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公开(公告)号：US11463742B2
公开(公告)日：2022-10-04
申请号：US16907391
申请日：2020-06-22
发明人： Tomas Lundberg , Jing Fu , Gunnar Heikkilä , David Lindero , Junaid Shaikh
IPC分类号： H04N21/234 , H04N21/44 , H04N21/84 , H04N17/00 , H04N21/24 , H04L65/80 , H04N21/238
摘要： Mechanisms for predicting a multimedia session MOS are provided. The multimedia session has a video session and an audio session. The video quality and the audio quality are represented by vectors of per-time-unit scores of video quality and audio quality, respectively. The multimedia session is represented by a vector of the rebuffering start times of each rebuffering event, and a vector of the rebuffering durations of each rebuffering event. Audiovisual quality features are generated from the vectors of per-time-unit scores of video and audio quality. Buffering features are generated from the vector of rebuffering start times of each rebuffering event and the vector of rebuffering durations of each rebuffering event. A multimedia session MOS is then estimated based on the generated audiovisual quality features and the generated buffering features.
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公开(公告)号：US11166178B2
公开(公告)日：2021-11-02
申请号：US15316947
申请日：2014-06-18
发明人： Elena Fersman , Jing Fu , Hongxin Liang , Vlasios Tsiatsis
摘要： Methods and devices for maintaining a device-operated function. A first device initially operates as an active master with responsibility to execute the device-operated function by automatically performing one or more operation tasks according to certain operational parameters and gaining knowledge when performing the operation tasks. Meanwhile, a second device is acting as a passive standby device. When the first device cannot or should not operate as the active master anymore, e.g. due to low battery, the responsibility is transferred to the second device by transferring the operational parameters and the knowledge from the first device to the second device. Then, the second device operates as the active master with responsibility to execute the device-operated function according to the operational parameters and using the knowledge if required.
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3.发明授权公开(公告)号：US11082824B2
公开(公告)日：2021-08-03
申请号：US15322859
申请日：2014-06-30
发明人： Athanasios Karapantelakis , Jing Fu
摘要： The present invention relates to methods and devices for supporting a transfer process of data in wireless communication networks. The transfer process comprises a decision step to relay data based on a comparison between a first data device's requirements on delivery time and a second device's estimate on the next time for obtaining network connectivity. In addition the transfer procedure considers the reliability required for a particular data piece and the probability of successful delivery provided by the relaying device.
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公开(公告)号：US10667324B2
公开(公告)日：2020-05-26
申请号：US16063046
申请日：2016-03-16
发明人： Ying Sun , Anders Johansson , Jing Fu
摘要： The present disclosure provides a method of determining a DTX cause at an access node, comprising: transmitting, to a User Equipment (UE), an Uplink (UL) grant and a Downlink (DL) assignment in a same DL subframe; detecting whether Discontinuous Transmission (DTX) of at least one of UL data to be transmitted in response to the UL grant received by the UE and Hybrid Automatic Repeat Request (HARQ) Acknowledgement (ACK)/Negative Acknowledgement (NACK) to be transmitted in response to DL data related to the DL assignment received by the UE occurs; and determining a cause of the DTX based on a result of the DTX detection. The present disclosure further provides an access node using the method and a computer program product.
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5.发明授权公开(公告)号：US10666529B2
公开(公告)日：2020-05-26
申请号：US15023630
申请日：2016-03-07
发明人： Tomas Lundberg , Jing Fu , Gunnar Heikkilä , Junaid Shaikh
摘要： A method and a scoring node for estimating a user's Quality of Experience, QoE, when a service is delivered in a media stream to the user by means of a communication network. Quality-related parameters pertaining to the service delivery are extracted, and an individual opinion score is determined for each of a set of quality models by applying each respective quality model in the set on the quality-related parameters. An aggregated opinion score is then determined as a weighted average of the individual opinion scores. The aggregated opinion score can then be used as an estimation of the user's QoE for the service delivery, e.g. when evaluating the service and/or the communication network.
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公开(公告)号：US20190124375A1
公开(公告)日：2019-04-25
申请号：US16309790
申请日：2017-06-29
发明人： Tomas Lundberg , Jing Fu , Gunnar Heikkilä , David Lindegren , Junaid Shaikh
IPC分类号： H04N21/234 , H04N21/44 , H04N21/238 , H04N21/24 , H04N21/84 , H04L29/06
摘要： There are provided mechanisms for predicting a multimedia session MOS. The multimedia session comprises a video session and an audio session, wherein video quality is represented by a vector of per-time-unit scores of video quality and wherein audio quality is represented by is a vector of per-time-unit scores of audio quality. The multimedia session is represented by a vector of rebuffering start times of each rebuffering event, a vector of rebuffering durations of each rebuffering event, and an initial buffering duration being the time between an initiation of the multimedia session and a start time of the multimedia session. The method comprises generating audiovisual quality features from the vector of per-time-unit scores of video quality and the vector of per-time-unit scores of audio quality. The audiovisual quality features comprise: a vector of per-time-unit scores of audiovisual quality, calculated as a polynomial function of the vector of per-time-unit scores of video quality and the vector of per-time-unit scores of audio quality; a weighted combination of the per-time-unit scores of audiovisual quality, wherein the weights are exponential functions of a time since the start time of multimedia session and a multimedia session duration; a negative bias representing how a sudden drop in per-time-unit scores of audiovisual quality affects the multimedia session MOS; and a term representing a degradation due to oscillations in the per-time-unit-scores of audiovisual quality. The method comprises generating buffering features from the vector of rebuffering start times of each rebuffering event, calculated from the start time of multimedia session, and the vector of rebuffering durations of each rebuffering event. The method comprises estimating a multimedia session MOS from the generated audiovisual quality features and the generated buffering features.
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公开(公告)号：US10111245B2
公开(公告)日：2018-10-23
申请号：US15320381
申请日：2014-06-26
IPC分类号： H04W72/10 , H04W72/12 , H04L12/865 , H04W4/06
摘要： A method and an associated network element, computer program and computer product, for scheduling communication devices performed in a network element of a wireless network. The wireless network provides wireless communication for the communication devices. The method comprises identifying one or more of the communication devices as providing tethering for one or more tethered devices, determining a respective scheduling weight for the communication device providing tethering and for its one or more tethered devices, and scheduling the communication devices based on the determination.
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公开(公告)号：US10707998B2
公开(公告)日：2020-07-07
申请号：US16070404
申请日：2016-01-20
发明人： Ying Wang , Jing Fu , Liping Wang
摘要： Disclosed is a method performed by a system of a wireless communication network for determining transmission conditions for a real-time media flow to be transmitted wirelessly to a first User Equipment, UE, residing in a first cell served by a first base station of the network. The method comprises obtaining radio network statistics of the first cell, the radio network statistics comprising radio network data for individual of a plurality of UEs in the first cell, UE throughput for individual of the plurality of UEs, and UE packet loss or packet delay for individual of the plurality of UEs, and obtaining, at a second time point occurring later in time than the obtaining of the radio network statistics, radio network data for the first UE. The method further comprises determining a predicted first UE throughput and a predicted first UE packet loss or packet delay based on the obtained radio network statistics of the first cell and on the obtained radio network data for the first UE, and triggering sending of information of the predicted first UE throughput and of the predicted first UE packet loss or excessive packet delay to a sender of the real-time media flow to the first UE. A Forward Error Correction, FEC, optimization module takes the predicted UE packet loss rate, the predicted UE throughput, and adapts the amount of FEC redundancy packets according to the throughput and packet loss rate. Further, the adapted amount of FEC redundancy packets are then used by the sender of the video when transmitting the video.
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公开(公告)号：US10582410B2
公开(公告)日：2020-03-03
申请号：US15527915
申请日：2014-11-20
发明人： Jing Fu , Steven Corroy , Liyi Meng
IPC分类号： H04W28/02 , H04L12/911 , H04L12/835 , H04L12/801 , H04W24/08
摘要： An apparatus comprising a buffer estimation module for estimating if a base station has data buffered for a mobile communication device is provided. The apparatus further comprises a scheduling estimation module for determining how frequently the mobile communication device has been scheduled to receive data from the base station, a radio quality module for determining a radio quality indication of a communication channel between the mobile communication device and the base station, and a throughput estimation module for predicting downlink throughput from the base station to the mobile communication device based on at least output from the buffer estimation module, the frequency estimation module and the radio quality module.
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公开(公告)号：US10531342B2
公开(公告)日：2020-01-07
申请号：US15509663
申请日：2014-09-09
发明人： Åsa Bertze , Steven Corroy , Icaro L. J. Da Silva , Jing Fu , Yu Wang
摘要： A Network Node, a Radio Access node and methods therein for handling and supporting Hand Over, HO, in a wireless communication network are disclosed. The method in a Radio Access node comprises receiving, from a Network Node, a VoIP session notification identifying a traffic flow associated with VoIP related to a UE. The method further comprises receiving, from the Network Node, a VoIP state report for the identified traffic flow, said VoIP state report comprising a determined VoIP state, and a prediction related to a time to a VoIP state change. Further, the method comprises, when the UE is a candidate for HO: deciding whether to delay or to trigger the HO based on the VoIP state and the prediction.
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