Consistent with the disclosed embodiments, a method for evaluating the number of mobile stations in a target group uses a processor to execute instructions to perform the method. The method may initiate a counting event using the processor. In response to the counting event, a counting request message may be transmitted over a first communication channel. The counting request message may comprise a code set. The code set may comprise a plurality of orthogonal codes. In response to the counting request message transmitted, receipt of a first counting response message over a second communication channel may be confirmed. The counting response message may comprise a first code. The first code, consistent with some embodiments, may comprise content corresponding to a portion of the code set. Based in part on confirmation of receipt of the counting response message, the number of mobile stations in the target group may be determined independent of a connection status of each mobile station.