Transmitting data packets in multi-rat networks

摘要

In order to transmit data packets in multi-RAT networks, a method and a system of network controllers are proposed comprising:
simultaneous establishment of radio connections over multiple different Radio Access Technologies or RATs, with a User Equipment or UE 13, being one radio connection firstly established over one primary RAT under a single PDP context and one or more radio connections established over at least one secondary RAT, different from the primary RAT, and under the same single PDP context;simultaneous transmission of data packets over the different RATs towards the UE 13 and combination of the transmitted data by higher layer protocols at the UE 13. ;In the present method/system, a connection is established for user plane transmission on the same PDP context between a primary network controller 11 of the primary RAT and the secondary network controller 12 of a secondary RAT. More than one secondary RAT may be involved.

主权项

1. A method for transmitting data packets in a wireless telecommunication network having a common core network and supporting multiple Radio Access Technologies, the method comprising:
establishing simultaneous radio connections over a plurality of different Radio Access Technologies between a User Equipment and the common core network; transmitting data over the different Radio Access Technologies simultaneously between the User Equipment and the common core network; and combining all the transmitted data through a single PDP context at the same User Equipment, and wherein establishing the simultaneous radio connections comprises firstly establishing the single PDP context and a first radio connection over a primary Radio Access Technology, sending to the User Equipment a request for performing radio measurements on cells which are able to provide relevant service coverage over one or more secondary Radio Access Technologies that are different from the primary Radio Access Technology to the User Equipment, and establishing a corresponding second radio connection over each of at least one of the one or more secondary Radio Access Technologies and under the same PDP context as the first radio connection, and wherein the corresponding second radio connection over each secondary Radio Access Technology is established only if there is at least one cell for the secondary Radio Access Technology for which both a measured radio signal quality exceeds a minimum quality threshold and a measured load is below a maximum load threshold.