the power-saving information, a resource of target transmission, and an idle resource.