WO2017118249A1 - 一种核心网重定位、核心网选择的方法和通信设备 - Google Patents

一种核心网重定位、核心网选择的方法和通信设备 Download PDF

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Publication number
WO2017118249A1
WO2017118249A1 PCT/CN2016/108266 CN2016108266W WO2017118249A1 WO 2017118249 A1 WO2017118249 A1 WO 2017118249A1 CN 2016108266 W CN2016108266 W CN 2016108266W WO 2017118249 A1 WO2017118249 A1 WO 2017118249A1
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Prior art keywords
core network
base station
iot
information
network device
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PCT/CN2016/108266
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English (en)
French (fr)
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高音
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中兴通讯股份有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H04W36/38—Reselection control by fixed network equipment
    • H04W36/385—Reselection control by fixed network equipment of the core network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service

Definitions

  • This application relates to, but is not limited to, the field of mobile communications.
  • wireless communication network operators can use home base stations. It is converted into a wireless broadband access device that is easy to carry and install, and is provided for use by the user in a home or office.
  • the home base station is a small, low-power home 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 through a cable, a DSL (Digital Subscriber Loop) or a fiber-optic access device such as an optical fiber to provide an access service based on the wireless mobile communication network for a specific user. 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
  • HNB Home NodeB
  • Node B the base station in the LTE (Long Term Evolution) system defined by the Third Generation Partnership Projects (3GPP) standards organization
  • eNB evolved base station
  • EPC Evolved Packet Core
  • HeNB GW Home eNB Gateway, HeNB gateway
  • MME Mobility Management Entity
  • a dedicated core network for a special purpose terminal can be selected through a dedicated core network (DECOR), and the attribute information of the terminal is stored in a home subscriber server (HSS: Home Subscriber Server).
  • HSS Home Subscriber Server
  • the appropriate dedicated core network can be selected for the terminal, and the dedicated core network is identified by the dedicated group flag.
  • the core network sends a reroute message to the home base station, and the home base station passes the local non-access stratum node selection function (NNSF: NAS node selection Function), and the relocation message.
  • NSF non-access stratum node selection Function
  • NB-IOT core network selection for NB-IOT users
  • the NB-IOT user accesses the relay node, and the RN connects to the core network through the donor base station (Donor eNB, DeNB), and how to implement the NB in the process of relocation of the core network.
  • the core network selection of IOT users is also a problem that needs to be solved.
  • a core network relocation method includes:
  • the home base station gateway or the host base station After receiving the relocation message sent by the core network device, the home base station gateway or the host base station sends a core network relocation indication message to the home base station or the relay node;
  • the home base station gateway or the host base station After receiving the initial direct transmission message of the user equipment UE sent by the home base station or the relay node, the home base station gateway or the host base station routes the initial direct transmission message of the UE to the core network device supporting the NB-IOT;
  • the core network device supporting the NB-IOT is a new core network device selected by the home base station gateway or the host base station for the NB-IOT user.
  • a communication device includes a core network relocation device, and the core network relocation device includes:
  • the first signaling processing module is configured to: after receiving the relocation message sent by the core network device, send a core network relocation indication message to the home base station or the relay node;
  • the second signaling processing module is configured to: after receiving the initial direct transmission message sent by the home base station or the relay node, routing the initial direct transmission message of the UE to a core network device supporting the NB-IOT;
  • the non-access stratum node selection function NNSF module is configured to: execute the NNSF, and select the core network device supporting the NB-IOT;
  • the communication device is a home base station gateway or a host base station.
  • a method for narrowband IoT NB-IOT user core network selection comprising:
  • the home base station gateway or the host base station acquires capability indication information of the connected core network device, where the capability indication information of the core network device includes support information of the core network device to the NB-IOT;
  • the home base station gateway or the host base station After receiving the initial direct transmission message of the NB-IOT user sent by the home base station or the relay node, the home base station gateway or the host base station is the NB-IOT according to the support information of the core network device to the NB-IOT.
  • the user selects a core network device that supports NB-IOT;
  • the home base station gateway or the donor base station routes the initial direct transmission message of the UE to the core network device supporting the NB-IOT.
  • a communication device includes a core network relocation device, and the core network relocation device includes:
  • the information obtaining module is configured to: obtain capability indication information of the connected core network device, where The capability indication information of the core network device includes the support information of the core network device to the NB-IOT;
  • the core network selection module is configured to: after receiving the initial direct transmission message of the NB-IOT user sent by the home base station or the relay node, according to the support information of the core network device to the NB-IOT, the NB- IOT users choose core network devices that support NB-IOT;
  • a routing module configured to: route the initial direct transmission message of the UE to the core network device supporting the NB-IOT;
  • the communication device is a home base station gateway or a host base station.
  • the above solution implements the NB-IOT user core network selection function under the home base station gateway, which can meet the use of the narrowband Internet of Things technology in the home base station gateway scenario, improve network efficiency, and avoid a large number of special-purpose user equipments existing to the common users in the network. Impact.
  • the home base station gateway can reduce the number of interfaces between the home base station and the core network, and reduce the processing load of the core network. Achieve targeted management of a large number of low-power nodes.
  • FIG. 1 is a flowchart of a method for a gateway side of a home base station according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for a home base station side according to an embodiment of the present invention
  • FIG. 3 is a block diagram of a home base station gateway according to an embodiment of the present invention.
  • FIG. 4 is a block diagram of a home base station according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a network structure of a home base station according to an application example of the present invention.
  • FIG. 6 is a signaling flowchart of a core network relocation of an application example of the present invention.
  • FIG. 7 is a signaling flowchart of an application example second core network relocation according to the present invention.
  • FIG. 9 is a flowchart of a method for a gateway side of a home base station according to Embodiment 2 of the present invention.
  • FIG. 10 is a block diagram of a home base station gateway according to Embodiment 2 of the present invention.
  • FIG. 11 is a signaling flow diagram of an application example four narrowband IoT user core network selection according to the present invention.
  • This embodiment uses the DECOR technology to implement the selection of the NB-IOT user core network.
  • the home base station gateway acts as an interface proxy between the home base station and the core network, and is respectively connected to the home base station and the core network.
  • the method for relocating a core network in this embodiment includes:
  • Step 110 After receiving the relocation message sent by the core network device, the home base station gateway sends a core network relocation indication message to the home base station.
  • the core network device After the UE supporting the NB-IOT accesses the core network for the first time, the core network device obtains the special-purpose attribute information of the UE, and determines to relocate the UE to the dedicated core network when selecting a core network suitable for serving the NB-IOT user.
  • the core network device initiates a relocation process, and sends a relocation message to the home base station gateway (such as the HeNB gateway and the HNB gateway), where the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, and the UE's
  • the first UE initial direct transmission message, the core network relocation information, and the UE's globally unique Temporary UE Identity (GUTI) information.
  • the core network relocation information may be a C-SGN group flag or a specified one or more C-SGN flag information such as a C-SGN identifier or a name.
  • the core network relocation indication message delivered to the home base station refers to a message used to indicate relocation of the home base station, and is not a limitation on the specific name of the message.
  • the content of the message may be the same as the relocation message, that is, the home base station gateway forwards the received relocation message as a core network relocation indication message; the core network relocation indication message may also be different from the relocation message, for example, After completing the NNSF, the flag information of the selected core network device supporting the NB-IOT is carried in the core.
  • the heart network relocation indication message is carried in the core.
  • Step 120 After receiving the initial direct transmission message sent by the home base station, the home base station gateway routes the initial direct transmission message of the UE to a core network device supporting the NB-IOT; wherein the supporting NB-IOT
  • the core network device is a new core network device selected by the home base station gateway for the NB-IOT user.
  • the home base station gateway selects a service core network device for the NB-IOT user, and may retransmit the message transmitted by the core network device or the initial direct transmission message sent by the home base station when the core network relocates.
  • the UE initially transmits a message directly to trigger the implementation of the local NNSF.
  • the above message carries the NB-IOT user-specific C-SGN related information (ie, the above-mentioned core network relocation information) and/or the user's GUTI information to execute the NNSF.
  • the signaling message related to the user of the S1 interface needs to be processed and forwarded by the home base station gateway.
  • the home base station gateway may select the core network device supporting the NB-IOT in one of the following manners:
  • the home base station gateway After receiving the relocation message, the home base station gateway performs local NNSF according to the core network relocation information carried in the relocation message and/or the GUTI information of the UE, and selects the core network device supporting the NB-IOT. And save. In this way, after receiving the initial direct transmission message of the UE, the home base station gateway routes the initial direct transmission message of the UE to the NB-IOT by searching for the saved core network device supporting the NB-IOT. Core network equipment.
  • the home base station gateway After receiving the relocation message, the home base station gateway performs local NNSF according to the core network relocation information carried in the relocation message and/or the GUTI information of the UE, and selects the core network device supporting the NB-IOT.
  • the flag information of the core network device supporting the NB-IOT is carried in the core network relocation indication message sent to the home base station.
  • the initial initial transmission message received by the home base station gateway carries the flag information, and the home base station gateway initializes the UE according to the flag information in the initial direct transmission message of the UE.
  • the message is routed to the core network device supporting the NB-IOT.
  • the flag information of the core network device supporting the NB-IOT may include the support.
  • the globally unique MME identity of the core network device of the NB-IOT, the identity of the core network device supporting the NB-IOT, and the name of the core network device supporting the NB-IOT One or more.
  • the home base station gateway After receiving the relocation message sent by the core network device, the home base station gateway carries the core network relocation information in the relocation message and/or the GUTI information of the UE in the core network relocation indication message sent to the home base station. . After receiving the initial direct transmission message of the UE, the home base station gateway performs local NNSF according to the core network relocation information carried in the initial direct transmission message of the UE and/or the GUTI information of the UE, and selects the NNSF. The core network device supporting the NB-IOT, and routing the initial direct transmission message of the UE to the core network device supporting the NB-IOT.
  • the method performed by the home base station side in this embodiment includes:
  • Step 210 The home base station receives a core network relocation indication message delivered by the home base station gateway.
  • the core network relocation indication message carries one or more of the following messages: the S1 interface uniquely identifies the UE's flag information, the UE's first UE initial direct transmission message, and the core network relocation information. And the GUTI information of the UE; or, the core network relocation indication message carries one or more of the following messages: the S1 interface uniquely identifies the UE's flag information, and the first UE of the UE initiates a direct transmission message, The flag information of the core network device supporting the NB-IOT and the GUTI information of the UE.
  • Step 220 After receiving the core network relocation indication message, the home base station sends a UE initial direct transmission message to the home base station gateway.
  • the initial direct transmission message of the UE carries one or more of the following messages: the S1 interface uniquely identifies the UE's flag information, and is not connected. Inbound Protocol Data Unit (NAS PDU), core network relocation information, and UE's GUTI information.
  • NAS PDU Inbound Protocol Data Unit
  • the core network relocation indication message carries the flag information of the core network device supporting the NB-IOT
  • the initial direct transmission message of the UE carries one or more of the following messages: the S1 interface uniquely identifies the identifier information of the UE.
  • the embodiment also provides a home base station gateway, including a core network relocation device.
  • the core network relocation device includes:
  • the first signaling processing module 10 is configured to: after receiving the relocation message sent by the core network device, send a core network relocation indication message to the home base station or the relay node;
  • the second signaling processing module 20 is configured to: after receiving the initial direct transmission message sent by the home base station or the relay node, routing the initial direct transmission message of the UE to the core network device supporting the NB-IOT;
  • the non-access stratum node selection function NNSF module 30 is configured to: execute the NNSF, and select the core network device supporting the NB-IOT;
  • the NNSF module is configured to: according to the core network relocation information carried in the relocation message and/or the global unique temporary UE identifier GUTI information of the UE, after the first signaling processing module receives the relocation message, Performing the NNSF locally, selecting the core network device supporting the NB-IOT and saving it;
  • the second signaling processing module routes the initial direct transmission message of the UE to the core network device supporting the NB-IOT, including: after receiving the initial direct transmission message of the UE, searching and saving from the NNSF module
  • the core network device supporting the NB-IOT routes the initial direct transmission message of the UE to the core network device supporting the NB-IOT.
  • the NNSF module performs the NNSF locally according to the core network relocation information carried in the relocation message and/or the GUTI information of the UE after the first signaling processing module receives the relocation message, and selects The core network device supporting the NB-IOT;
  • the core network relocation indication message sent by the second signaling processing module to the home base station or the relay node carries the flag information of the core network device supporting the NB-IOT; and receives the initial direct transmission message of the UE. And then, according to the flag information carried in the initial direct transmission message of the UE, routing the initial direct transmission message of the UE to the core network device supporting the NB-IOT;
  • the flag information of the core network device supporting the NB-IOT includes the support NB-IOT
  • the global unique mobility management entity of the core network device identifies one or more of GUMMEI, the identity of the core network device supporting the NB-IOT, and the name of the core network device supporting the NB-IOT.
  • the first signaling processing module After receiving the relocation message sent by the core network device, the first signaling processing module carries the core network relocation information and/or the GUTI information of the UE in the relocation message to the home base station or the relay node.
  • the NNSF module is configured to: according to the core network relocation information carried in the initial direct transmission message of the UE or locally saved, after the second signaling processing module receives the initial direct transmission message of the UE, and/or the UE
  • the GUTI information locally executes the NNSF and selects the core network device supporting the NB-IOT.
  • the embodiment also provides a home base station gateway, including a core network relocation device.
  • the core network relocation device includes:
  • the message receiving module 50 is configured to: receive a core network relocation indication message delivered by the home base station gateway or the host base station;
  • the message sending module 60 is configured to: after receiving the core network relocation indication message, resend the initial initial direct message of the UE to the home base station gateway or the donor base station;
  • the core network relocation indication message carries one or more of the following messages:
  • the S1 interface uniquely identifies the flag information of the UE
  • the first UE of the UE initiates a direct transmission message
  • Core network relocation information or flag information of the core network device supporting the NB-IOT
  • the initial initial transmission message of the UE carries one or more of the following messages:
  • the S1 interface uniquely identifies the flag information of the UE
  • Non-access stratum protocol data unit
  • Core network relocation information or flag information of the core network device supporting the NB-IOT
  • the method of this embodiment is applicable to an LTE system and a 3G system.
  • the core network device refers to the MME, and may also refer to the C-SGN that supports the NB-IOT user.
  • the core network device refers to the SGSN.
  • the host base station is used as an interface proxy between the relay node and the core network, and is connected to the relay node and the core network, and the core network relocation is implemented by applying the method in this embodiment.
  • the DeNB the DeNB scenario.
  • the DeNB and the home base station gateway maintain the same processing criteria, and the relay node and the home base station maintain the same processing criteria. That is to say, the home base station gateway in the embodiment is replaced with a home base station, and the home base station is replaced with a relay node.
  • the example home base station gateway is used as an interface proxy between the home base station and the core network, and is respectively connected to the home base station and the core network.
  • the schematic diagram of the home base station network structure is shown in FIG. 5 .
  • the home base station gateway performs the core network selection locally after receiving the relocation message, and does not notify the home base station of the core network selection result.
  • the specific steps of this example are as follows:
  • Step 1 The UE type information acquired by the core network device is an NB-IOT user, and it is decided to select a core network device supporting the NB-IOT for the UE.
  • the core network device sends a relocation message to the home base station gateway; the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the UE's first UE initial direct transmission message, and the core network relocation information (C-SGN group flag, or specified one or more C-SGN flag information such as C-SGN ID or name), GUTI information of the UE;
  • Step 2 After receiving the relocation message, the home base station gateway implements the NNSF function locally according to the core network relocation information and/or the GUTI information of the UE, and selects a new core network device that supports the NB-IOT for the UE. , save the selected core network equipment supporting NB-IOT;
  • Step 3 The home base station gateway sends a core network relocation indication message to the home base station, where the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, and the first UE of the UE initiates a direct transmission message.
  • Core network relocation information C-SGN group flag or specify one or more C-SGN flag information, such as C-SGN ID or name), UE's GUTI information;
  • Step 4 After receiving the core network relocation indication message, the home base station re-initiates the initial direct transmission message of the UE, where the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, and the core network weight. Positioning information (C-SGN group flag or flag information specifying one or more C-SGNs, such as C-SGN ID or name), GUTI information of the UE;
  • Step 5 After receiving the initial direct transmission message sent by the home base station, the home base station gateway searches for the saved core network device supporting the NB-IOT, and routes the message to the core network device supporting the NB-IOT.
  • the home base station gateway may determine, according to the information in the initial direct transmission message of the UE or the local record, that the received initial direct transmission message of the UE is the initial direct transmission message of the UE sent by the core network relocation.
  • the home base station gateway performs core network selection locally after receiving the relocation message, and notifies the home network base station of the core network selection result.
  • the steps of this example include:
  • Step 1 The UE type information acquired by the core network device is an NB-IOT user, and it is decided to select a core network device supporting the NB-IOT for the UE.
  • the core network device sends a relocation message to the home base station gateway, where the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the UE's first UE initial direct transmission message, and the core network relocation information (C-SGN group flag, or designation of one or more C-SGN flag information such as C-SGN ID or name), GUTI information of the UE;
  • Step 2 After receiving the relocation message, the home base station gateway implements the NNSF function locally according to the carried core network relocation information and/or the UE's GUTI information, and selects a new core network device that supports the NB-IOT for the UE to access;
  • Step 3 The home base station gateway sends a core network relocation indication message to the home base station, where the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, and the first UE of the UE initiates a direct transmission message.
  • the flag information of the core network device supporting the NB-IOT selected by the home base station gateway for the UE (such as the GUMMEI of the selected C-SGN, or the C-SGN ID, or the name of the C-SGN);
  • Step 4 After receiving the core network relocation indication message, the home base station re-initiates the initial direct transmission of the UE. a message, the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, and the home base station gateway selects the flag information of the NB-IOT-enabled core network device selected by the UE (if selected GUMMEI of C-SGN, or C-SGN ID, or the name of C-SGN);
  • Step 5 After receiving the initial direct transmission message sent by the home base station, the home base station gateway routes the message to the core network device supporting the NB-IOT according to the flag information of the core network device carried in the initial direct transmission message of the UE. .
  • the home base station gateway after receiving the initial direct transmission message sent by the UE by the home base station in the relocation process, the home base station gateway performs core network selection locally. As shown in Figure 8, the steps of this example include:
  • Step 1 The UE type information acquired by the core network device is an NB-IOT user, and it is decided to select a core network device supporting the NB-IOT for the UE.
  • the core network device sends a relocation message to the home base station gateway, where the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the UE's first UE initial direct transmission message, and the core network relocation information (C-SGN group flag, or designation of one or more C-SGN flag information such as C-SGN ID or name), GUTI information of the UE;
  • Step 2 After receiving the message, the home base station gateway performs local processing, such as saving core network selection related information, core network relocation information, and UE GUTI information.
  • the home base station gateway then forwards the core network relocation indication message to the home base station, where the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, and the first UE of the UE initially transmits the direct message, and the core network weight Location information, GUTI information of the UE.
  • the home base station gateway may directly forward the core network relocation indication message to the home base station;
  • Step 3 After receiving the core network relocation indication message, the home base station re-initiates the initial direct transmission message of the UE, where the message includes one or more of the following information: the S1 interface uniquely identifies the UE's flag information, the NAS PDU, and the core network weight. Positioning information (C-SGN group flag or flag information specifying one or more C-SGNs, such as C-SGN ID or name), GUTI information of the UE;
  • Step 4 After receiving the initial direct transmission message sent by the home base station, the home base station gateway implements the NNSF function locally according to the core network relocation information carried in the message and/or the GUTI information of the UE. Select a new core network device access that supports NB-IOT for the UE.
  • the home base station gateway may also implement the NNSF function according to the saved core network relocation information and/or the UE's GUTI information.
  • Step 5 The home base station gateway sends the initial direct transmission message of the UE received in step 4 to the core network device supporting the NB-IOT.
  • the NB-IOT user needs to indicate the user type or capability to the home base station gateway by using the initial direct transmission message of the UE, and the home base station gateway also needs to obtain which core network nodes can support the NB-IOT user.
  • the home base station gateway can obtain the capability indication information of the C-SGN from the connected core network device through the S1 interface, and obtain the current UE type or capability information from the home base station, and select a suitable core network node for the NB-IOT user.
  • the method for selecting the core network of the NB-IOT user in this embodiment is as shown in FIG. 9, and includes:
  • Step 310 The home base station gateway acquires capability indication information of the connected core network device, where the capability indication information of the core network device includes support information of the core network device to the NB-IOT.
  • the home base station gateway can obtain the capability indication information of the connected core network device by using the S1 interface setup response message or the mobility management entity MME configuration update message.
  • Step 320 After receiving the initial direct transmission message of the NB-IOT user sent by the home base station, the home base station gateway selects the support NB for the NB-IOT user according to the support information of the core network device to the NB-IOT. -IOT core network equipment;
  • the home base station gateway may obtain the support information of the NB-IOT user for the NB-IOT from the initial direct transmission message of the UE, and match the support information of the core network device to the NB-IOT, and the NB is the NB.
  • the IOT user selects the matching core network device.
  • the support information for the NB-IOT includes one or more of the following information: whether the information of the NB-IOT is supported, whether the information of the control plane implementing the data transmission scheme (SOL2) in the NB-IOT is supported, and whether Supports information on the user plane implementation data transmission scheme (SOL18) in NB-IOT.
  • the home base station gateway supports NB-IOT, or more granular, supports SOL2 and/or SOL18 in NB-IOT; the matching core network devices also support NB-IOT, or more granular, and also support SOL2 in NB-IOT. / or SOL18.
  • the home base station gateway may obtain the NB-IOT user support information for the NB-IOT according to one or more of the following information in the UE initial direct transmission message: the global unique mobility management entity identifier of the UE, the GUMMEI information, and the UE Temporary UE Identification Number (S-TMSI: SAE-Temporary Mobile Subscriber Identit) information, type information of the UE, and capability information of the UE.
  • S-TMSI SAE-Temporary Mobile Subscriber Identit
  • Step 330 The home base station gateway routes the initial direct transmission message of the UE to the core network device supporting the NB-IOT.
  • the embodiment also provides a home base station gateway, including a core network relocation device.
  • the core network relocation device includes:
  • the information obtaining module 70 is configured to: obtain capability indication information of the connected core network device, where the capability indication information of the core network device includes support information of the core network device to the NB-IOT;
  • the core network selection module 80 is configured to: after receiving the initial direct transmission message of the NB-IOT user sent by the home base station or the relay node, according to the support information of the core network device to the NB-IOT, the NB is the NB -IOT users choose core network devices that support NB-IOT;
  • the routing module 90 is configured to: route the initial direct transmission message of the UE to the core network device supporting the NB-IOT.
  • the information obtaining module acquires the capability indication information of the connected core network device, and includes: acquiring a response message by using an S1 interface or a configuration update message of the mobility management entity MME, and acquiring capability indication information of the connected core network device.
  • the core network selection module selects a core network device that supports the NB-IOT for the NB-IOT user according to the support information of the core network device to the NB-IOT, and includes: acquiring the NB from the initial direct transmission message of the UE. - The support information of the NB-IOT of the IOT user is matched with the support information of the NB-IOT of the core network device, and the matched core network device is selected for the NB-IOT user; The support information of the NB-IOT user and the matched core network device to the NB-IOT includes information indicating that the NB-IOT is supported; or the NB-IOT user and the matched core network device pair.
  • the NB-IOT support information includes information to support SOL2 and/or SOL18 in NB-IOT.
  • the core network selection module acquires the support information of the NB-IOT user for the NB-IOT according to one or more of the following information in the initial direct transmission message of the UE:
  • the UE's globally unique mobility management entity identifies the GUMMEI information
  • the home base station gateway obtains assistance information to perform NNSF functions. As shown in Figure 11, the following steps are included:
  • Step 1 The home base station gateway obtains capability indication information of the core network device connected to the home base station gateway through the S1 interface.
  • the capability indication information of the core network device may include information about whether to support the NB-IOT, or more specifically, whether the information of the SOL2 and/or the SOL18 is supported; the home base station gateway may obtain the response message through the S1 interface, or may pass The MME configuration update message acquires capability indication information of the foregoing core network device;
  • Step 2 The UE accesses the home base station and reports the UE capability information through the air interface, for example, reporting the UE capability information by using the RRC connection setup completion message;
  • Step 3 The home base station sends a UE initial direct transmission message to the home base station gateway.
  • the message includes UE type information or UE capability information.
  • Step 4 After receiving the initial direct transmission message of the UE, the home base station gateway locally selects a core network device supporting the NB-IOT for the NB-IOT user;
  • the core may be based on one or more auxiliary information reported in the following initial direct transmission message of the UE.
  • Network selection GUMMEI information, S-TMSI information, UE type information, and UE capability information.
  • the user type information or the user capability information may include information about whether to support the NB-IOT, or more specifically, information about whether to support SOL2 and/or SOL18.
  • Step 5 The home base station gateway sends the initial initial message of the UE to the selected core network device supporting the NB-IOT.
  • the method of this embodiment is applicable to an LTE system and a 3G system.
  • the core network device refers to the MME, and may also refer to the C-SGN that supports the NB-IOT user.
  • the core network device refers to the SGSN.
  • the host base station is used as an interface proxy between the relay node and the core network, and is connected to the relay node and the core network respectively, and the method of the embodiment is used to implement the core network selection of the NB-IOT user.
  • the home base station gateway in this embodiment is replaced with a host base station, and the home base station is replaced with a relay node.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • the device/function module/functional unit in the above embodiment When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the NB-IOT user core network is implemented under the home base station gateway by using the solution of the embodiment of the present invention.
  • the selection function can meet the use of the narrowband Internet of Things technology in the scenario of the home base station gateway, improve the network efficiency, and avoid the influence of a large number of special-purpose user equipments existing in the network on ordinary users.
  • the home base station gateway can reduce the number of interfaces between the home base station and the core network, and reduce the processing load of the core network. Achieve targeted management of a large number of low-power nodes.

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Abstract

一种窄带物联网用户核心网选择的方法和通信设备，家庭基站网关或宿主基站接收到核心网设备发送的重定位消息后，向家庭基站或中继节点下发核心网重定位指示消息；所述家庭基站网关或宿主基站接收到所述家庭基站或中继节点发送的用户设备UE初始直传消息后，将所述UE初始直传消息路由到支持NB-IOT的核心网设备；其中，所述支持NB-IOT的核心网设备是所述家庭基站网关或宿主基站为所述NB-IOT用户选择的新的核心网设备。本申请方案在家庭基站网关下实现NB-IOT用户核心网选择功能，能够满足窄带物联网技术在家庭基站网关场景下的使用，提升网络效率，避免因为网络中存在的大量特殊用途用户设备对普通用户的影响。

Description

一种核心网重定位、核心网选择的方法和通信设备 技术领域
本申请涉及但不限于移动通信领域。
背景技术
为了给用户提供更高的业务速率并降低使用高速率服务所需的费用，同时也可以弥补已有分布式蜂窝无线通讯系统对用户家庭或办公室覆盖的不足，无线通讯网络运营商可以将家庭基站改装成便于携带和安装的无线宽带接入设备，提供给用户放置在家庭或办公室使用。家庭基站是一种小型低功率家庭基站，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)或光纤等有线接入设备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)，而在3G系统中家庭基站则被称为HNB(Home NodeB)，基站也称为节点B。这里以HeNB为例进行系统架构说明，HeNB所支持的功能与演进的基站(eNB：evolution NodeB)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S1代理连接移动管理实体(Mobility Management Entity，简称MME)。
同时，随着通信技术的发展，到了物联网时代，未来的数百亿物体均要 接入网络。然而，物与物的通信并不像人与人一样总是要追求高速率宽带的方式，大量设备接入网络后仅需少量的数据传输或数据传输频率很低；而且也不像人与人通信中可以频繁进行充电，很多设备因其所处环境的特殊性和数量巨大，对支撑其通信的功耗需求极低。例如大量的水表、灭火器、万亩良田中的喷灌开关、恶劣环境中的气象站等，它们联网后只需极低频率和极少容量的数据传输，且靠外部供电方式非常耗时耗力，4G、5G蜂窝网络并不能满足其需求，而低带宽、低功耗且大范围覆盖的网络是其最优选择。从这个意义上来说，是物联网万物互联的发展，催生了低带宽、低功耗蜂窝网络的崛起。NB-CIOT(Narrow Band Cognitive Internet Of Things,窄带物联网)技术由此引入，针对NB-IOT用户可以设置专用的核心网(C-SGN：CIOT Serving Gateway Node,CIOT服务网关节点)。运营商可以在专门的核心网中管理这些具备特殊用途的终端设备，而和普通用户进行区分，尽量减少对普通用户的影响。
在现有通信技术中，通过专用核心网(DECOR：Dedicated Core Network)可实现针对特殊用途的终端的专用核心网选择，终端的属性信息保存在归属用户服务器(HSS：Home Subscriber Server)中，当核心网获取到终端的特殊用途属性后，可以为终端选择合适的专用核心网，专用核心网用专用组标志来识别。为了将UE重定位到专用核心网，核心网会下发重定位(reroute)消息给家庭基站，家庭基站通过本地的非接入层节点选择功能(NNSF：NAS node selection Function)，以及重定位消息中携带的专用核心网识别信息，为终端选择新的核心网并发起UE初始直传消息。但是在家庭基站网关或者DeNB存在场景下，如何实现针对NB-IOT用户的核心网选择是目前需要解决的问题。与此类似，NB-IOT用户接入中继节点(Relay Node)，而该RN通过宿主基站(Donor eNB,DeNB)连接到核心网的场景下，在核心网重定位的过程中如何实现针对NB-IOT用户的核心网选择，也是目前需要解决的问题。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
有鉴于此，本发明实施例提供了以下技术方案。
一种核心网重定位的方法，包括：
家庭基站网关或宿主基站接收到核心网设备发送的重定位消息后，向家庭基站或中继节点下发核心网重定位指示消息；
所述家庭基站网关或宿主基站接收到所述家庭基站或中继节点发送的用户设备UE初始直传消息后，将所述UE初始直传消息路由到支持NB-IOT的核心网设备；
其中，所述支持NB-IOT的核心网设备是所述家庭基站网关或宿主基站为所述NB-IOT用户选择的新的核心网设备。
一种通信设备，包括核心网重定位装置，所述核心网重定位装置包括：
第一信令处理模块，设置为：接收到核心网设备发送的重定位消息后，向家庭基站或中继节点下发核心网重定位指示消息；
第二信令处理模块，设置为：接收到所述家庭基站或中继节点发送的UE初始直传消息后，将所述UE初始直传消息路由到支持NB-IOT的核心网设备；
非接入层节点选择功能NNSF模块，设置为：执行NNSF，选择出所述支持NB-IOT的核心网设备；
其中，所述通信设备为家庭基站网关或宿主基站。
一种窄带物联网NB-IOT用户核心网选择的方法，包括：
家庭基站网关或宿主基站获取所连接的核心网设备的能力指示信息，所述核心网设备的能力指示信息包含核心网设备对NB-IOT的支持信息；
所述家庭基站网关或宿主基站接收到家庭基站或中继节点发送的NB-IOT用户的UE初始直传消息后，根据所述核心网设备对NB-IOT的支持信息，为所述NB-IOT用户选择支持NB-IOT的核心网设备；
所述家庭基站网关或宿主基站将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备。
一种通信设备，包括核心网重定位装置，所述核心网重定位装置包括：
信息获取模块，设置为：获取所连接的核心网设备的能力指示信息，所 述核心网设备的能力指示信息包含核心网设备对NB-IOT的支持信息；
核心网选择模块，设置为：在接收到家庭基站或中继节点发送的NB-IOT用户的UE初始直传消息后，根据所述核心网设备对NB-IOT的支持信息，为所述NB-IOT用户选择支持NB-IOT的核心网设备；
路由模块，设置为：将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备；
其中，所述通信设备为家庭基站网关或宿主基站。
上述方案在家庭基站网关下实现NB-IOT用户核心网选择功能，能够满足窄带物联网技术在家庭基站网关场景下的使用，提升网络效率，避免因为网络中存在的大量特殊用途用户设备对普通用户的影响。家庭基站网关可以减少家庭基站与核心网的接口数量，减轻核心网的处理负荷。实现对数量众多的低功率节点的针对性管理。
本发明实施例的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本发明实施例而了解。本发明实施例的目的和其他优点可通过在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1是本发明实施例一家庭基站网关侧方法的流程图；
图2是本发明实施例一家庭基站侧方法的流程图；
图3是本发明实施例一家庭基站网关的模块图；
图4是本发明实施例一家庭基站的模块图；
图5是本发明应用示例的家庭基站网络结构的示意图；
图6是本发明应用示例一核心网重定位的信令流程图；
图7是本发明应用示例二核心网重定位的信令流程图；
图8是本发明应用示例三核心网重定位的信令流程图；
图9是本发明实施例二家庭基站网关侧方法的流程图；
图10是本发明实施例二家庭基站网关的模块图；
图11是本发明应用示例四窄带物联网用户核心网选择的信令流程图。
本发明的较佳实施方式
下面结合附图对本发明的实施方式进行描述。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各种方式可以相互组合。
实施例一
本实施例利用DECOR技术实现NB-IOT用户核心网的选择。在本实施例的网络架构中，家庭基站网关作为家庭基站与核心网之间的接口代理，分别连接家庭基站和核心网。
如图1所示，本实施例核心网重定位的方法包括：
步骤110，家庭基站网关接收到核心网设备发送的重定位消息后，向家庭基站下发核心网重定位指示消息；
在支持NB-IOT的UE首次接入核心网后，核心网设备获取到UE的特殊用途属性信息，决定为UE选择适合服务NB-IOT用户的核心网时，为了将UE重定位到专用核心网，核心网设备发起重定位过程，给家庭基站网关(如HeNB网关、HNB网关)下发重定位消息，该消息中包含以下一种或多种信息：S1接口唯一识别UE的标志信息，UE的第一条UE初始直传消息，核心网重定位信息，UE的全球唯一临时UE标识(GUTI：Globally Unique Temporary UE Identity)信息。文中，核心网重定位信息可以是C-SGN组标志，或者是指定的一个或多个C-SGN的标志信息如C-SGN标识或者名称。
本步骤中，向家庭基站下发的核心网重定位指示消息指用于指示家庭基站重定位的消息，并不是对消息的具体名称的限制。该消息的内容可以与重定位消息相同，即家庭基站网关将收到的重定位消息作为核心网重定位指示消息转发；该核心网重定位指示消息也可以与重定位消息有所不同，例如在完成NNSF后，将选择出的支持NB-IOT的核心网设备的标志信息携带在核 心网重定位指示消息中。
步骤120，所述家庭基站网关接收到所述家庭基站发送的UE初始直传消息后，将所述UE初始直传消息路由到支持NB-IOT的核心网设备；其中，所述支持NB-IOT的核心网设备是所述家庭基站网关为所述NB-IOT用户选择的新的核心网设备。
本实施例中，家庭基站网关为NB-IOT用户选择服务核心网设备，可以通过核心网设备下发的重定位消息或者家庭基站在核心网重定位时发送的UE初始直传消息(第二条UE初始直传消息)来触发实现本地NNSF。上述消息携带NB-IOT用户专属的C-SGN相关信息(即上述的核心网重定位信息)和/或用户的GUTI信息来执行NNSF。S1接口用户相关的信令消息家庭基站网关需要进行处理和转发。
具体地，家庭基站网关可以通过以下方式之一选择所述支持NB-IOT的核心网设备：
方式一
家庭基站网关接收到所述重定位消息后，根据所述重定位消息中携带的核心网重定位信息和/或UE的GUTI信息在本地执行NNSF，选择出所述支持NB-IOT的核心网设备并保存。这样，所述家庭基站网关收到所述UE初始直传消息后，通过查找保存的所述支持NB-IOT的核心网设备，将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备。
方式二
家庭基站网关接收到所述重定位消息后，根据所述重定位消息中携带的核心网重定位信息和/或UE的GUTI信息在本地执行NNSF，选择出所述支持NB-IOT的核心网设备，并将所述支持NB-IOT的核心网设备的标志信息携带在向家庭基站下发的核心网重定位指示消息中。之后，所述家庭基站网关收到的所述UE初始直传消息中携带所述标志信息，所述家庭基站网关根据所述UE初始直传消息中的所述标志信息，将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备。
其中，所述支持NB-IOT的核心网设备的标志信息可以包括所述支持 NB-IOT的核心网设备的全球唯一移动管理实体标识(GUMMEI：Globally Unique MME Identity)、所述支持NB-IOT的核心网设备的标识和所述支持NB-IOT的核心网设备的名称中的一种或多种。
方式三
家庭基站网关接收到核心网设备发送的重定位消息后，将所述重定位消息中的核心网重定位信息和/或UE的GUTI信息携带在向家庭基站下发的核心网重定位指示消息中。所述家庭基站网关收到所述UE初始直传消息后，根据所述UE初始直传消息中携带的或者本地保存的核心网重定位信息和/或UE的GUTI信息在本地执行NNSF，选择出所述支持NB-IOT的核心网设备，并将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备。
如图2所示，本实施例家庭基站侧执行的方法包括：
步骤210，家庭基站接收家庭基站网关下发的核心网重定位指示消息；
本步骤中，所述核心网重定位指示消息中携带以下消息中的一种或多种：S1接口唯一识别UE的标志信息，UE的第一条UE初始直传消息，核心网重定位信息，及UE的GUTI信息；或者，所述核心网重定位指示消息中携带以下消息中的一种或多种：S1接口唯一识别UE的标志信息，UE的第一条UE初始直传消息，所述支持NB-IOT的核心网设备的标志信息，及UE的GUTI信息。
步骤220，所述家庭基站收到所述核心网重定位指示消息后，重新向所述家庭基站网关发送UE初始直传消息。
本步骤中，在核心网重定位指示消息中携带核心网重定位信息时，所述UE初始直传消息中携带以下消息中的一种或多种：S1接口唯一识别UE的标志信息、非接入层协议数据单元(NAS PDU)、核心网重定位信息，及UE的GUTI信息。核心网重定位指示消息中携带所述支持NB-IOT的核心网设备的标志信息时，所述UE初始直传消息中携带以下消息中的一种或多种：S1接口唯一识别UE的标志信息、非接入层协议数据单元、所述支持NB-IOT的核心网设备的标志信息，及UE的GUTI信息。
本实施例还提供了一种家庭基站网关，包括核心网重定位装置，如图3所示，所述核心网重定位装置包括：
第一信令处理模块10，设置为：接收到核心网设备发送的重定位消息后，向家庭基站或中继节点下发核心网重定位指示消息；
第二信令处理模块20，设置为：接收到所述家庭基站或中继节点发送的UE初始直传消息后，将所述UE初始直传消息路由到支持NB-IOT的核心网设备；
非接入层节点选择功能NNSF模块30，设置为：执行NNSF，选择出所述支持NB-IOT的核心网设备；
可选地，
所述NNSF模块是在所述第一信令处理模块接收到所述重定位消息后，根据所述重定位消息中携带的核心网重定位信息和/或UE的全球唯一临时UE标识GUTI信息在本地执行NNSF，选择出所述支持NB-IOT的核心网设备并保存；
所述第二信令处理模块将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备，包括：收到所述UE初始直传消息后，从所述NNSF模块查找到保存的所述支持NB-IOT的核心网设备，将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备。
可选地，
所述NNSF模块是在所述第一信令处理模块接收到所述重定位消息后，根据所述重定位消息中携带的核心网重定位信息和/或UE的GUTI信息在本地执行NNSF，选择出所述支持NB-IOT的核心网设备；
所述第二信令处理模块向家庭基站或中继节点下发的核心网重定位指示消息中携带所述支持NB-IOT的核心网设备的标志信息；在收到所述UE初始直传消息后，根据所述UE初始直传消息中携带的所述标志信息，将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备；
其中，所述支持NB-IOT的核心网设备的标志信息包括所述支持NB-IOT 的核心网设备的全球唯一移动管理实体标识GUMMEI、所述支持NB-IOT的核心网设备的标识和所述支持NB-IOT的核心网设备的名称中的一种或多种。
可选地
所述第一信令处理模块接收到核心网设备发送的重定位消息后，将所述重定位消息中的核心网重定位信息和/或UE的GUTI信息携带在向家庭基站或中继节点下发的核心网重定位指示消息中；
所述NNSF模块是在所述第二信令处理模块收到所述UE初始直传消息后，根据所述UE初始直传消息中携带的或者本地保存的核心网重定位信息和/或UE的GUTI信息在本地执行NNSF，选择出所述支持NB-IOT的核心网设备。
本实施例还提供了一种家庭基站网关，包括核心网重定位装置，如图4所示，所述核心网重定位装置包括：
消息接收模块50，设置为：接收家庭基站网关或宿主基站下发的核心网重定位指示消息；
消息发送模块60，设置为：在收到所述核心网重定位指示消息后，重新向所述家庭基站网关或宿主基站发送UE初始直传消息；
可选地，所述核心网重定位指示消息中携带以下消息中的一种或多种：
S1接口唯一识别UE的标志信息；
UE的第一条UE初始直传消息；
核心网重定位信息，或者所述支持NB-IOT的核心网设备的标志信息；
UE的GUTI信息；
所述UE初始直传消息中携带以下消息中的一种或多种：
S1接口唯一识别UE的标志信息；
非接入层协议数据单元；
核心网重定位信息，或者所述支持NB-IOT的核心网设备的标志信息；
UE的GUTI信息。
本实施例方法适用于LTE系统和3G系统。在LTE系统中，核心网设备指MME，也可以指支持NB-IOT用户的C-SGN。在3G系统中，核心网设备指SGSN。
在另一实施例中，宿主基站作为中继节点与核心网之间的接口代理，分别连接中继节点和核心网的场景下，也以应用本实施例方法来实现核心网重定位。在DeNB场景下。DeNB和家庭基站网关保持相同的处理准则，中继节点和家庭基站保持相同的处理准则。也就是说，将本实施例上述家庭基站网关替换为宿主基站，将家庭基站替换为中继节点即可。
下面基于实施例一的方案，给出本发明在应用中的几个示例。
示例一
本示例家庭基站网关作为家庭基站与核心网之间的接口代理，分别连接家庭基站和核心网，家庭基站网络结构示意图如图5所示。
本示例中，家庭基站网关收到重定位消息后本地执行核心网选择，不将核心网选择结果通知给家庭基站。如图6所示，本示例的具体步骤如下：
步骤1：核心网设备获取的UE类型信息为NB-IOT用户，决定为UE选择支持NB-IOT的核心网设备。核心网设备给家庭基站网关下发重定位消息；该消息中包含以下一种或多种信息：S1接口唯一识别UE的标志信息，UE的第一条UE初始直传消息，核心网重定位信息(C-SGN组标志，或者指定的一个或多个C-SGN的标志信息如C-SGN ID或者名称)，UE的GUTI信息；
步骤2：家庭基站网关收到重定位消息后，根据其携带的核心网重定位信息和/或UE的GUTI信息在本地实现NNSF功能，为UE选择新的支持NB-IOT的核心网设备接入，保存选择的支持NB-IOT的核心网设备；
步骤3：家庭基站网关向家庭基站下发核心网重定位指示消息，该消息中包含以下一种或多种信息：S1接口唯一识别UE的标志信息，UE的第一条UE初始直传消息，核心网重定位信息(C-SGN组标志或者指定一个或多个 C-SGN的标志信息，比如C-SGN ID或者名称)，UE的GUTI信息；
步骤4：家庭基站收到核心网重定位指示消息后，重新发起UE初始直传消息，该消息中包含以下一种或多种信息：S1接口唯一识别UE的标志信息，NAS PDU，核心网重定位信息(C-SGN组标志或者指定一个或多个C-SGN的标志信息，比如C-SGN ID或者名称)，UE的GUTI信息；
步骤5：家庭基站网关收到家庭基站发送的UE初始直传消息后，查找到保存的所述支持NB-IOT的核心网设备，将该消息路由到所述支持NB-IOT的核心网设备。
家庭基站网关根据UE初始直传消息中的信息或本地的记录，可以确定收到的UE初始直传消息为核心网重定位所发送的UE初始直传消息。
示例二
本示例中，家庭基站网关收到重定位消息后在本地执行核心网选择，并将核心网选择结果通知给家庭基站。如图8所示，本示例的步骤包括：
步骤1：核心网设备获取的UE类型信息为NB-IOT用户，决定为UE选择支持NB-IOT的核心网设备。核心网设备给家庭基站网关下发重定位消息，该消息中包含以下一种或多种信息：S1接口唯一识别UE的标志信息，UE的第一条UE初始直传消息，核心网重定位信息(C-SGN组标志，或者指定一个或多个C-SGN的标志信息如C-SGN ID或者名称)，UE的GUTI信息；
步骤2：家庭基站网关收到重定位消息后，根据携带的核心网重定位信息和/或UE的GUTI信息在本地实现NNSF功能，为UE选择新的支持NB-IOT的核心网设备接入；
步骤3：家庭基站网关向家庭基站下发核心网重定位指示消息，该消息中包含以下一种或多种信息：S1接口唯一识别UE的标志信息，UE的第一条UE初始直传消息，家庭基站网关为UE选择的所述支持NB-IOT的核心网设备的标志信息(如所选择的C-SGN的GUMMEI，或者C-SGN ID，或者C-SGN的名称)；
步骤4：家庭基站收到核心网重定位指示消息后，重新发起UE初始直传 消息，该消息中包含以下一种或多种信息：S1接口唯一识别UE的标志信息，NAS PDU，家庭基站网关为UE选择的所述支持NB-IOT的核心网设备的标志信息(如所选择的C-SGN的GUMMEI，或者C-SGN ID，或者C-SGN的名称)；
步骤5：家庭基站网关收到家庭基站发送的UE初始直传消息后，根据UE初始直传消息中携带的核心网设备的标志信息，将该消息路由到所述支持NB-IOT的核心网设备。
示例三
本示例中，家庭基站网关收到家庭基站在重定位过程中发送的UE初始直传消息后，在本地执行核心网选择。如图8所示，本示例的步骤包括：
步骤1：核心网设备获取的UE类型信息为NB-IOT用户，决定为UE选择支持NB-IOT的核心网设备。核心网设备给家庭基站网关下发重定位消息，该消息中包含以下一种或多种信息：S1接口唯一识别UE的标志信息，UE的第一条UE初始直传消息，核心网重定位信息(C-SGN组标志，或者指定一个或多个C-SGN的标志信息如C-SGN ID或者名称)，UE的GUTI信息；
步骤2：家庭基站网关收到该消息后进行本地处理，比如保存核心网选择相关的信息，核心网重定位信息，UE的GUTI信息。然后家庭基站网关给家庭基站转发核心网重定位指示消息，该消息中包含以下一种或多种信息：S1接口唯一识别UE的标志信息，UE的第一条UE初始直传消息，核心网重定位信息，UE的GUTI信息。或者，家庭基站网关也可以直接转发核心网重定位指示消息给家庭基站；
步骤3：家庭基站收到核心网重定位指示消息后，重新发起UE初始直传消息，该消息中包含以下一种或多种信息：S1接口唯一识别UE的标志信息，NAS PDU，核心网重定位信息(C-SGN组标志或者指定一个或多个C-SGN的标志信息，比如C-SGN ID或者名称)，UE的GUTI信息；
步骤4：家庭基站网关收到家庭基站发送的UE初始直传消息后，根据消息中携带的核心网重定位信息和/或UE的GUTI信息在本地实现NNSF功能， 为UE选择新的支持NB-IOT的核心网设备接入。
如果步骤2家庭基站网关在本地保存了核心网重定位信息和/或UE的GUTI信息，本步骤家庭基站网关也可以根据保存的核心网重定位信息和/或UE的GUTI信息实现NNSF功能。
步骤5：家庭基站网关将步骤4收到的UE初始直传消息发送到所述支持NB-IOT的核心网设备。
实施例二
本实施例中，用户是NB-IOT用户需要通过UE初始直传消息将用户类型或者能力指示给家庭基站网关，同时家庭基站网关也需要获取哪些核心网节点能够支持NB-IOT用户。家庭基站网关可以通过S1接口从所连接的核心网设备获取C-SGN的能力指示信息，以及从家庭基站获取当前UE的类型或者能力信息，为该NB-IOT用户选择合适的核心网节点。
本实施例NB-IOT用户核心网选择的方法如图9所示，包括：
步骤310，家庭基站网关获取所连接的核心网设备的能力指示信息，所述核心网设备的能力指示信息包含核心网设备对NB-IOT的支持信息；
本步骤中，家庭基站网关可以通过S1接口建立响应消息或者移动管理实体MME配置更新消息，获取所连接的核心网设备的能力指示信息。
步骤320，所述家庭基站网关接收到家庭基站发送的NB-IOT用户的UE初始直传消息后，根据所述核心网设备对NB-IOT的支持信息，为所述NB-IOT用户选择支持NB-IOT的核心网设备；
本步骤中，家庭基站网关可以从UE初始直传消息中获取所述NB-IOT用户对NB-IOT的支持信息，与所述核心网设备对NB-IOT的支持信息进行匹配，为所述NB-IOT用户选择匹配到的核心网设备。其中，所述对NB-IOT的支持信息包括以下信息中的一种或多种：是否支持NB-IOT的信息，是否支持NB-IOT中控制面实现数据传输方案(SOL2)的信息，及是否支持NB-IOT中用户面实现数据传输方案(SOL18)的信息。如果家庭基站网关支持 NB-IOT，或者更细化的，支持NB-IOT中的SOL2和/或SOL18；则匹配到的核心网设备也支持NB-IOT，或者更细化的，也支持NB-IOT中的SOL2和/或SOL18。
本步骤中，家庭基站网关可以根据UE初始直传消息中的以下一种或多种信息获取所述NB-IOT用户对NB-IOT的支持信息：UE的全球唯一移动管理实体标识GUMMEI信息、UE的临时UE识别号(S-TMSI：SAE-Temporary Mobile Subscriber Identit)信息、UE的类型信息，及UE的能力信息。
步骤330，所述家庭基站网关将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备。
本实施例还提供了一种家庭基站网关，包括核心网重定位装置，如图10所示，所述核心网重定位装置包括：
信息获取模块70，设置为：获取所连接的核心网设备的能力指示信息，所述核心网设备的能力指示信息包含核心网设备对NB-IOT的支持信息；
核心网选择模块80，设置为：在接收到家庭基站或中继节点发送的NB-IOT用户的UE初始直传消息后，根据所述核心网设备对NB-IOT的支持信息，为所述NB-IOT用户选择支持NB-IOT的核心网设备；
路由模块90，设置为：将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备。
可选地，
所述信息获取模块获取所连接的核心网设备的能力指示信息，包括：通过S1接口建立响应消息或者移动管理实体MME配置更新消息，获取所连接的核心网设备的能力指示信息。
可选地，
所述核心网选择模块根据所述核心网设备对NB-IOT的支持信息，为所述NB-IOT用户选择支持NB-IOT的核心网设备，包括：从UE初始直传消息中获取所述NB-IOT用户对NB-IOT的支持信息，与所述核心网设备对NB-IOT的支持信息进行匹配，为所述NB-IOT用户选择匹配到的核心网设备；其中， 所述NB-IOT用户和所述匹配到的核心网设备对NB-IOT的支持信息均包括表示支持NB-IOT的信息；或者，所述NB-IOT用户和所述匹配到的核心网设备对NB-IOT的支持信息均包括支持NB-IOT中SOL2和/或SOL18的信息。
可选地，
所述核心网选择模块根据UE初始直传消息中的以下一种或多种信息获取所述NB-IOT用户对NB-IOT的支持信息：
UE的全球唯一移动管理实体标识GUMMEI信息；
UE的临时UE识别号S-TMSI信息；
UE的类型信息；
UE的能力信息。
下面基于实施例二的方案，给出本发明在应用中的一个示例。
示例四
本示例中，家庭基站网关获取辅助信息以执行NNSF功能。如图11所示，包括以下步骤：
步骤1：家庭基站网关通过S1接口获取家庭基站网关所连接的核心网设备的能力指示信息。其中核心网设备的能力指示信息可以包含是否支持NB-IOT的信息，或者更细化地，包含是否支持SOL2和/或SOL18的信息；家庭基站网关可以通过S1接口建立响应消息获取，也可以通过MME配置更新消息获取上述核心网设备的能力指示信息；
步骤2：UE接入家庭基站并通过空口上报UE能力信息，比如通过RRC连接建立完成消息上报UE能力信息；
步骤3：家庭基站发送UE初始直传消息给家庭基站网关。该消息中包含UE类型信息或者UE能力信息；
步骤4：家庭基站网关收到UE初始直传消息后，在本地为NB-IOT用户选择支持NB-IOT的核心网设备；
可以基于以下UE初始直传消息中上报的一种或多种辅助信息进行核心 网选择：GUMMEI信息，S-TMSI信息，UE类型信息，及UE能力信息。其中，上述用户类型信息或者用户能力信息，可以包含是否支持NB-IOT的信息，或者更细化地，包含是否支持SOL2和/或SOL18的信息。
步骤5：家庭基站网关将UE初始直传消息发送到选择的支持NB-IOT的核心网设备。
本实施例方法适用于LTE系统和3G系统。在LTE系统中，核心网设备指MME，也可以指支持NB-IOT用户的C-SGN。在3G系统中，核心网设备指SGSN。在另一实施例中，宿主基站作为中继节点与核心网之间的接口代理，分别连接中继节点和核心网的场景下，也以应用本实施例方法来实现NB-IOT用户核心网选择。在DeNB场景下，将本实施例上述家庭基站网关替换为宿主基站，将家庭基站替换为中继节点即可。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计算机程序流程来实现，所述计算机程序可以存储于一计算机可读存储介质中，所述计算机程序在相应的硬件平台上(如系统、设备、装置、器件等)执行，在执行时，包括方法实施例的步骤之一或其组合。
可选地，上述实施例的全部或部分步骤也可以使用集成电路来实现，这些步骤可以被分别制作成一个个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。
上述实施例中的装置/功能模块/功能单元可以采用通用的计算装置来实现，它们可以集中在单个的计算装置上，也可以分布在多个计算装置所组成的网络上。
上述实施例中的装置/功能模块/功能单元以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。上述提到的计算机可读取存储介质可以是只读存储器，磁盘或光盘等。
工业实用性
通过本发明实施例的方案，在家庭基站网关下实现NB-IOT用户核心网 选择功能，能够满足窄带物联网技术在家庭基站网关场景下的使用，提升网络效率，避免因为网络中存在的大量特殊用途用户设备对普通用户的影响。家庭基站网关可以减少家庭基站与核心网的接口数量，减轻核心网的处理负荷。实现对数量众多的低功率节点的针对性管理。

Claims (22)

  1. 一种核心网重定位的方法，包括：
    家庭基站网关或宿主基站接收到核心网设备发送的重定位消息后，向家庭基站或中继节点下发核心网重定位指示消息；
    所述家庭基站网关或宿主基站接收到所述家庭基站或中继节点发送的用户设备UE初始直传消息后，将所述UE初始直传消息路由到支持NB-IOT的核心网设备；
    其中，所述支持NB-IOT的核心网设备是所述家庭基站网关或宿主基站为所述NB-IOT用户选择的新的核心网设备。
  2. 如权利要求1所述的方法，其中：
    所述家庭基站网关或宿主基站为所述NB-IOT用户选择所述支持NB-IOT的核心网设备，包括：
    所述家庭基站网关或宿主基站接收到所述重定位消息后，根据所述重定位消息中携带的核心网重定位信息和/或UE的全球唯一临时UE标识GUTI信息在本地执行非接入层节点选择功能NNSF，选择出所述支持NB-IOT的核心网设备并保存；
    所述家庭基站网关或宿主基站将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备，包括：
    所述家庭基站网关或宿主基站收到所述UE初始直传消息后，查找到保存的所述支持NB-IOT的核心网设备，将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备。
  3. 如权利要求1所述的方法，其中：
    所述家庭基站网关或宿主基站为所述NB-IOT用户选择所述支持NB-IOT的核心网设备，包括：
    所述家庭基站网关或宿主基站接收到所述重定位消息后，根据所述重定位消息中携带的核心网重定位信息和/或UE的GUTI信息在本地执行NNSF，选择出所述支持NB-IOT的核心网设备，并将所述支持NB-IOT的核心网设备 的标志信息携带在向家庭基站或中继节点下发的核心网重定位指示消息中；
    所述家庭基站网关或宿主基站将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备，包括：
    所述家庭基站网关或宿主基站收到的所述UE初始直传消息中携带所述标志信息，所述家庭基站网关或宿主基站根据所述UE初始直传消息中的所述标志信息，将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备。
  4. 如权利要求3所述的方法，其中：
    所述支持NB-IOT的核心网设备的标志信息包括所述支持NB-IOT的核心网设备的全球唯一移动管理实体标识GUMMEI、所述支持NB-IOT的核心网设备的标识和所述支持NB-IOT的核心网设备的名称中的一种或多种。
  5. 如权利要求1所述的方法，其中：
    所述家庭基站网关或宿主基站接收到核心网设备发送的重定位消息后，向家庭基站或中继节点下发核心网重定位指示消息，包括：
    所述家庭基站网关或宿主基站接收到核心网设备发送的重定位消息后，将所述重定位消息中的核心网重定位信息和/或UE的GUTI信息携带在向家庭基站或中继节点下发的核心网重定位指示消息中；
    所述家庭基站网关或宿主基站将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备，包括：
    所述家庭基站网关或宿主基站收到所述UE初始直传消息后，根据所述UE初始直传消息中携带的或者本地保存的核心网重定位信息和/或UE的GUTI信息在本地执行NNSF，选择出所述支持NB-IOT的核心网设备，并将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备。
  6. 一种核心网重定位的方法，包括：
    家庭基站或中继节点接收家庭基站网关或宿主基站下发的核心网重定位指示消息；
    所述家庭基站或中继节点收到所述核心网重定位指示消息后，重新向所述家庭基站网关或宿主基站发送UE初始直传消息。
  7. 如权利要求6所述的方法，其中：
    所述核心网重定位指示消息中携带以下消息中的一种或多种：
    S1接口唯一识别UE的标志信息；
    UE的第一条UE初始直传消息；
    核心网重定位信息，或者所述支持NB-IOT的核心网设备的标志信息；
    UE的GUTI信息；
    所述UE初始直传消息中携带以下消息中的一种或多种：
    S1接口唯一识别UE的标志信息；
    非接入层协议数据单元；
    核心网重定位信息，或者所述支持NB-IOT的核心网设备的标志信息；
    UE的GUTI信息。
  8. 一种窄带物联网NB-IOT用户核心网选择的方法，包括：
    家庭基站网关或宿主基站获取所连接的核心网设备的能力指示信息，所述核心网设备的能力指示信息包含核心网设备对NB-IOT的支持信息；
    所述家庭基站网关或宿主基站接收到家庭基站或中继节点发送的NB-IOT用户的UE初始直传消息后，根据所述核心网设备对NB-IOT的支持信息，为所述NB-IOT用户选择支持NB-IOT的核心网设备；
    所述家庭基站网关或宿主基站将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备。
  9. 如权利要求8所述的方法，其中：
    所述家庭基站网关或宿主基站获取所连接的核心网设备的能力指示信息，包括：
    所述家庭基站网关或宿主基站通过S1接口建立响应消息或者移动管理实体MME配置更新消息，获取所连接的核心网设备的能力指示信息。
  10. 如权利要求8或9所述的方法，其中：
    所述家庭基站网关或宿主基站根据所述核心网设备对NB-IOT的支持信 息，为所述NB-IOT用户选择支持NB-IOT的核心网设备，包括：
    所述家庭基站网关或宿主基站从UE初始直传消息中获取所述NB-IOT用户对NB-IOT的支持信息，与所述核心网设备对NB-IOT的支持信息进行匹配，为所述NB-IOT用户选择匹配到的核心网设备；其中，所述对NB-IOT的支持信息包括以下信息中的一种或多种：是否支持NB-IOT的信息，是否支持NB-IOT中控制面实现数据传输方案的信息，及是否支持NB-IOT中用户面实现数据传输方案的信息。
  11. 如权利要求10所述的方法，其中：
    所述家庭基站网关或宿主基站根据UE初始直传消息中的以下一种或多种信息获取所述NB-IOT用户对NB-IOT的支持信息：
    UE的全球唯一移动管理实体标识GUMMEI信息；
    UE的临时UE识别号S-TMSI信息；
    UE的类型信息；
    UE的能力信息。
  12. 一种通信设备，其中，包括核心网重定位装置，所述核心网重定位装置包括：
    第一信令处理模块，设置为：接收到核心网设备发送的重定位消息后，向家庭基站或中继节点下发核心网重定位指示消息；
    第二信令处理模块，设置为：接收到所述家庭基站或中继节点发送的UE初始直传消息后，将所述UE初始直传消息路由到支持NB-IOT的核心网设备；
    非接入层节点选择功能NNSF模块，设置为：执行NNSF，选择出所述支持NB-IOT的核心网设备；
    其中，所述通信设备为家庭基站网关或宿主基站。
  13. 如权利要求12所述的通信设备，其中：
    所述NNSF模块是在所述第一信令处理模块接收到所述重定位消息后，根据所述重定位消息中携带的核心网重定位信息和/或UE的全球唯一临时UE标识GUTI信息在本地执行NNSF，选择出所述支持NB-IOT的核心网设 备并保存；
    所述第二信令处理模块将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备，包括：收到所述UE初始直传消息后，从所述NNSF模块查找到保存的所述支持NB-IOT的核心网设备，将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备。
  14. 如权利要求12所述的通信设备，其中：
    所述NNSF模块是在所述第一信令处理模块接收到所述重定位消息后，根据所述重定位消息中携带的核心网重定位信息和/或UE的GUTI信息在本地执行NNSF，选择出所述支持NB-IOT的核心网设备；
    所述第二信令处理模块向家庭基站或中继节点下发的核心网重定位指示消息中携带所述支持NB-IOT的核心网设备的标志信息；在收到所述UE初始直传消息后，根据所述UE初始直传消息中携带的所述标志信息，将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备。
  15. 如权利要求14所述的通信设备，其中：
    所述支持NB-IOT的核心网设备的标志信息包括所述支持NB-IOT的核心网设备的全球唯一移动管理实体标识GUMMEI、所述支持NB-IOT的核心网设备的标识和所述支持NB-IOT的核心网设备的名称中的一种或多种。
  16. 如权利要求12所述的通信设备，其中：
    所述第一信令处理模块接收到核心网设备发送的重定位消息后，将所述重定位消息中的核心网重定位信息和/或UE的GUTI信息携带在向家庭基站或中继节点下发的核心网重定位指示消息中；
    所述NNSF模块是在所述第二信令处理模块收到所述UE初始直传消息后，根据所述UE初始直传消息中携带的或者本地保存的核心网重定位信息和/或UE的GUTI信息在本地执行NNSF，选择出所述支持NB-IOT的核心网设备。
  17. 一种通信设备，包括核心网重定位装置，其中，所述核心网重定位装置包括：
    消息接收模块，设置为：接收家庭基站网关或宿主基站下发的核心网重 定位指示消息；
    消息发送模块，设置为：在收到所述核心网重定位指示消息后，重新向所述家庭基站网关或宿主基站发送UE初始直传消息；
    其中，所述通信设备为家庭基站或中继节点。
  18. 如权利要求17所述的通信设备，其中：
    所述核心网重定位指示消息中携带以下消息中的一种或多种：
    S1接口唯一识别UE的标志信息；
    UE的第一条UE初始直传消息；
    核心网重定位信息，或者所述支持NB-IOT的核心网设备的标志信息；
    UE的全球唯一临时UE标识GUTI信息；
    其中，所述UE初始直传消息中携带以下消息中的一种或多种：
    S1接口唯一识别UE的标志信息；
    非接入层协议数据单元；
    核心网重定位信息，或者所述支持NB-IOT的核心网设备的标志信息；
    UE的全球唯一临时UE标识GUTI信息。
  19. 一种通信设备，其中，包括核心网重定位装置，所述核心网重定位装置包括：
    信息获取模块，设置为：获取所连接的核心网设备的能力指示信息，所述核心网设备的能力指示信息包含核心网设备对NB-IOT的支持信息；
    核心网选择模块，设置为：在接收到家庭基站或中继节点发送的NB-IOT用户的UE初始直传消息后，根据所述核心网设备对NB-IOT的支持信息，为所述NB-IOT用户选择支持NB-IOT的核心网设备；
    路由模块，设置为：将所述UE初始直传消息路由到所述支持NB-IOT的核心网设备；
    其中，所述通信设备为家庭基站网关或宿主基站。
  20. 如权利要求19所述的通信设备，其中：
    所述信息获取模块获取所连接的核心网设备的能力指示信息，包括：通过S1接口建立响应消息或者移动管理实体MME配置更新消息，获取所连接的核心网设备的能力指示信息。
  21. 如权利要求19或20所述的通信设备，其中：
    所述核心网选择模块根据所述核心网设备对NB-IOT的支持信息，为所述NB-IOT用户选择支持NB-IOT的核心网设备，包括：从UE初始直传消息中获取所述NB-IOT用户对NB-IOT的支持信息，与所述核心网设备对NB-IOT的支持信息进行匹配，为所述NB-IOT用户选择匹配到的核心网设备；其中，所述对NB-IOT的支持信息包括以下信息中的一种或多种：是否支持NB-IOT的信息，是否支持NB-IOT中控制面实现数据传输方案的信息，及是否支持NB-IOT中用户面实现数据传输方案的信息。
  22. 如权利要求21所述的通信设备，其中：
    所述核心网选择模块根据UE初始直传消息中的以下一种或多种信息获取所述NB-IOT用户对NB-IOT的支持信息：
    UE的全球唯一移动管理实体标识GUMMEI信息；
    UE的临时UE识别号S-TMSI信息；
    UE的类型信息；
    UE的能力信息。
PCT/CN2016/108266 2016-01-07 2016-12-01 一种核心网重定位、核心网选择的方法和通信设备 WO2017118249A1 (zh)

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