Load equalization method among frequency points of N frequency point cell
A frequency point and cell technology, applied in the field of load balancing between frequency points, can solve problems such as frequency point overload and resource surplus
Inactive Publication Date: 2008-06-11
ZTE CORP
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide a load balancing method between frequency points of N frequency point cells in a TD-SCDMA system, so as to ensure that the resources in the selected frequency points are sufficient to support the current business and avoid load imbalance between the frequency points. Both lead to the overload of frequency division points in the cell and the remaining resources
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[0024] Such as figure 1 Shown, the step flow process of the inventive method is as follows:
[0025] Step S100: service access to an N-frequency cell triggers frequency point selection;
[0026] Step S101: query the RU occupancy of each frequency point in the target cell, the maximum allowable downlink transmission power and the maximum allowable uplink interference value from the radio network controller (Radio Network Controller, RNC) resource table;
[0027] Step S102: According to the Node B public measurement report, obtain the occupancy of the downlink carrier transmit power of each frequency point in the target cell and the interference (interference signal code power) occupancy of each frequency point uplink and each time slot;
[0028] Step S103: Obtain the uplink and downlink signal-to-interference ratios of each frequency point in the target cell from the background configuration;
[0029] Step S104: Judging whether the selection of the secondary frequency point i...
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The present invention provides a load balancing method between frequency points of a N frequency point cell and comprises that: the procedure S110: the wireless channel occupation, downlink emissive power occupation and each uplink time-slot interference occupation of each frequency point in a target cell are inquired from a resource table of a wireless network controller; the procedure S120: according to a common measuring report of a network node B, the downlink emissive power occupation and each uplink time-slot interference occupation of each frequency point in the target cell are achieved; the procedure S130: the signal-interference ratio between the uplink and the downlink of each frequency point in the target cell is acquired from a background configuration; the procedure S140: the downlink emissive power increment and the uplink interference increment caused by user equipment being connected to each frequency point in each time-slot are calculated; the procedure S150: the numbers of the allocatable downlink wireless channel and the allocatable uplink wireless channel of each frequency point are calculated; the procedure S160: the usable frequency points are selected; the procedure S170: the target frequency point is determined. The method provided by the invention not only ensures that the resource of the selected frequency point can support the current business adequately but also avoids overloading of partial frequency points and the surplus of partial resource in the cell caused by the load imbalance between the frequency points and has good maneuverability.
Description
technical field [0001] The invention belongs to the technical field of mobile communication, and in particular relates to an inter-frequency load balancing method for an N-frequency cell in a Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) system. Background technique [0002] In a wireless communication system, due to the small capacity of a single-frequency cell, multiple frequency points with the same coverage are often superimposed to meet the capacity requirements. This method is called the superposition method of cells with different frequencies and the same coverage. In the superposition method of cells with different frequencies and the same coverage, the frequency point selection method is either based on the principle of the minimum or maximum number of remaining RUs, or the principle of minimum interference. The operation is simple, but multiple frequency points with the same coverage will interfere with the measurement, etc. . [0003] In the ...
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IPC IPC(8): H04Q7/36H04J13/02H04W28/08
Inventor 沙秀斌
Owner ZTE CORP