An information transmission method, applied to a second communications device, comprising: obtaining second information; and performing a port related operation according to the second information; wherein the second information comprises at least one of following: related information of a time-sensitive network translator, TT, in which the first port is located, delay related information of the first port, and the first port is a port of the TT, the TT is a network-side time sensitive network translator, NW-TT or a device-side time sensitive network translator, DS-TT, and the TT, a terminal, and a wireless communication network constitute a bridge; characterized in that the related information of the TT includes: a type of the TT; the delay related information of the first port includes at least one of following: a packet delay budget, PDB, and a processing time between a terminal and a DS-TT; the port related operation includes at least one of following: constructing a port pair according to the type of the TT; and determining a delay of the second-type port pair or a delay of the third-type port pair according to the delay related information of the first port; wherein the second-type port pair is a port pair formed by a first DS-TT port and a second DS-TT port; and the third-type port pair is a port pair formed by a first NW-TT port and a second NW-TT port; the delay of the second-type port pair is a processing delay between the first DS-TT port and a first terminal + a first PDB + a processing delay between the second DS-TT port and a second terminal + a second PDB; and the delay of the third-type port pair is a transmission delay between the first NW-TT port and the second NW-TT port; wherein the second communications device includes a terminal, a TT, a CN network element, and a RAN network element. obtaining second information; and performing a port related operation according to the second information; wherein the second information comprises at least one of following: related information of a time-sensitive network translator, TT, in which the first port is located, delay related information of the first port, and the first port is a port of the TT, the TT is a network-side time sensitive network translator, NW-TT or a device-side time sensitive network translator, DS-TT, and the TT, a terminal, and a wireless communication network constitute a bridge; characterized in that the related information of the TT includes: a type of the TT; the delay related information of the first port includes at least one of following: a packet delay budget, PDB, and a processing time between a terminal and a DS-TT; the port related operation includes at least one of following: constructing a port pair according to the type of the TT; and determining a delay of the second-type port pair or a delay of the third-type port pair according to the delay related information of the first port; wherein the second-type port pair is a port pair formed by a first DS-TT port and a second DS-TT port; and the third-type port pair is a port pair formed by a first NW-TT port and a second NW-TT port; the delay of the second-type port pair is a processing delay between the first DS-TT port and a first terminal + a first PDB + a processing delay between the second DS-TT port and a second terminal + a second PDB; and the delay of the third-type port pair is a transmission delay between the first NW-TT port and the second NW-TT port; wherein the second communications device includes a terminal, a TT, a CN network element, and a RAN network element. constructing a port pair according to the type of the TT; and determining a delay of the second-type port pair or a delay of the third-type port pair according to the delay related information of the first port; wherein the second-type port pair is a port pair formed by a first DS-TT port and a second DS-TT port; and the third-type port pair is a port pair formed by a first NW-TT port and a second NW-TT port; the delay of the second-type port pair is a processing delay between the first DS-TT port and a first terminal + a first PDB + a processing delay between the second DS-TT port and a second terminal + a second PDB; and the delay of the third-type port pair is a transmission delay between the first NW-TT port and the second NW-TT port; wherein the second communications device includes a terminal, a TT, a CN network element, and a RAN network element.