Configuring relations between cells in different radio access networks

A method to configure relations between Evolved Universal Terrestrial Radio Access Network (E-UTRAN) cells and Generic Access Network (GAN) cells in a generic access node controller (GANC) in a Circuit Switched Services over Long Term Evolution via Generic Access Network (CSoLTEvGAN) architecture, said method comprising:

• receiving, in a signaling message, cell identification information for an E-UTRAN cell from a mobile terminal;
• determining cell identification information for a GAN cell by translating at least one portion of the cell identification information for the E-UTRAN cell to at least one portion of the cell identification information for the GAN cell;
• creating an entry within a translation table the to map cell identification information for the E-UTRAN cell to the determined cell identification information for the GAN cell, or to map the determined cell identification information for the GAN cell to the cell identification for the E-UTRAN cell;
• copying the values of a Mobile Country Code (MCC) and a Mobile Network Code (MNC) in the cell identification information for the E-UTRAN cell to the values of a MCC and MNC in the cell identification information for the GAN cell;
• copying the value an E-UTRAN Tracking Area Code (TAC) to the Location Area Code (LAC) in the cell identification information for the GAN cell;
• and
• mapping the 16 least significant bits of the E-UTRAN Cell Identifier (ECI) to a Cell Identity/Service Area Code (Cl/SAC) in the cell identification information for the GAN cell.

A Generic Access Node Controller (GANC) in a Circuit Switched Services over Long Term Evolution using Generic Access Network (CSoLTEvGAN) architecture comprising:

• a processor;
• a translation table;
• and
• at least one signaling interface coupled to the processor and adapted to communicate with a core network and a mobile terminal in an Evolved Universal Terrestrial Radio Access Network (E-UTRAN);
• wherein the processor is configured to:
• receive, via the at least one signaling interface, cell identification information for an E-UTRAN cell in a signaling message from the mobile terminal;
• determine cell identification information for a Generic Access Network (GAN) cell by translating at least one portion of the cell identification information for the E-UTRAN cell to at least one portion of the cell identification information for the GAN cell;
• create an entry within the translation table so that the cell identification information for the E-UTRAN cell maps to the cell identification information for the GAN cell, or so that the cell identification information for the GAN cell maps to the cell identification information for the E-UTRAN cell;
• copy the values of a Mobile Country Code (MCC) and a Mobile Network Code (MNC) in the cell identification information for the E-UTRAN cell to the values of an MCC and MNC in the cell identification information for the GAN cell;
• copy the 12 most significant bits of an E-UTRAN Cell Identifier (ECI) are copied to the 12 least significant bits of a Location Area Code (LAC) in the cell identification information for the GAN cell;
• and
• copy the 16 least significant bits of the ECI to a Cell Identity/Service Area Code (CI/SAC) in the cell identification information for the GAN cell.

A Generic Access Node Controller (GANC) in a Circuit Switched Services over Long Term Evolution using Generic Access Network (CSoLTEvGAN) architecture comprising:

• a processor;
• a translation table;
• and
• at least one signaling interface coupled to the processor and adapted to communicate with a core network and a mobile terminal in an Evolved Universal Terrestrial Radio Access Network (E-UTRAN);
• wherein the processor is configured to:
• receive, via the at least one signaling interface, cell identification information for an E-UTRAN cell in a signaling message from the mobile terminal;
• determine cell identification information for a Generic Access Network (GAN) cell by translating at least one portion of the cell identification information for the E-UTRAN cell to at least one portion of the cell identification information for the GAN cell;
• create an entry within the translation table so that the cell identification information for the E-UTRAN cell maps to the cell identification information for the GAN cell, or so that the cell identification information for the GAN cell maps to the cell identification information for the E-UTRAN cell;
• copy the values of a Mobile Country Code (MCC) and a Mobile Network Code (MNC) in the cell identification information for the E-UTRAN cell to the values of a MCC and MNC in the cell identification information for the GAN cell;
• copy the value an E-UTRAN Tracking Area Code (TAC) to the Location Area Code (LAC) in the cell identification information for the GAN cell;
• and
• map the 16 least significant bits of the E-UTRAN Cell Identifier (ECI) to a Cell Identity/Service Area Code (CI/SAC) in the cell identification information for the GAN cell.