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An interference alignment method, related device and system

A technology of interference alignment and interference link, applied in the field of communication, can solve the problems of reducing the communication pressure between base stations, CBF can only be allocated, and channel capacity loss is relatively large.

Active Publication Date: 2016-12-21
瑞得银纺(南通)信息技术有限公司
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Problems solved by technology

[0006] It can be seen from the above that CBF technology only needs to share CSI and UE information between base stations. Compared with JT / JR, it reduces the communication pressure between base stations. However, since CBF actually divides communication resources orthogonally in space , therefore, CBF can only allocate channel capacity but not share channel capacity, which makes the loss of channel capacity obtained by CBF larger

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  • An interference alignment method, related device and system
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  • An interference alignment method, related device and system

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Embodiment Construction

[0122] Embodiments of the present invention provide an interference alignment method, a related device and a system.

[0123] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0124] First, the design idea of ​​the present invention is described. For the convenience of description, the following downlink scenario is taken as an example. It should be understood that based on the duality ...

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Abstract

The embodiment of the present invention discloses an interference alignment method, a related device and a system, wherein, in the interference alignment method of the present invention, an iterative operation is performed based on the connectivity state information reported by the UE, and finally the transmit vector and null space corresponding to each UE are generated , and send these vectors to the corresponding base stations and UEs, so that each base station (or UE) can transmit signals according to the received UE transmission vector, and each UE (or base station) can transmit signals according to the received null space The basis vector performs signal reception, thereby realizing elimination of signal interference between cells. The technical scheme provided by the invention effectively improves the channel capacity of the cell, and at the same time, avoids the increase of the communication pressure between the base stations due to the sharing of CSI between the base stations.

Description

technical field [0001] The present invention relates to the communication field, in particular to an interference alignment method, a related device and a system. Background technique [0002] At the edge of the cell, there are signals from the cell and neighboring cells at the same time. In the uplink channel, the base station will receive a signal from a user equipment (UE, User Equipment) in an adjacent cell, and in the downlink channel, the UE will receive a signal from a base station in an adjacent cell. Signals from adjacent cells will generate inter-cell interference (ACI, Adjacent Cell Interference) to the local cell, thereby seriously affecting the performance of the local cell. Especially when a heterogeneous network is introduced by the subsequent evolution of the long-term evolution (LTE-A, Long Time Evolution Advanced), the ACI is even more serious. In order to suppress ACI, the concept of Coordinated Multiple Points Transmission (CoMP, Coordinated Multiple Po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/06
Inventor 王雪松
Owner 瑞得银纺(南通)信息技术有限公司
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