New York University

Other

Matsushita Electric Industrial Co., Ltd.

At&t Intellectual Property I, LP

Lucent Technologies Inc.

Verizon Patent and Licensing Inc.

Shivendra S Panwar

Pei Liu

Elza Erkip

Thanasis Korakis

Yanming Shen

Yao Rong Wang

Keith W Ross

Shunyuan Ye

Zhifeng Tao

Yong Liu

Chun Nie

Rajeev Kumar

Athanasios Koutsaftis

Rittwik Jana

Sundeep Rangan

Hung-Hsiang Jonathan Chao

Dennis Bushmitch

H Jonathan Chao

Stevan Harvey Leiden

Hong-Yi Tzeng

Zhengye Liu

Robert Margolies

Yiwei Thomas Hou

Marco Mezzavilla

Ayaskant Rath

Anna Scaglione

Menglei Zhang

Ozgu Alay

Salik Makda

Yihan Li

Fraida Fund

To address challenges in existing 5G wireless networks, a new wireless backhaul scheme, referred to as Fast Wireless Backhaul (FWB), is described. More specifically, in order to reduce handover delays in a network including a gateway device, at least two base stations, and a user equipment device, one of a group of the base stations selected is identified as a primary base station, and each of the other of the group of base stations selected is identified as a secondary base station. A control plane wireless connection is maintained between the user equipment device and each of the preferred base stations selected. A data plane wireless connection is maintained only between the user equipment device and the primary base station.

Handover with low latency in response to blockages in a wireless network

Fifth Generation (5G) Millimeter Wave (mmWave) cellular networks are expected to serve a large set of throughput intensive, ultra-reliable, and ultra-low latency applications. To meet these stringent requirements, while minimizing the network cost, the 3Generation Partnership Project has proposed a new transport architecture, where certain functional blocks can be placed closer to the network edge. In this architecture, however, blockages and shadowing in 5G mmWave cellular networks may lead to frequent handovers (HOs) causing significant performance degradation. To meet the ultra-reliable and low-latency requirements of applications and services in an environment with frequent HOs, a Fast Inter-Base Station Ring (FIBR) architecture is described, in which base stations that are in close proximity are grouped together, interconnected by a bidirectional counter-rotating buffer insertion ring network. FIBR enables high-speed control signaling and fast-switching among BSs during HOs, while allowing the user equipment to maintain a high degree of connectivity. The FIBR architecture efficiently handles frequent HO events in mm Wave and/or Terahertz cellular systems, and more effectively satisfies the QoS requirements of 5G applications.

Fast inter-base station ring (FIBR): new millimeter wave cellular network architectures and processes

Due to massive available spectrum in the millimeter wave (mmWave) bands, cellular systems in these frequencies may provide orders of magnitude greater capacity than networks in conventional lower frequency bands. However, due to high susceptibility to blocking, mmWave links can be extremely intermittent in quality. This combination of high peak throughputs and intermittency can cause significant challenges in end-to-end transport-layer mechanisms such as TCP, such as the challenging problem of bufferbloat. Specifically, with current buffering and congestion control mechanisms, high throughput-high variable links can lead to excessive buffers incurring long latency. A dynamic receive window approach addresses the problem of bufferbloat.

Determining a receive window of a receiving device that reduces bufferbloat in a wireless communications system, such as that caused by TCP dynamics over millimeter wave links

Aspects of the subject disclosure may include, for example, a wireless framework for delivering TV services. The wireless framework can include a mix of wireless access technologies (e.g. Satellite, WiFi and/or LTE overlay links). One or more aspects of the subject disclosure include injecting TV content into the network at a few locations (e.g., residential locations) using satellite antennas (e.g., satellite dishes). The content is then further distributed to other homes using a house-to-house WiFi network and/or via an overlay LTE network. Other embodiments are disclosed.

Method and apparatus for wireless distribution of TV services

Video streaming applications are a major contributor to the recent dramatic rise of data traffic in cellular networks. Mobile users in a cellular network often experience fluctuating data rates, which might affect the quality of video they view in a streaming service. Although replacing such video streaming services with video downloading/renting services could potentially allow such mobile users to enjoy consistently higher quality videos, such services typically cost a lot more than video streaming services because of legal copyright pricing and management issues. By downloading enhancement layers but streaming base layers of the content, mobile users can enjoy download-quality videos with a service (legally) classified as a streaming service.

Streamloading content, such as video content for example, by both downloading enhancement layers of the content and streaming a base layer of the content

Scheduling methods and apparatus for use with optical switches with hybrid architectures are provided. An exemplary distributed scheduling process achieves 100% throughput for any admissible Bernoulli arrival traffic. The exemplary distributed scheduling process may be easily adapted to work for any finite round trip time, without sacrificing any throughput. Simulation results also showed that this distributed scheduling process can provide very good delay performance for different traffic patterns and for different round trip times associated with current switches.

Distributed scheduling for an optical switch

Scheduling methods and apparatus are provided for an input-queued switch. The exemplary distributed scheduling process achieves 100% throughput for any admissible Bernoulli arrival traffic. The exemplary distributed scheduling process includes scheduling variable size packets. The exemplary distributed scheduling process may be easily implemented with a low-rate control or by sacrificing the throughput by a small amount. Simulation results also showed that this distributed scheduling process can provide very good delay performance for different traffic patterns. The exemplary distributed scheduling process may therefore be a good candidate large-scale high-speed switching systems.

Distributed scheduling for variable-size packet switching system

Cooperative communication is a technique that can be employed to meet the increased throughput needs of next generation WiMAX systems. In a cooperative scenario, multiple stations can jointly emulate the antenna elements of a multi-input multi-output system in a distributed fashion. A framework for a randomized distributed space-time coding ('R-DSTC') technique in the emerging relay-assisted WiMAX network, and the development of a cooperative medium access control ('MAC') layer protocol, called CoopMAX, for R-DSTC deployment in an IEEE 802.16 system, is described. The technique described couples the MAC layer with the physical (PHY) layer for performance optimization. The PHY layer yields significant diversity gain, while the MAC layer achieves a substantial end-to-end throughput gain.

CoopMAX: a cooperative MAC with randomized distributed space time coding for an IEEE 802.16 network

Scheduling methods and apparatus are provided for buffered crossbar switches with a crosspoint buffer size as small as one and no speedup. An exemplary distributed scheduling process achieves 100% throughput for any admissible Bernoulli arrival traffic. Simulation results also showed that this distributed scheduling process can provide very good delay performance for different traffic patterns. The simulation results also showed that packet delay is very weakly dependent on the switch size, which implies that the exemplary distributed scheduling process can scale with the number of switch ports.

Scheduling, including distributed scheduling, for a buffered crossbar switch

A distributed and opportunistic medium access control (MAC) layer protocol for randomized distributed space-time coding (R-DSTC), which may be deployed in an IEEE 802.11 wireless local area network (WLAN), is described. Unlike other cooperative MAC designs, there is no need to predetermine, before packet transmission, which stations will serve as relays. Instead, the MAC layer protocol opportunistically recruits relay stations on the fly. Network capacity and delay performance is much better than legacy IEEE 802.11g network, and even cooperative forwarding using one relay station. Avoiding the need to collect the station-to-station channel statistics considerably reduces overhead otherwise required for channel measurement and signaling.

Robust cooperative relaying in a wireless LAN: cross-layer design

Multiple cooperative relays operate in a highly mobile environment and form a virtual antenna array. Multiple independent streams of data can be simultaneously, transmitted in parallel to the destination receiver. Thus a higher spatial multiplexing gain can be obtained. Each relay device that receives the information without errors splits it into multiple streams. For example, if the relay devices receive B symbols and the number of streams is K, each stream contains B/K symbols. Each relay device then generates a random linear combination of all the streams and transmits this output simultaneously with the other relay devices.

Spatial multiplexing gain for a distributed cooperative communications system using randomized coding

An optical network terminal receives, from a user device associated with the optical network terminal, a call to a called party, and checks a table, which may be locally cached in the optical network terminal, for a network location of another optical network terminal associated with the called party. The device also establishes a connection with another user device associated with the other optical network terminal, based on the network location, and exchanges voice data with the other user device associated with the other optical network terminal via the connection.

Peer-to-peer voice over internet protocol

MD-FEC is considered an efficient way to generate a large number of descriptions. However, typically, MD-FEC introduces significant redundancy across streams. MD-FEC encoded streams (descriptions) are adapted based on feedback. Specifically, the bits sent in each description by a supplying peer are adapted based on the number of available descriptions in its receiving peer. The adaptive delivery eliminates unnecessary bits in the original MD-FEC streams (descriptions), and significantly reduces the consumed uplink bandwidth at supplying peers. The saved bandwidth can be used to accommodate more video sessions or for other applications.

Feedback assisted transmission of multiple description, forward error correction coded, streams in a peer-to-peer video system

Data is transmitted from a source wireless device to a destination wireless device by: (a) discovering node-to-node wireless channel conditions in a wireless network; (b) determining at least one of (A) wireless relay devices, (B) modulation schemes, and (C) transmission rates using the discovered node-to-node channel conditions; (c) signaling at least some of the determined information to the determined wireless relay devices; (d) receiving, with each of the wireless relay devices, a transmission of the data from the source wireless device; and (e) transmitting, with each of the wireless relay devices, a randomized, space-time encoded, part of the received data, to the destination device using the signaled at least some of the determined information.

Growing community of inventors

Freehold, NJ, United States of America

Shivendra S Panwar