Method and a system for minimizing roaming cost in a mobile communication network

Abstract

The present invention deals with a method and system for routing a call in a mobile communication network. The method comprises receiving a message by a caller prevailing network corresponding to a caller from a callee home network corresponding to a callee, if the callee is roaming. The message is received in response to the call being initiated by the caller for the callee. The message can comprise a redirection information corresponding to the callee in roaming. The method further comprises solving a predefined criterion for routing the call based on the redirection information in the message and connecting the call based on solution of the predefined criterion.

1 . A method for routing a call in a mobile communication network, the method comprising:
 receiving a message by a caller prevailing network corresponding to a caller from a callee home network corresponding to a callee, if the callee is roaming, wherein the message is received in response to the call initiated by the caller for the callee, wherein the message comprises a redirection information corresponding to the callee in roaming;   solving a predefined criterion for routing the call, wherein the predefined criterion is solved based on the redirection information in the message; and   connecting the call based on solution of the predefined criterion.   
   
   
       2 . The method of  claim 1  further comprising initiating the call by the caller for the callee. 
   
   
       3 . The method of  claim 1 , wherein the predefined criterion comprises comparing a first cost and a second cost, wherein the first cost corresponds to routing the call to a callee visited network of the callee from the caller prevailing network based on the redirection information in the message, the second cost corresponds to routing the call to the callee visited network from the caller prevailing network through the callee home network. 
   
   
       4 . The method of  claim 3 , wherein the call is directly connected to the callee, if the first cost is less than the second cost, wherein the call is routed to the callee visited network from the caller prevailing network based on the redirection information in the message. 
   
   
       5 . The method of  claim 4 , wherein the redirection information comprises a temporary number corresponding to the callee, the temporary number is assigned to the callee by the callee visited network, wherein the call is directly connected using the temporary number. 
   
   
       6 . The method of  claim 4 , wherein the redirection information comprises an address of a Mobile Switch Centre (MSC) of the callee visited network, the call is routed to the callee visited network based on the address of the MSC. 
   
   
       7 . The method of  claim 3 , wherein the call is connected to the callee by routing the call to the callee visited network from the caller prevailing network through the callee home network, if the second cost is less than the first cost. 
   
   
       8 . The method of  claim 3 , wherein the solving step comprises providing at least one of a first-routing-option and a second-routing-option to the caller, the first-routing-option corresponding to the first cost, the second-routing-option corresponding to the second cost. 
   
   
       9 . The method of  claim 8 , wherein the predefined criterion comprises the caller selecting one of a first-routing-option and a second-routing-option. 
   
   
       10 . The method of  claim 1 , wherein connecting the call comprise alerting the callee that the call is direct to the callee visited network from the caller prevailing network. 
   
   
       11 . The method of  claim 10 , wherein the callee is alerted by flashing an alert message on an electronic device used by the callee to receive the call. 
   
   
       12 . A method for minimizing cost of a call in roaming in a mobile communication network, the method comprising:
 receiving a message by a caller prevailing network corresponding to a caller from a callee home network corresponding to a callee, if the callee is roaming, wherein the message is received in response to the call initiated by the caller for the callee, wherein the message comprises redirection information corresponding to the callee in roaming;   calculating a first cost and a second cost, wherein the first cost corresponds to routing the call to the callee visited network from the caller prevailing network based on the information in the message, the second cost corresponds to routing the call to the callee visited network from the caller prevailing network through the callee home network;   comparing the first cost with the second cost; and   connecting the call based on comparison of the first cost and the second cost.   
   
   
       13 . A system for routing a call in a mobile communication network, the system comprising:
 a messaging sub-module, wherein the messaging sub-module sends a message from a callee home network corresponding to the callee, if the callee is roaming, the message is sent in response to the call initiated by a caller, wherein the message comprises redirection information corresponding to the callee in roaming; and   a routing-rule module, wherein the routing-rule module solves a predefined criterion for routing the call, the predefined criterion is solved based on the redirection information in the message.   
   
   
       14 . The system of  claim 13 , wherein the predefined criterion comprises comparing a first cost and a second cost, wherein the first cost corresponds to routing the call to a callee visited network from a caller prevailing network corresponding to the caller based on the redirection information in the message, the second cost corresponds to routing the call to the callee visited network from the caller home network through the callee home network. 
   
   
       15 . The system of  claim 14 , wherein the call is connected directly to the callee, if the first cost is less than the second cost, wherein the call is routed to the callee visited network from the caller prevailing network based on the redirection information in the message. 
   
   
       16 . The system of  claim 14 , wherein the call is connected to the callee by routing the call to the callee visited network from the caller prevailing network through the callee home network, if the second cost is less than the first cost. 
   
   
       17 . The system of  claim 14 , wherein the routing-rule module comprises an option-providing module, the option-providing module configured for:
 providing at least one of a first-routing-option and a second-routing-option to the caller, the first-routing-option corresponding to the first cost, the second-routing-option corresponding to the second cost.   
   
   
       18 . The system of  claim 17 , wherein the predefined criterion comprises the caller selecting one of a first-routing-option and a second-routing-option. 
   
   
       19 . The system of  claim 13  comprising:
 an alerting module, wherein the alerting module alerting the callee if the call is routed to the callee visited network from the caller prevailing network based on the redirection information in the message.