WO2006136103A1 - Reseau de communication mobile et procede de communication associe - Google Patents

Reseau de communication mobile et procede de communication associe Download PDF

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Publication number
WO2006136103A1
WO2006136103A1 PCT/CN2006/001412 CN2006001412W WO2006136103A1 WO 2006136103 A1 WO2006136103 A1 WO 2006136103A1 CN 2006001412 W CN2006001412 W CN 2006001412W WO 2006136103 A1 WO2006136103 A1 WO 2006136103A1
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WIPO (PCT)
Prior art keywords
access
user
network
user plane
mobile communication
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PCT/CN2006/001412
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English (en)
Chinese (zh)
Inventor
Xin'gang Liang
Jie Wang
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Huawei Technologies Co., Ltd.
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Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2006136103A1 publication Critical patent/WO2006136103A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • H04W36/00224—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB]
    • H04W36/00226—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB] wherein the core network technologies comprise IP multimedia system [IMS], e.g. single radio voice call continuity [SRVCC]

Definitions

  • the present invention relates to the field of mobile communication technologies, and in particular, to a framework and a communication method of a mobile communication network. Background technique
  • the Universal Mobile Telecommunications System (UMTS) is proposed by the European Telecommunications Standards Institute (ETSI) to smoothly transition to the third network based on the Global System for Mobile Communication (GSM) system. Generation of mobile communication solutions.
  • Wideband Code Division Multiple Access (WCDMA) is one of the international standards for third-generation mobile communications accepted by the International Telecommunications Union (ITU). It can also be said that it is the world's first commercial third-generation mobile communication system, and is the standard for the frequency division duplex (FDD) band of the third generation mobile communication system in Europe. Since UMTS uses Wideband Code Division Multiple Access (WCDMA) air interface technology, the UMTS system is also commonly referred to as a WCDMA communication system.
  • WCDMA Wideband Code Division Multiple Access
  • UMTS Third Generation mobile communication system
  • FIG. 1 is a schematic structural diagram of a prior art UMTS system.
  • the UMTS system adopts a structure similar to that of the second generation mobile communication system, and is composed of user equipment such as a mobile phone, a portable computer, and a vehicle-mounted telephone.
  • UE User Equipment
  • UTRAN Universal Mobile communication system UTRAN Terrestrial Radio Access Network
  • CN Core Net
  • CN is logically divided into a circuit switched from (CS, Circuit Switching) domain and a packet switched (PS, Packet Switching) 0
  • the UTRAN contains one or several Radio Network Subsystems (R S). 2 is a schematic structural diagram of a UTRAN network in the prior art. As shown in FIG. 2, each RNS is composed of a radio network controller (RNC) and one or more base station nodes (Node B, Node Base Station). .
  • RNC radio network controller
  • Node B Node Base Station
  • the RNC and the CN are connected through the Iu interface; the NodeB and the RNC are connected through the Iub interface; the RNCs are connected through the Iur interface, and the Iur interface can be implemented through a direct physical connection between the RNCs or through a transmission network connection.
  • the RNC is responsible for allocating and controlling the radio resources of the Node B connected or related thereto, in other words, responsible for controlling the radio resources of the UTRAN, mainly completing connection establishment and disconnection, handover, macro diversity, and radio resources. Management control and other functions.
  • Node B is responsible for the conversion of the data stream between the Iub interface and the Uu interface, and also participates in some radio resource management. Specifically, it includes a wireless transceiver and a baseband processing component. As described above, the physical interface protocol of the Uu interface is mainly processed through a standard Iub interface and an R C interconnection. Its main functions are spread spectrum, modulation, channel coding and despreading, demodulation, channel decoding, and also the conversion of baseband signals and RF signals.
  • 3GPP is an organization established by telecommunications organizations such as Europe, Japan, South Korea and the United States, which was established at the end of 1998.
  • the organization's mission is to research, develop and promote standards for the development of third-generation mobile communication networks based on the GSM mobile communication network.
  • WCDMA Third-generation mobile communication networks
  • the following versions of the standard have been released before S: R99, R4, R5 and R6.
  • Figure 3 shows the system architecture of the mobile communication system under the 3GPP ⁇ R99 standard.
  • the specific structure and principle can be found in the related literature of 3GPP. In general, it has the following characteristics: First, the core network is logically divided into circuit domain CS and packet domain PS.
  • the Iu interface between the core network and the access network is based on Asynchronous Transfer Mode (ATM), that is, the digitized information (including voice, digital, Various information such as images are divided into a number of fixed-length packets at the time of transmission. Each packet has a fixed length of 53 bytes and is divided into a header (5 bytes) and an information field (48 bytes). . The content of the header portion is the control information such as the destination address, and the content of the information domain portion is the information sent by the user. This fixed length packet is called a "cell" and is the basic unit of ATM transmission.
  • ATM Asynchronous Transfer Mode
  • This transmission method has the flexibility of packet switching, is suitable for non-real-time various data transmission services, and has the convenience of circuit switching, and is suitable for real-time transmission services such as telephones. Therefore, the application of this transmission mode can integrate various services such as voice, digital and image to realize a broadband integrated service digital network (B-ISDN).
  • voice transmission can use ATM Adaptation Layer 2 (AAL2, ATM Adaptation Layer); data transmission can use AAL5/General Wireless Packet Service Protocol (GTP, GPRS Tunneling Protocal) 0
  • the core network circuit domain is based on Time Division Multiplexing (TDM) bearer technology.
  • TDM Time Division Multiplexing
  • the core network packet domain is based on the above GPRS technology, and is served by a Serving GPRS Support Node (SGSN), a Gateway General Packet Radio Service Node (GGSN), and a Charging Gateway (CG, Charging Gateway) and other functional entities.
  • SGSN Serving GPRS Support Node
  • GGSN Gateway General Packet Radio Service Node
  • CG Charging Gateway
  • FIG 4 shows the mobile communication system architecture under the 3GPP ⁇ R4 standard, where the PS domain is the same as R99, not shown.
  • the 3GPP.R4 architecture differs from the 3GPP.R99 architecture mainly in the CS domain.
  • control is separated from bearers.
  • the functions of the Mobile Switching Center (MSC) are divided into MSC Server and Media Gateway (MGW). The specific structure and principle can be found in the related literature.
  • 3GPP ⁇ R4 Compared with the 3GPP ⁇ 99 architecture, 3GPP ⁇ R4 has the following characteristics:
  • TDM Time Division Multiplexing
  • IP Internet Protocol
  • the TDM/ATM/IP networking circuit domain and the packet domain use the same packet transmission network, which can be integrated with the metropolitan area network;
  • Scalability The control plane MSC Server, the bearer plane CS-MGW can be expanded separately; 4. Manageability: The control plane MSC Server is centrally set in the central city, and the CS-MGW is distributed in the edge city, which is more conducive to new Business is rapidly spreading; Fifth, to the next generation network Evolution of (NGN, Next Generation Network): The R4 control is separated from the bearer and has the basic form of the NGN network.
  • NGN Next Generation Network
  • the mobile communication system architecture under the 3GPP.R4 standard can adopt IP bearer, thereby obtaining the following advantages: advantages of IP packet statistical multiplexing; packet bearer network, reducing the number of voice codecs, and improving voice service quality It saves the cost of network construction; efficient use of network bandwidth; simple network configuration, capacity expansion and maintenance, can significantly reduce operating costs; backbone network and data network can be shared, reduce construction investment; achieve multi-network convergence, provide integrated services.
  • UTRAN is one of the access systems, and other 3GPP systems such as GSM, and such as a wireless local area network (WLAN)
  • WLAN wireless local area network
  • a non-3GPP system such as a parallel access system can be connected to the core network in parallel.
  • IPPN All IP Network
  • IPPN All IP Network
  • the CS domain will be gradually replaced by PS voice over IP (VoIP over IP).
  • the already-published network architecture including 3GPP ⁇ R6 basically follows the design concept of CS domain circuit switching, resulting in complex network design, many nodes, each node must be processed and forwarded, call setup delay Both the user and the data transmission delay are relatively large. Therefore, these versions cannot access the non-3GPP access system, which is bound to cause resistance to the flexible expansion of the future network. Therefore, it is also necessary to consider designing a new access network and a core network structure.
  • a mobile communication network includes at least two communication systems having access functions, wherein at least one communication system is a mobile communication system, and an access system connection network is provided for centralized control.
  • the user switches between the communication systems; the connection system between the access systems further includes:
  • the inter-system user plane is configured to establish and manage a user plane tunnel and a communication between the communication systems under the control plane control connection between the access systems.
  • the mobile communication system may include an evolved access network and a core network, where
  • the access network includes at least one base station, configured to access a user to the core network, implement physical layer functions, link layer functions, cell load control, security mode control, system information broadcast, and radio resource management;
  • the core network includes at least one enhanced access system controller for processing mobility management, session management, encryption authentication, multi-cell radio resource management, and small-area handover management in the access network;
  • the base station directly establishes a user plane tunnel and a bearer with the user plane between the access systems, and the base station exchanges user plane data with other base stations or other communication systems through the user plane tunnel and the bearer.
  • the enhanced access system controller and the base station may be in a one-to-many or many-to-many relationship.
  • Each of the communication systems within the network accesses the Internet Protocol Multimedia Subsystem and the Internet through the inter-access network; or
  • the user plane of the access system implements a user plane entity function, and terminates downlink data of the user equipment UE in the idle mode.
  • the paging UE is triggered to manage the UE context; and/or the anchor entity function is implemented, including User plane anchor function between 3GPP and non-3GPP or between 2G/3G and evolved access networks.
  • the network also includes any one or any combination of the following modules that are shared by the inter-access network and each of the communication systems:
  • Policy charging principle function module for processing policies and charging
  • the home subscriber network is used to store subscriber subscription information and location information.
  • the access modes adopted by the communication system include:
  • Wireless LAN microwave access global intercommunication system, digital subscriber line access, and Bluetooth access.
  • a communication method in a mobile communication network which uses the foregoing mobile communication network, includes:
  • the base station After the user terminal accesses the base station, the base station initiates a user access request to the enhanced access system controller;
  • the enhanced access system controller performs user authentication in response to the access request, and performs admission control if the user is legal, and requests access to the inter-system control plane to establish a user plane to access the inter-system user plane to the base station.
  • Tunnel and bearer
  • the access control system controls the user plane between the access systems to establish the user plane tunnel and the load;
  • the base station uses the user plane tunnel and the bearer to transmit the service data of the user.
  • the network includes a policy charging function module for processing policies and charging.
  • the policy charging function module collects traffic through an interface with a user plane function between the access systems. The user service is charged according to the traffic.
  • the network further includes a home subscription subscriber server for storing user subscription information and location information;
  • the enhanced access system controller performs user authentication based on user subscription information obtained from the home subscription user server.
  • the inter-system access control plane sends a service quality requirement of the user service to the user plane of the access system;
  • the user plane between the access systems establishes the user plane tunnel and bearer according to the received service volume requirement.
  • a communication method in another mobile communication network which is applied to the aforementioned mobile communication network, wherein the communication system accesses the user terminal through a universal mobile communication system terrestrial radio access network, characterized in that The methods include:
  • the radio network controller After the user terminal accesses the Node B and the radio network controller, the radio network controller initiates a user access request to the serving general packet radio service support node SGSN;
  • the SGSN Responding to the access request, the SGSN performs user authentication, and if the user is legal, performs admission control, and requests the access control system to establish an inter-system user plane to the user plane tunnel of the radio network controller.
  • the inter-access system connection control plane controls the user plane between the access systems to establish the user plane tunnel and bearer;
  • the radio network controller accesses the Internet Protocol Multimedia Subsystem and the Internet through the user plane tunnel and bearer.
  • the gateway general packet radio service support node GGSN When the SGSN determines that the user is prohibited from accessing the inter-access network by performing user authentication, requesting the gateway general packet radio service support node GGSN to establish a user plane tunnel and bearer for the user, and passing the GGSN Access to the Internet Protocol Multimedia Subsystem and the Internet.
  • a method for a user terminal to switch between different systems in a mobile communication network is applied to the foregoing network, and the method includes:
  • the first device for handover management in the current communication system where the user terminal is located sends a different system handover request to the connection control plane between the access systems;
  • inter-system control plane sends an access request to the second device in the target communication system for handover management according to the handover request;
  • the second device determines whether the user terminal has the right to access the target communication system, and if so, And allocating access resources to the user equipment, and notifying the first device to perform handover by using the connection control plane between the access systems.
  • the first device determines, according to the measurement result reported by the user terminal, that the service capability of the target communication system is stronger than that of the current communication system, the first device initiates a different system handover request.
  • the device for handover management includes an SGSN device, an enhanced access system controller, or a wireless local area network access gateway.
  • the present invention adopts an inter-system connection network IAN that centrally controls switching between multiple communication systems, and the IAN is connected to the inter-system user by the user plane.
  • the plane IAU and the control plane are connected to each other by a control plane IAC.
  • the IAU is used to establish a user plane tunnel and bearer with each communication system.
  • the IAC is used for mobility management, user information authentication and admission control between communication systems.
  • the devices used for handover management in each communication system implement inter-system handover by interacting with IAC, and access Internet Multimedia Subnet (IMS, Internet Multiedia Subsystem) and Internet through IAU.
  • IMS Internet Multimedia Subnet
  • the present invention also provides an evolved system, including an evolved access network E-AN, an evolved core network E-CN, and cooperates with IAN to provide wireless services to users.
  • the E-AN includes at least one BS for implementing functions such as physical layer function, cell load control, security mode control, system information broadcast, and radio resource management
  • the E-CN includes at least one enhanced access system controller (EAC)
  • EAC enhanced access system controller
  • the Enhanced Access-system Controller is used to implement functions such as mobility management, session management, encryption authentication, multi-cell radio resource management, and inter-cell handover management in the E-AN.
  • the user plane tunnel data is directly established between the BS and the IAU.
  • each communication system can operate independently and independently access the IMS and the Internet.
  • connection system IAN between the access systems, realizes the mobility management between the systems and the unified data routing and forwarding functions, so that the IMS does not require the intrusion network and the interface to be unified, and can maintain the independence of each communication system.
  • the user terminal is free to roam between various communication systems.
  • FIG. 1 is a schematic structural diagram of a UMTS system in the prior art
  • FIG. 2 is a schematic structural diagram of a UTRAN network in the prior art
  • 3 is a schematic diagram of a mobile communication system architecture under the 3GPP ⁇ R99 standard
  • FIG. 4 is a schematic diagram of a mobile communication system architecture networking under the 3GPP R4 standard
  • FIG. 5 is a schematic diagram of a mobile communication system architecture under the 3GPP. R6 standard
  • FIG. 6 is a schematic structural diagram of a mobile communication network according to a first embodiment of the present invention
  • FIG. 7 is a flow chart showing a communication method of a user terminal in a mobile communication network evolution system according to a second embodiment of the present invention
  • FIG. 8 is a flow chart showing a communication method of a user terminal in an existing mobile communication network UTRAN according to a third embodiment of the present invention.
  • Figure 9 is a flow chart showing the handover of user terminals between different access systems in a mobile communication network according to a fourth embodiment of the present invention. detailed description
  • a mobile communication network should include at least two communication systems having access capabilities.
  • the mobile communication network includes an (E-AN) + (E-CN) system, a UTRAN + PS system, and a WLAN system.
  • the mobile communication network proposed by the present invention further includes an Inter-Access Network (IAN), a Home Subscriber Server (HSS), and a Service Control Point (SCP). , PCRP (Policy Billing Principle Function) and Internet Protocol Multimedia Subsystem (IMS, IP Multimedia Subsystem).
  • Fig. 6 shows the architecture of the mobile communication network according to the present embodiment, in which the same interface as in the prior art is omitted for the sake of clarity.
  • IAN is used to centrally control each access network, making each access network transparent to IMS.
  • IEEE Institute of Electrical and Electronics Engineers 802.21.
  • IAN is used to centrally control the switching between communication systems.
  • IAN can further be used to connect each of the communication systems in the network to the IMS and the Internet.
  • the inter-access network IAN includes an Inter-Access User System (IAU) and an Inter-Access Control System (IAC).
  • IAU Inter-Access User System
  • IAC Inter-Access Control System
  • the IAU is equivalent to the enhancement of the GGSN user plane function to establish and manage user plane tunnels and bearers under the control of the IAC.
  • the IAU functions as a user plane entity (UPE), that is, downlink data of a UE that terminates idle mode, when data arrives, triggers paging of the UE, manages UE context (such as default IP bearer information); and/or anchor point Entity function, that is, the user plane anchor function between 3GPP and non-3GPP or between 2G/3G and evolved access networks.
  • UPE user plane entity
  • anchor point Entity function that is, the user plane anchor function between 3GPP and non-3GPP or between 2G/3G and evolved access networks.
  • the IAC has the GGSN control plane function, and handles mobility management between access systems, user information authentication across system switching, and admission control functions.
  • IAU and IAC can be implemented in one functional entity or multiple functional entities.
  • the IAN since the IAN includes an IAU representing a user plane and an IAC representing a control plane, it facilitates flexible access to multiple wireless access systems and enables inter-access network access. Switching is easier, and multiple access systems can operate independently and roam each other.
  • the existing network architecture for WLAN and UTRAN+PS can be operated independently without any changes. That is to say, they can directly access the IMS or the Internet without going through IAN.
  • the communication from the UE to the Internet can be similar to the existing network, and the GGSN directly accesses the Internet.
  • the PCRF (will be The following describes the interface with the GGSN to perform functions such as billing.
  • the WLAN can access the Internet through a Packet Data Gateway (PDG).
  • PGW Packet Data Gateway
  • the user plane data of the UTRAN+PS system can also be directly connected to IAN to Reduce user face delay.
  • the user service request is authenticated by the serving general packet radio service support node SGSN.
  • the user plane bearer is directly established between the IAU and the UTRAN, and the UTRAN data is directly connected to the IAU from the radio network controller RNC, and connected.
  • the existing UTRAN+PS system only needs to directly connect the Iu interface user plane control plane to the two interfaces, so that the UTRAN can directly access the IAN.
  • the mobile communication network of the present embodiment further includes a mobile communication system evolved on the 3GPP system, the communication system including an evolved access network (E-AN) and a core network (E-CN).
  • E-AN evolved access network
  • E-CN core network
  • the E-AN is used to connect the user to the E-CN.
  • the E-AN includes at least one base station (BS, Base Station).
  • the 0 BS has a Node B function of the original system, and also has a control wireless network.
  • the BS implements functions such as physical layer function, cell load control, security mode control, system information broadcast, and radio resource management.
  • the E-CN includes at least one enhanced Access System Controller (EAC) for implementing mobility management within E-AN, session management, encryption authentication, multi-cell radio resource management, and inter-cell communication. Switch management and other functions.
  • EAC enhanced Access System Controller
  • the relationship between the EAC and the BS may be a one-to-many or many-to-many relationship, and the distance between them is usually close.
  • the BS directly establishes a user plane tunnel and a bearer with the IAU, and the BS exchanges user plane data with other BSs or other communication systems through the user plane tunnel and the bearer, because the user plane data passes through fewer intermediate nodes. Therefore, the time delay is reduced.
  • the BS can access both the IMS and the Internet, as well as interact with other BSs.
  • control plane of the existing RNC can access the EAC, and the EAC performs mobility management, session management, and authentication.
  • the user plane directly accesses the IAU, and at the same time,
  • the BS control plane information accesses the EAC, and since there are few intermediate nodes, the transmission delay of the control plane data can be reduced.
  • the mobile communication network of this embodiment further includes HSS and PCRF which are shared by IAN and each of the communication systems.
  • the HSS is used to store the subscription information, location information, and the like of the user.
  • each access system and the IAN share the HSS module.
  • the PCRF is used to process functions such as policy and accounting.
  • each access system and IAN share a common PCRF module.
  • the PCRF has interfaces with each IAU and IAC, respectively, to complete the flow rate and control interaction.
  • the UTRAN system interfaces through the GGSN and the PCRP, and the LAN system passes through a Packet Data Gateway (PDG) and a PCFE interface.
  • PDG Packet Data Gateway
  • the mobile communication network according to this embodiment further includes an SCP used by the IAN, which is used to complete the intelligent network service.
  • each new functional module in the present invention is a logical functional entity.
  • different logical entities may be implemented in one physical entity, or one logical entity may be divided into multiple physical entities.
  • Implemented in entities such as distributed systems, that is, they can be combined at will in physical implementation.
  • the communication system in the present invention can adopt both wireless access technology and wired access technology, including but not limited to 3GPP versions of communication systems, WLAN, microwave storage and global interoperability (WiMAX, Worldwide Interoperability).
  • WiMAX Global Interoperability
  • WiMAX Worldwide Interoperability
  • Microwave Access communication system using various digital subscriber line (DSL, Digital Subscriber Line) access, communication system using Bluetooth access, and the like.
  • the network can be similar to the existing network to access the IMS or the Internet, and the mobility management and unified between the access networks can be performed through the access network.
  • the functions of data routing and forwarding enable IMS to distinguish between access networks and interfaces.
  • the handover between different access networks is made easier.
  • Fig. 7 the communication flow of the user terminal in the mobile communication network evolution system according to the second embodiment of the present invention will be described.
  • step 710 after the user terminal accesses the base station, the base station initiates a user access request to the EAC, and the EAC responds to the access request to perform user authentication. That is, the user terminal accesses the network through the BS, and the BS requests the EAC to authenticate the user, performs admission control, and establishes a user plane bearer for the user;
  • Step 720 The EAC communicates with the HSS, obtains the user subscription information from the HSS, and determines whether the service requested by the user is legal, whether the user is allowed to access, and if yes, proceeds to step 730; otherwise, proceeds to step 770.
  • Step 730 Perform admission control, and request the IAC to establish a user plane tunnel and bearer between the user plane to the base station, that is, to communicate with the IAC to establish a user plane for the user service;
  • Step 740 The IAC sends a QoS (Quality of Service) request to the IAU, and the IAU establishes a user plane tunnel to the BS according to the QoS requirement of the user service.
  • QoS Quality of Service
  • Step 750 The user service data directly reaches the IAU through the BS, and accesses the Internet or the IMS through the IAU.
  • the PCRF and the IAU have an interface, which is responsible for collecting traffic, and charging the user service according to the traffic, and ending the process.
  • Step 770 rejecting the user access, and ending the process.
  • step 810 after the user terminal accesses the Node B and the RC, the radio network controller initiates a user access request to the SGSN; that is, the user terminal accesses the network through the NodeB/RNC, and the RNC requests the SGSN to authenticate the user. Do admission control, and create user planes for users.
  • the SGSN performs user authentication in response to the access request, and if the user is legal, performs admission control, and requests the IAC to establish an IAU-to-RNC user plane tunnel and bearer; thereafter, the IAC controls the IAU to establish a user plane tunnel and bearer; Then, the RNC accesses the IMS and the Internet through the user plane tunnel and bearer.
  • Step 820 The SGSN communicates with the HSS, determines whether the service requested by the user is legal, whether the user is allowed to access the IAN, if yes, proceeds to step 830, otherwise, proceeds to step 870; Step 830: Since it is determined in step 820 that the SGSN allows the user to access, in this step, the communication with the IAC is prepared to establish a user plane bearer for the user service;
  • Step 840 The IAC sends the user service QoS request to the IAU, and the IAU establishes a user plane tunnel to the RNC according to the user service QoS requirement.
  • Step 850 The user service data directly arrives at the IAU through the NodeB/RNC, and accesses the Internet or the IMS through the IAU.
  • Step 860 During the communication process, the PCRF has an interface with the IAU, and is responsible for collecting traffic, and charging the user service according to the traffic;
  • Step 870 Since it is determined in step 820 that the SGSN does not allow the user to access the IAN, in this step, communication with the GGSN is prepared to establish a user plane bearer for the user service. That is, if the SGSN determines that the user is forbidden to access the IAN when performing user authentication, the GGSN is requested to establish a user plane tunnel and bearer for the user, and access the IMS and the Internet through the GGSN.
  • Step 880 GGSN according to user service QoS Request to establish a user plane tunnel to the SGSN/RNC;
  • Step 890 The user service data arrives at the GGSN through the NodeB/R C/SGSN, and finally accesses the Internet or the IMS.
  • Step 900 During the communication process, the PCRF has an interface with the GGSN, and is responsible for collecting traffic, and charging the user service according to the traffic;
  • a flow of handover between user terminals in different mobile systems in a mobile communication network will be described.
  • the evolution of the evolved system to the 3GPP system will be described.
  • a first device for handover management such as an EAC
  • a current communication system in which a user terminal is located
  • the IAC after transmitting a different system handover request to the IAC, the IAC sends a target system to the target communication system according to the handover request (3GPP system) a second device for handover management, such as an SGSN, to send an access request; thereafter, the second device determines whether the user terminal has access to the target communication system, and if so, allocates access resources for the user terminal, and The first device is notified by the IAC to switch.
  • step 910 the user terminal first accesses the IMS through the evolved access system architecture;
  • Step 920 When the user is in an area where both access systems have coverage, the measurement result reported by the user terminal indicates that the new access system service capability is stronger than the access system that is providing the service, and the network side EAC, That is, the first device mentioned above decides to send and switch, and it sends a request to the IAC, and informs the relevant access parameters of the target access system. Therefore, in this embodiment, the condition that the first device EAC initiates the inter-system handover request is that the service capability of the target communication system is found to be stronger than the current communication system according to the measurement result reported by the user terminal.
  • Step 930 The IAC contacts the SGSN/RNC in the target access system according to the received information, and requests the user to access the access system.
  • Step 940 The new access system SGSN, that is, the second device, contacts the HSS to determine whether the user has the right to access the access system, and if so, proceeds to step 950, otherwise, proceeds to step 980;
  • Step 950 In step 940, it is determined that the user has the right to access the access system. In this step, the user is allocated corresponding access resources, and the IAC is notified to allow access, and the corresponding access usage information is fed back. ;
  • Step 960 The IAC feeds back the information to the EAC, and the EAC feeds back to the BS, and the BS feeds back the access information to the user terminal, and notifies the user terminal to switch;
  • Step 970 The user accesses the new access system according to the received information of the new access system, and continues to use the service;
  • Step 980 Since it is determined in step 940 that the user does not have the right to access the access system, in this step, the SGSN rejects the IAC;
  • Step 990 The IAC feeds back the rejection message to the EAC.
  • the device for handover management may be a Wireless Local Area Network Access Gateway (WAG).
  • WAG Wireless Local Area Network Access Gateway
  • wireless and broadband cable systems can also switch between, for example, when the notebook computer used by the user originally used WCDMA to access IMS, when the notebook is plugged into the Internet, it can have 100M broadband access capability. It is also possible to seamlessly switch to accessing the IMS through wired broadband using a method similar to the fourth embodiment.
  • the EAC in the above embodiment is placed in the core network (the core network may include E-CN, IAN, IMS, etc.), but can also be placed on the access network side. EAC can be independent or merged with IAC, so E-CN and IAN are merged accordingly.
  • the present invention does not limit the access technology of the communication system, so various wireless or fixed broadband access technologies, including the UTRAN of the 3GPP standard, and various non-3GPP access technologies and future access technologies may be used. Adapt to the future development of mobile communication networks.

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

Abstract

La présente invention a trait à un réseau de communication mobile et à un procédé de communication. Un IAN permettant la commande centralisée du transfert entre de multiples systèmes de communication est composé d'un IAU destiné au plan utilisateur et d'un IAC destiné au plan de contrôle. Un appareil de gestion de transfert, contenu dans chaque système de communication, réalise un transfert intersystème en interagissant avec l'IAC, et accède à l'IMS et à l'Internet par l'intermédiaire de l'IAU. En outre l'invention concerne un système d'évolution contenant un E-AN et un E-CN, qui coopère avec l'IAN afin de fournir un service sans fil à des utilisateurs. L'E-AN comprend au moins une station de base, qui est destinée à exécuter les fonctions de couche physique, de contrôle des charges cellulaires et de gestion des ressources sans fil, etc. L'E-CN comprend au moins un EAC, qui est destiné à exécuter les fonctions de gestion de mobilité intra-E-AN et la gestion de transfert intercellulaire, etc. La station de base établit un tunnel de plan utilisateur directement avec l'IAU pour transmettre des données. La présente invention permet à des systèmes de communication utilisant diverses technologies d'accès de fonctionner indépendamment et de prendre en charge l'itinérance des utilisateurs entre lesdits systèmes, et réduit les retards temporels dans les services aux utilisateurs.
PCT/CN2006/001412 2005-06-21 2006-06-21 Reseau de communication mobile et procede de communication associe WO2006136103A1 (fr)

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