Unified Pre-Emption Indication for Full-Duplex Resource Control
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Solution Overview
Problem
Existing wireless communications systems face inefficiencies and high overhead signaling costs due to separate downlink and uplink pre-emption indications for full duplex communications, which can cause interference and resource wastage in full duplex wireless devices.
Innovation Solution
A common pre-emption indication is introduced for full duplex communications, allowing simultaneous downlink and uplink resource management, reducing signaling overhead and improving resource utilization efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate downlink and uplink pre-emption indications are used, then resource management can be performed for downlink and uplink independently, but signaling overhead increases and communication efficiency decreases
Solution Approach 1:
The patent combines separate downlink pre-emption indication and uplink pre-emption indication into a single unified pre-emption indication message. This unified indication contains both downlink and uplink resource pre-emption information, reducing signaling overhead while maintaining the ability to manage downlink and uplink resources independently through the same indication mechanism.
2Productivity
If full duplex communication is implemented, then spectrum efficiency improves, but self-interference occurs between transmission and reception
Solution Approach 1:
The patent applies preliminary anti-action by providing pre-emption indications that inform user equipment in advance about upcoming downlink or uplink transmissions that may cause self-interference. This allows the receiving device to prepare for potential interference by adjusting reception parameters or temporarily suspending vulnerable transmissions, thereby mitigating the harmful effects of self-interference in full duplex communication.
3Productivity
If separate pre-emption indications are transmitted for downlink and uplink, then resource allocation can be optimized independently, but communication latency increases
Solution Approach 1:
The patent merges downlink and uplink pre-emption indications into a single unified indication message that is transmitted simultaneously or in close succession. This reduces the total transmission time compared to sending separate indications, thereby reducing communication latency while still enabling independent resource allocation optimization for both downlink and uplink through the unified indication structure.
Data Source
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AI summary
Methods, systems, and devices for wireless communications are described. A receiving device (such as a user equipment (UE)) may receive from a transmitting device (such as a base station), a configuration of full duplex communication resources for a set of slots. The receiving device may receive a pre-emption indication identifying that at least a portion of the full duplex communication resources in one or more slots of the set of slots is unavailable for communication, and may determine a remaining portion of the full duplex communication resources in the one or more slots based on the received pre-emption indication. The receiving device may then communicate with the transmitting device using the remaining portion of the full duplex communication resources.