WO2012129923A1 - 接入网网元、接入网络系统及接入方法 - Google Patents

接入网网元、接入网络系统及接入方法 Download PDF

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Publication number
WO2012129923A1
WO2012129923A1 PCT/CN2011/083073 CN2011083073W WO2012129923A1 WO 2012129923 A1 WO2012129923 A1 WO 2012129923A1 CN 2011083073 W CN2011083073 W CN 2011083073W WO 2012129923 A1 WO2012129923 A1 WO 2012129923A1
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Prior art keywords
base station
home base
access network
function
gateway
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PCT/CN2011/083073
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English (en)
French (fr)
Inventor
谢峰
张银成
奚进
毛磊
朱进国
陈琳
韩立锋
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中兴通讯股份有限公司
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Publication of WO2012129923A1 publication Critical patent/WO2012129923A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04Large scale networks; Deep hierarchical networks
    • H04W84/042Public Land Mobile systems, e.g. cellular systems
    • H04W84/045Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B

Definitions

  • Access network element access network system and access method
  • the present invention relates to the field of wireless communication technologies, and in particular, to an access network element, an access network system, and an access method. Background technique
  • the widespread use of wireless communication technologies has brought about changes in the way people live their lives and continues to serve the improvement of quality of life.
  • the current representative wireless communication technologies include the GSM/UMTS/LTE standard developed or maintained by the 3GPP (3rd Generation Partnership Project) standards organization, and the CDMA-2000 standard and its predecessor CDMA developed by the 3GPP2 (3rd Generation Partnership Project2) standards organization.
  • IS-95, the 802.16e and 802.16m standards developed by the IEEE 802.16 working group also known as the Wimax air interface standard
  • the 802.11 family of standards or WIFI standards developed by the IEEE 802.11 working group, including 802.11a, 802.11b, 802.1 lg, 802.11 ⁇ , 802.11ac.
  • the standards of 3GPP and 3GPP2 are mainly established for the Wireless Wide Area Network, and thus are also considered as wireless WAN communication technologies, and the IEEE 802.16 standard (or Wimax standard) is mainly It is developed for the Wireless Metropolitan Area Network and is therefore considered to be a wireless metropolitan area network communication technology; and the IEEE 802.11 series of standards (or WIFI standards) is mainly for the Wireless Local Area Network. Therefore, it is also considered to be a wireless LAN communication technology.
  • Evolved Packet System which is evolved by the universal terrestrial radio access network (Evolved).
  • E-UTRAN Evolved Packet Core
  • EPC Evolved Packet Core
  • the base station E-UTRAN NodeB, eNB
  • UE user equipment
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • the SI interface is connected, and the interface between the eNB and the MME is called an SI-MME or an S1-C interface, and the interface between the eNB and the S-GW is called an S1-U interface.
  • Both the MME and the S-GW belong to the core network (EPC) node.
  • the LTE standard can also be applied in a wireless local area network (for example, in a home, enterprise network, or public hotspot coverage scenario). At this time, the LTE standard optimizes the above architecture for the usage environment, and the optimized architecture is shown in FIG. 2.
  • the function of the home base station (Home eNB, HeNB) is similar to that of the eNB, but the home base station adds a collocated local gateway (L-GW) function (the local gateway has packet data).
  • L-GW local gateway
  • P-GW Packet Data Network Gateway
  • the increase of the local gateway is mainly to implement the Local IP Access (LIP) function, so that when the user uses the Internet service, the local gateway can directly go through the local
  • LIP Local IP Access
  • the gateway interacts with the Internet without having to go through the S-GW and P-GW located in the EPC, thereby reducing the load on the core network.
  • the S5 interface is used between the L-GW and the S-GW co-located with the HeNB.
  • the home base station gateway (HeNB GW, HeGW) can be optionally deployed between the HeNB and the MME/S-GW, and one of its functions is to relay S1 signaling.
  • FIG. 3 is also a system architecture diagram of an LTE home base station with local IP access function.
  • a Secure Gateway SeGW
  • HMS HeNB Management System
  • the function of the security gateway is to provide security for the connection between the home base station in the user environment and the home base station gateway, the core network element, and the home base station management system in the operator environment, and the home base station management system has the base station management system. Manage some of the features of maintenance.
  • Home base station management system and security gateway and other network elements The interface between the two is not within the scope of the 3GPP standard.
  • the LTE standard home base station architecture is mainly based on the basic architecture of LTE E-UTRAN. Therefore, although it is also aimed at wireless LAN environments such as homes and enterprises, the complexity of its architecture far exceeds that of WLAN standard (or WIFI standard) designed by Wirless Local Access Network (WLAN).
  • the WLAN standard has two architectures. One architecture mainly provides access to terminals or mobile stations (MS).
  • the access point (AP) of the service is composed, and the other structure is that an access control node (AC) is added outside the AP, and one AC can manage multiple APs.
  • the overly complex LTE home base station architecture brings certain difficulties to its deployment and application, and becomes a shortcoming of its competition with WIFI.
  • WIFI signaling and data are mainly transmitted between AC, AP, and MS, while LTE signaling and data are required at UE, HeNB, HeGW, and MME.
  • the transmission between the S-GW and the L-GW is not only complicated, but also causes a large overhead and delay. Summary of the invention
  • the main object of the present invention is to provide an access network element, an access network system, and an access method, which are used to solve the problem that the architecture of the LTE home base station system is too complicated, and the overhead and delay are too large.
  • An access network element where the access network element includes:
  • a service gateway function module configured to integrate the service gateway function into the access network element
  • a packet data gateway function module configured to integrate the packet data gateway function into the access network element
  • the packet data gateway function includes a data interaction function with the Internet, and the user terminal exchanges data with the Internet through the access network element.
  • the service gateway function module is configured to perform at least one of the following functions: as a mobility anchor when switching;
  • the packet data gateway function includes support and policy and charging rule functions.
  • the Gx interface between the PCRFs, the access network element and the policy and charging rule function PCRF exchange policy and charging rule information through the Gx interface.
  • the access network element further includes:
  • a mobility management entity function module configured to integrate a mobility management entity function into the access network element;
  • the mobility management entity function includes terminating a non-access layer NAS signaling function, where the access network element terminates The access layer NAS signaling;
  • the mobility management entity function further includes supporting an S6a interface function with the home subscriber server HSS, and the access network element interacts with the HSS through the S6a interface.
  • connection between the access network element and the core network is through a security gateway, and the security gateway provides security protection for the connection between the access network element and the core network.
  • the access network element receives installation information and/or configuration information from the management system during installation and/or configuration.
  • the access network element is a home base station gateway, and the home base station gateway is connected to one or more home base stations, and the service gateway function includes supporting an S1 interface with a home base station, where the home base station gateway and the home The base stations interact through the S1 interface.
  • the access network element is a home base station.
  • An access network system which includes: a home base station, configured to provide a radio resource for a user terminal, and is connected to a home base station gateway through an S1 interface; the home base station further supports X2. Interface, used for interaction between home base stations;
  • a home base station gateway configured to connect to one or more home base stations, where the home base station gateway
  • the service gateway function and the packet data gateway function wherein the packet data gateway function includes a data interaction function with the Internet, and the service gateway function includes supporting a handover as a mobility anchor.
  • the home base station gateway further integrates a mobility management entity function, and the mobile management entity function includes terminating the non-access stratum NAS signaling function and including the S6a interface function between the support and the home subscriber server HSS.
  • the packet data gateway function includes supporting a Gx interface between the policy and charging rule function PCRF, and the policy and charging rule function PCRF is used to perform a policy and the Gx interface. Interaction of billing rule information.
  • connection between the home base station gateway and the core network is through a security gateway, and the security gateway provides security protection for the connection between the home base station gateway and the core network.
  • the access network system includes:
  • the home base station is configured to provide a wireless resource for the user terminal, the home base station further includes a service gateway function and a packet data gateway function, wherein the packet data gateway function includes a data interaction function with the Internet;
  • the function includes supporting the handover as a mobility anchor; the home base station further supports an X2 interface for interaction between the home base stations.
  • the home base station further integrates a mobility management entity function, and the mobility management entity function includes terminating the non-access stratum NAS signaling function and including the S6a interface function between the support and the home subscriber server HSS.
  • the packet data gateway function includes supporting a Gx interface with a policy and charging rule function PCRF, and the policy and the meter are performed between the home base station and the policy and charging rule function PCRF through the Gx interface. The interaction of fee rule information.
  • connection between the home base station and the core network is through a security gateway, and the security gateway provides security protection for the connection between the home base station and the core network.
  • An access method is provided, which is applied to a converged service network, based on an embodiment of the present invention.
  • the access network element of the function and the packet data gateway function, the method includes:
  • the access network element After receiving the attach request of the terminal, the access network element transparently transmits the message to the mobility management entity.
  • the MME then the UE, the mobility management entity MME, and the home subscriber server HSS interact to complete the authentication and location update process for the terminal;
  • the access network element interacts with the mobility management entity MME of the core network to complete a session creation process initiated by the mobility management entity MME of the core network;
  • the access network element interacts with the mobility management entity MME of the core network to complete an initial context establishment process initiated by the mobility management entity MME of the core network, and completes an RRC link reconfiguration process with the terminal;
  • the modification bearer process is performed between the access network element and the MME.
  • the access network element is a home base station;
  • the process of creating a session is specifically: the mobility management entity MME of the core network sends a create session request to the home base station, where the home base station allocates an IP address to the user, and determines Carrying a quality of service QoS, and then sending a create session response to the mobility management entity MME of the core network;
  • the modification bearer process is specifically:
  • the mobility management entity MME of the core network sends a modify bearer request to the home base station, and sends the S1 user plane information of the home base station to the home base station; the home base station returns a mobility management entity MME that modifies the bearer response to the core network.
  • the access network element includes a home base station and a home base station gateway, the home base station gateway combines a service gateway function and a packet data gateway function, and the home base station gateway is connected to one or more home base stations;
  • the process of creating a session is specifically:
  • the mobility management entity MME of the core network sends a create session request to the home base station gateway, the home base station gateway allocates an IP address to the user, determines a bearer quality of service QoS, and then sends a create session response to the mobility management entity MME of the core network;
  • the modification bearer process is specifically:
  • the mobility management entity MME of the core network sends a modify bearer request to the home base station gateway, and sends the S1 user plane information of the home base station to the home base station gateway; the home base station gateway returns a mobile terminal to modify the bearer response to the core network.
  • Management entity MME is responsible for managing the Home base station gateway.
  • another access method is provided, which is applied to an access network element that integrates a service gateway function, a packet data gateway function, and a mobility management entity function, and the method includes:
  • the access network element After receiving the NAS message that is sent by the terminal and including the attach request, the access network element performs NAS authentication on the terminal.
  • the access network element performs an initial context establishment process, and completes an RRC link reconfiguration process with the terminal;
  • the access network element After the access network element receives the attach complete message sent by the terminal directly, the access network element performs a bearer modification process.
  • the access network element includes a home base station and a home base station gateway, and the home base station gateway combines a service gateway function, a packet data gateway function, and a mobility management entity function, where the home base station gateway connects one or more families Base station
  • a session creation process is completed between the mobile management entity function and the service gateway function embedded in the home base station gateway, and the packet data gateway function is The terminal allocates an IP address;
  • the process of performing the initial context establishment process by the access network element and completing the RRC link reconfiguration process with the terminal specifically includes:
  • the home base station gateway initiates an initial context setup request carrying the quality of service QoS allocated to the user to the home base station, and the home base station initiates an RRC link reconfiguration procedure to the terminal, And the terminal negotiates the related radio parameters, establishes the bearer resource of the bearer, and after the terminal completes the bearer establishment, sends an RRC link reconfiguration complete message to the home base station, where the home base station sends an initial context setup response to the home base station gateway.
  • the access network element is a home base station, and the access network element performs an initial context establishment process, and completes an RRC link reconfiguration process with the terminal, specifically:
  • a session creation process is completed between the mobility management entity function and the service gateway function embedded in the home base station, and the packet data gateway function allocates an IP address to the terminal;
  • the home base station After completing the initial context establishment process, the home base station initiates an RRC link reconfiguration process to the terminal, and negotiates relevant radio parameters with the terminal to establish a bearer air interface resource. After the terminal completes the bearer establishment, the RRC link is sent to the home base station. With completion message.
  • the invention simplifies the system architecture of the LTE home access network by integrating the service gateway function, the packet data gateway function and the mobility management entity function in the access network element, and reduces the overhead and delay.
  • FIG. 1 is a schematic diagram of a basic system architecture of an existing E-UTRAN
  • 2 is an E-UTRAN system architecture in which a home base station gateway is deployed
  • Figure 3 is a logical architecture of a home base station system supporting the LIPA function
  • FIG. 4 is a structural diagram of an E-UTRAN home access network deployed with a home base station gateway with S-GW and P-GW functions according to Embodiment 1 of the present invention
  • FIG. 5 is a logical architecture diagram of a home access network system deployed with a home base station gateway with S-GW and P-GW functions according to Embodiment 1 of the present invention
  • FIG. 6 is a user plane protocol stack (air interface) diagram of a home access network system deployed with a home base station gateway with S-GW and P-GW functions according to Embodiment 1 of the present invention
  • FIG. 7 is a control plane protocol stack (air interface) diagram of a home access network system in which a home base station gateway with an S-GW and a P-GW function is provided according to Embodiment 1 of the present invention
  • 8 is a user plane protocol stack (S1-U interface protocol) diagram of a home access network system deployed with a home base station gateway with S-GW and P-GW functions according to Embodiment 1 of the present invention
  • S1-MME interface control plane protocol stack
  • FIG. 10 is a flow chart of UE attachment of a home access network system deployed with a home base station gateway with S-GW and P-GW functions according to Embodiment 1 of the present invention
  • FIG. 11 is a structural diagram of an E-UTRAN home access network deployed with a home base station with S-GW and P-GW functions according to Embodiment 2 of the present invention
  • FIG. 12 is a logical architecture diagram of a home access network system deployed with a home base station with S-GW and P-GW functions according to Embodiment 2 of the present invention
  • FIG. 13 is a control plane protocol stack (air interface) diagram of an E-UTRAN home access network deployed with a home base station with S-GW and P-GW functions according to Embodiment 2 of the present invention
  • S1-MME interface control plane protocol stack
  • FIG. 15 is a flow chart of UE attachment of a home access network system deployed with a home base station with S-GW and P-GW functions according to Embodiment 2 of the present invention
  • 16 is a structural diagram of an E-UTRAN home access network deployed with a home base station gateway with MME, S-GW, and P-GW functions according to Embodiment 3 of the present invention
  • FIG. 17 is a logical architecture diagram of a home access network system deployed with a home base station gateway with MME, S-GW, and P-GW functions according to Embodiment 3 of the present invention
  • FIG. 18 is a control plane protocol stack (air interface) diagram of an E-UTRAN home access network deployed with a home base station gateway with MME, S-GW, and P-GW functions according to Embodiment 3 of the present invention
  • FIG. 19 is a view of the present invention
  • 20 is a flowchart of UE attachment of a home access network system deployed with a home base station gateway with MME, S-GW, and P-GW functions according to Embodiment 3 of the present invention
  • FIG. 21 is a structural diagram of an E-UTRAN home access network deployed with a home base station with MME, S-GW, and P-GW functions according to Embodiment 4 of the present invention
  • FIG. 22 is a logical architecture diagram of a home access network system deployed with a home base station with MME, S-GW, and P-GW functions according to Embodiment 4 of the present invention
  • FIG. 23 is a control plane protocol stack (air interface) diagram of a home access network system in which a home base station with MME, S-GW, and P-GW functions is provided according to Embodiment 4 of the present invention
  • FIG. 24 is a flowchart of UE attachment of a home access network system in which a home base station with MME, S-GW, and P-GW functions is provided according to Embodiment 4 of the present invention. detailed description
  • WIFI also known as IEEE 802.il communication technology, or the name of WLAN
  • 802.11a/b/g/n 802.11a/b/g/n
  • HNB home base station
  • a mobile station (MS) in WIFI is basically equivalent to a user equipment (UE) defined by 3GPP;
  • the local area network (LAN) and the wireless local area network (WLAN) are basically equivalent to the home base station system (HNB/HeNB system) in 3GPP.
  • HNB/HeNB system home base station system
  • AP access point
  • the access point (AP) in the WIFI is basically equivalent to the home base station (HNB or HeNB) defined by the 3GPP
  • the access control node (AC) in the WIFI is basically equivalent to the home base station gateway defined by the 3GPP.
  • the home base station or home (access) network or home base station system mentioned in 3GPP does not limit the system to be used only in the home, in fact its The usage scenario basically overlaps with the usage scenario of WIFI, covering various applicable scenarios from home, enterprise to public deployment.
  • the mentioned home base station (HeNB) and home base station gateway (HeGW) are named after 3GPP, they may also be referred to as LTE LAN AP and LTE LANAC, or other similar functional divisions but names Different network elements.
  • the home access network is equivalent to the LTE LAN, and the home base station management system (HeMS) may also be a general network management system (OAM).
  • the architecture of the LTE home base station system is far more complicated than that of the WLAN, which causes problems such as multiple signaling, large delay, high cost, and difficulty in deployment, which brings many difficulties to the deployment and promotion of the LTE home base station.
  • the present invention proposes a new LTE home access network system architecture (or a new LTE LAN system architecture), which can effectively reduce system complexity, reduce signaling between network elements, and reduce delay. It is beneficial to the application and promotion of LTE home base station system.
  • Core network EPC functions mainly include user authentication, mobility management, data and signaling encryption, etc. Through these controls, user management and control and accurate billing operations are realized.
  • EPC functions are mainly implemented by an entity such as an MME, an S-GW, a P-GW, and an HSS.
  • specific functions of the core network elements are as follows:
  • MME Mobile Management Entity
  • Service processing based on NAS signaling (2) Security (encryption and integrity protection) protection for NAS signaling; (3) Accessibility of Idle state UE (including control and execution of paging) ()) Tracking Area list management; (5) Number of groups According to the gateway and the service gateway; (6) when the handover needs to change the MME, the MME chooses; (7) when switching to the 2G or 3G network, the GPRS service support node (SGSN) is selected; (2) performing roaming management; (9) authenticating and authorizing users; (10) carrying management functions including proprietary bearer establishment; (11) lawful interception; (12) transmitting alarm messages; (13) UE reachability function; (14) S1 connection management; (15) security control; (16) user switching control under the MME.
  • SGSN GPRS service support node
  • S-GW Serving Gateway
  • P-GW Packet Data Gateway
  • HSS is a functional entity that stores user subscription information, and its logical functions include:
  • PCRF Policy and Charging Rules Function
  • PCRF Policy and Charging Rules Function
  • PCEF Policy and Charging Enforcement Function
  • the interface between the network elements mainly involved in the present invention includes:
  • the S1-MME interface is a control plane protocol interface (between E-UTRAN and MME;); (2) The S1-U interface is an interface between the E-UTRAN and the serving gateway, and is mainly used for user plane tunnels (user) Plane tunneling) and path change between base stations during handover;
  • the X2 interface is an interface between base stations to support handover and/or information transmission and/or data transmission between base stations;
  • the S6a interface is configured to enable the transfer of the subscription and authentication data between the MME and the HSS to perform authentication/authorized user access to the system;
  • the Gx interface provides policy and charging enforcement functions from the PCRF to the packet data gateway.
  • PCEF Quality of Service
  • the S10 interface is an interface between the MMEs for relocating information of the MME and the MME to the MME;
  • the SI 1 interface is an interface between the MME and the serving gateway;
  • the SGi interface is the interface between the Packet Data Gateway (P-GW) and the packet data network.
  • the packet data network may be a public or private packet data network external to the operator, or a packet data network within the operator, for example, an IP Multimedia Service (IMS).
  • IMS IP Multimedia Service
  • FIG. 4 is a structural diagram of a home access network system of a home base station gateway with a (partial or full) serving gateway S-GW function and a (partial or full) packet data gateway P-GW function according to Embodiment 1 of the present invention.
  • an LTE home access network (HAN, or LTE radio station or network) is composed of a home base station gateway and one or more home base stations controlled by the same.
  • the S1 interface is supported between the home base station (HeNB) and the home base station gateway (HGW), wherein the control plane supports the S 1 -C or S 1 -MME interface, which is used for signaling of the interactive control plane, and the user plane supports the S1-U interface. Used to exchange business data.
  • the X2 interface is supported between the home base stations, wherein the control plane supports the X2-C interface for interactive control plane signaling, and the user plane supports the X2-U interface for transmitting user data.
  • FIG. 5 is a logical architecture diagram of an LTE home access network system deployed with a home base station gateway with a serving gateway function S-GW and a packet data gateway P-GW according to Embodiment 1 of the present invention.
  • the S1 interface is supported between the home base station (HeNB) and the home base station gateway (HeGW), and the control plane supports the S1-C or S1-MME interface, which is used for signaling of the interaction control plane, and the user plane supports the S1 interface.
  • -U interface used to exchange business data.
  • the home base station gateway (since it includes the service gateway function) supports the S1-MME interface with the mobility management entity (MME) network element of the core network.
  • MME mobility management entity
  • the home base station gateway since it includes the packet data gateway function
  • the Gx interface with the policy and charging rule function PCRF.
  • the home base station gateway is located in the enterprise network or the local area network, and the connection between the home base station gateway and the core network element (such as the mobility management entity, policy and charging rule function) needs to be secure.
  • the gateway (SeGW), the security gateway also provides security for the connection between the home base station gateway and the core network element.
  • the connection between the home base station/home base station gateway and the home base station management system (HeMS) also needs to pass through a security gateway (SeGW), which also provides security for the connection between the home base station/home base station gateway and the home base station management system. protection.
  • the connection between the home base station/home base station gateway and the home base station management system may not be defined in the 3GPP standard, and thus the interfaces between them are not directly drawn in the figure.
  • the home base station gateway provided by the first embodiment of the present invention is also provided with the S-GW and the P-GW (all or part of), and thus the S-GW and the P-GW support the interface. Can be supported (in whole or in part).
  • the functions of the home base station provided by Embodiment 1 of the present invention include part or all of the following functions: (1) Radio Resource Management (RRM) function.
  • Wireless Resource management includes some or all of the following functions: Radio Bearer Control, Radio Admission Control, Connection Mobility Control, and dynamic allocation of uplink and downlink resources (ie, scheduling); 2) performing IP header compression and encryption on user data; (3) discovering/selecting a suitable home base station gateway; (4) routing user plane data to the home base station gateway; (5) scheduling and transmitting paging information (from the home base station) (6) scheduling and transmitting broadcast information (from the home base station gateway or home base station management system); (7) configuration for measurement and reporting of mobility and scheduling; (8) Closed Subscriber Group (CSG) (9) support the functions of the self-organizing network, such as self-installation, self-configuration; (10) establishing a connection with the home base station management system, obtaining and/or updating system parameters;
  • RRM Radio Resource Management
  • the function of the home base station gateway provided by Embodiment 1 of the present invention includes part or all of the following functions:
  • the related protocol stack is as follows:
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Medium Access Control
  • PHY Physical protocol
  • NAS Non-Access Stratum
  • RRC Radio Resource Control
  • GTP is a GPRS Tunnelling Protocol (GTP) protocol
  • UDP is a User Datagram Protocol protocol
  • L2 and L2 respectively represent Layer 2 and Layer 1 Agreement.
  • S1-MME interface is a schematic diagram of a control plane protocol stack (S1-MME interface) provided by Embodiment 1 of the present invention: where S1-AP is an S1 application layer protocol (SI Application Protocol, Sl-AP), and SCTP is a flow control transmission protocol (Stream Control). Transmission Protocol, SCTP).
  • SI Application Protocol Sl-AP
  • SCTP flow control transmission protocol
  • Step 1001 A UE sends a NAS message "attach request" to an MME through a HeNB; wherein the NAS message may be included in the RRC signaling, and the HeNB does not interpret The NAS message of the UE;
  • Step 1002 The HeNB transparently transmits the NAS message to the HeGW, and then transparently transmits the message to the MME by the HeGW.
  • Step 1003 The MME performs NAS authentication and security detection on the UE.
  • Step 1004 The MME initiates a location update request to the HSS to obtain user data.
  • Step 1005 The HSS returns an MME location update response with user subscription data.
  • Step 1006 The MME initiates a session creation to the HeGW (because it has the S-GW function) Request;
  • Step 1007 the HeGW allocates a user IP address (because it has a P-GW function;), determines bearer QoS, and then returns an MME to create a session response.
  • Step 1008 The MME initiates an initial context setup request to the HeGW, with the bearer QoS determined by the HeGW (S-GW function); the HeGW forwards to the HeNB.
  • Step 1009 The HeNB initiates an RRC link reconfiguration process to the UE, and negotiates related radio parameters with the UE to establish a bearer air interface resource.
  • Step 1010 After completing the bearer establishment, the UE returns the HeNB RRC link reconfiguration completion.
  • Step 1011 The HeNB returns an initial context setup response to the MME, and the message is forwarded by the HeGW.
  • Step 1012 The UE sends a "direct delivery" message to the HeNB, where the "attach complete” message is included;
  • Step 1013 The HeNB sends an "attach complete" message to the MME, and the message is transparently transmitted by the HeGW. (After receiving the attach accept message and obtaining the IP address, the UE may send the uplink data to the HeNB, and the sent uplink data is sent through the HeNB. Transfer to HeGW)
  • Step 1014 The MME initiates a modify (update) bearer request to the HeGW (S-GW function module), and sends the SI user plane information of the HeNB to the HeGW (S-GW function module); Step 1015, HeGW (S-GW) Function module) returns a modified (updated) bearer response.
  • Figure 11 is a diagram of a home access network system architecture with a home base station with (partial or full) service gateway functionality and (partial or full) packet data gateway functionality deployed.
  • an LTE home access network (HAN, or LTE wireless local area network) is composed of a home base station (or an access point).
  • the X2 interface is supported between the home base stations, wherein the control plane supports the X2-C interface for interactive control plane signaling, and the user plane supports the X2-U interface for transmitting user data.
  • Figure 12 is a logical architecture diagram of an LTE home access network system in which a home base station with a serving gateway function and a packet data gateway function is deployed.
  • the home base station supports an S1 interface with a mobility management entity of the core network, and the home base station (since it includes a serving gateway function) supports an S11 interface with a mobility management entity of the core network, and the home base station (because it includes packet data)
  • the gateway function optionally supports the Gx interface with the policy and charging rule function PCRF. In addition, some interfaces are not shown in the figure, these are connected
  • the port may have, the home base station gateway (since it includes the packet data gateway function) optionally supports the SGi interface with the carrier IP service network element.
  • the home base station is located in the enterprise network or the local area network, and the connection between the home base station and the core network element (for example, the mobility management entity, the home subscriber server, the policy and the charging rule function) needs to pass through the security gateway (SeGW).
  • the security gateway also provides security for the connection between the home base station and the core network element.
  • the connection between the home base station and the home base station management system (HeMS) also needs to pass through a security gateway (SeGW), which also provides security for the connection between the home base station and the home base station management system.
  • the connection between the home base station and the home base station management system may not be defined in the 3GPP standard, and thus the interface between them is not directly drawn in the figure.
  • the functions of the home base station include some or all of the following functions:
  • Radio resource management RRM function Radio resource management includes some or all of the following functions: radio bearer control, radio access control, connection mobility control, dynamic allocation of uplink and downlink resources (ie, scheduling); (2) performing IP header compression and encryption on user data; Scheduling and transmitting broadcast information (from mobile management entity or home base station management system); (4) configuration for measurement and reporting of mobility and scheduling; (5) closed user group CSG processing; (6) supporting self-organizing network Features, such as self-installation, self-configuration; (7) support for local IP access (LIPA) functionality (UE can interact with the Internet directly through the home base station without having to go through the carrier's core (8) lawful interception; (8) packet routing and forwarding; (10) uplink/downlink transport layer packet marking; (11) accounting for inter-operator charging; (12) offline charging function (13) uplink and downlink service layer charging; (14) uplink and downlink service layer rate execution; (15) dynamic IP address allocation (DHCP) function; (16) up and down Bearer binding; (17) upstream bearer binding verification; (18) per
  • the definitions of the MME, the HSS, the PCRF, and other related interfaces in this embodiment refer to Embodiment 1.
  • the related protocol stack is as follows:
  • the user plane protocol stack (air interface) diagram of this embodiment is the same as that of the embodiment 1 (ie, FIG. 6), and is not repeated here.
  • Figure 13 is the control plane protocol stack (air interface).
  • the NAS signaling is terminated at the MME. Since the HeNB integrates the S-GW/P-GW function, there is no user plane protocol stack of the S1 interface.
  • Figure 14 is a control plane protocol stack (S1-MME interface).
  • Fig. 15 is a flowchart of UE attachment according to the present embodiment.
  • the method includes the following steps: Step 1501: The UE sends a NAS message "attach request" to the MME through the HeNB.
  • the NAS message may be included in the RRC signaling, and the HeNB does not interpret the NAS message of the UE.
  • Step 1502 the HeNB transparently Passing the NAS message to the MME;
  • Step 1503 The MME performs NAS authentication and security detection on the UE.
  • Step 1504 The MME initiates a location update request to the HSS to obtain user data.
  • Step 1505 The HSS returns an MME location update response with user subscription data.
  • Step 1506 The MME initiates a session creation with the HeNB (because it has the S-GW function) Requesting;
  • Step 1507 the HeNB allocates a user IP address (because it has a P-GW function;), determining the bearer
  • Step 1508 the MME initiates an initial context setup request to the HeNB, with the HeNB (
  • Step 1509 The HeNB initiates an RRC link reconfiguration process to the UE, and negotiates related radio parameters with the UE to establish a bearer air interface resource.
  • Step 1510 After completing the bearer establishment, the UE returns the HeNB RRC link reconfiguration completion.
  • Step 1511 The HeNB returns an initial context establishment response to the MME.
  • Step 1512 the UE sends a "direct delivery" message to the HeNB, including an "attach complete” message;
  • Step 1513 The HeNB sends an "attach complete" message to the MME. (After receiving the attach accept message and obtaining the IP address, the UE may send the uplink data to the HeNB, and the uplink number sent. According to HeNB to the Internet ;)
  • Step 1514 The MME initiates a modify (update) bearer request to the SeNB (the S-GW function module), and sends the S1 user plane information of the HeNB to the SeNB (the S-GW function module).
  • Step 1515 the HeNB (S-GW) Function module) returns a modified (updated) bearer response.
  • the HeNB can start transmitting buffered downlink data;
  • FIG. 16 is a diagram showing the architecture of a home access network system in which a home base station gateway with a mobility management entity function, a service gateway function, and a packet data gateway function is deployed.
  • an LTE Home Access Network (HAN, or LTE WLAN) is composed of a home base station gateway and one or more home base stations controlled by the same.
  • the S1 interface is supported between the home base station (HeNB) and the home base station gateway (HeGW).
  • the control plane supports the S1-C or S1-MME interface, and is used for signaling of the interactive control plane.
  • the user plane supports the S1-U interface.
  • the X2 interface is supported between the home base stations, and the control plane supports the X2-C interface for interactive control plane signaling, and the user plane supports the X2-U interface for transmitting user data.
  • Figure 17 is a logical architecture diagram of an LTE home access network system deployed with a home base station gateway with mobility management entity functionality, serving gateway functionality, and packet data gateway functionality.
  • the S1 interface is supported between the home base station (HeNB) and the home base station gateway (HeGW), wherein the control plane supports the S1-C interface, that is, the S1-MME interface, and is used for signaling of the interaction control plane, and the user plane supports the S1 interface.
  • -U interface used to exchange business data.
  • the home base station gateway (since it includes the mobility management entity function) supports the S6a interface with the home network server HSS network element of the core network, and the home base station gateway (since it includes the packet data gateway function) optional support and policy and charging rule function PCRF Between the Gx interface.
  • some interfaces are not shown in the figure, these interfaces may have, the home base station gateway (due to its inclusion of packet data gateway function) optional support and operation
  • the home base station gateway is located in the enterprise network or the local area network, and the connection between the home base station gateway and the core network element (such as the home subscriber server, policy and charging rule function) needs to be secure.
  • the gateway (SeGW), the security gateway also provides security for the connection between the home base station gateway and the core network element.
  • the connection between the home base station/home base station gateway and the home base station management system (HeMS) also needs to pass through a security gateway (SeGW), which also provides security for the connection between the home base station/home base station gateway and the home base station management system. protection.
  • the connection between the home base station/home base station gateway and the home base station management system may not be defined in the 3GPP standard, and thus the interfaces between them are not directly drawn in the figure.
  • the functions of the home base station include some or all of the following functions:
  • Radio resource management includes some or all of the following functions: radio bearer control, radio access control, connection mobility control, dynamic allocation of uplink and downlink resources (ie, scheduling); (2) performing IP header compression and encryption on user data; Discover/select a suitable home base station gateway; (4) route user plane data to the home base station gateway; (5) schedule and transmit paging information (from the home base station gateway); (6) schedule and transmit broadcast information (from the home) (7) base station gateway or home base station management system); (7) configuration for measurement and reporting of mobility and scheduling; (8) closed user group CSG processing; (9) support for self-organizing network functions, such as self-installation ), self-configuration; (10) establishing a connection with the home base station management system to acquire and/or update system parameters.
  • the functions of the home base station gateway include some or all of the following functions (some of which are derived from some of the functions and interfaces of the MME/S-GW/P-GW embedded in the home base station gateway):
  • the related protocol stack is as follows.
  • the user plane protocol stack (air interface) is the same as that of the embodiment 1 (ie, FIG. 6).
  • FIG. 18 is a control plane protocol stack (air interface) diagram. As shown in the figure, the NAS signaling is terminated at the HeGW.
  • the User Plane Protocol Stack (S1-U Interface Protocol) is the same as Embodiment 1 (ie, Figure 8).
  • Figure 19 is a control plane protocol stack (S1-MME interface) diagram.
  • Fig. 20 is a flowchart of UE attachment according to the present embodiment. As shown in FIG. 20, the method includes the following steps: Step 2001: The UE sends a NAS message "attach request" to the HeGW through the HeNB (because it carries the MME function); wherein the NAS message may be included in the RRC signaling, and the HeNB does not interpret the NAS of the UE. Message
  • Step 2002 the HeNB transparently transmits the NAS message to the HeGW;
  • Step 2003 the HeGW (because it has the MME function) performs NAS authentication and security detection on the UE;
  • Step 2004, the HeGW (because it has the MME function) initiates a location update request to the HSS to obtain user data;
  • Step 2005 the HSS returns a HeGW location update response with user subscription data;
  • step 2006 the HeGW initiates an initial context setup request to the HeNB, with the bearer QoS determined by the HeGW (S-GW function);
  • the session creation process is completed between the MME function and the S-GW function embedded in the HeGW, and the PGW function embedded in the HeGW allocates an IP address to the UE;);
  • step 2007, the HeNB initiates an RRC link reconfiguration process to the UE, and negotiates relevant radio parameters with the UE to establish a bearer air interface resource.
  • Step 2008 After completing the bearer establishment, the UE returns the HeNB RRC link reconfiguration completion. In step 2009, the HeNB returns a HeGW initial context setup response.
  • the HeNB sends an "attach complete" message to the HeGW.
  • the UE may send the uplink data to the HeNB, and the sent uplink data is sent to the HeGW by the HeNB and then sent by the HeGW.
  • FIG. 21 is a diagram showing the architecture of a home access network system in which a home base station having a mobility management entity function, a service gateway function, and a packet data gateway function is deployed.
  • an LTE home access network (HAN, or LTE wireless local area network) is composed of a home base station (or an access point).
  • the X2 interface is supported between the home base stations, and the control plane supports the X2-C interface for interactive control plane signaling, and the user plane supports the X2-U interface for transmitting user data.
  • Figure 22 shows the deployment of the mobile management entity function, the service gateway function, and the packet data gateway function.
  • the home base station (since it includes the mobility management entity function) supports the S6a interface with the home subscriber server HSS network element of the core network, and the home base station (since it includes the packet data gateway function) optional support and policy The fee rule functions the Gx interface between PCRFs.
  • the home base station gateway (since it includes the packet data gateway function) optionally supports the SGi interface with the carrier IP service network element.
  • the home base station is located in the enterprise network or the local area network, and the connection between the home base station and the core network element (for example, the mobility management entity, the home subscriber server, the policy and the charging rule function) needs to pass through the security gateway (SeGW).
  • the security gateway also provides security for the connection between the home base station and the core network element.
  • the connection between the home base station and the home base station management system (HeMS) also needs to pass through a security gateway (SeGW), which also provides security for the connection between the home base station and the home base station management system.
  • the connection between the home base station and the home base station management system may not be defined in the 3GPP standard, and thus the interface between them is not directly drawn in the figure.
  • the functions of the home base station include some or all of the following functions:
  • Radio resource management includes some or all of the following functions: radio bearer control, radio access control, connection mobility control, dynamic allocation of uplink and downlink resources (ie, scheduling); (2) performing IP header compression and encryption on user data; Scheduling and transmitting broadcast information (from the home base station or home base station management system); (4) configuration for measurement and reporting of mobility and scheduling; (5) closed user group CSG processing; (6) supporting self-organizing network functions , for example, self-installation, self-configuration; (7) establishing a connection with the home base station management system, acquiring and/or updating system parameters; (8) access control of the closed subscriber group (CSG) (access control); (9) member verification for hybrid cell; (10) support local IP access (LIPA) function (UE can directly interact with the Internet through the home base station without having to Route through the operator's core network (11) terminate NAS signaling; (12) security control; (13) NAS signaling (signaling); (14) NAS signaling security (encryption and integrity protection); (15) when switching needs When
  • the related protocol stack is as follows.
  • the user plane protocol stack (air interface) of this embodiment is the same as that of Embodiment 1 (ie, FIG. 6);
  • FIG. 23 is a control plane protocol stack (air interface) diagram.
  • the NAS signaling is used by the HeNB (because it integrates the MME).
  • the function) is the end.
  • Fig. 24 is a flowchart of UE attachment according to the present embodiment. As shown in FIG. 24, the method includes the following steps: Step 2401: The UE sends an "attach request" to the HeNB (because it has the MME function);
  • the NAS message can be included in the RRC signaling
  • Step MO 2 the HeNB (because it has the MME function) performs NAS authentication and security detection on the UE;
  • Step 2403 the HeNB (because it has the MME function) initiates a location update request to the HSS to obtain user data.
  • Step 2404 The HSS returns a HeNB location update response with user subscription data.
  • Step 2405 The HeNB initiates an RRC link reconfiguration process to the UE, and negotiates relevant radio parameters with the UE to establish a bearer air interface resource. (Before, the session creation process is completed between the MME function and the S-GW function embedded in the HeNB, and the P-GW function embedded in the HeNB allocates an IP address to the UE;);
  • Step 2406 After the UE completes the bearer setup, the UE returns the HeNB RRC link reconfiguration complete. (The initial context is established internally within the HeNB)
  • Step 2407 the UE sends a "direct delivery" message to the HeNB, including an "attach complete” message; (after receiving the attach accept message and obtaining the IP address, the UE may send the uplink data to the HeNB, and the uplink data sent by the UE
  • the HeNB sends the Internet to the Internet; the bearer modification process is completed between the MME function and the S-GW function embedded in the HeNB, and then the HeNB can start to send the buffered downlink data;
  • the protocol stack of layer 2 of the user plane (air interface) and the control plane (air interface) in the present invention may be different from the embodiment in the embodiment, in which the protocol stack of layer 2 includes PDCP, RLC, and MAC protocols,
  • the present invention is not limited by the protocol stack of layer 2, that is, the case where the protocol stack of layer 2 is any protocol, for example, there is only one MAC protocol (the MAC protocol may integrate the original RLC protocol and/or PDCP protocol). All or part of the function).
  • the invention simplifies the system architecture of the LTE home access network by integrating the service gateway function, the packet data gateway function and the mobility management entity function in the access network element, and reduces the overhead and delay.

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Abstract

提供一种接入网网元、接入网络系统及接入方法,用于解决LTE家庭基站系统架构过于复杂及开销和时延过大的问题。本发明通过在接入网网元中融合服务网关功能、分组数据网关功能及移动管理实体功能,简化了LTE家庭接入网络的系统架构,减小了开销和时延。

Description

接入网网元、 接入网络系统及接入方法 技术领域
本发明涉及无线通信技术领域, 尤其涉及接入网网元、 接入网络系统 及接入方法。 背景技术
无线通信技术的广泛应用带来了人们日常生活方式的改变并且持续不 断地为生活质量的提高服务。 目前具有代表性的无线通信技术包括由 3GPP ( 3rd Generation Partnership Project ) 标准组织制定或者维护的 GSM/UMTS/LTE标准, 由 3GPP2 ( 3rd Generation Partnership Project2 )标 准组织制定的 CDMA-2000标准及其前身 CDMA IS-95 , 由 IEEE 802.16工 作组制定的 802.16e和 802.16m标准(这两项标准也称为 Wimax空口标准), 由 IEEE 802.11工作组制定的 802.11系列标准(或 WIFI标准),包括 802.11a, 802.11b, 802.1 lg, 802.11η, 802.11ac。
在以上这些具有代表性的无线通信技术中, 3GPP和 3GPP2的标准主 要是为无线广域网( Wireless Wide Area Network )制定的, 因而也被认为是 无线广域网通信技术, IEEE 802.16标准(或 Wimax标准 )主要是为无线城 或网( Wireless Metropolitan Area Network )制定的, 因而也被认为是无线城 域网通信技术; 而 IEEE 802.11系列标准(或 WIFI标准 )主要是为无线局 域网( Wireless Local Area Network )制定的, 因而也被认为是无线局域网通 信技术。
不同的无线通信技术因其针对的使用场景的不同, 而采用了不同的网 络架构或者说系统架构。 3GPP制定的 LTE标准的系统架构称为演进分组系 统( Evolved Packet System, EPS )是由演进的通用陆地无线接入网 (Evolved Universal Terrestrial Radio Access Network, E-UTRAN)和演进分组核心网 ( Evolved Packet Core, EPC )组成, 其中 E-UTRAN架构见附图 1 , 在该 架构中, 基站( E-UTRAN NodeB , eNB )是为用户设备 ( User Equipment, UE )提供无线接入的网络设备, 基站之间通过 X2接口连接, 而基站与移 动管理实体 ( Mobility Management Entity, MME )或者服务网关(Serving Gateway, S-GW ), 通过 SI接口连接, 其中 eNB与 MME间的接口称为 SI -MME或 S1-C接口, 而 eNB与 S-GW间的接口称为 S1-U接口。 MME 和 S-GW都属于核心网(EPC )节点。 LTE标准也可以应用在无线局域网中 (例如用于家庭、企业网或者公用的热点覆盖等场景), 这时 LTE标准针对 使用环境对以上的架构进行了优化, 优化后的架构如图 2。
在图 2的架构中, 家庭基站( Home eNB, HeNB )的功能与 eNB类似, 但是家庭基站增加了与其并置的 (collocated )本地网关 (Local Gateway, L-GW ) 功能 (本地网关具有分组数据网络网关 ( Packet Data Network Gateway, P-GW ) 的部分功能), 本地网关的增加主要是为了实现本地 IP 接入( Local IP Access , LIPA )功能, 这样当用户使用 Internet服务时, 可 以直接经过本地网关与互联网交互数据, 而不必经过位于 EPC中的 S-GW 和 P-GW, 从而减少核心网的负荷。 与 HeNB共站的 L-GW和 S-GW之间 使用 S5接口。另夕卜, 家庭基站网关(HeNB GW, HeGW )可选部署于 HeNB 和 MME/S-GW之间, 它的作用之一是中继 S1信令。
图 3也是具有本地 IP接入功能的 LTE 家庭基站的系统架构图,此图中 有两个新的网元, 即安全网关(Secure Gateway, SeGW )和家庭基站管理 系统( HeNB Management System , HeMS )。 安全网关的功能是为处于用户 环境中的家庭基站与运营商环境中的家庭基站网关、 核心网网元以及家庭 基站管理系统之间的连接提供安全保护, 而家庭基站管理系统具有对家庭 基站进行管理维护的一些功能。 家庭基站管理系统和安全网关与其它网元 间的接口不在 3GPP标准制定范围内。
LTE标准的家庭基站架构主要是在 LTE E-UTRAN基本架构的基础上 演变而来, 因此, 虽然它也是针对家庭、 企业这类无线局域网环境的, 但 其架构的复杂性远远超过主要是针对无线局域网 (Wirless Local Access Network, WLAN )设计的 WLAN标准(或称为 WIFI标准), WLAN标准 有两种架构, 一种架构主要是由为终端或者说移动站(Mobile Station, MS ) 提供接入服务的接入点 ( Access Point, AP )组成, 而另一种架构是在 AP 之外增加了接入控制节点( Access Controller, AC ),一个 AC可以管理多个 AP。
过于复杂的 LTE家庭基站架构给其部署和应用带来了一定的困难, 并 且成为其与 WIFI竟争的一个不足。 例如, 当在企业应用环境下使用互联网 服务时, WIFI的信令和数据主要在 AC、 AP和 MS三者之间进行传输, 而 LTE的信令和数据却需要在 UE、 HeNB、 HeGW、 MME、 S-GW、 L-GW之 间传输, 这样不仅复杂性高, 而且造成较大的开销和时延。 发明内容
有鉴于此, 本发明的主要目的在于提供一种接入网网元、 接入网络系 统及接入方法, 用于解决 LTE家庭基站系统架构过于复杂及开销和时延过 大的问题。
为达到上述目的, 本发明的技术方案是这样实现的:
一种接入网网元, 所述接入网网元中包括:
服务网关功能模块, 用于将服务网关功能融合到所述接入网网元中; 分组数据网关功能模块, 用于将分组数据网关功能融合到所述接入网 网元中。
进一步地, 所述分组数据网关功能包括与互联网交互数据功能, 用户 终端通过所述接入网网元与互联网交互数据。 进一步地, 所述服务网关功能模块至少用于执行以下功能之一: 切换时作为移动性锚点;
下行包緩存和发起网络触发的业务请求流程;
包路由和转发。
进一步地, 所述分组数据网关功能包含支持与策略和计费规则功能
PCRF之间的 Gx接口, 所述接入网网元与所述策略和计费规则功能 PCRF 之间通过所述 Gx接口进行策略和计费规则信息的交互。
进一步地, 所述接入网网元还包括:
移动管理实体功能模块, 用于将移动管理实体功能融合到所述接入网 网元中; 所述移动管理实体功能包括终结非接入层 NAS信令功能, 所述接 入网网元终结非接入层 NAS信令; 所述移动管理实体功能还包括支持与归 属用户服务器 HSS之间的 S6a接口功能,所述接入网网元与 HSS之间通过 S6a接口进行签约信息的交互。
进一步地, 所述接入网网元与核心网之间的连接通过安全网关, 所述 安全网关为所述接入网网元与核心网之间的连接提供安全保护。
进一步地, 所述接入网网元在安装和 /或配置过程中从管理系统接收安 装信息和 /或配置信息。
进一步地, 所述接入网网元为家庭基站网关, 所述家庭基站网关连接 一个或多个家庭基站,所述服务网关功能包括支持与家庭基站间的 S1接口, 所述家庭基站网关与家庭基站之间通过 S1接口交互。
进一步地, 所述接入网网元为家庭基站。
基于本发明实施例, 提供了一种接入网络系统, 该接入网络系统包括: 家庭基站, 用于为用户终端提供无线资源, 通过 S1接口与家庭基站网 关相连; 所述家庭基站还支持 X2接口, 用于家庭基站之间的交互;
家庭基站网关, 用于连接一个或多个家庭基站, 所述家庭基站网关融 合服务网关功能和分组数据网关功能, 其中所述分组数据网关功能包括与 互联网交互数据功能, 所述服务网关功能包括支持切换时作为移动性锚点。
进一步地, 所述家庭基站网关还融合移动管理实体功能, 所述移动管 理实体功能包括终结非接入层 NAS信令功能和包括支持与归属用户服务器 HSS之间的 S6a接口功能。
进一步地, 所述分组数据网关功能包括支持与策略和计费规则功能 PCRF之间的 Gx接口,所述家庭基站网关与所述策略和计费规则功能 PCRF 之间通过所述 Gx接口进行策略和计费规则信息的交互。
进一步地, 所述家庭基站网关与核心网之间的连接通过安全网关, 所 述安全网关为所述家庭基站网关与核心网之间的连接提供安全保护。
基于本发明实施例, 提供了另一种接入网络系统, 该接入网络系统包 括:
家庭基站, 该家庭基站除用于为用户终端提供无线资源外, 该家庭基 站还融合了服务网关功能和分组数据网关功能, 其中所述分组数据网关功 能包括与互联网交互数据功能; 所述服务网关功能包括支持切换时作为移 动性锚点; 所述家庭基站还支持 X2接口, 用于家庭基站之间的交互。
进一步地, 所述家庭基站还融合移动管理实体功能, 所述移动管理实 体功能包括终结非接入层 NAS信令功能和包括支持与归属用户服务器 HSS 之间的 S6a接口功能。
进一步地, 所述分组数据网关功能包括支持与策略和计费规则功能 PCRF之间的 Gx接口, 所述家庭基站与所述策略和计费规则功能 PCRF之 间通过所述 Gx接口进行策略和计费规则信息的交互。
进一步地, 所述家庭基站与核心网之间的连接通过安全网关, 所述安 全网关为所述家庭基站与核心网之间的连接提供安全保护。
基于本发明实施例, 提供了一种接入方法, 该方法应用于融合服务网 关功能和分组数据网关功能的接入网网元, 该方法包括:
接入网网元接收到终端的附着请求后透传该消息给移动管理实体
MME, 然后 UE、 移动管理实体 MME以及归属用户服务器 HSS交互完成 针对终端的鉴权及位置更新流程;
所述接入网网元与核心网的移动管理实体 MME之间进行交互,完成由 核心网的移动管理实体 MME发起的创建会话过程;
所述接入网网元与核心网的移动管理实体 MME之间进行交互,完成由 核心网的移动管理实体 MME发起的初始上下文建立过程,并完成与终端之 间的 RRC链接重配过程;
在完成附着流程后, 接入网网元与 MME间执行修改承载过程。
进一步地, 所述接入网网元为家庭基站; 所述创建会话过程具体为: 核心网的移动管理实体 MME向所述家庭基站发送创建会话请求,所述 家庭基站为用户分配 IP地址、 确定承载服务质量 QoS, 然后向核心网的移 动管理实体 MME发送创建会话响应;
所述修改承载过程具体为:
核心网的移动管理实体 MME向所述家庭基站发送修改承载请求,将所 述家庭基站的 S1用户面信息发送给所述家庭基站; 所述家庭基站返回修改 承载响应给核心网的移动管理实体 MME。
进一步地, 所述接入网网元包括家庭基站和家庭基站网关, 所述家庭 基站网关融合了服务网关功能和分组数据网关功能, 所述家庭基站网关连 接一个或多个家庭基站;
所述创建会话过程具体为:
核心网的移动管理实体 MME向所述家庭基站网关发送创建会话请求, 所述家庭基站网关为用户分配 IP地址、 确定承载服务质量 QoS, 然后向核 心网的移动管理实体 MME发送创建会话响应; 所述修改承载过程具体为:
核心网的移动管理实体 MME向所述家庭基站网关发送修改承载请求, 将所述家庭基站的 S1用户面信息发送给所述家庭基站网关; 所述家庭基站 网关返回修改承载响应给核心网的移动管理实体 MME。
基于本发明实施例, 提供了另一种接入方法, 该方法应用于融合服务 网关功能、 分组数据网关功能和移动管理实体功能的接入网网元, 该方法 包括:
接入网网元接收到终端发送的包含附着请求的 NAS消息后, 对终端进 行 NAS鉴权;
所述接入网网元与归属用户服务器 HSS之间执行位置更新, 并获取用 户数据;
所述接入网网元执行初始上下文建立过程, 并完成与终端之间的 RRC 链接重配过程;
所述接入网网元接收终端通过直接传递消息发送的附着完成消息后, 所述接入网网元执行承载修改过程。
进一步地, 所述接入网网元包括家庭基站和家庭基站网关, 所述家庭 基站网关融合了服务网关功能、 分组数据网关功能和移动管理实体功能, 所述家庭基站网关连接一个或多个家庭基站;
所述家庭基站网关与归属用户服务器 HSS之间执行位置更新并获取用 户数据之后, 所述家庭基站网关内嵌的移动管理实体功能和服务网关功能 之间完成创建会话过程, 并且分组数据网关功能为终端分配 IP地址;
所述接入网网元执行初始上下文建立过程, 并完成与终端之间的 RRC 链接重配过程具体包括:
所述家庭基站网关向所述家庭基站发起携带为用户分配的服务质量 QoS的初始上下文建立请求,所述家庭基站向终端发起 RRC链接重配过程, 和终端协商相关的无线参数, 建立承载的空口资源, 终端完成承载建立之 后, 向所述家庭基站发送 RRC链接重配完成消息, 所述家庭基站向所述家 庭基站网关发送初始上下文建立响应。
进一步地, 所述接入网网元为家庭基站, 所述接入网网元执行初始上 下文建立过程, 并完成与终端之间的 RRC链接重配过程具体为:
所述家庭基站内嵌的移动管理实体功能和服务网关功能之间完成创建 会话过程, 并且分组数据网关功能为终端分配 IP地址;
所述家庭基站内部完成初始上下文建立过程后, 向终端发起 RRC链接 重配过程, 和终端协商相关的无线参数, 建立承载的空口资源, 终端完成 承载建立之后, 向所述家庭基站发送 RRC链接重配完成消息。
本发明通过在接入网网元中融合服务网关功能、 分组数据网关功能及 移动管理实体功能, 简化了 LTE家庭接入网络的系统架构, 减小了开销和 时延。 附图说明
图 1是现有 E-UTRAN基本系统架构图;
图 2是现有部署了家庭基站网关的 E-UTRAN系统架构;
图 3是现有支持 LIPA功能的家庭基站系统逻辑架构;
图 4是本发明实施例 1提供的部署了带 S-GW和 P-GW功能的家庭基 站网关的 E-UTRAN家庭接入网络架构图;
图 5是本发明实施例 1提供的部署了带 S-GW和 P-GW功能的家庭基 站网关的家庭接入网络系统逻辑架构图;
图 6是本发明实施例 1提供的部署了带 S-GW和 P-GW功能的家庭基 站网关的家庭接入网络系统的用户面协议栈 (空口)图;
图 7是本发明实施例 1提供的部署了带 S-GW和 P-GW功能的家庭基 站网关的家庭接入网络系统的控制面协议栈 (;空口)图; 图 8是本发明实施例 1提供的部署了带 S-GW和 P-GW功能的家庭基 站网关的家庭接入网络系统的用户面协议栈(S1-U接口协议) 图;
图 9是本发明实施例 1提供的部署了带 S-GW和 P-GW功能的家庭基 站网关的家庭接入网络系统的控制面协议栈(S1-MME接口 ) 图;
图 10是本发明实施例 1提供的部署了带 S-GW和 P-GW功能的家庭基 站网关的家庭接入网络系统的 UE附着流程图;
图 11是本发明实施例 2提供的部署了带 S-GW和 P-GW功能的家庭基 站的 E-UTRAN家庭接入网络架构图;
图 12是本发明实施例 2提供的部署了带 S-GW和 P-GW功能的家庭基 站的家庭接入网络系统逻辑架构图;
图 13是本发明实施例 2提供的部署了带 S-GW和 P-GW功能的家庭基 站的 E-UTRAN家庭接入网络的控制面协议栈 (空口)图;
图 14是本发明实施例 2提供的部署了带 S-GW和 P-GW功能的家庭基 站的 E-UTRAN家庭接入网络的控制面协议栈(S1-MME接口 ) 图;
图 15是本发明实施例 2提供的部署了带 S-GW和 P-GW功能的家庭基 站的家庭接入网络系统的 UE附着流程图;
图 16是本发明实施例 3提供的部署了带 MME、 S-GW和 P-GW功能 的家庭基站网关的 E-UTRAN家庭接入网络架构图;
图 17是本发明实施例 3提供的部署了带 MME、 S-GW和 P-GW功能 的家庭基站网关的家庭接入网络系统逻辑架构图;
图 18是本发明实施例 3提供的部署了带 MME、 S-GW和 P-GW功能 的家庭基站网关的 E-UTRAN家庭接入网络的控制面协议栈 (空口)图; 图 19是本发明实施例 3提供的部署了带 MME、 S-GW和 P-GW功能 的家庭基站网关的 E-UTRAN家庭接入网络的控制面协议栈(S1-MME接 口) 图; 图 20是本发明实施例 3提供的部署了带 MME、 S-GW和 P-GW功能 的家庭基站网关的家庭接入网络系统的 UE附着流程图;
图 21是本发明实施例 4提供的部署了带 MME、 S-GW和 P-GW功能 的家庭基站的 E-UTRAN家庭接入网络架构图;
图 22是本发明实施例 4提供的部署了带 MME、 S-GW和 P-GW功能 的家庭基站的家庭接入网络系统逻辑架构图;
图 23是本发明实施例 4提供的部署了带 MME、 S-GW和 P-GW功能 的家庭基站的家庭接入网络系统的控制面协议栈 (空口)图;
图 24是本发明实施例 4提供的部署了带 MME、 S-GW和 P-GW功能 的家庭基站的家庭接入网络系统的 UE附着流程图。 具体实施方式
无线局域网通信市场在突飞猛进的同时, 不同的针对无线局域网通信 的通信技术也在不断推出。 在这些通信技术中, 目前市场上最为普及的是 WIFI (也以 IEEE802.il通信技术, 或者 WLAN的名字为人所知)标准技 术, 例如 802.11a/b/g/n。 3GPP标准组织为了解决日益迫切的室内宽带接入 的市场需求, 也推出了以家庭基站(HNB或 HeNB ) 为关键特征的室内宽 带接入解决方案。 不同的标准组织虽然对于它们提出的解决方案命名上各 有不同, 但它们实质上是相近或者等同的, 例如 WIFI中的移动站(MS ) 与 3GPP定义的用户设备 ( UE )基本相当; WIFI中的局域网 (LAN )、 无 线局域网 ( WLAN )与 3GPP中的家庭基站系统( HNB/HeNB system )基本 相当, 按照 3GPP的命名习惯, 也可称之为家庭网络( home network )或家 庭接入网络( home access network ); WIFI中的接入点( AP )与 3GPP定义 的家庭基站( HNB或 HeNB )基本相当, WIFI中的接入控制节点 ( AC ) 与 3GPP定义的家庭基站网关基本相当。 3GPP中所说的家庭基站或者家庭 (接入) 网络或者家庭基站系统并非限制该系统只能用于家庭, 实际上其 使用场景与 WIFI的使用场景基本上重叠, 涵盖了从家庭、 企业到公共部署 在内的多种适用场景。 在本发明中, 所提及的家庭基站(HeNB )和家庭基 站网关(HeGW )是沿用了 3GPP的命名, 它们也可以被称为 LTE LAN AP 和 LTE LANAC, 或者其它具有相似功能划分但名称各异的网元。 同样, 在 本发明中家庭接入网络与 LTE LAN等同, 家庭基站管理系统(HeMS )也 可以是通用的网管系统( OAM )。
如背景技术所说, LTE的家庭基站系统架构远比 WLAN的架构复杂, 造成了信令多、 延迟大、 成本高、 部署不易等问题, 给 LTE的家庭基站的 部署和推广带来了很多困难。 为此, 本发明提出了一种新的 LTE家庭接入 网络系统架构 (或者说一种新的 LTE LAN系统架构), 能够有效减少系统 复杂度, 减少网元间的信令, 减小延迟, 有益于 LTE家庭基站系统的应用 和推广。
为使本发明的目的、 技术方案和优点更加清楚明白, 以下举实施例并 参照附图, 对本发明进一步详细说明。
实施例 1
为了减少 LTE网络架构的复杂度, 增加其灵活性, 一种有效的办法就 是将多个网元的功能进行融合, 并且将核心网的部分功能交由接入网来完 成。 核心网 EPC的功能主要包括用户的鉴权、 移动性管理、 数据和信令加 密等, 通过这些控制, 来实现对用户的管理和控制以及精确的计费操作。 具体的, 上述 EPC功能主要由 MME、 S-GW、 P-GW、 HSS等实体来实现, 现有技术中, 这些核心网网元的具体功能说明如下:
移动管理实体(MME ) 的功能包括:
( 1 )基于 NAS信令( signaling ) 的业务处理; ( 2 ) 为 NAS信令提供 安全性(加密及完整性保护 )保护; ( 3 ) Idle态 UE的可达性(包括控制和 执行寻呼传输); (4 )跟踪区域列表(Tracking Area list )管理; ( 5 )分组数 据网关和服务网关选择; (6)当切换需要变更 MME时, MME的选择; (7) 当切换到 2G或 3G网络时, GPRS服务支持节点 ( Servicing GPRS Support Node, SGSN) 的选择; (8)进行漫游管理; (9)对用户进行认证、 授权; ( 10 )承载管理功能包括专有承载建立; ( 11 )合法监听; ( 12 )传递告警 消息; (13) UE的可达性功能; (14) S1连接管理; (15)安全控制; (16) MME下的用户切换控制等。
服务网关(S-GW) 的功能包括:
( 1 )在基站间切换时,作为本地移动性锚点;(2)发送一个或多个 "结 束标志" ( "end marker")给源基站; (3)在跨制式( inter-RAT )切换时, 作为移动性锚点; (4) ECM-Idle态下, 下行包緩存和发起网络触发的业务 请求流程; (5)合法监听; (6) 包路由和转发; (7)上行 /下行传输层包标 记; (8) 为运营商间计费而记账; (9) 离线计费功能;
分组数据网关 (P-GW) 的功能包括以下功能之部分或全部:
( 1 )基于每用户的包过滤; ( 2 )合法监听; ( 3 )上行 /下行传输层包标 记; (4) 为运营商间计费而记账; (5)上下行业务层计费; (6) 离线计费 功能; (7)上下行业务层速率执行; (8)动态 IP地址分配(DHCP)功能; ( 9 )上下行承载绑定; ( 10 )上行承载绑定验证; ( 11 )每用户 /承载记账; HSS是存有用户签约信息的功能实体, 其逻辑功能包括:
( 1 )移动性管理; ( 2 )生成用户安全信息;( 3 ) 用户安全支持; ( 4 ) 呼叫 /会话建立支持; (5)标识处理; (6)接入授权; (7) 业务授权支持; (8)应用业务支持;
策略与计费规则功能 (Policy and Charging Rules Function, PCRF)作为 策略的决策点为业务数据流和 IP承载资源和策略计费提供控制; PCRF选 择并向策略及计费执行功能(Policy and Charging Enforcement Function, PCEF)提供适用的策略和计费决策; PCEF作为策略的执行点为 IP承载资源 的策略和计费提供控制。
现有技术中, 本发明主要涉及的网元之间的接口包括:
( 1 ) S1-MME接口为控制面协议接口 ( E-UTRAN和 MME之间;); ( 2 ) S1-U接口为 E-UTRAN和服务网关之间的接口, 主要用于用户面 隧道 ( user plane tunnelling )和切换时基站间的路径变换;
( 3 ) X2接口为基站间的接口, 用以支持基站间的切换和 /或信息传递 和 /或数据传输;
( 4 ) S6a接口用于使能在 MME和 HSS之间传递签约和认证数据, 以 执行认证 /授权用户接入到系统;
( 5 ) Gx接口提供从 PCRF到分组数据网关中的策略和计费执行功能
PCEF的 (服务质量)策略和计费规则传递;
( 6 )S10接口为 MME之间为了重安置 MME和 MME到 MME的信息 传递的接口;
( 7 ) SI 1接口为 MME与服务网关间的接口;
( 8 ) SGi接口为在分组数据网关 ( P-GW )和分组数据网络间的接口。 分组数据网络可以是运营商外部的公共或私有分组数据网络, 或者运营商 内部的分组数据网, 例如为提供 IP 多媒体业务(IP Multimedia Service, IMS )。
图 4为本发明实施例 1提供的部署了带(部分或全部)服务网关 S-GW 功能和(部分或全部 )分组数据网关 P-GW功能的家庭基站网关的家庭接 入网络系统架构图。
如图 4所示, LTE家庭接入网络 ( HAN, 或称为 LTE无线局或网 ) 由 家庭基站网关及其控制的一个或多个家庭基站组成。 家庭基站(HeNB )与 家庭基站网关( HeGW )之间支持 S 1接口,其中控制面支持 S 1 -C即 S 1 -MME 接口,用于交互控制面的信令,用户面支持 S1-U接口,用于交互业务数据。 家庭基站之间支持 X2接口, 其中控制面支持 X2-C接口, 用于交互控制面 信令, 用户面支持 X2-U接口, 用于传输用户数据。
图 5是本发明实施例 1提供的部署了带服务网关功能 S-GW和分组数 据网关 P-GW功能的家庭基站网关的 LTE家庭接入网络系统逻辑架构图。
如图 5所示, 家庭基站(HeNB )与家庭基站网关 (HeGW )之间支持 S1接口, 其中控制面支持 S1-C即 S1-MME接口, 用于交互控制面的信令, 用户面支持 S1-U接口, 用于交互业务数据。 家庭基站网关(由于其包括服 务网关功能)支持与核心网的移动管理实体(MME )网元的 S1-MME接口。 此外, 家庭基站网关 (由于其包括分组数据网关功能)可选支持与策略和 计费规则功能 PCRF之间的 Gx接口。有些接口在图中并未画出, 例如家庭 基站网关(由于其包括分组数据网关功能)可选支持与运营商 IP服务网元 之间的 SGi接口。
如图 5 所示, 家庭基站网关与家庭基站一样, 都位于企业网或者局域 网中, 家庭基站网关与核心网网元(例如移动管理实体, 策略和计费规则 功能)之间的连接需要通过安全网关 (SeGW ), 安全网关也为家庭基站网 关与核心网网元之间的连接提供安全保护。 另外, 家庭基站 /家庭基站网关 与家庭基站管理系统(HeMS )之间的连接也需要通过安全网关 (SeGW ), 安全网关也为家庭基站 /家庭基站网关与家庭基站管理系统之间的连接提供 安全保护。 家庭基站 /家庭基站网关与家庭基站管理系统之间的连接可能不 在 3GPP标准中定义, 因而在图中没有直接画出它们之间的接口。
本发明实施例 1提供的家庭基站网关由于嵌入了 S-GW和 P-GW(全部 或部分)功能, 因而 S-GW和 P-GW支持的接口, 本发明实施例 1提供的 家庭基站网关也可以 (全部或部分) 支持。
本发明实施例 1提供的家庭基站的功能包括以下功能的部分或者全部: ( 1 )无线资源管理( Radio Resource Management, RRM )功能。 无线 资源管理包括以下功能之部分或全部: 无线承载控制 (Radio Bearer Control ), 无线接入控制 (Radio Admission Control ), 连接移动性控制 ( Connection Mobility Control )、 上下行资源动态分配(即调度); ( 2 )对用 户数据执行 IP头压缩及加密; (3)发现 /选择合适的家庭基站网关; (4)将 用户面数据路由到家庭基站网关; (5)调度和传输寻呼信息 (来自家庭基 站网关); (6)调度和传输广播信息(来自家庭基站网关或家庭基站管理系 统); (7)针对移动性和调度的测量和上报的配置; (8)封闭用户组(Closed Subscriber Group, CSG )处理; (9) 支持自组织网络的功能, 例如自安装 ( self-installation )、 自配置( self-configuration ); ( 10 )与家庭基站管理系统 建立连接, 获取和 /或更新系统参数;
本发明实施例 1 提供的家庭基站网关的功能包括以下功能之部分或全 部:
( 1 ) 中继 S1信令; (2) 支持本地 IP接入(LIPA)功能(UE可通过 家庭基站网关与互联网直接交互数据, 而不必经由运营商的核心网进行路 由); (3)合法监听; (4)在基站间切换时, 作为本地移动性锚点; (5)发 送一个或多个 "结束标志" ( "end marker" )给源基站; (6) Idle态下下行 包緩存和发起网络触发的业务请求流程; (7) 包路由和转发; (8)上行/下 行传输层包标记; (9)为运营商间计费而记账; (10) 离线计费功能; (11 ) 上下行业务层计费; ( 12 )上下行业务层速率执行; (13)动态 IP地址分配 ( DHCP ) 功能; ( 14 )上下行承载绑定; ( 15 )上行承载绑定验证; ( 16 ) 每用户 /承载记账;
根据本发明实施例 1 提供的家庭接入网络系统架构, 相关的协议栈如 下:
图 6是本发明实施例 1提供的用户面协议栈 (空口)示意图, 其中 PDCP 是分组数据汇聚协议 ( Packet Data Convergence Protocol, PDCP ), RLC是 无线链路控制协议(Radio Link Control, RLC ), MAC是媒介接入控制协议 ( Medium Access Control, MAC), PHY是物理层(physical )协议。
图 7是本发明实施例 1提供的控制面协议栈 (空口)示意图, 其中 NAS 是非接入层 ( Non-Access Stratum, NAS )协议, RRC是无线资源控制协议 ( Radio Resource Control , RRC )。
图 8是本发明实施例 1提供的用户面协议栈(S1-U接口)示意图: 其 中 GTP是 GPRS Tunnelling Protocol (GTP)协议, UDP是 User Datagram Protocol协议, L2和 L2分别代表层 2和层 1的协议。
图 9是本发明实施例 1提供的控制面协议栈 ( S1-MME接口)示意图: 其中 S1-AP是 S1应用层协议(SI Application Protocol, Sl-AP ), SCTP是 流控制传输协议 ( Stream Control Transmission Protocol, SCTP )。 图 10是本发明实施例 1提供的 UE入网的流程示意图,包括以下步驟: 步驟 1001 , UE通过 HeNB发送 NAS消息 "附着请求" 给 MME; 其 中 NAS消息可以包含在 RRC信令中, HeNB不解读 UE的 NAS消息; 步驟 1002 , HeNB透传该 NAS消息给 HeGW,再由 HeGW透传给 MME; 步驟 1003 , MME对该 UE进行 NAS鉴权和安全性检测;
步驟 1004, MME向 HSS发起位置更新请求, 获取用户数据; 步驟 1005 , HSS返回 MME位置更新响应, 其中带有用户签约数据; 步驟 1006, MME向 HeGW (因其带 S-GW功能 )发起创建会话请求; 步驟 1007, HeGW分配用户 IP地址(因其带 P-GW功能;), 确定承载 QoS, 之后, 返回 MME创建会话响应。
步驟 1008, MME向 HeGW发起初始上下文建立请求, 带有 HeGW (的 S-GW功能)所确定的承载 QoS; HeGW转发给 HeNB。
步驟 1009, HeNB向 UE发起 RRC链接重配过程, 和 UE协商相关的 无线参数, 建立承载的空口资源。 步驟 1010, UE完成承载建立之后, 返给 HeNB RRC链接重配完成。 步驟 1011 , HeNB返给 MME初始上下文建立响应, 该消息经 HeGW 中继转发。
步驟 1012, UE发送 "直接传递" 消息给 HeNB,其中包括 "附着完成" 消息;
步驟 1013 , HeNB向 MME发送 "附着完成" 消息, 该消息经 HeGW 透传; (在收到附着接受消息并获得 IP地址后, UE就可以向 HeNB发送上 行数据了,所发的上行数据经 HeNB再转给 HeGW )
步驟 1014, MME向 HeGW (的 S-GW功能模块 )发起修改(更新 ) 承载请求, 将 HeNB的 SI用户面信息发送给 HeGW (的 S-GW功能模块); 步驟 1015 , HeGW (的 S-GW功能模块 )返回修改(更新 )承载响应。
( HeGW可开始发送緩存的下行数据; ) 实施例 2
图 11 是部署了带 (部分或全部)服务网关功能和 (部分或全部)分组数据 网关功能的家庭基站的家庭接入网络系统架构图。
如图 11所示, LTE家庭接入网络(HAN, 或称为 LTE无线局域网 )由 家庭基站(或称接入点)组成。 家庭基站之间支持 X2接口, 其中控制面支 持 X2-C接口, 用于交互控制面信令, 用户面支持 X2-U接口, 用于传输用 户数据。
图 12是部署了带服务网关功能和分组数据网关功能的家庭基站的 LTE 家庭接入网络系统逻辑架构图。
如图 12所示, 家庭基站支持与核心网的移动管理实体的 S1接口, 家 庭基站 (由于其包括服务网关功能) 支持与核心网的移动管理实体的 S11 接口, 家庭基站 (由于其包括分组数据网关功能)可选支持与策略和计费 规则功能 PCRF之间的 Gx接口。 此外, 有些接口在图中并未画出, 这些接 口可能有, 家庭基站网关 (由于其包括分组数据网关功能) 可选支持与运 营商 IP服务网元之间的 SGi接口。
如图 12所示, 家庭基站位于企业网或者局域网中, 家庭基站与核心网 网元(例如移动管理实体, 归属用户服务器, 策略和计费规则功能)之间 的连接需要通过安全网关 (SeGW ), 安全网关也为家庭基站与核心网网元 之间的连接提供安全保护。 另外, 家庭基站与家庭基站管理系统(HeMS ) 之间的连接也需要通过安全网关 (SeGW ), 安全网关也为家庭基站与家庭 基站管理系统之间的连接提供安全保护。 家庭基站与家庭基站管理系统之 间的连接可能不在 3GPP标准中定义,因而在图中没有直接画出它们之间的 接口。
家庭基站的功能包括以下功能的部分或者全部:
( 1 )无线资源管理 RRM功能。 无线资源管理包括以下功能之部分或 全部: 无线承载控制、 无线接入控制、 连接移动性控制、 上下行资源动态 分配(即调度); (2 )对用户数据执行 IP头压缩及加密; (3 )调度和传输广 播信息(来自移动管理实体或家庭基站管理系统); ( 4 )针对移动性和调度 的 测量和上报的配置; (5 )封闭用户组 CSG处理; (6 ) 支持自组织网络 的功能, 例如自安装( self-installation ), 自配置( self-configuration ); ( 7 ) 支持本地 IP接入(LIPA )功能(UE可通过家庭基站与互联网直接交互数 据, 而不必经由运营商的核心网进行路由); (8 )合法监听; (9 ) 包路由和 转发; (10 )上行 /下行传输层包标记; (11 ) 为运营商间计费而记账; (12 ) 离线计费功能; ( 13 )上下行业务层计费; ( 14 )上下行业务层速率执行; ( 15 ) 动态 IP地址分配(DHCP )功能; ( 16 )上下行承载绑定; ( 17 )上行承载 绑定验证; ( 18 )每用户 /承载记账;
本实施例中 MME、 HSS、 PCRF及其它相关接口的定义参考实施例 1 ,
Figure imgf000020_0001
根据本实施例的家庭接入网络系统架构, 相关的协议栈如下: 本实施例的用户面协议栈 (空口)图与实施例 1相同 (即图 6 ), 在此不 再重复。 图 13是控制面协议栈 (空口),从图中可以看出, NAS信令在 MME 终结。 由于 HeNB集成了 S-GW/P-GW功能, 因而不存在 S1接口的用户面 协议栈。 图 14是控制面协议栈(S1-MME接口)。
图 15是根据本实施例的 UE附着流程图。如图 15所示,包括以下步驟: 步驟 1501 , UE通过 HeNB发送 NAS消息 "附着请求" 给 MME; 其 中 NAS消息可以包含在 RRC信令中, HeNB不解读 UE的 NAS消息; 步驟 1502 , HeNB透传该 NAS消息给 MME;
步驟 1503 , MME对该 UE进行 NAS鉴权和安全性检测;
步驟 1504 , MME向 HSS发起位置更新请求, 获取用户数据; 步驟 1505 , HSS返回 MME位置更新响应, 其中带有用户签约数据; 步驟 1506, MME向 HeNB (因其带 S-GW功能 )发起创建会话请求; 步驟 1507, HeNB分配用户 IP地址(因其带 P-GW功能;), 确定承载
QoS, 之后, 返回 MME创建会话响应。
步驟 1508, MME向 HeNB发起初始上下文建立请求, 带有 HeNB (的
S-GW功能)所确定的承载 QoS;
步驟 1509, HeNB向 UE发起 RRC链接重配过程, 和 UE协商相关的 无线参数, 建立承载的空口资源。
步驟 1510, UE完成承载建立之后, 返给 HeNB RRC链接重配完成。 步驟 1511 , HeNB返给 MME初始上下文建立响应。
步驟 1512, UE发送 "直接传递" 消息给 HeNB,其中包括 "附着完成" 消息;
步驟 1513 , HeNB向 MME发送 "附着完成" 消息; (在收到附着接受 消息并获得 IP地址后, UE就可以向 HeNB发送上行数据了,所发的上行数 据经 HeNB到互联网;)
步驟 1514, MME向 HeNB (的 S-GW功能模块 )发起修改(更新 )承 载请求, 将 HeNB的 S1用户面信息发送给 HeNB (的 S-GW功能模块); 步驟 1515, HeNB (的 S-GW功能模块 )返回修改(更新 )承载响应。 ( HeNB可开始发送緩存的下行数据; ) 实施例 3
为了减少 LTE网络架构的复杂度, 增加其灵活性, 一种有效的办法就 是将多个网元的功能进行融合, 并且将核心网的部分功能交由接入网来完 成。 图 16是部署了带移动管理实体功能、 服务网关功能和分组数据网关功 能的家庭基站网关的家庭接入网络系统架构图。
如图 16所示, LTE家庭接入网络 ( HAN, 或称为 LTE无线局域网 ) 由家庭基站网关及其控制的一个或多个家庭基站组成。 家庭基站(HeNB ) 与家庭基站网关 (HeGW )之间支持 S1 接口, 其中控制面支持 S1-C 即 S1-MME接口, 用于交互控制面的信令, 用户面支持 S1-U接口, 用于交互 业务数据。 家庭基站之间支持 X2接口, 其中控制面支持 X2-C接口, 用于 交互控制面信令, 用户面支持 X2-U接口, 用于传输用户数据。
图 17是部署了带移动管理实体功能、 服务网关功能和分组数据网关功 能的家庭基站网关的 LTE家庭接入网络系统逻辑架构图。
如图 17所示, 家庭基站(HeNB )与家庭基站网关(HeGW )之间支持 S1接口, 其中控制面支持 S1-C即 S1-MME接口, 用于交互控制面的信令, 用户面支持 S1-U接口, 用于交互业务数据。 家庭基站网关(由于其包括移 动管理实体功能) 支持与核心网的归属用户服务器 HSS网元的 S6a接口, 家庭基站网关 (由于其包括分组数据网关功能)可选支持与策略和计费规 则功能 PCRF之间的 Gx接口。 此外, 有些接口在图中并未画出, 这些接口 可能有, 家庭基站网关 (由于其包括分组数据网关功能)可选支持与运营 商 IP服务网元之间的 SGi接口。
如图 17所示, 家庭基站网关与家庭基站一样, 都位于企业网或者局域 网中, 家庭基站网关与核心网网元(例如归属用户服务器, 策略和计费规 则功能)之间的连接需要通过安全网关 (SeGW ), 安全网关也为家庭基站 网关与核心网网元之间的连接提供安全保护。 另外, 家庭基站 /家庭基站网 关与家庭基站管理系统( HeMS )之间的连接也需要通过安全网关( SeGW ), 安全网关也为家庭基站 /家庭基站网关与家庭基站管理系统之间的连接提供 安全保护。 家庭基站 /家庭基站网关与家庭基站管理系统之间的连接可能不 在 3GPP标准中定义, 因而在图中没有直接画出它们之间的接口。
家庭基站的功能包括以下功能的部分或者全部:
( 1 )无线资源管理 RRM功能。 无线资源管理包括以下功能之部分或 全部: 无线承载控制、 无线接入控制、 连接移动性控制、 上下行资源动态 分配(即调度); ( 2 )对用户数据执行 IP头压缩及加密; ( 3 )发现 /选择合 适的家庭基站网关; (4 )将用户面数据路由到家庭基站网关; (5 )调度和 传输寻呼信息(来自家庭基站网关); ( 6 )调度和传输广播信息(来自家庭 基站网关或家庭基站管理系统); (7 )针对移动性和调度的 测量和上报的 配置; (8 )封闭用户组 CSG处理; (9 ) 支持自组织网络的功能, 例如自安 装( self-installation )、 自配置( self-configuration ); ( 10 )与家庭基站管理系 统建立连接, 获取和 /或更新系统参数。
家庭基站网关的功能包括以下功能之部分或全部 (其中一部分功能源自 家庭基站网关嵌入的 MME/S-GW/P-GW的部分功能和接口):
( 1 )终结 S1流程 /接口; (2 )封闭用户组(CSG )的接入控制(access control ) ; ( 3 ) 对混合式小区 ( hybrid cell ) 的成员验证 ( membership verification ); ( 4 ) 支持本地 IP接入 ( LIPA ) 功能(UE可通过家庭基站网 关与互联网直接交互数据, 而不必经由运营商的核心网进行路由); (5 )终 结 NAS信令; ( 6 ) SI连接管理; ( 7 )安全控制; ( 8 ) Idle态的移动性管理; ( 9 ) NAS信令( signaling ); ( 10) NAS信令的安全性(加密及完整性保护); (11) Idle态 UE的可达性(包括控制和执行寻呼传输;); (12)漫游; ( 13 ) 认证; ( 14 )授权; ( 15 )承载管理功能包括专有承载建立; ( 16 )合法监听; (17)传递告警消息; (18) UE的可达性功能; (19) 家庭基站网关下的用 户切换控制; (20)在基站间切换时, 作为本地移动性锚点; (21)发送一 个或多个 "结束标志" ( "end marker")给源基站; (22) Idle态下 下行包 緩存和发起网络触发的业务请求流程; (23) 包路由和转发; (24)上行/下 行传输层包标记; (25)为运营商间计费而记账; (26)离线计费功能; (27) 上下行业务层计费; ( 28 )上下行业务层速率执行; (29)动态 IP地址分配 (DHCP) 功能; (30)上下行承载绑定; (31)上行承载绑定验证; (32) 每用户 /承载记账;
根据本实施例的家庭接入网络系统架构, 相关的协议栈如下。 用户面 协议栈 (空口)与实施例 1 (即图 6)相同, 图 18是控制面协议栈 (空口)图, 如图所示, NAS信令在 HeGW终结。 用户面协议栈( S1-U接口协议)与 实施例 1 (即图 8)相同。 图 19是控制面协议栈(S1-MME接口) 图。
图 20是根据本实施例的 UE附着流程图。如图 20所示,包括以下步驟: 步驟 2001, UE通过 HeNB发送 NAS消息 "附着请求"给 HeGW (因其 带 MME功能); 其中 NAS消息可以包含在 RRC信令中, HeNB不解读 UE 的 NAS消息;
步驟 2002 , HeNB透传该 NAS消息给 HeGW;
步驟 2003, HeGW (因其带 MME功能)对该 UE进行 NAS鉴权和安全 性检测;
步驟 2004, HeGW (因其带 MME功能)向 HSS发起位置更新请求, 获 取用户数据; 步驟 2005 , HSS返给 HeGW位置更新响应, 其中带有用户签约数据; 步驟 2006, HeGW向 HeNB发起初始上下文建立请求,带有 HeGW (的 S-GW功能)所确定的承载 QoS; (在此之前, 创建会话过程在 HeGW内嵌 的 MME功能和 S-GW功能之间完成,并且 HeGW内嵌的 P-GW功能为 UE 分配 IP地址;);
步驟 2007, HeNB向 UE发起 RRC链接重配过程, 和 UE协商相关的 无线参数, 建立承载的空口资源。
步驟 2008, UE完成承载建立之后, 返给 HeNB RRC链接重配完成。 步驟 2009 , HeNB返给 HeGW初始上下文建立响应。
步驟 2010, UE发送 "直接传递" 消息给 HeNB,其中包括 "附着完成" 消息;
步驟 2011 , HeNB向 HeGW发送 "附着完成" 消息; (在收到附着接受 消息并获得 IP地址后, UE就可以向 HeNB发送上行数据了,所发的上行数 据经 HeNB到 HeGW再由 HeGW发到互联网; HeGW内嵌的 MME功能与 S-GW功能间完成承载修改过程,然后 HeGW可开始发送緩存的下行数据; ) 实施例 4
为了减少 LTE网络架构的复杂度, 增加其灵活性, 一种有效的办法就 是将多个网元的功能进行融合, 并且将核心网的部分功能交由接入网来完 成。 图 21是部署了带移动管理实体功能、 服务网关功能和分组数据网关功 能的家庭基站的家庭接入网络系统架构图。
如图 21所示, LTE家庭接入网络(HAN, 或称为 LTE无线局域网 ) 由家庭基站(或称接入点)组成。 家庭基站之间支持 X2接口, 其中控制面 支持 X2-C接口, 用于交互控制面信令, 用户面支持 X2-U接口, 用于传输 用户数据。
图 22是部署了带移动管理实体功能、 服务网关功能和分组数据网关功 能的家庭基站的 LTE家庭接入网络系统逻辑架构图。
如图 22所示, 家庭基站(由于其包括移动管理实体功能)支持与核心 网的归属用户服务器 HSS网元的 S6a接口, 家庭基站(由于其包括分组数 据网关功能)可选支持与策略和计费规则功能 PCRF之间的 Gx接口。此外, 有些接口在图中并未画出, 这些接口可能有, 家庭基站网关 (由于其包括 分组数据网关功能)可选支持与运营商 IP服务网元之间的 SGi接口。
如图 22所示, 家庭基站位于企业网或者局域网中, 家庭基站与核心网 网元(例如移动管理实体, 归属用户服务器, 策略和计费规则功能)之间 的连接需要通过安全网关 (SeGW ), 安全网关也为家庭基站与核心网网元 之间的连接提供安全保护。 另外, 家庭基站与家庭基站管理系统(HeMS ) 之间的连接也需要通过安全网关 (SeGW ), 安全网关也为家庭基站与家庭 基站管理系统之间的连接提供安全保护。 家庭基站与家庭基站管理系统之 间的连接可能不在 3GPP标准中定义,因而在图中没有直接画出它们之间的 接口。
家庭基站的功能包括以下功能的部分或者全部:
( 1 )无线资源管理 RRM功能。 无线资源管理包括以下功能之部分或 全部: 无线承载控制、 无线接入控制、 连接移动性控制、 上下行资源动态 分配(即调度); (2 )对用户数据执行 IP头压缩及加密; (3 )调度和传输广 播信息(来自家庭基站或家庭基站管理系统);(4 )针对移动性和调度的 测 量和上报的配置; (5 )封闭用户组 CSG处理; (6 )支持自组织网络的功能, 例如自安装 ( self-installation ), 自配置(self-configuration ); ( 7 )与家庭基 站管理系统建立连接, 获取和 /或更新系统参数; (8 )封闭用户组 (CSG ) 的接入控制 ( access control ); ( 9 )对混合式小区 ( hybrid cell ) 的成员验证 ( membership verification ); ( 10 ) 支持本地 IP接入( LIPA )功能( UE可 通过家庭基站与互联网直接交互数据, 而不必经由运营商的核心网进行路 由); ( 11 )终结 NAS信令; ( 12 )安全控制; ( 13 ) NAS信令( signaling ); ( 14 )NAS信令的安全性(加密及完整性保护);( 15 )当切换需要变更 MME 时(即从家庭基站变更到移动管理实体时), MME的选择; ( 16 )漫游;( 17 ) 认证; ( 18 )授权; ( 19 )承载管理功能包括专有承载建立; ( 20 )合法监听; ( 21 ) 包路由和转发; (22 )上行 /下行传输层包标记; (23 ) 为运营商间计 费而记账; (24 ) 离线计费功能; (25 )上下行业务层计费; (26 )上下行业 务层速率执行; (27 )动态 IP地址分配(DHCP ) 功能; (28 )上下行承载 绑定; (29 )上行承载绑定验证; (30 )每用户 /承载记账;
本实施例中 HSS、 PCRF及其它相关接口的定义参考实施例 1 , 在此不 再赘述。
根据本实施例的家庭接入网络系统架构, 相关的协议栈如下。 本实施 例的用户面协议栈 (空口)与实施例 1(即图 6 )相同;图 23是控制面协议栈 (空 口)图, 如图所示, NAS信令被 HeNB (因其集成了 MME的功能)终结。
图 24是根据本实施例的 UE附着流程图。如图 24所示,包括以下步驟: 步驟 2401 , UE发送 "附着请求" 给 HeNB (因其带 MME功能); 其中
NAS消息可以包含在 RRC信令中;
步驟 MO2, HeNB (因其带 MME功能)对该 UE进行 NAS鉴权和安全性 检测;
步驟 2403 , HeNB (因其带 MME功能)向 HSS发起位置更新请求, 获取 用户数据;
步驟 2404, HSS返给 HeNB位置更新响应, 其中带有用户签约数据; 步驟 2405 , HeNB向 UE发起 RRC链接重配过程, 和 UE协商相关的 无线参数, 建立承载的空口资源。 (在此之前, 创建会话过程在 HeNB内嵌 的 MME功能和 S-GW功能之间完成,并且 HeNB内嵌的 P-GW功能为 UE 分配 IP地址;); 步驟 2406, UE完成承载建立之后,返给 HeNB RRC链接重配完成。(初 始上下文建立在 HeNB内部完成)
步驟 2407, UE发送 "直接传递" 消息给 HeNB,其中包括 "附着完成" 消息; (在收到附着接受消息并获得 IP地址后, UE就可以向 HeNB发送上 行数据了,所发的上行数据经 HeNB发到互联网; HeNB内嵌的 MME功能 与 S-GW功能间完成承载修改过程, 然后 HeNB可开始发送緩存的下行数 据; )
补充说明, 在本发明中的用户面 (空口 )和控制面 (空口 ) 的层 2 的 协议栈可以与实施例中的实例不同,在实例中层 2的协议栈包括 PDCP,RLC, 和 MAC协议, 本发明不受层 2的协议栈的限制, 即适用于层 2的协议栈为 任何协议的情况, 例如仅有一个 MAC协议的情况(该 MAC协议可能综合 了原先 RLC协议和 /或 PDCP协议的全部或部分功能)。
以上所述仅为本发明的较佳实施例而已, 并不用以限制本发明。 工业实用性
本发明通过在接入网网元中融合服务网关功能、 分组数据网关功能及 移动管理实体功能, 简化了 LTE家庭接入网络的系统架构, 减小了开销和 时延。

Claims

权利要求书
1、 一种接入网网元, 所述接入网网元中包括:
服务网关功能模块, 用于将服务网关功能融合到所述接入网网元中; 分组数据网关功能模块, 用于将分组数据网关功能融合到所述接入网 网元中。
2、 根据权利要求 1所述的接入网网元, 其中, 所述分组数据网关功能 包括与互联网交互数据功能, 用户终端通过所述接入网网元与互联网交互 数据。
3、 根据权利要求 1所述的接入网网元, 其中, 所述服务网关功能模块 至少用于执行以下功能之一:
切换时作为移动性锚点;
下行包緩存和发起网络触发的业务请求流程;
包路由和转发。
4、 根据权利要求 1所述的接入网网元, 其中, 所述分组数据网关功能 包含支持与策略和计费规则功能 PCRF之间的 Gx接口,所述接入网网元与 所述策略和计费规则功能 PCRF之间通过所述 Gx接口进行策略和计费规则 信息的交互。
5、根据权利要求 1所述的接入网网元, 其中, 所述接入网网元还包括: 移动管理实体功能模块, 用于将移动管理实体功能融合到所述接入网 网元中。
6、 根据权利要求 5所述的接入网网元, 其中, 所述移动管理实体功能 包括终结非接入层 NAS信令功能, 所述接入网网元终结非接入层 NAS信 令。
7、 根据权利要求 5所述的接入网网元, 其中, 所述移动管理实体功能 包括支持与归属用户服务器 HSS之间的 S6a接口功能, 所述接入网网元与 HSS之间通过 S6a接口进行签约信息的交互。
8、 根据权利要求 1-7任一项所述的接入网网元, 其中, 所述接入网网 元与核心网之间的连接通过安全网关, 所述安全网关为所述接入网网元与 核心网之间的连接提供安全保护。
9、 根据权利要求 1-7任一项所述的接入网网元, 其中, 所述接入网网 元在安装和 /或配置过程中从管理系统接收安装信息和 /或配置信息。
10、根据权利要求 1-7任一项所述的接入网网元, 其中, 所述接入网网 元为家庭基站网关, 所述家庭基站网关连接一个或多个家庭基站, 所述服 务网关功能包括支持与家庭基站间的 S1接口, 所述家庭基站网关与家庭基 站之间通过 S 1接口交互。
11、 根据权利要求 1-7任一项所述的接入网网元, 其中, 所述接入网网 元为家庭基站。
12、 一种接入网络系统, 该接入网络系统包括:
家庭基站, 用于为用户终端提供无线资源, 通过 S1接口与家庭基站网 关相连; 所述家庭基站还支持 X2接口, 用于家庭基站之间的交互;
家庭基站网关, 用于连接一个或多个家庭基站, 所述家庭基站网关融 合服务网关功能和分组数据网关功能, 其中所述分组数据网关功能包括与 互联网交互数据功能, 所述服务网关功能包括支持切换时作为移动性锚点。
13、 根据权利要求 12所述的接入网络系统, 其中,
所述家庭基站网关还融合移动管理实体功能, 所述移动管理实体功能 包括终结非接入层 NAS信令功能和包括支持与归属用户服务器 HSS之间的 S6a接口功能。
14、 根据权利要求 12所述的接入网络系统, 其中,
所述分组数据网关功能包括支持与策略和计费规则功能 PCRF之间的 Gx接口, 所述家庭基站网关与所述策略和计费规则功能 PCRF之间通过所 述 Gx接口进行策略和计费规则信息的交互。
15、 根据权利要求 12所述的接入网络系统, 其中,
所述家庭基站网关与核心网之间的连接通过安全网关, 所述安全网关 为所述家庭基站网关与核心网之间的连接提供安全保护。
16、 一种接入网络系统, 该接入网络系统包括:
家庭基站, 该家庭基站除用于为用户终端提供无线资源外, 该家庭基 站还融合了服务网关功能和分组数据网关功能, 其中所述分组数据网关功 能包括与互联网交互数据功能; 所述服务网关功能包括支持切换时作为移 动性锚点; 所述家庭基站还支持 X2接口, 用于家庭基站之间的交互。
17、 根据权利要求 16所述的接入网络系统, 其中,
所述家庭基站还融合移动管理实体功能, 所述移动管理实体功能包括 终结非接入层 NAS信令功能和包括支持与归属用户服务器 HSS之间的 S6a 接口功能。
18、 根据权利要求 16所述的接入网络系统, 其中,
所述分组数据网关功能包括支持与策略和计费规则功能 PCRF之间的 Gx接口,所述家庭基站与所述策略和计费规则功能 PCRF之间通过所述 Gx 接口进行策略和计费规则信息的交互。
19、 根据权利要求 16所述的接入网络系统, 其中,
所述家庭基站与核心网之间的连接通过安全网关, 所述安全网关为所 述家庭基站与核心网之间的连接提供安全保护。
20、 一种接入方法, 其中, 该方法应用于融合服务网关功能和分组数 据网关功能的接入网网元, 该方法包括:
接入网网元接收到终端的附着请求后透传该消息给移动管理实体 MME, 然后 UE、 移动管理实体 MME以及归属用户服务器 HSS交互完成 针对终端的鉴权及位置更新流程;
所述接入网网元与核心网的移动管理实体 MME之间进行交互,完成由 核心网的移动管理实体 MME发起的创建会话过程;
所述接入网网元与核心网的移动管理实体 MME之间进行交互,完成由 核心网的移动管理实体 MME发起的初始上下文建立过程,并完成与终端之 间的 RRC链接重配过程;
在完成附着流程后, 接入网网元与 MME间执行修改承载过程。
21、根据权利要求 20所述的方法, 其中, 所述接入网网元为家庭基站; 所述创建会话过程具体为:
核心网的移动管理实体 MME向所述家庭基站发送创建会话请求,所述 家庭基站为用户分配 IP地址、 确定承载服务质量 QoS, 然后向核心网的移 动管理实体 MME发送创建会话响应;
所述修改承载过程具体为:
核心网的移动管理实体 MME向所述家庭基站发送修改承载请求,将所 述家庭基站的 S1用户面信息发送给所述家庭基站; 所述家庭基站返回修改 承载响应给核心网的移动管理实体 MME。
22、 根据权利要求 20所述的方法, 其中, 所述接入网网元包括家庭基 站和家庭基站网关, 所述家庭基站网关融合了服务网关功能和分组数据网 关功能, 所述家庭基站网关连接一个或多个家庭基站;
所述创建会话过程具体为:
核心网的移动管理实体 MME向所述家庭基站网关发送创建会话请求, 所述家庭基站网关为用户分配 IP地址、 确定承载服务质量 QoS, 然后向核 心网的移动管理实体 MME发送创建会话响应;
所述修改承载过程具体为:
核心网的移动管理实体 MME向所述家庭基站网关发送修改承载请求, 将所述家庭基站的 SI用户面信息发送给所述家庭基站网关; 所述家庭基站 网关返回修改承载响应给核心网的移动管理实体 MME。
23、 一种接入方法, 其中, 该方法应用于融合服务网关功能、 分组数 据网关功能和移动管理实体功能的接入网网元, 该方法包括:
接入网网元接收到终端发送的包含附着请求的 NAS消息后, 对终端进 行 NAS鉴权;
所述接入网网元与归属用户服务器 HSS之间执行位置更新, 并获取用 户数据;
所述接入网网元执行初始上下文建立过程, 并完成与终端之间的 RRC 链接重配过程;
所述接入网网元接收终端通过直接传递消息发送的附着完成消息后, 所述接入网网元执行承载修改过程。
24、 根据权利要求 23所述的方法, 其中, 所述接入网网元包括家庭基 站和家庭基站网关, 所述家庭基站网关融合了服务网关功能、 分组数据网 关功能和移动管理实体功能, 所述家庭基站网关连接一个或多个家庭基站; 所述家庭基站网关与归属用户服务器 HSS之间执行位置更新并获取用 户数据之后, 所述家庭基站网关内嵌的移动管理实体功能和服务网关功能 之间完成创建会话过程, 并且分组数据网关功能为终端分配 IP地址;
所述接入网网元执行初始上下文建立过程, 并完成与终端之间的 RRC 链接重配过程具体包括:
所述家庭基站网关向所述家庭基站发起携带为用户分配的服务质量 QoS的初始上下文建立请求,所述家庭基站向终端发起 RRC链接重配过程, 和终端协商相关的无线参数, 建立承载的空口资源, 终端完成承载建立之 后, 向所述家庭基站发送 RRC链接重配完成消息, 所述家庭基站向所述家 庭基站网关发送初始上下文建立响应。
25、根据权利要求 23所述的方法,其中, 所述接入网网元为家庭基站, 所述接入网网元执行初始上下文建立过程, 并完成与终端之间的 RRC链接 重配过程具体为:
所述家庭基站内嵌的移动管理实体功能和服务网关功能之间完成创建 会话过程, 并且分组数据网关功能为终端分配 IP地址;
所述家庭基站内部完成初始上下文建立过程后, 向终端发起 RRC链接 重配过程, 和终端协商相关的无线参数, 建立承载的空口资源, 终端完成 承载建立之后, 向所述家庭基站发送 RRC链接重配完成消息。
PCT/CN2011/083073 2011-03-28 2011-11-28 接入网网元、接入网络系统及接入方法 WO2012129923A1 (zh)

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