Fault tolerant wireless communication systems and methods
AssigneeNextel Communications Inc.
InventorsHoward A. Seid, Amrit K. Chandra
Life of this patent
Estimating the term…
Abstract
Systems and methods for fault tolerant communication are provided. A base site is coupled to a central office via a channel service unit. The channel service unit is coupled to the central office via primary and secondary communications links. A first and second permanent virtual circuit couple the channel service unit to a wireless carrier core network. When there is a fault on the primary communication link or the primary permanent virtual circuit user network interface of an aggregator, the secondary communication link is established and the secondary permanent virtual circuit is activated. Communications are then routed to the wireless carrier core network via the secondary communication link and the secondary permanent virtual circuit.
Claims20
A system, comprising:
- a base transceiver station;
- a channel service unit coupled to the base transceiver station;
- an aggregator coupled to the channel service unit via a primary and secondary communication link;
- and
- a switch coupled to the aggregator via a primary and secondary permanent virtual circuit, wherein the secondary communication link is established, and the secondary permanent virtual circuit is activated, when the primary communication link fails, and wherein the aggregator is coupled between the channel service unit and the switch.
A method for communicating between a base site and a wireless carrier core network, the method comprising the acts of:
- forwarding, by a base site, communications over a primary communication link and a primary permanent virtual circuit to the wireless carrier core network;
- determining whether there is a fault on the primary communication link or the primary permanent virtual circuit user network interface of an aggregator;
- establishing a secondary communication link and activating an established secondary permanent virtual circuit when it is determined that there is a fault On the primary communication link or the primary permanent virtual circuit user network interface of the aggregator;
- and
- forwarding the communications over the secondary communication link and the secondary permanent virtual circuit when it is determined that there is a fault on the primary communication link or the primary permanent virtual circuit user network interface of the aggregator, wherein the secondary permanent virtual circuit uses an external bandwidth and path which was previously used by the primary permanent virtual circuit.
A method for providing a fault tolerant wireless communication network, the method comprising the acts of:
- coupling a channel service unit of a base site to an aggregator via a primary communication link;
- coupling the aggregator to a switch of a wireless carrier core network via a primary permanent virtual circuit;
- coupling the channel service unit of the base site to the aggregator via a secondary communication link;
- and
- coupling the aggregator to the switch of the wireless carrier core network via a secondary permanent virtual circuit, wherein the aggregator is coupled between the channel service unit of the base site and the switch.
Dependencies are inferred from the claim text.