Patent ID: 7512077
Filing Date: 2009-03-31
Classification: H04L

Abstract:
1. A method for compensating for independent clocks in relayed modem communications comprising: receiving data packets from a first network device, forwarded over a packet-based network, at a second network device, the data packets representing data transmitted in a first modulated signal from a first modem to the first network device, the first modulated signal including symbols associated with a first symbol rate based on a first clock; placing data derived from the data packets into a queue in the second network device; generating a second modulated signal at the second network device for transmission to a second modem, the second modulated signal being generated using data retrieved from the queue, the second modulated signal including symbols associated with a second symbol rate based on a second clock; obtaining at least one queue size measurement associated with data placed in the queue in the second network device; and effectively adjusting the second symbol rate, based on at least one queue size measurement associated with data placed in the queue in the second network device.