FORWARDING CONTROL METHOD, INFORMATION TRANSMISSION METHOD, REPEATER AND NETWORK DEVICE
Embodiments of this disclosure provide a forwarding control method, an information transmission method, a repeater and a network device. The repeater includes: a mobile termination configured to perform beam failure detection; and a forwarding entity configured to be turned off/not to perform forwarding in case of beam failure.
1 . A repeater, comprising:
a mobile termination (NCR-MT) configured to perform beam failure detection; and
a forwarding entity (NCR-Fwd) configured to cease forwarding in case of beam failure.
2 . The repeater according to claim 1 , wherein the NCR-MT performs beam failure recovery (BFR).
3 . The repeater according to claim 1 , wherein the NCR-Fwd cease forwarding until the BFR is successful.
4 . The repeater according to claim 1 , wherein the NCR-Fwd performs forwarding after the BFR is successful.
5 . The repeater according to claim 1 , wherein, after BFR is successful, the NCR-Fwd performs forwarding using a backhaul link beam indicated by a MAC CE for backhaul link beam indication received by NCR-MT before beam failure.
6 . The repeater according to claim 1 , wherein after a first time period after a first PDCCH, the NCR-Fwd performs forwarding.
7 . The repeater according to claim 6 , wherein the first PDCCH is used to determine that beam failure recovery is successful and/or is used to determine that a random access procedure is completed.
8 . The repeater according to claim 4 , wherein the NCR-Fwd performs forwarding by using a first beam, the first beam being identical to a beam used in a random access attempt/random access procedure.
9 . The repeater according to claim 4 , wherein the NCR-Fwd performs forwarding by using a first beam, the first beam including a downlink beam and/or an uplink beam.
10 . The repeater according to claim 4 , wherein the NCR-Fwd performs forwarding by using a first beam, the first beam being predefined or indicated.
11 . The repeater according to claim 1 , wherein the NCR-Fwd is turned off/does not perform forwarding before the BFR is successful until a first indication information and/or a second indication information and/or a third indication information is/are received, and/or the first indication information and/or the second indication information and/or the third indication information is/are applied.
12 . The repeater according to claim 1 , wherein the NCR-Fwd performs forwarding after a first indication information and/or a second indication information and/or a third indication information is/are received, and/or the first indication information and/or the second indication information and/or the third indication information is/are applied.
13 . The repeater according to claim 1 , wherein the NCR-Fwd performs forwarding by using a first beam or a third beam after a first indication information and/or a second indication information and/or a third indication information is/are received, and/or the first indication information and/or the second indication information and/or the third indication information is/are applied.
14 . The repeater according to claim 2 , wherein that the beam failure recovery is successful comprises:
that the NCR-MT detects DCI with CRC scrambled by a C-RNTI or an MCS-C-RNTI or an RNTI for NCR in a search space (SS) provided by recoverySearchSpaceId, and/or, receives a first PDCCH, and/or, a random access procedure is completed, and/or the beam failure recovery is completed; or,
that the NCR-MT detects DCI with CRC scrambled by a C-RNTI or an MCS-C-RNTI or an RNTI for NCR in a search space provided by recoverySearchSpaceId, and/or, receives a first PDCCH, and/or, contention resolution is successful, a random access procedure is completed, and/or the beam failure recovery is completed.
15 . The repeater according to claim 11 , wherein the first indication information is used to indicate/configure a control link beam.
16 . The repeater according to claim 11 , wherein the first indication information comprises:
an MAC CE activation command for a TCI state or tci-StatesPDCCH-ToAddList (−r17/r18) and/or tci-StatesPDCCH-ToReleaseList (−r17/r18), and/or,
PUCCH resource(s) for PUCCH-SpatialRelationInfo (−r17/r18), and/or an activation command for PUCCH-SpatialRelationInfo (−r17/r18), and/or,
tci-StatesToAddModList (−r17/r18) and/or tci-StatesToReleaseList (−r17/r18), and/or,
dl-OrJointTCI-StateList (−r17/r18) and/or dl-OrJointTCI-StateToAddModList (−r17/r18) and/or dl-OrJointTCI-StateToReleaseList (−r17/r18), and/or,
ul-TCI-ToAddModList, and/or,
a second DCI.
17 . The repeater according to claim 11 , wherein the second indication information is used to indicate a backhaul link beam.
18 . The repeater according to claim 11 , wherein the third indication information is used to indicate an access link beam.
19 . The repeater according to claim 11 , wherein the third indication information includes a periodic/semi-persistent access link beam indication, an activation command, information for configuring/indicating first DCI, and/or first DCI.
20 . A communication system, comprising the repeater as claimed in claim 1 .