UE Sidelink Resource Multiplexing for Flexible Scheduling
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Solution Overview
Problem
In LTE sidelink communication, the allocation of SLSS and PSBCH resources interferes with PSCCH, PSSCH, and PSDCH, making flexible scheduling challenging, especially for low-latency communications.
Innovation Solution
User equipment multiplexes SLSS and PSBCH with PSCCH, PSSCH, and PSDCH in the same slot, allowing for flexible scheduling by allocating at least one of these channels in separate resources and enabling transmission or reception using any of these resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SLSS and PSBCH are allocated in separate resources from PSCCH, PSSCH, and PSDCH, then signal transmission and reception can be performed, but flexible scheduling is difficult and latency increases
Solution Approach 1:
The patent merges the allocation of SLSS/PSBCH with PSCCH/PSSCH/PSDCH by allowing them to be multiplexed in the same slot. Specifically, the first resource for SLSS/PSBCH and the second resource for PSCCH/PSSCH/PSDCH are allocated within the same slot, enabling flexible scheduling while maintaining signal transmission reliability. This resolves the contradiction by combining previously separate resource allocations into a unified scheduling framework.
2Object-affected harmful factors
If SLSS and PSBCH resources are removed from PSCCH, PSSCH, and PSDCH allocation, then channel interference is reduced, but scheduling flexibility is lost
Solution Approach 1:
The patent segments the slot into multiple resources: a first resource for SLSS/PSBCH and a second resource for PSCCH/PSSCH/PSDCH. This segmentation allows both types of signals to be transmitted simultaneously without mutual interference while maintaining scheduling flexibility. The segmentation principle resolves the contradiction by dividing the time-frequency resource space into distinct regions that can be independently allocated and scheduled.
Solution Approach 2:
The patent introduces a new dimension to resource allocation by allowing multiplexing in the same slot through additional time or frequency dimensions. Instead of removing SLSS/PSBCH from the scheduling process, the system adds dimensional separation (e.g., different time symbols or frequency resources within the same slot) to accommodate both signal types without interference. This dimensional approach maintains scheduling flexibility while preventing channel interference.
3Adaptability or versatility
If resources are allocated for both SLSS/PSBCH and PSCCH/PSSCH/PSDCH in the same slot, then scheduling flexibility is improved, but resource allocation complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring the resource allocation patterns for SLSS/PSBCH and PSCCH/PSSCH/PSDCH before actual communication occurs. The system establishes predetermined rules for assigning first and second resources within slots, reducing the complexity of real-time resource allocation decisions. This preliminary configuration enables flexible scheduling while simplifying the device's operational complexity.
Data Source
AI summary
A user equipment includes a control unit that controls transmission or reception of a sidelink signal in which a first resource and a second resource are multiplexed in a same slot, wherein at least one of SLSS (Sidelink synchronization signal) or PSBCH (Physical Sidelink Broadcast Channel) is allocated in the first resource, and at least one of PSCCH (Physical Sidelink Control Channel), PSSCH (Physical Sidelink Shared Channel), and PSDCH (Physical Sidelink Discovery Channel) is allocated in the second resource; a reception unit that monitors the first resource, the second resource, or the first resource and the second resource; and a transmission unit that performs transmission using any one of the first resource, the second resource, and the first resource and the second resource.