Abstract
A CDMA radio receiving apparatus which receives a slot which has a long code group identification short code at a point where a long code is masked. The apparatus includes a detector that detects a phase of the long code in association with a pattern that appears over successive slots and comprises the long code group identification short code. The apparatus also includes a correlator that performs correlation processing in association with the phase detected by the detector to identify the long code.
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| 3G | 08/12/2005 | ISLD-200601-003 | PANASONIC CORP | No | Family Member | ||||
Specification Information
Specification Information
Technologies
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| US6370134B1 | 3G | 08/12/2005 | ISLD-200601-003 | PANASONIC CORP | Yes | Basis Patent | ||||
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Technologies
Power Control
Product
Use Cases
Wireless communication
Services
Claim
1. A radio communication terminal apparatus comprising:
a first correlation system that calculates a correlation between a received signal having a plurality of slots and a short code common to all base stations to obtain first correlation values;
a detecting system that detects a maximum value of the obtained first correlation values to detect a slot timing;
a second correlation system that calculates a correlation between the received signal and each of a plurality of candidates for a long code group identification short code to obtain second correlation values in association with the detected slot timing;
an acquiring system that obtains a long code group in association with the long code group identification short code with a maximum value of the obtained second correlation values, while detecting a beginning position of a long code in association with a pattern of the obtained second correlation values to detect a frame timing;
a third correlation system that calculates a correlation between the received signal and each of long codes belonging to the obtained long code group in association with the detected frame timing to obtain third correlation values; and
an identification system that identifies a long code used by a base station that transmits the received signal, in association with the obtained third correlation values.', 'a first correlation system that calculates a correlation between a received signal having a plurality of slots and a short code common to all base stations to obtain first correlation values;', 'a detecting system that detects a maximum value of the obtained first correlation values to detect a slot timing;', 'a second correlation system that calculates a correlation between the received signal and each of a plurality of candidates for a long code group identification short code to obtain second correlation values in association with the detected slot timing;', 'an acquiring system that obtains a long code group in association with the long code group identification short code with a maximum value of the obtained second correlation values, while detecting a beginning position of a long code in association with a pattern of the obtained second correlation values to detect a frame timing;', 'a third correlation system that calculates a correlation between the received signal and each of long codes belonging to the obtained long code group in association with the detected frame timing to obtain third correlation values; and', 'an identification system that identifies a long code used by a base station that transmits the received signal, in association with the obtained third correlation values.
2. A radio communication base station apparatus that transmits a signal having a plurality of slots to a radio communication terminal apparatus comprising a first correlation system that calculates a correlation between a received signal having the plurality of slots and a short code common to all base stations to obtain first correlation values, a detecting system that detects a maximum value of the obtained first correlation values to detect a slot timing, a second correlation system that calculates a correlation between the received signal and each of a plurality of candidates for a long code group identification short code to obtain second correlation values in association with the detected slot timing, an acquiring system that obtains a long code group in association with the long code group identification short code with a maximum value of the obtained second correlation values, while detecting a beginning position of a long code in association with a pattern of the obtained second correlation values to detect a frame timing, a third correlation system that calculates a correlation between the received signal and each of long codes belonging to the obtained long code group in association with the detected frame timing to obtain third correlation values, and an identification system that identifies a long code used by said radio communication base station apparatus, in association with the obtained third correlation values, said radio communication base station apparatus comprising:
a multiplexing system that arranges first masked symbols at equal intervals on a frame and multiplexes second masked symbols on the first masked symbols according to a predetermined pattern; and
a transmission system that transmits the signal having the first masked symbol and the second masked symbol.', 'a multiplexing system that arranges first masked symbols at equal intervals on a frame and multiplexes second masked symbols on the first masked symbols according to a predetermined pattern; and', 'a transmission system that transmits the signal having the first masked symbol and the second masked symbol.
3. A cell search method comprising:
calculating a correlation between a received signal having a plurality of slots and a short code common to all base stations to obtain first correlation values;
detecting a maximum value of the obtained first correlation values to detect a slot timing;
calculating a correlation between the received signal and each of a plurality of candidates for a long code group identification short code to obtain second correlation values in association with the detected slot timing;
obtaining a long code group in association with the long code group identification short code with a maximum value of the obtained second correlation values, while detecting a beginning position of a long code in association with a pattern of the obtained second correlation values to detect a frame timing;
calculating a correlation between the received signal and each of long codes belonging to the obtained long code group in association with the detected frame timing to obtain third correlation values; and
identifying a long code used by a base station that transmits the received signal, in association with the obtained third correlation values.', 'calculating a correlation between a received signal having a plurality of slots and a short code common to all base stations to obtain first correlation values;', 'detecting a maximum value of the obtained first correlation values to detect a slot timing;', 'calculating a correlation between the received signal and each of a plurality of candidates for a long code group identification short code to obtain second correlation values in association with the detected slot timing;', 'obtaining a long code group in association with the long code group identification short code with a maximum value of the obtained second correlation values, while detecting a beginning position of a long code in association with a pattern of the obtained second correlation values to detect a frame timing;', 'calculating a correlation between the received signal and each of long codes belonging to the obtained long code group in association with the detected frame timing to obtain third correlation values; and', 'identifying a long code used by a base station that transmits the received signal, in association with the obtained third correlation values.']
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.