公开(公告)号：EP2777312A4

公开(公告)日：2015-12-16

申请号：EP11875306

申请日：2011-11-08

Applicant: ERICSSON TELEFON AB L M

Inventor： LU QIANXI ,  HU YANG ,  MIAO QINGYU ,  SONG XINGHUA

IPC: H04W16/10 ,  H04L5/00 ,  H04L25/08 ,  H04W36/30 ,  H04W72/08

CPC classification number: H04W76/043 ,  H04L5/0051 ,  H04W24/10 ,  H04W76/023 ,  H04W88/06

Abstract: The invention relates to a method (20) in a device-to-device, D2D, enabled user equipment (12) of a communication system (10). The D2D enabled user equipment (12) supports D2D-communication with another D2D-enabled user equipment (15). The communication system (10) comprises a base station (15) serving one or more cellular user equipment (14) unable to support D2D communication. The D2D enabled user equipment (2, 15) and the cellular user equipment (14) share the same communication resources. The method (20) comprises: receiving (21), from the base station (13), configuration parameters comprising information on a reference signal pattern for use by the D2D enabled user equipment (12), and transmitting (22), based on the configuration parameters, cellular reference signals, enabling the cellular user equipment (14) to measure and report, to the base station (13), channel information on a channel from the D2D enabled user equipment (12) to the cellular user equipment (14). The invention also relates to D2D user equipment, methods in a base station, base station, computer programs and computer program products.

公开(公告)号：EP2923510A4

公开(公告)日：2016-07-27

申请号：EP12888839

申请日：2012-11-26

Applicant: ERICSSON TELEFON AB L M

Inventor： LI SHAOHUA ,  GUO ZHIHENG ,  LIU JINHUA ,  SONG XINGHUA ,  ZHANG ZHAN

IPC: H04W24/08 ,  H04B17/345

CPC classification number: H04B17/345 ,  H04L5/0032 ,  H04W24/08 ,  H04W52/143 ,  H04W52/241 ,  H04W52/243 ,  H04W72/0446

Abstract: A first radio network node (110) and a method therein for measuring interference as well as a second radio network node (120) and a method therein for enabling the first radio network node to measure interference are disclosed. The first radio network node (110) obtains (201) configuration information for indicating a designated subframe in which a reference signal for measurement of the interference is to be transmitted by the second radio network node (120). The second radio network node (120) obtains (202) configuration information for configuring a designed subframe for transmission of a reference signal. The first radio network node (110) receives (205), in the designated subframe indicated by the configuration information, the reference signal transmitted by the second radio network node (120). The first radio network node (110) determines (206) a value of the interference based on the reference signal.

公开(公告)号：EP2826285A4

公开(公告)日：2016-01-13

申请号：EP12871474

申请日：2012-03-14

Applicant: ERICSSON TELEFON AB L M

Inventor： LU QIANXI ,  MIAO QINGYU ,  QIAN YU ,  SONG XINGHUA

IPC: H04W24/10 ,  H04J11/00

CPC classification number: H04W24/08 ,  H04J11/0023 ,  H04J11/005 ,  H04L5/005 ,  H04L5/0073 ,  H04L5/0091 ,  H04L27/2613 ,  H04W72/042 ,  H04W76/023 ,  H04W88/06 ,  H04W88/10 ,  H04W92/18

Abstract: The present invention provides a method in a base station for determining channel interference in a radio network comprising a device-to-device, D2D, capable UE and the base station serving at least one cellular UE, said method comprising: configuring the at least one cellular UE with a cellular uplink Reference Symbol, RS, related parameter; transmitting the cellular uplink RS related parameter associated with the at least one cellular UE to the D2D capable UE; and obtaining information of interference to the D2D capable UE measured by the D2D capable UE using the cellular uplink RS related parameter. The present invention also provides a corresponding method in D2D capable UE and the devices thereof. This achieves a more accurate the interference channel measurement in multi-cell and multi-antenna scenario.

公开(公告)号：EP2749080A4

公开(公告)日：2015-04-15

申请号：EP11877103

申请日：2011-12-07

Applicant: ERICSSON TELEFON AB L M

Inventor： ZHANG ZHAN ,  QIAN YU ,  SONG XINGHUA ,  WANG JIANFENG

IPC: H04W40/02 ,  H04B7/02 ,  H04B7/06 ,  H04B7/08 ,  H04L5/00 ,  H04W72/04 ,  H04W72/08 ,  H04W88/08

CPC classification number: H04L5/0073 ,  H04B7/024 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0626 ,  H04B7/086 ,  H04L5/006 ,  H04L5/0069 ,  H04W72/0413

Abstract: The embodiments relate to a method and a base station (110) for interference management in a cellular network (100) employing Space-Division uplink (UL) downlink (DL) Duplexing (SDD). The base station (110) assigns a plurality of Remote Radio Units (RRU) as Tx RRUs operable to dedicatedly transmit downlink signals to a plurality of UEs and Rx RRUs operable to dedicatedly receive uplink signals from the plurality of UEs at the same frequency band and same time as the transmission of the Tx RRUs. The base station then suppresses the interference caused by simultaneous transmission on the same frequency band by using a Tx spatial beamforming weighting matrix and a Rx spatial beamforming weighting matrix. In addition, the base station may perform cross-talk cancellation on the residual interference contained in the received signals by using the knowledge of the downlink traffic data.

公开(公告)号：WO2011156939A8

公开(公告)日：2012-12-13

申请号：PCT/CN2010000927

申请日：2010-06-24

Applicant: ERICSSON TELEFON AB L M ,  HU YANG ,  SONG XINGHUA ,  WANG JIANFENG

Inventor： HU YANG ,  SONG XINGHUA ,  WANG JIANFENG

IPC: H04W72/04

CPC classification number: H04W24/02 ,  H04J13/0003 ,  H04J13/004 ,  H04J13/0048 ,  H04J13/18 ,  H04L5/0016 ,  H04L5/0051 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/0232 ,  H04L27/2613 ,  H04L27/262 ,  H04W48/08 ,  H04W72/042

Abstract: In some embodiments, a method is provided in a radio network node for transmitting a reference signal over an antenna port, wherein the reference signal is transmitted in a code division multiplexing, CDM, group. The CDM group comprises at least two CDM subgroups, each CDM subgroup being transmitted on a different subcarrier. Each CDM subgroup comprises resource elements. In a first step, the radio network node transmits the reference signal over a first CDM subgroup using an orthogonal cover code. The first CDM subgroup comprises resource elements in a first time slot and a subsequent time slot. In a further step, the radio network node transmits the reference signal over a second CDM subgroup using a permutation of the orthogonal cover code. The second CDM subgroup comprises resource elements in the first time slot and the second time slot. The permutation of the orthogonal cover code is selected in such a way as to enable decoding of the reference signal in the frequency domain, by applying the orthogonal cover code only to resource elements in the CDM group which are comprised in the first time slot.

Abstract translation: 在一些实施例中，在无线电网络节点中提供了一种用于通过天线端口发送参考信号的方法，其中参考信号在码分多路复用，CDM组中传输。 CDM组包括至少两个CDM子组，每个CDM子组在不同的子载波上传输。 每个CDM子组包括资源元素。 在第一步骤中，无线电网络节点使用正交覆盖码通过第一CDM子组发送参考信号。 第一CDM子组包括第一时隙中的资源元素和随后的时隙。 在另一步骤中，无线电网络节点使用正交覆盖码的置换在第二CDM子群上发送参考信号。 第二CDM子组包括第一时隙中的资源元素和第二时隙。 选择正交覆盖码的排列，以便通过仅对包含在第一时隙中的CDM组中的资源元素应用正交覆盖码，使得能够对频域中的参考信号进行解码。

公开(公告)号：WO2013035052A2

公开(公告)日：2013-03-14

申请号：PCT/IB2012054589

申请日：2012-09-05

Applicant: ERICSSON TELEFON AB L M ,  HU YANG ,  SONG XINGHUA ,  LI SHAOHUA

Inventor： HU YANG ,  SONG XINGHUA ,  LI SHAOHUA

IPC: H04B17/00 ,  H04B7/02 ,  H04B7/06

CPC classification number: H04W36/0083 ,  H04B7/024 ,  H04B7/063 ,  H04B17/318

Abstract: Devices and methods for improving performance in a network with geographically separated antenna ports based on determining arid reporting reference signal power from a communication device to a base station are provided. In one aspect, the difference between received reference signal power values is used in determining a reported reference signal power value, such as reference signal received power (RSRP) in a Multiple-Input Multiple-Output (MIMO) network including geographically separated antenna ports transmitting on cell-specific reference signal (CBS) ports 0 and 1. Devices and methods for measuring and reporting per-port reference signal power values are provided.

Abstract translation: 提供了用于基于从通信设备向基站确定和报告参考信号功率来改善具有地理上分离的天线端口的网络中的性能的设备和方法。 在一个方面中，接收的参考信号功率值之间的差异被用于确定所报告的参考信号功率值，诸如包括地理上分离的天线端口传输的多输入多输出（MIMO）网络中的参考信号接收功率（RSRP） 在特定于小区的参考信号（CBS）端口0和1上。提供了用于测量和报告每端口参考信号功率值的设备和方法。

公开(公告)号：WO2016056993A2

公开(公告)日：2016-04-14

申请号：PCT/SE2015051076

申请日：2015-10-09

Applicant: ERICSSON TELEFON AB L M

Inventor： SORRENTINO STEFANO ,  SONG XINGHUA

IPC: H04W52/38

CPC classification number: H04W52/383 ,  H04B17/318 ,  H04W52/16 ,  H04W72/04 ,  H04W76/023

Abstract: According to some embodiments, a method in a wireless device comprises measuring power of a Device-to-Device (D2D) signal used by the wireless device for D2D operation; determining a power difference between the measured power of the D2D signal and a physical Device-to-Device Synchronization Signal (D2DSS); estimating power of a D2DSS using the measured power of the D2D signal and the determined power difference; and performing a D2D operation using the estimated power of the D2DSS.

Abstract translation: 根据一些实施例，一种无线设备中的方法包括：测量无线设备用于D2D操作的设备到设备（D2D）信号的功率; 确定所测量的D2D信号的功率与物理设备到设备同步信号（D2DSS）之间的功率差; 使用所测量的D2D信号的功率和所确定的功率差来估计D2DSS的功率; 以及使用D2DSS的估计功率执行D2D操作。

公开(公告)号：WO2015112071A2

公开(公告)日：2015-07-30

申请号：PCT/SE2014050937

申请日：2014-08-14

Applicant: ERICSSON TELEFON AB L M

Inventor： ERIKSSON ERIK ,  SONG XINGHUA

CPC classification number: H04L41/0853 ,  H04B7/15557 ,  H04B7/2656 ,  H04W24/10 ,  H04W72/0446

Abstract: A method (211) for providing wireless devices (120; 122) in radio communication with the network node (110) with different network configurations based on different channel characteristics of the wireless devices. The method includes transmitting (213) a first subframe monitoring information message using a first signaling identifier for addressing one or more wireless devices (120 and/or 122) having a first control channel configuration and transmitting (215) a second subframe monitoring information message using a second signaling identifier for addressing one or more wireless devices (120 and/or 122) having a second control channel configuration. Related methods as well as network nodes (110) and wireless devices (120) that implement these methods are also provided.

Abstract translation: 一种用于基于所述无线设备的不同信道特性以不同网络配置提供与所述网络节点（110）进行无线电通信的无线设备（120; 122）的方法（211）。 该方法包括：使用用于对具有第一控制信道配置的一个或多个无线设备（120和/或122）进行寻址的第一信令标识符来发送（213）第一子帧监视信息消息;以及使用第一子帧监视信息消息来发送（215） 用于寻址具有第二控制信道配置的一个或多个无线设备（120和/或122）的第二信令标识符。 还提供了相关方法以及实现这些方法的网络节点（110）和无线设备（120）。

公开(公告)号：EP2883382A4

公开(公告)日：2016-03-16

申请号：EP12882752

申请日：2012-08-09

Applicant: ERICSSON TELEFON AB L M

Inventor： NIE JINGYUE ,  SONG XINGHUA ,  XIAO LEI ,  ZHU HUAISONG

IPC: H04W72/04 ,  H04L5/14

CPC classification number: H04W72/1273 ,  H04L5/14

Abstract: The embodiments disclose a method and BS to utilize a new Special Sub-Frame (SSF) in a legacy Time Division Duplex (TDD) cellular network, the BS is enabled to support the new SSF, the method notifies one or more User Equipments (UEs) served by the BS of a legacy SSF configuration, which actually is the corresponding new SSF configuration; schedules a downlink transmission including the new SSF from the BS to at least one of the one or more UEs respectively and performing the scheduled downlink transmission to the respective UE; and when receiving a response in a uplink transmission from the UE in response to the scheduled downlink transmission, determines that the UE is enabled to support the new SSF and thus communicating with the UE by means of the new SSF.

公开(公告)号：WO2016120827A2

公开(公告)日：2016-08-04

申请号：PCT/IB2016050441

申请日：2016-01-28

Applicant: ERICSSON TELEFON AB L M

Inventor： LIU JINHUA ,  SONG XINGHUA ,  LI SHAOHUA

IPC: H04L1/00 ,  H04L1/18

CPC classification number: H04L1/1861 ,  H04L1/0026 ,  H04L1/0046 ,  H04L1/1864 ,  H04L1/1893

Abstract: Systems and methods relating to the use of an unlicensed Component Carrier (CC) for Hybrid Automatic Repeat Request (HARQ) and/or Channel State Information (CSI) feedback for a downlink CC or a downlink CC group are disclosed. In some embodiments, a method of operation of a wireless device in a cellular communications network comprises selecting, from a plurality of uplink CCs configured for the wireless device for HARQ and/or CSI feedback of a downlink CC or a downlink CC group, an uplink CC for HARQ and/or CSI feedback of the downlink CC or the downlink CC group based on channel availability. The method further comprises transmitting HARQ and/or CSI feedback of the downlink CC or the downlink CC group over the uplink CC selected from the plurality of uplink CCs configured for the wireless device.

Abstract translation: 公开了与针对下行链路CC或下行链路CC组的混合自动重传请求（HARQ）和/或信道状态信息（CSI）反馈的使用非许可分量载波（CC）有关的系统和方法。 在一些实施例中，蜂窝通信网络中的无线设备的操作方法包括从为无线设备配置的多个上行链路CC中选择下行链路CC或下行链路CC组的HARQ和/或CSI反馈，上行链路 CC用于基于信道可用性的下行链路CC或下行链路CC组的HARQ和/或CSI反馈。 该方法还包括通过从为无线设备配置的多个上行链路CC中选择的上行链路CC发送下行链路CC或下行链路CC组的HARQ和/或CSI反馈。