Communication method and system, and device
A communication method includes obtaining first information, and sending the first information to a network device. The first information includes information of a random access failure that occurs in response to a terminal device performing random access. The first information is useable to update at least one or more of a random access configuration, an uplink listen before talk (LBT) failure configuration, or a bandwidth part (BWP) configuration.
1. A communication method, wherein the method comprises:
obtaining first information, wherein the first information includes information of a random access failure that occurs in response to a terminal device performing random access; and
sending the first information to a network device, wherein the first information is useable to update at least one or more of:
a random access configuration,
an uplink listen before talk (LBT) failure configuration, or
a bandwidth part (BWP) configuration;
wherein the first information comprises a BWP switching quantity information, and the BWP switching quantity information indicates a quantity of times of BWP switching that has been performed by the terminal device before a consistent uplink LBT failure recovery is completed.
2. The method according to claim 1 wherein the first information further comprises one or more of:
identification information of at least one BWP, or
random access statistics information of the at least one BWP,
wherein
the identification information of the at least one BWP indicates a BWP on which the terminal device has performed the consistent uplink LBT failure recovery before the consistent uplink LBT failure recovery is completed; and
the random access statistics information of the at least one BWP indicates random access statistics information of the BWP on which the terminal device has performed the consistent uplink LBT failure recovery before the consistent uplink LBT failure recovery is completed.
3. The method according to claim 2 , wherein the random access statistics information of each of the at least one BWP comprises one or more of:
identification information of a synchronization signal block (SSB) or a channel state information-reference signal (CSI-RS) attempted by the terminal device on a corresponding BWP,
frequency information of the SSB or the CSI-RS attempted by the terminal device on the corresponding BWP,
a quantity of preambles attempted by the terminal device on the corresponding BWP,
a quantity of preambles for the SSB or the CSI-RS attempted by the terminal device on the corresponding BWP,
a signal quality of the SSB or the CSI-RS attempted by the terminal device on the corresponding BWP,
information indicating whether contention for preambles in a 2-step random access or a 4-step random access exists on the corresponding BWP,
a quantity of preambles in the 2-step random access and that are attempted by the terminal device on the corresponding BWP,
a quantity of preambles in the 4-step random access and that are attempted by the terminal device on the corresponding BWP, or
information indicating whether fallback from the 2-step random access to the 4-step random access occurs on the corresponding BWP.
4. The method according to claim 1 , wherein the random access configuration comprises one or more of:
a physical random access channel (PRACH) configuration of a preamble in a 2-step random access,
a time-frequency resource configuration of a payload in the 2-step random access,
indication information indicating whether fallback from the 2-step random access to a 4-step random access is allowed,
a PRACH configuration of a preamble in the 4-step random access,
grouping of preambles in the 2-step random access,
grouping of preambles in the 4-step random access,
a backoff parameter value in the 2-step random access,
a backoff parameter value in the 4-step random access,
a transmit power control parameter in the 2-step random access, or
a transmit power control parameter in the 4-step random access.
5. The method according to claim 4 , wherein the PRACH configuration comprises one or more of:
a root sequence index,
a zero correlation zone configuration,
a high speed flag,
a frequency offset,
a configuration index, or
a correspondence between a synchronization signal block (SSB) or a channel state information-reference signal (CSI-RS) and a random access resource,
wherein the root sequence index is usable to configure a logical sequence number of a start root sequence of root sequences usable by a cell, the SSB, or the CSI-RS;
the zero correlation zone configuration indicates an index value of a cyclic shift configuration usable in response to a PRACH preamble being generated;
the high speed flag is usable to determine whether the cell is a high-speed cell, whether the SSB is a high-speed SSB, or whether the CSI-RS is a high-speed CSI-RS;
the frequency offset indicates an index of a first resource block (RB) usable by the terminal device to send a preamble;
the configuration index indicates a time domain resource and a preamble format usable by the terminal device to send the preamble;
the correspondence between the SSB and the random access resource indicates a quantity of SSBs corresponding to one random access resource; and
the correspondence between the CSI-RS and the random access resource indicates a quantity of CSI-RSs corresponding to the one random access resource.
6. The method according to claim 1 , wherein the BWP configuration comprises:
information indicating whether a random access resource is configured for the terminal device on a BWP.
7. The method according to claim 1 , wherein the uplink LBT failure configuration comprises one or more of:
an uplink LBT failure timer, an uplink LBT failure counter, or an energy detection threshold.
8. A communication apparatus, comprising:
a processor; and
a transceiver;
wherein the processor is configured to obtain first information, wherein the first information includes information of a random access failure that occurs in response to a terminal device performing random access; and
the transceiver is configured to send the first information to a network device, wherein the first information is useable to update one or more of:
a random access configuration,
an uplink listen before talk (LBT) failure configuration, or
a bandwidth part (BWP) configuration;
wherein the first information comprises a BWP switching quantity information, and the BWP switching quantity information indicates a quantity of times of BWP switching that has been performed by the terminal device before a consistent uplink LBT failure recovery is completed.
9. The communication apparatus according to claim 8 , wherein the first information further comprises one or more of:
identification information of at least one BWP, or
random access statistics information of the at least one BWP,
wherein
the identification information of the at least one BWP indicates a BWP on which the terminal device has performed the consistent uplink LBT failure recovery before the consistent uplink LBT failure recovery is completed; and
the random access statistics information of the at least one BWP indicates random access statistics information of the BWP on which the terminal device has performed the consistent uplink LBT failure recovery before the consistent uplink LBT failure recovery is completed.
10. The communication apparatus according to claim 9 , wherein the random access statistics information of each of the at least one BWP comprises one or more of:
identification information of a synchronization signal block (SSB) or a channel state information-reference signal (CSI-RS) attempted by the terminal device on a corresponding BWP,
frequency information of the SSB or the CSI-RS attempted by the terminal device on the corresponding BWP,
a quantity of preambles attempted by the terminal device on the corresponding BWP,
a quantity of preambles for the SSB or the CSI-RS attempted by the terminal device on the corresponding BWP,
a signal quality of the SSB or the CSI-RS attempted by the terminal device on the corresponding BWP,
information indicating whether contention for preambles in a 2-step random access or a 4-step random access exists on the corresponding BWP,
a quantity of preambles in the 2-step random access and that are attempted by the terminal device on the corresponding BWP,
a quantity of preambles in the 4-step random access and that are attempted by the terminal device on the corresponding BWP, or
information indicating whether fallback from the 2-step random access to the 4-step random access occurs on the corresponding BWP.
11. The communication apparatus according to claim 8 , wherein the random access configuration comprises one or more of:
a physical random access channel (PRACH) configuration of a preamble in a 2-step random access,
a time-frequency resource configuration of a payload in the 2-step random access,
indication information indicating whether fallback from the 2-step random access to a 4-step random access is allowed,
a PRACH configuration of a preamble in the 4-step random access,
grouping of preambles in the 2-step random access,
grouping of preambles in the 4-step random access,
a backoff parameter value in the 2-step random access,
a backoff parameter value in the 4-step random access,
a transmit power control parameter in the 2-step random access, or
a transmit power control parameter in the 4-step random access.
12. The communication apparatus according to claim 11 , wherein the PRACH configuration comprises one or more of:
a root sequence index,
a zero correlation zone configuration,
a high speed flag,
a frequency offset,
a configuration index, or
a correspondence between a synchronization signal block (SSB) or a channel state information-reference signal (CSI-RS) and a random access resource,
wherein the root sequence index is usable to configure a logical sequence number of a start root sequence of root sequences usable by a cell, the SSB, or the CSI-RS;
the zero correlation zone configuration indicates an index value of a cyclic shift configuration usable in response to a PRACH preamble being generated;
the high speed flag is usable to determine whether the cell is a high-speed cell, whether the SSB is a high-speed SSB, or whether the CSI-RS is a high-speed CSI-RS;
the frequency offset indicates an index of a first resource block (RB) usable by the terminal device to send a preamble;
the configuration index indicates a time domain resource and a preamble format usable by the terminal device to send the preamble;
the correspondence between the SSB and the random access resource indicates a quantity of SSBs corresponding to one random access resource; and
the correspondence between the CSI-RS and the random access resource indicates a quantity of CSI-RSs corresponding to the one random access resource.
13. The communication apparatus according to claim 8 , wherein the BWP configuration comprises:
information indicating whether a random access resource is configured for the terminal device on a BWP.
14. The communication apparatus according to claim 8 , wherein the uplink LBT failure configuration comprises one or more of:
an uplink LBT failure timer, an uplink LBT failure counter, or an energy detection threshold.
15. A non-transitory computer readable medium, wherein the non-transitory computer readable medium is configured to store non-transitory instructions, and in response to being executed by a processor, the non-transitory instructions cause the processor to perform operations comprising:
obtaining first information, wherein the first information includes information of a random access failure that occurs in response to a terminal device performing random access; and
sending the first information to a network device, wherein the first information is useable to update at least one or more of:
a random access configuration,
an uplink listen before talk (LBT) failure configuration, or
a bandwidth part (BWP) configuration;
wherein the first information comprises a BWP switching quantity information, and the BWP switching quantity information indicates a quantity of times of BWP switching that has been performed by the terminal device before a consistent uplink LBT failure recovery is completed.
16. The non-transitory computer readable medium according to claim 15 , wherein the first information further comprises one or more of:
identification information of at least one BWP, or
random access statistics information of the at least one BWP,
wherein
the identification information of the at least one BWP indicates a BWP on which the terminal device has performed the consistent uplink LBT failure recovery before the consistent uplink LBT failure recovery is completed; and
the random access statistics information of the at least one BWP indicates random access statistics information of the BWP on which the terminal device has performed the consistent uplink LBT failure recovery before the consistent uplink LBT failure recovery is completed.
17. The non-transitory computer readable medium according to claim 16 , wherein the random access statistics information of each of the at least one BWP comprises one or more of:
identification information of a synchronization signal block (SSB) or a channel state information-reference signal (CSI-RS) attempted by the terminal device on a corresponding BWP,
frequency information of the SSB or the CSI-RS attempted by the terminal device on the corresponding BWP,
a quantity of preambles attempted by the terminal device on the corresponding BWP,
a quantity of preambles for the SSB or the CSI-RS attempted by the terminal device on the corresponding BWP,
a signal quality of the SSB or the CSI-RS attempted by the terminal device on the corresponding BWP,
information indicating whether contention for preambles in a 2-step random access or a 4-step random access exists on the corresponding BWP,
a quantity of preambles in the 2-step random access and that are attempted by the terminal device on the corresponding BWP,
a quantity of preambles in the 4-step random access and that are attempted by the terminal device on the corresponding BWP, or
information indicating whether fallback from the 2-step random access to the 4-step random access occurs on the corresponding BWP.
18. The non-transitory computer readable medium according to claim 15 , wherein the random access configuration comprises one or more of:
a physical random access channel (PRACH) configuration of a preamble in a 2-step random access,
a time-frequency resource configuration of a payload in the 2-step random access,
indication information indicating whether fallback from the 2-step random access to a 4-step random access is allowed,
a PRACH configuration of a preamble in the 4-step random access,
grouping of preambles in the 2-step random access,
grouping of preambles in the 4-step random access,
a backoff parameter value in the 2-step random access,
a backoff parameter value in the 4-step random access,
a transmit power control parameter in the 2-step random access, or
a transmit power control parameter in the 4-step random access.
19. The non-transitory computer readable medium according to claim 18 , wherein the PRACH configuration comprises one or more of:
a root sequence index,
a zero correlation zone configuration,
a high speed flag,
a frequency offset,
a configuration index, or
a correspondence between a synchronization signal block (SSB) or a channel state information-reference signal (CSI-RS) and a random access resource,
wherein the root sequence index is usable to configure a logical sequence number of a start root sequence of root sequences usable by a cell, the SSB, or the CSI-RS;
the zero correlation zone configuration indicates an index value of a cyclic shift configuration usable in response to a PRACH preamble being generated;
the high speed flag is usable to determine whether the cell is a high-speed cell, whether the SSB is a high-speed SSB, or whether the CSI-RS is a high-speed CSI-RS;
the frequency offset indicates an index of a first resource block (RB) usable by the terminal device to send a preamble;
the configuration index indicates a time domain resource and a preamble format usable by the terminal device to send the preamble;
the correspondence between the SSB and the random access resource indicates a quantity of SSBs corresponding to one random access resource; and
the correspondence between the CSI-RS and the random access resource indicates a quantity of CSI-RSs corresponding to the one random access resource.
20. The non-transitory computer readable medium according to claim 15 , wherein the BWP configuration comprises:
information indicating whether a random access resource is configured for the terminal device on a BWP.