Method and device for reducing transmission power of uplink signal

摘要

The present disclosure provides a method for reducing the transmission power of an uplink signal, comprising: performing, by a User Equipment (UE), Component Carrier (CC) grouping on configured uplink CCs; and comparing correspondingly the transmission power of an uplink signal in each CC group with a maximum transmission power configured for the each CC group by an evolved Node B (eNB), and performing a power reduction within the CC group when the comparison result meets an intra-group power reduction condition; and/or comparing the sum of transmission powers of uplink signals in all CC groups with a maximum transmission power configured for the UE by the eNB, when the comparison result meets an inter-group power reduction condition, performing a power reduction between the CC groups. The present disclosure further provides a device for reducing the transmission power of an uplink signal. The technical solution of the present disclosure can improve the covering capability and reliability of the uplink signal in an Inter-band CA scenario, and to improve a utilization rate of a UE's uplink transmission power.

主权项

1. A method for reducing the transmission power of an uplink signal, comprising:
performing, by a User Equipment (UE), Component Carrier (CC) grouping on configured uplink CCs; comparing the transmission power of an uplink signal in each CC group with a maximum transmission power configured for each CC group by an evolved Node B (eNB), and performing a power reduction within the CC group when the comparison result meets an intra-group power reduction condition; and/or comparing the sum of transmission powers of uplink signals in all CC groups with a maximum transmission power configured for the UE by the eNB, when the comparison result meets an inter-group power reduction condition, and performing a power reduction between the CC groups; wherein the step of performing a power reduction within the CC group comprises at least one of: when an uplink signal in a CC group exceeding a maximum transmission power configured for the CC group by an eNB includes Physical Uplink Shared Channels (PUSCHs) and Physical Uplink Control Channels (PUCCHs) transmitted simultaneously, multiplying transmission powers of all PUSCHs by a same power reduction coefficient to reduce the transmission powers of all the PUSCHs with an equal proportion, until that the transmission power of the uplink signal in the CC group does not exceed the maximum transmission power configured for the CC group by the eNB; when the uplink signal in the CC group exceeding the maximum transmission power configured for the CC group by the eNB includes PUSCHs and PUCCHs, and a part of the PUSCHs carry Uplink Control Information (UCI), while other PUSCHs carry only user data, multiplying transmission powers of all the PUSCHs carrying only user data by the same power reduction coefficient to reduce the transmission powers of all the PUSCHs carrying only user data with an equal proportion, until that the transmission power of the uplink signal in the CC group does not exceed the maximum transmission power configured for the CC group by the eNB; when the uplink signal in the CC group exceeding the maximum transmission power configured for the CC group by the eNB includes more than one PUSCHs, and a part of these PUSCHs carry UCI, while other PUSCHs carry only user data, multiplying transmission powers of all the PUSCHs carrying only user data by the same power reduction coefficient to reduce the transmission powers of all the PUSCHs carrying only user data with an equal proportion, until that the transmission power of the uplink signal in the CC group does not exceed the maximum transmission power configured for the CC group by the eNB; when the uplink signal in the CC group exceeding the maximum transmission power configured for the CC group by the eNB includes more than one PUSCHs carrying only user data, multiplying transmission powers of all the PUSCHs by the same power reduction coefficient to reduce the transmission powers of all the PUSCHs with an equal proportion, until that the transmission power of the uplink signal in the CC group does not exceed the maximum transmission power configured for the CC group by the eNB; and when the uplink signal in the CC group exceeding the maximum transmission power configured for the CC group by the eNB includes more than one Sounding Reference Signals (SRSs), multiplying transmission powers of all the SRSs by the same power reduction coefficient to reduce the transmission powers of all the SRSs with an equal proportion, until that the transmission power of the uplink signal in the CC group does not exceed the maximum transmission power configured for the CC group by the eNB.