WO 2020/029127
`
`PCT/CN2018/099443
`
`42
`
`CLAIMS
`
`1. A user equipment (UE), comprising:
`
`a receiver, operative to receive transmissions of a Transport Block (TB)
`
`performed by another UE using each ofa first set of beams respectively;
`
`circuitry, operative to perform measurement on the received transmissions,
`
`and to select resourcefor sidelink transmission among candidate resources based ona
`
`measurement result; and
`
`a transmitter, operative to perform the sidelink transmission with the selected
`
`10
`
`resource,
`
`wherein,
`
`the circuitry is further operative to preclude,
`
`from the candidate
`
`resources, one or more candidate resources associated with a transmission using a
`
`beam ofthe first set of beams, if the measurement result of the transmission using the
`
`beam fulfills a predetermined condition.
`
`15
`
`2. The user equipment of claim 1, wherein, receiving transmissions of a TB
`
`performed by another UE using each of a first set of beams respectively comprises:
`
`receiving at least one ofinitial transmissions of the TB and retransmissions of the same
`
`TB using each of the first set of beams respectively; and
`
`20
`
`precluding one or more candidate resources associated with a transmission
`
`using a beam ofthe first set of beams comprises: precluding one or more candidate
`
`resources associated with at least one ofinitial transmission and retransmission using
`
`the beam ofthe first set of beams.
`
`25
`
`3. The user equipment of claim 1, wherein the beam is determined by
`
`measuring Reference Signal Received Power (RSRP) of sidelink Synchronization
`
`Signal
`
`(SS) or Physical Sidelink Broadcast Channel
`
`(PSBCH)
`
`for
`
`the received
`
`transmissions.
`
`30
`
`4. The user equipment of claim 1, wherein the circuitry is further operative to
`
`set a time interval for a resource selection window to include, within the resource
`
`
`
`PCT/CN2018/099443
`
`42
`
`CLAIMS
`
`1. A user equipment (UE), comprising:
`
`a receiver, operative to receive transmissions of a Transport Block (TB)
`
`performed by another UE using each ofa first set of beams respectively;
`
`circuitry, operative to perform measurement on the received transmissions,
`
`and to select resourcefor sidelink transmission among candidate resources based ona
`
`measurement result; and
`
`a transmitter, operative to perform the sidelink transmission with the selected
`
`10
`
`resource,
`
`wherein,
`
`the circuitry is further operative to preclude,
`
`from the candidate
`
`resources, one or more candidate resources associated with a transmission using a
`
`beam ofthe first set of beams, if the measurement result of the transmission using the
`
`beam fulfills a predetermined condition.
`
`15
`
`2. The user equipment of claim 1, wherein, receiving transmissions of a TB
`
`performed by another UE using each of a first set of beams respectively comprises:
`
`receiving at least one ofinitial transmissions of the TB and retransmissions of the same
`
`TB using each of the first set of beams respectively; and
`
`20
`
`precluding one or more candidate resources associated with a transmission
`
`using a beam ofthe first set of beams comprises: precluding one or more candidate
`
`resources associated with at least one ofinitial transmission and retransmission using
`
`the beam ofthe first set of beams.
`
`25
`
`3. The user equipment of claim 1, wherein the beam is determined by
`
`measuring Reference Signal Received Power (RSRP) of sidelink Synchronization
`
`Signal
`
`(SS) or Physical Sidelink Broadcast Channel
`
`(PSBCH)
`
`for
`
`the received
`
`transmissions.
`
`30
`
`4. The user equipment of claim 1, wherein the circuitry is further operative to
`
`set a time interval for a resource selection window to include, within the resource
`
`
`
`WO 2020/029127
`
`PCT/CN2018/099443
`
`43
`
`selection window, candidate resourcesfor initial transmission using each of a second
`
`set of beams and candidate resourcesfor retransmission using each of the second set
`
`of beams.
`
`5. The user equipment of claim 4, wherein the time interval for the resource
`
`selection windowfulfills latency requirement.
`
`6. The user equipment of
`
`claim 4, wherein initial
`
`transmissions or
`
`retransmissions using the second set of beams are bundled together for resource
`
`10
`
`selection in the resource selection window.
`
`7. The user equipment of claim 6, wherein the initial transmissions using the
`
`second set of beams are performed if a set of consecutive candidate resources for the
`
`initial transmissions in time domain are selected, and the retransmissions using the
`
`15
`
`second set of beams are performed if a set of consecutive candidate resources for the
`
`retransmissions in time domain are selected, the number of candidate resourcesin the
`
`set of consecutive candidate resources for the initial transmissions and the number of
`
`candidate
`
`resources
`
`in
`
`the
`
`set of consecutive
`
`candidate
`
`resources
`
`for
`
`the
`
`retransmissions being the same as the number of beams in the second set of beams
`
`20
`
`respectively.
`
`8. The user equipment of claim 2, wherein the initial
`
`transmissions or
`
`retransmissions of the same TB using the first set of beams are performed on a same
`
`position in frequency domain and consecutive positions in time domain.
`
`25
`
`9. The user equipment of claim 1, wherein the number of beams in the first set
`
`of beams is implied by sidelink SS of the other UE or indicated in PSBCH of the other
`
`UE.
`
`
`
`WO 2020/029127
`
`PCT/CN2018/099443
`
`44
`
`10. The user equipment of claim 1, wherein the sidelink transmission is
`
`performed by using a second set of beams, and the number of beams in the second set
`
`of beams is not larger than a maximum allowable number of beams determined based
`
`on transmission parameter of the UE, a corresponding transmission parameter being
`
`configured or preconfigured for a certain value of CBR and a certain value of PPPP of
`
`the UE.
`
`11. The user equipment of claim 1, wherein three or more sets of sidelink SS
`
`and PSBCH are allocated in one slot.
`
`10
`
`12. The user equipment of claim 1, wherein the circuitry is operative to
`
`perform RSRP measurementto obtain the measurementresult, and the predetermined
`
`condition is the measured RSRP exceeds a certain threshold.
`
`15
`
`13. A communication method, comprising:
`
`receiving, at a UE,
`
`transmissions of a Transport Block (TB) performed by
`
`another UE using each of a first set of beams respectively;
`
`
`
`performing measurement on the received transmissions, and_selecting
`
`resource for
`
`sidelink transmission among candidate
`
`resources based on
`
`a
`
`20
`
`measurementresult; and
`
`performing the sidelink transmission with the selected resource,
`
`wherein,
`
`the method further comprises precluding,
`
`from the candidate
`
`resources, one or more candidate resources associated with a transmission using a
`
`beam of the first set of beams, if the measurement result of the transmission using the
`
`25
`
`beam fulfills a predetermined condition.
`
`14. A user equipment (UE), comprising:
`
`a receiver, operative to perform sidelink reception from a second UE,
`
`wherein, the sidelink reception is performed with resource which is selected by
`
`30
`
`the second UE among candidate resources based on a measurement result,
`
`the
`
`
`
`WO 2020/029127
`
`PCT/CN2018/099443
`
`45
`
`measurement result being obtained by the second UE performing measurement on
`
`transmissions of a Transport Block (TB) received from a third UE and performed by the
`
`third UE using each of afirst set of beams respectively, and
`
`wherein, one or more candidate resources associated with a transmission by
`
`the third UE using a beam of the first set of beams are precluded from the candidate
`
`resources,
`
`if the measurement result of the transmission by the third UE using the
`
`beam fulfills a predetermined condition.
`
`15. A communication method, comprising:
`
`10
`
`performing, at a UE, sidelink reception from a second UE,
`
`wherein, the sidelink reception is performed with resource which is selected by
`
`the second UE among candidate resources based on a measurement result,
`
`the
`
`measurement result being obtained by the second UE performing measurement on
`
`transmissions of a Transport Block (TB) received from a third UE and performed by the
`
`15
`
`third UE using each of a first set of beams respectively, and
`
`wherein, one or more candidate resources associated with a transmission by
`
`the third UE using a beam ofthe first set of beams are precluded from the candidate
`
`resources,
`
`if the measurement result of the transmission by the third UE using the
`
`beam fulfills a predetermined condition.
`
`20
`
`
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