Method for calculating initial power of user equipment in multi-antenna cell, base station and user equipment

Abstract

The invention provides a method for calculating the initial power of user equipment (UE) of a multi-antenna cell, a node B (NB) and the user equipment (UE). According to the method, the configuration information of the transmitting power of a primary common control physical channel (P-CCPCH) corresponding to the preset antenna number and the configuration information of the target channel receiving power which is expected to be received by cells and corresponds to the preset antenna number, are transmitted to the UE to ensure that the UE calculates the initial power of a target channel of the UE according to the configuration information of the transmitting power of the P-CCPCH corresponding to the preset antenna number and the configuration information of the target channel receiving power which is expected to be received by the cells and corresponds to the preset antenna number; and the preset antenna number is less than or equal to the total amount of the antennae of the multi-antenna cell. By adopting the method for calculating the initial power of the user equipment of the multi-antenna cell, the NB and the UE, the condition that the initial transmitting power of the UE is too high is avoided, so that uplink interferences caused by the condition are avoided.

Description

technical field [0001] Embodiments of the present invention relate to mobile communication technologies, and in particular to a method for calculating initial power of user equipment (User Equipment, UE for short) in a multi-antenna cell, a base station (Node B, NB for short) and UE. Background technique [0002] In multi-antenna cells, in order to meet the coverage requirements of special scenarios, the distributed antenna coverage method is adopted. The specific method is to divide all the antennas of the cell into several groups, where each group of antennas includes one or several antennas, each A group of antennas is used to cover a special area in the cell, so that the area can obtain good coverage. [0003] In a cell, the NB configures the transmit power of a Primary Common Control Physical Channel (P-CCPCH for short) for all UEs in the cell by broadcasting a message. The UE calculates the path loss between the UE and the NB based on the configured transmit power and...

AI Technical Summary

Problems solved by technology

Still taking the above-mentioned 8-antenna cell as an example, when the UE is in a special area covered by only 2 antennas, the above-mentioned existing configuration method is adopted, and the UE is configured according to the transmit power of the P-CCPCH configured by the above-mentioned NB through a broadcast message and the corresponding 2-antenna The demodulation threshold is used to calculate the initial power. Since the transmit power of the P-CCPCH is configured according to 8 antennas, the above method of calculating the initial power of the UE will cause the transmit power of the UE to be too large, which will cause uplink interference and affect the performance of the network.

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