LTE MTC Code Sequences for Resource Block Identification
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Solution Overview
Problem
Current GSM/GPRS networks face increased costs and inefficiencies due to the need to maintain multiple Radio Access Technologies as more Machine-Type Communication (MTC) devices are deployed, limiting the benefits of licensed spectrum and resource allocation.
Innovation Solution
Implementing low-cost, low-power MTC devices that support the LTE radio interface, using a wireless communications system with a wireless device and node that transmit specific code sequences to identify physical resource blocks and control format indicators, enabling efficient resource allocation and migration from GSM/GPRS to LTE networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If MTC devices continue to use GSM/GPRS networks, then device cost and coverage are maintained, but network operational cost increases and spectrum efficiency deteriorates
Solution Approach 1:
The patent changes the radio access technology parameter from GSM/GPRS to LTE, enabling MTC devices to operate on LTE networks with reduced bandwidth (e.g., 1.4 MHz) and simplified requirements, thereby improving spectrum efficiency while maintaining device cost-effectiveness
Solution Approach 2:
The patent enables MTC devices to utilize the LTE network infrastructure, allowing a single network platform to serve both traditional mobile services and machine-type communications, thereby improving overall network resource utilization and spectrum efficiency
2Productivity
If MTC devices are migrated to LTE networks, then spectrum efficiency and resource allocation improve, but device complexity and operational costs increase
Solution Approach 1:
The patent applies parameter changes by reducing LTE requirements for MTC devices, including downlink bandwidth reduction, peak data rate reduction, single Rx RF chain adoption, and half duplex FDD operation, thereby lowering device complexity while maintaining resource allocation efficiency
Solution Approach 2:
The patent enables the use of simplified, lower-cost LTE MTC devices that meet reduced performance requirements, effectively replacing more complex traditional MTC devices while maintaining adequate functionality for machine-type communications
3Adaptability or versatility
If multiple Radio Access Technologies are maintained for MTC devices, then device compatibility is preserved, but network operational cost and complexity increase
Solution Approach 1:
The patent promotes universal adoption of LTE for MTC devices, allowing the network to operate a single Radio Access Technology platform that can serve all MTC devices, thereby reducing network complexity and operational costs while maintaining broad device compatibility through standardized LTE interfaces
Data Source
AI summary
There is provided a wireless communications system (1000) including a wireless device (100) and a wireless communications node (300). The wireless communications node (300) transmits in a reference signal sequence to the wireless device (100) a first code sequence (485) and a second code sequence (486). The first code sequence (485) carries information identifying a physical resource block that carries an enhanced physical downlink control channel (ePDCCH) and the second code sequence (486) carries information identifying a control format indicator.