公开(公告)号：US20230309137A1

公开(公告)日：2023-09-28

申请号：US18202682

申请日：2023-05-26

Applicant: Apple Inc.

Inventor： Yujian Zhang ,  Youn Hyoung Heo

IPC: H04W72/56 ,  H04W76/18 ,  H04W76/10 ,  H04W76/19 ,  H04W76/15 ,  H04W36/00 ,  H04W4/90 ,  H04W28/08 ,  H04W72/51 ,  H04W72/52 ,  H04W72/542 ,  H04W24/10 ,  H04W48/06 ,  H04W74/00 ,  H04W48/08 ,  H04W48/18 ,  H04W28/02 ,  H04W48/12 ,  H04W8/00 ,  H04W52/34 ,  H04W56/00 ,  H04W72/0453 ,  H04B17/318 ,  H04W74/08 ,  H04W8/06 ,  H04W8/18 ,  H04W60/00 ,  H04W60/02 ,  H04J3/16 ,  H04L5/00 ,  H04W4/02 ,  H04W4/60 ,  H04W76/14 ,  H04W4/80

CPC classification number: H04W72/56 ,  H04W76/18 ,  H04W76/10 ,  H04W76/19 ,  H04W76/15 ,  H04W36/0069 ,  H04W4/90 ,  H04W28/08 ,  H04W72/51 ,  H04W72/52 ,  H04W72/542 ,  H04W24/10 ,  H04W48/06 ,  H04W74/004 ,  H04W48/08 ,  H04W48/18 ,  H04W28/0215 ,  H04W48/12 ,  H04W8/005 ,  H04W52/346 ,  H04W56/002 ,  H04W72/0453 ,  H04W56/001 ,  H04B17/318 ,  H04W74/0833 ,  H04W8/06 ,  H04W8/183 ,  H04W60/00 ,  H04W60/02 ,  H04J3/1694 ,  H04L5/0007 ,  H04W4/023 ,  H04W4/60 ,  H04W76/14 ,  H04W4/80 ,  H04W4/02 ,  H04L5/001 ,  H04L5/0098 ,  Y02D30/70 ,  H04W92/20

Abstract: Embodiments of a User Equipment (UE) to support dual-connectivity with a Master Evolved Node-B (MeNB) and a Secondary eNB (SeNB) are disclosed herein. The UE may receive downlink traffic packets from the MeNB and from the SeNB as part of a split data radio bearer (DRB). At least a portion of control functionality for the split DRB may be performed at each of the MeNB and the SeNB. The UE may receive an uplink eNB indicator for an uplink eNB to which the UE is to transmit uplink traffic packets as part of the split DRB. Based at least partly on the uplink eNB indicator, the UE may transmit uplink traffic packets to the uplink eNB as part of the split DRB. The uplink eNB may be selected from a group that includes the MeNB and the SeNB.

公开(公告)号：US20220159760A1

公开(公告)日：2022-05-19

申请号：US17440035

申请日：2020-06-25

Applicant: Apple Inc.

Inventor： Jerome Parron ,  Yujian Zhang ,  Ozgur Oyman

IPC: H04W76/15 ,  H04L43/0852 ,  H04L43/0829 ,  H04W72/12

Abstract: Disclosed are methods, systems, apparatus, and computer programs for providing a network with assistance information from a user equipment (UE) that is participating in a multimedia telephony session. In one aspect, a method includes determining a connection parameter of a multimedia telephony session between a user equipment (UE) and a remote UE. The method further includes N generating assistance information based on the connection parameter. Yet further, the method include sending, using a medium access control (MAC) control element, the assistance information to an access node (AN) serving the UE.

公开(公告)号：US20220159514A1

公开(公告)日：2022-05-19

申请号：US17438656

申请日：2020-04-30

Applicant: Apple Inc.

Inventor： Yujian Zhang ,  Junaid Ansari ,  Marta Martinez Tarradell

IPC: H04W28/12 ,  H04W24/08

Abstract: A process for execution by user equipment (UE) for activation or deactivation of a Radio Link Control (RLC) entity for Packet Data Convergence Protocol (PDCP) duplication includes identifying a set of RLC entities that are configured by a Radio Resource Control (RRC) for communication using PDCP. The process includes, for each RLC entity of the set of RLC entities: determining a network configured offset value; determining a channel condition value; and determining an RLC entity level value based on a combination of the network configured offset value and the channel condition value. The process includes comparing the RLC entity level value for each RLC entity to a threshold value; and based on comparing the RLC entity level value to the threshold value, selecting a subset of RLC entities for PDCP duplication; and activating or deactivating PDCP duplication for the selected subset of RLC entities.

公开(公告)号：US11197235B2

公开(公告)日：2021-12-07

申请号：US16921272

申请日：2020-07-06

Applicant: Apple Inc.

Inventor： Ralf Bendlin ,  Gang Xiong ,  Jong-Kae Fwu ,  Yujian Zhang

IPC: H04W4/00 ,  H04W48/14 ,  H04W48/10 ,  H04W48/16 ,  H04W74/00

Abstract: A method for low overhead system information acquisition (LOSIA) is disclosed. The LOSIA method includes several techniques for transmitting common channels in a next generation Radio Access Technology (xRAT). Instead of transmitting system information in a periodic, static, cell-specific, wideband manner, the transmission is triggered by user equipment in an “on demand” manner. The LOSIA method allows the network to control the overhead, bandwidth, and periodicity, as well as other characteristics. The LOSIA method employs several different techniques to trigger the information upon which the network can act, for example, by transmitting different payloads depending on the received trigger.

公开(公告)号：US11096244B2

公开(公告)日：2021-08-17

申请号：US16093093

申请日：2016-12-22

Applicant: APPLE INC.

Inventor： Umesh Phuyal ,  Yujian Zhang ,  Youn Hyoung Heo

IPC: H04L1/00 ,  H04L1/18 ,  H04L5/00 ,  H04W72/04 ,  H04W72/14 ,  H04W76/27 ,  H04W80/02 ,  H04W88/06

Abstract: Techniques, apparatus and methods are disclosed that enable non-adaptive Hybrid Automatic Repeat Request (HARQ) retransmission using SPS resources. Non-adaptive HARQ retransmission can be enabled in a configured Uplink (UL) resource (such as SPS resources). As it may not be beneficial to allow non-adaptive HARQ retransmission on SPS resources for all kinds of traffic, options for proper configuration can be provided either by network signaling or by predefined configurations. For example, embodiments are described to enable non-adaptive retransmission using SPS resources: Always allow non-adaptive retransmission on configured UL grants; Allow non-adaptive retransmission on configured UL grants only for certain predefined conditions; Allow non-adaptive HARQ retransmissions when there is no data in the UL buffer for new transmission; Enable non-adaptive retransmissions using a configurable boolean parameter; Enable non-adaptive retransmissions using a configurable threshold parameter; and Enable non-adaptive retransmissions using a configuration sent using a system information broadcast.

公开(公告)号：US11006312B2

公开(公告)日：2021-05-11

申请号：US16299389

申请日：2019-03-12

Applicant: Apple Inc.

Inventor： Jaemin Han ,  Yujian Zhang ,  Sudeep K. Palat ,  Alexander Sirotkin

IPC: H04W28/02 ,  H04W28/04 ,  H04W92/12 ,  H04W88/08 ,  H04W80/02

Abstract: Systems and methods of providing feedback when a specific PDU is successfully delivered or transmitted are described. The node hosting PDCP entity indicates triggering of a DDDS frame from the remote corresponding node. Rather than immediately triggering transmission of a DDDS frame, the node hosting PDCP entity indicates triggering based on successful delivery of a PDU having a specific SN, as long as in-sequence delivery or transmission of PDUs up to the specific SN was successful. The DDDS frame is transmitted once the corresponding node determines that the PDU having the SN was successfully delivered or transmitted. After reporting by the DDDS frame, the QoS flow associated with the PDUs is remapped from a source DRB to a target DRB.

公开(公告)号：US10973078B2

公开(公告)日：2021-04-06

申请号：US15754476

申请日：2016-06-24

Applicant: Apple Inc.

Inventor： Umesh Phuyal ,  Youn Hyoung Heo ,  Yujian Zhang ,  Mo-Han Fong

IPC: H04W4/00 ,  H04W76/28 ,  H04W72/04 ,  H04W76/27 ,  H04L1/18 ,  H04W72/12 ,  H04W76/30

Abstract: An apparatus configured to be employed within an evolved Node B (eNodeB) or within a User Equipment (UE) is disclosed. The apparatus includes control circuitry. The control circuitry is configured to configure a semi-persistent scheduling (SPS) configuration that accommodates short subframes. The short subframes have a transmit time interval (TTI) of less than duration of 1 legacy subframe (e.g., 1 ms). The SPS configuration is provided within a radio resource control (RRC) signaling.

公开(公告)号：US20200374781A1

公开(公告)日：2020-11-26

申请号：US16921272

申请日：2020-07-06

Applicant: Apple Inc.

Inventor： Ralf Bendlin ,  Gang Xiong ,  Jong-Kae Fwu ,  Yujian Zhang

IPC: H04W48/14 ,  H04W48/10 ,  H04W48/16 ,  H04W74/00

Abstract: A method for low overhead system information acquisition (LOSIA) is disclosed. The LOSIA method includes several techniques for transmitting common channels in a next generation Radio Access Technology (xRAT). Instead of transmitting system information in a periodic, static, cell-specific, wideband manner, the transmission is triggered by user equipment in an “on demand” manner. The LOSIA method allows the network to control the overhead, bandwidth, and periodicity, as well as other characteristics. The LOSIA method employs several different techniques to trigger the information upon which the network can act, for example, by transmitting different payloads depending on the received trigger.

公开(公告)号：US12041487B2

公开(公告)日：2024-07-16

申请号：US17438656

申请日：2020-04-30

Applicant: Apple Inc.

Inventor： Yujian Zhang ,  Junaid Ansari ,  Marta Martinez Tarradell

IPC: H04W28/02 ,  H04W24/08 ,  H04W28/12 ,  H04W36/00

CPC classification number: H04W28/12 ,  H04W24/08

Abstract: A process for execution by user equipment (UE) for activation or deactivation of a Radio Link Control (RLC) entity for Packet Data Convergence Protocol (PDCP) duplication includes identifying a set of RLC entities that are configured by a Radio Resource Control (RRC) for communication using PDCP. The process includes, for each RLC entity of the set of RLC entities: determining a network configured offset value; determining a channel condition value; and determining an RLC entity level value based on a combination of the network configured offset value and the channel condition value. The process includes comparing the RLC entity level value for each RLC entity to a threshold value; and based on comparing the RLC entity level value to the threshold value, selecting a subset of RLC entities for PDCP duplication; and activating or deactivating PDCP duplication for the selected subset of RLC entities.

公开(公告)号：US12035373B2

公开(公告)日：2024-07-09

申请号：US17441185

申请日：2020-03-20

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Yujian Zhang ,  Yushu Zhang ,  Sergey Sosnin ,  Seau S. Lim

IPC: H04W74/0833 ,  H04W72/1268 ,  H04W72/566 ,  H04W74/0836 ,  H04W74/0838

CPC classification number: H04W74/0833 ,  H04W72/1268 ,  H04W72/566

Abstract: A method for handling a Message A physical uplink shared channel (PUSCH) transmission in a random access channel (RACH) procedure for use in fifth generation new radio (5G NR) wireless communication system includes determining that the Message A PUSCH transmission in a first step of a two-step RACH procedure overlaps with at least one other uplink physical channel transmission and transmitting at least one of the Message A PUSCH transmission or the at least one other uplink physical channel transmission in accordance with a priority rule.