US 8,804,746 B2Granted

Network based on identity identifier and location separation architecture backbone network, and network element thereof

AssigneeZte Corporation

InventorsQiang Wu, Bing Huang, Tao Fu

Life of this patent

Estimating the term…

Loading patent…

Abstract

The present invention provides a network based on identity identifier and location separation architecture and each component in the network. The network based on identity identifier and location identifier separation architecture includes access networks and a backbone network, and the access networks and the backbone network have no overlap in topology relation, wherein, the access network is located at an edge of the backbone network, and is set to achieve endpoint access in the access network; the backbone network is set to achieve routing and forwarding of data messages between the endpoints which access via the access networks; in the network, an access identifier (AID) is taken as an identity identifier of an endpoint user, and a routing identifier (RID) is used as a location identifier of the endpoint. The present invention achieves the identity identifier and location separation based on the network.

Claims20

Dependent claims

A network based on identity identifier and location identifier separation architecture, the network comprising an access network and a backbone network, and the access network and the backbone network having no overlap in topology relationship, wherein:

the access network is located at an edge of the backbone network, and is set to achieve accessing to the access network of an endpoint;
the backbone network is set to achieve routing and forwarding of a data message between the endpoint and other endpoint which access to the backbone network via the access network;
in the network, an access identifier (AID) is taken as an identity identifier of an endpoint user, and a routing identifier (RID) is used as a location identifier of the endpoint;
the backbone network is divided into two planes during networking:
a generalized forwarding plane and a mapping forwarding plane;
the generalized forwarding plane is set to route and forward the data message which take the RIDs as destination addresses according to the RIDs in the data message;
the mapping forwarding plane is set to store AID-RID mapping information of the endpoint, to process registration and inquiry of a location of the endpoint, and to route and forward the data message which take the AID as the destination address;
the network further comprises an access service node (ASN), the ASN is included in the backbone network, the ASN is located in the boundary nodes of the generalized forwarding plane, the mapping forwarding plane and the access network, and has interfaces to the access network, the generalized forwarding plane, and the mapping forwarding plane;
or the ASN is independent of the backbone network, and is located in the boundary node of the backbone network and the access network, and the ASN has interfaces to the access network and the backbone network;
the ASN is set to provide access services for the endpoint, maintain connections between the endpoint and the network, allocate the RID to the endpoint, register the RID of the endpoint to and inquire the RID of the endpoint in the mapping forwarding plane, maintain the AID-RID mapping information, and achieve the routing and forwarding of the data message between the endpoint and the other endpoint;
when there are more than one ASNs, there are a signaling interface and a second data forwarding interface between the ASNs, and the signaling interface between the ASNs is set to switch transmission of the management signaling during the switching, and deliver a RID update message when the location between the communication peer endpoint changes;
the second data forwarding interface is set to forward data between the ASNs during the switching, wherein, the data message at the second data forwarding interface includes the tunneling encapsulation.

9 more elements

An access service node (ASN) in a network based on identity identifier and location identifier separation architecture, wherein, the ASN comprises at least one processor executing:

providing access services for an endpoint, maintaining connections between the endpoint and the network, allocating routing identities (RIDs) to the endpoint, registering and inquiring the RIDs of the endpoint in a mapping forwarding plane, maintaining an access identifier to routing identifier (AID-RID) mapping information of the endpoint, and implementing the routing and forwarding of a data message;
cooperating with an authentication center to authenticate the endpoint and charging the services, as well as cooperating with other ASN to implement the switching of the endpoint across the ASN;
the at least one processor includes a first forwarding unit and a second forwarding unit, wherein,
the first forwarding unit is set to, after receiving the data message sent by the endpoint accessing to the ASN, inquire the AID-RID mapping information in a local cache according to the AID, which works as the destination address in the data message, of the communication peer endpoint, if the RID of the communication peer endpoint is searched out, take the RID of the communication peer endpoint as the destination address, and take the RID of the endpoint as the source address, and encapsulate in the data message, then send the encapsulated data message to a generalized forwarding plane;
if the RID of the communication peer endpoint is not searched out, tunneling encapsulate and forward the data message to the mapping forwarding plane, and notify the mapping management module to inquire the RID of the communication peer endpoint;
the second forwarding unit is set to, after receiving the data message which is to be sent to the endpoint accessing to the ASN, remove the encapsulated RID in the data message and recover to the format of the data message sent by the communication peer endpoint to the ASN, then send the data message to the endpoint via the connection between the ASN and the endpoint.

3 more elements

An interconnect service node (ISN) in a network based on identify identifier and location identifier separation architecture, wherein, the ISN comprises at least one processor executing:

inquiring and maintaining access identifier to routing identifier (AID-RID) mapping information of an endpoint of the network, encapsulating, routing and forwarding a data message transporting between the network and a Legacy IP network, achieving interconnection between the network and the Legacy IP network;
the at least one processor includes a first forwarding unit and a second forwarding unit, wherein,
the first forwarding unit is set to, according to the AID of the endpoint in the data message sent by the Legacy IP network, inquire the AID-RID mapping information in the local cache:
if the RID corresponding to the AID of the endpoint is searched out, take the RID of the endpoint as the destination address to encapsulate in the data message, then forward the encapsulated data message to the generalized forwarding plane;
if the RID corresponding to the AID of the endpoint is not searched out, tunneling encapsulate and forward the data message to the mapping forwarding plane, and notify the mapping management module to inquire the RID of the endpoint;
the second forwarding unit is set to, after receiving a data message sent by the network, remove the encapsulated RID in the data message, and then send to the endpoint in the Legacy IP network or a format conversion module.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/496,727Filed 13 Sep 2010
Priority: CN 2009 1 017197517 Sep 2009
Published: US 2012/0176936 A112 Jul 2012
Granted: 12 Aug 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04W 8/26
Network data management: network addressing or numbering for mobility support
H04L 61/103
Of different types: across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
H04L 61/5084
Address allocation: providing for device mobility
H04W
Wireless communication networks