CN112398587A

CN112398587A - Control method, terminal and network equipment for HARQ (hybrid automatic repeat request) process feedback

Info

Publication number: CN112398587A
Application number: CN201910751083.0A
Authority: CN
Inventors: 柴丽; 倪吉庆; 王爱玲; 周伟; 吴敏
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2021-02-23
Anticipated expiration: 2039-08-14
Also published as: WO2021027574A1; CN112398587B

Abstract

The embodiment of the invention provides a method, a terminal and network equipment for controlling hybrid automatic repeat request (HARQ) process feedback. The terminal side method comprises the following steps: and starting or closing the HARQ process feedback according to the information for starting or closing the HARQ process feedback. The scheme of the invention can pertinently select and use the HARQ process feedback according to specific conditions, thereby improving the transmission efficiency.

Description

Control method, terminal and network equipment for HARQ (hybrid automatic repeat request) process feedback

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, a terminal, and a network device for controlling HARQ process feedback.

Background

In a Node-to-Node (NTN) network, a satellite-to-ground delay is too long, a Hybrid Automatic Repeat request (HARQ) retransmission technology in a conventional ground network is challenged, and at least for GEO and MEO networks, the soft buffer (soft buffer) capability of a UE is limited due to an excessively large number of HARQ processes.

In the prior art, the NTN network has the capability of configuring whether the UE turns off the HARQ function, and instead, the NTN may employ radio link control automatic retransmission (RLC ARQ retransmission). HARQ interruption means that the UE cannot do soft combining. When the transmission of a Physical Downlink Shared Channel (PDSCH) fails, the RLC layer retransmission can also work, but compared with the HARQ retransmission of the MAC layer, the spectrum efficiency is low, and the UE cannot perform soft combining on multiple retransmission results; the delay is longer, in order to avoid RLC layer retransmission, the NTN network needs means for reducing spectrum efficiency, such as repeated transmission, a Block error Rate (BLER) target, a Modulation and Coding Scheme (MCS) scheduling, and the like; the success rate of initial transmission is improved, and the frequency efficiency of the NTN network is lower.

Disclosure of Invention

The invention provides a method, a terminal and network equipment for controlling hybrid automatic repeat request (HARQ) process feedback. HARQ process feedback can be selected and used in a targeted manner according to specific conditions, and transmission efficiency is improved.

To solve the above technical problem, an embodiment of the present invention provides the following solutions:

a control method for HARQ process feedback of hybrid automatic repeat request is applied to a terminal, and the method comprises the following steps:

and starting or closing the HARQ process feedback according to the information for starting or closing the HARQ process feedback.

Optionally, the information for turning on or turning off HARQ process feedback includes at least one of the following:

the number of HARQ processes which can be run in parallel by the terminal;

probability of HARQ retransmission;

the radio link controls the retransmission times of the RLC;

HARQ process used by service;

channel quality;

the reliability requirements of the service;

the data resource bearing DRB and/or the signaling resource bearing SRB mapped by the service;

and configuring a logical channel or a logical channel group corresponding to the DRB and/or SRB of the service mapping.

Optionally, the number of HARQ processes that the terminal may run in parallel may be calculated by at least one of the following information:

soft combining capability of the terminal;

data arrival characteristics of the service;

and presetting historical data of the service.

Optionally, the HARQ retransmission probability is calculated by the terminal according to the measurement of the channel quality, or the terminal predicts the HARQ retransmission probability of the current period of time according to the historical HARQ retransmission probability, or the terminal predicts the HARQ retransmission probability of the current period of time according to the measurement of the channel quality and the historical HARQ retransmission probability.

Optionally, the number of retransmissions of the RLC is a number of retransmissions of the RLC within a preset time period.

Optionally, the method for controlling HARQ process feedback further includes:

and sending the feedback information for starting or closing the HARQ process feedback to network equipment.

Optionally, the feedback information includes at least one of:

starting or closing feedback information of HARQ feedback of the terminal in the HARQ process of the preset cell and/or the cell group, or only closing feedback information of the HARQ feedback of the terminal in the HARQ process of the preset cell and/or the cell group;

the feedback information of the HARQ feedback of the HARQ process when the logical channel and/or the logical channel group corresponding to the DRB and/or the SRB is opened or closed, or only the feedback information of the HARQ feedback of the HARQ process of the scheduling configuration or the semi-persistent scheduling SPS is closed;

starting or closing feedback information of HARQ feedback of a HARQ process of scheduling configuration and/or semi-persistent scheduling (SPS), or closing feedback information of HARQ feedback of the HARQ process of the scheduling configuration or the semi-persistent scheduling (SPS);

transmitting feedback information of HARQ feedback for starting or closing the HARQ process through a Medium Access Control (MAC) CE, or transmitting feedback information of HARQ feedback for only closing the HARQ process through the MAC CE;

and presetting a Radio Network Temporary Identifier (RNTI) which indicates to open or close HARQ feedback of the HARQ process.

Optionally, the information for turning on or turning off HARQ process feedback includes: when the number of HARQ processes which can be operated by the terminal in parallel is large, starting or closing the HARQ process feedback according to the information for starting or closing the HARQ process feedback, wherein the starting or closing of the HARQ process feedback comprises the following steps:

determining an effective time point corresponding to the HARQ process according to the number of the HARQ processes which can be operated by the terminal in parallel;

and starting or closing the HARQ process feedback according to the HARQ process number and the effective time point corresponding to the HARQ process.

Optionally, the information for turning on or turning off HARQ process feedback includes: when the retransmission times of the RLC are carried out, starting or closing the HARQ process feedback according to the information for starting or closing the HARQ process feedback comprises the following steps:

and when the retransmission times of the RLC reach a preset threshold H1, the terminal starts at least partial HARQ process feedback.

Optionally, the information for turning on or turning off HARQ process feedback includes: when the HARQ process is used by a service, starting or closing the HARQ process feedback according to the information for starting or closing the HARQ process feedback, wherein the starting or closing of the HARQ process feedback comprises the following steps:

and if the service is the service with the reliability requirement higher than a first preset value and/or the time delay requirement higher than a second preset value, starting the HARQ process feedback of the service.

Optionally, the information for turning on or turning off HARQ process feedback includes: when the channel quality is high, the terminal starts or closes the HARQ process feedback according to the information for starting or closing the HARQ process feedback, and the method comprises the following steps:

and if the channel quality is lower than a third preset threshold and higher than a fourth preset threshold, starting the HARQ process feedback.

Optionally, the starting or closing HARQ process feedback according to the information for starting or closing HARQ process feedback includes:

receiving control information sent by network equipment, wherein the control information carries information for starting or closing HARQ process feedback;

and starting or closing the HARQ process feedback according to the control information.

Optionally, the control information includes at least one of:

configuring a logical channel or a logical channel group corresponding to the DRB and/or SRB mapped by the service;

starting or closing the indication information of the HARQ feedback of the terminal in the HARQ process of the preset cell and/or the cell group, or only closing the indication information of the HARQ feedback of the terminal in the HARQ process of the preset cell and/or the cell group;

indicating information of HARQ feedback of the HARQ process when a logical channel and/or a logical channel group corresponding to the DRB and/or the SRB is opened or closed, or only indicating information of HARQ feedback of the HARQ process of scheduling configuration or semi-persistent scheduling SPS is closed;

starting or closing the scheduling configuration and/or the indication information of the HARQ feedback of the HARQ process of the SPS, or closing the scheduling configuration or the indication information of the HARQ feedback of the HARQ process of the SPS;

transmitting indication information for starting or closing HARQ feedback of the HARQ process through a Medium Access Control (MAC) CE, or transmitting indication information for only closing HARQ feedback of the HARQ process through the MAC CE;

downlink control information DCI, wherein the DCI is used for dynamically starting and closing the feedback of the HARQ process;

presetting a Radio Network Temporary Identifier (RNTI) which indicates to open or close HARQ feedback of an HARQ process;

by scheduling data on a predetermined physical resource, HARQ feedback indicating the HARQ process corresponding to data received and/or transmitted on said predetermined physical resource is turned off.

Optionally, the information for turning on or turning off the HARQ process feedback includes: when the service is mapped to the DRB and/or SRB, the starting or closing the HARQ process feedback according to the control information includes:

mapping the service data packet into a DRB and/or an SRB according to indication information carried by the service data packet, wherein the indication information is used for indicating that the service is a service with reliability requirement higher than a first preset value and/or time delay requirement higher than a second preset value;

and starting HARQ process feedback according to the logic channel corresponding to the DRB and/or the SRB or according to the indication information.

Optionally, the information for turning on or turning off HARQ process feedback includes: when configuring a logical channel or a logical channel group corresponding to the DRB and/or the SRB mapped by the service, according to the control information, starting or closing the HARQ process feedback, including:

the indication configured in the logical channel or logical channel group corresponding to the DRB and/or SRB is: when starting HARQ process feedback, starting HARQ process feedback according to the indication;

the indication configured in the logical channel or logical channel group corresponding to the DRB and/or SRB is: and when the HARQ process feedback is closed, closing the HARQ process feedback according to the indication.

The embodiment of the invention also provides a method for controlling the HARQ process feedback, which is applied to network equipment, and the method also comprises the following steps:

receiving information for starting or closing HARQ process feedback sent by a terminal;

and sending control information for starting or closing the HARQ process feedback to a terminal according to the information for starting or closing the HARQ process feedback.

Optionally, the control information includes at least one of:

The embodiment of the invention also provides a control device for hybrid automatic repeat request (HARQ) process feedback, which is applied to a terminal and comprises the following steps:

and the processing module is used for starting or closing the HARQ process feedback by the terminal according to the information for starting or closing the HARQ process feedback.

The information for starting or closing HARQ process feedback comprises at least one of the following items:

the number of HARQ processes which can be run in parallel by the terminal;

probability of HARQ retransmission;

the radio link controls the retransmission times of the RLC;

HARQ process used by service;

channel quality;

the reliability requirements of the service;

soft combining capability of the terminal;

data arrival characteristics of the service;

and presetting historical data of the service.

Optionally, the HARQ process feedback control apparatus further includes:

and the transceiver module is used for sending the feedback information fed back by starting or closing the HARQ process to the network equipment.

Optionally, the feedback information includes at least one of:

An embodiment of the present invention further provides a terminal, including:

and the processor is used for starting or closing the HARQ process feedback by the terminal according to the information for starting or closing the HARQ process feedback.

the number of HARQ processes which can be run in parallel by the terminal;

probability of HARQ retransmission;

the radio link controls the retransmission times of the RLC;

HARQ process used by service;

channel quality;

the reliability requirements of the service;

soft combining capability of the terminal;

data arrival characteristics of the service;

and presetting historical data of the service.

Optionally, the HARQ process feedback control apparatus further includes:

and the transceiver is used for sending the feedback information for starting or closing the HARQ process feedback to the network equipment.

Optionally, the feedback information includes at least one of:

Optionally, the control information includes at least one of:

The embodiment of the invention also provides a control device for hybrid automatic repeat request (HARQ) process feedback, which is applied to network equipment and comprises the following steps:

the receiving and sending module is used for receiving the information which is sent by the terminal and used for starting or closing the HARQ process feedback;

and the processing module is used for sending control information for starting or closing the HARQ process feedback to a terminal according to the information for starting or closing the HARQ process feedback.

Optionally, the control information includes at least one of:

An embodiment of the present invention further provides a network device, including:

the transceiver is used for receiving the information which is sent by the terminal and used for starting or closing the HARQ process feedback;

and the processor is used for sending control information for starting or closing the HARQ process feedback to the terminal according to the information for starting or closing the HARQ process feedback.

Optionally, the control information includes at least one of:

An embodiment of the present invention further provides a communication device, including: a processor, a memory storing a computer program which, when executed by the processor, performs the method as described above.

Embodiments of the present invention also provide a computer-readable storage medium characterized by instructions that, when executed on a computer, cause the computer to perform the method as described above.

The scheme of the invention at least comprises the following beneficial effects:

the scheme of the invention comprises the following steps of; starting or closing HARQ process feedback according to the information for starting or closing the HARQ process feedback; therefore, HARQ process feedback can be selected and used in a targeted mode according to specific conditions, and transmission efficiency is improved.

Drawings

Fig. 1 is a schematic flow chart of a control method for HARQ process feedback;

fig. 2 is a diagram illustrating HARQ feedback turn-off and turn-on for a HARQ process;

FIG. 3 is a schematic structural diagram of a short MAC CE;

FIG. 4 is a schematic diagram of a structure of a long MAC CE;

FIG. 5 is another schematic diagram of a long MAC CE;

fig. 6 is a block diagram of a control apparatus for HARQ process feedback;

fig. 7 is a schematic diagram of a terminal according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

As shown in fig. 1, an embodiment of the present invention provides a method for controlling HARQ process feedback, which is applied to a terminal, and the method includes:

and 11, starting or closing the HARQ process feedback according to the information for starting or closing the HARQ process feedback.

The embodiment of the invention starts or closes the HARQ process feedback according to the information for starting or closing the HARQ process feedback; therefore, HARQ process feedback can be selected and used in a targeted mode according to specific conditions, and transmission efficiency is improved.

In an optional embodiment of the present invention, the information for turning on or off HARQ process feedback includes at least one of the following:

1) the number of HARQ processes which can be run in parallel by the terminal;

2) probability of HARQ retransmission;

3) the radio link controls the retransmission times of the RLC;

4) HARQ process used by service;

5) channel quality;

6) the reliability requirements of the service;

7) the data resource bearing DRB and/or the signaling resource bearing SRB mapped by the service;

8) and configuring a logical channel or a logical channel group corresponding to the DRB and/or SRB of the service mapping.

The number of HARQ processes that the terminal can run in parallel here can be derived from at least one of the following information: soft combining capability of the terminal;

data arrival characteristics of the service;

and presetting historical data of the service.

The HARQ retransmission probability here may be calculated by the terminal according to the measurement of the channel quality, or the terminal predicts the HARQ retransmission probability of the current period according to the historical HARQ retransmission probability, or the terminal predicts the HARQ retransmission probability of the current period according to the measurement of the channel quality and the historical HARQ retransmission probability. For example, the terminal estimates the probability of HARQ retransmission based on the measurement of signals of Channel State Reference Signal (CSI-RS)/Synchronization Signal Block (SSB)/Cell Reference Signal (CRS). Here, the number of retransmissions of the RLC is the number of retransmissions of the RLC within a preset time period.

As shown in fig. 2, starting from time K1, in 1 scheduling period, a dashed line in the figure indicates one transmission of a service, HARQ feedback of an HARQ process of an eMBB service is closed, HARQ feedback of an HARQ process of a high-reliability low-latency service is closed, after M RLC retransmissions fail, if HARQ feedback of an HARQ process is closed, RLC may retransmit all the time, which greatly affects transmission efficiency, and at this time, HARQ feedback of an HARQ process needs to be opened. Next, according to these conditions, HARQ feedback of the HARQ process is started, thereby improving transmission efficiency.

In an optional embodiment of the present invention, after step 11, the method may further include:

and step 112, sending feedback information for starting or closing the HARQ process feedback to the network device. The feedback information includes at least one of:

In an optional embodiment of the present invention, the turning on or off the information fed back by the HARQ process includes: when the number of HARQ processes that the terminal can operate in parallel is greater, step 11 may include:

step 111, determining an effective time point corresponding to the HARQ process according to the number of HARQ processes which can be operated by the terminal in parallel; the valid time point here may be a possible downstream data arrival point; and starting or closing the HARQ process according to the number of the HARQ processes and the effective time point corresponding to the HARQ process.

Here, the terminal calculates how many HARQ processes can be run in parallel according to its own soft combining capability, or the UE obtains the data arrival characteristics of the service to the core network or the application layer, or the terminal calculates the number of HARQ processes required for one Round-Trip Time (RTT) Time according to historical data before a certain type of service, determines an effective Time point corresponding to the HARQ process according to the number of HARQ processes, and opens or closes the HARQ process according to the number of HARQ processes and the effective Time point corresponding to the HARQ process. Therefore, HARQ can be dynamically started or closed, and the transmission efficiency is improved.

In an optional embodiment of the present invention, the turning on or off the information fed back by the HARQ process includes: when the number of retransmissions of the RLC is greater, step 11 may include:

step 112, turning on or off the HARQ process feedback, including: and when the retransmission times of the RLC reach a preset threshold H1, the terminal starts at least partial HARQ process feedback.

As shown in fig. 2, after M RLC retransmissions fail, if the HARQ feedback of the HARQ process is closed, the RLC may retransmit all the time, which greatly affects transmission efficiency, and at this time, the HARQ feedback of the HARQ process needs to be started. And when the retransmission times of the RLC reaches a preset threshold H1, starting HARQ feedback of the HARQ process, thereby improving the transmission efficiency.

In an optional embodiment of the present invention, the turning on or off the information fed back by the HARQ process includes: when the HARQ process is used for a service, step 11 may include:

and 113, if the service is a service with reliability requirement higher than a first preset value and/or delay requirement higher than a second preset value, starting HARQ process feedback of the service.

Here, the terminal or the network device starts HARQ feedback of the HARQ process for the HARQ process used by the service with high reliability requirement and/or high delay requirement. Thereby improving the transmission efficiency of the service with high reliability requirement and/or high time delay requirement.

In an optional embodiment of the present invention, the turning on or off the information fed back by the HARQ process includes: when the channel quality is high, step 11 may include:

and step 114, if the channel quality is lower than a third preset threshold and higher than a fourth preset threshold, starting the HARQ process feedback. Here, the terminal or the network device starts HARQ feedback of the HARQ process when the channel quality is counted to be lower than a certain threshold and higher than the certain threshold.

In an optional embodiment of the present invention, the starting or closing HARQ process feedback according to information for starting or closing HARQ process feedback includes:

step 211, receiving control information sent by a network device, where the control information carries information for starting or closing HARQ process feedback;

step 212, according to the control information, the HARQ process feedback is turned on or off.

Here, the base station initiates a service establishment procedure to the terminal according to the indication of the core network side, completes the establishment of the service, and configures the parameter configuration of the radio bearer according to the QoS (quality of service) requirement of the service, including the configuration of at least one protocol layer: service Data Adaptation Protocol (SDAP), Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC), MAC, and PHY (physical layer) parameter configuration;

for service packets with high reliability requirements and/or high delay requirements, a terminal or a base station adds a special indication message to a packet header, and the SDAP or the PDCP identifies the special indication message, identifies the service packets with high reliability requirements and/or high delay requirements, then or maps the packets to a DRB and/or an SRB, and starts HARQ feedback of an HARQ process according to a logic channel corresponding to the DRB and/or the SRB;

for service packets with high reliability requirements and/or high delay requirements, a terminal or a base station adds a special indication message to a packet header, the SDAP or the PDCP identifies the special indication message, identifies the service packets with high reliability requirements and/or high delay requirements, then the SDAP or the PDCP informs the message to a MAC layer and/or a physical layer through indication, and then the MAC layer and/or the physical layer starts HARQ feedback of HARQ processes corresponding to the packets.

As shown in fig. 3, fig. 4 and fig. 5, the MAC CE structure carries the identifier of the logical channel and the corresponding HARQ process.

In an optional embodiment of the present invention, when the method is applied to a network device, the method includes: the network equipment sends indication information for starting or closing HARQ feedback of the UE in a certain cell and/or cell group HARQ process; or, the network equipment sends indication information for closing HARQ feedback of the UE in the HARQ process of a certain cell and/or cell group.

The indication information may be an explicit indication, and the indication information may carry at least one of the following information:

1. on or off, or only off; e.g., HARQ disabled or not enabled (HARQ-disabled);

HARQ identification (HARQ ID);

bitmap (bitmap) of HARQ ID or HARQ group number;

4. an effective time;

5. unit of effective time: symbol/slot/subframe/frame;

alternatively, the indication information may be an implicit indication, and the indication information may be at least one of the following:

the value of the number of HARQ processes (nrofHARQ-ProcessForPDSCH) of the PDSCH is expanded, for example, 0 is added; and/or, n2, n4, n6, n10, n12, n16 is extended by 0.. n, n being a natural number greater than 16, such as 1000, 600,180 or 50; if the value of nrofHARQ-processesporpdsch is 0 or other special value, it indicates that HARQ feedback configured to HARQ process of Scheduling configuration (configured grant) and/or Semi-Persistent Scheduling (SPS) is turned off; a normal value indicates that HARQ feedback configured for the configured grant and/or the SPS HARQ process is on;

the above information may be carried in the configuration of the serving cell (ServingCellConfig), in the parameter of the physical downlink shared channel-serving cell configuration (PDSCH-ServingCellConfig), in the parameter of the physical uplink control channel-format configuration (PUCCH-format config), and/or in the parameter of the physical cell group configuration (PhysicalCellGroupConfig).

step 31, receiving information for starting or closing HARQ process feedback sent by a terminal;

and step 32, sending control information for starting or closing the HARQ process feedback to the terminal according to the information for starting or closing the HARQ process feedback.

Optionally, the control information includes at least one of:

Here, the terminal signals the calculated HARQ process number to a network device (e.g., a base station) through Radio Resource Control (RRC)/Medium Access Control (MAC)/Physical Uplink Control Channel (PUCCH)/Physical Uplink Shared Channel (PUSCH). For example, the UE informs the base station through a new Buffer Status Report (BSR), which Logical channels (Logical channels) and/or Logical channel groups (Logical channel group) HARQ process feedback needs to be turned on or off. Therefore, HARQ can be dynamically started or closed, and the transmission efficiency is improved.

Here, the network device may be a base station, etc., and the base station calculates how many HARQ processes can be run in parallel and possible valid time points corresponding to the HARQ processes (i.e., possible downlink data arrival points, and then the base station starts or closes the corresponding HARQ processes according to the information, or the base station receives information, such as the probability of HARQ retransmission, the number of RLC retransmissions, and channel quality, reported by the terminal, and starts or closes HARQ feedback of the corresponding HARQ processes according to the information.

In an optional embodiment of the present invention, when the method is applied to a network device, the method may further include: and the network equipment configures an instruction for starting HARQ process feedback or closing HARQ process feedback for a logical channel or a logical channel group corresponding to the DRB and/or the SRB.

Here, the base station gives an indication whether to start or close HARQ process feedback when configuring a logical channel and/or a logical channel group corresponding to a DRB and/or an SRB corresponding to a service; for example, 1bit indicates to close the HARQ process, and if the indication does not occur, the HARQ process is opened; or 1bit indicates to start the HARQ process, if the indication does not appear, the HARQ process is closed.

In an optional embodiment of the present invention, when the method is applied to a network device, the method may further include: the network equipment sends the HARQ feedback indication information of the HARQ process when the logical channel and/or the logical channel group corresponding to the DRB and/or the SRB is opened or closed; or, the network equipment sends indication information for closing HARQ feedback of the HARQ process of the configured grant/SPS.

The indication information may be an explicit indication, and the indication information may carry at least one of the following information: HARQ ID; bitmap of HARQ ID or HARQ group number; 3. on or off or just off; 4. an effective time; 5. unit of effective time: symbol/slot/subframe/frame;

alternatively, the indication information may be an implicit indication: the indication information may be at least one of:

the above information may be carried in configuration parameters of logical channel configuration (logical channel config), radio bearer configuration (radio bearer config), SRB related configuration information (SRB-ToAddMod), and/or DRB related configuration (DRB-ToAddMod). Here, whether to configure a logical channel and/or a logical channel group corresponding to a DRB and/or an SRB corresponding to a service, according to a QoS requirement of the service, for example, the service has a high requirement for reliability and/or has a high requirement for latency, and further, some HARQ needs to be bound to the service, for example: HARQ and DRB and/or SRB bundling, and/or HARQ and logical channel and/or logical channel group bundling.

The base station may inform the terminal of HARQ information characterized by radio resources through an implicit method, for example, a packet of a logical channel and/or a logical channel group corresponding to a service with a high reliability requirement and/or a high delay requirement is sent only at a certain time point, for example, a Slot with an even number of sequence numbers or a bitmap format is informed to the terminal.

In an optional embodiment of the present invention, when the method is applied to a network device, the method may further include: the network equipment sends the indication information for starting or closing the configured grant and/or the HARQ feedback of the HARQ process of the SPS; or, the network equipment sends indication information for closing HARQ feedback of the HARQ process of the configured grant/SPS.

The indication information may be an explicit indication, and the indication information may carry at least one of the following information: HARQ ID; bitmap of HARQ ID or HARQ group number; 3. open or closed or is closed; 4. an effective time; 5. unit of effective time: symbol/slot/subframe/frame;

the value of the number of HARQ Processes (nrofHARQ-Processes) needs to be expanded, for example, 0 is added; and/or 1..16 extends by 0.. n, n being a natural number greater than 16, such as 1000, 600,180, or 50; if the value of nrofHARQ-Processes is 0 or other special value, indicating that the HARQ feedback configured to the configured grant and/or the SPS HARQ process is closed; a normal value indicates that HARQ feedback configured for the configured grant and/or the SPS HARQ process is on;

at least one Configuration parameter of the configured grant and/or SPS, such as period (periodicity), frequency hopping (frequency hopping), Configuration of configured allowed reference signals (cg-DMRS-Configuration), Configuration of MCS Table (MCS-Table, uci-OnPUSCH, resource allocation, rbg-Size, repK powercontrolloptouse, repK-RV, etc.), if the value is a special value, it indicates that HARQ feedback of HARQ processes configured to the configured grant and/or SPS is turned off; a normal value indicates that HARQ feedback configured for the configured grant and/or the SPS HARQ process is on;

the configured value of the permission timer (configurable grant timer) is to be expanded, such as adding 0; and/or 1..64 extends by 0.. m, m being a natural number greater than 64, and/or infinity; if the value of the configured granttimer is 0, infinity or other special value, indicating that the HARQ feedback configured to the configured grant and/or the SPS HARQ process is closed; a normal value indicates that HARQ feedback configured for the configured grant and/or the SPS HARQ process is on;

in an optional embodiment of the present invention, when the method is applied to a terminal or a network device, the method may further include: the terminal or the network equipment sends the indication information of starting or closing the HARQ feedback of the HARQ process through the MAC CE; or, the terminal or the network device sends the indication information for closing the HARQ feedback of the HARQ process through the MAC CE.

As shown in fig. 3, fig. 4 and fig. 5, the MAC CE structure carries the identifier of the logical channel and the corresponding HARQ process. Alternatively, the LCG (logical channel group) in fig. 3, 4 and 5 may be an LC (logical channel).

In an optional embodiment of the present invention, when the method is applied to a network device, the method may further include: when the network device starts or closes the HARQ feedback of the HARQ process, the network device sends DCI to the terminal to dynamically start and close the feedback of the HARQ process, where the DCI may carry at least one of the following information: HARQ ID; bitmap of HARQ ID or HARQ group number; 3. open or closed or is closed; 4. an effective time; 5. unit of effective time: symbol/slot/subframe/frame.

In an optional embodiment of the present invention, when the method is applied to a network device, the method may further include: when the network device starts or closes the HARQ feedback of the HARQ process, the network device may perform the feedback of dynamically starting and closing the HARQ process by sending DCI to the terminal, and may utilize at least one field in DCI format in the prior art:

new data indicator bit (New data indicator)1bit, redundancy version bit (2bit), HARQ process number (HARQ process number), TPC command (TPC command for scheduled PUCCH, 2bit) for scheduling PUCCH, resource indicator (PUCCH resource indicator, 3bit) for PUCCH, resource indicator (PDSCH-to-HARQ _ feedback timing indicator, 3bit) for PDSCH-to-HARQ feedback to indicate at least one of the following information: 1. open or closed or is closed; e.g., HARQ-disabled; 2. whether to turn on or off the corresponding HARQ ID; 3. whether to turn on or turn off the bitmap or HARQ group number of the corresponding HARQ ID; 4. effective time of opening or closing; 5. unit of effective time of on or off: symbol/slot/subframe/frame;

further, on the basis of the format of the existing DCI, the field which cannot be used does not occupy bytes.

Optionally, designing a format of the new DCI includes indicating at least one of the following information: 1. open or closed or is closed; e.g., HARQ-disabled; 2. whether to turn on or off the corresponding HARQ ID; 3. whether to turn on or turn off the bitmap or HARQ group number of the corresponding HARQ ID; 4. effective time of opening or closing; 5. unit of effective time of on or off: symbol/slot/subframe/frame.

In an optional embodiment of the present invention, when the method is applied to a network device, the method may further include: the network device indicates HARQ feedback that is to turn on or turn off the HARQ process by transmitting a specific RNTI.

In an optional embodiment of the present invention, when the method is applied to a network device, the method may further include: the network device indicates HARQ feedback of HARQ processes corresponding to data received and/or transmitted on specific physical resources (time, frequency, code and/or spatial physical resources) by scheduling the data on these specific physical resources to be turned off. The information that the HARQ processes corresponding to the data received and/or transmitted on these specific physical resources are turned off may be configured in higher layer signaling (RRC signaling and/or MAC signaling) or defined in a protocol. Optionally, the combination of higher layer signaling (RRC signaling and/or MAC signaling) configuration and definition in the protocol, for example, using an index table lookup method.

According to the scheme of the invention, the HARQ process feedback is started or closed according to the information for starting or closing the HARQ process feedback; therefore, HARQ process feedback can be selected and used in a targeted mode according to specific conditions, and transmission efficiency is improved.

As shown in fig. 6, an embodiment of the present invention further provides a control apparatus 60 for HARQ process feedback, which is applied to a terminal, and includes:

and the processing module 61 is configured to, according to the information for starting or closing the HARQ process feedback, start or close the HARQ process feedback by the terminal.

the number of HARQ processes which can be run in parallel by the terminal;

probability of HARQ retransmission;

the radio link controls the retransmission times of the RLC;

HARQ process used by service;

channel quality;

the reliability requirements of the service;

soft combining capability of the terminal;

data arrival characteristics of the service;

and presetting historical data of the service.

Optionally, the HARQ process feedback control apparatus further includes:

a transceiving module 62, configured to send feedback information for turning on or turning off the HARQ process feedback to a network device.

Optionally, the feedback information includes at least one of:

Optionally, the control information includes at least one of:

It should be noted that the apparatus is an apparatus corresponding to the method shown in fig. 1, and all the implementations in the above method embodiment are applicable to the embodiment of the apparatus, and the same technical effects can be achieved.

As shown in fig. 7, an embodiment of the present invention further provides a communication device 70, where the communication device is a terminal or a network device, and the communication device includes: and the processor 71 is configured to, according to the information for turning on or turning off the HARQ process feedback, turn on or turn off the HARQ process feedback by the terminal.

the number of HARQ processes which can be run in parallel by the terminal;

probability of HARQ retransmission;

the radio link controls the retransmission times of the RLC;

HARQ process used by service;

channel quality;

the reliability requirements of the service;

soft combining capability of the terminal;

data arrival characteristics of the service;

and presetting historical data of the service.

Optionally, the HARQ process feedback control apparatus further includes:

and the transceiver 72 is configured to send feedback information for turning on or turning off the HARQ process feedback to a network device.

Optionally, the feedback information includes at least one of:

Optionally, the control information includes at least one of:

It should be noted that the terminal is a terminal corresponding to the method shown in fig. 1, and all implementation manners in the method embodiment are applicable to the embodiment of the terminal, and the same technical effect can be achieved. The terminal may further include: a memory 73; the transceiver 72 and the processor 71, and the transceiver 72 and the memory 73 may be connected by a bus interface, and the functions of the transceiver 72 may be implemented by the processor 71, and the functions of the processor 71 may also be implemented by the transceiver 72.

Optionally, the control information includes at least one of:

It should be noted that the apparatus is an apparatus corresponding to the method on the network device side, and all implementation manners in the method embodiments are applicable to the embodiment of the apparatus, and the same technical effect can be achieved.

Optionally, the control information includes at least one of:

It should be noted that the network device is a network device corresponding to the method on the network device side, and all implementation manners in the method embodiments are applicable to the embodiment of the network device, and the same technical effect can be achieved. The network device may further include: a memory; the transceiver and the processor, and the transceiver and the memory can be connected through a bus interface, the functions of the transceiver can be realized by the processor, and the functions of the processor can also be realized by the transceiver.

An embodiment of the present invention further provides a communication device, including: a processor, a memory storing a computer program which, when executed by the processor, performs the method as described above. All the implementation manners in the above method embodiments are applicable to the embodiments, and the same technical effect can be achieved.

Embodiments of the present invention also provide a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the method as described above. All the implementation manners in the above method embodiments are applicable to the embodiments, and the same technical effect can be achieved.

In the above embodiments of the present invention, the control information for starting or closing the HARQ process feedback is obtained; dynamically starting or closing the HARQ process feedback according to the control information; therefore, HARQ process feedback can be selected and used in a targeted mode according to specific conditions, and transmission efficiency is improved.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.

Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method for controlling HARQ process feedback is applied to a terminal, and the method comprises the following steps:

2. The method of claim 1, wherein the information for turning on or off HARQ process feedback comprises at least one of the following:

the number of HARQ processes which can be run in parallel by the terminal;

probability of HARQ retransmission;

the radio link controls the retransmission times of the RLC;

HARQ process used by service;

channel quality;

the reliability requirements of the service;

3. The method as claimed in claim 2, wherein the number of HARQ processes that the terminal can operate in parallel is derived from at least one of the following information:

soft combining capability of the terminal;

data arrival characteristics of the service;

and presetting historical data of the service.

4. The method as claimed in claim 2, wherein the HARQ process feedback control method is characterized in that the HARQ retransmission probability is derived by the terminal according to the measurement of the channel quality, or the terminal predicts the HARQ retransmission probability of the current time period according to the historical HARQ retransmission probability, or the terminal predicts the HARQ retransmission probability of the current time period according to the measurement of the channel quality and the historical HARQ retransmission probability.

5. The method of claim 2, wherein the number of RLC retransmissions is the number of RLC retransmissions within a predetermined time period.

6. The method for controlling HARQ process feedback according to claim 1, further comprising:

7. The method of claim 6, wherein the feedback information comprises at least one of the following:

8. The method of claim 1, wherein the information for turning on or off HARQ process feedback comprises: when the number of HARQ processes which can be operated by the terminal in parallel is large, starting or closing the HARQ process feedback according to the information for starting or closing the HARQ process feedback, wherein the starting or closing of the HARQ process feedback comprises the following steps:

9. The method of claim 1, wherein the information for turning on or off HARQ process feedback comprises: when the retransmission times of the RLC are carried out, starting or closing the HARQ process feedback according to the information for starting or closing the HARQ process feedback comprises the following steps:

10. The method of claim 1, wherein the information for turning on or off HARQ process feedback comprises: when the HARQ process is used by a service, starting or closing the HARQ process feedback according to the information for starting or closing the HARQ process feedback, wherein the starting or closing of the HARQ process feedback comprises the following steps:

11. The method of claim 1, wherein the information for turning on or off HARQ process feedback comprises: when the channel quality is high, the terminal starts or closes the HARQ process feedback according to the information for starting or closing the HARQ process feedback, and the method comprises the following steps:

12. The method for controlling HARQ process feedback according to claim 1, wherein turning on or off HARQ process feedback according to the information for turning on or off HARQ process feedback comprises:

13. The method of claim 12, wherein the information for turning on or off HARQ process feedback comprises: when the service is mapped to the DRB and/or SRB, the starting or closing the HARQ process feedback according to the control information includes:

14. The method of claim 12, wherein the information for turning on or off HARQ process feedback comprises: when configuring a logical channel or a logical channel group corresponding to the DRB and/or the SRB mapped by the service, according to the control information, starting or closing the HARQ process feedback, including:

15. A method for controlling HARQ process feedback is applied to a network device, and the method further comprises the following steps:

16. The method of claim 15, wherein the control information comprises at least one of the following:

17. A control device for HARQ process feedback of hybrid automatic repeat request (HARQ) is applied to a terminal and comprises the following components:

and the processing module is used for starting or closing the HARQ process feedback according to the information for starting or closing the HARQ process feedback.

18. A terminal, comprising:

and the processor is used for starting or closing the HARQ process feedback according to the information for starting or closing the HARQ process feedback.

19. A control device for HARQ process feedback of hybrid automatic repeat request (HARQ) is applied to a network device, and comprises:

20. A network device, comprising:

21. A communication device, comprising: a processor, a memory storing a computer program which, when executed by the processor, performs the method of any of claims 1 to 14, or the method of any of claims 15 to 16.

22. A computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 14, or the method of any one of claims 15 to 16.