MTC Bandwidth Allocation in Wireless Access Systems
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Solution Overview
Problem
Current wireless access systems lack a detailed method for allocating uplink bandwidth to each device in Machine Type Communication (MTC) environments, particularly in legacy LTE systems, which hinders efficient MTC operations.
Innovation Solution
A method for allocating a new system bandwidth to MTC terminals in a wireless access system, where system bandwidth indication information is transmitted to the terminals, allowing them to configure their uplink and downlink bandwidths adjacent to legacy system bandwidths in the frequency axis, enabling adaptive allocation of specific uplink bandwidths and radio resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a new system bandwidth is allocated to MTC terminals adjacent to legacy system bandwidth, then MTC communication efficiency is improved, but device complexity increases due to dual bandwidth management
Solution Approach 1:
The patent segments the system bandwidth into two distinct parts: legacy system bandwidth and MTC-specific system bandwidth. This segmentation allows MTC terminals to operate in a dedicated frequency resource block adjacent to the legacy bandwidth, enabling efficient MTC communication without interfering with legacy operations while maintaining manageable complexity through clear resource separation.
2Adaptability or versatility
If specific uplink bandwidth is allocated to each terminal, then MTC operation support is improved, but radio resource allocation complexity increases
Solution Approach 1:
The patent applies local quality by allocating specific uplink bandwidth resources to individual MTC terminals based on their particular needs and characteristics. Each terminal receives a customized bandwidth allocation within the MTC system bandwidth, allowing tailored resource allocation that optimizes MTC operations while the overall framework maintains manageable complexity through standardized allocation procedures.
3Reliability
If downlink/uplink ratio is controlled without modifying legacy TDD configuration, then system compatibility is improved, but flexibility in TDD configuration is reduced
Solution Approach 1:
The patent achieves universality by designing the bandwidth allocation mechanism to work with existing legacy TDD configurations without requiring modifications. The same allocation framework can be applied across different TDD configurations and system setups, providing broad compatibility while maintaining the ability to control downlink/uplink ratios through the standardized adjacent bandwidth allocation approach.
Data Source
AI summary
The present invention is used for a wireless access system supporting a machine type communication (MTC), and provides a method for allotting a new system bandwidth for MTC and an apparatus for supporting the same. According to an embodiment of the present invention, a method for allotting a system bandwidth for an MTC terminal in a wireless access system supporting a machine type communication (MTC) includes the steps of: causing an MTC terminal to receive an upper layer signal containing the system bandwidth indication information representing an MTC system bandwidth allotted to the MTC terminal; and causing the MTC terminal to transmit uplink control information through the MTC system bandwidth represented by the system bandwidth indication information. In this case, the MTC system bandwidth can be constructed by connecting to a legacy system bandwidth in the direction of the frequency axis.