Multi-carrier data transmission method and apparatus, storage medium, terminal, base station, AP

Abstract

A multi-carrier data transmission method and apparatus, storage medium, terminal, base station, and AP. Among them, the method includes: receiving configuration information sent by the network side, and determining multiple carriers sharing a HARQ process according to the configuration information; performing HARQ retransmission with the network side through a target carrier, where the target carrier is the original carrier for transmitting data or other carriers sharing the HARQ process with the original carrier. Thus, it is possible to solve the problem of data transmission delay caused by continuously being unable to obtain the channel usage right of the original carrier in current carrier aggregation.

Description

Technical Field

[0001] The present invention relates to the field of communication technologies, and in particular, to a multi-carrier data transmission method, apparatus, storage medium, terminal, base station, and AP. Background Art

[0002] Now consider introducing a new wireless communication system. A terminal can access the Internet through an access point (AP). The wireless technology between a user equipment (UE) and the access point AP can be Long-Term Evolution (LTE) or New Radio (NR). The access point AP can integrate some core network functions and can be deployed in licensed spectrum or unlicensed spectrum. This access point AP can be flexibly deployed in places such as homes and enterprises to provide services to a small number of users. The number of users served by this access point AP is small and may be relatively fixed.

[0003] When the access point AP is deployed in unlicensed spectrum, both the access point AP and the UE need to use Listen before Talk (LBT) to detect that the channel is idle before they can transmit signaling and data. To achieve large data volume transmission, a carrier aggregation mechanism can be adopted to configure multiple serving carriers for the UE. When the UE uses carrier aggregation, the UE has a primary cell (PCell) corresponding to a primary carrier component (PCC) and one or more secondary cells (SCells) corresponding to secondary carrier components (SCCs). For the Packet Data Convergence Protocol (PDCP) data packets for uplink transmission, the UE can transmit through the PCell or the SCell. However, once a data packet is handed over to a carrier for transmission, if the transmission is unsuccessful, the UE needs to retransmit, and the retransmission can only be performed through the current carrier. If the UE cannot obtain the right to use this carrier channel for a period of time afterwards, this data packet will remain in a pending transmission state and cannot be transmitted by other carriers, which may lead to a large delay in data packet transmission.

[0004] That is to say, in the current carrier aggregation, the data packets that are not successfully transmitted can only be transmitted by the original carrier. If the right to use the original carrier channel cannot be continuously obtained, it will lead to a large transmission delay. Summary of the Invention

[0005] The technical problem solved by the present invention is how to solve the problem of data transmission delay caused by the continuous inability to obtain the channel usage right of the original carrier in current carrier aggregation.

[0006] To solve the above problems, an embodiment of the present invention provides a multi-carrier data transmission method, the method comprising: receiving configuration information sent by a network side, and determining, according to the configuration information, a plurality of carriers sharing a HARQ process; performing HARQ retransmission with the network side through a target carrier, where the target carrier is the original carrier for transmitting data or another carrier sharing the HARQ process with the original carrier.

[0007] Optionally, the buffer occupied by the shared HARQ process is larger than the buffer occupied by the non-shared HARQ process.

[0008] Optionally, each carrier indicates the HARQ process identifier by a different number of bits.

[0009] Optionally, the number of the shared HARQ processes is less than or equal to the number of all HARQ processes of the plurality of carriers.

[0010] Optionally, the configuration information is sent through RRC signaling.

[0011] Optionally, before performing HARQ retransmission with the network side through the target carrier, the method further comprises: performing data transmission with the network side through the original carrier using the shared HARQ process; the performing HARQ retransmission with the network side through the target carrier comprises: when the data transmission is unsuccessful, receiving a scheduling instruction from the network side, the scheduling instruction being used to indicate one or more carriers for performing HARQ retransmission, the one or more carriers including the original carrier and / or another carrier sharing the HARQ process with the original carrier; determining the target carrier from the one or more carriers, and performing HARQ retransmission with the network side through the target carrier using the shared HARQ process.

[0012] Optionally, the scheduling instruction includes the downlink control instruction of the original carrier and / or the downlink control instruction of the target carrier.

[0013] Optionally, the method further comprises: in the one or more carriers, using the carrier that preferentially obtains the channel usage right as the target carrier.

[0014] Optionally, the method further comprises: in the one or more carriers, if the channel usage rights of several carriers are obtained simultaneously, selecting the carrier with the best channel quality as the target carrier.

[0015] Optionally, the shared HARQ process is used to transmit low-latency data, and the method further includes: receiving a mapping relationship between a low-latency logical channel configured by the network side and the shared HARQ process, where the low-latency logical channel is used to transmit the low-latency data; transmitting data of the low-latency logical channel with the network side through the shared HARQ process.

[0016] Optionally, the frequency band in which the network-side device operates is deployed in unlicensed spectrum.

[0017] Optionally, the method further includes: simultaneously transmitting data with the network side on multiple carriers of a shared HARQ process.

[0018] An embodiment of the present invention further provides a multi-carrier data transmission method, and the method includes: sending configuration information to a UE so that the UE determines multiple carriers of a shared HARQ process according to the configuration information; performing HARQ retransmission with the UE through a target carrier, where the target carrier is the original carrier for transmitting data or another carrier sharing the HARQ process with the original carrier.

[0019] Optionally, the buffer occupied by the shared HARQ process is larger than the buffer occupied by the non-shared HARQ process.

[0020] Optionally, each carrier indicates a HARQ process identifier by different numbers of bits.

[0021] Optionally, the number of the shared HARQ processes is less than or equal to the number of all HARQ processes of the multiple carriers.

[0022] Optionally, the sending configuration information to the UE includes: sending the configuration information to the UE through RRC signaling.

[0023] Optionally, before performing HARQ retransmission with the UE through the target carrier, it further includes: performing data transmission with the UE through the original carrier using a shared HARQ process; the performing HARQ retransmission with the UE through the target carrier includes: when the data transmission is unsuccessful, sending a scheduling instruction to the UE so that the UE determines the target carrier; performing HARQ retransmission with the UE through the target carrier using the shared HARQ process; where the scheduling instruction is used to indicate one or more carriers for performing HARQ retransmission, and the one or more carriers include the original carrier and / or another carrier sharing the HARQ process with the original carrier.

[0024] Optionally, the scheduling instruction includes a downlink control instruction of the original carrier and / or a downlink control instruction of the target carrier.

[0025] Optionally, the shared HARQ process is used to transmit low-latency data, and the method further includes: sending to the UE a mapping relationship between a logical channel configured with low latency and the shared HARQ process, where the logical channel with low latency is used to transmit the low-latency data; and transmitting, via the shared HARQ process, the data on the logical channel with low latency to the UE.

[0026] Optionally, the frequency band in which the device on the network side that executes the method operates is deployed in unlicensed spectrum.

[0027] Optionally, the method further includes: simultaneously performing data transmission with the UE on multiple carriers of a shared HARQ process.

[0028] An embodiment of the present invention further provides a multi-carrier data transmission device, where the device includes: a configuration information receiving module, configured to receive configuration information sent by an AP, and determine, according to the configuration information, multiple carriers of a shared HARQ process; and a first retransmission module, configured to perform HARQ retransmission with the network side via a target carrier, where the target carrier is the original carrier for transmitting data or another carrier that shares the HARQ process with the original carrier.

[0029] An embodiment of the present invention further provides a multi-carrier data transmission device, where the device includes: a configuration information sending module, configured to send configuration information to a UE, so that the UE determines multiple carriers of a shared HARQ process according to the configuration information; and a second retransmission module, configured to perform HARQ retransmission with the UE via a target carrier, where the target carrier is the original carrier for transmitting data or another carrier that shares the HARQ process with the original carrier.

[0030] An embodiment of the present invention further provides a storage medium, on which a computer program is stored, and when the computer program is run by a processor, the steps of any one of the methods are executed.

[0031] An embodiment of the present invention further provides a terminal, including a memory and a processor, where a computer program that can run on the processor is stored on the memory, and when the processor runs the computer program, the steps of any one of the methods are executed.

[0032] An embodiment of the present invention further provides a base station, including a memory and a processor, where a computer program that can run on the processor is stored on the memory, and when the processor runs the computer program, the steps of any one of the methods are executed.

[0033] An embodiment of the present invention further provides an AP, including a memory and a processor, where a computer program that can run on the processor is stored on the memory, and when the processor runs the computer program, the steps of any one of the methods are executed.

[0034] Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

[0035] The embodiment of the present invention provides a multi-carrier data transmission method, the method includes: receiving configuration information sent by the network side, and determining a plurality of carriers sharing a HARQ process according to the configuration information; performing HARQ retransmission with the network side through a target carrier, where the target carrier is the original carrier for transmitting data or other carriers sharing the HARQ process with the original carrier. Compared with the prior art, through this solution, the data packet that fails to be transmitted successfully can be transmitted by the original carrier or other carriers sharing the HARQ process with the original carrier. When the channel usage right of the original carrier cannot be obtained continuously, the data can also be transmitted successfully through other carriers, solving the delay problem in the prior art solution.

[0036] Further, when the channel usage right of the original carrier cannot be obtained for a long time, cross-carrier HARQ retransmission of data can be realized to avoid a large transmission delay.

[0037] Further, when multiple carriers share a HARQ process, the UE can detect multiple carriers simultaneously, and use the carrier that obtains the channel usage right first for retransmission to reduce the transmission delay; select the carrier with good channel quality for retransmission to improve the probability of successful transmission.

[0038] Further, for the scenario of sharing a HARQ process, the UE can perform data transmission with the network side simultaneously on multiple carriers sharing the HARQ process, thus providing a new duplication mechanism. The receiving side can perform joint detection on the received data on the multiple carriers to determine whether the data transmission is accurate and improve the detection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic flowchart of a multi-carrier data transmission method in an embodiment of the present invention;

[0040] Figure 2 It is a partial schematic flowchart of a multi-carrier data transmission method in an embodiment of the present invention;

[0041] Figure 3 It is a schematic flowchart of another multi-carrier data transmission method in an embodiment of the present invention;

[0042] Figure 4 It is a partial schematic flowchart of another multi-carrier data transmission method in an embodiment of the present invention;

[0043] Figure 5 It is a schematic structural diagram of a multi-carrier data transmission device in an embodiment of the present invention;

[0044] Figure 6 This is a schematic structural diagram of another multi - carrier data transmission device in the embodiments of the present invention. Detailed implementation manners

[0045] As described in the background art, in current carrier aggregation, an unsuccessfully transmitted data packet can only be transmitted by the original carrier. When the channel usage right cannot be obtained continuously, the transmission delay is relatively large.

[0046] To solve this problem, the embodiments of the present invention provide a multi - carrier data transmission method, and the method includes: receiving configuration information sent by the network side, and determining multiple carriers sharing a HARQ process according to the configuration information; performing HARQ re - transmission with the network side through a target carrier, where the target carrier is the original carrier for transmitting data or other carriers sharing the HARQ process with the original carrier.

[0047] Therefore, when the channel usage right of the original carrier cannot be obtained continuously, data can also be successfully transmitted through other carriers, solving the delay problem in the prior art solution.

[0048] To make the above - mentioned objects, features, and beneficial effects of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be given with reference to the accompanying drawings.

[0049] Please refer to Figure 1 , Figure 1 This is a schematic flowchart of a multi - carrier data transmission method according to an embodiment of the present invention, and the method specifically includes the following steps:

[0050] Step S101: Receive configuration information sent by the network side, and determine multiple carriers sharing a HARQ process according to the configuration information;

[0051] Among them, the network side, that is, the network - side device, can be a base station (eNB / gNB) or an access point (Acess Point, abbreviated as AP).

[0052] The configuration information is information sent by the network side to a terminal (which can also be called a terminal device or a user equipment (User Equipment, abbreviated as UE)). This configuration information is used to indicate that two or more carriers share a HARQ process. Two or more carriers sharing a HARQ process can all schedule the shared HARQ process. Optionally, the configuration information can also indicate the identifier of the HARQ process shared by two or more carriers, so that the UE can determine which carriers share the HARQ process and which HARQ process or processes are shared.

[0053] Optionally, the number of the shared HARQ processes is less than or equal to the total number of processes of the multiple carriers. That is, all HARQ processes of multiple carriers can be configured as shared HARQ processes, or a part of all HARQ processes of multiple carriers can be configured as shared HARQ processes.

[0054] For example, the AP manages service cells on 4 different frequency points, denoted as PCell and SCell1, Scell2, Scell3. The AP can broadcast system messages and the like on only one carrier so that the UE can camp. When the UE has a service requirement to establish an RRC connection and enters the connected state, the AP can configure carrier aggregation for the terminal. At this time, the terminal is configured with PCell and SCell1, Scell2, Scell3. The terminal also establishes a signaling radio bearer and a data radio bearer. The AP configures PCell and SCell1 of the UE as two carriers of the shared HARQ process through configuration information. The number of shared HARQ processes of PCell and SCell1 is 16, and the identifier (Identify, abbreviated as ID) of the shared HARQ process is 0 to 15.

[0055] Step S102, perform HARQ retransmission with the UE through a target carrier, where the target carrier is the original carrier for transmitting data or another carrier that shares the HARQ process with the original carrier.

[0056] Among them, the original carrier for transmitting data is the previous data transmission. Taking uplink transmission as an example, for the same data packet transmitted, if the UE hands it over to a carrier for transmission and this transmission is unsuccessful, the UE needs to perform retransmission. At this time, the carrier used for this transmission is denoted as the original carrier for transmitting data. The carrier for performing retransmission is denoted as the target carrier, and the target carrier can be the original carrier or another carrier that shares the HARQ process with the original carrier.

[0057] In the traditional solution, only retransmission can be performed through the original carrier. In the embodiments of the present invention, since two or more carriers can both call the shared HARQ process, if the original carrier calls the shared HARQ process for this transmission, during retransmission, the original carrier can call the shared HARQ process for retransmission, or another carrier that can call the shared HARQ process can perform retransmission.

[0058] Optionally, the configuration information is sent through Radio Resource Control (RRC) signaling.

[0059] Optionally, the frequency band in which the network side operates is deployed in unlicensed spectrum.

[0060] Generally, an AP provides wireless services in a home or company, is deployed in unlicensed spectrum, and uses a carrier aggregation mechanism to provide services to terminals.

[0061] Figure 1 The method described above is executed by a terminal, also known as a terminal device or user equipment (UE for short). Through this solution, packets that have not been successfully transmitted can be transmitted by the original carrier or by other carriers that share the HARQ process with the original carrier. When the channel usage right of the original carrier cannot be obtained continuously, data can also be successfully transmitted through other carriers, solving the latency problem in the prior art solution.

[0062] In one embodiment, the buffer occupied by the shared HARQ process is larger than the buffer occupied by the non-shared HARQ process.

[0063] Among them, the shared HARQ process is a HARQ process that can be called by more than one carrier. The non-shared HARQ process is a HARQ process that can be called by only a single carrier.

[0064] When two or more carriers share a HARQ process, the buffer (or buffer space, Buffer) occupied by the shared HARQ process is larger than the buffer space occupied by the non-shared HARQ process. Optionally, when N carriers share a certain HARQ process, the buffer occupied by the shared HARQ process can be N times that of the non-shared HARQ process, where N is a natural number greater than or equal to 2.

[0065] For example, if the total buffer occupied by all 16 HARQ processes is 1 Gbit, and if all these 16 HARQ processes are non-shared HARQ processes, the buffer occupied by each HARQ process is 1 / 16 Gbit. If these 16 HARQ processes are all HARQ processes shared by two carriers, the total buffer is adjusted to 2 Gbit, and the buffer occupied by each HARQ process is 2 / 16 Gbit.

[0066] If only the buffer occupied by the HARQ process is adjusted, for uplink scheduling, the number of bits of the HARQ Process ID in the existing downlink control signaling (currently 4 bits) can be used to indicate the HARQ process.

[0067] In one embodiment, each carrier indicates the HARQ process identifier (HARQ Process ID) by a different number of bits.

[0068] Optionally, when N carriers share M HARQ processes, in the M HARQ processes, each shared HARQ process may correspond to N process IDs for the N carriers to call respectively. For example, when two carriers share 8 HARQ processes, at this time, there are 24 HARQ process IDs. The first carrier can schedule HARQ Process ID 0 to 15; the second carrier can schedule HARQ process ID 8 to 23, where HARQ process ID 8 to 15 are shared HARQ processes. At this time, for the first carrier, the original 4-bit HARQ process ID can be used to indicate HARQ Process ID 0 to 15. For the second carrier, one more bit is needed to indicate the increased HARQ process, that is, 5 bits are needed to indicate HARQ process ID 8 to 23.

[0069] In one embodiment, please refer to Figure 2 , Figure 2 which is a partial flowchart of another multi-carrier data transmission method according to an embodiment of the present invention. Figure 1 Before performing HARQ retransmission with the network side through the target carrier as described in step S102, it further includes: step S201, using the shared HARQ process to perform data transmission with the network side through the original carrier;

[0070] Performing HARQ retransmission with the network side through the target carrier as described in step S102 includes: step S202, detecting whether the data transmission is successful; when the data transmission is not successful, execute step S203, receive the scheduling instruction from the network side, where the scheduling instruction is used to indicate one or more carriers for HARQ retransmission, and the one or more carriers include the original carrier and / or other carriers sharing the HARQ process with the original carrier; step S204, determine the target carrier from the one or more carriers, and use the shared HARQ process to perform HARQ retransmission with the network side through the target carrier. Optionally, when the data transmission is successful, this data transmission ends.

[0071] For one transmission, when the UE calls the shared HARQ process through the original carrier to perform data transmission with the network side, if this transmission is not successful, if the UE can obtain the channel usage right of the original carrier, the AP schedules the original carrier for data retransmission. If this transmission is not successful and the UE cannot obtain the channel usage right of the original carrier for a period of time, the AP schedules other carriers sharing the HARQ process with the original carrier for data retransmission.

[0072] Optionally, the scheduling instruction includes the downlink control instruction of the original carrier and / or the downlink control instruction of the target carrier. Here, the downlink control signaling of the original carrier refers to sending downlink control signaling to the UE through the original carrier.

[0073] As in the above example, the AP configures the PCell and SCell1 of the UE as two carriers sharing the HARQ process through configuration information. When the AP schedules the UE for uplink (UL) transmission on the PCell, after the UE obtains the right to use the channel, it selects or intercepts data of an appropriate length according to the amount of data that can be transmitted, and transmits it through the UL PCell. Assume that at this time, the UE performs the first transmission of data through HARQ process 1, and the transmitted data is stored in the buffer of HARQ process 1. Among them, HARQ process 1 is a shared HARQ process. After the UE uses the PCell for this transmission, it receives the feedback information sent by the AP through the downlink control signaling. When this transmission is unsuccessful, the AP can schedule the UE for retransmission. However, then the UE continuously fails to obtain the right to use the channel on the UL PCell, resulting in an unsuccessful uplink transmission. Because the UE applies a shared HARQ process, the AP can schedule the UE to retransmit on SCell1 through the downlink control signaling on the PCell or the downlink control signaling on SCell1. The terminal performs LBT on SCell1. If it successfully obtains the right to use the channel, it can transmit the data in the buffer of HARQ process 1 to the AP again through SCell1. After that, the UE receives the feedback sent by the access point AP. If the transmission is successful, the UE can clear HARQ process 1; if the transmission is still unsuccessful and before the maximum number of retransmissions is reached, the UE can wait for the uplink scheduling of the AP and retransmit the unsuccessfully transmitted data packet again through the PCell or SCell1.

[0074] The carrier scheduling method for downlink transmission is similar to that for uplink transmission and will not be described in detail here. Through the above method, when it is impossible to obtain the right to use the original carrier for a long time, HARQ retransmission across carriers can be realized to avoid a large transmission delay.

[0075] In one embodiment, the method further includes: among the one or more carriers, using the carrier that preferentially obtains the right to use the channel as the target carrier.

[0076] Optionally, the method further includes: among the one or more carriers, if the right to use the channels of several carriers is obtained simultaneously, selecting the carrier with the best channel quality as the target carrier.

[0077] When the network side indicates uplink grants allocated on multiple carriers through scheduling instructions, the UE simultaneously probes on the multiple carriers and uses the carrier that first obtains the channel usage right as the target carrier. The carrier with the best channel quality is the carrier with the best channel quality among those that obtain the channel usage rights of several carriers simultaneously.

[0078] In this embodiment, when multiple carriers share a HARQ process, the UE can simultaneously probe multiple carriers and use the carrier that first obtains the channel usage right for retransmission to reduce the transmission delay; select the carrier with good channel quality for retransmission to increase the probability of successful transmission.

[0079] In one embodiment, the shared HARQ process is used to transmit low-latency data, and the method further includes: receiving the mapping relationship between the low-latency logical channel configured by the network side and the shared HARQ process, where the low-latency logical channel is used to transmit the low-latency data; transmitting the data of the low-latency logical channel to the network side through the shared HARQ process.

[0080] Low-latency data is data with high requirements for real-time performance and can be configured by the network side. Optionally, the low-latency data is data of a preset service with low requirements for the latency value. In contrast, the non-shared HARQ process is used to transmit data of general services.

[0081] The network side configures the mapping relationship between the low-latency logical channel and the shared HARQ process. After the UE receives this mapping relationship, it transmits the data of the logical channel with the configured mapping relationship through the shared HARQ process.

[0082] In one embodiment, the method further includes: simultaneously transmitting data to the network side on multiple carriers through the shared HARQ process.

[0083] Correspondingly, the side receiving the data can perform joint detection on the received data on the multiple carriers to determine whether the received data is accurate. During uplink transmission, the side receiving the data is the network side; during downlink transmission, the side receiving the data is the UE side.

[0084] For the scenario of sharing a HARQ process, the base station can schedule the UE to simultaneously perform uplink transmission of the same TB (Transport Block) on two carriers, providing a new duplication mechanism. Optionally, during the initial transmission or retransmission of data, the base station can schedule the UE to simultaneously transmit the same TB on multiple carriers sharing the HARQ process.

[0085] Furthermore, the base station can schedule the UE to perform uplink transmission on two carriers simultaneously through a downlink control signaling. Since the base station configures the carriers sharing the HARQ process in advance through RRC signaling, after the base station configures duplication, the UE sends the same TB on the carriers corresponding to the shared HARQ process. At this time, the uplink carrier information does not need to be indicated in the downlink control signaling, and the existing downlink signaling format can be fully utilized without modification. For the base station, joint detection can be performed on the received data on the two carriers to improve the detection effect.

[0086] In this embodiment, for the scenario of sharing the HARQ process, the UE can simultaneously perform data transmission with the network side on multiple carriers of the shared HARQ process, thus providing a new duplication mechanism. The receiving side can perform joint detection on the received data on the multiple carriers to determine whether the data transmission is accurate and improve the detection effect.

[0087] Please refer to Figure 3 , Figure 3 which is a schematic flowchart of another multi-carrier data transmission method according to an embodiment of the present invention. The method includes:

[0088] Step S301: Send configuration information to the UE so that the UE determines multiple carriers sharing the HARQ process according to the configuration information;

[0089] Step S302: Perform HARQ retransmission with the UE through the target carrier, where the target carrier is the original carrier for transmitting data or other carriers sharing the HARQ process with the original carrier.

[0090] Optionally, the buffer occupied by the shared HARQ process is larger than the buffer occupied by the non-shared HARQ process.

[0091] Optionally, each carrier indicates the HARQ process identifier by different numbers of bits.

[0092] Optionally, the number of the shared HARQ processes is less than or equal to the number of all HARQ processes of the multiple carriers.

[0093] In one embodiment, the sending the configuration information to the UE includes: sending the configuration information to the UE through RRC signaling.

[0094] In one embodiment, before performing HARQ retransmission with the UE through the target carrier, it further includes:

[0095] Step S401: Perform data transmission with the UE through the original carrier using the shared HARQ process;

[0096] Performing HARQ retransmission with the UE via the target carrier includes:

[0097] Step S402: When data transmission is unsuccessful, send a scheduling instruction to the UE to enable the UE to determine the target carrier;

[0098] Step S403: Perform HARQ retransmission with the UE via the target carrier using the shared HARQ process;

[0099] Wherein, the scheduling instruction is used to indicate one or more carriers for performing HARQ retransmission, and the one or more carriers include the original carrier and / or other carriers sharing the HARQ process with the original carrier.

[0100] Optionally, the scheduling instruction includes the downlink control instruction of the original carrier and / or the downlink control instruction of the target carrier.

[0101] Optionally, the shared HARQ process is used to transmit low-latency data, and the method further includes: sending to the UE a mapping relationship between a logical channel configured with low latency and the shared HARQ process, where the logical channel with low latency is used to transmit the low-latency data; transmitting the data of the logical channel with low latency with the UE via the shared HARQ process.

[0102] Optionally, the device on the network side that executes the method operates in a frequency band deployed in unlicensed spectrum.

[0103] Optionally, the method further includes: simultaneously performing data transmission with the UE on multiple carriers of the shared HARQ process.

[0104] Figure 3 and Figure 4 The described method is executed by a device on the network side, such as a base station or an AP. Regarding Figure 3 or Figure 4 For more content about the working principle and working mode of the described method, reference can be made to the relevant descriptions of the network side or the AP above Figure 1 and Figure 2 and will not be elaborated here.

[0105] Please refer to Figure 5 , Figure 5 which is a schematic structural diagram of a multi-carrier data transmission device according to an embodiment of the present invention. The multi-carrier data transmission device 50 includes:

[0106] A configuration information receiving module 501, configured to receive configuration information sent by an AP and determine multiple carriers of a shared HARQ process according to the configuration information;

[0107] The first retransmission module 502 is configured to perform HARQ retransmission with the network side through a target carrier, where the target carrier is the original carrier for transmitting data or another carrier sharing the HARQ process with the original carrier.

[0108] For more content about the working principle and working mode of the above multi-carrier data transmission device 50, reference can be made to the relevant descriptions of the methods described above in Figure 1 and Figure 2 and will not be elaborated here.

[0109] Please refer to Figure 6 , Figure 6 which is a schematic structural diagram of a multi-carrier data transmission device according to an embodiment of the present invention. The multi-carrier data transmission device 60 includes:

[0110] A configuration information sending module 601, configured to send configuration information to a UE so that the UE determines multiple carriers sharing the HARQ process according to the configuration information;

[0111] A second retransmission module 602, configured to perform HARQ retransmission with the UE through a target carrier, where the target carrier is the original carrier for transmitting data or another carrier sharing the HARQ process with the original carrier.

[0112] For more content about the working principle and working mode of the above multi-carrier data transmission device 60, reference can be made to the relevant descriptions of the methods described above in Figure 3 and Figure 4 and will not be elaborated here.

[0113] An embodiment of the present invention further provides a storage medium, on which a computer program is stored. When the computer program is run by a processor, it executes Figures 1 to 2 any one of the methods, or Figures 3 to 4 the steps of the method. The storage medium may be a computer-readable storage medium, for example, it may include a non-volatile memory or a non-transitory memory, and may also include an optical disc, a mechanical hard disk, a solid-state drive, etc.

[0114] An embodiment of the present invention further provides a terminal, which may be a UE. The terminal may include a memory and a processor. A computer program that can run on the processor is stored on the memory. When the processor runs the computer program, it executes Figures 1 to 2 the steps of the method.

[0115] An embodiment of the present invention further provides a base station or an AP, including a memory and a processor. A computer program that can run on the processor is stored on the memory. When the processor runs the computer program, it executes Figures 3 to 4Steps of the method

[0116] Definition or description of common terms

[0117]

Applicability to different generations of communication systems

[0118] In the embodiments of the present invention, the network side refers to the communication network that provides communication services for terminals, including the base stations of the radio access network, and may also include the base station controllers of the radio access network, and may also include the devices on the core network side.

[0119]

Reference to terminals

[0120]

Definition of uplink and downlink

[0121]

Definition of “and / or”

[0122]

Definition of “plurality”

[0123]

Definition of “first”, “second”

[0124]

Definition of “connection”

[0125]

Reference to the processor

[0126]

Regarding the Naming of Memory

[0127] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions without departing from the spirit and scope of the present invention, and can make various modifications and alterations, including combinations of the above different functions and implementation steps, including software and hardware implementation manners, all within the protection scope of the present invention.

Claims

1. A multi-carrier data transmission method, characterized in that The method includes: Receiving configuration information sent by the network side, and determining multiple carriers sharing a HARQ process according to the configuration information; Performing HARQ retransmission with the network side through a target carrier, where the target carrier is the original carrier for transmitting data or another carrier sharing the HARQ process with the original carrier; Simultaneously performing data transmission with the network side through multiple carriers sharing the HARQ process, so that the network side performs joint detection on the data of the multiple carriers to determine whether the data is accurate; The shared HARQ process is used to transmit low-latency data, and the method further includes: Receiving the mapping relationship between the low-latency logical channel configured by the network side and the shared HARQ process, where the low-latency logical channel is used to transmit the low-latency data, and the low-latency data is data of a preset service with a latency value requirement lower than a preset threshold; Transmitting the data of the low-latency logical channel with the network side through the shared HARQ process.

2. The method according to claim 1, wherein The buffer occupied by the shared HARQ process is larger than the buffer occupied by the non-shared HARQ process.

3. The method according to claim 1, wherein Each carrier indicates the HARQ process identifier by a different number of bits.

4. The method according to claim 1, characterized in that, The number of the shared HARQ processes is less than or equal to the number of all HARQ processes of the multiple carriers.

5. The method according to any one of claims 1 to 4, characterized in that Sending the configuration information through RRC signaling.

6. The method according to claim 1, wherein Before performing HARQ retransmission with the network side through the target carrier, it further includes: Performing data transmission with the network side through the original carrier using the shared HARQ process; Performing HARQ retransmission with the network side through the target carrier includes: When the data transmission is unsuccessful, receiving a scheduling instruction from the network side, where the scheduling instruction is used to indicate one or more carriers for performing HARQ retransmission, and the one or more carriers include the original carrier and / or another carrier sharing the HARQ process with the original carrier; Determining the target carrier from the one or more carriers, and performing HARQ retransmission with the network side through the target carrier using the shared HARQ process.

7. The method according to claim 6, wherein The scheduling instruction includes the downlink control instruction of the original carrier and / or the downlink control instruction of the target carrier.

8. The method according to claim 6, characterized in that, The method further includes: Among the one or more carriers, using the carrier that preferentially obtains the channel usage right as the target carrier.

9. The method according to claim 8, wherein The method further includes: Among the one or more carriers, if the channel usage rights of several carriers are obtained simultaneously, selecting the carrier with the best channel quality as the target carrier.

10. The method according to claim 1, wherein The frequency band where the device on the network side operates is deployed in unlicensed spectrum.

11. A multi-carrier data transmission method, characterized in that, The method includes: Sending configuration information to the UE, so that the UE determines multiple carriers sharing a HARQ process according to the configuration information; Performing HARQ retransmission with the UE through a target carrier, where the target carrier is the original carrier for transmitting data or another carrier sharing the HARQ process with the original carrier; Simultaneously performing data transmission with the UE side through multiple carriers sharing the HARQ process, so that the UE performs joint detection on the data of the multiple carriers to determine whether the data is accurate; The shared HARQ process is used to transmit low-latency data, and the method further includes: Sending to the UE a mapping relationship between a logical channel configured with low latency and the shared HARQ process, where the logical channel with low latency is used to transmit the low-latency data; Transmitting, through the shared HARQ process, the data of the logical channel with low latency to the UE.

12. The method according to claim 11, wherein The buffer occupied by the shared HARQ process is larger than the buffer occupied by the non-shared HARQ process.

13. The method according to claim 11, characterized in that, Each carrier indicates the HARQ process identifier by different numbers of bits.

14. The method according to claim 12, wherein The number of the shared HARQ processes is less than or equal to the number of all HARQ processes of the multiple carriers.

15. The method according to any one of claims 12 to 14, characterized in that The sending the configuration information to the UE includes: Sending the configuration information to the UE through RRC signaling.

16. The method according to claim 11, wherein Before performing HARQ retransmission with the UE through the target carrier, it further includes: Performing data transmission with the UE through the original carrier using the shared HARQ process; The performing HARQ retransmission with the UE through the target carrier includes: When the data transmission is unsuccessful, sending a scheduling instruction to the UE so that the UE determines the target carrier; Performing HARQ retransmission with the UE through the target carrier using the shared HARQ process; Wherein, the scheduling instruction is used to indicate one or more carriers for performing HARQ retransmission, and the one or more carriers include the original carrier and / or other carriers sharing the HARQ process with the original carrier.

17. The method according to claim 16, wherein The scheduling instruction includes the downlink control instruction of the original carrier and / or the downlink control instruction of the target carrier.

18. The method according to claim 11, wherein The device on the network side that executes the method operates in a frequency band deployed in unlicensed spectrum.

19. A multi-carrier data transmission device, characterized in that, The device includes: A configuration information receiving module, configured to receive configuration information sent by an AP and determine multiple carriers of the shared HARQ process according to the configuration information; A first retransmission module, configured to perform HARQ retransmission with the network side through a target carrier, where the target carrier is the original carrier for transmitting data or other carriers sharing the HARQ process with the original carrier; A module for simultaneously performing data transmission with the network side through multiple carriers of the shared HARQ process; The shared HARQ process is used to transmit low-latency data, and the device further includes: A module for receiving the mapping relationship between the logical channel configured with low latency and the shared HARQ process sent by the network side, where the logical channel with low latency is used to transmit the low-latency data, and the low-latency data is data of a preset service whose requirement for the latency value is lower than a preset threshold, and the low-latency data is data of a preset service whose requirement for the latency value is lower than a preset threshold; A module for transmitting, through the shared HARQ process, the data of the logical channel with low latency to the network side.

20. A multi-carrier data transmission device, characterized in that, The device includes: A configuration information sending module, configured to send configuration information to the UE so that the UE determines multiple carriers of the shared HARQ process according to the configuration information; A second retransmission module, configured to perform HARQ retransmission with the UE via a target carrier, where the target carrier is the original carrier for transmitting data or another carrier sharing a HARQ process with the original carrier; A module for simultaneously transmitting data with the UE side via multiple carriers sharing a HARQ process; The shared HARQ process is used for transmitting low-latency data, and the apparatus further includes: A module for sending to the UE a mapping relationship between a low-latency logical channel configured to transmit the low-latency data and the shared HARQ process, where the low-latency logical channel is used for transmitting the low-latency data, and the low-latency data is data of a preset service with a latency value requirement lower than a preset threshold; A module for transmitting data of the low-latency logical channel with the UE via the shared HARQ process.

21. A storage medium having a computer program stored thereon, characterized in that, When the computer program is run by a processor, it executes the steps of the method according to any one of claims 1 to 10, or the steps of the method according to any one of claims 11 to 18.

22. A terminal, comprising a memory and a processor, where a computer program capable of running on the processor is stored on the memory, characterized in that When the processor runs the computer program, it executes the steps of the method according to any one of claims 1 to 10.

23. A base station, comprising a memory and a processor, wherein a computer program capable of running on the processor is stored on the memory, characterized in that When the processor runs the computer program, it executes the steps of the method according to any one of claims 11 to 18.

24. An AP, comprising a memory and a processor, where a computer program that can run on the processor is stored on the memory, characterized in that, When the processor runs the computer program, it executes the steps of the method according to any one of claims 11 to 18.

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