A kind of pdsch power allocation method and device

Abstract

The invention relates to the communication field, and provides a method and a device for distributing PDSCH (physical downlink shared channel) power for solving the problem that existing power distribution fails to coordinate with ICIC (inter-cell interference coordination) mutually. The method comprises the following steps: according to the threshold RNTPthreshld of a cell RNTP (relative-narrowhand Tx powerindictor), determining the maximum value EA_max of an EPRE (energy per resource element) of a class A resource unit which is determined according to a cover requirement of a PDSCH on a PRB (physical resource block) with a number of nPRB when an ICIC distribution power is required to be combined; determining the maximum value EA_max_RNTP_TH of the EPRE of the class A resource unit limited by the ICIC; and according to the comparison result of the EA_max and the EA_max_RNTP_TH, determining whether the maximum launching power distributed to UE (user equipment) is limited according to the requirements of ICIC when power distribution is performed on the PRB with the number of nPRB. The method and the device can be used for achieving a better inter-cell disturbance coordination effect, and further improving the cell throughput and the spectral efficiency.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) power allocation method and device. Background technique [0002] In the LTE (Long Term Evolution, long-term evolution) system, in order to achieve the same frequency networking as much as possible, reduce the interference between cells, improve the utilization of system resources, and take into account the amount of information exchange between cells and the delay of interface interaction, etc. Limiting factors, the LTE standard stipulates the use of ICIC (Inter-Cell Interference Coordination, inter-cell interference coordination) technology to achieve the purpose of reducing inter-cell interference, and defines the relevant resources required for ICIC technology to interact on the X2 interface (inter-base station interface) ( Or called load information) restriction strategy, such as HII ...

AI Technical Summary

Problems solved by technology

Therefore, the limitation of the transmission power on the PRB brought about by the downlink ICIC technology cannot be well matched with the downlink transmission power for each UE (the power is determined by the downlink power allocation technology), which will directly restrict the performance of the downlink ICIC technology. role, affecting the overall performance of the LTE system

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