Information transmission method and apparatus, communication node, and storage medium

An information transmission method, applied by a second communication node and comprising:

• receiving channel state reporting indication information sent by a first communication node, wherein the channel state reporting indication information used to trigger the second communication node to report a channel state for N reference bandwidth parts, and N≥1;
• determining transmission slots for reference signals on the N reference bandwidth parts;
• receiving the reference signals in the transmission slots;
• measuring, based on the reference signals, the channel state of the N reference bandwidth parts;
• and
• reporting the channel state for the N reference bandwidth parts on an uplink physical channel within an active bandwidth part;
• wherein the N reference bandwidth parts are inactive bandwidth parts whose channel state the second communication node needs to report, and the determining the transmission slots for the reference signals on the reference bandwidth parts comprises:
• determining, according to a reference signal transmission delay, a slot index of the active bandwidth part, a subcarrier spacing of the reference bandwidth part, and a subcarrier spacing of the active bandwidth part, the transmission slots for the reference signals on the reference bandwidth parts;
• wherein the first communication node transmits the reference signals in the transmission slots, and the second communication node receives the reference signals in the transmission slots;
• in a case where a reference signal transmission delay on a reference bandwidth part is kΔ slots, a transmission slot index of the reference signal is determined to be
• ⌈
• μ
• ′
• μ
• ·
• k
• 0
• ⌉
• +
• k
• Δ
• ,
• wherein μ′ denotes the subcarrier spacing of the reference bandwidth part, μ denotes the subcarrier spacing of the active bandwidth part, k0 denotes a slot index on the active bandwidth part, and reference signal delay information is sent on a slot k0.

A first communication node, comprising:

• one or more processors;
• and
• a storage apparatus configured to store one or more programs;
• wherein the one or more programs, when executed by the one or more processors, enable the one or more processors to implement an information transmission method, wherein the information transmission method comprises:
• determining transmission slots for reference signals on N reference bandwidth parts, wherein N≥1;
• and
• sending channel state reporting indication information to a second communication node, wherein the channel state reporting indication information is used to trigger the second communication node to, based on the reference signals in the transmission slots, report on an uplink physical channel within an active bandwidth part a channel state for the N reference bandwidth parts;
• wherein the N reference bandwidth parts are inactive bandwidth parts whose channel state the second communication node needs to report;
• wherein the determining the transmission slots for the reference signals on the N reference bandwidth parts comprises:
• determining, according to a reference signal transmission delay, a slot index of an active bandwidth part, a subcarrier spacing of the reference bandwidth part, and a subcarrier spacing of the active bandwidth part, the transmission slots for the reference signals on the reference bandwidth parts;
• wherein the first communication node transmits the reference signals in the transmission slots;
• in a case where a reference signal transmission delay on a reference bandwidth part is kΔ slots, a transmission slot index of the reference signal on the reference bandwidth part is equal to
• ⌈
• μ
• ′
• μ
• ·
• k
• 0
• ⌉
• +
• k
• Δ
• ,
• wherein μ′ denotes the subcarrier spacing of the reference bandwidth part, μ denotes the subcarrier spacing of the active bandwidth part, and k0 denotes a slot index on the active bandwidth part, and reference signal delay information is sent on a slot k0.