Information transmission method and apparatus
Embodiments of this application disclose an information transmission method and an apparatus therefor. The method includes: A terminal device sends uplink control information UCI to a network device through an uplink data channel. The uplink data channel carries N data blocks. The N data blocks include a first data block and a second data block. N is a positive integer greater than or equal to 2. The first data block is modulated based on a first modulation and coding scheme MCS, and the second data block is modulated based on a second MCS. Implementation of embodiments of this application helps ensure reliability of downlink data transmission.
1 . An information transmission method, comprising:
determining uplink control information (UCI); and
sending the UCI to a network device through an uplink data channel, wherein the uplink data channel carries N data blocks, the N data blocks comprise a first data block and a second data block, N is a positive integer greater than or equal to 2, the first data block is modulated based on a first modulation and coding scheme (MCS), and the second data block is modulated based on a second MCS, wherein
the method further comprises determining a smaller value between a value P and a value Q as a quantity of resource elements that are on the uplink data channel and that are for transmitting the UCI,
the value P is a quantity of resource elements occupied by the UCI, the value Q is an upper limit of the quantity of resource elements that are on the uplink data channel and that are for transmitting the UCI, and the values P and Q are respectively integers greater than or equal to 1, and
either
the value P is determined based on a quantity of bits corresponding to at least one data block in the N data blocks, or
the value P is determined based on a modulation scheme or a code rate corresponding to an n 2 th data block in the N data blocks, where 1≤n 2 ≤N, and n 2 is a positive integer.
2 . The method according to claim 1 , wherein time-frequency resources occupied by any two data blocks in the N data blocks partially overlap each other or do not overlap each other at all.
3 . The method according to claim 1 , wherein the UCI does not comprise channel state information (CSI).
4 . The method according to claim 1 , wherein a quantity of bits occupied by the UCI is less than A*B, where A≥0, B is a quantity of bits corresponding to m 1 data blocks in the N data blocks, 1≤m 1 ≤N, and m 1 is a positive integer, wherein
the m 1 data blocks are determined based on a quantity of bits corresponding to at least one data block in the N data blocks; or
the m 1 data blocks are determined based on a priority of at least one data block in the N data blocks.
5 . The method according to claim 1 , wherein spectral efficiency of the UCI is higher than spectral efficiency of an n 1 th data block in the N data blocks, where 1≤n 1 ≤N, and n 1 is a positive integer, wherein
the n 1 th data block is determined based on spectral efficiency of at least one data block in the N data blocks; or
the n 1 th data block is determined based on an MCS corresponding to at least one data block in the N data blocks; or
the n 1 th data block is determined based on a priority of at least one data block in the N data blocks and a priority of the UCI; or
the n 1 th data block is determined based on a quantity of bits corresponding to at least one data block in the N data blocks.
6 . The method according to claim 1 , wherein
a priority of the UCI is the same as a priority of the uplink data channel; or
a priority of the UCI is the same as a priority of at least one data block in the N data blocks.
7 . The method according to claim 1 , wherein a time-frequency resource occupied by the UCI is comprised in a time-frequency resource corresponding to m 3 data blocks in the N data blocks, where 1≤m 3 ≤N, and m 3 is a positive integer, wherein
the m 3 data blocks are determined based on a priority of at least one data block in the N data blocks; or
the m 3 data blocks are determined based on a priority of at least one data block in the N data blocks and a priority of the UCI; or
the m 3 data blocks are determined based on a reliability-related parameter corresponding to at least one data block in the N data blocks; or
the m 3 data blocks are determined based on spectral efficiency of at least one data block in the N data blocks; or
the m 3 data blocks are determined based on an MCS corresponding to at least one data block in the N data blocks; or
the m 3 data blocks are determined based on a latency-related parameter corresponding to at least one data block in the N data blocks.
8 . The method according to claim 1 , wherein a quantity of bits occupied by the UCI is less than A*B, where A≥0, B is a quantity of bits corresponding to m 1 data blocks in the N data blocks, 1≤m 1 ≤N, and m 1 is a positive integer, wherein
the m 1 data blocks are determined based on a priority of at least one data block in the N data blocks.
9 . The method according to claim 1 , wherein a time-frequency resource occupied by the UCI is comprised in a time-frequency resource corresponding to m 3 data blocks in the N data blocks, where 1≤m 3 <N, and m 3 is a positive integer, wherein
the m 3 data blocks are determined based on a priority of at least one data block in the N data blocks; or
the m 3 data blocks are determined based on a priority of at least one data block in the N data blocks and a priority of the UCI; or
the m 3 data blocks are determined based on a reliability-related parameter corresponding to at least one data block in the N data blocks; or
the m 3 data blocks are determined based on an MCS corresponding to at least one data block in the N data blocks; or
the m 3 data blocks are determined based on a latency-related parameter corresponding to at least one data block in the N data blocks.
10 . A communication apparatus, comprising:
at least one memory; and
at least one processor configured to execute program instructions stored in the at least one memory to enable the apparatus to perform operations comprising:
determining uplink control information (UCI); and
sending the UCI to a network device through an uplink data channel, wherein the uplink data channel carries N data blocks, the N data blocks comprise a first data block and a second data block, N is a positive integer greater than or equal to 2, the first data block is modulated based on a first modulation and coding scheme (MCS), and the second data block is modulated based on a second MCS,
wherein spectral efficiency of the UCI is higher than spectral efficiency of an n 1 th data block in the N data blocks, where 1≤n 1 ≤N, and n 1 is a positive integer, wherein
the n 1 th data block is determined based on spectral efficiency of at least one data block in the N data blocks; or
the n 1 th data block is determined based on an MCS corresponding to at least one data block in the N data blocks; or
the n 1 th data block is determined based on a priority of at least one data block in the N data blocks and a priority of the UCI; or
the n 1 th data block is determined based on a quantity of bits corresponding to at least one data block in the N data blocks.
11 . The communication apparatus according to claim 10 , wherein time-frequency resources occupied by any two data blocks in the N data blocks partially overlap each other or do not overlap each other at all.
12 . The communication apparatus according to claim 10 , wherein the UCI does not comprise channel state information (CSI).
13 . The communication apparatus according to claim 10 , wherein a quantity of bits occupied by the UCI is less than A*B, where A≥0, B is a quantity of bits corresponding to m 1 data blocks in the N data blocks, 1≤m 1 ≤N, and m 1 is a positive integer, wherein
the m 1 data blocks are determined based on a quantity of bits corresponding to at least one data block in the N data blocks; or
the m 1 data blocks are determined based on a priority of at least one data block in the N data blocks.
14 . The communication apparatus according to claim 10 , wherein
a priority of the UCI is the same as a priority of the uplink data channel; or
a priority of the UCI is the same as a priority of at least one data block in the N data blocks.
15 . The communication apparatus according to claim 10 , wherein the operations further comprise:
determining a smaller value between a value P and a value Q as a quantity of resource elements that are on the uplink data channel and that are for transmitting the UCI, wherein
the value P is a quantity of resource elements occupied by the UCI, and the value Q is an upper limit of the quantity of resource elements that are on the uplink data channel and that are for transmitting the UCI, wherein P and Q are respectively integers greater than or equal to 1.
16 . The communication apparatus according to claim 15 , wherein
the value P is determined based on a quantity of bits corresponding to at least one data block in the N data blocks, or
the value P is determined based on a modulation scheme or a code rate corresponding to an n 2 th data block in the N data blocks, where 1≤n 2 ≤N, and n 2 is a positive integer.
17 . The communication apparatus according to claim 10 , wherein a quantity of bits occupied by the UCI is less than A*B, where A≥0, B is a quantity of bits corresponding to m 1 data blocks in the N data blocks, 1≤m 1 ≤N, and m 1 is a positive integer, wherein
the m 1 data blocks are determined based on a priority of at least one data block in the N data blocks.
18 . The communication apparatus according to claim 10 , wherein a time-frequency resource occupied by the UCI is comprised in a time-frequency resource corresponding to m 3 data blocks in the N data blocks, where 1≤m 3 ≤N, and m 3 is a positive integer, wherein
the m 3 data blocks are determined based on a priority of at least one data block in the N data blocks; or
the m 3 data blocks are determined based on a priority of at least one data block in the N data blocks and a priority of the UCI; or
the m 3 data blocks are determined based on a reliability-related parameter corresponding to at least one data block in the N data blocks; or
the m 3 data blocks are determined based on an MCS corresponding to at least one data block in the N data blocks; or
the m 3 data blocks are determined based on a latency-related parameter corresponding to at least one data block in the N data blocks.
19 . A communication apparatus, comprising:
at least one memory; and
at least one processor configured to execute program instructions stored in the at least one memory to enable the apparatus to perform operations comprising:
receiving an uplink data channel from a terminal device, wherein the uplink data channel carries N data blocks, the N data blocks comprise a first data block and a second data block, N is a positive integer greater than or equal to 2, the first data block is modulated based on a first modulation and coding scheme (MCS), and the second data block is modulated based on a second MCS; and
obtaining uplink control information (UCI) from the uplink data channel,
wherein the operations further comprise:
determining, based on a reliability-related parameter corresponding to or a priority of an n 3 th data block, a first parameter corresponding to the n 3 th data block, wherein the first parameter is for determining a value Q to be less than a sum of quantities of resource elements occupied by the N data blocks, the value Q is an upper limit of a quantity of resource elements that are on the uplink data channel and that are for transmitting the UCI, and Q is an integer greater than or equal to 1.
20 . The communication apparatus according to claim 19 , wherein the operations further comprise:
sending indication information to the terminal device, wherein the indication information indicates m 3 data blocks in the N data blocks, 1≤m 3 ≤N, m 3 is a positive integer, and a time-frequency resource occupied by the UCI is comprised in a time-frequency resource corresponding to the m 3 data blocks.