Contention-Based Uplink Access Resource Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communication systems, particularly in LTE, face challenges in reducing uplink latency and optimizing resource allocation for contention-based access, leading to inefficiencies in data throughput and increased control channel overhead.
Innovation Solution
A method for providing contention-based uplink access by determining and signaling grant information for a subset of system resources, measuring power and noise metrics to generate state values, and adjusting transmission probabilities, allowing user devices to schedule transmissions effectively within allocated resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If contention-based uplink transmissions are allowed on shared channel resources, then uplink latency is reduced and data throughput is improved, but control channel overhead increases and resource allocation complexity increases
Solution Approach 1:
The patent segments the system resources by allocating a specific subset of uplink channel resources exclusively for contention-based access. This segmentation allows terminals to independently access predefined resources without complex centralized scheduling, reducing both latency and control overhead while maintaining manageable resource allocation complexity through the base station's configuration of resource subsets.
2Loss of energy
If a subset of system resources is allocated for contention-based access, then control channel overhead is reduced, but resource allocation flexibility decreases
Solution Approach 1:
The patent implements dynamic resource allocation by allowing the base station to configure and update the subset of resources available for contention-based access based on real-time system conditions. The base station can dynamically adjust the size, location, and characteristics of the contention resource subset, providing both reduced control overhead and maintained flexibility through adaptive reconfiguration rather than static allocation.
3Productivity
If transmission probability is adjusted based on system conditions, then resource utilization efficiency is improved, but system complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where the base station monitors system conditions such as interference levels, resource utilization, and transmission success rates, then adjusts the configuration of contention-based resources and provides feedback to terminals about appropriate transmission probabilities. This feedback loop enables efficient resource utilization while keeping terminal complexity low, as terminals follow base station guidance rather than independently calculating complex transmission strategies.
Data Source
AI summary
Methods and apparatus for contention-based access in a wireless communication system are disclosed. A base station may determine a contention-based resource allocation comprising a subset of available system resources. Information related to the contention-based resources may be sent to a user device. In addition, state information may be provided to the UE. The UE may generate and send a contention-based uplink transmission consistent with the allocated resources and state information.