WO2013091198A1 - Procédé et dispositif prenant en charge une communication cryptée - Google Patents

Procédé et dispositif prenant en charge une communication cryptée Download PDF

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Publication number
WO2013091198A1
WO2013091198A1 PCT/CN2011/084375 CN2011084375W WO2013091198A1 WO 2013091198 A1 WO2013091198 A1 WO 2013091198A1 CN 2011084375 W CN2011084375 W CN 2011084375W WO 2013091198 A1 WO2013091198 A1 WO 2013091198A1
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WO
WIPO (PCT)
Prior art keywords
bsc
interface
terminal
signaling point
point corresponding
Prior art date
Application number
PCT/CN2011/084375
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English (en)
Chinese (zh)
Inventor
黎步松
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.)
Filing date
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/CN2011/084375 priority Critical patent/WO2013091198A1/fr
Priority to CN2011800034322A priority patent/CN102510768A/zh
Publication of WO2013091198A1 publication Critical patent/WO2013091198A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/03—Protecting confidentiality, e.g. by encryption
    • H04W12/033—Protecting confidentiality, e.g. by encryption of the user plane, e.g. user's traffic

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for supporting encrypted communications.
  • Various nodes in a wireless communication system such as a terminal, an air interface, a BSS (Base Station System), and a core network, are all likely to be intercepted to cause communication information to leak.
  • the end-to-end encryption communication method is to enable the packets sent by the two parties to be encrypted first by using an appropriate encryption algorithm.
  • the encryption algorithm needs to be consistent at both ends of the transmission and reception, and the receiving end decrypts the corresponding algorithm and then hands it to the voice decoder for processing.
  • the entire network transmission process Any processing of voice packets is no longer performed and is not expected to be recognized by any device.
  • the calling and calling terminal of the call sends a key for the call by the Key Management Center (KMC) in the call establishment process to realize one-to-one secret.
  • KMC Key Management Center
  • the voice transmission between the air interface and the A network and the network equipment of the core network adopts encryption or transparent transmission mode to ensure that the encrypted voice packets of the terminal can be correctly transmitted between the two nodes, and the encrypted voice packets of the terminal are not destroyed.
  • the A interface has two networking modes: TDM (Time Division Multiplex) and IP.
  • TDM Time Division Multiplex
  • IP IP-based networking mode
  • the inventor found that when the encrypted communication is performed in the A-interface IP-based networking mode, the terminal voice packet is easily tapped on the core network side, and the encrypted soft disk and the non-encrypted voice packet cannot be blocked in the MSS (Mobile Soft Switch).
  • MSS Mobile Soft Switch
  • An aspect of the present invention provides a method for supporting encrypted communication in an IP communication network, Methods include:
  • the first base station controller BSC corresponding to the calling terminal and the second BSC corresponding to the called terminal respectively determine the between the calling terminal and the called terminal according to the service option of the encrypted communication of the calling terminal and the called terminal. Communication is switched from normal communication to encrypted communication;
  • the first BSC and the second BSC respectively send a hard handover request message to the mobile softswitch MSS, requesting that the first BSC and the second BSC are respectively switched from the signaling point corresponding to the IP-based A interface to the time division multiplexing TDM mode.
  • the first BSC and the second BSC After receiving the hard handover notification message sent by the MSS, the first BSC and the second BSC switch to the signaling point corresponding to the TDM mode A interface, and start the voice codec device TC, where the TC is used in the TDM mode.
  • the first BSC and the second BSC respectively notify the calling terminal and the called terminal to communicate in an encrypted manner.
  • Another aspect of the present invention provides a base station controller BSC, where the BSC is configured with an IP A interface and a time division multiplexing TDM mode A interface, including:
  • the processor is configured to: according to the encrypted communication service option of the terminal, determine that the terminal is switched from the normal communication to the encrypted communication, and control the BSC to be switched by the signaling point corresponding to the IP-based A interface to the time-division multiplexed TDM mode A interface. Signaling point and start the voice codec device TC;
  • the transmitter is configured to send a hard handover request message to the mobile softswitch MSS, requesting to switch the BSC from the signaling point corresponding to the IP-based A interface to the signaling point corresponding to the TDM mode A interface, where the hard handover request message is Carrying the Cell ID of the corresponding cell under the signaling point corresponding to the TDM mode A interface, and sending an encrypted communication notification message to the terminal, informing the terminal to use the encrypted mode to communicate;
  • a receiver configured to receive a hard handover notification message sent by the MSS, where the hard handover notification is The message is used to notify the BSC to switch to the signaling point corresponding to the TDM mode A interface; the voice codec device TC: the inter-system link protocol ISLP protocol for the terminal encrypted voice packet in the TDM mode.
  • a further aspect of the present invention provides a mobile softswitch MSS, where the MSS includes: a receiver: configured to receive a hard handover request message sent by a base station controller BSC, where the hard handover request message carries a terminal in time division multiplexing TDM The Cell ID of the corresponding cell under the signaling point corresponding to the mode A interface; and
  • the transmitter is configured to send a hard handover notification message to the BSC, where the hard handover notification message is used to notify the BSC to switch from a signaling point corresponding to the IP A interface to a signaling point corresponding to the TDM mode A interface.
  • FIG. 1 is a structural diagram of a network supporting encrypted communication according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for supporting encrypted communication according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for supporting encrypted communication according to another embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a base station controller according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a mobile softswitch according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS
  • the system transmits on the A interface.
  • RTP Real-time Transport Protocol
  • TC Transcode, voice codec device
  • MSS Mobile Soft Switch
  • the core network side is based on the X of the RTP frame.
  • the field can identify the encrypted communication of the business plane and the voice packet of the ordinary communication. In this case, it is easy to be concentrated and eavesdropped, and the end-to-end encryption requirement cannot be met.
  • the embodiment of the present invention provides a method and an apparatus for supporting encrypted communication in an A-interface IP-based networking mode.
  • a network structure diagram for supporting encrypted communication according to an embodiment of the present invention is provided in a BSC (Base Station).
  • the A-interface that supports the TDM (Time Division Multiplex) mode is configured between the controller and the MSS.
  • the voice codec device TC is configured in the BSS.
  • the BSC supports both the IP-based A interface and the TDM mode.
  • a interface In the wireless communication system, the signaling point can be used to uniquely identify one BSC.
  • two A interfaces are configured between the BSC and the MSS, two signaling points can be configured in the BSC, that is, IP A.
  • the signaling point corresponding to the interface and the signaling point corresponding to the TDM mode A interface corresponds to the IP-based A interface and the TDM-type A interface respectively. It appears that there are two BSCs in the MSS. .
  • the terminal MS When the terminal MS is in normal communication, it is registered in the cell corresponding to the signaling point corresponding to the IP-based A interface, and uses the signaling and service channel under the IP-based A interface.
  • the terminal triggers the encrypted communication, the terminal sends a message to notify the BSC, and the BSC passes the standard handover. The process notifies the core network to switch.
  • the target of the handover is the signaling point corresponding to the TDM mode A interface, and the terminal uses the encrypted communication path of the TDM mode to perform encrypted communication.
  • the embodiment of the invention provides a method for supporting encrypted communication in an IP communication network, as shown in FIG. 2, which is a specific step of the method.
  • Step 201 The first BSC corresponding to the calling terminal and the second BSC corresponding to the called terminal respectively determine, between the calling terminal and the called terminal, according to the service option of the encrypted communication of the calling terminal and the called terminal.
  • the communication is switched from normal communication to encrypted communication.
  • Step 202 The first BSC and the second BSC respectively send a hard handover request message to the mobile softswitch MSS, requesting that the first BSC and the second BSC are respectively corresponding to the IP-based A interface.
  • the signaling point is switched to the signaling point corresponding to the time division multiplexing TDM mode A interface, where the hard handover request message carries the calling terminal and the called terminal respectively under the signaling point corresponding to the TDM mode A interface.
  • the Cell ID of the corresponding cell The Cell ID of the corresponding cell.
  • the calling terminal and the called terminal may actively send location information to the corresponding BSC, and the first BSC and the second BSC may obtain the calling terminal according to the location information reported by the calling terminal and the called terminal respectively.
  • Step 203 The MSS sends a hard handover notification message to the first BSC and the second BSC, where the hard handover notification message is used to notify the first BSC and the second BSC to switch to the signaling point corresponding to the TDM mode A interface.
  • Step 204 The first BSC and the second BSC switch to the signaling point corresponding to the TDM mode A interface, and start the voice codec device TC, where the TC is used for the ISLP of the encrypted voice packet of the calling terminal and the called terminal in the TDM mode.
  • System Link Protocol protocol processing.
  • Step 205 The first BSC and the second BSC respectively notify the calling terminal and the called terminal to communicate in an encrypted manner.
  • Step 206 The calling terminal and the called terminal perform encrypted communication.
  • the foregoing embodiment may further include the following steps:
  • Step 207 After the encrypted communication of the calling terminal and the called terminal ends, the first BSC and the second BSC respectively send a registration message to the MSS, where the registration message carries the calling terminal and the called terminal respectively in the IP A interface.
  • the registration process in step 207 is to facilitate the next call between the calling terminal and the called terminal to initiate an ordinary call under the signaling point corresponding to the IP A interface.
  • the TDM mode A interface is used between the BSS and the MSS, so that the voice packet is prevented from being concentrated on the core network side. Eavesdropping, enabling end-to-end encryption.
  • the calling terminal and the called terminal there are two ways for the calling terminal and the called terminal to establish encrypted communication: First, the calling terminal and the called terminal establish normal voice communication first, and then switch to encrypted communication after negotiation; second, the calling terminal directly The call is set to be encrypted communication, and the calling terminal and the called terminal establish a normal traffic channel with the MSS and obtain a key, and then switch to the encrypted communication. The following two embodiments correspond to the two methods respectively.
  • the embodiment of the present invention provides a method for supporting encrypted communication in an IP communication network.
  • the calling terminal and the called terminal first establish normal communication and then switch to encrypted communication.
  • the support encryption provided in this embodiment is provided.
  • Step 301 The calling terminal MS1 establishes normal communication with the called terminal MS2, and the IP-based interface is used between the first BSC and the MSS corresponding to the calling terminal and the second BSC and the MSS corresponding to the called terminal.
  • the corresponding BSC In the IP-based networking mode of the A-interface, by default, when all terminals are powered on, the corresponding BSC sends a registration message to the MSS, and the terminal is registered in the cell under the IP signaling point of the BSC.
  • the IP address A interface is used between the BSC and the MSS when the calling terminal and the called terminal are registered in the cell corresponding to the signaling point corresponding to the IP-based A interface.
  • Step 302 The calling terminal and the called terminal initiate an encrypted communication, and negotiate a key with the KMC.
  • the calling terminal and the called terminal respectively perform service negotiation with the corresponding BSC.
  • Step 304 The first BSC and the second BSC may determine, according to the service option Ox80b0 of the encrypted communication of the calling terminal and the called terminal, that the communication between the calling terminal and the called terminal is switched from normal communication to encrypted communication. ,
  • Step 305 The first BSC and the second BSC respectively send a Handoff Required message to the MSS, and the first BSC and the second BSC are respectively switched from the signaling point corresponding to the IP-based A interface to the letter corresponding to the TDM mode A interface.
  • Order point, Handoff Required message The cell ID of the cell corresponding to the signaling point corresponding to the TDM mode A interface is not carried by the calling terminal and the called terminal.
  • the calling terminal and the called terminal can actively send location information to the corresponding BSC, and the BSC1 and the BSC2 can obtain the calling terminal and the called terminal according to the location information reported by the calling terminal and the called terminal respectively.
  • Step 306 The MSS sends a Handoff Request message to the first BSC and the second BSC to notify the first BSC and the second BSC to switch to the signaling point corresponding to the TDM mode A interface.
  • Step 307 The first BSC and the second BSC switch to the signaling point corresponding to the TDM mode A interface, and start the voice codec device TC, where the TC is used for the ISLP protocol processing of the encrypted voice packet of the calling terminal and the called terminal in the TDM mode. .
  • Step 308 The first BSC and the second BSC respectively send a Service Connect Msg message to the calling terminal and the called terminal, to notify the calling terminal and the called terminal to communicate in an encrypted manner, and the Service Connect Msg message carries an encrypted communication service option.
  • Step 309 The calling terminal and the called terminal send the first BSC and the second BSC, respectively.
  • the Service Connect Complete message confirms the start-up secret communication.
  • Step 310 The calling terminal and the called terminal encrypt the communication.
  • the foregoing embodiment may further include the following steps:
  • Step 311 After the encrypted communication ends, the first BSC and the second BSC respectively send a registration message to the MSS, where the registration message respectively carries the calling terminal and the called terminal corresponding to the signaling point corresponding to the IP A interface. Cell ID of the cell.
  • the registration process in step 311 is to facilitate the next call between the calling terminal and the called terminal to initiate an ordinary call under the signaling point corresponding to the IP A interface.
  • the TDM mode A interface is used between the BSS and the MSS, so that the voice packet is prevented from being concentrated on the core network side. Eavesdropping, enabling end-to-end encryption.
  • Another embodiment of the present invention provides a method for supporting encrypted communication in an IP communication network, where the calling terminal directly sets the call as an encrypted communication, as shown in FIG. 4, which is a flowchart of a method for supporting encrypted communication provided in this embodiment. .
  • Step 401 The calling terminal initiates a normal communication call, but sets the call as an encrypted communication. This setting does not notify the first BSC corresponding to the calling terminal, and the IP-based A interface is selected between the second BSC and the MSS to establish normal communication.
  • the corresponding BSC In the IP-based networking mode of the A-interface, by default, when all terminals are powered on, the corresponding BSC sends a registration message to the MSS, and the terminal is registered in the cell under the IP signaling point of the BSC.
  • Step 402 The second BSC corresponding to the called terminal pages the called party according to the normal communication, and selects the IPized A interface between the second BSC and the MSS to establish the normal communication.
  • Step 403 The calling terminal performs key key negotiation with the KMC according to the encrypted communication identifier recorded in step 401.
  • Step 404 The KMC authenticates the called terminal and performs key negotiation.
  • Step 405 After the key negotiation succeeds, the calling terminal and the called terminal obtain the key sent by the KMC, and notify the first BSC and the second BSC by using the Service Request Msg message respectively, and the message carries the service option Ox80bO of the encrypted communication.
  • the calling terminal and the called terminal respectively perform service negotiation with the corresponding BSC.
  • Step 406 The first BSC and the second BSC may determine, according to the service option Ox80bO of the encrypted communication sent by the calling terminal and the called terminal, that the communication between the calling terminal and the called terminal is switched from normal communication to encryption. Communication.
  • Step 407 The first BSC and the second BSC respectively send a Handoff Required message to the MSS, and the first BSC and the second BSC are respectively switched from the signaling point corresponding to the IP-based A interface to the letter corresponding to the TDM mode A interface.
  • the Handoff Required message carries the Cell ID of the cell corresponding to the signaling point corresponding to the TDM mode A interface between the calling terminal and the called terminal.
  • the calling terminal and the called terminal may actively send the location to the corresponding BSC.
  • the information, BSC1 and BSC2 can obtain the Cell ID of the cell corresponding to the signaling point corresponding to the TDM mode A interface between the calling terminal and the called terminal according to the location information reported by the calling terminal and the called terminal, respectively.
  • Step 408 The MSS sends a Handoff Request message to the first BSC and the second BSC to notify the first BSC and the second BSC to switch to the signaling point corresponding to the TDM mode A interface.
  • Step 409 The first BSC and the second BSC switch to the signaling point corresponding to the TDM mode A interface, and start the voice codec device TC, where the TC is used for the ISLP protocol processing of the encrypted voice packet of the calling terminal and the called terminal in the TDM mode. .
  • Step 410 The first BSC and the second BSC respectively send a Service Connect Msg message to the calling terminal and the called terminal, to notify the calling terminal and the called terminal to communicate in an encrypted manner, and the Service Connect Msg message carries an encrypted communication service option.
  • Step 411 The calling terminal and the called terminal respectively send a Service Connect Complete message to the first BSC and the second BSC to confirm the activation of the secret communication.
  • Step 412 The calling terminal and the called terminal encrypt the communication.
  • the foregoing embodiment may further include the following steps:
  • Step 413 After the encrypted communication ends, the first BSC and the second BSC respectively send a registration message to the MSS, where the registration message respectively carries the calling terminal and the called terminal corresponding to the signaling point corresponding to the IP A interface. Cell ID of the cell.
  • the registration process in step 413 is to facilitate the next call between the calling terminal and the called terminal to initiate an ordinary call under the signaling point corresponding to the IP A interface.
  • the TDM mode A interface is used between the BSS and the MSS, so that the voice packet is prevented from being tapped on the core network side. End-to-end encryption is implemented.
  • the embodiment of the present invention provides a base station controller BSC, where the BSC is configured with an IP A interface and a TDM interface A interface, including:
  • the processor 501 is configured to determine, according to the encrypted communication service option of the terminal, that the terminal is cut by the normal communication. Switching to the encrypted communication, and controlling the BSC to be switched by the signaling point corresponding to the IP-based A interface to the signaling point corresponding to the TDM mode A interface and starting the voice codec device TC;
  • the transmitter 502 is configured to send a hard handover request message to the MSS, requesting to switch the BSC from a signaling point corresponding to the IP-based A interface to a signaling point corresponding to the TDM mode A interface, where the hard handover request message carries Determining, by the terminal, the Cell ID of the corresponding cell under the signaling point corresponding to the TDM mode A interface, and sending an encrypted communication notification message to the terminal, notifying the terminal to use the encrypted mode to communicate;
  • the receiver 503 is configured to receive a hard handover notification message sent by the MSS, where the hard handover notification message is used to notify the BSC to switch to a signaling point corresponding to the TDM mode A interface.
  • Voice codec device TC504 Used for ISLP protocol processing of terminal encrypted voice packets in TDM mode.
  • the receiver is further configured to receive location information that is actively reported by the terminal, where the processor is further configured to obtain, according to the location information, the signaling point of the terminal corresponding to the TDM mode A interface. Corresponding Cell ID.
  • the transmitter 502 is further configured to send a registration message to the MSS, where the registration message carries the Cell ID of the corresponding cell under the signaling point corresponding to the IP-based A interface.
  • the base station system uses an IP-based A interface in normal communication.
  • the TDM mode A interface is used between the BSS and the MSS, so that the voice packet is prevented from being tapped on the core network side, and the terminal is implemented. End encryption.
  • the embodiment of the present invention provides a mobile softswitch MSS.
  • the MSS includes:
  • the receiver 601 is configured to receive a hard handover request message sent by the BSC, where the hard handover request message carries a cell ID of a cell corresponding to a signaling point corresponding to the TDM mode A interface;
  • the transmitter 602 is configured to send a hard handover notification message to the BSC, where the hard handover notification is sent The message is used to notify the BSC to switch from the signaling point corresponding to the IP-based A interface to the signaling point corresponding to the TDM mode A interface.
  • the receiver 601 is further configured to receive a registration message sent by the BSC, where the registration message carries a Cell ID of a cell corresponding to the signaling point corresponding to the IP-based A interface.
  • the TDM mode A interface is used between the BSS and the MSS, so that the voice packet is prevented from being tapped on the core network side, and the terminal is implemented. End encryption.

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

Abstract

L'invention concerne un procédé et un dispositif prenant en charge une communication cryptée dans un réseau de communication IP, qui peuvent empêcher un paquet vocal de terminal d'être intercepté d'une manière centralisée et réaliser l'objectif de communication cryptée de bout en bout. Un premier contrôleur de station de base (BSC) correspondant à un terminal appelant et un second BSC correspondant à un terminal appelé déterminent respectivement que la communication entre le terminal appelant et le terminal appelé passe d'une communication commune à une communication cryptée ; le premier BSC et le second BSC envoient respectivement à un commutateur logiciel mobile (MSS) un message de requête de commutation avec coupure afin de demander de commuter le premier BSC et le second BSC d'un point de signalisation correspondant à une interface A basée sur IP à un point de signalisation correspondant à une interface A à mode de multiplexage par répartition temporelle (TDM) respectivement ; le premier BSC et le second BSC commutent vers le point de signalisation correspondant à l'interface A à mode TDM et font démarrer un dispositif de codage/décodage vocal (TC) ; et le premier BSC et le second BSC notifient au terminal appelant et au terminal appelé d'utiliser une communication cryptée respectivement.
PCT/CN2011/084375 2011-12-21 2011-12-21 Procédé et dispositif prenant en charge une communication cryptée WO2013091198A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2011/084375 WO2013091198A1 (fr) 2011-12-21 2011-12-21 Procédé et dispositif prenant en charge une communication cryptée
CN2011800034322A CN102510768A (zh) 2011-12-21 2011-12-21 一种支持加密通信的方法和装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2011/084375 WO2013091198A1 (fr) 2011-12-21 2011-12-21 Procédé et dispositif prenant en charge une communication cryptée

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WO2013091198A1 true WO2013091198A1 (fr) 2013-06-27

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CN105025471A (zh) * 2014-04-21 2015-11-04 中兴通讯股份有限公司 被叫终端、主叫终端、语音通信方法及系统
CN106341225B (zh) * 2016-09-19 2019-07-23 杭州字节信息技术有限公司 一种umts移动终端电路域语音加密通信技术实现方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1886974A (zh) * 2003-11-27 2006-12-27 西门子公司 用于加密电话通话的安全模块
CN101674577A (zh) * 2009-10-14 2010-03-17 华为技术有限公司 一种加密数据透明传输的方法及媒体网关控制中心

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* Cited by examiner, † Cited by third party
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CN100433915C (zh) * 2005-08-19 2008-11-12 华为技术有限公司 一种提高3g网络系统到2g网络系统切换成功率的方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1886974A (zh) * 2003-11-27 2006-12-27 西门子公司 用于加密电话通话的安全模块
CN101674577A (zh) * 2009-10-14 2010-03-17 华为技术有限公司 一种加密数据透明传输的方法及媒体网关控制中心

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