Abstract:
Embodiments of the present invention disclose a precoding method and an apparatus for heterogeneous network coordinated multi-point transmission. The method includes the following steps: 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 present invention is applicable to a heterogeneous network coordinated multi-point transmission environment.
Abstract:
An example vehicle charging method includes: obtaining a status of a first battery pack in a first mobile charging facility; in response to determining that the first battery pack is in a charging state or a fully charged state, obtaining a second state of energy sent by a second mobile charging facility, where the second mobile charging facility is charging a first vehicle, and the second state of energy is a state of energy of a second battery pack in the second mobile charging facility; and in response to at least that a first state of energy and the second state of energy meet a first preset condition, sending a first indication signal to the first mobile charging facility for indicating the first mobile charging facility to charge the first vehicle.
Abstract:
A data transmission indication method and apparatuses carrying out the method are described herein. The method includes sending, by an access point, orthogonal frequency division multiple access (OFDMA) physical layer signaling to a terminal. The OFDMA physical layer signaling indicates, to the terminal, a subchannel allocated for the terminal, so that the terminal determines the subchannel according to the OFDMA physical layer signaling. The OFDMA physical layer signaling includes an identifier of the terminal and subchannel information corresponding to the identifier of the terminal. A manner in which the access point allocates a subchannel for each terminal according to OFDMA physical layer signaling enables the access point to indicate subchannels for more terminals.
Abstract:
The present application discloses a subband switching method, including: determining, by a network device, a target subband to which user equipment is to switch; sending, by the network device, identification information of the target subband to the user equipment; determining configuration information of the target subband according to the identification information of the target subband; and switching, by the user equipment, to the target subband according to the configuration information of the target subband. In the subband switching method provided in embodiments of the present application, switching between subbands can be implemented, so that when the UE has a subband switching requirement, the user equipment can be instructed to switch to a target subband. Therefore, service quality of the UE is improved.
Abstract:
A grant-free resource configuration method and an apparatus are provided. The method includes: listening to, by a terminal device, a physical downlink control channel on a paging occasion by using a grant-free resource configuration identifier; and obtaining, by the terminal device on the physical downlink control channel or a physical downlink shared channel indicated by the physical downlink control channel, grant-free resource configuration information sent by a network device. In this grant-free resource configuration solution, the terminal device listens to a physical downlink control channel on a same paging occasion by using different identifiers, and obtains grant-free resource configuration information. A configuration occasion is preset, to ensure that the grant-free resource configuration information can be effectively received by the terminal device. In addition, the grant-free resource configuration identifier is used, to facilitate grant-free resource configuration for the terminal device.
Abstract:
This disclosure includes a data transmission method, a network device, a terminal device, and a base station. In the data transmission method, a target network device receives data sent by a target base station. The data is sent by a terminal device to the target base station, and the data includes identification information of the terminal device. When the target network device acknowledges, by using the identification information, that the terminal device has not been registered with the target network device, the target network device obtains user information of the terminal device. After the target network device obtains the user information of the terminal device, the target network device sends the data to a gateway. By using the data transmission method, the network device, the terminal device, and the base station disclosed in this patent application, the terminal device can still properly perform data transmission during movement.
Abstract:
Embodiments of the present invention provide a data transmission method for a multi-transmission time interval TTI system, including: generating a data frame including a self-contained feedback; and transmitting the data frame on a plurality of subbands obtained by dividing one carrier, where at least two of the plurality of subbands have different TTIs; and parameters of self-contained feedbacks of the at least two of the plurality of subbands are the same, and time lengths of the self-contained feedbacks of the at least two of the plurality of subbands are the same. By configuring a self-contained feedback across subbands, a problem of excessively low resource utilization of self-contained feedbacks resulting from different TTIs and waveform parameter configurations of the subbands can be resolved. According to the embodiments of the present invention, resource utilization of the self-contained feedback can be improved.
Abstract:
Embodiments of the present invention provide a data transmission method and apparatus. The method includes: determining a contention transmission unit CTU to be used by to-be-sent uplink data, where the CTU is a transmission resource including at least a time domain resource, a frequency domain resource, and a code domain resource; encoding the to-be-sent uplink data by using N different code element groups in the code domain resource corresponding to the determined CTU, to obtain N groups of encoded data, where N is a positive integer greater than or equal to 2; and sending the N groups of encoded data by using the time domain and frequency domain resources that are corresponding to the determined CTU. According to the embodiments of the present invention, data reception reliability at a receive end can be improved.
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 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.