WO2006105336A2 - System and method for distributing voip data packets in group communications among wireless telecommunication devices - Google Patents
System and method for distributing voip data packets in group communications among wireless telecommunication devices Download PDFInfo
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- WO2006105336A2 WO2006105336A2 PCT/US2006/011749 US2006011749W WO2006105336A2 WO 2006105336 A2 WO2006105336 A2 WO 2006105336A2 US 2006011749 W US2006011749 W US 2006011749W WO 2006105336 A2 WO2006105336 A2 WO 2006105336A2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/40—Support for services or applications
- H04L65/4061—Push-to services, e.g. push-to-talk or push-to-video
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2203/00—Aspects of automatic or semi-automatic exchanges
- H04M2203/20—Aspects of automatic or semi-automatic exchanges related to features of supplementary services
- H04M2203/2044—Group features, e.g. closed user group
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2203/00—Aspects of automatic or semi-automatic exchanges
- H04M2203/20—Aspects of automatic or semi-automatic exchanges related to features of supplementary services
- H04M2203/205—Broadcasting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/40—Connection management for selective distribution or broadcast
- H04W76/45—Connection management for selective distribution or broadcast for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/02—Data link layer protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/14—Backbone network devices
Definitions
- the present invention generally relates to data networks and voice-over- internet protocol (VoIP) data packets. More specifically, the present invention relates to a system and method for efficiently distributing VoIP media to very large and/or geographically dense ad-hoc dispatch calls, such as Push-to-Talk group communications, in a wireless telecommunication network.
- VoIP voice-over- internet protocol
- a wireless network the users of wireless communication devices communicate over an air-interface to a central computer. This may be done directly, as in the case of a wireless LAN in an office environment, or it may be done through cellular infrastructure equipment, as in the case of a wireless telephone application.
- a PTT communication connection is typically initiated by a single button-push on the wireless device that activates a half-duplex link between the speaker and each member device of the group and once the button is released, the device can receive incoming PTT transmissions once the button is released.
- the PTT speaker will have the "floor" where no other group member can speak while the speaker is speaking.
- a specific PTT group of recipient devices for the communicating wireless device is commonly set up by the carrier and the wireless devices themselves do not allow the modification of the group, i.e. to include or drop individuals from the group, or to purposely direct a communication to be received by any fewer members than the entire group.
- the typical PTT call involves two users who are rarely located within the same telecommunication sector such that communication and replication of the communication is propagated easily over the existing telecommunication infrastructure.
- a small but very important fraction of push-to-talk calls involve a larger number of call participants, some of whom may also be located within the same sector; public-safety disaster scenarios are one example.
- the maintenance of the PTT Communications within the group all located on the same telecommunication resource is difficult and inefficient.
- These systems will use "trunks" of the telephone network and standard channel allocation that devote individual circuits for each call participant, thus limiting system scalability.
- IP multicast a technique known as Internet Protocol (IP) multicast has been developed for use in wired IP networks.
- IP Internet Protocol
- applications can send one copy of each data packet and address it to a group of recipients that wish to receive the information generated by an application.
- This technique addresses data packets to a group of recipients rather than to individual recipients, and it relies on the network to forward the data packets only to "paths" that have a sub-network that needs the information, i.e., a sub-network having at least one recipient desiring the particular IP multicast.
- a subnetwork is a local broadcast network, such as an Ethernet LAN.
- VoIP Voice over IP
- a PTT voice communication is efficiently broadcast through Internet protocol data packets to other member devices of the PTT group.
- At least one communication server receives a single communication stream from a communicating wireless device, such as a PTT voice call, and creates a group communication to all wireless telecommunication devices of the designated group, with the broadcast of Internet protocol data packets (VoIP) containing the voice data of the communication stream to the wireless telecommunication devices of the receiving group that can receive and handle the packets, and otherwise sends the group communication via the standard telecommunication infrastructure.
- the communication server preferably utilizes the wireless network infrastructure to assist in generation and broadcast of the VoIP packets to the various wireless telecommunication devices.
- the system for broadcasting VoIP packets containing voice data to a group of wireless telecommunication devices includes a plurality of wireless telecommunication devices wherein each wireless telecommunication device is able to direct a single communication stream to a designated group of the plurality of wireless telecommunication devices, such as a PTT group, and at least one of the plurality of wireless telecommunication devices able to receive broadcast VoIP packets containing voice data. Also, the system includes a communication server that receives the single communication stream from a communicating wireless device and creates a group communication to all wireless telecommunication devices of the designated group, and causes the broadcast of VoIP packets to at least one wireless telecommunication device of the receiving group of the plurality of wireless telecommunication devices.
- the method for efficiently distributing VoIP packets containing voice data among a group of wireless telecommunication devices on a wireless network comprising the steps of: directing a single communication stream from a wireless telecommunication device to a designated group of a plurality of wireless telecommunication devices on a wireless network, the communication stream including voice data with at least one of the plurality of wireless telecommunication devices able to receive VoIP packets containing voice data, receiving the single communication stream from a communicating wireless device at a communication server, creating at the communication server a group communication to all wireless telecommunication devices of the designated group; and broadcasting VoIP packets to the wireless telecommunication device(s) of the receiving group of the plurality of wireless telecommunication devices.
- the system and method can therefore allow efficient broadcast of VoIP packets without flooding the wireless network with packets as it limits multicast transmissions to a specific geographic area having at least one capable receiving wireless telecommunication device.
- the system and method can use VoIP packets to conduct group communications within a very geographically-dense group of PTT devices without overburdening the wireless telecommunication resources, e.g. not having to use trunked telecommunication channels for each wireless device.
- the system and method can accordingly be implemented with non VoIP capable device in the same PTT group.
- Fig. 1 is a representative diagram of a wireless network with a designated PTT group of wireless telecommunication devices communicating with a group communication server and other computer devices across the wireless network.
- Fig. 2 is a representative diagram of one embodiment of a wireless network in a common cellular telecommunication configuration, having a series of group communication servers control communications between the wireless telecommunication devices of PTT group members.
- FIG. 3 is a block diagram illustrating the computer platform of the wireless telecommunication device with PTT capability and VoIP reception capability.
- Fig. 4 is a diagram of one embodiment of multicast groups for PTT communications across a traditional cellular infrastructure.
- Fig. 5 is a call-progress diagram for a PTT communication being initiated using an IP multicast to PTT group members able to receive the IP data packets.
- Fig. 6 is a diagram of another embodiment of multicast groups for PTT communications across a traditional cellular infrastructure using GRE Tunnels.
- Fig. 7 is a flowchart of one embodiment of the process executing on the group communication server to direct VoIP packets to the appropriate wireless devices of a designated PTT group on the wireless network.
- Fig. 1 illustrates the system 10 for broadcasting Internet protocol data packets containing voice data to a group of wireless telecommunication devices (target set 12) on a wireless network 20.
- the one or more wireless telecommunication devices are in a PTT group, such as the wireless telephone 14, smart pager 16 and personal digital assistant (PDA) 18, with other wireless telecommunication devices across a wireless network 20.
- PTT group such as the wireless telephone 14, smart pager 16 and personal digital assistant (PDA) 18, with other wireless telecommunication devices across a wireless network 20.
- PDA personal digital assistant
- each wireless telecommunication device 14,16,18 is capable of selectively directly communicating across the wireless communication network 20 with a target set 12 of one or more other wireless telecommunication devices with the plurality.
- the target set for cellular telephone 14 can all devices in the target set 12 or a subset thereof, such as pager 16 and PDA 18.
- the system 10 leverages the use of IP multicasting within a wireless operator's private wireless network 30 and supporting infrastructure to efficiently deliver VoIP based media for very large push-to-talk (or other similar services) calls defined in ad-hoc fashion.
- PTT calls can involve a very large number of call participants (several hundred) who can be scattered across an operator's wireless network 20 or who may all be located in a small number of sectors on the same network resources.
- a group communication server 32 selectively receives requests to bridge direct communications between the communicating wireless telecommunication device s 14,16,18 and the one or more other wireless telecommunication devices in the target set 12 designated for the communicating wireless telecommunication device.
- the communication server 32 then selectively bridges the requested direct communication, such as a PTT voice communication.
- the identity of the target set 12 is selectively available to the group communication server 32, such as being resident on the group communication server 32 or in a connected database 34, or possibly on another computer device, such as packet flow-control server 36 (as is common in network infrastructure).
- the system 10 therefore includes a plurality of wireless telecommunication devices (target set 12) wherein each wireless telecommunication device is able to direct a single communication stream to a designated group (target set 12) of the plurality of wireless telecommunication devices 14,16,18, and at least one of the plurality of wireless telecommunication devices is able to receive broadcast Internet protocol data (VoIP) packets.
- the communication server 32 that receives the single communication stream from a communicating wireless device (such as wireless telephone 14) and creates a group communication to all wireless telecommunication devices of the designated group, such as PTT call.
- the communication server 32 causes the broadcast of Internet protocol data packets containing voice data to at least one wireless telecommunication device of the target set 12, either directly or through the use of other computer devices on the wireless network 20 or on the server-side LAN 30.
- the group communication server 32 can have an attached or accessible database 34 to store the group identification data for the wireless devices that another server 36 controls group communications for. It should be appreciated that the number of computer components resident on server-side LAN 30, or across the wireless network 20, or Internet generally, are not limited.
- the communication server 32 can broadcast only standard voice data packets, such as in CDMA, with other resources receiving the CDMA packets and creating VoIP packets, or other methods of packetizing data may be used as known in the art.
- the PTT communication broadcast can be voice data, application data, multimedia, or any form of computer data.
- the wireless telecommunication device such as wireless telephone 14, can itself send Internet protocol data packets to the communication server 32.
- Fig. 2 is a representative diagram of one embodiment of a wireless network in a common cellular telecommunication configuration, having a group communication server 32 control communications between the wireless devices of set group members (devices 70,72,74,76) in a PTT system.
- the wireless network is merely exemplary and can include any system whereby remote modules communicate over-the-air between and among each other and/or between and among components of a wireless network 20, including, without limitation, wireless network carriers and/or servers.
- a series of group communication servers 32 are connected to a group communication server LAN 50. Wireless telephones can request packet data sessions (such as CDMA) from the group communication server(s) 32 using a data service option.
- the group communication server(s) 32 are connected to a wireless service providers packet data service node (PDSN) such as PSDN 52, shown here resident on a carrier network 54.
- PDSN packet data service node
- Each PSDN 52 can interface with a base station controller 64 of a base station 60 through a packet control function (PCF) 62.
- PCF packet control function
- the PCF 62 is typically located in the base station 60.
- the carrier network 54 controls messages (generally in the form of data packets) sent to a messaging service controller ("MSC") 58.
- the carrier network 30 communicates with the MSC 32 by a network, the Internet and/or POTS ("plain ordinary telephone system").
- POTS plain ordinary telephone system
- the network or Internet connection between the carrier network 54 and the MSC 58 transfers data, and the POTS transfers voice information.
- the MSC 58 can be connected to one or more base stations 60.
- the MSC 58 is typically connected to the branch-to-source (BTS) 66 by both the network and/or Internet for data transfer and POTS for voice information.
- the BTS 66 ultimately broadcasts and receives messages wirelessly to and from the wireless devices, such as cellular telephones 70,72,74,76, by short messaging service (“SMS”), or other over-the-air methods known in the art.
- SMS short messaging service
- Cellular telephones and telecommunication devices such as wireless telephone 14, are being manufactured with increased computing capabilities and are becoming tantamount to personal computers and hand-held PDAs. These "smart" cellular telephones allow software developers to create software applications that are downloadable and executable on the processor of the wireless device.
- the wireless device such as cellular telephone 14, can download many types of applications, such as web pages, applets, MIDlets, games and stock monitors, or simply data such as news and sports-related data.
- the wireless device can directly connect with the other member of the set and engage in voice and data communication. However, all such direct communications will occur through, or at the control of, the group communication server 32.
- Fig. 3 is a block diagram illustrating one embodiment of the wireless telecommunication device being a cellular telephone 14 with a PTT button 78 that opens the direct communication to the target set 12 of devices.
- the wireless device 14 is also shown as having a graphics display 80 to the user of the wireless device 14.
- the wireless device 14 includes a computer platform 82 that can handle voice and data packets, and receive and execute software applications transmitted across the wireless network 20.
- the computer platform 80 includes, among other components, an application-specific integrated circuit ("ASIC") 84, or other processor, microprocessor, logic circuit, programmable gate array, or other data processing device.
- ASIC application-specific integrated circuit
- the ASIC 84 is installed at the time of manufacture of the wireless device and is not normally upgradeable.
- the ASIC 84 or other processor executes an application programming interface (“API") layer 86, which includes the resident application environment, and can include the operating system loaded on the ASIC 84.
- API application programming interface
- the resident application environment interfaces with any resident programs in the memory 88 of the wireless device.
- An example of a resident application environment is the "binary runtime environment for wireless" (BREW) software developed by Qualcomm® for wireless device platforms.
- BREW binary runtime environment for wireless
- the wireless device can be a cellular telephone 14, with a graphics display, but can also be any wireless device with a computer platform as known in the art, such as a personal digital assistant (PDA), a pager with a graphics display, or even a separate computer platform that has a wireless communication portal, and may otherwise have a wired connection to a network or the Internet.
- the memory 88 can be comprised of read-only or random-access memory (RAM and ROM), EPROM, EEPROM, flash cards, or any memory common to computer platforms.
- the computer platform 82 can also include a local database 90 for storage of software applications not actively used in memory 88.
- the local database 90 is typically comprised of one or more flash memory cells, but can be any secondary or tertiary storage device as known in the art, such as magnetic media, EPROM, EEPROM, optical media, tape, or soft or hard disk.
- the wireless telephone typically will open a full duplex channel for telecommunication, and in some instances, will communicate via a half-duplex channel, only being able to talk or receive a voice stream.
- the computer platform 82 also includes a communication interface 92 that includes a direct communication interface 94 that can open the direct communication channel from the wireless device.
- the direct communication interface 92 can also be part of the standard communication interface for the wireless device which ordinarily carries the voice and data transmitted to and from the wireless device.
- the direct communication interface 92 typically is comprised of hardware as is known in the art.
- the communication interface 92 further includes an IP packet handling interface 96 that can at least receive or receive and send VoIP over the wireless network 20. Alternately, the IP packet interface 96 can be attuned to a broadcast channel specifically designed for VoIP packet broadcast, and such channel is possibly outside the carrier channels of the wireless network 20.
- FIG. 4 is a diagram of one embodiment of multicast groups for PTT communications across a traditional cellular infrastructure.
- the wireless operator identifies a class of multicast groups addresses to devote PTT groups and thus create a IP Multicast Network 100.
- a location server 104 and dispatcher 104 are supported by multiple communication servers 106 to set up the multicasting channels across the network.
- the wireless operator's PTT location server 102 is configured to identify how to map any unicast IP address assigned to a wireless device, such as one wireless device in group 108, group 110 or single wireless devices 112 and 114, to a given PDSN 52 identifier.
- the PDSN 52 identified by the location server 102 is the PDSN 52 to which unicast traffic destined to the wireless telecommunication device will be routed.
- Each PDSN 52 is configured to statically maintain itself as a member in a subset of the multicast groups identified for providing efficient PTT services for very large ad-hoc groups.
- a PTT system provides point-to-multipoint voice service over commercial cellular infrastructure, such as CDMA, TDMA, GSM. Communication between endpoints takes place within virtual groups using a dispatch model wherein the voice of one talker is broadcasted to many listeners by the Dispatcher 104.
- a PTT System relies on a Group Call Server (GCS) to replicate the media and setup point-to-point communication links with each endpoint.
- GCS Group Call Server
- PIM Protocol Independent Multicast
- the present system can use Protocol Independent Multicast (PIM), which is a multicast routing protocol that runs over an existing unicast infrastructure.
- PIM provides for both dense and sparse group membership. It is different from other protocols, since PIM uses an explicit join model for sparse groups. Joining occurs on a shared tree and can switch to a per-source tree. Where bandwidth is plentiful and group membership is dense, overhead can be reduced by flooding data out all links and later pruning exception cases where there are no group members.
- the proposed design uses a statically configured IP-multicast network 100 having distribution trees are configured in a fixed manner by making the PDSNs 52 join a set of pre-configured multicast groups 108,110,112,114 statically, as shown in Fig. 4.
- the PDSN's 52 can either send periodic join messages for each of the PTT groups they are interested in, or alternately, static entries can be made in all the intermediate multicast routers.
- each PDSN (statically) subscribes to a (potentially overlapping) subset of available Multicast groups.
- the size of the Multicast address space reserved per PDSN 52 should be large enough to handle the expected number of large groups within the PDSN' s 52 geographical region.
- G be a function mapping a PDSN 52 to the corresponding multicast groups it is interested in. That is, G(PDSN 1 ) is the set of multicast groups PDSN 1 is a member of. G is a many-to-one mapping and G is known to the appropriate communication server 106.
- M be the function mapping between a wireless telecommunication device's IP address and the identifier of the PDSN 52 serving that wireless telecommunication device. For example, M(IP 1 ) returns the identifier of the PDSN 52 serving a wireless telecommunication device with IP 1 .
- This mapping is also known to the communication serverlO ⁇ , and can be deduced based on the knowledge of the set of IP addresses each of the PDSNs 52 can assign during a point-to-point (PPP) session.
- the communication servers 106 are consequently configured with a mapping between PTT group members and the serving PDSN 52 identifier.
- the Dispatcher 104 receives a PPT request from a originating wireless device, such as group device 114, and looks up the targets, say t ⁇ through t n .
- the dispatcher uses the mapping M to identify the set of PDSNs 52— say P 1 through P m serving each of the target wireless telecommunication devices. It should be noted that n > m.
- the appropriate communication server 32 assigns calls to the Multicast group(s) dynamically based on where participants are, and PDSN 52 subscription during call setup.
- the communication server 106 decides the following: Is this a large PTT group call (based on the parameter n)? Is this a dense PTT group call (based on the appropriate data for the targets, and potentially the maximum cardinality of the sets M(Pj), or max ⁇ I M(PO I ⁇ ).
- the communication server 106 then receives the set of multicast group addresses chosen for the PTT communication.
- the 233.0.0.0/8 block has been set aside for multicast use for entities with their own autonomous system number (ASN).
- the 239.0.0.0/8 block is administratively scoped for internal use only (like the 192.168.0.0/16 block in the case of unicast).
- These two multicast address blocks can be used within the carrier's private network, allowing the communication server 106 to use multicast address space up to around 32 million.
- Fig. 5 is a call-progress diagram for a PTT communication being initiated using an IP multicast to PTT group members able to receive the IP data packets.
- the "floor grant" or permission for the originating wireless telecommunication device is given after the PTT channel is verified as available and the multicast groups are selected.
- the existence of available PTT members for multicast can be determinative of the availability of the floor dependent upon the system configuration. For example, if the system determines that the PTT embers are geographically dense but multicast is not available, it can refuse the initial request or set up the standard PPP communications.
- call setup signaling can occur via a formal broadcast channel, as opposed to just a generic shared forward link channel such as the Control Channel. For example, in one extant telecommunications system, the system uses a Control Channel (CC) and a separate Broadcast Channel (BCH).
- CC Control Channel
- BCH Broadcast Channel
- FIG. 6 is a diagram of another embodiment of multicast groups for PTT communications across a traditional cellular infrastructure using Generic Routing Encapsulation (GRE) Tunneling.
- GRE is a standards-based tunneling protocol known in the art that can encapsulate a wide variety of protocol packet types inside IP tunnels, creating a virtual point-to-point link over an IP network. GRE tunneling allows separate networks to appear to be directly connected.
- traffic on the IP multicast network 120 is encapsulated in a GRE IP packet with a source and destination address that at least the communications servers 106 and the PDSN 122 recognize.
- Target group members 124, 126 and 128 typically do not need to recognize the GRE packets as the PDSN 122 has recreated the VoIP packets.
- Fig. 7 is a flowchart of one embodiment of the process executing on the group communication server 32 to direct VoIP packets to the appropriate wireless devices of a designated PTT group on the wireless network.
- a PTT communication request is received at the communication server 32, as shown at step 140, and a PTT group is determined for the incoming communication stream, as shown at step 142.
- the communication channel is granted to the requesting wireless telecommunication device as shown at step 148 and the incoming voice stream is received, as shown at step 150. Then a decision is made as to whether there are any members of the PTT group that can receive VoIP, as shown at decision 152. If none of the PTT group members can receive VoIP packets, then the process forwards to step 158 wherein the voice data stream is sent to the extant infrastructure (such as cellular infrastructure) to the broadcast to the PTT group members.
- the extant infrastructure such as cellular infrastructure
- the voice data stream is packetized into IP data packets, as shown at step 154, and then the VoIP packets are transmitted (such as to the PDSN 52) for ultimate broadcast tot eh members of the PTT group, as shown at step 156. Then the remaining voice data stream is sent to the extant infrastructure for transmission to the PTT group members as shown at step 158. If the system is embodied with the communication server 32 controlling other computer devices to assist in packetizing or data relay, then such other steps will occur in the process as would be apparent to one of skill in the art.
- the system 10 provides a method for efficiently distributing VoIP data packets among a group (target set 12) of wireless telecommunication devices on a wireless network 20 including the steps of directing a single communication stream from a wireless telecommunication device (such as wireless telephone 14) to a designated group of a plurality of wireless telecommunication devices (target set 12), with the communication stream including at least voice data.
- At least one of the plurality of wireless telecommunication devices is able to receive VoIP data packets, and thus the method further includes receiving the single communication stream from a communicating wireless device (wireless telephone 14) at a communication server 32, creating at a group communication to all wireless telecommunication devices of the designated group (target set 12), and broadcasting the VoIP data packets to at least the one wireless telecommunication device of the receiving group (target set 12).
- a communicating wireless device wireless telephone 14
- target set 12 creating at a group communication to all wireless telecommunication devices of the designated group (target set 12)
- broadcasting the VoIP data packets to at least the one wireless telecommunication device of the receiving group (target set 12).
- the method can further include the step of receiving the VoIP data packets at one or more of the plurality of wireless telecommunication devices 14,16,18 in the group.
- the step of directing a communication stream can include directing application data, multimedia, or other computer media to a designated group, or target set 12, of a plurality of wireless telecommunication devices.
- the method can further include the step of routing the voice data from the communication server 32 to another computer device on the wireless network 20 or on the server-side LAN 30, that converts the voice data in VoIP data packets for broadcast to at least one wireless telecommunication device of the group (target set 12).
- the method can also include the steps of determining at the communication server 32 the member wireless telecommunication devices (such as devices 14,16,18) able to receive broadcast VoIP data packets, and directing one or more intermittent communication devices, such as PDSN 52, to send VoIP data packets to those wireless telecommunication devices of the group that can receive VoIP data packets, with the one or more intermittent communication devices bridging communication streams between the communication server 32 and the group (target set 12) of wireless telecommunication devices.
- the member wireless telecommunication devices such as devices 14,16,18
- PDSN 52 directing one or more intermittent communication devices, such as PDSN 52, to send VoIP data packets to those wireless telecommunication devices of the group that can receive VoIP data packets, with the one or more intermittent communication devices bridging communication streams between the communication server 32 and the group (target set 12) of wireless telecommunication devices.
- the system 10 also includes an inventive wireless telecommunication device (such as wireless telephone 14 shown in Fig. 3) able to direct a single communication stream to a designated group of a plurality of wireless telecommunication devices (target set 12) accessible on a wireless network 20, wherein the wireless telecommunication device is further able to receive broadcast VoIP data packets (such as through VoIP interface 96) in addition communicating through a standard communication stream on the wireless network 20 to other wireless telecommunication devices on the wireless network 20, such as through communication interface 92.
- Another embodiment includes a program resident in a computer readable medium, where the program directs a wireless device having a computer platform to perform the inventive steps of the method.
- the computer readable medium can be the memory 88 of the computer platform 82 of the wireless telephone 14, or other wireless device, or can be in a local database, such as local database 90 of the wireless telephone 14. Further, the computer readable medium can be in a secondary storage media that is loadable onto a wireless device computer platform, such as a magnetic disk or tape, optical disk, hard disk, flash memory, or other storage media as is known in the art.
- a wireless device computer platform such as a magnetic disk or tape, optical disk, hard disk, flash memory, or other storage media as is known in the art.
- the method may be implemented, for example, by operating portion(s) of the wireless network 20 to execute a sequence of machine- readable instructions, such as wireless platform 82 and the communication server 32.
- the instructions can reside in various types of signal-bearing or data storage primary, secondary, or tertiary media.
- the media may comprise, for example, RAM (not shown) accessible by, or residing within, the components of the wireless network 20.
- RAM random access memory
- the instructions may be stored on a variety of machine-readable data storage media, such as DASD storage (e.g., a conventional "hard drive” or a RAID array), magnetic tape, electronic read-only memory (e.g., ROM, EPROM, or EEPROM), flash memory cards, an optical storage device (e.g. CD-ROM, WORM, DVD, digital optical tape), paper "punch” cards, or other suitable data storage media including digital and analog transmission media.
- DASD storage e.g., a conventional "hard drive” or a RAID array
- magnetic tape e.g., magnetic tape
- electronic read-only memory e.g., ROM, EPROM, or EEPROM
- flash memory cards e.g. CD-ROM, WORM, DVD, digital optical tape
- paper "punch” cards e.g. CD-ROM, WO
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephonic Communication Services (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
Claims
Priority Applications (7)
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JP2008504387A JP5259386B2 (en) | 2005-03-31 | 2006-03-31 | VOIP data packet in communication group in wireless telephone communication device |
CN2006800177787A CN101180899B (en) | 2005-03-31 | 2006-03-31 | System and method for distributing voip data packets in group communications among wireless telecommunication devices |
CA002602829A CA2602829A1 (en) | 2005-03-31 | 2006-03-31 | System and method for distributing voip data packets in group communications among wireless telecommunication devices |
BRPI0608949-6A BRPI0608949A2 (en) | 2005-03-31 | 2006-03-31 | system and method for distributing voip data packets in group communications among wireless telecommunications devices |
MX2007011797A MX2007011797A (en) | 2005-03-31 | 2006-03-31 | System and method for distributing voip data packets in group communications among wireless telecommunication devices. |
EP06740102A EP1869916A4 (en) | 2005-03-31 | 2006-03-31 | System and method for distributing voip data packets in group communications among wireless telecommunication devices |
IL186178A IL186178A0 (en) | 2005-03-31 | 2007-09-23 | System and method for distributing voip data packets in group communications among wireless telecommunication devices |
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US11/097,044 | 2005-03-31 | ||
US11/097,044 US7724743B2 (en) | 2005-03-31 | 2005-03-31 | System and method for distributing VoIP data packets in group communications amoung wireless telecommunication devices |
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WO2006105336A2 true WO2006105336A2 (en) | 2006-10-05 |
WO2006105336A3 WO2006105336A3 (en) | 2007-07-19 |
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PCT/US2006/011749 WO2006105336A2 (en) | 2005-03-31 | 2006-03-31 | System and method for distributing voip data packets in group communications among wireless telecommunication devices |
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US (2) | US7724743B2 (en) |
EP (1) | EP1869916A4 (en) |
JP (1) | JP5259386B2 (en) |
KR (1) | KR100951026B1 (en) |
CN (1) | CN101180899B (en) |
BR (1) | BRPI0608949A2 (en) |
CA (1) | CA2602829A1 (en) |
IL (1) | IL186178A0 (en) |
MX (1) | MX2007011797A (en) |
RU (1) | RU2007140241A (en) |
TW (1) | TW200705877A (en) |
WO (1) | WO2006105336A2 (en) |
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Also Published As
Publication number | Publication date |
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EP1869916A4 (en) | 2012-05-16 |
US7724743B2 (en) | 2010-05-25 |
EP1869916A2 (en) | 2007-12-26 |
TW200705877A (en) | 2007-02-01 |
MX2007011797A (en) | 2007-12-06 |
IL186178A0 (en) | 2008-01-20 |
US20060221968A1 (en) | 2006-10-05 |
WO2006105336A3 (en) | 2007-07-19 |
KR100951026B1 (en) | 2010-04-05 |
US20100195578A1 (en) | 2010-08-05 |
JP2008535406A (en) | 2008-08-28 |
KR20070118667A (en) | 2007-12-17 |
RU2007140241A (en) | 2009-05-10 |
CN101180899B (en) | 2013-03-27 |
BRPI0608949A2 (en) | 2010-02-17 |
JP5259386B2 (en) | 2013-08-07 |
CN101180899A (en) | 2008-05-14 |
CA2602829A1 (en) | 2006-10-05 |
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