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1.发明申请METHODS AND APPARATUSES FOR DATA TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM 审中-公开无线通信系统中数据传输的方法与设备公开(公告)号：US20160056977A1
公开(公告)日：2016-02-25
申请号：US14780053
申请日：2013-03-29
申请人： NEC(CHINA) CO., LTD.
发明人： Gang WANG , Zhennian SUN , Ming LEI
CPC分类号： H04L25/0202 , H04L5/0048 , H04L25/0224 , H04W72/0446 , H04W72/1289
摘要： Embodiments of the present disclosure relate to downlink/uplink data transmission in a wireless communication system. In an embodiment of the present disclosure, there is provided a method for downlink data transmission in a wireless communication system which comprises transmitting an indication for a new-type reference signal to a user equipment, wherein the new-type reference signal has an identical location in frequency domain to a legacy reference signal; and transmitting the new-type reference signal and the legacy reference signal to the user equipment for using in channel estimation. In a case of more than one antenna port, the new-type reference signal may be designed to have a different location in time domain from a legacy reference signal to avoid interference to other antenna ports. With embodiments of the present disclosure, it is possible to perform a channel estimation based on both the legacy reference signal and the new-type reference signal to achieve a higher accuracy of channel estimation, and thus a UE with a low SNR may be also used in LTE networks.
摘要翻译： 本公开的实施例涉及无线通信系统中的下行链路/上行链路数据传输。 在本公开的实施例中，提供了一种用于无线通信系统中的下行链路数据传输的方法，其包括向用户设备发送新型参考信号的指示，其中新型参考信号具有相同的位置 在频域到遗留参考信号; 以及将新型参考信号和传统参考信号发送到用户设备以在信道估计中使用。 在多于一个天线端口的情况下，新型参考信号可被设计为在时域中具有与传统参考信号不同的位置，以避免对其它天线端口的干扰。 利用本公开的实施例，可以基于遗留参考信号和新型参考信号两者执行信道估计，以实现更高的信道估计精度，并且因此也可以使用具有低SNR的UE 在LTE网络中。
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2.发明申请METHOD AND APPARATUS FOR UPLINK DATA TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM 有权无线通信系统中上行数据传输的方法与装置公开(公告)号：US20160211960A1
公开(公告)日：2016-07-21
申请号：US14914099
申请日：2013-09-25
发明人： Gang WANG , Zhennian SUN , Ming LEI
CPC分类号： H04L5/0048 , H04L5/0051 , H04L5/0096 , H04L25/0202 , H04L25/0224
摘要： Embodiments of the present disclosure relate to uplink data transmission in a wireless communication system. In an embodiment of the present disclosure, there is provided a method for uplink data transmission in a wireless communication system. The method comprises transmitting an indication for new-type reference signals to a user equipment, wherein the new-type reference signals have a reduced density of reference signals in frequency domain, and resource elements not used by reference signals in symbols for the new-type reference signals are used for coverage enhancement; receiving the new-type reference signals; and performing channel estimation based on the new-type reference signals. With embodiments of the present disclosure, it may reduce the density of reference signals in frequency domain, which means the overhead will not be increased substantially and besides saved resource element may be used to implement the coverage enhancement. Thus, the number of retransmission of MTC UE in low SNR could be further reduced, which in turn results in the improvement of the system throughput. Accordingly, it is possible for a UE with a low SNR to be used in LTE networks.
摘要翻译： 本公开的实施例涉及无线通信系统中的上行链路数据传输。 在本公开的实施例中，提供了一种用于无线通信系统中的上行链路数据传输的方法。 该方法包括向用户设备发送用于新型参考信号的指示，其中新型参考信号在频域中具有降低的参考信号的密度，以及未被新类型的符号中的参考信号使用的资源元素 参考信号用于覆盖增强; 接收新型参考信号; 并且基于新型参考信号执行信道估计。 利用本公开的实施例，其可以降低频域中的参考信号的密度，这意味着开销将不会显着增加，并且除了保存的资源元素可以用于实现覆盖增强之外。 因此，可以进一步减少低SNR的MTC UE的重发次数，进而导致系统吞吐量的提高。 因此，可以在LTE网络中使用具有低SNR的UE。
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3.发明申请METHOD AND APPARATUS FOR DL/UL RESOURCE CONFIGURATION IN A TDD SYSTEM 审中-公开用于TDD系统中DL / UL资源配置的方法和装置公开(公告)号：US20150358836A1
公开(公告)日：2015-12-10
申请号：US14759338
申请日：2013-01-16
发明人： Dalin ZHU , Yu ZHANG , Zhennian SUN , Chaofeng LI , Gang WANG , Ming LEI
CPC分类号： H04W24/02 , H04W16/10 , H04W24/08 , H04W72/0446 , H04W84/045
摘要： Embodiments of the present disclosure relate to a method and apparatus for DL/UL resource configuration in a Time Division Duplex (TDD) system. The method may comprise: dividing a plurality of cells into disjoint clusters based on interference conditions among base stations of the plurality of cells; and performing, in each of at least one of the disjoint clusters, a cooperation DL/UL resource configuration on in-cluster cells included therein based on traffic conditions and performance metrics of the in-cluster cells, so as to determine respective DL/UL resource configurations for the in-cluster cells. With embodiments of the present disclosure, time domain resources may be utilized more efficiently and, additionally, it may be expected to achieve a better overall performance at a low cost.
摘要翻译： 本公开的实施例涉及在时分双工（TDD）系统中用于DL / UL资源配置的方法和装置。 该方法可以包括：基于多个小区中的基站之间的干扰条件将多个小区划分成不相交的聚类; 并且在至少一个所述不相交集群中的每一个中，基于所述集群内小区的业务条件和性能度量，在其中包括的集群中小区中执行协作DL / UL资源配置，以便确定相应的DL / UL 群集单元的资源配置。 利用本公开的实施例，可以更有效地利用时域资源，另外，可以预期以低成本实现更好的整体性能。
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4.发明申请公开(公告)号：US20150358115A1
公开(公告)日：2015-12-10
申请号：US14759952
申请日：2013-01-16
CPC分类号： H04L1/0045 , H04L5/0044 , H04L5/1469 , H04L43/0852 , H04W72/0446
摘要： Embodiments of the present disclosure provide methods and apparatus for performing Transmission Time Interval (TTI) bundling in a Time Division Duplex (TDD) system. One of the methods may comprise receiving a first TTI bundling packet containing a first part of a redundancy version of a transport block on a special subframe and a second TTI bundling packet containing a second part of the redundancy version on another special subframe; and combining the first TTI bundling packet and the second TTI bundling packet to obtain the redundancy version of the transport block in a complete form. With embodiments of the present disclosure, more configurations may be used in TTI bundling for enhancing coverage in the TDD system, and it may avoid additional interferences to legacy UEs.
摘要翻译： 本公开的实施例提供了用于在时分双工（TDD）系统中执行传输时间间隔（TTI）捆绑的方法和装置。 方法之一可以包括在特殊子帧上接收包含传输块的冗余版本的第一部分的第一TTI捆绑包和在另一个特殊子帧上包含冗余版本的第二部分的第二TTI捆绑包; 以及组合第一TTI捆绑包和第二TTI绑定包以完整形式获得传输块的冗余版本。 利用本公开的实施例，可以在TTI绑定中使用更多配置来增强TDD系统中的覆盖，并且其可以避免对传统UE的附加干扰。
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5.发明申请METHOD AND APPARATUS FOR COVERAGE ENHANCEMENT IN WIRELESS COMMUNICATION SYSTEM 审中-公开无线通信系统覆盖增强的方法与装置公开(公告)号：US20160248552A1
公开(公告)日：2016-08-25
申请号：US15022817
申请日：2013-09-18
发明人： Gang WANG , Zhennian SUN , Ming LEI
CPC分类号： H04L1/1861 , H04L5/0055 , H04W24/02
摘要： Embodiments of the disclosure provide methods and apparatuses for coverage enhancement in a wireless communication system. In a method according to embodiments of the present invention, a PHICH resource set including a plurality of PHICH resources is determined, and an ACK/NACK message is spread by using the plurality of PHICH resources, such that spreading results of the ACK/NACK message are sent to a UE in the plurality of PHICH resources.
摘要翻译： 本公开的实施例提供了用于无线通信系统中的覆盖增强的方法和装置。 在根据本发明的实施例的方法中，确定包括多个PHICH资源的PHICH资源集合，并且通过使用多个PHICH资源来扩展ACK / NACK消息，使得ACK / NACK消息的扩展结果 被发送到多个PHICH资源中的UE。
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公开(公告)号：US20200014563A1
公开(公告)日：2020-01-09
申请号：US16571791
申请日：2019-09-16
发明人： Gang WANG , Zhennian Sun , Ming Lei
摘要： Embodiments of the present disclosure relate to downlink/uplink data transmission in a wireless communication system. In an embodiment of the present disclosure, there is provided a method for downlink data transmission in a wireless communication system which comprises transmitting an indication for a new-type reference signal to a user equipment, wherein the new-type reference signal has an identical location in frequency domain to a legacy reference signal; and transmitting the new-type reference signal and the legacy reference signal to the user equipment for using in channel estimation. In a case of more than one antenna port, the new-type reference signal may be designed to have a different location in time domain from a legacy reference signal to avoid interference to other antenna ports. With embodiments of the present disclosure, it is possible to perform a channel estimation based on both the legacy reference signal and the new-type reference signal to achieve a higher accuracy of channel estimation, and thus a UE with a low SNR may be also used in LTE networks.
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