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    • 1. 发明申请
    • UPLINK POWER CONTROL FOR MU-MIMO
    • 用于MU-MIMO的上行电源控制
    • WO2013091148A1
    • 2013-06-27
    • PCT/CN2011/002171
    • 2011-12-23
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)FAN, RuiLU, QianxiZHAO, Zhenshan
    • FAN, RuiLU, QianxiZHAO, Zhenshan
    • H04W52/00
    • H04W52/146H04B7/0452H04W24/08H04W52/241H04W52/267H04W52/346H04W52/42
    • A method (310) of power control for multi-user multi-input multi-output (MU-MIMO) transmissions between a pair of mobile terminals and a radio base station is provided. The method comprises determining (312) signal-to- interference-noise ratios (SINRs) for the radio channels between the mobile terminals and the radio base station, determining (312) a channel orthogonality between the radio channels, and jointly determining (315), based on the SINRs and the channel orthogonality, power adjustment values for the mobile terminals. The present invention makes use of an understanding that the system gain resulting from MU-MIMO transmissions may be improved by optimizing the transmission power of the co-scheduled mobile terminals. For instance, the power adjustment values may be determined so as to attain certain SINR targets. Alternatively, the power adjustment values may be determined so as to maximize the throughput while maintaining a power budget constraint. Further, a radio base station for MU-MIMO transmissions is provided.
    • 提供了一对移动终端与无线基站之间的多用户多输入多输出(MU-MIMO)传输的功率控制方法(310)。 该方法包括确定(312)移动终端与无线电基站之间的无线电信道的信噪比(SINR),确定(312)无线电信道之间的信道正交性,并共同确定(315) ,基于SINR和信道正交性,移动终端的功率调整值。 本发明利用通过优化共同调度的移动终端的发送功率来改善由MU-MIMO传输产生的系统增益的理解。 例如,可以确定功率调整值以便获得某些SINR目标。 或者,可以确定功率调整值,以便在维持功率预算约束的同时使吞吐量最大化。 此外,提供了一种用于MU-MIMO传输的无线电基站。
    • 2. 发明申请
    • SCHEDULING REQUEST TRANSMISSION METHOD AND APPARATUS FOR DECOUPLED DOWNLINK-UPLINK
    • 调度请求传输方法和解码下行链路上行链路的设备
    • WO2014067028A1
    • 2014-05-08
    • PCT/CN2012/001472
    • 2012-10-30
    • TELEFONAKTIEBOLAGET L M ERICSSON(PUBL)ZHAO, ZhenshanLU, Qianxi
    • ZHAO, ZhenshanLU, Qianxi
    • H04W72/04
    • H04W72/1263H04L1/1671H04L1/1812H04L1/1854H04L5/0055H04W72/0406H04W72/1284
    • This disclosure provides a Scheduling Request transmission method (10) for decoupled downlink-uplink in heterogeneous network, where the heterogeneous network comprises at least two cells in charge of downlink and uplink transmission separately and connected with any backhaul, the method comprising: determining (11) a positive Data Scheduling Request, D-SR, is to be transmitted in a current D-SR's subframe together with HARQ-ACK/NACK on PUCCH using PUCCH format 1a/1b/3; transmitting (12) a HARQ-ACK/NACK in the current D-SR's subframe on PUCCH together with a negative D-SR using PUCCH format 1/1a/1b or format 3 while transmitting a Scheduling Request, SR, in a next SR's subframe subsequent to the current D-SR's subframe. In this method, the Scheduling Request (SR) of the UEs can be correctly detected in the Pico base station to trigger UL transmission in decoupled UL/DL scenario in various case and any kinds of backhaul can be supported.
    • 本公开提供了一种用于异构网络中的解耦的下行链路 - 上行链路的调度请求传输方法(10),其中异构网络分别包括负责下行链路和上行链路传输的至少两个小区并与任何回程相关联,该方法包括:确定(11 )将使用PUCCH格式1a / 1b / 3在PUCCH上使用HARQ-ACK / NACK在当前D-SR的子帧中发送正数据调度请求D-SR; 在下一个SR子帧中发送调度请求SR时,使用PUCCH格式1 / 1a / 1b或格式3在PUCCH上的当前D-SR子帧中与负D-SR一起发送(12)HARQ-ACK / NACK 在当前D-SR的子帧之后。 在这种方法中,可以在Pico基站中正确地检测UE的调度请求(SR),以便在各种情况下在解耦的UL / DL场景中触发UL传输,并且可以支持任何种类的回程。
    • 4. 发明申请
    • METHOD, USER EQUIPMENT AND BASE STATIONS FOR PERFORMING RANDOM ACCESS PROCEDURES
    • 方法,用户设备和基站执行随机访问程序
    • WO2014063298A1
    • 2014-05-01
    • PCT/CN2012/083342
    • 2012-10-23
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)LU, QianxiZHAO, Zhenshan
    • LU, QianxiZHAO, Zhenshan
    • H04W74/08H04W48/02
    • H04W74/08H04W84/045Y02D70/1262
    • A method, a user equipment, base stations for performing random access procedures in a network including a high power base station, a low power base station and a user equipment are provided, wherein the user equipment is in connection with the high power base station in a downlink direction and is in connection with the low power base station in an uplink direction. The method comprises performing, by the user equipment, the random access procedure with the low power base station if the random access procedure is initiated by the user equipment. The method further comprises performing, by the user equipment, the random access procedure with the high power base station if the random access procedure is initiated by the high power base station. With the present invention, the duration of the random access procedure conducted under the decoupled downlink/uplink scenario can be significantly shortened.
    • 提供一种方法,用户设备,用于在包括高功率基站,低功率基站和用户设备的网络中执行随机接入过程的基站,其中用户设备与高功率基站 下行链路方向,并且在上行链路方向上与低功率基站相关联。 该方法包括:如果用户设备发起随机接入过程,则由用户设备执行与低功率基站的随机接入过程。 该方法还包括如果随机接入过程是由高功率基站发起的,则由用户设备执行与高功率基站的随机接入过程。 利用本发明,可以显着缩短在解耦的下行链路/上行链路情景下进行的随机接入过程的持续时间。
    • 8. 发明申请
    • METHOD AND APPARATUS FOR COORDINATING RESOURCES BETWEEN DIFFERENT TYPES OF COMMUNICATIONS
    • 不同类型通信协调资源的方法和装置
    • WO2015113221A1
    • 2015-08-06
    • PCT/CN2014/071693
    • 2014-01-28
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)ZHAO, Zhenshan
    • ZHAO, ZhenshanLU, Qianxi
    • H04W72/04
    • H04W52/243H04W52/383H04W52/386H04W72/042H04W72/0473H04W72/082H04W74/085
    • Embodiments of the present invention provide a method (400) for use in a terminal device for coordinating resources between two different types of communications. The method comprises receiving (410) resource allocation information indicating the allocation of resource units for the two different types of communications and determining (420), based on the resource allocation information, whether there will be a collision between the two different types of communications on a specific resource unit. The method also comprises in response to determining that there will be a collision between the two different types of communications on the specific resource unit, adjusting (430) one of the two different types of communications on the specific resource unit such that the collision may be avoided. The method further comprises resuming (440) the adjusted one of the two different types of communications on a next non-colliding resource unit allocated for the adjusted type of communications.
    • 本发明的实施例提供一种在终端设备中用于协调两种不同类型的通信之间的资源的方法(400)。 该方法包括接收(410)指示用于两种不同类型的通信的资源单元的分配的资源分配信息,并且基于资源分配信息确定(420)在两种不同类型的通信之间是否存在冲突 一个具体的资源单位。 该方法还包括响应于确定在特定资源单元上的两种不同类型的通信之间将存在冲突,在特定资源单元上调整(430)两种不同类型的通信中的一种,使得冲突可以是 避免。 该方法还包括在为调整的通信类型分配的下一个非冲突资源单元上恢复(440)两种不同类型的通信中调整的一个。
    • 10. 发明申请
    • METHODS AND APPARATUS FOR DETERMINING D2D TRANSMISSION AND RECEPTION TIMINGS IN MIXED CELLULAR AND D2D NETWORK
    • 用于确定混合细胞和D2D网络中D2D传输和接收时序的方法和装置
    • WO2014194801A1
    • 2014-12-11
    • PCT/CN2014/079051
    • 2014-06-03
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)LU, Qianxi
    • LU, QianxiMIAO, QingyuZHAO, Zhenshan
    • H04W56/00
    • H04W56/0045
    • The present disclosure discloses a method performed by a D2D RX communication device in a mixed cellular and device-to-device (D2D) network for determining D2D transmission timing, a method performed by a D2D TX communication device in a mixed cellular and D2D network for determining D2D reception timing, as well as the D2D RX communication device and D2D TX communication device. The method performed by the D2D RX communication device comprises the step of receiving a synchronization signaling from a D2D transmitting, TX, communication device which is paired with the D2D RX communication device. The method performed by a D2D RX communication device also comprises the step of determining a D2D reception timing reference according to the received synchronization signaling. The method performed by the D2D TX communication device comprises the step of determining a D2D transmission timing reference to be consistent with the D2D TX communication device's UL transmission timing for cellular communications in the mixed cellular and D2D network. The method performed by the D2D TX communication device also comprises the step of transmitting a synchronization signaling to a D2D RX communication device paired with the D2D TX communication device, according to the determined D2D transmission timing reference.
    • 本公开公开了一种由混合蜂窝和设备到设备(D2D)网络中的D2D RX通信设备执行的用于确定D2D传输定时的方法,由混合蜂窝和D2D网络中的D2D TX通信设备执行的方法, 确定D2D接收定时,以及D2D RX通信设备和D2D TX通信设备。 由D2D RX通信设备执行的方法包括从与D2D RX通信设备配对的D2D发送TX通信设备接收同步信令的步骤。 由D2D RX通信设备执行的方法还包括根据接收的同步信令确定D2D接收定时参考的步骤。 由D2D TX通信设备执行的方法包括以下步骤:将D2D传输定时参考确定为与D2D TX通信设备在混合蜂窝和D2D网络中的蜂窝通信的UL传输定时一致。 由D2D TX通信设备执行的方法还包括根据确定的D2D传输定时参考,向与D2D TX通信设备配对的D2D RX通信设备发送同步信令的步骤。