Random access preamble selection

Details Random access preamble selection Random access preamble selection

2009-02-11

2011-11-29

Pham, Chi (Department: 2471)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S341000, C370S350000, C455S434000, C455S450000

Reexamination Certificate

active

08068458

ABSTRACT:
The present invention relates to methods for establishing a connection between a user equipment and a wireless network. More particularly, the present invention relates to methods for selecting a preamble based on its power back-off metric in order to randomly access a wireless network while avoiding collisions with other user equipments attempting to access the network at the same time.

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Fujitsu, “Maximum Power Reduction of RACH Preamble”, R4-081824, 3GPP TSG-RAN WG4 Meeting #48, Jeju, Korea, Aug. 18-22, 2008, 2 pages.
Fujitsu, “Maximum Power Reduction of RACH Preamble”, R4-081825, 3GPP TSG-RAN WG4 (Radio) Meeting #48, Jeju, Korea, Jun. 18-22, 2008, 2 pages.

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