Preamble Resource Block Signaling via Tone Mapping Lookup
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Solution Overview
Problem
In wireless communication protocols like OFDMA, the large number of possible resource block mappings leads to a large preamble, increasing power consumption and computational processing needs in receiver devices, which reduces battery life and efficiency.
Innovation Solution
A signaling mechanism that uses a tone mapping field to efficiently map resource blocks to receiver devices by employing a lookup table, reducing the size of the preamble and processing requirements, by indicating resource block allocations for a portion of the tone space rather than the entire channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large preamble is used to specify resource block assignments for all possible tone mappings, then complete resource block assignment information is provided, but power consumption increases and battery life decreases
Solution Approach 1:
The patent segments the tone space into multiple portions (e.g., first portion and second portion) and creates separate tone mapping fields for each portion. Instead of providing a single large preamble covering all possible mappings, the system divides the resource block assignment information into smaller segments, each handled by a separate tone mapping field. This reduces the size of each individual preamble segment while maintaining complete resource block assignment coverage across the entire tone space.
2Reliability
If a large preamble is used to specify resource block mappings, then all resource block assignments are covered, but computational processing requirements increase
Solution Approach 1:
The patent divides the resource block mapping information into multiple smaller tone mapping fields, each corresponding to a specific portion of the tone space. This segmentation reduces the computational complexity of processing each individual field while ensuring that the union of all fields covers the complete set of resource block mappings. The receiver device only needs to process the relevant tone mapping field for its assigned portion rather than analyzing a single large comprehensive preamble.
3Reliability
If the tone mapping field covers the entire tone space, then complete resource block assignment is achieved, but the size of the preamble increases
Solution Approach 1:
The patent divides the tone space into multiple portions and creates separate tone mapping fields for each portion. This segmentation allows the system to maintain complete resource block assignment accuracy across the entire tone space while keeping each individual tone mapping field compact. The overall preamble size is managed by distributing the information across multiple smaller fields rather than requiring one large field.
Solution Approach 2:
The patent introduces a new dimension by organizing tone mapping information not just by resource block assignments but also by tone space portions. This dimensional organization allows the system to efficiently represent the mapping information in a structured way that reduces redundancy and optimizes preamble size while maintaining complete coverage of all possible resource block assignments.
Data Source
AI summary
Disclosed herein are system, method, and computer program product embodiments for providing an efficient way to assign resource blocks to user receiver devices in a wireless communications protocol. For example, the method can receive a frame for a wireless communications protocol. The method can also extract a unique value from a tone mapping field in a preamble of the frame. The method can also look up a resource block allocation for a portion of the tone space in a lookup table using the unique value. Further, the method can extract an assignment field from the preamble based on the determined resource block allocation. The method can also determine an assigned resource block number based on the assignment field. The method can also assign a resource block corresponding to the assigned resource block number to a user receiver device.