公开(公告)号：US10568130B2

公开(公告)日：2020-02-18

申请号：US15707659

申请日：2017-09-18

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hung Ly ,  Haitong Sun ,  Hao Xu

IPC: H04W74/00 ,  H04L1/08 ,  H04L1/00 ,  H04W28/18 ,  H04W72/04 ,  H04W74/08 ,  H04L5/00

Abstract: A user equipment (UE) may perform a random access procedure to synchronize with a network for uplink and/or downlink communication. The UE may transmit a first type of random access transmission that includes transmitting a preamble or a second type of random access transmission that includes transmitting a preamble and a random access message. The second type may result in reduced delay but may have lesser SNR tolerance than the first type. In some aspects, the UE may determine whether to transmit the first type or the second type, and may transmit the first type or the second type in a random access channel portion of a slot. The random access channel portion of the slot may be occupied by portions of either the first type of random access transmission or the second type of random access transmission, thereby enabling flexible utilization of multiple types of random access procedure.

公开(公告)号：US10485023B2

公开(公告)日：2019-11-19

申请号：US15707442

申请日：2017-09-18

Applicant: QUALCOMM Incorporated

Inventor： Kambiz Azarian Yazdi ,  Haitong Sun ,  Tingfang Ji ,  Wanshi Chen ,  Hao Xu ,  Heechoon Lee ,  Hung Ly

IPC: H04W74/00 ,  H04W72/12 ,  H04W74/08

Abstract: Certain aspects of the present disclosure provide techniques for payload-less physical uplink measurement indication channel (PUMICH) design for uplink based mobility. According to certain aspects, a method of wireless communication by a base station (BS) is provided. The method generally includes selecting a first set of random access procedure (RACH) sequences from a second set of RACH sequences, wherein the second set of RACH sequences comprises a pruned set of RACH sequences, and wherein at least some of the first set of RACH sequences selected for a first user equipment (UE) is also available for selection for a second UE, and transmitting the selected first set of RACH sequences to a UE in response to a request from the UE.

公开(公告)号：US10389467B2

公开(公告)日：2019-08-20

申请号：US15588464

申请日：2017-05-05

Applicant: QUALCOMM Incorporated

Inventor： Hung Ly ,  Joseph Binamira Soriaga ,  Haitong Sun ,  Tingfang Ji

IPC: H04J11/00 ,  H04L5/00 ,  H04L1/00 ,  H04W74/08 ,  H04W48/10 ,  H04W48/12

Abstract: Aspects of the present disclosure provide for the transmission of a cell identifier of a serving cell to a user equipment (UE). A Physical Cell Identification Channel (PCICH) is defined for carrying the cell identifier of the serving cell within an uplink-based mobility framework. In some examples, the PCICH may be transmitted in response to a trigger event that requires the user equipment to have knowledge of the cell identifier. For example, the UE may require the cell identifier to demodulate signals received from the serving cell and facilitate transmission and/or reception of user data traffic with the serving cell.

公开(公告)号：US10383073B2

公开(公告)日：2019-08-13

申请号：US15708362

申请日：2017-09-19

Applicant: QUALCOMM Incorporated

Inventor： Kambiz Azarian Yazdi ,  Haitong Sun ,  Tingfang Ji ,  Hung Ly

IPC: H04W56/00 ,  H04W76/28 ,  H04W52/32 ,  H04W74/08 ,  H04W88/02

Abstract: Certain aspects of the present disclosure provide techniques for supporting UL-based mobility without DL zone signals. A DL zone signal may refer to a zone synchronization signal or a zone measurement reference signal. As described herein, a UE may perform certain operations upon power-up or RLF recovery, perform operations in each DRx cycle, and/or perform inter-zone handovers without relying on DL zone signals. Thus, aspects create a more user-centric environment and reduce and/or avoid transmission DL zone signals.

公开(公告)号：US20190097677A1

公开(公告)日：2019-03-28

申请号：US16143337

申请日：2018-09-26

Applicant: QUALCOMM Incorporated

Inventor： Pinar Sen ,  Seyong Park ,  Haitong Sun ,  Naga Bhushan ,  Tingfang Ji ,  Tugcan Aktas

IPC: H04B1/7103 ,  H04W72/04 ,  H04J13/18 ,  H04B1/7073

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may use a lower code rate by splitting a data stream into multiple data sub-streams. The UE may split the data stream to synchronously encode, modulate, and spread the data sub-streams at different layers. Then, the UE may superpose or combine the sub-streams together. The UE may scramble the combined data stream with a UE-specific scrambling code. In some examples, the UE may then apply a cyclic prefix to the combined data stream. The UE may then transmit the combined data stream to a base station. The receiving base station may use layer-wise matched filters and element-wise signal estimators (ESE) to obtain soft information such as log-likelihood ratios. Channel decoders may then determine estimated bits for each layer of each user of the combined data stream.

公开(公告)号：US10218608B2

公开(公告)日：2019-02-26

申请号：US15482510

申请日：2017-04-07

Applicant: QUALCOMM Incorporated

Inventor： Seyong Park ,  Wei Zeng ,  Haitong Sun ,  Joseph Binamira Soriaga ,  Tingfang Ji

IPC: H04L5/00 ,  G06F17/22 ,  H04B1/713 ,  H04B7/212 ,  H04J13/00 ,  H04J13/12 ,  H04L25/03 ,  H04L27/26 ,  H04W72/04 ,  H04L12/753

Abstract: Various additional and alternative aspects are described herein. In some aspects, the present disclosure provides a method of communication by an apparatus. The method includes selecting one or more resources for transmitting data of a first data stream based on an acyclic graph. The selected resources conform to the acyclic graph comprising data streams at odd levels of the acyclic graph and resources at even levels of the acyclic graph. The acyclic graph includes edges between each level of the acyclic graph. The edges connect the resources allocated to each data stream. The method further includes transmitting the data of the first data stream on the selected one or more resources.

公开(公告)号：US20180324720A1

公开(公告)日：2018-11-08

申请号：US15855623

申请日：2017-12-27

Applicant: QUALCOMM Incorporated

Inventor： Hung Ly ,  Tao Luo ,  Peter Gaal ,  Haitong Sun ,  Heechoon Lee

IPC: H04W56/00 ,  H04W72/00 ,  H04L5/00

CPC classification number: H04W56/001 ,  H04L1/0041 ,  H04L1/0045 ,  H04L5/005 ,  H04L5/0051 ,  H04L5/0053 ,  H04W72/005

Abstract: Systems and methods herein create unified synchronization to support various network deployments in which multiple UE states (e.g., idle, connected, etc) and multiple synchronization signal periodicities (5 ms, 20 ms, etc.) and standalone/non-standalone networks may exist. Unified synchronization may be achieved at least by designating transmit frames as being even or odd. With such a designation, when a network transmits synchronization signals (SS) comprising the most significant bits (MSB)s of a frame's system frame number (SFN), a UE of any state may receive the SS according to any periodicity and blind decode the SFN's least significant bits (LSBs) with less complexity as compared to traditional systems and methods due at least to the even or odd frame designations.

公开(公告)号：US20180092125A1

公开(公告)日：2018-03-29

申请号：US15462669

申请日：2017-03-17

Applicant: QUALCOMM Incorporated

Inventor： Haitong Sun ,  Jay Kumar Sundararajan ,  Joseph Binamira Soriaga ,  Wanshi Chen ,  Peter Gaal ,  Hao Xu ,  Tingfang Ji ,  Wei Zeng

IPC: H04W74/02

CPC classification number: H04W74/02 ,  H04W72/0413 ,  H04W72/1294 ,  H04W74/004

Abstract: Wireless communications systems and methods related to performing hybrid grant-free and grant-based uplink (UL) data transmission. A wireless communication device dynamically selects between a grant-free mode and a grant-based mode based on at least a transmission configuration. The wireless communication device sends a first data packet in the grant-free mode, based on the selecting, using a first UL resource. The wireless communication device sends a second data packet in the grant-based mode, based on the selecting, using a second UL resource allocated to the wireless communication device. Other aspects, embodiments, and features are also claimed and described.

公开(公告)号：US20180062781A1

公开(公告)日：2018-03-01

申请号：US15588464

申请日：2017-05-05

Applicant: QUALCOMM Incorporated

Inventor： Hung Ly ,  Joseph Binamira Soriaga ,  Haitong Sun ,  Tingfang Ji

IPC: H04J11/00 ,  H04L5/00 ,  H04L1/00 ,  H04W74/08

CPC classification number: H04J11/0079 ,  H04J11/0073 ,  H04J11/0076 ,  H04L1/0041 ,  H04L5/0053 ,  H04W48/10 ,  H04W48/12 ,  H04W74/0833

Abstract: Aspects of the present disclosure provide for the transmission of a cell identifier of a serving cell to a user equipment (UE). A Physical Cell Identification Channel (PCICH) is defined for carrying the cell identifier of the serving cell within an uplink-based mobility framework. In some examples, the PCICH may be transmitted in response to a trigger event that requires the user equipment to have knowledge of the cell identifier. For example, the UE may require the cell identifier to demodulate signals received from the serving cell and facilitate transmission and/or reception of user data traffic with the serving cell.

公开(公告)号：US20140128080A1

公开(公告)日：2014-05-08

申请号：US14023142

申请日：2013-09-10

Applicant: QUALCOMM Incorporated

Inventor： Siddharth Mohan ,  Rohit Kapoor ,  Haitong Sun ,  Sharad Deepak Sambhwani

IPC: H04W36/30

CPC classification number: H04W36/0061

Abstract: Aspects related to pre-configuring for a serving cell change to neighbor cells are described. In one example, a user equipment (UE) may camp on a first cell. The UE may receive at least one communication including target cell pre-configuration information for one or more neighbor cells eligible for pre-configuration. The UE may determine that the first cell is no longer providing adequate service and identify a target cell, which may be one of the one or more neighbor cells, but is not part of an active set for the UE. The UE may transmit a message (e.g., Event 1d) requesting a serving cell change to the target cell. The UE may configure to receive service from the target cell based on the pre-configuration information associated with the target cell. The UE may receive an indication to perform the serving cell change and perform the serving cell change.

Abstract translation: 描述了与服务小区的预配置有关的方面向相邻小区的改变。 在一个示例中，用户设备（UE）可以驻留在第一小区上。 UE可以接收包括用于一个或多个符合预配置的相邻小区的目标小区预配置信息的至少一个通信。 UE可以确定第一小区不再提供足够的服务并且识别目标小区，目标小区可以是一个或多个相邻小区中的一个，但不是UE的活动集的一部分。 UE可以向目标小区发送请求服务小区改变的消息（例如，事件1d）。 UE可以被配置为基于与目标小区相关联的预配置信息从目标小区接收服务。 UE可以接收执行服务小区改变的指示并执行服务小区改变。