公开(公告)号：US11563829B2

公开(公告)日：2023-01-24

申请号：US16790731

申请日：2020-02-14

Applicant: MediaTek Inc.

Inventor： Per Johan Mikael Johansson ,  Mukesh Chouhan ,  Pradeep Jose ,  Pavan Santhana Krishna Nuggehalli

IPC: H04L69/04 ,  H04W28/06 ,  H04L12/46 ,  H04L69/22

Abstract: Various examples and schemes pertaining to simple Ethernet header compression are described. A first network node transmits a first packet with a full header to a second network node. The first network node determines whether a header compression context for the full header has been established by the second network node. In response to determining that the header compression context for the full header has been established by the second network node, the first network node transmits a second packet with a compressed header to the second network node. In response to determining that the header compression context for the full header has not been established by the second network node, the first network node transmits the second packet or a third packet with the full header to the second network node.

公开(公告)号：US10536878B2

公开(公告)日：2020-01-14

申请号：US15928579

申请日：2018-03-22

Applicant: Mediatek Inc.

Inventor： Yu-Syuan Jheng ,  Pavan Santhana Krishna Nuggehalli ,  Pradeep Jose ,  Chia-Chun Hsu

IPC: H04W28/04 ,  H04W76/20 ,  H04W76/28 ,  H04L5/00 ,  H04W76/15 ,  H04W28/02

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE receives a radio bearer configuration. The UE also configures, based on the received radio bearer configuration, a radio bearer including a first logical channel on a first carrier and a second logical channel on a second carrier. The UE further determines whether to activate the radio bearer to perform duplication. In response to a determination to activate the radio bearer to perform duplication, the UE communicates a first packet on the first logical channel and communicates a duplicated first packet on the second logical channel.

公开(公告)号：US10524256B2

公开(公告)日：2019-12-31

申请号：US15473844

申请日：2017-03-30

Applicant: MEDIATEK INC.

Inventor： Guan-Yu Lin ,  Per Johan Mikael Johansson ,  Pavan Santhana Krishna Nuggehalli ,  Chia-Chun Hsu

IPC: H04L29/06 ,  H04W72/04 ,  H04W24/08 ,  H04W24/10 ,  H04L12/801 ,  H04L12/841 ,  H04L12/835 ,  H04W72/12

Abstract: A method of adaptive transmission time interval (TTI) tuning based on TCP information is proposed. First, a procedure for TCP information delivery between eNB and TCP sender/TCP receiver is disclosed. The TCP information comprises TCP status, TCP congestion window (CWND) size, TCP round trip delay, TCP SS threshold, TCP index, and TCP event indication. Second, various methods for eNB to configure TTI with UE TCP information and/or buffer information are disclosed. A first method is saturation detection which includes buffer status based saturation detection and CWND based saturation detection. A second method is Greedy Buffer Clearing. A third method is TCP state based TTI selection method.

公开(公告)号：US20190289665A1

公开(公告)日：2019-09-19

申请号：US16353491

申请日：2019-03-14

Applicant: MediaTek Inc.

Inventor： Weidong Yang ,  Chia-Chun Hsu ,  Yih-Shen Chen ,  Pavan Santhana Krishna Nuggehalli ,  Lung-Sheng Tsai ,  Yuanyuan Zhang

IPC: H04W80/02 ,  H04W72/04

Abstract: A first network node receives downlink signaling from a second network node in a first occasion, received on a first carrier in a first time slot, and a second occasion, which is received either on the first carrier in a second time slot after the first time slot or on a second carrier in the first time slot or the second time slot. A MAC control element (CE) in the downlink signaling received in the first and second occasions contain a first timing padding value and a second timing padding value, respectively. A predetermined time slot is equally indicated by the first time slot plus the first timing padding value as well as by the second time slot plus the second timing padding value. The first network node effects one or more configurations in the predetermined time slot responsive to receiving the downlink signaling in the first and second occasions.

公开(公告)号：US20180324631A1

公开(公告)日：2018-11-08

申请号：US15971093

申请日：2018-05-04

Applicant: Mediatek Inc.

Inventor： Yu-Syuan Jheng ,  Pavan Santhana Krishna Nuggehalli ,  Chia-Chun Hsu

IPC: H04W28/02 ,  H04W36/00 ,  H04W36/08 ,  H04W72/12 ,  H04W72/02 ,  H04W76/27 ,  H04W68/02 ,  H04W72/04 ,  H04L5/00 ,  H04W36/16

CPC classification number: H04W28/0263 ,  H04L1/1812 ,  H04L5/0055 ,  H04W28/0268 ,  H04W36/0016 ,  H04W36/0022 ,  H04W36/08 ,  H04W36/165 ,  H04W68/02 ,  H04W72/02 ,  H04W72/042 ,  H04W72/1263 ,  H04W76/27

Abstract: In an aspect of the disclosure, an apparatus is provided. The apparatus receives a downlink data packet and determines a service data flow associated with the downlink data packet. The apparatus extracts, from the downlink data packet, a Non-Access Stratum (NAS) Reflective QoS Indication (RQI) indicator that instructs the UE to map a service data flow to the QoS flow. The apparatus further extracts, from the downlink data packet, a Quality of Service (QoS) flow identifier identifying a QoS flow. The apparatus generates a first NAS mapping that maps the service data flow to the QoS flow, in response to a determination that the service data flow is not mapped to the QoS flow at the apparatus. The apparatus further transmits, in accordance with the first NAS mapping, an uplink data packet associated with the service data flow through the QoS flow.

公开(公告)号：US10070461B2

公开(公告)日：2018-09-04

申请号：US15152733

申请日：2016-05-12

Applicant: MEDIATEK INC.

Inventor： Pavan Santhana Krishna Nuggehalli ,  Chie-Ming Chou ,  Chia-Chun Hsu

IPC: H04W48/20 ,  H04W74/08 ,  H04W48/16 ,  H04L12/46 ,  H04W72/08 ,  H04W72/10 ,  H04W84/12 ,  H04W84/04 ,  H04W88/06 ,  H04L5/00 ,  H04W76/27

CPC classification number: H04W74/08 ,  H04L5/001 ,  H04L12/4645 ,  H04W48/16 ,  H04W72/085 ,  H04W72/10 ,  H04W76/27 ,  H04W84/042 ,  H04W84/12 ,  H04W88/06

Abstract: LTE-WLAN aggregation (LWA) at the radio access network level promises significant gain in system capacity and user quality of experience (QoE). In order to support QoS over LWA, there is a need to develop mechanisms to ensure that the access category (AC) classification chosen by a wireless device (AP in the case of downlink, and UE in case of uplink) is consistent with the QoS requirements of the EPS bearer/DRB and/or subscriber profile to which the traffic belongs. The cellular LTE network can provision QoS for both downlink and uplink data flows that are transferred using LWA access.

公开(公告)号：US09900911B2

公开(公告)日：2018-02-20

申请号：US15152750

申请日：2016-05-12

Applicant: MEDIATEK INC.

Inventor： Pavan Santhana Krishna Nuggehalli ,  Chie-Ming Chou ,  Chia-Chun Hsu

IPC: H04W4/00 ,  H04W74/08 ,  H04W48/16 ,  H04L12/46 ,  H04W72/08 ,  H04W72/10 ,  H04W76/04 ,  H04W84/12 ,  H04W84/04 ,  H04W88/06 ,  H04L5/00

CPC classification number: H04W74/08 ,  H04L5/001 ,  H04L12/4645 ,  H04W48/16 ,  H04W72/085 ,  H04W72/10 ,  H04W76/27 ,  H04W84/042 ,  H04W84/12 ,  H04W88/06

Abstract: LTE-WLAN aggregation (LWA) at the radio access network level promises significant gain in system capacity and user quality of experience (QoE). In order to support QoS over LWA, there is a need to develop mechanisms to ensure that the access category (AC) classification chosen by a wireless device (AP in the case of downlink, and UE in case of uplink) is consistent with the QoS requirements of the EPS bearer/DRB and/or subscriber profile to which the traffic belongs. The cellular LTE network can provision QoS for both downlink and uplink data flows that are transferred using LWA access.

公开(公告)号：US20170332317A1

公开(公告)日：2017-11-16

申请号：US15593323

申请日：2017-05-12

Applicant: Mediatek Inc.

Inventor： Pavan Santhana Krishna Nuggehalli

IPC: H04W48/18 ,  H04W74/00 ,  H04W76/04 ,  H04W84/12 ,  H04J11/00 ,  H04L29/08

CPC classification number: H04W48/18 ,  H04J11/0069 ,  H04L69/14 ,  H04L69/18 ,  H04L69/324 ,  H04W48/16 ,  H04W74/004 ,  H04W76/15 ,  H04W76/27 ,  H04W84/12 ,  H04W88/06

Abstract: Apparatus and methods are provided for LWA uplink routing. In one novel aspect, signaling of an address from the eNB to the UE to enable the UE to populate Address-3 of the MAC header to enable layer-2 forwarding of uplink LWA PDUs from the WLAN AP to an appropriate network entity that implements part or the whole WT functionalities. In one embodiment, the network entity is a WT node, or the eNB or a node aggregating multiple connections to a WT node. In one embodiment, the RRC signaling is used to send the WT node MAC address where the RRC signaling message is a PDCP-Config message or a WLAN-MobilityConfig message. In one embodiment, multiple WT nodes are connected with the WLAN AP. The eNB selects one WT node or the UE selects one WT node to populate the address-3 of the MAC header.

公开(公告)号：US09788242B2

公开(公告)日：2017-10-10

申请号：US15015382

申请日：2016-02-04

Applicant: MEDIATEK INC.

Inventor： Pavan Santhana Krishna Nuggehalli ,  Chia-Chun Hsu ,  Chie-Ming Chou

IPC: H04W4/00 ,  H04W36/00 ,  H04W36/14 ,  H04W48/08 ,  H04W84/12 ,  H04W88/06

CPC classification number: H04W36/0022 ,  H04W36/0061 ,  H04W36/0072 ,  H04W36/0094 ,  H04W36/14 ,  H04W48/08 ,  H04W84/12 ,  H04W88/06

Abstract: Apparatus and methods are provided for selection and data aggregation for the LWA. In one novel aspect, the UE connected with a first RAN receives a LWA assistance configuration and selects a second RAN based on the LWA assistance configuration. The UE aggregates data traffic from the first RAN and the selected second RAN. In one embodiment, the information request-and-response procedure is used, which allows the first RAN to query the UE about its second RAN association status. In another embodiment, the selection request-and-response procedure is used, which allows the first RAN to exercise some control over which base station of the second RAN is selected by the UE and for the UE to send relevant information about its second RAN connectivity to the first RAN. In another novel aspect, the UE selects a DRB based on the LWA DRB configuration through either a NAS procedure or an operator configuration.

公开(公告)号：US20170290005A1

公开(公告)日：2017-10-05

申请号：US15473844

申请日：2017-03-30

Applicant: MEDIATEK INC.

Inventor： Guan-Yu Lin ,  Per Johan Mikael Johansson ,  Pavan Santhana Krishna Nuggehalli ,  Chia-Chun Hsu

IPC: H04W72/04 ,  H04W24/10 ,  H04W24/08 ,  H04L29/06

Abstract: A method of adaptive transmission time interval (TTI) tuning based on TCP information is proposed. First, a procedure for TCP information delivery between eNB and TCP sender/TCP receiver is disclosed. The TCP information comprises TCP status, TCP congestion window (CWND) size, TCP round trip delay, TCP SS threshold, TCP index, and TCP event indication. Second, various methods for eNB to configure TTI with UE TCP information and/or buffer information are disclosed. A first method is saturation detection which includes buffer status based saturation detection and CWND based saturation detection. A second method is Greedy Buffer Clearing. A third method is TCP state based TTI selection method.