HE-SIG-B User-Field Signaling for Flexible RU Scheduling
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Solution Overview
Problem
The challenge is to achieve flexible frequency scheduling in wireless communications while minimizing the overhead for reporting control signaling, which increases with greater scheduling flexibility.
Innovation Solution
A transmission apparatus and method that generates a transmission signal with a non-legacy preamble comprising two channel fields for subband channels, each containing user-specific fields for per-user allocation information, and relocates BCC blocks between these fields to minimize overhead and improve channel efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If flexibility in frequency scheduling is increased to achieve better multiuser diversity effect, then communication efficiency is improved, but overhead for reporting control signaling increases
Solution Approach 1:
The patent divides the control signaling into two separate channel fields (first channel field and second channel field) corresponding to different subband channels. Each channel field contains segmented user-specific fields that carry per-user allocation information. This segmentation allows the control signaling to be distributed across multiple channels, enabling flexible frequency scheduling while managing the overhead through structured organization of control information.
2Measurement precision
If more signaling bits are allocated to report control signaling for flexible frequency scheduling, then resource assignment accuracy is improved, but transmission overhead increases
Solution Approach 1:
The patent applies local quality by assigning different numbers of user fields to different channel fields based on their specific needs. The first channel field and second channel field can have different configurations of user-specific fields, allowing each subband channel to receive appropriate control signaling resources according to its local requirements. This enables precise resource assignment for each subband while optimizing the overall transmission overhead.
Data Source
AI summary
A communication apparatus includes circuitry configured to generate an uplink (UL) single-user (SU) partial bandwidth transmission packet using a first format that contains a first preamble and a data field, wherein the first preamble includes a high efficiency signaling B (HE-SIG-B) field containing resource unit (RU) allocation information indicating one of a plurality of RU arrangements and includes a plurality of user fields; and a transmitter configured to transmit the UL SU partial bandwidth transmission packet to an access point (AP). The one of the plurality of RU arrangements indicates a plurality of RUs which respectively correspond to the plurality of user fields, and one RU of the plurality of RUs is an RU allocated to the AP and other RU(s) of the plurality of RUs are RU(s) unallocated to the AP. The first format is also used for a downlink (DL) multi-user (MU) transmission.