Method and device for measuring channel state information

Abstract

The present invention provides a method and device for measuring channel state information, wherein the method includes: a first device receiving a first signal sent by a second device through a downlink channel, and receiving a first signal sent by at least one third device through an uplink channel Two signals: the first device determines channel state information CSI according to the first signal and the second signal. The foregoing method can realize that the network device schedules uplink resources and downlink resources according to the channel state information determined by the first device, so as to improve resource utilization.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a method and device for measuring channel state information. Background technique [0002] In the prior art, user equipment (User Equipment, referred to as UE) and network equipment, such as a base station, transmit wirelessly. The UE sends a wireless signal to the network equipment called uplink transmission, and the network equipment sends a wireless signal to the UE. for downlink transmission. [0003] In a Long Term Evolution (LTE for short) system, uplink resources and downlink resources are independent, and network devices uniformly schedule uplink resources and downlink resources. For example, for the uplink channel, the UE sends a Sounding Reference Signal (Sounding Reference Signal, SRS for short) to the network device according to the indication information of the network device, and then the network device obtains the channel state information of...

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Problems solved by technology

[0006] However, the above-mentioned UE or network equipment can only measure the channel state information of the one-way channel, that is, the uplink channel or the downlink channel

In practical applications, the uplink signals of multiple cells or the downlink signals of multiple cells may be transmitted on the same resource, and there is mutual interference between the uplink signals of multiple cells or the downlink signals of multiple cells. Therefore, the above-mentioned network equipment cannot know the channel state information when the uplink signals between adjacent cells or the downlink signals between adjacent cells cause mutual interference to the cells served by the above-mentioned network equipment

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