Channel state information receiving method, channel state information feedback method, device, base station and terminal

1. A channel state information receiving method, comprising:

in aperiodic CSI feedback, obtaining group identifiers of groups into which a plurality of terminals having accessed to a base station is classified, wherein one of the group identifiers is assigned by the base station to one terminal when the one terminal accesses to the base station;

transmitting a triggering signaling to one group of terminals having an identical group identifier, wherein the triggering signaling comprises a pre-configured resource block configured by the base station for the group of terminals having the identical group identifier; and

receiving, on the pre-configured resource block, pieces of channel state information respectively fed back by only the group of terminals having the identical group identifier based on the triggering signaling;

assigning one group identifier for each terminal accessing to the base station using a formula: group identifier=M Mod N1, where M is a total quantity of terminals having accessed to the base station recorded by the base station at a time instant when each terminal accesses to the base station, N1 is a total quantity of groups configured by the base station for the plurality of terminals having accessed to the base station, and Mod refers to a remainder calculation;

wherein the transmitting the triggering signaling to one group of terminals having the identical group identifier comprises: transmitting the triggering signaling carrying the group identifier to all terminals in the group corresponding to the group identifier;

wherein the transmitting the triggering signaling carrying the group identifier to all terminals in the group corresponding to the group identifier comprises:

scrambling the triggering signaling carrying the group identifier using a predetermined scramble code to generate a scrambled triggering signaling, wherein the predetermined scramble code is obtained based on the group identifier; and

transmitting the scrambled triggering signaling to all terminals in the group corresponding to the group identifier.

2. The channel state information receiving method according to claim 1 , wherein the triggering signaling further comprises a size of the pre-configured resource block, location information of the pre-configured resource block in a resource set configured by the base station, and triggering state information used to trigger the terminals to feed back channel state information.

3. The channel state information receiving method according to claim 1 , wherein the receiving, on the pre-configured resource block, the pieces of channel state information respectively fed back by only the group of terminals having the identical group identifier based on the triggering signaling further comprises:

receiving, on the pre-configured resource block, the pieces of channel state information reported by only the group of terminals having the identical group identifier based on the triggering signaling and a preset multiplexing rule, wherein the preset multiplexing rule comprises time division multiplexing, frequency division multiplexing, code division multiplexing and time-frequency-code multiplexing.

4. The channel state information receiving method according to claim 1 , wherein after the receiving, on the pre-configured resource block, the pieces of channel state information respectively fed back by the group of terminals having the identical group identifier based on the triggering signaling, the channel state information receiving method further comprises:

analyzing the pieces of channel state information received on an identical pre-configured resource block.

5. A channel state information receiving device, comprising:

a processor and a memory connected to the processor via a bus interface, the memory being configured to store program and data used by the processor when the processor executes operations;

wherein when calling the data and executing the program stored in the memory, the processor implements the following functional modules:

a first obtaining module, configured to, in aperiodic CSI feedback, obtain group identifiers of groups into which a plurality of terminals having accessed to a base station is classified, wherein one of the group identifiers is assigned by the base station to one terminal when the one terminal accesses to the base station;

a transmitting module, configured to transmit a triggering signaling to one group of terminals having an identical group identifier, wherein the triggering signaling comprises a pre-configured resource block configured by the base station for the group of terminals having the identical group identifier; and

a first receiving module, configured to receive, on the pre-configured resource block, pieces of channel state information respectively fed back by only the group of terminals having the identical group identifier based on the triggering signaling;

assigning one group identifier for each terminal accessing to the base station using a formula: group identifier=M Mod N1, where M is a total quantity of terminals having accessed to the base station recorded by the base station at a time instant when each terminal accesses to the base station, N1 is a total quantity of groups configured by the base station for the plurality of terminals having accessed to the base station, and Mod refers to a remainder calculation;

wherein the transmitting module is configured to transmit the triggering signaling carrying the group identifier to all terminals in the group corresponding to the group identifier;

wherein the transmitting module comprises:

a scrambling unit, configured to scramble the triggering signaling carrying the group identifier using a predetermined scramble code to generate a scrambled triggering signaling, wherein the predetermined scramble code is obtained based on the group identifier; and

a transmitting unit, configured to transmit the scrambled triggering signaling to all terminals in the group corresponding to the group identifier.