Method for determining time domain position of resource and transmit end
The present disclosure provides a resource determining and transmission method, and a transmit end. The resource determining method includes: determining that a time domain position of a second target resource of a first TB is after a time domain position in which feedback information corresponding to a first target resource is located. The resource transmission method includes: during second TB transmission, in a case that a transmission interval between a third target resource and a fourth target resource of a second TB does not satisfy an HARQ RTT condition, perform transmission control, so that the transmission interval between transmission resources in the second TB transmission satisfies the HARQ RTT condition.
1 . A resource determining method performed by a transmit end, comprising:
determining that a time domain position of a second target resource of a first transport block (TB) is after a time domain position in which feedback information corresponding to a first target resource is located, wherein
the first target resource is at least one of a physical sidelink shared channel (PSSCH) transmission resource or a physical sidelink control channel (PSCCH) transmission resource; and the second target resource is at least one of a PSSCH transmission resource or a PSCCH transmission resource;
wherein the determining that a time domain position of a second target resource of a first transport block (TB) is after a time domain position in which feedback information corresponding to a first target resource is located comprises:
during resource allocation, a time interval between allocating the first target resource and the second target resource of the first TB being at least greater than (“>”) or greater than or equal to (“≥”) a hybrid automatic repeat request round-trip time (HARQ RTT), and for transmission resources of other TBs that are periodically reserved after the time domain resource in which the first TB is located, a time interval between reserved transmission resources in each period being at least greater than or greater than or equal to the HARQ RTT;
wherein a same sidelink process or sidelink reservation process cannot be simultaneously used for hybrid automatic repeat request (HARQ) feedback based retransmission and blind retransmission.
2 . The resource determining method according to claim 1 , wherein the determining that a time domain position of a second target resource of a first transport block (TB) is after a time domain position in which feedback information corresponding to a first target resource is located further comprises at least one of the following:
during resource allocation, a time interval between allocating the first target resource and the second target resource of the first TB being at least greater than or greater than or equal to a physical sidelink feedback channel (PSFCH) period;
during resource reservation, in a case that a process in which the first TB is located supports periodic reservation, configuring a resource reservation period of the process in which the first TB is located to be an integer multiple of the PSFCH period, wherein the process is a sidelink process or a sidelink reservation process;
during resource allocation, a time interval between allocating the first target resource and the second target resource of the first TB being at least greater than or greater than or equal to a maximum HARQ RTT, and for transmission resources of other TBs that are periodically reserved after the time domain resource in which the first TB is located, a time interval between reserved transmission resources in each period being at least greater than or greater than or equal to the HARQ RTT;
during resource reservation, a time interval between the first target resource and the second target resource of the first TB being at least greater than or greater than or equal to the HARQ RTT; or
obtaining a resource that a control node allocates to a transmit end during resource allocation, wherein an expectation of the transmit end to the allocated resource is that a time interval between the first target resource and the second target resource of the first TB is at least greater than or greater than or equal to the HARQ RTT.
3 . The resource determining method according to claim 1 , wherein the second target resource and the first target resource are used for at least one of HARQ feedback based PSSCH retransmission or PSCCH retransmission.
4 . A transmit end, comprising:
a processor; and
a memory storing a program or an instruction that is executable on the processor, wherein the program or the instruction, when executed by the processor, causes the transmit end to perform the following steps:
determining that a time domain position of a second target resource of a first transport block (TB) is after a time domain position in which feedback information corresponding to a first target resource is located, wherein
the first target resource is at least one of a physical sidelink shared channel (PSSCH) transmission resource or a physical sidelink control channel (PSCCH) transmission resource; and the second target resource is at least one of a PSSCH transmission resource or a PSCCH transmission resource;
wherein the determining that a time domain position of a second target resource of a first transport block (TB) is after a time domain position in which feedback information corresponding to a first target resource is located comprises:
during resource allocation, a time interval between allocating the first target resource and the second target resource of the first TB being at least greater than (“>”) or greater than or equal to (“≥”) a hybrid automatic repeat request round-trip time (HARQ RTT), and for transmission resources of other TBs that are periodically reserved after the time domain resource in which the first TB is located, a time interval between reserved transmission resources in each period being at least greater than or greater than or equal to the HARQ RTT;
wherein a same sidelink process or sidelink reservation process cannot be simultaneously used for hybrid automatic repeat request (HARQ) feedback based retransmission and blind retransmission.
5 . The transmit end according to claim 4 , wherein the determining that a time domain position of a second target resource of a first transport block (TB) is after a time domain position in which feedback information corresponding to a first target resource is located further comprises at least one of the following:
during resource allocation, a time interval between allocating the first target resource and the second target resource of the first TB being at least greater than or greater than or equal to a physical sidelink feedback channel (PSFCH) period;
during resource reservation, in a case that a process in which the first TB is located supports periodic reservation, configuring a resource reservation period of the process in which the first TB is located to be an integer multiple of the PSFCH period, wherein the process is a sidelink process or a sidelink reservation process;
during resource allocation, a time interval between allocating the first target resource and the second target resource of the first TB being at least greater than or greater than or equal to a maximum HARQ RTT, and for transmission resources of other TBs that are periodically reserved after the time domain resource in which the first TB is located, a time interval between reserved transmission resources in each period being at least greater than or greater than or equal to the HARQ RTT;
during resource reservation, a time interval between the first target resource and the second target resource of the first TB being at least greater than or greater than or equal to the HARQ RTT; or
obtaining a resource that a control node allocates to a transmit end during resource allocation, wherein an expectation of the transmit end to the allocated resource is that a time interval between the first target resource and the second target resource of the first TB is at least greater than or greater than or equal to the HARQ RTT.
6 . The transmit end according to claim 4 , wherein the second target resource and the first target resource are used for at least one of HARQ feedback based PSSCH retransmission or PSCCH retransmission.
7 . A non-transitory readable storage medium storing a program or an instruction, wherein the program or the instruction, when executed by a processor, causes the processor to perform the resource determining method according to claim 1 .
8 . A non-transitory readable storage medium storing a program or an instruction, wherein the program or the instruction, when executed by a processor, causes the processor to perform the resource determining method according to claim 2 .
9 . A non-transitory readable storage medium storing a program or an instruction, wherein the program or the instruction, when executed by a processor, causes the processor to perform the resource determining method according to claim 3 .