公开(公告)号：US09693258B2

公开(公告)日：2017-06-27

申请号：US14512594

申请日：2014-10-13

Applicant: Telefonaktiebolaget L M Ericsson (publ)

Inventor： Hongwei Wang ,  Marco Belleschi ,  Björn Nordström

IPC: H04W28/02 ,  H04L1/00 ,  H04L12/851

CPC classification number: H04W28/0236 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0018 ,  H04L47/24 ,  H04W28/0289

Abstract: A method in a base station for adapting link adaptation of a transmission between a user equipment and the base station is provided. The link adaptation relates to an initial value of a Block Error Rate, BLER, related to the transmission. The base station decides that the user equipment is in congestion responsive to a scheduling bit rate for the transmission in relation to a rate of data packets arriving to or being sent by the user equipment being below a first threshold. Responsive to the user equipment being in congestion, the base station adapts the link adaptation by increasing the value of the BLER of the link adaptation in relation to the initial value, until the user equipment is out of congestion or until the base station detects that any one of the user equipment and the base station tries to send high priority data.

公开(公告)号：US09692624B2

公开(公告)日：2017-06-27

申请号：US14723695

申请日：2015-05-28

Applicant: BROADCOM CORPORATION

Inventor： Thomas J. Kolze ,  Bruce J. Currivan

IPC: H04L27/00 ,  H04L27/34 ,  H04L1/00 ,  H04L1/24 ,  H04L27/36 ,  H04L27/26

CPC classification number: H04L27/0008 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/24 ,  H04L27/2604 ,  H04L27/3488 ,  H04L27/362

Abstract: A communication device is configured to perform symbol mapping of bits to generate modulation symbols using one or more modulations. The device may employ a blended modulation composed of bit labels or symbols having different numbers of bits per symbol and different modulations. For example, the device may symbol map bit labels/symbols having first number of bits per symbol to first modulation, and the device may symbol map labels/symbols having second number of bits per symbol to second modulation. The device may be configured to perform forward error correction (FEC) or error correction code (ECC) and coding of information bits to generate coded bits that subsequently undergo symbol mapping. The device may be configured to operate based on different operational modes based on substantially uniform steps of rates, or bits per symbol, and energy per bit or symbol to noise spectral density ratio (Eb/N0 or Es/N0).

公开(公告)号：US20170180099A1

公开(公告)日：2017-06-22

申请号：US15129621

申请日：2015-03-27

Applicant: LG ELECTRONICS INC.

Inventor： Bonghoe KIM ,  Yunjung YI

IPC: H04L5/00 ,  H04B7/06 ,  H04W24/08 ,  H04L1/00 ,  H04L27/34

CPC classification number: H04L5/0057 ,  H04B7/0626 ,  H04B7/0632 ,  H04L1/00 ,  H04L1/0003 ,  H04L1/0007 ,  H04L1/0015 ,  H04L1/0016 ,  H04L1/0026 ,  H04L1/1671 ,  H04L5/0055 ,  H04L27/0012 ,  H04L27/34 ,  H04L27/345 ,  H04W24/08

Abstract: The present invention relates to a wireless access system, more particularly, to methods for transceiving channel state information (CSI) for supporting 256 quadrature amplitude modulation (QAM) scheme and apparatuses for supporting the methods. A method by which a terminal capable of supporting 256 QAM in a wireless access system reports CSI, according to one embodiment of the present invention, comprises the steps of: receiving a higher-layer signal for configuring a first rank indicator (RI) reference process in the terminal; measuring a channel quality for one or more CSI processes associated with the first RI reference process configured in the terminal; selecting a channel quality indication (CQI) index by using only a first CQI table or a second CQI table for the one or more CSI processes; and reporting the CSI including the CQI index. Here, the first CQI table can support up to 64 QAM and the second CQI table can support up to 256 QAM, and only the same CQI table can be applied to the one or more CSI processes associated with the first RI reference process.

公开(公告)号：US09673875B1

公开(公告)日：2017-06-06

申请号：US15052206

申请日：2016-02-24

Applicant: Marvell International LTD.

Inventor： Hongyuan Zhang ,  Rohit U. Nabar ,  Sudhir Srinivasa

IPC: H04B7/04 ,  H04L27/26 ,  H04L25/03 ,  H04B7/0408 ,  H04B7/0456 ,  H04B7/06 ,  H04B7/0413 ,  H04B7/0417

CPC classification number: H04B7/0408 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0456 ,  H04B7/0617 ,  H04K1/10 ,  H04K3/224 ,  H04K2203/32 ,  H04L1/0003 ,  H04L1/0015 ,  H04L1/0026 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/0091 ,  H04L25/03343 ,  H04L27/0008 ,  H04L27/2601 ,  H04L27/2626 ,  H04L27/2636 ,  H04L27/2646

Abstract: A first device including a receiver, a steering module, and a transmitter. The receiver receives a first signal transmitted using a first modulation scheme from a second device. The steering module obtains a steering matrix from the first signal transmitted using the first modulation scheme from the second device. The transmitter transmits a second signal using a second modulation scheme to the second device by reusing the steering matrix obtained from the first signal transmitted using the first modulation scheme from the second device. The first modulation scheme and the second modulation scheme are selected from a plurality of orthogonal frequency division multiplexing based modulation schemes. The second modulation scheme is different from the first modulation scheme.

公开(公告)号：US09661523B1

公开(公告)日：2017-05-23

申请号：US14660147

申请日：2015-03-17

Applicant: Marvell International Ltd.

Inventor： Sagar A. Tamhane ,  Sarang Shrikrishna Wagholikar ,  Liwen Chu ,  Hongyuan Zhang ,  Hui-Ling Lou

IPC: H04W28/02 ,  H04W56/00 ,  H04L1/00 ,  H04W84/12

CPC classification number: H04W28/0226 ,  H04L1/0002 ,  H04L1/0015 ,  H04W56/006 ,  H04W56/0065 ,  H04W84/12

Abstract: A first wireless communication device including a distance determination module. The distance determination module is configured to calculate a distance between the first wireless communication device and a second wireless communication device. The first wireless communication device is configured to communicate with the second wireless communication device at one of a plurality of available data rates. A rate selection module is configured to select, based on the distance between the first wireless communication device and the second wireless communication device, a first data rate from the plurality of available data rates and/or adjust, based on the distance, the first data rate. The adjusted first data rate corresponds to a second data rate selected from the plurality of available data rates. A transceiver is configured to communicate with the second wireless communication device at the first data rate and/or the second data rate.

公开(公告)号：US20170142733A1

公开(公告)日：2017-05-18

申请号：US14761198

申请日：2015-06-26

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Liping Wang ,  Ying Sun ,  Jinghong Yang

IPC: H04W72/08 ,  H04L5/00 ,  H04W72/04

CPC classification number: H04W72/082 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L5/006 ,  H04W72/0413

Abstract: A method in a base station for selecting a transport format is provided. The base station allocates resources to a User Equipment, UE.When a first criterion is fulfilled for the allocated resources, the base station estimates Signal-to-Interference-plus-Noise Ratio, SINR, by using a first gain offset. The first gain offset relates to a resource allocation according to the first criterion.When a second criterion is fulfilled for the allocated resources, the base station estimates SINR by using a second gain offset. The second gain offset relates to a resource allocation according to the second criterion.The base station then selects a transport format for the allocated resources based on the estimated SINR.

公开(公告)号：US09641358B2

公开(公告)日：2017-05-02

申请号：US14943776

申请日：2015-11-17

Applicant: Cambium Networks Ltd

Inventor： Peter Strong

IPC: H04L25/08 ,  H04L25/03 ,  H04L1/00

CPC classification number: H04L25/03006 ,  H04L1/0003 ,  H04L1/0015 ,  H04L25/03012 ,  H04L25/03159 ,  H04L2025/03541

Abstract: A wireless communication system includes first and second transceivers operable to transmit and receive signals over a communication channel using a plurality of modulation modes. A first signal is received which has been transmitted using a first modulation mode over the communication channel from the first transceiver to the second transceiver, and a first channel equalization characteristic for an equalizer of a first type for receiving the first signal at the second transceiver is determined from measurements of the communication channel. From the first channel equalization characteristic, a second channel equalization characteristic is determined for an equalizer of a second type for a second modulation mode. A measure of a difference between the second and the first channel equalization characteristics is determined, and the second modulation mode is selected for transmission over the communication channel from the first transceiver at least in part in dependence on the measure.

公开(公告)号：US20170105200A1

公开(公告)日：2017-04-13

申请号：US15385080

申请日：2016-12-20

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Daniel Larsson ,  Jung-Fu CHENG ,  Mattias FRENNE ,  Johan FURUSKOG ,  Havish KOORAPATY

IPC: H04W72/04 ,  H04L5/00 ,  H04W74/00 ,  H04L27/26

CPC classification number: H04W72/042 ,  H04L1/0007 ,  H04L1/0015 ,  H04L5/0044 ,  H04L5/0053 ,  H04L27/2627 ,  H04W74/006 ,  H04W88/08

Abstract: A method in a user equipment (121) for determining a transport block size is provided. The transport block size is used by the user equipment (121) in receiving downlink data transmissions from a network node (110) on an enhanced Control CHannel, eCCH. The user equipment (121) and the network node (110) are comprised in a telecommunications system (100). The user equipment (121) has access to a table of predetermined transport block sizes. The user equipment (121) may calculate an indicator NPRB based on the total number of PRBs allocated to the downlink data transmission NPRB, and based on an PRB offset value OPRB or a PRB adjustment factor APRB. Then, the user equipment (121) may determine the transport block size from the table of predetermined transport block sizes based on at least the calculated indicator NPRB. A user equipment, a method in network node and a network node are also provided.

公开(公告)号：US20170086217A1

公开(公告)日：2017-03-23

申请号：US15363920

申请日：2016-11-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Song ZHU ,  Zhiqin YU ,  Zhenyu LI ,  Weiliang ZHANG

IPC: H04W72/12

CPC classification number: H04W72/1268 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L5/0064 ,  H04L27/0012 ,  H04W4/70 ,  H04W8/24 ,  H04W72/1289 ,  H04W84/042

Abstract: Embodiments of the present invention disclose a data transmission method, a base station, and user equipment. The method in the embodiments of the present invention includes: receiving, by a base station, a first target sequence and uplink data that are sent by user equipment; determining, by the base station according to a first mapping relationship, a first target uplink sending parameter corresponding to the first target sequence, where the first mapping relationship is used to indicate a correspondence between an uplink sending parameter and a sequence; and demodulating and decoding, by the base station, the uplink data according to the first target uplink sending parameter.

公开(公告)号：US20170085410A1

公开(公告)日：2017-03-23

申请号：US15270009

申请日：2016-09-20

Applicant: MEDIATEK INC.

Inventor： Ying-You Lin ,  Chih-Wei Kang ,  Chih-Kun Chang ,  Shu-Min Cheng

IPC: H04L27/34 ,  H04L5/00 ,  H04L12/801 ,  H04L29/08 ,  H04W8/18

CPC classification number: H04L27/3405 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/003 ,  H04L5/006 ,  H04L47/29 ,  H04L67/22

Abstract: A method includes determining statics indicators of a first communication device when communicating with a plurality of communication groups comprising the first communication device and at least one second communication device; generating a plurality of multi-user level statics of a plurality of multi-user levels according to the static indicators corresponding to each multi-user level, wherein each multi-user level comprises communication groups with a given number of communication devices; adjusting a plurality of group offsets of the plurality of communication groups according to the plurality of multi-user level statics and current modulation and coding scheme of the first communication device in the plurality of communication groups; and adjusting initial MCSs of the first communication device and the second communication device in each communication group by the group offset of each communication group, to acquire the current MCSs of the first communication device and the second communication device of each communication group.