Automatic distribution of server and gateway information for pool configuration

• US 8,072,900 B2
• Filed: 12/28/2007
• Issued: 12/06/2011
• Est. Priority Date: 12/29/2006
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Antal, Csaba, Takács, Attila, Westberg, Lars
• Primary Examiner(s): Ho, Chuong T
• Application Number:
  US12/521,129
• Publication Number:
  US 20100061301A1
• Time in Patent Office: 1,439 Days
• Field of Search: 370252-255, 370/329, 370/401, 370/395.4, 455/428, 455/422.1
• US Class Current: 370/252
• CPC Class Codes: H04L 45/00 Routing or path finding of packets in data switching networks routing or path finding in wireless networks H04W40/00
• CPC Class Codes: H04L 45/02 Topology update or discovery
• CPC Class Codes: H04L 45/03 by updating link state protocols
• CPC Class Codes: H04L 45/60 Router architectures
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 40/24 Connectivity information management, e.g. connectivity discovery or connectivity update
• CPC Class Codes: H04W 8/12 between location registers or mobility servers

Abstract

A mobile communications network has separation between a user plane (UP) and a control plane (CP). The network includes plural entities, including plural user plane entities (UPEs), which form the user plane and plural mobility management entities (MMEs), which form the control plane. At least one of the entities is configured to transmit advertisement information. The advertisement information includes status information and configuration information of the at least one entity. The network also includes a node or unit configured to use both the advertisement information and transport information transported on the user plane to select a user plane entity for attachment to a wireless station serviced by the network.

Claims

1. A system in a mobile communications network having separation between a user plane and a control plane, the system comprising:

plural entities, the plural entities comprising;

plural user plane entities comprising the user plane; and

plural mobility management entities comprising the control plane;

wherein at least one of said plural entities is configured to transmit advertisement information in at least one of a Routing Information Protocol (RIP) message, an Open Shortest Path (OSPF) protocol message, and an Intermediate System to Intermediate System (ISIS) message, the advertisement information comprising status information and configuration information of the at least one entity, wherein the status information comprises load information and availability information and the configuration information comprises supported services information and pool membership information; and

a mobility management entity-node of the system for utilizing both the transmitted advertisement information and transport information transported on the user plane to select a user plane entity for attachment to a wireless station serviced by the network, wherein the transport information comprises information distributed by traffic engineering extensions of Interior Gateway Protocol (IGP) routing protocols.

2. The system of claim 1, wherein the plural mobility management entities are organized into pools.

3. A system in a mobile communications network having separation between a user plane and a control plane, the system comprising:

plural entities, the plural entities comprising;

plural user plane entities comprising the user plane; and

plural mobility management entities comprising the control plane;

wherein at least one of said plural entities is configured to transmit advertisement information, the advertisement information comprising status information and configuration information of the at least one entity, wherein the status information comprises load information and availability information, and the configuration information comprises supported services information and pool membership information; and

a mobility management entity-node of the system for utilizing both the transmitted advertisement information and transport information transported on the user plane to select a user plane entity for attachment to a wireless station serviced by the network, wherein the transport information comprises information distributed by traffic engineering extensions of Interior Gateway Protocol (IGP) routing protocols.

4. A mobility management entity-node of a mobile communications network having separation between a user plane and a control plane, wherein the node is configured to:

receive advertisement information from plural pooled user plane entities on the user plane and from plural mobility management entities on the control plane, wherein the advertisement information comprises status information and configuration information of the user plane entities and the mobility management entities, wherein the status information comprises load information and availability information, and the configuration information comprises supported services information and pool membership information;

receive transport information transported on the user plane, wherein the transport information comprises information distributed by traffic engineering extensions of Interior Gateway Protocol (IGP) routing protocols; and

utilize both the advertisement information and the transport information to select a user plane entity for attachment to a wireless station serviced by the network.

5. The node of claim 4, wherein the advertisement information is included in at least one of:

a Routing Information Protocol (RIP) message;

an Open Shortest Path (OSPF) protocol message; and

an Intermediate System to Intermediate System (ISIS) message.

6. The node of claim 4, wherein the node is configured to use one or more of the following factors to select the user plane entity:

location of a radio access network base station node which serves the wireless terminal;

topology information concerning a transport network interconnecting the base station node which serves the wireless terminal and the user plane entities;

user plane entity information from an Interior Gateway Protocol (IGP) routing protocol;

subscriber information; and

administratively configured rules.

7. A method in a mobility management entity of operating a mobile communications network having separation between a user plane and a control plane, the network including plural entities, the plural entities in turn including plural pooled user plane entities on the user plane and plural mobility management entities on the control plane, the method comprising the steps of:

receiving advertisement information from at least one of the plural entities, the advertisement information comprising status information and configuration information of at least one of the plural entities, wherein the status information comprises load information and availability information, and the configuration information comprises supported services information and pool membership information;

receiving transport information transported on the user plane, wherein the transport information comprises information distributed by traffic engineering extensions of Interior Gateway Protocol (IGP) routing protocols; and

using both said received advertisement information and transport information to select a user plane entity for attachment to a wireless station serviced by the network.

8. The method of claim 7, further comprising storing the received advertisement information in the mobility management entity.

9. The method of claim 7, further comprising including in the status information at least one of information on load on a node in the network, information on load on a link in the network, and availability information.

10. The method of claim 7, further comprising organizing the plural mobility management entities into pools.

11. The method of claim 7, further comprising including the advertisement information in at least one of:

a Routing Information Protocol (RIP) message;

an Open Shortest Path (OSPF) protocol message; and

an Intermediate System to Intermediate System (ISIS) message.

12. The method of claim 7, further comprising including the advertisement information in a routing message.

13. The method of claim 7, further comprising using one or more of the following factors to select the user plane entity:

location of a radio access network base station node which serves the wireless terminal;

topology information concerning a transport network interconnecting the base station node which serves the wireless terminal and the user plane entities;

user plane entity information from an Interior Gateway Protocol (IGP) routing protocol;

subscriber information; and

administratively configured rules.