US 2010/0246533 A1 · Intersystem Change Involving Mapping Between Different Types Of Radio Bearers

Abstract

The present invention relates to a packet data core network node (10) supporting packet data communication in a first core network comprising first communication means (1) for control plane handling (11) and mobility management (12) and second communication means (2) for user plane management and means for communication with a dual mode mobile terminal over a first radio network. It comprises or communicates with a mapping function (3) for mapping between first radio bearers used in the first core and radio networks and second radio bearers of a type different from the type of the first radio bearers and used in a second core radio network at handover of a dual mode mobile terminal from the first core network to the second core network or vice versa. The invention also relates to a dual mode mobile terminal including such a mapping function.

Claims38

Dependent claims

A packet data core network node supporting packet data communication in a first core network comprising first communication means for control plane handling and mobility management and second communication means for user plane management and means for communication with a dual mode mobile terminal over a first radio network,

characterized in
that it comprises or communicates with a mapping function for mapping between first radio bearers used in the first core network and second radio bearers of a type different from the type of the first radio bearers and used in a second core network at handovers of dual mode mobile terminals from the first core network to the second core network or vice versa.

A method for performing a handover or an intersystem change for a dual mobile terminal supporting communication with a first packet data core network node in a first core network and with a second core network node in a second core network, said first and second core networks implementing first and second radio bearers respectively which are of different types,

characterized in
that it comprises the steps of:
establishing in a first or second core network node that a handover should be done from the first core network to the second core network or vice versa;
activating a mapping function provided in the first or second core network node having made the establishment;
performing a mapping of bearers used in the first or second core network from which the handover is to be done to bearers in the second or first core network to which the handover is to be done;
identifying in the first or second core network node, to which a handover is to be done, which of the mapped bearers that are or can be activated;
providing the second or first core network node from which a handover is to be done, and the mobile terminal, with information about the identities of the activated bearers;
completing the handover and using the mapped bearers.

5 more elements

Dependencies are inferred from the claim text.

Intersystem Change Involving Mapping Between Different Types Of Radio Bearers

Life of this patent

Intersystem Change Involving Mapping Between Different Types Of Radio Bearers

Life of this patent

Abstract

Claims38