| US 7,522,548 B2 | ||
| Providing presence information in a communication network | ||
| John M. Harris, Chicago, Ill. (US); Ronald T. Crocker, St.Charles, Ill. (US); Thomas B. Hart, West Dundee, Ill. (US); and Valentin Oprescu-Surcobe, Northbrook, Ill. (US) | ||
| Assigned to Motorola, Inc., Schaumburg, Ill. (US) | ||
| Filed on Dec. 08, 2004, as Appl. No. 11/7,567. | ||
| Prior Publication US 2006/0119882 A1, Jun. 08, 2006 | ||
| Int. Cl. H04H 20/71 (2008.01); H04J 3/16 (2006.01); H04L 12/58 (2006.01); H04B 7/00 (2006.01) | ||
| U.S. Cl. 370—312 [370/471; 455/412.2; 455/519] | 6 Claims |
| 1. A method of providing presence information, the method comprising:
designating, for a plurality of communication devices, a plurality of groups, and assigning each of the communication devices
to at least one of the groups;
preparing a communication having presence information corresponding to a status of the plurality of communication devices
in the at least one group;
determining first network infrastructure device serving a first group of the at least one group and a second network infrastructure
device serving a second group of the at least one group;
transmitting, in accordance with the communication interface, at a first pre-determined time for the plurality of communication
devices in the first group of the at least one group, the communication to the first network infrastructure device to be transmitted
from the first network infrastructure device to the first group of the at least one group wherein the first pre-determined
time is the same for the plurality of communication devices in the first group of the at least one group and transmitting,
in accordance with the communication interface, at a second pre-determined time for the plurality of communication devices
in the second group of the at least one group, the communication to the second network infrastructure device to be transmitted
from the second network infrastructure device to the second group of the at least one group wherein the second pre-determined
time is the same for the plurality of communication devices in the second group of the least one group and the first pre-determined
time is different from the second pre-determined time and wherein the first pre-determined time is coordinated with the second
predetermined time; and
receiving, in accordance with the communication interface, at a third pre-determined time for the plurality of communication
devices in the first group of the at least one group an update having presence information corresponding to the status of
the plurality of communication devices in the first group of the at least one group.
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