Bundled Frequency Division Multiplexing for Power-Limited Devices
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Solution Overview
Problem
Power-limited devices in wireless communication systems, such as those using LTE, face challenges in utilizing entire resource blocks due to power constraints, leading to decreased data rates, especially for time-sensitive communications like VoIP, as they cannot transmit effectively over allocated resource blocks.
Innovation Solution
Allocating a portion of a resource block over multiple Time Transmit Intervals (TTIs) to power-limited devices, allowing for transmission diversity and optimizing bandwidth utilization by assigning different portions of the resource block to multiple devices within the same TTIs, thereby enabling higher data rates for time-sensitive applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If power-limited devices are assigned entire resource blocks, then bandwidth utilization is optimized, but the devices cannot transmit effectively due to power constraints, leading to decreased data rates
Solution Approach 1:
The resource block is segmented into multiple portions, with each portion assigned to different devices across bundled TTIs. Power-limited devices receive specific portions (e.g., first portion in first TTI, second portion in second TTI) rather than entire resource blocks, enabling effective transmission within power constraints while maintaining overall bandwidth utilization.
Solution Approach 2:
The patent introduces a time dimension by bundling multiple TTIs together. Instead of allocating resource blocks within a single TTI, the system allocates portions across multiple bundled TTIs, allowing power-limited devices to transmit at higher data rates by spreading transmissions over time while other devices utilize the same resource blocks in different time intervals.
2Quantity of substance
If power-limited devices transmit over entire resource blocks, then bandwidth utilization is maximized, but power constraints prevent effective transmission
Solution Approach 1:
Resource blocks are divided into multiple portions that are allocated to different devices across bundled TTIs. Power-limited devices are assigned specific portions (e.g., first portion in first TTI, second portion in second TTI) enabling reliable transmission within power constraints while maintaining overall bandwidth utilization.
Solution Approach 2:
The allocation scheme dynamically assigns different portions of resource blocks to different devices across bundled TTIs. Power-limited devices receive portions suited to their power capabilities in each TTI, while other devices utilize remaining portions, creating a dynamic allocation that adapts to varying power constraints and maintains transmission reliability.
3Device complexity
If power-limited devices are assigned resource blocks in time division multiplexing, then resource allocation is simplified, but data rates decrease for time-sensitive communications
Solution Approach 1:
Resource blocks are segmented into multiple portions allocated across bundled TTIs. Power-limited devices receive specific portions in each TTI rather than entire resource blocks, enabling higher data rates for time-sensitive communications while maintaining manageable allocation complexity through structured portion-based assignment.
Solution Approach 2:
The patent adds a time dimension by bundling multiple TTIs and allocating resource block portions across this extended time frame. This allows power-limited devices to achieve higher data rates by utilizing portions across multiple TTIs while maintaining relatively simple allocation procedures through the structured approach.
4Quantity of substance
If entire resource blocks are allocated to power-limited devices, then bandwidth utilization is optimized, but the devices transmit at decreased data rates due to power limitation
Solution Approach 1:
Resource blocks are divided into multiple portions that are allocated to different devices across bundled TTIs. Power-limited devices are assigned specific portions (e.g., first portion in first TTI, second portion in second TTI) enabling them to transmit at higher data rates within power constraints while maintaining overall bandwidth utilization.
Solution Approach 2:
The system introduces a time dimension by bundling multiple TTIs together for resource allocation. Power-limited devices can transmit at higher data rates by utilizing portions of resource blocks across multiple bundled TTIs, while other devices utilize the same resource blocks in different time intervals, effectively increasing speed without sacrificing bandwidth utilization.
Data Source
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AI summary
Methods and apparatuses are provided that facilitate allocating a portion of a resource block to a power-limited device for communicating therewith. The power-limited device may not be capable of transmitting over an entire resource block due to power limitations; thus, a portion of the resource block can be assigned thereto, allowing for allocating at least a different portion of the resource block to at least one different device to optimize communications over the resource block. In addition, the portion of the resource block can be allocated across one or more bundled time transmit intervals (TTI) to allow for effective communication of time-sensitive data, such as voice over internet protocol (VoIP).