System and method for indicating control channel transmission format

Abstract

The invention provides a system and a method for indicating a control channel transmission format. The method comprises the following steps that: a base station presets a channel format indication (CFI) value of each sub frame under different configurations, and issues indication information for indicating the CFI value of each sub frame to a terminal in a cell according to the CFI value, which is determined according to the current extracted configuration of the cell, of each sub frame. By adopting the technical scheme, frequency domain resources of a control channel can be reduced, signaling expense is reduced, the complexity of detection for a terminal control channel is reduced and the transmission reliability is improved.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a method and device for indicating the transmission format of a control channel in an Orthogonal Frequency Diversion Multiple Access (OFDM) system. Background technique [0002] In 2G and 3G wireless communication systems, it is necessary to ensure that the control channel occupies as few resources as possible and ensure the quality of the control channel. In order to achieve a balance between the two, multiple comprehensive factors need to be considered when designing the control channel. [0003] Both the LTE (Long-Term Evolution, long-term evolution) / LTE-Advanced system and the IMT-Adbvanced (International Mobile Telecommunications, International Mobile Communications) system are based on the OFDM (Orthogonal Frequency Division Multiplexing) technology. In the OFDM system, the Time-frequency two-dimensional data form, the control channel adopts TDM (Tmie Division Mu...

AI Technical Summary

Problems solved by technology

[0010] In the prior art, a CFI is sent every subframe, that is, every 1 ms, which occupies more control channel

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