Slot Format Indicator Resource Availability Signaling
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Solution Overview
Problem
In wireless communication systems, particularly in 5G networks using multi-hop architectures, there is a need to indicate unavailable resources to prevent power consumption and interference by ensuring that wireless nodes do not attempt to communicate using resources that are not available, which existing technologies fail to address effectively without compromising backward compatibility.
Innovation Solution
The proposed solution involves a slot configuration framework where resources are labeled as unavailable by using an updated slot format indicator (SFI) to inform wireless nodes, allowing them to refrain from using these resources, thereby ensuring efficient power utilization and interference-free communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If wireless nodes attempt to communicate using all allocated resources, then communication coverage is maximized, but power consumption increases and interference occurs on unavailable resources
Solution Approach 1:
The system performs preliminary action by indicating unavailable resources to wireless nodes before communication occurs. The base station sends resource availability information to UEs in advance, allowing them to proactively avoid transmitting on unavailable resources, thereby preventing wasted power consumption and potential interference before they occur.
2Use of energy by moving object
If resource availability information is indicated to wireless nodes, then power utilization efficiency improves, but system complexity increases
Solution Approach 1:
The base station acts as an intermediary that centralizes the determination of resource availability and communicates this information to wireless nodes. This intermediary approach allows complex resource management decisions to be made at the base station level while keeping individual wireless node devices simple, resolving the contradiction between improved power efficiency and system complexity.
3Adaptability or versatility
If existing slot configuration framework is used without modification, then backward compatibility is maintained, but unavailable resources cannot be explicitly indicated
Solution Approach 1:
The invention merges the resource availability indication function with the existing slot configuration framework by utilizing available fields such as the SFI (Slot Format Indicator) and combining them with resource availability information. This combination allows unavailable resources to be explicitly indicated while maintaining backward compatibility, as the indication is integrated into existing message structures rather than requiring separate new signaling mechanisms.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a central unit (CU) may determine a set of resources that is unavailable for use by a distributed unit (DU) of the CU, the set of resources including one or more resources. The CU may transmit information identifying the set of resources that is unavailable for use by the DU to cause an inferior node of the DU to refrain from using the set of resources that is unavailable for use by the DU. Numerous other aspects are provided.