Location aided cell search
First Claim
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1. A method comprising:
- determining positions of a wireless transmit/receive unit (WTRU) over time;
using the determined positions, determining a movement direction of the WTRU;
based on a current position of the determined positions and the movement direction of the WTRU, identifying at least one cell that the WTRU is approaching;
sending information to the WTRU for the identified at least one cell; and
using the information for the identified at least one cell to simplify cell search.
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Abstract
Positions of a wireless transmit/receive unit (WTRU) are determined over time. The determined positions are used to determine a movement direction of the WTRU. Based on a current position of the determined positions and the movement direction of the WTRU, at least one cell that the WTRU is approaching is identified. Information is sent to the WTRU for the identified at least one cell. The information for the identified at least one cell is used to reduce the complexity of cell search.
17 Citations
27 Claims
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1. A method comprising:
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determining positions of a wireless transmit/receive unit (WTRU) over time;
using the determined positions, determining a movement direction of the WTRU;
based on a current position of the determined positions and the movement direction of the WTRU, identifying at least one cell that the WTRU is approaching;
sending information to the WTRU for the identified at least one cell; and
using the information for the identified at least one cell to simplify cell search. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 16, 17, 18)
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12. A base station comprising:
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a transceiver for receiving determined positions of a wireless transmit/receive unit (WTRU) over time;
a cell reselection device for using the determined positions to determine a movement direction of the WTRU;
for based on a current position of the determined positions and the movement direction of the WTRU, identifying at least one cell that the WTRU is approaching; and
the transceiver for sending information to the WTRU for the identified at least one cell. - View Dependent Claims (13, 14, 15, 19, 20, 21, 22, 27)
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23. A wireless transmit/receive unit (WTRU) comprising:
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a positioning device for determining positions of the WTRU over time;
a transceiver for transmitting the determined positions and for receiving information for at least one cell identified that the WTRU is moving towards; and
a controller for using the information for the identified at least one cell to simplify cell search performed by a cell search device. - View Dependent Claims (24, 25, 26)
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Specification