公开(公告)号：US20160381589A1

公开(公告)日：2016-12-29

申请号：US15157612

申请日：2016-05-18

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Siddhartha Mallik ,  Srinivas Yerramalli ,  Taesang Yoo ,  Tao Luo

IPC: H04W24/10 ,  H04W72/08 ,  H04L12/24 ,  H04W24/08 ,  H04L5/00

CPC classification number: H04W24/10 ,  H04L5/001 ,  H04L5/0048 ,  H04L5/0053 ,  H04L27/0006 ,  H04L41/08 ,  H04W24/08 ,  H04W72/085

Abstract: Measurement and demodulation may be impacted by varying transmit power due to varying numbers of carriers in a shared radio frequency (RF) spectrum band. Methods, systems, and devices are described for wireless communication. One method includes monitoring at least one carrier of a RF spectrum band for a first reference signal transmitted in a number of listen-before-talk (LBT) radio frames from a plurality of LBT radio frames associated with the plurality of carriers, where the plurality of LBT radio frames are received at the user equipment (UE) in different sets of at least one carrier of the RF spectrum band at different times, and where the first reference signal is associated with a first fixed transmit power; receiving a plurality of instances of the first reference signal; measuring the plurality of instances; and determining a cell measurement based at least in part on the measurements of the plurality of instances.

Abstract translation: 由于共享射频（RF）频谱带中的载波数量变化，可能会影响发射功率的测量和解调。 描述了用于无线通信的方法，系统和设备。 一种方法包括监测在与多个载波相关联的多个LBT无线电帧中在多个听即弃（LBT）无线电帧中发送的第一参考信号的RF频谱带的至少一个载波，其中多个 LBT无线电帧在不同时间在RF频谱带的至少一个载波的不同组中在用户设备（UE）处接收，并且其中第一参考信号与第一固定发射功率相关联; 接收所述第一参考信号的多个实例; 测量多个实例; 以及至少部分地基于所述多个实例的测量来确定小区测量。

公开(公告)号：US20160234835A1

公开(公告)日：2016-08-11

申请号：US15019767

申请日：2016-02-09

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Aleksandar Damnjanovic ,  Marco Papaleo ,  Rahul Malik ,  Peter Gaal

IPC: H04W72/04 ,  H04L1/00 ,  H04W16/14 ,  H04W74/08

CPC classification number: H04L1/0009 ,  H04L1/1812 ,  H04W16/14 ,  H04W72/1215 ,  H04W74/0808 ,  H04W88/06

Abstract: Techniques are described for wireless communication. A first method includes sensing an indication of first radio access technology (RAT) communications occupying a shared radio frequency spectrum band; and configuring, in response to the sensing, at least one parameter of a second RAT used by a device to contend for access to the band. A second method includes randomly selecting a number from a range of numbers extending between a lower bound and an upper bound; contending for access to a shared radio frequency spectrum band by performing an extended clear channel assessment (ECCA) procedure over a plurality of CCA slots, the plurality of CCA slots including a first number of CCA slots equal to the upper bound; and winning contention for access to the band after determining, while performing the ECCA procedure, that the band is available for a second number of CCA slots equal to the randomly selected number.

Abstract translation: 技术描述为无线通信。 第一种方法包括感测占用共享射频频带的第一无线电接入技术（RAT）通信的指示; 以及响应于所述感测，配置设备使用的第二RAT的至少一个参数来竞争接入所述频带。 第二种方法包括从在下限和上限之间延伸的数字范围中随机选择一个数字; 竞争通过在多个CCA时隙上执行扩展清除信道评估（ECCA）过程来访问共享射频频带，所述多个CCA时隙包括等于上限的第一数量的CCA时隙; 并且在执行ECCA过程之后确定该频带可用于与随机选择的数字相等的第二数量的CCA时隙可用于获得对该频带的访问的争用。

公开(公告)号：US20160112169A1

公开(公告)日：2016-04-21

申请号：US14864056

申请日：2015-09-24

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Durga Prasad Malladi ,  Yongbin Wei

IPC: H04L5/00 ,  H04W24/08 ,  H04L1/18 ,  H04W72/04

CPC classification number: H04L5/0048 ,  H04L1/1822 ,  H04L5/001 ,  H04L5/0035 ,  H04L5/005 ,  H04L27/0006 ,  H04W24/08 ,  H04W72/042

Abstract: Techniques are described for wireless communication. A first method includes identifying a configuration of a downlink subframe in a shared radio frequency spectrum band, and generating, based at least in part on the configuration of the downlink subframe, a cell-specific reference signal (CRS) for the downlink subframe. A second method includes dynamically determining a presence of a CRS in a downlink subframe in a shared radio frequency spectrum band, and performing at least one operation during the downlink subframe in response to the dynamic determination.

Abstract translation: 技术描述为无线通信。 第一方法包括识别共享射频频带中的下行链路子帧的配置，并且至少部分地基于下行链路子帧的配置来生成用于下行链路子帧的小区特定参考信号（CRS）。 第二种方法包括动态地确定共享射频频带中的下行链路子帧中的CRS的存在，以及响应于动态确定在下行链路子帧期间执行至少一个操作。

公开(公告)号：US20160037352A1

公开(公告)日：2016-02-04

申请号：US14807024

申请日：2015-07-23

Applicant: QUALCOMM Incorporated

Inventor： Yongbin Wei ,  Durga Prasad Malladi ,  Tao Luo ,  Srinivas Yerramalli ,  Aleksandar Damnjanovic ,  Hao Xu ,  Peter Gaal ,  Wanshi Chen

IPC: H04W16/14 ,  H04L27/26 ,  H04W74/08 ,  H04W72/04

CPC classification number: H04W72/0453 ,  H04L27/2601 ,  H04W72/0413 ,  H04W72/1268 ,  H04W74/0833

Abstract: Techniques for wireless communications over a shared radio frequency spectrum band, may include techniques for transmitting uplink data transmissions using allocated uplink resources. Allocated uplink resources may include an uplink channel comprising a number of allocated interlaces of resource blocks (RBs) for use by a user equipment (UE). An incoming data stream may be processed and data separated into each of the allocated interlaces of RBs for the UE. Such separation may be through demultiplexing the data stream to obtain data for the allocated interlaces of RBs. The demultiplexed data may be mapped onto associated resource elements associated with the allocated interlaces of RBs, and transmitted. Different types of uplink channels, such as a physical uplink control channel (PUCCH), physical uplink shared channel (PUSCH) and/or a physical random access channel (PRACH) may be allocated to interlaces of RBs in one or more subframes of a transmitted radio frame.

Abstract translation: 用于通过共享射频频带的无线通信的技术可以包括使用所分配的上行链路资源来发送上行链路数据传输的技术。 分配的上行链路资源可以包括由用户设备（UE）使用的资源块（RB）的分配数量的多个的上行链路信道。 可以处理输入数据流并将数据分离成每个被分配的用于UE的RB的交织。 这种分离可以通过解复用数据流来获得所分配的RB的交织的数据。 解复用的数据可以被映射到与所分配的RB的交织相关联的相关联的资源元素上，并被发送。 不同类型的上行链路信道，例如物理上行链路控制信道（PUCCH），物理上行链路共享信道（PUSCH）和/或物理随机接入信道（PRACH）可以被分配给所传输的一个或多个子帧中的交织 无线电框架。

公开(公告)号：US20150110066A1

公开(公告)日：2015-04-23

申请号：US14518744

申请日：2014-10-20

Applicant: QUALCOMM Incorporated

Inventor： Peter Gaal ,  Naga Bhushan ,  Wanshi Chen ,  Hao Xu ,  Srinivas Yerramalli ,  Aleksandar Damnjanovic ,  Tao Luo ,  Durga Prasad Malladi ,  Yongbin Wei ,  Tingfang Ji

IPC: H04L5/00 ,  H04W72/04

CPC classification number: H04W72/0453 ,  H04L27/0006 ,  H04W16/14 ,  H04W72/1226 ,  H04W74/0808

Abstract: Design of channel usage beacon signals (CUBS) in cooperative networks is disclosed. After detecting a clear channel assessment (CCA), a transmitter selects a configuration of a CUBS associated with the transmitter based on the CCA opportunity assigned to the network. The configuration of the CUBS associated with the transmitter may include a set of frequency subcarriers for CUBS transmissions. The transmitter transmits the CUBS according to transmission characteristics based on the CCA opportunity. In additional aspects, randomization may be introduced into the frequency subcarrier allocations of CUBS configurations where the transmitter receives assignment of virtual frequency subcarriers for CUBS transmissions and maps the virtual subcarrier to physical frequency subcarriers for CUBS transmission. Additional aspects allow for pattern offset values to be determined independently from the transmitter cell identifier. In such aspects, the assigned pattern offsets may be cell identifier-independent, while others may be cell identifier-dependent.

Abstract translation: 披露了合作网络中信道使用信标信号（CUBS）的设计。 在检测到清晰的信道评估（CCA）之后，发射机基于分配给网络的CCA机会选择与发射机相关联的CUBS的配置。 与发射机相关联的CUBS的配置可以包括用于CUBS传输的一组频率子载波。 发射机根据CCA机会的传输特性发射CUBS。 在另外的方面，可以将随机化引入到CUBS配置的频率子载波分配中，其中发射机接收CUBS传输的虚拟频率子载波的分配，并将虚拟子载波映射到用于CUBS传输的物理频率子载波。 附加方面允许独立于发射机小区标识符来确定模式偏移值。 在这些方面，分配的模式偏移可以是与小区标识符无关的，而另一些可以是小区标识符相关的。

公开(公告)号：US20150103715A1

公开(公告)日：2015-04-16

申请号：US14494956

申请日：2014-09-24

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Hao Xu ,  Peter Gaal ,  Tao Luo ,  Srinivas Yerramalli ,  Tingfang Ji ,  Aleksandar Damnjanovic ,  Yongbin Wei ,  Naga Bhushan ,  Durga Prasad Malladi ,  Ravi Teja Sukhavasi

IPC: H04W72/04 ,  H04W52/02 ,  H04L29/06 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/0082 ,  H04L5/0091 ,  H04L69/14 ,  H04W16/14 ,  H04W52/0209 ,  H04W74/02 ,  H04W76/15 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/26

Abstract: Methods, apparatuses, systems, and devices are described for wireless communication. In one method, a control format indicator value for a frame may be received over a physical carrier in a shared spectrum. Based on the control format indicator value, a number of subframes of the frame to be used by a base station for downlink transmissions over the physical carrier may be determined. The control format indicator value may indicate an end of transmission, if data is to be transmitted during the frame, a number of subframes to be used for transmission, or whether the current subframe is the final subframe used for transmission. In some cases, a user equipment (UE) may use the control format indicator value to determine a sleep schedule. Further, ACK/NACK transmissions by a UE may be scheduled based on the control format indicator value.

Abstract translation: 描述了用于无线通信的方法，设备，系统和设备。 在一种方法中，可以通过共享频谱中的物理载波来接收帧的控制格式指示符值。 基于控制格式指示符值，可以确定要由基站用于物理载波上的下行链路传输的帧的多个子帧。 控制格式指示符值可以指示传输的结束，如果要在帧期间发送数据，要用于发送的子帧的数量，或者当前子帧是否是用于传输的最后的子帧。 在一些情况下，用户设备（UE）可以使用控制格式指示符值来确定睡眠调度。 此外，可以基于控制格式指示符值来调度UE的ACK / NACK传输。

公开(公告)号：US20150055588A1

公开(公告)日：2015-02-26

申请号：US14464409

申请日：2014-08-20

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Wanshi Chen ,  Naga Bhushan

IPC: H04W72/04

CPC classification number: H04W72/0446 ,  H04L1/00 ,  H04L5/0007 ,  H04L5/005 ,  H04L5/0073

Abstract: Channel state information (CSI) and acknowledgement (ACK) reporting enhancements in Long Term Evolution (LTE)/LTE-Advanced (LTE-A) enabling communications over an unlicensed spectrum are disclosed. For example, ACK/NAK may include unlicensed spectrum interference information, such as WIFI interference. Additionally, in anticipation of a future downlink transmission, UEs may report WiFI interference to base stations absent a current downlink transmission. Also, CSI-RS and/or IMR resources may be staggered across subframes and/or within slots of subframes. Further, CSI reporting may include separate reports for CSI-RS resources that experience unlicensed spectrum interference and interference free CSI-RS resources. Still further, CSI reports may include a request to the base station to switch the current channel or band. Finally, inter-RAT ACK and CSI reporting may be provided on a second unlicensed spectrum band, such as a WIFI band, for a first unlicensed spectrum band, such as an LTE/LTE-A unlicensed band.

Abstract translation: 公开了通过无许可频谱进行通信的长期演进（LTE）/ LTE-Advanced（LTE-A）中的信道状态信息（CSI）和确认（ACK）报告增强。 例如，ACK / NAK可以包括诸如WIFI干扰的未许可的频谱干扰信息。 另外，在将来的下行链路传输的预期中，UE可以向没有当前下行链路传输的基站报告WiFI干扰。 此外，CSI-RS和/或IMR资源可以在子帧和/或子帧的时隙内交错。 此外，CSI报告可以包括经历无许可频谱干扰和无干扰CSI-RS资源的CSI-RS资源的单独报告。 此外，CSI报告可以包括向基站请求切换当前信道或频带。 最后，针对第一非许可频谱带（例如LTE / LTE-A无许可频带），可以在诸如WIFI频带的第二非许可频谱频带上提供RAT间ACK ACK和CSI报告。

公开(公告)号：US12295012B2

公开(公告)日：2025-05-06

申请号：US18433297

申请日：2024-02-05

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Zhifei Fan ,  Kapil Bhattad ,  Jing Sun ,  Tamer Kadous ,  Srinivas Yerramalli

IPC: H04W72/23 ,  H04L1/1607 ,  H04L1/1812 ,  H04L1/1822 ,  H04L1/1829 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) and a base station may communicate in an unlicensed spectrum (e.g., a shared radio frequency spectrum band). As such, the UE may determine a codebook size for transmitting hybrid access request (HARQ) acknowledgement (ACK) feedback with respect to the unlicensed spectrum. Accordingly, the UE may base the HARQ ACK codebook size on a number of HARQ processes with which the UE has been configured. Additionally or alternatively, the UE may base the HARQ ACK codebook size on a number and/or duration of downlink channel monitoring occasions indicated by the base station. In some cases, the UE may base the HARQ ACK codebook size on a combination of the techniques described herein.

公开(公告)号：US20250138132A1

公开(公告)日：2025-05-01

申请号：US18691347

申请日：2022-10-20

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Srinivas Yerramalli ,  Mukesh Kumar

IPC: G01S5/02 ,  H04W64/00

Abstract: This disclosure provides systems, methods, and devices for wireless communication that supports an assistance indicator, such as a UAI message, that includes position assistance information. In a first aspect, a method of wireless communication includes generating, by a user equipment (UE), an assistance indicator including position assistance information. The method further includes transmitting the assistance indicator to a network entity. Other aspects and features are also claimed and described.

公开(公告)号：US12238617B2

公开(公告)日：2025-02-25

申请号：US18336817

申请日：2023-06-16

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Mohammed Ali Mohammed Hirzallah ,  Roohollah Amiri ,  Marwen Zorgui ,  Rajat Prakash ,  Xiaoxia Zhang ,  Taesang Yoo

IPC: H04W4/029 ,  G01S5/02 ,  H04W24/08

Abstract: In an aspect, a network component (e.g., BS, server, etc.) obtains measurement information associated with uplink signal(s) from UE(s), with the uplink signal(s) having reciprocity with one or more downlink beams of wireless node(s) (e.g., TRP, reference UE, etc.). The network component determines (e.g., generates or refines) a measurement (e.g., RFFP-P) model based on the measurement information. The network component provides the measurement (e.g., RFFP-P) model to a target UE. The target UE receives at least one signal (e.g., PRS) on the one or more downlink beams from the wireless node(s). The target UE processes the at least one signal (e.g., predicts target UE location) based at least in part on the measurement (e.g., RFFP-P) model.