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91. 发明申请

US20100195514A1 METHOD AND SYSTEM FOR OPERATING A MULTI-USER MULTIPLE-INPUT MULTIPLE OUTPUT (MU-MIMO) WIRELESS COMMUNICATIONS SYSTEM 有权
标题翻译：用于多用户多输入多输出（MU-MIMO）无线通信系统的方法和系统
公开(公告)号：US20100195514A1
公开(公告)日：2010-08-05
申请号：US12452067
申请日：2008-06-13
申请人： Kai Xu , Chen Zixiong , Ni Ma , Kai Sun , Bei Zhou , Ying Wang , Ping Zhang
发明人： Kai Xu , Chen Zixiong , Ni Ma , Kai Sun , Bei Zhou , Ying Wang , Ping Zhang
IPC分类号： H04L12/26
CPC分类号： H04B17/0062 , H04B7/0615 , H04B17/21 , H04L1/0026 , H04L1/0625 , H04L5/006
摘要： A technique for operating a wireless communications system that supports multi-user multiple-input multiple-output (MU-MIMO) communications between a base station and multiple mobile stations involves generating inter-cell interference information at the mobile stations and providing the inter-cell interference information to the base station. The base station uses the inter-cell interference information to calculate channel quality indicators (CQIs) and then makes scheduling decisions in response to the CQIs. Data is transmitted from the base station to the mobile stations according to the scheduling decisions.
摘要翻译：一种用于操作支持基站与多个移动站之间的多用户多输入多输出（MU-MIMO）通信的无线通信系统的技术涉及在移动站处产生小区间干扰信息并提供小区间干扰信息给基站。基站使用小区间干扰信息来计算信道质量指示符（CQI），然后响应于CQI进行调度决定。根据调度决定，从基站向移动台发送数据。

92. 外观设计

USD557189S1 Motorcycle front cover 有权
标题翻译：摩托车前盖
公开(公告)号：USD557189S1
公开(公告)日：2007-12-11
申请号：US29261471
申请日：2006-06-13
申请人： Kai Xu
设计人： Kai Xu

93. 发明申请

US20070121505A1 Providing Proportionally Fair Bandwidth Allocation in Communication Systems 有权
标题翻译：在通信系统中提供比例公平的带宽分配
公开(公告)号：US20070121505A1
公开(公告)日：2007-05-31
申请号：US11563740
申请日：2006-11-28
申请人： Nirwan Ansari , Gang Cheng , Kai Xu
发明人： Nirwan Ansari , Gang Cheng , Kai Xu
IPC分类号： H04L12/26
CPC分类号： H04L47/10 , H04L47/12 , H04L47/2408 , H04L47/32
摘要： Sharing a resource may include the use of label values associated with information units presented to the resource. The label values may be determined based on, for example, arrival rates and/or committed flow rates. Criteria may be applied to label values to determine if the associated information units may be dropped.
摘要翻译：共享资源可以包括使用与向资源呈现的信息单元相关联的标签值。标签值可以基于例如到达速率和/或承诺的流速来确定。可以将标准应用于标签值以确定相关联的信息单元是否可能被丢弃。

94. 发明申请

US20070109025A1 Resonant gate drive circuit with centre-tapped transformer 有权
标题翻译：具有中心抽头变压器的谐振栅极驱动电路
公开(公告)号：US20070109025A1
公开(公告)日：2007-05-17
申请号：US11593129
申请日：2006-11-06
申请人： Yan-Fei Liu , Kai Xu
发明人： Yan-Fei Liu , Kai Xu
IPC分类号： H03K5/22 , H03K17/72
CPC分类号： H03K17/04123 , H03K17/693 , H03K2217/0036
摘要： This invention relates to a resonant gate drive circuit for a power switching device, such as a MOSFET, that uses a centre-tapped transformer to increase the driving gate voltage approximately twice as high as the supply voltage. The gate capacitance of the power switching device is charged and discharged by a constant current source, which increases the switching transition speed of the power switch. The circuit is suitable for driving a pair of low side switches with 50% duty cycle or less, such as in a variable frequency resonant converter, push-pull converter, or the like.
摘要翻译：本发明涉及一种用于诸如MOSFET的功率开关器件的谐振栅极驱动电路，其使用中心抽头变压器来增加大约是电源电压两倍的驱动栅极电压。电源开关器件的栅极电容由恒流源充电和放电，这增加了电源开关的开关转换速度。该电路适用于驱动具有50％占空比或更小的一对低侧开关，例如在可变频率谐振转换器，推挽转换器等中。

95. 发明申请

US20070048169A1 Method of making powder metal parts by surface densification 审中-公开
标题翻译：通过表面致密化制造粉末金属部件的方法
公开(公告)号：US20070048169A1
公开(公告)日：2007-03-01
申请号：US11211220
申请日：2005-08-25
申请人： Ryan Sun , Kai Xu , Sean Kuplen , Scott Hicklen
发明人： Ryan Sun , Kai Xu , Sean Kuplen , Scott Hicklen
IPC分类号： B22F3/24
CPC分类号： C22C33/0264 , B22F2998/10 , B22F3/02 , B22F3/10 , B22F2003/248 , B22F3/164 , B22F2003/241 , B22F2003/247
摘要： A method of producing parts from powdered metal having a first step of providing a powder, which is compressed at a pressure of 25 to 65 tsi to provide a green compact. The compact is then sintered at 2000° F. to 2400° F. for 20 to 60 minutes and cooled. After the compact has been cooled, the density of the compact is increased to greater than 7.4 g/cc. The compact is austenitized in an atmosphere of gas containing propane and a carbon potential of 0.8%. In one embodiment, the gas also contains ammonia. The compact is heated in the atmosphere at a temperature of 1600° F. for 40 minutes. Immediately following the heating, the compact is quenched in oil a temperature between 120° F. and 150° F. for 10 to 15 minutes. Lastly the compact is tempered at a temperature between 300° F. and 1000° F. for 30 to 90 minutes.
摘要翻译：一种从粉末状金属制造零件的方法，该方法具有第一步，提供粉末，其压力为25至65tsi，以提供生坯。然后将该压块在2000°F下烧结至2400°F，持续20至60分钟并冷却。在压块已经冷却之后，压块的密度增加到大于7.4g / cc。该压实体在含有丙烷的气体和0.8％的碳势的气氛中奥氏体化。在一个实施方案中，气体还含有氨。将该压块在大气中在1600°F的温度下加热40分钟。在加热之后，紧凑件在油中在120°F和150°F之间的温度下淬火10至15分钟。最后，将压坯在300°F至1000°F之间的温度下回火30至90分钟。

96. 发明申请

US20060131775A1 Split die and method for production of compacted powder metal parts 有权
标题翻译：分体模具和生产压实粉末金属零件的方法
公开(公告)号：US20060131775A1
公开(公告)日：2006-06-22
申请号：US11017013
申请日：2004-12-20
申请人： Edwin Hicklen , Sean Kuplen , Kai Xu , Ryan Sun
发明人： Edwin Hicklen , Sean Kuplen , Kai Xu , Ryan Sun
IPC分类号： B22F3/03
CPC分类号： B22F3/03
摘要： A device to compact parts out of powder material including a top die and a bottom die movable with respect to each other from an open position to a closed position, at least one punch associated with each of said dies for relative movement between the die and associated punch, said bottom die and bottom punch movable to positions defining a cavity substantially within said top die for receiving powder therein, said bottom punch and said top and bottom dies being relatively movable to draw powder down into a portion of said cavity adjacent the bottom die that is formed due to said relative movement, said top and bottom punches being movable toward each other to compact the powder and form the part, said top and bottom dies being separable to eject the part. Relative movement of the top and bottom die and bottom punch may take place during filling of the cavity with powder. Alternatively, relative movement may take place after the completion of filling the cavity adjacent the top die with sufficient powder to fill the part.
摘要翻译：一种用于从粉末材料压实部件的装置，包括可以从打开位置到关闭位置相对于彼此移动的顶模和底模，至少一个与所述模具中的每一个相关联的冲头，用于模具和相关联的相对运动之间的相对运动所述底模和底冲头可移动到限定基本上在所述顶模内的空腔的位置，用于在其中接收粉末，所述底冲头和所述顶模和下模具相对移动以将粉末向下拉入与所述底模相邻的所述腔的一部分由于所述相对运动而形成，所述顶部和底部冲头可相对于彼此移动以压实粉末并形成所述部件，所述顶部和底部模具可分离以弹出所述部件。顶部和底部模具和底部冲头的相对运动可以在用粉末填充空腔期间发生。或者，相对运动可以在用足够的粉末填充部分附近的顶部模具填充完成之后发生。

97. 外观设计

USD960669S1 Hair scissors 有权
公开(公告)号：USD960669S1
公开(公告)日：2022-08-16
申请号：US29753078
申请日：2020-09-30
申请人： Kai Xu
设计人： Kai Xu

98. 发明授权

US11330443B2 HARQ feedback for configured grant 有权
公开(公告)号：US11330443B2
公开(公告)日：2022-05-10
申请号：US16737128
申请日：2020-01-08
申请人： Alireza Babaei , Esmael Dinan , Hua Zhou , Hyoungsuk Jeon , Ali Cirik , Kyungmin Park , Kai Xu , Nazanin Rastegardoost
发明人： Alireza Babaei , Esmael Dinan , Hua Zhou , Hyoungsuk Jeon , Ali Cirik , Kyungmin Park , Kai Xu , Nazanin Rastegardoost
IPC分类号： H04W4/00 , H04W16/14 , H04W72/14 , H04W72/04 , H04W76/27 , H04L1/18 , H04W74/08 , H04L5/00
摘要： A wireless device receives configuration parameters of one or more configured grants of an unlicensed cell. The wireless device transmits, based on a configured grant of the one or more configured grants, one or more code block groups of a transport block and a code block group transmission information. The code block group transmission information indicates a presence of the one or more code block groups for the transport block. The wireless device receives a downlink control information comprising a first field and a second field. The first field indicates that the base station received the code block group transmission information. The second field indicates hybrid automatic repeat request feedbacks for the one or more code block groups.

99. 发明授权

US11259293B2 Two-stage preamble transmission 有权
公开(公告)号：US11259293B2
公开(公告)日：2022-02-22
申请号：US16739716
申请日：2020-01-10
申请人： Nazanin Rastegardoost , Esmael Dinan , Hyoungsuk Jeon , Hua Zhou , Kai Xu
发明人： Nazanin Rastegardoost , Esmael Dinan , Hyoungsuk Jeon , Hua Zhou , Kai Xu
IPC分类号： H04W72/04 , H04W72/08 , H04W74/08 , H04L5/00
摘要： A wireless device receives one or more messages from a base station. The one or more messages indicate one or more monitoring occasions for a DCI. A first downlink reference signal is selected from one or more downlink reference signals based on a received signal strength of the first downlink reference signal being above a value. A radio network identifier is determined, based on at least one index indicating a time resource in which the first downlink reference signal is received. The DCI addressed to the radio network identifier is received. The DCI indicates one or more random access occasions (ROs). A preamble is transmitted, via one of the one or more ROs, in response to receiving the DCI.

100. 发明授权

US11252754B2 Configured grant for unlicensed cells 有权
公开(公告)号：US11252754B2
公开(公告)日：2022-02-15
申请号：US16737439
申请日：2020-01-08
申请人： Alireza Babaei , Esmael Dinan , Hua Zhou , Hyoungsuk Jeon , Ali Cirik , Kyungmin Park , Kai Xu , Nazanin Rastegardoost
发明人： Alireza Babaei , Esmael Dinan , Hua Zhou , Hyoungsuk Jeon , Ali Cirik , Kyungmin Park , Kai Xu , Nazanin Rastegardoost
IPC分类号： H04W72/12 , H04L1/18 , H04W28/04 , H04L1/16 , H04L5/00 , H04W16/14
摘要： A wireless device receives one or more downlink control information. The one or more downlink control information indicate negative acknowledgements. The negative acknowledgements are for one or more first code block groups of a first transport block corresponding to a first hybrid automatic repeat request (HARQ) process and one or more second code block groups of a second transport block corresponding to a second HARQ process. The wireless device determines that a size of a first configured grant is sufficient to retransmit the one or more first code block groups and the one or more second code block groups. Based on the determining, the wireless device retransmits, via radio resources of the first configured grant, the one or more first code block groups and the one or more second code block groups.

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