Semiautonomous Uplink Scheduling Using UE Interference Measurements
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies and high latency in uplink scheduling decisions due to centralized control by network entities, leading to resource wastage and interference, particularly when based on outdated buffer status reports and channel state information.
Innovation Solution
Implement semiautonomous uplink scheduling at the user equipment (UE) by configuring time and frequency resources, allowing the UE to perform interference measurements and request uplink transmission resources and parameters, with the network entity approving or declining these requests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If centralized scheduling control is used by network entities, then resource allocation is managed centrally, but latency increases and resource utilization deteriorates due to outdated buffer status reports and channel state information
Solution Approach 1:
The patent segments the centralized scheduling function into distributed autonomous scheduling at UE level and centralized coordination at network level. Each UE independently performs scheduling decisions based on local buffer status reports and channel state information, eliminating the latency of centralized decision-making while the network maintains overall resource coordination through conflict detection and resolution mechanisms
Solution Approach 2:
The patent implements preliminary action by having UEs perform interference measurements and prepare scheduling decisions in advance based on current buffer status and channel conditions. The autonomous scheduler at each UE proactively determines resource allocation before network coordination is needed, reducing latency while maintaining resource efficiency through pre-computed scheduling decisions
2Reliability
If centralized scheduling control is used by network entities, then resource allocation is managed centrally, but interference increases and resource wastage occurs due to outdated information
Solution Approach 1:
The patent applies preliminary action by having UEs perform interference measurements and assess channel conditions in advance of making scheduling decisions. Each UE autonomously evaluates current buffer status reports and channel state information to determine optimal resource allocation, ensuring scheduling accuracy reflects real-time conditions rather than outdated network-centric information
Solution Approach 2:
The patent implements feedback mechanisms where UEs continuously report buffer status and channel state information to the network, and the autonomous scheduler at each UE uses this feedback to dynamically adjust scheduling decisions. This closed-loop feedback ensures scheduling accuracy while minimizing interference through real-time adaptation to changing conditions
3Productivity
If autonomous scheduling is implemented at UE, then scheduling decisions are made locally with current information, but device complexity increases
Solution Approach 1:
The patent segments the complex autonomous scheduling function into modular components at the UE: buffer status monitoring, channel state information processing, interference measurement, and resource allocation decision-making. This segmentation allows each module to be independently optimized and managed, reducing the perceived complexity while maintaining high resource utilization through coordinated autonomous decisions
Data Source
AI summary
Methods, systems, and devices for wireless communication at a user equipment (UE) are described. A UE may receive control signaling including an indication of time and frequency resources that are configured for semiautonomous uplink scheduling from the UE. The UE may then transmit a semiautonomous uplink scheduling message including a request for a set of uplink transmission resources or parameters for an upcoming uplink transmission. The UE may determine the set of uplink transmission resources or parameters based on one or more interference measurements performed on the time and frequency resources that are configured for semiautonomous uplink scheduling from the UE. The UE may then receive, in response to transmitting the semiautonomous uplink scheduling message, a message approving or declining the request for the set of uplink transmission resources or parameters.