Abstract: Embodiments of this application provide a non-coherent data transmission method and a communication apparatus. In the method, a transmit end device determines, in a first constellation, a first constellation point corresponding to first to-be-modulated bits, where the first constellation point corresponds to P first symbols, P=M*N, M is a positive integer, and N is an integer greater than 1; and sends the P first symbols on N resource units by using M antenna ports, or sends P second symbols determined based on the P first symbols, and foregoes sending demodulation reference signals of the P first symbols or the P second symbols. In the method, a constellation is designed, and each constellation point in the constellation corresponds to a plurality of resource units so that data can be transmitted with no need to transmit a reference signal, and only the data needs to be transmitted.

Abstract: A pressure cooking appliance is provided. The pressure cooking appliance comprises a cooker body and a lid, the lid comprising an upper lid portion, and a lower lid portion lockingly covering the cooker body to form a pressurized cooking chamber therebetween. The upper lid portion covers the lower lid portion from above, and comprises a main lid body and a removable cover, the main lid body comprising an opening portion formed at a central portion of the main lid body for exposing the lower lid portion, the removable cover being removably attachable to the opening portion and operable to expose a portion of the lower lid portion for accelerated cooling of the cooking chamber and speeding up wait time for opening the lid. Further, cooling towel or cooling pack can be placed at the opening portion to help with cooling and allow food to be enjoyed sooner.

Abstract: Embodiments of the present invention disclose a reference signal transmission method, including: sending, by a terminal, a first reference signal and a second reference signal; and correspondingly, receiving, by a network device, the first reference signal and the second reference signal, where the first reference signal is mapped to a plurality of symbols and is used for estimation of channel state information, the second reference signal is mapped to at least two of the plurality of symbols and is used for phase tracking, and a subcarrier to which the second reference signal is mapped on one of the at least two symbols has a same frequency-domain location as a subcarrier to which the second reference signal is mapped on the rest of the at least two symbols. With the foregoing solution, accuracy of channel state information estimation can be improved.

Abstract: A pot lid assembly configured to cover a pot body. The pot lid assembly comprises a pot lid and a mixing machine. The mixing machine includes an electric motor and a mixing apparatus. The mixing apparatus includes a stirring rod and a plurality of stirring vanes positioned on the stirring rod. The electric motor includes a rotary shaft operatively connected with the stirring rod so that the electric motor can cause the stirring rod to rotate. The pot lid is configured to cover the pot body to form a closed cooking space. When the pot lid is removed from the pot body, the mixing apparatus remains located in the cooking space of the pot body. When the pot lid assembly of the present application is in use, the mixing apparatus remains in the cooking space of the pot body after the removal of the pot lid.

Abstract: A pot lid assembly comprises a pot lid, an electric motor assembly and a mixing apparatus. The electric motor assembly is fixed to the pot lid. The mixing apparatus includes a stirring rod and a plurality of stirring vanes. The electric motor assembly includes an electric motor. The electric motor includes a rotary shaft operatively connected with the stirring rod so that the electric motor can cause the stirring rod to rotate. The pot lid is configured to cover the pot body to form a closed cooking space. When the pot lid is removed from the pot body, the rotary shaft is disengaged from the stirring rod, and the mixing apparatus can stand in the cooking space of the pot body, with the stirring vanes serving as a support. The mixing apparatus remains in the cooking space of the pot body after the removal of the pot lid.

Abstract: Disclosed in an embodiment of the present application is a mixing apparatus, mixing machine, and cooking utensil. A mixing apparatus that can be fitted to an electric motor assembly. The electric motor assembly is able to drive the mixing apparatus to rotate for mixing food ingredients. The mixing apparatus comprises a connection part, stirring rods extended from the connection part and stirring bars. The positions at which the stirring bars are fitted to the stirring rods can be adjusted based on the type and quantity of food ingredients to increase mixing uniformity.

Abstract: An optical device includes a display that emits light through a polarization grating and then through a field lens toward a lightguide. Display light reflects from lightguide surfaces by total internal reflection (TIR). The display is mounted proximate to the lightguide. The optical device includes a first surface at an eye-side of the optical device and a second surface at a world-side. The optical device includes a first material having a first Abbe number and a second material having a second Abbe number different from the first Abbe number. The polarization grating, the first material, and the second material cause a color correction to light from the display or alter a chromatic aberration of the light from the display. A head mountable frame supports the display and the lightguide including the first and second materials.

Abstract: A reference signal transmission method includes: sending, by a terminal, a first reference signal and a second reference signal; and correspondingly, receiving, by a network device, the first reference signal and the second reference signal, where the first reference signal is mapped to a plurality of symbols and is used for estimation of channel state information, the second reference signal is mapped to at least two of the plurality of symbols and is used for phase tracking, and a subcarrier to which the second reference signal is mapped on one of the at least two symbols has a same frequency-domain location as a subcarrier to which the second reference signal is mapped on the rest of the at least two symbols. With the foregoing solution, accuracy of channel state information estimation can be improved.

Abstract: This application relates to the field of communications technologies and discloses a signal transmission method and device, and a system. The method includes: determining, by a first device after receiving first information transmitted by a second device, to perform at least one of interference measurement and channel measurement on a resource, or to transmit a reference signal on a resource. The second device can configure the resource of the reference signal for the first device by transmitting the first information to the first device that is in a transmitting state or a receiving state, thereby improving flexibility of resource configuration of the reference signal. When this technical solution is applied to cross interference measurement, accuracy of inter-UE interference measurement is improved.

Abstract: Embodiments of this application provide an information transmission method and a device. The method includes: sending, by a first device, indication information to a second device, where the indication information is used to indicate a report mode, and the report mode specifies content of measurement information to be reported by the second device; and receiving, by the first device, the measurement information sent by the second device, where the measurement information includes a measurement result that is obtained by the second device based on a reference signal sent by the first device, the reference signal is sent through transmit ports of the first device, the measurement information includes information about transmit port groups corresponding to the transmit ports, and the transmit port groups corresponding to the transmit ports are determined by using reception information of the second device.

Abstract: Embodiments provide a method for transmitting a reference signal between a base station and a terminal. In this method, a parameter is determined by a terminal based on frequency domain location information of a frequency domain resource unit. The parameter is used to determine a sequence of the reference signal, and the reference signal is carried on the frequency domain resource unit. The reference signal can be sent to the base station by the terminal. In some embodiments, the reference signal sent by the base station can be received by the terminal. According to this method, a peak-to-average power ratio when a single terminal sends data to a base station can be reduced, and communication interference between different cells can be canceled or reduced as much as possible.

Abstract: This application provides a communication method, a terminal, and a network device. The method includes: receiving, by a terminal, indication information from a network device, where the indication information includes an identifier of at least one reference signal; and determining, by the terminal, that there is a correspondence between a resource used to send a first channel and a first reference signal of the at least one reference signal, where the first channel is a channel to be transmitted by the terminal, and there is a spatial quasi co-location (QCL) relationship between a port of the first channel and a port of the first reference signal, or there is a spatial QCL relationship between a port of a demodulation reference signal of the first channel and a port of the first reference signal.

Abstract: This application provides an information transmission method and a communications device. A first communications device sends first indication information to a second communications device, where the first indication information indicates a frequency resource used by the second communications device to send data in a time unit and a frequency resource used by the second communications device to receive data in the time unit, the frequency resource used to send data and the frequency resource used to receive data belong to a same frequency band, the frequency resource used to send data and the frequency resource used to receive data are differentiated based on frequencies in the time unit, and the frequency band is a segment of continuous frequency resources in frequency domain. In the foregoing information transmission method, the first communications device can flexibly allocate the frequency resources based on a network requirement, thereby improving resource utilization.

Abstract: A control information sending/receiving method and device are provided, to implement indicating a time-frequency location of a control channel to a terminal device in a 5G NR system or a future evolved LTE system. The method includes: receiving, by a terminal device, broadcast information; determining, from at least two predefined time-domain locations, a time-domain location of a broadcast channel carrying the broadcast information; determining a time-domain location of a control channel based on the time-domain location of the broadcast channel; and performing control channel detection in the determined time-domain location of the control channel.

Abstract: The present disclosure relates to beam configuration methods and apparatus. One example method include receiving beam configuration information from a network device, where the beam configuration information indicates a terminal device to transmit or receive a signal by using a first beam, and transmitting or receiving the signal by using at least the first beam after a first preset duration starting from a first time-domain unit, where the first time-domain unit is an unlink slot in which an acknowledgement (ACK) message for the beam configuration information is transmitted to the network device.

Abstract: This application provides a method for reporting port information, a terminal device, and a network device. The method includes: determining, by a terminal device, an uplink signal, where the uplink signal includes information about a phase tracking reference signal (PTRS) port of the terminal device, or the uplink signal includes information about the PTRS port and information about a demodulation reference signal (DMRS) port, or the uplink signal includes a correspondence between the PTRS port and the DMRS port; and sending, by the terminal device, the uplink signal to a network device. In embodiments of this application, the terminal device reports the uplink signal to the network device, so that the network device does not need to configure different PTRS ports for DMRS ports, to avoid configuring excessive PTRS ports, thereby saving PTRS port resources.

Abstract: A computer-implemented method, system, and computer program product are provided for enhanced search strategies. The method includes selecting, by a processor device, known candidate sources related to a search topic. The method also includes ranking, by the processor device, keyphrase candidates from the known candidate sources according to inter-topic weighting. The method additionally includes assembling, by the processor device, a search string of a predetermined number of top ranked keyphrase candidates. The method further includes generating, by the processor device, new candidate sources from a candidate source repository responsive to the search string. The method also includes defining, by the processor device, a candidate source pool by the known candidate sources and the new candidate sources to reduce user search times on computer interface devices.