METHOD AND APPARATUS FOR CONTROLLING MULTICAST IP PACKETS IN ACCESS NETWORK

• US 20100290463A1
• Filed: 09/19/2008
• Published: 11/18/2010
• Est. Priority Date: 09/26/2007
• Status: Active Grant

• Current Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Original Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Inventors: Wen, Haibo, Zheng, Jun, Bin, Fanxiang, Yao, Chunyan
• Granted Patent: US 8,923,181 B2
• Time in Patent Office: Days
• US Class Current: 370/390
• CPC Class Codes: H04L 12/1877 Measures taken prior to transmission
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04L 12/2881 IP/Ethernet DSLAM

Abstract

The present invention proposes a method for controlling the uplink transmission of the multicast IP packet sourced from the UE in field of IP packet transmission in access network. According to the technical solution of the present invention, the access devices receives IP packet from the UE, checks the IP packet and determines whether the IP packet is multicast IP packet that is allowed to be accessed. If the access device determines that the IP packet is multicast IP packet that is allowed to be accessed, then it sends the multicast IP packet in multicast form. Via the present invention, the access device can allow the uplink valid multicast IP packet to pass, preferably, determines and intercepts the malicious attacks via multicast IP packet, so as to ensure the DSL access device'"'"'s support for mobile IPv4, so as to keep the uninterrupted connection of the service to the user when the user moves between different subnets.

Claims

1. A method for, in an accessing device of an access network, controlling an IP packet from a user equipment, comprising:

a. receiving an IP packet from a user equipment;

b. checking said IP packet and determining whether said IP packet is a multicast IP packet that is allowed to pass;

c. in case that said IP packet is a multicast IP packet that is allowed to pass, sending said allowed multicast IP packet in multicast form.

2. A method according to claim 1, wherein said step b further comprises:

if said IP packet is a multicast IP packet which satisfies at least one of the following conditions, taking said IP packet as an allowed multicast IP packet;

the multicast address of said multicast IP packet belongs to the predetermined valid multicast address;

said IP packet is a predetermined type of multicast IP packet.

3. A method according to claim 2, further comprising the following steps after step b and before step c:

when the IP packet received from the UE is said predetermined type of multicast IP packet, determining whether the times for the UE to send said predetermined type of multicast IP packet have exceeded a first predetermined value;

when the times for the UE to send the predetermined type of multicast IP packet have not exceeded the first predetermined value, taking the IP packet as the allowed multicast IP packet.

4. A method according to claim 2, wherein said access network is fixed access network, the method further comprises the following steps after step b and before step c:

when the IP packet received from a user side port is said predetermined type of multicast IP packet, determining whether the times of the predetermined type of multicast IP packet received from the user side port in a second predetermined period have exceeded a second predetermined value;

when the times of the predetermined type of multicast IP packet received from the user side port in the second predetermined period have not exceeded the second predetermined value, taking the IP packet as the allowed multicast IP packet.

5. A method according to claims 1, wherein said access network is based on mobile IPv4 protocol, and said predetermined type of multicast IP packet comprises multicast IP controlling packet.

6. A method according to claim 5, wherein said multicast IP controlling packet comprises mobile IP controlling message and/or ICMP router discovery message.

7. A method according to claim 6, wherein said mobile IP controlling message comprises registration request message, said ICMP router discovery message comprises agent solicitation message.

8. A controller for, in an accessing device of an access network, controlling an IP packet from a user equipment, comprising:

a receiver, for receiving an IP packet from a user equipment;

a first determination means, for checking said IP packet and determining whether said IP packet is a multicast IP packet that is allowed to pass;

a transmitter, for sending said allowed multicast IP packet in multicast form.

9. A controller according to claim 8, wherein said first determination means is further for:

if said IP packet is a multicast IP packet which satisfies at least one of the following conditions, taking said IP packet as an allowed multicast IP packet;

the multicast address of said multicast IP packet belongs to the predetermined valid multicast address;

said IP packet is a predetermined type of multicast IP packet.

10. A controller according to claim 9, further comprising:

a second determination means for, when the IP packet received from the user equipment is said predetermined type of multicast IP packet, determining whether the times for the UE to send said predetermined type of multicast IP packet have exceeded a first predetermined value;

a third determining means, for when the times for the UE to send the predetermined type of multicast IP packet have not exceeded the first predetermined value, taking the IP packet as the allowed multicast IP packet.

11. A controller according to claim 9, wherein said access network is fixed access network, the controller further comprises:

a fourth determination means for, when the IP packet received from a user side port is said predetermined type of multicast IP packet, determining whether the times of the predetermined type of multicast IP packet received from the user side port in a second predetermined period have exceeded a second predetermined value;

a fifth determination means for, when the times of the predetermined type of multicast IP packet received from the user side port in the second predetermined period have not exceeded the second predetermined value, taking the IP packet as the allowed multicast IP packet.

12. A controller according to claims 8, wherein said access network is based on mobile IPv4 protocol, and said predetermined type of multicast IP packet comprises multicast IP controlling packet.

13. A controller according to claim 12, wherein said multicast IP controlling packet comprises mobile IP controlling message and/or ICMP router discovery message.

14. A controller according to claim 13, wherein said mobile IP controlling message comprises registration request message, said ICMP router discovery message comprises agent solicitation message.

15. An access device in access network, comprising a controller for controlling an IP packet from a user equipment according to claim 8.