CN114650601A

CN114650601A - Multi-carrier data transmission method and device, storage medium, terminal, base station, and AP

Info

Publication number: CN114650601A
Application number: CN202011523249.2A
Authority: CN
Inventors: 邓云
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2022-06-21
Also published as: WO2022134950A1

Abstract

A multi-carrier data transmission method and device, a storage medium, a terminal, a base station and an AP are provided, wherein the method comprises the following steps: receiving configuration information sent by a network side, and determining a plurality of carriers sharing an HARQ process according to the configuration information; and carrying out HARQ retransmission with the network side through a target carrier, wherein the target carrier is an original carrier for transmitting data or other carriers sharing an HARQ process with the original carrier. Therefore, the problem of time delay of data transmission caused by the fact that the channel use right of the original carrier cannot be obtained continuously in the current carrier aggregation can be solved.

Description

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

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting multicarrier data, a storage medium, a terminal, a base station, and an AP.

Background

Now, a New wireless communication system is considered to be introduced, a terminal may Access to the internet through an Access Point (AP), a Long Term Evolution (LTE) or New Radio interface (NR) wireless technology is adopted between a User Equipment (UE) and the AP, and the AP may integrate a part of core network functions, may be deployed in an authorized spectrum, and may also be deployed in an unauthorized spectrum. The access point AP can be flexibly deployed in places such as families, enterprises and the like to provide services for a small part of users. This access point AP serves fewer users and may be more stationary.

When the AP is deployed in an unlicensed spectrum, both the AP and the UE need to monitor before a session or Listen Before Talk (LBT) to detect that a channel is idle, and then signaling and data can be transmitted. In order to realize transmission of large data volume, a mechanism of carrier aggregation may be adopted to configure multiple serving carriers for the UE. When the UE employs Carrier aggregation, the UE has a Primary Cell (PCell) corresponding to a Primary Carrier (PCC) and a Secondary Cell (SCell) corresponding to one or more Secondary carriers (SCC), and for a Packet Data Convergence Protocol (PDCP) Packet for uplink transmission, the UE may transmit through the PCell or may transmit through the SCell. However, once a certain data packet is delivered to one carrier for transmission, if the transmission is unsuccessful, the UE needs to retransmit, and the retransmission can only be performed through the current carrier, and if the UE cannot obtain the right to use the carrier channel for a while, the data packet is always in a state of waiting for transmission and cannot be transmitted by other carriers, which may result in a large delay in data packet transmission.

That is, in the current carrier aggregation, the unsuccessfully transmitted data packet can only be transmitted by the original carrier, and if the channel use right of the original carrier is not continuously obtained, the transmission delay is large.

Disclosure of Invention

The technical problem solved by the invention is how to solve the problem of time delay of data transmission caused by continuously not obtaining the channel use right of the original carrier in the current carrier aggregation.

In order to solve the above problem, an embodiment of the present invention provides a multicarrier data transmission method, where the method includes: receiving configuration information sent by a network side, and determining a plurality of carriers sharing an HARQ process according to the configuration information; and carrying out HARQ retransmission with the network side through a target carrier, wherein the target carrier is an original carrier for transmitting data or other carriers sharing an HARQ process with the original carrier.

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

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

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

Optionally, the configuration information is sent through RRC signaling.

Optionally, before performing HARQ retransmission with the network side through the target carrier, the method further includes: performing data transmission with the network side through the original carrier by using a shared HARQ process; the performing HARQ retransmission with the network side through the target carrier includes: when data transmission is unsuccessful, receiving a scheduling instruction of the network side, wherein the scheduling instruction is used for indicating one or more carriers for carrying out HARQ retransmission, and the one or more carriers comprise the original carrier and/or other carriers sharing an HARQ process with the original carrier; and determining the target carrier from the one or more carriers, and performing HARQ retransmission with the network side through the target carrier by using the shared HARQ process.

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

Optionally, the method further includes: and taking the carrier which preferentially obtains the channel use right in the one or more carriers as the target carrier.

Optionally, the method further includes: and if the channel use weights of a plurality of carriers are acquired simultaneously in the one or more carriers, selecting the carrier with the best channel quality as the target carrier.

Optionally, the shared HARQ process is used to transmit low-latency data, and the method further includes: receiving a mapping relation between a logic channel with low time delay configured by the network side and a shared HARQ process, wherein the logic channel with low time delay is used for transmitting the data with low time delay; and transmitting the data of the low-delay logic channel through the shared HARQ process and the network side.

Optionally, the frequency band in which the device on the network side operates is deployed in an unlicensed spectrum.

Optionally, the method further includes: and carrying out data transmission with the network side simultaneously on a plurality of carriers sharing the HARQ process.

The embodiment of the invention also provides a multi-carrier data transmission method, which comprises the following steps: sending configuration information to UE (user equipment) so that the UE determines a plurality of carriers sharing an HARQ (hybrid automatic repeat request) process according to the configuration information; and carrying out HARQ retransmission with the UE through a target carrier, wherein the target carrier is an original carrier for transmitting data or other carriers sharing an HARQ process with the original carrier.

Optionally, the shared HARQ process occupies a buffer larger than a buffer occupied by the non-shared HARQ process.

Optionally, each carrier indicates the HARQ process identifier by using a different bit number.

Optionally, the sending configuration information to the UE includes: and sending the configuration information to the UE through RRC signaling.

Optionally, before performing HARQ retransmission with the UE through the target carrier, the method further includes: performing data transmission with the UE through the original carrier by using a shared HARQ process; the performing HARQ retransmission with the UE through a 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 by using the shared HARQ process; the scheduling instruction is used for indicating one or more carriers for performing HARQ retransmission, and the one or more carriers comprise the original carrier and/or other carriers sharing an HARQ process with the original carrier.

Optionally, the shared HARQ process is used to transmit low-latency data, and the method further includes: sending a mapping relation between a logic channel configured with low time delay and a shared HARQ process to the UE, wherein the logic channel configured with low time delay is used for transmitting the data with low time delay; and transmitting the data of the low-delay logic channel with the UE through the shared HARQ process.

Optionally, the frequency band in which the device on the network side executes the method operates is deployed in an unlicensed spectrum.

Optionally, the method further includes: and simultaneously carrying out data transmission with the UE on a plurality of carriers sharing the HARQ process.

An embodiment of the present invention further provides a multicarrier data transmission apparatus, where the apparatus includes: a configuration information receiving module, configured to receive configuration information sent by an AP, and determine multiple carriers sharing an HARQ process according to the configuration information; and the first retransmission module is used for carrying out HARQ retransmission with the network side through a target carrier, wherein the target carrier is an original carrier for transmitting data or other carriers sharing an HARQ process with the original carrier.

An embodiment of the present invention further provides a multicarrier data transmission apparatus, where the apparatus includes: a configuration information sending module, configured to send configuration information to a UE, so that the UE determines multiple carriers sharing a HARQ process according to the configuration information; and the second retransmission module is used for carrying out HARQ retransmission with the UE through a target carrier, wherein the target carrier is an original carrier for transmitting data or other carriers sharing an HARQ process with the original carrier.

Embodiments of the present invention further provide a storage medium, on which a computer program is stored, where the computer program is executed by a processor to perform any of the steps of the method.

The embodiment of the present invention further provides a terminal, which includes a memory and a processor, where the memory stores a computer program that can be executed on the processor, and the processor executes any one of the steps of the method when executing the computer program.

An embodiment of the present invention further provides a base station, which includes a memory and a processor, where the memory stores a computer program that is executable on the processor, and the processor executes the steps of any one of the methods when executing the computer program.

An embodiment of the present invention further provides an AP, including a memory and a processor, where the memory stores a computer program executable on the processor, and the processor executes any one of the steps of the method when executing the computer program.

Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:

the embodiment of the invention provides a multi-carrier data transmission method, which comprises the following steps: receiving configuration information sent by a network side, and determining a plurality of carriers sharing an HARQ process according to the configuration information; and carrying out HARQ retransmission with the network side through a target carrier, wherein the target carrier is an original carrier for transmitting data or other carriers sharing an HARQ process with the original carrier. Compared with the prior art, the scheme can ensure that the unsuccessfully transmitted data packet can be transmitted by the original carrier, or can be transmitted by other carriers sharing the HARQ process with the original carrier, and when the channel use right of the original carrier cannot be continuously obtained, the data can also be successfully transmitted by other carriers, thereby solving the time delay problem in the prior art scheme.

Further, when the channel use right of the original carrier cannot be obtained for a long time, the cross-carrier HARQ retransmission of the data can be realized, so that a larger transmission delay is avoided.

Further, when multiple carriers share the HARQ process, the UE may simultaneously perform detection on the multiple carriers, and use the carrier retransmission that first obtains the channel usage right to reduce the transmission delay; and the carrier with good channel quality is selected for retransmission, so that the successful transmission probability is improved.

Further, for the scenario of sharing HARQ process, the UE may perform data transmission with the network side through multiple carriers of the shared HARQ process at the same time, thereby providing a new repetition (duplicate) mechanism. One side of the received data can carry out joint detection on the received data on the multiple carriers so as to judge whether the data transmission is accurate and improve the detection effect.

Drawings

Fig. 1 is a flowchart illustrating a multi-carrier data transmission method according to an embodiment of the present invention;

fig. 2 is a partial flowchart of a multicarrier data transmission method according to an embodiment of the invention;

fig. 3 is a flowchart illustrating another multicarrier data transmission method according to an embodiment of the invention;

fig. 4 is a partial flowchart of another multicarrier data transmission method according to another embodiment of the present invention;

fig. 5 is a schematic structural diagram of a multi-carrier data transmission apparatus according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of another multicarrier data transmission apparatus in the embodiment of the invention.

Detailed Description

As described in the background art, in the current carrier aggregation, an unsuccessfully transmitted data packet can only be transmitted by the original carrier, and when the channel use right is not obtained continuously, the transmission delay is large.

To solve the problem, an embodiment of the present invention provides a multicarrier data transmission method, where the method includes: receiving configuration information sent by a network side, and determining a plurality of carriers sharing an HARQ process according to the configuration information; and carrying out HARQ retransmission with the network side through a target carrier, wherein the target carrier is an original carrier for transmitting data or other carriers sharing an HARQ process with the original carrier.

Therefore, when the channel use right of the original carrier cannot be obtained continuously, data can be successfully transmitted through other carriers, and the problem of time delay in the prior art is solved.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Referring to fig. 1, fig. 1 is a schematic flow chart of a multi-carrier data transmission method according to an embodiment of the present invention, where the method specifically includes the following steps:

step S101, receiving configuration information sent by a network side, and determining a plurality of carriers sharing an HARQ process according to the configuration information;

the network side, that is, the network side device, may be a base station (eNB/gNB) or an access Point (access Point, AP for short).

The configuration information is information sent by a network side to a terminal (also referred to as terminal Equipment or User Equipment (UE for short)), and is used to indicate that two or more carriers share an HARQ process. Two or more carriers sharing a HARQ process may each schedule the shared HARQ process. Optionally, the configuration information may further indicate an identifier of a HARQ process shared by two or more carriers, so that the UE determines which carriers share the HARQ process and which shared HARQ process is which HARQ process or processes.

Optionally, the number of shared HARQ processes is less than or equal to the number of all processes of the multiple carriers. That is, all HARQ processes of the multiple carriers may be configured as shared HARQ processes, or some of all HARQ processes of the multiple carriers may be configured as shared HARQ processes.

For example, the AP manages serving cells with 4 different frequency points, and is denoted as PCell, SCell1, SCell2, and SCell 3. The AP may broadcast a system message or the like on only one carrier so that the UE may camp on, and when the UE has a service requirement to establish RRC connection and enters a connected state, the AP may configure carrier aggregation for the terminal, and at this time, the terminal configures PCell and SCell1, SCell2, SCell 3. The terminal also establishes a signaling radio bearer and a data radio bearer, the AP configures the PCell and the SCell1 of the UE as two carriers sharing the HARQ process through the configuration information, the number of the shared HARQ processes of the PCell and the SCell1 is 16, and an identifier (identity, abbreviated as ID) of the shared HARQ process is 0-15.

Step S102, HARQ retransmission is carried out between the UE and a target carrier, wherein the target carrier is an original carrier for transmitting data or other carriers sharing an HARQ process with the original carrier.

Wherein, the original carrier wave for transmitting data is the previous data transmission. Taking uplink transmission as an example, for the same data packet to be transmitted, if the UE hands it to one carrier for transmission, the UE needs to retransmit if the transmission is unsuccessful. At this time, the carrier used for this transmission is referred to as the original carrier of the transmission data. The carrier for retransmission is referred to as a target carrier, and the target carrier may be an original carrier or another carrier sharing the HARQ process with the original carrier.

In the embodiment of the present invention, since two or more carriers can call a shared HARQ process, if the original carrier calls the shared HARQ process to perform the transmission, the original carrier may call the shared HARQ process to perform retransmission during retransmission, or other carriers that can call the shared HARQ process to perform retransmission.

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

Optionally, the frequency band in which the network side operates is deployed in an unlicensed spectrum.

Generally, an AP provides wireless services in a home or a company, is deployed in an unlicensed spectrum, and provides services for a terminal by using a carrier aggregation mechanism.

The method described in fig. 1 is executed by a terminal, also called terminal Equipment or User Equipment (UE for short). By the scheme, unsuccessfully transmitted data packets can be transmitted by the original carrier, or can be transmitted by other carriers sharing the HARQ process with the original carrier, and when the channel use right of the original carrier cannot be continuously obtained, data can also be successfully transmitted by other carriers, so that the time delay problem in the prior art is solved.

In one embodiment, the shared HARQ process occupies a larger buffer than the non-shared HARQ process.

Wherein, the shared HARQ process is an HARQ process which can be called by more than one carrier. A non-shared HARQ process is a HARQ process that can only be invoked by a single carrier.

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

For example, the Buffer occupied by all 16 HARQ processes is 1 gbit, and if the 16 HARQ processes are all non-shared HARQ processes, the Buffer occupied by each HARQ process is 1/16 gbit. If the 16 HARQ processes are all HARQ processes shared by two carriers, the total Buffer is adjusted to 2G bits, and the Buffer occupied by each HARQ process is 2/16G bits.

If only the Buffer occupied by the HARQ Process is adjusted, for uplink scheduling, the HARQ Process may be indicated by using the bit number of the HARQ Process ID in the existing downlink control signaling (4 bits in the existing downlink control signaling).

In one embodiment, each carrier indicates a HARQ Process identification (HARQ Process ID) by a different number of bits.

Optionally, when the N carriers share M HARQ processes, each shared HARQ process in the M HARQ processes may correspond to N process IDs, so that the N carriers can respectively invoke the shared HARQ processes. For example, when two carriers share 8 HARQ processes, the number of HARQ Process IDs is 24, and the first carrier can schedule HARQ Process IDs of 0 to 15; the second carrier may schedule HARQ process IDs 8-23, where HARQ process IDs 8-15 are shared HARQ processes. In this case, 4 bits of the original HARQ Process ID can be used for indicating HARQ Process IDs 0 to 15 for the first carrier, and one bit needs to be added for indicating the added HARQ Process for the second carrier, that is, 5 bits need to indicate HARQ Process IDs 8 to 23.

In an embodiment, please refer to fig. 2, fig. 2 is a partial flowchart of another multi-carrier data transmission method according to an embodiment of the present invention, and before performing HARQ retransmission with the network side through a target carrier in step S102 in fig. 1, the method further includes: step S201, using shared HARQ process to transmit data with the network side through the original carrier;

step S102, performing HARQ retransmission with the network side through the target carrier includes: step S202, detecting whether the data transmission is successful; when the data transmission is unsuccessful, executing step S203, receiving a scheduling instruction of 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 other carriers sharing an HARQ process with the original carrier; step S204, the target carrier is determined from the one or more carriers, and HARQ retransmission is carried out between the target carrier and the network side by using the shared HARQ process. Optionally, when the data transmission is successful, the data transmission is finished.

For one-time transmission, when the UE invokes a shared HARQ process to perform data transmission with the network side through the original carrier, if the transmission is unsuccessful, and if the UE can acquire the channel usage right of the original carrier, the AP schedules the original carrier to perform data retransmission. If the transmission is unsuccessful and the UE cannot continuously obtain the channel use right of the original carrier within a period of time, the AP schedules other carriers sharing the HARQ process with the original carrier to retransmit the data.

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

As in the above example, the AP configures the PCell and the SCell1 of the UE as two carriers sharing the HARQ process through the configuration information, when the AP schedules the UE on the PCell to perform UpLink (UpLink, UL) transmission, after obtaining the usage right of the channel, the UE selects or intercepts data of a corresponding length according to the size of the data amount that can be transmitted, and performs transmission through the UL PCell, assuming that the UE performs first transmission of data through the HARQ process 1 at this time, and the transmitted data is stored in the Buffer of the HARQ process 1. Wherein, HARQ process 1 is a shared HARQ process. After the UE uses the PCell to perform the transmission, the UE receives feedback information sent by the AP through the downlink control signaling, and when the transmission is unsuccessful, the AP may schedule the UE to perform retransmission, but then the UE may not continuously obtain the channel use right on the UL PCell, resulting in unsuccessful uplink transmission. Because the UE applies the shared HARQ process, the AP may schedule the UE to retransmit on SCell1 through downlink control signaling on PCell or downlink control signaling on SCell1, and the terminal performs LBT on SCell1, and if successfully obtaining the channel usage right, may retransmit the Buffer data in HARQ process 1 to the AP through SCell 1. Then, the UE receives feedback sent by the AP, and if the transmission is successful, the UE can clear the HARQ process 1; if the transmission is still unsuccessful, the UE may wait for uplink scheduling by the AP before the maximum number of retransmissions is not reached, and retransmit the unsuccessfully transmitted packet again through the PCell or SCell 1.

The carrier scheduling for downlink transmission is similar to that for uplink transmission and will not be described in detail here. By the method, when the channel use right of the original carrier cannot be obtained for a long time, the cross-carrier HARQ retransmission of the data can be realized, so that larger transmission delay is avoided.

In one embodiment, the method further comprises: and taking the carrier which preferentially obtains the channel use right in the one or more carriers as the target carrier.

When the network side indicates the uplink authorization allocated on a plurality of carriers through the scheduling instruction, the UE simultaneously detects on the plurality of carriers and takes the carrier preferentially obtaining the channel use right as a target carrier. The carrier with the best channel quality is the carrier with the best channel quality in the channel use rights for simultaneously acquiring a plurality of carriers.

In this embodiment, when multiple carriers share the HARQ process, the UE may simultaneously perform detection on the multiple carriers, and use carrier retransmission in which the channel usage right is obtained first, so as to reduce transmission delay; and the carrier with good channel quality is selected for retransmission, so that the successful transmission probability is improved.

In one embodiment, the shared HARQ process is used for transmitting low latency data, the method further comprising: receiving a mapping relation between a logic channel with low time delay configured by the network side and a shared HARQ process, wherein the logic channel with low time delay is used for transmitting the data with low time delay; and transmitting the data of the low-delay logic channel through the shared HARQ process and the network side.

The data with low time delay is data with high real-time requirement, and can be configured by a network side. Optionally, the data with low time delay is data of a preset service with low requirement on a time delay value. In contrast, the non-shared HARQ process is used for transmitting data of a general service.

And the network side configures the mapping relation between the low-delay logical channel and the shared HARQ process, and after receiving the mapping relation, the UE transmits the data of the logical channel configured with the mapping relation through the shared HARQ process.

In one embodiment, the method further comprises: and carrying out data transmission with the network side simultaneously on a plurality of carriers sharing the HARQ process.

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, one side for receiving data is a network side; during downlink transmission, the side receiving data is the UE side.

For the scenario of sharing HARQ process, the base station may schedule the UE to uplink the same tb (transport block) on two carriers at the same time, and provide a new duplicate mechanism. Optionally, when data is initially transmitted or retransmitted, the base station may schedule the UE to transmit the same TB on multiple carriers sharing the HARQ process at the same time.

Further, the base station can schedule the UE to perform uplink transmission on two carriers simultaneously through one downlink control signaling, because the base station configures the carrier sharing the HARQ process through the RRC signaling in advance, and after the base station configures repetition (duplicate), the UE sends the same TB on the carrier corresponding to the shared HARQ process, at this time, the downlink control signaling does not need to indicate uplink carrier information, 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, so that the detection effect is improved.

In this embodiment, for a scenario of sharing an HARQ process, the UE may perform data transmission with the network side through multiple carriers sharing the HARQ process at the same time, so as to provide a new repetition mechanism. One side receiving data can carry out joint detection on the received data on the multiple carriers so as to judge whether the data transmission is accurate and improve the detection effect.

Referring to fig. 3, fig. 3 is a schematic flow chart of another multicarrier data transmission method according to an embodiment of the present invention, where the method includes:

step S301, sending configuration information to UE, so that the UE determines a plurality of carriers sharing HARQ processes according to the configuration information;

step S302, HARQ retransmission is carried out between the UE and a target carrier, wherein the target carrier is an original carrier for transmitting data or other carriers sharing an HARQ process with the original carrier.

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

In one embodiment, before performing HARQ retransmission with the UE through the target carrier, the method further includes:

step S401, using shared HARQ process to transmit data with the UE through the original carrier;

the performing HARQ retransmission with the UE through a target carrier includes:

step S402, when the data transmission is unsuccessful, a scheduling instruction is sent to the UE so that the UE determines the target carrier;

step S403, using the shared HARQ process to perform HARQ retransmission with the UE through the target carrier;

the scheduling instruction is used for indicating one or more carriers for performing HARQ retransmission, and the one or more carriers include the original carrier and/or other carriers sharing a HARQ process with the original carrier.

The methods described in fig. 3 and 4 are performed by a network side device, such as a base station or AP. For more contents of the working principle and the working mode of the method described in fig. 3 or fig. 4, reference may be made to the related description about the network side or the AP in fig. 1 and fig. 2, which is not described herein again.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a multi-carrier data transmission apparatus according to an embodiment of the present invention, where the multi-carrier data transmission apparatus 50 includes:

a configuration information receiving module 501, configured to receive configuration information sent by an AP, and determine multiple carriers sharing an HARQ process according to the configuration information;

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

For more contents of the operation principle and the operation manner of the multicarrier data transmission apparatus 50, reference may be made to the description related to the method in fig. 1 and fig. 2, and details are not repeated here.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a multicarrier data transmission apparatus according to an embodiment of the present invention, where the multicarrier data transmission apparatus 60 includes:

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

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

For more details on the operation principle and the operation mode of the multicarrier data transmission apparatus 60, reference may be made to the description of the methods in fig. 3 and fig. 4, and details are not repeated here.

An embodiment of the present invention further provides a storage medium, on which a computer program is stored, where the computer program is executed by a processor to perform the method described in any one of fig. 1 to 2 or the steps of the method described in fig. 3 to 4. The storage medium may be a computer-readable storage medium, and may include, for example, a non-volatile (non-volatile) or non-transitory (non-transitory) memory, and may further include an optical disc, a mechanical hard disk, a solid state hard disk, and the like.

The embodiment of the invention also provides a terminal, which can be UE. The terminal may comprise a memory having stored thereon a computer program operable on the processor, and a processor that, when executing the computer program, performs the steps of the method of fig. 1-2.

An embodiment of the present invention further provides a base station or AP, including a memory and a processor, where the memory stores a computer program executable on the processor, and the processor executes the steps of the method in fig. 3 to 4 when executing the computer program.

Definitions or descriptions of commonly used words:

the technical solution of the present invention can be applied to 5G (5Generation) communication systems, 4G and 3G communication systems, and various future communication systems, such as 6G and 7G.

The network side (network) in the embodiment of the present invention refers to a communication network providing communication services for a terminal, and includes a base station of a radio access network, a base station controller of the radio access network, and a device on a core network side.

A terminal in this embodiment may refer to various forms of User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station (mobile station, MS), a remote station, a remote terminal, a mobile device, a user terminal, a terminal device (terminal equipment), a wireless communication device, a user agent, or a user equipment. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a Wireless communication function, a computing device or other processing devices connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which is not limited in this embodiment.

In the embodiments of the present application, a unidirectional communication link from an access network to a terminal is defined as a downlink, data transmitted on the downlink is downlink data, and a transmission direction of the downlink data is referred to as a downlink direction; the unidirectional communication link from the terminal to the access network is an uplink, the data transmitted on the uplink is uplink data, and the transmission direction of the uplink data is referred to as an uplink direction.

It should be understood that the term "and/or" is only one type of association describing an associated object herein, indicating that three relationships may exist, for example, a and/or B, may indicate: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this document indicates that the former and latter related objects are in an "or" relationship.

"plurality" appearing in the embodiments of the present application means two or more.

The descriptions of the first, second, etc. appearing in the embodiments of the present application are for illustrative purposes and for distinguishing the objects of description, and do not indicate any particular limitation on the number of devices in the embodiments of the present application, and do not constitute any limitation on the embodiments of the present application.

"connect" in the embodiments of the present application refers to various connection manners, such as direct connection or indirect connection, to implement communication between devices, which is not limited in this embodiment of the present application.

It should be understood that, in the embodiments of the present application, the processor may be a Central Processing Unit (CPU), and the processor may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be understood that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example and not limitation, many forms of Random Access Memory (RAM) are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM), SDRAM (SLDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DR RAM).

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications can be easily made by those skilled in the art without departing from the spirit and scope of the present invention, and it is within the scope of the present invention to include different functions, combination of implementation steps, software and hardware implementations.

Claims

1. A method for multi-carrier data transmission, the method comprising:

receiving configuration information sent by a network side, and determining a plurality of carriers sharing an HARQ process according to the configuration information;

and carrying out HARQ retransmission with the network side through a target carrier, wherein the target carrier is an original carrier for transmitting data or other carriers sharing an HARQ process with the original carrier.

2. The method of claim 1, wherein the shared HARQ process occupies a buffer that is larger than a buffer occupied by the non-shared HARQ process.

3. The method of claim 1, wherein each carrier indicates HARQ process identity by a different number of bits.

4. The method of claim 1, wherein the number of shared HARQ processes is less than or equal to the number of all HARQ processes of the plurality of carriers.

5. The method according to any of claims 1 to 4, wherein the configuration information is sent by RRC signalling.

6. The method of claim 1, wherein before performing HARQ retransmission with the network side via the target carrier, the method further comprises:

performing data transmission with the network side through the original carrier by using a shared HARQ process;

the performing HARQ retransmission with the network side through the target carrier includes:

when data transmission is unsuccessful, receiving a scheduling instruction of the network side, wherein the scheduling instruction is used for indicating one or more carriers for HARQ retransmission, and the one or more carriers comprise the original carrier and/or other carriers sharing an HARQ process with the original carrier;

and determining the target carrier from the one or more carriers, and performing HARQ retransmission with the network side through the target carrier by using the shared HARQ process.

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

8. The method of claim 6, further comprising:

and taking the carrier which preferentially obtains the channel use right in the one or more carriers as the target carrier.

9. The method of claim 8, further comprising:

and if the channel use weights of a plurality of carriers are acquired simultaneously in the one or more carriers, selecting the carrier with the best channel quality as the target carrier.

10. The method of claim 1, wherein the shared HARQ process is used for transmitting low latency data, the method further comprising:

receiving a mapping relation between a logic channel with low time delay configured by the network side and a shared HARQ process, wherein the logic channel with low time delay is used for transmitting the data with low time delay;

and transmitting the data of the low-delay logic channel through the shared HARQ process and the network side.

11. The method of claim 1, wherein a frequency band in which the device on the network side operates is deployed in an unlicensed spectrum.

12. The method of claim 1, further comprising:

and carrying out data transmission with the network side simultaneously on a plurality of carriers sharing the HARQ process.

13. A method for multi-carrier data transmission, the method comprising:

sending configuration information to UE (user equipment) so that the UE determines a plurality of carriers sharing an HARQ (hybrid automatic repeat request) process according to the configuration information;

and carrying out HARQ retransmission with the UE through a target carrier, wherein the target carrier is an original carrier for transmitting data or other carriers sharing an HARQ process with the original carrier.

14. The method of claim 13, wherein the shared HARQ process occupies a buffer that is larger than a buffer occupied by the non-shared HARQ process.

15. The method of claim 13, wherein each carrier indicates HARQ process identity by a different number of bits.

16. The method of claim 13, wherein the number of shared HARQ processes is less than or equal to the number of all HARQ processes of the plurality of carriers.

17. The method according to any of claims 13 to 16, wherein said sending configuration information to the UE comprises:

and sending the configuration information to the UE through RRC signaling.

18. The method of claim 13, wherein before performing HARQ retransmission with the UE via the target carrier, further comprising:

performing data transmission with the UE through the original carrier by using a shared HARQ process;

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 by using the shared HARQ process;

19. The method according to claim 18, wherein the scheduling command comprises a downlink control command of the original carrier and/or a downlink control command of the target carrier.

20. The method of claim 18, wherein the shared HARQ process is configured to transmit low latency data, the method further comprising:

sending a mapping relation between a logic channel configured with low time delay and a shared HARQ process to the UE, wherein the logic channel configured with low time delay is used for transmitting the data with low time delay;

and transmitting the data of the low-delay logic channel with the UE through the shared HARQ process.

21. The method of claim 13, wherein a frequency band in which a device on a network side performs the method operates is deployed in an unlicensed spectrum.

22. The method of claim 13, further comprising:

and simultaneously carrying out data transmission with the UE on a plurality of carriers sharing the HARQ process.

23. A multi-carrier data transmission apparatus, characterized in that the apparatus comprises:

a configuration information receiving module, configured to receive configuration information sent by an AP, and determine multiple carriers sharing an HARQ process according to the configuration information;

and the first retransmission module is used for carrying out HARQ retransmission with the network side through a target carrier, wherein the target carrier is an original carrier for transmitting data or other carriers sharing an HARQ process with the original carrier.

24. A multi-carrier data transmission apparatus, characterized in that the apparatus comprises:

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

and the second retransmission module is used for carrying out HARQ retransmission with the UE through a target carrier, wherein the target carrier is an original carrier for transmitting data or other carriers sharing an HARQ process with the original carrier.

25. A storage medium having a computer program stored thereon, the computer program, when executed by a processor, performing the method of any of claims 1 to 12 or the steps of the method of any of claims 13 to 22.

26. A terminal comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor, when executing the computer program, performs the steps of the method of any of claims 1 to 12.

27. A base station comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor, when executing the computer program, performs the steps of the method of any of claims 13 to 22.

28. An AP comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor, when executing the computer program, performs the steps of the method of any one of claims 13 to 22.