Patent ID: 8195187
Filing Date: 2012-06-05
Classification: H04J,H04W

Abstract:
1. A method for exchanging digital information using mobile access terminals in a wireless network, the method comprising: transmitting packets over a first traffic channel, established between a first mobile access terminal and a first radio network controller, via a first radio node without passing through a second radio network controller, the first and second radio network controllers comprising first and second server cards, respectively, the first server card configured to perform signaling between the first radio node and the first radio network controller; transmitting packets over a second traffic channel, established between a second mobile access terminal and the second radio network controller, via a second radio node without passing through the first radio network controller, the second server card configured to perform signaling between the second radio node and the second radio network controller; maintaining the first traffic channel between the first access terminal and the first radio network controller so that packets are received from, or transmitted to, the first access terminal on the first traffic channel via the second radio node; transmitting packets received from the first access terminal to an external network; detecting an overload condition of the first server card; upon detecting the overload condition, selecting a traffic channel served on the first server card for transfer to a target server card, the first server card selecting the target server card from a list of one or more target server cards provided by a central load tracker; and transferring the selected traffic channel to the target server card in one of the radio network controllers without dropping the selected traffic channel.