Abstract
A method and apparatus which permits handoffs while the mobile station is in the system access state. This is achieved by providing for channel assignment messages to be sent over the paging channel of a plurality of base stations which increases the probability of one of the messages getting through. In addition this assures the mobile station will be able handoff to a different base station and have a traffic channel allocated to it on the new base station without delay. In addition a method and apparatus which permits the mobile station to be directly assigned into a soft handoff state upon traffic channel assignment.
Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
Not Available | 18/10/2001 | ISLD-200111-002 | QUALCOMM INC | No | Family Member | ||||
Not Available | 12/06/2006 | ISLD-200612-006 | QUALCOMM INC | No | Family Member | ||||
Not Available | 12/06/2006 | ISLD-200612-006 | QUALCOMM INC | Yes | Basis Patent |
Specification Information
Specification Information
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AU3381297A | Not Available | 18/10/2001 | ISLD-200111-002 | QUALCOMM INC |
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Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Declaration Date | Declaration Reference | Declaring Company | Specification Information | |||||||||
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Technologies
Product
Use Cases

Services
Claim
1. A method for receiving channel assignment messages at a mobile station in a code division multiple access (CDMA) system, the method comprising the steps of:', 'measuring strength of signals from a plurality of base stations;', 'determining a subset of said plurality of base stations based on the strengths of the signals from said plurality of base stations relative to a predetermined threshold;', 'transmitting an origination message from said mobile station in an access state, said origination message indicating the base stations in said subset; and', 'receiving a channel assignment message from each of the base stations of said subset, the channel assignment message indicating a traffic channel.
2. The method of claim 1 wherein said origination message indicates a mobile station identifier.
3. The method of claim 2 wherein the base stations in said subset are identified by a plurality of pilot pseudo-noise (PN) offsets, respectively.
4. The method of claim 1 further comprising the steps of:', 'demodulating a traffic channel frame from each of said subset of base stations; and', 'combining said demodulated traffic channel frame to provide an improved estimate of said traffic channel frame.
5. The method as claimed in claim 1 further comprising:', 'receiving an acknowledgement message from said subset of said plurality of base stations.
6. The method as claimed in claim 1 wherein the step of receiving a channel assignment message comprises:', 'receiving a paging message from said subset of said plurality of base stations, the paging message indicating traffic channel of one of the base stations transmitting said message.
7. The method as claimed in claim 1 wherein the step of receiving a channel assignment message comprises:', 'receiving a paging message from said subset of said plurality of base stations, the paging message indicating traffic channel of each base station of said subset of said plurality of base stations.
8. A code division multiple access (CDMA) mobile station apparatus, comprising:', 'a receiver configured to:', 'measure strengths of signals from a plurality of base stations; and', 'determine a subset of said plurality of base stations based on the strengths of the signals from said plurality of base stations relative to a predetermined threshold; and', 'a transmitter coupled to said receiver configured to transmit an origination message in an access state, said origination message indicating the base stations in said subset, wherein said receiver is configured to receive a channel assignment message from each of the base stations of said subset, the channel assignment message indicating a traffic channel.
9. The apparatus of claim 8 wherein said origination message indicates a mobile station identifier
10. The apparatus of claim 9 wherein the base stations in said subset are identified by a plurality of pilot pseudo-noise (PN) offsets, respectively
11. The apparatus of claim 8 further comprising:', 'a demodulator configured to demodulate a traffic channel frame from each of said subset of base stations; and', 'a combiner to combine said demodulated traffic channel frame to provide an improved estimate of said traffic channel frame
12. The apparatus as claimed in claim 8 wherein said receiver is further configured to', 'receive an acknowledgement message from said subset of said plurality of base stations
13. The apparatus as claimed in claim 8 wherein said receiver is further configured to:', 'receive a paging message from said subset of said plurality of base stations, the paging message indicating traffic channel of one of the base stations transmitting said message
14. The apparatus as claimed in claim 8 wherein said receiver is further configured to:', 'receive a paging message from said subset of said plurality of base stations, the paging message indicating traffic channel of each base station of said subset of said plurality of base stations
15. A method for receiving channel assignment messages at a mobile station in a code division multiple access (ODMA) system, the method comprising the steps of:', 'measuring strengths of signals from a plurality of base stations;', 'determining a subset of said plurality of base stations based on the strengths of the signals from said plurality of base stations relative to a predetermined threshold;', 'transmitting a page response message from said mobile station in an access state, said page response message indicating the base stations in said subset; and', 'receiving a paging message from each of the base stations of said subset, the paging message indicating a traffic channel
16. The method of claim 15 wherein said page response message indicates a mobile station identifier
17. The method of claim 15 wherein the base stations in said subset are identified by a plurality of pilot pseudo-noise (PN) offsets, respectively
18. The method of claim 15 further comprising the steps of:', 'demodulating a traffic channel frame from each of said subset of base stations; and', 'combining said demodulated traffic channel frame to provide an improved estimate of said traffic channel frame
19. The method as claimed in claim 15 further comprising:', 'receiving an acknowledgement message from said subset of said plurality of base stations.
20. The method as claimed in claim 15 wherein the step of receiving a paging message comprises:', 'receiving a paging message from said subset of said plurality of base stations the paging message indicating traffic channel of one of the base stations transmitting said message.
21. The method as claimed in claim 15 wherein the step of receiving a paging message comprises:', 'receiving a paging message from said subset of said plurality of base stations, the paging message indicating traffic channel of each base station of said subset of said plurality of base stations.
22. A code division multiple access (CDMA) mobile station apparatus, comprising:', 'a receiver configured to:', 'measure strengths of signals from a plurality of base stations; and', 'determining a subset of said plurality of base stations based on the strengths of the signals from said plurality of base stations relative to a predetermined threshold; and', 'a transmitter coupled to said receiver configured to transmit a page response message in an access state, said page response message indicating the base stations in said subset, wherein said receiver is configured to receive a paging message from each of the base stations of said subset, the paging message indicating a traffic channel.
23. The apparatus of claim 22 wherein said page response message indicates a mobile station identifier.
24. The apparatus of claim 23 wherein the base stations in said subset are identified by a plurality of pilot pseudo-noise (PN) offsets, respectively.
25. The apparatus of claim 22 further comprising:', 'a demodulator configured to demodulate a traffic channel frame from each of said subset of base stations; and', 'a combiner to combine said demodulated traffic channel frame to provide an improved estimate of said traffic channel frame.
26. The apparatus as claimed in claim 22 wherein the receiver is further configured to', 'receive an acknowledgement message from said subset of said plurality of base stations.
27. The apparatus as claimed in claim 22 wherein said receiver is further configured to:', 'receive a paging message from said subset of said plurality of base stations, the paging message indicating traffic channel of one of the base stations transmitting said message.
28. The apparatus as claimed in claim 22 wherein said receiver is further configured to:', 'receive a paging message from said subset of said plurality of base stations, the paging message indicating traffic channel of each base station of said subset of said plurality of base stations.']
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SUMMARY
ClaimChart-US6654611B2-STO
Patent number:US6654611B2
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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
The information in purple was extracted from the FrandAvenue
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.