CN117336791A - Method, module and system for realizing local service flow distribution - Google Patents
Method, module and system for realizing local service flow distribution Download PDFInfo
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- H04W28/00—Network traffic management; Network resource management
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Abstract
The invention discloses a method, a module and a system for realizing local service flow diversion. When the method is applied to a shunt module, the method comprises the following steps: after receiving UE uplink data sent by a base station and judging that a sending target of the UE uplink data is a local network, shunting the UE uplink data from the base station to the local network; and receiving the downlink data of the local network, and distributing the downlink data of the local network to the base station from the local network after inquiring the corresponding base station from the xAPP deployed on the intelligent controller based on the tunnel information between the N3 interface base station side and the N3 interface UPF side. The method can directly shunt the traffic sent to the private network from the base station to the local network, and realizes the local shunting function of the traffic.
Description
Technical Field
The present invention relates to the field of network technologies, and in particular, to a method, a module, and a system for implementing local traffic splitting.
Background
With the development of communication technology, especially 5G technology, private networks are increasingly being used. Private networks refer to private communication networks provided in a particular area for a particular industry or business user. Compared with public networks, private networks have higher reliability and better security, wherein a large amount of service traffic is sent to the local network.
However, according to the networking mode in the prior art, the base station in the private network transmits the traffic to the UPF of the core network, and the UPF transmits the traffic to the public network and then switches the traffic from the public network to the local network, so that the transmission delay is increased, and the security is difficult to ensure. Fig. 4 shows a networking manner in the prior art.
On the other hand, the networking mode, the requirement that UPF sink to the private network involves interaction between the private network and the core network, wherein the problems of signaling routing and security are involved, and the networking is relatively complex.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and provides a method, a module and a system for realizing local service flow distribution.
In a first aspect, the present invention provides a method for implementing local traffic splitting, where the method is applied to a splitting module, and the method includes:
after receiving UE uplink data sent by a base station and judging that a sending target of the UE uplink data is a local network, shunting the UE uplink data from the base station to the local network;
the method comprises the steps of,
and receiving the downlink data of the local network, inquiring the corresponding base station from the xAPP deployed on the intelligent controller based on the tunnel information between the N3 interface base station side and the N3 interface UPF side, and shunting the downlink data of the local network from the local network to the base station.
Further, after the UE uplink data is determined to be sent to the local network, the UE uplink data is shunted from the base station to the local network, which specifically includes the following steps:
step A1: analyzing the uplink data of the UE to obtain IP five-tuple information of the uplink data of the UE; the IP five-tuple information comprises a source IP address, a destination IP address, a source port, a destination port and a protocol number;
step A2: judging whether the sending target of the uplink data packet is a local network according to the destination IP address in the IP quintuple information:
if the destination IP address in the IP five-tuple information is a local IP address, judging that the sending target of the uplink data is a local network;
the method comprises the steps of,
and after removing the GTP packet header from the uplink data of the UE, shunting the uplink data from the base station to the local network.
Further, in the step A2, if it is determined that the transmission destination of the uplink data packet is not the local network, the GTP packet header of the UE uplink data packet is removed, and then the uplink data packet is shunted from the base station to the UPF entity.
Further, the receiving the local network downlink data, and after inquiring the corresponding base station from the xAPP deployed on the intelligent controller based on the tunnel information between the N3 interface base station side and the N3 interface UPF side, shunting the local network downlink data from the local network to the base station, specifically includes the following steps:
step B1: receiving downlink data of a local network, inquiring corresponding tunnel information of an N3 interface base station side from an xAPP deployed on an intelligent controller according to tunnel information of an N3 interface UPF side, and obtaining the tunnel information of the N3 interface base station side fed back by the intelligent controller;
step B2: according to the tunnel information of the N3 interface base station side, after adding GTP packet header to the downlink data of the local network, distributing the downlink data from the local network to the base station;
the N3 interface UPF side tunnel information comprises UPF ID and TEID; the N3 interface base station side tunnel information comprises a base station IP and a TEID.
Further, in the step B2, the offloading from the home network to the base station includes:
when the UE session is established, shunting from a local network to a source base station;
the method comprises the steps of,
when the UE moves from the source base station to the target base station, the UE is shunted from the local network to the target base station;
wherein when the UE moves from the source base station to the target base station, the N3 interface tunnel information between the source base station and the UPF entity is released and the N3 interface tunnel information between the target base station and the UPF entity is established.
In a second aspect, the present invention provides a method for implementing local traffic splitting, where the method is applied to a base station, and the method includes:
transmitting uplink data of the UE to a distribution module;
after the offloading module judges that the sending target of the uplink data of the UE is a local network, offloading the uplink data of the UE to the local network through the offloading module;
the method comprises the steps of,
receiving local network downlink data shunted from a local network through a shunting module;
the receiving of the local network downlink data shunted from the local network through the shunting module is performed after the shunting module queries the corresponding base station based on the tunnel information between the N3 interface base station side and the N3 interface UPF side to the xAPP deployed on the intelligent controller.
Further, the receiving the local network downlink data shunted from the local network via the shunting module includes:
when a UE session is established, a source base station receives local network downlink data which is shunted from a local network through a shunting module;
the method comprises the steps of,
when the UE moves from the source base station to the target base station, the target base station receives local network downlink data distributed from the local network through the distribution module.
Further, when the UE moves from the source base station to the target base station, the target base station receives local network downlink data shunted from the local network through the shunting module, and the method includes the following steps:
step C1: when the UE moves from the source base station to the target base station, the N3 interface tunnel information between the source base station and the UPF entity is released, and the N3 interface tunnel information is established between the target base station and the UPF entity;
the method comprises the steps that N3 interface tunnel information is established between a target base station and a UPF entity, wherein xAPP on an intelligent controller sends tunnel information corresponding to the target base station to a shunting module according to subscription of the shunting module;
step C2: the target base station receives the downlink data of the local network;
the local network downlink data is that the distribution module updates the internal context according to the N3 interface tunnel information established between the target base station and the UPF entity, processes the data packet and then sends the data packet to the target base station.
In a third aspect, the present invention provides a splitting module for implementing local traffic splitting, where the splitting module includes:
the receiving unit is used for receiving the UE uplink data sent by the base station and receiving the local network downlink data;
the judging unit is connected with the receiving unit and is used for judging whether the sending target of the UE uplink data is a local network or not;
the first shunting unit is respectively connected with the receiving unit and the judging unit and is used for shunting the UE uplink data from the base station to the local network after the judging unit judges that the sending target of the UE uplink data is the local network;
the inquiring unit is connected with the receiving unit and is used for inquiring the corresponding base station from the xAPP deployed on the intelligent controller based on the tunnel information between the base station side and the UPF side;
and the second shunt unit is respectively connected with the receiving unit and the query unit and is used for shunting the downlink data of the local network from the local network to the base station.
In a fourth aspect, the present invention provides a system for implementing local traffic splitting, where the system includes a base station, a splitting module, and an intelligent controller:
the distribution module is used for distributing the current between the local network and the base station;
the base station comprises a transmitting module and a receiving module,
the sending module is connected with the distributing module and is used for sending the uplink data of the UE to the distributing module;
the receiving module is connected with the shunting module and is used for receiving local network downlink data shunted from the local network through the shunting module;
the intelligent controller is respectively connected with the base station and the distribution module, and is provided with xAPP for acquiring and analyzing IP and TEID of the UE and the two sides of the corresponding N3 interface, so that the distribution module acquires related information from the xAPP for analysis and processing of service flow;
wherein:
after the offloading module judges that the sending target of the uplink data of the UE is a local network, offloading the uplink data of the UE to the local network through the offloading module; the receiving of the local network downlink data shunted from the local network through the shunting module is performed after the shunting module queries the corresponding base station based on the tunnel information between the N3 interface base station side and the N3 interface UPF side to the xAPP deployed on the intelligent controller.
The invention has the beneficial effects that:
1. the invention can directly shunt the traffic sent to the private network from the base station to the local network, thereby realizing the local shunting function of the traffic.
2. The invention adds the local shunt function on the base station side, simplifies the networking difficulty and is beneficial to quick deployment.
3. According to the invention, the special xAPP is deployed on the intelligent controller to acquire and analyze the IP and the TEID of the UE and the two sides of the corresponding N3 interface, and the shunting module acquires related information from the xAPP for analyzing and processing the service flow.
Drawings
FIG. 1 is a schematic diagram of a system architecture according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of local traffic flow splitting based on time base in UE session establishment in the embodiment of the present invention;
fig. 3 is a schematic flow chart of local traffic flow splitting at the time of UE mobile station in the embodiment of the present invention;
fig. 4 is a schematic diagram of a networking manner in the prior art in an embodiment of the present invention.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings.
It is to be understood that the specific embodiments and figures described herein are merely illustrative of the invention, and are not limiting of the invention.
It is to be understood that the various embodiments of the invention and the features of the embodiments may be combined with each other without conflict.
It is to be understood that only the portions relevant to the present invention are shown in the drawings for convenience of description, and the portions irrelevant to the present invention are not shown in the drawings.
It should be understood that each unit and module in the embodiments of the present invention may correspond to only one physical structure, may be formed by a plurality of physical structures, or may be integrated into one physical structure.
It will be appreciated that, without conflict, the functions and steps noted in the flowcharts and block diagrams of the present invention may occur out of the order noted in the figures.
It is to be understood that the flowcharts and block diagrams of the present invention illustrate the architecture, functionality, and operation of possible implementations of systems, apparatuses, devices, methods according to various embodiments of the present invention. Where each block in the flowchart or block diagrams may represent a unit, module, segment, code, or the like, which comprises executable instructions for implementing the specified functions. Moreover, each block or combination of blocks in the block diagrams and flowchart illustrations can be implemented by hardware-based systems that perform the specified functions, or by combinations of hardware and computer instructions.
It should be understood that the units and modules related in the embodiments of the present invention may be implemented by software, or may be implemented by hardware, for example, the units and modules may be located in a processor.
Example 1:
as shown in fig. 1, the present embodiment provides a method for implementing local traffic splitting, where the method is applied to a splitting module, and specifically includes:
after receiving the UE uplink data sent by the base station and judging that the sending target of the UE uplink data is a local network, shunting the UE uplink data from the base station to the local network;
the method comprises the steps of,
and receiving the downlink data of the local network, inquiring the corresponding base station from the xAPP deployed on the intelligent controller based on the tunnel information between the N3 interface base station side and the N3 interface UPF side, and shunting the downlink data of the local network from the local network to the base station.
As a specific embodiment, after determining that the sending target of the UE uplink data is the local network, the UE uplink data is shunted from the base station to the local network, and specifically includes the following steps:
step A1: analyzing the uplink data of the UE to obtain IP five-tuple information of the uplink data of the UE; the IP five-tuple information comprises a source IP address, a destination IP address, a source port, a destination port and a protocol number;
step A2: judging whether the sending target of the uplink data packet is a local network according to the destination IP address in the IP quintuple information:
if the destination IP address in the IP five-tuple information is a local IP address, judging that the sending target of the uplink data is a local network;
the method comprises the steps of,
and after removing the GTP packet header from the uplink data of the UE, shunting the uplink data from the base station to the local network.
In a specific embodiment, in step A2, if it is determined that the transmission destination of the uplink data packet is not the home network, the UE uplink data is shunted from the base station to the UPF entity after the GTP packet header is removed.
As a specific implementation manner, the method receives the downlink data of the local network, queries the corresponding base station from the xAPP deployed on the intelligent controller based on the tunnel information between the N3 interface base station side and the N3 interface UPF side, and shunts the downlink data of the local network from the local network to the base station, and specifically includes the following steps:
step B1: receiving downlink data of a local network, inquiring corresponding tunnel information of an N3 interface base station side from an xAPP deployed on an intelligent controller according to tunnel information of an N3 interface UPF side, and obtaining the tunnel information of the N3 interface base station side fed back by the intelligent controller;
step B2: according to the tunnel information of the N3 interface base station side, after adding GTP packet header to the downlink data of the local network, distributing the downlink data from the local network to the base station;
the N3 interface UPF side tunnel information comprises UPF ID and TEID; the N3 interface base station side tunnel information includes base station IP and TEID.
As a specific embodiment, in step B2, the offloading from the home network to the base station includes:
when the UE session is established, shunting from a local network to a source base station;
the method comprises the steps of,
when the UE moves from the source base station to the target base station, the UE is shunted from the local network to the target base station;
wherein when the UE moves from the source base station to the target base station, the N3 interface tunnel information between the source base station and the UPF entity is released and the N3 interface tunnel information between the target base station and the UPF entity is established.
In this embodiment, the radio access network side is composed of a base station, a shunting module and an intelligent controller (including an xAPP), and the xAPP on the intelligent controller is responsible for inquiring and maintaining the corresponding information of the tunnel of the N3 interface. The intelligent controller is a device proposed by standard organizations such as O-RAN and the like and is used for (near) real-time optimization of base station service, and xAPP is used for expanding optimization items. The distribution module is responsible for analyzing the service flow and respectively sending the flow to a local network or UPF according to the configuration. The base station and the intelligent controller are communicated through an E2 interface defined by the O-RAN alliance, and the intelligent controller (xAPP) and the shunting module are communicated through a self-defined RESTful API interface. The uplink business flow is sent by the base station through the N3 interface, and the data packet is processed (such as GTP packet header is removed) by the distribution module according to the configured distribution rule and then forwarded to the local network or transmitted to the N3 interface of the UPF. In the downlink service flow, the flow sent to the flow distribution module by the UPF through the N3 interface is transmitted to the base station by the flow distribution module; and the distribution module processes the data packet (such as adding a GTP packet header) according to the configured distribution rule and forwards the processed data packet to the base station.
As shown in fig. 2, when the UE initiates session establishment, the flow of local traffic offloading is as follows:
(1) After the intelligent controller is started, xAPP responsible for managing the tunnel information of the N3 interface requests and subscribes UE information, IP and TEID at two ends of the N3 interface and other information from each base station connected with the xAPP;
(2) When UE accesses a certain service, a session establishment flow is initiated, and an N3 interface (GTP-u) tunnel between a base station and UPF is established;
(3) After the GTP-u tunnel is successfully established, the base station sends the related information of the GTP-u tunnel to the intelligent controller, and the related xAPP is used for processing;
(4) The UE transmits uplink data, and the uplink data is transmitted by the base station through an N3 interface;
(5) After receiving the uplink data sent by the base station, the distribution module analyzes the data packet, and determines whether the data packet is processed and then sent to the local network or directly transmitted to the UPF according to the configured distribution rule (generally through an IP quintuple or a destination IP address);
(6) If the local traffic defined by the distribution rule is the local traffic defined by the distribution rule, the distribution module processes the data packet (removing GTP packet header and the like) and then sends the data packet to the local network;
(7) The shunting module also needs to inquire the corresponding tunnel information (base station IP and TEID) of the base station side from xAPP on the intelligent controller according to the tunnel information (UPF IP and TEID) of the N3 interface UPF side and subscribe the change of the tunnel information;
(8) The xAPP on the intelligent controller sends the related information (base station IP, TEID and the like) of the N3 interface to the shunting module;
(9) The distribution module receives downlink traffic sent by a local network;
(10) The flow dividing module processes the downlink flow, such as buffering the data, adding GTP packet header, etc. possibly;
(11) And the distribution module sends the processed downlink traffic to an N3 interface of the base station.
As shown in fig. 3, when the UE moves, for example, the UE moves from the source base station to the target base station, the flow of local traffic offloading is as follows:
(1) The local network sends downlink data to the distribution module;
(2) After the flow dividing module is processed, the downlink flow is sent to the source base station;
(3) As the UE moves, it is switched from the source base station to the target base station, releasing the tunnel of the source base station, and establishing a new tunnel between the target base station and the UPF;
(4) The source base station sends the information released by the tunnel to the intelligent controller according to the subscription request sent by the intelligent controller before;
(5) The target base station sends the information (UE information, UPF IP, TEID, base station IP, TEID and the like) of the new tunnel to the intelligent controller according to the subscription request sent by the intelligent controller;
(6) The corresponding xAPP on the intelligent controller updates tunnel information according to the UE information;
(7) xAPP on the intelligent controller sends updated tunnel information to the distribution module according to subscription of the distribution module;
(8) The shunting module updates the tunnel information context in the shunting module;
(9) The local network sends downlink data to the distribution module;
(10) And the distribution module processes the data packet according to the updated internal context and sends the data packet to the target base station.
Example 2:
as shown in fig. 1, this embodiment provides a method for implementing local traffic splitting, where the method is applied to a base station, and the method includes:
transmitting uplink data of the UE to a distribution module;
after the offloading module judges that the sending target of the uplink data of the UE is the local network, offloading the uplink data of the UE to the local network through the offloading module;
the method comprises the steps of,
receiving local network downlink data shunted from a local network through a shunting module;
the receiving of the local network downlink data which is shunted from the local network through the shunting module is performed after the shunting module queries the corresponding base station based on the tunnel information between the N3 interface base station side and the N3 interface UPF side and the xAPP deployed on the intelligent controller.
As a specific embodiment, receiving the local network downlink data shunted from the local network via the shunting module includes:
when a UE session is established, a source base station receives local network downlink data which is shunted from a local network through a shunting module;
the method comprises the steps of,
when the UE moves from the source base station to the target base station, the target base station receives local network downlink data distributed from the local network through the distribution module.
As a specific embodiment, when the UE moves from the source base station to the target base station, the target base station receives the local network downlink data shunted from the local network via the shunting module, and includes the following steps:
step C1: when the UE moves from the source base station to the target base station, the N3 interface tunnel information between the source base station and the UPF entity is released, and the N3 interface tunnel information is established between the target base station and the UPF entity;
the method comprises the steps that N3 interface tunnel information is established between a target base station and a UPF entity, wherein xAPP on an intelligent controller sends tunnel information corresponding to the target base station to a shunting module according to subscription of the shunting module;
step C2: the target base station receives the downlink data of the local network;
the local network downlink data is that the distribution module updates the internal context according to the N3 interface tunnel information established between the target base station and the UPF entity, processes the data packet and then sends the data packet to the target base station.
Example 3:
the embodiment provides a splitting module for implementing local service flow splitting, where the splitting module includes:
the receiving unit is used for receiving the UE uplink data sent by the base station and receiving the local network downlink data;
the judging unit is connected with the receiving unit and is used for judging whether the sending target of the UE uplink data is a local network or not;
the first shunting unit is respectively connected with the receiving unit and the judging unit and is used for shunting the UE uplink data from the base station to the local network after the judging unit judges that the sending target of the UE uplink data is the local network;
the inquiring unit is connected with the receiving unit and is used for inquiring the corresponding base station to the xAPP deployed on the intelligent controller based on the tunnel information between the base station side and the UPF side;
and the second shunt unit is respectively connected with the receiving unit and the query unit and is used for shunting the downlink data of the local network from the local network to the base station.
Example 4:
as shown in fig. 1, this embodiment provides a system for implementing local traffic splitting, where the system includes a base station, a splitting module and an intelligent controller:
the distribution module is used for distributing the current between the local network and the base station;
the base station comprises a transmitting module and a receiving module,
the sending module is connected with the distributing module and is used for sending the uplink data of the UE to the distributing module;
the receiving module is connected with the shunting module and is used for receiving local network downlink data shunted from the local network through the shunting module;
the intelligent controller is respectively connected with the base station and the distribution module, and is provided with xAPP for acquiring and analyzing the IP and the TEID of the UE and the two sides corresponding to the N3 interface, so that the distribution module acquires related information from the xAPP for analyzing and processing the service flow;
wherein:
after the distribution module judges that the sending target of the UE uplink data is a local network, the UE uplink data is distributed to the local network through the distribution module; the receiving of the local network downlink data shunted from the local network through the shunting module is performed after the shunting module queries the corresponding base station based on the tunnel information between the N3 interface base station side and the N3 interface UPF side to the xAPP deployed on the intelligent controller.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
Claims (10)
1. A method for realizing local traffic flow diversion, which is applied to a diversion module and is characterized in that,
the method comprises the following steps:
after receiving UE uplink data sent by a base station and judging that a sending target of the UE uplink data is a local network, shunting the UE uplink data from the base station to the local network;
the method comprises the steps of,
and receiving the downlink data of the local network, inquiring the corresponding base station from the xAPP deployed on the intelligent controller based on the tunnel information between the N3 interface base station side and the N3 interface UPF side, and shunting the downlink data of the local network from the local network to the base station.
2. The method for implementing local traffic splitting as recited in claim 1, wherein,
after the sending target of the uplink data of the UE is judged to be the local network, the uplink data of the UE is shunted from the base station to the local network, and the method specifically comprises the following steps:
step A1: analyzing the uplink data of the UE to obtain IP five-tuple information of the uplink data of the UE; the IP five-tuple information comprises a source IP address, a destination IP address, a source port, a destination port and a protocol number;
step A2: judging whether the sending target of the uplink data packet is a local network according to the destination IP address in the IP quintuple information:
if the destination IP address in the IP five-tuple information is a local IP address, judging that the sending target of the uplink data is a local network;
the method comprises the steps of,
and after removing the GTP packet header from the uplink data of the UE, shunting the uplink data from the base station to the local network.
3. The method for implementing local traffic splitting as recited in claim 2, wherein,
in the step A2, if it is determined that the transmission destination of the uplink data packet is not the local network, the GTP packet header of the UE uplink data packet is removed, and then the uplink data packet is shunted from the base station to the UPF entity.
4. A method for local traffic splitting as defined in any one of claims 1 to 3, wherein,
the method specifically comprises the following steps of:
step B1: receiving downlink data of a local network, inquiring corresponding tunnel information of an N3 interface base station side from an xAPP deployed on an intelligent controller according to tunnel information of an N3 interface UPF side, and obtaining the tunnel information of the N3 interface base station side fed back by the intelligent controller;
step B2: according to the tunnel information of the N3 interface base station side, after adding GTP packet header to the downlink data of the local network, distributing the downlink data from the local network to the base station;
the N3 interface UPF side tunnel information comprises UPFID and TEID; the N3 interface base station side tunnel information comprises a base station IP and a TEID.
5. The method for implementing local traffic splitting as recited in claim 4, wherein,
in the step B2, the offloading from the home network to the base station includes:
when the UE session is established, shunting from a local network to a source base station;
the method comprises the steps of,
when the UE moves from the source base station to the target base station, the UE is shunted from the local network to the target base station;
wherein when the UE moves from the source base station to the target base station, the N3 interface tunnel information between the source base station and the UPF entity is released and the N3 interface tunnel information between the target base station and the UPF entity is established.
6. A method for implementing local traffic splitting, the method being applied to a base station, characterized in that,
the method comprises the following steps:
transmitting uplink data of the UE to a distribution module;
after the offloading module judges that the sending target of the uplink data of the UE is a local network, offloading the uplink data of the UE to the local network through the offloading module;
the method comprises the steps of,
receiving local network downlink data shunted from a local network through a shunting module;
the receiving of the local network downlink data shunted from the local network through the shunting module is performed after the shunting module queries the corresponding base station based on the tunnel information between the N3 interface base station side and the N3 interface UPF side to the xAPP deployed on the intelligent controller.
7. The method for implementing local traffic splitting as recited in claim 6, wherein,
the receiving the local network downlink data shunted from the local network through the shunting module comprises:
when a UE session is established, a source base station receives local network downlink data which is shunted from a local network through a shunting module;
the method comprises the steps of,
when the UE moves from the source base station to the target base station, the target base station receives local network downlink data distributed from the local network through the distribution module.
8. The method for implementing local traffic splitting as recited in claim 7, wherein,
when the UE moves from a source base station to a target base station, the target base station receives local network downlink data distributed from a local network through a distribution module, and the method comprises the following steps:
step C1: when the UE moves from the source base station to the target base station, the N3 interface tunnel information between the source base station and the UPF entity is released, and the N3 interface tunnel information is established between the target base station and the UPF entity;
the method comprises the steps that N3 interface tunnel information is established between a target base station and a UPF entity, wherein xAPP on an intelligent controller sends tunnel information corresponding to the target base station to a shunting module according to subscription of the shunting module;
step C2: the target base station receives the downlink data of the local network;
the local network downlink data is that the distribution module updates the internal context according to the N3 interface tunnel information established between the target base station and the UPF entity, processes the data packet and then sends the data packet to the target base station.
9. A splitting module for implementing local traffic splitting, wherein the splitting module includes:
the receiving unit is used for receiving the UE uplink data sent by the base station and receiving the local network downlink data;
the judging unit is connected with the receiving unit and is used for judging whether the sending target of the UE uplink data is a local network or not;
the first shunting unit is respectively connected with the receiving unit and the judging unit and is used for shunting the UE uplink data from the base station to the local network after the judging unit judges that the sending target of the UE uplink data is the local network;
the inquiring unit is connected with the receiving unit and is used for inquiring the corresponding base station from the xAPP deployed on the intelligent controller based on the tunnel information between the base station side and the UPF side;
and the second shunt unit is respectively connected with the receiving unit and the query unit and is used for shunting the downlink data of the local network from the local network to the base station.
10. A system for realizing local traffic flow diversion is characterized in that,
the system comprises a base station, a distribution module and an intelligent controller:
the distribution module is used for distributing the current between the local network and the base station;
the base station comprises a transmitting module and a receiving module,
the sending module is connected with the distributing module and is used for sending the uplink data of the UE to the distributing module;
the receiving module is connected with the shunting module and is used for receiving local network downlink data shunted from the local network through the shunting module;
the intelligent controller is respectively connected with the base station and the distribution module, and is provided with xAPP for acquiring and analyzing IP and TEID of the UE and the two sides of the corresponding N3 interface, so that the distribution module acquires related information from the xAPP for analysis and processing of service flow;
wherein:
after the offloading module judges that the sending target of the uplink data of the UE is a local network, offloading the uplink data of the UE to the local network through the offloading module; the receiving of the local network downlink data shunted from the local network through the shunting module is performed after the shunting module queries the corresponding base station based on the tunnel information between the N3 interface base station side and the N3 interface UPF side to the xAPP deployed on the intelligent controller.
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