Method and system for managing idle mode of a mobile node with multiple interfaces
First Claim
1. A method for controlling a first interface and a second interface installed on a mobile node, wherein the mobile node communicates with a first access network (AN) through the first interface and communicates with a second AN through the second interface, comprising:
- acquiring a first IP address through the first interface and the first AN for accessing a service network (SN);
acquiring a second IP address through the second interface and the second AN for accessing the SN;
selecting the first interface as an awake interface;
directing a second bridging node to create and cache binding information indicating a binding of the second IP address to the first IP address;
turning off the second interface after the binding information is successfully created and cached on the second bridging node;
receiving a packet via the first interface;
de-tunneling the received packet and discovering that the received packet is originally transmitted to the second interface;
turning on the second interface; and
directing the second bridging node to erase the cached binding information via the second interface.
1 Assignment
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Accused Products
Abstract
A method for controlling a first interface and a second interface installed on a mobile node is provided, wherein the mobile node communicates with a first access network (AN) through the first interface and communicates with a second AN through the second interface. The method comprises following steps. A first IP address is acquired through the first interface and the first AN for accessing a service network (SN). A second IP address is acquired through the second interface and the second AN for accessing the SN. The first interface is then selected as an awake interface. The second bridging node is directed to create and cache binding information indicating a binding of the second IP address to the first IP address. The second interface is turned off after the binding information is successfully created and cached on the second bridging node.
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Citations
17 Claims
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1. A method for controlling a first interface and a second interface installed on a mobile node, wherein the mobile node communicates with a first access network (AN) through the first interface and communicates with a second AN through the second interface, comprising:
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acquiring a first IP address through the first interface and the first AN for accessing a service network (SN); acquiring a second IP address through the second interface and the second AN for accessing the SN; selecting the first interface as an awake interface; directing a second bridging node to create and cache binding information indicating a binding of the second IP address to the first IP address; turning off the second interface after the binding information is successfully created and cached on the second bridging node; receiving a packet via the first interface; de-tunneling the received packet and discovering that the received packet is originally transmitted to the second interface; turning on the second interface; and directing the second bridging node to erase the cached binding information via the second interface. - View Dependent Claims (2, 3, 4, 5)
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6. A method for controlling a first interface and a second interface installed on a mobile node, wherein the mobile node communicates with a first access network (AN) through the first interface and communicates with a second AN through the second interface, comprising:
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acquiring a first IP address through the first interface and the first AN for accessing a service network (SN); acquiring a second IP address through the second interface and the second AN for accessing the SN; selecting the first interface as an awake interface; directing the second bridging node to create and cache binding information indicating a binding of the second IP address to the first IP address; turning off the second interface after the binding information is successfully created and cached on the second bridging node; receiving a packet via the first interface; de-tunneling the received packet and discovering that the received packet is sent by a corresponding node and originally transmitted to the second interface; and directing the corresponding node to create the cache binding information indicating a binding of the second IP address to the first IP address on the corresponding node. - View Dependent Claims (7)
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8. A system for managing a first interface capable of communicating with a first access network (AN), and a second interface capable of communicating with a second AN, comprising:
a processing unit acquiring a first IP address assigning by a first bridging node through the first interface and the first AN for accessing a service network (SN), acquiring a second IP address assigned by a second bridging node through the second interface and the second AN, acquiring a third IP address assigned by the first bridging node through the second interface for accessing the SN, selecting the first interface as an awake interface, directing the first bridging node to create and cache binding information indicating a binding between the third IP address and the first IP address, turning off the second interface after the binding information is successfully created and cached on the first bridging node, receiving a packet via the first interface, de-tunneling the received packet and discovering that the received packet is originally transmitted to the third IP address, turning on the second interface, and directing the first bridging node to update the cached binding information with that indicating a binding between the third IP address and the second IP address. - View Dependent Claims (9, 10)
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11. A system for managing a first interface capable of communicating with a first access network (AN), and a second interface capable of communicating with a second AN, comprising:
a processing unit acquiring a first IP address assigned by a first bridging node through the first interface and the first AN for accessing a service network (SN), acquiring a second IP address assigned by a second bridging node through the second interface and the second AN for accessing the SN, selecting the first interface as an awake interface, directing the second bridging node to create and cache binding information indicating a binding between the second IP address and the first IP address, turning off the second interface after the binding information is successfully created and cached on the second bridging node, receiving a packet via the first interface, de-tunneling the received packet and discovering that the received packet is originally transmitted to the second interface, turning on the second interface, and directing the second bridging node to erase the cached binding information or update the cached binding information with that indicating a binding between the second IP address and a third IP address assigned by a foreign agent (FA) using the second interface. - View Dependent Claims (12, 13, 14, 15)
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16. A system for managing a first interface capable of communicating with a first access network (AN), and a second interface capable of communicating with a second AN, comprising:
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a processing unit acquiring a first IP address assigned by a first bridging node through the first interface and the first AN for accessing a service network (SN), acquiring a second IP address assigned by a second bridging node through the second interface and the second AN for accessing the SN, selecting the first interface as an awake interface, directing the second bridging node to create and cache binding information indicating a binding between the second IP address and the first IP address, turning off the second interface after the binding information is successfully created and cached on the second bridging node, receiving a packet via the first interface, de-tunneling the received packet and discovering that the received packet is originally transmitted to the second interface, directing the second bridging node to erase the cached binding information or update the cached binding information with that indicating a binding between the second IP address and a third IP address assigned by a foreign agent (FA), and turning on the second interface after the cached binding information is successfully erased or updated, wherein the SN is the Internet, the first bridging node operates as a first home agent (HA1) for the first interface, the second bridging node operates as a second home agent for the second interface, the first IP address is a first care of address (CoA1) of a first home of address (HoA1) maintained by the HA1, the second IP address is a second a second home of address (HoA2) maintained by the HA2, and the third IP address is acquired via the second interface through a currently attached AN and is a second care of address (CoA2) of HoA2.
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17. A method for controlling a first interface and a second interface installed on a mobile node, wherein the mobile node communicates with a first access network (AN) through the first interface and communicates with a second AN through the second interface, comprising:
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turning off the second interface; determining whether the mobile node is potentially moved out of an available coverage of the second AN according to signals received via the first interface; and if so, turning on the second interface, discovering a third AN via the second interface, attaching to the third AN when discovered, and turning off the second interface, wherein that the mobile node is potentially moved out of an available coverage of the second AN is determined when a condition is satisfied;
DMN-AP+β
×
DMOVE>
RAP,β
is a weighting value, RAP denotes an available coverage area of the second AN DMN-AP denotes a distance between the second AN and the mobile node, and DMOVE denotes a moving distance of the mobile node according to variations of signal strengths received by the first interface.
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Specification