Method for Inter-Cell Interference Coordination
A technology of inter-cell interference and cell, applied in multiplexing communication, orthogonal multiplexing system, transmission monitoring, etc., can solve problems such as improper operation, inability to distinguish uplink to uplink and downlink to uplink interference, interference, etc. , to achieve the effect of improving coordination
Active Publication Date: 2018-03-09
HUAWEI TECH CO LTD
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Problems solved by technology
However, the eNB cannot differentiate between uplink-to-uplink and downlink-to-uplink interference, and thus may perform improperly
For example, an eNodeB may (unnecessarily) try to reduce the interference generated at neighboring cells by adjusting its uplink scheduling, however neighboring cells suffer from strong DL to UL interference from other eNodeBs
Method used
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[0052] To achieve the above and other objects, the present invention relates to a method in a TDD cellular radio communication system and corresponding methods in a first network control node and a second network control node. As described above, this system is a TDD system using radio frames for uplink and downlink transmission between a base station and a mobile station. Furthermore, the system comprises at least one first network control node for controlling at least one first cell and at least one second network control node for controlling at least one second cell. A control node may be a base station or another network node, such as an access point or a network controller, with corresponding capabilities to control one or more cells. The control node may, for example, be responsible for allocating radio resources and / or power control for downlink and uplink data transmission.
[0053] The method comprises the steps in the first control node of transmitting at least one ...
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The present invention relates to a method and device for inter-cell interference coordination, which are used in a cellular time-division duplex TDD wireless communication system for radio frames including uplink and downlink transmission subframes, and the system includes: for controlling at least one first cell at least one first network control node for controlling at least one second network control node of at least one second cell; said method comprising the step of: said first network control node transmitting at least one interference indicator, said interference indication The symbol is associated with one or more subframes and is also related to the downlink-to-uplink inter-cell interference IDL-to-UL and / or the uplink-to-uplink inter-cell interference IUL-to-UL between the first and second cells; The second control node receives the interference indicator; and the second network control node performs scheduling and / or power control in downlink or uplink based on the interference indicator and / or alters the A subframe configuration of one or more subframes.
Description
technical field [0001] The invention relates to a method for inter-cell interference coordination in a cellular time division duplex (TDD) wireless communication system. Furthermore, the present invention also relates to a method in a first control node, a method in a second control node, a first control node device, a second control node, a computer program and its computer program product . Background technique [0002] In an LTE TDD network, all base stations (ie eNodeBs or eNBs in LTE terminology) are usually well synchronized and use the same radio frame configuration. Therefore, in the uplink (from the UE to the base station) subframe, the base station is mainly interfered by the UE transmitting uplink signals in adjacent cells, which is called uplink-to-uplink (UL-to-UL) interference. In LTE Rel.8 to 11, the uplink inter-cell interference coordination method is used to mitigate UL-UL interference. However, in future LTE TDD networks, all base stations may use diffe...
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IPC IPC(8): H04J11/00H04W52/24H04W72/08H04B17/345H04W72/54
CPCH04W52/244H04B17/345H04J11/0053H04W72/541
Inventor 孙卫军帕布罗·索达蒂
Owner HUAWEI TECH CO LTD