公开(公告)号：WO2015172098A1

公开(公告)日：2015-11-12

申请号：PCT/US2015/030012

申请日：2015-05-08

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： LOU, Hanqing ,  WANG, Xiaofei ,  OTERI, Oghenekome ,  OLESEN, Robert, L.

IPC: H04W72/12 ,  H04W74/08 ,  H04W72/04 ,  H04W72/08

CPC classification number: H04W72/121 ,  H04W72/0453 ,  H04W72/08 ,  H04W74/0808

Abstract: Methods and apparatus may be used for sounding for multi-user (MU) scheduling and for signaling and procedures for sub-channel selection. A wireless transmit/receive unit (WTRU) may receive information from an access point (AP) indicating a plurality of sub-channels to use for uplink data transmission as part of uplink MU wireless communications using a carrier sense multiple access (CSMA) wireless medium. The WTRU may transmit, using a plurality of sub-channels, a Physical Layer Convergence Protocol (PLCP) Protocol Data Unit (PPDU) including a preamble portion and a data portion, and, using at least a subset of the plurality of sub-channels, sounding signals to the AP for scheduling MU communications. The AP may receive sounding information from more WTRUs that the plurality of WTRUS associated with the scheduling information for the uplink data transmission during a time interval, in addition to receiving uplink data from the plurality of WTRUs.

Abstract translation: 方法和装置可以用于多用户（MU）调度的探测和用于子信道选择的信令和过程。 无线发射/接收单元（WTRU）可以从接入点（AP）接收指示使用上行链路数据传输的多个子信道的信息，作为使用载波侦听多路访问（CSMA）无线介质的上行链路MU无线通信的一部分 。 WTRU可以使用多个子信道来发送包括前导码部分和数据部分的物理层汇聚协议（PLCP）协议数据单元（PPDU），并且使用多个子信道中的至少一个子集来发送 ，向AP发送调度MU通信的信号。 除了接收来自多个WTRU的上行链路数据之外，AP还可以从多个WTRU接收与在用于时间间隔期间的上行链路数据传输的调度信息相关联的多个WTRUS的探测信息。

公开(公告)号：WO2015171262A1

公开(公告)日：2015-11-12

申请号：PCT/US2015/025431

申请日：2015-04-10

Applicant: INTEL IP CORPORATION

Inventor： KWON, Hwan-Joon ,  HEO, Youn Hyoung ,  HAN, Seunghee ,  FWU, Jong-Kae ,  HE, Hong

IPC: H04W28/04 ,  H04W88/10 ,  H04L1/18

CPC classification number: H04L5/001 ,  H04L1/18 ,  H04L1/1887 ,  H04L1/1893 ,  H04L5/0055 ,  H04L2001/0092 ,  H04W28/085 ,  H04W72/0486 ,  H04W74/0808

Abstract: A hybrid automatic repeat request (HARQ) process enables a retransmission to be sent on a carrier (or medium, set of frequencies, band, etc.) different from the carrier on which the previous transmissions (initial transmission and/or retransmissions) were sent. An enhanced HARQ process can improve system performance by aiding user throughput, system throughput, and delay performance by making retransmissions possible even when the unlicensed band is not available (e.g., when occupied by other RATs or the same RAT deployed by another operator). For example, a transmitter sends a subpacket in an unlicensed band. The receiver feeds back a NACK to the transmitter due to the packet decoding failure. If the medium is not idle, the transmitter sends the retransmission in another band or another channel that can be either a licensed band/channel or another unlicensed band/channel. The retransmission can be sent in multiple licensed and/or unlicensed bands/channels at the same time.

Abstract translation: 混合自动重传请求（HARQ）过程使得能够在与先前发送（初始发送和/或重发）被发送的载波不同的载波（或媒体，频率组，频带等）上发送重传 。 增强的HARQ进程可以通过即使当非许可频带不可用时（例如，当由其他RAT或由另一运营商部署的相同RAT占用）时，通过使重传成为可能来辅助用户吞吐量，系统吞吐量和延迟性能来提高系统性能。 例如，发射机在非授权频带中发送子分组。 由于分组解码失败，接收机将NACK反馈给发射机。 如果介质不空闲，则发射机在另一个频带或另一个可能是许可频带/频道或另一个未许可频带/频道的频道上发送重传。 可以同时在多个许可的和/或未许可的频带/频道中发送重传。

公开(公告)号：WO2015169397A1

公开(公告)日：2015-11-12

申请号：PCT/EP2014/062345

申请日：2014-06-13

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： TIIROLA, Esa Tapani ,  LUNTTILA, Timo Erkki ,  HOOLI, Kari Juhani ,  HUGL, Klaus

IPC: H04L5/00 ,  H04W72/04

CPC classification number: H04L5/0001 ,  H04L5/0037 ,  H04L5/0055 ,  H04L5/0092 ,  H04W28/26 ,  H04W72/0453 ,  H04W74/0808

Abstract: There is provided a method, comprising: setting, by a radio device, length for a channel reservation window such that the channel reservation window comprises a plurality of subframes; dividing the channel reservation window at least into a downlink part and an uplink part, wherein the downlink part comprises at least one or more subframes of the plurality of subframes and the uplink part comprises at least one or more other subframes of the plurality of subframes; determine a timing offset between the start of the downlink part and the start of the uplink part, wherein the timing offset is based at least partly on applied timing advance; and defining timings, within the channel reservation window, for at least one of a downlink clear channel assessment –process and an uplink clear channel assessment –process at least partly on the basis of the timing offset.

Abstract translation: 提供了一种方法，包括：通过无线电设备设置用于信道预留窗口的长度，使得信道预留窗口包括多个子帧; 将所述信道预留窗口至少划分为下行链路部分和上行链路部分，其中所述下行链路部分包括所述多个子帧中的至少一个或多个子帧，并且所述上行链路部分包括所述多个子帧中的至少一个或多个其他子帧; 确定下行链路部分的开始与上行链路部分的开始之间的定时偏移，其中定时偏移至少部分地基于应用的定时提前; 以及至少部分地基于所述定时偏移量，在所述信道预留窗口内为至少一个下行链路清除信道评估处理和上行链路清除信道评估处理定义定时。

公开(公告)号：WO2015157450A1

公开(公告)日：2015-10-15

申请号：PCT/US2015/024974

申请日：2015-04-08

Applicant: QUALCOMM INCORPORATED

Inventor： SADEK, Ahmed Kamel

IPC: H04W72/12 ,  H04W16/14 ,  H04W88/10 ,  H04W84/04 ,  H04W88/06

CPC classification number: H04W76/048 ,  H04W16/14 ,  H04W72/1215 ,  H04W72/1289 ,  H04W74/0808 ,  H04W76/16 ,  H04W76/28 ,  H04W84/045 ,  H04W88/06 ,  H04W88/10

Abstract: Systems and methods for Discontinuous Reception (DRX)-aware Carrier Sense Adaptive Transmission (CSAT) communication in shared spectrum are disclosed. An access point, for example, may receive signals via a medium in accordance with a first RAT, and identify utilization of the medium associated with the first RAT based on the received signals. Based on the identified utilization of the medium, operation of a second RAT may be cycled between activated and deactivated periods of transmission over the medium in accordance with a Time Division Multiplexing (TDM) communication pattern. A Medium Access Control (MAC) Control Element (CE) may be transmitted to an access terminal associated with the second RAT to activate or deactivate the access terminal in accordance with the TDM communication pattern. The timing of the MAC CE transmission may be based on the TDM communication pattern and a DRX pattern associated with the access terminal.

Abstract translation: 公开了用于共享频谱中的不连续接收（DRX） - 载波侦听自适应传输（CSAT）通信的系统和方法。 例如，接入点可以经由根据第一RAT的媒体接收信号，并且基于接收的信号来识别与第一RAT相关联的媒体的利用。 基于所识别的媒体的利用率，第二RAT的操作可以根据时分复用（TDM）通信模式在介质上的激活和去激活的传输周期之间循环。 媒体访问控制（MAC）控制元素（CE）可以被发送到与第二RAT相关联的接入终端，以根据TDM通信模式激活或去激活接入终端。 MAC CE传输的定时可以基于TDM通信模式和与接入终端相关联的DRX模式。

公开(公告)号：WO2015149671A1

公开(公告)日：2015-10-08

申请号：PCT/CN2015/075443

申请日：2015-03-31

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： SALEM, Mohamed Adel ,  MA, Jianglei ,  BALIGH, Mohammadhadi

IPC: H04W52/02

CPC classification number: H04W40/10 ,  H04B7/0697 ,  H04W16/14 ,  H04W28/08 ,  H04W52/0203 ,  H04W52/0206 ,  H04W52/0209 ,  H04W68/02 ,  H04W72/0406 ,  H04W72/082 ,  H04W74/0808 ,  Y02B70/30 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/21 ,  Y02D70/23 ,  Y02D70/25 ,  Y02D70/326

Abstract: Operational and environmental efficiency in virtual radio access networks (VRANs) can be improved by offloading data traffic and/or control signaling between physical transmit points (TPs) of a virtual TP. This may allow one or more physical TPs of the virtual TP to be muted in the downlink or uplink direction, thereby reducing energy consumption. The offloading may be performed during relatively short time-intervals such that physical TP are muted for one or more transmission time intervals (TTIs) before being re-activated. The offloading may also be implemented over longer time-intervals in accordance with a traffic engineering (TE) policy. Further it is possible to re-activate a de-activated downlink transmitter of physical TP by monitoring wireless signals via an activated receiver of the physical TP.

Abstract translation: 通过在虚拟TP的物理传输点（TP）之间卸载数据流量和/或控制信令，可以改善虚拟无线电接入网络（VRAN）中的操作和环境效率。 这可以允许虚拟TP的一个或多个物理TP在下行链路或上行链路方向上被静音，由此降低能量消耗。 卸载可以在相对较短的时间间隔内执行，使得物理TP在被重新激活之前被一个或多个传输时间间隔（TTI）静音。 根据流量工程（TE）策略，卸载也可以在更长的时间间隔上实现。 此外，可以通过经由物理TP的激活的接收器监视无线信号来重新激活物理TP的去激活下行链路发射机。

公开(公告)号：WO2015126298A1

公开(公告)日：2015-08-27

申请号：PCT/SE2014/050221

申请日：2014-02-21

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

Inventor： HÖGLUND, Andreas ,  KRONANDER, Jonas

IPC: H04W16/14 ,  H04W72/04

CPC classification number: H04W74/0808 ,  H04L5/0048 ,  H04W4/70 ,  H04W16/14 ,  H04W48/16 ,  H04W72/0453 ,  H04W76/28

Abstract: A method, in a network node, for managing a wireless device is disclosed. The method comprises conducting spectrum opportunity detection within a spectrum band (120) and indicating a result of the spectrum opportunity detection to the wireless device (140). For the purposes of the method, a spectrum opportunity comprises a channel within the spectrum band which is at least temporarily available for use by the wireless device. Also disclosed is a method in a wireless device in a network. The method comprises detecting an indication of a result of spectrum opportunity detection conducted by a network node within a spectrum band (440) and if the indication indicates a detected spectrum opportunity, conducting one of a transmission or reception operation on the detected spectrum opportunity (480). Also disclosed are a computer program product for carrying out the above methods, a network node and a wireless device.

Abstract translation: 公开了一种在网络节点中用于管理无线设备的方法。 该方法包括在频谱带（120）内进行频谱机会检测，并向无线设备（140）指示频谱机会检测的结果。 为了该方法的目的，频谱机会包括至少临时可供无线设备使用的频谱带内的信道。 还公开了一种在网络中的无线设备中的方法。 该方法包括检测由频谱带（440）内的网络节点进行的频谱机会检测的结果的指示，并且如果该指示指示检测到的频谱机会，则对检测到的频谱机会执行发送或接收操作之一（480 ）。 还公开了用于执行上述方法的计算机程序产品，网络节点和无线设备。

公开(公告)号：WO2015057654A3

公开(公告)日：2015-07-09

申请号：PCT/US2014060410

申请日：2014-10-14

Applicant: QUALCOMM INC

Inventor： XU HAO ,  CHEN WANSHI ,  BHUSHAN NAGA ,  GAAL PETER ,  JI TINGFANG ,  LUO TAO ,  WEI YONGBIN ,  MALLADI DURGA PRASAD ,  PATEL SHIMMAN ARVIND

IPC: H04L5/00 ,  H04W16/14 ,  H04W74/08

CPC classification number: H04W56/0005 ,  H04L5/001 ,  H04L5/0091 ,  H04W16/14 ,  H04W74/0808

Abstract: Certain aspects of the present disclosure relate to techniques that may help address issues in wireless communications systems that utilize unlicensed radio frequency spectrum bands. For example, the techniques presented herein may be used in systems where frames transmitted in licensed and/or un-licensed component carriers are not synchronous.

Abstract translation: 本公开的某些方面涉及可以帮助解决利用未经许可的射频频带的无线通信系统中的问题的技术。 例如，本文中呈现的技术可以用于在许可和/或未授权分量载波中发送的帧不同步的系统中。

公开(公告)号：WO2015096011A1

公开(公告)日：2015-07-02

申请号：PCT/CN2013/090244

申请日：2013-12-23

Applicant: 华为技术有限公司

Inventor： 马驰翔 ,  张佳胤 ,  林英沛 ,  伍天宇

IPC: H04W16/14

CPC classification number: H04W72/12 ,  H04W72/0446 ,  H04W74/0808 ,  H04W84/12

Abstract: 一种多载波聚合的方法、装置、用户设备及网络侧设备，方法包括：网络侧设备根据对至少一个成员载波竞争成功得到的传输资源的信息确定所述至少一个成员载波对应的调度时间段的起止时间，其中，所述调度时间段被上下行切换点划分为调度时间段的上行时间段和调度时间段的下行时间段；所述上下行切换点用于在时间上划分成员载波的上行时间和成员载波的下行时间，并且两个或两个以上成员载波的上下行切换点在时间上对齐；网络侧设备在调度时间段的下行时间段与用户设备进行下行传输；网络侧设备在调度时间段的上行时间段与用户设备进行上行传输。本发明实施例能够提高各个成员载波的利用率。

公开(公告)号：WO2015089282A1

公开(公告)日：2015-06-18

申请号：PCT/US2014/069746

申请日：2014-12-11

Applicant: QUALCOMM INCORPORATED

Inventor： YERRAMALLI, Srinivas ,  CHEN, Wanshi ,  LUO, Tao ,  GAAL, Peter ,  MALLADI, Durga, Prasad ,  WEI, Yongbin ,  XU, Hao ,  JI, Tingfang ,  BHUSHAN, Naga ,  DAMNJANOVIC, Aleksandar

IPC: H04W74/08

CPC classification number: H04W24/10 ,  H04L5/0048 ,  H04W16/14 ,  H04W72/04 ,  H04W72/0406 ,  H04W74/0808 ,  H04W84/12

Abstract: Channel state information (CSI) feedback in long term evolution (LTE) and LTE- Advanced (LTE-A) networks including unlicensed spectrum is disclosed in which a base station obtains clear channel assessment (CCA) result information from neighboring base stations, either directly or by determining such results from measurement or reports from user equipment (UE) served by the base station. The base station may then generate control signaling based on the CCA result information for transmission to the one or more UEs served by the base station.

Abstract translation: 公开了包括非许可频谱在内的长期演进（LTE）和LTE-高级（LTE-A）网络中的信道状态信息（CSI）反馈，其中基站从邻近基站获得明确的信道评估（CCA）结果信息， 或者通过从由基站服务的用户设备（UE）的测量或报告确定这样的结果。 然后，基站可以基于CCA结果信息生成控制信令，以便传输给由基站服务的一个或多个UE。

公开(公告)号：WO2015089229A1

公开(公告)日：2015-06-18

申请号：PCT/US2014/069613

申请日：2014-12-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD. ,  FUTUREWEI TECHNOLOGIES, INC.

Inventor： KRZYMIEN, Lukasz ,  CALCEV, George ,  CAI, Lin ,  AHMED, Hanan

IPC: H04L12/26

CPC classification number: H04W28/18 ,  H04B17/318 ,  H04B17/382 ,  H04W74/00 ,  H04W74/0808

Abstract: In one embodiment, a method for setting a clear channel assessment (CCA) threshold includes receiving, by a station from a first access point, a first message including an information element and determining a CCA threshold in accordance with the information element. The method also includes detecting a power level of a channel between the station and the access point to produce a first detected power level and comparing the first detected power level and the CCA threshold. Additionally, the method includes transmitting, by the station to the first access point on the channel, a second message when the detected power level is less than the CCA threshold

Abstract translation: 在一个实施例中，一种用于设置清除信道评估（CCA）阈值的方法包括：从站从第一接入点接收包括信息元素的第一消息，并根据信息元素确定CCA阈值。 该方法还包括检测站与接入点之间的信道的功率电平以产生第一检测功率电平并比较第一检测功率电平和CCA阈值。 另外，该方法包括当检测到的功率电平小于CCA阈值时，由站点向信道上的第一接入点发送第二消息