Zte Corporation

Xi'an Zhongxing New Software Co., Ltd.

Huawei Digital Power Technologies Co., Ltd.

Huawei Technologies Co., Limited

Jing Jiang

Yunfeng Sun

Kaibo Tian

Weimin Xing

Bo Sun

Junfeng Zhang

Kaiying Lv

Feng Bi

Nan Li

Changqing Zhu

Wenfeng Zhang

Zhiqiang Han

Anming Jiang

Shuanshuan Wu

Jin Yang

Chenchen Zhang

Feng Liang

Ming Yuan

Hui Yu

Shuqiang Xia

Li Zhang

Guanghui Yu

Dan Yang

Wenhao Liu

Feng Li

Nan Zhao

Zhiwei Wu

Dong Zhou

Xiaokang Liu

Yanwen Wang

Zuqi Liu

Aihua Peng

Haomang Hu

Wei Mo

Qinghong Zhang

Xiaopeng Zhao

This application provides an insulation resistor detection circuit, which includes a state control unit, which is connected between a positive electrode and a negative electrode of a power supply of a to-be-detected apparatus; a first voltage division branch that is connected in parallel to a first capacitor to obtain a first voltage waveform, a second voltage division branch that is connected in parallel to a second capacitor to obtain a second voltage waveform; and a processor that is connected to the state control unit, the first voltage division branch, and the second voltage division branch; determines a next switching moment based on the first voltage waveform and the second voltage waveform that are at a current moment; and control, at the next switching moment, the state control unit to switch a state.

Insulation resistor detection circuit, method, and apparatus, and storage medium thereof

Disclosed are a method for indicating channel measurement feedback and a sending station. The method comprises: a sending station sends a radio frame, wherein a signal field, which is in the physical layer header of the radio frame, carries indication information requesting channel measurement feedback. The disclosure effectively reduces the transmission load overhead for sending the radio frame when requesting channel measurement feedback, thereby reducing, the power consumption of a station.

Method for indicating channel measurement feedback and sending station

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).

Radio frame receiving method and device

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.

Method and system for wireless station to access channel

Provided are methods and devices for transmitting a frame in a network. The method includes: setting, by a sending station, a media access control (MAC) frame header of a MAC frame, wherein the MAC frame header includes at least one bit for indicating whether the MAC frame header adopts an optimized MAC header format, the optimized MAC frame header format referring to a MAC frame format in which only necessary frame header information is reserved (S); sending, by the sending station, the MAC frame to a receiving station (S). The present disclosure not only ensures correct sending and receiving of a frame, but also effectively reduces the overhead of the frame header.

Methods and devices for transmitting frame in network

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.

Method and device for sending traffic indication information

A method and system for sending a channel measurement reference signal are provided, said method comprising: sending each port of the channel measurement reference signal in one subframe or two adjacent subframes during one sending period, and repeatedly sending each port of the channel measurement reference signal in full bandwidth with equal space in the unit of a predetermined composition unit.

Method and system for sending a channel measurement reference signal

The present invention discloses a method and system for coordinated scheduling based on cell priority, which is applied to the system using coordinated multiple point (CoMP) transmission technology. The method includes: performing priority sequencing on each coordinated cell according to the historical and/or current information of each coordinated cell and finishing scheduling of each coordinated cell in an order according to priority from high to low. By adopting the coordinated scheduling scheme in the present invention, the network can be made in a reasonable working status, and then, the performance of the entire system can be improved.

Method and system for coordinated scheduling based on cell priority

The disclosure provides a method and system for transmitting channel feedback information. The method includes: a transmitting station transmits, after obtaining a Transmission Opportunity (TXOP), a radio frame to a receiving station to request the receiving station to transmit channel feedback information; and the receiving station transmitting, after receiving the radio frame transmitted by the transmitting station, a radio frame including channel feedback information to the transmitting station, wherein a transmission end time of the radio frame including channel feedback information is allowed to exceed an end time set by a transmission time threshold of the TXOP. The technical solution of the disclosure solves the technical problem that the transmitter is unable to timely obtain channel feedback information from the receiver, enabling the transmitter to timely obtain the channel feedback information from the receiver even in the condition that the transmitter cannot estimate a data volume and a rate of the channel feedback information fed back from the receiving station and whether the time for feeding back the channel feedback information by the receiver would exceed the transmission time threshold value or not.

Method and system for transmitting channel feedback information

A method and device for mapping a spatial stream to a space-time stream, and a method and device for transmitting data are provided in the disclosure. The mapping method includes: determining, according to a space-time encoding indication bit in a network, whether to adopt space-time encoding (S); if it is determined to adopt space-time encoding, mapping M OFDM symbols carried by the nth spatial stream to OFDM symbols carried by the (2n&#x2212;1)th and 2nth space-time stream respectively, n=1, 2, . . . , N, N is the total number of spatial streams in the network, M is the number of OFDM symbols carried by each spatial stream, and M is an even greater than zero (S). Applying the disclosure, the problem that there is no specific method for mapping spatial stream to space-time stream using space-time encoding in a typical 802.11ac ultrahigh throughput WLAN system can be solved.

Method and device for mapping spatial stream to space time stream, and method and device for transmitting data

The present disclosure provides a mapping and resource allocation method for R-PDSCH, including: when resources allocated for an R-PDCCH overlap with resources allocated for the R-PDSCH, data of the R-PDSCH is not mapped or sent on over-lapped resources, or the data of the R-PDSCH to be sent on the over-lapped resources is punctured; the data of the R-PDSCH is mapped and sent on all or partial resources which are not occupied by the R-PDCCH; a receiving end receives data according to the mapping method for the R-PDSCH; wherein a resource allocation mode corresponding to a shared channel in an LTE system is reused or a grouping-tree resource allocation mode is used to allocate resources for the R-PDSCH.

Mapping and resource allocation method for relay link-physical downlink shared channel

It is disclosed a method for transmitting wireless frame, including: the wireless frame is transmitted by using any access category. The wireless frame is a beginning frame for performing channel information measurement. It is further disclosed an apparatus for transmitting wireless frame, including: a selection unit and a transmitting unit, where the selection unit is configured to select any access category for a beginning frame for performing the channel information measurement; and the transmitting unit is configured to transmit the beginning frame. It is further disclosed a communication network element provided with the apparatus for transmitting wireless frame mentioned above. It is ensured that the wireless frames subsequent to the frame exchange sequence for performing the channel information measurement may be smoothly transmitted, and the channel information measurement may be smoothly performed, and thereby transmitting communication data based on the acquired channel information. The support of each communication network elements to the MIMO and beam forming is further ensured, and an effective supplement to the existing protocols is provided.

Method and apparatus for transmitting wireless frame, and communication network element

A method of allocating resource elements in an orthogonal frequency division multiplexed (OFDM) system for transmission of a channel state information reference signal (CSI-RS) is disclosed. The method includes converting one or more resource elements to a two-dimensional frequency-time domain; and partitioning the one or more converted resource elements to units of a physical resource block (PRB). One or more resource elements are patterned over at least a portion of the PRB for transmission of the CSI-RS. According to an embodiment, the CSI-RS resource elements with a same subcarrier index for a common cell are code division multiplexed (CDM), with a CDM dimension equal to a number of CSI-RS resource elements with the same subcarrier index for the common cell.

Methods and systems for CSI-RS resource allocation in LTE-advance systems

Disclosed in the present invention is a pre-coding method for hybrid multiplexing demodulation reference symbol (DMRS). The method includes: determining a multiplexing relationship between DMRS ports; making layers of data transport correspond to DMRS ports with the multiplexing relationship determined; and pre-coding pilot sequences corresponding to various DMRS ports according to the relationship between the layers of data transport and the DMRS ports. Also disclosed in the present invention is a method for mapping from a layer to a multiplexing demodulation reference symbol (DMRS) and an apparatus for achieving pre-coding based on a hybrid multiplexing demodulation reference symbol (DMRS). By way of the technical solution of the present invention, interference between the layers corresponding to different codeword streams can be avoided, and the accuracy of channel estimation can be improved.

Pre-coding method and apparatus based on mixed multiplexing demodulation reference signals

The present invention discloses a multicast broadcast single frequency network subframe. The multicast broadcast single frequency network subframe is used as a physical resource of a user transmission data channel; in the multicast broadcast single frequency network subframe, except symbols of a physical downlink control channel, other symbols adopt the same cyclic prefix as subframe 0 in a local cell. The present invention also discloses a user data channel transmission method and device, and a user physical resource determining device. By using the subframe, the transmission method and device, and the determining device, the performance of the LTE-A system can be improved.

Growing community of inventors

Shenzhen, China

Jing Jiang