METHODS AND APPARATUS FOR CELL SELECTION/RESELECTION OF A MOBILE TERIMINAL FROM A LEGACY NETWORK TO AN ADVANCED NETWORK
First Claim
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1. A method for creating a mapping table in an advanced network by a terminal, comprising:
- receiving information from a Base Station (BS) of the advanced network;
storing a cell IDentification (ID) of each of a legacy network and the advanced network, using the information;
creating the mapping table between the legacy network and the advanced network using the cell IDs.
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Abstract
Methods and apparatus are provided for performing a cell selection by a multi-mode terminal from a legacy network (2G, 3G) to a advanced network (4G). The terminal performs the cell selection upon the existence of a Base Station (BS) on the advanced network system. The terminal does not attempt to perform the cell selection when the LTE BS does not exist.
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Citations
22 Claims
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1. A method for creating a mapping table in an advanced network by a terminal, comprising:
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receiving information from a Base Station (BS) of the advanced network; storing a cell IDentification (ID) of each of a legacy network and the advanced network, using the information; creating the mapping table between the legacy network and the advanced network using the cell IDs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for performing cell reselection from a legacy network to an advanced network by a terminal, comprising:
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pre-storing, in the terminal, a cell IDentification (ID) of each of the legacy network and the advanced network in a mapping table; connecting to the advanced network using the pre-stored cell identifications; receiving information of the legacy network or the advanced network; and updating the mapping table using the information. - View Dependent Claims (10, 11)
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12. A system for cell selection, comprising:
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a terminal for transmitting a report including a first cell IDentification (ID) of a neighbor cell; and a Base Station (BS) for receiving the first cell ID and transmitting a command message for obtaining a second cell ID of the neighbor cell, wherein the terminal receives the command message, obtains the second cell ID and stores the second cell ID in a mapping table, for cell selection. - View Dependent Claims (13, 14)
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15. A method for cell reselection from a legacy network to an advanced network, comprising:
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performing registration with the legacy network; entering an idle state, when a received signal from the legacy network is less than a threshold; accessing a cell IDentification (ID) of the legacy network and the advanced network from a mapping table; and performing the cell reselection from the legacy network to the advanced network, when the received signal of the advanced network is greater than a threshold. - View Dependent Claims (16, 17)
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18. An apparatus for cell reselection, comprising:
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a receiver for receiving a location of a Base Station (BS); and a controller for determining a distance from the location of the BS to a location of a terminal and performing the cell reselection when the distance is less than a predefined threshold. - View Dependent Claims (19, 20, 21, 22)
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Specification