CN108377525B

CN108377525B - Data transmission system, method and device

Info

Publication number: CN108377525B
Application number: CN201611010022.1A
Authority: CN
Inventors: 张婷婷; 程伟强
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2016-11-16
Filing date: 2016-11-16
Publication date: 2020-09-04
Anticipated expiration: 2036-11-16
Also published as: WO2018090702A1; CN108377525A

Abstract

The application relates to the technical field of mobile communication, in particular to a data transmission system, a method and a device, which are used for solving the problems of poor flexibility and low utilization rate of bandwidth resources in a data transmission mode in a wireless network in the prior art; the data transmission system provided by the embodiment of the application comprises: the first network side node is used for sending a first interconnection signaling to the wireless side management controller; the first interconnection signaling is used for indicating that the first network side node needs to establish communication connection with a second network side node; the wireless side management controller is used for sending first interconnection indication information to a transmission side upper layer controller based on the received first interconnection signaling, and the first interconnection indication information is used for indicating the establishment of a data transmission path between the first network side node and the second network side node; and the transmission side upper layer controller is used for determining a data transmission path between the first network side node and the second network side node based on the received first interconnection indication information.

Description

Data transmission system, method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a data transmission system, method, and apparatus.

Background

With the rapid increase of the types and the number of the wireless communication devices, the increasing abundance of wireless application services puts higher requirements on the throughput, the data transmission rate and the Time delay of the wireless network, and in this context, the Long Time Evolution 5Generation (LTE 5G) mobile communication standard is in force.

As shown in fig. 1, an existing LTE architecture is composed of an Evolved Packet Core (EPC) and an Access Network (E-UTRAN), where the EPC includes a plurality of logical nodes, such as Serving GateWay (SGW), and the E-UTRAN is supported by a plurality of base stations (Evolved NodeB, eNB). The eNB communicates with the EPC through an S1 interface to transmit user data and signaling, and the eNB communicates with the eNB through an X2 interface to exchange information. As shown in fig. 2, data on the wireless side of the eNB is mainly transmitted through a wireless network layer and a transport network layer, data transmission between the eNB and the eNB/EPC requires manual establishment of a data transmission channel in advance, and bandwidth is reserved, if no data transmission is performed in the established data channel, bandwidth resources are wasted, and once the data transmission channel is established, the data transmission channel is not easily removed, and flexibility is poor. In addition, in the TD-LTE Transport Network layer Network, all data transmitted between enbs are dredged in the local Network by a Packet Transport Network (PTN) device of L3, specifically, the data transmitted between enbs are as follows: the access layer → convergence layer → core layer → convergence layer → access layer is transferred, which not only results in larger interconnection delay between enbs, but also occupies more bandwidth resources of the convergence layer and the access layer.

At present, for the 4G + and later 5G and 6G era, some emerging services such as LTE cross base station carrier aggregation, Mobile Edge Computing (MEC), and the like, put forward higher and more severe requirements on the flexibility and bandwidth of a wireless network, and the connection mode of the existing transmission network layer is far from meeting the service requirements. Therefore, the existing wireless network data transmission mode has the problems of poor flexibility and low utilization rate of bandwidth resources.

Disclosure of Invention

The embodiment of the application provides a data transmission system, a data transmission method and a data transmission device, which are used for solving the problems of poor flexibility and low utilization rate of bandwidth resources in a data transmission mode in a wireless network in the prior art.

An embodiment of the present application provides a data transmission system, including:

the first network side node is used for sending a first interconnection signaling to the wireless side management controller; the first interconnection signaling is used for indicating that the first network side node needs to establish communication connection with a second network side node;

the wireless side management controller is used for sending first interconnection indication information to a transmission side upper layer controller based on the received first interconnection signaling, and the first interconnection indication information is used for indicating the establishment of a data transmission path between the first network side node and the second network side node;

and the transmission side upper layer controller is used for determining a data transmission path between the first network side node and the second network side node based on the received first interconnection indication information.

Optionally, the wireless side management controller is further configured to:

when the communication between the first network side node and the second network side node is determined to be finished, sending a removal instruction for removing the data transmission path to the transmission side upper layer controller;

the transmission side upper layer controller is further configured to tear down a data transmission path between the first network side node and the second network side node based on the received tear-down instruction.

Optionally, the system further comprises:

the transmission side lower layer controller is used for collecting network topology structures of a plurality of transmission network elements in the jurisdiction range of the transmission side lower layer controller and reporting the network topology structures to the transmission side upper layer controller; the data transmission path is also used for receiving the data transmission path issued by the upper controller of the transmission side and sending the data transmission path to each transmission network element in the data transmission path;

the transmission side upper layer controller is specifically configured to:

determining a data transmission path between the first network side node and the second network side node based on the network topology of the transmission network element reported by the transmission side lower layer controller and the received first interconnection indication information;

and the transmission network element is configured to transmit data between the first network side node and the second network side node based on the received data transmission path.

Optionally, the transmission-side lower layer controller is further configured to:

receiving boundary path information issued by the upper controller of the transmission side; the boundary path information comprises a plurality of boundary transmission network element information, and the boundary transmission network element is a transmission network element positioned at the boundary of a lower-layer controller at a transmission side; determining internal path information of the transmission side lower layer controller based on the boundary path information, and sending the internal path information to the transmission side upper layer controller; the internal path information comprises internal transmission network element information of a boundary transmission network element connected with the lower layer controller of the transmission side;

the transmission side upper layer controller is specifically configured to:

and determining the data transmission path according to the internal path information reported by the lower layer controller of the transmission side and the boundary path information.

when the network topology structure of the transmission network element in the jurisdiction range of the lower layer controller of the transmission side changes, the updated network topology structure in the jurisdiction range of the lower layer controller of the transmission side is collected again, and the updated network topology structure is reported to the upper layer controller of the transmission side.

Optionally, when the second network side node is a base station or a temporary core network entity located in an access stratum, the transmission side upper layer controller is specifically configured to:

and determining a data transmission path composed of access stratum transmission network elements between the first network side node and the second network side node based on the first interconnection indication information sent by the wireless side management controller.

Optionally, the wireless side management controller is further configured to:

receiving interconnection signaling respectively sent by a plurality of network side nodes;

determining interconnection information of a plurality of network side nodes based on the received interconnection signaling, a preset interconnection request response rule, the connection information established by a plurality of network side nodes and the connection information established by a target network side node which is requested to be connected by the plurality of network side nodes respectively, wherein the interconnection information of each network side node comprises other network side node information connected with the network side node;

and sending interconnection indication information to the transmission side upper layer controller based on the determined interconnection information, wherein the interconnection indication information is used for indicating the transmission side upper layer controller to determine data transmission paths for a plurality of network side nodes.

The transmission side upper layer controller is further configured to:

and determining a data transmission path between the third network side node and the first network side node based on the received second interconnection indication information.

The data transmission method provided by the embodiment of the application comprises the following steps:

a first network side node sends a first interconnection signaling to a wireless side management controller; the first interconnection signaling is used for indicating that the first network side node needs to establish communication connection with a second network side node;

the wireless side management controller sends first interconnection indication information to a transmission side upper layer controller based on the received first interconnection signaling, wherein the first interconnection indication information is used for indicating the establishment of a data transmission path between the first network side node and a second network side node;

and the transmission side upper layer controller determines a data transmission path between the first network side node and the second network side node based on the received first interconnection indication information.

Optionally, the method further comprises:

when the wireless side management controller determines that the communication between the first network side node and the second network side node is finished, sending a removal instruction for instructing to remove the data transmission path to the transmission side upper layer controller;

and the transmission side upper layer controller removes a data transmission path between the first network side node and the second network side node based on the received removal instruction.

Optionally, before the transmission-side upper controller determines the data transmission path between the first network-side node and the second network-side node, the method further includes:

the method comprises the steps that a transmission side lower layer controller collects network topology structures of a plurality of transmission network elements in the jurisdiction range of the transmission side lower layer controller and reports the network topology structures to a transmission side upper layer controller;

the transmission-side upper controller determines a data transmission path between the first network-side node and a second network-side node based on the received first interconnection indication information, including:

and the transmission side upper layer controller determines a data transmission path between the first network side node and the second network side node based on the network topology of the transmission network element reported by the transmission side lower layer controller and the received first interconnection indication information.

Optionally, the method further comprises:

the transmission side lower layer controller receives a data transmission path issued by the transmission side upper layer controller and sends the data transmission path to each transmission network element in the data transmission path;

and the transmission network element transmits the data between the first network side node and the second network side node based on the received data transmission path.

Optionally, the determining, by the transmission-side upper controller, a data transmission path between the first network-side node and the second network-side node includes:

a transmission side lower layer controller tube receives boundary path information issued by a transmission side upper layer controller; the boundary path information comprises a plurality of boundary transmission network element information, and the boundary transmission network element is a transmission network element positioned at the boundary of a lower-layer controller at a transmission side;

determining internal path information of the transmission side lower layer controller based on the boundary path information, and sending the internal path information to the transmission side upper layer controller; the internal path information comprises internal transmission network element information of a boundary transmission network element connected with the lower layer controller of the transmission side;

and the transmission side upper layer controller determines the data transmission path according to the internal path information reported by the transmission side lower layer controller and the boundary path information.

Optionally, the second network side node is a base station or a temporary core network entity located in an access stratum; the transmission-side upper controller determines a data transmission path between the first network-side node and a second network-side node based on the received first interconnection indication information, including:

and the transmission side upper layer controller determines a data transmission path composed of access stratum transmission network elements between the first network side node and the second network side node based on the received first interconnection indication information.

Optionally, the method further comprises:

the wireless side management controller receives interconnection signaling sent by a plurality of network side nodes respectively;

determining interconnection information of the plurality of network side nodes based on the received interconnection signaling, a preset interconnection request response rule, the connection information established by the plurality of network side nodes and the connection information established by target network side nodes which the plurality of network side nodes respectively request to be connected with, wherein the interconnection information of each network side node comprises other network side node information connected with the network side node;

and sending interconnection indication information to a transmission side upper layer controller based on the determined interconnection information, wherein the interconnection indication information is used for indicating the transmission side upper layer controller to determine data transmission paths for the plurality of network side nodes.

The data transmission device provided by the embodiment of the application is located in a wireless side management controller, and comprises:

the interconnection signaling receiving module is used for receiving a first interconnection signaling sent by a first network side node; the first interconnection signaling is used for indicating that the first network side node needs to establish communication connection with a second network side node;

an interconnection indication sending module, configured to send, based on the received first interconnection signaling, first interconnection indication information to a transmission side upper controller, where the first interconnection indication information is used to indicate establishment of a data transmission path between the first network side node and the second network side node.

The embodiment of the present application provides another data transmission apparatus, located in a transmission-side upper controller, including:

the interconnection indication receiving module is used for receiving first interconnection indication information sent by the wireless side management controller;

and the transmission path determining module is used for determining a data transmission path between the first network side node and the second network side node based on the received first interconnection indication information.

The embodiment of the present application provides another data transmission apparatus, located in a lower controller of a transmission side, including:

the collecting module is used for collecting network topology structures of a plurality of transmission network elements in the jurisdiction range of the lower layer controller of the transmission side;

and the reporting module is used for reporting the network topology structure to a transmission side upper layer controller.

An embodiment of the present application further provides a data transmission device, located in a wireless side management controller, including:

a receiving module, configured to receive interconnection signaling sent by multiple network side nodes respectively;

an interconnection information determining module, configured to determine interconnection information of multiple network side nodes based on the received interconnection signaling, a preset interconnection request response rule, connection information that has been established by multiple network side nodes, and connection information that has been established by target network side nodes to which the multiple network side nodes respectively request to connect, where the interconnection information of each network side node includes information of other network side nodes connected to the network side node;

and the sending module is used for sending interconnection indication information to the transmission side upper layer controller based on the determined interconnection information, and is used for indicating the transmission side upper layer controller to determine a data transmission path for a plurality of network side nodes.

In the embodiment of the present application, when a first network-side node needs to perform data transmission with a second network-side node, a first interconnection signaling may be sent to a wireless-side management controller, and the wireless-side management controller may send first interconnection indication information to a transmission-side upper controller based on the received first interconnection signaling, further, after receiving the first interconnection indication information, the transmission-side upper controller may determine a data transmission path between the first network-side node and the second network-side node, so that the data transmission path between the first network-side node and the second network-side node may be determined by the transmission-side upper controller based on the first interconnection indication information sent by the wireless-side management controller, and the data transmission path may be established without manual intervention, which is more flexible, and further, when determining the data transmission path, the utilization of bandwidth resources by the existing data transmission path can be considered, so that the utilization rate of the bandwidth resources can be improved.

Drawings

Fig. 1 is a schematic diagram of an LTE architecture in the prior art;

FIG. 2 is a diagram illustrating interconnection between base stations in the prior art;

fig. 3 is a schematic diagram of a data transmission system according to an embodiment of the present application;

fig. 4 is a schematic diagram of another data transmission system according to an embodiment of the present application;

fig. 5 is a schematic diagram of determining a data transmission path by a transmission side upper layer controller and a transmission side lower layer controller according to an embodiment of the present application;

fig. 6 is a structural diagram of a data transmission device according to an embodiment of the present application;

fig. 7 is a structural diagram of another data transmission device according to an embodiment of the present application;

fig. 8 is a structural diagram of another data transmission device according to an embodiment of the present application;

fig. 9 is a structural diagram of another data transmission device according to an embodiment of the present application.

Detailed Description

Software Defined Networking (SDN) is a novel Network innovation architecture proposed by the university of stanford research group of america, and its core technology OpenFlow separates a Network device control plane from a data plane, thereby realizing flexible control of data traffic in a Network and providing a good platform for application innovation of a core Network. If the SDN is combined with the PTN in the existing transmission Network, a Software defined Packet Transport Network (SPTN) is formed, the SPTN is the evolution and upgrade of the PTN, and the intelligent scheduling capability of Network resources and the relation between flattened clients and the Network resources can be further enhanced through open application and service, so that the operation and maintenance management and the service operation efficiency are improved.

The method and the device improve the existing network architecture, and a wireless side management controller, a transmission side upper layer controller and a plurality of transmission side lower layer controllers are added, wherein the wireless side management controller can monitor the communication requirements of a plurality of base stations, can analyze the communication requirements of the plurality of base stations, and determines the optimal interconnection scheme between the base stations or between the base stations and an EPC entity.

The embodiments of the present application will be described in further detail with reference to the drawings attached hereto.

Fig. 3 is a schematic diagram of a data transmission system 30 according to an embodiment of the present invention.

A first network side node 301, configured to send a first interconnection signaling to a wireless side management controller; the first interconnection signaling is used for indicating that the first network side node needs to establish communication connection with the second network side node.

In a specific implementation process, the first network side node may be a base station, and at this time, the base station may integrate and analyze interconnection information between itself and other base stations/EPC entities according to received related information sent by the terminal device, and may generate a first interconnection signaling according to the interconnection information, and further report the first interconnection signaling to the wireless control management unit. In addition, since the connection information of the base station may be changed constantly, the base station may periodically transmit the first connection signaling to the radio-side management controller.

The wireless side management controller 302 is configured to send, based on the received first interconnection signaling, first interconnection indication information to a transmission side upper layer controller, where the first interconnection indication information is used to indicate that a data transmission path between a first network side node and a second network side node is established.

In a specific implementation process, after receiving the first interconnection signaling, the wireless side management controller may send first interconnection indication information to the transmission side upper controller in response to a communication requirement of the first network side node, so as to instruct the transmission side upper controller to establish a data transmission path for communication between the first network side node and the second network side node.

In addition, the wireless side management controller may also predict a communication demand of the first network side node based on a first interconnection signaling sent by the first network side node within a period of time, and establish a data transmission path for the first network side node based on the predicted communication demand between the first network side node and the second network side node.

A transmission-side upper layer controller 303, configured to determine a data transmission path between the first network-side node and the second network-side node based on the received first interconnection indication information.

In a specific implementation process, if the second network side node is a base station or a temporary EPC entity located in an access stratum, the transmission side upper controller may determine, based on the first interconnection indication information sent by the radio side management controller, that a data transmission path between the first network side node and the second network side node may be composed of only an access stratum transmission network element. At this time, data transmission between the first network side node and the second network side node may be performed in a detour manner in the access layer (a path shown by a dotted line in fig. 3) without passing through a transmission network element of the convergence layer and the core layer, so that delay in interconnection between the first network side node and the second network side node may be effectively alleviated, and bandwidth resources of the convergence layer and the core layer may be saved.

A transmission side lower layer controller 304, configured to collect network topology structures of multiple transmission network elements within the jurisdiction range of the transmission side lower layer controller, and report the network topology structures to the transmission side upper layer controller

Preferably, the lower controller of the transmission side may further determine whether the network topology structure of the transmission network element in its own jurisdiction area changes by using a topology discovery protocol, and when it is determined that the network topology structure of the transmission network element in its own jurisdiction area changes, the updated network topology structure in the jurisdiction area of the lower controller of the transmission side may be newly collected, and the updated network topology structure is reported to the upper controller of the transmission side.

In the specific implementation process, the lower controller of the transmission side is also used for receiving the boundary path information sent by the upper controller of the transmission side; the boundary path information includes a plurality of boundary transmission network element information, the boundary transmission network element is a transmission network element located at the boundary of the transmission side lower layer controller, further, the transmission side lower layer controller determines the internal path information of the transmission side lower layer controller based on the boundary path information, and sends the internal path information to the transmission side upper layer controller, and the internal path information includes the internal transmission network element information of the boundary transmission network element connected with the transmission side lower layer controller.

Correspondingly, the transmission-side upper controller is specifically configured to determine a data transmission path (a path shown by a thick line in fig. 3) between the first network-side node and the second network-side node according to the internal path information reported by each transmission-side lower controller and the boundary path information issued by the transmission-side upper controller.

And the transmitting network element 305 is configured to transmit data between the first network-side node and the second network-side node based on the received data transmission path.

And a second network side node 306, configured to receive, based on the above transmission network element, the data sent by the first network side node.

In addition, in a specific implementation process, when receiving an interconnection signaling sent by a third network side node, the wireless side management controller may further generate the most reasonable interconnection indication information for the communication requirement of the third network side node by combining the already determined interconnection indication information of the first network side node and the second network side node.

Specifically, when the third network-side node needs to establish a communication connection with the second network-side node, the second interconnection signaling may be sent to the wireless-side management controller. After receiving the second interconnection signaling, the wireless side management controller may send, to the transmission side upper controller, second interconnection indication information based on the second interconnection signaling and information that a communication connection has been established between the second network side node and the first network side node, where the second interconnection indication information is used to indicate that a data transmission path between the third network side node and the first network side node is established, and further, the transmission side upper controller may determine, based on the received second interconnection indication information, a data transmission path between the third network side node and the first network side node. Therefore, only a data transmission path needs to be established between the third network side node and the first network side node, and the third network side node can multiplex the established data transmission path between the second network side node and the first network side node, so that not only can the bandwidth resource of the transmission side network be fully utilized, but also the operation that the transmission side upper layer controller repeatedly determines the transmission path can be reduced.

Preferably, when the wireless side management controller receives a plurality of interconnection signaling sent by each network side node, the wireless side management controller can also count and analyze interconnection needs of each network side node, so as to comb out more optimal interconnection need information among each network side node.

In a specific implementation process, if the wireless side management controller receives the interconnection signaling sent by each of the plurality of network side nodes, the interconnection information of the plurality of network side nodes may also be determined based on the received interconnection signaling, a preset interconnection request response rule, connection information that has been established by the plurality of network side nodes, and connection information that has been established by target network side nodes that respectively request connections with the plurality of network side nodes, where the interconnection information of each network side node includes information of other network side nodes connected with the network side node. The preset interconnection request response rules are not listed one by one, and can be adjusted according to the actual interconnection conditions of a plurality of network side nodes; the connection information that has been established by the plurality of network-side nodes and the connection information that has been established by the target network-side node that requests connection with the plurality of network-side nodes respectively refer to the connection information that is currently valid by the plurality of network-side nodes, and do not include the connection information of the network-side node that the wireless-side management controller has instructed to tear down.

Further, the wireless side management controller sends interconnection indication information to the transmission side upper layer controller based on the determined interconnection information, so that the transmission side upper layer controller determines data transmission paths for the plurality of network side nodes.

The above procedure will be described below by taking a plurality of network side nodes as base stations as an example.

Suppose that the wireless side management controller receives the interconnection signaling sent by the base stations 3, 4 and 5 respectively, determines that the base stations 3 and 5 need to establish connection with the base station 1, the base station 4 needs to establish connection with the base stations 1 and 2 respectively, and the base station 1 has already established effective connection with the base station 2. Then, the radio side management controller may analyze these connection requirements, for example, the base station 4 needs to establish a connection with the base station 1 and the base station 2 respectively, and the base station 1 already establishes an effective connection with the base station 2, then the base station 4 may be directly connected with the base station 1, and thus the base station 1 needs to establish a connection with both the base station 4 and the base station 2. If the maximum number of connections that can be established by the base station 1 at the same time is 3, then the connection requirements of the base station 1 for the base stations 3 and 5 can only meet one of the requirements, at this time, the data transmission quantity of the base stations 3 and 5 can be analyzed, if the data transmission quantity of the base station 3 is determined to be large, the connection between the base station 3 and the base station 1 is established, and the connection requirement of the base station 5 is refused or delayed to respond; and if the data transmission quantity of the base station 5 is determined to be larger, establishing connection between the base station 5 and the base station 1, and refusing or delaying to respond to the connection requirement of the base station 3.

In the specific implementation process, in order to make the data transmission between the first network side node and the second network side node more flexible, the bandwidth resource of the transmission side network is also better utilized. The wireless side management controller can also send a removal instruction for instructing the removal of the data transmission path to the transmission side upper layer controller when determining that the communication between the first network side node and the second network side node is finished, and accordingly, the transmission side upper layer controller can remove the data transmission path between the first network side node and the second network side node based on the received removal instruction, so that the establishment and the removal of the data transmission path between the first network side node and the second network side node are more flexible and faster, and the data transmission amount of the transmission side network can be increased on the premise of not increasing transmission network elements.

Example two

The data transmission method in the embodiment of the present application is further described below with reference to the drawings of the specification.

As shown in fig. 4, a schematic diagram of a connection relationship among a first network side node, a second network side node, a transmission side upper layer controller, a transmission side lower layer controller, and a transmission network element in this embodiment is shown, where a base station 1 may represent the first network side node; the base station 2, the temporary EPC and the EPC can all represent a second network side node (the temporary EPC is located in the access stratum, and the EPC is located in the core layer); the PTN device may represent a transport network element.

In a specific implementation process, the transmission-side network mainly includes an access layer, a convergence layer, and a core layer, and therefore, at least one transmission-side lower-layer controller may be respectively disposed in the access layer, the convergence layer, and the core layer, so that each transmission-side lower-layer controller manages transmission network elements within its own jurisdiction, and all transmission-side lower-layer controllers are managed by one transmission-side upper-layer controller. Preferably, the network topology of each transmission network element in the transmission side network may be established in advance.

Specifically, each lower-layer controller of the transmission side collects network topology structures of a plurality of transmission network elements in the jurisdiction range of the lower-layer controller, and then reports the collected network topology structures to the upper-layer controller of the transmission side. In addition, because the topology structure of the whole transmission side network may possibly change, the lower layer controller of the transmission side may also determine whether the network topology structure of the transmission network element in its own jurisdiction range changes by using a topology discovery protocol, and when it is determined that the network topology structure of the transmission network element in its own jurisdiction range changes, the updated network topology structure in the jurisdiction range of the lower layer controller of the transmission side may be newly collected, and the updated network topology structure is reported to the upper layer controller of the transmission side.

Further, the upper layer controller of the transmission side forms a network topology structure related to the network of the transmission side according to the network topology structure reported by the lower layer controller of the transmission side in the jurisdiction range of the upper layer controller of the transmission side, so as to determine a data transmission path for the interconnection between the base station and the base station/EPC entity.

The following describes the interconnection between the base station and between the base station and the EPC entity in this embodiment.

1) And the base station is interconnected with the base station.

In a specific implementation process, when the communication connection between the terminal device and the base station 1 needs to be switched to the base station 2, the base station 1 may analyze that it needs to be interconnected with the base station 2 according to the communication switching request of the terminal device, further, generate a first interconnection signaling based on the interconnection information, and report the first interconnection signaling to the wireless control management unit.

Further, the wireless side management controller may send the first interconnection indication information to the transmission side upper layer controller after receiving the first interconnection signaling, so as to instruct the transmission side upper layer controller to establish a data transmission path for communication between the base station 1 and the base station 2.

Further, after receiving the first interconnection indication information, the upper layer controller on the transmission side may determine a data transmission path between the base station 1 and the base station 2, which is composed of access stratum transmission network elements. In this way, data transmission between the base station 1 and the base station 2 can be circuitous in the access stratum (a path indicated by a ring line of the access stratum in fig. 4) without passing through the aggregation stratum and the core layer, so that not only can delay in interconnection between the base station 1 and the base station 2 be effectively relieved, but also bandwidth resources of the aggregation stratum and the core layer can be saved.

In a specific implementation process, after the base station 1 and the base station 2 establish a data transmission path in the access stratum transmission network element, if the radio side management controller receives an interconnection signaling sent by the base station 3 again, the radio side management controller may combine the determined interconnection indication information of the base station 1 and the base station 2, and generate the interconnection indication information for the base station 3 by considering the interface utilization condition of each transmission network element in the access stratum.

Specifically, when the base station 3 needs to establish a communication connection with the base station 2, the second interconnection signaling may be transmitted to the wireless-side management controller. After receiving the second interconnection signaling, the wireless side management controller may send second interconnection indication information to the transmission side upper layer controller based on the second interconnection signaling and information that the communication connection between the base station 1 and the base station 2 has been established, where the second interconnection indication information is used to indicate that a data transmission path between the base station 3 and the base station 1 is established, and further, the transmission side upper layer controller may determine the data transmission path between the base station 3 and the base station 1 based on the received second interconnection indication information. Thus, only a data transmission path needs to be established between the base station 3 and the base station 1, the base station 3 can multiplex the data transmission path already established between the base station 2 and the base station 1, and further, bandwidth resources of a transmission side network are fully utilized.

2) The base station is interconnected with the EPC.

In a service scenario of Mobile Edge Computing (MEC), some areas have temporary data transmission requirements, and at this time, a distributed SGW needs to be used for data transmission to ensure a low service delay, so that if a traditional transmission-side network architecture is used to temporarily establish a data transmission path from a base station to a certain temporary EPC entity, the efficiency is extremely low and the data transmission path is not easily removed.

In a specific implementation process, when the EPC-ephemeral entity is located in the access stratum (shown in fig. 4), a process of establishing a data transmission path between the base station and the EPC-ephemeral entity is the same as the process of establishing a data transmission path between the base station and the base station, and details thereof are not repeated here.

In addition, the temporary EPC entity in the embodiment of the present application may also be located in the convergence layer or the core layer. At this time, since path determination between the plurality of transmission-side lower layer controllers is involved when the base station establishes the data transmission path with the temporary EPC/EPC entity, the procedure of establishing the data transmission path between the base station and the EPC entity will be described below, unlike the procedure of establishing the data transmission path between the base station and the base station in the lower layer controller of the access stratum.

Specifically, as shown in fig. 5, a schematic diagram of a transmission network element included in each transmission-side lower layer controller is shown, and it is assumed that a base station is connected to the transmission network element denoted by reference numeral 1, and an EPC entity is connected to the transmission network element denoted by reference numeral 14. When determining a data transmission path between a base station and an EPC entity, a transmission-side upper layer controller first determines multiple groups of boundary transmission network element information, for example, the determined boundary transmission network element information includes two groups of boundary network element information: 1. 2, 5, 7, 10, 12, 14 and 1, 3, 4, 9, 10, 12, 14, and send the information of these boundary transmission network elements to each transmission-side lower layer controller, after each transmission-side lower layer controller receives the information of these boundary transmission network elements, it can respectively combine the use situation of each transmission network element within its own jurisdiction to determine the internal transmission path, for example, for the boundary network element: 1. 2, 5, 7, 10, 12, 14, the transmission path determined by the lower layer controller of the access stratum is 1 → 2; the transmission path determined by the lower layer controller of the convergence layer is 5 → 8 → 6 → 7 → 10, or, 5 → 6 → 7 → 10; the transmission path determined by the lower layer controller of the core layer is 12 → 14; and for border network elements: 1. 3, 4, 9, 10, 12, 14, the transmission path determined by the lower layer controller of the access stratum is 1 → 3 → 4; the transmission path determined by the lower layer controller of the convergence layer is 9 → 10; the transmission path determined by the lower layer controller of the core layer is 12 → 14. After determining the internal paths, each transmission-side lower-layer controller sends the internal path information to the transmission-side upper-layer controller, so that the transmission-side upper-layer controller can obtain 3 pieces of path information: 1 → 2 → 5 → 8 → 6 → 7 → 10 → 12 → 14, 1 → 2 → 6 → 7 → 10 → 12 → 14, and 1 → 3 → 9 → 10 → 12 → 14, further, the transmission side upper layer controller selects an optimal one of the 3 paths as a data transmission path between the base station and the EPC entity based on a certain selection criterion; the selection criterion may be that the data transmission path is shortest, or that the utilization rate of the transmission network element is maximum.

In the specific implementation process, the process of establishing the data transmission path between the base station and the temporary EPC (not located in the access stratum) is similar to the process of establishing the data transmission path between the base station and the EPC entity, and details are not repeated herein.

In addition, when the base station establishes communication connection with the base station or a temporary EPC entity located in an access stratum, data transmitted between the base station and the base station/temporary EPC entity is only detoured in the access stratum, and at this time, data transmission may be performed by using a Virtual Local Area Network (VLAN); when a base station establishes communication connection with a temporary EPC/EPC entity positioned at an access layer or a core layer, a plurality of transmission-side lower layer controllers are involved, and at the moment, data transmission can still be carried out by using the VLAN at the access layer, and data transmission can be carried out by using a routing table at an aggregation layer and the core layer.

In the implementation process, in order to make data transmission between the base station and the base station/EPC entity more flexible, the bandwidth resource of the whole network is better utilized. The wireless side management controller may periodically receive the interconnection signaling sent by each base station, and if the interconnection signaling sent by the base station 1 and interconnected with the base station 2 is not received within a preset time period, for example, 10 minutes, it may be considered that the communication requirement of the base station 1 and the base station 2 is finished, at this time, the wireless side management controller may send a removal instruction to the transmission side upper layer controller, where the removal instruction is used to instruct the transmission side upper layer controller to remove the data transmission path between the base station 1 and the base station 2.

Based on the same inventive concept, the embodiment of the present application further provides a plurality of data transmission devices corresponding to the data transmission method, and because the principles of solving the problems of the devices are similar to the data transmission method in the embodiment of the present application, the implementation of the devices can refer to the implementation of the method, and repeated details are not repeated.

As shown in fig. 6, a structure of a data transmission device 60 provided in an embodiment of the present application is located in a wireless side management controller, and the device includes:

an interconnection signaling receiving module 601, configured to receive a first interconnection signaling sent by a first network side node; the first interconnection signaling is used for indicating that the first network side node needs to establish communication connection with a second network side node;

an interconnection indication sending module 602, configured to send, based on the received first interconnection signaling, first interconnection indication information to a transmission-side upper controller, where the first interconnection indication information is used to indicate that a data transmission path between a first network-side node and a second network-side node is established.

Optionally, the apparatus further comprises:

a removing instruction sending module 603, configured to send, to the upper controller on the transmission side, a removing instruction that instructs to remove the data transmission path between the first network-side node and the second network-side node when it is determined that communication between the first network-side node and the second network-side node is finished.

Optionally, the interconnection signaling receiving module 601 is further configured to:

receiving a second interconnection signaling sent by a third network side node, wherein the second interconnection signaling is used for indicating that the third network side node needs to establish communication connection with a second network side node;

the interconnection indication sending module 602 is further configured to:

and sending second interconnection indication information to a transmission side upper layer controller based on the received second interconnection signaling and the information of the established communication connection between the second network side node and the first network side node, wherein the second interconnection indication information is used for indicating the establishment of a data transmission path between the third network side node and the first network side node.

As shown in fig. 7, a structure of another data transmission device 70 provided in the embodiment of the present application is located in a transmission-side upper controller, and includes:

an interconnection indication receiving module 701, configured to receive first interconnection indication information sent by a wireless side management controller;

a transmission path determining module 702, configured to determine a data transmission path between the first network-side node and the second network-side node based on the received first interconnection indication information.

Optionally, the transmission path determining module 702 is specifically configured to:

issuing boundary path information to a lower layer controller of a transmission side; the boundary path information comprises a plurality of boundary transmission network element information, and the boundary transmission network element is a transmission network element positioned at the boundary of a lower-layer controller at a transmission side;

receiving internal path information sent by a lower layer controller of a transmission side based on the boundary path information; wherein, the internal path information includes internal transmission network element information of a boundary transmission network element connected with the lower layer controller of the transmission side;

and determining the data transmission path according to the internal path information and the boundary path information.

Optionally, the apparatus further comprises:

a removal instruction receiving module 703, configured to receive a removal instruction that instructs to remove a data transmission path and is sent by a wireless side management controller; and based on the received removing instruction, removing the data transmission path between the first network side node and the second network side node.

Optionally, when the second network side node is a base station or a temporary core network entity located in an access stratum, the transmission path determining module 702 is specifically configured to:

Optionally, the interconnection indication receiving module 701 is further configured to:

receiving interconnection indication information sent by a wireless side management controller, wherein the interconnection indication information is used for indicating a transmission side upper layer controller to determine a data transmission path for a plurality of network side nodes; the interconnection indication information is determined based on the received interconnection signaling respectively sent by the plurality of network side nodes, a preset interconnection request response rule, the connection information already established by the plurality of network side nodes, and the connection information already established by the target network side nodes respectively requested to be connected by the plurality of network side nodes.

The transmission path determination module 702 is further configured to:

and determining data transmission paths for a plurality of network side nodes based on the received interconnection indication information.

As shown in fig. 8, a structure of a data transmission apparatus 80 provided in an embodiment of the present application is a data transmission apparatus, where the apparatus is located in a lower controller on a transmission side, and includes:

a topology structure collecting module 801, configured to collect network topology structures of multiple transmission network elements within the jurisdiction range of a lower controller on a transmission side;

a topology reporting module 802, configured to report the network topology to the upper controller on the transmission side.

Optionally, the apparatus further comprises:

a transmission path determining module 803, configured to receive boundary path information sent by an upper controller on a transmission side; the boundary path information comprises a plurality of boundary transmission network element information, and the boundary transmission network element is a transmission network element positioned at the boundary of a lower-layer controller at a transmission side;

determining internal path information of a lower controller of a transmission side based on the boundary path information, and transmitting the internal path information to an upper controller of the transmission side; wherein, the internal path information includes internal transmission network element information of a boundary transmission network element connected with the lower layer controller of the transmission side.

As shown in fig. 9, a structure of another data transmission apparatus 90 provided in an embodiment of the present application is a wireless side management controller, including:

a receiving module 901, configured to receive interconnection signaling sent by multiple network side nodes respectively;

an interconnection information determining module 902, configured to determine interconnection information of multiple network-side nodes based on the received interconnection signaling, a preset interconnection request response rule, connection information that has been established by multiple network-side nodes, and connection information that has been established by target network-side nodes to which the multiple network-side nodes respectively request to connect, where the interconnection information of each network-side node includes information of other network-side nodes connected to the network-side node;

a sending module 903, configured to send interconnection indication information to the transmission-side upper controller based on the determined interconnection information, where the interconnection indication information is used to instruct the transmission-side upper controller to determine a data transmission path for a plurality of network-side nodes.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A data transmission system, comprising:

a transmission side upper layer controller, configured to determine a data transmission path between the first network side node and a second network side node based on the received first interconnection indication information;

the transmission side lower layer controller is used for collecting network topology structures of a plurality of transmission network elements in the jurisdiction range of the transmission side lower layer controller and reporting the network topology structures to the transmission side upper layer controller;

the transmission side upper layer controller is specifically configured to: determining a data transmission path between the first network side node and the second network side node based on the network topology of the transmission network element reported by the transmission side lower layer controller and the received first interconnection indication information;

the transmission side lower layer controller is also used for receiving the boundary path information issued by the transmission side upper layer controller; the boundary path information comprises a plurality of boundary transmission network element information, and the boundary transmission network element is a transmission network element positioned at the boundary of a lower-layer controller at a transmission side; determining internal path information of the transmission side lower layer controller based on the boundary path information, and sending the internal path information to the transmission side upper layer controller; the internal path information comprises internal transmission network element information of a boundary transmission network element connected with the lower layer controller of the transmission side;

the transmission side upper layer controller is specifically configured to: and determining the data transmission path according to the internal path information reported by the lower layer controller of the transmission side and the boundary path information.

2. The system of claim 1, wherein the wireless-side management controller is further configured to:

3. The system of claim 1, wherein the system further comprises:

the transmission side lower layer controller is also used for receiving the data transmission path issued by the transmission side upper layer controller and sending the data transmission path to each transmission network element in the data transmission path;

4. The system of claim 1, wherein the transmit-side lower-layer controller is further to:

5. The system according to any one of claims 1 to 4, wherein when the second network side node is a base station or a temporary core network entity located in an access stratum, the transmission side upper layer controller is specifically configured to:

6. The system of claim 5, wherein the wireless-side management controller is further to:

7. A method of data transmission, the method comprising:

the transmission side upper layer controller determines a data transmission path between the first network side node and a second network side node based on the received first interconnection indication information;

before the transmission-side upper controller determines the data transmission path between the first network-side node and the second network-side node, the method further includes:

the transmission side upper layer controller determines a data transmission path between the first network side node and the second network side node based on the network topology of the transmission network element reported by the transmission side lower layer controller and the received first interconnection indication information;

the method for determining the data transmission path between the first network side node and the second network side node by the transmission side upper layer controller comprises the following steps:

a transmission side lower layer controller receives boundary path information issued by the transmission side upper layer controller; the boundary path information comprises a plurality of boundary transmission network element information, and the boundary transmission network element is a transmission network element positioned at the boundary of a lower-layer controller at a transmission side;

8. The method of claim 7, wherein the method further comprises:

9. The method of claim 7, wherein the method further comprises:

10. The method according to any of claims 7 to 9, wherein the second network side node is a base station or a temporary core network entity located in an access stratum; the transmission-side upper controller determines a data transmission path between the first network-side node and a second network-side node based on the received first interconnection indication information, including:

11. The method of claim 7, wherein the method further comprises:

12. A data transmission apparatus, wherein the apparatus is located in a wireless side management controller, comprising:

an interconnection indication sending module, configured to send first interconnection indication information to a transmission side upper controller based on the received first interconnection signaling, for instructing the establishment of a data transmission path between the first network-side node and a second network-side node, so that the transmission-side upper controller determines a data transmission path between the first network-side node and a second network-side node based on the received first interconnection indication information, wherein the data transmission path is determined by the transmission side upper layer controller based on the network topology of the transmission network element reported by the transmission side lower layer controller and the received first interconnection indication information, the network topology structure is a network topology structure of a plurality of transmission network elements collected by the transmission side lower layer controller within the jurisdiction range of the transmission side lower layer controller; the data transmission path or the transmission side upper layer controller is determined according to internal path information reported by the transmission side lower layer controller and boundary path information, wherein the boundary path information is issued to the transmission side lower layer controller by the transmission side upper layer controller, the boundary path information comprises a plurality of boundary transmission network element information, and the boundary transmission network element is a transmission network element positioned at the boundary of the transmission side lower layer controller; the internal path information of the transmission-side lower layer controller is determined by the transmission-side lower layer controller based on the boundary path information; the internal path information includes internal transmission network element information of a boundary transmission network element connected to the lower layer controller of the transmission side.

13. A data transmission apparatus, which is provided in a transmission-side upper controller, comprising:

a transmission path determining module, configured to determine a data transmission path between a first network-side node and a second network-side node based on the received first interconnection indication information;

the transmission path determining module is specifically configured to determine a data transmission path between the first network side node and the second network side node based on a network topology of the transmission network element reported by a transmission side lower layer controller and the received first interconnection indication information, where the network topology is a network topology of a plurality of transmission network elements collected by the transmission side lower layer controller within the jurisdiction of the transmission side lower layer controller;

the transmission path determining module is specifically configured to determine the data transmission path according to internal path information and boundary path information reported by the transmission side lower layer controller, where the boundary path information is issued by the transmission side upper layer controller to the transmission side lower layer controller, the boundary path information includes information of multiple boundary transmission network elements, and the boundary transmission network elements are transmission network elements located at a boundary of the transmission side lower layer controller; the internal path information of the transmission-side lower layer controller is determined by the transmission-side lower layer controller based on the boundary path information; the internal path information includes internal transmission network element information of a boundary transmission network element connected to the lower layer controller of the transmission side.

14. A data transmission apparatus, which is provided in a transmission-side lower layer controller, comprising:

a reporting module, configured to report the network topology to a transmission side upper controller;

the processing module is used for receiving the boundary path information issued by the upper layer controller at the transmission side; the boundary path information comprises a plurality of boundary transmission network element information, and the boundary transmission network element is a transmission network element positioned at the boundary of a lower-layer controller at a transmission side; determining internal path information of the transmission side lower layer controller based on the boundary path information, and sending the internal path information to the transmission side upper layer controller, so that the transmission side upper layer controller determines the data transmission path according to the internal path information reported by the transmission side lower layer controller and the boundary path information; the internal path information includes internal transmission network element information of a boundary transmission network element connected to the lower layer controller of the transmission side.

15. A data transmission apparatus, wherein the apparatus is located in a wireless side management controller, comprising:

an interconnection information determining module, configured to determine interconnection information of the plurality of network-side nodes based on the received interconnection signaling, a preset interconnection request response rule, connection information that has been established by the plurality of network-side nodes, and connection information that has been established by target network-side nodes to which the plurality of network-side nodes respectively request to connect, where the interconnection information of each network-side node includes information of other network-side nodes connected to the network-side node;

a sending module, configured to send interconnection indication information to the transmission-side upper controller based on the determined interconnection information, so as to instruct the transmission-side upper controller to determine data transmission paths for the plurality of network-side nodes.