Method and device for resource scheduling under coordinated multi-point transmission
A technology of resource scheduling and multi-point cooperation, applied in the field of wireless communication, can solve problems such as large amount of information interaction, increased X2 interface transmission delay, system performance loss, etc.
Active Publication Date: 2018-03-20
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology
[0013] To sum up, in the existing central cooperative scheduling method of coordinated multi-point transmission, the amount of information exchange between base stations is very large, and the realization of non-ideal X2 interface link may lead to a large system performance loss
Using the iterative method to realize non-central cooperative scheduling requires iterative scheduling information interaction, which will significantly increase the X2 interface transmission delay when the X2 interface delay is large
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[0038]In order to reduce the time delay of the non-central coordinated scheduling scheme under CoMP transmission and improve scheduling efficiency, an embodiment of the present invention provides a resource scheduling method under CoMP transmission.
[0039] see image 3 , an embodiment of the present invention provides a resource scheduling method under CoMP transmission, including the following steps:
[0040] Step 30: The serving base station receives the CSI reported by the user terminal, and determines the final precoding matrix forbidden to be used by the cooperative base station according to the pre-negotiation result with the cooperative base station; the CSI reported by the user terminal may include one or any combination of PMI, RI, and CQI ;
[0041] Step 31: The serving base station performs resource scheduling according to the received CSI and the final precoding matrix forbidden to be used by the coordinated base station, and transmits data to the user terminal ...
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The embodiment of the present invention discloses a resource scheduling method and equipment under coordinated multi-point transmission, relates to the field of wireless communication, and is used for reducing the time delay of a non-central coordinated scheduling scheme under coordinated multi-point CoMP transmission, so as to improve scheduling efficiency. In this solution, the serving base station determines the final precoding matrix forbidden to be used by the coordinated base station according to the pre-negotiation result with the coordinated base station, and performs resource scheduling according to the channel state information CSI reported by the user terminal and the final precoding matrix forbidden to be used by the coordinated base station. The base station performs resource scheduling according to the CSI reported by the user terminal and the final precoding matrix forbidden to be used by the cooperative base station. This solution can improve resource scheduling efficiency.
Description
technical field [0001] The present invention relates to the field of wireless communication, in particular to a resource scheduling method and equipment under coordinated multi-point transmission. Background technique [0002] In the long term evolution-advance (LTE-A) system, in order to reduce the neighbor cell interference of the user equipment (UE) at the edge of the cell coverage and improve the experience of the user terminal at the edge of the cell, coordinated multi-point transmission is adopted. Technology (coordinated-multiple-point, CoMP). The coordinated multi-point transmission technology is the cooperation between multiple geographically separated transmission points (transmission point, TP). Generally, multiple transmission points refer to base stations of different cells, or a base station of a cell and multiple RRHs controlled by it. Coordinated multi-point transmission technology can be divided into downlink cooperative transmission and uplink joint recep...
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IPC IPC(8): H04W72/12H04W88/08
CPCH04L5/0035H04L5/0073H04W72/54H04W72/20H04W72/542H04B7/0456H04B7/0626
Inventor 倪浩高秋彬
Owner DATANG MOBILE COMM EQUIP CO LTD