Full Duplex Traffic Scheduling Differentiation in WWAN
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently differentiating and scheduling full duplex (FD) traffic combinations in wireless wide area networks (WWANs), leading to potential increased latency and reduced spectrum efficiency.
Innovation Solution
The method involves a base station (BS) transmitting a downlink control information (DCI) message to a user equipment (UE) indicating the scheduled FD uplink (UL) and downlink (DL) traffic scheduling combination, allowing the UE to differentiate between various FD combinations and adjust its operations accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If full duplex traffic scheduling combinations are not differentiated, then device complexity is reduced, but latency increases and spectrum efficiency deteriorates
Solution Approach 1:
The patent segments the scheduling process by dividing full duplex traffic into distinct uplink and downlink components with different scheduling combinations. The base station separately schedules PDSCH/PUSCH, SPS PUSCH, and configured grant PUSCH, allowing differentiated handling of each traffic type to reduce latency while maintaining manageable complexity through structured segmentation
Solution Approach 2:
The base station performs preliminary scheduling actions by pre-configuring multiple FD UL/DL traffic scheduling combinations and selecting appropriate combinations before actual data transmission. This preliminary setup enables efficient latency-critical transmissions by having scheduling decisions prepared in advance rather than making them in real-time during data flow
2Productivity
If full duplex traffic scheduling combinations are differentiated, then spectrum efficiency is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by assigning different scheduling characteristics to different parts of the full duplex traffic. Specifically, downlink traffic (PDSCH) and uplink traffic (PUSCH) are scheduled with different combinations and parameters, allowing each direction to be optimized for its specific requirements, thereby improving overall spectrum efficiency while keeping the complexity localized to each scheduling domain
Solution Approach 2:
The system implements dynamic scheduling by allowing the base station to flexibly select from multiple pre-configured FD UL/DL traffic scheduling combinations based on current channel conditions, traffic demands, and QoS requirements. This dynamic adaptation enables the system to optimize spectrum efficiency in real-time without requiring a completely complex rigid structure
3Reliability
If UE monitors for DL traffic during UL transmission periods, then DL traffic reception is ensured, but energy consumption increases
Solution Approach 1:
The base station performs preliminary action by providing advance notice to the UE about whether DL traffic will be transmitted during the UE's UL transmission periods. This提前 notification allows the UE to plan its reception behavior in advance, ensuring reliable DL traffic reception when needed while avoiding unnecessary monitoring and energy consumption when no DL traffic is scheduled
Solution Approach 2:
The UE implements self-service by autonomously adjusting its monitoring behavior based on the base station's scheduling decisions. When the base station indicates no DL traffic during UL periods, the UE automatically suspends monitoring to save energy, and when DL traffic is indicated, the UE activates monitoring to ensure reliable reception, making the system energy-efficient through UE自主 decision-making
Data Source
AI summary
This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for implementing signaling for indicating a scheduled full duplex (FD) uplink (UL) and downlink (DL) traffic scheduling combination for differentiation of FD traffic. In some aspects, a BS may transmit a downlink control information (DCI) message that includes an indication of the scheduled FD UL and DL traffic scheduling combination. The FD UL and DL traffic scheduling combination may identify scheduled UL and DL transmissions for FD mode operation. The UE may receive the DCI message and identify the scheduled FD UL and DL traffic scheduling combination. In some aspects, the BS may provide a DCI message to the UE that indicates whether a DL transmission is being scheduled that at least partially overlaps with a scheduled UL transmission. The UE may initiate a power save mode based on the received DCI message.