Huawei Technologies Co., Limited

Beijing Institute of Technology

Zhihao Xing

Hui Yang

Juan Liu

Yanping Jiang

Mu Zhao

Xinhui Duan

Houcheng Tang

This application relates to the field of communications technologies, and provides a channel state information measurement method and apparatus, so that a receiver can measure CSI without joining a network of a WiFi transmitter. The method includes: sending, by a CSI request apparatus, a first CREQ frame, a group of session parameters used to transmit a CS frame; receiving, by the CSI request apparatus, a CRSP frame sent by a first CSI response apparatus; receiving, by the CSI request apparatus, the CS frame by using the first session parameter; and measuring, by the CSI request apparatus, the CS frame to obtain CSI. The method is applied to a scenario of positioning or a scenario in which CSI measurement needs to be customized.

Channel state information measurement method and apparatus

Relating to the field of communications technologies, an embodiment of the present invention discloses an 802.11 network-based CSI obtaining method and apparatus, so as to provide a CSI obtaining mechanism that addresses a positioning requirement, to improve accuracy of a terminal positioning process by providing more comprehensive CSI for a terminal. An embodiment of the present invention is applicable to a CSI collecting process.

802.11 network-based CSI obtaining method and apparatus

A method for selecting a wireless access point (AP) relates to the field of communications technologies, and to a fine time measurement (FTM) technology in a wireless network, where after receiving a query request carrying a query condition, a server determines a target AP according to stored service capability information of each of multiple APs that support an FTM mechanism and the query condition, and sends a media access control (MAC) address of the target AP and information about a frequency band and a channel used by the target AP to a terminal.

Method for selecting wireless access point, FTM session method, terminal, and server

Embodiments of the present invention relate to the communications field, and disclose an AC, a STA, an AP, and a control method to solve a problem that a STA located in a coverage hole area of a Wi-Fi network cannot access the Wi-Fi network. A specific solution is: a receiving unit receives an access request message sent by a STA; a determining unit determines, sleeping APs managed by the AC and having access ranges covering the STA as first candidate APs; an allocation unit allocates the first candidate AP to the STA as a target AP; and a sending unit sends a wake-up control message to the target AP, and sends an access permission message to the STA. The present invention is used in a control process.

Access controller, station, access point, and control method

A positioning system, method, and apparatus relate to the communications field in order to improve positioning precision. The system includes a preset anchor set, a positioning server, and at least one positioning terminal. A distance between the at least one positioning terminal and a to-be-positioned terminal falls within a preset range. The at least one positioning terminal is configured to receive an instruction message, and execute a positioning packet interaction procedure with at least one anchor in the preset anchor set according to the instruction message. The interaction procedure enables the positioning terminal or the anchor executing the interaction procedure to obtain positioning support information. The positioning server is configured to receive the positioning support information, and position the to-be-positioned terminal according to the positioning support information.

Positioning method and device for improving positioning precision

Embodiments provide a waking-up system made up of an access point (AP) device, a terminal device and a wakeup server. The wakeup server comprises a receiving unit, configured to receive an AP activation request sent by the terminal device, where the AP activation request includes an identity of the terminal device. Also included a determining unit, configured to determine a target AP device according to the AP activation request. Also included is an acquiring unit, configured to acquire a status of the target AP device, and a sending unit, configured to send a wakeup request to the target AP device, wherein the sending unit is further configured to send a first AP activation success response to the terminal device.

Method for waking up access point device, device, and system

Embodiments of the present invention provide a method and apparatus for receiving fragments as well as a method and apparatus for transmitting fragments. The method for receiving fragments includes: receiving a group of fragments from a transmitter through a first channel, where the transmitter suspend transmitting a next group of fragments after the group of fragments is transmitted; and transmitting one or a plurality of first acknowledgement messages to the transmitter through the first channel immediately after the group of fragments are received. According to embodiments of the present invention, the acknowledgement messages may be immediately transmitted to the transmitter through a current channel after one group of fragments are received through the current channel, thereby avoiding the delay of a fragment receiving and transmitting process, which is caused by the competition and occupation of the channel by other nodes, and thus improving transmission efficiency.

Method and apparatus for receiving fragment as well as method and apparatus for transmitting fragment

Embodiments of the present invention provide a method, device, and system for selecting route discovery, to enable flexible selection of a route discovery method. The method includes: determining the amount of data to be transmitted; selecting, according to the amount of data to be transmitted, symmetric path route discovery or asymmetric path route discovery; and transmitting a selection result to other nodes.

Method, device, and system for selecting route discovery

In the field of mobile communications, a method, an apparatus, and a system for pushing information, and a method and an apparatus for obtaining information are provided. The method for pushing information includes: generating a Zigbee message, adding push information to the Zigbee message, and sending the Zigbee message carrying the push information to a Zigbee mobile terminal in a Zigbee information push network; or includes: forwarding a Zigbee information request message sent by a Zigbee mobile terminal in a Zigbee information push network to an Application Server (AS), receiving a Zigbee information response message that carries push information and is returned by the AS, and forwarding the Zigbee information response message to the Zigbee mobile terminal. The method for obtaining information includes: receiving a Zigbee message from a Zigbee information node and extracting push information.

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Beijing, China

Zhihao Xing