1. Field of Invention
The present invention relates to group creation and Near Field Communication (NFC). More particularly, the invention relates to system, apparatus and methods for creating and managing Push-over-Cellular (PoC) groups with the aid of a Radio Frequency Identification( RFID)/ (NFC) communication interface.
2. Description of Prior Art
Push To Talk over Cellular (PoC) service is a two-way form of communications and is described in Open Mobile Alliance document OMA-RD-PoC-V1-20050329-C, dated Mar. 29, 2005. PoC allows users to engage in immediate communication with one or more users. PoC service is similar to a “walkie-talkie” application where a user presses a button to talk with an individual user or broadcast to a group of participants. The receiving participants hear the sender's voice either without any action on their part, for example, without having to answer the call or may be notified and has to accept the call before he can hear the sender's voice. Other participants can respond to this message once this initial speech is complete. The communication is half-duplex, that is to say, at most one person can talk at a time and all other participants hear the speech. This contrasts with voice calls, which are full duplex, where more than one person can talk at a time.
A mobile terminal equipped with a push to talk button allows push to talk applications including participation in PoC groups. The mobile terminal may include one dedicated button for each group. A group is set up upon request to a service provider by one or more PoC subscribers. The service provider sends an invitation to all group members. Upon acceptance of the invitation by the members, the service provider establishes a register in a communication server listing the group members with an assigned Id. The provider appoints a member of the group to serve as the Host or the provider serves as the Host by default. The Host has the authority to initiate and administrate an active group session in an on line fashion. A group member must program his/her terminal to identify the group members, their group Id and terminal address which can be very involved and error-prone for group communications. What is needed in the art is a simple, fast, reliable, error free mechanism, preferably by touching interaction between and among mobile terminals, for PoC set up and group communication, particularly when participating in multiple groups.
Prior art related to PoC setup for multiple group sessions includes:
(1) U.S. Pat. No. 6,757,531 discloses voice based communication between a number of mobile terminals of a telecommunication network, the method comprising the steps of creating a group of said number of terminals and storing group information in each of the number of terminals, recording a voice message in one of the terminals of the group, dispatching the voice message to the terminals of the group from the one of the terminals, and receiving the voice message at least all other terminals of the group. The step of creating a group of terminals further comprises the steps of coupling together a number of mobile terminals, initiating a group creation command from at least one of the terminals, sending predetermined information from terminal to terminal to each terminal of the number of terminals for forming a group information, and transmitting the group information to all of the terminals thus forming a group of the terminals.
(2) U.S. Pat. No. 6,982,961 discloses providing push-to-talk and push-to-conference functionality in a CDMA system. Participants, in one embodiment, may be divided into active and inactive participants with active participants assigned a private uplink/downlink channel pair by the communication system. Inactive participants may be assigned a public downlink channel. In one embodiment, silent active participants of a conference or talk session are timed out and the private uplink/downlink channel pair previously assigned to such individuals are released for use elsewhere in the network or by other members of the conference. In a push-to-talk embodiment one private uplink/downlink channel pair may at any given time be passed between the presently active members of the group.
(3) U.S. Pat. No. 6,970,727 discloses send, end, and push-to-talk functions of a combination cellular telephone/two-way radio, controlled with a single button on a hands-free device having a cable attached to the button, a microphone, and an earpiece. The button is pressed to instruct the cellular telephone/two-way radio to transmit in a half-duplex communications mode for a two-way radio conversation. The user speaks while continuing to press the button, to transmit the user's words in the two-way radio conversation. Next, the user releases the button, to instruct the cellular telephone/two-way radio to cease transmitting, to permit the user to hear words transmitted by the other party to the two-way radio conversation. Additionally, the user may answer an incoming cellular telephone call by pressing the button used during the two-way radio conversation, to instruct the cellular telephone/two-way radio to establish communications for a full duplex cellular telephone conversation.
(4) WO20055084059 discloses establishing a push-to-talk communication link in a GPRS radio communication system, whereby an access message (PTT request) of a first subscriber terminal (UE A) is received by a device (PTT Routing (UL), PTT agent (UL) in a base station system (BTSC, BSC). The at least one access message contains information relating to the first subscriber terminal and to at least one addressed second subscriber terminal (UE B), whereby the information is transmitted to an application server (PTT application server) by the device (PTT Agent (UL)), whereby resources for data transmission from or to the subscriber terminal (UE A) are assigned by the base station system (BTSC, BSC), and after reception of confirmation (PTT compressed notification), accessibility of at least one addressed second subscriber terminal (UE B), of the data from or to the first subscriber terminal device (UE A) is transmitted via assigned resources.
None of the cited art discloses a mobile terminal equipped with a radio frequency identification (RFID)/near field communication (NFC) interface means for creating and managing PoC communication groups more intuitively with the aid of RFID tags via the general concept of “touching” provided by the RFID/NFC interface.
An apparatus for creating and managing group services in a cellular network for easy, fast and reliable connection of a subscriber (s) to one or more group services via a touching interaction between and among mobile terminal and RFID tags. A first terminal device stores service description records for a first group of services in a cellular network. The first terminal is equipped with a communication module including a first RFID/NFC interface. A tangible object, typically a passive or semi-passive tag, is equipped with a RFID/NFC tag/transponder and stores service description records for the first group of services. The first terminal is capable of initiating a new group of services group in the cellular network via touching the first RFID/NFC interface in the cellular network. The first terminal device further writes the specific information of the new group of services group to the tangible object. At least one second terminal device equipped with a second communication module includes a second RFID/NFC interface. The second communication module is capable of joining to the group of services group by way of reading the information for the tangible object over the second RFID/NFC interface upon touching the tangible object.
An aspect of the invention is a push-to-talk-over cellular (PoC) network using touch interaction between and among mobile terminals and a RFID tag via a RFID/NFC interface.
Another aspect is including (PoC) settings and configuration information in a RFID tag for transfer to a mobile terminal, enabling interactions with other mobile terminals in a PoC group or groups.
Another aspect is establishing PoC set up and configuration information in a server for transfer directly to each mobile terminal upon request, enabling participation of the mobile terminal in a PoC group or groups.
Another aspect is at least two terminal devices in touching relation for transferring PoC settings from one terminal device to the other terminal device without the use of a RFID tag.
Another aspect is a PoC enabled mobile terminal storing PoC setting and configuration information in a RFID tag via touching interaction between the terminal and the tag.
Another aspect is a data structure for PoC group settings in a RFID tag including (i) PoC server name, (ii) group identifier, (iii) group name, and (iv) tag initiating action.
Another aspect is storing PoC setting and configuration information in a RFID tag for at least two groups.
Another aspect is a group identifier in the configuration information stored in a RFID tag for group selection purpose by terminal devices.
Another aspect is a RFID tag object as a passive or semi active tag.
Another aspect is PoC enabled mobile devices for selecting among groups.
The invention will be further understood from the following detailed description of a preferred embodiment, taken in conjunction with appended drawings, in which:
The PoC system includes a base station (BTS)/base station controller (BCS) 102, serving a plurality of PoC enabled mobile terminals 1041 1042 and 104n, separately or within groups, e.g. group 1; group 2; group N, all within a BTS/BSC coverage area 106 via RF signals 108 transmitted by the base station and received from the mobile terminals. The base station is coupled to a communication server 110 for selecting and storing PoC set up and configuration information for the mobile terminals for group services. The base station is further connected to a cellular network 114, via a connection 112 which may be a for example a general packet radio system (GPRS) connection. The GPRS connection connects the mobile stations served by the base station 102 to a circuit switched network, and to other mobile terminals served by remote base stations connected to the cellular network. The cellular connected base stations allow mobile terminals served by different base stations to be in the same group. The GPRS network is described in detail in ETSI Standard, GSM 03.60 v6.2.0. GPRS is a packet-mode techniques used for transferring data and signaling. Alternatively, other cellular communications system may be coupled to the base station 102, for example, a global system mobile (GSM)
A mobile terminal can be a member of many different PoC groups. Each PoC group is assigned a group identifier (GID) by a service provider providing PoC service to the group. Thus, a mobile terminal may have many PoC group GIDs. To control the group membership of a mobile terminal, a database is created in the communication server 110 for the user. Typically, the group memberships are limited to five to ten groups per member. However, the database in the communication servers can also collect information of the membership of the users. Then all information regarding the users in the groups may be collected and stored in the communication server. The communication server activates the PoC group. The terminals can start to communicate with each other by transmitting data between pre-determining group members.
The messages and data transmitted to or received from the mobile terminals, alone or in groups are shown in a display 212 coupled to the CPU. A memory 214 comprising volatile and non-volatile storage contains programmed instructions for applications related to PoC set-up for (i) sending and listening to group messages or otherwise; (ii) operating systems; (iii) communication protocols necessary for creating and managing group services in a cellular network, and (iv) storing data and other information for operating the PoC system and devices. A power supply 216 provides the energy for operating the mobile terminal units. A microphone 222 is included in the terminal 200 for providing means for voice communications with other mobile terminals in a group or alone.
A RF-ID tag 218 may be installed in the terminal 200 according to embodiments of the present invention. According to one embodiment, the tag may be a passive device, which operates without an internal battery source, deriving the power to operate from the RF field 108 (See
A RF-ID reader module 220 is installed in the mobile terminal and connected to the CPU. The reader module, using the power supply 216, transmits RF interrogation signals and receives responding RF signal from an external RF-ID tag (to be described in conjunction with
In an alternative embodiment, the reader module 200 is capable of operating in an active communication mode with a reader module in another mobile device (not shown), in accordance with the interface and protocols described in Standard ECMA-340-Near Field Communication Interface and Protocol (NFCIP-1). During the active communication mode, one of the participating RFID tag readers simulates a RFID tag whereas the other one actively simulates a RFID tag reader. In contrast to passive RFID tags which are energized by the interrogation signal of the RFID tag reader, both participating RFID tag readers are always energized independently, i.e. have their own power supply to generate the radio/high frequency (RF/HF) signals used for data communications therebetween. Therefore, the RFID tag reader, which actively simulates a RFID tag, may be regarded as an active RFID tag. Alternatively, the reader provides radio frequency identification functionality also during unpowered conditions Additional details regarding RFID tag reader- RFID tag reader intercommunication is described in International Publication WO 2005/008575, published Jan. 27, 2005, assigned to the same assignee as that of the present invention and fully incorporated herein by reference.
Because of the data requirements for PoC group set up,
The stored data in the mobile terminal can be transferred to an external tag 300 using a write operation when the tag is within the range of a reader, as will be described hereinafter. The data structure includes, according to embodiments of the present invention a POC group identifier 402, assigned by a PoC service provider and installed in the communication server 110 (
Representative PoC services provided by the present invention will be described in conjunction with
All the use cases described above can be implemented by a specific service record. The record can be stored into a tag or can be shared by device to device communication between mobile phones. In more specific terms, the service record can be implemented in a NDEF (-Nfc Forum Data Exchange Format ) (Former NTIP) record type standardized by the NFC Forum, 401 Edgewater Place, Suite 600, Wakefield, Mass. 01880, USA, and contains:
1. Action commands like: “PoC Server Setup”, “PoC Group setup”, “Select PoC Group”, “Tangent”; and
2. Action command related parameters.
Also combinations of the above can be formed. For instance, a Tangent Service record could be linked to “Select PoC Group”. Select PoC Group could again be linked to “PoC Group Setup”.
The data amount needed for providing the combinations indicated above is small enough to be read in one short go. The device may interpret touching of a tag as user pressing the tangent and keeping the tangent depressed for the duration of the touch. If the device does not have the right PoC group active before the touch, the named PoC group would be selected and activated before “pressing Tangent”. If the named POC group was not defined at all before the touch, the device configures the PoC group before selecting and activating it, and only after this it opens up the microphone.
To help users with PoC phones without NFC, the NFC enabled device would be capable of showing all necessary configuration information in order to manually perform the configurations to non-NFC phones if so needed.
Again, the transfer of the PoC set up and configuration information is fast, accurate, reliable and error free, enabling the user to set up or participate in a group or groups. The user is not involved in the transfer, except for touching together the tag and the mobile terminal for an instant.
It will be apparent to persons skilled in the relevant art that various changes in form and detail can be made therein without departing from the spirit and scope of the invention. Accordingly, the breadth and scope of the present invention should not be limited by any of the above-described exemplary embodiments, but should be defined only in accordance with the following claims and their equivalents.
This application is related to application Ser. No. 10/785,025, entitled “ELECTRONIC PAYMENT SCHEME IN A MOBILE ENVIRONMENT FOR SHORT-RANGE E-COMMERCE: METHODS, SYSTEMS, APPARATUS AND PROGRAM PRODUCTS”, filed Feb. 26, 2004 (NC 28929) (4208-4169), assigned to the same assignee as that of the present invention.