Device-to-device identification conflict solution method and device-to-device user equipment

A Device-to-Device (D2D) User Equipment (UE), comprising a processor;

• and one or more modules stored on a memory and executable by the processor, wherein the one or more modules comprises:
• a first judgment unit, arranged to judge whether a terminal Identifier (ID) of a first D2D UE conflicts with a terminal ID or a D2D group ID of another D2D UE;
• a first allocation unit, arranged to, when the terminal ID of the first D2D UE conflicts with the terminal ID or the D2D group ID of the another D2D UE, reallocate a terminal ID to the first D2D UE;
• and
• a first sending unit, arranged to send the reallocated terminal ID of the first D2D UE to a second D2D UE, wherein the second D2D UE is a D2D UE in proximity to the D2D UE or is a D2D UE which has established a PC5 connection with the D2D UE;
• wherein the first judgment unit is further arraged to:
• upon reception of ID conflict indication information sent from a third D2D UE, determine that the terminal ID of the D2D UE conflicts with the terminal ID or the D2D group ID of the another D2D UE, wherein the ID conflict indication information is arranged to indicate that the terminal ID of the D2D UE conflicts with the terminal ID or the D2D group ID of the another D2D UE.

A Device-to-Device (D2D) User Equipment (UE), comprising a processor;

• and a memory for storing instructions executable by the processor, wherein the processor is arranged to:
• judge whether a terminal Identifier (ID) of a first D2D UE conflicts with a terminal ID or D2D group ID of another D2D UE;
• when the terminal ID of the first D2D UE conflicts with the terminal ID or the D2D group ID of the another D2D UE, send ID conflict indication information to a second D2D UE, thereby causing the second D2D UE to reallocate a terminal ID to the first D2D UE;
• and
• receive the terminal ID sent from the second D2D UE and reallocated to the first D2D UE;
• wherein the processor is further arraged to:
• upon reception of ID conflict indication information sent from a third D2D UE, determine that the terminal ID of the first D2D UE conflicts with the terminal ID or the D2D group ID of the another D2D UE, wherein the ID conflict indication information is arranged to indicate that the terminal ID of the first D2D UE conflicts with the terminal ID or the D2D group ID of the another D2D UE.