Communication system, serving gateway, communication method therefor, and base station
First Claim
1. A serving gateway in a communication system including a plurality of PDN (Packet Data Network) gateways, comprising:
- a control interface to a control apparatus which controls the serving gateway;
a control-plane serving gateway; and
a plurality of user-plane serving gateways each associated with the plurality of PDN gateways,wherein each of the plurality of user-plane serving gateways comprises;
a first logical path manager that manages a first logical path with a PDN gateway associated with the serving gateway;
a second logical path manager that manages a second logical path with a base station; and
a switch that exchanges packets and information related to a logical path with at least one of the first and second logical path managers in accordance with an operation rule, which is notified from the control apparatus in response to a request from a control plane for the first and second logical paths,wherein the information related to the logical path includes, as packet metadata, at least one of identification information for identifying the logical path and a sequence number in at least one of the first and second logical paths.
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Accused Products
Abstract
A communication system, a serving gateway, a communication method, and a base station are provided that make it possible to flexibly increase/decrease a U-plane processing function of a communication apparatus. A communication system in which a logical path is configured in a network to perform communication, comprises: second gateways (740-1, 740-2), which are deployed for a plurality of first gateways (720-1, 720-2), respectively; a transport network (760), which the logical paths configured between a base station (770) and the second gateways pass through; and a control apparatus (710) that controls packet forwarding in the transport network, wherein the control apparatus controls the transport network so that a logical path to which a packet belongs is identified and the packet will be forwarded to the second gateway corresponding to the identified logical path.
15 Citations
8 Claims
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1. A serving gateway in a communication system including a plurality of PDN (Packet Data Network) gateways, comprising:
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a control interface to a control apparatus which controls the serving gateway; a control-plane serving gateway; and a plurality of user-plane serving gateways each associated with the plurality of PDN gateways, wherein each of the plurality of user-plane serving gateways comprises; a first logical path manager that manages a first logical path with a PDN gateway associated with the serving gateway; a second logical path manager that manages a second logical path with a base station; and a switch that exchanges packets and information related to a logical path with at least one of the first and second logical path managers in accordance with an operation rule, which is notified from the control apparatus in response to a request from a control plane for the first and second logical paths, wherein the information related to the logical path includes, as packet metadata, at least one of identification information for identifying the logical path and a sequence number in at least one of the first and second logical paths. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A communication method for a serving gateway in a communication system including a plurality of PDN (Packet Data Network) gateways, wherein the serving gateway comprises:
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a control interface to a control apparatus which controls the serving gateway; a control-plane serving gateway; and a plurality of user-plan serving gateways each associated with the plurality of PDN gateways, the method comprising;
at each of the plurality of user-plane serving gateways,by a first logical path manager, managing a first logical path with a PDN gateway associated with the serving gateway; by a second logical path manager, managing a second logical path with a base station; and by a switch, exchanging packets and information related to a logical path with at least one of the first and second logical path managers in accordance with an operation rule, which is notified from a control apparatus in response to a request from a control plane for the first and second logical paths, wherein the information related to the logical path includes, as packet metadata, at least one of identification information for identifying the logical path and a sequence number in at least one of the first and second logical paths.
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Specification