公开(公告)号：US09401742B2

公开(公告)日：2016-07-26

申请号：US14675493

申请日：2015-03-31

Applicant: QUALCOMM Incorporated

Inventor： Wei Zhang ,  Guang Xie ,  Hemanth Kumar Rayapati ,  Feng Lu ,  Nate Chizgi

IPC: H04B1/7117

CPC classification number: H04B1/7117 ,  H04B2201/70702 ,  H04B2201/709781

Abstract: Methods and apparatus for wireless communications are described. A method of wireless communications includes determining an energy for a first signal received at a first finger of a rake receiver after a reference signal is received at a second finger of the rake receiver, determining an energy for a second signal received at a third finger of a rake receiver before the reference signal is received at the second finger of the rake receiver, and selecting the first signal as a new reference signal when the energy of the first signal exceeds the energy of the second signal by a predefined threshold amount. In another aspect, a method includes assigning a signal received at a rake receiver to a finger of the rake receiver, and deassigning the finger if the signal has an energy level below a preselected lock threshold energy for a predefined time.

Abstract translation: 描述用于无线通信的方法和装置。 一种无线通信方法包括：在rake接收机的第二个手指接收到参考信号之后，确定在rake接收机的第一个手指接收的第一个信号的能量，确定在第三个手指处接收的第二个信号的能量 在前置雷达接收机的第二个手指接收参考信号之前的前置接收机，并且当第一信号的能量超过第二信号的能量预定的阈值量时，选择第一信号作为新的参考信号。 在另一方面，一种方法包括将在瑞克接收机处接收的信号分配给瑞克接收机的手指，以及如果信号在预定义时间内具有低于预先选择的锁定阈值能量的能级，则解除指配。

公开(公告)号：US20150163686A1

公开(公告)日：2015-06-11

申请号：US14288291

申请日：2014-05-27

Applicant: QUALCOMM Incorporated

Inventor： Wei Zhang ,  Sharif Ahsanul Matin ,  Feng Lu ,  Krishna Chaitanya Mukkera ,  Praveen Peruru

IPC: H04W24/08

CPC classification number: H04W24/08 ,  H04B1/7097 ,  H04B17/336 ,  H04W52/241

Abstract: Aspects of the disclosure are directed to estimating a signal to interference ratio. A signal energy estimate corresponding to a received data transmission is generated. A noise to interference ratio estimate corresponding to the received data transmission is generated. A bias, corresponding to the noise to interference ratio estimate, is subtracted from the signal energy estimate. A signal to interference ratio estimate is determined corresponding to the signal energy estimate less the bias, and the noise to interference ratio estimate.

Abstract translation: 本公开的方面涉及估计信号与干扰比。 生成对应于接收到的数据传输的信号能量估计。 产生与接收到的数据传输相对应的噪声干扰比估计值。 从信号能量估计中减去对应于噪声与干扰比估计的偏差。 信号与干扰比估计相对应的信号能量估计被确定为较小的偏差，以及噪声与干扰比的估计。

公开(公告)号：US11039458B2

公开(公告)日：2021-06-15

申请号：US15820342

申请日：2017-11-21

Applicant: QUALCOMM Incorporated

Inventor： Cheol Hee Park ,  Arvind Santhanam ,  Feng Lu ,  Taoufik Tani ,  Thomas Christol ,  Yunsong Mu ,  Yuanbo Wang ,  Gang Xiao ,  Abhijit Navalekar ,  Ashish Shankar Iyer ,  Subramanya Rao ,  Srinivasan Rajagopalan

IPC: H04W72/12 ,  H04W72/04 ,  H04W40/12 ,  H04W72/08 ,  H04W28/02 ,  H04W24/08 ,  H04W4/46

Abstract: A method, apparatus, and computer-readable medium at a transmitting user equipment (UE) in a distributed cellular vehicle-to-everything environment are disclosed to determine a schedule for transmissions on subchannels of multiple frequencies based on a set of UE-specific, dynamic, and performance related metrics or criteria. The metrics may include an estimated number of users on a subchannel, a best-bandwidth fit, channel loading conditions, transmission range, and quality requirements of an application, among others. Such a schedule for transmissions on subchannels of multiple frequencies may result in either an improved capacity utilization, an improved communication quality, or both.

公开(公告)号：US20200154440A1

公开(公告)日：2020-05-14

申请号：US16680252

申请日：2019-11-11

Applicant: QUALCOMM Incorporated

Inventor： Ralph Akram Gholmieh ,  Cheol Hee Park ,  Arvind Vardarajan Santhanam ,  Shailesh Patil ,  Ashish Shankar Iyer ,  Praveen Kumar Appani ,  Feng Lu

IPC: H04W72/04 ,  H04L5/16 ,  H04W24/08 ,  H04W28/02 ,  H04L1/18 ,  H04B17/318 ,  H04B17/336 ,  H04W4/40

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) and another device (e.g., another UE) may transmit messages on a shared channel accessed in a half-duplex manner (e.g., within a vehicle-to-everything (V2X) network). The UE and the other device may transmit messages on semi-persistently scheduled (SPS) resources. A message of the UE and a transmission of the other device may collide (e.g., be transmitted in the same subframe). The UE may employ muting and measuring, in which the UE may refrain from transmitting on a SPS resource and may detect the transmission of the other device. Upon detection of other transmissions, the UE may perform resource reselection. During resource selection or resource reselection, the UE may exclude an entire subframe of candidate resources if one of the candidate resources of the subframe is mapped to a resource associated with a transmission from another device.

公开(公告)号：US09706421B2

公开(公告)日：2017-07-11

申请号：US14288291

申请日：2014-05-27

Applicant: QUALCOMM Incorporated

Inventor： Wei Zhang ,  Sharif Ahsanul Matin ,  Feng Lu ,  Krishna Chaitanya Mukkera ,  Praveen Peruru

IPC: H04W24/08 ,  H04B17/336 ,  H04W52/24 ,  H04B1/7097

CPC classification number: H04W24/08 ,  H04B1/7097 ,  H04B17/336 ,  H04W52/241

Abstract: Aspects of the disclosure are directed to estimating a signal to interference ratio. A signal energy estimate corresponding to a received data transmission is generated. A noise to interference ratio estimate corresponding to the received data transmission is generated. A bias, corresponding to the noise to interference ratio estimate, is subtracted from the signal energy estimate. A signal to interference ratio estimate is determined corresponding to the signal energy estimate less the bias, and the noise to interference ratio estimate.

公开(公告)号：US20160119023A1

公开(公告)日：2016-04-28

申请号：US14675493

申请日：2015-03-31

Applicant: QUALCOMM Incorporated

Inventor： Wei Zhang ,  Guang Xie ,  Hemanth Kumar Rayapati ,  Feng Lu ,  Nate Chizgi

IPC: H04B1/7117

CPC classification number: H04B1/7117 ,  H04B2201/70702 ,  H04B2201/709781

Abstract: Methods and apparatus for wireless communications are described. A method of wireless communications includes determining an energy for a first signal received at a first finger of a rake receiver after a reference signal is received at a second finger of the rake receiver, determining an energy for a second signal received at a third finger of a rake receiver before the reference signal is received at the second finger of the rake receiver, and selecting the first signal as a new reference signal when the energy of the first signal exceeds the energy of the second signal by a predefined threshold amount. In another aspect, a method includes assigning a signal received at a rake receiver to a finger of the rake receiver, and deassigning the finger if the signal has an energy level below a preselected lock threshold energy for a predefined time.

Abstract translation: 描述用于无线通信的方法和装置。 一种无线通信方法包括：在rake接收机的第二个手指接收到参考信号之后，确定在rake接收机的第一个手指接收的第一个信号的能量，确定在第三个手指处接收的第二个信号的能量 在前置雷达接收机的第二个手指接收参考信号之前的前置接收机，并且当第一信号的能量超过第二信号的能量预定的阈值量时，选择第一信号作为新的参考信号。 在另一方面，一种方法包括将在瑞克接收机处接收的信号分配给瑞克接收机的手指，以及如果信号在预定义时间内具有低于预先选择的锁定阈值能量的能级，则解除指配。