Single-DCI Multi-Carrier Scheduling for Low-Latency PXSCHs
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Solution Overview
Problem
Existing wireless networks lack the ability to schedule multiple PUSCHs/PDSCHs per a single scheduling DCI and support multiple SPS/CG opportunities via a single DCI, which hampers efficient communication for traffic with large payloads and short deadlines, such as extended reality (XR) traffic, leading to increased communication delay and power usage.
Innovation Solution
Implementing multi-slot PXSCH scheduling with a single DCI and multi-SPS/CG over multiple carriers via a single DCI to enhance communication efficiency and reduce latency and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional separate DCI scheduling is used for each PUSCH/PDSCH, then scheduling control is simple and reliable, but communication delay increases and productivity decreases
Solution Approach 1:
The patent combines multiple separate DCI scheduling operations into a single unified DCI that can schedule multiple PUSCHs/PDSCHs across multiple component carriers simultaneously. This merging approach reduces the number of scheduling messages needed, thereby decreasing communication delay and improving productivity while managing scheduling complexity through standardized DCI structure design.
Solution Approach 2:
The patent creates a universal DCI structure that can function as a single scheduler for multiple carriers and multiple channels. This multi-functional DCI design allows one control message to perform the work of multiple separate scheduling operations, reducing overall communication delay and enhancing system productivity without proportionally increasing complexity.
2Use of energy by moving object
If multiple separate DCIs are used for scheduling multiple PUSCHs/PDSCHs, then scheduling precision is maintained, but power consumption increases
Solution Approach 1:
By merging multiple DCI scheduling operations into a single DCI, the patent reduces the total number of control messages transmitted and processed, thereby lowering power consumption at both UE and network side. The unified DCI structure maintains scheduling precision through dedicated fields for resource allocation, modulation and coding schemes, and other critical parameters for each scheduled channel.
Solution Approach 2:
The patent uses a template-based DCI structure where common scheduling parameters are defined once and replicated across multiple component carriers and channels. This copying approach ensures consistent scheduling precision across all scheduled resources while reducing the overall message size and processing requirements, thereby lowering power consumption compared to transmitting fully separate DCIs for each channel.
3Productivity
If single DCI schedules multiple PUSCHs/PDSCHs across multiple CCs, then productivity improves, but device complexity increases
Solution Approach 1:
The patent segments the DCI structure into distinct fields and sub-structures, each responsible for specific scheduling parameters of different component carriers and channels. This segmentation allows the single DCI to manage multiple PUSCHs/PDSCHs systematically, improving productivity through efficient resource allocation while controlling complexity through modular design that enables independent processing of each segment.
Solution Approach 2:
The patent extends the scheduling capability from a single carrier/single channel dimension to a multi-carrier/multi-channel dimension by adding structured fields that accommodate multiple component carriers. This dimensional extension allows one DCI to schedule across multiple carriers simultaneously, dramatically improving productivity while managing complexity through standardized field structures that generalize the scheduling approach across dimensions.
Data Source
AI summary
Apparatuses and methods for single DCI scheduling multi-carrier for multi-slot PXSCHS and multi-SPS/CG PDSCH are described. An apparatus is configured to receive a configuration via RRC signaling, a MAC-CE, or DCI. The configuration is associated with a schedule of a set of CCs including at least two CCs. Each CC of the at least two CCs includes at least two PDSCHs or PUSCHs. The apparatus is also configured to communicate, via the set of CCs, with a network node based on the schedule. Another apparatus is configured to transmit a configuration via RRC signaling, a MAC-CE, or DCI. The configuration is associated with a schedule of a set of CCs including at least two CCs. Each CC of the at least two CCs includes at least two PDSCHs or PUSCHs. The other apparatus is also configured to communicate, via the set of CCs, with a UE based on the schedule.