WO2014169687A1 - 一种传输层地址的通知方法及系统 - Google Patents

一种传输层地址的通知方法及系统 Download PDF

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Publication number
WO2014169687A1
WO2014169687A1 PCT/CN2013/090868 CN2013090868W WO2014169687A1 WO 2014169687 A1 WO2014169687 A1 WO 2014169687A1 CN 2013090868 W CN2013090868 W CN 2013090868W WO 2014169687 A1 WO2014169687 A1 WO 2014169687A1
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WO
WIPO (PCT)
Prior art keywords
base station
information
gateway
mme
transport layer
Prior art date
Application number
PCT/CN2013/090868
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English (en)
French (fr)
Inventor
黄莹
吴蕴璐
高音
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN201310131439.3A external-priority patent/CN103582173A/zh
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP13882498.2A priority Critical patent/EP2975816A4/en
Priority to US14/784,955 priority patent/US9756670B2/en
Priority to JP2016507978A priority patent/JP2016519522A/ja
Publication of WO2014169687A1 publication Critical patent/WO2014169687A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/12Setup of transport tunnels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/02Arrangements for optimising operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16Gateway arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W92/00Interfaces specially adapted for wireless communication networks
    • H04W92/16Interfaces between hierarchically similar devices
    • H04W92/20Interfaces between hierarchically similar devices between access points

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method and system for notifying a transport layer address.
  • the home base station is a small, low-power base station that is mainly used in small indoor areas such as homes and offices.
  • the home base station is connected to the mobile operator core network by means of indoor cable, DSL (Digital Subscriber Loop) or fiber-optic connection, and provides a specific user with access service based on the wireless mobile communication network.
  • DSL Digital Subscriber Loop
  • It is an effective complement to existing network deployments and can effectively improve indoor voice and high-speed data service coverage. It has many advantages, such as low cost, low power, simple access, plug and play, saving backhaul, easy compatibility with existing terminals, and improved network coverage.
  • HeNB home eNB
  • the functions supported by the HeNB are basically the same as those of the eNB.
  • the process between the HeNB and the EPC (Evolved Packet Core) and the process between the eNB and the EPC are basically the same.
  • HeNB GW Home eNB Gateway, HeNB gateway
  • MME Mobility Management Entity
  • the X2 direct interface between the HeNBs (ie, an X2 interface that is not established by other nodes (such as proxy nodes)), which can be used for load balancing, handover optimization, information interaction, etc., while the macro base station eNB and the home base station
  • the X2 interface is not supported between HeNBs.
  • X2 Gateway referred to as X2 GW
  • the X2 GW is similar to the HeNB GW. It is an optional deployment.
  • the X2 GW can pass between the eNB and the HeNB, and between the HeNB and the HeNB.
  • FIG. 1 is a schematic diagram of a home base station network architecture in the case of an X2 gateway deployment.
  • the HeNB can connect to the MME through the HeNB GW as an SI proxy.
  • the HeNB can also connect neighboring base stations (such as a home base station or a macro base station) through the X2 GW; wherein the HeNB GW and the X2 GW are optional deployments. As shown in FIG.
  • the eNB1 establishes an indirect X2 interface with the HeNB2 and the HeNB3 through the X2 GW, and an indirect X2 interface is established between the HeNB2 and the HeNB3 through the X2 GW.
  • eNB1 can also establish a direct X2 interface with HeNB1.
  • the HMS HeNB Management System
  • the HeNB can obtain the addresses of the X2 GW and the HeNB GW, and establish an S1 connection and an X2 connection with the two.
  • the HeNB can establish an X2 connection with the opposite base station through the X2 GW.
  • the eNB can discover the cells under the neighboring base stations through the ANR (Automatic Neighbor Relation) function and establish an X2 connection with the neighboring base stations. Specifically, after the UE in the eNB cell measures a strong signal of the neighboring cell, the measurement report is sent to the HeNB, where the PCK Physical Cell Id, the physical cell identifier, and the ECGI (E-UTRAN Cell Global Identifier, E- UTRAN Cell Global Identity), TAC (Tracking Area Code), PLMN list (Public Land Mobile Network). If the neighboring cell is a cell under the home base station, the CSG ID (Closed Subscriber Group ID) and the member status of the UE in the neighboring cell may also be carried.
  • ANR Automatic Neighbor Relation
  • the eNB After obtaining the ECGI (PLMN ID + cell ID) of the neighboring cell, the eNB determines whether it is a macro cell or a home base station cell by using information such as PCI, ECGI, or CSG ID; if it is a macro cell, it takes the first 20 bits of the cell ID. As its eNB ID, if it is a home base station cell, all 28 bits of its cell ID are taken as its eNB ID.
  • the eNB After obtaining the eNB ID of the base station to which the neighboring cell belongs and the TAI (Tracking Area Indicator) (PLMN ID + TAC) of the neighboring cell, the eNB initiates a TNL (Transport Network Layer) address discovery process to The transport layer address used by the neighboring cell to establish an X2 connection is obtained.
  • TAI Track Area Indicator
  • TNL Transport Network Layer
  • the TNL address discovery process is an S1 interface interaction process, and the X2 GW and the HeNB GW are independent network elements and are not integrated in the same network element, the TNL address discovery process does not pass through the X2 GW.
  • the neighboring cell discovered by the eNB is a HeNB cell, and the eNB and the HeNB need to To establish an indirect X2 connection through the X2 GW, the eNB needs to obtain the TNL address of the X2 GW to establish an indirect X2 connection with the HeNB through the X2 GW.
  • the eNB cannot obtain the address of the X2 GW connected to the HeNB discovered by it, and establishes an X2 connection with it.
  • the base station has a "firewall" function for checking whether the source IP address is authorized to communicate with the base station.
  • the base station needs to maintain an Access Control List (ACL), which contains the TNL address of the peer node that is allowed to communicate with the base station.
  • ACL Access Control List
  • the originating base station of the TNL address discovery process can send its own address to the target base station through the process, so as to implement the firewall function of the opposite base station.
  • the target base station can communicate with the source network node only if the TNL address of the source network node with which it communicates is in the ACL of the target base station.
  • Embodiments of the present invention provide a method and system for notifying a transport layer address to overcome the defect that an existing eNB cannot obtain an address of an X2 GW connected to the HeNB it discovers.
  • the first base station sends the transport layer address information of the X2 gateway connected thereto to the second base station; wherein the first base station is a home base station;
  • the second base station initiates an X2 connection establishment procedure according to the received transport layer address information of the X2 gateway.
  • the first base station sends the transport layer address information of the X2 gateway connected thereto to the second base station, including:
  • the first base station initiates a transport layer address discovery process, and sends a base station configuration transmission message to the mobility management entity (MME), where at least the transport layer address information of the X2 gateway connected to the first base station is carried;
  • MME mobility management entity
  • the MME sends an MME configuration transmission message to the second base station, where at least the transport layer address information of the X2 gateway connected to the first base station is carried.
  • the base station configuration transmission message sent by the first base station to the MME further includes connection establishment indication information, where the connection establishment indication information is used to indicate whether the second base station needs to initiate an X2 connection establishment process;
  • the MME configuration transmission message sent by the MME to the second base station further carries the connection establishment indication information
  • the second base station initiates an X2 connection establishment process according to the received transport layer address information of the X2 gateway, including:
  • an X2 connection establishment request message is sent to the X2 gateway.
  • the first base station sends the transport layer address information of the X2 gateway connected thereto to the second base station, including:
  • the second base station initiates a transport layer address discovery process, and sends a base station configuration transmission message to the MME;
  • the MME After receiving the base station configuration transmission message, the MME sends an MME configuration transmission message to the first base station;
  • the first base station sends a base station configuration transmission message to the MME, where at least the transport layer address information of the X2 gateway connected to the first base station is carried;
  • the MME sends an MME configuration transmission message to the second base station, where at least the transport layer address information of the X2 gateway connected to the first base station is carried.
  • the first base station establishes an S1 connection with the MME through the home base station gateway as an S1 proxy
  • the base station configuration transmission message and the MME configuration transmission message transmitted between the first base station and the MME are both transmitted through the home base station gateway.
  • the method further includes:
  • the transport layer address information of the X2 gateway is stored in an access control list (ACL) maintained by the base station;
  • ACL access control list
  • the second base station checks whether the transport layer address of the X2 gateway with which it communicates is in an ACL; if yes, allows the X2 gateway and the local Communication between base stations; otherwise, communication between the X2 gateway and the base station is rejected.
  • the second base station initiates an X2 connection establishment process according to the received transport layer address information of the X2 gateway, including:
  • the second base station sends an X2 setup request message to the X2 gateway, where: the base station identifier information of the second base station, the serving cell information under the second base station, the neighbor cell information of the serving cell, and the connected MME pool information;
  • the X2 interface application layer configuration information of the second base station where the base station configuration update message sent to the first base station includes: information about a serving cell under the second base station, and information about a neighboring cell of the serving cell And the information of the connected MME pool; the information about the serving cell of the first base station, where the base station configuration update message sent to the second base station carries the X2 interface application layer configuration information of the first base station, Information of neighboring cells of the serving cell and information of the connected MME pool.
  • the base station configuration update message sending condition includes: the first base station and the second base station are neighboring base stations, or the first base station and the X2 gateway have established an X2 connection.
  • the second base station initiates an X2 connection establishment according to the received transport layer address information of the X2 gateway.
  • the process including:
  • the second base station sends an X2 setup request message to the X2 gateway, where: the base station identifier information of the first base station, the base station identifier information of the second base station, the serving cell information under the second base station, Adjacent cell information of the serving cell and connected MME pool information.
  • the method further includes:
  • the X2 gateway After receiving the X2 setup request message sent by the second base station, the X2 gateway sends the base station identifier information of the first base station that is carried in the X2 setup request message to the first base station.
  • the X2 setup request message is described.
  • the method further includes:
  • the X2 gateway may perform base station identification information of the first base station and/or the second base station according to the X2 setup request message. And transmitting, by the base station identification information, the base station configuration update message to the first base station and/or the second base station, where the base station configuration update message sent to the first base station carries the X2 of the second base station.
  • the interface application layer configuration information includes: information about a serving cell under the second base station, information about a neighboring cell of the serving cell, and information of a connected MME pool; and a base station configuration update message sent to the second base station
  • the X2 interface application layer configuration information of the first base station includes: information about a serving cell under the first base station, information about a neighboring cell of the serving cell, and information of a connected MME pool.
  • the method further includes:
  • the first base station stores the received X2 interface application layer configuration information of the second base station
  • the second base station stores the received X2 interface application layer configuration information of the first base station.
  • the embodiment of the present invention further provides a notification system for a transport layer address, including: a first base station, configured to send, to a second base station, transport layer address information of an X2 gateway connected thereto;
  • the base station is a home base station;
  • the second base station is configured to initiate an X2 connection establishment procedure according to the received transport layer address information of the X2 gateway.
  • the system further includes: a mobility management entity (MME);
  • the first base station is configured to send the transport layer address information of the X2 gateway connected thereto to the second base station in the following manner:
  • Initiating a transport layer address discovery process sending a base station configuration transmission message to the MME, where at least the transport layer address information of the X2 gateway connected to the first base station is carried;
  • the MME is configured to: send an MME configuration transmission message to the second base station, where at least the transport layer address information of the X2 gateway connected to the first base station is carried.
  • the system further includes: a mobility management entity (MME);
  • MME mobility management entity
  • the second base station is further configured to initiate a transport layer address discovery process, and send a base station configuration transmission message to the MME;
  • the MME is configured to: after receiving the configuration message of the base station, send an MME configuration transmission message to the first base station; and after receiving the base station configuration transmission message sent by the first base station, to the second The base station sends an MME configuration transmission message, where at least the transport layer address information of the X2 gateway connected to the first base station is carried;
  • the first base station is configured to send the transport layer address information of the X2 gateway connected thereto to the second base station in the following manner:
  • the system further comprises a home base station gateway:
  • the home base station gateway is configured to: when the first base station establishes an S1 connection with the MME by using the home base station gateway as an S1 proxy, transmitting the base station configuration transmission message transmitted between the first base station and the MME, and The MME configures a transport message.
  • the second base station is further configured to: after receiving the transport layer address information of the X2 gateway, if there is a firewall function, store the transport layer address information of the X2 gateway in an access control list maintained by the base station (ACL) )
  • the X2 gateway In the subsequent communication process between the second base station and the X2 gateway, check the communication with the X2 gateway Whether the transport layer address of the X2 gateway is in the ACL; if present, the communication between the X2 gateway and the base station is allowed; otherwise, the communication between the X2 gateway and the base station is rejected.
  • the system further includes: an X2 gateway;
  • the second base station is configured to initiate an X2 connection establishment process according to the received transport layer address information of the X2 gateway in the following manner:
  • Sending an X2 setup request message to the X2 gateway where: carrying: the base station identifier information of the second base station, the serving cell information of the second base station, the neighbor cell information of the serving cell, and the connected MME pool information;
  • the base station configuration update message is sent to the first base station and the second base station respectively; And transmitting, by the base station configuration update message sent to the first base station, the X2 interface application layer configuration information of the second base station, where: the information about the serving cell under the second base station, and the neighboring cell of the serving cell Information and information of the connected MME pool; the base station configuration update message sent to the second base station carries the X2 interface application layer configuration information of the first base station, and includes: information about the serving cell under the first base station, Information of neighboring cells of the serving cell and information of the connected MME pool.
  • the base station configuration update message sending condition includes: the first base station and the second base station are neighboring base stations, or the first base station and the X2 gateway have established an X2 connection.
  • the system further includes: an X2 gateway;
  • the second base station is configured to initiate an X2 connection establishment process with the X2 gateway according to the received transport layer address information of the X2 gateway in the following manner:
  • Sending an X2 setup request message to the X2 gateway where: carrying: the base station identifier information of the first base station, the base station identifier information of the second base station, the serving cell information under the second base station, and the phase of the serving cell Neighbor cell information and connected MME pool information.
  • the X2 gateway is configured to: after receiving the X2 setup request message sent by the second base station, according to the base station identifier information of the first base station carried in the X2 setup request message The first base station sends the X2 setup request message.
  • the X2 gateway is configured to: after receiving the X2 setup request message sent by the second base station, according to the base station identifier information of the first base station and/or the first Sending, by the second base station, the base station identification information, the base station configuration update message to the first base station and/or the second base station, where the base station configuration update message sent to the first base station carries the second base station
  • the X2 interface application layer configuration information includes: information about a serving cell under the second base station, information about a neighboring cell of the serving cell, and information of a connected MME pool; and a base station configuration update sent to the second base station
  • the message carries the X2 interface application layer configuration information of the first base station, and includes: information about a serving cell under the first base station, information about a neighboring cell of the serving cell, and information of a connected MME pool.
  • the first base station is further configured to store the received X2 interface application layer configuration information of the second base station;
  • the second base station is further configured to store the received X2 interface application layer configuration information of the first base station.
  • the embodiment of the present invention can notify the target base station of the TNL address of the X2 GW in the case of the X2 GW deployment, so that the indirect X2 connection establishment process of the target base station and the HeNB under the X2 GW can be smoothly performed, and the X2 is enabled.
  • the firewall function of the base station is smoothly executed.
  • FIG. 1 is a schematic diagram of a home base station network architecture in the case where an X2 gateway is deployed in the related art
  • FIG. 2 is a flowchart of a method for notifying a transport layer address in an embodiment of the present invention
  • FIG. 3 is a schematic flow chart of an application example 1 of the present invention.
  • FIG. 6 is a schematic flow chart of an application example 4 of the present invention.
  • Figure 9 is a flow chart showing the application example 7 of the present invention.
  • a method for notifying a transport layer address includes: Step 10: The first base station sends TNL address information of the X2 gateway connected thereto to the second base station, where A base station is a home base station;
  • Step 20 The second base station initiates an X2 connection establishment process according to the received TNL address information of the X2 gateway.
  • the first base station sends the TNL address information of the X2 gateway connected thereto to the second base station, where: the first base station initiates a TNL address discovery process, and sends a base station configuration transmission message to the MME, where at least The TNL address of the X2 gateway connected to a base station;
  • the MME sends an MME configuration transmission message to the second base station, where at least the TNL address information of the X2 gateway connected to the first base station is carried.
  • the first base station sends the TNL address information of the X2 gateway connected thereto to the second base station, where: the second base station initiates a TNL address discovery process, and sends a base station configuration transmission message to the MME; the MME receives the foregoing base station. After the transmission message is configured, the MME configuration transmission message is sent to the first base station; the first base station sends a base station configuration transmission message to the MME, where at least the TNL address information of the X2 gateway connected to the first base station is carried;
  • the MME sends an MME configuration transmission message to the second base station, where at least the first base station is carried
  • the TNL address information of the connected X2 gateway is carried
  • the S1 message transmitted between the first base station and the MME (including the base station configuration transmission message and the MME configuration transmission) The message) needs to be transmitted through the home base station gateway.
  • the second base station may store the TNL address of the X2 gateway in the ACL for subsequent ACL check if it has a firewall function.
  • the second base station needs to check whether the TNL address of the X2 gateway is in the ACL, and if so, allow communication between the X2 gateway and the base station; if not, The communication between the X2 gateway and the base station is rejected.
  • the second base station initiates an X2 connection establishment process according to the received TNL address information of the X2 gateway, including:
  • the second base station establishes an SCTP (Stream Control Transmission Protocol) connection with the X2 gateway according to the TNL address of the received X2 gateway;
  • SCTP Stream Control Transmission Protocol
  • the second base station sends a ⁇ 2 Setup Request message to the ⁇ 2 gateway to initiate the ⁇ 2 connection establishment procedure.
  • This step includes:
  • the second base station sends a ⁇ 2 setup request message to the ⁇ 2 gateway, where: the base station identifier information of the second base station, the serving cell information under the second base station, the neighbor cell information of the serving cell, and the connected pool information;
  • the base station configuration update message is sent to the first base station and the second base station respectively; wherein, the base station configuration update message sent to the first base station
  • the ⁇ 2 interface application layer configuration information of the second base station includes: information of the serving cell under the second base station, information of the neighboring cell of the serving cell, and information of the connected pool; and the base station sent to the second base station
  • the configuration update message carries the ⁇ 2 interface application layer configuration information of the first base station, and includes: information about the serving cell under the first base station, information about the neighboring cell of the serving cell, and information about the connected pool; and,
  • the update message sending condition includes: the first base station and the second base station are neighboring base stations or the first base station has established a ⁇ 2 connection with the ⁇ 2 gateway.
  • the ⁇ 2 gateway may also send a base station configuration update message to all other base stations that have established a
  • the first base station and the second base station respectively store the configuration information of the application layer of the peer X2 interface, and respectively reply the base station configuration update confirmation message to the X2 gateway after the storage.
  • the second base station sends an X2 setup request message to the X2 gateway to initiate an X2 connection establishment procedure.
  • This step includes:
  • the second base station sends an X2 setup request message to the X2 gateway, where: the base station identifier information of the first base station, the base station identifier information of the second base station, the serving cell information under the second base station, the neighbor cell information of the serving cell, and the Connected MME pool information;
  • the X2 gateway After receiving the X2 setup request message sent by the second base station, the X2 gateway sends an X2 setup request message to the first base station according to the base station identifier information of the first base station carried in the X2 setup request message.
  • the X2 gateway receives the X2 setup request message sent by the second base station, according to the base station identifier information of the first base station and/or the base station identifier information of the second base station carried in the X2 setup request message, correspondingly to the first base station And/or the second base station sends a base station configuration update message, where the base station configuration update message sent to the first base station carries the X2 interface application layer configuration information of the second base station, and includes: information about the serving cell under the second base station And the information about the neighboring cell of the serving cell and the information of the connected MME pool; the base station configuration update message sent to the second base station, where the X2 interface application layer configuration information of the first base station is included, including: the serving cell under the first base station Information, information of neighboring cells of the serving cell, and information of the connected MME pool.
  • the first base station and the second base station respectively store the configuration information of the application layer of the peer X2 interface, and respectively reply the base station configuration update confirmation message to the X2 gateway after the storage.
  • This application example describes the process of the TNL address discovery process, in which the source-side home base station sends the TNL address of the X2 GW to which it is connected to the target-side base station, and the target-side base station stores the address for the ACL.
  • the process includes the following steps:
  • Step 201 After measuring the strong signal of the neighboring cell, the UE in the HeNB cell sends a measurement report to the HeNB, where the UE can carry the PCI, ECGI, TAC, and PLMN list.
  • the neighboring cell is a cell under the eNB; if the neighboring cell is a cell under the neighboring HeNB, the measurement report The notification may also carry the CSG ID of the neighboring cell and the membership status of the UE in the neighboring cell.
  • the HeNB After obtaining the ECGI (PLMN ID + cell ID) of the neighboring cell, the HeNB determines that it is a macro cell by using information such as PCI, ECGI, or CSG ID, and takes the first 20 bits of its cell ID as its eNB ID; The base station cell takes all 28 bits of its cell ID as its eNB ID. After obtaining the eNB ID of the base station to which the neighboring cell belongs and the TAI (PLMN + TAC) of the neighboring cell, the HeNB needs to initiate a TNL address discovery process to obtain a transport layer address for establishing an X2 connection of the base station to which the neighboring cell belongs;
  • Step 202 The HeNB sends an eNB Configuration Transfer message to the MME through the S1 interface.
  • the HeNB establishes an SI connection with the MME through the HeNB GW as an SI proxy, and therefore needs to first send the eNB Configuration Transfer message to the HeNB GW.
  • the HeNB determines an X2 connection type (direct connection or X2 GW-based indirect connection) to be established with the base station to which the newly discovered neighboring cell belongs.
  • the HeNB can determine the X2 connection type according to the configuration information of the network management system.
  • the HeNB determines that an X2 GW-based indirect connection with the eNB needs to be established.
  • the eNB Configuration Transfer message includes a TNL address of the X2 GW connected to the HeNB, an eNB ID (base station identifier) of the source base station and the target base station, an TAI of the source cell and the target cell, and an indication that the request type is a TNL address;
  • the cell is the cell under the HeNB where the UE is located, and the target cell is the neighbor cell that the UE measures strong information and reports.
  • the indication is used to instruct the eNB to reply to the HeNB to the transport layer address of the eNB for establishing an X2 connection. If the HeNB is not connected to the HeNB GW, the message is sent directly to the MME without passing through the HeNB GW.
  • Step 203 After receiving the eNB Configuration Transfer message, the HeNB GW sends the eNB to the MME.
  • Step 204 After receiving the eNB Configuration Transfer message, the MME sends an MME Configuration Transfer message to the eNB.
  • the MME may determine, according to the eNB ID of the target base station and the TAI of the target cell carried in the eNB Configuration Transfer message, the target base station that sends the MME Configuration Transfer message.
  • the MME Configuration Transfer message carries the TNL address of the X2 GW connected by the HeNB, the eNB ID of the source base station and the target base station, the ⁇ of the source cell and the target cell, and an indication that the request type is a TNL address;
  • Step 205 if the eNB has a firewall function, the eNB receives the MME Configuration. After the transfer message, the TNL address of the ⁇ 2 GW carried in the ACL is stored in the ACL maintained by the local base station for subsequent ACL check.
  • Step 206 After receiving the MME Configuration Transfer message, the eNB returns an eNB Configuration Transfer message to the MME, where the eNB carries the transport layer address used for establishing the X2 connection, the eNB ID of the source base station and the target base station, and the TAI of the source cell and the target cell. ;
  • Step 207 After receiving the eNB Configuration Transfer message, the MME sends an MME Configuration Transfer message to the HeNB according to the eNB ID of the target base station and the TAI of the target cell, where the message includes the transport layer address of the eNB for establishing the X2 connection.
  • the HeNB establishes an SI connection with the MME through the HeNB GW as the SI proxy, so the MME Configuration Transfer message is first sent to the HeNB GW;
  • Step 208 After receiving the MME Configuration Transfer, the HeNB GW sends the message to the HeNB, where the message includes the transport layer address of the eNB for establishing the X2 connection.
  • Step 209 in this application example, the X2 GW initiates an X2 connection establishment process with the eNB, and sends an X2 setup request message to the eNB;
  • Step 210 The eNB checks whether the TNL address of the source of the received X2 setup request message is included in the ACL maintained by the local device. If yes, the message can be sent to the eNB smoothly; if not, the message will be blocked and cannot be sent to the eNB successfully. Since the TNL address of the X2 GW in the application example is already stored in the ACL, the eNB successfully receives the X2 setup request message sent by the X2 GW;
  • Step 211 The eNB sends an X2 setup response message to the X2 GW.
  • the X2 GW may separately send a base station configuration update message to the eNB and the HeNB to send the information of the HeNB to the eNB, and send the information of the eNB to the HeNB.
  • the application example describes that the TNL address discovery process sends the TNL address of the X2 GW connected to the source side to the target side base station, and the target side base station establishes an indirect X2 interface with the source side home base station through the X2 GW.
  • the process includes the following steps: Step 301: After a UE in a HeNB cell measures a strong signal of a neighboring cell, sending a measurement Reported to the HeNB, which can carry PCI, ECGI, TAC, and PLMN list.
  • the neighboring cell is a cell under the eNB; if the neighboring cell is a cell under the neighboring HeNB, the measurement report may further carry the CSG ID of the neighboring cell and the member status of the UE in the neighboring cell.
  • the HeNB After obtaining the ECGI (PLMN ID + cell ID) of the neighboring cell, the HeNB determines that it is a macro cell by using information such as PCI, ECGI, or CSG ID, and takes the first 20 bits of its cell ID as its eNB ID; The base station cell takes all 28 bits of its cell ID as its eNB ID.
  • the HeNB After obtaining the eNB ID of the base station to which the neighboring cell belongs and the TAI (PLMN + TAC) of the neighboring cell, the HeNB needs to initiate a TNL address discovery process to obtain a transport layer address for establishing an X2 connection of the base station to which the neighboring cell belongs;
  • Step 302 The HeNB sends a base station configuration transmission message to the MME through the S1 interface.
  • the HeNB establishes an SI connection with the MME through the HeNB GW as an SI proxy, and therefore needs to first send the eNB Configuration Transfer message to the HeNB GW.
  • the HeNB determines an X2 connection type (direct connection or X2 GW-based indirect connection) to be established with the base station to which the newly discovered neighboring cell belongs.
  • the HeNB can determine the X2 connection type according to the configuration information of the network management system.
  • the HeNB determines that an X2 GW-based indirect connection with the eNB needs to be established.
  • the eNB Configuration Transfer includes an TNL address of the X2 GW connected to the HeNB, an eNB ID (base station identifier) of the source base station and the target base station, an TAI of the source cell and the target cell, and an indication that the request type is a TNL address; wherein, the source cell That is, the cell under the HeNB where the UE is located, and the target cell is a neighboring cell that the UE measures strong information and reports.
  • the indication is used to instruct the eNB to reply to the HeNB to the transport layer address of the eNB for establishing an X2 connection. If the HeNB is not connected to the HeNB GW, the message is sent directly to the MME without passing through the HeNB GW.
  • the message further includes connection establishment indication information, configured to indicate whether the target base station eNB needs to initiate an X2 connection establishment process with the HeNB.
  • Step 303 After receiving the eNB Configuration Transfer message, the HeNB GW sends the eNB to the MME.
  • Step 304 After receiving the eNB Configuration Transfer message, the MME sends an MME Configuration Transfer message to the eNB.
  • the MME may determine, according to the eNB ID of the target base station carried in the eNB Configuration Transfer message and the TAI of the target cell.
  • the target base station of the MME Configuration Transfer message The MME Configuration Transfer message carries at least the TNL address of the X2 GW connected by the HeNB, the eNB ID of the source base station and the target base station, the TAI of the source cell and the target cell, and an indication that the request type is a TNL address; optionally, the message It also contains connection establishment instructions.
  • Steps 305 to 307 are the same as steps 206 to 208 in the first application example, and are not described herein again.
  • Step 308 If the eNB has established an X2 connection with the X2 GW, the eNB sends an X2 setup request message to the X2 GW. If the eNB has not established an SCTP connection and an X2 connection with the X2 GW, the eNB first establishes an SCTP connection with the X2 GW, and then sends an X2 setup request message to the eNB.
  • the X2 GW; the X2 setup request message includes: an eNB ID of the eNB, the serving cell information under the eNB, the neighbor cell information of the serving cell, and the connected MME pool information; or, the eNB determines whether to initiate according to the connection establishment indication information.
  • the X2 establishment process that is, whether the X2 setup request message is sent to the X2 GW, and if the X2 setup process is determined according to the connection establishment indication information, the X2 setup request message is sent to the X2 GW, and the next step is performed; if the X2 setup process is not initiated. , End.
  • Step 309 the X2 GW replies an X2 setup response message to the eNB, where the message includes an eNB ID of the X2 GW;
  • Step 310 The X2 GW determines that the sending condition of the base station configuration update message is met (eg, according to pre-configured information (such as a pre-configured neighbor relationship, topology, etc.), determining that the HeNB and the eNB are neighboring base stations, or determining the X2 GW.
  • the base station configuration update message needs to be sent to the HeNB to send the X2 interface application layer configuration information of the eNB to the HeNB.
  • the base station configuration update message includes the X2 interface application layer configuration information of the eNB, including: the serving cell information under the eNB, the neighbor cell information of the serving cell, and the connected MME pool information;
  • Step 311 After storing the X2 interface application layer configuration information of the eNB, the HeNB returns a base station configuration update confirmation message to the X2 GW.
  • Step 312 The X2 GW determines that the sending condition of the base station configuration update message is met (eg, according to pre-configured information (such as a pre-configured neighbor relationship, topology, etc.), determining that the HeNB and the eNB are neighboring base stations, or determining the X2 GW. And the HeNB has established an X2 connection, and then needs to send a base station configuration update message to the eNB, to add the X2 interface application layer configuration information of the HeNB to the eNB, where the base station configuration update message includes the H2 interface application layer configuration information of the HeNB (including: Service under HeNB The cell information, the neighbor cell information of the serving cell, and the connected MME pool information). It should be noted that step 312 can be performed before or after step 310;
  • Step 313 After the eNB stores the X2 interface application layer configuration information of the HeNB, the eNB returns a base station configuration update confirmation message to the X2 GW.
  • the application example describes that the TNL address discovery process sends the TNL address of the X2 GW connected to the source side to the target side base station, and the target side base station establishes an indirect X2 interface with the source side home base station through the X2 GW.
  • the process includes the following steps: Steps 401 to 404 are the same as steps 301 to 304 of the second application example, and steps 405 to 407 are the same as steps 206 to 208 of the application example 1. Make a comment.
  • Step 408 If the eNB has established an X2 connection with the X2 GW, the eNB establishes an X2 connection request message to the X2 GW. If the eNB has not established an X2 connection with the X2 GW, the eNB first establishes an SCTP connection with the X2 GW, and then sends an X2 setup request message to the X2 GW.
  • the X2 setup request message includes: an eNB ID of the eNB, an eNB ID of the HeNB, serving cell information under the eNB, neighbor cell information of the serving cell, and the connected MME pool information; or, the eNB determines according to the connection establishment indication information.
  • Whether the X2 establishment process is initiated that is, whether the X2 establishment request message is sent to the X2 GW, and if the X2 establishment process is determined according to the connection establishment indication information, the X2 establishment request message is sent to the X2 GW, and the next step is performed; if the X2 is not initiated. Establish the process and end.
  • Step 409 the X2 GW replies an X2 setup response message to the eNB, where the message includes an eNB ID of the X2 GW;
  • Step 410 The X2 GW determines that the HeNB and the eNB are neighboring base stations according to the eNB ID of the target eNB and the eNB ID of the source HeNB that are carried in the X2 setup request message received in step 409, and needs to send a base station configuration update message to the HeNB.
  • the X2 interface application layer configuration information of the eNB is sent to the HeNB, where the base station configuration update message includes the X2 interface application layer configuration information of the eNB, including: the serving cell information under the eNB, the neighbor cell information of the serving cell, and the connected MME. Pool information
  • Step 411 After the HeNB stores the X2 interface application layer configuration information of the eNB, the H2GW is sent to the X2 GW. Replying to the base station configuration update confirmation message;
  • Step 412 The X2 GW determines that the HeNB and the eNB are neighboring base stations according to the eNB ID of the target eNB and the eNB ID of the source HeNB carried in the X2 setup request message received in step 409, and needs to send a base station configuration update message to the eNB.
  • the X2 interface application layer configuration information of the HeNB is transmitted to the eNB.
  • the message includes the H2 interface application layer configuration information of the HeNB, including: the serving cell information under the HeNB, the neighbor cell information of the serving cell, and the connected MME pool information. It should be noted that step 412 can be performed before or after step 410;
  • Step 413 After the eNB stores the X2 interface application layer configuration information of the HeNB, the eNB returns a base station configuration update confirmation message to the X2 GW.
  • This application example describes that in the TNL address discovery process, the target source side home base station sends the TNL address of the X2 GW connected thereto to the originating base station, and the originating side base station stores the address for the ACL, and passes the X2 GW and the target side home.
  • the process by which the base station establishes an indirect X2 interface includes the following steps:
  • Step 501 After measuring the strong signal of the neighboring cell, the UE in the eNB cell sends a measurement report to the eNB, where the PCI, the ECGL TAC, and the PLMN list are carried.
  • the neighboring cell is a cell under the HeNB, and the measurement also carries the CSG ID of the neighboring cell and the member status of the UE in the cell.
  • the eNB After obtaining the ECGI (PLMN ID + cell ID) of the neighboring cell, the eNB determines that it is a home base station cell by using information such as PCI, ECGI, or CSG ID, and takes all 28 bits of its cell lD as its eNB ID.
  • the eNB ID of the neighboring base station and the TAI (PLMN + TAC) of the neighboring cell the eNB needs to initiate a TNL address discovery process to obtain a transport layer address for establishing the X2 connection;
  • Step 502 The eNB sends an eNB Configuration Transfer message to the MME by using the S1 interface, where the eNB includes an eNB ID of the source base station and the target base station, a TAI of the source cell and the target cell, and an indication that the request type is a TNL address.
  • Step 503 After receiving the eNB Configuration Transfer message, the MME sends an MME Configuration Transfer message to the eNB.
  • MME can be based on eNB Configuration
  • the eNB ID of the target base station carried in the Transfer message and the TAI of the target cell determine the target base station to which the MME Configuration Transfer message is sent.
  • the message carries the eNB ID of the source base station and the target base station, the TAI of the source cell and the target cell, and an indication that the request type is a TNL address.
  • the target side base station HeNB establishes an S1 connection with the MME through the HeNB GW as an S1 proxy, so the MME Configuration Transfer message is first sent to the HeNB GW;
  • Step 504 after receiving the MME Configuration Transfer message, the HeNB GW sends it to the HeNB.
  • Step 505 After receiving the MME Configuration Transfer message, the HeNB returns an eNB Configuration Transfer message to the MME.
  • the HeNB determines an X2 connection type (direct connection or X2 GW-based indirect connection) to be established with the eNB.
  • the HeNB can determine the X2 connection type according to the configuration information of the network management system.
  • the HeNB determines that an X2 GW-based indirect connection with the eNB needs to be established.
  • the eNB Configuration Transfer message includes at least a transport layer address of the X2 GW connected to the HeNB for establishing an X2 connection.
  • the eNB Configuration Transfer message includes at least the transport layer address of the HeNB for establishing the X2 connection.
  • the target-side base station HeNB establishes an SI connection with the MME through the HeNB GW as the SI proxy, so the eNB Configuration Transfer message is first sent to the HeNB GW;
  • Step 506 after receiving the eNB Configuration Transfer message, the HeNB GW sends the message to the MME.
  • Step 507 After receiving the eNB Configuration Transfer message, the MME sends an MME Configuration Transfer message to the eNB according to the eNB ID of the target base station and the TAI of the target cell, where the MME carries the transport layer address of the X2 GW for establishing the X2 connection.
  • Step 508 If the eNB has a firewall function, after receiving the MME Configuration Transfer message, the eNB stores the address of the X2 GW carried in the ACL maintained by the base station for subsequent ACL check.
  • Step 509 The eNB initiates an X2 connection establishment according to the TNL address of the received X2 GW, and sends an X2 setup request message to the X2 GW, where: the eNB ID of the eNB, the serving cell information under the eNB, the neighbor cell information of the serving cell, and the Connected MME pool information;
  • Step 51 The eNB performs an ACL check to determine whether the TNL address of the sender carried in the received X2 setup response message is in the ACL.
  • the eNB has stored the address of the X2 GW in the ACL in step 508. Therefore, the ACL check succeeds, and the eNB successfully receives the X2 setup response message sent by the X2 GW.
  • Step 512 The X2 GW determines that the sending condition of the base station configuration update message is met (eg, determining the HeNB and the eNB as neighboring base stations according to pre-configured information (such as a pre-configured neighbor relationship, topology, etc.), or determining the X2 GW.
  • the base station configuration update message needs to be sent to the HeNB to send the X2 interface application layer configuration information of the eNB to the HeNB.
  • the message includes the X2 interface application layer configuration information of the eNB, including: the serving cell information under the eNB, the neighbor cell information of the monthly service cell, and the connected MME pool information;
  • Step 513 After storing the X2 interface application layer configuration information of the eNB, the HeNB returns a base station configuration update confirmation message to the X2 GW.
  • Step 514 The X2 GW determines that the sending condition of the base station configuration update message is met (eg, according to pre-configured information (such as a pre-configured neighbor relationship, topology, etc.), determining that the HeNB and the eNB are neighboring base stations, or determining the X2 GW. And the HeNB has established an X2 connection, and then needs to send a base station configuration update message to the eNB, to add the X2 interface application layer configuration information of the HeNB to the eNB, where the message includes the H2 interface application layer configuration information of the HeNB, including: The serving cell information, the neighboring cell information of the serving cell, and the connected MME pool information. It should be noted that step 514 can be performed before or after step 512;
  • Step 515 The eNB performs an ACL check to determine whether the TNL address of the sender of the received X2 interface base station configuration update message is in the ACL.
  • the eNB has stored the address of the X2 GW in the ACL in step 508. Therefore, the ACL check succeeds, and the eNB successfully receives the base station configuration update message sent by the X2 GW.
  • Step 516 After the eNB stores the X2 interface application layer configuration information of the HeNB, the eNB returns a base station configuration update confirmation message to the X2 GW.
  • Application example five
  • This application example describes the TNL address discovery process in which the target source side base station sends the TNL address of the X2 GW connected to it to the originating base station, and the originating side base station establishes an indirect X2 interface with the source side home base station through the X2 GW.
  • the process includes the following steps: Steps 601 to 607 are the same as steps 501 to 507 in the fourth application example, and are not repeated here.
  • Step 608 if the eNB has established an X2 connection with the X2 GW, then sends an X2 setup request message to the X2 GW; if the eNB has not established an X2 connection with the X2 GW, the eNB first establishes an SCTP connection with the X2 GW, and then sends an X2 setup request message to the X2 GW;
  • the X2 setup request message includes: an eNB ID of the HeNB, an eNB ID of the eNB, serving cell information under the eNB, neighbor cell information of the serving cell, and connected MME pool information;
  • Step 610 The X2 GW determines that the HeNB and the eNB are neighboring base stations according to the eNB ID of the source HeNB and the eNB ID of the target eNB that are carried in the X2 setup request message received in step 609, and needs to send a base station configuration update message to the HeNB, so that The X2 interface application layer configuration information of the eNB is sent to the HeNB, where the message includes the X2 interface application layer configuration information of the eNB, including: the serving cell information under the eNB, the neighbor cell information of the serving cell, and the connected MME pool information;
  • Step 611 After storing the X2 interface application layer configuration information of the eNB, the HeNB returns a base station configuration update confirmation message to the X2 GW.
  • Step 612 The X2 GW determines that the HeNB and the eNB are neighboring base stations according to the eNB ID of the source HeNB and the eNB ID of the target eNB carried in the X2 setup request message received in step 609, and needs to send a base station configuration update message to the eNB, so that The X2 interface application layer configuration information of the HeNB is sent to the eNB.
  • the message includes the H2 interface application layer configuration information of the HeNB, including: the serving cell information in the HeNB, the neighbor cell information of the serving cell, and the connected MME pool information. It should be noted that step 612 can be performed before or after step 610.
  • Step 613 After the eNB stores the X2 interface application layer configuration information of the HeNB, the eNB returns a base station configuration update confirmation message to the X2 GW.
  • the application example describes that the TNL address discovery process sends the TNL address of the X2 GW connected to the source side to the target side base station, and the target side base station establishes an indirect X2 interface with the source side home base station through the X2 GW.
  • the process includes the following steps: Step 701 to step 708 are the same as steps 401 to 408 in the third application example, and are not described herein again.
  • Step 709 The X2 GW sends the ⁇ 2 setup request message to the HeNB according to the target base station identification information (the eNB ID of the HeNB) carried in the received X2 setup request message.
  • Step 710 The HeNB returns an X2 setup response message to the X2 GW, where the X2 setup response message includes the target base station identifier information (the eNB ID of the eNB);
  • Step 711 The X2 GW further sends an X2 setup response message to the eNB according to the eNB ID of the eNB. In this way, the X2 establishment process is completed between the eNB and the HeNB through the X2 GW.
  • This application example describes the TNL address discovery process in which the target source side base station sends the TNL address of the X2 GW connected to it to the originating base station, and the originating side base station establishes an indirect X2 interface with the source side home base station through the X2 GW.
  • the process includes the following steps: Steps 801 to 808 are the same as steps 601 to 608 in the fifth application example, and are not described herein again.
  • Step 809 The X2 GW sends the ⁇ 2 setup request message to the HeNB according to the target base station identification information (the eNB ID of the HeNB) carried in the received X2 setup request message.
  • Step 810 The HeNB returns an X2 setup response message to the X2 GW, where the X2 setup response message includes the target base station identifier information (the eNB ID of the eNB);
  • Step 811 The X2 GW sends an X2 setup response message to the eNB according to the eNB ID of the eNB. In this way, the X2 establishment process is completed by the X2 GW between the eNB and the HeNB.
  • a notification system of a transport layer address includes: a first base station, configured to send, to a second base station, transport layer address information of an X2 gateway connected thereto; wherein, the first base station is Home base station
  • the second base station is configured to initiate an X2 connection establishment procedure according to the received transport layer address information of the X2 gateway.
  • the system further includes: a mobility management entity (MME);
  • MME mobility management entity
  • the first base station is configured to send the transport layer address information of the X2 gateway connected thereto to the second base station in the following manner:
  • Initiating a transport layer address discovery process sending a base station configuration transmission message to the MME, where at least the transport layer address information of the X2 gateway connected to the first base station is carried;
  • the MME is configured to send an MME configuration transmission message to the second base station, where at least the transport layer address information of the X2 gateway connected to the first base station is carried.
  • the system further includes: a mobility management entity (MME);
  • MME mobility management entity
  • the second base station is further configured to initiate a transport layer address discovery process, and send a base station configuration transmission message to the MME;
  • the MME is configured to: after receiving the configuration message of the base station, send an MME configuration transmission message to the first base station; and further, after receiving the base station configuration transmission message sent by the first base station, to the The second base station sends an MME configuration transmission message, where at least the transport layer address information of the X2 gateway connected to the first base station is carried;
  • the first base station is configured to send the transport layer address information of the X2 gateway connected thereto to the second base station in the following manner:
  • the system further comprises: a home gateway:
  • the home base station gateway is configured to: when the first base station establishes an S1 connection with the MME by using the home base station gateway as an S1 proxy, transmitting the base station configuration transmission message transmitted between the first base station and the MME, and The MME configures a transport message.
  • the home base station gateway is configured to: when the first base station establishes an S1 connection with the MME by using the home base station gateway as an S1 proxy, transmitting the base station configuration transmission message transmitted between the first base station and the MME, and The MME configures a transport message.
  • the second base station is further configured to: after receiving the transport layer address information of the X2 gateway, if there is a firewall function, store the transport layer address information of the X2 gateway in an access control list maintained by the base station (ACL) )
  • the system further includes: an X2 gateway;
  • the second base station is configured to initiate an X2 connection establishment process according to the received transport layer address information of the X2 gateway in the following manner:
  • Sending an X2 setup request message to the X2 gateway where: carrying: the base station identifier information of the second base station, the serving cell information of the second base station, the neighbor cell information of the serving cell, and the connected MME pool information;
  • the base station configuration update message is sent to the first base station and the second base station respectively; And transmitting, by the base station configuration update message sent to the first base station, the X2 interface application layer configuration information of the second base station, where: the information about the serving cell under the second base station, and the neighboring cell of the serving cell Information and information of the connected MME pool; the base station configuration update message sent to the second base station carries the X2 interface application layer configuration information of the first base station, and includes: information about the serving cell under the first base station, Information of neighboring cells of the serving cell and information of the connected MME pool.
  • the base station configuration update message sending condition includes: the first base station and the second base station are neighboring base stations, or the first base station and the X2 gateway have established an X2 connection.
  • the system further includes: an X2 gateway;
  • the second base station is configured to initiate an X2 connection establishment process according to the received transport layer address information of the X2 gateway in the following manner:
  • Sending an X2 setup request message to the X2 gateway where: carrying: the base station of the first base station Identification information, base station identification information of the second base station, serving cell information under the second base station, neighbor cell information of the serving cell, and connected MME pool information;
  • the X2 gateway is further configured to: after receiving the X2 setup request message sent by the second base station, according to the base station identifier information of the first base station carried in the X2 setup request message, to the first The base station transmits the X2 setup request message.
  • the X2 gateway is further configured to: after receiving the X2 setup request message sent by the second base station, according to the base station identifier information of the first base station and/or the The base station identification information of the second base station, and correspondingly, the base station configuration update message is sent to the first base station and/or the second base station, where the base station configuration update message sent to the first base station carries the second
  • the X2 interface application layer configuration information of the base station includes: information about a serving cell under the second base station, information about a neighboring cell of the serving cell, and information of a connected MME pool; and base station configuration sent to the second base station
  • the X2 interface application layer configuration information of the first base station is included in the update message, and the information about the serving cell under the first base station, the information about the neighboring cell of the serving cell, and the information of the connected MME pool.
  • the first base station is further configured to store the received X2 interface application layer configuration information of the second base station;
  • the second base station is further configured to store the received X2 interface application layer configuration information of the first base station.
  • the embodiment of the present invention can notify the target base station of the TNL address of the X2 GW in the case of the X2 GW deployment, so that the indirect X2 connection establishment process of the target base station and the HeNB under the X2 GW can be smoothly performed, and the X2 GW and the X2 GW are enabled.
  • the base station's firewall function is successfully implemented when the target base station communicates

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Abstract

一种传输层地址的通知方法及系统,所述方法包括:第一基站将与其相连的X2网关的传输层地址信息发送给第二基站,其中,第一基站为家庭基站(步骤10);第二基站根据接收到的X2网关的传输层地址信息,发起X2连接建立流程(步骤20)。所述系统包括:第一基站,设置为将与其相连的X2网关的传输层地址信息发送给第二基站;其中,第一基站为家庭基站;第二基站,设置为根据接收到的所述X2网关的传输层地址信息,发起X2连接建立流程。

Description

一种传输层地址的通知方法及系统 技术领域
本发明涉及无线通信技术领域, 尤其涉及一种传输层地址的通知方法及 系统。
背景技术
家庭基站是一种小型低功率基站, 主要用于家庭和办公室等小范围室内 场所。 家庭基站通过室内的电缆、 DSL ( Digital Subscriber Loop , 数字用户 专线)或光纤等有线接入方式连接到移动运营商核心网, 为特定用户提供基 于无线移动通信网络的接入业务。 它是对现有网络部署的有效补充, 能有效 提高室内语音和高速数据业务覆盖。 其具有很多优点, 如低成本、 低功率、 接入简单、 即插即用、 节省回传、 易于与现有终端兼容、 能提高网络覆盖率 等。
第三代伙伴组织计划( Third Generation Partnership Projects ,简称为 3GPP ) 标准组织定义的 LTE ( Long Term Evolution, 长期演进)系统中家庭基站被称 为 HeNB ( home eNB )。 HeNB所支持的功能与 eNB基本一致, HeNB与 EPC ( Evolved Packet Core , 演进分组核心网)之间的进程和 eNB与 EPC之间的 进程基本一致。 由于 HeNB的布署通常没有经过移动运营商的网络规划、 覆 盖范围小且数量众多, 因此为了更方便的管理并支持更多数量的 HeNB , 在 E-UTRAN ( Evolved UTRAN, 演进的通用陆基无线接入网)架构下, 还可能 在 HeNB与 EPC的 S1连接之间引入一个新的网元—— HeNB GW( Home eNB Gateway, HeNB网关), HeNB可通过 HeNB GW作为 SI代理连接移动管理 实体 ( Mobility Management Entity, 简称 MME ) 。
在 LTE RIO版本中 , HeNB之间仅存在 X2直接接口 (即不通过其它节 点 (如代理节点)建立的 X2接口) , 可用于负荷均衡、 切换优化、 信息交 互等, 而宏基站 eNB和家庭基站 HeNB间不支持 X2接口。 在 LTE Rl 1中, 引入了新的功能实体—— X2网关 (简称为 X2 GW ) 。 X2 GW与 HeNB GW 类似, 为可选部署, eNB和 HeNB之间、 HeNB和 HeNB之间可通过 X2 GW 建立非直接的 X2接口, 或者不通过 X2 GW建立直接的 X2接口。 图 1为有 X2网关部署情况下的家庭基站网络架构示意图。 HeNB可通过 HeNB GW作为 SI代理连接 MME。 在 LTE Rl 1版本中 , HeNB还可通过 X2 GW连接相邻基站(如家庭基站或宏基站); 其中, HeNB GW和 X2 GW均 为可选部署。 如图 1所示, eNBl通过 X2 GW与 HeNB2和 HeNB3建立非直 接的 X2接口, HeNB2和 HeNB3间通过 X2 GW建立非直接的 X2接口。 eNBl 还可以与 HeNBl建立直接的 X2接口。
HeNB上电后可通过 HeMS ( HeNB Management System, 家庭基站管理 系统)获得其所属 X2 GW和 HeNB GW的地址, 并分别与两者建立 S1连接 和 X2连接。 在有 X2 GW部署的情况下, 若釆用基于 X2 GW的非直接连接 方式, 则 HeNB可通过 X2 GW与对端基站建立 X2连接。
eNB可通过 ANR ( Automatic Neighbor Relation, 自动邻接关系)功能发 现相邻基站下的小区, 并与相邻基站建立 X2连接。 具体来说, eNB小区下 的 UE测量到相邻小区的较强信号后, 发送测量报告给 HeNB, 其中可携带 PCK Physical Cell Id,物理小区标识)、 ECGI ( E-UTRAN Cell Global Identifier , E-UTRAN小区全球标识)、 TAC ( Tracking Area Code, 跟踪区代码 ) 、 PLMN list ( Public Land Mobile Network, 公共陆地移动网络列表)等。 若该相邻小 区为家庭基站下的小区,则还可以携带 CSG ID( Closed Subscriber Group ID, 闭合用户组标识 )及 UE在该相邻小区的成员状态。 eNB获得该相邻小区的 ECGI ( PLMN ID + cell ID )后, 通过 PCI、 ECGI或 CSG ID等信息判断其为 宏小区还是家庭基站小区; 若为宏小区, 则取其 cell ID的前 20比特作为其 eNB ID; 若为家庭基站小区 , 则取其 cell ID的全部 28比特作为其 eNB ID。 eNB获得相邻小区所属基站的 eNB ID和该相邻小区的 TAI ( Tracking Area Indicator, 艮踪区指示) ( PLMN ID + TAC )后,发起 TNL ( Transport Network Layer, 传输层)地址发现过程, 以获得该相邻小区用于建立 X2连接的传输 层地址。
由于 TNL地址发现过程为 S1接口交互过程, 并且 X2 GW和 HeNB GW 为独立的网元, 并没有合设在同一个网元中, 因此该 TNL地址发现过程并不 经过 X2 GW。 若 eNB发现的相邻小区为 HeNB小区, 且 eNB与该 HeNB需 通过 X2 GW建立非直接 X2连接, 则 eNB需要获得该 X2 GW的 TNL地址, 以通过该 X2 GW与该 HeNB建立非直接的 X2连接。 但在相关技术中, eNB 不能获得与其发现的 HeNB相连的 X2 GW的地址, 并与其建立 X2连接。
另外, 出于安全方面考虑, 在一些网络中, 基站具有 "防火墙" 功能, 用于检查源端的 IP地址是否被授权与该基站通信。 为实现此功能, 基站需维 护一个接入控制列表( Access Control List, 简称为 ACL ) , 该列表中包含合 法的允许与该基站通信的对端节点的 TNL地址。 在现有 LTE标准协议中, TNL地址发现过程的发起端基站可通过该流程将其自身的地址发送给目标端 基站, 以用于实现对端基站的防火墙功能。 在后续的过程中, 只有当与其通 信的源端网络节点的 TNL地址在目标基站的 ACL中, 该目标基站才能与该 源端网络节点进行通信。
发明内容
当 eNB与 HeNB通过 X2 GW建立 X2连接时, eNB要与 X2 GW建立 X2连接, 则 eNB就需要获得 X2 GW的 TNL地址并存储于 ACL中。 本发明 实施例提供一种传输层地址的通知方法及系统, 以克服现有 eNB不能获得与 其发现的 HeNB相连的 X2 GW的地址的缺陷。
本发明实施例提供的一种传输层地址的通知方法, 包括:
第一基站将与其相连的 X2 网关的传输层地址信息发送给第二基站; 其 中, 所述第一基站为家庭基站;
所述第二基站根据接收到的所述 X2网关的传输层地址信息,发起 X2连 接建立流程。
较佳地,
所述第一基站将与其相连的 X2网关的传输层地址信息发送给第二基站, 包括:
所述第一基站发起传输层地址发现过程, 向移动管理实体(MME )发送 基站配置传输消息, 其中至少携带与所述第一基站相连的 X2 网关的传输层 地址信息; 所述 MME向所述第二基站发送 MME配置传输消息, 其中至少携带与 所述第一基站相连的所述 X2网关的传输层地址信息。
较佳地,
所述第一基站向所述 MME发送的所述基站配置传输消息中还携带有连 接建立指示信息; 其中, 所述连接建立指示信息用于指示所述第二基站是否 需要发起 X2连接建立过程;
所述 MME向所述第二基站发送的所述 MME配置传输消息中还携带所 述连接建立指示信息;
所述第二基站根据接收到的 X2网关的传输层地址信息,发起 X2连接建 立流程, 包括:
所述第二基站在由所述第一基站发起的传输层地址发现过程中接收到
X2网关的传输层地址信息情况下, 若判断出接收到的所述 MME配置传输消 息中携带的连接建立指示信息表示需要发起 X2连接建立过程, 则向所述 X2 网关发送 X2连接建立请求消息。
较佳地,
所述第一基站将与其相连的 X2网关的传输层地址信息发送给第二基站, 包括:
所述第二基站发起传输层地址发现过程, 向 MME发送基站配置传输消 息;
所述 MME收到所述基站配置传输消息后, 向所述第一基站发送 MME 配置传输消息;
所述第一基站向所述 MME发送基站配置传输消息, 其中至少携带与所 述第一基站相连的所述 X2网关的传输层地址信息;
所述 MME向所述第二基站发送 MME配置传输消息, 其中至少携带与 所述第一基站相连的所述 X2网关的传输层地址信息。
较佳地,
若所述第一基站通过家庭基站网关作为 S1代理与所述 MME建立 S1连 接, 则所述第一基站与所述 MME之间传输的所述基站配置传输消息及所述 MME配置传输消息均经过所述家庭基站网关进行传输。
较佳地, 所述方法还包括:
所述第二基站在接收到所述 X2 网关的传输层地址信息后, 若具有防火 墙功能, 则将所述 X2 网关的传输层地址信息存储在本基站维护的接入控制 列表(ACL ) 中;
在后续所述第二基站与所述 X2 网关的通信过程中, 所述第二基站检查 与其通信的所述 X2网关的传输层地址是否在 ACL中; 若存在, 则允许所述 X2网关与本基站之间的通信; 否则,拒绝所述 X2网关与本基站之间的通信。
较佳地,
所述第二基站根据接收到的 X2网关的传输层地址信息,发起 X2连接建 立流程, 包括:
所述第二基站向所述 X2网关发送 X2建立请求消息, 其中携带: 所述第 二基站的基站标识信息、 所述第二基站下的服务小区信息、 服务小区的相邻 小区信息及所连接的 MME池信息;
所述 X2网关与所述第二基站完成 X2连接建立后,如判断出满足基站配 置更新消息的发送条件, 则分别向所述第一基站和所述第二基站发送基站配 置更新消息; 其中, 发送给所述第一基站的基站配置更新消息中携带所述第 二基站的 X2接口应用层配置信息, 包括: 所述第二基站下的服务小区的信 息、 该服务小区的相邻小区的信息及连接的 MME池的信息; 发送给所述第 二基站的基站配置更新消息中携带所述第一基站的 X2接口应用层配置信息, 包括: 所述第一基站下的服务小区的信息、 该服务小区的相邻小区的信息及 连接的 MME池的信息。
较佳地,
所述基站配置更新消息发送条件包括: 所述第一基站与所述第二基站为 相邻基站或所述第一基站与所述 X2网关已建立 X2连接。
较佳地,
所述第二基站根据接收到的 X2网关的传输层地址信息,发起 X2连接建 立流程, 具体包括:
所述第二基站向所述 X2网关发送 X2建立请求消息, 其中携带: 所述第 一基站的基站标识信息、 所述第二基站的基站标识信息、 所述第二基站下的 服务小区信息、 该服务小区的相邻小区信息及所连接的 MME池信息。
较佳地, 所述方法还包括:
所述 X2网关在接收到所述第二基站发来的所述 X2建立请求消息后,根 据所述 X2 建立请求消息中携带的所述第一基站的基站标识信息向所述第一 基站发送所述 X2建立请求消息。
较佳地, 所述方法还包括:
所述 X2网关在接收到所述第二基站发来的所述 X2建立请求消息后,根 据所述 X2建立请求消息中携带的所述第一基站的基站标识信息和 /或所述第 二基站的基站标识信息, 相应地向所述第一基站和 /或所述第二基站发送基站 配置更新消息; 其中, 发送给所述第一基站的基站配置更新消息中携带所述 第二基站的 X2接口应用层配置信息, 包括: 所述第二基站下的服务小区的 信息、 该服务小区的相邻小区的信息及连接的 MME池的信息; 发送给所述 第二基站的基站配置更新消息中携带所述第一基站的 X2接口应用层配置信 息, 包括: 所述第一基站下的服务小区的信息、 该服务小区的相邻小区的信 息及连接的 MME池的信息。
较佳地, 所述方法还包括:
所述第一基站对接收到的所述第二基站的 X2接口应用层配置信息进行 存储;
所述第二基站对接收到的所述第一基站的 X2接口应用层配置信息进行 存储。
相应地, 本发明实施例还提供了一种传输层地址的通知系统, 包括: 第一基站, 设置为将与其相连的 X2 网关的传输层地址信息发送给第二 基站; 其中, 所述第一基站为家庭基站;
所述第二基站, 设置为根据接收到的所述 X2 网关的传输层地址信息, 发起 X2连接建立流程。 较佳地, 所述系统还包括: 移动管理实体(MME ) ;
所述第一基站是设置为以如下方式将与其相连的 X2 网关的传输层地址 信息发送给第二基站:
发起传输层地址发现过程, 向所述 MME发送基站配置传输消息, 其中 至少携带与所述第一基站相连的 X2网关的传输层地址信息;
所述 MME设置为: 向所述第二基站发送 MME配置传输消息, 其中至 少携带与所述第一基站相连的所述 X2网关的传输层地址信息。
较佳地, 所述系统还包括: 移动管理实体(MME ) ;
所述第二基站还设置为发起传输层地址发现过程, 向所述 MME发送基 站配置传输消息;
所述 MME设置为收到所述基站配置传输消息后, 向所述第一基站发送 MME配置传输消息; 以及在收到所述第一基站发来的基站配置传输消息后, 向所述第二基站发送 MME配置传输消息, 其中至少携带与所述第一基站相 连的所述 X2网关的传输层地址信息;
所述第一基站是设置为以如下方式将与其相连的 X2 网关的传输层地址 信息发送给第二基站:
向所述 MME发送基站配置传输消息, 其中至少携带与所述第一基站相 连的所述 X2网关的传输层地址信息。
较佳地, 所述系统还包括家庭基站网关:
所述家庭基站网关设置为在所述第一基站通过家庭基站网关作为 S1 代 理与所述 MME建立 S1连接时, 传输所述第一基站与所述 MME之间传输的 所述基站配置传输消息及所述 MME配置传输消息。
较佳地,
所述第二基站还设置为在接收到所述 X2 网关的传输层地址信息后, 若 具有防火墙功能, 则将所述 X2 网关的传输层地址信息存储在本基站维护的 接入控制列表(ACL ) 中;
在后续所述第二基站与所述 X2 网关的通信过程中, 检查与其通信的所 述 X2网关的传输层地址是否在 ACL中; 若存在, 则允许所述 X2网关与本 基站之间的通信; 否则, 拒绝所述 X2网关与本基站之间的通信。
较佳地, 所述系统还包括: X2网关;
所述第二基站是设置为以如下方式根据接收到的 X2 网关的传输层地址 信息, 发起 X2连接建立流程:
向所述 X2网关发送 X2建立请求消息, 其中携带: 所述第二基站的基站 标识信息、 所述第二基站下的服务小区信息、 服务小区的相邻小区信息及所 连接的 MME池信息;
所述 X2网关设置为与所述第二基站完成 X2连接建立后,如判断出满足 基站配置更新消息发送条件, 则分别向所述第一基站和所述第二基站发送基 站配置更新消息; 其中, 发送给所述第一基站的基站配置更新消息中携带所 述第二基站的 X2接口应用层配置信息, 包括: 所述第二基站下的服务小区 的信息、 该服务小区的相邻小区的信息及连接的 MME池的信息; 发送给所 述第二基站的基站配置更新消息中携带所述第一基站的 X2接口应用层配置 信息, 包括: 所述第一基站下的服务小区的信息、 该服务小区的相邻小区的 信息及连接的 MME池的信息。
较佳地,
所述基站配置更新消息发送条件包括: 所述第一基站与所述第二基站为 相邻基站或所述第一基站与所述 X2网关已建立 X2连接。
较佳地, 所述系统还包括: X2网关;
所述第二基站是设置为以如下方式根据接收到的 X2 网关的传输层地址 信息, 发起与所述 X2网关的 X2连接建立流程:
向所述 X2网关发送 X2建立请求消息, 其中携带: 所述第一基站的基站 标识信息、 所述第二基站的基站标识信息、 所述第二基站下的服务小区信息、 该服务小区的相邻小区信息及所连接的 MME池信息。
较佳地,
所述 X2网关设置为在接收到所述第二基站发来的所述 X2建立请求消息 后, 根据所述 X2 建立请求消息中携带的所述第一基站的基站标识信息向所 述第一基站发送所述 X2建立请求消息。
较佳地,
所述 X2网关设置为在接收到所述第二基站发来的所述 X2建立请求消息 后, 根据所述 X2建立请求消息中携带的所述第一基站的基站标识信息和 /或 所述第二基站的基站标识信息, 相应地向所述第一基站和 /或所述第二基站发 送基站配置更新消息; 其中, 发送给所述第一基站的基站配置更新消息中携 带所述第二基站的 X2接口应用层配置信息, 包括: 所述第二基站下的服务 小区的信息、 该服务小区的相邻小区的信息及连接的 MME池的信息; 发送 给所述第二基站的基站配置更新消息中携带所述第一基站的 X2接口应用层 配置信息, 包括: 所述第一基站下的服务小区的信息、 该服务小区的相邻小 区的信息及连接的 MME池的信息。
较佳地,
所述第一基站还设置为对接收到的所述第二基站的 X2接口应用层配置 信息进行存储;
所述第二基站还设置为对接收到的所述第一基站的 X2接口应用层配置 信息进行存储。
釆用本发明实施例能在有 X2 GW部署的情况下 ,将 X2 GW的 TNL地址 通知给目标基站,使得目标基站与 X2 GW下的 HeNB的非直接 X2连接建立 过程能够顺利执行,并使得 X2 GW与目标基站通信时该基站的防火墙功能顺 利执行。 附图概述
图 1是相关技术中有 X2网关部署情况下的家庭基站网络架构示意图; 图 2是本发明实施例中传输层地址的通知方法的流程图;
图 3是本发明应用示例一的流程示意图;
图 4是本发明应用示例二的流程示意图; 图 5是本发明应用示例三的流程示意图;
图 6是本发明应用示例四的流程示意图;
图 7是本发明应用示例五的流程示意图;
图 8是本发明应用示例六的流程示意图;
图 9是本发明应用示例七的流程示意图。
本发明的较佳实施方式
下文中将结合附图对本发明的实施例进行详细说明。 需要说明的是, 在 不冲突的情况下, 本申请中的实施例及实施例中的特征可以相互任意组合。
在本实施例中, 一种传输层地址的通知方法, 如图 2所示, 包括: 步骤 10: 第一基站将与其相连的 X2网关的 TNL地址信息发送给第二基 站; 其中, 所述第一基站为家庭基站;
步骤 20: 第二基站根据接收到的 X2网关的 TNL地址信息, 发起 X2连 接建立流程。
在另一实施例中, 第一基站将与其相连的 X2网关的 TNL地址信息发送 给第二基站, 包括: 第一基站发起 TNL地址发现过程, 向 MME发送基站配置传输消息, 其 中至少携带与第一基站相连的 X2网关的 TNL地址;
MME向第二基站发送 MME配置传输消息,其中至少携带与第一基站相 连的 X2网关的 TNL地址信息。
在另一实施例中, 第一基站将与其相连的 X2网关的 TNL地址信息发送 给第二基站, 包括: 第二基站发起 TNL地址发现过程, 向 MME发送基站配置传输消息; MME收到上述基站配置传输消息后, 向第一基站发送 MME配置传输消息; 第一基站向 MME发送基站配置传输消息, 其中至少携带与第一基站相 连的 X2网关的 TNL地址信息;
MME向第二基站发送 MME配置传输消息,其中至少携带与第一基站相 连的 X2网关的 TNL地址信息。
在上述两个实施例中,若第一基站通过与家庭基站网关作为 S1代理与所 述 MME建立 S1连接, 则第一基站与 MME之间传输的 S1消息 (包括基站 配置传输消息及 MME配置传输消息 )需经过该家庭基站网关进行传输。
在上述步骤 20中, 第二基站在接收到 X2网关的 TNL地址信息后,若具 有防火墙功能,还可将该 X2网关的 TNL地址存储在 ACL中,用于后续 ACL 检查。 在后续第二基站与该 X2网关的通信过程中, 第二基站需检查与 X2网 关的 TNL地址是否在 ACL中, 若存在, 则允许该 X2网关与本基站之间的通 信; 若不存在, 则拒绝该 X2网关与本基站之间的通信。
在上述步骤 20中, 第二基站根据接收到的 X2网关的 TNL地址信息,发 起 X2连接建立流程, 包括:
第二基站根据接收的 X2网关的 TNL地址与该 X2网关建立 SCTP( Stream Control Transmission Protocol, ¾ΐ控制传输协议 )连接;
第二基站向该 Χ2网关发送 Χ2建立请求消息以发起 Χ2连接建立过程。 该步骤包括:
第二基站向该 Χ2网关发送 Χ2建立请求消息, 其中携带: 第二基站的基 站标识信息、 第二基站下的服务小区信息、 服务小区的相邻小区信息及所连 接的 ΜΜΕ池信息;
Χ2网关与第二基站完成 Χ2连接建立后, 如判断满足基站配置更新消息 发送条件, 则分别向第一基站和第二基站发送基站配置更新消息; 其中, 发 送给第一基站的基站配置更新消息中携带有第二基站的 Χ2接口应用层配置 信息, 包括: 第二基站下的服务小区的信息、 该服务小区的相邻小区的信息 及连接的 ΜΜΕ池的信息; 发送给第二基站的基站配置更新消息中携带有第 一基站的 Χ2接口应用层配置信息, 包括: 第一基站下的服务小区的信息、 该服务小区的相邻小区的信息及连接的 ΜΜΕ池的信息; 另外, 基站配置更 新消息发送条件包括: 第一基站与第二基站为相邻基站或第一基站与 Χ2 网 关已建立 Χ2连接。 当然, 在实际实现时, Χ2网关还可以向所有与本 Χ2网 关已建立 Χ2 连接的其它基站发送基站配置更新消息, 其中携带第二基站的 X2接口应用层配置信息。
第一基站及第二基站分别完成对端 X2接口应用层配置信息的存储, 并 在存储后分别向 X2网关回复基站配置更新确认消息。
或者, 第二基站向该 X2网关发送 X2建立请求消息以发起 X2连接建立 过程。 该步骤包括:
第二基站向该 X2网关发送 X2建立请求消息, 其中携带: 第一基站的基 站标识信息、 第二基站的基站标识信息、 第二基站下的服务小区信息、 服务 小区的相邻小区信息及所连接的 MME池信息;
X2网关接收到第二基站发来的 X2建立请求消息后, 根据 X2建立请求 消息中携带的第一基站的基站标识信息向第一基站发送 X2建立请求消息。
或者, X2网关接收到第二基站发来的 X2建立请求消息后, 根据 X2建 立请求消息中携带的第一基站的基站标识信息和 /或第二基站的基站标识信 息, 相应地向第一基站和 /或第二基站发送基站配置更新消息; 其中, 发送给 所述第一基站的基站配置更新消息中携带第二基站的 X2接口应用层配置信 息, 包括: 第二基站下的服务小区的信息、 该服务小区的相邻小区的信息及 连接的 MME池的信息; 发送给第二基站的基站配置更新消息中携带第一基 站的 X2接口应用层配置信息, 包括: 第一基站下的服务小区的信息、 该服 务小区的相邻小区的信息及连接的 MME池的信息。
第一基站及第二基站分别完成对端 X2接口应用层配置信息的存储, 并 在存储后分别向 X2网关回复基站配置更新确认消息。
下面用几个应用示例进行说明。
应用示例一
本应用示例描述的是 TNL地址发现过程中,发起源侧家庭基站将与其连 接的 X2 GW的 TNL地址发送给目标侧基站,目标侧基站存储该地址用于 ACL 的流程。 如图 3所示, 该流程包括以下步骤:
步骤 201 , HeNB小区下的 UE测量到相邻小区的较强信号后, 发送测量 报告给 HeNB , 其中可携带 PCI、 ECGI、 TAC及 PLMN list等。 该应用示例 中相邻小区为 eNB下的小区; 若相邻小区为相邻 HeNB下的小区, 则测量报 告中还可携带该相邻小区的 CSG ID及 UE在该相邻小区的成员状态。 HeNB 获得该相邻小区的 ECGI ( PLMN ID + cell ID )后,通过 PCI、 ECGI或 CSG ID 等信息判断其为宏小区, 则取其 cell ID的前 20比特作为其 eNB ID; 若判断 为家庭基站小区 , 则取其 cell ID的全部 28比特作为其 eNB ID。 HeNB获得 该相邻小区所属基站的 eNB ID和该相邻小区的 TAI ( PLMN + TAC )后, 需 要发起 TNL地址发现过程以获得该相邻小区所属基站的用于建立 X2连接的 传输层地址;
步骤 202, HeNB通过 S1 接口向 MME发送基站配置传输消息 (eNB Configuration Transfer ) 。
该应用示例中 HeNB通过 HeNB GW做为 SI代理与 MME建立 SI连接, 因此需将该 eNB Configuration Transfer消息首先发送至 HeNB GW。 可选的, HeNB判断需与新发现相邻小区所属基站建立的 X2连接类型(直接连接或者 基于 X2 GW的非直接连接)。 例如, HeNB可根据网管系统的配置信息判断 X2连接类型。 该实施例中, HeNB判断需与 eNB建立基于 X2 GW的非直接 连接。 该 eNB Configuration Transfer消息中包含与该 HeNB连接的 X2 GW的 TNL地址、 源基站和目标基站的 eNB ID (基站标识), 源小区和目标小区的 TAI及请求类型为 TNL地址的指示; 其中, 源小区即 UE所在的 HeNB下小 区, 目标小区为 UE测量到较强信息并上报的相邻小区。 其中, 该指示用于 指示 eNB向本 HeNB回复该 eNB的用于建立 X2连接的传输层地址。若 HeNB 不与 HeNB GW相连, 则该消息不经过 HeNB GW, 直接发送至 MME。
步骤 203 , HeNB GW收到 eNB Configuration Transfer消息后, 将其发送 至 MME;
步骤 204, MME接收到 eNB Configuration Transfer消息后, 发送 MME Configuration Transfer消息给 eNB。 其中, MME可根据 eNB Configuration Transfer 消息中携带的目标基站的 eNB ID 和目标小区的 TAI确定其发送 MME Configuration Transfer消息的目标基站。 该 MME Configuration Transfer 消息中携带 HeNB连接的 X2 GW的 TNL地址、源基站和目标基站的 eNB ID , 源小区和目标小区的 ΤΑΙ、 及请求类型为 TNL地址的指示;
步骤 205, 若 eNB有防火墙功能, 则 eNB在收到 MME Configuration Transfer消息后,将其中携带的 Χ2 GW的 TNL地址存储在本基站维护的 ACL 中, 用于后续的 ACL检查;
步骤 206 , eNB 收到 MME Configuration Transfer 消息后, 回复 eNB Configuration Transfer消息给 MME, 其中携带本 eNB用于建立 X2连接的传 输层地址、 源基站和目标基站的 eNB ID及源小区和目标小区的 TAI;
步骤 207 , MME收到 eNB Configuration Transfer消息后 , 根据其中携带 的目标基站的 eNB ID和目标小区的 TAI发送 MME Configuration Transfer消 息给 HeNB, 该消息中包含 eNB的用于建立 X2连接的传输层地址。 由于该 应用示例中 HeNB通过 HeNB GW做为 SI代理与 MME建立 SI连接, 因此 该 MME Configuration Transfer消息首先发送至 HeNB GW;
步骤 208 , HeNB GW收到 MME Configuration Transfer后, 将该消息发 送到 HeNB, 该消息中包含 eNB的用于建立 X2连接的传输层地址;
步骤 209, 在本应用示例中, X2 GW发起与 eNB的 X2连接建立过程, 发送 X2建立请求消息给 eNB;
步骤 210, eNB检查所收到的 X2建立请求消息的发送源端的 TNL地址 是否包含在本设备维护的 ACL中。 若包含, 则该消息能顺利发送至 eNB; 若 不包含,则该消息将被屏蔽,不能顺利发送至 eNB。由于该应用示例中 X2 GW 的 TNL地址已经存储在 ACL中,因此 eNB成功接收 X2 GW发送的 X2建立 请求消息;
步骤 211 , eNB发送 X2建立响应消息给 X2 GW。
X2 GW在与 eNB间 X2连接建立完成后,可分别发送基站配置更新消息 给 eNB和 HeNB ,以将 HeNB的信息发送至 eNB ,将 eNB的信息发送至 HeNB。
应用示例二
本应用示例描述的是 TNL地址发现过程中,发起源侧家庭基站将与其连 接的 X2 GW的 TNL地址发送给目标侧基站,目标侧基站通过该 X2 GW与源 侧家庭基站建立非直接 X2接口的流程。 如图 4所示, 该流程包括以下步骤: 步骤 301 , HeNB小区下的 UE测量到相邻小区的较强信号后, 发送测量 报告给 HeNB , 其中可携带 PCI、 ECGI、 TAC及 PLMN list等。 该应用示例 中相邻小区为 eNB下的小区; 若相邻小区为相邻 HeNB下的小区, 则测量报 告中还可携带该相邻小区的 CSG ID及 UE在该相邻小区的成员状态。 HeNB 获得该相邻小区的 ECGI ( PLMN ID + cell ID )后,通过 PCI、 ECGI或 CSG ID 等信息判断其为宏小区, 则取其 cell ID的前 20比特作为其 eNB ID; 若判断 为家庭基站小区 , 则取其 cell ID的全部 28比特作为其 eNB ID。 HeNB获得 该相邻小区所属基站的 eNB ID和该相邻小区的 TAI ( PLMN + TAC )后, 需 要发起 TNL地址发现过程以获得该相邻小区所属基站的用于建立 X2连接的 传输层地址;
步骤 302, HeNB通过 S1 接口向 MME发送基站配置传输消息 (eNB
Configuration Transfer ) 。
该应用示例中 HeNB通过 HeNB GW做为 SI代理与 MME建立 SI连接, 因此需将该 eNB Configuration Transfer消息首先发送至 HeNB GW。 可选的, HeNB判断需与新发现相邻小区所属基站建立的 X2连接类型(直接连接或者 基于 X2 GW的非直接连接)。 例如, HeNB可根据网管系统的配置信息判断 X2连接类型。 该实施例中, HeNB判断需与 eNB建立基于 X2 GW的非直接 连接。该 eNB Configuration Transfer中包含与该 HeNB连接的 X2 GW的 TNL 地址、 源基站和目标基站的 eNB ID (基站标识) , 源小区和目标小区的 TAI 及请求类型为 TNL地址的指示; 其中, 源小区即 UE所在的 HeNB下小区, 目标小区为 UE测量到较强信息并上报的相邻小区。 其中, 该指示用于指示 eNB向本 HeNB回复该 eNB的用于建立 X2连接的传输层地址。 若 HeNB不 与 HeNB GW相连, 则该消息不经过 HeNB GW, 直接发送至 MME。可选的, 该消息中还包含连接建立指示信息, 用于指示目标基站 eNB是否需要发起与 HeNB的 X2连接建立过程。
步骤 303 , HeNB GW收到 eNB Configuration Transfer消息后, 将其发送 至 MME;
步骤 304, MME接收到 eNB Configuration Transfer消息后, 发送 MME Configuration Transfer消息给 eNB。 其中, MME可根据 eNB Configuration Transfer 消息中携带的目标基站的 eNB ID 和目标小区的 TAI确定其发送 MME Configuration Transfer消息的目标基站。 该 MME Configuration Transfer 消息中至少携带 HeNB连接的 X2 GW的 TNL地址、源基站和目标基站的 eNB ID, 源小区和目标小区的 TAI、 及请求类型为 TNL地址的指示; 可选的, 该 消息中还包含连接建立指示信息。
步骤 305〜步骤 307与应用示例一中步骤 206〜步骤 208相同,此处不再进 行赘述。
步骤 308, eNB若与 X2 GW已经建立 X2连接, 则发送 X2建立请求消 息给 X2 GW; eNB若与 X2 GW尚未建立 SCTP连接和 X2连接, 则先与其 建立 SCTP连接, 再发送 X2建立请求消息给 X2 GW; 其中, X2建立请求消 息中包含: eNB的 eNB ID、 eNB下的服务小区信息、 服务小区的相邻小区信 息及所连接的 MME池信息; 或者, eNB根据连接建立指示信息确定是否发 起 X2建立过程, 即是否发送 X2建立请求消息给 X2 GW, 如根据上述连接 建立指示信息确定发起 X2建立过程,则发送 X2建立请求消息给 X2 GW后, 执行下一步骤; 如果不发起 X2建立流程, 结束。
步骤 309, X2 GW回复 X2建立响应消息给 eNB, 该消息中包含 X2 GW 的 eNB ID;
步骤 310, X2 GW判断出满足基站配置更新消息的发送条件(如根据预 配置的信息(如预配置的邻区关系, 拓朴结构等)确定 HeNB和 eNB为相邻 基站, 或判断出 X2 GW与 HeNB已建立 X2连接 ) , 则需要发送基站配置更 新消息给 HeNB , 以将 eNB的 X2接口应用层配置信息发送至 HeNB。该基站 配置更新消息中包含 eNB的 X2接口应用层配置信息, 包括: eNB下的服务 小区信息、 服务小区的相邻小区信息及所连接的 MME池信息;
步骤 311 , HeNB将 eNB的 X2接口应用层配置信息存储完成后,向 X2 GW 回复基站配置更新确认消息;
步骤 312, X2 GW判断出满足基站配置更新消息的发送条件(如根据预 配置的信息(如预配置的邻区关系, 拓朴结构等)确定 HeNB和 eNB为相邻 基站, 或判断出 X2 GW与 HeNB已建立 X2连接 ) , 则需要发送基站配置更 新消息给 eNB, 以将 HeNB的 X2接口应用层配置信息添加至 eNB, 该基站 配置更新消息中包含 HeNB的 X2接口应用层配置信息(包括: HeNB下的服 务小区信息、 服务小区的相邻小区信息及所连接的 MME池信息) 。 需要说 明的是, 步骤 312可在步骤 310之前或之后执行;
步骤 313 , eNB将 HeNB的 X2接口应用层配置信息存储完成后,向 X2 GW 回复基站配置更新确认消息。
应用示例三
本应用示例描述的是 TNL地址发现过程中,发起源侧家庭基站将与其连 接的 X2 GW的 TNL地址发送给目标侧基站,目标侧基站通过该 X2 GW与源 侧家庭基站建立非直接的 X2接口的流程。如图 5所示,该流程包括以下步骤: 步骤 401〜步骤 404与应用示例二中步骤 301〜步骤 304相同, 步骤 405~ 步骤 407与应用示例一中步骤 206〜步骤 208相同, 此处不再进行赞述。
步骤 408, eNB若与 X2 GW已经建立 X2连接, 则发送 X2建立请求消 息给 X2 GW; eNB若与 X2 GW尚未建立 X2连接, 则先与其建立 SCTP连 接,再发送 X2建立请求消息给 X2 GW;其中, X2建立请求消息中包括: eNB 的 eNB ID、 HeNB的 eNB ID、 eNB下的服务小区信息、服务小区的相邻小区 信息及所连接的 MME池信息; 或者, eNB根据连接建立指示信息确定是否 发起 X2建立过程, 即是否发送 X2建立请求消息给 X2 GW, 如根据上述连 接建立指示信息确定发起 X2建立过程, 则发送 X2建立请求消息给 X2 GW 后, 执行下一步骤; 如果不发起 X2建立流程, 结束。
步骤 409, X2 GW回复 X2建立响应消息给 eNB, 该消息中包含 X2 GW 的 eNB ID;
步骤 410, X2 GW根据步骤 409接收的 X2建立请求消息中携带的目标 端 eNB的 eNB ID和源端 HeNB的 eNB ID, 确定 HeNB和 eNB为相邻基站, 需要发送基站配置更新消息给 HeNB, 以将 eNB的 X2接口应用层配置信息 发送至 HeNB, 该基站配置更新消息中包含 eNB的 X2接口应用层配置信息, 包括: eNB 下的服务小区信息、 服务小区的相邻小区信息及所连接的 MME 池信息;
步骤 411 , HeNB将 eNB的 X2接口应用层配置信息存储完成后,向 X2 GW 回复基站配置更新确认消息;
步骤 412, X2 GW根据步骤 409接收的 X2建立请求消息中携带的目标 端 eNB的 eNB ID和源端 HeNB的 eNB ID, 确定 HeNB和 eNB为相邻基站, 需要发送基站配置更新消息给 eNB, 以将 HeNB的 X2接口应用层配置信息 发送至 eNB。 该消息中包含 HeNB的 X2接口应用层配置信息, 包括: HeNB 下的服务小区信息、 服务小区的相邻小区信息及所连接的 MME池信息。 需 要说明的是, 步骤 412可在步骤 410之前或之后执行;
步骤 413 , eNB将 HeNB的 X2接口应用层配置信息存储完成后,向 X2 GW 回复基站配置更新确认消息。
应用示例四
本应用示例描述的是 TNL地址发现过程中, 目标源侧家庭基站将与其连 接的 X2 GW的 TNL地址发送给发起侧基站, 发起侧基站存储该地址用于 ACL, 并且通过 X2 GW与目标侧家庭基站建立非直接的 X2接口的流程。 如 图 6所示, 该流程包括以下步骤:
步骤 501 , eNB小区下的 UE测量到相邻的小区的较强信号后,发送测量 报告给 eNB, 其中可携带 PCI、 ECGL TAC及 PLMN list等。 该应用示例中 相邻小区为 HeNB下的小区, 则测量 ^艮告中还携带该相邻小区的 CSG ID及 UE在该小区的成员状态。 eNB获得该相邻小区的 ECGI ( PLMN ID + cell ID ) 后,通过 PCI、 ECGI或 CSG ID等信息判断其为家庭基站小区,则取其 cell lD 的全部 28比特作为其 eNB ID。 eNB获得相邻基站的 eNB ID和相邻小区的 TAI ( PLMN + TAC )后, 需要发起 TNL地址发现过程以获得其用于建立 X2 连接的传输层地址;
步骤 502 , eNB 通过 S1 接口向 MME发送基站配置传输消息 (eNB Configuration Transfer ) , 该消息中包含源基站和目标基站的 eNB ID、 源小区 和目标小区的 TAI及请求类型为 TNL地址的指示;
步骤 503 , MME接收到 eNB Configuration Transfer消息后, 发送 MME Configuration Transfer消息给 eNB。 其中, MME可根据 eNB Configuration Transfer 消息中携带的目标基站的 eNB ID 和目标小区的 TAI确定其发送 MME Configuration Transfer消息的目标基站。 该消息中携带源基站和目标基 站的 eNB ID、 源小区和目标小区的 TAI及请求类型为 TNL地址的指示。 该 应用示例中目标侧基站 HeNB通过 HeNB GW做为 S1代理与 MME建立 S1 连接, 因此该 MME Configuration Transfer消息首先发送至 HeNB GW;
步骤 504, HeNB GW收到 MME Configuration Transfer消息后,将其发送 至 HeNB;
步骤 505, HeNB收到 MME Configuration Transfer消息后, 回复 eNB Configuration Transfer消息给 MME。 可选的, HeNB判断需与 eNB建立的 X2 连接类型(直接连接或者基于 X2 GW的非直接连接)。 例如, HeNB可根据 网管系统的配置信息判断 X2连接类型。 该实施例中, HeNB判断需与 eNB 建立基于 X2 GW的非直接连接。 该 eNB Configuration Transfer消息中至少包 含与 HeNB连接的 X2 GW的用于建立 X2连接的传输层地址。若 HeNB判断 需与 eNB建立直接连接, 则该 eNB Configuration Transfer消息中至少包含 HeNB的用于建立 X2连接的传输层地址。该应用示例中目标侧基站 HeNB通 过 HeNB GW做为 SI代理与 MME建立 SI连接, 因此该 eNB Configuration Transfer消息首先发送至 HeNB GW;
步骤 506, HeNB GW收到 eNB Configuration Transfer消息后, 将该消息 发送至 MME;
步骤 507 , MME收到 eNB Configuration Transfer消息后 , 根据其中携带 的目标基站的 eNB ID和目标小区的 TAI发送 MME Configuration Transfer消 息给 eNB, 其中携带 X2 GW的用于建立 X2连接的传输层地址;
步骤 508, 若 eNB有防火墙功能, 则 eNB在收到 MME Configuration Transfer消息后, 将其中携带的 X2 GW的地址存储在本基站维护的 ACL中, 用于后续的 ACL检查;
步骤 509, eNB根据接收的 X2 GW的 TNL地址发起 X2连接建立, 向 X2 GW发送 X2建立请求消息, 其中携带: eNB的 eNB ID、 eNB下的服务小 区信息、 服务小区的相邻小区信息及所连接的 MME池信息; 步骤 510 , X2 GW回复 X2建立响应消息给 eNB , 该消息中携带 Χ2 GW 的 eNB ID;
步骤 51 1 , eNB执行 ACL检查, 判断接收到的 X2建立响应消息携带的 发送端的 TNL地址是否在 ACL中。 该应用示例中 eNB在步骤 508中已经将 X2 GW的地址存储于 ACL, 因此 ACL检查成功, eNB成功接收 X2 GW发 送的 X2建立响应消息;
步骤 512 , X2 GW判断出满足基站配置更新消息的发送条件(如根据预 配置的信息(如预配置的邻区关系, 拓朴结构等)确定 HeNB和 eNB为相邻 基站, 或判断出 X2 GW与 HeNB已建立 X2连接 ) , 则需要发送基站配置更 新消息给 HeNB , 以将 eNB的 X2接口应用层配置信息发送至 HeNB。该消息 中包含 eNB的 X2接口应用层配置信息, 包括: eNB下的服务小区信息、 月良 务小区的相邻小区信息及所连接的 MME池信息;
步骤 513 , HeNB将 eNB的 X2接口应用层配置信息存储完成后,向 X2 GW 回复基站配置更新确认消息;
步骤 514 , X2 GW判断出满足基站配置更新消息的发送条件(如根据预 配置的信息(如预配置的邻区关系, 拓朴结构等)确定 HeNB和 eNB为相邻 基站, 或判断出 X2 GW与 HeNB已建立 X2连接 ) , 则需要发送基站配置更 新消息给 eNB , 以将 HeNB的 X2接口应用层配置信息添加至 eNB , 该消息 中包含 HeNB的 X2接口应用层配置信息, 包括: HeNB下的服务小区信息、 服务小区的相邻小区信息及所连接的 MME池信息。需要说明的是, 步骤 514 可在步骤 512之前或之后执行;
步骤 515 , eNB执行 ACL检查, 判断接收到的 X2接口基站配置更新消 息的发送端的 TNL地址是否在 ACL中。 该应用示例中 eNB在步骤 508中已 经将 X2 GW的地址存储于 ACL, 因此 ACL检查成功, eNB成功接收 X2 GW 发送的基站配置更新消息;
步骤 516 , eNB将 HeNB的 X2接口应用层配置信息存储完成后,向 X2 GW 回复基站配置更新确认消息。 应用示例五
本应用示例描述的是 TNL地址发现过程中, 目标源侧家庭基站将与其连 接的 X2 GW的 TNL地址发送给发起侧基站,发起侧基站通过 X2 GW与源侧 家庭基站建立非直接的 X2接口的流程。 如图 7所示, 该流程包括以下步骤: 步骤 601〜步骤 607与应用示例四中步骤 501〜步骤 507相同,此处不再重 复。
步骤 608, eNB若与 X2 GW已经建立 X2连接, 则发送 X2建立请求消 息给 X2 GW; eNB若与 X2 GW尚未建立 X2连接, 则先与其建立 SCTP连 接, 再发送 X2建立请求消息给 X2 GW; X2建立请求消息中包括: HeNB的 eNB ID、 eNB的 eNB ID、 eNB下的服务小区信息、 该服务小区的相邻小区信 息及所连接的 MME池信息;
步骤 609 , X2 GW回复 X2建立响应消息给 eNB , 该消息中包含 X2 GW 的 eNB ID;
步骤 610, X2 GW根据步骤 609接收的 X2建立请求消息中携带的源端 HeNB的 eNB ID、 目标端 eNB的 eNB ID确定 HeNB和 eNB为相邻基站 , 需 要发送基站配置更新消息给 HeNB, 以将 eNB的 X2接口应用层配置信息发 送至 HeNB , 该消息中包含 eNB的 X2接口应用层配置信息, 包括: eNB下 的服务小区信息、 服务小区的相邻小区信息及所连接的 MME池信息;
步骤 611 , HeNB将 eNB的 X2接口应用层配置信息存储完成后,向 X2 GW 回复基站配置更新确认消息;
步骤 612, X2 GW根据步骤 609接收的 X2建立请求消息中携带的源端 HeNB的 eNB ID、 目标端 eNB的 eNB ID确定 HeNB和 eNB为相邻基站, 需 要发送基站配置更新消息给 eNB, 以将 HeNB的 X2接口应用层配置信息发 送至 eNB。 该消息中包含 HeNB的 X2接口应用层配置信息, 包括: HeNB下 的服务小区信息、 服务小区的相邻小区信息及所连接的 MME池信息。 需要 说明的是, 步骤 612可在步骤 610之前或之后执行。
步骤 613 , eNB将 HeNB的 X2接口应用层配置信息存储完成后,向 X2 GW 回复基站配置更新确认消息。 应用示例六
本应用示例描述的是 TNL地址发现过程中,发起源侧家庭基站将与其连 接的 X2 GW的 TNL地址发送给目标侧基站,目标侧基站通过该 X2 GW与源 侧家庭基站建立非直接的 X2接口的流程。如图 8所示,该流程包括以下步骤: 步骤 701〜步骤 708与应用示例三中步骤 401〜步骤 408相同,此处不再进 行赘述。
步骤 709 , X2 GW根据接收到的 X2建立请求消息中携带的目标基站标 识信息 ( HeNB的 eNB ID ) , 将该 Χ2建立请求消息发送至该 HeNB;
步骤 710, HeNB回复 X2建立响应消息给 X2 GW, 该 X2建立响应消息 中包含目标基站标识信息 ( eNB的 eNB ID ) ;
步骤 711、 X2 GW再根据该 eNB的 eNB ID将 X2建立响应消息发送至 eNB。 这样, eNB和 HeNB之间通过 X2 GW完成 X2建立过程。
应用示例七
本应用示例描述的是 TNL地址发现过程中, 目标源侧家庭基站将与其连 接的 X2 GW的 TNL地址发送给发起侧基站,发起侧基站通过 X2 GW与源侧 家庭基站建立非直接的 X2接口的流程。 如图 9所示, 该流程包括以下步骤: 步骤 801〜步骤 808与应用示例五中步骤 601〜步骤 608相同,此处不再进 行赘述。
步骤 809 , X2 GW根据接收到的 X2建立请求消息中携带的目标基站标 识信息 ( HeNB的 eNB ID ) , 将该 Χ2建立请求消息发送至该 HeNB;
步骤 810, HeNB回复 X2建立响应消息给 X2 GW, 该 X2建立响应消息 中包含目标基站标识信息 ( eNB的 eNB ID ) ;
步骤 811 , X2 GW再根据该 eNB的 eNB ID将 X2建立响应消息发送至 eNB。 这样, eNB和 HeNB之间通过 X2 GW完成 X2建立过程。 此外, 在本实施例中, 一种传输层地址的通知系统, 包括: 第一基站, 设置为将与其相连的 X2 网关的传输层地址信息发送给第二 基站; 其中, 所述第一基站为家庭基站;
所述第二基站, 设置为根据接收到的所述 X2 网关的传输层地址信息, 发起 X2连接建立流程。
较佳地, 所述系统还包括: 移动管理实体(MME ) ;
所述第一基站是设置为以如下方式将与其相连的 X2 网关的传输层地址 信息发送给第二基站:
发起传输层地址发现过程, 向所述 MME发送基站配置传输消息, 其中 至少携带与所述第一基站相连的 X2网关的传输层地址信息;
所述 MME设置为向所述第二基站发送 MME配置传输消息, 其中至少 携带与所述第一基站相连的所述 X2网关的传输层地址信息。
较佳地, 所述系统还包括: 移动管理实体(MME ) ;
所述第二基站还设置为发起传输层地址发现过程, 向所述 MME发送基 站配置传输消息;
所述 MME设置为收到所述基站配置传输消息后, 向所述第一基站发送 MME 配置传输消息; 还用于在收到所述第一基站发来的基站配置传输消息 后, 向所述第二基站发送 MME配置传输消息, 其中至少携带与所述第一基 站相连的所述 X2网关的传输层地址信息;
所述第一基站是设置为以如下方式将与其相连的 X2 网关的传输层地址 信息发送给第二基站:
向所述 MME发送基站配置传输消息, 其中至少携带与所述第一基站相 连的所述 X2网关的传输层地址信息。
较佳地, 所述系统还包括: 家庭网关:
所述家庭基站网关设置为在所述第一基站通过家庭基站网关作为 S1 代 理与所述 MME建立 S1连接时, 传输所述第一基站与所述 MME之间传输的 所述基站配置传输消息及所述 MME配置传输消息。 较佳地,
所述第二基站还设置为在接收到所述 X2 网关的传输层地址信息后, 若 具有防火墙功能, 则将所述 X2 网关的传输层地址信息存储在本基站维护的 接入控制列表(ACL ) 中;
在后续所述第二基站与所述 X2 网关的通信过程中, 检查与其通信的所 述 X2网关的传输层地址是否在 ACL中; 若存在, 则允许所述 X2网关与本 基站之间的通信; 若不存在, 拒绝所述 X2网关与本基站之间的通信。
较佳地, 所述系统还包括: X2网关;
所述第二基站是设置为以如下方式根据接收到的 X2 网关的传输层地址 信息, 发起 X2连接建立流程:
向所述 X2网关发送 X2建立请求消息, 其中携带: 所述第二基站的基站 标识信息、 所述第二基站下的服务小区信息、 服务小区的相邻小区信息及所 连接的 MME池信息;
所述 X2网关设置为与所述第二基站完成 X2连接建立后,如判断出满足 基站配置更新消息发送条件, 则分别向所述第一基站和所述第二基站发送基 站配置更新消息; 其中, 发送给所述第一基站的基站配置更新消息中携带所 述第二基站的 X2接口应用层配置信息, 包括: 所述第二基站下的服务小区 的信息、 该服务小区的相邻小区的信息及连接的 MME池的信息; 发送给所 述第二基站的基站配置更新消息中携带所述第一基站的 X2接口应用层配置 信息, 包括: 所述第一基站下的服务小区的信息、 该服务小区的相邻小区的 信息及连接的 MME池的信息。
较佳地,
所述基站配置更新消息发送条件包括: 所述第一基站与所述第二基站为 相邻基站或所述第一基站与所述 X2网关已建立 X2连接。
较佳地, 所述系统还包括: X2网关;
所述第二基站是设置为以如下方式根据接收到的 X2 网关的传输层地址 信息, 发起 X2连接建立流程:
向所述 X2网关发送 X2建立请求消息, 其中携带: 所述第一基站的基站 标识信息、 所述第二基站的基站标识信息、 所述第二基站下的服务小区信息、 该服务小区的相邻小区信息及所连接的 MME池信息;
较佳地,
所述 X2网关还设置为在接收到所述第二基站发来的所述 X2建立请求消 息后, 根据所述 X2 建立请求消息中携带的所述第一基站的基站标识信息向 所述第一基站发送所述 X2建立请求消息。
较佳地,
所述 X2网关还设置为在接收到所述第二基站发来的所述 X2建立请求消 息后, 根据所述 X2建立请求消息中携带的所述第一基站的基站标识信息和 / 或所述第二基站的基站标识信息, 相应地向所述第一基站和 /或所述第二基站 发送基站配置更新消息; 其中, 发送给所述第一基站的基站配置更新消息中 携带所述第二基站的 X2接口应用层配置信息, 包括: 所述第二基站下的服 务小区的信息、 该服务小区的相邻小区的信息及连接的 MME池的信息; 发 送给所述第二基站的基站配置更新消息中携带所述第一基站的 X2接口应用 层配置信息, 包括: 所述第一基站下的服务小区的信息、 该服务小区的相邻 小区的信息及连接的 MME池的信息。
较佳地,
所述第一基站还设置为对接收到的所述第二基站的 X2接口应用层配置 信息进行存储;
所述第二基站还设置为对接收到的所述第一基站的 X2接口应用层配置 信息进行存储。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成, 所述程序可以存储于计算机可读存储介质中, 如只读 存储器、 磁盘或光盘等。 可选地, 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地, 上述实施例中的各模块 /单元可以釆用 硬件的形式实现, 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。 以上所述仅为本发明的优选实施例而已, 并非用于限定本发明的保护范 围。 根据本发明的发明内容, 还可有其他多种实施例, 在不背离本发明精神 改变和变形, 凡在本发明的精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。
工业实用性
本发明实施例能在有 X2 GW部署的情况下,将 X2 GW的 TNL地址通知 给目标基站,使得目标基站与 X2 GW下的 HeNB的非直接 X2连接建立过程 能够顺利执行,并使得 X2 GW与目标基站通信时该基站的防火墙功能顺利执

Claims

权 利 要 求 书
1、 一种传输层地址的通知方法, 包括:
第一基站将与其相连的 X2 网关的传输层地址信息发送给第二基站; 其 中, 所述第一基站为家庭基站;
所述第二基站根据接收到的所述 X2网关的传输层地址信息,发起 X2连 接建立流程。
2、 如权利要求 1所述的方法, 其中:
所述第一基站将与其相连的 X2网关的传输层地址信息发送给第二基站, 包括:
所述第一基站发起传输层地址发现过程, 向移动管理实体(MME )发送 基站配置传输消息, 所述基站配置传输消息携带与所述第一基站相连的 X2 网关的传输层地址信息;
所述 MME向所述第二基站发送 MME配置传输消息,所述 MME配置传 输消息携带与所述第一基站相连的所述 X2网关的传输层地址信息。
3、 如权利要求 2所述的方法, 其中:
所述第一基站向所述 MME发送的所述基站配置传输消息还携带有连接 建立指示信息; 其中, 所述连接建立指示信息用于指示所述第二基站是否需 要发起 X2连接建立过程;
所述 MME向所述第二基站发送的所述 MME配置传输消息中还携带所 述连接建立指示信息;
所述第二基站根据接收到的 X2网关的传输层地址信息,发起 X2连接建 立流程, 包括:
所述第二基站在由所述第一基站发起的传输层地址发现过程中接收到 X2网关的传输层地址信息情况下, 若判断出接收到的所述 MME配置传输消 息中携带的连接建立指示信息表示需要发起 X2连接建立过程, 则向所述 X2 网关发送 X2连接建立请求消息。
4、 如权利要求 1所述的方法, 其中: 所述第一基站将与其相连的 X2网关的传输层地址信息发送给第二基站, 包括:
所述第二基站发起传输层地址发现过程, 向 MME发送基站配置传输消 息;
所述 MME收到所述基站配置传输消息后, 向所述第一基站发送 MME 配置传输消息;
所述第一基站向所述 MME发送基站配置传输消息, 所述基站配置传输 消息携带与所述第一基站相连的所述 X2网关的传输层地址信息;
所述 MME向所述第二基站发送 MME配置传输消息,所述 MME配置传 输消息携带与所述第一基站相连的所述 X2网关的传输层地址信息。
5、 如权利要求 2~4中任意一项所述的方法, 其中:
若所述第一基站通过家庭基站网关作为 S1代理与所述 MME建立 S1连 接, 则所述第一基站与所述 MME之间传输的所述基站配置传输消息及所述 MME配置传输消息均经过所述家庭基站网关进行传输。
6、 如权利要求 1所述的方法, 还包括:
所述第二基站在接收到所述 X2 网关的传输层地址信息后, 若具有防火 墙功能, 则将所述 X2 网关的传输层地址信息存储在本基站维护的接入控制 列表(ACL ) 中;
在所述第二基站与所述 X2 网关的通信过程中, 所述第二基站检查与其 通信的所述 X2网关的传输层地址是否在 ACL中; 若存在, 则允许所述 X2 网关与本基站之间的通信; 若不存在, 拒绝所述 X2 网关与本基站之间的通 信。
7、 如权利要求 1或 3所述的方法, 其中:
所述第二基站根据接收到的 X2网关的传输层地址信息,发起 X2连接建 立流程, 包括:
所述第二基站向所述 X2网关发送 X2建立请求消息, 所述 X2建立请求 消息携带: 所述第二基站的基站标识信息、 所述第二基站下的服务小区信息、 服务小区的相邻小区信息及所连接的 MME池信息; 所述 X2网关与所述第二基站完成 X2连接建立后,如判断出满足基站配 置更新消息的发送条件, 则分别向所述第一基站和所述第二基站发送基站配 置更新消息; 其中, 发送给所述第一基站的基站配置更新消息携带所述第二 基站的 X2接口应用层配置信息, 包括: 所述第二基站下的服务小区的信息、 该服务小区的相邻小区的信息及连接的 MME池的信息; 发送给所述第二基 站的基站配置更新消息中携带所述第一基站的 X2接口应用层配置信息, 包 括: 所述第一基站下的服务小区的信息、 该服务小区的相邻小区的信息及连 接的 MME池的信息。
8、 如权利要求 7所述的方法, 其中:
所述基站配置更新消息发送条件包括: 所述第一基站与所述第二基站为 相邻基站或所述第一基站与所述 X2网关已建立 X2连接。
9、 如权利要求 1所述的方法, 其中:
所述第二基站根据接收到的 X2网关的传输层地址信息,发起 X2连接建 立流程, 包括:
所述第二基站向所述 X2网关发送 X2建立请求消息, 所述 X2建立请求 消息携带: 所述第一基站的基站标识信息、 所述第二基站的基站标识信息、 所述第二基站下的服务小区信息、 该服务小区的相邻小区信息及所连接的 MME池信息。
10、 如权利要求 9所述的方法, 还包括:
所述 X2网关在接收到所述第二基站发来的所述 X2建立请求消息后,根 据所述 X2 建立请求消息中携带的所述第一基站的基站标识信息向所述第一 基站发送所述 X2建立请求消息。
11、 如权利要求 9所述的方法, 还包括:
所述 X2网关在接收到所述第二基站发来的所述 X2建立请求消息后,根 据所述 X2建立请求消息中携带的所述第一基站的基站标识信息和 /或所述第 二基站的基站标识信息, 相应地向所述第一基站和 /或所述第二基站发送基站 配置更新消息; 其中, 发送给所述第一基站的基站配置更新消息携带所述第 二基站的 X2接口应用层配置信息, 包括: 所述第二基站下的服务小区的信 息、 该服务小区的相邻小区的信息及连接的 MME池的信息; 发送给所述第 二基站的基站配置更新消息中携带所述第一基站的 X2接口应用层配置信息, 包括: 所述第一基站下的服务小区的信息、 该服务小区的相邻小区的信息及 连接的 MME池的信息。
12、 如权利要求 7~11中任意一项所述的方法, 还包括:
所述第一基站对接收到的所述第二基站的 X2接口应用层配置信息进行 存储;
所述第二基站对接收到的所述第一基站的 X2接口应用层配置信息进行 存储。
13、 一种传输层地址的通知系统, 包括第一基站和第二基站:
所述第一基站设置为: 将与其相连的 X2 网关的传输层地址信息发送给 第二基站; 其中, 所述第一基站为家庭基站;
所述第二基站设置为: 根据接收到的所述 X2 网关的传输层地址信息, 发起 X2连接建立流程。
14、 如权利要求 13所述的系统, 还包括: 移动管理实体(MME ) ; 所述第一基站是设置为以如下方式将与其相连的 X2 网关的传输层地址 信息发送给第二基站:
发起传输层地址发现过程, 向所述 MME发送基站配置传输消息, 所述 基站配置传输消息携带与所述第一基站相连的 X2网关的传输层地址信息; 所述 MME设置为:向所述第二基站发送 MME配置传输消息,所述 MME 配置传输消息携带与所述第一基站相连的所述 X2网关的传输层地址信息。
15、 如权利要求 13所述的系统, 还包括: 移动管理实体(MME ) ; 所述第二基站还设置为: 发起传输层地址发现过程, 向所述 MME发送 基站配置传输消息;
所述 MME设置为: 用于收到所述基站配置传输消息后, 向所述第一基 站发送 MME配置传输消息; 以及在收到所述第一基站发来的基站配置传输 消息后, 向所述第二基站发送 MME配置传输消息, 所述 MME配置传输消 息携带与所述第一基站相连的所述 X2网关的传输层地址信息; 所述第一基站是设置为以如下方式将与其相连的 X2 网关的传输层地址 信息发送给第二基站:
向所述 MME发送基站配置传输消息, 其中至少携带与所述第一基站相 连的所述 X2网关的传输层地址信息。
16、 如权利要求 14或 15所述的系统, 还包括家庭基站网关:
所述家庭基站网关设置为:在所述第一基站通过家庭基站网关作为 S1代 理与所述 MME建立 S1连接时, 传输所述第一基站与所述 MME之间传输的 所述基站配置传输消息及所述 MME配置传输消息。
17、 如权利要求 13所述的系统, 其中:
所述第二基站还设置为: 在接收到所述 X2 网关的传输层地址信息后, 若具有防火墙功能, 则将所述 X2 网关的传输层地址信息存储在本基站维护 的接入控制列表( ACL ) 中; 以及
在所述第二基站与所述 X2网关的通信过程中, 检查与其通信的所述 X2 网关的传输层地址是否在 ACL中; 若存在, 则允许所述 X2网关与本基站之 间的通信; 若不存在, 拒绝所述 X2网关与本基站之间的通信。
18、 如权利要求 13或 15所述的系统, 还包括: X2网关;
所述第二基站是设置为以如下方式根据接收到的 X2 网关的传输层地址 信息, 发起 X2连接建立流程:
向所述 X2网关发送 X2建立请求消息, 其中携带: 所述第二基站的基站 标识信息、 所述第二基站下的服务小区信息、 服务小区的相邻小区信息及所 连接的 MME池信息;
所述 X2网关设置为: 与所述第二基站完成 X2连接建立后, 如判断出满 足基站配置更新消息发送条件, 则分别向所述第一基站和所述第二基站发送 基站配置更新消息; 其中, 发送给所述第一基站的基站配置更新消息中携带 所述第二基站的 X2接口应用层配置信息, 包括: 所述第二基站下的服务小 区的信息、 该服务小区的相邻小区的信息及连接的 MME池的信息; 发送给 所述第二基站的基站配置更新消息中携带所述第一基站的 X2接口应用层配 置信息, 包括: 所述第一基站下的服务小区的信息、 该服务小区的相邻小区 的信息及连接的 MME池的信息。
19、 如权利要求 18所述的系统, 其中:
所述基站配置更新消息发送条件包括: 所述第一基站与所述第二基站为 相邻基站或所述第一基站与所述 X2网关已建立 X2连接。
20、 如权利要求 13所述的系统, 还包括: X2网关;
所述第二基站是设置为以如下方式根据接收到的 X2 网关的传输层地址 信息, 发起与所述 X2网关的 X2连接建立流程:
向所述 X2网关发送 X2建立请求消息, 其中携带: 所述第一基站的基站 标识信息、 所述第二基站的基站标识信息、 所述第二基站下的服务小区信息、 该服务小区的相邻小区信息及所连接的 MME池信息。
21、 如权利要求 20所述的系统, 其中:
所述 X2网关设置为:在接收到所述第二基站发来的所述 X2建立请求消 息后, 根据所述 X2 建立请求消息中携带的所述第一基站的基站标识信息向 所述第一基站发送所述 X2建立请求消息。
22、 如权利要求 20所述的系统, 其中:
所述 X2网关设置为:在接收到所述第二基站发来的所述 X2建立请求消 息后, 根据所述 X2建立请求消息中携带的所述第一基站的基站标识信息和 / 或所述第二基站的基站标识信息, 相应地向所述第一基站和 /或所述第二基站 发送基站配置更新消息; 其中, 发送给所述第一基站的基站配置更新消息中 携带所述第二基站的 X2接口应用层配置信息, 包括: 所述第二基站下的服 务小区的信息、 该服务小区的相邻小区的信息及连接的 MME池的信息; 发 送给所述第二基站的基站配置更新消息中携带所述第一基站的 X2接口应用 层配置信息, 包括: 所述第一基站下的服务小区的信息、 该服务小区的相邻 小区的信息及连接的 MME池的信息。
23、 如权利要求 18~22中任意一项所述的系统, 其中:
所述第一基站还设置为: 对接收到的所述第二基站的 X2接口应用层配 置信息进行存储;
所述第二基站还设置为: 对接收到的所述第一基站的 X2接口应用层配 置信息进行存储。
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