Method for acquiring information channel reciprocity and controlling information interactively in frequency division duplex (FDD) heterogeneous network

Abstract

The invention discloses a method for acquiring information channel reciprocity and controlling information interactively in a frequency division duplex (FDD) heterogeneous network and belongs to the field of wireless communication. The method includes configuring different reciprocity carriers for a Macro cell and a Pico cell and utilizing a time division duplex (TDD) frame structure as the reference to configure the frame structure of a reciprocity carrier wireless frame into an up time slot, a guard interval and a down time slot. The up time slot of the reciprocity carriers bears up pilot signals (SRS) and up control information. The down time slot of the reciprocity carriers bears down control information. When the wireless frame of the reciprocity carrier of the Macro cell or the reciprocity carrier of the Pico cell is the down time slot, the reciprocity carriers are respectively polymerized with down carriers in corresponding cells respectively. When the wireless frame of the reciprocity carrier of the Macro cell or the reciprocity carrier of the Pico cell is the up time slot, the reciprocity carriers are polymerized with up carriers in the corresponding cells. By means of the method, acquired resource of information channel reciprocity of an FDD system is small in expense and is accurate simultaneously, and interaction of the up control information and the down control information in the heterogeneous network is more accurate.

Description

technical field [0001] The invention relates to a method for obtaining channel reciprocity and interactive control information suitable for FDD heterogeneous networks, which acquires channel reciprocity and interactive control information in a frequency division duplex FDD system through frame structure configuration and carrier aggregation. It belongs to the field of wireless communication. Background technique [0002] Heterogeneity will be one of the main features of the wireless network environment for a long time to come. The so-called heterogeneity refers to the differences in the structure, function, and properties of the various parts that make up the system. In the process of high-speed and widespread development of wireless communication technology, in order to meet the needs of users for various services and transmission rates in different communication environments in future mobile communications, 3GPP proposed the concept of heterogeneous networks, that is, in ...

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Problems solved by technology

[0007] Aiming at the problem that the acquisition method of channel reciprocity in the frequency division duplex FDD system has a large cost of spectrum resources and low accuracy, and the interaction of uplink and downlink control information in heterogeneous networks has low accuracy due to severe interference, this patent proposes A method for obtaining channel reciprocity and exchanging control information in an FDD heterogeneous network by using wireless frame structure configuration and carrier aggregation, which makes the acquisition resource overhead of FDD system channel reciprocity smaller and more accurate, and also enables The interaction between uplink control information and downlink control information in a heterogeneous network is more accurate

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