TW560163B - Method for dialing Internet protocol phone - Google Patents

Abstract

The present invention provides a method for dialing Internet Protocol (IP) phone in GPRS network, which includes a caller party sending a calling message request to a called party; wherein, the calling message request includes the caller's IP address and the caller's communication port, and the called party receives the calling message request; next, the called party transmits a response UDP packet to the caller party based on the caller's IP address and the caller's communication port, in which the response UDP packet has the called party's IP address of the called party; then, the caller party receives the response UDP packet from the caller's communication port, and starts the transmission with UDP packets with voice data from the called party for IP phone talking. The present invention can let the users easily dial the IP phone and reduce the phone charge.

Description

560163 V. Description of the Invention (1) [Field of the Invention] The present invention relates to a method for dialing an Internet protocol phone (IP phone / 1-Phone), and in particular to a method for utilizing integrated packet radio services (general Packet radio service (GPRS) network transmission method to make Internet calls 0 [Background of the Invention] Due to the advancement of telecommunications technology, people can communicate by telephone even though they are located in different locations. The telephone connection is established via a public switched telephone network (PSTN) system. Although the use of telephones improves the way people communicate, it seems to shorten the distance between people; however, the charges are not cheap, especially for long-distance calls and even international calls. Because of this, the technology of Internet telephone (internet pr0toc1 phone, IP pone / I-Phone) came into being. Internet calling is to replace some or all of the pstn with the Internet or computer network. The main technology is to digitize the voice, compress it, and then use the packet format (p) on the Internet or Computer network to the receiver. The recipient then decompresses the IP packet and restores it to voice to perform the call function. In this way, Internet telephony can both achieve the purpose of communication and dialogue at both ends, and reduce call costs. According to the different communication methods, there are three types of Internet phones: computer-to-PC (PC-to-PC) and computer-to-phone (pc —10—ph〇ne).

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And phone-to-phone. Please refer to Figure 1, which shows a schematic diagram of the system and network used by the Internet phone. In Fig. I, computer 101 and computer 105 are connected to the Internet via server 103 and server 107 provided by an Internet service provider (ISP), respectively. road. On the other hand, telephone 111 and telephone 丨 2 1 8 do not connect PSTN 1 13 and PSTN 123. As shown in the first figure, if the computer 101 wants to make a network telephone connection with the computer 105, the telephone 101 needs to dial an IP phone number (such as a 1? Address, or a specific ID), and then the server Device 103, Internet 100, and computer 105 to perform Internet phone functions. If the computer 1 〇1 wants to connect to the phone 111 by Internet phone, the computer 101 needs to dial an additional code set by the ISP and the phone number of the phone 111, and then connect to the Internet through the server 1 〇 03, the Internet 1 0 0 Internet telephony gateway (I) ii5 provided by Internet telephony service provider (ITSP) ii5 and ITG 11 5 is used to convert between voice messages and IP packets . Therefore, the ITG 115 converts the IP packets transmitted by the computer 101 into voice signals, and then transmits them to the phone 111 via the PSTN 113. In this way, a conversation can be made between the "brain" 1 01 and the telephone 111. The principle of the network telephone connection between telephone 11 1 and telephone 1 2 1 is the same as described above. Although the cost of Internet telephony is much cheaper than that of using PSTN alone, in order to use it, it is necessary to dial an IP phone number and then connect through the feeder. The steps are quite tedious. And because mobile communication devices (such as mobile phones) that are becoming more common today are not yet able to make Internet calls,

560163 V. Description of the invention (3) For users using mobile communication devices, the communication cost of users cannot be reduced. [Objective and Summary of the Invention] In view of this, an object of the present invention is to provide a method for making an Internet call using a GPRS network. The method of the present invention is for a user of a mobile communication device to easily make an Internet call, and can reduce the call cost. According to the purpose of the present invention, a method for making an Internet call is provided. The method is used to provide a calling party to make an Internet call to a called party through a GPRS network, wherein the calling party and the called party The calling party has a calling party IP address and a called party IP address, respectively. This method starts with the calling party sending a call request message to the called party; wherein the request call message includes a caller IP address and a caller communication port (port). Then, the called party receives the call request message and learns the calling party's IP address and the calling party's communication port. Thereafter, the called party transcodes the user voice into a first voice data stream, and compresses the first voice data stream into at least one user data packet agreement (user da t agr am pr ot oco 1 UDP) packet, where the UDP packet has the IP address of the called party. Then, the called party sends this UDP packet to the calling party via the network according to the calling party's IP address and the calling party's communication port. The calling party receives the UDP packet through its calling party communication port, and performs unpacking and decompressing operations to form a first voice data stream. This second voice data stream is then decoded into the user voice and provided to the caller. After that, the calling party can start transmitting and receiving receivers to and from the called party according to the IP address of the called party in the UDP packet.

TW0559F (Yinghuada) .ptd Page 6 560163 V. Description of the invention (4) UDP packet with voice data for internet telephone conversation. In order to make the above-mentioned objects, features, and advantages of the present invention more comprehensible, a preferred embodiment is exemplified below and described in detail with reference to the accompanying drawings. [Preferred Embodiment] At present, mobile telephone systems in most regions use a global system for mobile communication (GSM) provided by the Nordic Post and Telephone and Telegraph. Please refer to Figure 2. In the figure, GSM 201 has a base transceiver station (BTS) 203 and a base station controller (BSC) 205 ° BTS 203 is responsible for wireless communication between GSM 201 and mobile communication devices. Signals are transmitted and received, and BSC 205 is used to manage and control BTS 203. This is why the mobile communication Pei Zhi can send wireless signals to BTS 203, and BTS 203 then sends the wireless signals to GSM 201 through BSC 20 5. In this way, the mobile communication devices can establish a wireless connection with each other for a conversation by using GSM 201. As shown in Figure 2, under the network architecture of GSM 201, the European Telecommunication Standards Institute has developed an integrated packet radio service (GPRS) network 211 to provide data transmission. service. The characteristic of GPRS network 21 1 is that data can be divided into several packets and transmitted together, so its transmission speed is quite fast. And a preferred embodiment of the present invention

TW0559F (Yinghuada) .ptd Page 7 560163 Fifth, the method of invention (5) protocol phone) method is applied to the system architecture in Figure 2, which is used to provide the calling party 207 dialing the network through GPRS network 211 The road phone has a conversation with the called party 209. The calling party 207 and the called party 209 are located in GSM 20 1 and each has a telephone number. Therefore, the calling party 207 and the called party 20 g can use GSM 20 1 to dial each other's phone number to talk to each other or send messages (such as SMS). Among them, the calling party 207 and the called party 109 may be a mobile communication device ', such as a mobile phone or a personal digital assistant (PDA) with a communication function. Please refer to FIG. 3 at the same time, which shows a flowchart of a method for making an Internet call according to a preferred embodiment of the present invention. Among them, step 301, step 303, step 305, step 307, and step 309 are the operation procedures of the calling party 207 in the method of the present invention. Step 321, step 323, step 325, step 327, step 329, and step 331 are the operations of the called party 209 in the method and method of the present invention. As shown in FIG. 3, the calling party 207 and the called party 209 are turned on and logged in to the GSM 201 in steps 301 ′ and 321, respectively. Among them, the calling party 207 also logs into the GPRS network 211 and obtains a calling party's Internet protocol (IP) address. Then, step 303 is performed. j In step 303, the calling party 207 uses GSM 201 to send a call request message to the telephone number of the called party 209. Among them, the call request message is a calling party 20 7 requesting the called party 20 9 to establish a connection request for an Internet phone (request), which includes a calling party IP address and a calling party communication port (port). . Next, the calling party 207 enters step 305, and listens to the communication port of the calling party, and waits to receive the call from the called party.

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5. Description of Invention (6) 209 Response. In step 323, the called party 209 receives the 1 ^ request message from the calling party 207, and learns the caller's 1 p address and the calling party's communication port. Then, in step 325, the called party 20 9 Provide users with a connection to decide whether to make an Internet call. If it is the method of the present invention, step 3 2 7 is performed; otherwise, the method ends. > After the user of the called party 209 agrees to make an Internet telephone connection with the calling party 207, in step 327, the called party 209 logs in to the GPRS network 211 'and obtains a called party IP address. Step 329 then follows. In step 329, the called party 329 transcodes the user's voice into a single-word data stream, and compresses the voice data stream into at least one

Respond to user datagram protocol (UDP) packets. The response UDP packet includes the IP address of the called party. The called party 209 transmits the UDP packet to the calling party 207 via the GPRS network 211 according to the calling party's IP address and the calling party's communication port. At this time, the calling party 207 enters step 307, receives the UDP packet transmitted by the called party 209 through the calling party's communication port, and unpacks, decompresses the UDP packet into a voice stream, and then decodes this. The voice data is streamed into the user's voice and provided to the user of the calling party 207. Among them, the calling party 207 learns the called party IP address of the called party 209 through this UDP packet. Next, the calling party 20 7 and the called party 209 perform steps 30 9 and 331, respectively. The calling party 207 and the called party 209 start to convert their user voice into a UDP packet with voice data and send it to the other party; and receive a UDP packet with voice data from the other party and convert it into a user language

T1V0559F (Innova) .ptd

560163 V. Description of the invention (7) " ----- = To talk about this, the calling party 207 and the called party 20 9 can start an internet call, and in steps 309 and 331, the calling party For the method of transmitting UDP packets with voice data at 207 or called party 209, please refer to FIG. 4. In step 401 of FIG. 4, the user starts speaking. Next, in step 403, j transcodes the user's voice into a voice data stream according to a voice quality parameter set in advance by the user. The sound quality parameter is used to determine the sound quality of the voice data stream; and the sound quality parameter may be, for example, a sampling frequency (samplin ^ ra " te) parameter or a sampling resolution parameter. Then in step 4 05, the above voice data stream is compressed and packed into at least one UDP packet. Then, in step 407, the UDP packet is transmitted according to the IP address of the other party. In step 309 and step 331, the calling party 207 or the called party 209 receives and processes the UDP packet with voice data. Please refer to FIG. 5. In step 5 of FIG. 5, a UDP packet with voice data transmitted by the other party is received first. Then proceed to step 503. In step 503, the above UDP packet is decompressed and decompressed into a voice data stream. Then, in step 505, the voice data stream is decoded into user voice, and in step 507, the user voice is played. [Effects of the Invention] The method for making a network call disclosed in the above embodiments of the present invention has the following advantages: (1) Saving the call cost of the user of the mobile communication device: the present invention

TTV0559F (Yinghuada) .ptd Page 10 560163 V. Description of the invention (8) Use GPRS network for transmission, and GPRS operators charge according to the amount of data transmitted. Such charges can actually reflect the user's usage and thus save usage. Costs. (2) Simplify the steps of making Internet calls: For users, they only need to send a call request message to establish an Internet call with the other party, which is very convenient. (3) Freely adjust call quality: Users can set their own sound quality parameters and adjust the appropriate call quality according to their needs and GPRS network conditions. (4) Easy connection: The method of the present invention does not need to dial an additional number, nor does it need to pass through an isp server, and implements the technology of Internet telephony in a peer-to-peer (peer-to-peer) connection. In summary, although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make various changes without departing from the spirit and scope of the present invention. And retouching, so the protection of the present invention is defined by the attached patent application as

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[Brief description of the diagram] Figure 1 shows the schematic diagram of the system and network used by the Internet phone. Figure 2 is not a schematic diagram of the network system where the mobile communication device is connected to the GSM & GPRS network. Fig. 3 is a flow chart showing a method for making a network call according to a preferred embodiment of the present invention. Fig. 4 is a green flowchart of the method for transmitting the UDP packet with voice data in Fig. 3. Fig. 5 is a flowchart showing a method for receiving a UDP packet with voice data in Fig. 3. [Explanation of figure number] 100: Internet 1 〇1, 105: computer 103, 107: server 111, 121: telephone 113, 123: public switched telephone network (public switched telephone network, PSTN) 115, 125: Internet! Telephony gateway (ITG)! 201: Global system for mobile communication 5 GSM 203: Base transceiver station (BTS)

560163 Brief description of the diagram 205: Base station controller (BSC) 2 0 7: Calling party 2 0 9: Called party 211: Integrated packet radio service (GPRS) network

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Claims (1)

560163 VI. Scope of patent application 1. A method for dialing Internet phone calls to provide a calling party to dial Internet phone calls (IP) via an integrated packet radio service (GPRS) network phone / I-Phone) to a called party located in a global system for mobile communication (GSM), the method includes: the caller logs in to the GPRS network and obtains a caller Internet Internet (IP) address; the calling party uses the GSM to send a call request message to the callee, wherein the call request message includes the caller IP address and a caller communication port (Port); the called party receives the call request message, logs in to the GPRS network, and obtains a called party IP address; the called party transcodes the user's voice of the called party into a first voice Data stream, and compressing the first voice data stream into at least one response user datagram protocol (UDP) packet, wherein the response UDP packet includes the Calling party ip address; the called party sends the response udp packet to the calling party via the GPRS network according to the calling party IP address and the calling party communication port; the calling party is controlled by the calling party The caller communication port receives the response packet, and unpacks, decompresses the UDP packet into a second voice data stream, and then decodes the second voice data stream into a user voice and provides it to the caller user; And the calling party's IP address of the called party in the response UDP packet, 560163 、 Scope of patent application " " " " " " " "-The called parties send and receive UDP packets with voice data to each other for Internet telephone conversation. -The method as described in claim 1 of patent scope, wherein the calling party is a mobile communication device. 3. The method as described in item 1 of the patent scope, wherein the called party is a mobile communication device. 4 · A method of dialing an Internet call to provide a calling party to borrow: GPRS network to dial an Internet call to a called party, where "the calling party" and the called party each have a calling party丨 p address and a called party 丨 p address, the method includes: the calling party sends a call request message to the called party, wherein the call request message includes the caller IP address and a The calling party's communication port; the called party receives the call request message; the called party transcodes the user's voice into a first voice data stream, and compresses and packs the first voice data stream into at least one UDP packet. The UDP packet includes the called party IP address; the called party sends the UDP packet to the calling party via the GPRS network based on the calling party IP address and the calling party communication port; the The caller receives the UDP packet through the caller's communication port and decompresses: unpacks and decompresses the UDP packet into a second voice data stream, then decodes the second voice data stream into a user voice and provides it to the caller Party user; and the calling party with the UD The called party ’s IP address in the P packet ’starts TW0559F (Yinghuada) .ptd Page 15 〆 一 560163 6. Scope of patent application Sending and receiving ⑽P packets with sound data to and from the called party for Internet telephone conversation. 5. The method as described in item 4 of the scope of patent application, wherein the calling party sends a call request message to the called party in violation of the step of the caller sending a call request message to the called party using a GSM . 6. The method according to item 4 of the scope of patent application, wherein the caller is a mobile communication device. 7. The method according to item 4 of the scope of patent application, wherein the called party is a mobile communication device. 8 · — A method for dialing an Internet call in a GPRS network, the method comprising: a. A caller sends a call request message to a called party, wherein the call request message includes the caller's A calling party IP address and a calling party communication port 'b. The called party receives the requested call message; c. The called party according to the calling party IP address and the calling party in the requested call message The caller communication port 'sends a response UDP packet to the caller, wherein the response UDP packet has the callee IP address of one of the callees; d. The caller is received by the caller communication port The response UDP packet; and e. The calling party starts transmitting and receiving the UDP packet with voice data to and from the called party according to the IP address of the called party in the response UDP packet for Internet telephone conversation. TW0559F (Yinghuada) .Ptd Page 16 560163 6. Application for Patent Scope 9. The method described in item 8 of Patent Application Scope, where step a is that the caller sends the call request message to the recipient using a GSM Calling party. 10. The method as described in item 8 of the scope of patent application, wherein the calling party of step e sends a UDP packet with voice data to the called party, further including: el. According to a preset voice quality parameter by the user Transcoding the calling party's user's voice into a voice data stream, wherein the voice quality parameter is used to determine the voice quality of the voice data stream; e2. Compressing the voice data stream and packing it into at least one UDP packet; and e3. According to the The called party IP address transmits the UDP packet to the called party. 11. The method according to item 10 of the scope of patent application, wherein the sound quality parameter is a sampling rate parameter. 12. The method according to item 10 of the scope of patent application, wherein the sound quality parameter is a sampling resolution parameter. 13. The method as described in item 8 of the scope of patent application, wherein the calling party in step e receives the UDP packet with voice data transmitted by the called party, further including: el · the calling party receives the called party The party transmits one UDP packet; e2. Decompresses the UDP packet and decompresses it into a voice data stream; and e3. Decodes the voice data stream into a user voice. 14. The method according to item 8 of the scope of patent application, wherein the calling party is a mobile communication device. TW0559F (Yinghuada) .ptd Page 17 560163 6. Scope of patent application 15. The method described in item 8 of the scope of patent application, wherein the called party is a mobile communication device. 16. · A method for a calling party to make an Internet call using a GpRS network, the method includes: a. The calling party sends a call request message to a called party, where 'the call request message includes the caller One of the calling parties, the calling party IP address and a calling party communication port; b. The calling party receives a response UDP packet transmitted by the called party through the calling party communication port, wherein the response UDP packet Including the callee IP address of one of the callees; and c. The caller transmitting a UDP packet with voice data to the callee according to the callee IP address in the response UDP packet, and Receive a UDP packet with voice data transmitted from the called party. 17 The method as described in item 6 of the patent application scope, wherein the method further comprises a step between step a and step b: a 1 · The caller listens (丨 丨 en) The caller communicates port. 18. The method according to item 16 of the scope of patent application, wherein the step a is that the calling party sends the call request message to the called party using a GSM. 19. The method as described in item 16 of the scope of patent application, wherein the calling party in step c sends a UDP packet with voice data to the called party, further comprising: cl. A sound quality preset by the user Parameter Transcoding the caller's user's voice into a voice data stream, where the voice quality parameter is used to determine the voice quality of the voice data stream; ISHI ISH page 18 TW0559F (English and Chinese). Ptd 560163 6. Application scope c2 · M shrinks the voice data stream and packs it into at least one udp packet; and c3 · transmits the UDp packet to the called party 20 according to the called party's Ip address · the method as described in item 9 of the patent application scope , Where the sound quality parameter is a sampling frequency parameter. 2 1 · The method according to item 19 of the scope of patent application, wherein the sound quality parameter is a sampling resolution parameter. 2 2 · The method as described in item 16 of the scope of patent application, wherein the step c receives the UDP packet with voice data transmitted from the called party, and further includes: cl · Receives a UDP transmitted by the called party Packet; c2 · decompress the UDP packet and decompress it into a voice data stream; and c 3 · decode the voice data stream into a user voice. 23. The method according to item 16 of the patent application scope, wherein the calling party is a mobile communication device. 24. The method according to item 16 of the scope of patent application, wherein the called party is a mobile communication device. 2 5. —A method for a called party to answer an Internet call using a GPRS network, the method includes: a. The called party receives a call request message sent by a caller, where the call request message includes One caller's caller's 1 P address and one caller's communication port; b. The callee's caller's 1 P digit in the call message according to the request TW0559F (Yinghuada) .ptd Page 19 560163 VI. Patent application address and the calling party's communication port, send a response UDp packet to the calling party 'where' the response UDP packet has one of the called party's The calling party's IP address; and c. The called party sends a UDP packet with voice data to the calling party 'and receives a UDP packet with voice data transmitted from the calling party. 26. The method as described in claim 25, wherein the step a is that the called party receives the call request message transmitted by the calling party. 27. The method according to item 25 of the scope of patent application, wherein the called party in step c sends a UDP packet with voice data to the calling party, further including: c1. According to a preset voice quality parameter by the user Transcoding the user's voice of the called party into a voice data stream, wherein the voice quality parameter is used to determine the voice quality of the voice data stream; c2. Compressing the voice data stream and packing it into at least one UDP packet; and c3. According to the The calling party IP address transmits the UDP packet to the calling party. 28. The method according to item 27 of the scope of patent application, wherein the sound quality parameter is a sampling frequency parameter. 29. The method according to item 27 of the scope of patent application, wherein the sound quality parameter is a sampling resolution parameter. 30. The method according to item 25 of the scope of patent application, wherein this step 560163 VI. The scope of application for patent C receives from the calling party and ...... ^. I has a UDP packet with voice data, including · cl · receives a UDp packet transmitted by the calling party; c2 unlocks the The UDP packet is decompressed into a voice data stream; and c3. The voice data stream is decoded into a user voice. 31. The method as described in claim 25, wherein the calling party is a mobile communication device. 32. The method as described in claim 25, wherein the called party is a mobile communication device. TW0559F (Innova) .Ptd Page 21