Predictive caching and tunneling for time-sensitive data delivery to roaming client devices

摘要

Techniques are provided for delivering data to a wireless client device in a wireless local area network via a plurality of access point devices as the wireless client device roams from one access point device to another. A wireless client device receives data communications (i.e., traffic) via a first wireless access point device in the wireless local area network. An impending roam of a wireless client device is detected. A set of one or more candidate wireless access point devices other than the first wireless access point device is determined to which the wireless client device may potentially roam. The one or more wireless access point devices in the set are assigned to a multicast group, and the traffic is sent to the multicast group.

主权项

1. A method comprising:
detecting an impending roam of a wireless client device that receives data communications via a first wireless access point device in a wireless local area network; determining a set of one or more of wireless access point devices other than the first wireless access point device to which the wireless client device may potentially roam; assigning the one or more wireless access point devices in the set to a multicast group; sending the data communications to the multicast group; and sending flow context information to each of the wireless access point devices that enables the wireless access point devices in the set to start accepting and buffering data for existing active flows to the wireless client device.