Wi-Fi NAN Cluster Proximity Data Transmission
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Solution Overview
Problem
Current proximity services using low-power communication methods, such as Bluetooth Low Energy (BLE), are limited in capacity, restricting data transmission to small-sized information like images, text, and URLs, and face efficiency issues when transmitting high-capacity data to multiple devices simultaneously.
Innovation Solution
An electronic device equipped with a Wi-Fi transceiver and processor synchronizes with other devices in a Neighbor Awareness Networking (NAN) cluster to transmit high-capacity data by using first data with channel and time information to guide the reception of second data, enabling efficient multicasting and selective service provision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If low-power communication methods like BLE are used for proximity services, then power consumption is reduced, but data transmission capacity is limited to small-sized data only
Solution Approach 1:
The patent segments data transmission into two phases: first transmitting small-sized guide information (channel number, time information, data type) through low-power BLE proximity service, then transmitting high-capacity actual data through Wi-Fi. This segmentation allows the system to benefit from both low-power communication and high-capacity data transmission.
2Adaptability or versatility
If simultaneous connection and data transmission is performed for multiple receiving devices, then service coverage is expanded, but transmission efficiency and network efficiency deteriorate
Solution Approach 1:
The transmitting device performs preliminary actions by first transmitting guide information (channel number, time information, data type) to multiple receiving devices before actual data transmission. This allows receiving devices to prepare their communication channels in advance, enabling efficient simultaneous data transmission to multiple devices without connection overhead at the moment of data transfer.
Data Source
AI summary
An electronic device in a neighbor awareness networking (NAN) cluster is provided. The electronic device includes a wireless fidelity (Wi-Fi) transceiver; and a processor, coupled with the Wi-Fi transceiver, configured to perform a synchronization with at least one device in the NAN cluster, wherein the at least one device comprises an external electronic device, after performing the synchronization, receive, from the external electronic device through the Wi-Fi transceiver, a frame including first data within at least one discovery window (DW) among a plurality of DWs, wherein the first data comprises channel information for second data, and time information for the second data, and based on the channel information and the time information, control the Wi-Fi transceiver to receive the second data at a channel corresponding to the channel information of the received first data during a time duration corresponding to the time information of the received first data.