Abstract: A target mobile station (104) is operated in an automatic answer mode. At least one session invitation (106) is received at the target mobile station (104). The session invitation (106) requests that a user manually accept the session invitation (106) thereby, at least temporarily, overriding the automatic answer mode. A determination is made as to whether to manually accept the at least one session invitation (106).

Abstract: A method and computer program for initiating a message to a radio access network include steps of: (404) detecting a request to transmit a probe message from a transmitter over an access channel to a radio access network; (406) calculating a transmit power for the probe message; (408) checking a condition that may result in failure to receive the probe message over the access channel by the radio access network; and (410) when the condition is determined to be true, then (412) reducing a message length of the probe message to generate a shorter probe message; (414) recalculating the transmit power to send the shorter probe message; and (416) transmitting the shorter probe message over the access channel at the recalculated transmit power.

Abstract: Various embodiments are described to provide push to talk (PTT) talk permit notification (TPN) with less average delay, given a desired rate of falsing, than prior art systems can achieve. A first communication system device (e.g., 101, 121, or 161) determines (504) whether one or more conditions are present for a PTT call that decrease the likelihood of successfully establishing the call. If (506) one or more conditions are present or a querying delay is expected to be less than an acceptable delay amount, the first device queries (508) a second communication system device (e.g., 121, 161, 122, or 102) for an indication to proceed with a TPN for the call before providing the TPN. Otherwise, the first device provides (512) the TPN without waiting for an indication to proceed with the TPN from the second device.

Abstract: In the present technique of a call setup process, a short data burst packet is sent (106) in response to the target mobile unit being selected (104), which is followed by a call setup function being initiated (108) to establish a communication channel between a originator mobile unit and the target mobile unit as a response to the short data burst packet being sent.

Abstract: In the present technique of a transmission process, at least one portion of a data packet is sent (608) responsive to a first triggered relating to the data packet being detected (606), which is followed by a second trigger (628) that triggers at least one remaining portion of the data packet to be sent (630).

Abstract: A system and method transmits a data packet to a target mobile station (202) when the target mobile station is busy. The data packet is received at a packet function (PCF) (206). It is determined whether the target mobile station (202) is actively engaged in a session other than a data session. When the target mobile station (202) is engaged in a session that is something other than a data session, it is determined whether the data packet is small enough to be sent over the traffic channel to the target mobile station (202). The PCF (206) sends the data packet over the traffic channel to the target mobile station (202) when it is determined that the target mobile station (202) is actively engaged in the session other than a data session and the data packet is small enough to be sent over the voice channel.

Abstract: Communications are established between an originating mobile station (104) and a target mobile station (120) in an expedited manner. An initial short packet is transmitted from an originating mobile station (104) and the initial short packet is translated into an Internet Protocol (IP) packet. The IP packet is transmitted to a target Packet Control Unit (PCU) (116). An acknowledgment IP packet is responsively received from the target mobile station (120) via the target PCU (116) and a communication link is established between the originating mobile station (104) and the target mobile station (120).

Abstract: A system and method for establishing communication with a target mobile station (312) initiated in part by establishment of a traffic communication channel with a target mobile station (312). Responsive to establishing the traffic communication channel, a message is sent by the target mobile station (312) substantially immediately to a dispatch server (304) via the traffic communication channel. The message comprises information indicating acceptance of a push-to-talk (PTT) request.

Abstract: A server (101) designates and assigns each of a plurality of communication devices to at least one of a plurality of groups. The server (101) prepares a communication having presence information corresponding to a status of the communication devices in the group; determines network infrastructure device(s) serving the group; and transmits, at a pre-determined time, the communication to the network infrastructure device(s). A network infrastructure device (103a-c, 105a-f) receives the communication and transmits, as a common channel signal during the pre-determined time, a signal with the presence information. A communication unit (107a, 107b, 107c) receives an indication of the pre-determined time; transmits, at an interval proximate to the pre-determined time, a signal indicating the communication device's status; and receives, at the pre-determined time, the signal with the presence information.

Abstract: A communication system provides for an expedited response to an invitation to a Push-to-Talk (PTT) communication session from a terminating side of the communication system when a target mobile station (MS) is not currently available to participate in a PTT communication session by responding to a PTT session invitation prior to an expiration of a second, Paging timer and after a predetermined number of expirations of a first, Tbsreq9 timer or after a predetermined number of unsuccessful requests to page the target MS. In another embodiment of the invention, the communication system may further consider the contents of a downlink buffer of a terminating side Packet Control Function in determining whether and when to respond to an invitation to a PTT communication session, utilizing a third, TpagingBackoff timer in determining when to request a page of a non-responsive target MS.

Abstract: A system and method for reducing the transmission delay of messages sent through a network from a source mobile unit (112) to a destination mobile unit (114). Portions of a data message are received (202). The portions of the data message are decoded (204) and a type of the data message is determined from the decoded portions. Before the entire data message has been received, processing and service actions are performed as a result of receiving the data message (206) based at least in part upon the type of the data message.

Abstract: A communication device converts a bit stream to multiple symbols and provides encryption at a physical layer by shifting a phase of each symbol of the multiple symbols to produce multiple encrypted symbols. Each encrypted symbol of the multiple encrypted symbols is modulated with an orthogonal subcarrier to produce at least one modulated subcarrier and the at least one modulated subcarrier is then transmitted via a wireless link. On a receive side, a receiving communication device receives the transmitted, encrypted symbols and provides decryption at a physical layer by shifting a phase of each encrypted symbol in correspondence with the phase used to encrypt the symbol at the transmit side.

Abstract: A communication device converts a bit stream to multiple symbols and provides encryption at a physical layer by shifting a phase of each symbol of the multiple symbols to produce multiple encrypted symbols. Each encrypted symbol of the multiple encrypted symbols is modulated with an orthogonal subcarrier to produce at least one modulated subcarrier and the at least one modulated subcarrier is then transmitted via a wireless link. On a receive side, a receiving communication device receives the transmitted, encrypted symbols and provides decryption at a physical layer by shifting a phase of each encrypted symbol in correspondence with the phase used to encrypt the symbol at the transmit side.

Abstract: A system and method establishes a data session between a mobile device and a destination server. A radio traffic channel is established between the mobile device and a radio network. At least partially simultaneous to establishing the radio traffic channel, the radio network establishes a connection between the mobile device and the destination server.

Abstract: Various embodiments are described which can provide reduced PTT call setup times and a greater degree of service integration for PTT users. A PTT originator's MSC (171) notifies (205) the PTT server of a PTT session request before the originator (101) has the channel and data connection resources to send a PTT session request itself. This enables the PTT server (161) to trigger (207) the establishment of channel and data connection resources for the PTT target (102) before the originator is able to trigger the same by sending a PTT session request itself. Also, the target's MSC (172) notifies (221) the PTT server after the target responds to a page for the session, enabling the PTT server to indicate PTT session acceptance (223) on behalf of the target before the target has the channel and data connection resources to respond to a PTT session request.

Abstract: Various embodiments are described to address the need for improved SDB data delivery to mobiles. In general, an MS (101) will determine whether it expects to receive data that would be appropriate for delivery by SDB. If it does, then the MS, via messaging with a serving RAN (e.g., RAN-component BS 121), PCF (131), and PDSN (141), establishes a service instance and a traffic flow template (TFT) to be used to segregate data for delivery to the MS via SDB. The PCF and PDSN establish a tunnel associated with the service instance that will be used in accordance with the TFT for conveying data that is to be delivered to the MS via SDB.

Abstract: The present embodiments provide apparatuses, methods and systems for use in notifying a remote communication device when a local wireless device loses its wireless link. In some embodiments, a method detects when a wireless connection is lost with a first communication device, identifies a second communication device that is communicating with the first device, and notifies the second device of the lost link. In some implementations, the notification of the lost link is supplied while the method provides batch communications. Some embodiments provide voice communications, where a remote device is notified when a local device loses its wireless connection. The second device can be determined by querying a server. The notifying can include forwarding an in-band tone, and/or generating a real time protocol packet. In some embodiments, the loss of the link is detected through a radio access network, a packet control function, and/or a mobile switching center.

Abstract: A method (600) and apparatus (700) for reducing delay associated with a call set-up for a call between an originating communication unit (120) and a target communication unit (121-124) in a radio access system (RAS) (101) is described. A call is initiated with a target communication unit prior to a channel assignment. A first latency (411) between an initiation time and a time when the target is capable of receiving a notification of the call on a first channel (410) is estimated and a second latency (421) between the initiation time and a second time when the target is capable of receiving the notification on a second channel (420) is estimated. Addresses associated with the target can be sent to the radio access system on the first channel or the second channel based on the estimated first latency and the estimated second latency.

Abstract: A core network element in a communication system can serve to store information regarding a present communication location of a given communication unit that seeks to facilitate a wireless communication using one kind of wireless communication resource (such as a dedicated voice channel) via another kind of wireless communication resource (such as a shared data channel). Upon receiving an indication from a communication unit regarding a target communication unit, the core network element can also make a determination regarding the likely availability of that target communication unit. A corresponding message that corresponds to this likelihood of availability can then be returned to the communication unit (using, preferably, the previously stored communication location information to essentially target the use of system resources to effect delivery of this message). The communication unit, in turn, can use this preliminary indication to facilitate its own subsequent actions.

Abstract: A communication system is provided that transitions, or otherwise assures, that a queued origination or destination mobile station (MS) is in a Radio Environment Reporting (RER) mode. Based on Radio Environment Messages conveyed by the MS to a serving network when in an RER mode, the network is able to determine RF resource availability at an appropriate Base Station without having to first page the MS and is further able to consider whether the MS has roamed while queued. By not having to page the MS, delay is reduced relative to the prior art in setting up a call once it is determined that an RF resource may be assigned to the MS. Furthermore, less latency in involved for the network to place the MS into a Traffic state when transitioning from an RER mode than would be the case if the MS was dormant or in an Idle/Access state.