HT Control Field Buffer Information for Uplink Resource Requests
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Solution Overview
Problem
Current wireless local area networks (WLANs) face challenges in efficiently managing resource requests for uplink multi-user transmissions, particularly in accurately allocating radio resources due to limitations in existing buffer information representation and scalability in IEEE 802.11 standards.
Innovation Solution
A method and device for transmitting a resource request in WLANs that generates a High Throughput (HT) Control field with buffer information for queued media access control (MAC) protocol data units (MPDUs), including a resource request MPDU with a header and payload, to request radio resource allocation via a wireless communication channel, utilizing a scale factor for improved accuracy and scalability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If detailed buffer information is provided for resource requests, then resource allocation accuracy is improved, but message complexity increases
Solution Approach 1:
The buffer information is segmented into multiple fields within the resource request message: a first field indicating the number of buffered MPDUs and a second field indicating the total buffer size. This segmentation allows detailed resource allocation information to be provided while maintaining message structure and manageability, resolving the contradiction between detail level and complexity.
Solution Approach 2:
The patent introduces a new dimension for buffer information representation by adding the total buffer size field alongside the number of MPDUs field. This multi-dimensional approach provides more comprehensive resource allocation data without simply increasing the complexity of a single field, enabling more accurate resource requests through additional informational dimensions.
2Productivity
If buffer information is added to resource request messages, then resource allocation efficiency is improved, but message size increases
Solution Approach 1:
The patent changes the parameters of the resource request message by incorporating specific buffer information fields (number of MPDUs and total buffer size) that enable more efficient resource allocation. These parameter additions provide the necessary information for improved productivity while keeping the message structure standardized and the size increase controlled through efficient field encoding.
3Adaptability or versatility
If existing IEEE 802.11 buffer representation is used, then compatibility is maintained, but scalability is limited
Solution Approach 1:
The patent creates a universal resource request message structure that serves multiple functions: it maintains compatibility with existing IEEE 802.11 standards while simultaneously providing enhanced buffer information capabilities. The message format can accommodate both traditional resource requests and detailed buffer status reports, making it versatile across different WLAN scenarios and future-proofing the system for scalability.
Data Source
AI summary
A method for transmitting a resource request for an uplink (UL) multi-user (MU) transmission is described. A High Throughput (HT) Control field that includes buffer information corresponding to media access control (MAC) protocol data units (MPDUs) that are queued for transmission by a first communication device is generated by the first communication device. The buffer information indicates a number of bytes for the MPDUs that are queued for transmission. A resource request MPDU that includes the HT Control field is generated by the first communication device. The resource request MPDU is transmitted by the first communication device to a second communication device via a wireless communication channel to request an allocation of radio resources for the UL MU transmission by the second communication device.