# US 2019/0174559 A1 · Connection identifier system and method

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- Number: US 2019/0174559 A1
- Document ID: US20190174559A1
- Status: Published application
- Kind: A1
- Application number: 16/265,758
- Filed: 2019-02-01
- Published: 2019-06-06
- Earliest claimed: 2007-08-15
- Assignees: NEC Corporation
- Applicants: NEC Corporation
- Inventors: Francesca SERRAVALLE
- Web page: https://patentgrep.com/patent/US20190174559A1

## CPC

- H04W 76/10: Connection setup
- H04W 8/26: Network addressing or numbering for mobility support
- H04W 72/04: Wireless resource allocation
- H04W 36/08: Reselecting an access point
- H04W 92/045: {between access point and backbone network device}
- H04W 92/20: between access points
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A method and system are proposed for establishing a requested connection between a source node and a destination node in a telecommunications network. The system and method are described in relation to a 3GPP network, but are applicable to other types of networks. The method includes generating a source application identifier for the connection within the source node, retrieving a source node identifier for the source node and transmitting the source application identifier and the source node identifier to the destination to provide a source connection identifier for the requested connection between the source node and the destination node.

## Claims

### Claim 1

A source base station comprising:
a controller and a transceiver;
wherein the controller is configured to control the transceiver to:
communicate with a target base station over an X2 interface;
transmit, to the target base station over the X2 interface, an X2 application protocol (X2AP) handover request message which includes a Mobility Management Entity User Equipment S1AP (MME UE S1AP) identity and a global MME identity, wherein the MME UE S1AP identity uniquely identifies a UE over an S1 interface within the MME; and
receive, from the target base station over the X2 interface, an X2AP handover request acknowledgement message.

### Claim 2

A method performed by a source base station, the method comprising:
communicating with a target base station over an X2 interface;
transmitting, to the target base station over the X2 interface, an X2 application protocol (X2AP) handover request message which includes a Mobility Management Entity User Equipment S1AP (MME UE S1AP) identity and a global MME identity, wherein the MME UE S1AP identity uniquely identifies a UE over an S1 interface within the MME; and
receiving, from the target base station over the X2 interface, an X2AP handover request acknowledgement message.

### Claim 3

A target base station comprising:
a controller and a transceiver;
wherein the controller is configured to control the transceiver to:
communicate with a source base station over an X2 interface;
receive, from the source base station over the X2 interface, an X2 application protocol (X2AP) handover request message which includes a Mobility Management Entity User Equipment S1AP (MME UE S1AP) identity and a global MME identity, wherein the MME UE S1AP identity uniquely identifies a UE over an S1 interface within the MME; and
transmit, to the source base station over the X2 interface, an X2AP handover request acknowledgement message.

### Claim 4

A method performed by a target base station, the method comprising:
communicating with a source base station over an X2 interface;
receiving, from the source base station over the X2 interface, an X2 application protocol (X2AP) handover request message which includes a Mobility Management Entity User Equipment S1AP (MME UE S1AP) identity and a global MME identity, wherein the MME UE S1AP identity uniquely identifies a UE over an S1 interface within the MME; and
transmitting, to the source base station over the X2 interface, an X2AP handover request acknowledgement message.