Selecting access nodes for broadcast

摘要

In systems and methods of selecting access nodes for broadcast, signal strength metrics are received from a plurality of wireless devices, wherein the signal strength metrics are based on signals received by the plurality of wireless devices from a plurality of access nodes. A first signal strength criteria is determined for each of the wireless devices based on the received signal strength metrics, and wireless devices for which the first signal strength criteria meets a threshold are selected from among the plurality of wireless devices. A second signal strength criteria is determined for each of the plurality of access nodes. A minimum number of the access nodes is selected wherein the second signal strength criteria meets the threshold for each of the selected wireless devices, and a multicast transmission is transmitted from the selected access nodes to the selected wireless devices.

主权项

1. A method of selecting access nodes for broadcast, comprising:
receiving signal strength metrics associated with a plurality of access nodes and determining, based on the received signal strength metrics, a first signal strength criteria for each of a plurality of wireless devices; selecting, from the plurality of wireless devices, those wireless devices for which the first signal strength criteria meets a first signal strength threshold; determining, based on the first signal strength threshold, a second signal strength criteria for each of the plurality of access nodes and selecting, from the plurality of access nodes, a minimum number of access nodes that meet the first signal strength threshold and the second signal strength criteria; transmitting a multicast transmission from the selected access nodes to the selected wireless devices; detecting, based on the received signal strength metrics, a change in the selected wireless devices that requires re-selection of the access nodes and re-determining the first signal strength criteria for each of the plurality of wireless devices; re-selecting those wireless devices for which the re-determined first signal strength criteria meets a second signal strength threshold; and re-determining, based on the second signal strength threshold, the second signal strength criteria and re-selecting, from the plurality of access nodes, the minimum number of access nodes that meet the re-determined second signal strength threshold and the second signal strength criteria.