| 摘要 |
PROBLEM TO BE SOLVED: To provide more efficient and reliable methods for performing time and frequency synchronization for access points.SOLUTION: An access point (e.g., a femto cell) that is connected in an active call with an access terminal cooperates with the access terminal to derive timing information from one or more neighboring access points (e.g., macro access points). An access terminal determines the difference between pilot transmission timing or frame transmission timing of a femto cell and pilot transmission timing or frame transmission timing of a macro cell, and reports this timing difference to the femto cell. Based on this timing difference, the femto cell adjusts the timing and/or frequency of its transmissions so that the transmissions of the femto cell are synchronized in time and/or frequency as per network operation requirements. |
