Abstract: Techniques described herein enable store-and-forward systems to hold data at source node (e.g., service platform) until they can be provided to the destination node e.g., user device). In other words, data can be buffered at the source node until the destination node is “online,” and the establishment of a connection between the destination node and the intermediate node can trigger the retrieval of this data from the source node by the intermediate node. Additional techniques may be implemented to ensure the data connection between the intermediate node in the destination node does not expire while data is being communicated from the source node to the intermediate node.

Abstract: Techniques described herein enable store-and-forward systems to hold data at source node (e.g., service platform) until they can be provided to the destination node e.g., user device). In other words, data can be buffered at the source node until the destination node is “online,” and the establishment of a connection between the destination node and the intermediate node can trigger the retrieval of this data from the source node by the intermediate node. Additional techniques may be implemented to ensure the data connection between the intermediate node in the destination node does not expire while data is being communicated from the source node to the intermediate node.

Abstract: A target handset in a wireless communication network receives a PTT call announce message that is broadcast over a plurality of base stations without first sending a page message to precisely locate the target handset. The plurality of base stations cover a geographic region in which the target handset is expect to be located. Accordingly, the call setup delay introduced by first broadcasting a page message to precisely locate the target handset is eliminated. The additional burden on the network to broadcast the larger announce message is negligible because the bandwidth available in the forward common control channel (“FCCCH”) is sufficient to handle the larger message with no degradation to the network. Additionally, the announce message can be streamlined to reduce its data size and thereby minimize any additional burden on the network.

Abstract: A requesting handset in a wireless communication network sends a call message requesting a push-to-talk connection with a target handset. In response, a push-to-talk server sends a connection status message to the requesting handset. The connection status message is sent to the requesting handset in a control channel such as the forward common control channel. The requesting handset indicates to the caller that the connection has been made with the target handset, turns on the audio channel, and buffers any audio received from the caller until the traffic channel has been established. Once the traffic channel is established, any buffered audio is sent over the traffic channel and the push-to-talk call ensues.

Abstract: A target handset in a wireless communication network receives a PTT call announce message that is broadcast over a plurality of base stations without first sending a page message to precisely locate the target handset. The plurality of base stations cover a geographic region in which the target handset is expect to be located. Accordingly, the call setup delay introduced by first broadcasting a page message to precisely locate the target handset is eliminated. The additional burden on the network to broadcast the larger announce message is negligible because the bandwidth available in the forward common control channel (“FCCCH”) is sufficient to handle the larger message with no degradation to the network. Additionally, the announce message can be streamlined to reduce its data size and thereby minimize any additional burden on the network.

Abstract: A requesting handset in a wireless communication network sends a call message requesting a push-to-talk connection with a target handset. In response, a push-to-talk server sends a connection status message to the requesting handset. The connection status message is sent to the requesting handset in a control channel such as the forward common control channel. The requesting handset indicates to the caller that the connection has been made with the target handset, turns on the audio channel, and buffers any audio received from the caller until the traffic channel has been established. Once the traffic channel is established, any buffered audio is sent over the traffic channel and the push-to-talk call ensues.