Abstract
A method and system that enables faster acquisition of the forward link signal of a target base station in a mixed network of synchronous and asynchronous base stations is disclosed. The serving base station transmits in a neighbor list an estimated timing error 417 between the serving base station and a target base station. By utilizing the timing information a mobile station estimates the relative time offset 408 between forward link signals received from the serving base station and signals received from the target base station. Timing information acquired during handoff enables accurate updating of the estimated timing error 417 subsequently transmitted in the neighbor lists by the base stations.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 3G | 27/01/2010 | ISLD-201004-004 | QUALCOMM INC | Yes | Family Member | ||||
| Not Available | 27/01/2010 | ISLD-201004-004 | QUALCOMM INC | Yes | Family Member | ||||
Specification Information
Specification Information
Technologies
Family Information
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| US2001021179A1 | Not Available | 27/01/2010 | ISLD-201004-004 | QUALCOMM INC | Yes | Basis Patent | ||||
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
Broadcast/Multicast
Product
Use Cases
Wireless communication
Services
Claim
1. A method for establishing a handoff of a wireless mobile station from a serving base station to an asynchronous target base station comprising the steps of:', 'evaluating a timing error associated with the asynchronous target base station;', 'estimating a search window for use in searching for an asynchronous pilot code based on said timing error; and', 'searching for the asynchronous pilot code within said search window.
2. The method of claim 1 further comprising the steps of:', 'searching for a primary synchronization code based on said timing error exceeding a first predetermined value, wherein said primary synchronization code is transmitted by the asynchronous target base station; and', 'searching for a secondary synchronization code based on said timing error exceeding a first predetermined value, wherein said secondary synchronization code is transmitted by the asynchronous target base station.
3. The method of claim 2 further comprising the step of determining a CDMA System Time from a forward link signal transmitted by the asynchronous target base station.
4. The method of claim 2 further comprising the step of determining a forward frame number from a forward link signal transmitted by the asynchronous target base station.
5. A method for establishing a handoff of a wireless mobile station from an asynchronous serving base station to a synchronous target base station comprising the steps of:', 'evaluating a timing error associated with the asynchronous serving base station and the synchronous target base station;', 'estimating a search window for use in searching for a synchronous pilot pseudonumber (PN) signal based on said timing error; and', 'searching for the pilot PN signal within said search window.
6. A method for establishing a handoff in a wireless network comprising an asynchronous serving base station and a synchronous target base station, the method comprising the steps of:', 'receiving a message from a first wireless mobile station indicating a first system time associated with the asynchronous serving base station and indicating a second system time associated with the synchronous target base station;', 'generating, based on said first system time and said second system time a timing error value; and', 'sending a neighbor list to a wireless mobile station, the neighbor list comprising the timing error value.
7. A method for establishing a handoff of a wireless mobile station from a serving base station to an asynchronous target base station comprising the steps of:', 'evaluating a timing error associated with the asynchronous target base station;', 'estimating a search window for use in searching for an asynchronous pilot code based on said timing error; and', 'searching for the asynchronous pilot code within said search window.']
Associated Portfolios
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
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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.