CN-114828236-B - Cross-carrier channel repeated transmission method and device, storage medium, terminal and network equipment

Abstract

A method for transmitting data in a cross-carrier channel repeatedly includes receiving a scheduling command of data transmission sent by network equipment, indicating that cross-carrier scheduling/cross-carrier transmission occurs in the data transmission, determining the number of times of channel repeated transmission of the data transmission according to the number of times of channel repeated transmission of an original carrier and/or a target carrier, wherein cross-carrier scheduling is that the network equipment sends the scheduling command on the original carrier and indicates the terminal to transmit the data on the target carrier, and cross-carrier transmission is that the network equipment sends the scheduling command on the original carrier and indicates the terminal to transmit the data on the original carrier and the target carrier. Thus, in the scenario of cross-carrier scheduling/transmission, the UE can determine the value of the number of channel repeated transmissions.

Inventors

• LEI ZHENZHU

Assignees

• 展讯半导体(南京)有限公司

Dates

Publication Date

20260505

Application Date

20210129

Claims (20)

1. 1. A method for cross-carrier channel repeat transmission, the method comprising: Receiving a scheduling instruction of data transmission sent by network equipment, wherein the scheduling instruction is an instruction for the network equipment to schedule UE (user equipment) to perform data transmission and is used for indicating cross-carrier scheduling/cross-carrier transmission in the data transmission process; Determining the channel repeated transmission times of the data transmission according to the channel repeated transmission times of the original carrier and/or the target carrier; the cross-carrier scheduling is that the network equipment sends a scheduling instruction on an original carrier and instructs a terminal to perform data transmission on a target carrier, and the cross-carrier transmission is that the network equipment sends the scheduling instruction on the original carrier and instructs the terminal to perform data transmission on the original carrier and the target carrier; wherein, in the case that the scheduling instruction indicates that cross-carrier transmission occurs, the method further includes: on the original carrier wave, determining partial repeated transmission times of the channel of the data transmission and carrying out data transmission on the network equipment; And on the target carrier, determining the rest repeated transmission times of the channel of the data transmission and carrying out data transmission on the network equipment.
2. 2. The method according to claim 1, wherein the scheduling instruction indicates that cross-carrier scheduling occurs, and the determining the number of channel retransmissions for the current data transmission according to the number of channel retransmissions for the original carrier and/or the target carrier includes: the channel repeated transmission times of the target carrier wave are used as the channel repeated transmission times of the data transmission; The method further comprises the steps of after determining the channel repeated transmission times of the current data transmission according to the channel repeated transmission times of the original carrier and/or the target carrier: and on the target carrier, carrying out data transmission by using the repeated transmission times of the channel of the current data transmission and the network equipment.
3. 3. The method of claim 2, wherein if the number of channel transmissions of the target carrier includes a plurality of values, the scheduling instruction further instructs one of the plurality of channel transmission number values of the target carrier, and the taking the number of channel retransmission of the target carrier as the number of channel retransmission of the current data transmission includes: And determining one of the multiple channel repeated transmission times of the target carrier according to the scheduling instruction, and taking the determined channel repeated transmission times as the channel repeated transmission times of the current data transmission.
4. 4. The method according to claim 2, wherein the determining the number of channel repeat transmissions of the present data transmission according to the number of channel repeat transmissions of the original carrier and/or the target carrier includes: And selecting the channel repeated transmission time of the original carrier wave and the channel repeated transmission time of the target carrier wave as the channel repeated transmission time of the current data transmission.
5. 5. The method of claim 1, wherein the scheduling instruction further indicates an index of transmission coefficients, the method further comprising: determining a transmission coefficient according to the index of the transmission coefficient, wherein the transmission coefficient indicates the ratio of the number of repeated transmission times of the actual transmission channel of the original carrier wave/target carrier wave in the data transmission to the number of repeated transmission times of the channel of the data transmission; And determining the channel repeated transmission times of the actual transmission of the original carrier and the channel repeated transmission times of the actual transmission of the target carrier in the current data transmission according to the transmission coefficient.
6. 6. The method according to claim 5, wherein determining the number of channel repeat transmissions of the actual transmission of the original carrier and the number of channel repeat transmissions of the actual transmission of the target carrier in the present data transmission according to the transmission coefficient comprises: Calculating the product of the channel repeated transmission times of the data transmission and the transmission coefficient to be used as the channel repeated transmission times of the actual transmission of one carrier wave in the original carrier wave and the target carrier wave; And calculating the difference value of the channel repeated transmission times of the data transmission and the product, and taking the difference value as the channel repeated transmission times of the actual transmission of the other carrier in the original carrier and the target carrier.
7. 7. The method of claim 6, wherein the channel retransmission times of the original carrier and the channel retransmission times of the target carrier having the largest value are selected as the channel retransmission times of the current data transmission.
8. 8. The method of claim 6 wherein the number of channel repeat transmissions for the current data transmission is determined by the size of the transmission coefficient as the number of channel repeat transmissions for one of the primary carrier and the target carrier.
9. 9. The method according to claim 5, wherein determining the number of channel repeat transmissions of the actual transmission of the original carrier and the number of channel repeat transmissions of the actual transmission of the target carrier in the present data transmission according to the transmission coefficient comprises: Calculating the product of the channel repeated transmission times of one carrier wave in the original carrier wave and the target carrier wave and the transmission coefficient to be used as the channel repeated transmission times of the actual transmission of the carrier wave; Calculating the difference between the transmission coefficient and the 1, and recording the difference as an intermediate coefficient; and calculating the product of the channel repeated transmission times of the other carrier in the original carrier and the target carrier and the intermediate coefficient to be used as the channel repeated transmission times of the actual transmission of the carrier.
10. 10. The method according to claim 1, wherein the scheduling instruction indicates that cross-carrier transmission occurs, and the determining the number of channel repeat transmissions of the present data transmission according to the number of channel repeat transmissions of the original carrier and/or the target carrier further includes: determining the repeated transmission times of actual transmission of the data transmitted on the original carrier in the current transmission data according to the repeated transmission times of the channel of the original carrier; And determining the repeated transmission times of actual transmission of the data transmitted on the target carrier in the current transmission data according to the repeated transmission times of the channel of the target carrier.
11. 11. The method of claim 10, wherein the scheduling instruction further indicates data transmitted on an original carrier and/or data transmitted on a target carrier for the current data transmission.
12. 12. The method of claim 10 or 11, wherein the data portion is in TB as granularity units.
13. 13. The method according to any of claims 1 to 11, wherein the scheduling instruction is scheduling information carried in DCI and/or a random access response.
14. 14. The method according to any one of claims 1 to 11, wherein the channels of the present data transmission at least include PUSCH and PDSCH.
15. 15. A method for cross-carrier channel repeat transmission, the method comprising: generating a scheduling instruction of data transmission, wherein the scheduling instruction is an instruction for scheduling the UE to perform data transmission by the network equipment and is used for indicating cross-carrier scheduling/cross-carrier transmission in the data transmission process; The scheduling instruction is sent to a terminal, so that the terminal determines the channel repeated transmission times of the data transmission according to the channel repeated transmission times of the original carrier and/or the target carrier; the cross-carrier scheduling is that the network equipment sends a scheduling instruction on an original carrier and instructs the terminal to perform data transmission on a target carrier, and the cross-carrier transmission is that the network equipment sends the scheduling instruction on the original carrier and instructs the terminal to perform data transmission on the original carrier and the target carrier; wherein, in the case that the scheduling instruction indicates that cross-carrier transmission occurs, the method further includes: On the original carrier wave, determining partial repeated transmission times of the channel of the data transmission and the terminal for data transmission; And on the target carrier, determining the rest repeated transmission times of the channel of the data transmission and the terminal to perform data transmission.
16. 16. The method of claim 15, wherein the scheduling instruction indicates that cross-carrier scheduling occurs, and wherein the step of transmitting the scheduling instruction to the terminal further comprises: And carrying out data transmission on the target carrier by using the channel repeated transmission times of the data transmission and the terminal, wherein the channel repeated transmission times of the data transmission are the channel repeated transmission times of the target carrier.
17. 17. The method of claim 16 wherein if the number of channel transmissions for the target carrier includes a plurality of values, the scheduling instruction further instructs one of the plurality of channel transmission number values for the target carrier to cause the terminal to determine one of the plurality of channel retransmission numbers for the target carrier according to the scheduling instruction, and the determined channel retransmission number is taken as the number of channel retransmission numbers for the current data transmission.
18. 18. The method of claim 16 wherein the number of channel retransmissions for the current data transmission is the largest of the number of channel retransmissions for the original carrier and the number of channel retransmissions for the target carrier.
19. 19. The method of claim 15, wherein the scheduling instruction further indicates an index of a transmission coefficient, so that the terminal determines the transmission coefficient according to the transmission coefficient index, and determines the number of channel repeat transmissions of the actual transmission of the original carrier and the number of channel repeat transmissions of the actual transmission of the target carrier in the current data transmission according to the transmission coefficient; The transmission coefficient indicates a ratio of the number of channel repeated transmission of the original carrier wave/target carrier wave in the current data transmission to the number of channel repeated transmission of the current data transmission.
20. 20. The method of claim 19 wherein the number of channel retransmissions for the actual transmission of one of the primary carrier and the target carrier is the product of the number of channel retransmissions for the current data transmission and the transmission coefficient, and the number of channel retransmissions for the actual transmission of the other of the primary carrier and the target carrier is the difference between the number of channel retransmissions for the current data transmission and the product.

Description

Cross-carrier channel repeated transmission method and device, storage medium, terminal and network equipment Technical Field The present invention relates to the field of communications technologies, and in particular, to a method and apparatus for cross-carrier channel repeated transmission, a storage medium, a terminal, and a network device. Background In the current internet of things protocol, in order to guarantee coverage, narrowband internet of things (Narrow Band Internet of Things, NB-IoT)/enhanced machine Communication (eMTC) adopts a retransmission technology. The maximum repetition number for downlink transmission is 2048 times, and the maximum repetition number for uplink transmission is 128 times. In NTN (non terrestrial networks, non-terrestrial network) scenario, one cell is composed of multiple beams (beams). Due to the fast movement of the satellites, the UE needs to perform beam switching frequently. Future internet of things devices access through satellite networks, a set of beam management mechanisms is needed, that is, current terrestrial internet of things protocols (i.e., NB-IoT/eMTC) do not support beam management mechanisms. At present, a more possible beam management mode is to perform beam management through a carrier switching mode, that is, one cell is composed of a plurality of beams, different beams correspond to different carriers, and the switching of the beams is realized through carrier switching. However, in the existing protocol, for the cross-carrier scheduling/transmission scenario, the UE cannot determine the value of the number of channel repeated transmissions. Disclosure of Invention The invention solves the technical problem of how to determine the value of the repeated transmission times of the channel in the scene of cross-carrier scheduling/transmission. In order to solve the problems, the embodiment of the invention provides a cross-carrier channel repeated transmission method, which comprises the steps of receiving a scheduling instruction of data transmission sent by network equipment, wherein the scheduling instruction indicates that the data transmission is subjected to cross-carrier scheduling/cross-carrier transmission, and determining the number of the repeated channel transmission of the data transmission according to the number of the repeated channel transmission of an original carrier and/or a target carrier, wherein the cross-carrier scheduling is that the network equipment sends the scheduling instruction on the original carrier and indicates a terminal to perform data transmission on the target carrier, and the cross-carrier transmission is that the network equipment sends the scheduling instruction on the original carrier and indicates the terminal to perform data transmission on the original carrier and the target carrier. Optionally, the scheduling instruction indicates that cross-carrier scheduling occurs, and the determining the channel repeat transmission times of the current data transmission according to the channel repeat transmission times of the original carrier and/or the target carrier includes taking the channel repeat transmission times of the target carrier as the channel repeat transmission times of the current data transmission, and after determining the channel repeat transmission times of the current data transmission according to the channel repeat transmission times of the original carrier and/or the target carrier, further includes performing data transmission on the target carrier by using the channel repeat transmission times of the current data transmission and the network device. Optionally, if the channel transmission times of the target carrier include multiple values, the scheduling instruction further indicates one of the multiple channel transmission times of the target carrier, and the channel retransmission times of the target carrier is taken as the channel retransmission times of the current data transmission, including determining one of the multiple channel retransmission times of the target carrier according to the scheduling instruction, and taking the determined channel retransmission times as the channel retransmission times of the current data transmission. Optionally, the determining the channel repeated transmission times of the current data transmission according to the channel repeated transmission times of the original carrier and/or the target carrier comprises selecting one of the channel repeated transmission times of the original carrier and the channel repeated transmission times of the target carrier with the largest value as the channel repeated transmission times of the current data transmission. Optionally, the scheduling instruction indicates that cross-carrier transmission occurs, and after determining the channel repeat transmission times of the current data transmission according to the channel repeat transmission times of the original carrier and/or the target carrier, the schedulin