Open/Closed Loop Synchronization for Radio Transmitters
First Claim
Patent Images
1. A method, comprising:
- determining a first propagation delay estimate to a first node;
determining a second propagation delay estimate to a second node;
receiving a first synchronization message from the first node; and
transmitting a second synchronization message to the second node wherein the second synchronization message depends on the first synchronization message, the first propagation delay estimate, and the second propagation delay estimate.
2 Assignments
0 Petitions
Accused Products
Abstract
Methods and systems can provide accurate synchronization of two nodes even when those nodes cannot communicate directly with one another. A method, for example, can include determining a first propagation delay estimate to a first node (910). The method can also include determining a second propagation delay estimate to a second node (920). The method can further include receiving a first synchronization message from the first node (930). The method can additionally include transmitting a second synchronization message to the second node (940). The second synchronization message depends on the first synchronization message, the first propagation delay estimate, and the second propagation delay estimate.
-
Citations
21 Claims
-
1. A method, comprising:
-
determining a first propagation delay estimate to a first node; determining a second propagation delay estimate to a second node; receiving a first synchronization message from the first node; and transmitting a second synchronization message to the second node wherein the second synchronization message depends on the first synchronization message, the first propagation delay estimate, and the second propagation delay estimate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method, comprising:
-
estimating the accumulated movement of a radio transmitter device; encoding the accumulated movement into a motion estimation message; and transmitting the motion estimation message to a device. - View Dependent Claims (10)
-
-
11. An apparatus, comprising:
-
at least one memory including computer program code; and at least one processor, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to determine a first propagation delay estimate to a first node; determine a second propagation delay estimate to a second node; process a received first synchronization message from the first node; and transmit a second synchronization message to the second node wherein the second synchronization message depends on the first synchronization message, the first propagation delay estimate, and the second propagation delay estimate. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
-
-
19. An apparatus, comprising:
-
at least one memory including computer program code; and at least one processor, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to estimate the accumulated movement of a radio transmitter device; encode the accumulated movement into a motion estimation message; and transmit the motion estimation message to a device. - View Dependent Claims (20)
-
-
21. (canceled)
Specification