Method for establishing communications between peer devices, wireless communication device using the same and computer-readable medium

Abstract

A method for establishing a communication between a first peer device and a second peer device is provided. The method includes detecting the second peer device by the first peer device. The method also includes checking, by the first peer device, whether there is a deposited second address of the second peer device in an address database of the first peer device. The method further includes setting a role for the first peer device by the first peer device according to a first address and a second address when there is the deposited second address of the second peer device in the address database of the first peer device. The method further includes establishing a connection between the first peer device and the second peer device based on the role set for the the first peer device.

What is claimed is: 
     
         1 . A method for establishing a communication between a first peer device having a first address and a second peer device having a second address, the method comprising:
 detecting the second peer device by the first peer device;   checking, by the first peer device, whether there is a deposited second address of the second peer device in an address database of the first peer device;   setting a role for the first peer device by the first peer device according to the first address and the second address when there is the deposited second address of the second peer device in the address database of the first peer device; and   establishing a connection between the first peer device and the second peer device based on the role set for first peer device.   
     
     
         2 . The method as claimed in  claim 1 , wherein the step of setting the role for the first peer device by the first peer device according to the first address and the second address comprises:
 comparing the first address and the second address based on a value of the first address and a value of the second address; and   designating the first peer device as a master role if the value of the first address is larger than the value of the second address.   
     
     
         3 . The method as claimed in  claim 1 , wherein the step of setting the role for the first peer device by the first peer device according to the first address and the second address comprises:
 comparing the first address and the second address based on a value of the first address and a value of the second address; and   designating the first peer device as a slave role if the value of the first address is larger than the value of the second address.   
     
     
         4 . The method as claimed in  claim 1 , further comprising:
 when there is no deposited second address of the second peer device in the address database of the first peer device, setting a role switching time for the first peer device based on the first address, performing a pairing operation between the first peer device and the second peer device with the role switching time to establish the connection between the first peer device and the second peer device, and after the connection is established, storing the second address into the address database of the first peer device.   
     
     
         5 . The method as claimed in  claim 4 , further comprising:
 setting the role switching time for the first peer device based on the first address when a button coupled to the first peer device is driven.   
     
     
         6 . An wireless communication device for establishing a communication with a peer device, wherein the wireless communication device has a first address, and the peer device has a second address, the wireless communication device comprising:
 a wireless transceiver, configured to detect the peer device;   a storage unit, configured to store an address database; and   a reconnecting circuit, coupled to the wireless transceiver and the storage unit, and configured to check whether there is a deposited second address of the peer device in an address database of the wireless communication device,   wherein when there is the deposited second address of the peer device in the address database of the wireless communication device, the reconnecting circuit designates a role for the wireless communication device according to the first address and the second address,   wherein the reconnecting circuit establishes a connection between the wireless communication device and the peer device based on the role set for the wireless communication device.   
     
     
         7 . The wireless communication device as claimed in  claim 6 , wherein the reconnecting circuit compares the first address and the second address based on a value of the first address and a value of the second address,
 the reconnecting circuit designates the wireless communication device as a master role if the value of the first address is larger than the value of the second address.   
     
     
         8 . The wireless communication device as claimed in  claim 6 , wherein the reconnecting circuit compares the first address and the second address based on a value of the first address and a value of the second address,
 the reconnecting circuit designates the wireless communication device as a slave role if the value of the first address is larger than the value of the second address.   
     
     
         9 . The wireless communication device as claimed in  claim 6 , further comprising:
 a pairing circuit, coupled to the reconnecting circuit,   wherein when there is no deposited second address of the second peer device in the address database of the wireless communication device, the pairing circuit is configured to set a role switching time for the wireless communication device based on the first address, wherein the pairing circuit performs a pairing operation between the wireless communication device and the peer device with the role switching time to establish the connection between the wireless communication device and the peer device, and after the connection is established, the pairing circuit stores the second address into the address database.