IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0634322
(2003-08-04)
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발명자
/ 주소 |
- Carter,Stephen
- Moeglein,Mark
- DeLoach, Jr.,James D.
- Riley,Wyatt T.
- Agre,Daniel H.
- Sheynblat,Leonid
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출원인 / 주소 |
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인용정보 |
피인용 횟수 :
140 인용 특허 :
7 |
초록
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A method of obtaining data useful for one or more network applications is described. The method is performed responsive to a triggering event, such as a dropped call, a position fix, or even expiration of a timer. A position estimate for a subscriber station is obtained responsive to the event. A re
A method of obtaining data useful for one or more network applications is described. The method is performed responsive to a triggering event, such as a dropped call, a position fix, or even expiration of a timer. A position estimate for a subscriber station is obtained responsive to the event. A record is then formed associating the position estimate for the subscriber station with an identifier of the triggering event and/or data measured or obtained responsive to the event, such as the strength of one or more pilots visible to the subscriber station. The record is either stored locally or transmitted to a remote location. In one implementation, the record is transmitted to a remote location, and stored in a database holding like records relating to other subscriber stations.
대표청구항
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What is claimed is: 1. A method of obtaining data useful for one or more wireless network applications, the method comprising performing the following steps: detecting an occurrence of a network event; obtaining a position estimate for a subscriber station operating within a wireless communications
What is claimed is: 1. A method of obtaining data useful for one or more wireless network applications, the method comprising performing the following steps: detecting an occurrence of a network event; obtaining a position estimate for a subscriber station operating within a wireless communications system responsive to detecting the occurrence of the network event; forming a record associating the position estimate for the subscriber station with at least one of an event identifier and data, measured or obtained, responsive to obtaining the position estimate; and storing or transmitting the record responsive to forming the record; wherein the network event includes at least one of the following: the subscriber station entering a coverage area, the subscriber station exiting a coverage area, and an expiration of a timer while the subscriber station is outside the coverage area of a wireless communications system. 2. The method of claim 1 wherein the network event is observed by the subscriber station. 3. The method of claim 1 wherein the network event is observed by an entity in the wireless communication system other than the subscriber station. 4. The method of claim 1 wherein the network event includes an actual or near dropped call condition. 5. The method of claim 1 wherein the network event includes a failed handoff condition. 6. The method of claim 1 wherein the network event includes a handoff or near handoff condition. 7. The method of claim 6 wherein the handoff condition includes a hard or soft handoff condition. 8. The method of claim 6 wherein the near handoff condition includes a hard or soft handoff condition. 9. The method of claim 1 wherein the network event includes a change in band condition. 10. The method of claim 1 wherein the network event includes passage of the subscriber station between the coverage areas of two wireless communications systems or system entities. 11. The method of claim 1 wherein the network event includes passage of the subscriber station between coverage areas of a donor base station and a repeater. 12. The method of claim 1 wherein the network event includes detection at the subscriber station of an unexpected or unexpectedly strong pilot. 13. The method of claim 1 wherein the network event includes detection at the subscriber station of an unexpected base station. 14. The method of claim 1 wherein the network event includes detection at the subscriber station of a pilot, which is absent from the subscriber station's neighbor list. 15. A method of obtaining data useful for one or more wireless network applications, the method comprising performing the following steps: detecting an expiration of a timer; obtaining a position estimate for a subscriber station operating within a wireless communications system responsive to detecting the expiration of the timer; forming a record associating the position estimate for the subscriber station with at least one of an event identifier and data, measured or obtained, responsive to obtaining the position estimate; and storing or transmitting the record responsive to forming the record; wherein the record associates the position estimate with one or more measurements of pilot strength and phase; wherein at least one of the pilots is associated with a traffic channel existing between the subscriber station and a base station; and wherein the traffic channel is at least one of a forward traffic channel, and a reverse traffic channel. 16. A method of obtaining data useful for one or more wireless network applications, the method comprising performing the following steps: detecting a user initiation of a 911 call; obtaining a position estimate for a subscriber station operating within a wireless communications system responsive to detecting the user initiation of the 911 call; forming a record associating the position estimate for the subscriber station with at least one of an event identifier and data, measured or obtained, responsive to obtaining the position estimate; and storing or transmitting the record responsive to forming the record, wherein the record associates the position estimate with one or more measurements of pilot strength and phase; wherein at least one of the pilots is associated with a traffic channel existing between the subscriber station and a base station; wherein the traffic channel is at least one of a forward traffic channel, and a reverse traffic channel. 17. A method of obtaining data useful for one or more wireless network applications, the method comprising performing the following steps: detecting a request for position-dependent services in a Web-enabled subscriber station; obtaining a position estimate for a subscriber station operating within a wireless communications system responsive to detecting the request for position-dependent services in the Web-enabled subscriber station; forming a record associating the position estimate for the subscriber station with at least one of an event identifier and data, measured or obtained, responsive to obtaining the position estimate; and storing or transmitting the record responsive to forming the record; wherein the record associates the position estimate with one or more measurements of pilot strength and phase; wherein at least one of the pilots is associated with a traffic channel existing between the subscriber station and a base station; and wherein the traffic channel is at least one of a forward traffic channel, and a reverse traffic channel. 18. A method of obtaining data useful for one or more wireless network applications, the method comprising performing the following steps: detecting an occurrence of a triggering event; obtaining a position estimate for a subscriber station operating within a wireless communications system responsive to detecting the occurrence of the triggering event; detecting an expiration of a timer; obtaining the position estimate for a subscriber station operating within the wireless communications system responsive to detecting the expiration of the timer; forming a record associating the position estimate for the subscriber station with at least one of an event identifier and data, representing one or more measurements of pilot strength or phase, measured or obtained, responsive to obtaining the position estimate; and storing or transmitting the record responsive to forming the record. 19. The method of claim 18 wherein at least one of the pilots is associated with a traffic channel existing between the subscriber station and a base station. 20. The method of claim 19 wherein the traffic channel is a forward traffic channel. 21. The method of claim 19 wherein the traffic channel is a reverse traffic channel. 22. The method of claim 1 wherein the position estimate is determined by the subscriber station. 23. The method of claim 1 wherein the position estimate is determined by an entity in the system other than the subscriber station. 24. The method of claim 23 wherein the other entity is a position determination entity. 25. The method of claim 1 wherein the record is stored locally at the subscriber station. 26. The method of claim 1 wherein the record is transmitted and stored at a remote location in the wireless communication system. 27. The method of claim 26 wherein the record associating the position of the subscriber station is stored in a database holding records associating the positions of other subscriber stations obtained by other subscriber stations serviced by the wireless communication system. 28. The method of claim 27 wherein base station almanac information is related to said database. 29. A memory storing a sequence of software instructions embodying the method of claim 1. 30. A system comprising a processor, and the memory of claim 29, wherein the processor is configured to access and execute the software instructions stored in the memory. 31. The system of claim 30 embodied by or incorporated within a subscriber station. 32. A wireless communications system for obtaining data useful for one or more network applications comprising: one or more network entities each configured to (1) obtain or have obtained a position estimate for a subscriber station responsive to detecting an occurrence of a network event, (2) form or have formed a record associating the position estimate for the subscriber station with at least one of an identifier of the network event and data, measured or obtained, responsive to the obtaining or having obtained the position estimate, and (3) store or having stored the record in a database responsive to forming or having formed the record; wherein the one or more network events comprise a failed handoff condition, further comprising a memory holding data representing a map of failed handoff areas derived from the database, and for each area, association data associating the area with one or more base stations. 33. The system of claim 32 comprising one or more subscriber stations configured to access data derived from the database and, upon detecting roaming into a failed handoff area using this data, forcing or having forced one or more base stations associated with the failed handoff area onto one or more lists applicable to the subscriber station for supporting handoffs. 34. The system of claim 32 further comprising one or more subscriber stations configured to access the data derived from the database and, upon detecting roaming into a failed handoff area using this data, adjusting or having adjusted one or more thresholds applicable to the subscriber station for supporting handoffs. 35. The system of claim 32 further comprising one or more subscriber stations configured to access the data derived from the database and, upon detecting roaming into a failed handoff area using this data, adjusting or having adjusted one or more search times applicable to the subscriber station for supporting handoffs. 36. The system of claim 32 wherein the one or more triggering events comprises a subscriber station roaming into, out of, or within a coverage gap. 37. The system of claim 36 further comprising a memory holding data derived from the database comprising a map of coverage gaps. 38. The system of claim 36 further comprising a memory holding data derived from the database and representing one or more gradient maps. 39. A method of obtaining data useful for one or more wireless network applications comprising performing the following steps by or for each of a plurality of subscriber stations operating within a wireless communications system: detecting an occurrence of a network event; obtaining a position estimate for a subscriber station responsive to the detecting the occurrence of the network events; forming a record associating the position estimate for the subscriber station with at least one of an identifier of the triggering event and data measured or obtained responsive to the obtaining the position estimate; and storing or having stored the record in a database responsive to the forming the record; wherein the network event includes at least one of the following: the subscriber station entering a coverage area, the subscriber station exiting a coverage area, and an expiration of a timer while the subscriber station is outside the coverage area of a wireless communications system. 40. The method of claim 39 wherein the network events comprises failed handoff conditions. 41. The method of claim 40 further comprising deriving data from the database comprising a map of failed handoff areas, and association data associating with each area one or more base stations. 42. The method of claim 41 further comprising, upon a subscriber station roaming into a failed handoff area, forcing or having forced a base station associated with the failed handoff area onto one or more of lists applicable to the subscriber station for supporting handoffs. 43. The method of claim 41 further comprising, upon a subscriber station roaming into a failed handoff area, adjusting or having adjusted one or more thresholds applicable to the subscriber station for supporting handoffs. 44. The method of claim 41 further comprising, upon a subscriber station roaming into a failed handoff area, adjusting or having adjusted one or more search times applicable to the subscriber station for supporting handoffs. 45. The method of claim 39 wherein the one or more triggering events comprises roaming into, out of, or within coverage gaps. 46. The method of claim 45 further comprising deriving data from the database representing a map of coverage gaps. 47. The method of claim 45 further comprising deriving data from the database representing one or more gradient maps. 48. The method of claim 46 further comprising using the data for a network planning or optimization application. 49. The method of claim 47 further comprising using the data for a network planning or optimization application, or for validating an RF propagation model. 50. A method of obtaining data useful for one or more wireless network applications comprising performing the following steps: a step for forming records associating, for each of a plurality of subscriber stations, a position estimate for the subscriber station obtained, responsive to detecting an occurrence of a network event, with at least one of an identifier of the network event and data, measured or obtained, responsive to the position estimate; a step for storing the records in a database responsive to the step for forming the records; and a step for performing one or more network planning, optimization, validation or operations applications using data derived from the database; wherein the network event includes at least one of the subscriber station entering the coverage area, the subscriber station exiting the coverage area, and an expiration of a timer while the subscriber station is outside the coverage area of the wireless communications system.
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