COMMUNICATION METHOD OF CONTENT ROUTER TO CONTROL TRAFFIC TRANSMISSION RATE IN CONTENT-CENTRIC NETWORK(CCN), AND CONTENT ROUTER
First Claim
1. A communication method to control a traffic transmission rate in a content-centric network (CCN) in which a content router transmits an interest packet, the communication method comprising:
- generating a warning signal indicating traffic congestion occurring in the content router;
adding the warning signal to an interest packet received from a previous node; and
transmitting to a next node the interest packet to which the warning signal is added.
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Accused Products
Abstract
A communication apparatus and method of a content router control a traffic transmission rate in a content-centric network (CCN), and the content router. In the communication method and the content router, a congestion of a network may be predicted, a warning signal indicating the congestion may be added to an interest packet, and the interest packet with the warning signal may be transmitted. Additionally, a traffic transmission rate may be controlled by adjusting a data packet transmission time based on a value of a marked field of a PIT. The PIT is set by receiving an interest packet to which a warning signal is added. Thus, the communication apparatus and method thereof provide reachability, while maintaining stability of network routing.
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Citations
19 Claims
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1. A communication method to control a traffic transmission rate in a content-centric network (CCN) in which a content router transmits an interest packet, the communication method comprising:
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generating a warning signal indicating traffic congestion occurring in the content router; adding the warning signal to an interest packet received from a previous node; and transmitting to a next node the interest packet to which the warning signal is added. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A content router to control a traffic transmission rate, the content router comprising:
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a processor configured to add a warning signal to an interest packet, based on a likelihood of traffic congestion occurring in the content router, wherein the interest packet is received from a previous node; a memory configured to store a pending interest table (PIT) for an interest packet passing through the content router; and a communication interface configured to enable a communication to be performed between the previous node, the content router, and a next node, wherein the PIT comprises a marked field indicating whether the warning signal is added to the interest packet. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method of a counter router to control a traffic transmission rate, the method comprising:
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receiving a data packet responding to an interest packet; verifying a value of a marked field to control a traffic transmission rate by adjusting a data packet transmission time in which the data packet is transmitted, wherein the marked field corresponds to an entry associated with the data packet in a pending interest table (PIT) of the content router; determining whether the marked field has a first logical value or a second logical value; when the marked field is determined to have the second logical value, calculating an amount of time based on a backoff time (BT) window indicating a range of a window in which the data packet transmission time is delayed, and based on an average processing time for the interest packet and the data packet, and controlling the traffic transmission rate by delaying the data packet transmission time by the amount of time; and when the marked field is determined to have the first logical value, transmitting the data packet without a delay in the data packet transmission time.
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Specification