Method for transmitting and receiving data and communication device

Abstract

The invention provides a method for transmitting and receiving data and a communication device. The method is applied to a plurality of network devices, such as a first network device and a second network device, so as to cooperatively transmit data to a terminal device. The method comprises the following steps: in a pre-allocation stage, the plurality of network devices pre-allocate beams or beamsets for the terminal device, i.e., pre-allocate airspace resources; in the real scheduling stage, the plurality of network devices send data to the terminal device through cooperation of the pre-allocated beams or beam sets. According to the application, the airspace resources are pre-allocated in the pre-allocation stage, the scheduling complexity can be simplified, and two modules, namely thenetwork equipment pre-allocation module and the network equipment independent scheduling module, are relatively independent by utilizing the characteristic that the airspace of the terminal equipmentis slowly changed, so the transmission delay and the processing delay are reduced, and the transmission performance is improved.

Description

technical field [0001] The present application relates to the field of wireless communication, and more particularly, to methods and communication devices for transmitting and receiving data. Background technique [0002] Coordinated multipoint (coordination multiple point, CoMP) transmission is a method for solving inter-cell interference problems and improving cell-edge user throughput. In downlink coordinated multi-point transmission, multiple network devices, such as multiple cells, jointly send data to terminal devices, transform inter-cell interference into useful signals, and improve edge user security. [0003] At present, in downlink coordinated multi-point transmission, the scheduling mode of downlink coordinated joint transmission is generally centralized scheduling, that is, a centralized node collects and manages information of multiple cells and performs joint resource allocation. In some scenarios, for example, in a massive multiple-input multiple-output (Mas...

AI Technical Summary

Problems solved by technology

In some scenarios, for example, in massive multiple-input multiple-output (Massive MIMO) scenarios, centralized scheduling is applied, and the computational complexity will be very high

Images