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    • 31. 发明申请
    • CODEWORD LEVEL SCRAMBLING FOR MIMO TRANSMISSION
    • 用于MIMO传输的码字级扰码
    • WO2008058109A3
    • 2008-08-14
    • PCT/US2007083730
    • 2007-11-06
    • QUALCOMM INCMALLADI DURGA PRASADMONTOJO JUAN
    • MALLADI DURGA PRASADMONTOJO JUAN
    • H04L25/03H04B7/02
    • H04L1/0045H04L1/0041H04L1/0067H04L1/0071H04L1/06H04L5/0026H04L25/03866
    • Techniques for performing codeword level scrambling for a MIMO transmission are described. A transmitter station may perform channel encoding for multiple data streams being sent simultaneously for a MIMO transmission. The channel encoding may include forward error correction (FEC) encoding and/or rate matching. The transmitter station may perform scrambling for the multiple data streams with different scrambling codes after the channel encoding. The transmitter station may also perform channel interleaving, symbol mapping, and spatial processing for the multiple data streams after the channel encoding. A receiver station may receive the MIMO transmission, perform descrambling for the multiple data streams with the different scrambling codes, and then perform channel decoding for the multiple data streams. The scrambling may allow the receiver station to isolate each data stream by performing the complementary descrambling and to obtain randomized interference from the remaining data stream(s), which may improve performance.
    • 描述了用于执行MIMO传输的码字级加扰的技术。 发射机站可以对用于MIMO传输的同时发送的多个数据流执行信道编码。 信道编码可以包括前向纠错(FEC)编码和/或速率匹配。 发送站可以在信道编码后对具有不同扰码的多个数据流进行加扰。 发射机站还可以在信道编码之后对多个数据流执行信道交织,符号映射和空间处理。 接收站可以接收MIMO传输,对具有不同扰码的多个数据流进行解扰,然后对多个数据流进行信道解码。 加扰可以允许接收机站通过执行互补解扰来隔离每个数据流并且从剩余的数据流获得随机干扰,这可以提高性能。
    • 33. 发明申请
    • METHOD AND APPARATUS FOR ENHANCED PAGING
    • 用于增强寻呼的方法和装置
    • WO2007127945A3
    • 2008-03-20
    • PCT/US2007067682
    • 2007-04-27
    • QUALCOMM INCMONTOJO JUANMALLADI DURGA PRASAD
    • MONTOJO JUANMALLADI DURGA PRASAD
    • H04W68/00H04W68/02
    • H04L5/0091H04L5/0007H04L5/0053H04L5/006H04L5/0064H04L25/03866H04W68/025
    • Techniques for paging user equipments (UEs) in a wireless communication system are described. In one aspect, a cell sends a paging indicator to a UE, monitors for an acknowledgement from the UE, and sends a page message to the UE if an acknowledgement is received from the UE. The cell may receive channel quality information from the UE and may send the page message with link adaptation and/or HARQ to improve performance. In another aspect, a cell sends a paging indicator on a shared control channel to a UE and sends a page message on a shared data channel to the UE. The paging indicator and page message may be sent from multiple cells to the UE. Alternatively, the paging indicator may be sent from multiple cells to the UE, and the page message may be sent from a single cell to the UE.
    • 描述了无线通信系统中的寻呼用户设备(UE)的技术。 一方面,小区向UE发送寻呼指示符,监视来自UE的确认,并且如果从UE接收到确认,则向UE发送寻呼消息。 小区可以从UE接收信道质量信息,并且可以发送具有链路适配和/或HARQ的寻呼消息以提高性能。 另一方面,小区在共享控制信道上发送寻呼指示符给UE,并在共享数据信道上向UE发送寻呼消息。 寻呼指示符和寻呼消息可以从多个小区发送到UE。 或者,寻呼指示符可以从多个小区发送到UE,并且寻呼消息可以从单个小区发送到UE。
    • 38. 发明申请
    • METHODS AND SYSTEMS FOR PDCCH BLIND DECODING IN MOBILE COMMUNICATIONS
    • 用于移动通信中的PDCCH盲解码的方法和系统
    • WO2009058905A3
    • 2009-11-26
    • PCT/US2008081641
    • 2008-10-29
    • QUALCOMM INCMALLADI DURGA PRASADMONTOJO JUANSARKAR SANDIP
    • MALLADI DURGA PRASADMONTOJO JUANSARKAR SANDIP
    • H04L1/00
    • H04L1/0038H04W72/042
    • Various methods and systems for efficiently performing the blind decoding of downlink signals are described. Several forms of arranging possible CCE combinations are examined and investigated. Based on PDCCH size estimation/information, CCE concatenations that are most likely (of limited sets) can be arrived at. Tree-based concatenations are also devised using largest CCE ordering to align smaller CCE sizes to similar boundaries. By such ordering, the search space for all possible CCE ordering and sizes can be reduced to an efficient tree. Set mapping between possible CCE/REs are also described using a first set to secondary and tertiary sets. Various other o'rdering and sorting schemes are also detailed that enable a blind decode of a PDCCH channel to be efficiently performed.
    • 描述了用于有效执行下行链路信号的盲解码的各种方法和系统。 对可能的CCE组合进行排列的几种形式进行了检查和调查。 基于PDCCH大小估计/信息,可以得出最有可能(有限集合)的CCE级联。 还设计了基于树的级联,使用最大的CCE排序来将较小的CCE大小对准到类似的边界。 通过这样的排序,所有可能的CCE排序和大小的搜索空间可以减少到一个有效的树。 也可以使用第一组到第二组和第三组来描述可能的CCE / RE之间的映射。 还详细描述了能够有效执行PDCCH信道的盲解码的各种其它的输入和排序方案。
    • 40. 发明申请
    • CIRCULAR BUFFER BASED RATE MATCHING
    • 基于循环缓冲器的速率匹配
    • WO2008119048A3
    • 2009-01-15
    • PCT/US2008058500
    • 2008-03-27
    • QUALCOMM INCMALLADI DURGA PRASADMONTOJO JUANWEI YONGBIN
    • MALLADI DURGA PRASADMONTOJO JUANWEI YONGBIN
    • H04L1/00
    • H04L1/0013H04L1/0066H04L1/0067H04L1/0071H04L1/1812
    • Systems and methodologies are described that facilitate employing circular buffer based rate matching. Encoded block(s) that include systematic, parity 1, and parity 2 bits can be generated using turbo code. Bit type can be identified to separate bits into distinct groups. Systematic bits can be interleaved together to generate a randomized sequence of systematic bits, parity 1 bits can be interleaved together to yield a randomized sequence of parity 1 bits, and parity 2 bits can be interleaved together to output a randomized sequence of parity 2 bits. The randomized sequences of parity 1 bits and parity 2 bits can be interlaced together in an alternating manner. The randomized sequence of systematic bits can be inserted into a circular buffer, and upon inserting the entire sequence, the interlaced parity bits can be inserted into the circular buffer (e.g., until reaching capacity). Bits inserted into the circular buffer are transmitted.
    • 描述了便于采用基于循环缓冲器的速率匹配的系统和方法。 可以使用turbo码生成包括系统,奇偶校验1和奇偶校验位2的编码块。 可以识别位类型以将位分成不同的组。 系统比特可以交织在一起以产生随机化的系统比特序列,奇偶校验1比特可以交织在一起以产生奇偶校验1比特的随机化序列,并且奇偶校验2比特可以交织在一起以输出奇偶校验2比特的随机化序列。 奇偶校验1比特和奇偶校验2比特的随机序列可以以交替方式交织在一起。 系统比特的随机序列可以被插入到循环缓冲器中,并且在插入整个序列时,可将隔行扫描奇偶校验位插入到循环缓冲器中(例如直到达到容量)。 插入到循环缓冲器中的位被传送。