公开(公告)号：US20220061100A1

公开(公告)日：2022-02-24

申请号：US17410757

申请日：2021-08-24

Applicant: QUALCOMM Incorporated

Inventor： Ozcan Ozturk ,  Xiaoxia Zhang ,  Tao Luo ,  Jing Sun

IPC: H04W74/08 ,  H04W16/14 ,  H04W72/04 ,  H04W74/00 ,  H04L12/413

Abstract: This disclosure provides systems, methods, and apparatuses to enable a user equipment (UE) and a base station to improve reception of a random access response (RAR) by the UE in an unlicensed spectrum. A network may define a procedure for calculating a random access radio network temporary identifier (RA-RNTI) specific to unlicensed spectrum based on an extended RAR window. The calculation procedure may allow UEs transmitting in the window to calculate a unique RA-RNTI and identify a RAR addressed to the UE using the unique RA-RNTI. Additionally, or alternatively, a base station may transmit a RAR including timing information associated with a corresponding random access request. Accordingly, a UE may receive the RAR and compare the timing information with its own random access request in order to determine whether the RAR is addressed to the UE. Additionally, a UE may monitor a secondary cell or a sub-band for the RAR.

公开(公告)号：US20220007389A1

公开(公告)日：2022-01-06

申请号：US17337928

申请日：2021-06-03

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Xiaoxia Zhang ,  Yisheng Xue ,  Tao Luo ,  Peter Gaal ,  Juan Montojo ,  Ozcan Ozturk ,  Rajat Prakash ,  Iyab Issam Sakhnini

IPC: H04W72/12 ,  H04W24/08 ,  H04W72/04 ,  H04W72/02 ,  H04L27/26

Abstract: An on-demand scheduling request (SR) design is disclosed. Such an on-demand or triggered SR operation provides pre-configuration of user equipments (UEs) with triggered SR resources. Base stations may also configure UEs to monitor for a trigger signal within a bit field of control signaling from the base station. Upon detecting the trigger signal within such bit field, the UEs may use the triggered SR resources for transmitting triggered SR requests. Such use of the triggered SR resources may be in response to UEs detected cancelation of other periodic configured SR resources.

公开(公告)号：US20210360692A1

公开(公告)日：2021-11-18

申请号：US16948278

申请日：2020-09-23

Applicant: QUALCOMM INCORPORATED

Inventor： Xiaoxia Zhang ,  Jing Sun ,  Ozcan Ozturk

IPC: H04W74/08 ,  H04W76/18 ,  H04W76/28 ,  H04W52/02 ,  H04B7/06 ,  H04W24/10 ,  H04B17/318

Abstract: Wireless communications systems and methods related to communications in a network are provided. A UE receives a listen-before-talk (LBT) failure detection configuration associated with at least one of a dormant mode or a discontinuous reception (DRX) cycle in a first cell of a wireless communication network. The UE performs, based on the LBT failure detection configuration, an LBT failure detection in the first cell while operating in the dormant mode for the first cell or during an inactive DRX configured-on duration of the DRX cycle. The UE transmits an LBT failure detection report based on the LBT failure detection.

公开(公告)号：US20210298070A1

公开(公告)日：2021-09-23

申请号：US17249831

申请日：2021-03-15

Applicant: QUALCOMM INCORPORATED

Inventor： Xiaoxia Zhang ,  Jing Sun ,  Ozcan Ozturk

IPC: H04W74/04

Abstract: Wireless communication devices, systems, and methods related to mechanisms to aid a user equipment (UE) in determining the channel access priority (CAPC) to use for a data radio bearer (DRB) on sidelink that includes multiple quality of service (QoS) flows for a transmission. The UE may receive an indication from a base station (BS) regarding what CAPC to use, or it may itself determine the CAPC based on a rule. The UE may map the plurality of QoS flows to the DRB and transmit the QoS flows using the DRB and the selected CAPC.

公开(公告)号：US20210144760A1

公开(公告)日：2021-05-13

申请号：US17090641

申请日：2020-11-05

Applicant: QUALCOMM Incorporated

Inventor： Ozcan Ozturk ,  Xiaoxia Zhang ,  Jing Sun ,  Andrei Dragos Radulescu

IPC: H04W74/08 ,  H04W74/00 ,  H04W72/04 ,  H04W80/02 ,  H04W76/19

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a bandwidth part (BWP) to switch to after identifying consistent uplink listen-before-talk (LBT) failures on a first BWP based on parameters indicated by a base station. For example, the base station may transmit a switching parameter to the UE that the UE then uses to switch to a second BWP based on identifying the consistent uplink LBT failures on the first BWP. Subsequently, after selecting the second BWP, the UE may attempt to use the second BWP for uplink transmissions (e.g., after performing a random access procedure). Additionally, the UE may indicate the consistent uplink LBT failures to a base station associated with the failed BWP based on a type of cell that is using that failed BWP.

公开(公告)号：US20210058976A1

公开(公告)日：2021-02-25

申请号：US17093374

申请日：2020-11-09

Applicant: QUALCOMM Incorporated

Inventor： Pravjyot Singh Deogun ,  Xiaoxia Zhang ,  Ozcan Ozturk ,  Jing Sun ,  Kapil Bhattad ,  Ananta Narayanan Thyagarajan

IPC: H04W74/08

Abstract: Random access channel access and validity procedures are disclosed. In one aspect, the medium access control (MAC) indications multiple random access occasions (ROs) to user equipments (UEs) for random access transmissions. In such aspect, random access failure would only be declared if listen before talk (LBT) procedures for the random access transmission fail on all of the ROs indicated by the MAC layer. Similarly, in additional aspects, a UE will not apply a backoff value for any LBT failures for random access attempts that occur within an LBT time window. In further aspects, a UE may determine the validity of ROs that overlap with a discovery reference signal measurement timing configuration (DMTC) window. In such aspects, the UE may not use overlapping ROs or may determine a portion of the DMTC window that is not used for base station transmissions and declare the overlapping ROs with the unused portion valid.

公开(公告)号：US20210058819A1

公开(公告)日：2021-02-25

申请号：US16947835

申请日：2020-08-19

Applicant: QUALCOMM INCORPORATED

Inventor： Ozcan Ozturk ,  Xiaoxia Zhang ,  Jing Sun

IPC: H04W28/02 ,  H04W72/10

Abstract: Wireless communication devices, systems, and methods related to mechanisms to aid a user equipment in determining the channel access priority (CAPC) to use for a data radio bearer (DRB) on the response link, such as uplink (UL), that includes multiple quality of service (QoS) flows for an UL transmission (such as for a configured grant UL transmission). The UE may receive a plurality of QoS flows in a common DRB from a base station. The UE may apply a rule to select a CAPC to apply for all QoS flows in the common DRB on an UL transmission. This rule may alternatively include the base station making the selection of the CAPC to apply and informing the UE of the selected CAPC for implementation. The UE may then apply the selected CAPC to the UL transmission.

公开(公告)号：US20210051592A1

公开(公告)日：2021-02-18

申请号：US16990850

申请日：2020-08-11

Applicant: QUALCOMM Incorporated

Inventor： Shanshan Wang ,  Arvind Vardarajan Santhanam ,  Ozcan Ozturk

IPC: H04W52/02 ,  H04W76/15

Abstract: One or more aspects of overheating signaling are disclosed. In some implementations, a method of wireless communication includes transmitting, by a user equipment (UE) while in a dual connectivity configuration, an overheat assistance indicator corresponding to an overheating condition at the UE. The method also includes, after sending the overheat assistance indicator and based on the overheating condition, performing, by the UE, an adjustment on a new radio (NR) configuration.

公开(公告)号：US20210022179A1

公开(公告)日：2021-01-21

申请号：US16928278

申请日：2020-07-14

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Pravjyot Singh Deogun ,  Xiaoxia Zhang ,  Ozcan Ozturk ,  Kapil Bhattad

IPC: H04W74/08 ,  H04W16/14 ,  H04W56/00 ,  H04W24/08 ,  H04B17/318 ,  H04W76/11 ,  H04W68/00 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. The method may include receiving, from a base station over an unlicensed radio frequency spectrum band, a broadcast message including system information, the system information indicating a LBT mode of the base station and a set of random access channel resources associated with a fixed frame period, monitoring a wireless channel of the unlicensed radio frequency spectrum band during the fixed frame period for control information from the base station based on the indicated LBT mode, determining, based on the monitoring, that the base station has access to the wireless channel during the fixed frame period, and performing, based on the determining, a random access channel transmission during the fixed frame period using the set of random access channel resources.

公开(公告)号：US10819475B2

公开(公告)日：2020-10-27

申请号：US15599744

申请日：2017-05-19

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Wanshi Chen ,  Peter Gaal ,  Ozcan Ozturk

IPC: H04W72/04 ,  H04W72/12 ,  H04L1/18 ,  H04W56/00

Abstract: Methods, systems, and devices for wireless communication are described. A base station may configure a user equipment (UE) with a scheduling scheme to align the retransmission of semi-persistent scheduling (SPS) uplink messages with hybrid automatic repeat request (HARQ) feedback. Techniques for scheduling the retransmission of uplink messages on resources designated for SPS transmission, as opposed to resources not designated for SPS transmission, are also described. Aspects of the disclosure also include using incremental redundancy HARQ feedback to reduce packet loss at a receiver. In some cases, a base station receiving an uplink message may decode the message using multiple processes based on different assumptions regarding the redundancy version ID (RVID) of the uplink message.