Broadband Pilot Signal Hopping Patterns for Wireless Resource Allocation
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently allocating resources and controlling power for broadband pilot signals, particularly in multiple-input multiple-output (MIMO) systems, where devices with varying activity levels require different scheduling and power management to maintain signal-to-noise ratio and data rate.
Innovation Solution
The implementation of broadband pilot signal hopping patterns that allow devices to hop across frequency resource blocks within reserved bandwidth, with periodicity configured based on device activity levels, enabling efficient resource allocation and power control by specifying when and where broadband pilot data is transmitted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If broadband pilot signals are transmitted continuously across the entire bandwidth, then signal quality measurement is improved, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent divides the broadband pilot signal transmission into segmented frequency resource blocks that are allocated to different devices based on their activity levels and scheduling needs. Instead of continuous full-bandwidth transmission, the bandwidth is segmented into multiple resource blocks that can be dynamically assigned, improving resource allocation efficiency while maintaining sufficient signal quality measurement capability for each device.
Solution Approach 2:
The patent implements periodic transmission of broadband pilot signals at configured intervals rather than continuous transmission. Devices transmit pilot signals at periodic opportunities determined by their activity levels, which reduces overall resource consumption while still providing sufficient measurement data for power control and resource allocation decisions.
2Measurement precision
If pilot signal transmission frequency is increased for all devices, then scheduling accuracy is improved, but system power consumption deteriorates
Solution Approach 1:
The patent applies different pilot signal transmission frequencies to different devices based on their local characteristics, specifically their activity levels. High activity level devices transmit pilot signals more frequently for better scheduling accuracy, while low activity level devices transmit less frequently to conserve power. This localized differentiation resolves the contradiction by matching transmission frequency to actual device needs rather than applying a uniform approach to all devices.
Solution Approach 2:
The patent dynamically changes the transmission parameters of pilot signals, specifically the frequency of transmission, based on device activity levels. The system adjusts the periodicity and frequency resource block allocation according to each device's scheduling needs, allowing high activity devices to use higher transmission frequencies for accurate scheduling while low activity devices use lower frequencies to reduce power consumption.
3Device complexity
If frequency resource blocks are allocated statically, then device complexity is reduced, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent implements dynamic frequency resource block allocation where the system can adaptively assign different resource blocks to different devices based on their activity levels and scheduling requirements. Rather than static allocation, the resource block indices and periodicity are dynamically determined, allowing the system to optimize resource allocation efficiency while maintaining manageable complexity through standardized hopping pattern generation.
Data Source
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AI summary
Systems and methodologies are described that facilitate defining and utilizing hopping patterns to transmit broadband pilot signals in a wireless communications network. Portions of bandwidth can be dedicated to transmitting the broadband pilot data, and patterns can be utilized to hop across frequencies in given time periods to effectively utilize the entire dedicated bandwidth. Moreover, the periodicity for transmitting the data is configurable to allow devices requiring additional scheduling (e.g., high activity devices) to transmit the broadband pilot data more frequently. The hopping patterns can also hop across cyclic shifts of the patterns to provide optimum diversity for transmitting broadband pilot signals.