Uplink Resource Scheduling Indicator for Multi-Subframe Allocation
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Solution Overview
Problem
Current radio communication systems, particularly in LTE and future 5G networks, face challenges in efficiently scheduling uplink resources, especially in scenarios with high demand for uplink subframes, where existing mechanisms lack flexibility and cannot accommodate different resource allocations between subframes, leading to wasteful DL transmissions and limitations in analog beamforming and frequency diversity.
Innovation Solution
The proposed solution involves a method and system that include an indicator in control messages to distinguish between single-subframe and multi-subframe scheduling schemes, allowing the resource allocation field to be interpreted in either the frequency or time domain, enabling flexible resource allocation formats and accommodating different allocations in various subframes through a single UL grant, thereby reducing the need for multiple grants and enhancing scheduling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-subframe scheduling scheme is used, then the resource allocation can be simply interpreted in the frequency domain, but the system cannot accommodate different resource allocations between subframes and requires multiple grants leading to wasteful DL transmissions
Solution Approach 1:
The patent introduces dynamic interpretability of the resource allocation field based on a scheduling scheme indicator. When multi-subframe scheduling is indicated, the same resource allocation field dynamically changes meaning to represent time-domain allocations for different subframes rather than only frequency-domain allocations, allowing the system to adapt to varying scheduling requirements without increasing complexity
Solution Approach 2:
The resource allocation field is designed to serve multiple functions depending on the scheduling scheme. It can interpret frequency-domain allocations for single-subframe scheduling or time-domain allocations for multi-subframe scheduling, eliminating the need for separate fields and reducing overall system complexity while improving scheduling efficiency
2Adaptability or versatility
If multiple UL grants are transmitted to accommodate different resource allocations, then different allocations can be provided for various subframes, but this increases the number of DL transmissions causing waste and reducing efficiency
Solution Approach 1:
The patent merges multiple resource allocation indications into a single UL grant by introducing a scheduling scheme indicator that switches the interpretation mode of the resource allocation field. This consolidation allows the network to indicate different time-domain resource allocations for multiple subframes in one transmission, reducing DL transmission overhead and energy waste while maintaining allocation flexibility
Solution Approach 2:
The patent changes the interpretation parameters of the resource allocation field based on the scheduling scheme indicator. When multi-subframe scheduling is selected, the field parameters are reinterpreted to encode time-domain allocation information rather than frequency-domain information, enabling flexible resource allocation without requiring additional transmissions
3Device complexity
If existing scheduling mechanisms are used, then the system maintains simple single-subframe scheduling, but it cannot enable frequency diversity over time or accommodate analog beamforming requirements
Solution Approach 1:
The patent introduces dynamic interpretability of the resource allocation field based on a scheduling scheme indicator. When multi-subframe scheduling is indicated, the same resource allocation field dynamically changes meaning to represent time-domain allocations for different subframes rather than only frequency-domain allocations, allowing the system to adapt to varying scheduling requirements without increasing complexity
Solution Approach 2:
The resource allocation field is designed to serve multiple functions depending on the scheduling scheme. It can interpret frequency-domain allocations for single-subframe scheduling or time-domain allocations for multi-subframe scheduling, eliminating the need for separate fields and reducing overall system complexity while improving scheduling efficiency
Data Source
AI summary
The present embodiments herein provide methods, apparatuses and a system for the purpose of scheduling resources to a UE (11) by a network node (12). The UE or CE (11) is configured to receive (210), from the network node (12), a control message, comprising information about a resource allocation as well as an indicator indicating whether a single-subframe scheduling scheme or a multi-subframe scheduling scheme. The CE (11) then retrieves the indicator and act according the information associated with the indicator.