公开(公告)号：US11985652B2

公开(公告)日：2024-05-14

申请号：US17593680

申请日：2021-01-14

Applicant: APPLE INC.

Inventor： Sarma V. Vangala ,  Fangli Xu ,  Haijing Hu ,  Murali Narasimha ,  Naveen Kumar R Palle Venkata ,  Ralf Rossbach ,  Sethuraman Gurumoorthy ,  Sree Ram Kodali ,  Yuqin Chen ,  Zhibin Wu

IPC: H04W72/1263 ,  H04W28/02

CPC classification number: H04W72/1263 ,  H04W28/0278

Abstract: Systems and methods for enhancing the use of pre-emptive buffer status reports (pre-BSRs) in wireless communications systems implementing integrated access and backhaul (IAB) networks are disclosed herein. In some cases, an IAB node can re-classify the LCGs of one or more incoming data flows according to such pre-BSR usage. This may involve the use of and extended medium access control (MAC) control element (MAC CE) having more LCG bits than previously contemplated, having sub-LCG bits, or that includes further LCG classification information bits. Other embodiments use a priority index for LCGs in an extended pre-BSR MAC CE. The priority index may include one or more of a priority field, a prioritized bit rate (PBR), and/or a bucket size duration (BSD) that is reported to an IAB donor. Other embodiments leverage the provision of additional grants from an IAB node to a child IAB node to reduce unwanted pre-BSR effects.

公开(公告)号：US11916673B2

公开(公告)日：2024-02-27

申请号：US17437754

申请日：2020-04-10

Applicant: Apple Inc.

Inventor： Gabriel Arrobo Vidal ,  Qian Li ,  Murali Narasimha

IPC: H04L1/00 ,  H04W80/02

CPC classification number: H04L1/0075 ,  H04L1/0041 ,  H04L1/0076 ,  H04W80/02

Abstract: A method for network coding at a packet data convergence protocol (PDCP) layer by a next-generation NodeB (gNB) includes selecting a coding coefficient from a location in a Vandermonde matrix. The method includes setting an identifier value identifying the location in the Vandermonde matrix corresponding to the selected coding coefficient. The method includes encoding one or more packets each comprising a PDCP data unit. The encoding of at least one of the one or more packets includes applying a function to data in the packet, the function including the coding coefficient. The method includes generating a message comprising the at least one encoded packet. The method includes transmitting the message to a user equipment (UE).

公开(公告)号：US20230403602A1

公开(公告)日：2023-12-14

申请号：US18456833

申请日：2023-08-28

Applicant: APPLE INC.

Inventor： Murali Narasimha ,  Sudeep Palat ,  Candy Yiu

IPC: H04W28/02 ,  H04B7/155

CPC classification number: H04W28/0278 ,  H04B7/155 ,  H04W28/0289

Abstract: Systems and methods provide flow control for uplink traffic in an integrated access and backhaul network. A first relay node determines that its uplink buffer has reached an occupancy level higher than a pre-determined level. In response, the first relay node transmits, to a second relay node associated with the first relay node, a message indicating a buffer occupancy status of the uplink buffer of the first relay node.

公开(公告)号：US20210345163A1

公开(公告)日：2021-11-04

申请号：US17285386

申请日：2019-10-16

Applicant: APPLE INC.

Inventor： Murali Narasimha ,  Bharat Shrestha

IPC: H04W28/02 ,  H04W72/12 ,  H04W72/14

Abstract: Technology for an Integrated Access and Backhaul (IAB) node in an IAB network is disclosed. The IAB node can decode, at a distributed unit (DU) of the IAB node, a first resource request received from one of a user equipment (UE) or a child IAB node, wherein the first resource request is associated with the UE. The IAB node can encode, at a mobile terminal (MT) of the IAB node, a second resource request for transmission to the parent IAB node or the IAB donor triggered by receipt of the first resource request, wherein the second resource request is transmitted prior to a receipt of a protocol data unit (PDU) at the DU of the IAB node.

公开(公告)号：US12137368B2

公开(公告)日：2024-11-05

申请号：US17441945

申请日：2021-06-25

Applicant: Apple Inc.

Inventor： Ralf Rossbach ,  Fangli Xu ,  Haijing Hu ,  Murali Narasimha ,  Sarma V. Vangala ,  Weidong Yang

IPC: H04W28/02 ,  H04W72/1263 ,  H04W76/10

Abstract: A user equipment (UE) may establish a connection with a network for transmission of a plurality of data bursts further comprising a plurality of data segments. The UE may transmit, to the network, a first data segment corresponding to a first quality of service flow identifier (QFI) associated with a first quality of service (QoS) flow and a second data segment corresponding to a second QFI associated with a second QoS flow. The UE may be configured to map one or more data segments to one or more QFIs based on at least one of a slice type, a frame type, a modulo operation, and a sequence number. The plurality of data bursts may be transmitted according to at least one of one or more configured grants (CGs), one or more dynamic grants (DGs), and one or more instances of the one or more CGs or one or more DGs.

公开(公告)号：US12004071B2

公开(公告)日：2024-06-04

申请号：US17656943

申请日：2022-03-29

Applicant: Apple Inc.

Inventor： Murali Narasimha ,  Ralf Rossbach ,  Sarma V. Vangala

IPC: H04W40/24 ,  H04W28/02 ,  H04W88/14

CPC classification number: H04W40/248 ,  H04W28/0257 ,  H04W88/14

Abstract: A user equipment (UE) is configured to access a first base station in a network via an access link, wherein the first base station is an integrated access and backhaul (IAB) node in a first IAB network topology connected to a second base station via one or more backhaul links, wherein the second base station is an IAB-donor for the first base station, report, to the first base station, information for reducing a maximum data rate for the UE when the UE is deployed in one or more IAB network topologies and receive data packages with a reduced maximum data rate based on the reported information.

公开(公告)号：US11770752B2

公开(公告)日：2023-09-26

申请号：US17959186

申请日：2022-10-03

Applicant: Apple Inc.

Inventor： Yujian Zhang ,  Qian Li ,  Youn Hyoung Heo ,  Sudeep K. Palat ,  Murali Narasimha

IPC: H04W40/22 ,  H04B7/15 ,  H04W28/02 ,  H04W40/30 ,  H04W74/08 ,  H04W72/20 ,  H04W84/04 ,  H04W88/08 ,  H04W92/20

CPC classification number: H04W40/22 ,  H04B7/15 ,  H04W28/0268 ,  H04W40/30 ,  H04W72/20 ,  H04W74/0833 ,  H04W28/0278 ,  H04W84/047 ,  H04W88/08 ,  H04W92/20

Abstract: Systems and methods of reducing control plane latency in a 5G IAB network are described. SRs transmitted between nodes indicate that a control plane PDU is to be transmitted. The SRs use periodic resources or OCCs reserved for control plane signaling and are initiated by an RRC message or RACH from the UE. The SRs are initiated if the LCD field in the MAC sub header of the RRC message indicates the CCCH or the DCCH logical channel. If the PDU is available after the original resource, a resource is used that is provided via another grant, which is periodically provided or automatically initiated due to failure to transmit on the original grant. The SR or RRC message can also specify a delayed timeslot for the grant. For contention-based procedures the RACH preamble is randomly selected or selected from among a set of RACH preambles assigned for RRC procedures.

公开(公告)号：US11751093B2

公开(公告)日：2023-09-05

申请号：US17264688

申请日：2019-08-08

Applicant: APPLE INC.

Inventor： Murali Narasimha ,  Sudeep Palat ,  Candy Yiu

IPC: H04B7/155 ,  H04W28/02

CPC classification number: H04W28/0278 ,  H04B7/155 ,  H04W28/0289

Abstract: Systems and methods provide flow control for uplink traffic in an integrated access and backhaul network. A first relay node determines that its uplink buffer has reached an occupancy level higher than a pre-determined level. In response, the first relay node transmits, to a second relay node associated with the first relay node, a message indicating a buffer occupancy status of the uplink buffer of the first relay node.

公开(公告)号：US11463938B2

公开(公告)日：2022-10-04

申请号：US17275108

申请日：2019-09-25

Applicant: Apple Inc.

Inventor： Yujian Zhang ,  Qian Li ,  Youn Hyoung Heo ,  Sudeep K. Palat ,  Murali Narasimha

IPC: H04W40/22 ,  H04B7/15 ,  H04W72/12 ,  H04W28/02 ,  H04W40/30 ,  H04W74/08 ,  H04W84/04 ,  H04W88/08 ,  H04W92/20

Abstract: Systems and methods of reducing control plane latency in a 5G IAB network are described. SRs transmitted between nodes indicate that a control plane PDU is to be transmitted. The SRs use periodic resources or OCCs reserved for control plane signaling and are initiated by an RRC message or RACH from the UE. The SRs are initiated if the LCID field in the MAC subheader of the RRC message indicates the CCCH or the DCCH logical channel. If the PDU is available after the original resource, a resource is used that is provided via another grant, which is periodically provided or automatically initiated due to failure to transmit on the original grant. The SR or RRC message can also specify a delayed timeslot for the grant. For contention-based procedures the RACH preamble is randomly selected or selected from among a set of RACH preambles assigned for RRC procedures.

公开(公告)号：US20220132420A1

公开(公告)日：2022-04-28

申请号：US17431277

申请日：2020-03-26

Applicant: Apple Inc.

Inventor： Murali Narasimha ,  Seau S. Lim ,  Anthony Lee ,  Yongjun Kwak

IPC: H04W52/02 ,  H04W74/08

Abstract: A user equipment (UE), or other network component can operate to generate listen-before-talk (LBT) operations in order to manage power consumption by configuring the discontinuous reception (DRX) in a dynamic manner. The UE can configure an extended active time for the DRX based on whether the LBT is successful and an acquisition channel indication from a base station, e.g., a next generation NodeB (gNB). The UE can operate aperiodic wakeup occasions with or independently of periodic DRX on-durations to better manage power while monitoring a channel for unlicensed carrier communications.