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    • 46. 发明申请
    • METHOD AND APPARATUS FOR COMPRESSED MODE COMMUNICATIONS OVER A RADIO INTERFACE
    • 用于无线接口压缩模式通信的方法和装置
    • WO01024566A1
    • 2001-04-05
    • PCT/SE2000/001794
    • 2000-09-15
    • H04J13/00H04J13/20H04L1/00H04L1/08H04W28/06H04W84/04H04Q7/38H04B1/707
    • H04L1/0068H04B2201/70702H04J13/0044H04J13/20H04L1/0039H04L1/0067H04L1/0072H04W36/0083
    • A system and corresponding method for utilizing Code Division Multiple Access (CDMA) techniques in compressed modes. In certain embodiments, radio frames on an uplink data channel are formed and transmitted to include at least one transmission gap (TG) therein in a compressed mode. This may be achieved by reducing the spreading factor (e.g., by a factor of two). In combination with reducing the spreading factor, the TG may be tailored or adjusted to its desired length (TGL) by using bit repetition (or reduction of puncturing). This enables the TG length to be tailored to a desired length, without having to increase output power more than necessary. In other embodiments of this invention, frames on an uplink control channel are formed or formatted so as to repeat format indicator (e.g., TFCI) bits therein in compressed mode. Optionally, format indicator bit(s) immediately or directly following the TG may be repeated later in the frame since these bits may sometimes suffer from slightly worse power control than other TFCI bits in the frame. Moreover, any embodiment of this invention is also applicable to downlink channel communications.
    • 一种在压缩模式下利用码分多址(CDMA)技术的系统和相应方法。 在某些实施例中,上行链路数据信道上的无线电帧被形成并被发送以在压缩模式中包括其中的至少一个传输间隙(TG)。 这可以通过减小扩展因子(例如,通过因子二)来实现。 结合减少扩展因子,可以通过使用位重复(或减少穿孔)来将TG定制或调整到其期望长度(TGL)。 这使得TG长度被调整到期望的长度,而不必增加超过必要的输出功率。 在本发明的其他实施例中,形成或格式化上行链路控制信道上的帧,以便以压缩模式重复格式指示符(例如,TFCI)比特。 可选地,在帧后面的格式指示符位可以稍后重复,因为这些位有时可能遭受与帧中的其它TFCI位稍差的功率控制。 此外,本发明的任何实施例也适用于下行链路信道通信。
    • 47. 发明申请
    • RATE DETECTION IN DIRECT SEQUENCE CODE DIVISION MULTIPLE ACCESS SYSTEMS
    • 直接序列码分多址访问系统中的速率检测
    • WO00024151A1
    • 2000-04-27
    • PCT/EP1999/007922
    • 1999-10-15
    • H04L1/00H04L1/08
    • H04L1/0046H04L1/0054H04L1/0067H04L1/08
    • A method of rate detection at a receiving end of a code division multiple access (CDMA) system, in which system the effective data rate is variably selected at the transmitting end from an applicable rate set including a full rate and lower rates, each lower rate being the full rate divided by a different integer, and encoded symbols are repeated for the lower rates to maintain a constant apparent symbol transmission rate, includes the formation of scaled correlations between data entering a Viterbi decoder, after any required de-repetition, and re-encoded data at each of the possible data rates in the applicable rate set. Rate decision logic sequentially considers the full and lower candidate data rates in descending order, choosing the considered candidate data rate to be the actual data rate if certain conditions are met. A first of the conditions is whether the scaled correlation for the considered data rate plus a predetermined biasing threshold associated therewith is greater than or equal to the largest of the scaled correlations for the other data rates, and a second condition depends on whether CRC checking is available for the considered data rate. If CRC checking is available for the considered data rate, the second condition is satisfied if CRC checking has not failed. If CRC checking is not available, it is determined as the second condition whether the scaled correlation for the considered data rate is equal to or greater than a further predetermined threshold associated therewith.
    • 一种在码分多址(CDMA)系统的接收端进行速率检测的方法,其中系统在发送端从包括全速率和较低速率的适用速率集可变地选择有效数据速率,每个较低的速率 以全速率除以不同的整数,并且对于较低速率重复编码的符号以维持恒定的表观符号传输速率,包括在任何所需的重复之后进入维特比解码器的数据之间的缩放相关性的形成,并且re 在适用的速率集中的每个可能的数据速率的编码数据。 速率决策逻辑按顺序考虑全部和较低的候选数据速率,如果满足某些条件,则将所考虑的候选数据速率选择为实际数据速率。 第一个条件是所考虑的数据速率加上与其相关联的预定偏置阈值的缩放相关性是否大于或等于其他数据速率的缩放相关的最大值,第二个条件取决于CRC校验是否为 可用于考虑的数据速率。 如果CRC检查可用于所考虑的数据速率,则如果CRC校验没有失败,则满足第二条件。 如果CRC校验不可用,则确定所考虑的数据速率的缩放相关性是否等于或大于与其相关联的另一预定阈值的第二条件。
    • 48. 发明申请
    • RATE MATCHING USING LOW-DENSITY PARITY-CHECK CODES
    • 速率匹配使用低密度奇偶校验码
    • WO2017131813A1
    • 2017-08-03
    • PCT/US2016/041366
    • 2016-07-07
    • INTEL IP CORPORATION
    • NIMBALKER, AjitXU, Tao
    • H04L1/00H04L1/18
    • H04L1/0067H04L1/0057H04L1/1819H04L1/1822H04L1/1845
    • Technology for a transmitter operable to perform data transmissions using low density parity check (LDPC) codes is disclosed. The transmitter can determine soft buffer information (Nsoft) for a receiver. The transmitter can determine a soft buffer partition per HARQ process (NIR) for the UE. The transmitter can obtain, for a transport block, a number of code block segments (C). The transmitter can select a shift size value (z). The transmitter can determine an amount of soft buffer available for the code block segments (Ncb) based on NIR, C, and z. The transmitter can encode the code block segments based on an LDPC coding scheme to obtain encoded parity bits. The transmitter can select a subset of the encoded parity bits based on the determined amount of soft buffer associated with the code block segments.
    • 公开了可操作用于使用低密度奇偶校验(LDPC)码来执行数据传输的发射机的技术。 发射机可以为接收机确定软缓冲区信息(Nsoft)。 发射机可以为UE确定每个HARQ过程(NIR)的软缓冲分区。 对于传输块,发射机可以获得多个码块段(C)。 变送器可以选择一个换档尺寸值(z)。 发射机可以基于NIR,C和z来确定可用于码块段(Ncb)的软缓冲器的量。 发射机可以基于LDPC编码方案对码块段进行编码以获得编码的奇偶比特。 发射机可以基于确定的与码块段相关联的软缓冲器的量来选择编码奇偶校验位的子集。