Time-frequency enhancing inter-cell interference coordination method based on carrier aggregation

A technology of inter-cell interference and coordination methods, applied in multi-frequency code systems, advanced technologies, network planning and other directions, and can solve problems such as inter-cell control channel interference

Active Publication Date: 2013-12-25
上海瀚芯实业发展合伙企业(有限合伙)
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  • Application Information

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Problems solved by technology

[0004] Purpose of the invention: In view of the fact that the existing inter-cell interference coordination method cannot effectively solve the problem of inter-cell control channel interf

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  • Time-frequency enhancing inter-cell interference coordination method based on carrier aggregation
  • Time-frequency enhancing inter-cell interference coordination method based on carrier aggregation
  • Time-frequency enhancing inter-cell interference coordination method based on carrier aggregation

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Embodiment Construction

[0046] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0047] A time-frequency enhanced inter-cell interference coordination method based on carrier aggregation, taking the macro-pico scenario in an LTE-A heterogeneous cellular network as an example to give an embodiment:

[0048] Suppose there are num near the central macro station pico pico eNBs, and the distance between the pico eNBs is relatively long, so that the interference between the pico eNBs is relatively small. In order to balance the load of the entire network and balance the uplink and ...

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Abstract

The invention discloses a time-frequency enhancing inter-cell interference coordination method based on carrier aggregation. The method comprises the following steps: defining a component carrier of a sending user PDCCH to be a PCC and a component carrier of a sending user PDSCH to be an SCC, considering a scenario which has pico eNBs with the number of numpico at the position closer to a central macro station, wherein the distances between the pico eNBs are farther; performing cell range expanding on pico, on the premise that a central macro cell is an interference source cell and pico users undergo severe downlink interference from the central macro cell, performing ranking from low to high according to center frequency points of all the component carriers, and performing configuration of a cell specific candidate PCC, configuration of a low-power PDSCH subframe, configuration of a cell specific candidate SCC and dispatch of the component carriers. On the premise that all the cells serve as the spectral efficiency of one system, the user PDCCH SINR and PDSCHSINR of the pico cell are improved, and edge user throughput and cell throughput have large gain.

Description

technical field [0001] The invention relates to a method for coordinating inter-cell interference with time-frequency enhancement based on carrier aggregation in a heterogeneous cellular network, and belongs to the field of network technology in mobile communication. Background technique [0002] In order to improve the communication capacity of the hotspot area and compensate for the coverage holes at the edge of the macro cell, the LTE-A (Long Term Evolution-Advanced) system introduces a heterogeneous network and deploys low-power Nodes (such as home base station (HeNB), pico base station (pico eNB), relay (Relay), etc.). To ensure the spectral efficiency of the system, macro cells and low-power nodes are usually co-channel deployed. At this time, there are both same-layer (that is, the same type of sites or cells) interference and cross-layer (that is, different types of sites or cells) interference in the entire system. The interference problem of the control channel un...

Claims

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Application Information

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IPC IPC(8): H04W16/14H04L27/26
CPCY02D30/70
Inventor 潘志文陈国平尤肖虎刘楠
Owner 上海瀚芯实业发展合伙企业(有限合伙)
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