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WO2006032213A1 - Structure de reseau sans fil et procede de mise en oeuvre de transmission de donnees par application de la structure de reseau sans fil - Google Patents

Structure de reseau sans fil et procede de mise en oeuvre de transmission de donnees par application de la structure de reseau sans fil Download PDF

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Publication number
WO2006032213A1
WO2006032213A1 PCT/CN2005/001547 CN2005001547W WO2006032213A1 WO 2006032213 A1 WO2006032213 A1 WO 2006032213A1 CN 2005001547 W CN2005001547 W CN 2005001547W WO 2006032213 A1 WO2006032213 A1 WO 2006032213A1
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WIPO (PCT)
Prior art keywords
server
ugw
user
network
rts
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PCT/CN2005/001547
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English (en)
Chinese (zh)
Inventor
Bing Xu
Xingang Liang
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems

Definitions

  • the present invention relates to the field of mobile communication technologies, and in particular to a wireless network architecture and a method for implementing data transmission using a wireless network architecture.
  • the first generation of mobile communication systems is an analog cellular mobile communication system.
  • the main feature of this system is the frequency division multiplexing (FDMA) analog system, which greatly increases the system capacity due to frequency reuse.
  • FDMA frequency division multiplexing
  • the first generation of mobile communication systems have achieved great commercial success, but their drawbacks are also emerging: low spectrum utilization, limited service types, no high-speed data services, poor confidentiality, easy eavesdropping and hacking, high equipment costs, and Large size, heavy weight, etc.
  • the second generation mobile communication system is a digital cellular communication system that improves spectrum utilization, supports multiple service services, and is compatible with ISDN, etc., compared to the first generation mobile communication system.
  • the second generation mobile communication system aims to transmit voice and low speed data services, and is therefore also called a narrowband digital communication system.
  • the third generation mobile communication system is broadband multimedia. Communication.
  • the third generation mobile communication system is a multimedia service that can provide multiple types and high quality.
  • a system that enables global seamless coverage, global roaming capabilities, compatibility with fixed networks, and any type of communication with small portable terminals at any time and any place. Due to its many advantages, operators, manufacturers and users around the world have a strong interest in this.
  • Universal Mobile Telecommunications System is a third-generation mobile communication system using Wideband Code Division Multiple Access (WCDMA) air interface technology. It is also called UMTS system as WCDMA communication. system. The following takes UMTS as an example.
  • WCDMA Wideband Code Division Multiple Access
  • FIG. 1 shows the network architecture of the prior art R5 based UMTS.
  • the UMTS system adopts a structure similar to that of the second generation mobile communication system, and is composed of a UMTS Territorial Radio Access Network (CN) and a user equipment (MS), and the UMTS system also
  • CN UMTS Territorial Radio Access Network
  • MS user equipment
  • GSM Global System for Mobile Communications
  • BSS Wireless Subsystem
  • UTRAN is used to handle all wireless related functions
  • CN handles all voice calls and data connections in the UMTS system and implements switching and routing functions with external networks.
  • the CN is logically divided into a CS (Circuit Switched Domain) and a Packet Switched Domain (PS) to support voice and data services, respectively.
  • CS Circuit Switched Domain
  • PS Packet Switched Domain
  • the CS domain includes nodes such as a mobile switching center server (MSC-Server), a media gateway (MGW), and a gateway mobile services switching center server (GMSC-Server), wherein the MSC-Server is used to transmit control plane data of the CS domain to implement mobile SME management, call control, authentication and encryption functions, GMSC-Server is used to implement GMSC call control and mobility control control plane functions, such as implementing inbound call routing and external network communication to complete inter-network settlement.
  • MSC-Server mobile switching center server
  • MGW media gateway
  • GMSC-Server gateway mobile services switching center server
  • the MGW is used to implement transmission of user plane data;
  • the PS domain includes a serving general packet radio service support node (SGSN), a gateway general packet radio service support node (GGSN), and the like, wherein the SGSN is used to transmit control plane data of the PS domain and User face data, implementation Routing forwarding, mobility management, session management, authentication and encryption, etc.
  • the GGSN is mainly responsible for interfacing with the external network. At the same time, the GGSN is also responsible for realizing the transmission of user plane data.
  • the Home Network Server (HSS) is used to store user subscription information.
  • the Device Identification Register (EIR) is used to store identification information for system devices.
  • the thin solid line in Fig. 1 indicates control plane data, and the thick solid line indicates user plane data.
  • FIG. 2 shows the prior art URTAN network structure.
  • the URTAN contains one or more Radio Network Subsystems (R S ).
  • An RNS consists of a Radio Network Controller (R C ) and one or more base stations (NodeBs).
  • R C Radio Network Controller
  • NodeB and R C are connected through the Iub interface.
  • R C is interconnected by Iur, and Iur can be connected through a direct physical connection between R Cs or through a transport network.
  • the RNC is used to allocate and control the radio resources of the NodeB connected or related to it, mainly to complete connection establishment and disconnection, handover, macro diversity, radio resource management control, power control, and multicast broadcast control functions; Broadcast and system access control functions, mobility management functions such as handover and RNC migration, and macro resource management and control functions such as macro aggregation, power control, and radio bearer allocation.
  • NodeB is a base station of a WCDMA system, that is, a wireless transceiver, including a wireless transceiver and a baseband processing component.
  • Its main function is to control and allocate resources of a cell, and complete data stream conversion between the Iub interface and the Uu interface, for example, Frequency, modulation, channel coding and despreading, demodulation, channel decoding, and also the mutual conversion of baseband signals and radio frequency signals, and also participate in some radio resource management.
  • RRC radio resource control
  • the RC communicates with the MSC-Server in the CS domain in the core network or the SGSN in the PS domain according to the service applied by the user, MSC-Server or SGSN (hereinafter abbreviated as MSC-Server/SGSN) )
  • MSC-Server/SGSN Radio Access Bearer
  • the user plane bearer of the access network that is, the radio bearer (RB) is established accordingly.
  • the user establishes a core network user plane bearer with the MGW through the NodeB and the RNC, and implements the function of the user plane protocol stack.
  • the user establishes the NodeB and the RNC with the SGSN.
  • the core network user plane carries the function of the user plane protocol stack through the GGSN.
  • the RNC needs to support both the control plane protocol stack and the user plane protocol stack.
  • the SGSN needs to support both the control plane protocol stack and the user plane protocol stack. That is, in a logical function node, the requirements of the control plane and the user plane protocol stack must be supported at the same time.
  • the requirements of the user plane protocol stack are more demanding, some functions require special hardware support; and the control plane protocol stack processing requirements are not high, and can be implemented by a general method.
  • the demand for user-side capacity growth is more urgent, while the demand for control plane capacity growth is slower. Since the processing requirements of the control plane and the user plane are different, the communication capability requirements of the control plane and the user plane are far apart. Thus, if a node must support both the control plane and the user plane protocol stack, it not only causes intra-UMTS transmission.
  • the main purpose of the present invention is to provide three wireless network architectures and methods for implementing data transmission using the three wireless network architectures, so that user plane data and control plane data are completed. Fully separated, so that the UMTS network can use transmission resources more efficiently, and make the networking more convenient, and more suitable for the development of future communication services and communication technologies.
  • a wireless network architecture including a mobile switching center server MSC-Server, the wireless network architecture further comprising: a wireless transceiver RTS, a wireless access network server RAN-Server for implementing a radio network controller RNC control plane function, a unified gateway UGW for implementing an RNC user plane function, an SGSN user plane function, and an MGW function, and a service general packet radio service support node server SGSN-Server for implementing a service general packet radio service support node SGSN control plane function, where
  • the RTS is configured to implement wireless transmission and reception of user plane data and control plane data with a user terminal
  • the RAN-Server is configured to receive control plane data from the user terminal forwarded by the UGW, establish a transmission bearer of the radio resource control RC between the user terminal and the user plane data bearer of the access network by using the UGW and the RTS, The RTS establishes a wireless link with the user terminal to implement wireless network layer transmission;
  • the SGSN-Server is configured to receive control plane data of the packet PS domain, verify that the user terminal that initiates the request is legal, and the core network is currently able to provide the user terminal with the required service, and establish a UGW to the target in the external network.
  • the user plane data transmission bearer of the gateway implements transmission network layer transmission;
  • the MSC-Server is configured to receive control plane data of the CS domain of the circuit, verify that the user terminal that initiates the request is legal, and the core network is currently able to provide the user terminal with the required service, and establish a UGW to the target in the external network.
  • the user plane data transmission bearer of the gateway implements transmission network layer transmission;
  • the UGW is used to forward control plane data from the user terminal to the RAN-Server, MSC-Server or SGSN-Server via the RTS, or to forward from the user end End user plane data to the target gateway in the external network.
  • the RTS and the RAN-Server use the RTS application protocol stack as the wireless network layer transport bearer, using SCTP and IP, or using the asynchronous transport mode ATM as the transport network layer bearer.
  • the Tt user part TtUP protocol stack is used as the radio network layer transmission bearer between the RTS and the UGW, using UDP and IP, or using ATM as the transport network layer bearer.
  • the UGW and the RAN-Server, the MSC-Server or the SGSN-Server use the ITU-T H.248 protocol stack or the IETF MEGACO protocol stack as the wireless network layer transport bearer, using SCTP and IP, Alternatively, use ATM as the transport network layer bearer.
  • the RTS, RAN-Server, SGSN-Server, MSC-Server and UGW are different logical nodes, which exist on the same or different physical nodes.
  • a wireless network architecture includes a circuit CS domain, and the wireless network architecture further includes: a wireless transceiver RTS, a radio access network server RAN-Server for implementing a radio network controller RNC control plane function, for implementing the RNC a unified gateway UGW for the user plane function and the SGSN user plane function, and a service general packet radio service support node server SGSN-Server for implementing the service general packet radio service support node SGSN control plane function, wherein
  • the RTS is configured to implement wireless transmission and reception of user plane data and control plane data with a user terminal
  • the RAN-Server is configured to receive control plane data from the user terminal that is forwarded by the UGW, establish a radio bearer between the UTR and the RTS, and perform a radio bearer between the user terminal and a user plane data bearer of the access network.
  • the RTS establishes a wireless link with the user terminal to implement wireless network layer transmission;
  • the SGSN-Server is configured to receive control plane data of the packet PS domain, and verify the initiation After the requested user terminal is legal and the core network is currently able to provide the user terminal with the required service, the user plane data transmission bearer of the UGW to the target gateway in the external network is established to implement transmission network layer transmission;
  • the UGW is configured to forward the control plane data from the user terminal to the RAN-Server>SGSN-Server or the CS domain via the RTS, or to forward the user plane data in the packet domain from the user terminal to the external network.
  • Target gateway or CS domain is configured to forward the control plane data from the user terminal to the RAN-Server>SGSN-Server or the CS domain via the RTS, or to forward the user plane data in the packet domain from the user terminal to the external network.
  • the CS domain includes at least a mobile switching center server MSC-Server and a media gateway MGW, where
  • the MSC-Server is configured to receive control plane data of the CS domain of the circuit, and prove that the user terminal that initiates the request is legal and the core network is currently able to provide the user terminal with the required service, and then establish the MGW to the external network.
  • the user plane data transmission bearer of the target gateway realizes transmission network layer transmission;
  • the MGW is configured to send the service data to the target gateway in the external network after receiving the CS domain service data from the user terminal that is forwarded by the UGW.
  • the RTS and the RAN-Server use the RTS application protocol stack as the wireless network layer transport bearer, using SCTP and IP, or using the asynchronous transport mode ATM as the transport network layer bearer.
  • the Tt user part TtUP protocol stack is used as the radio network layer transmission bearer between the RTS and the UGW, using UDP and IP, or using ATM as the transport network layer bearer.
  • the UGW and the RAN-Server, the SGSN-Server, and the MSC-Server use the ITU-T H.248 protocol stack or the IETF MEGACO protocol stack as the wireless network layer transmission bearer, using SCTP and IP, Alternatively, ATM is used as the transport network layer bearer; the standard TCP/IP protocol stack is used as the radio network layer transport bearer between the UGW and the MGW, or ATM is used as the transport network layer bearer.
  • a wireless network architecture includes a mobile switching center server MSC-Server, and the wireless network architecture includes at least: a wireless transceiver RTS, a radio access network server RAN-Server for implementing a radio network controller RNC control plane function a unified gateway UGW for implementing an RNC user plane function and a media gateway MGW function, a service general packet radio service support node server SGSN-Server for implementing a service general packet radio service support node SGSN control plane function, and for implementing an SGSN User plane function packet domain media gateway P-MGW, where
  • the RTS is configured to implement wireless transmission and reception of user plane data and control plane data with a user terminal
  • the RAN-Server is configured to receive control plane data from the user terminal that is forwarded by the UGW, establish a radio bearer between the UTR and the RTS, and perform a radio bearer between the user terminal and a user plane data bearer of the access network.
  • the RTS establishes a wireless link with the user terminal to implement wireless network layer transmission;
  • the MSC-Server is configured to receive control plane data of the CS domain of the circuit, verify that the user terminal that initiates the request is legal, and the core network is currently able to provide the user terminal with the required service, and establish a UGW to the target in the external network.
  • the user plane data transmission bearer of the gateway implements transmission network layer transmission;
  • the UGW is configured to forward the control plane data from the user terminal to the RAN-Servers MSC-Server or the SGSN-Server via the RTS, or to forward the user plane data from the user terminal to the target gateway or P in the external network.
  • -MGW Mobility Management Function
  • the SGSN-Server is configured to receive control plane data of the packet PS domain, and verify that the user terminal that initiates the request is legal and the core network is currently able to provide the user terminal with the required service, and then establish a P-MGW to the external network.
  • the user plane data transmission bearer of the target gateway realizes transmission network layer transmission;
  • the P-MGW configured to receive a packet domain forwarded by the UGW from a user terminal After the business data, the business data is directly sent to the target gateway in the external network.
  • the RTS and the RAN-Server use the RTS application protocol stack as the wireless network layer transport bearer, using SCTP and IP, or using the asynchronous transport mode ATM as the transport network layer bearer.
  • the Tt user part TtUP protocol stack is used as the radio network layer transmission bearer between the RTS and the UGW, using UDP and IP, or using ATM as the transport network layer bearer.
  • the UGW and the RAN-Server, the MSC-Server, and the SGSN-Server use the ITU-T H.248 protocol stack or the IETF MEGACO protocol stack as the wireless network layer transmission bearer, using SCTP and IP, Alternatively, use ATM as the transport network layer bearer.
  • the standard TCP/IP protocol stack is used between the UGW and the P-MGW as a radio network layer transport bearer, or ATM is used as a transport network layer bearer.
  • a method for implementing data transmission by using a first network architecture includes the following steps: a. After receiving an access request from a user terminal, the RAN-Server of the radio access network establishes an access wireless link and establishes a user terminal at the same time. Between the wireless control resource RRC connection; b, after receiving the service request from the user terminal, the RAN-Server establishes a wireless link for transmitting data, establishes a user data transmission bearer of the access network, and connects the user of the access network.
  • the information about the successful configuration of the data transmission bearer is sent to the control plane management server in the domain to which the request service belongs, and the control plane management server establishes a user data transmission bearer between the UGW and the target gateway in the external network;
  • the UGW After receiving the service data from the user terminal forwarded by the RTS, the UGW directly sends the service data to the target gateway in the external network to implement service data transmission.
  • the method for establishing an access wireless link in step a is:
  • the RAN-Server After receiving the access request, the RAN-Server determines that the current resource of the access network is sufficient to allow the user to be received according to the RRC algorithm, and directly sends configuration information to the RTS to establish and use. A wireless link that the terminal can access.
  • the method for establishing an RRC connection with the user terminal in step a is:
  • the RAN-Server sends configuration information to the RTS through the UGW, configures the radio layer 2 protocol stack in the RTS, establishes an RRC connection between the RAN-Server and the user terminal, and after the RRC connection is established, the RAN-Server passes the UGW and the RTS. Sending information that the RRC connection establishment is successful to the user terminal.
  • the method for establishing an RRC connection with the user terminal in step a is:
  • the RAN-Server sends configuration information to the UGW, configures the radio layer 2 protocol stack in the UGW, establishes an RRC connection between the RAN-Server and the user terminal, and after the RRC connection is established, the RAN-Server provides the user to the user through the UGW and the RTS.
  • the terminal sends information that the RRC connection is successfully established.
  • the step of establishing the wireless link for transmitting data includes the following steps: b: The RAN-Server receives the service request from the user terminal after being forwarded by the UGW, and then encapsulates the request, and then the request is sent through the UGW. Send to the control plane management server in the domain to which the service belongs;
  • the control plane management server determines that the user terminal is legal, and the core network is currently able to provide the user terminal with the required service, and then sends a radio access bearer establishment request to the RAN-Server via the UGW;
  • the RAN-Server After receiving the request in step b2, the RAN-Server directly sends configuration information to the RTS to establish a wireless link for transmitting data.
  • the method for establishing the user data transmission bearer of the access network is as follows: The RAN-Server sends configuration information to the RTS through the UGW, and configures the wireless in the RTS. Layer 2 protocol stack, establishing user data transmission of the access network Transfer bearing.
  • the method for establishing the user data transmission bearer of the access network is as follows:
  • the RAN-Server sends configuration information to the UGW, and configures the wireless layer 2 protocol in the UGW.
  • the stack establishes a user data transmission bearer of the access network.
  • the RAN-Server sends the information that the user data transmission bearer of the access network is successfully established by the UGW to the control plane management server in the domain to which the service belongs.
  • the method for establishing a user data transmission bearer between the UGW and the target gateway in the external network in step b is:
  • the control plane management server After receiving the information about the successful configuration of the user data transmission bearer of the access network, the control plane management server allocates the core network resources, sends configuration information to the UGW, and establishes a user data transmission bearer between the UGW and the target gateway in the external network.
  • control plane management server is a mobile switching center server MSC-Server; and for the service of the data domain, the control plane management server is a service general packet radio service support node server SGSN-Server.
  • a method for implementing data transmission by using a second wireless network architecture includes the following steps: a. After receiving an access request from a user terminal, the RAN-Server establishes an access wireless link and establishes an a radio control resource RRC connection between user terminals;
  • the RAN-Server After receiving the service request from the user terminal, the RAN-Server establishes a wireless link for transmitting data, and establishes a user data transmission bearer of the access network; and sends information about successful configuration of the user data transmission bearer of the access network to
  • the control plane management server in the domain to which the request service belongs is established by the control plane management server in the circuit domain to establish a user data transmission bearer between the MGW and the target gateway in the external network, and the control plane management server in the packet domain establishes the UGW and the external network.
  • the UGW After receiving the service data forwarded by the RTS from the user terminal, the UGW determines that The service data of the circuit domain is also the service data of the packet domain. If it is the service data of the packet domain, the service data is directly sent to the target gateway in the external network to implement the service data transmission. If it is the service data of the circuit domain, The service data is transmitted to the media gateway MGW, and the service data is directly sent by the MGW to the target gateway in the external network.
  • the method for establishing a wireless link that enables the user terminal to access in step a is:
  • the RAN-Server After receiving the access request from the user terminal forwarded by the RTS and the UGW, the RAN-Server determines that the current resource of the access network is sufficient to allow the user to be received according to the RRC algorithm, and directly sends configuration information to the RTS to establish an access wireless chain. road.
  • the method for establishing an RRC connection with the user terminal in step a is:
  • the RAN-Server sends configuration information to the RTS through the RTS and the UGW, configures the radio layer 2 protocol stack in the RTS, establishes an RRC connection between the RAN-Server and the user terminal, and after the RRC connection is established, the RAN-Server passes the UGW. And the RTS sends the information that the RRC connection establishment is successful to the user terminal.
  • the method for establishing an RRC connection with the user terminal in step a is:
  • the RAN-Server sends the configuration information to the UGW, configures the radio layer 2 protocol stack in the UGW, and establishes an RC connection between the RAN-Server and the user terminal. After the RRC connection is established, the RAN-Server provides the user to the user through the UGW and the RTS. The terminal sends information that the RRC connection is successfully established.
  • the step of establishing a wireless link for transmitting data includes the following steps: bl.
  • the RAN-Server receives the service request from the user terminal forwarded by the RTS and the UGW, encapsulates the service request, and then encapsulates the data through the UGW.
  • the request is sent to a control plane management server in the domain to which the service belongs;
  • the control plane management server determines that the user terminal is legal, and the core network is currently capable After providing the user terminal with the required service, the UGW sends a radio access bearer setup request to the RAN-Server;
  • the RAN-Server After receiving the request in step b2, the RAN-Server directly sends configuration information to the RTS to establish a wireless link for transmitting data.
  • the method for establishing the user data transmission bearer of the access network is as follows:
  • the RAN-Server sends the configuration information to the RTS through the UGW, and configures the wireless layer in the RTS. 2 protocol stack, establishing a user data transmission bearer of the access network.
  • the method for establishing the user data transmission bearer of the access network is as follows:
  • the RAN-Server sends configuration information to the UGW, and configures the wireless layer 2 protocol in the UGW.
  • the stack establishes a user data transmission bearer of the access network.
  • the RAN-Server sends the information that the user data transmission bearer of the access network is successfully established by the UGW to the control plane management server in the domain to which the service belongs.
  • the method for establishing a user data transmission bearer between the UGW and the MGW and the target gateway in the external network is as follows:
  • the control plane management server in the domain After receiving the information about the successful configuration of the user data transmission bearer of the access network, the control plane management server in the domain allocates the core network resources, sends configuration information to the UGW or the MGW, and establishes a relationship between the UGW or the MGW and the target gateway in the external network. User data transfer bearer.
  • control plane management server of the circuit domain is a mobile switching center server MSC-Server; and the control plane management server of the data domain is a serving general packet radio service support node server SGSN-Server.
  • a method for implementing data transmission by using a third wireless network architecture includes the following steps: a. After receiving an access request from a user terminal, the radio access network server RAN-Server establishes an access wireless link, and establishes and establishes a wireless control resource RC connection between user terminals; After receiving the service request from the user terminal, the RAN-Server establishes a wireless link for transmitting data, and establishes a user data transmission bearer of the access network; and sends information about successful configuration of the user data transmission bearer of the access network to The control plane management server in the domain to which the request service belongs is established by the control plane management server in the circuit domain to establish a user data transmission bearer between the UGW and the target gateway in the external network, and the control plane management server in the packet domain establishes a packet domain media gateway. User data transmission bearer between the P-MGW and the target gateway in the external network;
  • the UGW After receiving the service data from the user terminal forwarded by the RTS, the UGW determines whether the service data of the circuit domain or the service data of the packet domain, and if it is the service data of the circuit domain, directly sends the service data to the external network.
  • the target gateway implements service data transmission. If it is the service data of the packet domain, the service data is transmitted to the P-MGW, and the P-MGW directly transmits the service data to the target gateway in the external network.
  • the method for establishing a wireless link that enables the user terminal to access in step a is:
  • the RAN-Server After receiving the access request from the user terminal forwarded by the RTS and the UGW, the RAN-Server determines that the current resource of the access network is sufficient to allow the user to be received according to the RRC algorithm, and directly sends configuration information to the RTS to establish an access wireless chain. road.
  • the method for establishing an RRC connection with the user terminal in step a is:
  • the RAN-Server sends configuration information to the RTS through the RTS and the UGW, configures the radio layer 2 protocol stack in the RTS, establishes an RRC connection between the RAN-Server and the user terminal, and after the RRC connection is established, the RAN-Server passes the UGW. And the RTS sends the information that the RC connection is successfully established to the user terminal.
  • the method for establishing an RRC connection with the user terminal in step a is:
  • the RAN-Server sends configuration information to the UGW, and configures the wireless layer 2 protocol in the UGW.
  • the stack establishes an RRC connection between the RAN-Server and the user terminal. After the RRC connection is established, the RAN-Server sends the RRC connection establishment success information to the user terminal through the UGW and the RTS.
  • the step of establishing a wireless link for transmitting data includes the following steps: bl.
  • the RAN-Server receives the service request from the user terminal forwarded by the RTS and the UGW, encapsulates the service request, and then encapsulates the data through the UGW.
  • the request is sent to a control plane management server in the domain to which the service belongs;
  • the control plane management server determines that the user terminal is legal, and the core network is currently able to provide the user terminal with the required service, and then sends a radio access bearer establishment request to the RAN-Server via the UGW;
  • the RAN-Server After receiving the request in step b2, the RAN-Server directly sends configuration information to the RTS to establish a wireless link for transmitting data.
  • the user of the access network is established in step b: according to the method for transmitting the bearer: the RAN-Server sends configuration information to the RTS through the UGW, and configures the wireless in the RTS.
  • the layer 2 protocol stack establishes a user data transmission bearer of the access network.
  • the method for establishing the user data transmission bearer of the access network is as follows:
  • the RAN-Server sends configuration information to the UGW, and configures the wireless layer 2 protocol in the UGW.
  • Stack establishes the user data transmission bearer of the access network.
  • the RAN-Server sends the information that the user data transmission bearer of the access network is successfully established by the UGW to the control plane management server in the domain to which the service belongs.
  • the method for establishing a user data transmission bearer between the UGW or the P-MGW and the target gateway in the external network is as follows:
  • the control plane management server in the domain After receiving the information about the successful configuration of the user data transmission bearer of the access network, the control plane management server in the domain allocates core network resources, sends configuration information to the UGW or P-MGW, and establishes a target in the UGW or P-MGW and the external network. User data transfer bearer between gateways.
  • the control plane management server of the circuit domain is a mobile switching center server.
  • the control plane management server of the data domain is a serving general packet radio service support node server SGSN-Server.
  • the control plane function of the RC is implemented in a logical node, and the control plane function of the SGSN is implemented in one logical node; the user plane function in the RNC, the user plane function in the SGSN, and the CS domain
  • the MGW function is implemented in a logical node, or the user plane function in the RNC and the user plane function in the SGSN are implemented in a logical node, and the existing MGW is still maintained; or, in the RC
  • the user plane function is implemented in the same logical node as the existing MGW, and the user plane function in the SGSN is implemented in a separate logical node, which is similar to the MGW in the CS domain.
  • the logical node processing the user plane function After establishing the access network user data transmission bearer and the core network user data transmission bearer, the logical node processing the user plane function will receive the service data from the user terminal and directly send the target data to the external network.
  • the gateway does not need to transfer the service data to the logical node that processes the control plane function, thereby realizing the data transmission mode in which the user plane data and the control plane data are completely separated.
  • nodes that process control plane data and user plane data are logically completely separated, and the network is developed toward a distributed architecture, so that the network can use transmission resources more efficiently to adapt to future communications.
  • the development of business and communication technologies By applying the invention, the function is simplified for one node, the convenience of networking is increased, and the application of new technology and new service is more favorable.
  • this distributed architecture will make it easier to apply IP-related technologies in wireless network architectures.
  • FIG. 1 shows a network architecture of a prior art R5-based UMTS
  • 2 is a structural diagram of a prior art URTAN network
  • FIG. 3 is a schematic diagram of a wireless network architecture to which the present invention is applied;
  • FIG. 4 is a schematic diagram of another wireless network architecture to which the present invention is applied.
  • FIG. 5 is a schematic diagram of still another wireless network architecture to which the present invention is applied.
  • FIG. 6 is a schematic diagram of a Tt series interface protocol stack model to which the present invention is applied;
  • FIG. 7 is a schematic diagram of a U-series interface protocol stack model to which the present invention is applied;
  • FIG. 8 is a flow chart showing the process of implementing data transmission using the wireless network architecture shown in FIG. 3 of the present invention. Mode for carrying out the invention
  • the idea of the invention is: a new wireless network architecture is proposed based on the principle that the user plane and the control plane are completely separated, and the existing NodeB is called a radio transceiver (RTS, Radio Transceiver), and the control plane in the existing RNC is used.
  • the function is implemented in the radio access network server (RAN-Server), and the control plane function in the existing SGSN is implemented in the service general packet radio service support node server (SGSN-Server).
  • the user plane function in the RC, the user plane function in the SGSN, and the MGW in the CS domain are implemented in a logical node, and the node is referred to as a unified gateway (UGW, Unified Gateway), or, in the RNC.
  • UGW Unified Gateway
  • the user plane function and the user plane function in the SGSN are implemented in one logical node, and the existing MGW is still maintained; or the user plane function in the RNC and the existing MGW are implemented in the same logical node,
  • the user plane functionality in the SGSN is implemented in a separate logical node that is similar to the MGW in the CS domain. The above will be explained separately.
  • FIG. 3 is a schematic diagram of a wireless network architecture to which the present invention is applied.
  • the wireless network architecture includes: wireless for implementing user plane data and control plane data with the user terminal 300 RTS 301 for transmitting and receiving, RAN-Server 302 for implementing RNC control plane function, UGW for implementing RNC user plane function, SGSN user plane function and MGW function
  • SGSN-Servei' 305 for implementing the function of the SGSN control plane, and MSC-Server
  • the interface between the RTS 301 and the RAN-Server 302 is defined as Tt-c; the interface between the RTS 301 and the UGW 303 is Tt-u, the interface between the UGW 303 and the RAN-Server 302 is Uran; the UGW 303 and The interface between the MSC-Server 304 is Ucs; the interface between the UGW 303 and the SGSN-Server 305 is Ups.
  • the RTS 301 is configured to implement wireless transmission and reception of user plane data and control plane data with the user terminal 300 through an air interface.
  • the RAN-Server 302 is configured to receive control signaling from the user terminal 300 forwarded by the UGW 303.
  • the UGW 303 and the RTS 301 establish an RC transport bearer with the user terminal 300 and a user plane data bearer of the access network, and establish a wireless link with the user terminal 300 via the TTS-301 through the Tt-c interface to implement a wireless network.
  • the SGSN-Server 305 is configured to receive the control plane data of the PS domain, verify that the user terminal of the request service is legal, and the core network can provide the required service for the user terminal, and then configure the UGW 303 to establish the UGW via the Ups interface. 303 to the user plane data transmission bearer of the target gateway in the external network, to implement transmission network layer transmission; MSC-Server 304 is configured to receive control plane data of the CS domain, verify that the user terminal 300 of the request service is legal and the core network can currently be the After the user terminal provides the service, the UGW 303 is configured through the Ucs interface to establish the UGW 303 to the target gateway in the external network.
  • the host data transmission bearer implements the transmission network layer transmission; the UGW 303 is configured to forward the control plane data from the user terminal via the RTS 301 to the RAN-Server 302, the MSC-Server 304 or the SGSN-Server 305, or for forwarding from The user plane data of the user terminal 300 is to a target gateway in the external network.
  • FIG. 4 is a schematic diagram of another wireless network architecture to which the present invention is applied.
  • the difference from the wireless network architecture shown in FIG. 3 is as follows:
  • the wireless network architecture shown in FIG. 3 puts the user plane function of the RNC, the user plane function of the SGSN, and the functions of the MGW into the UGW, and thus the original MGW.
  • the network architecture shown in Figure 4 is to put the user plane function of the RC and the user plane function of the SGSN into the UGW, and keep the MGW in the existing wireless network architecture unchanged.
  • the wireless network architecture shown in FIG. 4 includes a CS domain, and the CS domain includes at least MSC-Server 304 and MGW 406.
  • RTS 301 further includes an RTS 301, a RAN-Server 302 for implementing an RC control plane function, A unified gateway UGW 303 for implementing the RNC user plane function and the SGSN user plane function, and an SGSN-Server 305 for implementing the SGSN control plane function.
  • the interface between the RTS 301 and the RAN-Server 302 is defined as Tt-c; the interface between the RTS 301 and the UGW 303 303 is Tt-u, and the interface between the UGW 303 and the RAN-Server 302 is Uran; UGW 303 The interface between the UGW 303 and the SGSN-Server 305 is Ups, and the interface between the UGW 303 and the MGW 406 is a standard TCP/IP interface, and the MGW 406 and the MSC-Server 304 The interface between the two is the existing Mc interface.
  • the RTS 301 is configured to implement wireless transmission and reception of user plane data and control plane data with the user terminal 300.
  • the RAN-Server 302 is configured to receive control plane data from the user terminal 300 forwarded by the UGW 303, by UGW 303.
  • the RTS 301 establishes an RRC transmission bearer with the user terminal 300 and a user plane data bearer of the access network, establishes a wireless link with the user terminal via the RTS 301, and implements wireless network layer transmission;
  • the SGSN-Server 305 is used for After receiving the control plane data of the PS domain, the face card authenticates the user terminal that is dependent on the authentication and the core network is currently able to provide the user terminal with the required service, then configure the UGW 303 and establish the UGW 303 to the target gateway in the external network.
  • the user plane data transmission bearer implements the transmission network layer transmission; the UGW 303 is configured to forward the control plane data from the user terminal through the RTS 301 to the RAN-Server 302, the SGSN-Server 305, or the MSC-Server 304 in the CS domain, or The user plane data in the packet domain from the 'user terminal' is forwarded to the target gateway or MGW 406 in the CS domain in the external network.
  • the MSC-Server 304 is configured to receive control plane data of the CS domain, and verify the request for initiating the request. After the user terminal is legal and the core network is currently able to provide the user terminal with the required service, the establishment is established.
  • the user plane data transmission of the MGW 406 in the CS domain to the target gateway in the external network is carried out to implement transmission network layer transmission; after receiving the CS domain service data from the user terminal forwarded by the UGW 303, the MGW 406 directly directly transmits the service data to the service data. Send to the target gateway in the external network.
  • FIG. 5 is a schematic diagram of still another wireless network architecture to which the present invention is applied.
  • the network architecture shown in FIG. 5 is to put the user plane function of the RNC and the MGW in the existing wireless network architecture into the UGW, and set the user plane function of the SGSN separately.
  • a logical node is called a packet domain media gateway (P-MGW).
  • the wireless network architecture shown in FIG. 5 includes an MSC-Server 304, an RTS 301, and a RAN-Server 302 for implementing the RNC control plane function.
  • the interface between the RTS 301 and the RAN-Server 302 is defined as Tt-c; the interface between the RTS 301 and the UGW 303 is Tt-u, and the interface between the UGW 303 and the RAN-Server 302 is Uran; the UGW 303 and The interface between the MSC-Server 304 is Ucs; the interface between the UGW 303 and the SGSN-Server 305 is Ups, and the interface between the UGW 303 and the P-MGW 506 is a standard TCP/IP interface, P-MGW 506 and SGSN.
  • the interface between the -Server 305 is an existing Mc interface.
  • the RTS 301 is configured to implement wireless transmission and reception of user plane data and control plane data with the user terminal 300.
  • the RAN-Server 302 is configured to receive control plane data from the user terminal 300 forwarded by the UGW 303, by UGW 303.
  • the RTS 301 establishes an RRC transmission bearer with the user terminal 300 and a user plane data bearer of the access network, establishes a wireless link with the user terminal via the RTS 301, and implements wireless network layer transmission;
  • the MSC-Server 304 is used for After receiving the control plane data of the CS domain, verifying that the user terminal that initiated the request is legal and the core network is currently able to provide the user terminal with the required service, the UGW 303 is established to the outside.
  • the user plane data transmission bearer of the target gateway in the network implements the transmission network layer transmission; the UGW 303 is used to forward the control plane data from the user terminal via the RTS 301 to the RAN-Server 302, the MSC-Server 304 or the SGSN in the PS domain.
  • the server 305 or, is configured to forward the user plane data from the user terminal to the P-MGW 506 in the target gateway or the PS domain in the external network; the SGSN-Server 305 is configured to receive the control plane data of the packet PS domain, and verify the initiation request.
  • the P-MGW 506 in the PS domain is established to the user plane data transmission bearer of the target gateway in the external network to implement transmission network layer transmission;
  • the MGW 506 is configured to directly send the service data to the target gateway in the external network after receiving the service data in the PS domain from the user terminal forwarded by the UGW 303.
  • each node such as RTS, RAN-Server, SGSN-Server, MSC-Server, and UGW, is a logically separated node, which may be in the same or different physical devices.
  • the Tt-c interface between the RTS and the RAN-Server uses the RTS Application Protocol Stack (RTSAP) as the transport layer of the wireless network layer, and the RTSAP protocol is similar to the RNC and the SGSN in the existing network.
  • RTSAP protocol uses the Stream Control Transmission Protocol (SCTP) and the International Interconnection (IP) protocol, or uses the Asynchronous Transfer Mode (ATM) as the transport network layer bearer.
  • the Tt-u interface between the RTS and the UGW uses the Tt User Part (TtUP) protocol stack as the transport layer of the wireless network layer, uses the User Data Protocol (UDP) and the IP protocol, or uses ATM as the transport network layer bearer.
  • Tt series protocol interface protocol stack model is shown in Figure 6.
  • the Uran interface between the UGW and the RAN-Server, the Ucs interface between the UGW and the MSC-Server, and the Ups interface between the UGW and the SGSN-Server use the ITU-T H.248.
  • the protocol stack or the IETF's Media Gateway Control Protocol (MEGACO, Media Gateway Control) protocol stack acts as a transport layer for the wireless network layer.
  • MGACO Media Gateway Control Protocol
  • the above U series protocol interface protocol stack model is shown in Figure 7.
  • the standard TCP/IP protocol stack is used as the transport layer of the wireless network layer, or ATM is used as the transport network layer bearer.
  • the UGW and P-MGW use the standard TCP/IP protocol stack as the transport layer of the wireless network layer, or use ATM as the transport network layer bearer.
  • the node RTS carries the air interface protocol stack (PHY), the control plane RTSAP protocol stack, the TtUP protocol stack, and the transport layer. Protocol stack; RRC and RRM (Radio Resource Management) protocol stack carrying the control plane, H.248 protocol stack, RSCAP (RSC Application Protocol) protocol stack of control plane and transport layer protocol stack
  • the wireless layer 2 protocol stack carrying the user plane in the node UGW is the Packet Data Convergence Protocol (PDCP), the Broadcast Group Control (BMC), the Radio Link Control (RLC), and the medium access.
  • PDCP Packet Data Convergence Protocol
  • BMC Broadcast Group Control
  • RLC Radio Link Control
  • MAC User Plane Control
  • H.248 and GTP GPRS Tunneling Protocol
  • Node SGSN-Server carries control plane SM (Session Management GMM (GPRS Mobility Management), RSCAP (RSC Application Protocol) ), H.248 protocol stack, transport layer protocol stack, and other nodes in the core network
  • SM Session Management GMM (GPRS Mobility Management), RSCAP (RSC Application Protocol)
  • H.248 protocol stack transport layer protocol stack
  • the protocol stack that the interface must contain; the CM, MM, and H.248 protocol stacks that carry the control planes in the MSC-Server, the transport layer protocol stack, and the protocol stack that must be included in the interface with other nodes in the core network.
  • NBAP NodeB Application Protocol
  • both the MGW and the P-MGW carry the TCP/IP interface protocol stack and the H.248 protocol stack.
  • the RTS can also carry the radio layer 2 protocol stack of the user plane, that is, the PDCP, the BMC, the RLC, and the MAC protocol stack.
  • the radio layer 2 protocol stack will no longer be carried in the UGW;
  • a part of the protocol stack in the radio layer 2 protocol of the user plane may be carried, and the rest of the protocol stacks in the radio layer 2 protocol are carried in the UG, for example, the RLC and the MAC protocol stack may be carried in the RTS.
  • the PDCP and BMC protocol stacks are carried in the UGW.
  • FIG. 8 is a flow chart showing the process of implementing data transmission using the wireless network architecture shown in FIG. 3 of the present invention.
  • the radio layer 2 protocol stack that is, the PDCP, BMC, RLC, and MAC protocol stacks are carried in the RTS, and the user terminal needs to use the data service in the PS domain.
  • Step 801 Before the user terminal initiates the service, the user terminal needs to establish a connection to the core network, so as to obtain a connection with the service server on the service platform. Before establishing the connection between the user terminal and the core network, the connection to the access network should be established first. The user terminal first initiates a connection request;
  • Link the configuration message format is specified by the RTSAP; at the same time, the RAN-Server sends the information of configuring the wireless layer 2 protocol stack. Since this embodiment carries the wireless layer 2 protocol stack in the RTS, the configuration of the wireless layer 2 protocol The information of the stack is forwarded to the UGW through the Uran interface, and then forwarded by the UGW to the RTS through the Tt-u interface.
  • the configuration of the radio layer 2 protocol stack in the RTS is configured to configure PDCP, BMC, RLC, and MAC, and establish a relationship between the RAN-Server and the user terminal.
  • RRC connection
  • the RAN-Server After the RRC connection is established, the RAN-Server sends the RRC connection establishment information to the user terminal through the UGW and the RTS, and the RRC connection has been successfully established. Steps 806 to 809, the user terminal receives the RRC connection establishment success information.
  • the non-access stratum protocol stack of the user terminal initiates a real service request, and the service request arrives at the UGW through the Tt-u interface of the RTS, and then passes through the Uran interface to the RAN-Server, and the RAN-Server encapsulates the received service request and then passes the The Uran interface is forwarded to the UGW.
  • the UGW forwards the encapsulated message to the SGSN-Server through the Ups interface. Steps 810 to 811.
  • the SGSN-Server After receiving the service request, the SGSN-Server contacts the HSS to determine the After the user terminal is legal, and it is determined that the core network can provide the required service for the user terminal, the RAN-Server sends a radio access bearer setup request, and the request reaches the UGW through the Ups interface, and then the UGW interface is used. Forward to RAN-Server;
  • Step 812 to step 813 after receiving the radio access bearer setup request, the RAN-Server sends configuration information to the RTS through the Tt-c interface, and establishes a radio link for transmitting data between the RAN-Server and the RTS, and the configuration message format At the same time, the RAN-Server sends the configuration information to the RTS through the UGW through the URAN interface, configures the wireless layer 2 protocol stack in the RTS, and establishes the user data transmission bearer of the access network;
  • the user data transmission bearer of the access network between the UGW and the user terminal is established, that is, the RAB transmission bearer
  • Step 814 to step 815 after the user data transmission bearer of the access network is established, the RAN-Server sends the information of the user data transmission bearer of the access network to the SGSN-Server through the UGW; the SGSN-Server receives the access network.
  • the core network resource is allocated, and the configuration information is sent to the UGW through the Ups interface, and the user data transmission bearer between the UGW and the target gateway in the external network is established;
  • Step 816 to step 818 the user terminal sends the service data to the RTS, and the RTS forwards the data to the UGW through the Tt-u interface.
  • the UGW does not need to go through the SGSN-Server to directly transfer the data.
  • the target gateway is sent to the external network, and the target gateway transmits the user data to the service server of the service platform.
  • the radio layer 2 protocol stack that is, the PDCP, the BMC, the LC, and the MAC protocol stack are carried in the RTS. If the radio layer 2 protocol stack, that is, the PDCP, the BMC, the RLC, and the MAC protocol stack, is carried in the UGW, In step 804 to step 805, after establishing a radio link that enables the user terminal to access, the RAN-Server sends configuration information to the UGW through the Umn interface, configures the radio layer 2 protocol stack in the UGW, and establishes the RAN-Server and the user terminal.
  • the RRC connection is established; and after the RC connection is established, the RAN-Server sends the RRC connection establishment success information to the user terminal through the UGW and the RTS.
  • the RAN-Server sends configuration information to the UGW via the Uran interface, and configures the radio layer 2 protocol stack in the UGW to establish a user data transmission bearer of the access network.
  • a part of the wireless layer 2 protocol stack is carried in the RTS, a part of the wireless layer 2 protocol stack is carried in the UGW.
  • the RTS carries the RLC and the MAC protocol stack
  • the UGW carries the PDCP and the BMC protocol stack.
  • the RAN-Server needs to send configuration information to the RTS through the UGW, configure the radio layer 2 protocol stack in the RTS, and send the configuration to the UGW.
  • Information configure the wireless layer 2 protocol stack in the UGW to establish an RRC connection between the RAN-Server and the user terminal.
  • the RAN-Server needs to send configuration information to the RTS through the UGW, configure the radio layer 2 protocol stack in the RTS, and send configuration information to the UGW, and configure the radio layer 2 protocol in the UGW.
  • the stack is used to establish a user data transmission bearer of the access network.
  • the user terminal uses the data service in the PS domain. If the user terminal needs to use the voice service in the CS domain, the SGSN-Server in the above process may be replaced by the MSC-Server. Here, we may wish to refer to SGSN-Server and MSC-Server collectively. Manage the server for the control plane.
  • the process for implementing the data transmission in the wireless network architecture shown in FIG. 4 is basically the same as the process shown in FIG. 8, and the difference is that the user data transmission bearer between the MGW and the target gateway in the external network is established by the MSC-Server;
  • the SGSN-Server establishes the user data transmission bearer between the UGW and the target gateway in the external network.
  • the UGW receives the service data from the user terminal forwarded by the RTS, the UGW determines whether it is the service data of the CS domain or the service data of the PS domain. If it is the service data of the PS domain, the service data is directly sent to the target gateway in the external network to implement the service data transmission. If it is the service data of the CS domain, the service data is transmitted to the MGW, and the MGW directly The service data is sent to a target gateway in the external network to implement service data transmission. The rest of the same parts are not repeated here.
  • the process for implementing data transmission by applying the wireless network architecture shown in FIG. 5 of the present invention is basically the same as the process shown in FIG. S, and the difference is that the user data between the P-MGW and the target gateway in the external network is established by the SGSN-Server.
  • the transmission bearer, the MSC-Server establishes the user data transmission bearer between the UGW and the target gateway in the external network; when the UGW receives the service data from the user terminal forwarded by the RTS, it determines whether the service data of the CS domain or the PS domain
  • the service data if it is the service data of the CS domain, directly sends the service data to the target gateway in the external network to implement the service data transmission. If it is the service data of the PS domain, the service data is transmitted to the P-MGW.
  • the P-MGW directly sends the service data to the target gateway in the external network to implement service data transmission. The rest of the same parts will not be repeated here.

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Abstract

L'invention concerne une structure de réseau sans fil et un procédé de mise en oeuvre de transmission de données par application de la structure de réseau sans fil. Après la configuration des éléments de prise en charge de la transmission de données utilisateurs du réseau d'accès et du réseau d'infrastructure au niveau d'une logique de la fonction de contrôle de traitement, le noeud logique de la fonction des utilisateurs reçoit les données relatives au service en provenance du terminal utilisateur et les envoie directement au réseau externe, sans qu'il soit nécessaire de transmettre les données de service au noeud logique de la fonction de contrôle. Ainsi, on obtient une transmission de données qui distingue clairement les données utilisateurs des données de traitement. Selon le système et le procédé de l'invention, les noeuds de contrôle du traitement et l'utilisateur sont séparés de façon logique et complète, de sorte que le réseau tende à devenir une structure répartie, et que les ressources de transmission soient utilisées de façon plus efficace par le réseau, afin d'adapter le développement de technologie et de service de communication future, d'augmenter le matériel d'organisation du réseau, et les nouvelles technologies et les nouveaux services sont mis en oeuvre de façon plus aisée.
PCT/CN2005/001547 2004-09-23 2005-09-23 Structure de reseau sans fil et procede de mise en oeuvre de transmission de donnees par application de la structure de reseau sans fil Ceased WO2006032213A1 (fr)

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GB2471861B (en) * 2009-07-14 2013-04-17 Fujitsu Ltd Data and control information routing in wireless communication systems
CN111567015A (zh) * 2018-01-12 2020-08-21 Oppo广东移动通信有限公司 一种数据传输方法及装置、计算机存储介质

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