Shenzhen, China
Shenzhen, China

Huawei Technologies Co. Ltd. is a Chinese multinational networking and telecommunications equipment and services company headquartered in Shenzhen, Guangdong. It is the largest telecommunications equipment maker in the world, having overtaken Ericsson in 2012.Huawei was founded in 1987 by Ren Zhengfei, a former engineer in the People's Liberation Army. At the time of its establishment Huawei was focused on manufacturing phone switches, but has since expanded its business to include building telecommunications networks; providing operational and consulting services and equipment to enterprises inside and outside of China; and manufacturing communications devices for the consumer market. Huawei has over 140,000 employees, around 46% of whom are engaged in research and development . It has 21 R&D institutes in countries including China, the United States, Canada, UK, Pakistan, France, Germany, Colombia, Sweden, Ireland, India, Russia, and Turkey, and in 2013 invested US$5 billion in R&D.In 2010, Huawei recorded profit of 23.8 billion CNY . Its products and services have been deployed in more than 140 countries and it currently serves 45 of the world's 50 largest telecoms operators. Wikipedia.

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Embodiments of the present invention provide an address allocation method, a CGN device, and a CGN dual-active system. The method includes: receiving, by a second CGN device, a first to-be-sent packet sent by a NAT device, and searching a recorded correspondence between a private network address, a public network address, and a port range for a source address of the first to-be-sent packet; sending, to a first CGN device based on a search result indicating that no source address of the first to-be-sent packet is found, an address allocation request that is used to request a public network address and a port range of the source address; searching, by the first CGN device, a recorded correspondence between a private network address, a public network address, and a port range for the source address of the first to-be-sent packet; and allocating, based on a search result indicating that no source address of the first to-be-sent packet is found, a public network address and a port range to the source address of the first to-be-sent packet, recording the network address and the port range, and synchronizing the allocated public network address and the allocated port range to the second CGN device. Source tracing consistency is ensured, and no public network address resources and port resources are wasted. The present invention relates to the field of network communications technologies.


A system and method are provided for consistent read in a record-based multi-version concurrency control (MVCC) in database (DB) management systems. A method in a record-based MVCC DB management system for a snapshot consistent read includes copying a system commit transaction identifier (TxID) and a current log record sequence number (LSN) from a transaction log at a start of a reader without backfilling of a commit LSN of a transaction to records that are changed and without copying an entire transaction table by the reader; and determining whether a record is visible according to a record TxID, the commit TxID and a current LSN, wherein a transaction table is consulted only when the record TxID is equal to or larger than a commit TxID at a transaction start.


A metal-oxide semiconductor (MOS) optical modulator including a doped semiconductor layer having a waveguide structure, a dielectric layer disposed over the waveguide structure of the doped semiconductor layer, a gate region disposed over the dielectric layer, wherein the gate region comprises a transparent electrically conductive material having a refractive index lower than that of silicon, and a metal contact disposed over the gate region. The metal contact, the gate region, and the waveguide structure of the doped semiconductor layer may be vertically aligned with each other.


Patent
Huawei | Date: 2017-04-12

A low dropout voltage regulator (100) includes: a pass element (M0) connected between an input terminal (Vin) and an output terminal (Vout) of the low dropout voltage regulator; an error amplifier (OP0) driving a control terminal of the pass element (M0); a first compensation element (M6) connected to the output terminal (Vout) of the low dropout voltage regulator; and a compensation circuit (101) connected to a control terminal (A) of the first compensation element (M6), wherein the compensation circuit (101) is configured to control a trans-conductance (gm6) of the first compensation element (M6) in accordance with a noise compensation criterion.


Patent
Huawei | Date: 2017-02-22

The invention relates to an audio signal processing apparatus (100) for pre-processing a first input audio signal (EL) to obtain a first output audio signal (XL) and for pre-processing a second input audio signal (ER) to obtain a second output audio signal (XR), the first output audio signal (XL) to be transmitted over a first acoustic near-field propagation channel between a first loudspeaker and a left ear of a listener, the second output audio signal (XR) to be transmitted over a second acoustic near-field propagation channel between a second loudspeaker and a right ear of the listener, the audio signal processing apparatus (100) comprising a provider (101 ) being configured to provide a first acoustic near-field transfer function (GLL) of the first acoustic near-field propagation channel between the first loudspeaker and the left ear of the listener, and to provide a second acoustic near-field transfer function (GRR) of the second acoustic near-field propagation channel between the second loudspeaker and the right ear of the listener, and a filter (103) being configured to filter the first input audio signal (EL) upon the basis of an inverse of the first acoustic near- field transfer function (GLL) to obtain the first output audio signal (XL), the first output audio signal (XL) being independent of the second input audio signal (ER), and to filter the second input audio signal (ER) upon the basis of an inverse of the second acoustic near-field transfer function (GRR) to obtain the second output audio signal (XR), the second output audio signal (XR) being independent of the first input audio signal (EL).


Patent
Huawei | Date: 2017-03-08

The present invention relates to a base station antenna system (100) and a base station (200). The antenna system comprises at least one antenna element (101) and at least one orientation sensor (102) configured to output orientation data (103). The antenna system (100) comprises a control unit (102) that may be configured to calculate an elevation (104) and an azimuth (105) of the antenna element (101) based on the orientation data (103) and to provide the calculated values via an antenna interface to the base station (200), or is configured to provide raw sensor data to the base station (200) via the antenna interface. The base station (200) has a base band unit (202) configured to receive the calculated elevation (104) and azimuth (105) of one or more base station antenna system (100), or configured to receive the raw sensor data and to calculate the elevation value and azimuth value of the antenna element (101) of the at least one base station antenna system (100).


A method for measuring an aggregated carrier cell includes: obtaining, by a user equipment, measurement configuration information of an aggregated carrier cell, where the measurement configuration information includes signal estimation value information and a corresponding measurement period thereof; obtaining, by the user equipment, a measurement period of a non-active component carrier according to a signal estimation value of the non-active component carrier in the aggregated carrier cell and the measurement configuration information; and measuring the non-active component carrier according to the measurement period. With the method of the present invention, the user equipment can measure different component carriers in an aggregated carrier cell in different periods.


The present invention relates to a method and equipment for adaptively tracking a mobile terminal with millimetre wave radio link by establishing and/or maintaining a link between an access point or base station and a moving terminal where the method comprises changing the arrangement of the transmission directional beams of an access point or base station and the reception directional beams of a mobile terminal in a channel estimation process responsive to motion characteristics of the access point or base station transmitter or the mobile terminal receiver or both the access point or base station transmitter and the mobile terminal receiver. The invention further relates to a corresponding system and an access point or base station and a movable terminal provided with means for implementing the above method.


A method for operating a communications device adapted for orthogonal frequency division multiple access (OFDMA) wireless local area network (WLAN) communications includes generating an OFDMA preamble comprising an OFDMA signal (SIG) field including an indication of an allocation of an OFDMA resource to a station, and transmitting the OFDMA preamble in a frame.


An apparatus is configured to perform a method of parallax tolerant video stitching. The method includes determining a plurality of video sequences to be stitched together; performing a spatial-temporal localized warping computation process on the video sequences to determine a plurality of target warping maps; warping a plurality of frames among the video sequences into a plurality of target virtual frames using the target warping maps; performing a spatial-temporal content-based seam finding process on the target virtual frames to determine a plurality of target seam maps; and stitching the video sequences together using the target seam maps.

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