Wireless LAN Resource Allocation for OFDMA Multi-User Payloads
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Solution Overview
Problem
Current wireless local area network (WLAN) systems face challenges in efficiently allocating resources to multiple users using orthogonal frequency division multiple access (OFDMA) technology due to a lack of effective indication information for resource allocation, leading to suboptimal payload transmission in dense user environments.
Innovation Solution
The method involves generating and transmitting protocol data units (PDUs) with control information that includes a first and second field, enabling efficient resource allocation by specifying user channel configurations and frequency division indexes, allowing for flexible and efficient resource distribution among multiple users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If OFDMA technology is used to transmit payload to multiple users, then system throughput and resource utilization are improved, but efficient indication information for resource allocation is not included in the related art making it difficult to effectively utilize the technology
Solution Approach 1:
The control information is segmented into multiple fields: a first field indicating resource allocation for each user, and a second field indicating resource allocation for remaining resources. This segmentation allows efficient indication of resource allocation to multiple users while maintaining system throughput.
Solution Approach 2:
The patent introduces a new dimension in resource indication by using multiple fields with different granularities - one field for specific user allocations and another for remaining resources. This multi-dimensional approach enables comprehensive resource allocation indication that was missing in the related art.
2Device complexity
If resource allocation information is not efficiently indicated, then implementation complexity is reduced, but resource allocation efficiency for multiple users deteriorates
Solution Approach 1:
Instead of providing complete detailed allocation information for all resources, the patent uses partial indication - the first field covers specific user allocations while the second field handles remaining resources. This partial action approach maintains low implementation complexity while achieving efficient resource allocation.
3Manufacturing precision
If detailed resource allocation information is provided for each user, then resource allocation precision is improved, but control information overhead increases
Solution Approach 1:
The control information is divided into two fields: the first field provides precise allocation for specific users, while the second field efficiently indicates remaining resource allocation. This segmentation achieves high resource allocation precision while minimizing total control information overhead through differentiated indication strategies.
Data Source
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AI summary
The present disclosure relates to technologies for sensor networks, machine-to-machine (M2M) communication, machine-type communication (MTC), and the Internet of Things (IoT). The present disclosure may be used for intelligent services based on these technologies (smart homes, smart buildings, smart cities, smart or connected cars, healthcare, digital education, retail business, security and safety, and the like). For sending a payload to multiple users through OFDMA in a wireless LAN system, it is difficult to efficiently allocate resources for OFDMA by using the resource allocation configuration of the existing PPDU. Hence, there is proposed a new PPDU including a first field and a second field.