公开(公告)号：US09813195B2

公开(公告)日：2017-11-07

申请号：US14652885

申请日：2013-12-03

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

Inventor： Ayodele Damola ,  Bo Zhang

IPC: H04L1/18 ,  H04W76/00 ,  H04L1/00 ,  H04W84/04

CPC classification number: H04L1/1809 ,  H04L1/0076 ,  H04L1/1845 ,  H04L2001/0093 ,  H04W76/40 ,  H04W84/042

Abstract: A wireless receiving device and a method for receiving a transmission from a transmitting device following a broadcast transmission of a plurality of packets are provided. During the broadcast transmission, packets successfully received have been acknowledged and stored in a memory associated with the receiving device and unsuccessfully received packets have been negatively acknowledged. The method comprises receiving a retransmission of a packet from the transmitting device and sending, to the transmitting device, an acknowledge, ACK, message with respect to the received retransmitted packet. The method further comprises decoding the received retransmitted packet using stored previously successfully decoded packets, wherein if the received retransmitted packet is successfully decoded then the method comprises decoding stored previously partially decoded packets using the successfully decoded packet. The method also comprises storing the successfully decoded packet and/or the partially decoded packet.

公开(公告)号：US20170288820A1

公开(公告)日：2017-10-05

申请号：US15625803

申请日：2017-06-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Petteri Kela ,  Yinggang Du ,  Johan Christer Qvarfordt

IPC: H04L1/18

CPC classification number: H04L1/1845 ,  H04L1/1848 ,  H04L1/1874 ,  H04L1/1887

Abstract: A transmitter (110), a receiver (120) and a method (700) for communicating data packets. The method (700) comprises receiving (701) a data packet and determining (702) if it is a re- or new transmission; and, when it is a retransmission: combining (703) the received (701) data packet with oldest unsuccessfully decoded data packet stored in a second memory (850), and decoding (704) the combined (703) data packet; when it is a new transmission: decoding (704) the received (701) data packet; checking (705) if the decoding (704) is successful; deleting (706) the oldest stored data packet in the first memory (840); storing (707) the decoded (704) data packet in the first memory (840) when the decoding (704) is successful or storing (707) the decoded (704) data packet in the second memory (850) when the decoding (704) is not successful; and transmitting (708) feed-back information to the transmitter (110).

公开(公告)号：US20170280447A1

公开(公告)日：2017-09-28

申请号：US15510924

申请日：2016-02-17

Applicant: NTT DOCOMO, INC.

Inventor： Tooru Uchino ,  Kunihiko Teshima ,  Kazuki Takeda ,  Hideaki Takahashi

IPC: H04W72/04 ,  H04W16/32 ,  H04W28/02 ,  H04L5/00

CPC classification number: H04W72/0446 ,  H04L1/00 ,  H04L1/1845 ,  H04L1/1864 ,  H04L5/001 ,  H04L5/0055 ,  H04W16/32 ,  H04W28/02 ,  H04W80/02 ,  H04W88/02 ,  H04W88/08

Abstract: A user apparatus communicates with a base station in a mobile communication system which includes cells including a first cell and a second cell which uses a TTI different from that of the first cell, includes a reception unit with a buffer for, in the case where decoding of downlink data received from the base station has failed, storing the downlink data in the buffer, and combining the downlink data stored in the buffer and retransmitted data transmitted from the base station based on acknowledgment information for the downlink data, and decoding the combined result; and a transmission unit for transmitting the acknowledgment information for the downlink data to the base station. The reception unit includes a buffer control unit for dividing the buffer with a dividing number based on the TTIs of the first and second cells, and storing the downlink data in divided areas of the buffer.

公开(公告)号：US09768912B2

公开(公告)日：2017-09-19

申请号：US14493953

申请日：2014-09-23

Applicant: Cavium, Inc.

Inventor： Mehran Nekuii

IPC: G06F3/00 ,  G06F13/12 ,  G06F13/00 ,  G06F12/00 ,  G06F12/14 ,  H04L1/00 ,  H03M13/09 ,  H03M13/45 ,  H03M13/00

CPC classification number: H04L1/0045 ,  H03M13/09 ,  H03M13/45 ,  H03M13/6306 ,  H03M13/6594 ,  H04L1/1845

Abstract: A process capable of employing compression and decompression mechanism to receive and decode soft information is disclosed. The process, in one aspect, is able to receive a data stream formatted with soft information from a communication network such as a wireless network. After identifying a set of bits representing a first logic value from a portion of the data stream in accordance with a predefined soft encoding scheme, the set of bits is compressed into a compressed set of bits. The compressed set of bits which represents the first logic value is subsequently stored in a local memory.

公开(公告)号：US20170264399A1

公开(公告)日：2017-09-14

申请号：US15606886

申请日：2017-05-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ying Li ,  Aris Papasakellariou

IPC: H04L1/18 ,  H04L1/00 ,  H04L1/08 ,  H04W52/02

CPC classification number: H04L1/1812 ,  H04L1/0072 ,  H04L1/08 ,  H04L1/1845 ,  H04L1/1858 ,  H04L1/189 ,  H04W52/0212 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/21 ,  Y02D70/24 ,  Y02D70/25

Abstract: Methods and apparatus are provided for a base station to transmit and for a User Equipment (UE) to receive repetitions of an enhanced physical downlink control channel (EPDCCH). Time and frequency resources for EPDCCH repetitions are defined together with restrictions in time resources to provide UE power savings. Time and frequency resources are also defined for repetitions of a physical downlink shared channel (PDSCH) transmission and for repetitions of a physical uplink shared channel (PUSCH) transmission. Methods and apparatus are also provided for the UE to transmit and for the base station to receive acknowledgement information in repetitions of a physical uplink shared channel (PUCCH).

公开(公告)号：US20170223480A1

公开(公告)日：2017-08-03

申请号：US15484898

申请日：2017-04-11

Applicant: INTEL IP CORPORATION

Inventor： Seunghee Han ,  Gang Xiong

IPC: H04W4/00 ,  H04L1/18 ,  H04L5/16

CPC classification number: H04W4/70 ,  H04L1/0013 ,  H04L1/1812 ,  H04L1/1822 ,  H04L1/1845 ,  H04L5/16 ,  H04L67/12 ,  H04L67/2852

Abstract: A machine type communication (MTC) device is configured to communicate through a long term evolution (LTE) network. The MTC device include a wireless transceiver to receive a signal through the LTE network, a soft buffer configured to store a plurality of soft channel bits for up to a maximum number of hybrid automatic retransmission request (HARQ) processes, and a signal processing unit. The signal processing unit is configured to determine a total number of soft channel bits based at least on the maximum number of HARQ processes, and to use limited buffer rate matching (LBRM) to store a reduced number of the total number of soft channel bits in the soft buffer.

公开(公告)号：US20170207884A1

公开(公告)日：2017-07-20

申请号：US15404072

申请日：2017-01-11

Applicant: QUALCOMM Incorporated

Inventor： Jing JIANG ,  Naga BHUSHAN ,  Joseph Binamira SORIAGA ,  Tingfang JI ,  John Edward SMEE ,  Krishna Kiran MUKKAVILLI ,  Lei KE

IPC: H04L1/18 ,  H04L1/00 ,  H04L1/08

CPC classification number: H04L1/1835 ,  H04L1/0061 ,  H04L1/08 ,  H04L1/1816 ,  H04L1/1819 ,  H04L1/1841 ,  H04L1/1845 ,  H04L1/208

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for management of hybrid automatic repeat request (HARQ) log likelihood ratio (LLR) and reordering buffers in wireless communication systems. According to certain aspects, a method for reducing buffer overhead that may be performed by a wireless node is provided. The method generally includes receiving one or more packets of at least one of an initial transmission or a retransmission; forming one or more log likelihood ratios (LLRs) based on the one or more packets; compressing the one or more LLRs by quantizing the one or more LLRs; and buffering the one or more compressed LLRs.

公开(公告)号：US20170195088A1

公开(公告)日：2017-07-06

申请号：US15313566

申请日：2016-02-23

Applicant: NTT DOCOMO, INC.

Inventor： Tooru Uchino ,  Kazuki Takeda ,  Hideaki Takahashi

IPC: H04L1/18 ,  H04W72/04

CPC classification number: H04L1/1861 ,  H04L1/1822 ,  H04L1/1845 ,  H04L1/1896 ,  H04W72/0413 ,  H04W72/0446

Abstract: Techniques for controlling HARQ processes in uplink communication to implement low latency communication are disclosed. One aspect of the present invention relates to user equipment, comprising: a transmission and reception unit configured to transmit and receive radio signals to/from a base station; and an HARQ process control unit configured to control multiple HARQ processes for uplink communication with the base station, wherein the HARQ process control unit asynchronously transmits uplink data from the multiple HARQ processes to the base station in accordance with a predetermined transmission method allowing the base station to identify a transmitting HARQ process of received uplink data.

公开(公告)号：US20170019815A1

公开(公告)日：2017-01-19

申请号：US15280855

申请日：2016-09-29

Applicant: LG ELECTRONICS INC.

Inventor： Seung June YI ,  Woon Young YEO ,  So Young LEE

IPC: H04W28/14 ,  H04L29/06

CPC classification number: H04W28/14 ,  H04B7/0604 ,  H04B7/15507 ,  H04B7/15535 ,  H04L1/0071 ,  H04L1/06 ,  H04L1/08 ,  H04L1/1841 ,  H04L1/1845 ,  H04L1/1848 ,  H04L5/0023 ,  H04L5/0042 ,  H04L5/0044 ,  H04L5/0083 ,  H04L27/2602 ,  H04L47/10 ,  H04L47/14 ,  H04L47/28 ,  H04L47/34 ,  H04L69/28 ,  H04L2001/0096 ,  H04W24/02 ,  H04W52/143 ,  H04W52/225 ,  H04W52/24 ,  H04W52/241 ,  H04W52/242 ,  H04W52/245 ,  H04W52/46

Abstract: A timer for processing data blocks is proposed for a receiver of a mobile communications system. If the timer is not running, the timer is started based a data block. The data block has a sequence number higher than a sequence number of another data block that was first expected to be received. If the timer is stopped or expires, the timer is based on a highest sequence number of a data block among data blocks that cannot be delivered to a higher entity. The timer can be used to prevent a stall condition in mobile communications.

Abstract translation: 针对移动通信系统的接收机提出了一种用于处理数据块的定时器。 如果定时器未运行，则基于数据块启动定时器。 数据块的序列号高于首次预期接收的其他数据块的序列号。 如果定时器停止或到期，则定时器基于不能传送到较高实体的数据块中数据块的最高序列号。 定时器可用于防止移动通信中的停顿状态。

公开(公告)号：US20160380724A1

公开(公告)日：2016-12-29

申请号：US15173206

申请日：2016-06-03

Applicant: QUALCOMM Incorporated

Inventor： Durga Prasad Malladi ,  Yongbin Wei ,  Taesang Yoo ,  Siddhartha Mallik ,  Jing Sun

IPC: H04L1/00 ,  H04W84/04 ,  H03M13/45 ,  H04B17/336

CPC classification number: H04L1/0045 ,  H03M13/45 ,  H04B17/336 ,  H04L1/1812 ,  H04L1/1835 ,  H04L1/1845 ,  H04W84/042

Abstract: Methods, systems, and devices for soft hybrid automatic repeat request operation in wireless communication are described. A user equipment (UE) may fail to decode a received signal, for example. The UE may store a portion of the signal in a buffer if the signal size is greater than the buffer size; otherwise, the UE may store the entire signal in the buffer. The UE may then receive a second signal and combine the second signal with the stored portion of the first signal; the combined signal may be larger than the buffer size. This combined signal may, for example, have a code rate less than the first signal. The UE may perform a second decoding attempt on the combined signal. The UE may determine that the second decoding attempt failed and may store a portion of the combined signal in the buffer.

Abstract translation: 描述了用于无线通信中的软混合自动重传请求操作的方法，系统和设备。 例如，用户设备（UE）可能无法解码所接收的信号。 如果信号大小大于缓冲器大小，则UE可以将该信号的一部分存储在缓冲器中; 否则，UE可以将整个信号存储在缓冲器中。 然后，UE可以接收第二信号并将第二信号与存储的第一信号的部分组合; 组合信号可能大于缓冲器大小。 该组合信号可以例如具有小于第一信号的码率。 UE可以对组合信号执行第二解码尝试。 UE可以确定第二解码尝试失败并且可以将组合信号的一部分存储在缓冲器中。