Dynamic Bandwidth Management for Millimeter-Wave Stations
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Solution Overview
Problem
Current millimeter-wave communication systems, such as WiGig and IEEE 802.11ad, operate with fixed channel bandwidths, limiting flexibility and compatibility with emerging standards, necessitating the ability to dynamically manage bandwidth while maintaining compatibility with legacy systems.
Innovation Solution
Implementing dynamic bandwidth management (DBWM) methods that allow for variable channel bandwidths by using directional multi-gigabit (DMG) traffic specification elements and coexistence techniques within and between basic service sets, enabling STA devices to request and allocate different channel bandwidths while ensuring backward compatibility with legacy devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed channel bandwidth is used in millimeter-wave systems, then compatibility with current IEEE 802.11ad systems is maintained, but flexibility for emerging standards and dynamic bandwidth management is limited
Solution Approach 1:
The patent implements dynamic bandwidth management that allows channel bandwidth to be adjusted from 2.16 GHz to 4.32 GHz based on network conditions and device capabilities. The system dynamically selects bandwidth configurations through coordination between AP and STAs, enabling adaptability while managing complexity through standardized procedures.
Solution Approach 2:
The patent changes the bandwidth parameter from a fixed value to a variable that can be configured as 2.16 GHz or 4.32 GHz. This is achieved through modified channelization schemes and bandwidth indication fields in management frames, allowing the system to adapt bandwidth without fundamentally changing the architecture.
2Productivity
If dynamic bandwidth management is implemented, then network throughput and power efficiency are enhanced, but compatibility with legacy devices must be maintained
Solution Approach 1:
The patent segments the 60 GHz spectrum into multiple 2.16 GHz channels that can be bonded to form 4.32 GHz channels. Legacy devices can operate on single 2.16 GHz channels while advanced devices can utilize bonded channels, allowing coexistence of different bandwidth requirements within the same network.
Solution Approach 2:
The access point acts as an intermediary that manages bandwidth allocation and coordinates between legacy and advanced devices. The AP receives bandwidth capability information from STAs and makes centralized decisions about channel allocation, ensuring compatibility while enabling advanced functionality.
3Adaptability or versatility
If variable channel bandwidths are allowed, then support for emerging standards like IEEE 802.11aj is enabled, but channel management and coordination become more complex
Solution Approach 1:
The patent creates a universal channel management framework that can handle both 2.16 GHz and 4.32 GHz operations through the same basic mechanisms. Management frames include bandwidth indication fields that work across different standards, and the channel bonding mechanism provides a unified approach that supports multiple bandwidth configurations without requiring separate management protocols.
Data Source
AI summary
Embodiments of a user station (STA) and methods for operating in a millimeter-wave basic service set (BSS) are generally described herein. In some embodiments, a STA transmits a request, using a first channel with a first bandwidth, for an allocation to communicate data on a second channel with a second bandwidth different from the first bandwidth. The request can include a directional multi-gigabit (DMG) traffic specification (TSPEC) element with a value representative of the second bandwidth. The STA may receive the allocation of the second bandwidth in an Extended Schedule element. The STA may transmit data on the second channel with the second bandwidth responsive to receiving the allocation.