Absolute time recovery
AssigneeAirvana, Inc.
InventorPierre A. Humblet
Life of this patent
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Abstract
A method includes receiving from a server, information that is based on an offset between a boundary of a synchronous capsule in a control channel cycle occurring at an access point and a boundary of a periodic pseudo-noise sequence, and synchronizing an access point to an absolute time based on the information. In addition, the method includes transmitting to the server a difference between a first boundary of a PN short code of a current sector and a second boundary of a PN short code of a reference sector.
Claims55
A method comprising:
- receiving from a server, information that is based on an offset between (a) a boundary of a synchronous capsule in a control channel cycle occurring at an access point and (b) a boundary of a periodic pseudo-noise sequence, and
- synchronizing an access point to an absolute time based on the information.
A method comprising:
- receiving a UTC time corresponding to a beginning of a control channel cycle, and
- synchronizing an access point to the UTC time, if at least a predetermined number of sectors, each having a unique synchronous capsule offset, is acquired by the access point.
A method comprising:
- synchronizing an access point to a periodic pseudo-noise sequence in a macro signal, and
- establishing absolute time synchronization based on at least (a) a boundary of a synchronous capsule in a control channel cycle occurring at the access point and (b) a beginning of the periodic pseudo-noise sequence that immediately precedes the boundary of the synchronous capsule.
A method comprising:
- receiving a difference between a first boundary of a first PN short code corresponding to a current sector and a second boundary of a second PN short code corresponding to a reference sector,
- determining information corresponding to the current sector based on the difference, and
- transmitting the information corresponding to the current sector to an access point.
An apparatus comprising:
- an access point configured to:
- receive information that is based on an offset between (a) a boundary of a synchronous capsule in a current control channel cycle occurring at the access point and (b) a beginning of a periodic pseudo-noise sequence, and
- synchronize the access point to an absolute time based on the information.
An apparatus comprising:
- a server configured to:
- receive a difference between a first boundary of a first PN short code corresponding to a current sector and a second boundary of a second PN short code corresponding to a reference sector,
- determine information corresponding to the current sector based on the difference, and
- transmit the information corresponding to the current sector to an access point.
A computer readable medium comprising instructions to cause an access point to:
- receive information that is based on an offset between (a) a boundary of a synchronous capsule in a current control channel cycle occurring at the access point and (b) a beginning of a periodic pseudo-noise sequence, and
- establish absolute time synchronization based on the information.
A computer readable medium comprising instructions to cause a server to:
- receive a difference between a first boundary of a first PN short code corresponding to a current sector and a second boundary of a second PN short code corresponding to a reference sector,
- determine information corresponding to the current sector based on the difference, and
- transmit the information corresponding to the current sector to an access point.
A method comprising:
- receiving from a server, information that is based on an offset between a first timing boundary and a second timing boundary, and
- synchronizing an access point to an absolute time based on the information.
Dependencies are inferred from the claim text.