Signal synchronization method and apparatus for high frequency communication

User equipment, comprising:

• a communications module, configured to perform, on a first beam pair, high frequency data communication with a small cell;
• a first receiving module, configured to:
• when it is determined that the user equipment enters a dead zone state, receive a synchronization indication signal, wherein the synchronization indication signal comprises at least quick synchronization indication information and user equipment information, and the user equipment information comprises user ID information, beam ID information of a beam pair, and cell ID information;
• a second receiving module, configured to receive, on a specified high frequency resource, a synchronization signal sent by the small cell;
• and
• a first sending module, configured to:
• perform synchronization with the small cell according to the synchronization signal, and send, to the small cell, synchronization confirmation information that carries second beam pair information, wherein a second beam pair is a beam pair that has a greatest reference signal received power and that is obtained by the user equipment by performing measurement in a current synchronization process.

A macro base station, comprising:

• a receiving module, configured to receive user equipment information reported by a small cell, wherein the user equipment information comprises user ID information, beam ID information of a beam pair, and cell ID information;
• a first sending module, configured to send a synchronization indication signal to user equipment and the small cell according to the user equipment information, wherein the synchronization indication signal comprises at least quick synchronization indication information and the user equipment information, and the user equipment information comprises the user ID information, the beam ID information of a beam pair, and the cell ID information;
• and
• a second sending module, configured to:
• when receiving synchronization confirmation information of the user equipment, send, to the small cell, the synchronization confirmation information that carries second beam pair information, so that the small cell performs, on a second beam pair, high frequency data communication with the user equipment, wherein the second beam pair is a beam pair that has a greatest reference signal received power and that is obtained by the user equipment by performing measurement in a current synchronization process.

A signal synchronization method for high frequency communication, the method comprising:

• performing, on a first beam pair, high frequency data communication with user equipment;
• if it is determined that the user equipment enters a dead zone state, sending a synchronization indication signal to the user equipment, wherein the synchronization indication signal comprises at least quick synchronization indication information and user equipment information, and the user equipment information comprises user ID information, beam ID information of a beam pair, and cell ID information;
• sending, on a specified high frequency resource, a synchronization signal to the user equipment;
• and
• if synchronization confirmation information of the user equipment is received, performing, on a second beam pair, the high frequency data communication with the user equipment according to second beam pair information in the synchronization confirmation information, wherein the second beam pair is a beam pair that has a greatest reference signal received power and that is obtained by the user equipment by performing measurement in a current synchronization process.

A signal synchronization method for high frequency communication, the method comprising:

• performing, on a first beam pair, high frequency data communication with a small cell;
• if it is determined that user equipment enters a dead zone state, receiving a synchronization indication signal, wherein the synchronization indication signal comprises at least quick synchronization indication information and user equipment information, and the user equipment information comprises user ID information, beam ID information of a beam pair, and cell ID information;
• receiving, on a specified high frequency resource, a synchronization signal sent by the small cell;
• and
• performing synchronization with the small cell according to the synchronization signal, and sending, to the small cell, synchronization confirmation information that carries second beam pair information, wherein a second beam pair is a beam pair that has a greatest reference signal received power and that is obtained by the user equipment by performing measurement in a current synchronization process.