Wireless LAN Signal Reception via Channel-Separated SIG-B Fields
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Solution Overview
Problem
Current wireless LAN systems face inefficiencies in transmitting and receiving resource allocation information for multi-users, particularly in managing channel resources and aligning field information across different channels.
Innovation Solution
A method where a station in a wireless LAN system receives resource allocation information through one channel and data is received on a different channel, using the resource allocation information from the first channel instead of the second channel, allowing for efficient distribution of load across channels and alignment of resource allocation fields.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If resource allocation information is transmitted on the same channel as data, then channel resource management becomes simpler, but load distribution across channels becomes unbalanced and field alignment becomes complex
Solution Approach 1:
The patent segments the transmission by separating resource allocation information (SIG-B field) from data transmission across different channels. Specifically, SIG-B fields are transmitted on a first channel while data is transmitted on a second channel, dividing the communication load to balance channel utilization and simplify resource management on each channel.
Solution Approach 2:
The patent introduces a dimensional separation in the frequency domain by assigning different channels (frequency resources) to different types of information. This dimensional change allows independent optimization of control information transmission and data transmission, resolving the conflict between management simplicity and load distribution.
2Productivity
If per channel SIG-Bs are transmitted on different channels, then load distribution across channels improves, but the complexity of receiving and aligning resource allocation information increases
Solution Approach 1:
The patent creates equipotential conditions for receiving SIG-B fields by ensuring that all per-channel SIG-B fields are transmitted on the same first channel. This allows the receiving station to collect all resource allocation information from a single channel, eliminating the need for complex cross-channel field alignment while maintaining balanced load distribution through the separate data channel.
3Ease of operation
If resource allocation information is received on the channel where data is transmitted, then reception simplicity improves, but channel capacity is reduced and multi-user efficiency decreases
Solution Approach 1:
The patent segments the communication resources by transmitting SIG-B fields and data on separate channels. This segmentation allows the system to maintain reception simplicity for control information while preserving channel capacity for data transmission, thereby supporting efficient multi-user communication without compromising ease of reception.
Solution Approach 2:
The patent introduces an intermediary channel arrangement where SIG-B fields serve as control information that mediates the data transmission process. By transmitting this control information on a dedicated first channel, the system simplifies the reception process for resource allocation while maintaining the second channel's full capacity for multi-user data transmission.
Data Source
AI summary
A method for receiving a signal by a station in a wireless LAN system, according to an embodiment of the present invention, comprises the steps of: receiving one of a plurality of per channel SIG-Bs, comprised in a SIG-B field, via a first channel among the transmission bandwidth of a multi-user (MU) frame comprising SIG-B field and data; and receiving the data of the MU frame on a second channel differing from the first channel via which the per channel SIG-Bs have been received. Although any one of the plurality of per channel SIG-Bs is transmitted on the second channel, the data of the MU frame is received by means of the per channel SIG-Bs that are transmitted on the first channel instead of the per channel SIG-Bs that are transmitted on the second channel.