Method and system for acquiring time synchronization between base stations in a broadband wireless access communication system
First Claim
1. A method for acquiring time synchronization by a first base station in a broadband wireless access communication system including a plurality of base stations which include certain base stations having already acquired time synchronization and a first base station requiring acquisition of time synchronization, the method comprising the steps of:
- scanning neighbor base stations around the first base station and requesting time synchronization information from the scanned neighbor base stations by the first base station;
receiving responses from predetermined neighbor base stations having already acquired time synchronization from among the neighbor base stations, the responses including time synchronization information of the predetermined neighbor base stations; and
selecting a second base station from among the predetermined neighbor base stations and acquiring time synchronization based on the time synchronization information of the second base station.
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Accused Products
Abstract
Disclosed is a method and system by which a base station without a Global Positioning System (GPS) receiver acquires time synchronization in a Broadband Wireless Access (BWA) communication system. The method includes scanning neighbor base stations around a first base station and requesting time synchronization information from the scanned neighbor base stations by the first base station; receiving responses from predetermined neighbor base stations having already acquired time synchronization from among the neighbor base stations, the responses including time synchronization information of the predetermined neighbor base stations; and selecting a second base station from among the predetermined neighbor base stations and acquiring time synchronization based on the time synchronization information of the second base station.
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Citations
52 Claims
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1. A method for acquiring time synchronization by a first base station in a broadband wireless access communication system including a plurality of base stations which include certain base stations having already acquired time synchronization and a first base station requiring acquisition of time synchronization, the method comprising the steps of:
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scanning neighbor base stations around the first base station and requesting time synchronization information from the scanned neighbor base stations by the first base station;
receiving responses from predetermined neighbor base stations having already acquired time synchronization from among the neighbor base stations, the responses including time synchronization information of the predetermined neighbor base stations; and
selecting a second base station from among the predetermined neighbor base stations and acquiring time synchronization based on the time synchronization information of the second base station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for supporting acquisition of time synchronization of a first base station by a second base station in a broadband wireless access communication system including a plurality of base stations which include certain base stations having already acquired time synchronization and the first base station requiring acquisition of time synchronization, the second base station being one of the certain base stations and located adjacently to the first base station, the method comprising the steps of:
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receiving a time synchronization information request message from the first base station by the second base station; and
transmitting a response message including time synchronization information of the second base station to the first base station in response to the time synchronization information request message, so that the first base station can acquire time synchronization with the second base station. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method for acquiring time synchronization by a first base station in a broadband wireless access communication system including a plurality of base stations which include certain base stations having already acquired time synchronization and the first base station requiring acquisition of time synchronization, the method comprising the steps of:
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scanning neighbor base stations around the first base station and requesting time synchronization information from the scanned neighbor base stations by the first base station;
receiving responses from predetermined neighbor base stations having already acquired time synchronization from among the neighbor base stations, the responses including time synchronization information of the predetermined neighbor base stations, passed base station information and certificate information;
determining availability of the received time synchronization information based on the certificate information and comparing the passed base station information based on the determined availability; and
selecting a second base station from among the predetermined neighbor base stations based on the comparison and acquiring time synchronization based on the time synchronization information of the second base station. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
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27. A method for supporting acquisition of time synchronization of a first base station by a second base station in a broadband wireless access communication system including a plurality of base stations which include certain base stations having already acquired time synchronization and the first base station requiring acquisition of time synchronization, the second base station being one of the certain base stations and located adjacently to the first base station, the method comprising the steps of:
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receiving a time synchronization information request message from the first base station by the second base station; and
transmitting a response message including time synchronization information of the second base station, passed base station information and certificate information to the first base station in response to the time synchronization information request message, so that the first base station can acquire time synchronization with the second base station. - View Dependent Claims (28, 29, 30, 31, 32, 33)
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34. A system for acquiring time synchronization by a first base station in a broadband wireless access communication system including a plurality of base stations which include certain base stations having already acquired time synchronization and the first base station requiring acquisition of time synchronization, the system comprising:
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the first base station for scanning neighbor base stations around the first base station, requesting time synchronization information from the scanned neighbor base stations, receiving responses from predetermined neighbor base stations having already acquired time synchronization from among the neighbor base stations, selecting a second base station from among the predetermined neighbor base stations, and acquiring time synchronization based on the time synchronization information of the second base station, the responses including time synchronization information of the predetermined neighbor base stations; and
the second base station for, in response to the request for the time synchronization information from the first base station, transmitting a response message including time synchronization information of the second base station to the first base station, so that the first base station can acquire time synchronization with the second base station. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A system for acquiring time synchronization by a first base station in a broadband wireless access communication system including a plurality of base stations which include certain base stations having already acquired time synchronization and the first base station requiring acquisition of time synchronization, the system comprising:
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the first base station for scanning neighbor base stations around the first base station, requesting time synchronization information from the scanned neighbor base stations by the first base station, receiving responses from predetermined neighbor base stations having already acquired time synchronization from among the neighbor base stations, determining availability of the received time synchronization information based on the certificate information, comparing the passed base station information based on the determined availability, selecting a second base station from among the predetermined neighbor base stations based on the comparison, and acquiring time synchronization based on the time synchronization information of the second base station, the responses including time synchronization information of the predetermined neighbor base stations, passed base station information and certificate information; and
the second base station for, in response to the request for the time synchronization information from the first base station, transmitting a response message including the time synchronization information of the second base station, the passed base station information and the certificate information to the first base station, so that the first base station can acquire the synchronization with the second base station. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52)
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Specification