公开(公告)号：US20190230597A1

公开(公告)日：2019-07-25

申请号：US16253211

申请日：2019-01-21

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Peter Gaal ,  Yi Huang ,  Wei Yang ,  Renqiu Wang

IPC: H04W52/14 ,  H04W52/32 ,  H04W52/22

Abstract: A user equipment (UE) may apply transmit power control (TPC) commands and transmit uplink information based on received downlink control information (DCI). A UE may receive multiple DCI messages including multiple TPC commands for an uplink transmission. The power level for the uplink transmission may be adjusted based on the combination of TPC commands. For example, the TPC commands may be considered together (e.g., added, averaged, etc.), the latest TPC command may be used, etc. In some cases, a change in TPC command for an uplink transmission (e.g., from a previous TPC command for the uplink transmission indicated via other DCI) may indicate a change in one or more transmission attributes for the uplink transmission. In some cases, a UE may receive a grant for a prioritized transmission, resulting in discontinuous transmission (DTX) of a previous transmission, which may result in TPC modification by the UE.

公开(公告)号：US20190222399A1

公开(公告)日：2019-07-18

申请号：US16243858

申请日：2019-01-09

Applicant: QUALCOMM Incorporated

Inventor： Yi Huang ,  Wanshi Chen ,  Peter Gaal ,  Renqiu Wang ,  Wei Yang

IPC: H04L5/00 ,  H04W72/12 ,  H04W72/14 ,  H04L5/26

CPC classification number: H04L5/0057 ,  H04L5/0007 ,  H04L5/0042 ,  H04L5/0051 ,  H04L5/0055 ,  H04L5/0094 ,  H04L5/26 ,  H04W72/1268 ,  H04W72/14

Abstract: Methods, systems, and devices for wireless communications are described for controlling multiplexing of a reference signal on an uplink shared channel (UL-SCH). In an implementation, a user equipment (UE) may time division multiplex (TDM) a demodulation reference signal (DMRS) with other signaling across symbol periods of one or more allocated resource blocks. The UE may map the DMRS to resource elements of one or more symbol periods within the allocated resource blocks. The UE may then map uplink control information (UCI) to one or more symbol periods different than the symbol periods of the DMRS mapping. In some cases, the DMRS, UCI, or both may be frequency interleaved with UL-SCH data for the allocated resource blocks. The UE may generate and transmit an uplink waveform for transmission within the allocated resources of the uplink shared channel.

公开(公告)号：US20190150169A1

公开(公告)日：2019-05-16

申请号：US16188912

申请日：2018-11-13

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Yi Huang ,  Wanshi Chen ,  Xiao Feng Wang ,  Peter Gaal ,  Tao Luo ,  Sony Akkarakaran

IPC: H04W72/12 ,  H04L5/00 ,  H04W16/14 ,  H04W76/27 ,  H04W72/04 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described. In some systems (e.g., new radio (NR) wireless communications systems), a base station may serve a large number of user equipment (UEs). The base station may allocate uplink control channel resources to the UEs using a limited number of bits by implementing explicit and implicit resource mapping. Explicit mapping may involve determining certain indicated resources based on a received set of bits, and implicit mapping may involve determining a resource indication from a characteristic of a transmission (e.g., a starting control channel element (CCE) for a downlink control information (DCI) transmission). A UE may determine an allocated uplink control channel resource for transmission based on the combination of the two types of indications. Additionally, the UE may implement one or more techniques for handling colliding resource allocations (e.g., acknowledgement (ACK), channel quality indicator (CQI), or scheduling request (SR) resource allocations).

公开(公告)号：US10256955B2

公开(公告)日：2019-04-09

申请号：US15247355

申请日：2016-08-25

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Peter Gaal ,  Hao Xu ,  Wanshi Chen ,  Yongbin Wei ,  Xiaofeng Wang ,  Renqiu Wang ,  Seyed Ali Akbar Fakoorian ,  Madhavan Srinivasan Vajapeyam ,  Alberto Rico Alvarino ,  Juan Montojo

IPC: H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04W56/00 ,  H04J11/00

Abstract: Aspects of the present disclosure provide techniques for design of synchronization signals for narrowband operation, which can be used for stand-alone/in-band/guard-band deployment. An example method is provided for operations which may be performed by a base station (BS). The example method generally includes generating a primary synchronization signal (PSS) utilizing a first code sequence and a cover code applied to the first code sequence over a first number of symbols within one or more subframes, generating a secondary synchronization signal (SSS) based on a second code sequence over a second number of symbols within one or more subframes, and transmitting the PSS and the SSS in the first and second subframes to a first type of a user equipment (UE) that communicates on one or more narrowband regions of wider system bandwidth.

公开(公告)号：US10205618B2

公开(公告)日：2019-02-12

申请号：US15851180

申请日：2017-12-21

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Jing Jiang ,  Yi Huang ,  Wei Zeng ,  Wanshi Chen ,  Tingfang Ji

IPC: H04B7/06 ,  H04L27/26 ,  H04B7/0404 ,  H04B7/0456 ,  H04J13/12

Abstract: A configurable new radio (NR) uplink (UL) transmission may use transmit diversity. A user equipment (UE) may identify an uplink transmission of at least one stream as using one of cyclic prefix orthogonal frequency division multiplexing or discrete Fourier transform spread orthogonal frequency division multiplexing. The UE may apply a precoding matrix to the at least one identified stream. The precoding matrix changes over time. The precoding matrix may change based on closed loop feedback, a precoding cycling pattern, and/or a code division multiplexing group. The UE may transmit the at least one identified stream from multiple antennas according to the applied precoding matrix.

公开(公告)号：US20190045499A1

公开(公告)日：2019-02-07

申请号：US16049082

申请日：2018-07-30

Applicant: QUALCOMM Incorporated

Inventor： Yi Huang ,  Juan Montojo ,  Peter Gaal ,  Wanshi Chen ,  Tao Luo ,  Seyong Park ,  Renqiu Wang

IPC: H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described for defining uplink control channel resources and mapping uplink control channel resources to a user equipment (UE). Approaches described herein include identifying a physical uplink control channel (PUCCH) format to be used for a subsequent PUCCH transmission by the UE, identifying a PUCCH resource mapping rule based at least in part on the PUCCH format, and determining an uplink transmission resource to be used for the subsequent PUCCH transmission based at least in part on the PUCCH resource mapping rule. The PUCCH resource mapping rule may be explicit and/or implicit.

公开(公告)号：US20190037560A1

公开(公告)日：2019-01-31

申请号：US16047764

申请日：2018-07-27

Applicant: QUALCOMM Incorporated

Inventor： Yi Huang ,  Wanshi Chen ,  Seyedkianoush Hosseini ,  Peter Gaal ,  Renqiu Wang ,  Seyong Park

IPC: H04W72/04 ,  H04W52/36 ,  H04W52/32 ,  H04W72/12

Abstract: Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for a power headroom report for multiple radio access technologies (RATs). A user equipment (UE) may support multiple RATs that correspond to different transmission time intervals (TTIs). A UE may determine a reporting schedule for power headroom reports (PHRs) for a first RAT and a second schedule for PHRs for a second RAT. The UE may generate a PHR for the first RAT and a companion PHR for the second RAT, and may transmit the PHR and companion PHR based at least in part on the first PHR schedule. In some examples, the UE may receive a PHR type from the base station, and may determine a joint PHR based on the type. The UE may determine a joint PHR schedule based on a granularity of supported RATs.

公开(公告)号：US20190036582A1

公开(公告)日：2019-01-31

申请号：US16046840

申请日：2018-07-26

Applicant: QUALCOMM Incorporated

Inventor： Seyong Park ,  Yi Huang ,  Renqiu Wang ,  Peter Gaal ,  Wanshi Chen ,  Tao Luo

IPC: H04B7/06 ,  H04W72/04

Abstract: Transmit diversity schemes may be used for sending sequence-based signals over multiple antennas. For example, a user equipment (UE) may determine an uplink sequence to be transmitted to a base station using multiple antennas. The UE may utilize a transmit diversity scheme for the multiple-antenna transmission of the uplink sequence, where the transmit diversity scheme utilized may be based on a number of symbol periods during which the sequence is transmitted. In accordance with the transmit diversity scheme, the UE may use multiple transmit antennas to transmit different sequences from respective antennas. In other examples, the UE may transmit the uplink sequence using different time or frequency resources. Additionally, the UE may use some combination of different transmit diversity schemes for sequence-based signals. In some aspects, the base station may provide an indication of the transmit diversity scheme that the UE is to use for transmitting the uplink sequence.

公开(公告)号：US10154481B2

公开(公告)日：2018-12-11

申请号：US15812994

申请日：2017-11-14

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Tao Luo ,  Wanshi Chen ,  Hao Xu ,  Peter Gaal ,  Yi Huang ,  Renqiu Wang ,  Seyong Park

IPC: H04J3/00 ,  H04W72/04 ,  H04L5/00 ,  H04L5/14 ,  H04B7/212

Abstract: Aspects of the disclosure relate to wireless communication systems configured to provide techniques for strategically placing a sounding reference signal (SRS) within a slot to improve the decoding timeline. Aspects of the disclosure further relate to wireless communication systems configured to optimize the physical downlink control channel (PDCCH) search space within a slot to improve the decoding timeline. Features may also include placing the SRS near the end of the slot, such as after the uplink user data traffic and the corresponding uplink demodulation reference signal (DMRS). In addition, features may also include identifying the PDCCH search space within the slot based on at least a slot index of the slot. Other aspects, embodiments, and features are also claimed and described.

公开(公告)号：US10090880B2

公开(公告)日：2018-10-02

申请号：US15279991

申请日：2016-09-29

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Xiao Feng Wang ,  Wanshi Chen ,  Peter Gaal ,  Juan Montojo ,  Alberto Rico Alvarino ,  Seyed Ali Akbar Fakoorian

IPC: H04L5/00 ,  H04B1/7143 ,  H04W74/08 ,  H04W74/00 ,  H04L27/26 ,  H04W4/70

Abstract: Due to the limited dimension of a NB that may be used by multiple users, as well as possible large coverage areas, timing offset estimation may be outside of NCP. The inaccuracy in the timing estimate can be improved by using more than one tone hopping distance for PRACH. An apparatus may then transmit a first and second tone of the PRACH at a first hopping distance from the first tone. The apparatus may then transmit a third tone of the PRACH and a fourth tone of the PRACH at a second hopping distance from the third tone. The second hopping distance may be greater than first hopping distance. The apparatus may also transmit an additional tone of the PRACH using a random hopping distance. A receiving apparatus may receive the transmitted PRACH and determine a phase estimation based on the sets of tones having different hopping distances.