Methods and equipment for reserving resources in NR V2X

By receiving the resource reservation period information from the sidelink control information, determining the selection window, and applying the CEILING function, the complexity of UE resource selection is solved, the efficiency of SL communication is improved, and the complexity of blind decoding is reduced.

CN115362728BActive Publication Date: 2026-05-26LG ELECTRONICS INC
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Patent Information

Application Number
CN202180025912.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2020-06-05
Filing Date
2021-04-12
Publication Date
2026-05-26
Estimated Expiration
2041-04-12

AI Technical Summary

Technical Problem

In existing technologies, UEs have difficulty efficiently selecting resources when receiving sidelink control information, which increases the complexity of resource selection. Furthermore, in the case of multiple resource pools, the complexity of blind decoding by the UE is further increased.

Method used

By receiving sidelink control information including resource reservation period information, the size of the selection window is determined, and the CEILING function is applied to calculate the number of time slots within the resource selection window, and suitable resources are selected for SL communication.

Benefits of technology

It effectively solves the complexity problem of UE when selecting resources, improves the efficiency of SL communication, and reduces the complexity of blind decoding.

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Abstract

Provided is a method for performing wireless communication by a first device and an apparatus supporting the method. The method may include: receiving first side-link control information (SCI) from a second device in a time slot, including information related to a resource reservation period; determining the size of a selection window based on a remaining packet delay budget; obtaining a value N by applying a ceiling function to a value obtained by dividing the size of the selection window by the resource reservation period; determining to reserve resources in N time slots spaced unit-intervals of the resource reservation period after the time slot in which the second device receives the first SCI; and selecting resources for SL communication within the selection window based on the determination, where N is a positive integer.
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