Shared Resource Allocation in Wireless Systems
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Solution Overview
Problem
Conventional wireless communication systems face challenges in managing shared resources, particularly in distinguishing packets from multiple mobile devices and ensuring efficient use of resources, leading to potential message loss and operational hampering due to lack of exclusive access.
Innovation Solution
A method and apparatus that determine when a mobile device's buffer content level reaches a predetermined threshold, allowing for exclusive use of a shared resource for a set time, with a checker and analyzer evaluating acknowledgement sets to ensure appropriate acknowledgments are collected before releasing the resource.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple mobile devices share a common E-DCH resource simultaneously, then resource utilization efficiency is improved, but packet identification and acknowledgment reliability deteriorate due to inability to distinguish packets from different devices
Solution Approach 1:
The patent segments the shared E-DCH resource by introducing device-specific identification mechanisms. Each mobile device is assigned a unique identifier (such as a radio network temporary identifier or preamble sequence) that is embedded with or associated with its packets. This segmentation allows the base station to distinguish and separately process packets from different devices while they share the same physical resource, thereby maintaining both high resource utilization and reliable packet identification.
2Reliability
If exclusive use of shared resource is granted to a mobile device for a set time, then message loss is prevented and communication reliability is improved, but resource utilization efficiency deteriorates due to potential idle time when device does not transmit
Solution Approach 1:
The patent implements a periodic scheduling mechanism where mobile devices are granted exclusive access to the E-DCH resource in periodic time slots or frames. Each device is assigned specific time intervals during which it can transmit without contention. This periodic allocation ensures that when a device has data to transmit, it has exclusive access preventing message loss, while the periodic structure allows the base station to efficiently manage and switch between multiple devices, optimizing overall resource utilization compared to continuous exclusive allocation.
3Measurement precision
If buffer content level is continuously monitored to determine exclusive resource access, then transmission timing precision is improved, but system complexity and energy consumption increase
Solution Approach 1:
The patent combines the buffer monitoring function with the existing packet generation and transmission scheduling processes in the mobile device. Instead of implementing a separate continuous monitoring system, the buffer content level check is integrated into the normal data plane operations. The device monitors its buffer level as part of its transmission scheduling decision-making process, triggering exclusive resource access requests only when the buffer reaches a predetermined threshold level. This merging approach achieves precise transmission timing control while avoiding the overhead of dedicated continuous monitoring hardware or software modules.
Data Source
AI summary
A base station can employ a shared resource, such as a control channel, for communication with a mobile device. The mobile device can be granted the exclusive access to the shared resource for a limited time. The exclusive access can be such that there is not a limit in message size that can be transferred across the shared resource. To improve operation, the exclusive grant can be applied until it is determined that appropriate packets are transferred.