FIELD: information technology.
SUBSTANCE: invention discloses systems and methods for switching between heterogeneous networks and inter-working between a source access system and a target access system. An inter-system handover control component can facilitate setting an IP tunnelling by the mobile unit, wherein IP addresses for inter-working security gateway and radio access network of the target access system can be identified. The inter-system handover control component can then implement tunnelling between the source system and the target system, wherein service signals/packets associated with the target system can be transferred over the source system.
EFFECT: providing efficient handover between access systems.
23 cl, 10 dwg
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