A method by a network node of a packet core network of performing handover of a mobile terminal between a first non-3rd Generation Partnership Project, 3GPP, Radio Access Technology, RAT, and a second 3GPP RAT in a wireless communications system, said network node being a Packet Data Network Gateway, PGW, in a Long Term Evolution, LTE, network, the method comprising: establishing a Packet Data Network, PDN, connection with the mobile terminal via the first RAT; receiving a request for handover of the mobile terminal to the second RAT; performing handover of the mobile terminal to the second RAT; maintaining PDN connection context for said PDN connection established via the first RAT for a time period; releasing the PDN connection context at expiry of said time period; the method being characterized in comprising: establishing a PDN connection with the mobile terminal via the second RAT; receiving a request for handover of the mobile terminal to the first RAT; determining whether the PDN connection context for said PDN connection established via the first RAT is still maintained; and if so; performing handover of the mobile terminal to the first RAT without performing update location with a Home Subscriber Server, HSS, and without creating a session with a Serving Gateway, SGW; wherein the maintaining of the PDN connection context with the first RAT for a time period comprises a Mobility Management Entity, MME, or a Serving General Packet Radio Service Support Node, SGSN, the SGW and the PGW interacting in maintaining the PDN connection context for said PDN connection established via the first RAT by exchanging (S408-S412) delete bearer messages indicating handover from the first RAT to the second RAT, thereby storing the PDN context of the established PDN connection, wherein Delete Bearer Responses include a support fast handover extension Information Element, IE, and wherein the SGW and the PGW are made aware of the request for handover from the second RAT to the first RAT by receiving a modify bearer request indicating the handover. establishing a Packet Data Network, PDN, connection with the mobile terminal via the first RAT; receiving a request for handover of the mobile terminal to the second RAT; performing handover of the mobile terminal to the second RAT; maintaining PDN connection context for said PDN connection established via the first RAT for a time period; releasing the PDN connection context at expiry of said time period; the method being characterized in comprising: establishing a PDN connection with the mobile terminal via the second RAT; receiving a request for handover of the mobile terminal to the first RAT; determining whether the PDN connection context for said PDN connection established via the first RAT is still maintained; and if so; performing handover of the mobile terminal to the first RAT without performing update location with a Home Subscriber Server, HSS, and without creating a session with a Serving Gateway, SGW; wherein the maintaining of the PDN connection context with the first RAT for a time period comprises a Mobility Management Entity, MME, or a Serving General Packet Radio Service Support Node, SGSN, the SGW and the PGW interacting in maintaining the PDN connection context for said PDN connection established via the first RAT by exchanging (S408-S412) delete bearer messages indicating handover from the first RAT to the second RAT, thereby storing the PDN context of the established PDN connection, wherein Delete Bearer Responses include a support fast handover extension Information Element, IE, and wherein the SGW and the PGW are made aware of the request for handover from the second RAT to the first RAT by receiving a modify bearer request indicating the handover. establishing a PDN connection with the mobile terminal via the second RAT; receiving a request for handover of the mobile terminal to the first RAT; determining whether the PDN connection context for said PDN connection established via the first RAT is still maintained; and if so; performing handover of the mobile terminal to the first RAT without performing update location with a Home Subscriber Server, HSS, and without creating a session with a Serving Gateway, SGW; wherein the maintaining of the PDN connection context with the first RAT for a time period comprises a Mobility Management Entity, MME, or a Serving General Packet Radio Service Support Node, SGSN, the SGW and the PGW interacting in maintaining the PDN connection context for said PDN connection established via the first RAT by exchanging (S408-S412) delete bearer messages indicating handover from the first RAT to the second RAT, thereby storing the PDN context of the established PDN connection, wherein Delete Bearer Responses include a support fast handover extension Information Element, IE, and wherein the SGW and the PGW are made aware of the request for handover from the second RAT to the first RAT by receiving a modify bearer request indicating the handover.