Method for transmitting ascending control information and method for calculating transmission parameter

Abstract

The invention provides a method for transferring uplink control information. The method comprises the steps as follows: when uplink shared channel data and the uplink control information are required to be transferred in an uplink shared channel PUSCH of a subframe i simultaneously, a user terminal obtains the transmission power P<PUSCH> (init) of primarily transferred uplink shared channel data and the transmission power P<PUSCH> (i) of the uplink shared channel data transferred in the subframe i; the user terminal confirms the symbol quantity of the uplink control information after being coded in the subframe i according to the comparison relation between P<PUSCH> (init) and P<PUSCH> (i) and the size and the bandwidth of a transmission block when the uplink shared channel data is transferred primarily; the user terminal codes the uplink control information according to the symbol quantity of the uplink control information after being coded and transfers the coded uplink control information to a base station in the PUSCH of the subframe i.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for transmitting uplink control information and a method for calculating transmission parameters. Background technique [0002] In the LTE (Long Term Evolution, long-term evolution) system, the uplink physical channel mainly consists of channels such as PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel), PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel), and PUCCH is used for Transmit uplink control information. Wherein, the uplink control information includes ACK (Acknowledge, correct response) / NACK (Non-Acknowledge, wrong response) of uplink feedback, CQI (Channel Quality Indicator, channel quality indication), RI (Rank Indicator, rank indication information), PMI ( Precoding Matrix Indicator, precoding matrix indication) and other information. The PUSCH may transmit only uplink shared channel (Uplink Shared channel, UL-SCH...

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Problems solved by technology

[0040] When the retransmitted uplink shared channel data and uplink control information are transmitted in the PUSCH of subframe i at the same time, the number of symbols after encoding the uplink control information is determined by the transport block size and bandwidth of the initial transmission of the uplink shared channel data (in subcarriers It is determined by information such as the unit) and other information; and from the above power control formula (that is, formula 1), it can be known that the transmit power of PUSCH is determined by the bandwidth of transmitting the uplink shared channel data in subframe i, which makes the PUSCH in subframe i The transmission power does not match the coding performance of the uplink control information transmitted in the PUSCH, which may cause the transmission performance of the uplink control information to be unable to be guaranteed, which in turn causes the overall performance of the system to decline

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