Telefonaktiebolaget Lm Ericsson (publ)

Optis Wireless Technology, LLC

Mikael Klein

Christer Boberg

Anders Lindgren

Sofie Lassborn

David Cox

Debashish Pattnaik

Bulent Gecer

Erqun Sun

Andreas Anulf

Bo Arne Astrom

Jan Lidin

Kari-Pekka Perttula

Björn Norhammar

Ingemar Lindgren

The present disclosure provides a method in a network node for session control. The method includes: receiving a request for resource reservation for a first session initiated from a user device with a first keyword associated with a first priority; releasing a resource for a second, ongoing session initiated from the user device with a second keyword associated with a second priority lower than the first priority; and reserving a resource for the first session.

Method and network node for session control

A method performed by a first communication node for handling state change of a communication link in a communications network. The first communication node subscribes to state information indicating a state change of a communication link between a UE and a second communication node. The first communication node obtains, from the second communications node, the state information indicating the state change.

Nodes and methods for handling state change of a communication link in a communications network

A method of maintaining SIP registration in a SIP network for a SIP User Agent resident on a client device, the SIP User Agent having registered with a Push Provider to receive Push Notifications via an Operating System of the client device. The method comprises notifying a push gateway, present in a SIP path between the SIP User Agent and the SIP network, that the SIP User Agent is registered with the Push Provider, the push gateway having an interface to a push server of the Push Provider. The method further comprises performing initial SIP registration of the SIP User Agent with the SIP network via a SIP connection extending through the push gateway and thereafter maintaining a re-registration timer at the push gateway and, upon or prior to expiry of the timer, sending a push notification identifying a re-registration event from the push gateway to the client device via the push server. The push notification is received at the client device which passes the event notification to the SIP User Agent. Re-registration of the SIP User Agent is then performed with the SIP network via a SIP connection extending through the push gateway.

Push notification enablement for SIP-based networks

A method of facilitating participation of a WebRTC enabled terminal in an ad hoc conference or chat session hosted in an IP Multimedia Subsystem (IMS) network, where there is an ongoing session between first and second terminals using the IMS network. The method comprises sending a link from the first terminal to a third terminal that is not provisioned or not registered with the IMS network, where the third terminal is said WebRTC enabled terminal and the link provides access to a conference/chat-correlator identifying said ongoing session, and sending a session invite from the third terminal to the first terminal, via a WebRTC gateway, WGw, the session invite including the conference/chat-correlator. The method further comprises, at the first terminal setting up a second session between the first terminal and the third terminal in response to the received session invite, and at the first terminal using the conference/chat-correlator in the received session invite to associate the ongoing and second sessions, and joining both sessions into an ad hoc conference or chat session hosted in the IMS network.

Guest user access in the IP multimedia subsystem IMS

According to a first aspect of the present invention there is provided a method of implementing policy management in an IP Multimedia Subsystem, IMS, for users that are part of an organization or enterprise. The method comprises the steps of separating the users into a plurality of groups, each group being defined by a Group Document that is managed by an XML Document Management Server; for one or more of the groups, including one or more policies in the Group Document of the group; for each of the groups, including in the Group Document identities of groups to which the group is related; and when determining one or more policies that are to be applied to a user, taking account of any policies included in the Group Document of the user's group and any policies included in the Group Document of any related groups.

Policy management

The present invention relates to a method and devices for operating a communication network, in particular a presence SIMPLE network applying polite block and confirm for subscribers to presence data. A method for operating a communication system comprising a presence server and a presence document server is provided, the communication system being adapted to communicate with a first client requesting subscription to the presence data of a presentity using a second client, the method comprising the steps of: sending, in case the subscription is to be confirmed or politely blocked, a request for presence data from the presence server to the presence document server; receiving a message comprising presence data of the presentity from the presence document server; and sending a notification message to the first client based on the received presence data of the presentity.

Permanent presence for polite block and confirm

Requests between first and second IMS network domains are communicated by receiving an XDM request in the first domain. The XDM request relates to an XML document that can be accessed via the XDM request from a location in the second domain. A SIP request is created that includes information identifying it as a request that relates to an XDM request. The SIP request is sent to the second domain so that the SIP request can be routed to the location in the second domain based on the identifying information in the SIP request. A connection for XDM requests between the first and second domains is established.

Secure XDM communication between IMS networks

A method and arrangement in a notification server () for controlling notifications with resource data to a subscribing client (A). When a subscription request is received () from the client for notifications with selected resource data of one or more resources, the access network currently used by the client is determined based on network related information, e.g. obtained from the received subscription request. The delivery of notifications () is then controlled based on the determined current network.

Method and arrangement for handling resource data

The present invention relates to methods and apparatuses for finding out which XDM server a specific user is allocated to in a network with several XDM servers. An HTTP proxy () receives an XCAP request () from an XDM client (), including information related to a user associated with the XDM client. The HTTP proxy checks if the user exists in its storage (), based on the received user information, and if not, the HTTP proxy creates a SIP request () including the user information, and passes it over to a SIP Proxy (). The SIP Proxy finds out which XDM server the user is allocated to by enquiring a subscriber database (), and then the SIP proxy passes the XDM server address information back to the HTTP Proxy (), which is then able to route the XCAP request () to the correct XDM server ().

Method and apparatus for routing XCAP requests

A method and arrangement for handling document requests in a communication services network. When a first document server () receives () a request for a first service document from a requesting party (), the requested first service document (Doc 1) is retrieved (), which comprises a reference (ref) to service related information in a second service document (Doc 2). The first document server () then fetches () said service related information (list) in the second service document using the information reference, and aggregates () the fetched service related information with the first service document. The first document server () finally returns () the first service document together with the aggregated service related information (Doc 1') to the requesting party in response to the received document request. Thereby, the requesting party is not forced to request for more documents than the first service document to obtain the needed information.

Method and arrangement for providing documents

A method, a server and a client for enabling time limited modifications of XML nodes in XML documents, where a modified document can be restored to its original content upon expiry of an expire time, which has been specified for the modification, are provided. A request for a time limited modification of an XML node, including an expire time, is transmitted from a client to a server. At the server, a timer is either started, in case no timer is pending for the XML node, or re-set, in case a timer is already pending for the XML node. The present version of the XML node is stored, before it is modified, according to modification data provided in the request. Upon timer timeout the requested modification will no longer be valid, and therefore the XML node is restored to its stored version of the XML node.

Method and arrangements for enabling modifications of XML documents

Presented are methods and apparatus for optimizing access to service capabilities information for clients associated with user in a communication system. Communications requesting service capabilities information is directed through one or more capabilities application servers for inspection before forwarding the requests to their destination user's client device. If the capabilities application server has previously stored the information then the reply is generated from information stored on the capabilities application server and no request is forwarded to the user's client device, optimizing the process by reducing network communications.

Capability discovery optimization

Embodiments of the present invention include a system and method for implementing a presence system. According to an embodiment of the present invention, responsive to receiving a request for presence information associated with a presentity from a watcher, the presence system receives instructions indicating that an authorization instance other than the presentity shall be given an opportunity to change or verify an authorization rule associated with the request for presence information. As a consequence, the presence system notifies the authorization instance of the request for presence information, thereby enabling the authorization instance to change or verify the authorization rule. The presence system also makes a final decision on the authorization rule on the basis of the instructions and a notification indicating a change or verification of the authorization rule.

Method and system for authorization of presence information

A method enabling a service at a communication network node and a network node adapted to execute the method is provided, wherein a first request, requesting for one or more operations to be associated with a symbol, is received from a first user. The request comprises an instruction, identifying one or more operations. The request triggers the generating of a unique symbol identity, and the creation of a symbol record, associated with the symbol identity, wherein the symbol record, linking the symbol identity to the one or more operations. At the node the symbol identity is also associated with the generated symbol, which is created by a symbol server and forwarded to the first user. Once the symbol has been received by the node in a second request, the symbol identity corresponding to the symbol is retrieved from the symbol server, and the service is enabled by executing the one or more operations according to the symbol record identified by the symbol identity.

Method of enabling a service at a communication network node

Systems and methods for publishing presence information can be performed to reduce the amount of signaling associated with presence publication. A method for publishing presence service information to a presence server includes: receiving, at a registrar node, a session initiation protocol (SIP) message originated by a user equipment (UE) over the air interface; and transmitting a third party register message based upon the received SIP message, from the registrar node, toward a presence server using network signaling, wherein the third party register message includes at least one of information associated with the user of the UE, capabilities of the UE and presence related services offered by the UE.

Growing community of inventors

Huddinge, Sweden

Mikael Klein