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Interference coordination method of downlink multi-antenna multiple base stations and base station

An interference coordination and base station technology, applied in the field of communication, can solve the problems of unreasonable design of downlink multi-base station interference coordination indication, and achieve the effects of less delay, simple implementation and less signaling overhead.

Inactive Publication Date: 2011-07-13
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The purpose of the present invention is to provide a novel multi-antenna multi-base station interference coordination method and a base station for the problem that the design of the downlink multi-base station interference coordination indication in the prior art is not reasonable enough

Method used

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  • Interference coordination method of downlink multi-antenna multiple base stations and base station
  • Interference coordination method of downlink multi-antenna multiple base stations and base station
  • Interference coordination method of downlink multi-antenna multiple base stations and base station

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Embodiment

[0063] Example scenario: the user equipment in the cell feeds back the downlink channel information of the base station and / or the downlink channel information of the neighboring base stations to the base station. The feedback may use specific feedback signaling, or may be an uplink signal sent by the user equipment. reference signal. Background interface communication exists between base stations, and the background interface refers to X2 interfaces 300-304 and / or air interfaces "A1 interface" 310-314 and / or S1 interfaces 320-324. In addition, the communication frequency of the background interface is at most once every 20 ms.

[0064] It should be pointed out that the assumptions adopted in the scenarios of the embodiments are only examples for the convenience of illustrating the implementation of the present invention, and the application of the present invention is not limited by these assumptions, and is completely applicable to other assumptions. It should be considered...

example 1

[0101] Example 1: Two-dimensional table, signaling of interference coordination indication sequence. The interference coordination indication sequence is directly used as signaling.

[0102] The interference coordination indication indicates information about spatial beams that the serving base station may want to use. use Figure 4 shown in the indicated form, the schematic diagram of the example is shown in Image 6 shown. Assuming that there are 16 beams to quantify and divide the airspace, for spectrum resource blocks 1 to 10, the interference coordination indication signaling on each airspace beam of each spectrum resource block is a two-level indication, and the signaling of the bit string type is used, that is, "1" means that the serving base station may use the beam at the corresponding position in the next 20 ms, and "0" means that it is not "1". Therefore, the interference coordination indication signaling is formed by concatenating the interference coordination ...

example 3

[0105] Example 3: Two-dimensional table, signaling of interference coordination indication sequence. The interference coordination indication sequence is directly used as signaling.

[0106] The interference coordination indication indicates information about spatial beams that the serving base station may want to use. use Figure 5 shown in the indicated form, the schematic diagram of the example is shown in Figure 8 shown. Assuming that there are 16 beams to quantify and divide the airspace, for spectrum resource blocks 1 to 10, the interference coordination indication signaling on each airspace beam of each spectrum resource block is a multi-level indication, and the enumeration type of signaling is adopted, that is, "High" means that the serving base station has a high level in the next 20ms, and may use the corresponding beam. "Medium" means that the serving base has a medium level in the next 20ms, and may use the corresponding beam." "Low" means that the serving ba...

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Abstract

The invention provides a base station used in a downlink multi-antenna multi-base station system, and the base station provided by the invention comprises a spatial information acquisition unit used for obtaining the spatial characteristic information of downlink interference, an interference coordination instruction generation unit used for generating interference coordination instructions according to the spatial characteristic information of downlink interference obtained by the spatial information acquisition unit, and a background interface communication unit used for sending the generated interference coordination instructions to the adjacent base station through background interface communication so as to instruct the adjacent base station to carry out resource scheduling, thereby reducing or eliminating the interference to the base station. In addition, the invention also provides an interference coordination method which can be used for reducing or eliminating the interference of the adjacent base station to a serving base station by utilizing the interference coordination instructions sent to the adjacent base station from the serving base station. According to the invention, the distributed inter-cell interference coordination can be realized only through small signaling interaction between the base stations, and the multi-antenna multi-base station system adopting the method provided by the invention has the advantages of low signaling cost, simplicity in realization, less time delay, flexibility, self-adaption and the like.

Description

technical field [0001] The present invention relates to the field of communication technology, and more specifically, to a downlink multi-antenna and multi-base station interference coordination method and a base station, which can reduce or eliminate the interference of neighboring base stations to the serving base station by using the interference coordination instructions sent from the serving base station to neighboring base stations. Background technique [0002] Multi-antenna (MIMO: Multiple In Multiple Out) wireless transmission technology configures multiple antennas at the transmitting end and the receiving end, utilizes space resources in wireless transmission, and obtains space multiplexing gain and space diversity gain. Information theory studies show that the capacity of MIMO systems increases linearly with the minimum number of transmit antennas and receive antennas. [0003] figure 1 A schematic diagram of a MIMO system is shown. figure 1 In , multiple anten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W88/08H04B7/04
CPCH04W72/0426H04W92/20H04W72/082H04W16/28H04W88/08H04L1/00H04L1/06H04W72/27H04W72/541
Inventor 丁铭刘仁茂梁永明张应余杨曾
Owner SHARP KK
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