Method for determining uplink power, method for determining scheduling information, terminal and network side device

A method for determining scheduling information, performed by a network side device, comprising:

• determining scheduling information of an uplink signal according to a preset transmission power control rule of the uplink signal, wherein the scheduling information at least indicates related information of Q subbands, Q is a positive integer;
• transmitting the scheduling information to a terminal;
• the transmission power control rule of the uplink signal includes:
• determining, by the terminal, a first power scaling coefficient according to the scheduling information;
• determining, by the terminal, transmission power of the uplink signal according to the first power scaling coefficient;
• wherein the determining, by the terminal, the first power scaling coefficient according to the scheduling information, comprises:
• determining, by the terminal, at least one of a precoding matrix, a number of non-zero antenna ports, or a number Q of subbands for non-zero transmission of the uplink signal according to the scheduling information;
• determining, by the terminal, the first power scaling coefficient according to at least one of the precoding matrix, the number of non-zero antenna ports, or the number Q of subbands;
• wherein the number of non-zero antenna ports is N, and N>1;
• wherein the related information of Q subbands comprises at least one of:
• a precoding matrix corresponding to the Q subbands,
• the number of transmission layers corresponding to the Q subbands, or
• SRS resource indication information corresponding to the Q subbands;
• wherein, the determining, by the terminal, the transmission power of the uplink signal according to the first power scaling coefficient comprises at least one of:
• determining, by the terminal, a first non-zero antenna port according to the first power scaling coefficient and a number of resource elements (REs) for the non-zero transmission of the uplink signal corresponding to the non-zero antenna ports;
• determining, by the terminal, transmission power of the first non-zero antenna port on one non-zero transmitted RE according to the first power scaling coefficient;
• or
• determining, by the terminal, the transmission power of each non-zero antenna port on each non-zero transmitted RE of the each non-zero antenna port according to the first power scaling coefficient;
• determining, by the terminal, the transmission power of each non-zero antenna port corresponding to the Q sub-bands on each non-zero transmitted RE, according to a minimum transmission power among the transmission power of each non-zero antenna port corresponding to each sub-band in the Q sub-bands on each non-zero transmitted RE;
• and/or
• wherein, in the case that the transmission power of the uplink signal includes the total transmission power of the uplink signal, the determining, by the terminal, the transmission power of the uplink signal includes any one of the following:
• determining, by the terminal, transmission power of the uplink signal in each subband according to the total transmission power of the uplink signal and the number Q of subbands, wherein Q>1;
• or
• determining, by the terminal, transmission power of the uplink signal of each non-zero antenna port according to the total transmission power of the uplink signal and the number of the non-zero antenna ports;
• and/or
• wherein, in the case that the transmission power of the uplink signal includes the transmission power of the uplink signal in Q subbands, the determining, by the terminal, the transmission power of the uplink signal includes any of the following:
• dividing, by the terminal, evenly the transmission power of the uplink signal into the non-zero antenna ports according to the transmission power of the uplink signal in the Q subbands and the number of non-zero antenna ports corresponding to the Q subbands;
• determining, by the terminal, the transmission power of the uplink signal of each non-zero antenna port corresponding to each subband according to the transmission power of the uplink signal in the Q sub-bands and a proportion of a number of each non-zero antenna port corresponding to the Q sub-bands to a number of all non-zero antenna ports corresponding to the Q sub-bands, wherein Q>1;
• determining, by the terminal, the transmission power of the uplink signal of each non-zero antenna port corresponding to the Q subbands according to the transmission power of the uplink signal in the Q subbands and a proportion of a number of non-zero elements corresponding to each non-zero antenna port included in a precoding matrix corresponding to the Q subbands to a number of all non-zero elements in the precoding matrix;
• wherein the determining, by the terminal, the transmission power of the uplink signal of each non-zero antenna port according to the total transmission power of the uplink signal and the number of non-zero antenna ports, includes any one of the following:
• dividing, by the terminal, evenly the transmission power of the uplink signal into each non-zero antenna port according to the total transmission power of the uplink signal and the number of non-zero antenna ports;
• determining, by the terminal, the transmission power of the uplink signal of each non-zero antenna port according to the total transmission power of the uplink signal and a proportion of a number of non-zero antenna ports corresponding to each sub-band to a number of all non-zero antenna ports corresponding to each sub-band;
• determining, by the terminal, the transmission power of the uplink signal of each non-zero antenna port according to the total transmission power of the uplink signal and a proportion of a number of non-zero elements corresponding to each non-zero antenna port in a precoding matrix corresponding to each sub-band to a number of all non-zero elements in the precoding matrix.

A terminal, comprising:

• a transceiver, a memory, a processor, and a computer program stored in the memory and executed by the processor, wherein the processor implements the following steps when executing the computer program:
• receiving scheduling information of an uplink signal, wherein the scheduling information at least indicates related information of Q subbands, Q is a positive integer;
• determining a first power scaling coefficient according to the scheduling information;
• determining transmission power of the uplink signal according to the first power scaling coefficient;
• wherein the determining a first power scaling coefficient according to the scheduling information comprises:
• determining at least one of a precoding matrix, a number of non-zero antenna ports, or a number Q of subbands for non-zero transmission of the uplink signal according to the scheduling information;
• determining the first power scaling coefficient according to at least one of the precoding matrix, the number of non-zero antenna ports, or the number Q of subbands;
• wherein the number of non-zero antenna ports is N, and N>1;
• wherein the related information of Q subbands comprises at least one of:
• a precoding matrix corresponding to the Q subbands,
• the number of transmission layers corresponding to the Q subbands, or
• SRS resource indication information corresponding to the Q subbands;
• wherein, the determining the transmission power of the uplink signal according to the first power scaling coefficient comprises at least one of:
• determining a first non-zero antenna port according to the first power scaling coefficient and a number of resource elements (REs) for the non-zero transmission of the uplink signal corresponding to the non-zero antenna ports;
• determining transmission power of the first non-zero antenna port on one non-zero transmitted RE according to the first power scaling coefficient,
• or
• determining the transmission power of each non-zero antenna port on each non-zero transmitted RE of the each non-zero antenna port according to the first power scaling coefficient;
• determining the transmission power of each non-zero antenna port corresponding to the Q sub-bands on each non-zero transmitted RE, according to a minimum transmission power among the transmission power of each non-zero antenna port corresponding to each sub-band in the Q sub-bands on each non-zero transmitted RE;
• and/or
• wherein, in the case that the transmission power of the uplink signal includes the total transmission power of the uplink signal, the determining the transmission power of the uplink signal further comprises any one of the following:
• determining transmission power of the uplink signal in each subband according to the total transmission power of the uplink signal and the number Q of subbands, wherein Q>1;
• or
• determining transmission power of the uplink signal of each non-zero antenna port, according to the total transmission power of the uplink signal and the number of the non-zero antenna ports,
• and/or
• wherein, in the case that the transmission power of the uplink signal includes the transmission power of the uplink signal in Q subbands, the determining the transmission power of the uplink signal includes any of the following:
• dividing evenly the transmission power of the uplink signal into the non-zero antenna ports according to the transmission power of the uplink signal in the Q subbands and the number of non-zero antenna ports corresponding to the Q subbands;
• determining the transmission power of the uplink signal of each non-zero antenna port corresponding to each subband according to the transmission power of the uplink signal in the Q sub-bands and a proportion of a number of each non-zero antenna port corresponding to the Q sub-bands to a number of all non-zero antenna ports corresponding to the Q sub-bands, wherein Q>1;
• determining the transmission power of the uplink signal of each non-zero antenna port corresponding to the Q subbands according to the transmission power of the uplink signal in the Q subbands and a proportion of a number of non-zero elements corresponding to each non-zero antenna port included in a precoding matrix corresponding to the Q subbands to a number of all non-zero elements in the precoding matrix;
• wherein the determining the transmission power of the uplink signal of each non-zero antenna port according to the total transmission power of the uplink signal and the number of non-zero antenna ports, includes any one of the following:
• dividing evenly the transmission power of the uplink signal into each non-zero antenna port according to the total transmission power of the uplink signal and the number of non-zero antenna ports;
• determining the transmission power of the uplink signal of each non-zero antenna port according to the total transmission power of the uplink signal and a proportion of a number of non-zero antenna ports corresponding to each sub-band to a number of all non-zero antenna ports corresponding to each sub-band;
• determining the transmission power of the uplink signal of each non-zero antenna port according to the total transmission power of the uplink signal and a proportion of a number of non-zero elements corresponding to each non-zero antenna port in a precoding matrix corresponding to each sub-band to a number of all non-zero elements in the precoding matrix.