Multi-Band Channel Access Using Cross-Band Service Scheduling
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Solution Overview
Problem
High control signaling overhead and inefficient resource utilization in wireless communication networks operating over multiple frequency bands, particularly those requiring beamforming, such as the 60 GHz band, which hinders effective communication and resource utilization.
Innovation Solution
Implementing techniques for channel access that include transmitting indications of medium time intervals over a first RF band to facilitate communication on a second RF band, utilizing shared dedicated service periods (D-SPs), on-demand service periods (O-SPs), and contention-based access durations, reducing the need for beamforming and optimizing resource use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming is used for communication over the 60 GHz band, then communication reliability is improved, but control signaling overhead increases
Solution Approach 1:
The patent uses a first RF band (sub-7 GHz) as an intermediary channel to schedule and coordinate communications on the second RF band (60 GHz). The access point transmits scheduling information including medium time interval indications, service period allocations, and beamforming parameters via the first band, reducing the need for extensive control signaling over the second band while maintaining beamforming reliability.
2Productivity
If multi-band operation is implemented, then resource utilization is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple frequency bands (sub-7 GHz and 60 GHz) into a unified multi-band operation framework where a single access point coordinates communications across both bands. The access point manages medium time intervals, service periods, and beamforming operations across the bands, allowing devices to efficiently utilize resources on both bands without each device independently managing complex multi-band operations.
3Measurement precision
If separate signaling is transmitted to each client device for beamforming, then communication precision is improved, but signaling overhead increases
Solution Approach 1:
The patent segments control signaling into two parts: (1) Common scheduling information transmitted once via the first RF band that applies to multiple client devices, including medium time interval indications and service period allocations; and (2) Device-specific beamforming parameters included in the scheduling information for each client. This segmentation reduces redundant signaling while maintaining precise beamforming control for each device.
Data Source
AI summary
This disclosure provides methods, components, devices and systems for channel access techniques for multi-band operation. Some aspects more specifically relate to transmission of control signaling that on a first radio frequency (RF) band that facilitates wireless communication on a second RF band. In some examples, a first wireless communication device may transmit, via a first RF band, control signaling that includes one or more indications of a medium time interval for a second RF band for communication between the first wireless communication device and two or more second wireless communication devices. The medium time interval may include one or more dedicated service periods (D-SPs) that may be shared by two or more of the second wireless communication devices, one or more durations available for contention-based access for the second wireless communication devices via the first RF band, or one or more on-demand service periods (O-SPs).