Random access method and terminal device, and network device

A network device, comprising:

• a processor and a transceiver, wherein
• the processor is configured to detect first information on a group of first pre-configured resources and detect second information on a group of second pre-configured resources;
• and
• the transceiver is configured to send third information on a group of third re-configured resources in a first window, wherein a start position of the first window comprises:
• a position after a first time interval after a terminal device sends the second information;
• or
• a first time unit after the first time interval after the terminal device sends the second information;
• or
• a first time unit with the third pre-configured resource existing after the first time interval after the terminal device sends the second information;
• and
• the transceiver is further configured to send fourth information on a fourth resource.

A method for random access, comprising:

• sending, by a terminal device, first information on a first resource and sending second information on a second resource;
• detecting, by the terminal device, third information on a group of third pre-configured resources in a first window;
• wherein a start position of the first window comprises:
• a position after a first time interval after the terminal device sends the second information;
• or
• a first time unit after the first time interval after the terminal device sends the second information;
• or
• a first time unit with the third pre-configured resource existing after the first time interval after the terminal device sends the second information;
• and
• receiving, by the terminal device, fourth information on a fourth resource.