Apple Inc.

Microsoft Technology Licensing, LLC

Blackberry Corporation

Research in Motion Corporation

Jun Yuan

Mo-Han Fong

Sophie Vrzic

Robert Novak

Dong-Sheng Yu

Jianglei Ma

Hang Zhang

Hosein Nikopourdeilami

Kelvin Kar-Kin Au

Wen Tong

Jianming Wu

Mohammadhadi Baligh

Hosein Nikopour

Dongsheng Yu

To effectively and efficiently provide control information, a broadcast pointer channel (BPCH) may be used to identify the type and perhaps relative location of control information that is being provided in a given frame structure, such as a sub-frame, frame, or superframe. A sub-frame (or like framing entity, such a frame or superframe) may have a BPCH and a corresponding system control information segment in which control information may reside. The system control information segment may have any number of control information blocks, wherein each control information block that is present may correspond to a particular type of control information. The BPCH is used to identify the type of control information that is present in a corresponding system control information segment, and if needed or desired, the relative locations of the various control information.

Communication of control information using alert flag and version number

Methods described herein are for wireless communication systems. One aspect of the invention is directed to a method for a HARQ process, in which the HARQ process includes a first transmission of an encoder packet and at least one retransmission. The method involves allocating a transmission resource for each respective transmission. The method involves transmitting control information from a base station to a mobile station for each respective transmission. The control information includes information to uniquely identify the HARQ process and an identification of one of a time resource, a frequency resource and a time and frequency resource that is allocated for the transmission. In some embodiments of the invention, specific control information is signalled from a base station to a mobile station to enable RAS-HARQ operation. In some embodiments of the invention, retransmission signaling in included as part of regular unicast signaling used for both first transmission and retransmissions. In some embodiments of the invention, a 3-state acknowledgement channel and associated error recovery operation enables the base station and mobile station to recover from control signaling error and reduce packet loss.

Methods and systems for HARQ protocols

A method and system are provided having an uplink control structure and a pilot signal having minimal signal overhead for providing channel estimation and data demodulation in a wireless communication network. The uplink control structures enable mobile terminals to communicate with corresponding base stations to perform various functions including obtaining initial system access, submitting a bandwidth request, triggering a continuation of negotiated service, or providing a proposed allocation re-configuration header. A dedicated random access channel is provided to communicatively couple the base station and the mobile terminal so that the mobile terminal can select a random access signaling identification. A resource request is received at the base station to uplink resource information from the mobile terminal and an initial access information request is received from the mobile terminal to configure the base station connection. Pilot signals with varying density configurations are provided to include low density symbol patterns for multiple contiguous resource blocks and high density symbol patterns for single resource blocks.

Uplink control in a wireless communication network

Methods, base stations and access terminals for uplink signalling are provided. Resource request channel characteristics such as location in time-frequency, sequence, time slot, are assigned to each access terminal to distinguish their resource requests from the resource requests of other access terminals. Access terminals make requests using a resource request on a resource request channel having the assigned characteristics. The base station can then determine which access terminal transmitted the resource request based on the resource request channel characteristics of the resource request channel upon which the resource request was received. The base station then transmits a response to the request which may for example be a new resource allocation, a default allocation or a renewal of a previous allocation.

Systems and methods for uplink signalling

Mechanisms for feedback of channel quality information (CQI) in a multi-carrier environment are disclosed. A mobile station may include one or more antennas, and a transceiver coupled to the one or more antennas. The transceiver may be configured to receive (e.g., simultaneously) signals on a plurality of carriers. Each of the carriers may include synchronization channels. The transceiver may be further configured to, for each of one or more of the carriers: generate channel quality information (CQI) for the carrier based on pilot signals in the carrier; transmit the CQI for the carrier. The one or more carriers for which CQI is generated and transmitted may be determined by configuration information received from a base station.

Feedback of channel quality information in a multi-carrier environment

Cross-carrier scheduling

Growing community of inventors

Ottawa, Canada

Jun Yuan