WO2011120458A2 - Procédé, terminal mobile, dispositif et système pour mise en oeuvre de services vocaux - Google Patents

Procédé, terminal mobile, dispositif et système pour mise en oeuvre de services vocaux Download PDF

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Publication number
WO2011120458A2
WO2011120458A2 PCT/CN2011/073675 CN2011073675W WO2011120458A2 WO 2011120458 A2 WO2011120458 A2 WO 2011120458A2 CN 2011073675 W CN2011073675 W CN 2011073675W WO 2011120458 A2 WO2011120458 A2 WO 2011120458A2
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WO
WIPO (PCT)
Prior art keywords
packet
voice
frame
address
control frame
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PCT/CN2011/073675
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English (en)
Chinese (zh)
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WO2011120458A3 (fr
Inventor
孔维强
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2011/073675 priority Critical patent/WO2011120458A2/fr
Priority to CN201180000684.XA priority patent/CN102282886B/zh
Publication of WO2011120458A2 publication Critical patent/WO2011120458A2/fr
Publication of WO2011120458A3 publication Critical patent/WO2011120458A3/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, a mobile terminal, a device, and a system for implementing a voice service. Background of the invention
  • WiFi wireless routers are very common, and laptops and mobile terminals with WiFi interfaces have become common devices.
  • a terminal with a WiFi interface is connected to a public network through a wireless router.
  • a voice over digital (VoIP) session in a home environment is a Vonet by using a wireless router for a VoIP session.
  • VoIP voice over digital
  • the transmission of voice call control frames and voice frames is based on the IP protocol.
  • the relevant software developer provides the application software of the mobile terminal and sets up a call control server in the public network.
  • the voice control frame transmission protocol model of VoWiFi technology is shown in Figure 3.
  • the physical layer of the mobile terminal (MS) is WiFi PHY and WiFi MAC, the link layer is IP, the transport layer is TCP or UDP, and the application layer is Sigcomp and SIP/SDP.
  • the physical layer of the wireless router is WiFi PHY, the link layer is WiFi MAC, and the network layer is IP.
  • the transmission process of the voice control frame is as follows:
  • the MS encapsulates the voice control frame into a UDP or TCP message in Sigcomp, and fills the IP address to form an IP packet, where the IP address is used to identify the wireless router.
  • the IP packet is then processed by the WiFi PHY protocol and the WiFi MAC protocol and sent to the wireless router.
  • the wireless router forwards the IP packet to the public network.
  • the voice frame transmission protocol model of VoWiFi technology is shown in FIG. 4.
  • the physical layer of the MS is WiFi PHY and WiFi MAC, the link layer is IP, the transport layer is UDP, and the application layer is RTP.
  • the physical layer of the wireless router is the WiFi PHY, the link layer is the WiFi MAC, and the network layer is the IP.
  • the MS encapsulates the voice frame into a UDP packet in the RTP, fills the IP address to form an IP packet, and then sends the IP packet to the wireless router through the WiFi PHY and the WiFi MAC.
  • the wireless router forwards the IP packet to the public network.
  • VoWiFi is based on the classic network model for transmission.
  • the function of the wireless router is only to forward IP packets. It does not distinguish whether the forwarded IP packets are voice control frames or voice frames or ordinary non-voice data, so the quality of the voice service cannot be guaranteed. Summary of the invention
  • the embodiment of the invention provides a method for implementing a voice service to ensure call quality of a voice service.
  • the embodiment of the invention further provides a mobile terminal that implements a voice service to ensure the call quality of the voice service.
  • the embodiment of the invention further provides a device for implementing a voice service, which ensures the call quality of the voice service.
  • the embodiment of the invention further provides a system for implementing a voice service to ensure the call quality of the voice service.
  • the technical solution of the embodiment of the present invention is as follows:
  • a method for implementing a voice service comprising:
  • the access point AP performs NAS signaling interaction with the core network through the public network;
  • the AP obtains the voice control frame IP packet sent by the mobile terminal MS according to the first IP address allocated by the WiFi network, and obtains the voice control frame GTPU packet after identifying the second port number, and sends the voice control frame GTPU message to the public network to Core Network;
  • the AP obtains the voice frame IP packet sent by the MS according to the first IP address, and obtains the voice frame GTPU packet after identifying the second port number, and sends the voice frame GTPU packet to the core network through the public network.
  • the access point AP performs NAS signaling interaction with the core network through the public network, and includes: the access point AP performs NAS signaling interaction with the core network through the public network, and obtains PDP context information including the second IP address allocated by the core network;
  • the MS encapsulates the voice control frame into a voice control frame IP packet according to the first IP address, the second IP address, and the second port number, and sends the voice control frame IP packet to the AP;
  • the MS encapsulates the voice frame into a voice frame IP packet according to the first IP address, the second IP address, and the second port number, and sends the voice frame IP packet to the AP.
  • Encapsulating the voice control frame into the voice control frame IP packet according to the first IP address, the second IP address, and the second port number includes: the MS encapsulates the voice control frame into the voice control frame, the first UDP packet, or the voice control After the first TCP packet of the first UDP packet or the voice control frame of the voice control frame is filled with the second IP address, the second IP packet of the voice control frame is obtained; the second IP packet of the voice control frame is obtained.
  • the second port number is added to be encapsulated into a second UDP packet of the voice control frame; the second UDP file in the voice control frame is filled with the first IP address, and the voice control frame IP file is obtained;
  • the AP obtains the voice control frame IP packet sent by the MS according to the first IP address allocated by the WiFi network, and obtains the voice control frame after the second port number is obtained.
  • the GTPU message includes: the voice that the AP obtains according to the first IP address.
  • the control packet IP packet is removed from the first IP address, and the second UDP packet of the voice control frame is obtained.
  • the second UDP packet in the voice control frame is identified, the second UDP packet in the voice control frame is removed.
  • the second port number is obtained, and the second IP packet of the voice control frame is obtained.
  • the GTPU corresponding to the GTPU is added to the second IP packet of the voice control frame to obtain the GTPU packet of the voice control frame.
  • the MS follows the first IP address.
  • the second IP address and the second port number are used to encapsulate the voice frame into the voice frame IP packet.
  • the MS encapsulates the voice frame into the voice frame RTP message, and then encapsulates the voice frame RTP message into the voice frame first UDP packet.
  • the first UDP packet in the voice frame is filled with the second IP address to obtain the second IP packet of the voice frame; the second port number is added to the second IP packet of the voice frame to obtain the second UDP packet of the voice frame; Second UDP Filling the first text IP address, the IP packets to obtain the speech frame;
  • the AP obtains the voice frame IP packet sent by the MS according to the first IP address, and obtains the voice frame GTPU message after the second port number is identified.
  • the AP removes the voice frame IP packet obtained according to the first IP address.
  • An IP address is obtained, and the second UDP >3 ⁇ 4 text of the voice frame is obtained.
  • the second port number of the second UDP packet of the voice frame is removed, and the second frame of the voice frame is obtained.
  • IP packet add the GTPU corresponding header to the second IP packet of the voice frame to obtain the voice frame GTPU Message.
  • the performing the NAS signaling interaction with the core network includes: adding, by the MS, the first port number of the NAS signaling to obtain the first UDP packet; filling the first UDP packet with the first IP address to obtain the first IP packet, sending the first An IP packet to the AP;
  • the AP removes the first IP address according to the first IP address obtained by the first IP address, and obtains the first UDP packet. After identifying the first port number, the AP removes the first port number in the first UDP packet to obtain the NAS. Signaling; Send NAS signaling to the core network through the public network.
  • the NAS signaling interaction with the core network includes performing NAS signaling interaction with the core network directly through the public network.
  • the method further includes: when the non-voice data is encapsulated into a UDP packet, the MS adds a third port number, and the AP directly interacts with the public network to exchange non-speech data after identifying the third port number.
  • An apparatus for implementing a voice service comprising:
  • the WiFi interface module obtains the voice control frame IP packet sent by the mobile terminal MS according to the first IP address allocated by the WiFi network, and obtains the second IP packet of the voice control frame after identifying the second port number; IP packet to the core network interface module;
  • the voice packet IP packet is obtained according to the first IP address, the second IP packet of the voice frame sent by the MS is obtained after the second port number is identified, and the second IP packet of the voice frame is sent to the core network interface module.
  • the core network interface module performs NAS signaling interaction with the core network through the public network
  • the voice frame GTPU message is obtained from the second IP packet of the voice frame; the voice frame is sent through the public network, and the GTPU sends the text to the core network.
  • the WiFi interface module is further configured to: send, by the core network interface module, PDP context information including a second IP address allocated by the core network;
  • the core network interface module is further configured to: obtain PDP context information including a second IP address allocated by the core network, and include PDP context information of the second IP address allocated by the core network, by performing a NAS signaling interaction with the core network through the public network.
  • the WiFi interface module is further configured to: remove the first IP address of the voice control frame IP packet obtained according to the first IP address, and obtain the second UDP packet of the voice control frame; and identify the second UPD packet in the voice control frame. After the second port number, the second port number in the second UDP packet of the voice control frame is removed, and the second IP packet of the voice control frame is obtained.
  • the voice frame IP packet obtained according to the first IP address is removed from the first IP address to obtain a voice frame.
  • the second port number of the second UDP packet of the voice frame is removed, and the second IP packet of the voice frame is obtained.
  • the core network interface module is further configured to: add a GTPU corresponding header to the second IP packet of the voice control frame to obtain a voice control frame GTPU "3 ⁇ 4 text;
  • the WiFi interface module is further configured to: remove the first IP address obtained by using the first IP address to obtain the first UDP packet; and after identifying the first port number, remove the first UDP packet.
  • One port number gets NAS signaling; sends NAS signaling to the core interface module;
  • the core network interface module further sends the NAS signaling to the core network through the public network.
  • the core network interface module is further configured to perform NAS signaling interaction with the core network directly through the public network.
  • the WiFi interface module is further configured to directly interact with the public network to interact with the non-speech data after identifying the IP packet of the third port number.
  • a mobile terminal that implements a voice service where the mobile terminal MS resides in a WiFi network, obtains a first IP address allocated by the WiFi network, and the MS obtains PDP context information including a second IP address allocated by the core network through the WiFi network;
  • the voice control frame is encapsulated into a voice control frame IP packet according to the first IP address, the second IP address, and the second port number, and the voice control frame IP packet is sent;
  • the voice frame is encapsulated into a voice frame IP packet according to the first IP address, the second IP address, and the second port number, and the voice frame IP packet is sent.
  • the MS encapsulates the voice control frame into the first UDP packet or the voice control frame of the voice control frame.
  • the second IP packet of the voice control frame is obtained after the first UDP packet or the first TCP packet of the voice control frame is filled with the second IP address; the second port is added to the second IP packet of the voice control frame.
  • the number is encapsulated into a second UDP packet of the voice control frame; the second UDP packet of the voice control frame is filled with the first IP address to obtain a voice control frame IP packet;
  • the MS encapsulates the voice frame into a voice frame RTP packet, and then encapsulates the voice frame RTP packet into the first UDP packet of the voice frame.
  • the first UDP packet in the voice frame is filled with the second IP address to obtain the second IP packet of the voice frame.
  • the second UDP packet is added to the second IP packet of the voice frame to obtain the second UDP packet of the voice frame; the second UDP packet of the voice frame is filled with the first IP address to obtain the voice frame IP packet.
  • the MS is further configured to: add the first port number to the NAS signaling to obtain the first UDP packet; fill the first UDP packet with the first IP address to obtain the first IP packet, and send the first IP packet.
  • the MS is further configured to add a third port number to the non-speech data, and send an IP packet including the non-speech data.
  • a system for implementing a voice service comprising:
  • the mobile terminal MS resides in the WiFi network to obtain the first IP address allocated by the WiFi network, and the MS obtains PDP context information including the second IP address allocated by the core network through the WiFi interface module; according to the first IP address and the second IP address And the second port number encapsulates the voice control frame into a voice control frame IP packet, and sends the voice control frame IP packet to the WiFi interface module;
  • the voice frame is encapsulated into a voice frame IP packet according to the first IP address, the second IP address, and the second port number, and the voice frame IP packet is sent to the WiFi interface module.
  • a WiFi interface module sent from a core network interface module including a second IP address assigned by the core network
  • the voice control frame IP packet is obtained according to the first IP address, the second IP packet of the voice control frame is obtained after the second port number is identified, and the second IP packet of the voice control frame is sent to the core network interface module.
  • the voice packet IP packet is obtained according to the first IP address, the second port number is obtained after the second port number is identified, and the second IP packet of the voice frame is sent to the core network interface module.
  • the core network interface module performs NAS signaling interaction with the core network through the public network, and obtains PDP context information including the second IP address allocated by the core network, and includes a second IP address allocated by the core network.
  • the PDP context information is sent to the WiFi interface module;
  • the voice frame GTPU message is obtained from the second IP packet of the voice frame; the voice frame GTPU message is sent to the core network through the public network.
  • the MS is further configured to encapsulate the voice control frame into the first UDP packet of the voice control frame or the first TCP packet of the voice control frame; and fill the first UDP packet or the voice control frame of the first TCP packet in the voice control frame.
  • the second IP address the second IP packet of the voice control frame is obtained; the second port number of the voice control frame is added, and the second port number is encapsulated into a second UDP packet of the voice control frame; and the second UDP packet of the voice control frame is filled.
  • the first IP address is obtained as a voice control frame IP packet;
  • the voice frame RTP packet is encapsulated into the first UDP packet of the voice frame.
  • the first UDP packet of the voice frame is filled with the second IP address to obtain the second IP packet of the voice frame.
  • Adding a second port number in the second IP packet of the voice frame to obtain a second UDP packet of the voice frame filling the first IP address in the second UDP packet of the voice frame to obtain a voice frame IP packet;
  • the WiFi interface module is further configured to: remove the first IP address according to the first IP address of the voice control frame IP packet obtained by the first IP address, and obtain the second UDP packet of the voice control frame; and identify the second in the second UPD packet of the voice control frame. After the second port number is removed, the second port number in the second UDP packet of the voice control frame is removed, and the second IP packet of the voice control frame is obtained.
  • the second port number of the packet is the second IP packet of the voice frame.
  • the core network interface module is further configured to: add a GTPU corresponding header to the second IP packet of the voice control frame to obtain a voice control frame GTPU "3 ⁇ 4 text;
  • the GTPU corresponding to the GTPU is added to the second IP packet of the voice frame to obtain the GTPU packet.
  • the MS is further configured to: add the first port number to the NAS port to obtain the first UDP packet; fill the first UDP packet with the first IP address to obtain the first IP packet, and send the first IP packet to the WiFi interface.
  • Module The WiFi interface module further removes the first IP address obtained by the first IP address to obtain the first UDP packet; after identifying the first port number, the first port in the first UDP packet is removed. Get the NAS signaling; send the NAS signaling to the core interface module;
  • the core network interface module further sends the NAS signaling to the core network through the public network.
  • the core network interface module is further configured to perform NAS signaling interaction with the core network directly through the public network.
  • the MS is further configured to add a third port number to the non-voice data, and send an IP packet including the non-voice data to the WiFi interface module;
  • the WiFi interface module is further configured to directly interact with the public network to interact with the non-speech data after identifying the IP packet of the third port number.
  • the transmission model is different from the prior art, and the first IP address and the second port number are added in the voice control frame, in the voice.
  • the first IP address, the second IP address, and the second port number are added to the frame, so that the AP can perform voice control frame and voice frame transmission through the public network and the core network, and optimize the delay, congestion, and jitter by using the core network itself.
  • the characteristics of the voice service are thus guaranteed.
  • FIG. 1 is a schematic structural diagram of a wireless network according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a home WiFi wireless network
  • FIG. 5 is a schematic flowchart of a method for implementing a voice service
  • 6 is a transmission protocol model of a wireless side of a voice control frame
  • FIG. 8 is a schematic structural diagram of a system for implementing a voice service
  • FIG. 9 is a schematic flowchart of a method for implementing a voice service in Embodiment 1;
  • FIG. 10 is a transmission protocol model of the wireless side of the NAS signaling transmission in the second embodiment.
  • the access network of the telecommunications carrier used by the home network that is, the public network
  • the indicators such as jitter and packet loss of the public network are not reliable, and the voice service is very sensitive to these indicators, so the quality of the voice service cannot be guaranteed.
  • a mobile terminal transmits a voice control frame and a voice frame through a WiFi network and an access point; and the access point transmits a voice control frame and a voice frame through a public network and a core network. Since the core network can optimize the delay, the congestion, and the jitter, the technical solution of the present invention can prevent the delay jitter and congestion through the core network transmission, and the voice is guaranteed, compared with the traditional transmission of the voice control frame and the voice frame through the public network. conversation quality.
  • Step 501 NAS signaling interaction.
  • NAS signaling interaction with the core network is required to obtain the second IP address allocated by the core network.
  • the second IP address is the address at which the MS interacts with the core network for voice interaction.
  • Step 502 Send a voice control frame.
  • the MS encapsulates the voice control frame into a voice control frame and sends the IP packet to the access point.
  • the access point is decapsulated and then sent to the core network through the public network.
  • the core network includes WCDMA, TD-SCDMA, and LTE. The following is a description of WCDMA over a public network connection.
  • the 6 is a transmission protocol module on the wireless side of the voice control frame.
  • the physical layer of the MS is WiFi PHY
  • the protocol layer is WiFi MAC, IP, UDP, IP, TCP/UDP, Sigcomp from bottom to top
  • the physical layer of SIP/SDP 0 access point (AP) is WiFi PHY, protocol layer. They are WiFi MAC, IP, and UDP. Since the present invention only changes to the wireless side, the core network side is not modified, and the AP interacts with the core network according to the existing standard protocol. Therefore, only the wireless side, that is, the left column, is described in detail.
  • the MS encapsulates the voice control frame into voice according to the first IP address, the second IP address, and the second port number. Controlling the IP packet of the frame and sending the IP packet of the voice control frame to the AP; the AP obtains the IP packet of the voice control frame according to the first IP address, and obtains the GTPU packet of the voice control frame after the second port number is identified, and the public network is obtained. Send a voice control frame GTPU message to the core network.
  • the MS is encapsulated into the first UDP packet of the voice control frame or the first TCP packet of the voice control frame; the first UDP packet in the voice control frame or After the first TCP packet of the voice control frame is filled with the second IP address, the second IP packet of the voice control frame is obtained.
  • the second IP packet is encapsulated into the second UDP packet of the voice control frame.
  • the second UDP packet of the voice control frame is filled with the first IP address to obtain the voice control frame IP packet; the voice control frame IP packet is processed by the WiFi MAC protocol and the WiFi PHY protocol, and then transmitted to the AP.
  • the first IP address is allocated by the WiFi network when the MS resides in the WiFi network.
  • the first IP address is removed from the voice control frame IP packet obtained by the first IP address, and the second UDP packet of the voice control frame is obtained.
  • the second port number in the second UPD packet the second port number in the second UDP packet of the voice control frame is removed, and the second IP packet of the voice control frame is obtained; and the second IP packet of the voice control frame is further received.
  • the GTPU corresponding header is added to obtain a voice control frame GTPU packet; the voice control frame GTPU packet is sent to the core network through the public network.
  • Step 503 Send a voice frame.
  • the MS encapsulates the voice frame into a voice IP packet and sends it to the access point. After the access point decapsulates the packet, it will be sent to the core network through the public network.
  • the transmission protocol model on the wireless side of the voice frame is shown in Figure 7.
  • the physical layer of the MS is WiFi PHY, and the protocol layer is WiFi MAC, IP, UDP, IP, UDP, RTP from bottom to top.
  • the physical layer of the AP is the WiFi PHY, and the protocol layers are WiFi MAC, IP, and UDP.
  • the MS encapsulates the voice frame into a voice frame IP packet according to the first IP address, the second IP address, and the second port number, and sends the voice frame IP packet to the AP.
  • the AP obtains the voice IP packet according to the first IP address.
  • the voice frame GTPU message is obtained, and the voice frame GTPU is sent through the public network to the core network.
  • the MS encapsulates the voice frame into a voice frame RTP message, and then encapsulates the voice frame RTP message into the first UDP packet of the voice frame; the first UDP packet in the voice frame is filled with the second IP address, and the voice frame is obtained.
  • the second IP packet is sent to the second IP packet of the voice frame to obtain the second UDP packet of the voice frame; the second UDP packet of the voice frame is filled with the first IP address, and the voice packet IP packet is obtained;
  • the voice frame IP is transmitted to the AP after being processed by the WiFi MAC protocol and the WiFi PHY protocol.
  • the packet received by the AP is processed by the WiFi MAC protocol and the WiFi PHY protocol
  • the first IP address of the voice frame IP packet obtained by the first IP address is removed, and the second UDP packet of the voice frame is obtained.
  • the second port number is identified in the UDP packet
  • the second port number of the second UDP packet of the voice frame is removed, and the second IP packet of the voice frame is obtained.
  • the header of the GTPU is added to the second IP packet of the voice frame.
  • the voice frame GTPU message is obtained; the voice frame GTPU message is sent to the core network through the public network.
  • the mobile terminal contacts the AP through the WiFi network according to the first IP address, and the AP contacts the core network through the public network.
  • the UDP protocol uses different port numbers to reserve its own data transmission channel for different applications. It is this mechanism that enables simultaneous transmission and simultaneous reception of multiple application data at the same time.
  • the client or server sends the UDP datagram through the UDP source port, and the data receiving party receives the data through the UDP destination port.
  • the first port of the UDP is used for the transmission of the NAS signaling
  • the AP identifies the NAS signaling according to the first port number, and sends the NAS signaling to the core network according to the standard signaling plane interface
  • the second port of the UDP is used for The voice control frame and the voice frame are transmitted, and the AP identifies the voice control frame or the voice frame according to the second port number, and sends the voice control frame or the voice frame to the core network according to the standard user plane interface.
  • the UDP third port is used to transmit non-voice data.
  • the transmission model of the non-speech data is the same as that of FIG. 3, and the MS adds the third port number when the non-speech data is encapsulated into UDP>3 ⁇ 4, and the AP directly interacts with the public network to interact with the non-speech data after identifying the third port number.
  • Non-speech data is a data service that is commonly accessed by the Internet in a home network.
  • FIG. 8 is a schematic structural diagram of a system for implementing a voice service, including a device for implementing a voice service and an MS 803.
  • the mobile terminal 803 is connected to the device that implements the voice service through the WiFi network, and the device that implements the voice service, that is, the AP, is connected to the core network such as WCDMA, TD-SCDMA, and LTE through the public network.
  • the core network such as WCDMA, TD-SCDMA, and LTE through the public network.
  • the device for implementing voice services includes a core network interface module 801 and a WiFi interface module 802.
  • the connection relationship between the core network interface module 801, the WiFi interface module 802, and the MS803 will be described in detail below.
  • the core network interface module 801 performs NAS signaling interaction with the core network through the public network, obtains PDP context information including the second IP address allocated by the core network, and sends PDP context information including the second IP address allocated by the core network to the WiFi.
  • Interface module 802. The WiFi interface module 802 transmits the PDP context information obtained from the core network interface module 801 including the second IP address assigned by the core network to the MS 803.
  • the MS 803 resides on the WiFi network and obtains the first IP address assigned by the WiFi network.
  • the MS 803 obtains PDP context information including the second IP address assigned by the core network through the WiFi interface module 802.
  • the MS803 encapsulates the voice control frame into a voice control frame IP packet according to the first IP address, the second IP address, and the second port number, and sends the voice control frame IP packet to the WiFi interface module 802.
  • the WiFi interface module 802 obtains the voice control frame IP packet according to the first IP address, and obtains the second IP packet of the voice control frame after identifying the second port number; and sends the second IP packet of the voice control frame to the core network interface module 802. .
  • the core network interface module 801 obtains a voice control frame GTPU message from the second IP packet of the voice control frame, and sends the voice control frame GTPU message to the core network through the public network.
  • the MS803 encapsulates the voice frame into a voice frame IP packet according to the first IP address, the second IP address, and the second port number, and sends the voice frame IP packet to the WiFi interface module 802.
  • the WiFi interface module 802 obtains a voice frame IP packet according to the first IP address, obtains a second IP packet of the voice frame after identifying the second port number, and sends a second IP packet of the voice frame to the core network interface module 801.
  • the core network interface module 801 obtains a voice frame GTPU message from the second IP packet of the voice frame; the GTPU sends the voice frame through the public network to the core network.
  • the above process is an interaction process between the core network interface module 801, the WiFi interface module 802, and the MS 803. The above process will be described in detail below.
  • the MS 803 resides in the WiFi network, and obtains the first IP address allocated by the WiFi network, adds the first port number of the NAS signaling to obtain the first UDP packet, and fills the first UDP packet with the first IP address.
  • the address obtains the first IP packet, and sends the first IP packet to the WiFi interface module 802.
  • the WiFi interface module 802 removes the first IP address obtained by the first IP address from the first IP address to obtain the first UDP packet; after identifying the first port number, the first port number in the first UDP packet is removed.
  • NAS signaling The NAS signaling is sent to the core interface module 803.
  • the core network interface module 801 sends the NAS signaling to the core network through the public network.
  • the core network interface module 801 performs NAS signaling interaction with the core network through the public network.
  • the core network interface module 801 obtains PDP context information including a second IP address assigned by the core network, and sends the PDP context information to the WiFi interface module 802.
  • the WiFi interface module 802 transmits the PDP context information obtained from the core network interface module to the MS 803.
  • the MS 803 obtains PDP context information including the second IP address assigned by the core network through the WiFi interface module 802.
  • the MS803 encapsulates the voice control frame into the first UDP packet of the voice control frame or the first TCP packet of the voice control frame.
  • the first UDP packet of the voice control frame or the first TCP packet of the voice control frame is filled with the second IP address.
  • the second IP packet of the voice control frame is added; the second port number of the voice control frame is added to be the second UDP packet of the voice control frame; and the second UDP packet of the voice control frame is filled with the first IP address to obtain the voice.
  • Controlling the frame IP packet sending the voice control frame IP packet to the WiFi interface module 802; the WiFi interface module 802 removes the first IP address according to the voice control frame IP packet obtained by the first IP address, and obtains the second UDP packet of the voice control frame.
  • the IP packet is sent to the core network interface module 801.
  • the core network interface module 801 adds the GTPU corresponding header to the GTPU corresponding to the second IP packet of the voice control frame to obtain the voice control frame GTPU packet. Control frame GTPU message to core network.
  • the MS 803 encapsulates the voice frame into a voice frame RTP message, and then encapsulates the voice frame RTP message into the first UDP packet of the voice frame.
  • the first UDP packet in the voice frame is filled with the second IP address to obtain the second IP address of the voice frame.
  • the second UDP packet is added to the second IP packet of the voice frame to obtain the second UDP packet of the voice frame.
  • the second UDP packet of the voice frame is filled with the first IP address to obtain the voice packet IP packet, and the voice frame IP packet is sent.
  • the WiFi interface module 802 removes the first IP address of the voice frame IP packet obtained according to the first IP address to obtain the second UDP packet of the voice frame; and the second UDP packet of the voice frame.
  • the second port number of the second UDP packet of the voice frame is removed, and the second IP packet of the voice frame is obtained.
  • the second IP packet of the voice frame is sent to the core network interface module 801.
  • the core network interface module 801 adds the GTPU corresponding to the GTPU header in the second IP packet of the voice frame to obtain the GTPU packet of the voice frame, and sends the GTPU packet of the voice frame to the core network through the public network.
  • the MS 803 adds a third port number to the non-voice data, and sends an IP packet including non-voice data to the WiFi interface module 802.
  • the WiFi interface module 802 directly recognizes the IP packet of the third port number and directly interacts with the public network for non-speech data.
  • Step 901 The NAS signaling interaction.
  • a transmission protocol model of the wireless side of the NAS signaling transmission The physical layer of the MS is the WiFi PHY, and the protocol layer is WiFi MAC, IP, UDP, and non-access stratum NAS from bottom to top.
  • the physical layer of the AP is the WiFi PHY, and the protocol layers are WiFi MAC, IP, and UDP.
  • the MS adds the first port number of the NAS signaling to obtain the first UDP packet; the first UDP packet is filled with the first IP address to obtain the first IP packet; and the first IP packet is processed by the WiFi MAC protocol and the WiFi PHY protocol. After transmission to the AP.
  • the first IP address obtained by the first IP address is removed from the first IP address to obtain the first UDP packet.
  • the first port number in the first UDP packet is removed, and the NAS signaling is obtained.
  • the NAS signaling is sent to the core network through the public network.
  • the core network sends a UDP packet including the second IP address.
  • Step 902 Send a voice control frame.
  • the voice control frame is encapsulated into a voice control frame IP packet sent by the MS to the AP.
  • the AP decapsulates the corresponding text and then generates it to the core network through the public network.
  • the specific steps are the same as 502.
  • Step 903 Send a voice frame.
  • the MS encapsulates the voice frame into a voice IP packet and sends it to the AP. After decapsulating the AP, the AP obtains the corresponding packet and then sends it to the core network through the public network. For details, see step 503. Through steps 901-903, the MS contacts the AP through WiFi, and communicates with the core network through the public transmission network, and the MS interacts with the core network for the voice frame.
  • the idea of the second embodiment is the same as that of the first embodiment. The only difference is that the interaction between the NAS layer signaling and the core network is implemented in the AP, and the resource management table is maintained in the AP.
  • the resource management table records the PDP context information of the MS residing in the AP, which reduces the software complexity of the MS. That is, the AP directly interacts with the core network for NAS signaling to obtain a second IP address.
  • Today's MS already has a lot of SIP-based VoIP client software, and all the interactions with the core network are implemented on the AP. These VoIP software can be used directly without major modifications.
  • the MS transmits the voice data through the WiFi interface and the WiFi interface module in the device for implementing the voice service according to the first IP address
  • the core network interface module transmits the voice data through the public transmission network and the core network according to the second IP address.
  • the MS and the core network can exchange voice data to ensure the transmission quality of the voice data.
  • the transmission of voice data by the core network to the mobile terminal through the core network interface module and the WiFi interface module is the reverse process of the above process, and will not be described again.
  • WiFi network data service is widely used in the home environment.
  • the existing WiFi wireless router is used for WiFi-based voice service and transmitted through the core network. Compared with the traditional public network, it can prevent delay jitter and congestion and ensure voice quality. At the same time, operators can manage mobile terminals through the core network.
  • the mature SIP-based VoIP client software on the market can be applied to the technical solution in the present invention, and the present invention is easy to popularize and use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

L'invention concerne un procédé permettant de mettre en oeuvre des services vocaux. Selon le procédé: un point d'accès (PA) exécute une interaction de signalisation avec un serveur d'accès réseau (SAR) avec un réseau central par l'intermédiaire d'un réseau public; le point d'accès transmet des messages Tunnel Protocol User-plane (GTPU) de service général de radiocommunication par paquets (GPRS) de trames d commande vocale au réseau central par l'intermédiaire du réseau public; le point d'accès (PA) transmet des messages GTPU des trames vocales au réseau central par l'intermédiaire du réseau public. Un terminal mobile, un dispositif et un système permettant de mettre en oeuvre des services vocaux sont égalements décrits dans la présente invention. Grâce au mode de réalisation de l'invention, la qualité de la conversation des services vocaux peut être garantie.
PCT/CN2011/073675 2011-05-05 2011-05-05 Procédé, terminal mobile, dispositif et système pour mise en oeuvre de services vocaux WO2011120458A2 (fr)

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PCT/CN2011/073675 WO2011120458A2 (fr) 2011-05-05 2011-05-05 Procédé, terminal mobile, dispositif et système pour mise en oeuvre de services vocaux
CN201180000684.XA CN102282886B (zh) 2011-05-05 2011-05-05 一种实现语音业务的方法、移动终端、装置和系统

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CN103581138B (zh) * 2012-08-01 2017-02-08 京信通信系统（中国）有限公司 一种数据传输方法和设备
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CN1951034A (zh) * 2004-08-05 2007-04-18 Lg电子株式会社 无线通信系统中协议分组之间的区分
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