Abstract: A cable includes: a pair of core wires; an insulating layer covering the pair of core wires; a shielding layer covering the insulating layer; and an outer insulating layer covering the shielding layer; wherein the shielding layer is a double-layer metal foil.

Abstract: A cable includes: a core wire including an inner conductor and an insulating layer around the inner conductor by extrusion molding; a shielding layer covering the core wire; and an outer insulating layer covering the shielding layer; wherein the shielding layer is silver-plated copper foil, and there is no insulating layer between the core wire and the silver-plated copper foil.

Abstract: This application provides an information transmission method. The method is applied to a communications system including a request transmission resource and a feedback transmission resource that both have M overlapping time units in time domain. The method includes: when duration between an initial time unit in the M time units and a time unit that is determined by the terminal device and that is used to transmit an SR is less than preset duration, sending, by the terminal device, both the SR and the feedback information in each of the M time units; or when a time unit that is determined by the terminal device and that is used to transmit an SR is a time unit in the M time units other than an initial time unit in the M time units, sending, by the terminal device, only feedback information in each of the M time units.

Abstract: A cable includes: a pair of core wires; an integrally extruded insulating layer covering the pair of core wires; a shielding layer covering the extruded insulating layer; and an outer insulating layer covering the shielding layer; wherein the pair of core wires are arranged longitudinally side by side and touch each other.

Abstract: The present disclosure discloses a data transmission method, a device, and a system, relates to the communications field, and can resolve a prior-art problem that a receive end cannot correctly receive data because a starting moment of sending information on a license-exempt spectrum cannot be determined. A specific solution is as follows: A first device detects first information of a first serving cell in a preset time period of a first subframe on a first time resource or a first time set of a subframe on a first time resource, determines a starting position of a second time resource according to the first information, and detects second information of the first serving cell in a second time set of a subframe on the second time resource. The present disclosure is used for data transmission.

Abstract: Embodiments of the present disclosure provide a data channel sending method. In the method, a base station starts a clear channel assessment (CCA) on a data channel for a to-be-sent data channel. If the CCA on the data channel succeeds, the base station sends the data channel in a first subframe within a time window, where the data channel performs rate matching based on a reference signal (RS). The RS includes a first RS or a second RS. The first RS occupies continuous OFDM symbols in a subframe, and the second RS occupies discontinuous OFDM symbols in a subframe. The time window is a preset time window used to send the first RS, and the first RS is used by a user equipment (UE) to perform cell identification and/or a radio resource management (RRM) measurement on a cell served by the base station.

Abstract: Embodiments of the present invention provide an uplink information transmission method, a related device, and a communications system. The method includes: receiving, by a terminal device, uplink scheduling information sent by an access network device; determining, by the terminal device based on aperiodic channel state indication information and modulation and coding indication information that are included in the uplink scheduling information, whether to transmit feedback information on an uplink resource indicated by the uplink scheduling information; and if determining to transmit the feedback information on the uplink resource, transmitting, by the terminal device, the feedback information on the uplink resource.

Abstract: Embodiments of the present invention disclose a data transmission method, a terminal device, and a network device. The method includes: receiving, by a terminal device, first indication information from a network device, where the first indication information is used to indicate to enable an uplink resource randomization rule corresponding to the terminal device, the uplink resource randomization rule is a specific rule of the terminal device, and the uplink resource randomization rule includes a randomization rule of a demodulation reference signal DMRS sequence used by the terminal device; determining, by the terminal device based on the first indication information, a first uplink resource used to transmit uplink data; and transmitting, by the terminal device, the uplink data by using the first uplink resource.

Abstract: Embodiments of the present invention provide a control channel position determining method, a device, and a processor-readable storage medium. A terminal device determines an available unlicensed band set and a control channel resource group, and determines at least one first unlicensed band to which at least one of control channel resource groups belongs, based on bitmap information or offset information. The at least one first unlicensed band belongs to the available unlicensed band set. Compared with that a control channel resource group is semi-statically configured to belong to a first unlicensed band, according to the embodiments of the present invention, no matter how an available unlicensed band included in an available unlicensed band set changes, a first unlicensed band to which at least one control channel resource group belongs can always be determined, thereby ensuring normal communication.

Abstract: The present disclosure relates to example data transmission methods, user equipment, and access network devices in an LAA-LTE system. An example data receiving method includes determining, by user equipment, first information of a first cell. The user equipment determines a first subframe based on the first information, where a downlink data transmission length of the first subframe is less than a first threshold. The user equipment then determines a data transmission characteristic of the cell in the first subframe based on a preset condition, so as to receive, based on the data transmission characteristic, data including the first subframe. In doing so, a data transmission characteristic of a base station or a terminal is standardized, and a reference signal such as a DRS can be correctly identified.

Abstract: Embodiments of the present invention provide an uplink control channel sending method, an uplink control channel receiving method, and an apparatus. The sending method includes: receiving, by terminal device, downlink data from a network device in each subframe in a first subframe set; obtaining, by the terminal device, first downlink control information from the network device; and sending, by the terminal device, a target physical uplink control channel in a first uplink subframe according to an indication of the first downlink control information.

Abstract: In an uplink information sending method, a terminal device receives scheduling information sent by an access network device in a first time unit. The terminal device determines a second time unit and a first time offset. The second time unit is after the first time unit, and the second time unit carries downlink information sent by the access network device. The terminal device further determines a third time unit. The third time unit is a time unit that is offset from the second time unit by the first time offset. Further, the terminal device sends first uplink information scheduled by using the scheduling information in the third time unit. In this way, information transmission flexibility and reliability can be improved.

Abstract: A data transmission method and device, the method including determining, by a first device, a data transmission pattern, where the data transmission pattern corresponds to a time domain resource, and sending, by the first device, one or more reference signals R and at least one physical channel D on the time domain resource according to the data transmission pattern, where the data transmission pattern indicates symbols that are in the time domain resource and that are used for the one or more reference signals R and the at least one physical channel D.

Abstract: The present disclosure provides a method and an apparatus for transmitting control data. The method includes: determining, by a terminal device, at least one target cell from at least one unlicensed cell; and transmitting, by the terminal device, control data in the target cell. This can implement transmission of the control data on an unlicensed spectrum resource, so that the control data can be transmitted not merely on a licensed spectrum resource, and communication reliability and user experience can be improved. In addition, this can reduce licensed spectrum resource overheads in a communication process, and increase a capacity of a communications system that has a limited quantity of licensed spectrum resources.

Abstract: Embodiments of this disclosure provide an indication information transmission method and apparatus, and relate to the communications field. The method includes: receiving, by a terminal side communications apparatus, configuration information sent by an access network side communications apparatus, where the configuration information includes identification information of at least one cell; and detecting, by the terminal side communications apparatus by using a length of a first time as a granularity, first indication information sent by the access network side communications apparatus, where the first indication information is used to indicate a transmission structure corresponding to one or more time units included in a second time of the at least one cell identified by the identification information, and the length of the first time is different from a length of the second time.

Abstract: A communication method includes receiving, by a terminal device, on an unlicensed frequency band, downlink control information sent by a network device, where the downlink control information is within a first time unit in a candidate time unit set of a plurality of candidate time unit sets, where the candidate time unit set is at least one of a plurality of consecutive time units, and wherein the candidate time unit sets are at equal intervals in the plurality of consecutive time units. The method further includes determining, by the terminal device according to a time at which the downlink control information is sent, a time window for sending uplink information, and sending, by the terminal device, the uplink information within the time window, where a start moment T1 of the time window is within the first time unit or a second time unit immediately after the first time unit.

Abstract: The method disclosed in present embodiments includes: a terminal device receives downlink data in at least one downlink burst; determines that a first downlink subframe set is associated with a first uplink subframe, where the first downlink subframe set belongs to the at least one downlink burst, the first uplink subframe is used to send first feedback information corresponding to the first downlink subframe set, the first uplink subframe is in a first uplink burst, and the first uplink burst follows the at least one downlink burst; determines a first feedback information codebook, and determines the first feedback information based on the codebook; determines a first uplink channel in the first uplink subframe; and sends the first feedback information to the access network device on the first uplink channel. According to the method, the terminal device can properly sends ACK/NACK feedback information in a U-LTE scenario.

Abstract: Embodiments of the present disclosure relate to a measurement method, user equipment, a network side device, and a measurement apparatus. The method includes: determining, by user equipment, a measurement time set and first measurement configuration information that are corresponding to a first target frequency band, where the first measurement configuration information is configuring the user equipment to perform wireless condition measurement according to identification information of a target cell; determining a status of using the first target frequency band by the target cell corresponding to the identification information; and measuring, in the measurement time set according to the status of using the first target frequency band by the target cell, a wireless condition of the first target frequency band corresponding to the target cell, to obtain a measurement result.

Abstract: A method for measuring channel state information and a related device are disclosed. The method may include: determining, by a terminal device, a first frequency resource, where Z subbands included in the first frequency resource are determined by a network device in a first time unit in Y subbands included in a second frequency resource, the second frequency resource is a downlink frequency resource allocated by the network device to the terminal device, the Y subbands are included in the X subbands, and the second frequency resource corresponds to one piece of wideband channel state information CSI, where X?Y?2, Y>Z?1, and X, Y, and Z are all integers; determining, by the terminal device, the wideband CSI based on the first frequency resource; and sending, by the terminal device, the wideband CSI to the network device in a second time unit.

Abstract: The present disclosure relates to synchronization signal block transmission methods, access network devices, and terminal devices. One example method includes determining, by an access network device, a resource set used for transmission of a synchronization signal block set in a preset time window, where the synchronization signal block set includes a first synchronization signal block and L second synchronization signal blocks, L?1, the resource set includes a plurality of first candidate resources used to transmit the first synchronization signal block and at least L second candidate resources used to transmit the L second synchronization signal blocks, and at least one of sending, by the access network device, the first synchronization signal block to a terminal device on a first resource in the plurality of first candidate resources based on a CCA result, or respectively sending N second synchronization signal blocks to the terminal device on N second resources.