Method and nodes for routing a call in a mobile telecommunication network
AssigneeNokia Corporation
InventorSerge Haumont
Life of this patent
Estimating the term…
Abstract
The advantages of optimal routing are somewhat limited by the tariff requirements requiring that optimal routing must not cause the call to be more expensive to any of the subscribers participating in the call. If the bills of both the calling and the called subscriber are paid by the same company, for example, it is in the interest of the company to minimize the total cost of the call, i.e. the sum of the bills of subscribers A and B. In this invention a condition for bypassing the tariff requirement for direct routing is specified. The calls can be routed directly, for example, within a prespecified user group.
Claims25
A method of routing calls in a mobile telecommunication network comprising mobile stations and mobile switching centers, in which network
- connections can be established between the mobile stations and the mobile switching centers,
- the mobile switching centers can establish connections with network elements outside the mobile telecommunication network,
- mobile subscribers can roam outside their own home network,
- subscriber information including the location of the mobile subscribers is maintained, and
- calls are routed directly from a calling mobile subscriber to a roaming mobile subscriber, using a direct route not passing through the home network of the called mobile subscriber, if a tariff requirement is met,
- the method comprising steps, where
- a call is specified to be routed directly even if the tariff requirement is not met,
- in the call establishment procedure, a check is made as to whether the call has been specified to be routed directly even if the tariff requirement is not met, and if the specification has been made, the call is routed directly to the called mobile subscriber.
A home location register for a mobile telecommunication network comprising mobile stations, mobile switching centers, and at least one home location register, in which network
- connections can be established between the mobile stations and the mobile switching centers,
- the mobile switching centers can establish connections with network elements outside the mobile telecommunication network,
- mobile subscribers can roam outside their own home network,
- subscriber information including the location of a mobile subscriber is maintained and stored in the home location register of the subscriber,
- when establishing a connection to a called subscriber, the mobile switching center queries the home location register of the called subscriber for roaming information, and
- calls are routed from a calling mobile subscriber to a roaming mobile subscriber using a direct route which need not pass through the home network of the called mobile subscriber if a tariff requirement is met,
- the home location register being arranged, in response to the query received, to check whether a call is specified to be routed directly even if the tariff requirement is not met, and, if the call is specified to be routed directly even if the tariff requirement is not met,
- to return the mobile switching center routing information for a direct route.
A mobile switching center for a mobile telecommunication network comprising mobile subscribers and their mobile stations, mobile switching centers, and at least one home location register, in which network
- connections can be established between the mobile stations and the mobile switching centers,
- the mobile switching centers can establish connections with network elements outside the mobile telecommunication network,
- mobile subscribers can roam outside their own home network,
- subscriber information including the location of a mobile subscriber is maintained and stored in the home location register of the subscriber,
- when establishing a connection to a called subscriber, the mobile switching center queries the home location register of the called subscriber for roaming information, and
- calls are routed from a calling mobile subscriber to a roaming subscriber using a direct route which need not pass through the home network of the called subscriber if a tariff requirement is met,
- the mobile switching center being arranged
- to receive a request for routing a call directly even if the tariff requirement is not met and
- to forward the request to the home location register of the called subscriber.
A service control point for an intelligent network connected to a mobile telecommunication network comprising mobile stations, mobile switching centers and at least one home location register, in which network
- connections can be established between the mobile stations and the mobile switching centers,
- the mobile switching center queries the home location register of the called subscriber for roaming information when establishing a connection to a called subscriber,
- the mobile switching centers can establish connections with network elements outside the mobile telecommunication network,
- mobile subscribers can roam outside their own home network,
- subscriber information including knowledge of the location of a mobile subscriber is maintained, and
- calls are routed from a calling mobile subscriber to a roaming mobile subscriber using a direct route which need not pass through the home network of the subscriber if a tariff requirement is met,
- the service control point being arranged, in response to receiving a query from a mobile switching center for instructions concerning a call,
- to check the subscriber information of the calling subscriber to see whether the call is specified to be routed directly even if the tariff requirement is not met, and
- to indicate the request to the mobile switching center.
A service control point for an intelligent network connected to a mobile telecommunication network comprising mobile stations, mobile switching centers and at least one home location register, in which network
- connections can be established between the mobile stations and the mobile switching centers,
- the mobile switching centers can establish connections with network elements outside the mobile telecommunication network,
- mobile subscribers can roam outside their own home network,
- subscriber information including knowledge of the location of the mobile subscribers is maintained and stored in the home location register of the subscriber,
- when establishing a connection to a called subscriber, the mobile switching center queries the home location register of the called subscriber for roaming information, and
- calls are routed to from a calling mobile subscriber to a roaming mobile subscriber using a direct route which need not pass through the home network of the subscriber if a tariff requirement is met,
- the service control point being arranged, in response to a query for instructions concerning a call,
- to check the subscriber information of the calling subscriber to see whether the call is specified to be routed directly even if the tariff requirement is not met and
- to indicate the request to the home location register of the called subscriber.
Dependencies are inferred from the claim text.