Communication controlling method in mobile communication system, and base station therefor

Abstract

In the case that PDSCH is only transmitted by a specific base station and DPCH is transmitted by multiple base stations at the same time, and the transmission power of PDSCH is controlled according to DPCH, the optimal value of the power ratio between PDSCH and DPCH is optimized according to the position of the mobile station, so that in the soft Regardless of the location of the mobile station during handover, the receiving quality of PDSCH remains constant at a stable level. In a specific base station, the ratio between the transmission power of PDSCH and the transmission power of DPCH as a dedicated channel is controlled, so that the ratio can be optimized according to the position of the mobile station in soft handoff, so that it can become according to the soft handoff in the mobile station. The measured value of the received power of the shared channel or the dedicated channel of the handover base station determines the ratio. Specifically, the mobile station notifies the specific base station of these measurement results, and the notified characteristic base station multiplies the measurement results by a coefficient determined according to the transmission power of the DPCH which is a dedicated channel transmitted by the base station itself and transmits it.

Description

technical field [0001] The present invention relates to the communication control method used in the mobile communication system and the base station and the program storage medium used therein, especially relates to the related soft handover of the channel switching from the base station to the mobile station in the CDMA (Code Division Multiple Access) cellular mobile wireless communication system Switched communication control method. Background technique [0002] One of the cellular mobile communication systems is the HSDPS (High Speed ​​Downlink Packet Access) mode, which is a mode that uses A technique for transmitting packet data on a high-speed downlink shared channel (only for downlink) called HS-PDSCH (High Speed ​​Physical Downlink Shared Channel). It is such a mode that this high-speed downlink shared channel called HS-PDSCH is shared in terms of time (time division) when a large amount of data has to be transmitted to multiple mobile stations at the same time, s...

AI Technical Summary

Problems solved by technology

[0016] Corresponding to the method of determining the transmission power of PDSCH shown in the aforementioned formula (1), it is a two-step control method, wherein among a plurality of base stations in the soft handover state, if the base station that established the PDSCH is moving Taichung (primary, ie "primary") has a higher receiving power of CPICH, and the C in the formula (1) is given as C primary , and by assigning C to C non-primary To determine the transmit power of PDSCH, this method leads to the problem that continuous and precise control cannot be exerted

More specifically, there is a defect that the reception quality of PDSCH cannot be maintained at a stable level regardless of the location of the mobile station 10 in soft handover.

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