Fast timing acquisition in cell search
AssigneeQUALCOMM Incorporated
InventorsDario Fertonani, Aamod Dinkar Khandekar, Srikanth Gummadi, Peter John Black
Life of this patent
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Abstract
Timing acquisition may be performed without typical correlation computations by determining a power of a received signal at certain points in time and using the determined power to identify gaps in the received signal. By determining gaps in the received signal, frame timing may be estimated, particularly in time-division networks where the location of guard periods within a frame is known. Gap detection may thus be used for timing acquisition.
Claims17
A method of detecting frame timing in a wireless communication network, the method comprising:
- determining a set of received powers at different sequential portions of a frame;
- and
- detecting a gap in transmission based on a ratio of a minimum received power of a first and third of the sequential portions relative to a maximum received power of a second and fourth of the sequential portions, the first sequential portion, second sequential portion, third sequential portion, and fourth sequential portion being sequential in time.
A computer program product for detecting frame timing in a wireless communication network, the computer program product comprising:
- a non-transitory computer-readable medium having non-transitory program code recorded thereon, the program code comprising:
- program code to determine a set of received powers at different sequential portions of a frame;
- and
- program code to detect a gap in transmission based on a ratio of a minimum received power of a first and third of the sequential portions relative to a maximum received power of a second and fourth of the sequential portions, the first sequential portion, second sequential portion, third sequential portion, and fourth sequential portion being sequential in time.
An apparatus for detecting frame timing in a wireless communication network, the apparatus comprising:
- a memory;
- and
- at least one processor coupled to the memory, the at least one processor being configured:
- to determine a set of received powers at different sequential portions of a frame;
- and
- to detect a gap in transmission based on a ratio of a minimum received power of a first and third of the sequential portions relative to a maximum received power of a second and fourth of the sequential portions, the first sequential portion, second sequential portion, third sequential portion, and fourth sequential portion being sequential in time.
Dependencies are inferred from the claim text.