초록 ▼

A system and method for calculating a range delay is presented. A method begins by transmitting a first message at a first transmit time at a lower layer of a first node to a second node. A first service primitive is sent is sent to an upper layer associated with the first node with the first transm

A system and method for calculating a range delay is presented. A method begins by transmitting a first message at a first transmit time at a lower layer of a first node to a second node. A first service primitive is sent is sent to an upper layer associated with the first node with the first transmit time. A second message is received at the lower layer containing a first receive time of the first message at the second node. A second receive time of the second message is determined and sent with a second service primitive with the first receive time to the upper layer. A range delay is calculated in the upper layer based on one or more of the first transmit time, the first receive time and the second receive time.

대표청구항 ▼

1. A method for calculating a range delay comprising: transmitting a first message at a lower layer of a first node to a second node, wherein the first message is transmitted at a first transmit time;sending a first service primitive with the first transmit time, wherein the first service primitive

1. A method for calculating a range delay comprising: transmitting a first message at a lower layer of a first node to a second node, wherein the first message is transmitted at a first transmit time;sending a first service primitive with the first transmit time, wherein the first service primitive is sent to an upper layer associated with the first node;receiving a second message at the lower layer of the first node containing a first receive time of the first message at the second node and optionally containing a second transmit time of the second message from the second node;determining at the lower layer of the first node a second receive time of the second message;sending a second service primitive with the first receive time of the first message at the second node and the second receive time of the second message at the first node to the upper layer associated with the first node;calculating a range delay in the upper layer based, at least in part, on one or more of the first transmit time, the first receive time, the second transmit time, and the second receive time; andsending a transmit service primitive from the upper layer to the lower layer instructing the lower layer to send the first message, wherein the lower layer sends the first message responsive to the transmit service primitive; andwherein the first node and the second node are radios and wherein the transmitting the first message further comprises:transmitting the first message out of an antenna at the first node. 2. The method for calculating the range delay of claim 1 further comprising: receiving a third message at the lower layer of the first node containing the second transmit time of the second message from the second node;sending a third service primitive from the lower layer to the upper layer, wherein the third service primitive includes the second transmit time. 3. The method for calculating the range delay of claim 2 wherein: the first transmit time=TD1-N;the first receive time=RD2-N;the second transmit time=TD2-M;the second receive time=RD1-M;and wherein the calculating the range delay further comprises calculating a range delay value of: range delay value=(RD1M−TD1N−(TD2M−RD2N))/2. 4. The method for calculating the range delay of claim 2 wherein the calculating the range delay further comprises: calculating the range delay after the third service primitive is received at the upper layer associated with the first node. 5. The method for calculating the range delay of claim 1 further comprising: generating the first service primitive, the second service primitive and the third service primitive so that the first service primitive, the second service primitive and the third service primitive communicate between the lower layer and the upper layer using standardized commands and parameters. 6. The method for calculating the range delay of claim 1 further comprising: determining when a first symbol of the second message is received a the lower layer of a first node, wherein the second receive time is based, at least in part on when the first symbol is received. 7. The method for calculating the range delay of claim 1 wherein the second message contains a velocity of the second node and wherein the calculating a range delay further comprises: calculating the range delay based, at least in part, on the velocity. 8. The method for calculating the range delay of claim 1 further comprising: sending a confirmation service primitive from the lower layer to the upper layer confirming the transmit service primitive has been received. 9. The method for calculating the range delay of claim 1 wherein the second message contains an accuracy of the first transmit time and wherein the calculating a range delay further comprises: calculating the range delay based, at least in part, on the accuracy. 10. The method for calculating the range delay of claim 9 wherein the accuracy represents a standard deviation. 11. The method for calculating the range delay of claim 1 further comprising: processing the first service primitive in an upper layer that is above the International Organization for Standardization's (ISO) Open Systems Interconnection (OSI) model's data link layer. 12. The method for calculating the range delay of claim 1 wherein the determining at the lower layer the second receive time further comprises: determining the second receive time at a lower layer that is lower than the International Organization for Standardization's (ISO) Open Systems Interconnection (OSI) model's network layer. 13. The method for calculating the range delay of claim 1 further comprising: sending the first service primitive with a first transaction sequence number that uniquely identifies the first service primitive; andsending the second service primitive with a second transaction sequence number that uniquely identifies the second service primitive. 14. A method for determining a range delay between two radios comprising: transmitting from a lower layers in a first radio one or more wireless messages to a second radio;receiving at the lower layers in the first radio one or more wireless messages from the second radio;sending one or more service primitives from the lower layers in the first radio to a higher layers associated with the first radio, wherein the one or more service primitives contain one or more message parameters of the wireless messages transmitted to the second radio and the one or more message primitives of the wireless messages received from the second radio;and calculating a range delay in the upper layer device based, at least in part on the message parameters;sending the one or more service primitives from the lower layers in the first radio to the higher layers associated with the first radio using a standard service primitives with standard primitive parameters;transmitting the service parameters with a standard primitive parameters from a plurality of different radios with a plurality of different types of lower layers to the upper layers of the first radio, wherein the service parameters with the standard primitive parameters include a plurality of radio parameters;tracking each of the plurality of different radios based, at least in part, on the radio parameters. 15. The method for determining the range delay between two radios of claim 14 wherein the generating one or more service primitives further comprises: routing the one or more service primitives through a standard network serviced access point (NSAP), wherein the NSAP allows different lower layer devices in other different radios to communicate through the standard NSAP to the higher layer device. 16. The method for determining the range delay between two radios of claim 14 further comprising: sending at least one service primitive from the higher layers to the lower layers in the first radio to cause the lower layers to transmit one or more wireless messages. 17. The method for determining the range delay between two radios of claim 14 further comprising: operating the lower layer device below the International Organization for Standardization's (ISO) Open Systems Interconnection (OSI) model's network layer.