Method for transmitting control channel, network equipment, network controller and terminal equipment

Abstract

The invention provides a method for transmitting a control channel, network equipment, a network controller and terminal equipment, being capable of avoiding a resource conflict between PDCCHs of multiple pieces of network equipment. The method comprises the steps as follows: the first network equipment receives resource group indication information sent by the network controller, wherein resources indicated by the resource group indication information are not overlapped with resources used by the other network equipment; the first network equipment determines a first search space according tothe private search space of user equipment and the resource group indication information; and the first network sends a first physical downlink control channel (PDCCH) to the terminal equipment via the first search space.

Description

technical field [0001] The present application relates to the communication field, and more particularly, to a method for transmitting a control channel, a network device, a network controller and a terminal device. Background technique [0002] Coordinated multiple point (coordination multiple point, CoMP) transmission is a method proposed in Long Term Evolution (Long Term Evolution, LTE) for solving inter-cell interference problems and improving cell edge user throughput. In the new generation of radio access technology (new radio access technology, NR), multiple network devices can provide services for the same terminal device at the same time, and perform independent scheduling, and each network device can independently send physical downlink data to the same terminal device. Control channel (physical downlink control channel, PDCCH). In this case, the terminal device needs to blindly detect multiple PDCCHs to obtain multiple downlink control information (downlink contr...

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Problems solved by technology

[0003] However, the resources of the user equipment (UE-specific) search space of each terminal device are limited, and when multiple network devices transmit multiple PDCCHs to the same terminal device at the same time, it is very likely that the resource Collision, that is, at least two network devices send their respective PDCCHs on the same time-frequency resources, resulting in DCI not being correctly received, affecting data transmission between network devices and terminal devices, that is, affecting the reliability of transmission sex

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