Huawei Technologies Co., Limited

Blinq Wireless Inc.

Rockwell Collins, Inc.

Future Wei Technologies, Inc.

Ho Ting Cheng

Hang Zhang

Nimal Gamini Senarath

Radu Bogdan Selea

Aaron Callard

Akram Bin Sediq

Alex Stephenne

Gamini Senarath

Taiwen Tang

Terasan Niyomsataya

Ngoc Dung Dao

Alexandru Moraru

Mohammadhadi Baligh

Liqing Zhang

Vahid Tarokh

Halim Yanikomeroglu

Sorin Alexandru Michnea

Peiying Zhu

Xu Li

Keyvan Zarifi

Ngoc-Dung Dao

Ahikam Aharony

Zhijun Chao

Mark Andrew Hawryluck

Ramy Gohary

Rainer Schoenen

Ovidiu Mihai Leulescu

Jeroen Stroobach

Xiaochang Wu

A system and method for collision avoidance within nodes of an Automatic Link Exchange (ALE) network establishes a handshake between transmitting and receiving nodes for a linked call over an assigned frequency band. The transmitting and receiving nodes mutually determine transmission and reception sub-channel vectors within the assigned frequency band, e.g., for calling and response. Before the linked call commences, and when other scanning stations of the ALE network dwell on the assigned frequency band, the transmitting and receiving nodes transmit collision avoidance protocol data units (PDU) identifying the nodes, the transmission and reception sub-channel vectors, and the duration of the linked call such that scanning nodes may prevent interference with the linked call by avoiding transmission over the identified sub-channels.

System and method for hidden node resolution via collision avoidance in 4G automatic link establishment (ALE) stations

A participating unit (PU; e.g., radio system, communications node) for a fourth generation (4G) automatic link establishment (ALE) network is disclosed. The PU initiates a link quality analysis (LQA) exchange with a callee PU of the network by transmitting a link request. The caller PU receives in response to the link request a link confirmation including callee-side LQA data for the reception of the link request, performing LQA measurements based on the reception. In response to the link request, the caller PU terminates the LQA exchange by transmitting to the callee PU a link termination including encoded caller-side LQA data, so data from both sides of the exchange is stored by both PUs.

4G automatic link establishment (ALE) with improved two-way link quality analysis (LQA) exchange

A control station for a fourth-generation (4G) automatic link establishment (ALE) network is disclosed. In embodiments, the control station is GPS-enabled or has a comparable precise timing source for generating timing information including the minute, second, and millisecond a protocol data unit (PDU) is to begin. The control station has a transceiver assembly for encoding the millisecond data and embedding the encoded millisecond data (as well as the minute and second data) within a Time-of-Day (TOD) Response or comparable time broadcast PDU. The PDU is transmitted to unsynchronized nodes of the 4G ALE network allowing for more precise time synchronization to the control station.

Precise time synchronization for 4G automatic link establishment (ALE) stations

A system and method for transmitting and relaying data packets within an ARQ 3G HDL framework includes populating unused packet positions with unacknowledged packets during retransmission. The unused packet positions are populated according to lowest unacknowledged sequence numbers. Unused packet positions may be populated with multiple copies of the lowest unacknowledged sequence number or some set of the lowest unacknowledged sequence numbers. A set of lowest sequence unacknowledged sequence numbers may be weighted toward the lowest unacknowledged sequence number to increase the probability of the lowest unacknowledged sequence number being received so that the send window can be slid forward.

Selective repeat ARQ enhancement for HDL data transfer

A first radio may be configured to utilize a wideband automatic link establishment (WALE). The first radio may be assigned a first channel bandwidth spanning a first number of sub-channels that is one of even or odd. A second radio may be assigned a second channel bandwidth spanning a second number of sub-channels that is the other of even or odd. A position of the first assigned frequency within a multiple element sub-channel vector for the first radio may be misaligned from a position of a second assigned frequency within the multiple element sub-channel vector for the second radio. The first radio may be configured to initiate a WALE link setup handshake with the second radio by sending a link setup request. The second radio may configure negotiated bands of the second radio to account for an offset of half of the sub-channel.

Automatic link establishment system and method for asymmetric link

A method for 4G Automatic Link Establishment protocol enhancement may include, but is not limited to, determining a first signal-to-noise ratio (SNR) value with a called participating unit (called PU) from a first protocol data unit (PDU) including a first number of transmit level control (TLC) blocks transmitted by a calling participating unit (calling PU), determining a second SNR value corresponding to the first SNR value from a lookup table stored on the called PU, determining a third SNR value with the calling PU from a second PDU including a second number of TLC blocks transmitted by the called PU, determining a fourth SNR value corresponding to the third SNR value from a lookup table stored on the calling PU, and determining a fifth SNR value with the called PU from a third PDU including a third number of TLC blocks transmitted by the calling PU.

System and method for 4G automatic link establishment protocol enhancement

Interference costs on virtual radio interfaces can be modeled as a function of loading in a wireless network to estimate changes in spectral efficiency and/or resource availability that would result from a provisioning decision. In one example, this modeling is achieved through cost functions that are developed from historical and/or simulated resource cost data corresponding to the wireless network. The cost data may include interference data, spectral efficiency data, and/or loading data for various links over a common period of time (e.g., a month, a year, etc.), and may be analyzed and/or consolidated to obtain correlations between interference costs and loading on the various links in the network. As an example, a cost function may specify an interference cost on one virtual link as a function of loading on one or more neighboring virtual links.

Service provisioning using abstracted network resource requirements

Predicting mobile station migration between geographical locations of a wireless network can be achieved using a migration probability database. The database can be generated based on statistical information relating to the wireless network, such as historical migration patterns and associated mobility information (e.g., velocities, bin location, etc.). The migration probability database consolidates the statistical information into mobility prediction functions for estimating migration probabilities/trajectories based on dynamically reported mobility parameters. By example, mobility prediction functions can compute a likelihood that a mobile station will migrate between geographic regions based on a velocity of the mobile station. Accurate mobility prediction may improve resource provisioning efficiency during admission control and path selection, and can also be used to dynamically adjust handover margins.

Methods and systems for admission control and resource availability prediction considering user equipment (UE) mobility

Systems and methods are disclosed for networking planning for fixed backhaul networks comprising a plurality of hubs, each serving one or more RBMs. The method comprises one or more of terrain pathloss (PL) and antenna gain prediction; network design comprising site association, hub dimensioning and pointing; and optimization of small cell (SC) deployment. PL prediction is based on correlation of user input parameters with reference use cases for channel models for each of downtown, urban, and suburban deployment scenarios. Rapid and effective network planning is achieved with limited input data, even in the absence of high resolution digital maps or building polygons, by selecting the channel model having a highest correlation with available environmental parameters. Optimization of network topology design, system design, and SC deployment, with both access link and backhaul link evaluation, is based on optimization of a sum-utility function across all links for feasible SC site locations.

Method and system for network planning in fixed wireless backhaul networks

In one embodiment, a method for a method of estimating an effective bandwidth of a traffic source includes obtaining a first traffic pattern from a first traffic source. Also, the method includes setting a first effective bandwidth between a mean data rate of the first traffic source and a peak data rate of the first traffic source. Additionally, the method includes determining a first outage rate of the first traffic source in accordance with the first traffic pattern and the first effective bandwidth.

System and method for estimating an effective bandwidth

Methods and systems for providing joint power control (PC) and scheduling in a wireless network are provided. In one example, a method includes generating a near-optimal power pattern for PC and scheduling in accordance with long term channel statistics. The near-optimal PC solution may be generated by first generating a set of possible power patterns in accordance with likely scheduling scenarios, then statistically narrowing the set of possible power patterns to identify the most commonly used power patterns, and finally selecting one of the most commonly used power patterns as the near-optimal power pattern. In another example, a table of optimal PC solutions are provided for performing distributed PC and scheduling in an adaptive and/or dynamic manner.

Systems and methods for downlink power control and scheduling in a wireless network

Systems and methods are disclosed for signaling in a point-to-multi-point (PtMP) fixed wireless backhaul network, in which each Hub serves a plurality of Remote Backhaul Modules (RBM). A Hub serves one RBM in each subframe per carrier in TDMA fashion, comprising transmitting a 1 ms TDD frame comprising one DL subframe and one UL subframe and gaps necessary to switch the radio direction and accommodate round trip delay. DL and UL frames may be allocated to different RBMs, with a single RBM in each DL or UL subframe per carrier per antenna beam. Each Hub keeps an independent context for each of its served RBMs. A DL ranging frame carries general information. A UL ranging frame carries a ranging opportunity. RBMs not scheduled in the current timeslot continue to receive a PHY control channel from the serving Hub, and update their parameters or links for link adaptation.

System and method of signalling for point-to-multipoint (PtMP) transmission in fixed wireless backhaul networks

Systems and methods reduce redundancy in a data representation. The data is divided into a plurality of data portions. The data portions are used to encode a plurality of compressed data portions, wherein the compressed data portions correspond to a subset of the data portions and comprise less redundant data than the subset of the data portions. The compressed data portions are also encoded in accordance with data in the remaining data portions. The compressed data portions are transmitted instead of the subset of the data portions with the remaining data portions according to a sequence of data portions. Each of the compressed data portions is transmitted upon receiving an acknowledgment message that indicates successful transmission of a previous data portion or compressed data portion in the sequence of data portions.

Systems and methods for data representation and transportation

A system and method for joint scheduling in a dual-carrier fixed wireless backhaul network is disclosed, wherein the primary carrier is a licensed band, and the secondary carrier is a lower cost shared band or an unlicensed band. The network comprises a plurality of Hub modules, each serving a cluster of one or more Remote backhaul modules (RBMs). A special frame structure and a control channel on the primary carrier carries control signalling messages for RBMs assigned to either the primary or secondary carrier. RBMs with a performance metric, such a spectral efficiency, above a threshold are assigned to the primary carrier. Other RBMs are assigned the secondary carrier, and a channel assignment is then performed. A transmission mode is determined based on instantaneous channel conditions, to optimize overall system performance across a network neighborhood and meet RBM quality of service requirements. A centralized server/processing unit co-ordinates dual carrier joint scheduling functions.

System and method for joint scheduling in dual-carrier wireless backhaul networks

A method and system is disclosed for clock synchronization in a wireless backhaul network, based on the IEEE1588 Precision Time Protocol (PTP). The network comprises a plurality of hubs, each hub serving one or more remote backhaul modules. Each hub comprises a slave clock, which communicates with a master clock through forward and reverse links. The method comprises, for each hub, estimating the frequency drift {circumflex over (&#x3b1;)} and offset {circumflex over (&#x3b2;)} from the forward and reverse links between the master and slave clock, estimating the accuracy of {circumflex over (&#x3b1;)} and {circumflex over (&#x3b2;)}, determining the least congested link, and adjusting the frequency of the slave clock based on {circumflex over (&#x3b1;)} and {circumflex over (&#x3b2;)} from the least congested link. A fixed or variable time window size is selected to achieve a desired accuracy of {circumflex over (&#x3b1;)} and {circumflex over (&#x3b2;)}. The method may comprise estimating a maximum holdover time for maintaining synchronization with a desired confidence level.

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Stittsville, Canada

Ho Ting Cheng