Communication system and communication method
AssigneeNippon Telegraph and Telephone Corporation
InventorsAki Fukuoka, Koji Sugisono
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Abstract
In a communication system, an SLG includes a slice selection unit that selects, in receiving a network slice reservation request including a network condition from a vCPE, based on topology information, a latency state, and processing capability information regarding each of the other SLGs, a destination SLG of a network slice that satisfies the network condition to reserve the network slice, and if there is no destination SLG that satisfies the network condition, newly activates a destination SLG to establish a network slice that satisfies the network condition, and an allocation unit that allocates traffic transmitted from the vCPE to the network slice reserved or established by the selection unit.
Claims6
A communication system, comprising:
- a network slice being a virtual logical network provided on a physical resource;
- a slice gateway (SLG) provided at an end of the network slice;
- and a virtualized customer premieres equipment (vCPE) configured to accommodate a terminal,
- wherein the SLG includes a plurality of the SLGs, and
- the SLG includes:
- a selection unit, including one or more processors, configured to select, in receiving a network slice reservation request including a network condition from the vCPE, based on topology information, a latency state, and processing capability information regarding each of the other SLGs, a destination SLG of the network slice satisfying the network condition to reserve the network slice, and if there is no destination SLG satisfying the network condition, configured to newly activate a destination SLG to establish the network slice satisfying the network condition, wherein the selection unit is configured to, in receiving the network slice reservation request including service level agreement (SLA) information of the terminal and a required network functions virtualization (NFV) from the vCPE, select, based on the topology information, the latency state, and the processing capability information regarding each of the other SLGs, the destination SLG including a corresponding NFV and transmit a request for reserving resources up to the selected destination SLG and a request for reserving the corresponding NFV to the destination SLG to establish the network slice;
- and
- an allocation unit, including one or more processors, configured to allocate traffic transmitted from the vCPE to the network slice reserved or established by the selection unit.
A communication method executed by a communication system including a network slice being a virtual logical network provided on a physical resource, an SLG provided at an end of the network slice, the SLG including a plurality of the SLGs, and a vCPE configured to accommodate a terminal, the communication method comprising:
- receiving, by the SLG, a network slice reservation request including a network condition from the vCPE;
- selecting, by the SLG, a destination SLG of the network slice satisfying the network condition, based on topology information, a latency state, and processing capability information regarding each of the other SLGs to reserve the network slice, wherein selecting the destination SLG comprises:
- receiving the network slice reservation request including service level agreement (SLA) information of the terminal and a required network functions virtualization (NFV) from the vCPE,
- selecting, by the SLG, based on the topology information, the latency state, and the processing capability information regarding each of the other SLGs, the destination SLG including a corresponding NFV, and
- transmitting, by the SLG, a request for reserving resources up to the selected destination SLG and a request for reserving the corresponding NFV to the destination SLG to establish a network slice;
- newly activating, by the SLG, a destination SLG to establish the network slice satisfying the network condition, if there is neither a network slice nor a destination SLG satisfying the network condition;
- and
- allocating, by the SLG, traffic transmitted from the vCPE to the reserved or established network slice.
Dependencies are inferred from the claim text.