3.5 GHz Access Point Discovery Through Supplemental Legacy Bands
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Solution Overview
Problem
The increasing demand for RF spectrum outpaces the current regulatory systems for allocation and usage, leading to challenges in discovering and associating wireless devices with standalone access points operating on new operational bands like 3.5 GHz, as many devices are not configured to scan or communicate on these bands due to the prevalence of legacy bands.
Innovation Solution
Implementing techniques such as reduced frame transmission intervals, beacon frames, and dynamic configuration to manage communication overhead, along with multi-link devices using legacy bands to supplement new operational bands, ensuring efficient association and usage of new bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If devices are configured to scan and communicate on legacy bands, then device compatibility and ease of association are improved, but the ability to utilize new operational bands (e.g., 3.5 GHz) is limited
Solution Approach 1:
The access point operates simultaneously on multiple frequency bands (legacy bands and new operational bands like 3.5 GHz), enabling it to serve both legacy devices and new band-capable devices. This multi-functionality allows the system to maintain broad device compatibility while utilizing the additional spectrum capacity of new bands.
Solution Approach 2:
The patent segments the wireless communication system into standalone mode (new band only) and supplemental mode (new band plus legacy band). This segmentation allows different device types to be served through different operational modes, enabling new band utilization while maintaining backward compatibility.
2Productivity
If standalone APs operate on new operational bands, then spectrum efficiency is improved, but device discovery and association difficulty increases
Solution Approach 1:
The patent introduces an intermediary mechanism where the access point transmits advertisement frames on legacy bands to announce its presence on new operational bands. This intermediary approach (using legacy bands as a communication bridge) enables devices to discover and associate with standalone APs on new bands without requiring direct scanning of the new band.
Solution Approach 2:
The access point performs preliminary actions by transmitting advertisement frames containing information about available channels and bands before actual data communication begins. This preliminary announcement enables devices to prepare for association with the new band without requiring real-time scanning or complex discovery procedures.
3Speed
If advertisement frames are transmitted frequently, then device association speed is improved, but communication overhead increases
Solution Approach 1:
The patent implements dynamic transmission intervals for advertisement frames, where the interval can be adjusted based on network conditions and requirements. This dynamic approach allows the system to optimize between association speed and overhead reduction by changing the transmission frequency adaptively rather than using a fixed interval.
Solution Approach 2:
The system changes the temporal parameter (transmission interval) of advertisement frames based on operational mode and network conditions. In supplemental mode, frames are transmitted at standard intervals, while in standalone mode, the interval is adjusted to balance discovery capability with overhead reduction.
Data Source
AI summary
This disclosure provides methods, devices and systems for transmitting and receiving, between an access point (AP) and one or more stations (STAs) in a basic service set (BSS), within a 3.5 GHz bandwidth. In some examples, the AP may generate a first advertisement frame comprising information configured to enable one or more communication devices to associate with the apparatus for wireless communications via a first channel in a first operating band. In some examples, the AP may output the first advertisement frame for transmission according to a first periodic interval.