Abstract:
PROBLEM TO BE SOLVED: To make an efficient use of communication resource in data rate control of reverse link communication in a communicating system. SOLUTION: The communication system includes determining movement for choosing payload size (data rate) of reverse link transfer from a mobile station to a base station. The mobile station can store a predetermined table containing a power level ratio (TPR) of traffic channel and pilot channel, and each entry corresponds to the size of data payload, and namely as a result corresponds to a transfer data rate in the predetermined time frame. The payload size is chosen based on the permitted -TPR. The permitted -TPR and a target -TPR are adjusted according to a TPR command received from a base station. When the permitted -TPR is smaller than the target -TPR, fast-ramp-up adjustment of the permitted -TPR is performed. In the fast-ramp-up mode, a down TPR command is ignored in the adjustment of the permitted -TPR. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method and apparatus for high rate packet data and low delay data transmissions.SOLUTION: There is provided a method for combination of packet data and low delay data transmissions in a wireless communication system (50). In one embodiment, a parallel signaling channel provides a message to receivers (56, 58, 60) indicating a target recipient of packet data. The message also identifies the transmission channels used for packet data transmissions. Each receiver then selectively decodes only packets where the message identifies the receiver as a target recipient. The data packets stored in a buffer are ignored if the target recipient is another mobile unit. In one embodiment, the message is sent concurrently with the data packet on a parallel channel. In one embodiment, the message is punctured into the high rate packet data transmission.
Abstract:
PROBLEM TO BE SOLVED: To provide a method and an apparatus for high rate packet data and low delay data transmissions.SOLUTION: Provided is a method for combination transmission of packet data and low delay data in a wireless communication system (50). In one embodiment, a parallel signaling channel provides a message to receivers (56, 58, and 60) indicating a target recipient of packet data. The message also identifies transmission channels used for packet data transmissions. Each receiver may then selectively decode only packets where the message identifies the receiver as a target recipient. The data packets stored in a buffer are ignored if the target recipient is another mobile unit. In one embodiment, the message is sent concurrently with the data packet on a parallel channel. In one embodiment, the message is punctured into the high rate packet data transmission.
Abstract:
PROBLEM TO BE SOLVED: To minimize the total transmission power level of a pilot channel and data channels from a mobile station in a reverse link communication.SOLUTION: A method and apparatus for minimizing transmission power level provides efficient data rate control and power control processes by transmitting a primary and a secondary pilot channels associated with a data channel. The primary and secondary pilot channels are used for decoding data. A ratio of power levels of the primary and secondary pilot channels is based on at least one of data rate and payload size of the data channel. The power level of the primary pilot channel is maintained independent of at least one of data rate and payload size of the data channel. The power level of the secondary pilot channel may be adjusted based on at least one of data rate and payload size of the data channel.
Abstract:
PROBLEM TO BE SOLVED: To much more increase the efficiency of data sending in a multi-antenna communication system utilizing orthogonal frequency division multiplexing (OFDM). SOLUTION: A sending entity uses a different steering vector for a different sub-band in order to accomplish a steering diversity. Each steering vector demarcates, in short, forms beams for a pertinent sub-band. An arbitrary steering vector may be used for the steering diversity. The steering vector may be demarcated so as to change consecutively in place of an abrupt change in the entire sub-band. This may be accomplished by applying a consecutively changing phase shift ranging over the entire sub-band for each sending antenna. As one example, the phase shift may change ranging over the entire sub-band for each sending antenna, and each antenna may be correlated with a different phase slope. When the phase shift changing linearly is applied to a modulation symbol in a frequency area, the application may be accomplished by either retarding a corresponding time area sample, or circularly shifting it. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To maximize the use of available capacity in a communication system having a base station and a plurality of mobile stations. SOLUTION: A forward link supports a plurality of traffic streams which are sent through at least one common channel from the base station to the mobile stations, and are subject to the maximum power ceiling. A first output power level, which relates to the simultaneous transmission of a first set of traffic streams from the base station to the mobile station on the forward link, is initially determined. Next, the first output power level is compared to the maximum power ceiling. At least one time frame in the forward link having available capacity for transmitting a portion of at least one additional traffic stream is identified. The first set of traffic stream and the portion of at least one additional traffic stream are then transmitted simultaneously during at least one frame on the forward link. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method and system for enhancing the reliability of quality feedback in a wireless communications system. SOLUTION: The system and technique for communication involve transmitting a signal over a plurality of time periods, receiving a plurality of parameters each of which relates to the signal transmission during a different one of the time periods, filtering a first one of the parameters to generate a first filtered parameter, filtering a second one of the parameters as a function of the first filtered parameter to generate a second filtered parameter, and adjusting the signal as a function of the second filtered parameter. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method and apparatus for high rate packet data and low delay data transmissions. SOLUTION: The method is provided for combination transmission of packet data and low delay data in a wireless communication system (50). In one embodiment, a parallel signaling channel provides a message to receivers (56, 58, 60) indicating a target recipient of packet data. The message also identifies the transmission channels used for packet data transmissions. Each receiver may then selectively decode only packets where the message identifies the receiver as a target recipient. The data packets stored in a buffer are ignored if the target recipient is another mobile unit. In one embodiment, the message is sent concurrently with the data packet on a parallel channel. In one embodiment, the message is punctured into the high rate packet data transmission. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To accurately and efficiently transmit information in a communication system that optimizes use of available bandwidth. SOLUTION: The present invention relates to a method and apparatus for performing power control on power control commands transmitted on a forward link in a wireless communication system. The power level of power control bits on the forward link is adjusted in response to power commands received on the reverse link. The mobile station measures the power level of the adjusted power control bits to measure the quality of the forward link. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To obatain a method and a device for providing orthogonal spot beams, sectors and a picocells. SOLUTION: Transmission is made orthogonally by the use of different Walsh communication amount channels in orthogonal auxiliary pilots and adjacent areas. The pilot signal is covered by a 64-chip Walsh sequence 0. This invention provides an additional pilot signal by chaining the 64 chips (all 0 P) with the sequences (all 1 M). By this, pilot Walsh sequences PP and PM are used as 2 pilot signals. Pilot Walsh sequences PPPP, PMPM, PPMM and PMMP are used as 4 pilot signals. This invention is expanded so that any necessary number of the pilot Walsh sequence can be generated by substituting each bit in the 64 chips (all 0 P) that depend on the bit value and in the K-bit Walsh sequence that has the sequence (all 1 M). COPYRIGHT: (C)2009,JPO&INPIT