Abstract: An apparatus and method for establishing a session in a communication network supporting multimedia group calls. A first step (202) includes determining streams for a multimedia group call by the service entity. A next step (204) includes providing an indicator of the resources required for at least one stream of the group call by the service entity. A next step (206) includes paging the subscriber unit with the indicator for the at least one stream of the group call by the service entity. A next step (208) includes ascertaining the capabilities and resources of the subscriber unit. A next step (210) includes establishing a channel for only those streams of the group call for which the capabilities and resources of the subscriber unit are sufficient with respect to the indicator for those streams.

Abstract: A method and apparatus for reducing latency when setting up a Push-to-Talk (PTT) session from a User Equipment (UE) in a WCDMA radio communication network. When a user opens a PTT application or accesses the contacts page, the UE obtains a radio bearer from the network. The UE may maintain the radio bearer until the session is requested by transmitting periodic Heartbeat messages to the network. The Heartbeat messages have a length sufficient to trigger the network to place the user terminal on a Dedicated Channel (DCH), and the time period between Heartbeat messages is short enough to prevent the UE from being removed from the DCH for inactivity. When the user presses the PTT button, a SIP INVITE message is immediately sent without delay.

Abstract: A half-duplex communication system is embodied in a push-to-talk cellular system such as a GPRS system. The system includes two or more terminals (1 A, 1 B, 1 C) one or more of which can operate in a hands-free mode. When in hands-free mode, a terminal (1 A) is offered the right-to-speak by a controller (11 A, 13 A, 15 A, 17 A) within the system without the need for a talk request from a user. This allows a hands-free user to participate safely in a communications session.

Abstract: A transcoder architecture and method for transcoding in land mobile radio (LMR) systems are provided. The LMR system includes a first communication site configured to communicate using a first LMR communication protocol and a second communication site configured to communicate using a second LMR communication protocol. The LMR system further includes a transcoder configured to receive LMR content from the first communication site communicated using the first LMR communication protocol and digitally convert the LMR content to the second LMR communication protocol to be communicated to the second communication site.

Abstract: A system, method, and wireless communication device that allow the transmission of secondary data in a group-communication data stream between wireless communication devices across a wireless communication network. The wireless communication device selectively transmits at least group-directed voice communication data to other members of a communication group, such as a push-to-talk (PTT) group, in a communication channel having a limited bandwidth thereof, and can selectively transmit secondary data in the same communication channel. A group-communication server preferably receives the voice communication data and secondary data and selectively transmits at least the voice communication data to other member wireless communication devices of the communication group.

Abstract: The present invention relates to a possibility of communicating emotional information between a first and a second portable equipment. A first portable equipment for communication in a wireless communication system comprises an input portion adapted to receive information input by a user, an editing portion adapted to edit settings of a second portable equipment in response to a user input and to generate corresponding setting information, and a transmitting portion adapted to transmit setting information generated by the editing portion to the second portable equipment in said wireless communication system.

Abstract: Provided are a system for establishing and managing a Push To Talk (PTT) over Cellular (PoC) session between PoC clients supporting various media types, a method thereof, and a User Equipment (UE) therefor. When a PoC client performing an Open Mobile Alliance (OMA) PoC multimedia call service supports a plurality of media types, and media types supported by PoC clients are not common, a PoC session can be established to support only media types set to be transmitted in a first response message after the session is established. In addition, a method of efficiently managing a session by updating the session when a newly supported media type is provided or when a recipient of an existing media type is changed is suggested.

Abstract: Systems and methods of setting up a push-to-talk call are provided. When a push-to-talk server receives a request for a push-to-talk call from an originating mobile station, the server sends a push-to-talk call notification to a destination mobile station identified in the request and starts a timer. Upon expiration of the timer the server determines whether the originating mobile station has a traffic channel for the push-to-talk call.

Abstract: A user information management unit of a terminal generates a management number for respective users. A terminal to terminal communication unit communicates with another terminal through ad hoc communication, acquires a unique user ID set for the other user, and stores the user ID in a friend information storing unit. The data generated in a data generation unit is transmitted to a server from a sending unit along with a destination user ID selected from user IDs stored in a friend information storing unit. A reception unit in the server stores the transmitted data in a data storing unit for each destination user ID. When the server receives a connection request from a terminal, a connecting user information acquisition unit in the server identifies a user ID of a connection origin and a data retrieving unit transmits the data to the terminal by retrieving a data storing unit based on the user ID, indicating the user requested for the connection as a destination.

Abstract: Apparatus, methods, and systems are disclosed for pairing a first wireless device with a second wireless device and establishing an identifier. The first wireless device transmits to the second wireless device from the first wireless device with the identifier. The first wireless device shares the identifier with a third wireless device. This allows the third device to transmit to the second wireless device appearing as the first wireless device. The first wireless device stops transmitting while the third wireless device transmits. Since the third wireless device used the identifier for the first wireless device, the second wireless device believes is communicating with the first wireless device.

Abstract: Systems and methods are provided for controlling use of uplink random access channels (RACHs) based on multi-dimensional subscriber classification. These systems and methods are useful in cellular communication networks that implement, for example, a public safety cellular system.

Abstract: A system and method for enhancing the provisioning and functionality of wireless or portable devices, and more particularly a charging device configured to bi-directionally communicate to a database through the Internet or a private network to configure, update, and provision a wireless portable device while charging the portable or wireless device. Additionally, a system and method for alerting a user that the portable or wireless device requires a programmable action.

Abstract: An arrangement and method in a wireless communication network provides users with full control of service management, defines how a user can enter or leave services, and defines dependencies between services. A mobile terminal initiates establishment of a group and creates a unique groupID. The terminal sends invitations to other terminals to join the group and includes the unique groupID and a service feature tag for a desired service. The terminal will not request a service if it is incompatible with a service already running. Terminals that receive invitations store the groupID and service feature tags. These parameters are used to send acceptances or rejections, and to join later or leave a service.

Abstract: Techniques are described for providing location-based information and functionality to people and computing devices in various ways. In at least some situations, the techniques include enabling multiple people in a common geographic area to interact in various ways, such as via devices capable of communications (e.g., cellular telephones, computing devices with wired and/or wireless communications capabilities, etc.). In addition, the techniques include enabling the creation and maintenance of location-based virtual groups of users (also referred to as “clouds”), such as for users of mobile and/or fixed-location devices. Such clouds may enable various types of interactions between group members, and may be temporary and/or mobile.

Abstract: A method for providing a push-to-talk proxy media service includes receiving a plurality of monitored push-to-talk communication streams over a high bandwidth connection and mixing the plurality of monitored push-to-talk communication streams into a mixed communication stream. The method also includes transmitting the mixed communication stream to a user endpoint over a low bandwidth connection.

Abstract: Apparatus and method for reducing collisions on an enhanced access channel in a high bandwidth wireless network during a push-to-talk (PTT) communication between a plurality of user devices. A random delay field is introduced to a set of access parameters and the random delay is generated at each user device when the user devices are ready to transmit an access probe through the enhanced access channel to a base station. At the end of the random delay, the user devices send the access probe through the enhanced access channel to the base station. A maximum random delay field may be set by the base station.

Abstract: Disclosed is a method for enabling a terminating-side PoC client to open a PoC session by using a pre-established session, and to maintain the pre-established session when the terminating-side PoC client terminates the open PoC session, and a PoC system and a PoC user equipment (UE) for implementing the same. To this end, a REFER BYE message is used to terminate the PoC session while keeping the pre-established session maintained. The REFER BYE message must include information, such as pre-established session parameter information, a session ID, etc. In order to obtain the session parameter information, when the PoC session is opened by means of the pre-established session, a specified condition is determined in the terminating-side PoC client and a PoC server, and the pre-established session parameter information is stored in each PoC client and a PoC server acting as a participating PoC function according to a result of the determination.

Abstract: The present invention provides a radio node apparatus, a multi-hop radio system and a multi-hop radio system constructing method, capable of constructing a tree type multi-hop radio system in which mutual radio nodes determine a radio node which becomes a root node of a tree in an autonomous manner and the root node is set as a root in an autonomous manner.

Abstract: A relay device for multicast communications. The relay device transmitting a user data packet, containing a content, in which to set a multicast address associated with the content, to a plurality of base stations belonging to a same zone in order to wirelessly transmit the content substantially simultaneously from the plurality of base stations, comprises a storing unit storing information indicative of a multicast group in which the mobile terminal participates together with information about the zone to which the base station performing wireless communications with the mobile terminal belongs, and generates a query packet for checking if the mobile terminal continues to participate in the multicast group stored therein, and transmits the user data packet containing the query packet to each of the base stations belonging to the same zone.

Abstract: A system for storing and broadcasting PoC sessions includes: a message storing module, adapted to receive a media stream in a session, into the media stream into a pattern storable by the message storing module, and store the media stream to the message storing module; read the message from the message storing module, convert the message into a media stream, and send the media stream for participating in the session; and a gateway transfer module. A method and an apparatus for storing and broadcasting PoC sessions are also provided. The present invention enables storing and broadcasting of PoC sessions at lower cost.

Abstract: Provided are a group control method for providing a machine type communication (MTC) service, and a mobile communication system using the method. The group control method includes categorizing one or more MTC devices into one or more MTC groups, assigning MTC group identifiers to respective MTC groups, setting MTC radio network temporary identifiers (MTC RNTIs) according to the MTC group Identifiers, and using the MTC_RNTIs for addressing the MTC devices belonging to the respective MTC groups.

Abstract: Methods and means provide for handling wireless signal sessions. A failure in wireless communication between a wireless device and a supporting wireless system is detected. The wireless signal session is preserved in a hold state for a limited time. The wireless system attempts to reestablish communication with the wireless device by way of one or more resources of the wireless system prior to the expiration of hold period. Reestablished communication can involve another communications tower or other aspects of the wireless system. In one or more embodiments, other wireless devices are accessed and serve to daisy chain wireless communications between the wireless device and wireless system until direct communications can be reestablished.

Abstract: Restriction on call connections is controlled by grouping a plurality of terminals. One or more groups each including one or more terminals are provided. Each of the one or more groups is associated with the maximum number of calling terminals and a group restriction relaxing ratio indicating a relaxing degree of restriction with respect to a predetermined normal restriction ratio. Restriction on a call connection of a terminal belonging to a group is controlled on the basis of a group restriction ratio assigned to the group when the number of terminals being making phone calls is less than the maximum number of calling terminals that is provided for the group. The group restriction ratio is calculated using the predetermined normal restriction ratio and the group restriction relaxing ratio associated with the group.

Abstract: A system, method, and computer program for providing a greater reliability for a direct-communication, such as push-to-talk communication, being bridged between members of a communicating group of wireless telecommunication devices. Each wireless telecommunication device, such as a cellular telephone or PDA, of a plurality periodically informs a group communication server of the presence of that wireless telecommunication device on the wireless telecommunication network such that upon receipt of a request from a wireless telecommunication device to bridge a direct communication, the group communication server will attempt to bridge the requested direct communication with the target set of wireless telecommunication devices only if at least one of the wireless telecommunication devices of the target set has indicated its presence on the wireless telecommunication network.

Abstract: A method for transmitting and receiving a Multimedia Broadcast/Multicast Service in a mobile communication system. The mobile communication system transmits the same service in different streams by having first bearer information and a second bearer information for the same service. The mobile terminal effectively receives the MBMS service by receiving second bearer information based on the first bearer information received through a downlink control channel.

Abstract: The present disclosure discloses a method for implementing a Push to talk over Cellular (PoC) service and a PoC gateway so as to shorten the process for a terminal to implement a PoC service. The method includes: receiving a request from a first terminal for setup of a session with a second terminal; sending a registration request to an IP Multimedia Subsystem (IMS) core network after receiving the session setup request; receiving a registration success response from the IMS core and sending the session setup request to a PoC server, which forwards the request to the second terminal; receiving a session setup success response from the second terminal via the PoC server; and sending the session setup success response to the first terminal. The present disclosure also discloses a PoC gateway. With the present disclosure, the application of the PoC service will be wider.

Abstract: The improved vehicle crew communication system provides an increase in the number of wireless headsets that can be used with one base station, an increase range from the vehicle for operation of said headsets, full duplex operation communication over digitally encrypted DECT protocol links from one base station to a plurality of headsets, pairing of each headset to a particular base station, use of wireless technology inside and outside of the vehicle, automatic channel and link selection to transparently avoid interfered-with channels and links, removal of the need to manually select a channel on the headset, and the combination of the noise-cancelling microphone with noise threshold, noise attenuation, and line echo cancellation tuned to intercom parameters.

Abstract: A wireless communication device declares one of a plurality of extended instant messaging states and transmits the declared states to a presence information server. Declared extended instant messaging states for destination devices are received, and an enhanced instant message based on declared extended instant messaging states is generated.

Abstract: Radio devices (31 to 43) receive a prescribed number of Hello packets from each of n radio devices existing within one hop from each radio device, detects six pairs of maximum and minimum values MAX[1] and MIN[1] to MAX[6] and MIN[6] based on the plurality of reception signal strengths of the plurality of received Hello packets, detects two adjacent maximum values having the largest difference among six pairs of maximum and minimum values D_MAX[1] and D_MIN[1] to D_MAX[6] and D_MIN[6] when the six maximum values MAX[1] to MAX[6] are in descending order, and determines the average of two minimum values corresponding to the detected two maximum values as a threshold. The radio devices (31 to 43) each produce a routing table including routes having reception signal strengths equal to or more than the threshold.

Abstract: Temporarily selecting a TDMA timeslot by a radio communication device to thereby allow the radio communication device to communicate, through at least one repeater station, with a talkgroup of other radio communication devices is disclosed. The radio communication device has an assigned default timeslot for communicating with the talkgroup. The radio communication device determines if the default timeslot is available for the radio communication device to communicate with the talkgroup and searches for an available timeslot, when the default timeslot is unavailable. The radio communication device temporarily selects the available timeslot as a temporary selected group timeslot for the talkgroup.

Abstract: A method and apparatus is provided for establishing communication pathways between infrastructure devices in a wide area communication network prior to transmission of a group message packet by a source wireless communication device (WCD). In one implementation, the infrastructure devices (IDs) can include a home ID of the source WCD, a first ID and a second ID. A home steward module (HSM) of the source WCD generates a distribution list (DL) for communications from the source WCD to a first communication group (CG), and communicates it to an envoy packet duplicator module (EPDM) located at the first ID. The first CG includes, for example, a first destination WCD. A first network socket of the EPDM is communicated from the HSM to a second envoy module (located at the second ID) for the first destination WCD. The HSM maps a second network socket for the second envoy module to an identifier of the first destination WCD, and communicates this mapping to the EPDM.

Abstract: Disclosed is a method for identifying a plurality of moving tags by using a plurality of Radio Frequency Identification (RFID) readers. The technology of the present invention efficiently identifies multiple moving tags to thereby improve the identification rate and reading speed of an RFID system and increase the throughput of the RFID system. The method for identifying a plurality of moving tags by using a plurality of Radio Frequency Identification (RFID) readers includes the steps of: a) grouping the multiple tags into a predetermined number of tag groups; b) allocating the tag groups to the RFID readers respectively; and c) identifying tags of each allocated tag group in each RFID reader.

Abstract: A transmission source device transmits a test signal to a transmission destination device and a transmitting device by wireless communication. The transmission destination device and the transmitting device add to a received test signal an identification number thereof and a receiving time and return the data-added test signal to the transmission source device. The transmission source device determines a communication route with a shortest communication time based on the received data-added test signal. The transmission source device transmits logic-circuit update data to the transmission destination device via the determined communication route.

Abstract: The present invention relates to a method for obtaining group information by an invited user in a Push-to-Talk over Cellular (PoC) session. The method comprises: sending, by a PoC client where a user initiating the session is located, a session request message carrying information about the user initiating the session and the session group member information to a PoC server; and sending, by the PoC server, the session request message carrying the information about the user initiating the session to a PoC client where the invited user is located. The PoC server sends session group member information to the PoC client where the invited user is located, so that the invited user is able to know the session group member, or refer to the session group member information to determine subsequent operations. The present invention has also disclosed a PoC system.

Abstract: A device for wirelessly communicating a service to user equipment is provided. The device includes a transmitter, a receiver, and a processor. The processor is programmed to promote the transmitter polling to determine whether user equipment desire a service and responsive to receiving, via the receiver, at least one user equipment request for the service, the processor programmed to promote the transmitter providing a point-to-multipoint (PTM) broadcast of the service.

Abstract: A SIP server 200 according to a present invention includes: a judgment unit 205 configured to specify an application executed by a mobile station transmitting INVITE (halfway participation) on the basis of INVITE (halfway participation) received from the mobile station, and to judge whether an application which is being executed in the group call (active application) matches the application executed by the mobile station transmitting INVITE (halfway participation); and a SIP information transmitter 206 configured to notify the mobile station transmitting INVITE (halfway participation) of the active application when judged that the active application is different from the application executed by the mobile station transmitting INVITE (halfway participation).

Abstract: A process control system or other system includes multiple nodes that communicate using frequency-hopping patterns. Each node may operate using its own frequency-hopping pattern. Each node may also broadcast information identifying its frequency-hopping pattern to other nodes, such as any neighboring nodes. Each node may further receive information identifying the frequency-hopping patterns of any neighboring nodes. The nodes may then operate in a non-synchronized manner and use the frequency-hopping patterns of neighboring nodes to communicate. For example, each node may use the identified frequency-hopping pattern of a neighboring node to synchronize with and communicate data to the neighboring node. In this way, the nodes need not maintain synchronization at all times during operation. Also, different nodes may use different frequency channels at the same time, helping to increase the bandwidth available for wireless communications.

Abstract: A method an system for establishing a multi-user communication session, having a session description, between terminals with incompatible media characteristics, in which users with terminals having incompatible media characteristics are invited to participate in the communication session. A transcoding session is set up for enabling transcoding between the incompatible media characteristics of the terminals based on information about the terminals of the users having accepted the invitation, this information comprising the media characteristics of the users' terminals. The session description is established according to the transcoding session and, during the communication session, media streams from the terminal of one user are transcoded according to the transcoding session and the transcoded media streams are transmitted according to the session description to the other users participating in the communication session, using the media characteristics of the terminals of those other users.

Abstract: A system, method, and media for providing group communication services to an ad-hoc group formed according to vicinity with other users of communication devices in a communication system. Communicating among a communication group of a plurality of wireless communication devices in a communication system includes forming the communication group including transmitting an invitation including group membership location criteria to join the communication group to the plurality of wireless communication devices. The group membership location criteria is evaluated at each of the plurality of wireless communication devices receiving the invitation and the communication group is formed by ones of the plurality of wireless communication devices that meet the group membership location criteria. Permission to transmit to others of the plurality of wireless communication devices of the communication group is granted to one of the wireless communication devices of the communication group.

Abstract: Aspects of mobile communication for establishing a receive-only group communication, such as a Push-to-Talk (PTT) call or multicast call with a plurality of wireless communication devices that are in a receive-only mode are disclosed. When a group call between wireless communication devices starts from an originating device, in one embodiment indicating a receive-only group with which a group call is to be established, one or more receive-only wireless communication devices are determined and invited to participate in the group call. The traffic channel to the receive-only wireless communication device is transitioned to a uni-directional, forward-only traffic channel such that media is provided from the originating wireless communication device to the receive-only wireless communication device via the uni-directional traffic channel.

Abstract: A communication device and method are presented. The device is in a network of devices of different groups. The device contains a push-to-talk (PTT) button, a channel selector, and a keyboard containing hard or soft keys. The channel selector selects an initial frequency at which to receive and transmit, dependent on the group to which the device belongs. The device transmits when the PTT button is pressed. If a multiple PTT function is activated by software in the device, at least some of the keys are used to select a new transmission frequency. The device receives at the initial frequency independent of the transmission frequency. The multiple PTT function can be activated by a dedicated soft or hard key or a key on the keyboard that serves multiple functions. The frequency selection provided by the keys is dependent on the channel and the device group.

Abstract: One illustrative technique is performed in a requesting terminal of a plurality of terminals of a communication group for a communication session delivered via a network. Each terminal has communication capabilities within the communication group, such that a currently-transmitting terminal in the communication group is given a transmit capability using a talk channel while all other terminals of the communication group have a receive capability. The requesting terminal, which is not the currently-transmitting terminal, receives a user input for selecting a responding terminal of the communication group for responding in the communication session. The requesting terminal then transmits, while the transmit capability is given to the currently-transmitting terminal, a request for the network to grant the responding terminal the transmit capability. The request includes an identification of the responding terminal.

Abstract: Personal short codes facilitate the establishment of unique, personalized codes for accessing network services and personalized distribution lists. Users can create individualized lists of personal short codes for desired network services. Services can reside within or outside of the wireless network. Messages having personal short codes can incorporate text routing capabilities to provide routing based on the text of a message. PSCs can be of any length or combination of alphanumeric characters. Personal short codes can be entered via a mobile device, such as a mobile telephone, PDA, or laptop, or via a web browser.

Abstract: System and method for efficiently managing communication channel assignments within talkgroups having dual mode communication units capable of operating on a first communication channel type and on a second communication channel type, and single mode communication units capable of operating only on the second communication channel type. If, at a base site, each of the communication units associated with a talkgroup is a dual mode communication unit, a call for that talkgroup is assigned to be broadcast using a channel of the first communication channel type. If, at least one of the communication units associated with the talkgroup at the base site is a single mode communication unit, the call for that talkgroup is assigned to a channel of the second communication channel type. As communication units roam between sites, channel assignments are continuously updated based on the types of communication units at each base site at any one time.

Abstract: A system to permit push-to-talk communications in an orthogonal frequency division multiplexed (OFDM) communication network. Individual wireless communication devices that are part of a Group Call are assigned the same set or sets of OFDM tones for a downlink timeslot. Because each wireless communication device receives the same set of tones, each device will receive a communication simultaneously. The assigned OFDM tones need not be contiguous within a block of available tones. Because a large number of OFDM tones are available, the concept may be extended to a large number of groups that each separately support a Group Call function.

Abstract: The present invention provides a method of switching a number of wireless devices to a common channel. The method comprises automatically broadcasting location coordinates for an initiator wireless devices to the other wireless devices in response to receiving an initiate switching message comprising the location coordinates from the initiator wireless device; automatically determining the distance between each of the other wireless device and the initiator wireless device in response to receiving respective location based information from the other wireless devices; and transmitting an instruction to switch to the common channel to the initiator wireless device and the other wireless devices within a predetermined distance of the initiator wireless device.

Abstract: An embodiment of the present invention uses estimates of delay spreads of transmissions from user equipments (UEs) to a NodeB to determine a set of transmission parameters for the UEs reference signals. In an exemplary embodiment, the transmission parameters for reference signals include cyclic shifts. Thus, embodiments include a set of allocated cyclic shift values that are tailored to the delay spreads. The set of allocated cyclic shift values are used by a corresponding set of UE being served by a NodeB to form references signals. Each UE uses the allocated cyclic shift to form its reference signal by applying the cyclic shift to a modified reference sequence. The modified reference sequence can be generated from a Constant-Amplitude-Zero-Auto Correlation (CAZAC) sequence. The set of allocated cyclic shift values can be updated periodically to account for changes of delay spreads, which can be caused by physical movements of the set of UEs.

Abstract: A group communication method in which a communication terminal not participating in the group communication can newly participate in the group communication even while the group communication is being carried out is realized.

Abstract: In one embodiment, a method includes initiating a dynamic group call, detecting a call alert, and identifying a user system responsible for the call alert. The dynamic group call includes at least one original participant, and is initiated such that an ability to automatically add at least one new participant to the dynamic group call is enabled. Identifying the user system includes obtaining an indicator from the call alert. The indicator is associated with the user system. Finally, the method includes automatically adding the user system to the dynamic group call.

Abstract: A method for providing interoperable communications with congestion management includes facilitating communications of a plurality of virtual talk groups. Each virtual talk group comprises a plurality of endpoints of different communication networks communicating using a respective communication channel. The method includes detecting, for a first virtual talk group of the plurality of virtual talk groups, a congestion event and, in response to detecting the congestion event, forming from the first virtual talk group one or more subgroups, each subgroup comprising at least two endpoints from the first virtual talk group. The method also includes assigning to each subgroup a respective alternate communication protocol for use by the plurality of endpoints of the subgroup.