NAN Terminal Mode Switching for D2D Range and QoS
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Solution Overview
Problem
Current device-to-device (D2D) communication technologies, such as Bluetooth and WiFi, face limitations in providing a wider transmission range and higher quality of service (QoS) for proximity-based services, especially in crowded environments and indoors, where power consumption and efficient resource allocation are critical.
Innovation Solution
A radio resource scheduling method and apparatus for neighbor awareness networking (NAN) that allows a NAN terminal to switch between WiFi mode and NAN mode, utilizing a CTS-to-self frame to manage communication, enabling efficient power allocation and communication based on a NAN cluster.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If D2D communication technologies (Bluetooth, WiFi) are used for proximity-based services, then communication capability is provided, but transmission range and quality of service are limited
Solution Approach 1:
The system dynamically switches between WiFi mode and NAN mode based on operational requirements. The NAN terminal in AP capability can transition between these modes to optimize both transmission range and quality of service, with the NAN mode specifically designed to extend range while maintaining reliable QoS through structured resource scheduling
Solution Approach 2:
The invention changes the operational parameters by introducing NAN mode with specific scheduling parameters (resource units, time slots, frequency resources) that differ from conventional WiFi. This parameter change enables extended transmission range while maintaining quality of service through optimized resource allocation in the NAN cluster
2Length of moving object
If NAN mode is activated for extended range communication, then transmission range increases, but power consumption may increase
Solution Approach 1:
The NAN mode operates with periodic resource allocation using structured time slots and resource units. This periodic structure allows terminals to sleep between active transmission intervals, reducing overall power consumption while maintaining extended transmission range capability when needed
Solution Approach 2:
The system dynamically switches between WiFi mode and NAN mode based on operational requirements. This dynamic mode switching allows the system to use power-efficient WiFi for standard operations and only activate NAN mode when extended range is required, optimizing the balance between transmission range and power consumption
3Reliability
If resource allocation is optimized for NAN cluster communication, then quality of service improves, but device complexity increases
Solution Approach 1:
The NAN resource space is segmented into distinct resource units with specific time slots and frequency resources. This segmentation simplifies the scheduling complexity by providing a structured framework where resources are pre-defined and allocated in discrete units, making QoS management more manageable despite the enhanced capabilities
4Adaptability or versatility
If mode switching between WiFi and NAN is implemented, then adaptability improves, but device complexity increases
Solution Approach 1:
The NAN terminal in AP capability is designed with multi-functionality to operate in both WiFi mode and NAN mode. This universal design allows a single device to handle multiple communication paradigms, improving adaptability while managing complexity through integrated control mechanisms that can switch between modes based on operational requirements
Data Source
AI summary
A wireless resource scheduling method and device for NAN are disclosed. The wireless resource scheduling method for NAN can comprise the steps of: determining switching from a WiFi mode to a NAN mode by a NAN terminal of an AP function; when the NAN terminal of the AP function determines the switching to the NAN mode, transmitting a CTS-to-self frame on the WiFi mode by the NAN terminal of the AP function; switching from the WiFi mode to the NAN mode by the NAN terminal of the AP function; and transmitting, by the NAN terminal of the AP function, a NAN frame to a NAN terminal on the NAN mode, wherein the WiFi mode supports communication on the basis of a BSS and the NAN mode can support communication on the basis of a NAN cluster.