TWI751263B - Method and device for harq process configuration and apparatus - Google Patents

Abstract

A configuration method, device and device for a Hybrid Automatic Repeat reQuest (HARQ) process, relating to the technical field of communications, the method comprising: configuring the number n of HARQ processes for a terminal; The HARQ process is allocated to the carrier currently supported by the terminal, where n≥m≥1, and both n and m are positive integers. The implementation of the present application helps to reduce the HARQ buffering overhead of the terminal, and improves the flexibility of HARQ process configuration and scheduling.

Description

HARQ process configuration method, device and device

Embodiments of the present invention relate to the field of communication technologies, and in particular, to a configuration method, apparatus, and device for a hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) process.

HARQ is a technology that combines Forward Error Correction (FEC) and Automatic Repeat reQuest (ARQ). Using HARQ technology, when the receiver fails to decode the received data, it does not discard the received data, but saves the received data and asks the sender to retransmit the data, and the receiver will retransmit the data. The data is merged with previously received data and then decoded. In the above manner, a certain diversity gain can exist, the number of retransmissions is reduced, and the data transmission delay is further reduced.

The data transmission in the Long Term Evolution (Long Term Evolution, LTE) system adopts the HARQ technology. The number of HARQ processes in the terminal is configured by the network side. The number of HARQ processes refers to the number of concurrent HARQ processes. A HARQ process refers to a complete data transmission process. The HARQ process configuration scheme in the LTE system is as follows: the network side configures a fixed number of HARQ processes corresponding to the carriers supported by the terminal, for example, the fixed number of HARQ processes is 8.

Taking the Carrier Aggregation (CA) scenario in the LTE system as an example, the relevant method for configuring the number of HARQ processes on the network side is as follows: The network side configures an independent HARQ entity (entity) for each carrier aggregated by the terminal, that is, the terminal Each aggregated carrier has a fixed number of HARQ processes and independent HARQ scheduling. The above design is mainly taken into consideration that in the LTE system, each aggregated carrier has the same parameter set (numerology), that is, has the same Transmission Time Interval (TTI), when HARQ operation is performed on each carrier , HARQ can have the same round trip delay (Round Trip Time, RTT). Therefore, the HARQ parameters corresponding to each carrier aggregated by the terminal are consistent, for example, the network side configures a corresponding HARQ entity including 8 HARQ processes for each carrier aggregated by the terminal.

In the HARQ process configuration scheme provided in the prior art, the network side configures a fixed number of HARQ processes corresponding to the carriers supported by the terminal, which has the problem of low flexibility in HARQ process configuration and scheduling.

In order to solve the problem of low flexibility in the configuration and scheduling of the HARQ process in the prior art, the embodiments of the present invention provide a configuration method, apparatus and device for the HARQ process. The technical solution is as follows:

On the one hand, an embodiment of the present invention provides a method for configuring a HARQ process, the method comprising:

Configure the number of HARQ processes n for the terminal;

Allocating m HARQ processes among the n HARQ processes to the carriers currently supported by the terminal, where n≥m≥1, and both n and m are positive integers.

In a possible design, the carriers currently supported by the terminal include multiple carriers aggregated by the terminal.

Optionally, the sum of the number of HARQ processes allocated to each carrier aggregated by the terminal is the m, and among the carriers aggregated by the terminal, there are at least two carriers that are allocated the same or different number of HARQ processes.

Optionally, the allocating m HARQ processes among the n HARQ processes to the carrier currently supported by the terminal includes:

acquiring characteristic information of each carrier aggregated by the terminal;

According to the characteristic information of each carrier aggregated by the terminal, m HARQ processes among the n HARQ processes are allocated to each carrier aggregated by the terminal.

Optionally, the characteristic information of the carrier includes at least one of the following: a basic parameter set used by the carrier, a main service type borne by the carrier, and a frequency band where the carrier is located.

In a possible design, the number of carriers currently supported by the terminal is 1, and the carriers are multiplexed with multiple groups of different basic parameter sets, and each group of basic parameter sets includes a group of time-frequency resource configuration parameters.

Optionally, the allocating m HARQ processes among the n HARQ processes to the carrier currently supported by the terminal includes:

According to the basic parameter set currently used by the carrier currently supported by the terminal, m HARQ processes among the n HARQ processes are allocated to the carrier currently supported by the terminal.

In a possible design, the number n of HARQ processes configured for the terminal includes:

obtain characteristic information of the terminal;

According to the characteristic information of the terminal, the number n of HARQ processes is configured for the terminal.

Optionally, the characteristic information of the terminal includes at least one of the following: the HARQ buffer capacity of the terminal, the data processing capability of the terminal, the number of each carrier aggregated by the terminal, and the characteristics of each carrier aggregated by the terminal , the main service type requested by the terminal.

In a possible design, the number n of HARQ processes configured for the terminal includes:

From the predefined at least one candidate HARQ process number, select one candidate HARQ process number to configure for the terminal.

In a possible design, after allocating m HARQ processes among the n HARQ processes to the carriers currently supported by the terminal, the method further includes:

When the carrier currently supported by the terminal changes, the number of HARQ processes allocated for the carrier currently supported by the terminal is adjusted.

Optionally, after adjusting the number of HARQ processes allocated to the carriers currently supported by the terminal, the method further includes:

Send downlink control information (Downlink Control Information, DCI) to the terminal, where the DCI carries HARQ configuration information, and the HARQ configuration information is used to indicate the number of HARQ processes allocated for the carrier currently supported by the terminal.

On the other hand, an embodiment of the present invention also provides an apparatus for configuring a HARQ process with a hybrid automatic repeat request, wherein the apparatus includes:

a processing unit for configuring the number n of HARQ processes for the terminal;

The processing unit is further configured to allocate m HARQ processes among the n HARQ processes to the carriers currently supported by the terminal, wherein n≥m≥1, and both n and m are positive integers.

As an optional implementation manner, the carriers currently supported by the terminal include multiple carriers aggregated by the terminal.

As an optional implementation manner, the sum of the number of HARQ processes allocated to each carrier aggregated by the terminal is the m, and among the carriers aggregated by the terminal, there are at least two carriers that are allocated the same number of HARQ processes or different.

As an optional implementation manner, the processing unit is used for:

acquiring characteristic information of each carrier aggregated by the terminal;

According to the characteristic information of each carrier aggregated by the terminal, m HARQ processes among the n HARQ processes are allocated to each carrier aggregated by the terminal.

As an optional implementation manner, the characteristic information of the carrier includes at least one of the following: a basic parameter set used by the carrier, a main service type borne by the carrier, and a frequency band where the carrier is located.

As an optional implementation manner, the number of carriers currently supported by the terminal is 1, and the carriers multiplex multiple groups of different basic parameter sets, and each group of basic parameter sets includes a group of time-frequency resource configuration parameters.

As an optional implementation manner, the processing unit is used for:

According to the basic parameter set currently used by the carrier currently supported by the terminal, m HARQ processes among the n HARQ processes are allocated to the carrier currently supported by the terminal.

As an optional implementation manner, the processing unit is used for:

obtain characteristic information of the terminal;

According to the characteristic information of the terminal, the number n of HARQ processes is configured for the terminal.

As an optional implementation manner, the characteristic information of the terminal includes at least one of the following: HARQ buffer capacity of the terminal, data processing capability of the terminal, the number of each carrier aggregated by the terminal, and the number of carriers aggregated by the terminal. The characteristics of each carrier, and the main service type requested by the terminal.

As an optional implementation manner, the processing unit is used for:

From the predefined at least one candidate HARQ process number, select one candidate HARQ process number to configure for the terminal.

As an optional implementation manner, the processing unit is further configured to adjust the number of HARQ processes allocated for the carrier currently supported by the terminal when the carrier currently supported by the terminal changes.

As an optional implementation manner, the device further includes:

A sending unit, configured to send a downlink control message DCI to the terminal, where the DCI carries a HARQ configuration message, and the HARQ configuration message is used to indicate the number of HARQ processes allocated for the carrier currently supported by the terminal.

On the other hand, an embodiment of the present invention provides an access network device, where the access network device has the function of implementing the foregoing method example. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

In a possible design, the structure of the access network device includes a processor, a transmitter and a receiver, and the processor is configured to support the access network device to perform the corresponding functions in the above method. The transmitter and receiver are used to support communication between the access network equipment and the terminal. Further, the access network device may further include a memory, which is used for coupling with the processor, and which stores necessary program instructions and data of the access network device.

As an optional implementation manner, an access network device, wherein the access network device includes:

The processor is used to configure the number n of HARQ processes for the terminal;

The processor is further configured to allocate m HARQ processes among the n HARQ processes to the carriers currently supported by the terminal, wherein n≥m≥1, and both n and m are positive integers.

As an optional implementation manner, the carriers currently supported by the terminal include multiple carriers aggregated by the terminal.

As an optional implementation manner, the sum of the number of HARQ processes allocated to each carrier aggregated by the terminal is the m, and among the carriers aggregated by the terminal, there are at least two carriers that are allocated the same number of HARQ processes or different.

As an optional implementation manner, the processor is configured to:

acquiring characteristic information of each carrier aggregated by the terminal;

According to the characteristic information of each carrier aggregated by the terminal, m HARQ processes among the n HARQ processes are allocated to each carrier aggregated by the terminal.

As an optional implementation manner, the characteristic information of the carrier includes at least one of the following: a basic parameter set used by the carrier, a main service type borne by the carrier, and a frequency band where the carrier is located.

As an optional implementation manner, the number of carriers currently supported by the terminal is 1, and the carriers multiplex multiple groups of different basic parameter sets, and each group of basic parameter sets includes a group of time-frequency resource configuration parameters.

As an optional implementation manner, the processor is configured to:

According to the basic parameter set currently used by the carrier currently supported by the terminal, m HARQ processes among the n HARQ processes are allocated to the carrier currently supported by the terminal.

As an optional implementation manner, the processor is configured to:

obtain characteristic information of the terminal;

According to the characteristic information of the terminal, the number n of HARQ processes is configured for the terminal.

As an optional implementation manner, the characteristic information of the terminal includes at least one of the following: HARQ buffer capacity of the terminal, data processing capability of the terminal, the number of each carrier aggregated by the terminal, and the number of carriers aggregated by the terminal. The characteristics of each carrier, and the main service type requested by the terminal.

As an optional implementation manner, the processor is configured to:

From the predefined at least one candidate HARQ process number, select one candidate HARQ process number to configure for the terminal.

As an optional implementation manner, the processor is further configured to adjust the number of HARQ processes allocated for the carrier currently supported by the terminal when the carrier currently supported by the terminal changes.

As an optional implementation manner, the access network device further includes:

a transmitter, configured to send a downlink control message DCI to the terminal, where the DCI carries a HARQ configuration message, and the HARQ configuration message is used to indicate the number of HARQ processes allocated for the carrier currently supported by the terminal.

In another aspect, an embodiment of the present invention provides a computer storage medium for storing the computer software instructions used for the above-mentioned access network device, which includes the program designed for executing the above-mentioned aspects.

The solution provided by the embodiment of the present invention solves the configuration of HARQ processes in the prior art by configuring the number of HARQ processes n for the terminal, and assigning m HARQ processes among the n HARQ processes to one or more carriers currently supported by the terminal; and less flexibility in scheduling. Since the network side configures the number of HARQ processes for each terminal, in the carrier aggregation scenario, each carrier aggregated by the terminal can share the above n HARQ processes, and the network side can dynamically adjust the number of HARQ processes allocated for each carrier aggregated by the terminal. This improves the flexibility of HARQ process configuration and scheduling, and helps reduce the HARQ buffering overhead of the terminal; in a non-carrier aggregation scenario, one carrier supported by the terminal can multiplex multiple different sets of basic parameters. The basic parameter set of the carrier can share the above n HARQ processes. When the basic parameter set supported by the carrier changes, the network side can dynamically adjust the number of HARQ processes allocated for the carrier, thereby improving the flexibility of HARQ process configuration and scheduling.

In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the drawings.

The network architecture and service scenarios described in the embodiments of the present invention are for the purpose of illustrating the technical solutions of the embodiments of the present invention more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present invention. With the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided by the embodiments of the present invention are also applicable to similar technical problems.

Please refer to FIG. 1 , which shows a schematic diagram of an application scenario provided by an embodiment of the present invention. The application scenario includes: an access network device 110 and at least one terminal 120 .

As shown in FIG. 1 , the number of terminals 120 is usually multiple, and the multiple terminals 120 are located in the community managed by the access network device 110 . The access network device 110 and the terminal 120 communicate with each other through a certain air interface technology, for example, they can communicate with each other through a cellular technology. The technical solutions described in the embodiments of the present invention may be applicable to the LTE system, and may also be applicable to the subsequent evolution systems of the LTE system, such as the LTE-A (LTE-Advanced) system, the 5th Generation (5th Generation, 5G) system, and the like.

In the embodiments of the present invention, the terms "network" and "system" are often used interchangeably, but those with ordinary knowledge in the technical field can understand their meanings. The terminals involved in the embodiments of the present invention may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to wireless modems, as well as various forms of user equipment (User Equipment , UE), mobile station (Mobile Station, MS), terminal device (terminal device) and so on. For the convenience of description, the devices mentioned above are collectively referred to as terminals. The access network device involved in the embodiment of the present invention is a device deployed in a wireless access network to provide a wireless communication function for a terminal, and the access network device is generally referred to as a base station (Base Station, BS). The base stations may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different radio access technologies, the names of devices with base station functions may be different. For example, in LTE systems, they are called evolved NodeBs (evolved NodeBs, eNBs or eNodeBs). For convenience of description, in this embodiment of the present invention, the above-mentioned apparatuses for providing a wireless communication function for a terminal are collectively referred to as access network equipment.

With the development and evolution of the communication system, the communication system needs to support multiple sets of different basic parameter sets (numerology), and different basic parameter sets can be supported on the same carrier or on different carriers. Each set of basic parameter sets includes a set of time-frequency resource configuration parameters, and the time-frequency resource configuration parameters corresponding to different basic parameter sets are different. Generally speaking, different basic parameter sets can be distinguished by using different subcarrier spacings, for example, the subcarrier spacings corresponding to different basic parameter sets are 15 kHz, 30 kHz, 60 kHz, 120 kHz, and so on, respectively. For example, the basic parameter set corresponding to 15kHz can be used as the reference basic parameter set. In the time domain, a 1ms subframe (subframe) includes two time slots (slots), and each time slot contains an orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing) The number of Frequency Division Multiplexing, OFDM) symbols is 7 or 14 (subject to further discussion and determination by relevant standards organizations); in the frequency domain, a resource block (Resource Block, RB) contains 12 subcarriers. The subcarrier spacing corresponding to other basic parameter sets can be 15kHz×2n (n is a non-negative integer). In the time domain, the number of time slots included in a subframe is 2n times the number of time slots corresponding to the reference basic parameter set , in the frequency domain, one resource block still contains 12 subcarriers. For example, when n=1, it can be calculated that the subcarrier interval corresponding to the basic parameter set is 30 kHz, and the number of time slots included in one subframe is 4.

For the case where multiple groups of different basic parameter sets are multiplexed on the same carrier, the corresponding multiplexing manner may be a time division multiplexing (Time Division Multiplexing, TDM) manner or a frequency division multiplexing (Frequency Division Multiplexing, FDM) manner. The time-division multiplexing mode refers to multiplexing of different basic parameter sets in the time domain, that is, different basic parameter sets are used in different time periods. Frequency division multiplexing means that different basic parameter sets are multiplexed in the frequency domain, that is, different basic parameter sets are used in different frequency bands.

In the embodiment of the present invention, the network side correspondingly configures an independent HARQ entity for each terminal, the HARQ entity includes n HARQ processes, and n is a positive integer. In the carrier aggregation scenario, each carrier aggregated by the terminal can share the above n HARQ processes, and the network side can dynamically adjust the number of HARQ processes allocated for each carrier aggregated by the terminal, thereby improving the flexibility of HARQ process configuration and scheduling. In a non-carrier aggregation scenario, a carrier supported by a terminal can reuse multiple sets of different basic parameter sets, and the multiple sets of different basic parameter sets can share the above n HARQ processes. When the basic parameter set supported by the carrier changes , the network side can dynamically adjust the number of HARQ processes allocated for the carrier, thereby improving the flexibility of HARQ process configuration and scheduling.

The following will further describe the embodiments of the present invention in detail based on the common aspects involved in the above-mentioned embodiments of the present invention.

Please refer to FIG. 2 , which shows a flowchart of a method for configuring a HARQ process provided by an embodiment of the present invention. The method may include the following steps:

Step 201 , configure the number n of HARQ processes for the terminal, where n is a positive integer.

The access network device configures the number of HARQ processes for the terminal. In this embodiment, the number of HARQ processes configured for the terminal is represented by n. The access network device configures a HARQ entity for the terminal, and the HARQ entity includes n HARQ processes. In the carrier aggregation scenario, each carrier aggregated by the terminal can share the above n HARQ processes. In a non-carrier aggregation scenario, one carrier supported by the terminal can multiplex multiple different groups of basic parameter sets, and the multiple groups of different basic parameter sets can share the above n HARQ processes.

The HARQ process included in the HARQ entity configured for the terminal above may be referred to as a common HARQ process. For the carrier aggregation scenario, the common HARQ process refers to the HARQ process shared by each carrier aggregated by the terminal. For a non-carrier aggregation scenario, a common HARQ process refers to a HARQ process shared by multiple groups of different basic parameter sets supported by a carrier. Correspondingly, the access network device configures the number of public HARQ processes for the terminal, and the number of public HARQ processes refers to the number of public HARQ processes, and is represented by n, for example.

Optionally, the access network device configures the number of HARQ processes for the terminal during the process of establishing a radio resource control (Radio Resource Control, RRC) connection with the terminal or after establishing the RRC connection.

Optionally, this step includes the following sub-steps:

1. Obtain the characteristic information of the terminal;

2. According to the characteristic information of the terminal, configure the number n of HARQ processes for the terminal.

The characteristic information of the terminal refers to information for indicating the characteristic of the terminal. Exemplarily, the characteristic information of the terminal includes at least one of the following: HARQ buffer capacity of the terminal, data processing capability of the terminal, number of each carrier aggregated by the terminal, characteristics of each carrier aggregated by the terminal, and main service type requested by the terminal.

Optionally, the access network device acquires the characteristic information of the terminal during the process of establishing the RRC connection with the terminal or after the RRC connection is established. The characteristic information of the terminal can be actively reported to the access network device by the terminal, or reported after the access network device sends an instruction to the terminal, or the access network device can obtain it by itself according to the configuration information of the communication system.

In an example, the characteristic information of the terminal is taken as the HARQ buffer capacity of the terminal as an example. The HARQ buffer capacity of the terminal refers to the maximum buffer capacity corresponding to the HARQ buffer of the terminal. The access network device determines the number n of HARQ processes configured for the terminal according to the HARQ buffer capacity of the terminal and the buffer capacity required by each HARQ process. For example, if the HARQ buffer capacity of the terminal is M (bits), and the buffer capacity required for each HARQ process is N (bits), the number n of HARQ processes configured by the access network device for the terminal can be [M/N]; , the symbol "[ ]" means round down. The above example only takes the same buffer capacity required by each HARQ process as an example, and in actual situations, the buffer capacity required by each HARQ process may also be different.

In another example, the characteristic information of the terminal is taken as the data processing capability of the terminal as an example. The data processing capability of the terminal refers to the minimum processing time from when the terminal receives the downlink data sent by the access network device until the terminal returns a success or failure response to the access network device. The access network device determines the number n of HARQ processes configured for the terminal according to the data processing capability of the terminal and the load state of the access network device. For example, the minimum processing time determined according to the data processing capability of the terminal is a (ms), the retransmission processing time determined according to the load status of the access network equipment is b (ms), and the access network equipment according to the above minimum processing time a and the retransmission processing time b to determine the number n of HARQ processes configured for the terminal. Exemplarily, the number of HARQ processes configured for the terminal is n=(a+b)/TTI, where TTI represents the TTI corresponding to the carrier aggregated by the terminal.

In yet another example, the characteristic information of the terminal includes the number of each carrier aggregated by the terminal and the characteristics of each carrier aggregated by the terminal as an example. For each carrier aggregated by the terminal, the access network device determines the number of HARQ processes corresponding to the carrier according to the characteristics of the carrier, and adds the number of HARQ processes corresponding to each carrier to obtain the number n of HARQ processes configured for the terminal. The characteristics of the carrier include at least one of the following: TTI corresponding to the carrier, and service type borne by the carrier. For example, the number of carriers aggregated by the terminal is 2, the TTI corresponding to one carrier is 0.25ms, the number of HARQ processes configured by the access network equipment for this carrier is 3, the TTI corresponding to the other carrier is 1ms, and the access network equipment is The number of HARQ processes configured corresponding to the carrier is 8, and the number of HARQ processes configured by the access network device for the terminal is 11.

In yet another example, the characteristic information of the terminal includes the main service type requested by the terminal as an example. Exemplarily, the service types include enhanced Mobile Broadband (eMBB) services, massive Machine-type Communication (mMTC) services, Ultra-relaible and Low Latency Communication (Ultra-relaible and Low Latency Communication, URLLC) services, etc. When there is only one service type requested by the terminal, this service type is the main service type requested by the terminal; when the service type requested by the terminal is multiple, the service type with the largest service volume among the multiple service types is used as the terminal The main type of service requested. For example, if the main service type requested by the terminal is a delay-sensitive service (such as URLLC service), the access network device configures a smaller number of HARQ processes for the terminal; if the main service type requested by the terminal is a delay-tolerant service service (such as eMBB service), the access network device configures more HARQ processes for the terminal. In practical applications, the access network device may pre-store a first correspondence relationship, where the first correspondence relationship includes correspondence between different service types and different HARQ process numbers, and the access network device queries the above first correspondence relationship to determine The number of HARQ processes configured for the terminal.

The above describes that the access network device configures the number n of HARQ processes for the terminal according to the characteristic information of the terminal. In other possible embodiments, at least one candidate HARQ process number may be predefined (Pre-determined) in the access network device. For example, a set of candidate HARQ process numbers is configured in the access network device, and the set includes several candidate HARQ process numbers such as 6, 8, 10, and 12. The access network device selects one candidate HARQ process number from the predefined at least one candidate HARQ process number (that is, the above-mentioned candidate HARQ process number set) and configures it for the terminal.

In addition, the access network device may send the number n of HARQ processes configured for the terminal to the terminal through DCI, and may also send the number n of HARQ processes configured for the terminal to the terminal through a high-order signal.

Step 202: Allocate m HARQ processes among the n HARQ processes to the carriers currently supported by the terminal, where n≥m≥1, and both n and m are positive integers.

For a carrier aggregation scenario, the carriers currently supported by the terminal include multiple carriers currently aggregated by the terminal. After configuring the number of HARQ processes for the terminal, the access network device initially configures the corresponding number of HARQ processes for each carrier aggregated by the terminal. The access network device allocates m HARQ processes among the n HARQ processes to each carrier aggregated by the terminal. That is, the sum of the number of HARQ processes allocated to each carrier aggregated by the terminal is m. In addition, among the carriers aggregated by the terminal, at least two carriers are assigned the same or different number of HARQ processes. For example, the number of HARQ processes configured by the access network device for the terminal is 20, the number of carriers aggregated by the terminal is 3, and the number of HARQ processes allocated by the access network device for the three carriers are 3, 8, and 8, respectively.

Optionally, when the HARQ process is initially allocated for each carrier aggregated by the terminal, each carrier is allocated at least one HARQ process.

Optionally, for a carrier aggregation scenario, step 202 includes the following sub-steps:

1. Obtain characteristic information of each carrier aggregated by the terminal;

2. According to the characteristic information of each carrier aggregated by the terminal, assign m HARQ processes among the n HARQ processes to each carrier aggregated by the terminal.

The characteristic information of the carrier refers to information for indicating the characteristic of the carrier. Exemplarily, the characteristic information of the carrier includes at least one of the following: a basic parameter set used by the carrier, a main service type borne by the carrier, and a frequency band where the carrier is located. The characteristic information of each carrier aggregated by the terminal can be actively reported by the terminal to the access network device, or reported by the access network device after sending an instruction to the terminal, or the access network device can obtain it by itself according to the configuration information of the communication system. .

In an example, the characteristic information of the carrier is taken as the basic parameter set used by the carrier as an example. The basic parameter set adopted by the carrier includes parameters such as TTI, subcarrier spacing, and the number of symbols included in each TTI. Taking TTI as an example, for each carrier aggregated by the terminal, the access network device selects at least one HARQ process from the above n HARQ processes and assigns it to the carrier according to the TTI corresponding to the carrier. Among them, the number of HARQ processes allocated to the carrier has a positive correlation with the TTI corresponding to the carrier. That is, the longer the TTI corresponding to the carrier, the more the number of HARQ processes allocated to the carrier; the shorter the TTI corresponding to the carrier, the less the number of HARQ processes allocated to the carrier. In practical applications, the access network device may pre-store a second correspondence relationship, where the second correspondence relationship includes the correspondence relationship between different TTIs and different HARQ process numbers, and the access network device queries the above-mentioned second correspondence relationship and determines that it is: The number of HARQ processes allocated to each carrier of the terminal.

In another example, take the characteristic information of the carrier as the main service type carried by the carrier as an example. When there is only one type of service carried by the carrier, this type of service is the main type of service carried by the carrier; when there are multiple types of services carried by the carrier, the service type with the largest amount of service among the multiple service types is used as the carrier The main type of service carried. For each carrier aggregated by the terminal, the access network device selects at least one HARQ process from the above n HARQ processes and assigns it to the carrier according to the main service type borne by the carrier. For example, if the main service type borne by a carrier is a delay-sensitive service, the access network equipment allocates fewer HARQ processes to the carrier; if the main service type borne by the carrier is a delay-tolerant service, the access network equipment The network access device allocates more HARQ processes to the carrier. In practical applications, a third correspondence may be pre-stored in the access network device, where the third correspondence includes correspondences between different service types and different HARQ process numbers, and the access network device queries the above third correspondence to determine The number of HARQ processes allocated for each carrier of the terminal.

In another example, the characteristic information of the carrier is taken as an example of the frequency band in which the carrier is located. For each carrier aggregated by the terminal, the access network device selects at least one HARQ process from the above n HARQ processes and assigns it to the carrier according to the frequency band in which the carrier is located. Under normal circumstances, the frequency corresponding to the frequency band where the carrier is located has a negative correlation with the TTI corresponding to the carrier, while the number of HARQ processes allocated to the carrier has a positive correlation with the TTI corresponding to the carrier. That is, the smaller the frequency corresponding to the frequency band where the carrier is located, the longer the TTI corresponding to the carrier, and the more the number of HARQ processes allocated to the carrier; the larger the frequency corresponding to the frequency band where the carrier is located, the shorter the TTI corresponding to the carrier, which is The fewer the number of HARQ processes assigned by the carrier. In practical applications, a fourth correspondence may be pre-stored in the access network device, and the fourth correspondence includes correspondences between different frequency bands and different HARQ process numbers, and the access network device queries the above fourth correspondence and determines as follows: The number of HARQ processes allocated to each carrier of the terminal.

For the carrier aggregation scenario above, it is introduced that the access network device configures the corresponding number of HARQ processes for each carrier according to the characteristic information of each carrier aggregated by the terminal. In other possible embodiments, when initially configuring the number of HARQ processes for each carrier aggregated by the terminal, the access network device evenly allocates m HARQ processes among the n HARQ processes to each carrier aggregated by the terminal.

For a non-carrier aggregation scenario, the number of carriers currently supported by the terminal is 1, and the carrier multiplexes multiple sets of different basic parameters. The access network device allocates m HARQ processes among the above n HARQ processes to the carrier according to the basic parameter set currently used by the carrier.

Taking the TTI as an example, the access network device selects at least one HARQ process from the above n HARQ processes and assigns it to the carrier according to the TTI corresponding to the carrier. Among them, the number of HARQ processes allocated to the carrier has a positive correlation with the TTI corresponding to the carrier. That is, the longer the TTI corresponding to the carrier, the more the number of HARQ processes allocated to the carrier; the shorter the TTI corresponding to the carrier, the less the number of HARQ processes allocated to the carrier. In practical applications, the access network device may pre-store a second correspondence relationship, where the second correspondence relationship includes the correspondence relationship between different TTIs and different HARQ process numbers, and the access network device queries the above-mentioned second correspondence relationship and determines that it is: Number of HARQ processes allocated by the carrier.

The above-mentioned HARQ process configured for the carrier may be called a shared HARQ process. The shared HARQ process refers to the HARQ process dynamically configured for the carrier, and the shared HARQ process corresponding to the carrier will dynamically change according to the situation. Correspondingly, the access network device configures the number of shared HARQ processes for the carrier. The number of shared HARQ processes refers to the number of shared HARQ processes, and the number of shared HARQ processes corresponding to the carrier will dynamically change according to the situation.

In addition, the access network device can send the number of HARQ processes initially configured for the carrier currently supported by the terminal to the terminal through DCI, and can also send the number of HARQ processes initially configured for the carrier currently supported by the terminal to the terminal through a high-order signal.

After the access network device initially configures the corresponding number of HARQ processes for the carrier currently supported by the terminal, it will dynamically adjust the number of HARQ processes allocated for the carrier currently supported by the terminal according to the actual situation. The above step 102 further includes the following steps: when the carrier currently supported by the terminal changes, the access network device adjusts the number of HARQ processes allocated to the carrier currently supported by the terminal.

For the carrier aggregation scenario, the following examples are used for description.

In one example, when the characteristics of the carriers aggregated by the terminal change, the access network device adjusts the number of HARQ processes allocated to each carrier aggregated by the terminal. The characteristics of the carrier include at least one of the following: a basic parameter set used by the carrier, a main service type borne by the carrier, and a frequency band where the carrier is located. For example, when the main service type borne by a certain carrier changes from a delay-sensitive service to a delay-tolerant service, the access network device increases the number of HARQ processes allocated for the carrier. For another example, when the main service type carried by a certain carrier changes from a delay-tolerant service to a delay-sensitive service, the access network device reduces the number of HARQ processes allocated to the carrier. For another example, when the TTI corresponding to a certain carrier becomes shorter, the access network device reduces the number of HARQ processes allocated for the carrier.

In another example, when the number of carriers aggregated by the terminal changes, the access network device adjusts the number of HARQ processes allocated to each carrier aggregated by the terminal. For a carrier newly aggregated by the terminal, the access network device allocates the number of HARQ processes for the carrier. For the newly aggregated carrier of the terminal, if there are still unallocated HARQ processes in the HARQ processes configured for the terminal, at least one HARQ process is selected from the unallocated HARQ processes and allocated to the carrier; If there is no unassigned HARQ process, at least one HARQ process is selected from the HARQ processes assigned to other carriers and assigned to the carrier. For the carrier that the terminal reduces aggregated, the access network device may allocate the HARQ process allocated to the carrier to other carriers, or may recycle the HARQ process allocated to the carrier for subsequent allocation.

For non-carrier aggregation scenarios, the following examples are used for description.

When the basic parameter set used by the carrier currently supported by the terminal changes, the access network device adjusts the number of HARQ processes allocated for the carrier. Taking TTI as an example, when the TTI corresponding to the carrier becomes shorter, the access network device reduces the number of HARQ processes allocated for the carrier; when the TTI side corresponding to the carrier is long, the access network device increases the HARQ process allocated for the carrier. number of processes.

After adjusting the number of HARQ processes allocated for the carrier currently supported by the terminal, the access network device sends a HARQ configuration message to the terminal, where the HARQ configuration message is used to indicate the number of HARQ processes allocated for the carrier currently supported by the terminal. Optionally, the access network device sends the HARQ configuration message to the terminal through DCI. That is, the access network device sends DCI to the terminal, and the DCI carries the HARQ configuration message.

To sum up, in the method provided by the embodiments of the present invention, the terminal is configured with the number n of HARQ processes, and m HARQ processes among the n HARQ processes are allocated to one or more carriers currently supported by the terminal; The problem of low flexibility in the configuration and scheduling of HARQ processes. Since the network side configures the number of HARQ processes for each terminal, in the carrier aggregation scenario, each carrier aggregated by the terminal can share the above n HARQ processes, and the network side can dynamically adjust the number of HARQ processes allocated for each carrier aggregated by the terminal. This improves the flexibility of HARQ process configuration and scheduling, and helps reduce the HARQ buffering overhead of the terminal; in a non-carrier aggregation scenario, one carrier supported by the terminal can multiplex multiple different sets of basic parameters. The basic parameter set of the carrier can share the above n HARQ processes. When the basic parameter set supported by the carrier changes, the network side can dynamically adjust the number of HARQ processes allocated for the carrier, thereby improving the flexibility of HARQ process configuration and scheduling.

In addition, when the carrier currently supported by the terminal changes, the number of HARQ processes allocated to the carrier currently supported by the terminal is dynamically adjusted, so as to realize the on-demand allocation and use of the number of HARQ processes, and fully improve the flexibility of HARQ process scheduling.

In addition, the number of HARQ processes is configured for the terminal according to the characteristic information of the terminal, and the number of HARQ processes is allocated to each carrier aggregated by the terminal according to the characteristic information of each carrier aggregated by the terminal, so that the allocation of the number of HARQ processes is more accurate and more in line with actual needs. .

It should be noted that the technical solutions provided by the embodiments of the present invention are applicable to the configuration of the uplink HARQ process and also to the configuration of the downlink HARQ process.

The following are apparatus embodiments of the present invention, which can be used to execute method embodiments of the present invention. For details not disclosed in the device embodiments of the present invention, please refer to the method embodiments of the present invention.

Please refer to FIG. 3 , which shows a block diagram of an apparatus for configuring a HARQ process provided by an embodiment of the present invention. The apparatus has the function of implementing the above method example, and the function may be implemented by hardware or by executing corresponding software by the hardware. The apparatus may include: a processing unit 310 .

The processing unit 310 is configured to configure the number n of HARQ processes for the terminal.

The processing unit 310 is further configured to allocate m HARQ processes among the n HARQ processes to the carriers currently supported by the terminal, where n≥m≥1, and both n and m are positive integers.

To sum up, the apparatus provided by the embodiment of the present invention solves the problem of the prior art by configuring the number n of HARQ processes for the terminal, and assigning m HARQ processes among the n HARQ processes to one or more carriers currently supported by the terminal; The problem of low flexibility in the configuration and scheduling of HARQ processes. Since the network side configures the number of HARQ processes for each terminal, in the carrier aggregation scenario, each carrier aggregated by the terminal can share the above n HARQ processes, and the network side can dynamically adjust the number of HARQ processes allocated for each carrier aggregated by the terminal. This improves the flexibility of HARQ process configuration and scheduling, and helps reduce the HARQ buffering overhead of the terminal; in a non-carrier aggregation scenario, one carrier supported by the terminal can multiplex multiple different sets of basic parameters. The basic parameter set of the carrier can share the above n HARQ processes. When the basic parameter set supported by the carrier changes, the network side can dynamically adjust the number of HARQ processes allocated for the carrier, thereby improving the flexibility of HARQ process configuration and scheduling.

In an optional embodiment provided based on the embodiment shown in FIG. 3 , the carriers currently supported by the terminal include multiple carriers aggregated by the terminal.

Optionally, the sum of the number of HARQ processes allocated to each carrier aggregated by the terminal is the m, and among the carriers aggregated by the terminal, there are at least two carriers that are allocated the same or different number of HARQ processes.

Optionally, the processing unit 310 is configured to: obtain characteristic information of each carrier aggregated by the terminal; Allocated to each carrier aggregated by the terminal.

Optionally, the characteristic information of the carrier includes at least one of the following: a basic parameter set used by the carrier, a main service type borne by the carrier, and a frequency band where the carrier is located.

In another optional embodiment provided based on the embodiment shown in FIG. 3 , the number of carriers currently supported by the terminal is 1, and the carrier multiplexes multiple groups of different basic parameter sets, and each group of basic parameter sets includes A set of time-frequency resource configuration parameters.

Optionally, the processing unit 310 is configured to: according to the basic parameter set currently used by the carrier currently supported by the terminal, assign m HARQ processes among the n HARQ processes to the currently supported carrier by the terminal. carrier.

In another optional embodiment provided based on the embodiment shown in FIG. 3 , the processing unit 310 is configured to: acquire characteristic information of the terminal; configure a HARQ process for the terminal according to the characteristic information of the terminal number n.

Optionally, the characteristic information of the terminal includes at least one of the following: the HARQ buffer capacity of the terminal, the data processing capability of the terminal, the number of each carrier aggregated by the terminal, and the characteristics of each carrier aggregated by the terminal , the main service type requested by the terminal.

In another optional embodiment provided based on the embodiment shown in FIG. 3 , the processing unit 310 is configured to: select one candidate HARQ process number from the predefined at least one candidate HARQ process number and configure it for the terminal .

In another optional embodiment provided based on the embodiment shown in FIG. 3 , the processing unit 310 is further configured to, when the carrier currently supported by the terminal changes, adjust the allocated carrier for the carrier currently supported by the terminal. The number of HARQ processes.

In another optional embodiment provided based on the embodiment shown in FIG. 3 , as shown in FIG. 3 , the apparatus further includes: a sending unit 320 .

The sending unit 320 is configured to send DCI to the terminal, where the DCI carries a HARQ configuration message, where the HARQ configuration message is used to indicate the number of HARQ processes allocated for the carrier currently supported by the terminal.

It should be noted that: when the device provided in the above embodiment realizes its functions, only the division of the above-mentioned functional modules is used as an example for illustration. In practical applications, the above-mentioned functions can be allocated according to needs. That is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the apparatus and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process thereof is detailed in the method embodiments, which will not be repeated here.

The foregoing mainly introduces the solutions provided by the embodiments of the present invention from the perspective of interaction between the access network device and the terminal. It can be understood that, in order to implement the above-mentioned functions, the access network device and the terminal include corresponding hardware structures and/or software modules for executing each function. With reference to the units and algorithm steps of each example described in the embodiments disclosed in the present invention, the embodiments of the present invention can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those with ordinary knowledge in the technical field can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of the technical solutions of the embodiments of the present invention.

Please refer to FIG. 4 , which shows a schematic structural diagram of an access network device provided by an embodiment of the present invention.

The access network device 400 includes a transmitter/receiver 401 and a processor 402 . The processor 402 may also be a controller, which is represented as “controller/processor 402” in FIG. 4 . The transmitter/receiver 401 is used for supporting the sending and receiving of messages between the access network equipment and the terminal in the above-mentioned embodiment, and supporting the radio communication between the terminal and other terminals. The processor 402 performs various functions for communicating with the terminal. On the uplink, the uplink signal from the terminal is received via the antenna, demodulated by the receiver 401 (eg, demodulating the high frequency signal to a baseband signal), and further processed by the processor 402 to recover the Sent to service data and signaling messages. On the downlink, the service data and signal messages are processed by the processor 402 and modulated by the transmitter 401 (eg, modulating the baseband signal into a high frequency signal) to generate a downlink signal, which is transmitted to the terminal via the antenna. It should be noted that, the above-mentioned functions of demodulation or modulation can also be performed by the processor 402 . For example, the processor 402 is further configured to perform steps related to the device side of the access network in the foregoing method embodiments, and/or other steps of the technical solutions described in the embodiments of the present invention.

Further, the access network device 400 may further include a memory 403 for storing program codes and data of the access network device 400 . In addition, the access network device may further include a communication unit 404 . The communication unit 404 is used to support communication between the access network device and other network entities (eg, network devices in the core network, etc.). For example, in the LTE system, the communication unit 404 may be an S1-U interface, which is used to support communication between the access network device and a serving gateway (Serving Gateway, S-GW); or, the communication unit 404 may also be an S1 - The MME interface is used to support the communication between the access network equipment and the Mobility Management Entity (MME).

It can be understood that FIG. 4 only shows a simplified design of the access network device 400 . In practical applications, the access network device 400 may include any number of transmitters, receivers, processors, controllers, memories, communication units, etc., and all access network devices that can implement the embodiments of the present invention are in this within the protection scope of the embodiments of the invention.

Please refer to FIG. 5 , which shows a schematic structural diagram of a terminal provided by an embodiment of the present invention.

The terminal 500 includes a transmitter 501 , a receiver 502 and a processor 503 . The processor 503 may also be a controller, which is represented as “controller/processor 503” in FIG. 5 . Optionally, the terminal 500 may further include a modem processor 505 , where the modem processor 505 may include an encoder 506 , a modulator 507 , a decoder 508 and a demodulator 509 .

In one example, transmitter 501 conditions (eg, analog converts, filters, amplifies, and upconverts, etc.) the output samples and generates an uplink signal that is transmitted via an antenna to the connections described in the above embodiments. access equipment. On the downlink, the antenna receives the downlink signal transmitted by the access network equipment in the above embodiment. The receiver 502 conditions (eg, filters, amplifies, downconverts, digitizes, etc.) the signal received from the antenna and provides input samples. In modem processor 505, encoder 506 receives and processes (eg, formats, encodes, and interleaves) the service data and signaling messages to be sent on the uplink. Modulator 507 further processes (eg, symbol mapping and modulation) the encoded service data and signaling messages and provides output samples. A demodulator 509 processes (eg, demodulates) the input samples and provides symbol estimates. Decoder 508 processes (eg, deinterleaves and decodes) the symbol estimates and provides decoded data and signal messages for transmission to terminal 500 . The encoder 506 , modulator 507 , demodulator 509 and decoder 508 may be implemented by a composite modem processor 505 . These elements are processed according to the radio access technology employed by the radio access network (eg, access technology of LTE and other evolved systems). It should be noted that, when the terminal 500 does not include the modulation and demodulation processor 505 , the above-mentioned functions of the modulation and demodulation processor 505 may also be performed by the processor 503 .

The processor 503 controls and manages the actions of the terminal 500, and is configured to execute the processing procedure performed by the terminal 500 in the foregoing embodiments of the present invention. For example, the processor 503 is further configured to perform steps related to the terminal side in the foregoing method embodiments, and/or other steps of the technical solutions described in the embodiments of the present invention.

Further, the terminal 500 may further include a memory 504 for storing program codes and data for the terminal 500 .

A processor for performing the functions of the access network device or terminal in the embodiment of the present invention may be a central processing unit (Central Processing Unit, CPU), a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), a dedicated product Body circuit (Application-Specific Integrated Circuit, ASIC), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute the various exemplary logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

The steps of the method or algorithm described in conjunction with the disclosure of the embodiments of the present invention may be implemented in a hardware manner, or may be implemented in a manner in which a processor executes software instructions. Software instructions can be composed of corresponding software modules, and software modules can be stored in random access memory (Random Access Memory, RAM), flash memory, read only memory (Read Only Memory, ROM), erasable memory In addition to programmable read-only memory (Erasable Programmable ROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM), registers, hard disks, removable hard disks, CD-ROMs or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and storage medium may be located in an ASIC. Alternatively, the ASIC may be located in an access network device or terminal. Of course, the processor and the storage medium may also exist in the access network device or terminal as discrete components.

Those skilled in the art should be aware that, in one or more of the above examples, the functions described in the embodiments of the present invention may be implemented by hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media, where communication media includes any medium that facilitates transfer of a computer program from one place to another. The storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.

An embodiment of the present invention further provides a computer storage medium for storing the computer software instructions used for the access network device, including a program designed for executing the configuration method of the HARQ process on the access network device side. .

It should be understood that references herein to "a plurality" means two or more. "And/or", which describes the relationship between related objects, means that there can be three relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the contextual objects are in an "or" relationship.

The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages or disadvantages of the embodiments. Those with ordinary knowledge in the technical field can understand that all or part of the steps of implementing the above embodiments can be completed by hardware, and can also be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage. Among the media, the above-mentioned storage media may be a read-only memory, a magnetic disk or an optical disc.

The above are only exemplary embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection of the present invention. within the range.

110‧‧‧Access Network Equipment 120‧‧‧Terminals 201, 202‧‧‧Steps 310‧‧‧Processing Unit 320‧‧‧Transmitting Unit 400‧‧‧Access Network Equipment 401‧‧‧Transmitter/Receiver 402 ‧‧‧Controller/Processor 403‧‧‧Memory 404‧‧‧Communication Unit 500‧‧‧Terminal 501‧‧‧Transmitter 502‧‧‧Receiver 503‧‧‧Controller/Processor 504‧‧‧ Memory 505‧‧‧Modem Processor 506‧‧‧Encoder 507‧‧‧Modulator 508‧‧‧Decoder 509‧‧‧Demodulator

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following descriptions are only some embodiments of the present invention. For those with ordinary knowledge in the technical field, other schemas can also be obtained from these schemas on the premise of no creative effort. Fig. 1 is a schematic diagram of an application scenario provided by an embodiment of the present invention; Fig. 2 is a flowchart of a configuration method of a HARQ process provided by an embodiment of the present invention; Fig. 3 is a configuration device of a HARQ process provided by an embodiment of the present invention Block diagram; FIG. 4 is a schematic structural diagram of an access network device provided by an embodiment of the present invention; FIG. 5 is a schematic structural diagram of a terminal provided by an embodiment of the present invention.

201, 202‧‧‧Steps

Claims (10)

A method for configuring a HARQ process with a hybrid automatic repeat request, wherein the method comprises: configuring the number n of HARQ processes for a terminal; and allocating m HARQ processes among the n HARQ processes to a carrier currently supported by the terminal , the carriers currently supported by the terminal include multiple carriers aggregated by the terminal; wherein, n

m

1, n and m are both positive integers, which further includes: acquiring characteristic information of each carrier aggregated by the terminal; The HARQ process is allocated to each carrier aggregated by the terminal, wherein the characteristic information of the carrier includes at least one of the following: a basic parameter set used by the carrier, the main service type carried by the carrier, and the frequency band where the carrier is located. The method according to claim 1, wherein the sum of the number of HARQ processes allocated to each carrier aggregated by the terminal is the m, and among the carriers aggregated by the terminal, at least two carriers are The number of allocated HARQ processes is the same or different. The method according to claim 1, wherein the number of carriers currently supported by the terminal is 1, the carriers are multiplexed with multiple different sets of basic parameters, and each set of basic parameters includes a set of time-frequency Resource configuration parameters. The method of claim 3, wherein the n Allocating m HARQ processes in the HARQ process to the carrier currently supported by the terminal includes: allocating m HARQ processes in the n HARQ processes according to the basic parameter set currently used by the carrier currently supported by the terminal the currently supported carrier for the terminal. The method according to item 1 of the scope of the application, wherein the configuring the number n of HARQ processes for the terminal includes: acquiring characteristic information of the terminal; and configuring the HARQ process for the terminal according to the characteristic information of the terminal number n. The method according to claim 5, wherein the characteristic information of the terminal includes at least one of the following: HARQ buffer capacity of the terminal, data processing capability of the terminal, and the number of each carrier aggregated by the terminal , the characteristics of each carrier aggregated by the terminal, and the main service type requested by the terminal. The method according to item 1 of the scope of the application, wherein configuring the number n of HARQ processes for the terminal comprises: selecting one candidate HARQ process number to configure for the terminal from at least one predefined number of candidate HARQ processes. The method according to any one of claims 1 to 7 of the scope of the application, wherein after allocating m HARQ processes among the n HARQ processes to the carriers currently supported by the terminal, the method further comprises: When the carrier currently supported by the terminal changes, the number of HARQ processes allocated for the carrier currently supported by the terminal is adjusted. The method according to item 8 of the scope of the application, wherein after adjusting the number of HARQ processes allocated to the carriers currently supported by the terminal, the method further comprises: sending a downlink control message DCI to the terminal, the DCI carrying HARQ configuration message, the HARQ configuration message is used to indicate the number of HARQ processes allocated for the carrier currently supported by the terminal. An access network device, comprising a processor, a memory and a transceiver, the processor communicates with the memory and the transceiver; and the memory is used for storing program codes and data, the processing The device is used to call the program code and data to execute the method described in any one of items 1-9 of the scope of the patent application.

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