Abstract:
Modifications to authentication and authorization messages are used to allow an authentication server (104) to query (108, 110) both an access network (102) and a terminal device (100) connecting over the access network to determine whether both nodes support the terminal device forming a plurality of packet data network connections that can support tunnels. The terminal device and the access network are informed (112, 114) by the authentication server about the support of the other entity. This allows a non-3GPP access network, in particular a trusted WLAN access network (TWAN), to offer terminal devices the ability to connect to a 3GPP core network with multiple connections.
Abstract:
A UE makes use of an indication of the PLMN ID that it selected in communications with a WiFi access network to ensure that the proper connection to a Evolved Packet core is provided.
Abstract:
A QoS based selection of access network allows a UE to transmit different data traffic flows using different access technologies. The selection is done in accordance with information provided in the ANDSF. This allows a network operator to determine how different data traffic is routed, which can allow for better network utilization planning.
Abstract:
A method and a mobility management entity (MME) are provided for supporting optimized handover of a user equipment (UE) session between radio access networks (RAN) that may offer different radio access technologies. The MME provides mobility management for the UE session. To support eventual handover tunneling between a first radio network, in which the session is set up, and a second radio network, in which the session may continue, an uplink generic routing encapsulation (GRE) key is reserved upon session set up. The MME requests a packet data gateway (PGW) to allocate and reserve the uplink GRE key, early on in the UE session setup process. Upon handover, the MME provides the reserved key to the second radio network.
Abstract:
Methods and related systems for controlling communication between Network Virtualization Edges (NVEs) in a network virtualization domain are provided. The methods generally involves generating and transmitting, by a Network Virtualization Authority (NVA), a list of participating NVEs to the NVEs comprised in the list, and the selective processing by the NVEs of messages received from other NVEs. By limiting NVE to NVE communication only to NVEs comprised in the list, attacks on the network can be mitigated.
Abstract:
A method of obtaining addressing information may include establishing a communication path through a network between first and second peer devices with a router coupled between the first peer device and the communication path through the network. A communication may he received at the first peer device from the second peer device through the communication path and the router. Moreover, a payload of the communication received at the first peer device from the second peer device may include a public reachability address used by the second peer device to transmit the communication through the network and the router to the first peer device. Related methods of f providing such addressing information and related devices are also discussed.
Abstract:
A method is provided for use in establishing a packet data network, PDN, connection from a user equipment or UE (2), to a 3GPP core network (4) via a non-3GPP access network (6). The method comprises receiving (B1 ) at the non-3GPP access network a request to establish the PDN connection; communicating (B2 to B6) with the 3GPP core network (4) to establish a tunnel for the PDN connection between the non-3GPP access network (6) and the 3GPP core network (4) and to assign an IP address for the tunnel, which tunnel IP address is used subsequently by the non-3GPP access network (6) to distinguish between the new PDN connection tunnel and at least one other such PDN connection tunnel already established for the UE, wherein the 3GPP core network (4) is responsible for assigning the IP address, and comprising sending address information (B3) from the non-3GPP access network (6) to the 3GPP core network (4) as part of the communicating step, the address information enabling the 3GPP core network (4) to assign an IP address for the new PDN connection tunnel that does not clash with an IP address already assigned to any of the at least one another such PDN connection tunnel.
Abstract:
Systems and methods for differentiating between a duplicate MAC address situation and a multiple MAC address movement situation are provided. A node receives a new MAC address determines if it is a known or unknown MAC address by comparing it with a stored MAC address table. If it is a previously known MAC address, the node initiates a duplicate MAC address detection process to determine if at least one of the duplicate MAC addresses is no longer valid or is the result of a MAC mobility event.
Abstract:
Systems and methods according to these exemplary embodiments provide for methods and systems for improving efficiency in communications systems by, for example, bulk release of resources upon a partial node failure. Bulk release messages including, for example, at least one identifier associated with a plurality of resources, can be transmitted from a node toward other nodes to release such resources after the node failure.
Abstract:
Systems and methods according to these exemplary embodiments provide for selectively transmitting a pre-registration, re-registration or de-registration initiation message associated with handing off user equipment between different access systems, e.g., a long term evolution (LTE) system and a high rate packet data (HRPD) system, to reduce dormant sessions. The decision to selectively transmit initiation messages is typically performed by a dormant session management function (DSMF).