Transmitting method of cell downlink signal for realizing cell subdomain allocation
A domain configuration and cell technology, applied in the direction of transmission control/equalization, etc., can solve the problems of unable to meet the high performance requirements of the base station supporting the cell domain configuration mode, power waste, and prone to overload protection
Inactive Publication Date: 2010-06-09
ZTE CORP
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Problems solved by technology
The problem with this method is that when a cell area with a smaller transmission power capability is selected as a reference cell area for the radio network controller (RNC, Radio Network Controller) to configure power, the cell area with a larger downlink transmission capability The power will be wasted; and when a cell area with a large downlink transmission capability is selected as a reference cell area for RNC configuration power, the power of a cell area with a small downlink transmission capability is prone to overload protection
[0008] Obviously, the above-mentioned method cannot meet the high-performance requirements of the base station to support the cell domain configuration mode
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[0066] The method for transmitting a downlink signal of a cell configured in a cell area provided by the present invention includes:
[0067] a. The base station side compensates the power deviation of each cell area according to the maximum transmission power of the cell, and obtains the actual configuration power of each cell area; performs overload protection processing on the actual configuration power of each cell area to ensure that the same cell area The sum of the multi-carrier time slot transmit power of each cell area does not exceed the local antenna channel transmission capability of each cell area, so as to determine the final downlink carrier time slot power and corresponding cell power of each cell area; then use non-cell area The method for calculating the downlink code channel power in a cell under domain configuration, obtains the virtual code channel power in the reference cell area; then compensates the power deviation of each cell area for the virtual code ...
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The invention relates to a method for realizing downlink signal transmission in a cell of cell subdomain allocation. The method comprises the following steps that: (a) a base station compensates the power deviation of each cell subdomain according to maximum cell transmitting power and carries out overload protection of the acquired actual allocated power of each cell subdomain to ensure that the sum of multi-carrier slot transmitting power of each cell subdomain is not more than the transmitting capacity of local antenna channels of each cell subdomain, thereby determining the final downlink carrier slot power of each cell subdomain and cell power, and then compensates the power deviation of each cell subdomain by virtual code channel power within a reference cell subdomain obtained through a method which calculates downlink code channel power by a common cell to acquire actual code channel power; and (b) the base station transmits a cell downlink signal according to the cell power, downlink carrier slot power and code channel power of each cell subdomain. The method eliminates influences generated due to different transmitting capacities of single antenna channels of cell subdomains and prevents carrier slot transmitting power overload of the base station.
Description
technical field [0001] The present invention relates to the power configuration and transmission method of a downlink signal of a base station to a cell in a wireless communication system, in particular to a third-generation mobile communication system, such as Time Division Code Division Multiple Access (TD-CDMA, Time Division-Code Division Multiple Access), Time Division Synchronization Code In a mobile communication system such as TD-SCDMA, Time Division-Synchronous Code Division Multiple Access, a base station pair supports a Cell Portion (CP, Cell Portion) configuration mode to realize a cell downlink signal transmission method. Background technique [0002] The 3GPP protocol requires the cell to support the configuration mode of the cell area. It is a networking method between the full macro base station networking and the full radio remote. Different cell areas in the same cell cover different areas. Different cell areas use different types of remote radio unit (RRU...
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IPC IPC(8): H04B7/005
Inventor 章健丁美玲段然高扬
Owner ZTE CORP
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