Communication method and communication apparatus
This application provides a communication method and a communication apparatus. The communication method includes: receiving first DCI at a first receiving position in at least one receiving position, where the first DCI includes first information, the first information indicating time domain resource allocation, and the at least one receiving position is located in a same slot; performing transmission of a data channel, with the network device, on an i th first-type time domain resource in M first-type time domain resources, where a difference between the i th first-type time domain resource and an i th reference symbol is equal to a starting symbol of an i th time domain resource in a first time domain resource set, a length of the i th first-type time domain resource is equal to a length of the i th time domain resource in the first time domain resource set.
1. A communication method performed by a terminal connected to a radio network, comprising:
receiving, from a network device of the radio network, first downlink control information (DCI) at a first PDCCH monitoring occasion in a slot, the first DCI comprising an index to a corresponding row of a time domain resource allocation table, wherein the corresponding row of the time domain resource allocation table is associated with a target time domain resource in the slot for receiving PDSCH data from the network device;
obtaining data in the corresponding row of the time resource allocation table, including a starting symbol for the target time domain resource and a K0 parameter
in case of the K0 parameter having a value set to 0, identifying a location of the target time domain resource in the slot, with the starting symbol of the target time domain resource being numbered relative to a starting symbol of the first PDCCH monitoring occasion in which the first DCI is received, instead of being numbered relative to a starting symbol of the slot;
in case of the K0 parameter having a value greater than 0, identifying the location of the target time domain resource in a slot, with the starting symbol of the target time domain resource being numbered relative to the starting symbol of the slot; and
receiving the PDSCH data from the network device using the target time resource at the identified location in the slot.
2. The method according to claim 1 , wherein the PDSCH data received using the target time domain resource is ultra-reliable low-latency communication (URLLC) data.
3. A communications apparatus connected to a radio network, comprising:
at least one processor; and
one or more memories coupled to the at least one processor and storing programming instructions that, when executed by the at least one processor, cause the apparatus to:
receive, from a network device of the radio network, first downlink control information (DCI) at a first PDDCH monitoring occasion in a slot, the first DCI comprising an index to a corresponding row of a time domain resource allocation table, wherein the corresponding row of the time domain resource allocation table is associated with a target time domain resource in the slot for receiving PDSCH data from the network device;
obtain data in the corresponding row of the time resource allocation table, including a starting symbol for the target time domain resource and a K0 parameter;
in case of the K0 parameter having a value set to 0, identify a location of the target time domain resource in the slot, with the starting symbol of the target time domain resource being numbered relative to a starting symbol of the first PDCCH monitoring occasion in which the first DCI is received, instead of being numbered relative to a starting symbol of the slot;
in case of the K0 parameter having a value greater than 0, identify the location of the target time domain resource in a slot, with the starting symbol of the target time domain resource being numbered relative to the starting symbol of the slot; and
receive the PDSCH data from the network device using the target time resource at the identified location in the slot.
4. The apparatus according to claim 3 , wherein the PDSCH data received using the target time domain resource is ultra-reliable low-latency communication (URLLC) data.
5. A network device of a radio network, comprising: at least one processor, and one or more memories coupled to the at least one processor and storing programming instructions that, when executed by the at least one processor, cause the network device to:
send, to a terminal at a first PDCCH monitoring occasion in a slot, first downlink control information (DCI), wherein the first DCI comprises an index to a corresponding row of a time domain resource allocation table, the corresponding row of the time domain resource allocation table is associated with a target time domain resource in the slot for the terminal to receive PDSCH data from the network device, and includes a starting symbol for the target time domain resource and a K0 parameter,
setting the K0 parameter to have a value of 0 or greater than 0, wherein the K0 parameter having a value of 0 indicates to the terminal that a location of the target time domain resource in the slot is to be determined with the starting symbol for the target time domain resource being numbered relative to a starting symbol of the first PDCCH monitoring occasion in which the first DCI is sent, instead of being numbered relative to a starting symbol of the slot, the K0 parameter having a value greater than 0 indicates to the terminal that the location of the target time domain resource in a slot is to be determined with the starting symbol for the target time domain resource being numbered relative to the starting symbol of the slot; and
transmitting the PDSCH data to the terminal using the target time domain resource in the slot.
6. The network device according to claim 5 , wherein the PDSCH data transmitted to the terminal using the target time domain resource is ultra-reliable low-latency communication (URLLC) data.