Sidelink Response Information Resource Allocation
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Solution Overview
Problem
In sidelink communication systems, such as those in Internet of Vehicles (IoV), there is no base station to schedule uplink and downlink data and response information transmission, leading to challenges in ensuring reliable and collision-free transmission of response information between user equipment (UE).
Innovation Solution
A method and apparatus for determining and indicating the location of time-frequency resources for response information transmission in sidelink communication systems, where UE can monitor and measure signal interference to select unoccupied resources, ensuring reliable transmission of response information between data transmitters and receivers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If direct sidelink communication is implemented between UE without base station scheduling, then equipment overhead is reduced and communication efficiency is improved, but response information transmission cannot be scheduled leading to resource collisions and transmission unreliability
Solution Approach 1:
The patent enables UE to autonomously determine and select time-frequency resources for response information transmission without base station scheduling. The UE monitors interference from other UE, autonomously selects unoccupied resources, and transmits response information directly,实现ing self-service resource allocation that eliminates the need for base station involvement while ensuring reliable transmission
Solution Approach 2:
The patent implements preliminary monitoring of time-frequency resources by UE before transmission. The UE monitors interference from other UE in advance, identifies unoccupied resources beforehand, and prepares for response information transmission on selected resources, ensuring collision-free communication without base station scheduling
2Reliability
If base station scheduling is used for uplink and downlink communication, then response information transmission is reliable and collision-free, but equipment overhead increases and direct communication capability is lost
Solution Approach 1:
The patent extracts the resource scheduling function from the base station and transfers it to the UE. The base station no longer needs to schedule response information resources, reducing its control overhead. The UE takes over the scheduling function by autonomously monitoring interference and selecting resources, eliminating the need for base station involvement in sidelink resource allocation
Solution Approach 2:
The patent introduces interference monitoring as an intermediary mechanism between UE for resource selection. The UE monitors interference from other UE as an intermediary step to identify unoccupied time-frequency resources, enabling autonomous resource allocation without base station scheduling while ensuring collision-free transmission
3Productivity
If UE directly transmit user data through sidelink without base station, then communication efficiency is improved, but there is no mechanism to schedule response information transmission causing resource collisions
Solution Approach 1:
The patent implements feedback through interference monitoring. The UE continuously monitors interference from other UE on time-frequency resources and uses this feedback information to select unoccupied resources for response information transmission. This feedback mechanism enables autonomous resource selection that prevents collisions while maintaining direct communication efficiency
Solution Approach 2:
The patent performs preliminary interference monitoring and resource selection before response information transmission. The UE monitors the time-frequency resources in advance, identifies unoccupied resources beforehand, and prepares for transmission on selected resources, preventing collisions before they occur and maintaining communication efficiency
Data Source
AI summary
A method for transmitting response information includes: a location of a time frequency resource for the transmission of the response information by a data receiver of user data during response information transmission is determined; the location of the time frequency resource for the transmission of the response information is indicated to the data receiver; and response information transmitted by the data receiver is received at the location of the time frequency resource.