1
Niclas Wiberg, Gunnar Bark, Ke Wang Helmersson: Partly orthogonal multiple code trees. Telefonaktiebolaget LM Ericsson, January 3, 2006: US06982946 (35 worldwide citation)

A method, system and apparatus for spreading physical channels using partly orthogonal multiple code trees. A portion of a first code tree is used to spread the physical channels. This first code tree is a combination of a channelization code sequence and a first scrambling code sequence. A portion ...


2
Thomas Rimhagen, Ke Wang Helmersson: Dynamic allocation of packet data channels. Telefonaktiebolaget LM Ericsson, Nixon & Vanderhye P C, April 13, 2004: US06721278 (22 worldwide citation)

In a cellular telecommunications system, a method of dynamically allocating packet data radio channels among users competing in a same cell for the channels involves determining a user ranking for each of plural competing users in the cell, and classifying each of the plural competing users into one ...


3
Ke Wang Helmersson, Erik Geijer Lundin, Fredrik Gunnarsson, Melanie Petren: Estimating and limiting inter-cell interference. Telefonaktiebolaget LM Ericsson, Nixon & Vanderhye P C, February 28, 2012: US08126403 (12 worldwide citation)

A cellular radio communication system includes a first serving cell and a second non-serving cell. A mobile radio is currently served by a first base station in the first cell. An uplink radio transmission from the mobile radio will cause or causes inter-cell interference in the second non-serving c ...


4
Gunnar Bark, Niclas Wiberg, Ke Wang Helmersson: Method and apparatus for providing adaptive fast radio channel congestion control. Telefonaktiebolaget LM Ericsson, April 22, 2003: US06553235 (9 worldwide citation)

Downlink congestion is accurately detected and congestion control is more effectively provided without decreasing the system downlink capacity. The characteristics of the downlink transmission of the base station are monitored and used to selectively adjust a fast congestion control (FCC) alarm thre ...


5
Klas Johansson, Ke Wang Helmersson: Inter-cell interference control in an uplink multi-carrier radio communications system. Telefonaktiebolaget LM Ericsson, Nixon & Vanderhye P C, February 26, 2013: US08385832 (8 worldwide citation)

A multi-carrier cellular radio communication system includes a serving base station associate with a serving cell currently serving a mobile radio and a non-serving base station within range of the mobile radio and associated with a non-serving cell. The mobile radio can transmit to the serving base ...


6
Peter Lindskog, Ke Wang Helmersson, Anneli Crona: Adaptive control of telecommunications systems with measurements of varying time-delays. Telefonaktiebolaget L M Ericsson, Jenkens & Gilchrist P C, May 7, 2002: US06385173 (7 worldwide citation)

A method and system that enables the changing of the gain in a closed loop (e.g., self-configuring) telecommunications system based on the age of the available measurements. A high gain is used when measured data are “fresh”, so as to obtain a good performance (e.g., a fast response) for the telecom ...


7
Niclas Wiberg, Eva Englund, Ke Wang Helmersson, Janne Peisa, Johan Torsner, Christer Edholm, Stefan Parkvall, Maria Edvardsson, Maria Samuelsson: Load control in shared medium many-to-one communication systems. Telefonaktiebolaget L M Ericsson, Roger S Burleigh, November 18, 2008: US07454173 (5 worldwide citation)

A load control method is described herein that enables a base station to broadcast three downlink signals including a busy indicator, a maximum resource indicator and a minimum resource indicator to a mobile terminal. In response to receiving the downlink signals, the mobile terminal limits the util ...


8
Eva Englund, Fredrik Gunnarsson, Erik Geijer Lundin, Ke Wang Helmersson: Adjustments of IUB load measurements. Telefonaktiebolaget LM Ericsson, Coats & Bennett P L L C, July 17, 2012: US08224345 (3 worldwide citation)

A method may include determining whether a discrepancy exists between scheduling headroom computable by a first device and scheduling headroom computable by a second device, determining one or more load measurements that the second device bases its computation of the scheduling headroom if it is det ...


9
Ke Wang Helmersson, Martin Hessler: System and method for determining the severity of interference in different areas of a cellular radio network and coordinating radio resource management features in response. Telefonaktiebolaget L M Ericsson, May 13, 2014: US08725079 (2 worldwide citation)

An interference analysis tool for identifying an interference problem area in a cellular radio network in which at least a first User Equipment (UE1) and a second UE (UE2) operate. The tool receives signal quality measurements and determines uplink or downlink interference severity. For UE2 uplink i ...


10
Ke Wang Helmersson, Eva Englund, Patrik Karlsson: Method of controlling power in a WCDMA system. Telefonaktiebolaget L M Ericsson, Myers Bigel Sibley & Sajovec P A, November 27, 2012: US08320266 (2 worldwide citation)

A method and a device relating to a scheduling mechanism in a base station in a WCDMA system are disclosed. The mechanism enables the base station to rapidly adapt to users momentary traffic demands and to interference variations, a dynamical adjustable margin is proposed in this invention. The adju ...