Method for node used for wireless communication and apparatus

A method, comprising:

• transmitting a first signaling on a control link, wherein the first signaling comprises one or more first type beam indexes, the one or more first type beam indexes respectively correspond to one or more first type beams;
• transmitting one or more first type synchronization signal blocks on a backhaul link by using the one or more first type beams, wherein each first type synchronization signal block in the one or more first type synchronization signal blocks comprises first information;
• and an index of each first type synchronization signal block in the one or more first type synchronization signal blocks is one of a plurality of candidate synchronization signal block indexes;
• and
• receiving one or more second type synchronization signal blocks on an access link, wherein each second type synchronization signal block in the one or more second type synchronization signal blocks comprises the first information;
• and an index of each second type synchronization signal block in the one or more second type synchronization signal blocks is one of the plurality of candidate synchronization signal block indexes, and at least one second type synchronization signal block in the one or more second type synchronization signal blocks is different from any first type synchronization signal block in the one or more first type synchronization signal blocks.

A method, comprising:

• receiving a first signaling on a control link, wherein the first signaling comprises one or more first type beam indexes, the one or more first type beam indexes respectively correspond to one or more first type beams;
• receiving one or more first type synchronization signal blocks on a backhaul link by using the one or more first type beams, wherein each first type synchronization signal block in the one or more first type synchronization signal blocks comprises first information;
• and an index of each first type synchronization signal block in the one or more first type synchronization signal blocks is one of a plurality of candidate synchronization signal block indexes;
• and
• transmitting one or more second type synchronization signal blocks on an access link, wherein each second type synchronization signal block in the one or more second type synchronization signal blocks comprises the first information;
• and an index of each second type synchronization signal block in the one or more second type synchronization signal blocks is one of the plurality of candidate synchronization signal block indexes, and at least one second type synchronization signal block in the one or more second type synchronization signal blocks is different from any first type synchronization signal block in the one or more first type synchronization signal blocks.