Method and apparatus for reporting beam failure-related information

An apparatus for receiving beam failure-related information, the apparatus being applicable to a network device, and the apparatus comprising:

• a first receiver configured to receive a beam failure recovery Medium Access Control Control Element (BFR MAC CE) containing beam failure-related information from a terminal,
• wherein in the beam failure-related information of the beam failure recovery MAC CE, when octet(s) indicating beam failure recovery information for Beam Failure Detection Reference Signal (BFD-RS) set(s) are present, the octet(s) indicating the beam failure recovery information for BFD-RS set(s) occur based on an ascending order of serving cell indices of secondary cells, or based on an ascending order of BFD-RS set identifiers or indices and an ascending order of serving cell indices of secondary cells,
• when random access procedure is initiated in case beam failure recovery is triggered for two BFD-RS sets of a special cell, the BFD-RS sets of the special cell are to be indicated in the BFR MAC CE and a result of a logical channel optimization procedure (LCP) is that Uplink Shared Channel (UL-SCH) resources available for transmission are insufficient for accommodating a BFR MAC CE containing a first bitmap of 4 octets plus its header, a BFR MAC CE containing a first bitmap of 1 octet and a second bitmap of 1 octet is used to report the beam failure-related information, the first bitmap indicates a serving cell where a BFD-RS set beam failure is detected.

A communication system, comprising a terminal and/or a network device,

• the terminal comprising an apparatus for reporting beam failure-related information, the apparatus being applicable to a terminal, and the apparatus comprising:
• first processor circuitry configured to generate a beam failure recovery Medium Access Control Control Element (BFR MAC CE) containing beam failure-related information;
• and
• a first transmitter configured to transmit the beam failure recovery MAC CE to a network device to report the beam failure-related information,
• wherein in the beam failure-related information of the beam failure recovery MAC CE, when octet(s) indicating beam failure recovery information for Beam Failure Detection Reference Signal (BFD-RS) set(s) are present, the octet(s) indicating the beam failure recovery information for BFD-RS set(s) occur based on an ascending order of serving cell indices of secondary cells, or based on an ascending order of BFD-RS set identifiers or indices and an ascending order of serving cell indices of secondary cells,
• when random access procedure is initiated in case beam failure recovery is triggered for two BFD-RS sets of a special cell, the BFD-RS sets of the special cell are to be indicated in the BFR MAC CE and a result of a logical channel optimization procedure (LCP) is that Uplink Shared Channel (UL-SCH) resources available for transmission are insufficient for accommodating a BFR MAC CE containing a first bitmap of 4 octets plus its header, a BFR MAC CE containing a first bitmap of 1 octet and a second bitmap of 1 octet is used to report the beam failure-related information, the first bitmap indicates a serving cell where a BFD-RS set beam failure is detected, and
• the network device comprising an apparatus for receiving beam failure-related information, the apparatus being applicable to a network device, and the apparatus comprising:
• a first receiver configured to receive a beam failure recovery MAC CE containing beam failure-related information from a terminal,
• wherein in the beam failure-related information of the beam failure recovery MAC CE, when octet(s) indicating beam failure recovery information for BFD-RS set(s) are present, the octet(s) indicating the beam failure recovery information for BFD-RS set(s) occur based on an ascending order of serving cell indices of secondary cells, or based on an ascending order of BFD-RS set identifiers or indices and an ascending order of serving cell indices of secondary cells,
• when random access procedure is initiated in case beam failure recovery is triggered for two BFD-RS sets of a special cell, the BFD-RS sets of the special cell are to be indicated in the BFR MAC CE and a result of a logical channel optimization procedure (LCP) is that UL-SCH resources available for transmission are insufficient for accommodating a BFR MAC CE containing a first bitmap of 4 octets plus its header, a BFR MAC CE containing a first bitmap of 1 octet and a second bitmap of 1 octet is used to report the beam failure-related information, the first bitmap indicates a serving cell where a BFD-RS set beam failure is detected.