Apple Inc.

Alcatel Lucent

Microsoft Technology Licensing, LLC

Research in Motion Corporation

Nortel Networks Corporation

Rockstar Bidco, LP

Blackberry Corporation

Sarah Boumendil

Jianglei Ma

Wen Tong

Peiying Zhu

Ming Jia

Evelyne Le Strat

Hua Xu

Hang Zhang

Moussa Abdi

Denis Fauconnier

Jianming Wu

Evelyne Lestrat

Matthew P J Baker

Shin Horng Wong

Bastien Massie

David Choukroun

Physical layer structures and access schemes for use in such networks are described and in particular initial access channel (IACH) structures are proposed. A spectrum efficient downlink (DL) IACH design supports different types of User Equipment (UE) capabilities and different system bandwidths. An IACH includes the synchronization channel (SCH) and broadcast-control channel (BCH). A non-uniform SCH for all system bandwidths is provided, as well as scalable bandwidth BCH depending on system bandwidth. An initial access procedure is provided, as well as an access procedure.

Initial access channel for scalable wireless mobile communication networks

Spatial multiplexing and transmit diversity can improve the capacity of a wireless communication system. The system and method adapts communication schemes for communication systems with multiple antennas utilizing at least two transmission modes. The at least two transmission modes can, but are not necessarily, used for uplink communications. The two transmission modes may be chosen from the group consisting of a single antenna mode, a diversity mode a spatial multiplexed mode and a mixed diversity and spatial multiplexed mode. The at least two transmission modes may involve adaptation among multiple transmitters. At least one receiver may indicate a transmission mode to be used by a transmitter for a subsequent transmission. A transmitter may determine a transmission mode to be used for a subsequent transmission. The transmission mode can be based on channel sounding.

Adaptive transmission systems and methods

Rank adaptive transmission methods and apparatuses

Apparatus and method for encoding and transmitting feedback information from a first network node to a second network node in a multi-carrier wireless telecommunications network. The first network node is operable to receive signals from the second network node on two or more reception carriers and transmit data to the second network node on one or more transmission carriers. Each reception carrier being transmitted within an associated a radio band. The method comprises the steps of: (i) monitoring for a signal on at least two of the reception carriers; (ii) generating feedback information for at least two of the reception carriers based upon received signals; (iii) grouping the feedback information for reception carriers being transmitted within the same radio band; and encoding said grouped feedback information for two or more reception carriers being transmitted within the same radio band; and iv) transmitting the encoded feedback information to the second network node on one or more transmission carriers.

Feedback information in a multi-carrier wireless telecommunications network

The present invention provides methods and devices for mitigating inter-cell interference in communication environments having a plurality of cells. In some embodiments, a time-frequency transmission resource that includes multiple sub-carriers over multiple OFDM symbol intervals is partitioned into a first zone and a second zone. In the first zone, transmissions are transmitted on at least one frequency sub-band which is common to all of the plurality of cells. In the second zone, transmissions are transmitted on at least one frequency sub-band which is used by less than all of the plurality of cells, so as to mitigate inter-cell interference. In some embodiments, in the first zone transmissions are transmitted using a transmission power which is common to all of the plurality of cells and in the second zone transmissions are transmitted using a transmission power which is used by less than all of the plurality of cells so as to mitigate inter-cell interference.

Methods and systems to mitigate inter-cell interference

The invention relates to a method for controlling transmission over a radio channel between a sending unit and a group of receiving units in a radio communication system, the method comprising the following steps relating to information aimed at a subgroup of at least one receiving unit of said group of receiving units:

Method for controlling transmission over a radio channel between a sending unit and receiving units and equipments for implementing the method

A method and system for wireless frequency division multiple access communications in the uplink and/or downlink directions. A first time duration for transmission of a data payload block is established, and the transmission is processed using a first frequency domain or a time domain. A second time duration for transmission of at least one pilot block is established, and the transmission is processed using a second frequency domain or the time domain, the second time duration is not greater than the first time duration.

System and method for frequency division multiple access communications

A method and system for wireless frequency division multiple access communications in the uplink and/or downlink directions, having an improved pilot insertion scheme for single carrier based communications is provided. A first time duration for transmission of a data payload block () is established, and the transmission is processed using a first frequency domain or a time domain. A second time duration for transmission of at least one pilot block () is established, and the transmission is processed using a second frequency domain or the time domain, the second time duration () is not greater than the first time duration ().

A control method allocates to a base station, at a control member of the base station, a list of channels shared by several terminals containing several sets of shared channels. For a communication session between the base station and a specific terminal, the method indicates to the terminal the list of shared channels allocated to the base station. At the base station, the method selects for the terminal one of the sets of shared channels, and independently of the control member, indicates the selected set to the terminal via a dedicated channel.

Method for controlling communication channels and base station and terminal therefor

A base station () which can communicate with radio terminals on common and dedicated channels according to specific speeds, is provided with a band-pass which is available according to the use of the common and dedicated channels in order to receive data from a radio terminal on a high-speed uplink channel. An available band-pass is determined in the base station in order to receive the data from at least one radio terminal () on at least one high-speed dedicated uplink channel. A first indication relating to the available band-pass is subsequently transmitted on a common downlink channel. At least one second indication relating to a percentage of the available band-pass which should not be exceeded by the radio terminal during a forthcoming transmission on said high-speed dedicated uplink channel is then transmitted independently for each radio terminal.

Growing community of inventors

Boulogne Billancourt, France

Sarah Boumendil