Wireless Communication Apparatus Frequency Band Negotiation
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Solution Overview
Problem
Existing wireless communication systems, such as Wi-Fi Direct, face challenges in efficiently forming wireless networks between devices with different frequency band capabilities, particularly when a device adapted to only the 2.4 GHz band needs to connect with a device that supports both 2.4 GHz and 5.0 GHz bands, as they may inadvertently form a network using the 5.0 GHz band, which the first device cannot support.
Innovation Solution
A method where a wireless communication apparatus, adapted only to the 2.4 GHz band, determines through INTENT value comparison and negotiation whether to operate as a parent or child station, and adjusts its INTENT value to ensure the formation of a wireless network using the 2.4 GHz band, preventing the use of the 5.0 GHz band if it cannot support it.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If Wi-Fi Direct G/O negotiation is performed without frequency band consideration, then network formation speed is improved, but the network may use a frequency band (5.0 GHz) that not all devices support, causing connection failure
Solution Approach 1:
The patent applies preliminary action by determining frequency band compatibility and adjusting INTENT values before the G/O negotiation takes place. The wireless communication apparatus checks whether the terminal device supports the 5.0 GHz band, and if not, pre-adjusts its INTENT value to ensure it becomes the G/O and uses only the 2.4 GHz band. This preliminary check prevents connection failures while maintaining efficient network formation.
2Device complexity
If a device adapted to only 2.4 GHz band negotiates G/O status without frequency band awareness, then negotiation simplicity is improved, but the device may be assigned to a network role (CL station) that requires 5.0 GHz band, causing operational failure
Solution Approach 1:
The patent applies local quality by making the INTENT value adjustment specific to the frequency band capability of each device. Instead of changing the overall negotiation protocol, the patent locally modifies the INTENT value parameter based on the terminal device's frequency band support. This allows devices with different capabilities (2.4 GHz only vs. dual-band) to negotiate appropriately without increasing overall system complexity.
3Ease of operation
If the wireless communication apparatus always operates as CL station when terminal device requests G/O, then ease of connection is improved, but the network may be formed on 5.0 GHz band which the apparatus cannot support
Solution Approach 1:
The patent applies dynamics by making the G/O negotiation outcome dynamic based on frequency band compatibility. Instead of a fixed rule where the apparatus always becomes CL station, the apparatus dynamically adjusts its INTENT value based on whether the terminal device supports 5.0 GHz. If the terminal lacks 5.0 GHz support, the apparatus becomes G/O and ensures 2.4 GHz band usage. This dynamic adjustment maintains connection ease while ensuring frequency band compatibility.
Data Source
AI summary
A wireless communication apparatus may perform receiving, from a terminal device, a signal for forming a specific wireless network including the wireless communication apparatus and the terminal device. The wireless communication apparatus may perform determining whether the related information is related to a first frequency band. The wireless communication apparatus may perform determining, by comparing the terminal index value and an apparatus index value being set in advance in the wireless communication apparatus, whether the terminal device is more likely to become a parent station than the wireless communication apparatus. The wireless communication apparatus may perform forming a second wireless network in which a second frequency band is to be used, in a case where it is determined that the related information is related to the first frequency band and it is determined that the terminal device is more likely to become the parent station than the wireless communication apparatus.