公开(公告)号：CA2920051A1

公开(公告)日：2015-03-12

申请号：CA2920051

申请日：2014-09-03

Applicant: QUALCOMM INC

Inventor： SADEK AHMED KAMEL

IPC: H04W28/26 ,  H04W88/06

Abstract: Systems and methods are disclosed for mitigating interference between Radio Access Technologies (RATs) sharing operating spectrum in an unlicensed band of radio frequencies. The mitigation may comprise, for example, identifying an upcoming signal transmission associated with a first RAT, with the signal transmission being scheduled for transmission on the shared operating spectrum during a transmission period. The signal transmission may be classified with respect to a protection status. Based on the protection status, a channel reservation message may be transmitted that is associated with a second RAT to reserve at least a portion of the shared operating spectrum for at least a portion of the transmission period.

公开(公告)号：EP3202072A4

公开(公告)日：2017-08-30

申请号：EP15859611

申请日：2015-11-12

Applicant: QUALCOMM INC

Inventor： SADEK AHMED KAMEL ,  KADOUS TAMER ADEL ,  CHENG PENG ,  VALLIAPPAN NACHIAPPAN ,  NAGHSHVAR MOHAMMAD

IPC: H04L1/18 ,  H04W28/18 ,  H04W36/00 ,  H04W52/02

CPC classification number: H04W36/0055 ,  H04L1/00 ,  H04L1/1887 ,  H04L5/001 ,  H04W28/18 ,  H04W52/0216 ,  H04W72/00 ,  H04W72/0406 ,  H04W88/06 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/24 ,  Y02D70/25

Abstract: Techniques for co-existence between wireless Radio Access Technologies (RATs) are disclosed. During an active period of a Discontinuous Transmission (DTX) communication pattern, a first signal may be transmitted during a first subframe and a second signal may be transmitted during a second subframe, while during an inactive period the first signal may be transmitted during the first subframe and the second signal may be omitted during the second subframe. Retransmission of one or more packets may take place over a subset of less than all retransmission opportunities based on the DTX communication pattern. A Secondary Cell (SCell) may be reconfigured as the Primary Cell (PCell) and the PCell may be reconfigured as the SCell for one or more access terminals based on a load balancing condition or a channel selection condition.

Abstract translation: 公开了无线无线电接入技术（RAT）之间共存的技术。 在非连续传输（DTX）通信模式的活动时段期间，第一信号可以在第一子帧期间被发送并且第二信号可以在第二子帧期间被发送，而在非活动时段期间，第一信号可以在第一信号 子帧，并且第二信号可以在第二子帧期间被省略。 基于DTX通信模式，一个或多个分组的重传可以发生在小于全部重传机会的子集上。 基于负载平衡条件或信道选择条件，辅小区（SCell）可以被重新配置为主小区（PCell），并且PCell可以被重新配置为用于一个或多个接入终端的SCell。

公开(公告)号：EP3295747A1

公开(公告)日：2018-03-21

申请号：EP16718740

申请日：2016-02-24

Applicant: QUALCOMM INC

Inventor： SADEK AHMED KAMEL ,  VALLIAPPAN NACHIAPPAN

IPC: H04W72/12

CPC classification number: H04J3/1694 ,  H04J3/14 ,  H04L5/0007 ,  H04W72/1215 ,  H04W74/0808 ,  H04W88/10

Abstract: Techniques for co-existence between wireless Radio Access Technologies (RATs) and related operations in shared spectrum are disclosed. Operation on a communication medium shared between RATs may be managed by a transceiver configured to operate in accordance with a first RAT and to monitor the medium for signaling associated with a second RAT. A medium analyzer may be configured to determine one or more Time Division Multiplexing (TDM) parameters of a TDM communication pattern associated with the second RAT based on the monitored signaling. A transmission controller may be configured to set one or more transmission parameters for the first RAT based on the determined one or more TDM parameters. The transceiver may be further configured to transmit on the medium in accordance with the one or more transmission parameters.

公开(公告)号：WO2015160750A2

公开(公告)日：2015-10-22

申请号：PCT/US2015025671

申请日：2015-04-14

Applicant: QUALCOMM INC

Inventor： SADEK AHMED KAMEL

CPC classification number: H04W24/10 ,  H04W16/14 ,  H04W88/06

Abstract: Described herein are techniques for efficient LTE operation in the unlicensed band. For example, the technique may involve initiating, at the wireless device, a signal measurement of an unlicensed communication band device. The technique may also involve sending, to an access point configured for operation in the unlicensed communication band, a measurement report including the signal measurement of the unlicensed communication band device.

Abstract translation: 这里描述的是用于在非许可频带中有效的LTE操作的技术。 例如，该技术可以包括在无线设备处发起未许可的通信频带设备的信号测量。 该技术还可以涉及向配置用于在非许可通信频带中的操作的接入点发送包括未经许可的通信频带设备的信号测量的测量报告。

公开(公告)号：WO2015047776A3

公开(公告)日：2015-08-27

申请号：PCT/US2014055730

申请日：2014-09-16

Applicant: QUALCOMM INC

Inventor： SADEK AHMED KAMEL

IPC: H04W16/14 ,  H04W72/12 ,  H04W76/04

CPC classification number: H04W16/14 ,  H04J3/00 ,  H04J3/16 ,  H04L5/0053 ,  H04L5/0098 ,  H04W72/082 ,  H04W72/1215 ,  H04W74/0808 ,  H04W76/048

Abstract: Systems and methods for Carrier Sense Adaptive Transmission (CSAT) and related operations in unlicensed spectrum are disclosed to reduce interference between co-existing Radio Access Technologies (RATs). The parameters for a given CSAT communication scheme may be adapted dynamically based on received signals from a transceiver for a native RAT to be protected and an identification of how that RAT is utilizing a shared resource such as an unlicensed band. Other operations such as Discontinuous Reception (DRX) may be aligned with a CSAT Time Division Multiplexed (TDM) communication pattern by way of a DRX broadcast / multicast message. Different TDM communication patterns may be staggered in time across different frequencies. Channel selection for a co-existing RAT may also be configured to afford further protection to native RATs by preferring operation on secondary channels as opposed to primary channels.

公开(公告)号：WO2015047905A2

公开(公告)日：2015-04-02

申请号：PCT/US2014056533

申请日：2014-09-19

Applicant: QUALCOMM INC

Inventor： REDDY AKULA ANEESH ,  VALLIAPPAN NACHIAPPAN ,  SADEK AHMED KAMEL ,  JI TINGFANG

CPC classification number: H04W16/14 ,  H04L5/0098

Abstract: The present disclosure presents a method and an apparatus for improving performance of a user equipment (UE) operating in unlicensed spectrum. For example, the disclosure presents a method for receiving, at the UE, a secondary component carrier (SCC) update from a small cell. The example method further includes tuning the UE to a second SCC in response to receiving the update. The update is received at the UE when the small cell operating on a first radio access technology (RAT) determines that a channel associated with a first SCC of the small cell is also in use by another entity operating on a second RAT. As such, improved performance of a user equipment (UE) operating in an unlicensed spectrum may be achieved.

Abstract translation: 本公开提出了一种用于改善在未经许可的频谱中操作的用户设备（UE）的性能的方法和设备。 例如，本公开提出了一种用于在UE处从小小区接收次要分量载波（SCC）更新的方法。 示例方法还包括响应于接收到更新而将UE调谐到第二SCC。 当在第一无线电接入技术（RAT）上操作的小小区确定与小小区的第一SCC相关联的信道也正在由在第二RAT上操作的另一实体使用时，在UE处接收该更新。 如此，可以实现在未经许可的频谱中操作的用户设备（UE）的改进的性能。

公开(公告)号：WO2016048712A3

公开(公告)日：2016-06-23

申请号：PCT/US2015050167

申请日：2015-09-15

Applicant: QUALCOMM INC

Inventor： SORIAGA JOSEPH BINAMIRA ,  MUKKAVILLI KRISHNA KIRAN ,  JI TINGFANG ,  SMEE JOHN EDWARD ,  BHUSHAN NAGA ,  SADEK AHMED KAMEL

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

CPC classification number: H04W16/14 ,  H04W74/0808 ,  H04W84/042

Abstract: Shared spectrum operation is disclosed for sharing spectrum among multiple wireless deployments. Coordination procedures between and among 2nd and 3rd Tier deployments include the use of beacons transmitted by the 2nd Tier for clearing access to spectrum occupied by 3rd Tier users and multiple 3rd Tier deployments sharing resources using a group-listen before talk (LBT) protocol, rather than a per-node LBT protocol. The 2nd Tier beacon signals are transmitted to alert 3rd Tier users of their presence, which, upon detection, will leave the particular spectrum within a predetermined time. For the shared LBT protocol, the 3rd Tier deployments share the channel with each other through an LBT with random backoff, in which the start time of clear channel assessment (CCA) procedure and the random backoff values are synchronized among nodes of the same deployment.

Abstract translation: 披露了共享频谱操作以在多个无线部署之间共享频谱。 第二层和第三层部署之间以及之间的协调程序包括使用由第二层传输的信标来清除对第三层用户占用的频谱的访问，以及使用分组先听（LBT）协议共享资源的多个第三层部署。 而不是每个节点的LBT协议。 发射第二层信标信号以提醒第三层用户他们的存在，这些用户在检测到时将在特定时间内离开特定频谱。 对于共享LBT协议，第三层部署通过具有随机退避的LBT相互共享信道，其中清除信道评估（CCA）过程的开始时间和随机退避值在同一部署的节点之间同步。

公开(公告)号：WO2015034890A3

公开(公告)日：2015-04-30

申请号：PCT/US2014053847

申请日：2014-09-03

Applicant: QUALCOMM INC

Inventor： YAVUZ MEHMET ,  SADEK AHMED KAMEL

IPC: H04W16/10 ,  H04W52/02 ,  H04W52/24 ,  H04W84/04

CPC classification number: H04W24/02 ,  H04L5/0073 ,  H04L5/1469 ,  H04W16/10 ,  H04W28/0236 ,  H04W52/0206 ,  H04W52/143 ,  H04W52/243 ,  H04W52/244 ,  H04W52/343 ,  H04W84/045 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144

Abstract: The disclosure relates to reducing Wi-Fi interference from small cells that provide cellular coverage in unlicensed bands. In particular, in response to determining that a small cell is substantially unloaded (e.g., has traffic below a threshold), the small cell may be switched to a reduced interference configuration. For example, the small cell may be switched to a low downlink configuration to reduce interference in a time domain and/or a low bandwidth configuration to reduce interference in a frequency domain. Alternatively (or additionally), the small cell and/or any other small cells that have traffic below the threshold may switch to the same frequency and/or channel number to concentrate all possible interference on the same frequency and/or channel number. Further still, the configuration may be switched in a power domain, where a transmit power associated with the small cell may be adapted based on cellular measurements in combination with Wi-Fi measurements.

Abstract translation: 本公开涉及减少来自在未授权频带中提供蜂窝覆盖的小小区的Wi-Fi干扰。 具体地，响应于确定小小区基本上被卸载（例如，具有低于阈值的业务），可以将小小区切换到降低干扰配置。 例如，小小区可以切换到低下行链路配置以减少时域和/或低带宽配置中的干扰，以减少频域中的干扰。 可选地（或附加地），具有低于阈值的业务的小小区和/或任何其他小小区可以切换到相同的频率和/或信道编号，以将所有可能的干扰集中在相同的频率和/或信道编号上。 此外，该配置可以在功率域中切换，其中可以基于与Wi-Fi测量结合的蜂窝测量来适配与小小区相关联的发射功率。

公开(公告)号：WO2014127068A3

公开(公告)日：2014-10-16

申请号：PCT/US2014016141

申请日：2014-02-12

Applicant: QUALCOMM INC

Inventor： SADEK AHMED KAMEL

IPC: H04W24/10 ,  H04W72/08 ,  H04W84/12

CPC classification number: H04W72/082 ,  H04J3/1694 ,  H04L1/0026 ,  H04L5/0073 ,  H04W24/10 ,  H04W28/18 ,  H04W72/02 ,  H04W84/12

Abstract: Methods and apparatus are provided for receiver measurement assisted access point control. A method operable by a Wi-Fi network entity includes signaling at least one trigger indication to at least one station served by the Wi-Fi network entity for interference measurements. The method includes receiving interference measurements taken based on the at least one trigger indication from the at least one station. The method includes tuning transmitter parameters based on the received interference measurements.

Abstract translation: 提供了用于接收机测量辅助接入点控制的方法和设备。 由Wi-Fi网络实体可操作的方法包括向由Wi-Fi网络实体服务的至少一个站发送至少一个触发指示以用于干扰测量。 该方法包括接收基于来自至少一个站的至少一个触发指示而获得的干扰测量。 该方法包括基于接收到的干扰测量结果来调谐发射机参数。

公开(公告)号：WO2015157039A2

公开(公告)日：2015-10-15

申请号：PCT/US2015023695

申请日：2015-03-31

Applicant: QUALCOMM INC

Inventor： STUPAR PATRICK ,  VALLIAPPAN NACHIAPPAN ,  SADEK AHMED KAMEL ,  GARAVAGLIA ANDREA ,  SCHENK ANDREAS MAXIMILLIAN ,  WERNER MARC WALTER

CPC classification number: H04W48/20 ,  H04L43/12 ,  H04W40/244 ,  H04W48/06 ,  H04W48/14 ,  H04W48/16 ,  H04W88/08

Abstract: The present disclosure presents a method and apparatus for identifying an access point (AP) for selection by an access terminal (AT). For example, the method may include receiving a probe request by one or more APs from an AT, wherein the probe request is broadcasted by the AT to the one or more APs, generating load information and Received Signal Strength Indicator (RSSI) values of the probe request at the one or more APs, identifying an AP of the one or more APs for selection by the AT, wherein the AP for selection by the AT is identified by the one or more APs based at least on the load information and RSSI values generated at the one or more APs, and transmitting information of an AP identified by the one or more APs to the AT. As such, an improved mechanism for selecting an access point may be achieved.

Abstract translation: 本公开提供了一种用于识别由接入终端（AT）选择的接入点（AP）的方法和装置。 例如，所述方法可以包括从AT接收一个或多个AP的探测请求，其中，所述探测请求由所述AT广播到所述一个或多个AP，生成负载信息和所述接收信号强度指示符（RSSI）值 在一个或多个AP处的探测请求，标识用于由AT选择的一个或多个AP的AP，其中由AT选择的AP至少基于负载信息和RSSI值由一个或多个AP识别 在所述一个或多个AP处产生，并且将由所述一个或多个AP标识的AP的信息发送到所述AT。 因此，可以实现用于选择接入点的改进的机制。