Uplink Resource Grant Management in Wireless Networks
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Solution Overview
Problem
Existing wireless networks face inefficiencies in managing uplink resources due to fixed proactive grants, leading to wasted resources when devices do not have data to transmit, and collisions when multiple devices attempt simultaneous transmissions.
Innovation Solution
A method and apparatus for managing uplink resource grants in wireless networks, where a wireless base station assigns exclusive and non-exclusive resource blocks to devices based on their attributes and historical usage, allowing devices to share resources while minimizing collisions through randomization and collision detection using RSSI and RSRP measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed proactive grants are assigned to all devices at fixed intervals, then resource allocation is simplified and predictable, but uplink resources are wasted when devices do not have data to transmit
Solution Approach 1:
The system dynamically adjusts uplink grant allocation based on device activity. Instead of fixed periodic grants for all devices, the base station monitors device states and assigns grants adaptively - providing grants to active devices while skipping inactive ones, thereby reducing resource waste while maintaining manageable complexity
Solution Approach 2:
The system changes the parameter of grant assignment from fixed periodic intervals to variable intervals based on device activity state. When devices are inactive, grant intervals are extended or grants are skipped; when active, grants are provided more frequently, optimizing resource utilization without excessive complexity
2Productivity
If multiple devices share uplink resources to improve utilization, then resource efficiency increases, but collisions occur when devices transmit simultaneously
Solution Approach 1:
The base station implements feedback mechanisms to monitor uplink transmission status and detect collisions. When collisions are detected or device activity is monitored, the base station adjusts future grant assignments to reduce simultaneous transmissions, thereby maintaining high resource utilization while improving transmission reliability through adaptive control
Solution Approach 2:
The system performs preliminary assessment of device activity states before assigning uplink grants. By checking which devices have data to transmit beforehand, the base station can pre-coordinate grant assignments to minimize simultaneous transmissions, reducing collisions before they occur while still enabling resource sharing
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances uplink resource utilization by reducing collisions and optimizing resource allocation, ensuring efficient use of shared resources among diverse wireless devices with varying data transmission needs.
Implementation Method 1
collision detection using RSSI and RSRP measurements
Implementation Method 2
collision detection using RSSI and RSRP measurements
Data Source
AI summary
The present invention relates to methods and apparatus for managing uplink resource grants in wireless networks. An exemplary method embodiment includes a mobile terminal: receiving from a base station a first uplink resource grant schedule including a first uplink resource grant and a second uplink resource grant, the first uplink resource grant giving the mobile terminal an exclusive right to use a first set of resource blocks on a recurring basis and the second uplink resource grant giving the mobile terminal a non-exclusive right to use a second set of resource blocks on a recurring basis; and using, by the mobile terminal, the second set of resource blocks to transmit data to the base station during at least a first time interval of the first period of time, said first period of time including multiple time intervals during which the mobile terminal has been granted the right to transmit data.