PCI planning method and device for multiple co-sited sectors

Abstract

The invention provides a PCI planning method for a plurality of co-site sectors. The method comprises the steps of acquiring the neighboring cell priorities of each cell, wherein the neighboring cell priorities are composed of a co-site neighboring cell priority and a neighboring cell priority; according to physical cell identifiers (PCI) adopted in the neighboring cells of each cell and the neighboring cell priorities, allocating a PCI set to each cell; according to the above PCI set, allocating PCIs to each cell. The invention also provides a PCI planning device for the plurality of co-site sectors. The device comprises a priority calculation module, a PCI set allocation module and a PCI allocation module. According to the technical scheme of the invention, the PCI conflicting phenomenon among a plurality of co-site sectors can be effectively avoided. Therefore, the method and the device can be applied to the PCI planning of various systems.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a PCI planning method and device for multiple co-sited sectors. Background technique [0002] At present, a Long Term Evolution (Long Term Evolution, LTE) system uses a Physical Cell Identifier (Physical Cell Identifier, PCI) to identify, distinguish sectors, and the like. In the LTE protocol, the value of PCI is 0 to 503, a total of 504, which are divided into 3 groups, and each group contains 168 different IDs. [0003] At present, in the process of network construction, a base station may be configured with multiple sectors, that is, more than three sectors, under the condition that the coverage requirement needs to be met. However, the existing PCI planning algorithms are generally calculated based on the priority of adjacent cells, and the co-sited cells are all set as adjacent cells with the same priority, so that in the case of three sectors, PCI allocation can be ...

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Problems solved by technology

However, the existing PCI planning algorithms are generally calculated based on the priority of adjacent cells, and the co-sited cells are all set as adjacent cells with the same priority, so that in the case of three sectors, PCI allocation can be performed normally , there will be no conflict, but if figure 1 As shown, in the case of more than three sectors, it may result in PCI modulo 3 of two adjacent sectors co-located at the time of PCI allocation, such as figure 1 As shown in the figure on the left, the situation that leads to conflicts

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