Dynamic Physical Channel Allocation for Wireless Resource Efficiency
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Solution Overview
Problem
In the context of LTE and 5G NR systems, the semi-persistent scheduling (SPS) based data transmission mechanism for PDSCH leads to resource wastage as network devices periodically configure resources even when no data is sent, as UE needs to continuously monitor for potential data transmission.
Innovation Solution
A communication method where a network device determines candidate physical channels and sends a first physical channel with control information indicating an acknowledgment resource, allowing UE to send acknowledgments only when data is received, thereby avoiding periodic resource configuration and enabling flexible resource allocation based on service types and latency requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the network device periodically configures resources for UE through SPS mechanism, then the resource allocation is simplified and UE can receive PDSCH without continuous PDCCH delivery, but resources are wasted when no PDSCH is sent in a period
Solution Approach 1:
The patent transforms the static periodic resource configuration of SPS into a dynamic on-demand allocation mechanism. The network device determines candidate physical channels and sends first physical channels only when data needs to be transmitted, making the resource allocation flexible and adaptive to actual traffic conditions, thereby eliminating resource wastage while maintaining operational simplicity
Solution Approach 2:
The patent replaces the periodic resource configuration action with event-triggered resource allocation. Instead of periodically allocating resources regardless of data availability, the system now activates resource allocation only when there is actual data to transmit, converting a time-driven periodic process into an event-driven on-demand process
2Productivity
If the network device uses SPS-based data transmission mechanism, then the PDCCH delivery frequency is reduced, but the resource configuration cannot adapt to different service types and latency requirements
Solution Approach 1:
The patent introduces multiple configurable parameters including candidate physical channel sets, first information types, and acknowledgment resource configurations. These parameters can be dynamically adjusted based on service types and latency requirements, enabling the system to adapt to different traffic conditions while maintaining efficient PDCCH delivery through selective resource allocation
Solution Approach 2:
The patent creates a universal resource allocation framework that can handle multiple service types (e.g., eMBB, URLLC, mMTC) through a single flexible mechanism. The first physical channel can carry different types of data and control information, and acknowledgment resources can be configured differently based on service requirements, making the system multi-functional without requiring separate mechanisms for each service type
Data Source
AI summary
A network device sends a first physical channel to user equipment on resources of one or more candidate physical channels. Correspondingly, the user equipment monitors one or more candidate physical channels in a candidate physical channel set, to receive the first physical channel on the resources of the one or more candidate physical channels. A payload of the first physical channel includes control information and a transport block, the control information includes first information, the first information is used to indicate an acknowledgment resource to the user equipment, and the acknowledgment resource is a resource used by the user equipment to send acknowledgment information to the network device. After receiving the first physical channel, the user equipment sends the acknowledgment information to the network device on the acknowledgment resource; and correspondingly, the network device receives the acknowledgment information on the acknowledgment resource.