Method and device for selecting anchor masters

Abstract

The embodiment of the invention discloses a method and device for selecting anchor masters. Time synchronization of equipment in an NAN (Neighbor Awareness Networking) cluster can be kept. The method for selecting anchor masters comprises the steps that the equipment receives NAN Beacon frames carrying first AM (Anchor Master) information and first TSF (Time Synchronization Function) information, and the first AM information comprises the first AMR (Anchor Master Rank), the first HC and the first AMBTT (Anchor Master Beacon Transmission Time); if the NAN Beacon frames are used for selecting AMs, when the first AMR is smaller than the second AMR and the MR (Master Rank) of the device is greater than the first AMR, the role of the equipment is converted into the AMs, second AM information of an equipment record comprises the second AMR, the second HC and the second AMBTT; if the NAN Beacon frames are used for selecting the AMs, when the first AMR is smaller than the second AMR and the MR of the equipment is smaller than the first AMR, the equipment updates the second AM information and second TSF information of the equipment record according to the NAN Beacon frames.

Description

technical field [0001] The present invention relates to the technical field of communications, and in particular to a method and device for selecting an anchor master device. Background technique [0002] With the advent of the mobile Internet era, social networking, localization, and mobile have become the mainstream models of the Internet industry. Especially with the popularity of mobile devices equipped with wireless-fidelity (Wireless-Fidelity, Wi-Fi) interfaces, the social application of devices in Neighbor Awareness Networking (NAN) is becoming a hotspot in the industry. [0003] A NAN network composed of multiple NAN devices is called a NAN cluster (Cluster). Devices in the same NAN cluster have the same cluster ID, and each device has its own attributes, including: role (Role) and state (State). Role includes master and non-master, and state includes sync and non-sync. The device in the Sync state is responsible for maintaining cluster synchronization. The Master ...

AI Technical Summary

Problems solved by technology

According to the existing specification, when the HC in the received Sync Beacon frame exceeds the threshold, the device will discard the Sync Beacon frame. When HC exceeds the threshold, all received Sync Beacon frames will be discarded. At the same time, AM will be lost in the NAN cluster, resulting in the collapse of the entire NAN cluster, making it impossible to achieve time synchronization between devices.

Images