| US 7,466,981 B1 | ||
| Handing off a node from a first access point to a second access point | ||
| Hisham S. Abdelhamid, San Jose, Calif. (US); Carlos V. Laux, San Ramon, Calif. (US); Marcio Guidorizzi de Siqueira, San Jose, Calif. (US); Jennifer K. Walker, Jackson, Wyo. (US); and Kamaldip S. Toor, San Diego, Calif. (US) | ||
| Assigned to Cisco Technology, Inc., San Jose, Calif. (US) | ||
| Filed on Oct. 25, 2005, as Appl. No. 11/259,570. | ||
| Int. Cl. H04L 12/40 (2006.01) | ||
| U.S. Cl. 455—438 [455/436; 455/437; 455/439; 455/442; 455/443; 455/444; 370/310; 370/331; 370/332; 370/333; 370/334; 370/338] | 19 Claims |
| 1. A method for handing off a node from a first access point to a second access point, comprising:
facilitating communication between a node and a network using a first access point;
accessing a handoff rule of one or more handoff rules;
determining one or more handoff factors associated with the first access point and a second access point, a handoff factor
relevant in deciding whether to handoff from the first access point to the second access point;
applying the handoff rule to the one or more handoff factors by:
determining a difference between a first Received Signal Strength Indicator (RSSI) value and a second RSSI value, the first
RSSI value associated with the first access point, the second RSSI value associated with the second access point; and
initiating handoff of the node to the second access point if the one or more handoff factors satisfy the applied handoff rule
by:
initiating handoff of the node to the second access point if the difference satisfies an RSSI differential threshold, the
RSSI differential threshold comprising a first RSSI differential threshold if the first RSSI value is within a first range
of values, the RSSI differential threshold comprising a second RSSI differential threshold if the first RSSI value is within
a second range of values, the first range of values less than the second range of values, the first RSSI differential threshold
less than the second RSSI differential threshold.
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