Telefonaktiebolaget Lm Ericsson (publ)

Ulrik Wahlberg

Dalibor Turina

Maria Hultström

Carin Omurcali

Tomas Hedberg

Ros-Marie Furtenback

Alessio Terzani

Stefan Ström

Embodiments include methods performed by a target RAN controller for handling relocation of a UE connection from a source RAN controller during an ongoing wireless communication. Such methods include, when a distance between the UE and a border between source and target RAN controllers is below a threshold value, receiving from the source RAN controller an order to establish radio link(s) to be controlled by the target RAN controller for the ongoing wireless communication and establishing radio link(s) for the ongoing wireless communication accordingly. Such methods include, based on existence of certain conditions, receiving from the source RAN controller a request to initiate a procedure for relocating the UE connection from source to target RAN controller. Such methods include creating an RRC configuration to be used by the UE after the relocation to the target RAN controller and sending the created RRC configuration to the source RAN controller.

Relocation of user equipment connection

A method performed by a source Radio Network Controller (RNC) for handling a relocation of a User Equipment (UE) connection from the source RNC to a target RNC to serve the UE in an ongoing wireless communication is provided. An interface between the source RNC and the target RNC is available. When all radio links in the ongoing wireless communication are controlled by the target RNC and a triggering condition is fulfilled for relocation of the UE connection from the source RNC to the target RNC, the source RNC decides () to discontinue to use said interface. Then a core network is used for sending () to the target RNC, a triggering of the relocation procedure for relocating the source RNC to the target RNC to serve the UE. A Radio Resource Control (RRC) configuration defined by the target RNC to be used after the relocation to the target RNC is then obtained () via the core network. The RRC configuration, defined by the target RNC, is sent () to the UE enabling the UE to switch from an RRC configuration defined by the source RNC to the RRC configuration defined by the target RNC.

Relocation of a user equipment connection from a source radio network controller RNC to a target RNC initiated via a core network

The present invention relates to handover in a communications system, and more especially it relates cell change using Iu-interface dependent neighbor-cell lists, particularly in a Universal Mobile Telecommunications System, UMTS or WCDMA system.

Apparatus and methods for improved handover in multi-operator shared radio access network communications systems

Idle mobile stations are steered to a particular cell or service area to accommodate subscriber preferences or restrictions, subscription services, or network operator preferences or restrictions and/or to accomplish load redistribution or other network management functions. Multiple idle mobile station steering factors are considered. Steering may be accomplished using a variety of techniques such as rejecting registration attempts in certain cells and accepting those attempts in others and adjusting cell broadcast parameters.

Method and apparatus for steering idle mobile stations

Load redistribution and other benefits may be achieved by dynamically distributing or 'steering' idle mobile stations to a particular cell or area. For example, idle mobile stations may be steered from a loaded cell to less loaded cells by changing one or more cell broadcast parameters.

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Täby, Sweden

Ulrik Wahlberg