Method and equipment for determining number of channel control blocks

Abstract

The invention relates to a wireless communication technology, particularly to a method and equipment for determining the number of CCE (Channel Control Equipment), which not only can be used for determining the number of the CCE, but also has cell capacity and PDCCH demodulation performance, so that the selected number of the CCE is relatively reasonable, thereby reducing the influence on the capacity of cells and the transmission quality of the PDCCH. The method of the embodiment of the invention comprises the following steps of: determining the maximum number of bits carried by each selectable PDCCH in a wireless frame according to CQI information; determining the quality parameter of each PDCCH according to the determined maximum number of bits carried by each PDCCH and the data size of the control signaling needing to be transmitted currently; and comparing the maximum quality parameter in the determined quality parameters of all PDCCHs with the threshold value, selecting a PDCCH from all selectable PDCCHs in the wireless frame according to the comparative result, and determining the number of control channel blocks corresponding to the selected PDCCH.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a method and equipment for determining the number of CCE (Control ChannelElement, channel control block). Background technique [0002] In an LTE (Long Term Evolution, long-term evolution) system, a base station transmits uplink scheduling signaling, downlink scheduling signaling, and power control signaling through a PDCCH (physical downlink control channel, physical downlink control channel). System throughput is very important, and the required bit error rate is much lower than that of PDSCH (Physical Downlink Shared Channel) channel. [0003] When a terminal (UE) receives signaling through the PDCCH, it cannot know the actual physical resource location of the PDCCH in advance, and only through blind detection, it can receive signaling through the PDCCH after detecting the PDCCH. [0004] This blind detection method increases the complexity of the UE and affects th...

AI Technical Summary

Problems solved by technology

If too many CCEs are selected, the coding gain brought by information redundancy will be large, but the capacity of the entire cell will be reduced; if the number of CCEs selected is too small, although the capacity of the cell will increase, the coding gain brought by information redundancy will Gain is small

[0007] To sum up, when determining the number of CCEs, the number of CCEs selected by the network side is unreasonable because the cell capacity and PDCCH demodulation performance cannot be taken into account, which seriously affects the capacity of the cell and the transmission quality of PDCCH.

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