Abstract:
PROBLEM TO BE SOLVED: To provide a digital wireless communication system that reduces scheduling and ARQ delay. SOLUTION: A method in which a mobile station 1014 transmits data includes a step wherein data is transmitted over a first reverse link channel 406, and a step wherein a corresponding available transport format and resource relative information (TFRI) for demodulating and decoding the transmission data are transmitted over a second reverse link channel 412. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a digital wireless communication system that reduces scheduling and ARQ delay. SOLUTION: A base station 301 schedules one mobile station 104 based upon scheduling information 402 and a link quality measure received from each mobile station 1014, and decodes first data received from the scheduled mobile station 1014. If the decoding ends in failure, the base station 301 rereceives data from the scheduled mobile station 1014 and puts the rereceived data together with previously received data to generate composite data. In this case, the generation of composite data is performed until the decoding of the composite data is successful or batch erasure of a hybrid automatic retransmission request (H-ARQ) buffer is performed. When decoding of one of the first data and composite data is successful, an acknowledgement signal is transmitted to the mobile station 1014 and batch erasure of the H-ARA is performed in response to the acknowledgement signal. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To solve a problem that a mechanism for a single resource allocation and a mechanism capable of allocating resources based on demands of each of user equipment are required in the case of a frame or a transmission time interval (TTI) constituted of a chain of sub-frames. SOLUTION: The present invention relates to a method in a wireless communication terminal (103) including receiving a plurality of sub-frames having time-frequency resource elements and resource allocation fields associated with a corresponding sub-frame, wherein the resource allocation fields indicate a resource assignment. In another embodiment, the terminal receives a radio frame comprising a plurality of sub-frames and a frequency diverse allocation field indicating frequency diverse resource allocations in multiple sub-frames of the radio frame. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a wireless communication terminal which communicates by a plurality of subcarriers which are divided into a plurality of frequency bands that include one or more subcarriers, respectively. SOLUTION: The wireless communication terminal measures a channel quality indicator (CQI) of a plurality of frequency bands (310), discriminates a subset of a frequency band whose channel quality indicator is measured (320), and transmits a report which discriminates a subset of a frequency band whose channel quality indicator is measured or transmits a report which discriminates a frequency band that is not included in the subset (330). In some embodiments, a subset CQI value related to a subset of frequency band is included in the report at least. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To cope with a requisite problem for a cyclic prefix whose length is variable in a mixed mode radio communication system. SOLUTION: A method in a radio communication network infrastructure entity (200) includes a process for transmitting a sequence of a plurality of symbols. One portion of the symbols is related to a first transmission mode, for example a point-to-point transmission mode. Another portion of the symbols is related to a second transmission mode that is different from the first one, for example a point-to-multipoint transmission mode. The method also comprises a process for converting the format of symbols related to the first transmission mode by using a first cyclic prefix before the process for transmitting the symbols, and a process for converting the format of symbols related to the second transmission mode by using a second cyclic prefix. In one embodiment, the continuation time of the cyclic prefix is different. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
A receiver (500) utilizes parameters generated by a Viterbi decoder (530) to determine one of a plurality of coding rates in which user information is transmitted. The receiver (500) combines the parameters in a predetermined manner, the result of which is a detection statistic (dij). By utilizing the detection statistic (dij), the coding rate at which user information is transmitted is accurately determined.
Abstract:
A code division multiple access (CDMA) communicating system reduces interference by reducing the encoding rate for selected mobiles. The system (400) primarily uses link related characteristics such as, inter alia, distance measurements, physical resource power, and mobile determined noise, to determine which mobiles require an encoding rate reduction. Once determined, the encoding rate of the determined mobiles is reduced, which in turn reduces self-interference and enhances system capacity.
Abstract:
A wireless communication system that communicates ( 500 ) frames having first and second sub-frames ( 510, 520 ) with time-frequency resource elements. The first sub-frame including first reference symbol information and the second sub-frame including second reference symbol information, and not more than one of the first and second sub-frames including user specific radio resource assignment information. Wireless communication entities receiving the frames process the time-frequency elements of the first sub-frame using the first reference symbol information and processing the time-frequency elements of the second sub-frame using the second reference symbol information.
Abstract:
A communication device is disclosed. The device is configured to generate a first block of first cyclic redundancy check (CRC) parity bits on a transport block wherein the first block of CRC parity bits is based on a first generator polynomial, to attach the first block of CRC parity bits to the transport block and to segment the transport block into multiple code blocks. The processor is also configured to generate a second block of CRC parity bits on each code block wherein the second block of CRC parity bits is based on a second generator polynomial that is different than the first generator polynomial. The first and second generator polynomials have a common degree. A second block of CRC parity bits is attached to each code block and the code blocks are concatenated after channel encoding.
Abstract:
A wireless communication device for receiving a frame corresponding to a transmission time interval, the frame having a control channel including at least two control channel elements and an embedded bit sequence, the location of which indicates a portion of the control channel used for radio resource assignment, wherein the portion of the control channel used for radio resource assignment may be less than the entire control channel of the frame having the embedded bit sequence, and wherein the at least two frames may use different portions of the control channel for radio resource assignment.