Telefonaktiebolaget Lm Ericsson (publ)

Ericsson Gmbh

Loudon Lee Campbell

Yildirim Sahin

Yong Yang

Leonard Eugene Pruitt

Magnus Norlander

Brenda Ann Connor

Mustafa Kocaturk

Ravindra Kabre

Steve Peters

Yildrim Sahin

Saikumar Devulapalli

According to some embodiments, a method in a network node of a wireless communication network comprises determining that a plurality of S1-AP UE contexts maintained by the network node remain valid after a SCTP failure; generating an S1 Setup Request message comprising an indication that the UE contexts remain valid; and communicating the S1 Setup Request message to a MME. In particular embodiments, a method in an MME comprises receiving an S1 Setup Request message from a network node comprising an indication that UE contexts maintained by the network node remain valid after a SCTP failure. The MME determines a plurality of UE contexts maintained by the MME remain valid after a SCTP failure; generates an S1 Setup Response message comprising an indication that UE contexts maintained by the MME remain valid; and communicates the S1 Setup Response message to the network node.

Preserving S1-AP UE contexts on SCTP failover

In a radio telecommunications network, a serving gateway support node controls connections between user equipment nodes and a packet-based network that pass through at least one serving gateway and at least one packet gateway. The serving gateway support node detects that a serving gateway has failed. The serving gateway support node maintains a connection corresponding to the failed serving gateway. The serving gateway support node receives a General Packet Radio Service Tunneling Protocol (GTP) message from the serving gateway, and detects a restart of the serving gateway based on a restart counter value included in the GTP message. After detecting the restart, the serving gateway support node restores the connection to the serving gateway. Related methods, systems, and non-transitory computer-readable media are also disclosed.

Method and apparatus for relocating and restoring connections through a failed serving gateway and traffic offloading

In a radio telecommunications network, a serving gateway support node controls connections between user equipment nodes and a packet-based network that pass through at least one serving gateway and at least one packet gateway. The serving gateway support node detects failure of communications to a first serving gateway. The serving gateway support node responds to the detected failure by initiating relocation of existing connections through the first serving gateway to instead pass through a second serving gateway. The serving gateway support node detects recovery of communications to the first serving gateway, and responds by ceasing relocation of at least some of the existing connections that have not yet been relocated to the second serving gateway. Related methods, serving gateways, and packet gateways are also disclosed.

Methods and apparatus for relocating and restoring connections through a failed serving gateway and traffic offloading

A system, method, and node for releasing resources in a telecommunications network. The method begins by a node assigning a resource-Identification (ID) to an internal resource within the node. At least one internal resource is allocated by the node for a specific Packet Data Network (PDN) connection. Next, a first message containing a resource-ID of the allocated internal resource is sent to one or more peer nodes. The peer nodes store the received resource-ID from the first message. When a node determines that a malfunction of the allocated internal resource of the node occurs, the node sends a second message containing the resource-ID of the malfunctioning internal resource to the peer nodes. The peer nodes then tear down the PDN connection.

System and method of releasing resources in a telecommuncations network

Example embodiments presented herein are directed towards a node, and corresponding method, for managing GTP control plane messaging based on priority information provided in the header of the GTP control plane message. By providing the priority information in the header of the GTP control plane message, message processing may be reduced.

Node and method for obtaining priority information in a header of a control plane message

A method for transmitting upper layer application messages into a SCTP packet in which messages are bundled into a packet comprising a SCTP header and a payload. The method comprises receiving messages from an upper layer application; processing messages through a first process stage in which messages may be added to a first buffer for bundling and then to a secondary process stage in which the bundled messages/messages may be further stored in a second buffer until receiver window and congestion window properties are found to be allowable for transmission; transmitting a SCTP packet of bundled messages; receiving an upper layer application message; resolving the time criticality of the message; if high time criticality, transmitting further the message in a payload portion of a SCTP packet to the secondary stage, otherwise processing the message in the first stage so as to potentially bundle the message with other messages.

SCTP bundling

A method is implemented in a first node for charging of a mobile device in communication with the first node in a communications network. The method includes determining a number of data packets lost between the first node and the mobile device within a predetermined period. The method includes determining a packet loss rate using the number of data packets determined to be lost. The method includes determining whether a first predetermined condition is met based on an evaluation of the determined packet loss rate. The method also includes transmitting, by the first node after determination that the first predetermined condition is met, a notification to a second node causing the second node to stop charging the mobile device for packets sent to the mobile device.

Methods and devices for packet data network gateway suspension for accurate charging in an evolved packet system

System and method of releasing resources in a telecommunication network

A deadlocked resource condition in a pool of shared resources is detected by measuring a characteristic of resource utilization over a predefined time interval and comparing the measured characteristic in accordance with a predicted statistical relationship. If the measured resource utilization is inconsistent with the predicted statistical relationship, a deadlocked resource condition is determined to have occurred.

Growing community of inventors

Plano, TX, United States of America

Loudon Lee Campbell