A Method of Cell Reselection in a Wireless TelecommunicationsDevice Operative with a Plurality of Radio Access Networks

A method of cell reselection in a wireless telecommunications device operative with a plurality of radio access networks, the method comprising:

• when the device is camped on a cell of a first radio access network
• (1a) evaluating a cell in a neighbor cell list of the first radio access network for reselection from the cell of the first radio access network, the cell in the neighbor cell list being of a second radio access network;
• (1b) if as a result of operation (1a) the cell of the second radio access network would be reselected, evaluating for reselection cells in a neighbor cell list of the cell of the second radio access network;
• and
• (2) if as a result of operation (1b) a cell of the first radio access network would not be reselected, then performing reselection to the cell of the second radio access network.

A wireless telecommunications device operative with a plurality of radio access networks, the wireless telecommunications device being arranged, in use, to:

• when the device is camped on a cell of a first radio access network
• (1) evaluate for cell reselection a cell in a neighbor cell list of the first radio access network, the cell in the neighbor cell list being of a second radio access network;
• and
• (2) if the evaluation in operation (1) would result in reselection from the cell of the second radio access network back to a cell of the first radio access network, evaluate for cell reselection another cell in the neighbor cell list of the first radio access network.

A wireless telecommunications device operative with a plurality of radio access networks, the wireless telecommunications device being arranged, in use, when the device is camped on a cell of a first radio access network to:

• (1a) evaluate a cell in a neighbor cell list of the first radio access network for reselection from the cell of the first radio access network, the cell in the neighbor cell list being of a second radio access network;
• (1b) if as a result of operation (1a) the cell of the second radio access network would be reselected, evaluate for reselection cells in a neighbor cell list of the cell of the second radio access network;
• and
• (2) if as a result of operation (1b) a cell of the first radio access network would not be reselected, then perform reselection to the cell of the second radio access network.