Neocific, Inc.

Neo Wireless LLC

Guangdong Oppo Mobile Telecommunications Corp., Ltd.

Intellectual Ventures Ii LLC

Other

Amazon Technologies, Inc.

Callahan Cellular LLC

Haiming Huang

Xiaodong Li

Titus Lo

Kemin Li

Ruifeng Wang

Xiadong Li

Jun Meng

Methods and apparatus in a multi-carrier cellular wireless network with random access improve receiving reliability and reduce interference of uplink signals of a random access, while improving the detection performance of a base station receiver by employing specifically configured ranging signals.

Methods and apparatus for random access in multi-carrier communication systems

A mobile station using orthogonal frequency division multiple access (OFDMA). The frequency processing circuitry and the processor of the mobile station are configured to scan spectral bands for a first signal. The first signal having synchronization and cell identification information, and is received in a first band of a cell having a full bandwidth. The first band being within a first bandwidth part and the first bandwidth part being a portion of the full bandwidth of a cell that comprises a plurality of bandwidth parts. Further, the frequency processing circuitry and the processor configured to receive and process signals in the first bandwidth part and configured to switch to receive and process a second bandwidth part, the second bandwidth part being different frequency size than the first bandwidth part.

Methods and apparatus for multi-carrier communications with variable channel bandwidth

A method for receiving broadcast information in an OFDM communication system may comprise receiving, by a mobile station, a periodically broadcast scheduling message from a base station. The periodically broadcast scheduling message may be an OFDM signal which indicates for each type of a plurality of types of broadcast information included in broadcast information, a pattern of frames to monitor for the type of broadcast information. The periodically broadcast scheduling message may also indicate a length of time to monitor. The method may further comprise monitoring and receiving, by the mobile station, information for at least one of the plurality of types of broadcast information, based on the periodically broadcast scheduling message.

Methods and apparatus for power efficient broadcasting and communication systems

An arrangement is disclosed where in a multi-carrier communication system, the modulation scheme, coding attributes, training pilots, and signal power may be adjusted to adapt to channel conditions in order to maximize the overall system capacity and spectral efficiency without wasting radio resources or compromising error probability performance, etc.

Methods and apparatus for multi-carrier communication systems with adaptive transmission and feedback

A method for receiving broadcast information in an OFDM communication system may comprise receiving, by a mobile station, a periodically broadcast scheduling message from a base station which indicates for each type of a plurality of types of broadcast information included in broadcast information, a pattern of frames to monitor for the type of broadcast information and indicates a length of time to monitor. The mobile station may monitor for information corresponding to at least one of the plurality of types of broadcast information, based on the periodically broadcast scheduling message.

Method and apparatus for receiving broadcast information in an OFDM communication system

A method and system for minimizing the control overhead in a multi-carrier wireless communication network that utilizes a time-frequency resource is disclosed. In some embodiments, one or more zones in the time-frequency resource are designated for particular applications, such as a zone dedicated for voice-over-IP (VoIP) applications. By grouping applications of a similar type together within a zone, a reduction in the number of bits necessary for mapping a packet stream to a portion of the time-frequency resource can be achieved. In some embodiments, modular coding schemes associated with the packet streams may be selected that further reduce the amount of necessary control information. In some embodiments, packets may be classified for transmission in accordance with application type, QoS parameters, and other properties. In some embodiments, improved control messages may be constructed to facilitate the control process and minimize associated overhead.

Method and system for multi-carrier packet communication with reduced overhead

In a broadband wireless communication system, a spread spectrum signal is intentionally overlapped with an OFDM signal, in a time domain, a frequency domain, or both. The OFDM signal, which inherently has a high spectral efficiency, is used for carrying broadband data or control information. The spread spectrum signal, which is designed to have a high spread gain for overcoming severe interference, is used for facilitating system functions such as initial random access, channel probing, or short messaging. Methods and techniques are devised to ensure that the mutual interference between the overlapped signals is minimized to have insignificant impact on either signal and that both signals are detectable with expected performance by a receiver.

Channel probing signal for a broadband communication system

A mobile station may comprise a receiver to receive, from a base station, a broadcast signal indicating a TDD configuration of uplink OFDM symbols and downlink OFDM symbols. The receiver may receive an indication of a symbol range and a subchannel range for use in transmission of CQI feedback. The mobile station may receive first downlink data and transmit first uplink data, using the TDD configuration, wherein the first uplink data comprises CQI feedback information transmitted in accordance with the symbol range and the subchannel range. The receiver may receive second downlink data, from the base station, on a different frequency as the first uplink data is transmitted, while the first uplink data is transmitted.

Broadcast signal indicating one or more subframe configurations

Methods and apparatus for subframe configuration and generation in a multi-cell multi-carrier system. A frame for radio transmission in the system consists of multiple subframes, and each subframe consists of multiple Orthogonal Frequency Division Multiplexing (OFDM) symbols. Training symbols, frequency-domain data scrambling, size of Fast-Fourier Transform (FFT), or length of cyclic prefix can be configured differently for each subframe to facilitate different applications, such as unicasting or broadcasting.

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Bellevue, WA, United States of America

Haiming Huang