Communication method, device and system

Abstract

The invention provides a communication method. An access network device and a terminal respectively determine formats of at least one small time slot group according to a first subcarrier width employed by first control channels and a second subcarrier width employed by second control channels. The access network device respectively sends first indication information and second indication information to the terminal, so the terminal determines a time domain position of each small time slot group comprising the second control channels according to the first indication information, and determines the time domain positions of small time slots comprising the second control channels in each small time slot group according to the formats of the small time slot groups and the second indication information. According to the method provided by the invention, the time domain positions of the small time slots comprising the second control channels can be flexibly indicated according to the changeof the subcarrier width employed by the second control channels, and the terminal can only detect partial small time slots, so the energy consumption of detecting each small time slot by the terminalis reduced.

Description

technical field [0001] The embodiments of the present application relate to the field of communication technologies, and in particular, to a communication method, device, and system. Background technique [0002] The Long Term Evolution (LTE) system standard formulated by the 3rd Generation Partnership Project (the 3rd Generation Partnership Project, 3GPP) is considered to be the fourth generation wireless access system standard. In the existing LTE system, in the time domain, uplink and downlink transmissions are organized into 10 ms system frames (English: system frame) or called wireless frames (English: radio frame). LTE supports 2 system frame structures: Type 1 for Frequency Division Duplex (English: Frequency Division Duplex, FDD) and Type 2 for Time Division Duplex (English: Time Division Duplex, TDD). Taking FDD as an example, each A system frame is composed of 10 subframes (English: subframe). Each subframe is composed of 2 consecutive time slots (English: slot)....

AI Technical Summary

Problems solved by technology

[0006] The present application provides a communication method, which is used to solve the technical problem in the prior art that it is impossible to flexibly indicate the time domain position of the small slot including the second control channel according to the change of the subcarrier width used by the second control channel

Further, it can solve the problem of excessive energy consumption caused by the terminal detecting the control channel of each small slot

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