Sidelink Slot Format Configuration for Flexible Resource Allocation
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in sidelink resource allocation, particularly in scheduling resources for uplink slots, downlink+uplink slots, and flexible+uplink slots, which limits flexible communications and data rates in full-duplex scenarios.
Innovation Solution
The system receives a control signal from a base station indicating a set of durations for uplink resources and additional resources, and based on a slot format configuration, permits sidelink communications on these resources, enabling flexible resource allocation and simultaneous sidelink transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sidelink transmission is permitted only on slots scheduled for downlink resources, then interference with uplink resources is avoided, but resource utilization efficiency and data rates are limited
Solution Approach 1:
The patent implements dynamic slot format configuration where the base station can flexibly indicate different slot formats (first format for downlink-only, second format for sidelink-permitted) based on real-time traffic conditions and interference requirements. This dynamic adjustment allows the system to optimize resource utilization while preventing interference when uplink resources are needed
Solution Approach 2:
The patent changes the parameter of slot format configuration to enable sidelink transmission. By receiving control signals that indicate specific slot formats from the base station, the UE can switch between different transmission modes, allowing sidelink communication on previously restricted uplink slots when the network determines it is safe to do so
2Adaptability or versatility
If complex slot structures are supported to enable simultaneous transmission and reception, then full-duplex capability is achieved, but device complexity and scheduling difficulty increase
Solution Approach 1:
The patent segments the slot into distinct formats with clear definitions. Each slot format (first format, second format, third format) represents a specific configuration of transmission and reception opportunities. This segmentation simplifies the complex full-duplex operation by providing discrete, manageable slot structures that UEs can implement without excessive complexity
Solution Approach 2:
The patent creates a universal slot format configuration mechanism that can accommodate multiple scenarios. The base station's control signal system can indicate different slot formats to serve various purposes: downlink-only slots, sidelink-permitted slots, and full-duplex slots, making the system adaptable to different traffic conditions without requiring separate specialized structures for each case
3Reliability
If sidelink transmission is restricted to ensure reliable uplink communication, then uplink reliability is maintained, but sidelink communication flexibility and latency are degraded
Solution Approach 1:
The patent enables continuous sidelink communication by identifying and designating specific slots with second format that are configured for sidelink transmission. This creates a continuous opportunity for sidelink communication rather than restricting it to isolated instances, reducing latency while maintaining uplink reliability through proper slot format management
Data Source
AI summary
Methods, systems, and devices for wireless communication at a first user equipment (UE) are described. A UE may receive a control signal indicating a set of durations. A duration of the set of durations may be scheduled for uplink resources and additional resources including downlink resources, flexible resources, or both. The UE may further receive an indication of a slot format configuration permitting sidelink communications on the uplink resources during the duration scheduled for the uplink resources and the additional resources. Upon identifying that sidelink communications are permitted, the UE may transmit a sidelink transmission using the uplink resources and during the duration.