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公开(公告)号：US10917888B2
公开(公告)日：2021-02-09
申请号：US16593800
申请日：2019-10-04
Applicant: QUALCOMM Incorporated
Inventor： Chih Ping Li , Chong Li , Jing Jiang , Wanshi Chen , Hao Xu , Haitong Sun
Abstract: Transmission time interval (TTI) bundling for ultra-reliable low-latency communication (URLLC) uplink and downlink transmissions is discussed in which a base station or user equipments (UEs) determine conditions for one or more served UEs that would indicate enabling TTI bundling for data and/or control transmissions. The serving base station transmits an enablement signal signifying that TTI bundling will be performed for data and/or control transmissions. The enablement signal may include a bundle length for the transmission bundle. The data or control signal packets may then be repeatedly transmitted to the UEs a number of times corresponding to the bundle length.
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公开(公告)号：US10903920B2
公开(公告)日：2021-01-26
申请号：US15956978
申请日：2018-04-19
Applicant: QUALCOMM Incorporated
Inventor： Kambiz Azarian Yazdi , Haitong Sun , Peter Pui Lok Ang , Jay Kumar Sundararajan
IPC: H04B17/345 , H04W72/04 , H04L5/00 , H04W24/08 , H04W72/12
Abstract: Aspects described herein relate to measuring cross-link interference in wireless communications. A portion of a slot that includes a downlink reference signal transmitted by a base station and an uplink reference signal transmitted by a user equipment (UE) can be determined, where the uplink reference signal and the downlink reference signal at least partially overlap within the portion of the slot. The downlink reference signal can be received from the base station and the uplink reference signal can be received from the UE in the portion of the slot. Cross-link interference between the downlink reference signal and the uplink reference signal can be measured.
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公开(公告)号：US10694527B2
公开(公告)日：2020-06-23
申请号：US15667201
申请日：2017-08-02
Applicant: QUALCOMM Incorporated
Inventor： Hao Xu , Peter Gaal , Jing Jiang , Haitong Sun , Naga Bhushan , Tingfang Ji , Wei Zeng , Shimman Arvind Patel
IPC: H04W72/08 , H04W72/04 , H04L12/851 , H04L12/911 , H04W28/02
Abstract: Certain aspects of the present disclosure provide techniques for co-existence of reliable low-latency and other services in a wireless network. According to certain aspects, a method of wireless communication by a base station is provided. The method generally includes reserving a first region of a set of resources to a first user for at least a first uplink transmission related to a first type of service, receiving the first uplink transmission in the reserved first region, and dynamically assigning resources in a second region of the set of resources for at least a second uplink transmission related to the first type of service.
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公开(公告)号：US20200084737A1
公开(公告)日：2020-03-12
申请号：US16680211
申请日：2019-11-11
Applicant: QUALCOMM Incorporated
Inventor： Heechoon Lee , Hung Ly , Tingfang Ji , Haitong Sun , Wanshi Chen , Peter Gaal , Hao Xu
Abstract: Split synchronization signal configuration for unified synchronization channels and techniques for indicating communication block boundaries in wireless communication systems that use a unified synchronization signal configuration that may be used in different communication modes are described. The disclosed split synchronization signal configuration allows the same synchronization signal configuration to be used in different communication modes (or numerologies) that operate on different frequencies. The boundary indication techniques of embodiments allow efficient indication of the beginning of a communication block (such as a frame, subframe, or slot) relative to the beginning of a unified synchronization signal configuration.
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公开(公告)号：US10470142B2
公开(公告)日：2019-11-05
申请号：US15589683
申请日：2017-05-08
Applicant: QUALCOMM Incorporated
Inventor： Hung Ly , Haitong Sun , Tingfang Ji , Joseph Binamira Soriaga
IPC: H04W56/00 , H04L5/00 , H04W4/02 , H04W8/08 , H04W24/10 , H04W52/04 , H04W72/04 , H04W36/00 , H04W88/02
Abstract: Various aspects relate to flexible mobility for a user equipment (UE) based on supported mobility modes of a network and UE conditions. A network may support one or more of a downlink based mobility mode, an uplink based mobility mode, or a hybrid mobility mode for a connectivity state of a UE. A UE may determine a serving cell based on at least one downlink signal. The UE may determine based on the at least one downlink signal, a set of supported mobility modes for the serving cell, including at least one of a downlink based mobility mode, an uplink based mobility mode, or a hybrid based mobility mode. The UE may follow a mobility procedure based on a selected mobility mode from the determined set of supported mobility modes. Other aspects relate to a base station transmitting synchronization signals to support flexible mobility.
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Patent Agency Ranking
公开(公告)号：US10454541B2
公开(公告)日：2019-10-22
申请号：US15470353
申请日：2017-03-27
Applicant: QUALCOMM Incorporated
Inventor： Jay Kumar Sundararajan , Wanshi Chen , Haitong Sun , Jing Jiang , Hao Xu , Tingfang Ji
IPC: H04B7/0456 , H04B17/345 , H04B7/06 , H04L5/00 , H04W72/04 , H04B7/0413
Abstract: Various aspects described herein relate to dynamic uplink antenna port management. A user equipment (UE) may receive reference signal configuration information from a base station. The UE may configure one or more uplink antenna ports based on the received reference signal configuration information and transmit one or more reference signals to the base station on the one or more uplink antenna port. The UE may receive uplink configuration information for one or more data channels and/or one or more control channels. The UE may configure one or more uplinks antenna ports based on the uplink configuration information and may transmit one or more uplink signals on the one or more data channels and/or one or more control channels. The uplink configuration information may be based at least one the one or more reference signals transmitted to the base station.
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公开(公告)号：US10425971B2
公开(公告)日：2019-09-24
申请号：US15600636
申请日：2017-05-19
Applicant: QUALCOMM Incorporated
Inventor： Hung Ly , Wanshi Chen , Tingfang Ji , Hao Xu , Haitong Sun , Heechoon Lee , Kambiz Azarian Yazdi
Abstract: A wireless communications of a contention-based access procedure that reduces collision of reference signals (e.g., when multiple devices select a same reference signal) may support a relatively high user capacity. For a contention-based access procedure, a user equipment may select at least two reference signals and transmit those at least two reference signals in association with a payload to a base station. The payload may be demodulated using each of the at least two reference signals. Thus, if collision occurs with a first reference signal of the at least two reference signals, the payload may still be demodulated using a second reference signal of the at least two reference signals. A base station may demodulate the payload using either first reference signal or the second reference signal. The base station may transmit, to the wireless communications device, a response based on the demodulated payload.
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公开(公告)号：US10349265B2
公开(公告)日：2019-07-09
申请号：US16001527
申请日：2018-06-06
Applicant: QUALCOMM Incorporated
Inventor： Hung Ly , Heechoon Lee , Haitong Sun , Tingfang Ji , Wanshi Chen , Keiichi Kubota
Abstract: Various aspects described herein relate to techniques for mobility mode selection in uplink-based and downlink-based mobility in wireless communications systems. In an aspect, a method for wireless communications may include determining that a user equipment (UE) is operating in a first mobility mode, determining whether the UE satisfies at least one condition associated with mobility of the UE for mobility mode selection, and selecting a second mobility mode based on a determination that the UE satisfies the at least one condition, wherein each of the first mobility mode and the second mobility mode is an uplink mobility mode or a downlink mobility mode. The techniques described herein may apply to different communications technologies, including the 5th Generation (5G) New Radio (NR) communications technology.
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公开(公告)号：US10341946B2
公开(公告)日：2019-07-02
申请号：US15967073
申请日：2018-04-30
Applicant: QUALCOMM Incorporated
Inventor： Navid Abedini , Sundar Subramanian , Muhammad Nazmul Islam , Tao Luo , Bilal Sadiq , Hung Ly , Heechoon Lee , Haitong Sun
Abstract: In order to improve cell detection in NR, a user equipment apparatus performs a PSS search on a first frequency raster from a group of frequency rasters. When the UE detects a PSS on the first frequency raster corresponding to a PSS hypothesis, the UE searches for an SS on a second frequency raster based at least on part on the detected PSS hypothesis on the first frequency raster. The UE may search for a plurality of hypotheses of the SS corresponding to the detected PSS hypothesis on the first frequency raster and the second frequency raster. The second frequency raster may be selected from the group of frequency rasters based at least in part on the detected PSS hypothesis or the first frequency raster on which the PSS was detected.
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公开(公告)号：US10263660B2
公开(公告)日：2019-04-16
申请号：US15588431
申请日：2017-05-05
Applicant: QUALCOMM Incorporated
Inventor： Haitong Sun , Naga Bhushan , Tingfang Ji
Abstract: Disclosed are methods and apparatus used in wireless communications. The methods and apparatus establish a codebook for use in sparse code multiple access (SCMA) encoded communications, in particular. The SCMA codebook is configured to set the codebook for at least one layer (i.e., a user) to include a constellation of points having a first grouping of constellation points located at first radial distance from an origin in a complex plane and a second grouping of constellation points located at a second radial distance from the origin. This codebook arrangement provides increased gains at receivers by optimizing the constellation shape to improve the distance between constellation points (i.e., SCMA codebook performance), and in particular more robust performance when encountering amplitude and phase misalignment in uplink (UL) multiple access.
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