DEVICE IDENTIFICATION METHOD AND APPARATUS
A device identification apparatus, applicable to a first network device, the device identification apparatus includes: a receiver configured to receive first information transmitted by a first device, wherein, the first information is used to indicate that the first device is a Network-Controlled repeater or is used to determine that the first device connects to a network as a Network-Controlled repeater, or, the first information is repeater-specific first information.
1 . A device identification apparatus, applicable to a first network device, the device identification apparatus comprising:
a receiver configured to receive first information transmitted by a first device, wherein,
the first information is used to indicate that the first device is a Network-Controlled repeater or is used to determine that the first device connects to a network as a Network-Controlled repeater; or, the first information is repeater-specific first information.
2 . The device identification apparatus according to claim 1 , further comprising:
processor circuitry configured to determine that the first device is a Network-Controlled repeater or that the first device connects to a network as a Network-Controlled repeater according to the first information.
3 . The device identification apparatus according to claim 1 , wherein,
the first information includes first indication information in a first message after random access procedure is completed.
4 . The device identification apparatus according to claim 3 , wherein,
the first message after the random access procedure is completed is an RRC (radio resource control) setup complete message.
5 . The device identification apparatus according to claim 4 , wherein,
the first indication information in the first message after random access procedure is completed is used to indicate that the first device connects to a network as a Network-Controlled repeater.
6 . The device identification apparatus according to claim 1 , further comprising:
a transmitter configured to transmit configuration information to the first device, the configuration information comprising at least one of the following information:
repeater-specific PRACH (physical random access channel) configuration information, or
repeater-specific random access preamble configuration information.
7 . The device identification apparatus according to claim 6 , wherein,
the repeater-specific PRACH configuration information comprises at least one of the following information:
the number of PRACH transmission occasions frequency-division multiplexed in one time instance;
an offset of a lowest PRACH transmission occasion in a frequency domain relative to PRBO (physical resource block 0);
an index of PRACH configuration;
a subcarrier spacing of a PRACH;
the number of SSBs (synchronization signal blocks) per RACH (random access channel) occasion;
a scaling factor of a PRACH configuration period; or
a frame offset of a PARCH transmission occasion.
8 . The device identification apparatus according to claim 6 , wherein,
the repeater-specific random access preamble configuration information includes at least one of the following information:
a PRACH root sequence index;
the number of preambles used for contention-based random access of the repeater;
the number of contention-based preambles per SSB in group A;
the number of contention-based preambles per SSB;
a total number of preambles used for contention-based 4-step random access or 2-step random access in an RACH resource; or
existing random access preamble subset indication information.
9 . A device identification apparatus, applicable to a first device, the device identification apparatus comprising:
a transmitter configured to transmit first information to a first network device, the first information being used to indicate that the first device is a Network-Controlled repeater or is used to determine that the first device connects to a network as a Network-Controlled repeater, or, the first information being repeater-specific first information.
10 . The device identification apparatus according to claim 9 , wherein,
the first information includes first indication information in a first message after random access procedure is completed.
11 . The device identification apparatus according to claim 10 , wherein,
the first message after the random access procedure is completed is an RRC (radio resource control) setup complete message.
12 . The device identification apparatus according to claim 11 , wherein,
the first indication information in the first message after random access procedure is completed is used to indicate that the first device connects to a network as a Network-Controlled repeater.
13 . The device identification apparatus according to claim 9 , wherein the apparatus further comprises:
a receiver configured to receive configuration information from the first network device, the configuration information comprising at least one of the following information:
repeater-specific PRACH (physical random access channel) configuration information, or
repeater-specific random access preamble configuration information.
14 . The device identification apparatus according to claim 13 , wherein,
the repeater-specific PRACH configuration information comprises at least one of the following information:
the number of PRACH transmission occasions frequency-division multiplexed in one time instance;
an offset of a lowest PRACH transmission occasion in a frequency domain relative to PRBO (physical resource block 0);
an index of PRACH configuration;
a subcarrier spacing of a PRACH;
the number of SSBs (synchronization signal blocks) per RACH (random access channel) occasion;
a scaling factor of a PRACH configuration period; or
a frame offset of a PARCH transmission occasion.
15 . The device identification apparatus according to claim 13 , wherein,
the repeater-specific random access preamble configuration information comprises at least one of the following information:
a PRACH root sequence index;
the number of preambles used for contention-based random access of the repeater;
the number of contention-based preambles per SSB in group A;
the number of contention-based preambles per SSB;
a total number of preambles used for contention-based 4-step random access or 2-step random access in an RACH resource; or
existing random access preamble subset indication information.
16 . The device identification apparatus according to claim 9 , further comprising:
processor circuitry configured to select/use a repeater-specific random access resource and/or a random access preamble.
17 . The device identification apparatus according to claim 16 , wherein,
when a random access procedure is initialized, the processor circuitry is configured to use the repeater-specific random access resource and/or the random access preamble; or,
the processor circuitry is configured to select a downlink reference signal, the downlink reference signal being configured with a repeater-specific random access resource and/or a random access preamble;
and according to a selected downlink reference signal, the processor circuitry is configured to determine the repeater-specific random access resource and/or the random access preamble from multiple random access resources and/or random access preambles associated with the downlink reference signal.
18 . A communication system comprising:
a first device configured to, transmit first information,
a first network device configured to receive the first information transmitted by the first device,
wherein, the first information is used to indicate that the first device is a Network-Controlled repeater or is used to determine that the first device connects to a network as a Network-Controlled repeater; or, the first information is repeater-specific first information.