公开(公告)号：US11082329B2

公开(公告)日：2021-08-03

申请号：US15994453

申请日：2018-05-31

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Milap Majmundar ,  Thomas Novlan

IPC: H04L12/707 ,  H04L12/801 ,  H04L12/703 ,  H04L12/26 ,  H04L1/18

Abstract: The described technology is generally directed towards lossless delivery of data when there are route changes, e.g., in an integrated access and backhaul (IAB) multi-hop relay network. When a route changes is to occur, the last unchanged node in a multiple hop route preserves the data (e.g., copies unacknowledged and unsent PDCP PDUs from the protocol stack corresponding to the radio link control layer of the failed relay hop, and populates a replacement protocol stack for the node in the new route with the preserved data. Also described is pre-emptive detection of link failure, which triggers a route change based on monitoring retransmissions to detect a deteriorating link, which can occur before complete link communication failure.

公开(公告)号：US11071091B2

公开(公告)日：2021-07-20

申请号：US16244987

申请日：2019-01-10

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Xiaoyi Wang ,  Salam Akoum ,  Aditya Chopra ,  Andrew Thornburg ,  Milap Majmundar ,  Thomas Novlan ,  Ralf Bendlin

IPC: H04W72/02 ,  H04W72/06 ,  H04W4/40 ,  H04W72/04 ,  H04W72/08

Abstract: The technologies described herein are generally directed toward communicating determined contention levels of resource pools to user equipments enabling the user equipments to select from available resource pools. According to an embodiment, a system can comprise a processor and a memory that can store executable instructions that, when executed by the processor, facilitate performance of operations. The operations can include assigning determined contention levels to respective ones of a group of resource pools. The operations can further include communicating, to a user equipment device, the determined contention levels, enabling the user equipment device to select a resource pool of the group of resource pools based on the determined contention levels.

公开(公告)号：US11064449B2

公开(公告)日：2021-07-13

申请号：US16543305

申请日：2019-08-16

Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.

Inventor： Ralf Bendlin ,  Aditya Chopra ,  Thomas Novlan ,  Milap Majmundar

IPC: H04W56/00 ,  H04W24/10

Abstract: The described technology is generally directed towards over the air synchronization of network nodes. In general, the techniques disclosed herein can be implemented by a first base station node device and a second base station node device. A wireless backhaul connection between the base station node devices allows the first base station node device to connect to a core network via the second base station node device. The techniques disclosed herein can be implemented as a protocol including communications back and forth between the base station node devices, which enables measurement of communication delays such as propagation delays and processing delays. The base station node devices can then use the measured communication delays to better synchronize clocks used to time radio frequency transmissions.

公开(公告)号：US11039422B2

公开(公告)日：2021-06-15

申请号：US16245635

申请日：2019-01-11

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Xiaoyi Wang ,  Ralf Bendlin ,  Arunabha Ghosh ,  Andrew Thornburg ,  Salam Akoum ,  Thomas Novlan ,  Milap Majmundar

IPC: H04W72/02 ,  H04W8/24 ,  H04W72/04 ,  H04W72/12 ,  H04W88/04

Abstract: To increase network efficiency, a user equipment (UE) can be appointed as a local manager to coordinate the allocation of resources used by other UEs. For example, the network can promote the UE as a local manager and assign the local manager a resource pool. The local manager can then broadcast synchronization signals to let the other UEs associate themselves with the local manager. After the other UEs are synced with the local manager, the local manager can allocate resources to the other UEs. Based on report data regarding the local managers management procedures, the network can maintain the UE as the local manager or demote the UE from local manager status.

公开(公告)号：US11032744B2

公开(公告)日：2021-06-08

申请号：US15587388

申请日：2017-05-04

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Milap Majmundar ,  Thomas Novlan

IPC: H04W36/30 ,  H04W36/06 ,  H04W36/00 ,  H04B7/022 ,  H04B7/06

Abstract: The described technology is generally directed towards overcoming a radio link interruption event, for example caused in the mmWave spectrum by a physical blockage between user equipment and a communications network distributed unit. Described is executing an inter-distributed unit beam switch in response to a radio link interruption trigger when no beams are available to support the user equipment from the distributed unit currently serving the user equipment. The inter-distributed unit beam switch may be performed by notifying a flow control process of the radio link interruption, which can switch to a different distributed unit such as selected by beam quality measurements.

公开(公告)号：US20210160940A1

公开(公告)日：2021-05-27

申请号：US17089405

申请日：2020-11-04

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Milap Majmundar ,  Thomas Novlan ,  Salam Akoum ,  Arunabha Ghosh

IPC: H04W76/15 ,  H04W80/02 ,  H04W24/08

Abstract: A system that facilitates monitoring communication between a network node device and a communication device, wherein information is communicated by utilizing a first distribution unit (DU) node device comprising a first medium access control (MAC) layer component of the network node device and receiving condition information representative of a condition, wherein the condition indicates whether to add a second DU node device comprising a second MAC layer component to be utilized by the communication device. In response to determining that the condition indicates addition of the second DU node device, facilitating establishing a connection between the first MAC layer component of the first DU node device and the second MAC layer component of the second DU node device using a MAC interface and facilitating communication of control plane information and user plane information between the first MAC layer component and the second MAC layer component using the MAC interface.

公开(公告)号：US11006411B2

公开(公告)日：2021-05-11

申请号：US16449306

申请日：2019-06-21

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Milap Majmundar ,  Thomas Novlan ,  Arunabha Ghosh

IPC: H04W4/00 ,  H04W72/04

Abstract: Concurrent mini-slot based and slot based transmissions to a single device are provided herein. A method can comprise transmitting, by a network device comprising a processor, first data via a first control channel indicating a slot based transmission for a device and second data via a second control channel indicating a mini-slot based transmission for the device. A first length of the slot based transmission can comprise a defined number of symbols and a second length of the mini-slot based transmission can comprise some of the defined number of symbols. The method can also comprise transmitting, by the network device, the slot based transmission and the mini-slot based transmission. The slot based transmission and the mini-slot based transmission can be logically separate transmissions that can be scheduled to be concurrent transmissions for the device.

公开(公告)号：US10979891B2

公开(公告)日：2021-04-13

申请号：US16738506

申请日：2020-01-09

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Thomas Novlan ,  Milap Majmundar ,  Arunabha Ghosh

IPC: H04W4/00 ,  H04W8/22 ,  H04W72/04 ,  H04W24/02 ,  H04W88/04 ,  H04W84/04 ,  H04W88/06

Abstract: In a 5G network, new radios (NR) can be deployed as a standalone radio access technology or as a non-standalone radio access technology assisted by another radio access technology. Long-term evolution (LTE), which is widely deployed can provide seamless coverage and uninterrupted connectivity, however NRs can provide significantly increased data rates or new services. However, the deployment of NR can be limited to hotspots under the footprint of LTE. Therefore, dual connectivity between LTE and NR can be utilized for non-standalone NR because control plane functions can be sent over LTE while the data plane can be managed on NR, allowing for simplified NR deployments where device support for both LTE and NR is available.

公开(公告)号：US20210105738A1

公开(公告)日：2021-04-08

申请号：US16777378

申请日：2020-01-30

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Ralf Bendlin ,  Arunabha Ghosh ,  Thomas Novlan ,  Milap Majmundar ,  Xiaoyi Wang

IPC: H04W68/00 ,  H04W8/18 ,  H04W8/24 ,  H04W76/27

Abstract: Various embodiments disclosed that describe systems to facilitate paging an idle subscriber identity module using a connected subscriber identity module operating in a single radio configuration. According to some embodiments, a system can comprise receiving a paging request that is designated for a first device of a communication device, wherein the communication device comprises the first device and a second device; determining whether the second device is in an active state; and in response to the determining that the second device is in the active state, transmitting a message to second device indicating that the paging message was received for the first device.

公开(公告)号：US20210105078A1

公开(公告)日：2021-04-08

申请号：US16789076

申请日：2020-02-12

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Milap Majmundar ,  Ralf Bendlin ,  Thomas Novlan ,  Xiaoyi Wang ,  Arunabha Ghosh

IPC: H04J3/02 ,  H04W74/08 ,  H04W72/04 ,  H04W76/19 ,  H04W68/02

Abstract: The described technology is generally directed towards sharing a radio by multiple subscriber identities at a device. A time division multiplexing pattern at the device radio gives primary radio use to a first subscriber identity, while also providing time windows for radio use to a second subscriber identity. In response to a communication by the second subscriber identity, the time division multiplexing pattern can be changed to give the primary radio use to the second subscriber identity. Also, a radio resource control protocol can designate appropriate states for the different subscriber identities, designating the subscriber identity with primary radio use as connected, while the other subscriber identity is designated as inactive or idle.