Navigation method, device for navigation and navigation system

A first terminal for navigation, comprising:

• a location-sharing request module configured to transmit to the second terminal a location-sharing request for sharing locations with the second terminal;
• a locating module configured to perform a location processing to obtain a location of the first terminal and share its location with the second terminal;
• a navigation module configured to transmit a request to a server to request that the server sends navigation information from the location of the second terminal to a target location to the second terminal so as to navigate the second terminal, the target location being a predetermined location or a current location of the first terminal,
• wherein the navigation module comprises a second navigation unit configured to transmit to the server the request together with route information from the location of the second terminal to the target location which route information is drawn by the user of the first terminal so that the server generates corresponding navigation information based on the route information and sends the generated navigation information to the second terminal to perform a navigation processing,
• wherein the navigation module is further configured to transmit to the server a first route information from the location of the second terminal to a third location and a second route information from a fourth location to the target location, wherein the first route information and the second route information are drawn by the user of the first terminal;
• to instruct the server to generate a third navigation information from the third location to the fourth location;
• and
• to cause the server to generate navigation information based on the first route information, the second route information and the third navigation information and send the generated navigation information to the second terminal to perform a navigation processing, the third location and the fourth location being any locations from the location of the second terminal to the target location and different from each other.

A server for navigation, comprising:

• a location-sharing triggering module configured to receive from the first terminal a location-sharing request for sharing locations with the second terminal, the location-sharing request including a number and a specified identification of the second terminal, the location-sharing triggering module acquiring a number of the first terminal based on the specified identification and transmitting the number of the first terminal and the location-sharing request together to the second terminal so as to trigger the location sharing between the first terminal and the second terminal;
• an acquiring module configured to, based on a navigation request from the first terminal, acquire navigation information from the location of a second terminal to a target location, the target location being a predetermined location or the location of a first terminal;
• and
• a transmitting module configured to transmit the navigation information acquired by the acquiring module to the second terminal to perform a navigation processing,
• wherein the acquiring module comprises a second acquiring unit configured to receive from the first terminal route information from the location of the second terminal to the target location which route information is drawn by the user and generate navigation information based on the route information,
• wherein the acquiring module is further configured to receive from the first terminal a first route information from the location of the second terminal to a third location and a second route information from the fourth location to the target location, wherein the first route information and the second route information are drawn by the user of the first terminal,
• to receive from the first terminal a request for generating a third navigation information from the third location to the fourth location so as to generate the third navigation information, and
• to generate navigation information based on the first route information, the second route information and the third navigation information, the third location and the fourth location respectively being any one location from the location of the second terminal to the target location and different from each other.