MTC Device Access via Dedicated Bandwidth Segmentation
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Solution Overview
Problem
Machine-type communication (MTC) devices in wireless communication systems, such as LTE and LTE-Advanced, face challenges in accessing networks due to their limited bandwidth, which prevents them from receiving or transmitting data in cells with wider system bandwidth, leading to failure in data transmissions.
Innovation Solution
A method and apparatus that generate and broadcast system information with dedicated resource allocation for MTC device access, allowing MTC devices to transmit random access preambles using specific resource allocations, enabling them to access the network even if they cannot utilize the full system bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If MTC devices use narrower bandwidth to reduce cost, then device cost is reduced, but data transmission capability is lost in cells with wider system bandwidth
Solution Approach 1:
The patent segments the system bandwidth into a first bandwidth portion and a second bandwidth portion. The first bandwidth portion is allocated for MTC devices with limited bandwidth capability, while the second bandwidth portion is allocated for legacy UEs requiring full bandwidth. This segmentation allows MTC devices to operate successfully in cells with wider system bandwidth without compromising their cost-effectiveness.
Solution Approach 2:
The patent applies local quality by providing different bandwidth allocations to different device types within the same cell. MTC devices receive allocation in the first bandwidth portion optimized for their limited capability, while legacy UEs access the second bandwidth portion. This localized optimization ensures each device type receives appropriate resources matched to its capabilities.
2Reliability
If MTC devices are allocated dedicated resource blocks, then data transmission reliability is improved, but system resource utilization is reduced
Solution Approach 1:
The patent applies partial action by allocating only the necessary first bandwidth portion to MTC devices rather than providing full system bandwidth. This partial allocation ensures reliable data transmission for MTC devices while leaving the second bandwidth portion available for legacy UEs, thereby maintaining overall system resource utilization efficiency.
Data Source
AI summary
A method of performing machine-type communication (MTC) device access in a network of a wireless communication system is disclosed. The method comprises generating system information comprising a resource allocation dedicated to the MTC device access for a MTC device not capable of utilizing full system bandwidth of the network; and broadcasting the system information.