Openflow based distributed antenna system
AssigneeSOLiD, INC.
InventorsDong Hee KWON, Hoo Pyo HONG, Young Man CHO
Life of this patent
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Abstract
Disclosed is a distributed antenna system (DAS). The DAS includes a DAS controller, which is an OpenFlow controller, and one or more DAS units in order to dynamically control a traffic transmission policy of the DAS units using an OpenFlow protocol, wherein the DAS controller generates and changes a traffic transmission policy by reflecting a traffic transmission policy change request by operator manipulation or a software-defined network supporting application and a need for changing of the traffic transmission policy according to a status of the DAS unit and a status of a port, and the DAS unit transmits received traffic to a destination according to the policy.
Claims17
An OpenFlow based distributed antenna system (DAS) comprising:
- a DAS unit configured to transmit traffic received through an input port of the DAS unit to an output port thereof on the basis of set traffic transmission policy information;
- and
- a DAS controller configured to generate or change a traffic transmission policy and transmit a corresponding policy to the DAS unit using an OpenFlow protocol.
An OpenFlow based distributed antenna system (DAS) policy setting method comprising:
- receiving, by a DAS controller, a new policy setting request from an operator terminal or an integrated software-defined network supporting application;
- processing, by the DAS controller, the request to new policy information and transmitting the new policy information to DAS unit using an OpenFlow protocol;
- receiving, by a DAS unit, the new policy information;
- mapping, by the DAS unit, the received policy information to setting information suitable for a structure of a data plane of the DAS unit;
- and
- updating, by the DAS unit, a forwarding table with the mapped setting information.
An OpenFlow based distributed antenna system (DAS) policy routing method comprising:
- extracting, by a DAS unit, a match field from header information of a received frame;
- and
- comparing, by the DAS unit, the extracted match field with a matching rule of a forwarding table to route according to a matching traffic transmission policy and output a frame to an output port of the DAS unit.
Dependencies are inferred from the claim text.