Mobile to mobile calls
First Claim
1. In a mobile radio telecommunications system, a method of providing switching between first and second mobile users (18, 19) within the same radio access network (14) characterised by supplying to the radio access network (14) information related to the connection between the first and second mobiles (18, 19), whereby the radio access network (14) identifies that the first and second mobiles (18, 19) are within the radio access network (14), and initiates local switching.
1 Assignment
0 Petitions
Accused Products
Abstract
In a call between mobiles 18, 19 located in the same UTRAN 24, and in which at least one mobile has an IMSI, a method of providing local switching in which the RNC 22 sends on an uplink from the first mobile 18 to the CN 10 information related to the first mobile, such as its IMSI, and stores at least a part of that information; when the RNC 22 receives the same information on a downlink from the CN 10 to the second mobile 19, it recognizes that the mobiles are within the same UTRAN 14 and performs local switching. Delay is reduced and the call can be charged at local rates. Instead of the IMSI, data frames from the first mobile 18 can be stored by the RNC 22 for comparison.
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Citations
17 Claims
- 1. In a mobile radio telecommunications system, a method of providing switching between first and second mobile users (18, 19) within the same radio access network (14) characterised by supplying to the radio access network (14) information related to the connection between the first and second mobiles (18, 19), whereby the radio access network (14) identifies that the first and second mobiles (18, 19) are within the radio access network (14), and initiates local switching.
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11. A component (22) for the radio access network of a mobile radio telecommunications system characterised by being arranged to receive information related to a connection between first and second mobile systems (18, 19) in the system;
- to identify whether the first and second mobile systems are within the same radio access network; and
, if so, to initiate local switching. - View Dependent Claims (12, 13, 14, 15, 16)
- to identify whether the first and second mobile systems are within the same radio access network; and
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17. A mobile switching centre in a Core Network (10) of a mobile radio telecommunications system characterised by being arranged to send to the originating and terminating legs of a connection between two mobile systems (18, 19) the International Mobile Switching Identifier of the mobile system in the other leg;
- and to inform the core network (10) when local switching by at least one radio access network component is possible.
Specification