公开(公告)号：US20170367017A9

公开(公告)日：2017-12-21

申请号：US15335345

申请日：2016-10-26

Applicant: QUALCOMM Incorporated

Inventor： Arnaud Meylan

IPC: H04W36/02 ,  H04L12/823 ,  H04L1/18 ,  H04L12/801

CPC classification number: H04W36/023 ,  H04L1/1841 ,  H04L1/1874 ,  H04L47/10 ,  H04L47/14 ,  H04L47/32 ,  H04L47/34 ,  H04W36/02

Abstract: Techniques for sending packets and maintaining synchronization during handover is described. A user equipment (UE) may be handed over from a source base station to a target base station. The source base station may forward packets for the UE to the target base station, which may receive the packets out of order. In one design, the target base station may determine whether each packet can be sent in order to the UE, send the packet if it can be sent in order, and discard the packet otherwise. In another design, the target base station may re-order packets received within a re-ordering window and may send the re-ordered packets to the UE. In yet another design, the target base station may process each packet received out of order as if the packet is in order, e.g., by incrementing a hyper-frame number (HFN) or re-assigning the packet with a later sequence number.

公开(公告)号：US09819452B2

公开(公告)日：2017-11-14

申请号：US15184277

申请日：2016-06-16

Applicant: Intel Corporation

Inventor： Mark S. Birrittella

IPC: H04L1/18 ,  H04L1/16 ,  H04L1/08 ,  H04L29/08

CPC classification number: H04L1/1657 ,  G06F9/00 ,  H04L1/08 ,  H04L1/1867 ,  H04L1/1874 ,  H04L67/104

Abstract: Methods, apparatus, and systems for implementing a link layer retry protocol utilizing implicit ACKnowledgements (ACKs). Peer link interfaces are configured to facilitate confirmed error-free delivery of link-layer packets through use of implicit ACKs, while also providing retransmission of packets for which errors are detected and guaranteeing the link control data is either successfully received or data transfer over the link is prevented. In conjunction with transmitting packets, reliable packets are copied into sequential slots in a replay buffer. Each link interface tracks the slot at which each reliable packet is buffered, and in response to detection of an error, a retry request is sent to the transmit-side to retransmit the errant packet. The previously buffered copy of the errant packet is retrieved from the replay buffer and retransmitted. Through use of a link roundtrip detection mechanism, absence of a retry request by the time a replay buffer has returned to the slot of a reliable packet (plus a predetermined number of additional transfer cycles, if applicable) provides an implicit ACK that the packet was received without error.

公开(公告)号：US20170310421A1

公开(公告)日：2017-10-26

申请号：US15520585

申请日：2014-11-20

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Jonas FRÖBERG OLSSON ,  Olle ROSIN

IPC: H04L1/00 ,  H04L1/16 ,  H04L1/18 ,  H04L12/46 ,  H04W80/02

CPC classification number: H04L1/0007 ,  H04L1/0083 ,  H04L1/165 ,  H04L1/1685 ,  H04L1/1812 ,  H04L1/1835 ,  H04L1/1848 ,  H04L1/1874 ,  H04L12/4625 ,  H04L2001/0092 ,  H04W80/02

Abstract: A method performed by a first network node, for transmitting a RLC UM, PDU, to a second network node is provided. The first network node and second network node operate in a wireless communications network. When detected that the RLC UM PDU has failed to be transmitted over a first channel, the first network node decides to redirect the RLC UM PDU to be transmitted over a second channel. The first network node divides the RLC UM PDU into two or more re-segmented RLC UM PDUs. The first network node then transmits the re-segmented RLC UM PDUs to the second network node over the second channel. Each re-segmented RLC UM PDU comprises the following indications: (a) that the re-segmented RLC UM PDU is re-segmented, (b) an order indicator related to the re-segmented RLC UM PDU, and (c) whether or not the re-segmented RLC UM PDU is a last re-segmented RLC UM PDU out of the two or more re-segmented RLC UM PDUs.

公开(公告)号：US09774434B2

公开(公告)日：2017-09-26

申请号：US14551961

申请日：2014-11-24

Applicant: Intel Corporation

Inventor： Diana Pani ,  Christopher R. Cave ,  Stephen E. Terry ,  Paul Marinier

IPC: H04L5/00 ,  H04L1/00 ,  H04L1/18 ,  H04W4/18

CPC classification number: H04L5/0055 ,  H04L1/0007 ,  H04L1/1874 ,  H04L1/1896 ,  H04W4/18

Abstract: A method and apparatus for acknowledge mode data (AMD) re-segmentation are disclosed. An AMD protocol data unit (PDU) is generated from at least one RLC SDU. The AMD PDU size is within a flexible maximum AMD PDU size. The original AMD PDU is stored in a retransmission buffer, and transmitted. If transmission of the original AMD PDU fails and the original AMD PDU size is larger than an updated maximum AMD PDU size, the original AMD PDU is segmented to segmented AMD PDUs. If transmission of one of the segmented AMD PDUs fails, the original AMD PDU may be re-segmented to smaller size AMD PDUs.

公开(公告)号：US09742583B2

公开(公告)日：2017-08-22

申请号：US14761293

申请日：2013-07-22

Applicant: ZTE Corporation

Inventor： Aifang Sun ,  Jingwei He ,  Chong Gao ,  Zhihao Ling ,  Zhifei Zhang ,  Xuewen Qi ,  Jianfu Cao ,  Yifeng Yuan

IPC: H04W72/12 ,  H04L12/28 ,  H04L12/64 ,  H04L29/06 ,  H04W76/02 ,  H04L12/861 ,  H04W36/02

CPC classification number: H04L12/2869 ,  H04L1/1874 ,  H04L1/1896 ,  H04L12/287 ,  H04L12/6418 ,  H04L49/90 ,  H04L65/102 ,  H04W36/02 ,  H04W76/14

Abstract: The present invention discloses a method of data retransmission in coordination service transmission and access network gateway thereof. Wherein, the method includes: in coordination service transmission, access network gateway receives the service data requested by the coordination terminal, caches the data and transmits it to the corresponding destination terminal; the access network gateway executes retransmission strategy, and when decides data retransmission is needed, retransmits the cached data to the corresponding destination terminal. The access network gateway is used to receive the service data requested by the coordination terminal, to cache the data and transmit it to the corresponding destination terminal, to retransmit the cached data to the corresponding destination terminal when data retransmission is needed. Using the present invention, to the problem of service data retransmission in coordination service transmission, the service data transmission efficiency is effectively improved.

公开(公告)号：US20170195996A1

公开(公告)日：2017-07-06

申请号：US15308718

申请日：2015-04-30

Applicant: KYOCERA CORPORATION

Inventor： Masato FUJISHIRO

IPC: H04W72/04 ,  H04W24/10 ,  H04W24/02 ,  H04W76/02

CPC classification number: H04W72/042 ,  H04L1/1848 ,  H04L1/1874 ,  H04L1/188 ,  H04W24/02 ,  H04W24/10 ,  H04W72/0426 ,  H04W76/10 ,  H04W76/15 ,  H04W76/18 ,  H04W76/19 ,  H04W76/34 ,  H04W92/20

Abstract: A communication control method according to one embodiment comprises controlling a dual connectivity communication using a master base station configured to establish an RRC connection with a user terminal and a secondary base station configured to provide additional radio resources to the user terminal. The controlling comprises the steps of: detecting, by the user terminal, a radio link failure between the user terminal and the secondary base station; reporting, by the user terminal, the radio link failure to the master base station; and transmitting, by the master base station, a stop instruction signal to the secondary base station.

公开(公告)号：US09699827B2

公开(公告)日：2017-07-04

申请号：US14507358

申请日：2014-10-06

Applicant: QUALCOMM Incorporated

Inventor： Sitaramanjaneyulu Kanamarlapudi ,  Chetan Gopalakrishnan Chakravarthy ,  Arvindhan Kumar ,  Luna Sapna D'Souza ,  Tejas Pravin Sathe

IPC: H04W76/04 ,  H04L1/18

CPC classification number: H04W76/28 ,  H04L1/1812 ,  H04L1/1874 ,  H04L1/1887 ,  H04L1/1896

Abstract: Aspects described herein relate to transmitting hybrid automatic repeat/request (HARQ) data in continuous packet connectivity (CPC) mode. Data is transmitted to a network according to a discontinuous transmit (DTX) cycle in a CPC mode. The CPC mode can be exited, however, based at least in part on detecting available HARQ data for transmission. In this regard, a next transmission opportunity configured for transmitting the available HARQ data is determined, where the next transmission opportunity is not within a transmission time instance defined by the DTX cycle, and the available HARQ data is transmitted during the next transmission opportunity outside of the CPC mode.

公开(公告)号：US09654362B2

公开(公告)日：2017-05-16

申请号：US15082609

申请日：2016-03-28

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Sándor Rácz ,  Szilveszter Nádas

IPC: H04L12/26 ,  H04L1/16 ,  H04L1/18 ,  H04W24/10 ,  H04L1/08 ,  H04L12/801 ,  H04L1/00

CPC classification number: H04L43/0829 ,  H04L1/08 ,  H04L1/1621 ,  H04L1/1642 ,  H04L1/1671 ,  H04L1/1835 ,  H04L1/1848 ,  H04L1/1874 ,  H04L43/04 ,  H04L47/34 ,  H04L2001/0097 ,  H04W24/10

Abstract: A method performed in a first radio base station, RBS, in communication with a radio network controller, RNC. The RNC is configured for multi-flow HSDPA, High-Speed Downlink Packet Access, operation and packet data units, PDUs, are communicated toward a user equipment, UE, node via the first RBS and at least one second RBS. The method comprises: detecting PDU drop events and/or loss events; and communicating information from the RBS to the RNC, notifying of each detected PDU drop event and/or loss event. A corresponding RBS and RNC are also presented.

公开(公告)号：US20170090811A1

公开(公告)日：2017-03-30

申请号：US15372841

申请日：2016-12-08

Applicant: TQ DELTA, LLC

Inventor： Marcos C. Tzannes ,  Michael Lund

IPC: G06F3/06 ,  H04B1/38

CPC classification number: G06F3/0631 ,  G06F3/0611 ,  G06F3/0644 ,  G06F3/0659 ,  G06F3/0665 ,  G06F3/0673 ,  G06F13/1647 ,  H04B1/38 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0071 ,  H04L1/1809 ,  H04L1/1835 ,  H04L1/1874 ,  H04L12/5601 ,  H04L27/2601 ,  H04L45/00 ,  H04L45/72 ,  H04L47/10 ,  H04L49/90 ,  H04L49/901

Abstract: A transceiver is designed to share memory and processing power amongst a plurality of transmitter and/or receiver latency paths, in a communications transceiver that carries or supports multiple applications. For example, the transmitter and/or receiver latency paths of the transceiver can share an interleaver/deinterleaver memory. This allocation can be done based on the data rate, latency, BER, impulse noise protection requirements of the application, data or information being transported over each latency path, or in general any parameter associated with the communications system.

公开(公告)号：US20170085492A1

公开(公告)日：2017-03-23

申请号：US15126481

申请日：2015-03-04

Applicant: Fangying XIAO ,  SHARP KABUSHIKI KAISHA

Inventor： Fangying XIAO ,  Renmao LIU

IPC: H04L12/801 ,  H04L1/18

CPC classification number: H04L47/34 ,  H04L1/1874 ,  H04L47/624

Abstract: The present disclosure provides a method performed by a Packet Data Convergence Protocol (PDCP) entity and the PDCP entity. The method comprises: mapping one or more PDCP Protocol Data Units (PDUs) received out-of-order from a lower layer entity of the PDCP entity to one or more PDCP Service Data Units (SDUs) and storing the PDCP SDUs in a reordering buffer; determining whether sequence numbers of one or more missing PDCP SDUs are smaller than the smaller one of the two maximum sequence numbers among PDCP SDUs received by the PDCP entity from two lower layer entities, respectively; and delivering one or more PDCP SDUs having sequence numbers smaller than the sequence numbers of the missing PDCP SDUs and one or more PDCP SDUs having sequence numbers larger than and consecutive with the sequence numbers of the missing PDCP SDUs, as stored in the reordering buffer, to a higher layer entity of the PDCP entity when the sequence numbers of the missing PDCP SDUs are smaller than the smaller of the maximum sequence numbers.