Telefonaktiebolaget Lm Ericsson (publ)

H&aring;kan Clas Andersson

John Walter Diachina

Alex Krister Raith

Bengt Y Persson

Francois Sawyer

Anthony J Sammarco

Johan Georg Uggmark

H&aring;kan Persson

Bo Christer Vilhelm Johansson

A method and apparatus for providing handoffs in a cellular communication system is disclosed wherein cells within the communication system share at least one transceiver unit or transceiver units from different cells are placed in close proximity to each other so as to create a larger overlapping region in which mobile stations can be handed off. The shared transceiver unit is able to transmit and receive radio signals with the communication frequencies assigned to the cells sharing the transceiver unit.

Creation of overlapping cells when using multi casting

A mobile radio station includes status indicators and control buttons. At least one of the indicators and at least one of the buttons are merged into a combined status indicating control button arrangement. Each arrangement includes a light device provided at a switch attached to a flex-film or a PCB, and pressure devices provided at the switch. The pressure devices end up in a transparent button.

Mobile telephone apparatus

A communications system in which information is transmitted in successive time slots grouped into a plurality of superframes which are, in turn, grouped into a plurality of hyperframes. A remote station is assigned to one of the time slots in each of the superframes for paging the remote station, each hyperframe including at least two superframes, and the information sent in the assigned time slot in one superframe in each hyperfame is repeated in the assigned time slot in the other superframe(s) in each hyperframe. Each superframe can include a plurality of time slots used for sending paging messages to remote stations, grouped into a plurality of successive paging frames, and the time slot to which the remote station is assigned is included once in every paging frame. Also, each superframe may include time slots comprising a logical channel for broadcast control information and time slots comprising a logical paging channel. Information sent in the assigned time slot may direct the remote station to read the broadcast control information, and the information may have been encoded according to an error correcting code and include a plurality of bits having polarities that are inverses of cyclic redundancy check bits produced by the encoding. Also, the broadcast control information may comprise special messages that are included in respective time slots comprising a logical special message channel, the time slots of the special message channel may be grouped in successive SMS frames, and the SMS frames may be synchronized to start with a start of a superframe.

Digital control channels having logical channels for multiple access radiocommunication

A driver circuit,for driving functional devices, such as an LED,, a buzzer,, a voltage converter or an EL-lamp, and a method of operating the driver circuit are provided. The circuit includes an inductor,, first and second connection points for connection of a voltage source,, switching means,which when in a first state allows an electrical current to flow from the first connection point and through the inductor to thereby charge the inductor with energy and when in a second state substantially prevents an electrical current from flowing from the first connection point to the inductor and at least two functional devices, the function of which are activated when energy is discharged from the inductor to the at least two functional devices.

Growing community of inventors

Ekerö, Sweden

Håkan Clas Andersson

Growing community of inventors

Ekerö, Sweden

H&aring;kan Clas Andersson

Håkan Clas Andersson