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    • 2. 发明申请
    • CHANNEL INTERLEAVER HAVING A CONSTELLATION-BASED BLOCK-WISE PERMUATION MODULE
    • 具有基于智能化的块式智能模块的信道交换
    • WO2010075804A1
    • 2010-07-08
    • PCT/CN2009/076334
    • 2009-12-31
    • MEDIATEK INC.WU, Ciou-PingLIAO, Pei-KaiCHANG, Yu-HaoCHEN, Yih-Shen
    • WU, Ciou-PingLIAO, Pei-KaiCHANG, Yu-HaoCHEN, Yih-Shen
    • H04B7/02
    • H04L1/0066H04L1/0042H04L1/0071H04L27/34
    • ABSTRACT A channel interleaver comprises a novel constellation-based permutation module. The channel interleaver first receives a plurality of sets of encoded bits generated from an FEC encoder. The encoded bits are distributed into multiple 5 subblocks and each subblock comprises a plurality of adjacent bits. A subblock interleaver interleaves each subblock and outputs a plurality of interleaved bits. The constellation-based permutation module rearranges the interleaved bits and outputs a plurality of rearranged bits. The rearranged bits are supplied to a symbol mapper such that a plurality of consecutively encoded bits in the same set 10 of the encoded bits generated from the FEC encoder is prevented to be mapped onto the same level of bit reliability of a modulation symbol. In addition, the plurality of adjacent bits of each subblock is also prevented to be mapped onto the same level of bit reliability to achieve constellation diversity and to improve decoding performance. 15 20
    • 摘要信道交织器包括基于星座的新的置换模块。 信道交织器首先接收从FEC编码器生成的多组编码比特。 编码的比特被分配到多个5个子块中,并且每个子块包括多个相邻的比特。 子块交织器交织每个子块并输出多个交织比特。 基于星座的置换模块重新排列交织的比特并输出多个重新排列的比特。 重新排列的比特被提供给符号映射器,使得从FEC编码器生成的编码比特的相同组10中的多个连续编码比特被阻止被映射到调制符号的相同级别的比特可靠性。 此外,还防止了每个子块的多个相邻位被映射到相同级别的比特可靠性以实现星座分集并提高解码性能。 15 20
    • 4. 发明申请
    • NETWORK-BASED POSITIONING MECHANISM AND REFERENCE SIGNAL DESIGN IN OFDMA SYSTEMS
    • 基于网络的POS系统的定位机制和参考信号设计
    • WO2011060720A1
    • 2011-05-26
    • PCT/CN2010/078827
    • 2010-11-17
    • MEDIATEK INC.HWANG, Chien-HwaLIAO, Pei-KaiCHEN, Yih-Shen
    • HWANG, Chien-HwaLIAO, Pei-KaiCHEN, Yih-Shen
    • H04W64/00
    • H04W64/00
    • A network-based positioning mechanism is proposed. A serving BS first allocates radio resource to a target UE for network-based positioning in a wireless communication system. The target UE then transmits a positioning reference signal (PRS) to the serving BS and a plurality of cooperative BSs at the same time instant. All the cooperative BSs then conduct PRS detection and TOA measurements. Finally, the serving BS conducts positioning estimation based on the TOA measurement results. In one novel aspect, only one PRS transmission is required in one positioning opportunity for one positioning result. Candidates of PRS are selected with respect to different scenarios and allocated in a PRS resource region. Multiple positioning opportunities and multiple reference signals may be multiplexed over time, frequency or code domain in the PRS resource region. In one embodiment, the PRS is configured in such a way that both radio resource consumption and interference is minimized.
    • 提出了一种基于网络的定位机制。 服务BS首先向无线通信系统中的基于用于基于网络的定位的目标UE分配无线电资源。 目标UE然后在同一时刻向服务BS和多个协作BS发送定位参考信号(PRS)。 所有合作BS随后进行PRS检测和TOA测量。 最后,服务BS基于TOA测量结果进行定位估计。 在一个新颖的方面,在一个定位结果的一个定位机会中仅需要一个PRS传输。 针对不同场景选择PRS的候选者,并分配在PRS资源区域中。 多个定位机会和多个参考信号可以在PRS资源区域中随时间,频率或代码域被复用。 在一个实施例中,PRS被配置为使得无线电资源消耗和干扰都被最小化。
    • 8. 发明申请
    • MEASUREMENT CONFIGURATION IN MULTI-CARRIER OFDMA WIRELESS COMMUNICATION SYSTEMS
    • 多载波无线通信系统中的测量配置
    • WO2011157224A1
    • 2011-12-22
    • PCT/CN2011/075878
    • 2011-06-17
    • MEDIATEK INC.CHOU, Chao-ChinCHEN, Yih-Shen
    • CHOU, Chao-ChinCHEN, Yih-Shen
    • H04W24/00
    • H04W48/16H04W84/045
    • Various measurement configurations and s-Measure mechanism in multi-carrier OFDMA systems are provided. In one embodiment, a user equipment (UE) measures a first reference signal received power (RSRP) level in a primary serving cell (Pcell) over a primary component carrier (PCC). The UE also measures a second RSRP level in a secondary serving cell (Scell) over a secondary component carrier (SCC). The UE compares the first RSRP level with a first s-Measure value and compares the second RSRP level with a second s-Measure value. The UE then enables s- Measure mechanism and stops measuring neighbor cells over the PCC if the first RSRP level is higher than the first s-Measure value. The UE also enables s-Measure mechanism and stops measuring neighbor cells over the SCC if the second RSRP level is higher than the second s- Measure value. By having independent s-Measure mechanism and independent s-Measure value, maximum flexibility is achieved.
    • 提供了多载波OFDMA系统中的各种测量配置和s-Measure机制。 在一个实施例中,用户设备(UE)通过主分量载波(PCC)测量主服务小区(Pcell)中的第一参考信号接收功率(RSRP)电平。 UE还通过辅助分量载波(SCC)测量辅助服务小区(Scell)中的第二RSRP级别。 UE将第一RSRP级别与第一s-Measure值进行比较,并将第二RSRP级别与第二s-Measure值进行比较。 然后,如果第一RSRP级别高于第一s-Measure值,则UE然后启用s-测量机制并停止在PCC上测量相邻小区。 如果第二RSRP电平高于第二s-Measure值,则UE还启用s-Measure机制并停止通过SCC测量相邻小区。 通过独立的s-Measure机制和独立的s-Measure值,实现了最大的灵活性。
    • 9. 发明申请
    • PREAMBLE PARTITION AND CELL IDENTIFICATION PROCEDURE IN WIRELESS COMMUNICATION SYSTEMS
    • 无线通信系统中的前置分区和小区识别程序
    • WO2011003350A1
    • 2011-01-13
    • PCT/CN2010/075026
    • 2010-07-07
    • MEDIATEK INC.CHANG, Yu-HaoCHEN, Yih-ShenLIAO, Pei-Kai
    • CHANG, Yu-HaoCHEN, Yih-ShenLIAO, Pei-Kai
    • H04W48/10H04W48/20
    • H04W48/20
    • Two preamble partition schemes are provided for flexible network deployment and efficient utilization of limited cell identification resources in a wireless network. In a soft partition scheme, the entire preamble sequences are partitioned into several configurable non-overlapping subsets, and each subset is associated with a corresponding cell type. In a hybrid partition scheme, a combination of fixed and configurable subsets is used for preamble partition. The partitioning information is carried in a broadcasting channel broadcasted from base stations to mobile stations. In one embodiment, after a mobile station performs scanning and synchronization with a first base station, it derives the cell type of the first base station from cell identification and partitioning information. The mobile station completes ranging and network entry with the first base station if the cell type is preferred, and starts to perform scanning and synchronization with a second base station if the cell type is non-preferred.
    • 提供两个前导码分区方案用于无线网络中的有限小区标识资源的灵活网络部署和有效利用。 在软分区方案中,将整个前导码序列划分成若干可配置的非重叠子集,并且每个子集与相应的小区类型相关联。 在混合分区方案中,固定和可配置子集的组合用于前导码分区。 分区信息在从基站广播的广播信道中携带到移动台。 在一个实施例中,在移动台与第一基站执行扫描和同步之后,它从小区识别和分区信息中导出第一基站的小区类型。 如果小区类型是优选的,则移动台完成与第一基站的测距和网络入口,并且如果小区类型是不优选的,则开始执行与第二基站的扫描和同步。
    • 10. 发明申请
    • METHOD FOR SMALL CELL DISCOVERY IN HETEROGENEOUS NETWORK
    • 异构网络中小细胞发现的方法
    • WO2013020522A1
    • 2013-02-14
    • PCT/CN2012/079977
    • 2012-08-10
    • MEDIATEK INC.CHEN, Yih-ShenJOHANSSON, Per Johan Mikael
    • CHEN, Yih-ShenJOHANSSON, Per Johan Mikael
    • H04W48/16
    • H04W36/30H04W36/0083H04W84/045Y02D70/1262Y02D70/1264Y02D70/164
    • Methods for small cell discovery in heterogeneous networks are proposed for efficient cell search and better power saving. In one novel aspect, a user equipment (UE) measures small cells only when the UE enters into the vicinity of the small cells. For example, the UE detects the proximity of small cells and reports proximity indication information to the network. Based on the vicinity indication, the network provides suitable measurement configuration for small cells. In a second novel aspect, the UE performs guided search for small cell discovery. In a third novel aspect, the UE increases search rate for small cells when it is in the vicinity of small cells, and decreases search rate for small cells when it is not in the vicinity of small cells. The detection may be based on location information provided by the network or based on vicinity detection information autonomously stored by the UE.
    • 提出了异构网络中小细胞发现的方法,用于有效的小区搜索和更好的省电。 在一个新颖的方面,用户设备(UE)仅在UE进入小小区附近时测量小小区。 例如,UE检测小单元的接近度并将接近指示信息报告给网络。 基于附近的指示,网络为小单元提供适当的测量配置。 在第二个新颖的方面,UE执行小型小区发现的引导搜索。 在第三个新颖的方面,当小细胞处于小细胞附近时,UE增加小细胞的搜索率,并且当小细胞不在小细胞附近时,小单元的搜索率降低。 检测可以基于由网络提供的位置信息或者基于由UE自主存储的邻域检测信息。