WO2017202194A1

WO2017202194A1 - Connection establishment method, scef entity, mme, and computer storage medium

Info

Publication number: WO2017202194A1
Application number: PCT/CN2017/083512
Authority: WO
Inventors: 李志军; 黄梅青
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-05-25
Filing date: 2017-05-08
Publication date: 2017-11-30
Also published as: CN107438290B; CN107438290A

Abstract

Disclosed in the present invention are a connection establishment method, an SCEF entity, an MME, and a computer storage medium. The method comprises: after an SCEF entity receives an SCEF connection establishment request sent by an MME, the SCEF entity checks third-party service device information, and rejects the SCEF connection establishment request according to the check result of the third-party service device information.

Description

一种连接建立方法、SCEF实体、MME、计算机存储介质Connection establishment method, SCEF entity, MME, computer storage medium

相关申请的交叉引用Cross-reference to related applications

本申请基于申请号为201610352681.7、申请日为2016年05月25日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。The present application is based on a Chinese patent application filed on Jan. 25, 2016, the entire disclosure of which is hereby incorporated by reference.

技术领域Technical field

本发明涉及非IP数据连接建立技术，尤其涉及一种连接建立方法、服务能力开放功能(SCEF，Service Capability Exposure Function)实体、移动性管理单元(MME，Mobility Management Entity)、计算机存储介质。The present invention relates to a non-IP data connection establishment technology, and in particular, to a connection establishment method, a Service Capability Exposure Function (SCEF) entity, a Mobility Management Entity (MME), and a computer storage medium.

背景技术Background technique

物联网(IoT，Internet of Things)的飞速发展，给第三代合作伙伴计划(3GPP，3rd Generation Partnership Project)定义的演进分组域***(EPS，Evolved Packet System)带来了巨大的挑战。在应用于物联网的终端(UE，User Equipment)中，有一类典型的窄带宽物联网终端(NB-IoT UE，Narrow Band IoT UE)。窄带宽物联网终端(NB-IoT UE)接入网络时，通常发送或接收的有效数据量很小，但是为了实现从空闲态(IDLE)进入连接态(CONNECTED)发起数据，所操作的网络信令本身，远远大于所发送或接收的数据量。因此，这种NB-IoT UE的大量接入，很容易导致网络信令负荷过高，造成网络拥塞，并且对运营商所带来的收益很低。另一方面，窄带宽物联网终端(NB-IoT UE)所传输的数据，可能是非IP的，而现有EPS中数据传输链路的设计，是基于IP传输的，如何传输非IP数据，也给传统EPS网络提出了挑战。 The rapid development of the Internet of Things (IoT) has brought enormous challenges to the Evolved Packet System (EPS) defined by the 3rd Generation Partnership Project (3GPP). In a terminal (UE, User Equipment) applied to the Internet of Things, there is a typical type of narrow bandwidth Internet of Things (NB-IoT UE, Narrow Band IoT UE). When a narrow bandwidth Internet of Things terminal (NB-IoT UE) accesses the network, the amount of valid data that is usually sent or received is small, but in order to implement data from the idle state (IDLE) into the connected state (CONNECTED), the operated network letter The order itself is much larger than the amount of data sent or received. Therefore, the large number of accesses of such NB-IoT UEs can easily lead to excessive network signaling load, causing network congestion and low revenue to operators. On the other hand, the data transmitted by the narrow bandwidth Internet of Things (NB-IoT UE) may be non-IP, and the design of the data transmission link in the existing EPS is based on IP transmission, how to transmit non-IP data, The traditional EPS network is challenged.

为了适应移动物联网通讯的发展，3GPP在现有EPS的架构上进行了增强，并对窄带宽物联网终端(NB-IoT UE)的接入流程进行了简化，以便EPS能适应NB-IoT UE的接入和数据传输。In order to adapt to the development of mobile IoT communication, 3GPP has enhanced the existing EPS architecture and simplified the access process of narrow bandwidth Internet of Things terminals (NB-IoT UE) so that EPS can adapt to NB-IoT UE. Access and data transfer.

如图1所示是现有EPS***对窄带宽物联网终端接入所进行的增强，主要包括演进的通用陆地无线接入网络(E-UTRAN，Evolved Universal Terrestrial Radio Access Network)和演进的分组核心网(EPC，Evolved Packet Core)两部分。Figure 1 shows the enhancement of the existing EPS system for narrow bandwidth IoT terminal access, including the Evolved Universal Terrestrial Radio Access Network (E-UTRAN) and the evolved packet core. Network (EPC, Evolved Packet Core) two parts.

在E-UTRAN无线接入网络中，包括基站(eNodeB，Evolved NodeB)。In the E-UTRAN radio access network, a base station (eNodeB, Evolved NodeB) is included.

在EPC分组核心网中，包含了归属用户数据服务器(HSS，Home Subscriber Server)、移动性管理单元(MME，Mobility Management Entity)、服务网关(S-GW，Serving Gateway)、分组数据网络网关(P-GW，PDN Gateway)，其中：The EPC packet core network includes a Home Subscriber Server (HSS), a Mobility Management Entity (MME), a Serving Gateway (S-GW), and a Packet Data Network Gateway (P). -GW, PDN Gateway), where:

归属用户服务器(HSS，Home Subscriber Server)：是用户签约数据的永久存放地点，位于用户签约的归属网；Home Subscriber Server (HSS): a permanent storage location for user subscription data, located in the home network to which the user subscribes;

移动性管理单元：是用户签约数据在当前网络的存放地点，负责终端到网络的非接入层(NAS，Non-Access Stratum)信令管理、用户空闲模式下的跟踪和寻呼管理功能和承载管理；Mobility management unit: is the location where the user subscription data is stored in the current network, responsible for terminal-to-network non-access stratum (NAS, Non-Access Stratum) signaling management, user idle mode tracking and paging management functions and bearers. management;

服务网关(S-GW，Serving Gateway)：是核心网到无线***的网关，负责终端到核心网的用户面承载、终端空闲模式下的数据缓存、网络侧发起业务请求的功能、合法窃听和分组数据路由和转发功能；Service Gateway (S-GW, Serving Gateway): It is the gateway from the core network to the wireless system. It is responsible for user plane bearer from the terminal to the core network, data buffer in the idle mode of the terminal, function of initiating service request on the network side, legal eavesdropping and grouping. Data routing and forwarding functions;

分组数据网络网关(P-GW，PDN Gateway)：是演进的分组域***(EPS)和该***外部网络的网关，负责终端的IP地址分配、计费功能、分组包过滤、策略应用等功能。Packet Data Network Gateway (P-GW, PDN Gateway): It is an evolved packet domain system (EPS) and a gateway of the external network of the system, and is responsible for functions such as IP address allocation, charging function, packet filtering, and policy application of the terminal.

另外，为了支持窄带宽物联网终端的非IP数据传输，3GPP引入了服务能力开放功能(SCEF，Service Capability Exposure Function)。SCEF通常也被称为能力开放平台，被用于在MME和SCEF间建立专用于传输非IP数据的T6连接(也称为SCEF连接)，以便于从MME接收UE携带在NAS信令中的非IP小数据包并发送给第三方服务平台(SCS，Service Capability Server)或第三方应用服务器(AS，Application Server)，或从SCS/AS处接收非IP小数据包并发送给MME。In addition, in order to support non-IP data transmission of narrow bandwidth IoT terminals, 3GPP introduced the Service Capability Exposure Function (SCEF). SCEF usually Also known as the capability open platform, it is used to establish a T6 connection (also called SCEF connection) dedicated to transmitting non-IP data between the MME and the SCEF, so as to receive from the MME the non-IP small that the UE carries in the NAS signaling. The data packet is sent to a third party service platform (SCS, Service Capability Server) or a third party application server (AS, Application Server), or a non-IP small data packet is received from the SCS/AS and sent to the MME.

图2是在基于图1的架构下，NB-IoT UE附着到网络并实现非IP数据传输的流程示意图，具有如下步骤：2 is a schematic flowchart of attaching a NB-IoT UE to a network and implementing non-IP data transmission based on the architecture of FIG. 1, having the following steps:

2A01～2A07，UE附着到网络，并建立用于传输非IP数据的连接。2A01 to 2A07, the UE attaches to the network and establishes a connection for transmitting non-IP data.

2A01，UE向MME发起附着请求。2A01, the UE initiates an attach request to the MME.

在附着请求中，携带UE的物联网接入能力信息，如UE是否支持控制么优化传输方式、是否支持用户面优化传输方式，等等；In the attach request, carrying the information access capability information of the UE, such as whether the UE supports control, optimizes the transmission mode, supports the user plane to optimize the transmission mode, and the like;

2A02，MME向HSS发送位置更新请求；2A02, the MME sends a location update request to the HSS;

2A03，HSS向MME返回位置更新响应，在该消息中携带UE签约数据；2A03, the HSS returns a location update response to the MME, where the message carries the UE subscription data;

特别地，在本例中，签约数据中包含至少一个特定的接入点名称(APN，Access Point Name)配置，用于供MME建立到SCEF的PDN连接，该SCEF连接可用于传输非IP小数据，当然，也可以用于传输IP小数据。Specifically, in this example, the subscription data includes at least one specific Access Point Name (APN) configuration for the MME to establish a PDN connection to the SCEF, and the SCEF connection can be used to transmit non-IP small data. Of course, it can also be used to transfer IP small data.

具体地，该APN配置包含：连接类型指示、SCEF标识(SCEF ID)等信息。连接类型指示，表明该APN用于建立面向SCEF的连接，还是面向PGW的连接。SCEF标识，可推导出该SCEF的IP地址，通常是SCEF的全域名，该全域名可以唯一地标识出一个SCEF。Specifically, the APN configuration includes: a connection type indication, a SCEF identifier (SCEF ID), and the like. A connection type indication indicates whether the APN is used to establish a connection oriented to SCEF or a connection to a PGW. The SCEF identifier can be used to derive the IP address of the SCEF, which is usually the full domain name of the SCEF, and the full domain name can uniquely identify a SCEF.

2A04，MME向SCEF发起SCEF连接建立请求，其中包含APN名称，EPS承载标识(EPS Bearer ID)；2A04, the MME initiates a SCEF connection establishment request to the SCEF, where the APN name and an EPS bearer ID are included.

MME根据UE签约数据中的APN配置，获取SCEF地址，并向该SCEF发送SCEF连接建立请求。如果UE签约数据中有多个APN配置用来建立 SCEF连接，则MME会针对每个APN配置为UE建立对应的SCEF连接。The MME obtains the SCEF address according to the APN configuration in the UE subscription data, and sends a SCEF connection establishment request to the SCEF. If there are multiple APN configurations in the UE subscription data, If the SCEF is connected, the MME configures a corresponding SCEF connection for the UE for each APN.

对于每一个SCEF连接，目前仅创建一个EPS承载，即MME仅为该SCEF连接分配一个EPS承载标识。For each SCEF connection, only one EPS bearer is currently created, that is, the MME allocates only one EPS bearer identifier to the SCEF connection.

2A05，SCEF收到MME的SCEF连接建立请求，为该UE建立SCEF连接，并向MME返回SCEF连接建立响应；2A05, the SCEF receives the SCEF connection establishment request of the MME, establishes a SCEF connection for the UE, and returns a SCEF connection establishment response to the MME.

2A06，MME向UE返回附着响应；2A06, the MME returns an attach response to the UE;

在附着响应中，MME返回网络所支持的CIOT能力，如网络是否支持控制么优化传输方式、是否支持用户面优化传输方式，等等。In the attach response, the MME returns the CIOT capability supported by the network, such as whether the network supports control, optimizes the transmission mode, supports the user plane optimization transmission mode, and the like.

在附着响应中，还包含为UE建立的SCEF连接的信息，如：IP地址、EPS承载标识，等等。In the attach response, information about the SCEF connection established for the UE, such as an IP address, an EPS bearer identifier, and the like, is also included.

其后，UE进入空闲态。Thereafter, the UE enters an idle state.

2B01～2B04，SCS/AS向网络发起非IP数据传输配置过程。具体地，2B01~2B04, the SCS/AS initiates a non-IP data transmission configuration process to the network. specifically,

2B01，SCS/AS向SCEF发送非IP数据传输配置请求信息，在该请求信息中包含SCS标识(SCS-ID)、SCS参考号(SCS-Reference-ID)；2B01, the SCS/AS sends non-IP data transmission configuration request information to the SCEF, where the request information includes an SCS identifier (SCS-ID) and an SCS reference number (SCS-Reference-ID);

SCEF收到SCS/AS的非IP数据传输配置请求信息后，在本地保存SCS标识、SCS参考号。当UE发起上行小数据传输后，SCEF使用这些信息将小数据发送给正确的SCS/AS。After receiving the non-IP data transmission configuration request information of the SCS/AS, the SCEF saves the SCS identifier and the SCS reference number locally. After the UE initiates uplink small data transmission, the SCEF uses this information to send small data to the correct SCS/AS.

2B02，SCEF向HSS发送数据传输授权请求，在该请求中包含SCEF标识(SCEF-ID)、APN名称；2B02, the SCEF sends a data transmission authorization request to the HSS, where the request includes a SCEF identifier (SCEF-ID) and an APN name;

2B03，HSS对SCEF进行授权检查，返回数据传输授权响应；2B03, the HSS performs an authorization check on the SCEF, and returns a data transmission authorization response;

HSS收到数据传输授权请求后，根据APN配置中的APN、SCEF标识，对SCEF所提供的APN、SCEF标识，进行授权检查。若SCEF所提供的APN、SCEF标识和APN配置中的APN、SCEF标识不一致，则授权检查失败，HSS返回失败响应。After receiving the data transmission authorization request, the HSS performs authorization check on the APN and SCEF identifiers provided by the SCEF according to the APN and SCEF identifiers in the APN configuration. If the APN and SCEF identifiers provided by the SCEF are inconsistent with the APN and SCEF identifiers in the APN configuration, the authorization check fails and the HSS returns a failure response.

2B04，SCEF收到数据传输授权响应后，向SCS/AS返回数据传输配置响应；2B04, after receiving the data transmission authorization response, the SCEF returns the data transmission configuration to the SCS/AS. response;

2C01～2C08，UE发起上行小数据传输流程。2C01~2C08, the UE initiates an uplink small data transmission process.

2C01，UE从空闲态，向eNodeB发起RRC连接请求；2C01, the UE initiates an RRC connection request from the idle state to the eNodeB;

在本例中，UE在RRC连接消息中携带NAS数据包，该NAS数据包中携带UE要发送的上行小数据包，该小数据包可以是非IP小数据包、或IP小数据包。In this example, the UE carries the NAS data packet in the RRC connection message, and the NAS data packet carries the uplink small data packet to be sent by the UE, and the small data packet may be a non-IP small data packet or an IP small data packet.

在该NAS数据包中，同时包含UE要发送上行小数据包所使用的EPS承载所对应的EPS承载标识。使用该承载标识，MME将可以将UE发送的该小数据包转发给正确的SCEF。The NAS data packet includes an EPS bearer identifier corresponding to the EPS bearer used by the UE to send the uplink small data packet. Using the bearer identifier, the MME will forward the small data packet sent by the UE to the correct SCEF.

2C02，eNodeB向MME发起上行NAS数据传输请求，其中携带在前述步骤中的NAS数据包；2C02, the eNodeB initiates an uplink NAS data transmission request to the MME, where the NAS data packet in the foregoing step is carried;

2C03，MME收到eNodeB发送的上行NAS数据传输请求，向SCEF发送始发数据传输消息，携带UE发送的小数据包；2C03, the MME receives the uplink NAS data transmission request sent by the eNodeB, and sends an originating data transmission message to the SCEF, and carries the small data packet sent by the UE;

MME收到eNodeB的消息后，从NAS数据包中提取出UE要发送的小数据包，封装在始发数据传输消息中，发送给SCEF。MME根据前述步骤中建立的SCEF连接，向SCEF发送始发数据传输请求。After receiving the message of the eNodeB, the MME extracts the small data packet to be sent by the UE from the NAS data packet, encapsulates it in the originating data transmission message, and sends it to the SCEF. The MME sends an originating data transmission request to the SCEF according to the SCEF connection established in the foregoing step.

2C04，SCEF收到MME发送的始发数据传输请求后，在外部API接口上向SCS/AS发起数据传输请求，携带UE发送的小数据包；2C04, after receiving the initial data transmission request sent by the MME, the SCEF initiates a data transmission request to the SCS/AS on the external API interface, and carries the small data packet sent by the UE;

2C05，SCS/AS向SCEF返回数据传输响应，其中可能携带SCS/AS要发送给UE的下行小数据包，该小数据包可能是非IP小数据包、或IP小数据包；2C05, the SCS/AS returns a data transmission response to the SCEF, which may carry a downlink small data packet to be sent by the SCS/AS to the UE, and the small data packet may be a non-IP small data packet or an IP small data packet;

2C06，SCEF向MME返回始发数据传输响应，其中可能携带SCS/AS要发送给UE的小数据包；2C06, the SCEF returns an originating data transmission response to the MME, which may carry a small data packet to be sent by the SCS/AS to the UE;

需要明确的是，SCEF是否等候步骤2C04～2C05完成后才发起2C06步骤，完全取决于SCEF内部实现。 It is necessary to be clear whether the SCEF initiates the 2C06 step after completing the steps 2C04 to 2C05, which is completely dependent on the internal implementation of the SCEF.

2C07，MME向eNodeB返回上行NAS数据传输响应，其中可能携带NAS数据包，用以携带要发往UE的小数据包；2C07, the MME returns an uplink NAS data transmission response to the eNodeB, where the eNB may carry a NAS data packet to carry a small data packet to be sent to the UE;

2C08，eNodeB向UE返回RRC连接响应，可能NAS数据包，用以携带要发往UE的小数据包；2C08, the eNodeB returns an RRC connection response to the UE, and the possible NAS data packet is used to carry a small data packet to be sent to the UE;

在上述流程中，在UE附着到网络时，MME仅根据UE签约数据中的APN配置，为UE建立SCEF连接。而当UE欲发送上行小数包前，SCEF可能还未收到SCS/AS发送的数据传输配置消息。也就是说，即使UE发起了始发小数据传输，该UE发送的上行小数据包，也只能发送到SCEF，而无法发送给SCS/AS。此时，SCEF有可能丢弃UE发送的上行小数据包，或暂时缓存一段时间。In the above process, when the UE is attached to the network, the MME establishes a SCEF connection for the UE only according to the APN configuration in the UE subscription data. The SCEF may not have received the data transmission configuration message sent by the SCS/AS before the UE wants to send the uplink fractional packet. That is to say, even if the UE initiates the originating small data transmission, the uplink small data packet sent by the UE can only be sent to the SCEF, but cannot be sent to the SCS/AS. At this time, the SCEF may drop the uplink small data packet sent by the UE, or temporarily cache for a period of time.

而对于UE而言，如果UE希望SCS/AS对UE发送的上行小数据包有所回应，即希望SCS/AS返回下行小数据包，在未收到SCS/AS返回的下行小数据时，UE可能多次尝试发送上行小数据，然而这种尝试必然会失败，也导致网络信令的浪费。For the UE, if the UE wants the SCS/AS to respond to the uplink small data packet sent by the UE, it is expected that the SCS/AS returns the downlink small data packet, and when the downlink small data returned by the SCS/AS is not received, the UE It is possible to attempt to send uplink small data multiple times. However, such an attempt will inevitably fail, which also leads to waste of network signaling.

发明内容Summary of the invention

为解决上述技术问题，本发明实施例提供了一种连接建立方法、SCEF实体、MME、计算机存储介质。To solve the above technical problem, an embodiment of the present invention provides a connection establishment method, a SCEF entity, an MME, and a computer storage medium.

本发明实施例提供的连接建立方法，包括：The method for establishing a connection provided by the embodiment of the present invention includes:

SCEF实体接收MME发送的SCEF连接建立请求后，检查第三方服务设备信息，根据对所述第三方服务设备信息的检查结果，拒绝所述SCEF连接建立请求。After receiving the SCEF connection establishment request sent by the MME, the SCEF entity checks the third-party service device information, and rejects the SCEF connection establishment request according to the check result of the third-party service device information.

本发明实施例中，所述检查第三方服务设备信息，包括：In the embodiment of the present invention, the checking third party service device information includes:

所述SCEF实体检查当前有无对应的所述第三方服务设备的数据传输配置请求信息；The SCEF entity checks whether there is currently a corresponding data transmission configuration request information of the third-party service device;

对应地，所述根据对所述第三方服务设备信息的检查结果，拒绝所述 SCEF连接建立请求，包括：Correspondingly, the rejecting the result according to the check result of the third-party service device information SCEF connection establishment request, including:

所述SCEF实体确定没有对应的所述第三方服务设备的数据传输配置请求信息时，拒绝所述SCEF连接建立请求。When the SCEF entity determines that there is no corresponding data transmission configuration request information of the third-party service device, the SCEF connection establishment request is rejected.

本发明实施例中，所述拒绝所述SCEF连接建立请求之后，所述方法还包括：In the embodiment of the present invention, after the rejecting the SCEF connection establishment request, the method further includes:

所述SCEF向所述MME发送SCEF连接建立响应；所述SCEF连接建立响应中携带非IP数据连接状态信息。The SCEF sends a SCEF connection setup response to the MME; the SCEF connection setup response carries non-IP data connection state information.

本发明实施例中，所述非IP数据连接状态信息包括：In the embodiment of the present invention, the non-IP data connection status information includes:

非IP数据传输配置未执行、或SCEF连接不可用。The non-IP data transfer configuration is not performed, or the SCEF connection is not available.

所述SCEF接收所述第三方服务设备发送的数据传输配置请求信息后，向归属用户服务器HSS发送数据传输授权请求；After receiving the data transmission configuration request information sent by the third-party service device, the SCEF sends a data transmission authorization request to the home subscriber server HSS;

接收所述HSS发送的数据传输授权响应，所述数据传输授权响应中携带服务节点信息；Receiving a data transmission authorization response sent by the HSS, where the data transmission authorization response carries service node information;

根据所述服务节点信息，向MME发送SCEF连接建立请求，使所述MME根据所述SCEF连接建立请求建立SCEF连接。And sending, by the serving node information, a SCEF connection establishment request to the MME, so that the MME establishes a SCEF connection according to the SCEF connection establishment request.

所述SCEF接收所述第三方服务设备发送的数据传输配置请求信息后，向归属用户服务器HSS发送数据传输授权请求，使HSS向所述MME发送签约数据信息，所述签约数据信息中包含用于建立SCEF连接的接入点名称APN的配置信息；并由所述MME根据所述APN的配置信息，向SCEF发送SCEF连接建立请求；After receiving the data transmission configuration request information sent by the third-party service device, the SCEF sends a data transmission authorization request to the home subscriber server HSS, so that the HSS sends the subscription data information to the MME, where the subscription data information is included for Establishing configuration information of the access point name APN of the SCEF connection; and sending, by the MME, the SCEF connection establishment request to the SCEF according to the configuration information of the APN;

所述SCEF根据所述SCEF连接建立请求，建立SCEF连接。 The SCEF establishes a SCEF connection according to the SCEF connection establishment request.

本发明实施例提供的SCEF实体，包括：接收单元、检查单元和第一连接建立单元，其中：The SCEF entity provided by the embodiment of the present invention includes: a receiving unit, an inspecting unit, and a first connection establishing unit, where:

接收单元，配置为接收移动性管理单元MME发送的SCEF连接建立请求；a receiving unit, configured to receive a SCEF connection establishment request sent by the mobility management unit MME;

检查单元，配置为检查第三方服务设备信息；An inspection unit configured to check third party service device information;

第一连接建立单元，配置为根据对所述第三方服务设备信息的检查结果，拒绝所述SCEF连接建立请求。The first connection establishing unit is configured to reject the SCEF connection establishment request according to the check result of the third party service device information.

本发明实施例中，所述检查单元，还配置为检查当前有无对应的所述第三方服务设备的数据传输配置请求信息；In the embodiment of the present invention, the checking unit is further configured to check whether data transmission configuration request information of the third party service device is currently present;

对应地，所述第一连接建立单元，还配置为在确定没有对应的所述第三方服务设备的数据传输配置请求信息时，拒绝所述SCEF连接建立请求。Correspondingly, the first connection establishing unit is further configured to reject the SCEF connection establishment request when determining that there is no corresponding data transmission configuration request information of the third-party service device.

本发明实施例中，所述SCEF实体还包括：In the embodiment of the present invention, the SCEF entity further includes:

第一发送单元，配置为向所述MME发送SCEF连接建立响应；所述SCEF连接建立响应中携带非IP数据连接状态信息。The first sending unit is configured to send a SCEF connection establishment response to the MME, where the SCEF connection establishment response carries non-IP data connection status information.

本发明实施例中，所述SCEF实体还包括：第二发送单元和第三发送单元，其中：In the embodiment of the present invention, the SCEF entity further includes: a second sending unit and a third sending unit, where:

所述接收单元，还配置为接收所述第三方服务设备发送的数据传输配置请求信息，对应地，所述第二发送单元，配置为向归属用户服务器HSS发送数据传输授权请求；The receiving unit is further configured to receive data transmission configuration request information sent by the third-party service device, and correspondingly, the second sending unit is configured to send a data transmission authorization request to the home subscriber server HSS;

所述接收单元，还配置为接收所述HSS发送的数据传输授权响应，所述数据传输授权响应中携带服务节点信息；The receiving unit is further configured to receive a data transmission authorization response sent by the HSS, where the data transmission authorization response carries service node information;

第三发送单元，配置为根据所述服务节点信息，向MME发送SCEF连接建立请求，使所述MME根据所述SCEF连接建立请求建立SCEF连接。 The third sending unit is configured to send a SCEF connection establishment request to the MME according to the service node information, so that the MME establishes a SCEF connection according to the SCEF connection establishment request.

本发明实施例中，所述SCEF实体还包括：第四发送单元和第二连接建立单元，其中：In the embodiment of the present invention, the SCEF entity further includes: a fourth sending unit and a second connection establishing unit, where:

所述接收单元，还配置为接收所述第三方服务设备发送的数据传输配置请求信息，对应地，第四发送单元，配置为向归属用户服务器HSS发送数据传输授权请求，使HSS向所述MME发送签约数据信息，所述签约数据信息中包含用于建立SCEF连接的接入点名称APN的配置信息；以及，由所述MME根据所述APN的配置信息，向SCEF发送SCEF连接建立请求；The receiving unit is further configured to receive data transmission configuration request information sent by the third-party service device, and correspondingly, the fourth sending unit is configured to send a data transmission authorization request to the home subscriber server HSS, so that the HSS sends the data request to the MME. Sending subscription data information, where the subscription data information includes configuration information of an access point name APN for establishing an SCEF connection; and, by the MME, sending a SCEF connection establishment request to the SCEF according to the configuration information of the APN;

第二连接建立单元，配置为根据所述SCEF连接建立请求，建立SCEF连接。The second connection establishing unit is configured to establish a SCEF connection according to the SCEF connection establishment request.

本发明实施例提供的移动性管理单元，包括：第一发送单元、第一接收单元、第二接收单元和连接建立单元，其中：The mobility management unit provided by the embodiment of the present invention includes: a first sending unit, a first receiving unit, a second receiving unit, and a connection establishing unit, where:

第一发送单元，配置为向服务能力开放功能SCEF实体发送SCEF连接建立请求；a first sending unit, configured to send a SCEF connection establishment request to the service capability opening function SCEF entity;

第一接收单元，配置为接收所述SCEF实体发送的SCEF连接建立响应；所述SCEF连接建立响应中携带非IP数据连接状态信息；a first receiving unit, configured to receive a SCEF connection establishment response sent by the SCEF entity, where the SCEF connection establishment response carries non-IP data connection status information;

第二接收单元，配置为接收所述SCE发送的连接建立请求；a second receiving unit, configured to receive a connection establishment request sent by the SCE;

连接建立单元，配置为根据所述SCEF连接建立请求，建立SCEF连接。The connection establishing unit is configured to establish a SCEF connection according to the SCEF connection establishment request.

本发明实施例提供的移动性管理单元，包括：第一发送单元、第一接收单元和第二发送单元，其中：The mobility management unit provided by the embodiment of the present invention includes: a first sending unit, a first receiving unit, and a second sending unit, where:

第一接收单元，配置为接收归属用户服务器HSS发送的签约数据信息，所述签约数据信息中包含用于建立SCEF连接的接入点名称APN的配置信息； The first receiving unit is configured to receive the subscription data information sent by the home subscriber server HSS, where the subscription data information includes configuration information of the access point name APN used to establish the SCEF connection;

第二发送单元，配置为根据所述APN的配置信息，向SCEF发送SCEF连接建立请求。The second sending unit is configured to send a SCEF connection establishment request to the SCEF according to the configuration information of the APN.

本发明实施例提供的计算机存储介质存储有计算机程序，该计算机程序配置为执行上述连接建立方法。The computer storage medium provided by the embodiment of the present invention stores a computer program configured to execute the connection establishment method.

本发明实施例的连接建立方法、SCEF实体、MME、计算机存储介质，当SCEF实体接收到MME发送的SCEF连接建立请求后，不会理解建立SCEF连接，而是要检查第三方服务设备如SCS/AS的信息，根据检查结果确定是否建立SCEF连接。本发明实施例的技术方案使得网络侧能够对SCEF连接的建立和使用加以管理，避免了终端发起上行小数据传输而无法正确地发送给SCS/AS，并可以进一步通知终端当前SCEF连接暂时不可用，使UE不必多次尝试发送上行小数据，从而避免网络信令的浪费。The connection establishment method, the SCEF entity, the MME, and the computer storage medium of the embodiment of the present invention, after receiving the SCEF connection establishment request sent by the MME, the SCEF entity does not understand to establish the SCEF connection, but checks the third-party service equipment such as SCS/ The information of the AS determines whether to establish a SCEF connection according to the check result. The technical solution of the embodiment of the present invention enables the network side to manage the establishment and use of the SCEF connection, and prevents the terminal from initiating uplink small data transmission and cannot correctly send to the SCS/AS, and can further notify the terminal that the current SCEF connection is temporarily unavailable. Therefore, the UE does not have to try to send uplink small data multiple times, thereby avoiding waste of network signaling.

附图说明DRAWINGS

图1为增强的EPS***的组成结构示意图；1 is a schematic structural diagram of an enhanced EPS system;

图2为在基于图1所示的网络架构的UE附着到网络而实现非IP数据传输的流程示意图；2 is a schematic flowchart of implementing non-IP data transmission by a UE based on the network architecture shown in FIG. 1 attached to a network;

图3为本发明实施例一的连接建立方法的流程图；3 is a flowchart of a connection establishment method according to Embodiment 1 of the present invention;

图4为本发明实施例二的连接建立方法的流程图；4 is a flowchart of a connection establishment method according to Embodiment 2 of the present invention;

图5为本发明应用例一的连接建立方法的流程图；FIG. 5 is a flowchart of a connection establishment method according to Embodiment 1 of the present invention;

图6为本发明应用例二的连接建立方法的流程图；6 is a flowchart of a connection establishment method according to application example 2 of the present invention;

图7为本发明实施例的SCEF实体的组成结构示意图；FIG. 7 is a schematic structural diagram of a structure of a SCEF entity according to an embodiment of the present invention;

图8为本发明实施例一的MME的组成结构示意图；FIG. 8 is a schematic structural diagram of a structure of an MME according to Embodiment 1 of the present invention; FIG.

图9为本发明实施例二的MME的组成结构示意图。FIG. 9 is a schematic structural diagram of a structure of an MME according to Embodiment 2 of the present invention.

具体实施方式detailed description

为了能够更加详尽地了解本发明实施例的特点与技术内容，下面结合附图对本发明实施例的实现进行详细阐述，所附附图仅供参考说明之用，并非用来限定本发明实施例。In order to understand the features and technical contents of the embodiments of the present invention in more detail, the following combination The drawings illustrate the implementation of the embodiments of the present invention, and the accompanying drawings are for the purpose of illustration only.

图3为本发明实施例一的连接建立方法的流程图，本实施例中的连接建立方法应用于小数据传输过程，如图3所示，本发明实施例的连接建立方法包括以下处理步骤：FIG. 3 is a flowchart of a connection establishment method according to Embodiment 1 of the present invention. The connection establishment method in this embodiment is applied to a small data transmission process. As shown in FIG. 3, the connection establishment method in the embodiment of the present invention includes the following processing steps:

步骤301，SCEF实体接收移动性管理单元MME发送的SCEF连接建立请求后，检查第三方服务设备信息。Step 301: After receiving the SCEF connection establishment request sent by the mobility management unit MME, the SCEF entity checks the third-party service device information.

本发明实施例中，第三方服务设备包括第三方服务平台(SCS，Service Capability Server)或第三方应用服务器(AS，Application Server)等网元设备。In the embodiment of the present invention, the third-party service device includes a network element device such as a third-party service platform (SCS) or a third-party application server (AS, Application Server).

步骤302，SCEF实体根据对所述第三方服务设备信息的检查结果，拒绝所述SCEF连接建立请求。Step 302: The SCEF entity rejects the SCEF connection establishment request according to the check result of the third-party service device information.

本发明实施例中，检查第三方服务设备信息，即检查当前有无对应的第三方服务设备的数据传输配置请求信息，也即检查是否有SCS请求过非IP数据传输配置流程，如无SCS请求过非IP数据传输配置流程，则拒绝SCEF连接建立请求。In the embodiment of the present invention, the third-party service device information is checked, that is, the data transmission configuration request information of the corresponding third-party service device is checked, that is, whether the SCS requests the non-IP data transmission configuration process, such as no SCS request. After the non-IP data transmission configuration process, the SCEF connection establishment request is rejected.

具体地，所述SCEF实体检查当前有无对应的所述第三方服务设备的数据传输配置请求信息；当确定没有对应的所述第三方服务设备的数据传输配置请求信息时，拒绝所述SCEF连接建立请求。Specifically, the SCEF entity checks whether there is currently a corresponding data transmission configuration request information of the third-party service device; and when it is determined that there is no corresponding data transmission configuration request information of the third-party service device, rejecting the SCEF connection Create a request.

步骤303，所述SCEF向MME发送SCEF连接建立响应。Step 303: The SCEF sends a SCEF connection establishment response to the MME.

所述SCEF连接建立响应中携带非IP数据连接状态信息。其中，所述非IP数据连接状态信息包括：非IP数据传输配置未执行、或SCEF连接不可用。The SCEF connection establishment response carries non-IP data connection status information. The non-IP data connection status information includes: the non-IP data transmission configuration is not performed, or the SCEF connection is unavailable.

步骤304，所述SCEF接收所述第三方服务设备发送的数据传输配置请求信息后，向HSS发送数据传输授权请求。 Step 304: After receiving the data transmission configuration request information sent by the third-party service device, the SCEF sends a data transmission authorization request to the HSS.

步骤305，所述SCEF接收所述HSS发送的数据传输授权响应，所述数据传输授权响应中携带服务节点信息。Step 305: The SCEF receives a data transmission authorization response sent by the HSS, where the data transmission authorization response carries service node information.

步骤306，所述SCEF根据所述服务节点信息，向MME发送SCEF连接建立请求，使所述MME根据所述SCEF连接建立请求建立SCEF连接。Step 306: The SCEF sends a SCEF connection establishment request to the MME according to the service node information, so that the MME establishes a SCEF connection according to the SCEF connection establishment request.

图4为本发明实施例二的连接建立方法的流程图，本实施例中的连接建立方法应用于小数据传输过程，如图4所示，本发明实施例的连接建立方法包括以下处理步骤：4 is a flowchart of a connection establishment method according to Embodiment 2 of the present invention. The connection establishment method in this embodiment is applied to a small data transmission process. As shown in FIG. 4, the connection establishment method in the embodiment of the present invention includes the following processing steps:

步骤401，SCEF实体接收移动性管理单元MME发送的SCEF连接建立请求后，检查第三方服务设备信息。Step 401: After receiving the SCEF connection establishment request sent by the mobility management unit MME, the SCEF entity checks the third-party service device information.

步骤402，SCEF实体根据对所述第三方服务设备信息的检查结果，拒绝所述SCEF连接建立请求。Step 402: The SCEF entity rejects the SCEF connection establishment request according to the check result of the third-party service device information.

本发明实施例中，检查第三方服务设备信息，即检查当前有无对应的所述第三方服务设备的数据传输配置请求信息，也即检查是否有SCS请求过非IP数据传输配置流程，如无SCS请求过非IP数据传输配置流程，则拒绝SCEF连接建立请求。In the embodiment of the present invention, the third-party service device information is checked, that is, the data transmission configuration request information of the third-party service device corresponding to the current presence is checked, that is, whether the SCS requests the non-IP data transmission configuration process, if no The SCS requests a non-IP data transmission configuration process and rejects the SCEF connection establishment request.

步骤403，所述SCEF向MME发送SCEF连接建立响应。Step 403: The SCEF sends a SCEF connection setup response to the MME.

所述SCEF连接建立响应中携带非IP数据连接状态信息。其中，所述非IP数据连接状态信息包括：非IP数据传输配置未执行、或SCEF连接不可用。 The SCEF connection establishment response carries non-IP data connection status information. The non-IP data connection status information includes: the non-IP data transmission configuration is not performed, or the SCEF connection is unavailable.

步骤404，所述SCEF接收所述第三方服务设备发送的数据传输配置请求信息；之后向HSS发送数据传输授权请求。Step 404: The SCEF receives the data transmission configuration request information sent by the third-party service device, and then sends a data transmission authorization request to the HSS.

HSS接收到数据传输授权请求后，向所述MME发送签约数据信息，所述签约数据信息中包含用于建立SCEF连接的接入点名称APN的配置信息；所述MME根据所述APN的配置信息，向SCEF发送SCEF连接建立请求。After receiving the data transmission authorization request, the HSS sends the subscription data information to the MME, where the subscription data information includes configuration information of an access point name APN for establishing an SCEF connection, and the MME is configured according to the configuration information of the APN. Send a SCEF connection establishment request to the SCEF.

步骤405，所述SCEF根据所述SCEF连接建立请求，建立SCEF连接。Step 405: The SCEF establishes a SCEF connection according to the SCEF connection establishment request.

以下通过具体应用例，对本发明实施例的技术方案作进一步详细阐述。The technical solutions of the embodiments of the present invention are further elaborated below through specific application examples.

应用例一Application example one

图5为本发明应用例一的连接建立方法的流程图，本实施例中的连接建立方法应用于小数据传输过程，如图5所示，本发明实施例的SCEF根据SCS/AS信息，决定是否允许MME创建SCEF连接，或者通知MME创建SCEF连接。FIG. 5 is a flowchart of a connection establishment method according to Embodiment 1 of the present invention. The connection establishment method in this embodiment is applied to a small data transmission process. As shown in FIG. 5, the SCEF according to the embodiment of the present invention determines according to SCS/AS information. Whether to allow the MME to create a SCEF connection, or to notify the MME to create a SCEF connection.

如图5所示，本应用例包括以下处理步骤：As shown in FIG. 5, this application example includes the following processing steps:

5A01～5A06，UE附着到网络，SCEF根据SCS/AS信息，拒绝MME发起的SCEF连接建立请求。具体地，5A01~5A06, the UE is attached to the network, and the SCEF rejects the SCEF connection establishment request initiated by the MME according to the SCS/AS information. specifically,

5A01，UE向MME发起附着请求；5A01, the UE initiates an attach request to the MME.

5A02，MME向HSS发送位置更新请求；5A02: The MME sends a location update request to the HSS.

5A03，HSS向MME返回位置更新响应，在UE签约数据中包含APN配置信息，用于创建SCEF连接；5A03, the HSS returns a location update response to the MME, and the APN configuration information is included in the UE subscription data, and is used to create a SCEF connection.

5A04，MME向SCEF发起SCEF连接建立请求；5A04: The MME initiates a SCEF connection establishment request to the SCEF.

5A05，SCEF根据SCS/AS信息，判断是否允许SCEF连接建立请求；5A05, the SCEF determines, according to the SCS/AS information, whether to allow the SCEF connection establishment request;

在步骤5A05中，SCEF检查SCS/AS信息，即检查该SCEF连接是否有对应的SCS/AS信息，也即检查是否有SCS/AS请求过非IP数据传输配置流程。 In step 5A05, the SCEF checks the SCS/AS information, that is, checks whether the SCEF connection has corresponding SCS/AS information, that is, checks whether the SCS/AS has requested the non-IP data transmission configuration flow.

如无SCS/AS请求过非IP数据传输配置流程，则拒绝SCEF连接建立请求。If no SCS/AS requests a non-IP data transmission configuration process, the SCEF connection establishment request is rejected.

5A06，SCEF向MME返回SCEF连接建立响应，其中携带非IP数据连接状态；5A06, the SCEF returns a SCEF connection establishment response to the MME, where the non-IP data connection state is carried;

在本步骤中，非IP数据连接状态，可以是：非IP数据传输配置未执行、或SCEF连接不可用。该非IP数据连接状态，可以由一个失败原因来表示。In this step, the non-IP data connection status may be: the non-IP data transmission configuration is not performed, or the SCEF connection is unavailable. The non-IP data connection status can be represented by a failure cause.

5A07，MME向UE返回附着响应，由于SCEF连接未成功建立，则在附着响应中不包含SCEF连接信息；5A07, the MME returns an attach response to the UE, and the SCEF connection information is not included in the attach response because the SCEF connection is not successfully established;

其后，UE进入空闲态。Thereafter, the UE enters an idle state.

5B01～5B06，SCS/AS向SCEF发送数据传输配置请求信息，SCEF向MME发起SCEF连接建立。具体地，5B01~5B06, the SCS/AS sends the data transmission configuration request information to the SCEF, and the SCEF initiates the SCEF connection establishment to the MME. specifically,

5B01，SCS/AS向SCEF发送数据传输配置请求信息；5B01, the SCS/AS sends data transmission configuration request information to the SCEF;

5B02，SCEF向HSS发送数据传输授权请求；5B02, the SCEF sends a data transmission authorization request to the HSS;

5B03，HSS对SCEF进行授权检查，返回数据传输授权响应；5B03, the HSS performs an authorization check on the SCEF, and returns a data transmission authorization response;

在本步骤中，HSS向SCEF返回当前服务节点信息，即当前MME信息。利用该服务节点信息，SCEF可以主动向MME发起SCEF连接建立。In this step, the HSS returns the current serving node information, that is, the current MME information, to the SCEF. Using the service node information, the SCEF can initiate SCEF connection establishment to the MME.

5B04，SCEF收到数据传输授权响应后，向SCS/AS返回数据传输配置响应；5B04, after receiving the data transmission authorization response, the SCEF returns a data transmission configuration response to the SCS/AS.

5B05，SCEF向MME发送SCEF连接建立请求消息；5B05, the SCEF sends a SCEF connection establishment request message to the MME.

5B06，MME同意SCEF连接建立请求，向SCEF发送SCEF连接建立响应消息。5B06, the MME agrees to the SCEF connection establishment request, and sends a SCEF connection establishment response message to the SCEF.

5B07，MME向UE发送承载建立通知，携带已经建立的SCEF连接的信息。若UE当前为IDLE态，需要先寻呼UE。5B07: The MME sends a bearer setup notification to the UE, and carries the information of the established SCEF connection. If the UE is currently in the IDLE state, the UE needs to be paged first.

需要说明的是，本应用例的步骤5B05～5B06，可以发生在步骤5B04前。 It should be noted that steps 5B05 to 5B06 of this application example may occur before step 5B04.

此后，如果UE从空闲态发起上行小数据传输，如步骤5C01～5C02，MME根据SCEF连接是否已经成功建立，决定是否继续向上投递UE发送的小数据包。Thereafter, if the UE initiates uplink small data transmission from the idle state, as in steps 5C01 to 5C02, the MME decides whether to continue to deliver the small data packet sent by the UE according to whether the SCEF connection has been successfully established.

应用例二Application Example 2

图6为本发明应用例二的连接建立方法的流程图，本实施例中的连接建立方法应用于小数据传输过程，如图6所示，本发明的SCEF根据SCS/AS信息，决定是否允许MME创建SCEF连接，或者通知MME创建SCEF连接。FIG. 6 is a flowchart of a connection establishment method according to application example 2 of the present invention. The connection establishment method in this embodiment is applied to a small data transmission process. As shown in FIG. 6, the SCEF of the present invention determines whether to allow according to SCS/AS information. The MME creates a SCEF connection or notifies the MME to create a SCEF connection.

如图6所示，本应用例包括以下处理步骤：As shown in FIG. 6, this application example includes the following processing steps:

6A01～6A06，如图5中步骤5A01～5A06，UE附着到网络，SCEF根据SCS信息，拒绝MME发起的SCEF连接建立请求。6A01~6A06, as shown in step 5A01~5A06 of FIG. 5, the UE is attached to the network, and the SCEF rejects the SCEF connection establishment request initiated by the MME according to the SCS information.

6B01～6B06，SCEF向HSS发送数据传输授权请求，HSS根据该请求，触发MME发起SCEF连接建立。具体地，6B01~6B06, the SCEF sends a data transmission authorization request to the HSS, and the HSS triggers the MME to initiate the establishment of the SCEF connection according to the request. specifically,

6B01，SCS/AS向SCEF发送数据传输配置请求信息；6B01, the SCS/AS sends data transmission configuration request information to the SCEF;

6B02，SCEF向HSS发送数据传输授权请求；6B02, the SCEF sends a data transmission authorization request to the HSS;

6B03，HSS向MME发送签约数据下载请求消息，在UE签约数据中携带APN配置信息，用以建立SCEF连接；6B03, the HSS sends a subscription data download request message to the MME, and carries the APN configuration information in the UE subscription data, to establish a SCEF connection;

在本步骤中，仅当HSS对SCEF执行授权成功后，HSS才向MME发送UE签约数据，携带APN配置信息，用以建立SCEF连接。In this step, only after the HSS performs the authorization on the SCEF, the HSS sends the UE subscription data to the MME, and carries the APN configuration information to establish the SCEF connection.

6B04，MME向HSS发送签约数据下载响应消息；6B04, the MME sends a subscription data download response message to the HSS;

6B05，HSS对SCEF进行授权检查，返回数据传输授权响应；6B05, the HSS performs an authorization check on the SCEF, and returns a data transmission authorization response;

6B06，SCEF收到数据传输授权响应后，向SCS/AS返回数据传输配置响应；6B06, after receiving the data transmission authorization response, the SCEF returns a data transmission configuration response to the SCS/AS;

6B07，MME向SCEF发送SCEF连接建立请求消息；6B07, the MME sends a SCEF connection establishment request message to the SCEF;

6B08，SCEF同意SCEF连接建立请求，向MME发送SCEF连接建立响应消息。6B08, SCEF agrees to the SCEF connection establishment request, and sends the SCEF connection establishment to the MME. Response message.

6B09，MME向UE发送承载建立通知，携带已经建立的SCEF连接的信息。若UE当前为IDLE态，需要先寻呼UE。6B09, the MME sends a bearer setup notification to the UE, carrying the information of the established SCEF connection. If the UE is currently in the IDLE state, the UE needs to be paged first.

需要说明的是，本应用例的步骤6B07～6B08，可以发生在步骤6B03后，或6B04后。It should be noted that steps 6B07 to 6B08 of this application example may occur after step 6B03 or after 6B04.

此后，如果UE从空闲态发起上行小数据传输，如步骤6C01～6C02，MME根据SCEF连接是否已经成功建立，决定是否继续向上投递UE发送的小数据包。Thereafter, if the UE initiates uplink small data transmission from the idle state, as in steps 6C01 to 6C02, the MME decides whether to continue to deliver the small data packet sent by the UE according to whether the SCEF connection has been successfully established.

图7为本发明实施例的SCEF实体的组成结构示意图，如图7所示，本发明实施例的SCEF实体包括接收单元70、检查单元71和第一连接建立单元72，其中：FIG. 7 is a schematic structural diagram of a structure of a SCEF entity according to an embodiment of the present invention. As shown in FIG. 7, the SCEF entity in the embodiment of the present invention includes a receiving unit 70, an inspecting unit 71, and a first connection establishing unit 72, where:

接收单元70，配置为接收移动性管理单元MME发送的SCEF连接建立请求；The receiving unit 70 is configured to receive a SCEF connection establishment request sent by the mobility management unit MME;

检查单元71，配置为检查第三方服务设备信息；The checking unit 71 is configured to check third party service device information;

第一连接建立单元72，配置为根据对所述第三方服务设备信息的检查结果，拒绝所述SCEF连接建立请求。The first connection establishing unit 72 is configured to reject the SCEF connection establishment request according to the check result of the third party service device information.

本发明实施例中，所述检查单元71，还配置为检查当前有无对应的所述第三方服务设备的数据传输配置请求信息；In the embodiment of the present invention, the checking unit 71 is further configured to check whether data transmission configuration request information of the third party service device is currently present;

对应地，所述第一连接建立单元72，还配置为在确定没有对应的所述第三方服务设备的数据传输配置请求信息时，拒绝所述SCEF连接建立请求。Correspondingly, the first connection establishing unit 72 is further configured to reject the SCEF connection establishment request when determining that there is no corresponding data transmission configuration request information of the third-party service device.

在图7所示的SCEF实体的基础上，本发明实施例的SCEF实体还包括：On the basis of the SCEF entity shown in Figure 7, the SCEF entity of the embodiment of the present invention further includes:

第一发送单元(图7中未示出)，配置为向所述MME发送SCEF连接建立响应；所述SCEF连接建立响应中携带非IP数据连接状态信息。The first sending unit (not shown in FIG. 7) is configured to send a SCEF connection setup response to the MME; the SCEF connection setup response carries non-IP data connection state information.

本领域技术人员应当理解，第一发送单元是为优化本发明实施例的 SCEF实体的技术方案而设置的，并非是实现本发明实施例的SCEF实体的必须的构成。Those skilled in the art should understand that the first transmitting unit is to optimize the embodiment of the present invention. The technical solution of the SCEF entity is not required to implement the SCEF entity of the embodiment of the present invention.

本发明实施例的所述非IP数据连接状态信息包括：The non-IP data connection status information of the embodiment of the present invention includes:

第二发送单元(图7中未示出)和第三发送单元(图7中未示出)，其中：a second transmitting unit (not shown in FIG. 7) and a third transmitting unit (not shown in FIG. 7), wherein:

所述接收单元70，还配置为接收所述第三方服务设备发送的数据传输配置请求信息，对应地，所述第二发送单元，配置为向归属用户服务器HSS发送数据传输授权请求；The receiving unit 70 is further configured to receive data transmission configuration request information sent by the third-party service device, and correspondingly, the second sending unit is configured to send a data transmission authorization request to the home subscriber server HSS;

所述接收单元70，还配置为接收所述HSS发送的数据传输授权响应，所述数据传输授权响应中携带服务节点信息；The receiving unit 70 is further configured to receive a data transmission authorization response sent by the HSS, where the data transmission authorization response carries service node information;

第三发送单元，配置为根据所述服务节点信息，向MME发送SCEF连接建立请求，使所述MME根据所述SCEF连接建立请求建立SCEF连接。The third sending unit is configured to send a SCEF connection establishment request to the MME according to the service node information, so that the MME establishes a SCEF connection according to the SCEF connection establishment request.

本领域技术人员应当理解，第二发送单元及第三发送单元是为优化本发明实施例的SCEF实体的技术方案而设置的，并非是实现本发明实施例的SCEF实体的必须的构成。It should be understood by those skilled in the art that the second sending unit and the third sending unit are provided for optimizing the technical solution of the SCEF entity of the embodiment of the present invention, and are not essential configurations for implementing the SCEF entity of the embodiment of the present invention.

作为另一种构成方式，在图7所示的SCEF实体的基础上，本发明实施例的SCEF实体还可以包括：第四发送单元(图7中未示出)和第二连接建立单元(图7中未示出)，其中：As another configuration manner, the SCEF entity of the embodiment of the present invention may further include: a fourth sending unit (not shown in FIG. 7) and a second connection establishing unit (FIG. 7). Not shown in 7), where:

所述接收单元70，还配置为接收所述第三方服务设备发送的数据传输配置请求信息，对应地，第四发送单元，配置为向归属用户服务器HSS发送数据传输授权请求，使HSS向所述MME发送签约数据信息，所述签约数据信息中包含用于建立SCEF连接的接入点名称APN的配置信息；以及，由所述MME根据所述APN的配置信息，向SCEF发送SCEF连接建立请求；The receiving unit 70 is further configured to receive data transmission configuration request information sent by the third-party service device, and correspondingly, the fourth sending unit is configured to send a data transmission authorization request to the home subscriber server HSS, so that the HSS sends the The MME sends the subscription data information, where the subscription data information includes configuration information of the access point name APN for establishing the SCEF connection; and the MME sends the SCEF connection establishment to the SCEF according to the configuration information of the APN. begging;

本领域技术人员应当理解，第四发送单元以及第二连接建立单元是为优化本发明实施例的SCEF实体的技术方案而设置的，并非是实现本发明实施例的SCEF实体的必须的构成。It should be understood by those skilled in the art that the fourth sending unit and the second connection establishing unit are provided for optimizing the technical solution of the SCEF entity of the embodiment of the present invention, and are not essential configurations for implementing the SCEF entity of the embodiment of the present invention.

本领域技术人员应当理解，图7所示的SCEF实体中的各单元的实现功能可参照前述连接建立方法的各实施例及应用例的相关描述而理解。接收单元及发送单元可以通过相应的网络接口实现，如有线接口。检查单元和连接建立单元可通过微处理器、大型可编程阵列FPGA或相应的芯片构成。It should be understood by those skilled in the art that the implementation functions of the units in the SCEF entity shown in FIG. 7 can be understood by referring to the related descriptions of the embodiments and application examples of the foregoing connection establishing method. The receiving unit and the transmitting unit can be implemented through a corresponding network interface, such as a wired interface. The inspection unit and the connection establishment unit can be constituted by a microprocessor, a large programmable array FPGA or a corresponding chip.

图8为本发明实施例一的MME的组成结构示意图，如图8所示，本发明实施例的MME包括：第一发送单元80、第一接收单元81、第二接收单元82和连接建立单元83，其中：FIG. 8 is a schematic structural diagram of a structure of an MME according to Embodiment 1 of the present invention. As shown in FIG. 8, an MME according to an embodiment of the present invention includes: a first sending unit 80, a first receiving unit 81, a second receiving unit 82, and a connection establishing unit. 83, where:

第一发送单元80，配置为向服务能力开放功能SCEF实体发送SCEF连接建立请求；The first sending unit 80 is configured to send a SCEF connection establishment request to the service capability opening function SCEF entity;

第一接收单元81，配置为接收所述SCEF实体发送的SCEF连接建立响应；所述SCEF连接建立响应中携带非IP数据连接状态信息；The first receiving unit 81 is configured to receive a SCEF connection establishment response sent by the SCEF entity, where the SCEF connection establishment response carries non-IP data connection status information;

第二接收单元82，配置为接收所述SCE发送的连接建立请求；The second receiving unit 82 is configured to receive a connection establishment request sent by the SCE;

连接建立单元83，配置为根据所述SCEF连接建立请求，建立SCEF连接。The connection establishing unit 83 is configured to establish a SCEF connection according to the SCEF connection establishment request.

本领域技术人员应当理解，图8所示的MME中的各单元的实现功能可参照前述连接建立方法的各实施例及应用例的相关描述而理解。接收单元及发送单元可以通过相应的网络接口实现，如有线接口。连接建立单元可通过微处理器、大型可编程阵列FPGA或相应的芯片构成。It should be understood by those skilled in the art that the implementation functions of the units in the MME shown in FIG. 8 can be understood by referring to the related descriptions of the embodiments and application examples of the foregoing connection establishment method. The receiving unit and the transmitting unit can be implemented through a corresponding network interface, such as a wired interface. The connection establishment unit can be constituted by a microprocessor, a large programmable array FPGA or a corresponding chip.

图9为本发明实施例二的MME的组成结构示意图，如图9所示，本发明实施例的MME包括：第一发送单元90、第一接收单元91和第二发送单元92，其中：FIG. 9 is a schematic structural diagram of a structure of an MME according to Embodiment 2 of the present invention, as shown in FIG. The MME of the embodiment includes: a first transmitting unit 90, a first receiving unit 91, and a second transmitting unit 92, where:

第一发送单元90，配置为向服务能力开放功能SCEF实体发送SCEF连接建立请求；The first sending unit 90 is configured to send a SCEF connection establishment request to the service capability opening function SCEF entity;

第一接收单元91，配置为接收归属用户服务器HSS发送的签约数据信息，所述签约数据信息中包含用于建立SCEF连接的接入点名称APN的配置信息；The first receiving unit 91 is configured to receive the subscription data information sent by the home subscriber server HSS, where the subscription data information includes configuration information of an access point name APN for establishing a SCEF connection;

第二发送单元92，配置为根据所述APN的配置信息，向SCEF发送SCEF连接建立请求。The second sending unit 92 is configured to send a SCEF connection establishment request to the SCEF according to the configuration information of the APN.

本领域技术人员应当理解，图9所示的MME中的各单元的实现功能可参照前述连接建立方法的各实施例及应用例的相关描述而理解。接收单元及发送单元可以通过相应的网络接口实现，如有线接口。It should be understood by those skilled in the art that the implementation functions of the units in the MME shown in FIG. 9 can be understood by referring to the related descriptions of the embodiments and application examples of the foregoing connection establishment method. The receiving unit and the transmitting unit can be implemented through a corresponding network interface, such as a wired interface.

本发明实施例上述设备如果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，也可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明实施例的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机、服务器、或者网络设备等)执行本发明各个实施例所述方法的全部或部分。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read Only Memory)、磁碟或者光盘等各种可以存储程序代码的介质。这样，本发明实施例不限制于任何特定的硬件和软件结合。Embodiments of the Invention The above devices may also be stored in a computer readable storage medium if implemented in the form of a software functional module and sold or used as a standalone product. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions. A computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention. The foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

相应地，本发明实施例还提供一种计算机存储介质，其中存储有计算机程序，该计算机程序配置为执行本发明实施例的连接建立方法。Correspondingly, the embodiment of the present invention further provides a computer storage medium, wherein a computer program is configured, and the computer program is configured to execute the connection establishment method of the embodiment of the present invention.

尽管为示例目的，已经公开了本发明的优选实施例，本领域的技术人员将意识到各种改进、增加和取代也是可能的，因此，本发明的范围应当不限于上述实施例。Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, therefore, the scope of the present invention should It is not limited to the above embodiment.

工业实用性Industrial applicability

本发明实施例的技术方案，当SCEF实体接收到MME发送的SCEF连接建立请求后，不会理解建立SCEF连接，而是要检查第三方服务设备如SCS/AS的信息，根据检查结果确定是否建立SCEF连接。本发明实施例的技术方案使得网络侧能够对SCEF连接的建立和使用加以管理，避免了终端发起上行小数据传输而无法正确地发送给SCS/AS，并可以进一步通知终端当前SCEF连接暂时不可用，使UE不必多次尝试发送上行小数据，从而避免网络信令的浪费。 In the technical solution of the embodiment of the present invention, after receiving the SCEF connection establishment request sent by the MME, the SCEF entity does not understand to establish the SCEF connection, but checks the information of the third-party service device, such as the SCS/AS, and determines whether to establish according to the check result. SCEF connection. The technical solution of the embodiment of the present invention enables the network side to manage the establishment and use of the SCEF connection, and prevents the terminal from initiating uplink small data transmission and cannot correctly send to the SCS/AS, and can further notify the terminal that the current SCEF connection is temporarily unavailable. Therefore, the UE does not have to try to send uplink small data multiple times, thereby avoiding waste of network signaling.

Claims

一种连接建立方法，所述方法包括：A connection establishment method, the method comprising:

服务能力开放功能SCEF实体接收移动性管理单元MME发送的SCEF连接建立请求后，检查第三方服务设备信息，根据对所述第三方服务设备信息的检查结果，拒绝所述SCEF连接建立请求。After receiving the SCEF connection establishment request sent by the mobility management unit MME, the service capability open function SCEF entity checks the third party service device information, and rejects the SCEF connection establishment request according to the check result of the third party service device information.
根据权利要求1所述的连接建立方法，其中，所述检查第三方服务设备信息，包括：The connection establishing method according to claim 1, wherein the checking third party service device information comprises:

所述SCEF实体检查当前有无对应的所述第三方服务设备的数据传输配置请求信息；The SCEF entity checks whether there is currently a corresponding data transmission configuration request information of the third-party service device;

对应地，所述根据对第三方服务设备信息的检查结果，拒绝所述SCEF连接建立请求，包括：Correspondingly, the rejecting the SCEF connection establishment request according to the check result of the third-party service device information includes:

所述SCEF实体确定没有对应的所述第三方服务设备的数据传输配置请求信息时，拒绝所述SCEF连接建立请求。When the SCEF entity determines that there is no corresponding data transmission configuration request information of the third-party service device, the SCEF connection establishment request is rejected.
根据权利要求1所述的连接建立方法，其中，所述拒绝所述SCEF连接建立请求之后，所述方法还包括：The connection establishment method according to claim 1, wherein after the rejecting the SCEF connection establishment request, the method further comprises:

所述SCEF向所述MME发送SCEF连接建立响应；所述SCEF连接建立响应中携带非IP数据连接状态信息。The SCEF sends a SCEF connection setup response to the MME; the SCEF connection setup response carries non-IP data connection state information.
根据权利要求3所述的连接建立方法，其中，所述非IP数据连接状态信息包括：The connection establishment method according to claim 3, wherein the non-IP data connection status information comprises:

非IP数据传输配置未执行、或SCEF连接不可用。The non-IP data transfer configuration is not performed, or the SCEF connection is not available.
根据权利要求1所述的连接建立方法，其中，所述拒绝所述SCEF连接建立请求之后，所述方法还包括：The connection establishment method according to claim 1, wherein after the rejecting the SCEF connection establishment request, the method further comprises:

所述SCEF接收所述第三方服务设备发送的数据传输配置请求信息后，向归属用户服务器HSS发送数据传输授权请求；After receiving the data transmission configuration request information sent by the third-party service device, the SCEF sends a data transmission authorization request to the home subscriber server HSS;

接收所述HSS发送的数据传输授权响应，所述数据传输授权响应中携带服务节点信息；Receiving a data transmission authorization response sent by the HSS, where the data transmission authorization response is Carrying service node information;

根据所述服务节点信息，向MME发送SCEF连接建立请求，使所述MME根据所述SCEF连接建立请求建立SCEF连接。And sending, by the serving node information, a SCEF connection establishment request to the MME, so that the MME establishes a SCEF connection according to the SCEF connection establishment request.
根据权利要求1所述的连接建立方法，其中，所述拒绝所述SCEF连接建立请求之后，所述方法还包括：The connection establishment method according to claim 1, wherein after the rejecting the SCEF connection establishment request, the method further comprises:

所述SCEF接收所述第三方服务设备发送的数据传输配置请求信息后，向归属用户服务器HSS发送数据传输授权请求，使HSS向所述MME发送签约数据信息，所述签约数据信息中包含用于建立SCEF连接的接入点名称APN的配置信息；并由所述MME根据所述APN的配置信息，向SCEF发送SCEF连接建立请求；After receiving the data transmission configuration request information sent by the third-party service device, the SCEF sends a data transmission authorization request to the home subscriber server HSS, so that the HSS sends the subscription data information to the MME, where the subscription data information is included for Establishing configuration information of the access point name APN of the SCEF connection; and sending, by the MME, the SCEF connection establishment request to the SCEF according to the configuration information of the APN;

所述SCEF根据所述SCEF连接建立请求，建立SCEF连接。The SCEF establishes a SCEF connection according to the SCEF connection establishment request.
一种服务能力开放功能SCEF实体，所述实体包括：接收单元、检查单元和第一连接建立单元，其中：A service capability open function SCEF entity, the entity comprising: a receiving unit, an inspecting unit, and a first connection establishing unit, wherein:

接收单元，配置为接收移动性管理单元MME发送的SCEF连接建立请求；a receiving unit, configured to receive a SCEF connection establishment request sent by the mobility management unit MME;

检查单元，配置为检查第三方服务设备信息；An inspection unit configured to check third party service device information;

第一连接建立单元，配置为根据对所述第三方服务设备信息的检查结果，拒绝所述SCEF连接建立请求。The first connection establishing unit is configured to reject the SCEF connection establishment request according to the check result of the third party service device information.
根据权利要求7所述的SCEF实体，其中，所述检查单元，还配置为检查当前有无对应的所述第三方服务设备的数据传输配置请求信息；The SCEF entity according to claim 7, wherein the checking unit is further configured to check whether data transmission configuration request information of the third party service device corresponding to the current presence is present;

对应地，所述第一连接建立单元，还配置为在确定没有对应的所述第三方服务设备的数据传输配置请求信息时，拒绝所述SCEF连接建立请求。Correspondingly, the first connection establishing unit is further configured to reject the SCEF connection establishment request when determining that there is no corresponding data transmission configuration request information of the third-party service device.
根据权利要求7所述的SCEF实体，其中，所述SCEF实体还包括：The SCEF entity of claim 7 wherein said SCEF entity further comprises include:

第一发送单元，配置为向所述MME发送SCEF连接建立响应；所述SCEF连接建立响应中携带非IP数据连接状态信息。The first sending unit is configured to send a SCEF connection establishment response to the MME, where the SCEF connection establishment response carries non-IP data connection status information.
根据权利要求9所述的SCEF实体，其中，所述非IP数据连接状态信息包括：The SCEF entity according to claim 9, wherein the non-IP data connection status information comprises:

非IP数据传输配置未执行、或SCEF连接不可用。The non-IP data transfer configuration is not performed, or the SCEF connection is not available.
根据权利要求7所述的SCEF实体，其中，所述SCEF实体还包括：第二发送单元和第三发送单元，其中：The SCEF entity according to claim 7, wherein the SCEF entity further comprises: a second sending unit and a third sending unit, wherein:

所述接收单元，还配置为接收所述第三方服务设备发送的数据传输配置请求信息，对应地，所述第二发送单元，配置为向归属用户服务器HSS发送数据传输授权请求；The receiving unit is further configured to receive data transmission configuration request information sent by the third-party service device, and correspondingly, the second sending unit is configured to send a data transmission authorization request to the home subscriber server HSS;

所述接收单元，还配置为接收所述HSS发送的数据传输授权响应，所述数据传输授权响应中携带服务节点信息；The receiving unit is further configured to receive a data transmission authorization response sent by the HSS, where the data transmission authorization response carries service node information;

第三发送单元，配置为根据所述服务节点信息，向MME发送SCEF连接建立请求，使所述MME根据所述SCEF连接建立请求建立SCEF连接。The third sending unit is configured to send a SCEF connection establishment request to the MME according to the service node information, so that the MME establishes a SCEF connection according to the SCEF connection establishment request.
根据权利要求7所述的SCEF实体，其中，所述SCEF实体还包括：第四发送单元和第二连接建立单元，其中：The SCEF entity according to claim 7, wherein the SCEF entity further comprises: a fourth sending unit and a second connection establishing unit, wherein:

所述接收单元，还配置为接收所述第三方服务设备发送的数据传输配置请求信息，对应地，第四发送单元，配置为向归属用户服务器HSS发送数据传输授权请求，使HSS向所述MME发送签约数据信息，所述签约数据信息中包含用于建立SCEF连接的接入点名称APN的配置信息；以及，由所述MME根据所述APN的配置信息，向SCEF发送SCEF连接建立请求；The receiving unit is further configured to receive data transmission configuration request information sent by the third-party service device, and correspondingly, the fourth sending unit is configured to send a data transmission authorization request to the home subscriber server HSS, so that the HSS sends the data request to the MME. Sending subscription data information, where the subscription data information includes configuration information of an access point name APN for establishing an SCEF connection; and, by the MME, sending a SCEF connection establishment request to the SCEF according to the configuration information of the APN;

第二连接建立单元，配置为根据所述SCEF连接建立请求，建立SCEF 连接。a second connection establishing unit configured to establish a SCEF according to the SCEF connection establishment request connection.
一种移动性管理单元，所述移动性管理单元包括：第一发送单元、第一接收单元、第二接收单元和连接建立单元，其中：A mobility management unit, the mobility management unit comprising: a first sending unit, a first receiving unit, a second receiving unit, and a connection establishing unit, wherein:

第一发送单元，配置为向服务能力开放功能SCEF实体发送SCEF连接建立请求；a first sending unit, configured to send a SCEF connection establishment request to the service capability opening function SCEF entity;

第一接收单元，配置为接收所述SCEF实体发送的SCEF连接建立响应；所述SCEF连接建立响应中携带非IP数据连接状态信息；a first receiving unit, configured to receive a SCEF connection establishment response sent by the SCEF entity, where the SCEF connection establishment response carries non-IP data connection status information;

第二接收单元，配置为接收所述SCE发送的连接建立请求；a second receiving unit, configured to receive a connection establishment request sent by the SCE;

连接建立单元，配置为根据所述SCEF连接建立请求，建立SCEF连接。The connection establishing unit is configured to establish a SCEF connection according to the SCEF connection establishment request.
一种移动性管理单元，所述移动性管理单元包括：第一发送单元、第一接收单元和第二发送单元，其中：A mobility management unit, the mobility management unit includes: a first sending unit, a first receiving unit, and a second sending unit, where:

第一发送单元，配置为向服务能力开放功能SCEF实体发送SCEF连接建立请求；a first sending unit, configured to send a SCEF connection establishment request to the service capability opening function SCEF entity;

第一接收单元，配置为接收归属用户服务器HSS发送的签约数据信息，所述签约数据信息中包含用于建立SCEF连接的接入点名称APN的配置信息；The first receiving unit is configured to receive the subscription data information sent by the home subscriber server HSS, where the subscription data information includes configuration information of the access point name APN used to establish the SCEF connection;

第二发送单元，配置为根据所述APN的配置信息，向SCEF发送SCEF连接建立请求。The second sending unit is configured to send a SCEF connection establishment request to the SCEF according to the configuration information of the APN.
一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，该计算机可执行指令配置为执行权利要求1-6任一项所述的连接建立方法。 A computer storage medium having computer executable instructions stored thereon, the computer executable instructions being configured to perform the connection establishment method of any of claims 1-6.