Resuming a previously interrupted peer-to-peer synchronization operation

• US 7,715,444 B2
• Filed: 02/02/2007
• Issued: 05/11/2010
• Est. Priority Date: 02/02/2007
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Palm, Inc. (TCL Technology Group Corp.)
• Inventors: Ryleev, Mikhail, Goyal, Sidd
• Primary Examiner(s): Pham; Chi H
• Assistant Examiner(s): Wong; Warner
• Application Number:
  US11/670,949
• Publication Number:
  US 20080187007A1
• Time in Patent Office: 1,194 Days
• Field of Search: 370/216, 370/252, 370/503, 370/507, 370509-510, 370/513, 370/516, 370/519, 709/248
• US Class Current: 370/507
• CPC Class Codes: G06F 16/178 Techniques for file synchronisation in file systems
• CPC Class Codes: G06F 16/1834 implemented based on peer-to-peer networks, e.g. gnutella p2p communication protocols H04L67/104
• CPC Class Codes: H04L 67/1095 Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes

Abstract

A method of synchronizing data between two devices can include starting, in a first device, a first synchronization operation comprising transmitting a first data set to be received by a second device, the first data set comprising changes to multiple different data elements in the first device that have occurred since a prior successful synchronization operation between the first device and the second device; receiving at least one of separate acknowledgements for each of the multiple different data elements, each such acknowledgement indicating that a change to one of the multiple different data elements in the first device has been applied to a corresponding data element in the second device; and when the first synchronization operation is interrupted, initiating a second synchronization operation to synchronize the changes of the first data set for which a separate acknowledgement was not received during the first synchronization operation.

Claims

1. A method of synchronizing data between two devices, the method comprising:

starting, in a first device, a first synchronization operation comprising transmitting a first data set to be received by a second device, the first data set comprising changes to multiple different data elements in the first device that have occurred since a prior successful synchronization operation between the first device and the second device;

receiving, during the first synchronization operation, at least one of separate acknowledgements for each of the multiple different data elements, each such acknowledgement indicating that a change to one of the multiple different data elements in the first device has been applied to a corresponding data element in the second device; and

when the first synchronization operation is interrupted and a separate acknowledgment has not been received for each of the multiple different data elements, initiating a second synchronization operation comprising transmitting a second data set to be received by the second device, the second data set comprising the changes to the multiple different data elements of the first data set for which a separate acknowledgement was not received during the first synchronization operation; and

further comprising generating a change list having a change instruction for each change in the first data set; and

further comprising setting a flag corresponding to each change instruction for which a corresponding separate acknowledgment has been received; and

further comprising generating the second data set, wherein generating the second data set comprises identifying one or more change instructions in the change list for which a corresponding log entry has not been generated.