Patent Application
20190150210
The present invention relates to a communication system including a datacenter, and more particularly to a communication technique and a communication control technique for the same.
In recent years, various services such as cloud services are provided by many mobile virtual network operators (MVNO: Mobile Virtual Network Operator). In general, an MVNO does not own a wireless communication facility and therefore, in many cases, leases an access network and a core network from a mobile network operator (MNO: Mobile Network Operator). For example, an MVNO leases base stations and a core network EPC (Evolved Packet Core) owned by an MNO and provides services to users' mobile terminals via the Internet as shown in
MNOs have been promoting network functions virtualization (NFV: Network Functions Virtualization) and software-defined networking (SDN: Software-Defined Networking) in order to cope with increasing facilities and operation costs along with a recent increase in traffic volume. In such SDN/NFV environments, the virtualization of a core network has also been advanced, and it is conceivable that a virtual EPC (vEPC: virtual EPC) will be constructed within, for example, a datacenter of a cloud provider in the future.
If a virtual network is constructed within a datacenter, since an MVNO does not own a wireless communication infrastructure as described above, the MVNO needs to use an existing MNO's access network to be accessed from a terminal. If a plurality of MNOs own their respective access networks in particular, it is preferable that a virtual network within a datacenter be shared among the plurality of access networks.
Moreover, if an MVNO is a cloud provider, it is necessary that its cloud computing and a carrier's core network coexist within the cloud provider's own datacenter. Accordingly, traffic from cloud users and the carrier's traffic are accommodated concurrently, which brings about a problem of segregation between the cloud computing and the core network.
Accordingly, an object of the present invention is to provide a datacenter, a communication apparatus, a communication method, and a communication control method in a communication system that enable the efficient use of a datacenter and a virtual network constructed within the datacenter.
A communication system according to the present invention is characterized by including: a plurality of wireless communication facilities owned by a plurality of network operators, respectively; and a datacenter in which a virtual core network is constructed, wherein the virtual core network implements mobile communication functions by using the plurality of wireless communication facilities.
A datacenter according to the present invention is characterized by including: a gateway means for connecting to a plurality of wireless communication facilities owned by a plurality of network operators, respectively, over a network; and a computing means on which a virtual core network is constructed, wherein the virtual core network implements mobile communication functions by using the wireless communication facilities connected via the gateway means.
A communication apparatus according to the present invention is a communication apparatus within a datacenter and is characterized by including: a virtual core network that implements mobile communication functions by using a plurality of wireless communication facilities owned by a plurality of network operators, respectively; and a virtual path termination means for protecting traffic between the virtual core network and a terminal connected to each wireless communication facility.
A communication apparatus according to the present invention is a communication apparatus owned by a network operator and is characterized by including: at least one base station wirelessly connected to a terminal; and a gateway means for performing communication over a network with a virtual core network within a datacenter owned by another network operator, wherein mobile communication functions are implemented by the virtual core network and the at least one base station.
A communication method according to the present invention is characterized by including: by a plurality of network operators, owning a plurality of wireless communication facilities, respectively; within a datacenter, constructing a virtual core network that implements mobile communication functions by using the plurality of wireless communication facilities; and by the virtual core network, receiving traffic from the plurality of wireless communication facilities.
A communication control method according to the present invention is a communication control method in a datacenter and is characterized by including: by a gateway means, connecting to a plurality of wireless communication facilities owned by a plurality of network operators, respectively, over a network; and by a computing means, constructing a virtual core network that implements mobile communication functions by using the wireless communication facilities connected via the gateway means.
A communication control method according to the present invention is a communication control method for a communication apparatus within a datacenter and is characterized by including: by a virtual core network within the datacenter, implementing mobile communication functions by using a plurality of wireless communication facilities owned by a plurality of network operators, respectively; and by a virtual path termination means, protecting traffic between the virtual core network and a terminal connected to each wireless communication facility.
A communication control method according to the present invention is a communication control method for a communication apparatus owned by a network operator and is characterized by including: by at least one base station, wirelessly connecting to a terminal; by a gateway means, performing communication over a network with a virtual core network within a datacenter owned by another network operator; and by the virtual core network and the at least one base station, implementing mobile communication functions.
As described above, according to the present invention, a virtual core network that implements mobile communication functions by using a plurality of wireless communication facilities owned by a plurality of network operators, respectively, is constructed within a datacenter, whereby it is possible to enhance the versatility of the datacenter and the virtual network constructed within it, and thus to achieve the efficient use of the virtual network.
In communication systems according to exemplary embodiments of the present invention, a mobile virtual network operator (hereinafter, abbreviated as MVNO) constructs a virtual core network within a datacenter of its own, and implements mobile communication network functions by using wireless communication facilities owned by mobile network operators (hereinafter, abbreviated as MNO).
In a datacenter according to an exemplary embodiment of the present invention, a virtual core network constructed within it can process traffic from a plurality of MNOs' wireless communication facilities. Moreover, in a datacenter according to another exemplary embodiment of the present invention, a virtual core network and another virtual network that provides a cloud service are independently constructed, and traffic is distributed such that traffic from a plurality of MNOs' wireless communication facilities is transferred to the virtual core network, and traffic from users who use the cloud service is transferred to the other virtual network. Hereinafter, exemplary embodiments and examples of the present invention will be described in detail with reference to drawings.
According to a first exemplary embodiment of the present invention, a virtual core network is constructed within a datacenter, and the virtual core network within the datacenter performs communication control to process traffic from wireless communication facilities provided by a plurality of MNOs, allowing the versatility of the virtual core network to be enhanced.
As illustrated in
The wireless communication facility 10A is part of the access network of a mobile communication network owned by the MNO(A) and is assumed to include at least a base station 101 and a gateway 102. Although one base station 101 is depicted here, an access network may be constructed including a plurality of base stations 101 (e.g., eUTRAN (Evolved Universal Terrestrial Radio Network)). Note that if the MNO(A) owns a core network, it is assumed that access from a terminal A does not pass through the core network of the MNO(A) by the gateway 102 offloading the MNO(A). The base station 101 performs wireless communication with the terminal A of a subscriber to the MNO(A). The gateway 102 connects to the datacenter 20 via the network 30. It is assumed that the wireless communication facility 10B basically has a similar configuration. Moreover, the MVNO's subscriber terminal (a terminal C) can also connect to the datacenter 20 via the network 30 by using the wireless communication facility of an MNO.
The datacenter 20 has a computing resource such as a computer, constructing a virtual network 201, which implements core network functions, and a gateway 202, which connects to the network 30. Preferably, the gateway 202 forms a dedicated physical channel, or a protected logical channel passing over the network 30, with the gateway 102 of each wireless communication facility. Thereby, the base station of each wireless communication facility and the virtual network 201 can be connected, and the virtual network 201 is thus able to accommodate the radio access networks of the different MNOs. Note that the virtual network 201 can be constructed by using resources which are, for example, a virtual machine, a switch, a router and the like configured on a physical server.
The network 30 is an IP network such as the Internet, a RAN (Radio Access Network), dedicated lines physically isolated from other networks, or the like that connects the wireless communication facilities 10A, 10B and other wireless communication facilities to the datacenter 20. Moreover, a network 40, which is connected to the virtual network 201, is an external packet network or an IP Network such as the Internet.
Next, a description will be given of the datacenter 20 in which the radio access networks of the different MNOs are accommodated in the virtual network 201. However, blocks having similar functions to those of the communication system shown in
As illustrated in
The vEPC 201 is implemented by, for example, a virtual machine on a server within the datacenter 20, per appliance or per individual function included in each appliance. The following are examples of such functions.
Function of managing subscriber information in the communication system. RADIUS (Remote Authorization Dial In Service):
For example, the terminal A (the same applies to the terminals B and C) can access the Internet 40 via the vEPC 201 constructed within the datacenter 20 of the cloud provider by wirelessly connecting to the base station 101 of the carrier A (MNO(A)) to which this terminal subscribes. In case of EPS (Evolved Packet System) using E-UTRAN, the terminal A establishes a bearer (virtual path) with the vEPC 201 via the base station (eNodeB) 101 it has connected to. However, in the present example, the bearer is terminated between the terminal A and the terminal bearer termination section 203 disposed at the front stage of the vEPC 201, whereby the traffic with the terminal is protected end-to-end. Since a bearer is provided by encapsulating a packet, the terminal bearer termination section 203 can identify the access network of each carrier from the outer header of a packet. Hereinafter, operation in the first example will be described with reference to
Referring to
Note that the terminal bearer termination section 203 may be provided within the gateway 202 or the vEPC 201.
As illustrated in
The tunnel termination section 2021 terminates a tunnel 301 between itself and the wireless communication facility 10A owned by the carrier A and a tunnel 302 between itself and the wireless communication facility 10B owned by the carrier B individually. Note that if there is another wireless communication facility owned by the cloud provider, the tunnel termination section 2021 may terminate a tunnel between itself and that wireless communication facility. Accordingly, the gateway processing section 2022 can identify a packet from each radio access network and forward them to the vEPC 201. In this manner, traffic with a terminal is protected by means of a tunnel. Note that the vEPC 201 is as described in the first example.
As illustrated in
As described above, according to the first exemplary embodiment of the present invention, a virtual core network constructed within a datacenter can identifiably process traffic from radio access facilities provided by a plurality of MNOs. Accordingly, it is possible to implement the highly versatile datacenter supporting the radio access networks of the different MNOs and thus to achieve the efficient use of the virtual core network.
According to a second exemplary embodiment of the present invention, a virtual core network for a carrier and a virtual network for providing a cloud service to users are independently constructed within a datacenter. Further, a distributing means is provided within the datacenter to divide and distribute traffic to either the virtual core network or the virtual network, whereby the versatility of the datacenter is enhanced.
As illustrated in
The wireless communication facility 10A is part of the access network of a mobile communication network owned by the MNO(A) and is assumed to include at least a base station 101 and a gateway 102. Although one base station 101 is depicted here, an access network may be constructed, including a plurality of base stations 101 (e.g., eUTRAN (Evolved Universal Terrestrial Radio Network). Moreover, the MNO(A) also owns a core network EPC(A), and access from a terminal A here can be offloaded by the gateway 102 or can be forwarded to the datacenter 21 via the core network EPC(A) of the MNO(A) as well. The base station 101 performs wireless communication with the terminal A of a subscriber to the MNO(A), and the gateway 102 connects to the datacenter 21 via the network 30. It is assumed that the wireless communication facility 10B basically has a similar configuration.
The network facility 12 owned by C company can allow a terminal 103 to connect to the network 30. The terminal 103 connects to the datacenter 21 via the network 30, thus becoming able to receive a cloud service.
The datacenter 21 has a computing resource such as a computer and is connected to the network 30 via a gateway 210, and further a plurality of virtual networks connected to the gateway 210 are constructed within it independently of each other. Here, a virtual network 211 is the virtual core network implementing core network functions, and a virtual network 212 is an enterprise network for cloud computing. The virtual network 212 is provided for each corporate user. Note that the virtual core network 211 and the virtual network 212 may be constructed by using resources such as, for example, a virtual machine, a switch, and a router configured on a physical server.
Preferably, the gateway 210 forms a dedicated physical channel, or a protected logical channel passing over the network 30, with the gateway 102 of each wireless communication facility. Thereby, the base station of each wireless communication facility and the virtual network 211 or 212 can be connected, and the virtual network 211 is thus able to accommodate the radio access networks of the different MNOs.
Moreover, in the present exemplary embodiment, it is assumed that the user of the terminal 103 has signed a contract for a cloud service provided by the virtual network 212, whereby the terminal 103 can access the virtual network 212 for cloud computing via the network facility 12 and the network 30. For example, if the user of the terminal 103 is a subscriber to the MNO(A), the terminal 103 can access the virtual network 212 via the wireless communication facility 10A, or also can access the virtual network 212 via a network 40 by connecting to the virtual network 211.
The network 30 is an IP network such as the Internet, a RAN (Radio Access Network), or the like that connects the wireless communication facilities 10A, 10B and network facility 12 to the datacenter 21. Moreover, the network 40 connected to the virtual networks 211 and 212 is an external packet network or an IP network such as the Internet.
Next, a system will be described as an example in which a virtual core network (vEPC) for a carrier, as the virtual network 211, and an enterprise network for proving a cloud service such as IaaS or PaaS, as the virtual network 212, are constructed within a datacenter.
As illustrated in
The gateway 210 includes a gateway processing section 2101 and a distributing section 2102, and the distributing section 2102 divides and distributes traffic for carrier and traffic of cloud users to the vEPC 211 and the cloud 212, respectively. The distributing of traffic by the distributing section 2102 can be performed per network or per communication facility, based on the identification of a source network ID, a destination, and/or a bearer or tunnel as described above. For example, the network ID or the identification of a tunnel can be performed by referring to part of a packet, or to an identifier indicating a network, user, service, or the like included in a packet, or alternatively to an input port number. Hereinafter, operation in the fourth example will be described with reference to
Referring to
When a tunnel is set up between the gateway 102 of the carrier-provided facility 10A and the gateway 210 of the datacenter 21 through a predetermined procedure (Operations S401 to S403) as illustrated in
For example, traffic for carrier offloaded by the gateway 102 is distributed to the vEPC 211 by the distributing section 2102 of the gateway 210 (Operation S410). Moreover, when traffic for carrier from the terminal A is addressed to the cloud 212 and passes through the core network EPC(A) of the carrier A, the distributing section 2102 of the gateway 210 distributes this traffic directly to its destination, the cloud 212 (Operation S411).
Furthermore, it is also possible that only part of the functions of the core network EPC(A) is constructed in the vEPC 211 and the core network EPC(A) is used for the rest of the functions. For example, when traffic for carrier from the terminal A passes through part of the functions of the core network EPC(A) of the carrier A, the distributing section 2102 of the gateway 210 distributes this traffic for carrier to the vEPC 211, whereby it is possible to have the traffic pass through the other EPC functions, and then send it to the network 40 (Operation S412).
As illustrated in
For example, traffic for cloud computing is directly distributed to the cloud 212 by the distributing section 2102 of the gateway 210 (Operation S510). Moreover, when access is made to the cloud 212 via EPC, traffic for cloud computing is distributed to the vEPC 211 by the distributing section 2102 of the gateway 210 (Operation S511) and forwarded to the cloud 212 from the vEPC 211 via the network 40 (Operation S512).
Next, examples of the path of traffic in the system shown in
Moreover, when traffic from the terminal A to the cloud 212 is forwarded to the EPC(A) of the carrier A without being offloaded, this traffic is forwarded to the cloud 212 in the datacenter 21 through a path 402. For example, when the source of traffic is the EPC(A) of the carrier A and the destination thereof is the cloud 212, the distributing section 2102 forwards this traffic to the cloud 212.
Note that when traffic whose destination is the cloud 212 is offloaded by the gateway 102, this traffic is forwarded to the vEPC 211 in the datacenter 21 through the path 401 and then forwarded to the cloud 212 via the network 40.
Furthermore, when the terminal 103 of a cloud user accesses the cloud 212 by using the network facility 12 owned by C company, traffic from the terminal 103 is forwarded to the cloud 212 in the datacenter 21 through a path 403. For example, when the source of traffic is C company's network 12 and the destination thereof is the cloud 212, the distributing section 2102 forwards this traffic to the cloud 212.
Further, as shown in
Note that in the fourth example, a bearer termination section may be provided to the datacenter 21 as in the first example shown in
As described above, according to the second exemplary embodiment of the present invention, a virtual core network for a carrier and a virtual network for providing a cloud service to users are independently constructed within a datacenter, and traffic is distributed to either the virtual core network or the virtual network, whereby it is possible to enhance the versatility of the datacenter and thus to achieve the efficient use of the virtual network.
The present invention can be applied to a communication system including a datacenter.
Application software in accordance with the present disclosure, such as computer programs executed by the device and may be stored on one or more computer readable mediums. It is also contemplated that the steps identified herein may be implemented using one or more general purpose or specific purpose computers and/or computer systems, networked and/or otherwise. Where applicable, the ordering of various steps described herein may be changed, combined into composite steps, and/or separated into sub-steps to provide features described herein.
It should also be understood that embodiments of the present disclosure should not be limited to these embodiments but that numerous modifications and variations may be made by one of ordinary skill in the art in accordance with the principles of the present disclosure and be included within the spirit and scope of the present disclosure as hereinafter claimed.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2015-042268 | Mar 2015 | JP | national |
This application is a Continuation of U.S. application Ser. No. 15/555,327 filed Sep. 1, 2017, which is a National Stage of International Application No. PCT/JP2016/001165 filed Mar. 3, 2016, claiming priority based on Japanese Patent Application No. 2015-042268 filed Mar. 4, 2015, the disclosures of all of which are incorporated herein by reference in their entireties.
| Number | Date | Country | |
|---|---|---|---|
| Parent | 15555327 | Sep 2017 | US |
| Child | 16248628 | US |
