Control information transmission method, base station and user equipment

Abstract

The invention discloses a control information transmission method, a base station and user equipment. The control information transmission method includes: determining a first group of at least one piece of the user equipment; transmitting an RRC (radio resource control) message, including a group identifier of the first group and locations of the user equipment in the first group, to the pieces of user equipment in the first group; and when control information of at least one scheduled piece of user equipment in the first group in a current sub-frame forms a PDCCH (physical downlink control channel) signal, allowing a PDCCH to transmit the PDCCH signal to the at least one piece of user equipment. The base station comprises a determining module, a transmitter module and a forming module. The user equipment includes a receiver module and an acquisition module. The control information transmission method, the base station and the user equipment use one PDCCH signal to carry the control information of at least one piece of the UE (user equipment), capacity of the PDCCH can be expanded, and system scheduling efficiency and flexibility are increased.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for transmitting control information in the communication field, a base station and user equipment. Background technique [0002] In the Long Term Evolution (referred to as "LTE") system, the minimum time unit for the scheduling of the evolved base station (evolved NodeB, referred to as "eNB") is a subframe. In a subframe, the evolved base station uses a physical downlink A control channel (Physical Downlink Control Channel, "PDCCH" for short) carries control information for scheduling user equipment (User Equipment, "UE" for short). The control information includes physical channel resources allocated to the UE, modulation and coding scheme (Modulation and Codec Scheme, “MCS” for short) information used specifically, and the like. After receiving the control signaling transmitted through the PDCCH, the UE parses the relevant control information carried in the signalin...

AI Technical Summary

Problems solved by technology

Specifically, the data packets of each UE need corresponding PDCCH scheduling. If there are a large number of UEs and the data packets transmitted by each UE are relatively small, the PDCCH area will be saturated and the data channel area will still be vacant.

However, if the PDCCH area is expanded, the overhead of the PDCCH will be large, and the system scheduling efficiency will decrease.

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