Dynamic transport channel synchronization

摘要

The present invention relates to a method of, and device in the form of a radio access network supervising entity for, adapting to delay in a communication link established between the radio access network supervising entity and at least one radio base station communicating with a mobile terminal. The method comprises associating a target Connection Frame Number (CFN) to each transmitted data frame, said target CFN being calculated by offsetting an expected CFN with a counter value corresponding to a current communication link delay, repeatedly determining delay of the communication link, and adapting to the delay of the communication link by adjusting transmission time of the transmitted frame, and/or adjusting the target CFN of the transmitted frame, said target CFN being calculated by offsetting the expected CFN with a counter value corresponding to a determined new delay.

主权项

1. A method at a radio access network supervising entity, of adapting to delay in a communication link established between the radio access network supervising entity and at least one radio base station communicating with a mobile terminal, the method comprising:
associating a target Connection Frame Number (CFN) to each transmitted data frame, said target CFN being calculated by offsetting an expected CFN with a counter value corresponding to a current communication link delay associated with a first communication link between the radio access network supervising entity and a first radio base station communicating with the mobile terminal; determining delay of the first communication link; adapting to the delay of the first communication link by adjusting transmission time of the transmitted data frame or adjusting the target CFN of the transmitted data frame, said target CFN being calculated by offsetting the expected CFN with a counter value corresponding to the determined delay; establishing a second communication link between the radio access network supervising entity and a second radio base station; determining delay for each of the first and second communication links; identifying a greatest delay from the determining of the delay of each of the first and second communication links; and adapting delay of each of the first and second communication links by advancing the transmission time of the transmitted data frame to reflect the greatest delay or by advancing the target CFN to reflect the greatest delay.