Telefonaktiebolaget Lm Ericsson (publ)

Infineon Technologies Ag

Optis Wireless Technology, LLC

Anders Lindgren

Christer Boberg

Mikael Klein

Sofie Lassborn

Justus Petersson

Anders Olof Danne

Jan Lidin

Hans Ake Lindgren

Ola Knut Tylstedt

Mats Bergman

David Cox

Stefan Mikael Andersson

Ted Johansson

Jan Holm

Bo Arne Astrom

Hans Erik Norstrom

Hans Norstr&ouml;m

Jan Gjärdman

Henrik Albertsson

Hans Norström

Björn Norhammar

Bulent Gecer

Ingemar Lindgren

Stefan Jormelius

Susanna Sjöholm

Hans Åke Lindgren

Anders Danne

The invention is about a method in a network node () of an Internet Protocol Multimedia System, IMS, for establishing an additional session between a local user equipment, UE (), which is registered in the IMS, and a remote UE () which public identity is unknown to the local UE (), wherein a first session is established between the local UE () and the remote UE (), comprising the steps of: &#x2014;storing a relation between the public identity of the remote UE () and a further identity which is provided to the local UE (); &#x2014;receiving a request for establishing an additional session, comprising the further identity of the remote UE (); &#x2014;replacing the further identity of the remote UE () with the public identity of the remote UE () and forwarding the request towards the remote UE (). The invention is further about a network node () and a UE () which are adapted to perform the method.

Method and apparatus for establishing an additional session to an anonymous user

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 in a communication network of delivering messages associated with an information exchange service. A message, to be delivered between two entities is interrogated to determining if the data content has already been delivered to the terminating entity. If the data content has not already been delivered to the second entity, the message is transmitted to the second entity unchanged, while the message is modified, so that the modified message comprises a data identifier, identifying the data content, but no data content. The modified message is then transmitted to the terminating entity, and the data identifier is cached together with the associated data content when a successful transmission of the message has been verified. The suggested versioning mechanism enables transmission of messages with a reduced size.

Method of reducing size of presence messages

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

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

A method is provided for use in an XML Document Management Architecture. An Aggregation Proxy of Remote Network to use for accessing an XCAP document in the remote network is determined by performing a DNS lookup.

Method and apparatus for use in XML document management architecture

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

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.

Methods and systems for presence publication using SIP register feature tags

Systems and methods for reactively authorizing publication of information by a third party are coordinated through the use of a presence server. The presence server communicates with other communication nodes/devices to determine and relay publication information. Publication requests that are initially unauthorized, from the perspective of the presence server, are resolved.

Reactive authorization for publications

A method and arrangement for distributing services messages from a client terminal to multiple service units or applications in one or more application servers in a multimedia service network. A service message distributor receives from the terminal, a multi-service message that includes a plurality of service message documents containing service-related data targeted to a specific service unit or application. The message distributor converts the received message into a plurality of individual service messages corresponding to the documents. The individual messages are sent separately toward their respective target service units or applications.

Method and system for distributing a multi-service message from a client to multiple related service applications

A method and arrangement for temporarily withholding notifications with client data of at least one observed client to a watching client when the watching client has an ongoing subscription for receiving the notifications from a client data server. When the watching client receives a subscription suspend trigger, the watching client sends a subscription suspend message to the client data server indicating that client data notifications should be temporarily withheld while retaining the subscription. When the watching client subsequently receives a subscription resume trigger, the watching client sends a subscription resume message to the client data server indicating that the suspended subscription shall be resumed and allowing client data notifications to be delivered again. The watching client then subsequently receives client data notifications according to the subscription.

Growing community of inventors

Älvsjö, Sweden

Anders Lindgren