Abstract: Present application provides an uplink data transmission method and apparatus. The method includes: receiving a first message including transmission mode information, where the transmission mode information is used to indicate that a terminal device is capable of transmitting uplink data by using at least two contention transmission units CTUs that are in a same time interval TTI, the CTU refers to a transmission resource combining a time, a frequency, and a code domain, or a transmission resource combining a time, a frequency, and a pilot, or a transmission resource combining a time, a frequency, a code domain, and a pilot, and the uplink data transmitted by using the at least two CTUs is partially same or totally same; and sending a second message including indication information, where the indication information is used to enable the terminal device to determine, according to the indication information, a CTU for uplink data transmission.

Abstract: Embodiments of the present invention provide a method includes: determining configuration information of a first contention transmission unit, where the configuration information of a first contention transmission unit includes power control information, a contention transmission unit is a transmission resource that includes at least a time-domain resource, a frequency-domain resource, and a code-domain resource and the power control information of the first contention transmission unit is used to control power used when a terminal device sends uplink data by using the first contention transmission unit; and sending the configuration information of a first contention transmission unit to the terminal.

Abstract: The present disclosure discloses a method and an apparatus for generating a long training sequence and sending a signal, and belongs to the field of wireless communications. The method includes: obtaining a plurality of long training sequences according to a system parameter and a preset sequence construction formula, wherein the plurality of long training sequences include a plurality of basic training sequences and a plurality of shift training sequences obtained according to cyclic shift of the basic training sequences; and configuring a mapping rule between a terminal device and a long training sequence, for enabling the terminal device to select a long training sequence according to the mapping rule as a long training sequence for sending a signal. By adopting the present disclosure, energy consumption of the receiving end may be reduced and accuracy of channel estimation may be improved.

Abstract: A data transmission method and apparatus are provided, which includes: determining, by a transmitting device, a long training sequence set; determining at least one receiving device set, where the receiving device set includes at least one receiving device in a communications system; determining a first mapping relationship, where the first mapping relationship is a mapping relationship between the at least one receiving device set and at least one set-use long training sequence in the long training sequence set; determining, according to a target receiving device set and the first mapping relationship, a target set-use long training sequence corresponding to the target receiving device set, and performing encapsulation processing on first data to generate a first data packet, where a long training sequence field in a physical layer of the first data packet carries a first long training sequence symbol.

Abstract: A method for operating a user equipment (UE) adapted to transmit beacons includes adjusting an initial beacon interval between successively transmitted beacons in accordance with a value of at least one parameter and a beacon configuration received from a network entity, thereby producing an adjusted beacon interval, and transmitting a beacon selected in accordance with the adjusted beacon interval in a beacon transmission opportunity determined in accordance with the initial beacon interval.

Abstract: A data transmission method and apparatus are provided, which can improve a throughput rate of a system, and improve data transmission performance and user experience. The method comprises determining a target bit sequence. In the system state, a peak-to-average power ratio PAPR corresponding to the target bit sequence is less than a PAPR that corresponds to a bit sequence corresponding to the data length of the target data. The method comprises adding the target bit sequence to length bits that are in a legacy signal field of a target preamble, and performing transmit power enhancement processing on a legacy short training field, a legacy long training field, and the legacy signal field that are in the target preamble according to the transmit power amplification limit.

Abstract: Embodiments of the present invention provide a coding method and apparatus, a base station, and user equipment. The method includes: determining a quantity of polar codes used to code a to-be-transmitted data block and a block length of each polar code of the polar codes used to code the to-be-transmitted data block; and determining, according to a quantity of bits of the to-be-transmitted data block, the block length of each polar code of the polar codes used to code the to-be-transmitted data block, and an input composite channel characteristic corresponding to each input bit position in the polar code of the polar codes used to code the to-be-transmitted data block, allocation information of valid input bits of the polar code of the polar codes used to code the to-be-transmitted data block. The quantity of polar codes used to code the to-be-transmitted data block is not less than two.

Abstract: The invention provides a global optimization and dispatching method based on time scales. The method uses a target value system and a dispatch model. The global optimization and dispatching method takes input from the results from a variety of subtopics. The methods provide adjustment and optimization in accordance with the time scales that are given in the sub goal of each sub topic: long-term, mid-long-term, short-term, ultra short term and real time optimization. Smart distribution grid can improve operational efficiency, integrated application of new elements in the distribution network of distribution energy network, micro grid, energy storage device and non-linear loads. This invention is fully adapted to the smart grid trends, with a good prospective.

Abstract: Embodiments of the present invention disclose a network selection method, an apparatus and a base station. The method includes: determining each of networks satisfying requirements of a user when the user initiates a service or transmits a service; estimating an average energy efficiency of a system during service transmission after the user selects to access each of the networks; selecting a network which can make the average energy efficiency of the system reach a preset threshold value to serve the user. Embodiments of the present invention solve a problem in the prior art that, because no consideration is given to network energy consumption in the network selection, system energy efficiency is reduced. Through comprehensive consideration of network energy efficiency and system energy efficiency, the need for energy saving and consumption reduction is met.

Abstract: Embodiments of the present invention disclose a precoding method and an apparatus for heterogeneous network coordinated multi-point transmission. The method includes: obtaining parameter information of the heterogeneous network coordinated multi-point transmission system; comparing a first channel space transmitting power with the maximum transmitting power of a macro base station, and comparing a second channel space transmitting power with the maximum transmitting power of a micro base station according to the parameter information to obtain a comparison result; determining an obtaining manner of a precoding vector according to the comparison result, and obtaining a first precoding vector according to the obtaining manner of the precoding vector; and configuring the macro base station and the micro base station according to the first precoding vector. The embodiments of the present invention are applicable to a heterogeneous network coordinated multi-point transmission environment.

Abstract: Embodiments of this application provide an uplink transmission control method and an apparatus. A micro base station sends an uplink resource configuration request to a macro base station, the macro base station sends, to the micro base station, an uplink resource configuration indication that is used to allocate an uplink resource to the micro base station, and then the micro base station instructs user equipment to transmit uplink information by using the uplink resource. It can be seen that, after the macro base station allocates the uplink resource to the micro base station, the micro base station may use the uplink resource to receive the uplink information transmitted by the user equipment.

Abstract: Embodiments disclose an automatic gain control method and a communications device in a wireless local area network. The method includes generating a physical layer packet, where the physical layer packet includes a high efficiency long training field, the high efficiency long training field includes N symbols, a length of a cyclic prefix (CP— of a first symbol in the N symbols is greater than or equal to a minimum length required by a receiver device to perform automatic gain control (AGC) estimation, and N is a positive integer. The method also includes sending the physical layer packet to the receiver device.

Abstract: A method includes generating a preamble for a protocol version of a wireless local area network, where the preamble includes a legacy signal L-SIG field and a high efficiency signal HE-SIG field that are arranged in order, the HE-SIG field includes a first orthogonal frequency division multiplexing OFDM symbol and a second OFDM symbol that are arranged in order, and an input information bit of the first OFDM symbol is the same as that of the second OFDM symbol, and sending the preamble to a receive end device, so that the receive end device restores the preamble, and when determining that input information bits obtained after restoring the first OFDM symbol and the second OFDM symbol are the same, determines that the preamble is the preamble of the protocol version.

Abstract: The present disclosure discloses a terminal, a base station, a network controller, a system, and a transmission method. The terminal includes: a receiving module, configured to receive configuration information of at least one air interface—specific path sent by a base station, where the air interface—specific path is used to transmit application data corresponding to at least one application; and a sending module, configured to: if the to-be-sent application data is discontinuously transmitted and has a length less than a preset threshold, use the at least one air interface—specific path to send the application data to the base station. According to embodiments of the present disclosure, when a terminal transmits data or signaling that is discontinuous and has a relatively small length, consumption of network signaling resources is reduced, so that a normal network service properly runs.

Abstract: Embodiments of the present invention disclose a data transmission method and a terminal. The method includes: detecting, by a terminal in an idle state, whether a logical channel of a first path includes first to-be-transmitted data, and whether a logical channel of a second path includes second to-be-transmitted data; and if it is detected that the logical channel of the first path does not include the first to-be-transmitted data and a length of the second to-be-transmitted data is less than a preset second path transmission data threshold, selecting the second path to transmit the second to-be-transmitted data, where the second to-be-transmitted data includes discontinuously transmitted application data whose length is less than a preset threshold.

Abstract: Embodiments provide a terminal, a base station, a system, and a notification method. The terminal includes: a receiving module, configured to receive a system message broadcasted by a base station, where the system message carries resource configuration information of a dedicated channel, and the dedicated channel is used to transmit application data that is transmitted discontinuously and that has a length less than a preset threshold. The terminal also includes a reading module, configured to read the resource configuration information of the dedicated channel from the system message and store the resource configuration information. The terminal also includes a sending module, configured to send, by using the dedicated channel and to the base station, the application data that is transmitted discontinuously and that has the length less than the preset threshold.

Abstract: A multi-channel contention method, a communications device, and a wireless network system are presented. The present disclosure is applied to a communications device in a wireless network, where the communications device is an access point or a station; and the communications device includes: a channel contention module configured to: listen to at least two channels, determine a first channel succeeding in contention, and determine a second channel considered to succeed in contention; and an exchange module configured to: exchange a control frame with another communications device in the wireless network using the first channel and the second channel in order to occupy the channels, or exchange a data frame.

Abstract: Embodiments of the present invention provide a signal transmission method and apparatus, which can implement fast initial time synchronization. The method includes: generating, by a transmit-end device, an initial short training sequence, where the initial short training sequence includes M sub-sequences b, and the sub-sequence b includes N transmission sampling points; determining a quantity of reception sampling points used by a receive-end device when the receive-end device performs autocorrelation processing; generating a symbol sequence according to the quantity of the reception sampling points, and generating a target short training sequence according to the symbol sequence and the initial short training sequence; and sending a target signal to the receive-end device, where a short training sequence field of the target signal carries a short training sequence symbol, and the short training sequence symbol is used to indicate the target short training sequence.

Abstract: The present invention relates to an airflow particle sorter, comprising: a top-sealed sorter main body, a discharge port, an outtake tube and at least one directing-intake port; the inner space of the sorter main body, from the above to the bottom, includes, a straight tube zone and a cone zone, the conical bottom of the cone zone is connected to the straight tube zone; the discharge port is located at the bottom of the cone zone; the directing-intake port is installed in the upper part of the straight tube zone in a tangential direction of the straight tube zone, and is communicated with the inner space of the sorter main body; the outtake tube is hermetically inserted into the top of the sorter main body, and extends downwardly to the lower part of the straight tube zone, and the outtake tube has a sealed bottom end; the lower part of the outtake tube is installed with at least one directing-outtake port, which communicates the outtake tube with the inner space of the sorter main body, the directing-outtake

Abstract: A data transmission method and apparatus are provided, which can improve a throughput rate of a system, and improve data transmission performance and user experience. The method comprises determining a target bit sequence. In the system state, a peak-to-average power ratio PAPR corresponding to the target bit sequence is less than a PAPR that corresponds to a bit sequence corresponding to the data length of the target data. The method comprises adding the target bit sequence to length bits that are in a legacy signal field of a target preamble, and performing transmit power enhancement processing on a legacy short training field, a legacy long training field, and the legacy signal field that are in the target preamble according to the transmit power amplification limit.