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CN104519594B - Connect method for building up and device, system - Google Patents

Connect method for building up and device, system Download PDF

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Publication number
CN104519594B
CN104519594B CN201310452568.2A CN201310452568A CN104519594B CN 104519594 B CN104519594 B CN 104519594B CN 201310452568 A CN201310452568 A CN 201310452568A CN 104519594 B CN104519594 B CN 104519594B
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CN
China
Prior art keywords
base station
home base
connection
message
gateway
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Expired - Fee Related
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CN201310452568.2A
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Chinese (zh)
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CN104519594A (en
Inventor
黄莹
高音
吴蕴璐
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ZTE Corp
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ZTE Corp
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Priority to CN201310452568.2A priority Critical patent/CN104519594B/en
Priority to PCT/CN2014/077320 priority patent/WO2014177075A1/en
Publication of CN104519594A publication Critical patent/CN104519594A/en
Application granted granted Critical
Publication of CN104519594B publication Critical patent/CN104519594B/en
Expired - Fee Related legal-status Critical Current
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

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

Abstract

The invention discloses a kind of connection method for building up, comprising: Home eNodeB receives instruction information, and initiates X2 connection according to the instruction information and establish；Alternatively, the address information for being used to establish X2 connection is sent to the adjacent base station of Home eNodeB by Home eNodeB；The adjacent base station of Home eNodeB is established according to the address information and is connect with the X2 of the Home eNodeB.The invention also discloses a kind of connections for realizing the above method to establish apparatus and system.Using technical solution of the present invention, it can not register or can not be established under X2 connection between the adjacent eNB and connected X2GW of HeNB, HeNB can establish direct X2 with the adjacent eNB of HeNB in time and connect, so that the X2 connection foundation between the adjacent eNB of HeNB and HeNB is gone on smoothly, the communication capacity that ensure that the adjacent eNB of HeNB, improves the service quality of communication system.

Description

Connection establishment method, device and system
Technical Field
The present invention relates to a connection establishment technology, and in particular, to a method, an apparatus, and a system for establishing a connection between base stations.
Background
The home base station is a small low-power base station and is mainly used in small-range indoor places such as homes, offices and the like. The home base station is connected to a core network of a mobile operator through wired access equipment such as an indoor cable, a DSL or an optical fiber, and provides an access service based on a wireless mobile communication network for a specific user. The method is an effective supplement to the existing network deployment, and can effectively improve the coverage of indoor voice and high-speed data services. Has many advantages, such as low cost, low power, simple access, plug and play, backhaul saving, compatibility with existing terminals, improved network coverage, etc.
A home base station in a Long Term Evolution (LTE) system defined by the Third Generation Partnership Project (3 GPP) standards organization is called henb (home enb). The functions supported by the HeNB are basically consistent with the eNB, and the processes between the HeNB and an Evolved Packet Core (EPC) network are basically consistent with those between the eNB and the EPC. The deployment of henbs is usually not planned by the mobile operator's network, and the coverage is small and numerous. To facilitate management and to support a larger number of henbs, under the E-utran (evolved utran) architecture, a new network element Home base station Gateway (HeNB GW, Home eNB Gateway) is introduced between the henbs and the S1 connection of the EPC. The HeNB may connect to a Mobility Management Entity (MME) as an S1 proxy through a HeNB GW. In LTE R10 release, only an X2 direct interface (i.e., an X2 interface established without other nodes such as proxy nodes) exists between henbs, and may be used for load balancing, handover optimization, information interaction, and the like, while an X2 interface is not supported between a macro base station eNB and a home base station HeNB.
In LTE R11, a new functional entity X2 gateway (X2 GW, X2GW is similar to HeNB GW, and for optional deployment, an X2 interface between eNB and HeNB, HeNB and HeNB can be proxied through X2GW, or a direct X2 interface is not established through X2 GW. HeNB can only connect with one X2 GW. HeNB can obtain its X2GW and HeNB GW address through HeMS after power-up, HeNB can register with X2GW after obtaining X2GW address, for X2GW to obtain eNB ID of HeNB and IP address information for establishing X2 connection.when HeNB finds a new neighboring (H) eNB cell and wants to establish X2 connection with the neighboring base station, X2 establishment request message can be sent directly to the connected X2GW, where eNB ID of target (H) eNB is carried, X2GW can save the target eNB ID and target eNB ID mapping information for establishing target eNB (H4642) connection to the target eNB (eNB) after it has received, if the target eNB ID and eNB ID are not saved in the target eNB (H4642) message, then the target eNB and the target eNB ID can be sent to the target eNB (H4642) establishment request message according to the target eNB ID message The eNB ID and the address mapping information for establishing the X2 connection, the X2 connection establishment procedure between the HeNB and the target eNB cannot be successfully completed. The problem can be solved by acquiring the eNB address through a TNL (network node B) process initiated by the HeNB, sending the eNB address to X2GW, and initiating the establishment of SCTP or X2 connection with a target eNB through X2 GW. Or by the HeNB sending the X2GW address to the eNB in its initiated TNL procedure, the eNB initiates registration with X2GW or X2 connection setup. However, if the eNB and the X2GW fail to register or establish a connection, the X2 connection between the HeNB and the newly found neighboring eNB cannot be successfully established.
Disclosure of Invention
In view of the above, embodiments of the present invention mainly aim to provide a method, an apparatus, and a system for establishing a connection, which enable a femtocell to smoothly establish an X2 connection.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:
a method of connection establishment, comprising:
and the home base station receives the indication information and initiates X2 connection establishment according to the indication information.
Preferably, the indication information includes at least one of the following information:
the X2 gateway of the femtocell fails to establish the X2 connection between the adjacent base stations of the femtocell;
or, the stream control transmission protocol SCTP connection between the X2 gateway of the home base station and the neighboring base station of the home base station fails to be established;
or the neighbor base station of the home base station fails to register with the X2 gateway of the home base station;
or, the X2 connection is directly established with the adjacent base station of the home base station.
Preferably, the home base station receives indication information, including:
the home base station receives the indication information through an X2 interface message;
or, the home base station receives the indication information through an S1 interface message.
Preferably, the home base station receives the indication information through an X2 interface message, including:
the home base station sends the address of the neighbor base station of the home base station to an X2 gateway of the home base station through a first X2 interface message;
and the X2 gateway of the home base station sends the indication information to the home base station through a second X2 interface message.
Preferably, before the X2 gateway of the home base station sends the indication information to the home base station through a second X2 interface message, the method further includes:
and the X2 gateway of the home base station determines that the SCTP connection or the X2 connection between the home base station and the adjacent base station of the home base station fails.
Preferably, the first X2 interface message includes: the X2 establishing request message, or base station configuration updating message, or X2 registration request message, or newly added X2 interface message;
the second X2 interface message includes: the X2 establishment failure message, or the base station configuration update confirmation message, or the base station configuration update failure message, or the X2 registration confirmation message, or the X2 registration failure message, or the new X2 interface message.
Preferably, the home base station receives the indication information through an S1 interface message, including:
the femtocell initiates TNL address discovery to a neighbor base station of the femtocell, and carries an address of an X2 gateway of the femtocell in an S1 interface message sent to the neighbor base station of the femtocell; wherein, the S1 interface message is a base station configuration transmission message;
the adjacent base station of the home base station sends the indication information to the home base station through an S1 interface message; wherein the S1 interface message is a base station configuration transmission message.
Preferably, before the neighboring base station of the home base station sends the indication information to the home base station through an S1 interface message, the method further includes:
the neighboring base station determines that the SCTP connection or the X2 connection established with the X2 gateway of the home base station fails, or performs the registration failure with the X2 gateway of the home base station.
Preferably, the initiating the X2 connection establishment according to the indication information includes:
the home base station initiates a direct X2 connection with neighboring base stations of the home base station.
A method of connection establishment, comprising:
the home base station sends address information for establishing X2 connection to a neighbor base station of the home base station;
and the adjacent base station of the home base station establishes X2 connection with the home base station according to the address information.
Preferably, the address information for establishing the X2 connection includes: an X2 transport layer address of the home base station, and an X2 transport layer address of an X2 gateway of the home base station.
Preferably, the sending, by the home base station, address information for establishing an X2 connection to a neighboring base station of the home base station includes:
the home base station initiates TNL address discovery, and carries the address information for establishing X2 connection in an S1 interface message sent to a neighbor base station of the home base station; the S1 interface message configures the transport message for the base station.
Preferably, the establishing, by the neighbor base station of the home base station, an X2 connection with the home base station according to the address information includes:
and initiating direct X2 connection establishment between the adjacent base station of the home base station and the home base station under the condition that SCTP connection or X2 connection between the adjacent base station of the home base station and an X2 gateway of the home base station fails or registration to the X2 gateway fails.
Preferably, before the neighboring base station of the home base station establishes an X2 connection with the home base station according to the address information, the method further includes:
and the adjacent base station of the home base station sends indication information to the home base station through an S1 interface message discovered by the TNL address.
Preferably, the establishing, by the neighbor base station of the home base station, an X2 connection with the home base station according to the address information includes:
and sending indication information to the home base station by an X2 interface message established by direct X2 connection between the neighboring base stations of the home base station and the home base station.
Preferably, the indication information includes at least one of the following information:
the X2 gateway of the femtocell fails to establish the X2 connection between the adjacent base stations of the femtocell;
or, the stream control transmission protocol SCTP connection between the X2 gateway of the home base station and the neighboring base station of the home base station fails to be established;
or the neighbor base station of the home base station fails to register with the X2 gateway of the home base station;
or, the X2 connection is directly established with the adjacent base station of the home base station.
A connection establishment apparatus comprising: a receiving unit and a building unit, wherein:
a receiving unit for receiving the indication information;
and the establishing unit is used for initiating the establishment of the X2 connection according to the indication information.
Preferably, the indication information includes at least one of the following information:
the X2 gateway of the femtocell fails to establish the X2 connection between the adjacent base stations of the femtocell;
or, the stream control transmission protocol SCTP connection between the X2 gateway of the home base station and the neighboring base station of the home base station fails to be established;
or the neighbor base station of the home base station fails to register with the X2 gateway of the home base station;
or, the X2 connection is directly established with the adjacent base station of the home base station.
Preferably, the receiving unit is further configured to:
receiving the indication information through an X2 interface message;
alternatively, the indication information is received through an S1 interface message.
Preferably, the receiving unit is further configured to:
transmitting the address of the neighbor base station of the home base station to an X2 gateway of the home base station through a first X2 interface message;
and receiving the indication information through a second X2 interface message sent by an X2 gateway of the home base station.
Preferably, the apparatus further comprises:
a sending unit, configured to initiate TNL address discovery to a neighboring base station of the femtocell, and send an S1 interface message; the S1 interface message carries the address of the X2 gateway of the home base station; wherein, the S1 interface message is a base station configuration transmission message;
the receiving unit is further configured to receive an S1 interface message sent by a neighboring base station of the femtocell, where the S1 interface message carries the indication information; wherein the S1 interface message is a base station configuration transmission message.
Preferably, the establishing unit is further configured to initiate a direct X2 connection with a neighboring base station of the home base station.
A connection establishment system comprising: a home base station and neighbor base stations of the home base station, wherein:
the home base station is used for sending address information for establishing X2 connection to a neighbor base station of the home base station;
and the adjacent base station of the home base station is used for establishing X2 connection with the home base station according to the address information.
Preferably, the femtocell is further configured to initiate TNL address discovery, and carry the address information for establishing the X2 connection in an S1 interface message sent to a neighboring base station of the femtocell; the S1 interface message configures the transport message for the base station.
Preferably, the neighboring base station of the femtocell is further configured to initiate establishment of a direct X2 connection with the femtocell when an SCTP connection or an X2 connection with an X2 gateway of the femtocell fails to be established, or when registration with the X2 gateway fails.
Preferably, the neighboring base station of the home base station is further configured to send an indication message to the home base station through an S1 interface message discovered by the TNL address; or sending indication information to the home base station through an X2 interface message established by direct X2 connection between the home base stations.
According to the technical scheme of the embodiment of the invention, the femtocell receives the indication information and initiates X2 connection establishment according to the indication information; or the home base station sends address information for establishing X2 connection to a neighbor base station of the home base station; and the adjacent base station of the home base station establishes X2 connection with the home base station according to the address information. According to the technical scheme of the embodiment of the invention, under the condition that the adjacent eNB and the connected X2GW cannot be registered or cannot be connected by the X2, the HeNB can be in time connected with the adjacent eNB by the direct X2, so that the connection establishment of the X2 between the HeNB and the adjacent eNB is smoothly carried out, the communication capability of the adjacent eNB is ensured, and the service quality of a communication system is improved.
Drawings
Fig. 1 is a schematic diagram of a home base station network architecture in an X2 gateway deployment situation;
fig. 2 is a flowchart illustrating a first embodiment of a connection establishment method according to the present invention;
fig. 3 is a flowchart illustrating a second embodiment of a connection establishment method according to the present invention;
fig. 4 is a flowchart illustrating a third embodiment of a connection establishment method according to the present invention;
FIG. 5 is a flowchart illustrating a fourth embodiment of a connection establishment method according to the present invention
Fig. 6 is a schematic structural diagram of a connection establishment apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
Fig. 1 is a schematic diagram of a home base station network architecture in the case of deployment of an X2 gateway, where as shown in fig. 1, an HeNB may serve as an S1 proxy to connect to an MME through an HeNB GW, and in the LTE R11 version, the HeNB may also serve as an X2 proxy to connect to an adjacent base station (a home base station or a macro base station) through an X2 gateway (X2 GW). Wherein the HeNB GW and X2GW are both optional deployments. As shown in fig. 1, eNB1 establishes a proxy X2 interface with HeNB2 and HeNB3 through X2GW, and establishes a proxy X2 interface between HeNB2 and HeNB3 through X2 GW. The eNB1 may also establish a direct X2 interface with the HeNB 1. It should be noted that the technical solution of the present invention is not limited to the lte enb system, but may also be applied to a 3G HNB system.
Method embodiment one
The embodiment describes a method for the HeNB to obtain the indication information and determine to initiate the direct X2 connection establishment through the X2 interface message. Fig. 2 is a flowchart illustrating a first embodiment of a connection establishment method according to the present invention, and as shown in fig. 2, the connection establishment method of this example includes the following steps:
step 201, after the UE in the HeNB cell measures a strong signal of an adjacent eNB cell, send a measurement report to the HeNB, where the measurement report may include PCI, ECGI, TAC, PLMN list, and the like. After obtaining the ECGI (PLMN ID + cell ID) of the adjacent cell, the HeNB judges that the cell is a macro cell through information such as PCI, ECGI or CSG ID and the like, and takes the first 20 bits of the cell ID as the eNB ID; if the cell is the femtocell cell, all 28 bits of the cell ID are taken as the eNB ID. After the HeNB obtains the eNB ID and TAI (PLMN + TAC) of the neighboring base station, it needs to initiate a TNL address discovery procedure to obtain its transport layer address for establishing the X2 connection.
In step 202, the HeNB sends an S1 interface base station configuration transfer message (eNB configuration transfer) to the MME, and in this embodiment, the HeNB establishes an S1 connection with the MME by using the HeNB GW as an S1 proxy, so the eNB configuration transfer message is first sent to the HeNB GW. The message contains the eNB ID and TAI of the source and target base stations, and an indication that the request type is a TNL address. And if the HeNB is not connected with the HeNB GW, the message is directly sent to the MME without passing through the HeNB GW.
In step 203, the HeNB GW receives the eNB configuration transfer message and then sends it to the MME.
In step 204, the MME receives the eNB configuration transfer message and then sends an MME configuration transfer message to the eNB. Wherein the MME can determine the target base station which sends the MME configuration transfer message according to eNBID and TAI of the target base station in the eNB configuration transfer message.
In step 205, after receiving the MME configuration transfer message, the eNB replies an eNBconfiguration transfer message to the MME, where the message includes the transport layer address of the eNB for establishing the X2 connection.
In step 206, after receiving the eNB configuration transfer message, the MME sends an MME configuration transfer message to the HeNB according to the eNB ID and TAI of the target base station, where the message includes a transport layer address of the eNB for establishing the X2 connection. Since the HeNB in this embodiment establishes an S1 connection with the MME by the HeNB GW as an S1 proxy, the MME configuration transfer message is first sent to the HeNB GW.
Step 207, the HeNB GW receives and sends the message to the HeNB, where the message includes the transport layer address of the eNB for establishing the X2 connection.
Step 208, after obtaining the address of the eNB through the TNL address discovery process, the HeNB sends an X2 establishment request message to the X2GW, where the message carries the X2 transport layer address of the eNB obtained through the TNL address discovery process to trigger the SCTP connection or X2 connection establishment between the X2GW and the eNB, and the message may also include X2 interface application layer configuration information of the HeNB, including the eNB ID of the HeNB, serving cell information under the HeNB, neighboring cell information of the serving cell, and MME pool information connected thereto.
Or after the HeNB obtains the address of the eNB through the TNL address discovery process, the HeNB sends an X2 base station configuration update message to the X2GW, where the message carries the X2 transport layer address of the eNB obtained through the TNL address discovery process, so as to trigger the SCTP connection or the X2 connection establishment between the X2GW and the eNB.
In step 209, after obtaining the address of the eNB newly found by the HeNB, the X2GW determines that the SCTP connection or the X2 connection cannot be established with the eNB. For example, if the SCTP connection or the X2 connection between the X2GW and the eNB fails to be established, the X2GW determines not to initiate the SCTP connection or the X2 connection between the eNB and the eNB according to the operator policy or the local configuration information.
Preferably, the X2GW may store the eNB information locally for subsequent X2 connection type determination. For example, if another HeNB under the X2GW discovers the eNB and sends an X2 establishment request message to the X2GW, where the eNB ID and/or address of the eNB are carried, the X2GW may directly reply to an X2 establishment failure message, where indication information is carried, to indicate that the X2GW cannot establish an SCTP connection or an X2 connection with the eNB, or indicate that the HeNB should establish a direct X2 connection with the eNB.
In step 210, if the X2GW receives the X2 establishment request message in step 208, it sends an X2 establishment failure message to the HeNB, where the message carries indication information. If the X2GW receives the X2 bs configuration update message in step 208, it sends an X2 bs configuration update confirmation or an X2 bs configuration update failure message to the HeNB, which carries indication information. The indication information is used for indicating that the X2GW cannot establish SCTP connection or X2 connection with the eNB or indicating that the HeNB should establish direct X2 connection with the eNB. The indication may be carried by the cause value cell in the X2 setup failure message or by a new cell.
In step 211, after receiving the indication information, the HeNB may determine whether to establish a direct connection with the eNB according to the indication information and the local configuration information. And if the direct X2 connection with the eNB is determined to be established, directly sending an X2 establishment request message to the eNB, wherein the X2 establishment request message carries the information of the serving cell, the adjacent cell and the MME pool of the HeNB. If it is determined that the direct X2 connection is not established with the eNB, the X2 establishment procedure is not initiated.
Step 212, the eNB replies an X2 setup response message to the HeNB, where the message carries the serving cell, neighboring cell, and MME pool information of the eNB. At this time, the X2 connection establishment procedure between the eNB and the HeNB is completed.
Method embodiment two
The embodiment describes a method for the HeNB to obtain indication information and determine to initiate direct X2 connection establishment through an X2 registration procedure. Fig. 3 is a flowchart illustrating a second embodiment of a connection establishment method according to the present invention, and as shown in fig. 3, the connection establishment method of this example includes the following steps:
step 301, after the UE in the HeNB cell measures a strong signal of the neighboring eNB cell, send a measurement report to the HeNB, where the measurement report may include PCI, ECGI, TAC, PLMN list, and the like. After obtaining the ECGI (PLMN ID + cell ID) of the adjacent cell, the HeNB judges that the cell is a macro cell through information such as PCI, ECGI or CSG ID and the like, and takes the first 20 bits of the cell ID as the eNB ID; if the cell is the femtocell cell, all 28 bits of the cell ID are taken as the eNB ID. After the HeNB obtains the eNB ID and TAI (PLMN + TAC) of the neighboring base station, it needs to initiate a TNL address discovery procedure to obtain its transport layer address for establishing the X2 connection.
In step 302, the HeNB sends an S1 interface base station configuration transfer message (eNB configuration transfer) to the MME, and in this embodiment, the HeNB establishes an S1 connection with the MME by using the HeNB GW as an S1 proxy, so the eNB configuration transfer message is first sent to the HeNB GW. The message contains the eNB ID and TAI of the source and target base stations, and an indication that the request type is a TNL address. And if the HeNB is not connected with the HeNB GW, the message is directly sent to the MME without passing through the HeNB GW.
In step 303, the HeNB GW receives the eNB configuration transfer message and then sends it to the MME.
In step 304, the MME receives the eNB configuration transfer message and then sends an MME configuration transfer message to the eNB. Wherein the MME can determine the target base station which sends the MME configuration transfer message according to eNBID and TAI of the target base station in the eNB configuration transfer message.
In step 305, after receiving the MME configuration transfer message, the eNB replies an eNBconfiguration transfer message to the MME, where the message includes the transport layer address of the eNB for establishing the X2 connection.
Step 306, after receiving the eNB configuration transfer message, the MME sends an MME configuration transfer message to the HeNB according to the eNB ID and TAI of the target base station therein, where the message includes a transport layer address of the eNB for establishing the X2 connection. Since the HeNB establishes an S1 connection with the MME by the HeNB GW as an S1 proxy in this embodiment, the MME configuration transfer message is first sent to the HeNB GW.
Step 307, the HeNB GW receives and sends the message to the HeNB, where the message includes the transport layer address of the eNB for establishing the X2 connection.
Step 308, after obtaining the address of the eNB through the TNL address discovery procedure, the HeNB sends an X2 registration message to the X2GW, where the X2 transport layer address of the eNB and the eNB ID of the eNB are carried, and registers for the eNB on the X2GW to trigger the SCTP connection or the X2 connection establishment between the X2GW and the eNB.
In step 309, after obtaining the address of the eNB newly found by the HeNB, the X2GW determines that the SCTP connection or the X2 connection cannot be established with the eNB. For example, if the SCTP connection or the X2 connection between the X2GW and the eNB fails to be established, the X2GW determines not to initiate the SCTP connection or the X2 connection between the eNB and the eNB according to the operator policy or the local configuration information.
Optionally, the X2GW may store the eNB information locally for subsequent X2 connection type determination. For example, if another HeNB under the X2GW discovers the eNB and sends an X2 establishment request message to the X2GW, where the eNB ID and/or address of the eNB are carried, the X2GW may directly reply to an X2 establishment failure message, where indication information is carried, to indicate that the X2GW cannot establish an SCTP connection or an X2 connection with the eNB, or indicate that the HeNB should establish a direct X2 connection with the eNB.
In step 310, the X2GW sends an X2 registration failure message to the HeNB, where the message carries indication information. The indication information is used for indicating that the X2GW cannot establish SCTP connection or X2 connection with the eNB or indicating that the HeNB should establish direct X2 connection with the eNB. This indication may be carried by the cause value information element in the X2 registration failure message, or by other information elements.
In step 311, after receiving the indication information, the HeNB may determine whether to establish a direct connection with the eNB according to the indication information and the local configuration information. And if the direct X2 connection with the eNB is determined to be established, directly sending an X2 establishment request message to the eNB, wherein the X2 establishment request message carries the information of the serving cell, the adjacent cell and the MME pool of the HeNB. If it is determined that the direct X2 connection is not established with the eNB, the X2 establishment procedure is not initiated.
In step 312, the eNB replies an X2 setup response message to the HeNB, where the eNB carries the information of the serving cell, the neighboring cell, and the MME pool of the eNB. At this time, the X2 connection establishment procedure between the eNB and the HeNB is completed.
Method embodiment three
This embodiment describes a method for the HeNB to obtain the indication information and determine to initiate the direct X2 connection establishment through the S1TNL address discovery procedure. Fig. 4 is a flowchart illustrating a third embodiment of a connection establishment method according to the present invention, and as shown in fig. 4, the connection establishment method of this example includes the following steps:
step 401, after the UE in the HeNB cell measures a strong signal of the neighboring eNB cell, send a measurement report to the HeNB, where the measurement report may include PCI, ECGI, TAC, PLMN list, and the like. After obtaining the ECGI (PLMN ID + cell ID) of the adjacent cell, the HeNB judges that the cell is a macro cell through information such as PCI, ECGI or CSG ID and the like, and takes the first 20 bits of the cell ID as the eNB ID; if the cell is the femtocell cell, all 28 bits of the cell ID are taken as the eNB ID. After the HeNB obtains the eNB ID and TAI (PLMN + TAC) of the neighboring base station, it needs to initiate a TNL address discovery procedure to obtain its transport layer address for establishing the X2 connection.
In step 402, the HeNB sends an S1 interface base station configuration transfer message (eNB configuration transfer) to the MME, and in this embodiment, the HeNB establishes an S1 connection with the MME by using the HeNB GW as an S1 proxy, so the eNB configuration transfer message is first sent to the HeNB GW. The message contains the X2 transport layer address of X2GW of the HeNB. The message also contains the eNB ID and TAI of the source and target base stations, and an indication that the request type is a TNL address. And if the HeNB is not connected with the HeNB GW, the message is directly sent to the MME without passing through the HeNB GW.
In step 403, the HeNB GW receives the eNB configuration transfer message and then sends it to the MME.
In step 404, the MME sends an MME configuration transfer message to the eNB after receiving the eNB configuration transfer message. Wherein the MME can determine the target base station which sends the MME configuration transfer message according to eNBID and TAI of the target base station in the eNB configuration transfer message.
In step 405, after obtaining the address of X2GW of the HeNB, the eNB determines that it is not able to establish an SCTP connection or an X2 connection with the X2GW or register with the X2 GW. For example, the SCTP connection or the X2 connection establishment or the X2 registration of the eNB with the X2GW fails, and the eNB determines not to initiate the SCTP connection or the X2 connection establishment or the X2 registration with the X2GW according to the operator policy or the local configuration information.
In step 406, the eNB replies an eNB configuration transfer message to the MME, where the message includes indication information. The indication information is used for indicating that the eNB cannot establish SCTP connection or X2 connection with X2GW or indicating that the HeNB should establish direct X2 connection with the eNB. The message also contains the transport layer address of the eNB used to establish the X2 connection.
Step 407, after receiving the eNB configuration transfer message, the MME sends an MME configuration transfer message to the HeNB according to the eNB ID and TAI of the target base station therein, where the message includes the indication information and the transport layer address of the eNB for establishing the X2 connection. Since the HeNB establishes an S1 connection with the MME by the HeNB GW as an S1 proxy in this embodiment, the MME configuration transfer message is first sent to the HeNB GW.
Step 408, the HeNB GW receives and sends the message to the HeNB, where the message includes the indication information and the transport layer address of the eNB for establishing the X2 connection.
In step 409, after receiving the indication information, the HeNB may determine whether to establish direct connection with the eNB according to the indication information and the local configuration information. And if the direct X2 connection with the eNB is determined to be established, directly sending an X2 establishment request message to the eNB, wherein the X2 establishment request message carries the information of the serving cell, the adjacent cell and the MME pool of the HeNB. If it is determined that the direct X2 connection is not established with the eNB, the X2 establishment procedure is not initiated.
Step 410, the eNB replies an X2 establishment response message to the HeNB, wherein the response message carries the information of the serving cell, the neighboring cell and the MME pool of the eNB. At this time, the X2 connection establishment procedure between the eNB and the HeNB is completed.
Method example four
This embodiment describes a method in which the HeNB transmits address information for establishing an X2 connection to a neighboring base station through a TNL address discovery procedure, and the neighboring base station establishes an X2 connection with the HeNB according to the information. Fig. 5 is a flowchart illustrating a fourth embodiment of a connection establishment method according to the present invention, and as shown in fig. 5, the connection establishment method of this example includes the following steps:
step 501, after the UE in the HeNB cell measures a strong signal of an adjacent eNB cell, send a measurement report to the HeNB, where the measurement report may include PCI, ECGI, TAC, PLMN list, and the like. After obtaining the ECGI (PLMN ID + cell ID) of the adjacent cell, the HeNB judges that the cell is a macro cell through information such as PCI, ECGI or CSG ID and the like, and takes the first 20 bits of the cell ID as the eNB ID; if the cell is the femtocell cell, all 28 bits of the cell ID are taken as the eNB ID. After the HeNB obtains the eNB ID and TAI (PLMN + TAC) of the neighboring base station, it needs to initiate a TNL address discovery procedure to obtain its transport layer address for establishing the X2 connection.
In step 502, the HeNB sends an S1 interface base station configuration transfer message (eNB configuration transfer) to the MME, and in this embodiment, the HeNB establishes an S1 connection with the MME by using the HeNB GW as an S1 proxy, so the eNB configuration transfer message is first sent to the HeNB GW. The message contains the X2 transport layer address of X2GW of the HeNB and the X2 transport layer address of the HeNB. The message also contains the eNB ID and TAI of the source and target base stations, and an indication that the request type is a TNL address. And if the HeNB is not connected with the HeNB GW, the message is directly sent to the MME without passing through the HeNB GW. Optionally, the message may further include an X2 connection establishment indication.
In step 503, the HeNB GW receives the eNB configuration transfer message and then sends it to the MME.
In step 504, the MME sends an MME configuration transfer message to the eNB after receiving the eNB configuration transfer message. Wherein the MME can determine the target base station which sends the MME configuration transfer message according to eNBID and TAI of the target base station in the eNB configuration transfer message.
In step 505, after obtaining the address of X2GW of the HeNB, the eNB determines that it is not able to establish SCTP connection or X2 connection with the X2GW or register with the X2 GW. For example, the SCTP connection or the X2 connection establishment or the X2 registration of the eNB with the X2GW fails, and the eNB determines not to initiate the SCTP connection or the X2 connection establishment or the X2 registration with the X2GW according to the operator policy or the local configuration information.
In step 506, the eNB replies an eNB configuration transfer message to the MME. Optionally, the message includes indication information. The indication information is used for indicating that the eNB cannot establish the SCTP connection or the X2 connection with the X2GW, cannot register with the X2GW, or indicates that the HeNB should establish the direct X2 connection with the eNB.
In step 507, after receiving the eNB configuration transfer message, the MME sends an MME configuration transfer message to the HeNB according to the eNB ID and TAI of the target base station therein. Since the HeNB establishes an S1 connection with the MME by the HeNB GW as an S1 proxy in this embodiment, the MME configuration transfer message is first sent to the HeNB GW.
In step 508, the HeNB GW receives and sends the message to the HeNB.
In step 509, if the eNB determines that the SCTP connection or the X2 connection cannot be established with the X2GW or the eNB cannot register with the X2GW, the eNB determines to establish a direct X2 connection with the HeNB and directly sends an X2 establishment request message to the HeNB, where the direct X2 establishment request message carries information of a serving cell, a neighboring cell, and an MME pool of the eNB. Optionally, the message includes indication information. The indication information is used for indicating that the eNB cannot establish SCTP connection or X2 connection with X2GW or indicating that the HeNB should establish direct X2 connection with the eNB. Here step 509 may be performed before or after step 506.
In step 510, the HeNB may determine whether to accept the direct connection establishment request of the eNB according to the local configuration information and/or the indication information, and if so, reply an X2 establishment response message to the eNB, where the establishment response message carries the serving cell, the neighboring cell, and the MMEpool information of the HeNB. At this time, the X2 connection establishment procedure between the eNB and the HeNB is completed. If not, replying an X2 establishment failure message to the eNB.
Fig. 6 is a schematic diagram of a configuration structure of a connection establishment apparatus according to an embodiment of the present invention, and as shown in fig. 6, the connection establishment apparatus according to the embodiment of the present invention includes a receiving unit 60 and an establishing unit 61, where:
a receiving unit 60 for receiving the indication information;
the establishing unit 61 is configured to initiate X2 connection establishment according to the indication information;
wherein the indication information comprises at least one of the following information:
the X2 gateway of the femtocell fails to establish the X2 connection between the adjacent base stations of the femtocell;
or, the stream control transmission protocol SCTP connection between the X2 gateway of the home base station and the neighboring base station of the home base station fails to be established;
or the neighbor base station of the home base station fails to register with the X2 gateway of the home base station;
or, the X2 connection is directly established with the adjacent base station of the home base station.
The receiving unit 60 is further configured to:
receiving the indication information through an X2 interface message;
alternatively, the indication information is received through an S1 interface message.
The receiving unit 60 is further configured to:
transmitting the address of the neighbor base station of the home base station to an X2 gateway of the home base station through a first X2 interface message;
and receiving the indication information through a second X2 interface message sent by an X2 gateway of the home base station.
In this embodiment of the present invention, the first X2 interface message includes: the X2 establishing request message, or base station configuration updating message, or X2 registration request message, or newly added X2 interface message;
the second X2 interface message includes: the X2 establishment failure message, or the base station configuration update confirmation message, or the base station configuration update failure message, or the X2 registration confirmation message, or the X2 registration failure message, or the new X2 interface message.
On the basis of the connection establishing apparatus shown in fig. 6, the connection establishing apparatus according to the embodiment of the present invention further includes:
a sending unit (not shown in fig. 6), configured to initiate TNL address discovery to a neighboring base station of the home base station, and send an S1 interface message; the S1 interface message carries the address of the X2 gateway of the home base station; wherein, the S1 interface message is a base station configuration transmission message;
the receiving unit 60 is further configured to receive an S1 interface message sent by a neighboring base station of the hnb, where the S1 interface message carries the indication information; wherein the S1 interface message is a base station configuration transmission message.
The establishing unit 61 is further configured to initiate a direct X2 connection with a neighboring base station of the home base station.
It should be understood by those skilled in the art that the functions of each processing unit in the connection establishment apparatus according to the embodiment of the present invention may be realized by an analog circuit that implements the functions described in the embodiment of the present invention, or by running software that executes the functions described in the embodiment of the present invention on an intelligent device, as will be understood by reference to the description related to the connection establishment method.
The embodiment of the present invention further describes a connection establishment system, a home base station and a neighboring base station of the home base station, wherein:
the home base station is used for sending address information for establishing X2 connection to a neighbor base station of the home base station;
and the adjacent base station of the home base station is used for establishing X2 connection with the home base station according to the address information.
The connection structure of the connection establishment system of the embodiment of the present invention can be seen in fig. 1.
The femtocell is further configured to initiate TNL address discovery, and carry the address information for establishing the X2 connection in an S1 interface message sent to a neighboring base station of the femtocell; the S1 interface message configures the transport message for the base station.
The neighbor base station of the femtocell is further configured to initiate establishment of direct X2 connection with the femtocell when SCTP connection is established with an X2 gateway of the femtocell or when X2 connection fails, or when registration with the X2 gateway fails.
The neighbor base station of the femtocell is also used for sending indication information to the femtocell through an S1 interface message discovered by the TNL address; or sending indication information to the home base station through an X2 interface message established by direct X2 connection between the home base stations.
Wherein the address information for establishing the X2 connection includes: an X2 transport layer address of a home base station, or an X2 transport layer address of an X2 gateway of the home base station.
It should be understood by those skilled in the art that the functions of each base station in the connection establishment system according to the embodiment of the present invention can be understood by referring to the foregoing description of the scheduling configuration method of the information processing method.
In the embodiments provided in the present invention, it should be understood that the disclosed method and apparatus can be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Alternatively, the integrated unit according to the embodiment of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.

Claims (22)

1. A method for connection establishment, the method comprising:
the femtocell receives the indication information, determines that the registration or connection establishment between the neighbor base station of the femtocell and the X2 gateway of the femtocell fails according to the indication information, and initiates X2 connection establishment; wherein,
the indication information includes at least one of the following information:
the X2 gateway of the femtocell fails to establish the X2 connection between the adjacent base stations of the femtocell;
or, the stream control transmission protocol SCTP connection between the X2 gateway of the home base station and the neighboring base station of the home base station fails to be established;
or the neighbor base station of the home base station fails to register with the X2 gateway of the home base station;
or, instructing to directly establish an X2 connection with a neighbor base station of the home base station;
the initiating connection establishment of the X2 according to the indication information includes: the home base station initiates a direct X2 connection with neighboring base stations of the home base station.
2. The method according to claim 1, wherein the home base station receives indication information, including:
the home base station receives the indication information through an X2 interface message;
or, the home base station receives the indication information through an S1 interface message.
3. The method according to claim 2, wherein the home base station receives the indication information through an X2 interface message, comprising:
the home base station sends the address of the neighbor base station of the home base station to an X2 gateway of the home base station through a first X2 interface message;
and the X2 gateway of the home base station sends the indication information to the home base station through a second X2 interface message.
4. The method as claimed in claim 3, wherein before the X2 gateway of the home base station transmits the indication information to the home base station through a second X2 interface message, the method further comprises:
and the X2 gateway of the home base station determines that the SCTP connection or the X2 connection between the home base station and the adjacent base station of the home base station fails.
5. The method of claim 3, wherein the first X2 interface message comprises: the X2 establishing request message, or base station configuration updating message, or X2 registration request message, or newly added X2 interface message;
the second X2 interface message includes: the X2 establishment failure message, or the base station configuration update confirmation message, or the base station configuration update failure message, or the X2 registration confirmation message, or the X2 registration failure message, or the new X2 interface message.
6. The method according to claim 2, wherein the home base station receives the indication information through an S1 interface message, comprising:
the femtocell initiates TNL address discovery to a neighbor base station of the femtocell, and carries an address of an X2 gateway of the femtocell in an S1 interface message sent to the neighbor base station of the femtocell; wherein, the S1 interface message is a base station configuration transmission message;
the adjacent base station of the home base station sends the indication information to the home base station through an S1 interface message; wherein the S1 interface message is a base station configuration transmission message.
7. The method according to claim 2, wherein before the neighbor base station of the home base station transmits the indication information to the home base station through an S1 interface message, the method further comprises:
the neighbor base station determines that the SCTP connection or the X2 connection established with the X2 gateway of the home base station fails, or the registration with the X2 gateway of the home base station fails.
8. A method for connection establishment, the method comprising:
the home base station sends address information for establishing X2 connection to a neighbor base station of the home base station;
and when the neighbor base station of the home base station determines that the registration or connection establishment between the neighbor base station and the X2 gateway of the home base station fails, establishing direct X2 connection with the home base station according to the address information.
9. The method of claim 8, wherein the address information for establishing the X2 connection comprises: an X2 transport layer address of the home base station, and an X2 transport layer address of an X2 gateway of the home base station.
10. The method according to claim 8, wherein the home base station sends address information for establishing an X2 connection to a neighboring base station of the home base station, and the method comprises:
the home base station initiates TNL address discovery, and carries the address information for establishing X2 connection in an S1 interface message sent to a neighbor base station of the home base station; the S1 interface message configures the transport message for the base station.
11. The method according to claim 10, wherein in case that the neighbor base station of the femtocell fails to establish SCTP connection or X2 connection with the X2 gateway of the femtocell, or fails to register with the X2 gateway, initiating direct X2 connection establishment with the femtocell.
12. The method according to claim 10, wherein before the neighbor base station of the home base station establishes the direct X2 connection with the home base station according to the address information, the method further comprises:
and the adjacent base station of the home base station sends indication information to the home base station through an S1 interface message discovered by the TNL address.
13. The method according to claim 10, wherein when the neighbor base station of the home base station establishes a direct X2 connection with the home base station according to the address information, the method further comprises:
and sending indication information to the home base station by an X2 interface message established by direct X2 connection between the neighboring base stations of the home base station and the home base station.
14. The method according to claim 12 or 13, wherein the indication information comprises at least one of the following information:
the X2 gateway of the femtocell fails to establish the X2 connection between the adjacent base stations of the femtocell;
or, the stream control transmission protocol SCTP connection between the X2 gateway of the home base station and the neighboring base station of the home base station fails to be established;
or the neighbor base station of the home base station fails to register with the X2 gateway of the home base station;
or, the X2 connection is directly established with the adjacent base station of the home base station.
15. A connection set-up device, characterized in that it comprises: a receiving unit and a building unit, wherein:
a receiving unit, configured to receive indication information, and determine, according to the indication information, that registration or connection establishment between a neighboring base station of a home base station and an X2 gateway of the home base station fails;
the establishing unit is used for initiating the establishment of the X2 connection according to the indication information; wherein,
the indication information includes at least one of the following information:
the X2 gateway of the femtocell fails to establish the X2 connection between the adjacent base stations of the femtocell;
or, the stream control transmission protocol SCTP connection between the X2 gateway of the home base station and the neighboring base station of the home base station fails to be established;
or the neighbor base station of the home base station fails to register with the X2 gateway of the home base station;
or, instructing to directly establish an X2 connection with a neighbor base station of the home base station;
the establishing unit is further configured to initiate a direct X2 connection with a neighboring base station of the home base station.
16. The apparatus of claim 15, wherein the receiving unit is further configured to:
receiving the indication information through an X2 interface message;
alternatively, the indication information is received through an S1 interface message.
17. The apparatus of claim 16, wherein the receiving unit is further configured to:
transmitting the address of the neighbor base station of the home base station to an X2 gateway of the home base station through a first X2 interface message;
and receiving the indication information through a second X2 interface message sent by an X2 gateway of the home base station.
18. The apparatus of claim 16, further comprising:
a sending unit, configured to initiate TNL address discovery to a neighboring base station of the femtocell, and send an S1 interface message; the S1 interface message carries the address of the X2 gateway of the home base station; wherein, the S1 interface message is a base station configuration transmission message;
the receiving unit is further configured to receive an S1 interface message sent by a neighboring base station of the femtocell, where the S1 interface message carries the indication information; wherein the S1 interface message is a base station configuration transmission message.
19. A connection establishment system, characterized in that the system comprises: a home base station and neighbor base stations of the home base station, wherein:
the home base station is used for sending address information for establishing X2 connection to a neighbor base station of the home base station;
and the neighbor base station of the femtocell is used for establishing direct X2 connection with the femtocell according to the address information when the registration or connection establishment between the neighbor base station and the X2 gateway of the femtocell is determined to be failed.
20. The system according to claim 19, wherein said femtocell is further configured to initiate TNL address discovery, and carry said address information for establishing X2 connection in an S1 interface message sent to a neighboring base station of said femtocell; the S1 interface message configures the transport message for the base station.
21. The system according to claim 19, wherein the neighboring base station of the home base station is further configured to initiate direct X2 connection establishment with the home base station when SCTP connection or X2 connection establishment with an X2 gateway of the home base station fails, or registration with the X2 gateway fails.
22. The system according to claim 21, wherein the neighboring base station of the home base station is further configured to send an indication message to the home base station through an S1 interface message discovered by TNL address; or sending indication information to the home base station through an X2 interface message established by direct X2 connection between the home base stations.
CN201310452568.2A 2013-09-27 2013-09-27 Connect method for building up and device, system Expired - Fee Related CN104519594B (en)

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CN104902501A (en) * 2015-05-28 2015-09-09 大唐移动通信设备有限公司 Method for managing links among base stations and base station
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