Method, terminal device and network device for non-terrestrial network satellite handover

A method for non-terrestrial network satellite handover, comprising:

• receiving, at a first satellite network, first information from a terminal device, wherein the first information comprises a plurality of first measurement results of reference signals of a plurality of beams of a second satellite network, wherein the second satellite network is different from the first satellite network;
• sending the first information to the second satellite network;
• and
• sending, from the first satellite network, a first handover command to the terminal device, wherein the first handover command indicates the terminal device to perform a random access channel-less (RACH-less) satellite handover from a coverage area of the first satellite network to a coverage area of the second satellite network, wherein the first handover command comprises information of a first beam that includes a beam index of at least one beam of the second satellite network, wherein the first beam relates to one or more pre-configured resources for the RACH-less satellite handover.

A method for non-terrestrial network satellite handover, comprising:

• receiving, at a second satellite network, first information from a first satellite network, wherein the second satellite network is different from the first satellite network;
• determining, by the second satellite network, a first beam corresponding to a terminal device, and the first beam includes at least one beam;
• and
• sending information of the first beam to the first satellite network, wherein the first beam includes at least one beam, and the information of the first beam comprises a beam index of the at least one beam of the second satellite network, and wherein the first beam relates to one or more pre-configured resources for a RACH-less satellite handover.