Patent application number | Description | Published |
20120113212 | Terminal, Multipoint Control Unit, System and Method for Implementing High Definition Multiple Pictures - A terminal, multipoint control unit, system and method for implementing high definition multiple pictures are provided by the present invention. The method comprises the following steps of: a Multipoint Control Unit (MCU) calculating a high definition video code stream format according to video conference control information, and sending a capability set containing the high definition video code stream format to a selected terminal; based on the high definition video code stream format in the capability set, the selected terminal encoding a high definition video image and sending the encoded high definition video code stream to the MCU; according to the video conference control information, the MCU synthesizing the received high definition video code stream image into multiple pictures, and obtaining the high definition multi-picture video code stream image and sending it to the terminals attending the conference. | 05-10-2012 |
20130103393 | Multi-point sound mixing and distant view presentation method, apparatus and system - The disclosure provides a multi-point sound mixing and distant view presentation method, apparatus and system, wherein the multi-point sound mixing and distant view presentation method includes: receiving audio code streams from a plurality of meeting places, wherein each meeting place comprises one or more meeting sections, and each meeting section corresponds to one audio code stream; mixing the audio code streams of the meeting sections which have a corresponding relationship among the plurality of meeting places; and outputting mixed audio code streams to the meeting sections which have the corresponding relationship among the plurality of meeting places. Sounds in different sections of the distant view presentation conference system can be distinguished by technical solutions provided by the disclosure. | 04-25-2013 |
20130148615 | Method and System for Channel Reservation - The disclosure provides a method and a system for channel reservation. The method comprises: a sending station sending a channel reservation request message to a receiving station on a first number of fundamental channels, wherein the first number is an integer greater than or equal to 1, and each one of the fundamental channels is a minimum-bandwidth channel defined in a system in which the sending station and the receiving station locate; the receiving station sending a channel reservation acknowledgement message to the sending station on a second number of fundamental channels, wherein the second number is an integer greater than or equal to 1; and the sending station receiving the channel reservation acknowledgement message, and completing channel reservation with the receiving station. With the disclosure, interference caused by other sending stations can be avoided. | 06-13-2013 |
20130176954 | Method and System for Channel Data Transmission in Wireless Network - The present invention discloses a method and system for channel data transmission in a wireless network. The method includes: after a transmitting station and a receiving station determine a channel bandwidth to use for data transmission by interaction and negotiation, the transmitting station transmitting data to the receiving station with the determined channel bandwidth. The present invention further discloses a transmitting station. The present invention can solve the existing collision problem caused by contention for channels between the hidden stations and the current transmission stations, and thus can take full advantage of the effective transmission bandwidth in the large bandwidth system of a wireless network and increase the frequency spectrum utilization of large bandwidth, and at the same time ensure the backward compatibility with the large bandwidth system and its co-existence with conventional systems. | 07-11-2013 |
20130195018 | METHOD AND SYSTEM FOR CHANNEL SCANNING IN WIRELESS NETWORK - The disclosure discloses a method and a system for channel scanning in a wireless network. The method includes that an Access Point (AP) and/or Non-AP Stations (STAs) associated with the AP performs channel scanning according to one or more of the following ways: Way A: the AP performs Overlapping Basic Service Set (OBSS) channel scanning on channels within one or more different channelizing sets with a same period or with different periods; Way B: part or all of STAs associated with the AP perform OBSS channel scanning on channels within one or more different channelizing sets with a same period or with different periods; and Way C: the AP or part or all of STAs associated with the AP performs single OBSS channel scanning on one or more channelizing sets under event triggering. With the present disclosure, the channel scanning procedure of an equipment supporting multiple channelizing set schemes under circumstance of OBSS is planned. | 08-01-2013 |
20130215863 | Method and apparatus for establishing network in wireless network - The disclosure provides a method and an apparatus for establishing a network in a wireless network. The method includes: a wireless station selects a working channel and a primary channel which satisfy a bandwidth requirement and an interference level in a channelized set within a given frequency band according to local configuration information and/or through channel scanning and interference detection; and the wireless station establishes a network according to the selected working channel and primary channel. Through the disclosure, a wireless network compatible with the current Wireless Local Area Network (WLAN) can be established according to the configuration information or scanning result when the wireless station supports multiple channelized set schemes within a given frequency band, and the utilization of available spectrum resources is maximized. | 08-22-2013 |
20130242957 | Method for achieving backward compatibility in large bandwidth wireless network, and access point - The present disclosure discloses a method for achieving backward compatibility in a large bandwidth wireless network and an Access Point (AP) for solving the technical problem of compatibility between a more effective channelization solution and a plurality of existing channelization solutions. The technical solution of the disclosure is implemented on the basis of time division multiplexing and frequency division multiplexing, and under the time division multiplexing mode, the AP sends/receives wireless frames on channels belonging to a first and a second channelization set respectively and alternately in terms of time according to a communication protocol; and under the frequency division multiplexing mode, the AP independently configures time window parameters and the corresponding main and/or secondary channel parameters on the channels which belong to the first and second channelization sets and are non-overlapped in the frequency domain, and sends/receives the wireless frames. By way of the above solution of the disclosure, the wireless station can establish a large bandwidth wireless network supporting backward compatibility. | 09-19-2013 |
20130272288 | TRANSMISSION METHOD AND DEVICE IN WIRELESS LOCAL AREA NETWORK - The disclosure claims a transmission method and device in WLAN, wherein the method includes: a transmitting STA or a receiving STA performing channel detection and/or channel scanning on a channel of the first channel set and/or the second channel set; if the result of the detection and/or scanning satisfies a preset condition, the transmitting STA and the receiving STA exchanging a reservation message on the channel of the first channel set or the second channel set, wherein the reservation message is configured to reserve a channel of the second channel set for transmission; the transmitting STA transmits a data frame to the receiving STA on the reserved channel of the second channel set; and after receiving the data frame, the receiving STA transmits acknowledgement information of the data frame on the channel of the first channel set or the second channel set. | 10-17-2013 |
20130286891 | Method and System for Switching Working Mode for Backward Compatible Broadband Wireless Network - The disclosure discloses a method and a system for switching a working mode for a backward compatible broadband wireless network, in order to solve the technical problem of switching between each working mode when various compatible modes based on different channelized sets exist in the broadband wireless network. In the disclosure, an access point (AP) indicates its current working mode by a system configuration message; the AP instructs a non-AP associated with the AP to switch a working mode by a mode switching message or a frame exchange sequence; and the non-AP switches the working mode according to instruction information included in the mode switching message or the frame exchange sequence after receiving the mode switching message or the frame exchange sequence. Through the scheme of the disclosure, a wireless point can be switched between each working mode when various compatible modes based on different channelized sets exist in the broadband wireless network, thereby setting up a broadband wireless network supporting backward compatibility. | 10-31-2013 |
20140071821 | FAST ACCESS AND CONTROL IN WIRELESS COMMUNICATIONS - A wireless local area network comprises an access point and at least one wireless device. The access point indicates in a downlink transmission whether access to the network is based on active scan or polling. The indication is changeable responsive to whether a beacon transmission time is approaching, whether a new scan is to be forced or whether network traffic is about to reach an overload condition. | 03-13-2014 |
20140079010 | Method and system for feeding back channel measurement information - The disclosure provides a method and system for feeding back channel measurement information. The method includes: a receiving station receives a control frame for a channel measurement from a sending station, and sends channel measurement information to the sending station; the sending station correctly receives the channel measurement information or a part of the channel measurement information to obtain a valid response frame responding to the control frame for the channel measurement. Through the above solutions, if the sending station only correctly receives a part of the channel measurement information, the sending station does not consider this transmission is failed but consider that the valid response frame responding to the control frame for the channel measurement is obtained, so as to avoid unnecessary withdraw and retransmission, thereby saving bandwidth resources. | 03-20-2014 |
20140133451 | Identifier Allocation Method and System - The disclosure discloses an Identifier (ID) allocation method, including that: a non-AP Station (STA) sends a first radio frame to an Access Point (AP); and the AP sends a second radio frame to the STA, wherein the second radio frame carries group ID information or group ID information and second station ID information allocated to the STA. In a case that the STA sends a Reassociation Request frame to the AP, the AP may also send the STA a Reassociation Response frame carrying group ID information and/or station ID information reallocated to the STA. Correspondingly, the disclosure further discloses an ID allocation system. With the disclosure, a terminal is distinguished by the group ID information and the station ID information, such that it is possible to avoid Association ID (AID) shortage and support group management of terminals. | 05-15-2014 |
20140139618 | Media transmission method and system based on telepresence - A media transmission method based on telepresence is disclosed, comprising: during connection establishment, a master telepresence terminal of a local media transmission system and a remote endpoint perform signaling exchange, to establish a media logical channel between the local media transmission system and the remote endpoint; and transmits the same type of media streams between the local media transmission system and the remote endpoint through a media logical channel or respectively through multiple media logical channels, and receives the same type of media streams through a media logical channel or respectively through multiple media logical channels. A media transmission system based on telepresence is further disclosed correspondingly. Through the disclosure, when a telepresence system of a certain conference site is called, only one number needs to be called, which is easy to operate; moreover, agent information exchange can be performed in the telepresence system, thereby achieving the effect of sound-based localization, solving the problem such as synchronization between streams, and improving user experience. | 05-22-2014 |
20140140264 | Data transmission method and system - A data transmission method and system are disclosed. The method comprises: a sending station sends a radio frame and notifies group transmission time interval information; a group station receives the radio frame and acquires group transmission time interval information of a group to which the group station belongs; and the group station competes for a sending opportunity within the group transmission time interval of the group to which the group station belongs. In accordance with the scheme provided in embodiments of the disclosure, a sending station allocates specific group transmission time intervals (subsections) to stations of different groups, and in the case of a large number of users stations, user stations in different groups compete for channels within different time intervals, thereby avoiding the simultaneous or approximately simultaneous competition among a large number of users, reducing the probability of collisions and improving the utilization efficiency of wireless resources. | 05-22-2014 |
20140146809 | Identifier assignment method and device in wireless local area network - The disclosure discloses an identifier assignment method in a Wireless Local Area Network (WLAN), which includes: a group identifier is set for a non-Access Point Station (STA). The method further includes: in a process during which the STA associates or reassociates to an Access Point (AP), a terminal identifier is assigned to the associated or reassociated STA or a terminal identifier and a group identifier are assigned to the associated or reassociated STA. The disclosure also discloses an identifier assignment device in a WLAN for implementing the terminal access method. The terminal identifier is significantly expanded through the setting of the group identifier, so that a unique identifier can be assigned to the STA accessing to the AP without identifier repetition of the STA. Meanwhile, the grouping of the STA also facilitates the scheduling and management of the STA in a group. The disclosure ensures that sufficient STAs can access to the AP and a different identifier can be assigned to each STA. | 05-29-2014 |
20140185580 | INTEGRATED WIRELESS LOCAL AREA NETWORK FOR SPECTRUM SHARING - A wireless communication system includes a database that holds spectral usage and availability information, an access point that operates to provide wireless services from a plurality of service operators and a gateway that receives a wireless spectrum allocation request from a service operator, determines spectrum availability by consulting the database, responds to the service operator with a grant or a denial based on the determined spectrum availability, and controls the access point to provide wireless service according to the response to the service operator. | 07-03-2014 |
20140241217 | HEADSET DEVICE, HEADSET, AND METHOD FOR PROCESSING SIGNAL BY USING HEADSET DEVICE - Disclosed are a headset device, a headset, and a method for processing a signal by the headset device. The headset device comprises: a first interface, a second interface, a switch and an isolation unit. The isolation unit comprises a first isolation body and a second isolation body connected to the first isolation body in parallel. The first interface is connected to the second interface through the isolation unit, wherein the first interface is configured to connect to a ground network of the headset, and the second interface is configured to connect to a ground line of a mobile terminal where the headset device is located. Through the disclosure, FM interference is reduced while TDD noise interference is reduced, thus user experience is improved. | 08-28-2014 |
20140254471 | INTEGRATED RELAY IN WIRELESS COMMUNICATION NETWORKS - A wireless communication system comprising a plurality of wireless stations communicating using a first air interface protocol a relay device, and an access point, wherein the plurality of wireless stations communicate with entities in a wide area network via the access point without establishing a direct wireless link with the access point, and wherein the relay device communicates with the plurality of wireless stations using the first air interface protocol and communicates with the access point using a second, different, wireless communication protocol. The second communication protocol, e.g., could be a backhaul protocol that is used by the access point to communicate with other access points in the system. | 09-11-2014 |
20140376433 | Wireless channel access method and system - Disclosed are a method and system for accessing a wireless channel. An access point transmits a radio frame including access parameters of at least one group of stations (STAs); and when receiving the radio frame, an STA belonging to the at least one group of STAs transmits data to be transmitted competitively within an uplink transmission period in the access parameters according to the access parameters of the group of STAs. With the disclosure, system overhead can be reduced while low power consumption of a station is ensured. | 12-25-2014 |
20150016309 | FULL DUPLEX OPERATION IN A WIRELESS NETWORK - Multiple wireless devices in a network perform full duplex communication in which the transmission path and receiving path are spatially separated to allow simultaneous transmission and receiving. The wireless devices can either be controlled using a centralized, or point, coordination function or a distributed coordination function. A full-duplex wireless device senses the medium during transmission by itself and selectively continues the transmission when a signal is sensed on the medium. A full-duplex wireless device measures signal being transmitted by its transmitter and estimates parameters that can be used to cancel the contribution of the locally transmitted signal to the locally received signal concurrently being received during the transmission. The transmit antenna and the receive antenna of a full-duplex wireless device can be configured to be spatially isolated from each other to minimize interference between the antenna functions. | 01-15-2015 |
20150043431 | METHOD AND DEVICE FOR SENDING TRAFFIC INDICATION INFORMATION - Provided are a method and a device for sending traffic indication information. In the method, an AP sends a radio frame to multiple STAs associated with the AP, wherein the radio frame carries an indication field, and the indication field is used to indicate whether the radio frame carries traffic indication virtual bitmap information. According to the technical solution provided, in the case where the AP has no unicast cache data for any station, multiple STAs associated with the AP can know whether the AP has their respective unicast cache data to be sent. | 02-12-2015 |
20150055577 | Downlink Data Collision Avoidance Method, Access Point and Station - The present document provides a method for avoiding downlink data collision, an Access Point (AP) and a Station (STA). The method for avoiding downlink data collision includes: an AP receiving a radio frame for inquiring whether the AP has a Bufferable Unit (BU) of an STA transmitted by the STA; and after determining that there is a BU of the STA and the BU is larger than a predetermined threshold, the AP exchanging radio frames with the STA to reserve a channel, and transmitting the BU to the STA after succeeding in reserving the channel. The method can guarantee the fairness among various STAs and the reasonable utilization of channel resources, thus avoiding the collision; furthermore, the channel reservation frame transmitted by the AP can reserve a longer period of time, i.e. a plurality of BUs can be transmitted to the STA at a time, thus saving the link overhead. | 02-26-2015 |
20150103710 | RADIO FRAME SENDING METHOD AND APPARATUS - Provided are a radio frame sending method and apparatus. In the method, when entering an awake state from a doze state, a station selects a pre-defined access category or an access category which is pre-negotiated with a centre station to contend for a wireless channel. Afterwards, the station sends a radio frame to the centre station via the wireless channel obtained through the contention, and then notifies the centre station to send buffered data to the station. The method and apparatus can be applied to flexibly and dynamically regulate an access category used for contending for a wireless channel when a station sends a radio frame which is used for notifying a centre station to send buffered data to the station. | 04-16-2015 |
20150117343 | Radio Frame Receiving Method and Device - Disclosed are a method and device for receiving the radio frame. The method comprises: a first functional entity of a station detects that a channel signal intensity reaches a preset threshold, and the first functional entity starts receiving a radio frame and sends an indication that a channel detection result is busy to a second functional entity of the station; the first functional entity determines that the station is not a target station for receiving the radio frame, and sends an indication of ending up receiving the radio frame to the second functional entity; and when transmission of the radio frame ends, the first functional entity sends an indication that the channel detection result is idle to the second functional entity. The disclosure provides a reception operation processing procedure of a station having the function of discarding the radio frame while not updating a network allocation vector (NAV). | 04-30-2015 |
20150185485 | INFRARED LASER ZOOM BEAM EXPANDING SYSTEM AND LASER PROCESSING EQUIPMENT - An infrared laser zoom beam expanding system, applied to the field of laser processing, and comprising a first lens, a second lens and a third lens. The first lens and the third lens are plane-convex plus lenses, and the second lens is a meniscus minus lens. The first lens, the second lens and the third lens respectively comprise a first surface and a second surface, a third surface and a fourth surface as well as a fifth surface and a sixth surface. The radiuses of curvature of the first to sixth surfaces are ∞, −27, 10, 1.7, ∞, −103. The center thickness of the first to third lenses is 2, 1, 4. The outer diameters of the first to third lenses are 10, 3, 34. Proportions of the refractive indexes to the Abbe numbers of the first to third lenses are 1.8:25, 1.48:68, and 1.8:25. A distance between the second surface and the third surface is 10-27. An distance between the fourth surface and the fifth surface is 119-125, The unit is millimeter, and a tolerance is 5%. The system may perform beam expanding on entering light by 2-16 times, which may be adaptable to laser devices with different emergent diameters and divergence angles, and improve efficiency and accuracy of laser processing. | 07-02-2015 |
20150192778 | ULTRAVIOLET LASER ZOOM BEAM EXPANDING SYSTEM AND LASER PROCESSING EQUIPMENT - An ultraviolet laser zoom beam expanding system, applied to the field of laser processing, includes a first lens, a second lens, and a third lens (L | 07-09-2015 |
20150201434 | CONTENTION ARBITRATION USING CODE DIVISION MULTIPLEXING - Access to a wireless medium is controlled based on contention arbitration. A certain number of wireless devices are allowed to contend for a transmission opportunity. Requests from these wireless devices are processed based on codes contained in the requests. Winning wireless devices are given access to the wireless medium by transmitting a contention arbitration message. In some implementation, codes in the request are selected from an orthogonal or pseudo orthogonal code set. | 07-16-2015 |
20150205136 | GREEN LASER ZOOM BEAM EXPANDING SYSTEM AND LASER PROCESSING EQUIPMENT - A green laser zoom beam expanding system, applied to the field of laser processing, and comprising a first lens, a second lens and a third lens (L | 07-23-2015 |
20150222390 | Processing Method and Device for Packet Loss Compensation in Video-Conferencing System - A processing method and device for packet loss compensation in video-conferencing system are provided. The method includes: when a video conference is held, judging whether terminals participating in the video conference include one or more FEC terminals, if yes, matching code stream processing capabilities of transmitting terminal and receiving terminal between FEC terminals which transmit a code stream or between an FEC terminal and an ordinary terminal which transmit code stream, and converting a data code stream transmission rate of the transmitting terminal into a bearable data code stream rate of the receiving terminal. The device includes a judgment component and a matching component. The solution enables a terminal with packet loss to activate an FEC function to compensate lost data, and also enables an ordinary terminal without packet loss to keep an original data code stream rate for communication, thereby maximally ensuring the image quality of the video-conferencing system. | 08-06-2015 |
20150282043 | TECHNIQUES FOR FAST DELIVERY OF RADIO INFORMATION - A transmitting wireless device provides channel access information to a receiving wireless device for the receiving wireless device to make a determination of when to transmit and what transmissions parameters to use for the transmission. The channel access information may be used differently by wireless devices operating in a basic service set and an overlapping basic service set. Channel access information may include fields indicative of transmission power used, signal to noise ratio headroom available, and so on. Channel access information may be generated and transmitted at the PHY layer of an implementation, thus providing a fast delivery to the receiving wireless device. | 10-01-2015 |
20150293333 | F-THETA LENS AND LASER PROCESSING DEVICE FOR FAR-INFRARED LASER PROCESSING - An Fθ lens and a laser processing device for far-infrared laser processing are provided. The Fθ lens for far-infrared laser processing comprises a first lens (L | 10-15-2015 |
20150298465 | NEAR-INFRARED LASER FOCUSING LENS AND LASER PRINTING DEVICE - A near-infrared laser focusing lens and a laser printing device are provided. The lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens (L | 10-22-2015 |
20150312940 | Method and system for wireless station to access channel - Provided are a method and system for a wireless STA to access a channel. The method includes that the wireless STA acquires a transmission ending moment of a wireless frame when selecting to refuse or drop the wireless frame and not updating a locally stored Network Allocation Vector (NAV); and the wireless STA accesses the channel when the transmission of the wireless frame is ended and a preset condition is met. According to the disclosure, a collision problem may happen to the wireless STA, and the wireless STA can access the channel only when the preset condition is determined to be met after the transmission of the wireless frame is ended, so that the problem of transmission collision with a hidden STA during the wireless frame transmission of the wireless STA is solved. | 10-29-2015 |