METHOD AND APPARATUS FOR MEASUREMENT RELAXATION AND COMMUNICATION SYSTEM

1 . An apparatus for measurement relaxation, applicable to a terminal equipment, the apparatus comprising a first controller, the first controller being configured to:

for a serving cell configured with two or more beam failure detection reference signal (BFD-RS) sets, control the terminal equipment not to perform measurement relaxation of beam failure detection (BFD).

2 . The apparatus according to claim 1 , wherein the not to perform measurement relaxation of beam failure detection (BFD) comprises:

the measurement relaxation of beam failure detection (BFD) is not allowed.

3 . The apparatus according to claim 2 , wherein,

specifying a presence condition and/or field description of a second parameter related to a good cell quality criterion (goodServingCellEvaluationBFD) that the second parameter related to a good cell quality criterion (goodServingCellEvaluationBFD) is absent if failureDetectionSetN (N=1 or 2) is included;

wherein the second parameter related to a good cell quality criterion (goodServingCellEvaluationBFD) is for a special cell and/or for an SCell.

4 . The apparatus according to claim 1 , wherein the not to perform measurement relaxation of beam failure detection (BFD) comprises:

not evaluating whether measurement relaxation criterion(s) for beam failure detection (BFD) on the serving cell is fulfilled.

5 . The apparatus according to claim 1 , wherein,

for a serving cell not configured with two or more beam failure detection reference signal (BFD-RS) sets,

when a low mobility criterion for beam failure detection (BFD) is fulfilled,

the terminal equipment is allowed to perform the measurement relaxation of beam failure detection (BFD).

6 . An apparatus for measurement relaxation, applicable to a terminal equipment, the apparatus comprising a second controller, the second controller being configured to:

for a serving cell not configured with two or more beam failure detection reference signal (BFD-RS) sets, control the terminal equipment to perform measurement relaxation of beam failure detection (BFD).

7 . The apparatus according to claim 6 , wherein,

for the serving cell configured with two or more beam failure detection reference signal (BFD-RS) sets, the second controller control the terminal equipment not to transmit measurement relaxation state information of beam failure detection (BFD) to a network device.

8 . The apparatus according to claim 6 , wherein,

for a serving cell not configured with not two or more beam failure detection reference signal (BFD-RS) sets, the second controller controls the terminal equipment to transmit measurement relaxation state information of beam failure detection (BFD) to the network device.

9 . The apparatus according to claim 7 , wherein the terminal equipment not to transmit measurement relaxation state information of beam failure detection (BFD) to a network device comprises that:

the terminal equipment is not configured to transmit the measurement relaxation state information of beam failure detection (BFD) to the network device.

10 . The apparatus according to claim 8 , wherein the terminal equipment to transmit measurement relaxation state information of beam failure detection (BFD) to the network device comprises that:

the terminal equipment is configured to transmit the measurement relaxation state information of beam failure detection (BFD) to the network device.

11 . The apparatus according to claim 9 , wherein,

modifying a presence condition or field description of a third parameter related to beam failure detection relaxation reporting configuration (bfd-RelaxationReportingConfig).

12 . The apparatus according to claim 7 , wherein the terminal equipment not to transmit measurement relaxation state information of beam failure detection (BFD) to a network device comprises:

deeming by the terminal equipment that the terminal equipment is not configured to transmit the measurement relaxation state information of beam failure detection (BFD) to the network device.

13 . The apparatus according to claim 7 , wherein,

if the terminal equipment is configured to transmit the measurement relaxation state information of beam failure detection (BFD) to the network device,

and if the serving cell is not configured with two or more beam failure detection reference signal (BFD-RS) sets,

when a measurement relaxation state of beam failure detection (BFD) of the terminal equipment on the serving cell is changed and a minimum requirement of the terminal equipment is satisfied,

the second controller controls the terminal equipment to transmit the measurement relaxation state information to the network device.

14 . The apparatus according to claim 7 , wherein,

the not to transmit measurement relaxation state information of beam failure detection (BFD) to a network device comprises at least one of the following:

not triggering report of the measurement relaxation state information via a UE assistance information procedure;

not comprising the measurement relaxation state information in UE assistance information in a triggered UE assistance information procedure; or

setting a value of a bit corresponding to the serving cell in the UE assistance information to be of a first value in a triggered UE assistance information procedure.

15 . The apparatus according to claim 6 , wherein,

for the serving cell configured with two or more beam failure detection reference signal (BFD-RS) sets, the second controller controls the terminal equipment to transmit measurement relaxation state information of beam failure detection (BFD) to the network device.

16 . The apparatus according to claim 15 , wherein,

the measurement relaxation state comprises:

a measurement relaxation state of one beam failure detection reference signal (BFD-RS) set.

17 . The apparatus according to claim 15 , wherein,

a measurement relaxation state comprises:

measurement relaxation states of two or more beam failure detection reference signal (BFD-RS) sets.

18 . An apparatus for measurement relaxation, applicable to a terminal equipment, the apparatus comprising a third controller, the third controller being configured to:

when a serving cell not configured with two or more beam failure detection reference signal (BFD-RS) sets is performing measurement relaxation of beam failure detection (BFD), the third controller controls the terminal equipment to set a value of a measurement relaxation state of beam failure detection (BFD) to which the serving cell corresponds to be of a second value.

19 . The apparatus according to claim 18 , wherein,

when a serving cell not configured with two or more beam failure detection reference signal (BFD-RS) sets is performing measurement relaxation of beam failure detection (BFD), the third controller controls the terminal equipment to set a value of a measurement relaxation state of beam failure detection (BFD) to which the serving cell corresponds to be of the second value,

and in another case, the third controller controls the terminal equipment to set a value of a measurement relaxation state of beam failure detection (BFD) to which the serving cell corresponds to be of the first value.