Motorola Corporation

Intel Corporation

Mindspeed Technologies, Inc.

Nicholas William Whinnett

William Neil Robinson

Anthony P Van Den Heuvel

Ravi Kuchibhotla

Robert T Love

Jonathan A Gibbs

Fiona Clare Angharad Somerville

Amativa Ghosh

Shilpa Talwar

Kenneth Anderson Stewart

Yang-Seok Choi

Kamyar Rohani

Thushara Hewavithana

Jan Schreck

Jon Alastair Gibbs

Kiran Kumar Kuchi

Steven Andrew Wood

Francesc Boixadera

Oscar Clop

Various embodiments herein provide techniques for reducing computational complexity in multiple input multiple output (MIMO, e.g., massive MIMO (mMIMO)) communications, such as efficient decomposition of a channel covariance matrix. Embodiments enable accurate mMIMO channel estimation with relatively low computational complexity compared with prior techniques. Additionally, embodiments may provide efficient beamforming and/or spatial compression. Other embodiments may be described and claimed.

Techniques to improve computational efficiency in massive multiple input multiple output (MIMO) systems

A method of controlling admission of a user equipment to a cell of a multi-mode base station, being a base station arranged to operate as a plurality of cells, the plurality of cells comprising at least a first cell and a second cell, and the method comprising: determining information relating to the first cell, and controlling admission of a user equipment to the second cell in dependence on the information relating to the first cell.

Multimode base station

A method of operating a base station such that the method comprises determining whether there are any mobile devices that are not associated with the base station that require protection from interference caused by downlink transmissions of the base station and setting a maximum permitted transmission power for the base station based on the result of the step of determining. A base stations operating according to this method is also disclosed.

Method and device in a communication network

Interference cancellation circuitry is provided for reconstructing a wirelessly transmitted modulated signal in a receiver using output of a decoder for calculating per-bit probabilities corresponding to bit-by-bit estimates of a coded message from which one bit hard decisions and multi-bit soft decision can be derived. A soft modulator reconstructs the transmitted modulated signal by calculating a weighted superposition depending upon the hard decisions and at least one combined value computed by combining two or more of the multi-bit soft decisions corresponding to different bits of the coded message. A soft modulation method using combined value(s) in a weighted superposition of hard decisions and computer program code for calculating the combined values and regenerated modulated signal are also provided. Other embodiments may be described and claimed.

Wireless interference cancellation

There is provided a method of method of estimating a quality of a signal, the method in a first device comprising measuring a signal transmitted from a second device to a third device; determining a value of a metric from an autocorrelation function of the measured signal; and determining an estimate of the quality of the signal from the determined metric.

Method, base station and computer program product for controlling access to the base station, the base station being arranged to serve a zone, the zone comprising a first cell implementing an access mode as one of an open access mode, a hybrid access mode, and a closed access mode. Operating conditions of the zone served by the base station are determined and then the access mode of the first cell is controlled based on the determined operating conditions of the zone served by the base station.

Accessing a base station

There is provided a method of operating a base station, the method comprising determining whether there are any mobile devices that are not associated with the base station that require protection from interference caused by downlink transmissions of the base station; and setting a maximum permitted transmission power for the base station based on the result of the step of determining.

A method for rate selection by a communication device for enhanced uplink during soft handoff in a wireless communication system includes a first step of receiving information from a scheduler. This information can include one or more of scheduling, a rate limit, a power margin limit, and a persistence. A next step includes determining a data rate for an enhanced uplink during soft handoff using the information. A next step includes transmitting to a serving base station on an enhanced uplink channel at the data rate determined from the determining step.

Enhanced uplink rate selection by a communication device during soft handoff

HARQ ACK/NAK coding for a communication device during soft handoff

In a method for wireless data communication between a base station and a subscriber unit in a wireless communication system, groups of symbols of an input data stream are commutated to produce a plurality of commutated data streams. The plurality of commutated data streams are then transformed to produce a plurality of transformed data streams. Next, each transformed data stream is spread with a selected one of a plurality of spreading codes to produce a plurality of antenna signals. Finally, each of the plurality of antenna signals is transmitted using a selected one of a plurality of spaced apart antennas, wherein the plurality of spaced apart antennas are spaced apart to provide transmit diversity. In one embodiment, the transform is a space-time transform.

Method and system for transmitting and receiving signals transmitted from an antenna array with transmit diversity techniques

A communications operating system is provided herein. The communications operating system having a common communication system comprising a radio frequency transceiving means for transmitting and receiving radio frequency signals and a system list means for storing a list of communication systems available. The system also includes a feature list means for storing a list of feature programs, where the feature programs comprise at least one of an enabling program to enable resident functions, a high-level design specification, and an executable feature specification.

Communications operating system and method therefor

Radio communications device and method

A method as shown in FIG. 2 for allocating resources in a radio communications system having a plurality of communications resources for at least one receiver and transmitter to communicate over where the communications resources have signal levels which vary due to a multipath environment resulting in periods of poor communication quality over at least one particular communications resource including measuring at a first receiver a parameter indicative of a quality of communications between the first receiver and a first transmitter over a currently assigned communications resource and determining whether to allocate a different communications resource based on the measured parameter in order to effectively reduce periods of poor communications quality between the first receiver and the first transmitter.

Growing community of inventors

Marlborough, United Kingdom

Nicholas William Whinnett