Information transmission method, terminal and base station
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An information transmission and terminal technology, applied in the field of communication applications, which can solve the problems of ambiguity and inability to determine the number of CRC bits.
Inactive Publication Date: 2020-02-04
DATANG MOBILE COMM EQUIP CO LTD
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[0006] The purpose of the present invention is to provide an information transmission method, terminal and base station to solve the problem that when the number of UCI bits is greater than or equal t
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Embodiment 1
[0252] Assuming that UCI needs to be transmitted on a PUCCH at time n, the resources of the PUCCH include at least the code rate r and the number of RBs PUCCH symbol length and other parameters; assuming that the PUCCH is format 3, the symbol length is 14 symbols, which carries the number of symbols transmitted by UCI Use QPSK modulation, that is, the corresponding modulation order Q m =2, the number of REs carrying UCI on each RB The number of bits of UCI satisfies a predetermined range of bits, for example, a value greater than or equal to 360 and less than 1013; or a value greater than or equal to 360, then:
[0253] Case 1 (use reference CRC directly): Suppose r=0.5, assuming UCI bit number O UCI It is 400 bits. Before determining the size of the PUCCH resource, it is impossible to determine whether the number of encoded bits of UCI exceeds 1088 bits, so it is impossible to determine whether UCI needs to be divided, and it is impossible to determine whether the 400-...
Embodiment 2
[0267] Assuming that HARQ-ACK needs to be transmitted on a PUSCH at time n, assuming that the number of bits of HARQ-ACK satisfies a predetermined range of bits, for example, a value greater than or equal to 360 and less than 1013, or a value greater than or equal to 360, then:
[0268] First, calculate the number of mapped resource elements (RE, Resource Element) or the number Q' of modulation symbols corresponding to HARQ-ACK on PUSCH according to the following formulas (2) and (3) ACK , where O ACK is the number of bits of HARQ-ACK, L ACK for the reference CRC bits, Parameters for determining resources for configured HARQ-ACK, C UL-SCH is the number of code blocks (CB, code block) carrying data (UL-SCH) on PUSCH, K r is the size of the rth CB, is the scheduling bandwidth of PUSCH, in units of subcarrier (SC, subcarrier) size, is the number of REs used to transmit UCI contained on the OFDM symbol l, is the number of symbols included in PUSCH, α is the scaling facto...
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Abstract
The invention provides an information transmission method, a terminal and a base station, and solves the problems that when the bit number of UCI is greater than or equal to 360 bits and whether UCI segmentation is carried out cannot be determined, the actual CRC bit number cannot be determined, and then how to carry out UCI transmission is not clear. The information transmission method comprisesthe following steps: judging whether the bit number of uplink control information (UCI) meets a preset bit number range or not; when the bit number of the UCI meets the preset bit number range, determining a resource for transmitting the UCI according to a reference CRC bit number; and sending the UCI on the determined resource for transmitting the UCI. According to the method and the device, theproblem that the CRC bit number is difficult to determine when the PUCCH resource for transmitting the UCI is determined according to the CRC bit number is solved, the consistency of understanding ofthe UCI transmission resources by the base station and the terminal can be ensured, and the correct transmission of the UCI is ensured.
Description
technical field [0001] The present invention relates to the technical field of communication applications, in particular to an information transmission method, a terminal and a base station. Background technique [0002] With the development and change of mobile communication service requirements, many organizations such as the ITU have begun to study new wireless communication systems (ie, 5G NR, 5Generation New RAT) for future mobile communication systems. In the 5G NR system, for uplink control information (UCI, Uplink Control Information), when the number of UCI bits exceeds 11 bits, the polarized Polar coding method is used. The Polar encoder needs to add Cyclic Redundancy Check (CRC, Cyclic Redundancy Check) bits to the UCI. Wherein, for a UCI of 12 to 19 bits, the CRC bits of the polar encoding are 6 bits; for the case where the number of UCI bits is greater than 19 bits, the CRC bits of the polar encoding are 11 bits. In particular, for the case where the number of...
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