WO2018082554A1

WO2018082554A1 - Method and device for dynamically feeding back harq-ack

Info

Publication number: WO2018082554A1
Application number: PCT/CN2017/108869
Authority: WO
Inventors: 赵铮; 陈山枝; 任斌; 康绍莉; 邢艳萍; 李铁
Original assignee: 电信科学技术研究院
Priority date: 2016-11-04
Filing date: 2017-11-01
Publication date: 2018-05-11
Also published as: CN108023690A

Abstract

Provided in the present disclosure are a method and device for dynamically feeding back an HARQ-ACK. The method comprises: a network side determining dynamic feedback intervals of an HARQ-ACK; and the network side finishing feeding back a corresponding HARQ-ACK in each of the feedback intervals.

Description

Dynamic HARQ-ACK feedback method and device

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 201610965849.1, filed on Jan.

Technical field

The present disclosure relates to the field of communications technologies, and in particular, to a dynamic HARQ-ACK (hybrid automatic repeat request acknowledgement information) feedback method and apparatus.

Background technique

The 5th generation mobile communication system (5G for short) proposes technical requirements such as Gbps (transmission speed of 1000 megabits per second) user experience rate, ultra-high traffic density, large number of connections, spectrum efficiency improvement, and delay reduction. The domestic IMT-2020 (5G) promotion group proposed four typical application scenarios for 5G: wide-area coverage for mobile Internet applications, hot-spot high-capacity coverage scenarios, low-power large connections for mobile IoT applications, and low latency. Highly reliable scenes.

For 5G mobile IoT business applications, the main challenge is to support wide-area coverage and large connectivity. In the wide-area coverage scenario, a certain proportion of users have large propagation loss, need to be retransmitted multiple times, and obtain correct decoding. In addition, in the typical scenario of mMTC (Massive Low Power Connection) discussed by 3GPP, 80% of users are in indoor environment. Compared with outdoor users, channel fading will have an additional tens of dB (Decibel, decibel) of penetration loss. For these indoor users, multiple retransmissions are required to obtain correct decoding. Unlike 10G networks, only 10% of users need to retransmit. In some scenarios, most 5G users need to retransmit. In addition, considering that the Internet of Things is mostly small data packets, if each data packet is fed back ACK/NACK, the proportion of signaling overhead is higher than the ratio of ACK/NACK signaling overhead in the 4G network. Therefore, for these needs of 5G, these factors need to be considered when designing the HARQ mechanism.

The above line transmission is taken as an example. In the related retransmission mechanism, after receiving each data packet, the receiving end sends an ACK/NACK message to the transmitting end to notify the transmitting end to retransmit or not retransmit the data packet. Or, the receiving end follows the TTI bundling (also called subframe bundling) in a continuous fixed time. In the inter-sequence, the transmitting end continuously transmits the data packet, and after receiving the combined processing of the continuously transmitted data packets, the receiving end feeds back an ACK/NACK information to the transmitting end according to the result of the combined detection. Here, the continuous fixed time interval is unique, that is, if the user needs to repeatedly send the data packet for a continuous period of time, the length of the continuous transmission is the same for all of these users.

As mentioned above, most users need to retransmit because the user is in a large coverage and indoor scene. Depending on the user's path loss and penetration loss, the number of times users need to retransmit is different. If all users who need to retransmit multiple times use the same TTI bundling size, some users will perform unnecessary retransmissions or increase the number of ACK/NACK feedbacks of users.

In the mMTC scenario, the penetration loss causes most users to retransmit, and each packet feeding HARQ-ACK introduces unnecessary signaling overhead.

In the NB-IoT (Narrow Band Internet of Things), the DCI control signaling is used to indicate the number of repetitions of the data packet sent by the user. This manner of signaling in the physical layer wastes the signaling overhead of the physical layer. . In addition, in NB-IoT, data packets are continuously transmitted in valid subframes, and there is no time interval between repeated data packets, so the advantage of time diversity is not fully utilized. In addition, NB-IoT is applied to the scheduling scenario without considering the schedule-free scenario. The HARQ-ACK of NB-IoT is not applicable to communication with 5G large connection number and high coverage.

Summary of the invention

Embodiments of the present disclosure provide a dynamic HARQ-ACK feedback method and apparatus.

According to the first aspect, an embodiment of the present disclosure provides a dynamic HARQ-ACK feedback method. The method includes: determining, by the network side, a dynamic feedback interval of the HARQ-ACK; and the network side feeding back a corresponding HARQ-ACK at the end of each of the feedback intervals.

Optionally, the network side determines a dynamic feedback interval of the HARQ-ACK, where the network side selects a dynamic feedback interval of one HARQ-ACK from a dynamic feedback interval of the multiple configured multiple HARQ-ACKs; or The network side acquires a dynamic feedback interval of the HARQ-ACK determined by the terminal autonomously; or the network side obtains the dynamic feedback interval of the HARQ-ACK according to the path loss measurement of the terminal; or the network side obtains the HARQ-ACK according to the HARQ-ACK statistics. The dynamic feedback interval of the HARQ-ACK is obtained; or the network side obtains the dynamic feedback interval of the HARQ-ACK according to the terminal feedback measurement.

Optionally, the method further includes: the network side notifying the terminal of the dynamic feedback interval of the HARQ-ACK by using system broadcast or user-specific signaling.

Optionally, the feedback interval includes at least one of the following: a time interval between two HARQ-ACKs received by the terminal, a time interval from the initial transmission of the data packet to the HARQ-ACK, and a last time the HARQ-ACK is received, The time interval from the first packet of the HARQ process to the HARQ-ACK; the time interval from the transmission of the current data packet by the terminal to the transmission of the next repeated data packet; and the end of a group of data packets to the corresponding HARQ-ACK Interval.

According to the second aspect, an embodiment of the present disclosure further provides a dynamic HARQ-ACK feedback method. The method includes: determining, by the terminal, a dynamic feedback interval of the HARQ-ACK; and the terminal reading the HARQ-ACK in a corresponding time slot according to the dynamic feedback interval of the HARQ-ACK.

Optionally, the determining, by the terminal, a dynamic feedback interval of the HARQ-ACK includes: determining, by the terminal, a dynamic feedback interval of the HARQ-ACK.

Optionally, the terminal autonomously determines a dynamic feedback interval of the HARQ-ACK, where the terminal determines a dynamic feedback interval of the HARQ-ACK according to a path loss measurement of the terminal.

Optionally, the method further includes: the terminal feeding back the determined sequence number corresponding to the dynamic feedback interval of the HARQ-ACK to the network side by using high layer or physical layer signaling.

Optionally, the feedback interval includes at least one of the following: a time interval between two HARQ-ACKs received by the terminal, a time interval from the initial transmission of the data packet to the HARQ-ACK, and a last time the HARQ-ACK is received, The time interval from the first packet of the HARQ process to the HARQ-ACK; the time interval from the transmission of the current data packet by the terminal to the transmission of the next repeated data packet; and the end of a group of data transmissions to the corresponding HARQ-ACK time interval.

According to the third aspect, an embodiment of the present disclosure further provides a dynamic HARQ-ACK feedback device. The apparatus includes: a first determining module, configured to determine a dynamic feedback interval of the HARQ-ACK; and a feedback module, configured to feed back a corresponding HARQ-ACK at the end of each of the feedback intervals.

Optionally, the first determining module is further configured to: select a dynamic feedback interval of one HARQ-ACK from a dynamic feedback interval of the multiple configured multiple HARQ-ACKs; or acquire dynamic feedback of the HARQ-ACK determined by the terminal autonomously. The dynamic feedback interval of the HARQ-ACK is obtained according to the path loss measurement of the terminal; or the dynamic feedback interval of the HARQ-ACK is obtained according to the ARQ-ACK statistics; or Dynamic feedback interval of HARQ-ACK.

Optionally, the device further includes: a first notification module, configured to notify the terminal of the dynamic feedback interval of the HARQ-ACK by using a system broadcast or a specific signaling.

According to the fourth aspect, an embodiment of the present disclosure further provides a dynamic HARQ-ACK feedback device. The apparatus includes: a second determining module, configured to determine a dynamic feedback interval of the HARQ-ACK; and a reading module, configured to read the HARQ-ACK in a corresponding time slot according to the dynamic feedback interval of the HARQ-ACK.

Optionally, the second determining module is further configured to: autonomously determine a dynamic feedback interval of the HARQ-ACK.

Optionally, the second determining module is further configured to: determine a dynamic feedback interval of the HARQ-ACK according to a path loss measurement of the terminal.

Optionally, the device further includes: a second notification module, configured to feed back the determined sequence number corresponding to the dynamic feedback interval of the HARQ-ACK to the network side by using high layer or physical layer signaling.

According to a fifth aspect, an embodiment of the present disclosure provides a dynamic HARQ-ACK feedback apparatus. The apparatus includes a first processor, a first bus, and a first memory, wherein the first memory stores programs and data, and the first processor and the first memory are connected by the first bus The first processor is configured to read a program and data stored in the first memory to perform the method described in the first aspect above.

According to the sixth aspect, an embodiment of the present disclosure provides a dynamic HARQ-ACK feedback apparatus. The apparatus includes: a second processor, a second bus, and a second memory, wherein the second memory stores programs and data, and the second processor and the second memory are connected by the second bus The second processor is configured to read a program and data stored in the second memory to perform the method described in the second aspect above.

According to a seventh aspect, an embodiment of the present disclosure provides a nonvolatile storage medium storing a program and data on the nonvolatile storage medium, when the program and data are executed by a processor, The processor implements the method described in the first aspect above.

According to an eighth aspect, an embodiment of the present disclosure provides a nonvolatile storage medium storing a program and data on the nonvolatile storage medium, when the program and data are executed by a processor, The processor implements the method described in the second aspect above.

DRAWINGS

FIG. 1 is a flowchart of a dynamic HARQ-ACK feedback method according to an embodiment of the present disclosure;

2 is a flowchart of a dynamic HARQ-ACK feedback method according to an embodiment of the present disclosure;

3 is a block diagram of a dynamic HARQ-ACK feedback apparatus according to an embodiment of the present disclosure;

4 is a block diagram of a dynamic HARQ-ACK feedback apparatus according to an embodiment of the present disclosure;

FIG. 5 is a block diagram of a dynamic HARQ-ACK feedback apparatus according to an embodiment of the present disclosure;

6 is a block diagram of a dynamic HARQ-ACK feedback device of an embodiment of the present disclosure.

detailed description

Those skilled in the art will appreciate that embodiments of the present disclosure may be implemented as a system, apparatus, device, method, or computer program product. Thus, embodiments of the present disclosure may be embodied in the form of full hardware, complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.

The embodiment of the present disclosure provides a dynamic HARQ-ACK (Hybrid Automatic Repeat Request Acknowledgement) feedback mechanism. The network side pre-configures or indicates the feedback interval through signaling (high-level or physical layer), and the feedback interval is separated. One or several HARQ-ACKs are fed back on the HARQ-ACK resource. The terminal determines the dynamic feedback interval of the HARQ-ACK according to the system broadcast or terminal (or UE) specific signaling, and reads the HARQ-ACK in the corresponding time slot.

For the scheduled scenario, the base station scheduling terminal sends a data signal, and the dynamic feedback interval of the HARQ-ACK is the interval from the first data packet to the HARQ-ACK after the scheduling signaling. For the hands-free scheduling, the dynamic feedback interval of the HARQ-ACK is the time interval from the initial transmission to the HARQ-ACK, or the interval at which the user transmits the first data packet to the HARQ-ACK from the last HARQ-ACK received. .

In the case of no scheduling, the base station may not detect the first data packet in the HARQ-ACK feedback interval. At this time, the base station regards the second data packet as the first data packet, so that the base station and the terminal understand the inconsistency of the first data packet position, thereby causing inconsistent position understanding of the HARQ-ACK feedback. In the scheduling-free scenario, the location of the first data packet in the HARQ-ACK feedback interval needs to be clarified, and the first data packet indication may be sent to the base station together with the first data packet in the form of accompanying signaling, or the base station determines by activation detection. First packet.

It should be noted that the above feedback interval refers to a time interval that reflects a data packet and its HARQ-ACK, for example, a time interval between two HARQ-ACKs received by the terminal; or a time when the packet is initially transmitted to the HARQ-ACK. Interval, or the interval from the first packet of the HARQ process to the HARQ-ACK from the last HARQ-ACK received; the feedback interval here may also be the transmission of the current packet from the terminal to the transmission of the next repeated packet. Time interval; or a set of time intervals between the end of the transmission and the corresponding HARQ-ACK.

The feedback interval may further include the above two contents, that is, the time interval between the two HARQ-ACKs received by the terminal, and the time interval from the transmission of the current packet by the terminal to the transmission of the next repeated packet, or the time from the initial transmission of the packet to the HARQ-ACK. Interval, and the time interval from the transmission of the current packet to the transmission of the next repeated packet, or from the last HARQ-ACK received, the interval from the first packet of the HARQ process to the HARQ-ACK, and the time from the user The time interval between the transmission of the current packet and the transmission of the next repeated packet.

It should be noted that if the feedback interval is notified by means of system broadcast, the system broadcasts one or more time intervals. If the system only broadcasts one time interval, all terminals can use a unique time interval for feedback. Alternatively, the protocol pre-configures a number of feedback intervals, and the system broadcasts sequence number information of the feedback interval. For example, when the protocol is pre-configured with a number of feedback intervals and the path loss of the user using the feedback interval, the user reads the HARQ-ACK according to the calculated path loss according to the path loss, and the path loss calculated by the terminal and the base station occur. Calculate path loss inconsistency In this case, the location where the base station transmits the HARQ-ACK and the location where the terminal reads the HARQ-ACK may be inconsistent. To avoid this, the base station may signal the dynamic feedback interval of the terminal HARQ-ACK, or the terminal may pass the signal. The base station is notified of the selected feedback interval sequence number, or the HARQ-ACK resource corresponding to the base station in each feedback interval is fed back to the HARQ-ACK, and the terminal reads the HARQ-ACK information at the corresponding position.

The time interval at which the base station side determines the HARQ-ACK dynamics may be obtained according to the path loss measurement of the terminal, or may be obtained according to the HARQ-ACK of the user signal, or may be obtained according to the statistical characteristics of the user feedback measurement, such as a CQI (Channel Quality Indicator). /RSRP (Reference signal received power).

Another aspect of the embodiments of the present disclosure further provides a dynamic HARQ-ACK feedback mechanism, where the terminal side autonomously determines a dynamic feedback interval of the HARQ-ACK, and the terminal determines the feedback interval of the ACK autonomously according to information such as path loss, the interval. The base station is notified by the signaling method, or the base station and the terminal jointly determine the dynamic feedback interval of the feedback HARQ-ACK according to the measurement quantity reported by the terminal, such as CQI/RSRP, for example, the base station pre-defined CQI/RSRP threshold, and the terminal according to the CQI/ The RSRP threshold performs a dynamic feedback interval for determining HARQ-ACK. The protocol may be configured with a plurality of feedback intervals, and the dynamic feedback interval of the HARQ-ACK is determined according to the path loss, and the sequence number corresponding to the interval is fed back to the base station through high layer or physical layer signaling.

It should be noted that the foregoing feedback interval refers to a time interval between two HARQ-ACKs received by the terminal, or a time interval from the initial transmission of the packet to the HARQ-ACK, or from the last HARQ-ACK received, corresponding to the HARQ. The interval between the first packet of the process and the HAR0-ACK; the feedback interval here may also be the time interval from the transmission of the current packet by the terminal to the transmission of the next repeated packet; the feedback interval may also include the above two contents, that is, the terminal receiving The time interval between two HARQ-ACKs, and the time interval from the transmission of the current packet to the transmission of the next repeated packet, or the time interval from the initial transmission of the packet to the HARQ-ACK, and the transmission of the current packet from the terminal to the transmission of the next repetition. The time interval of the packet, or the interval from the last HARQ-ACK received, the interval from the first packet of the HARQ process to the HARQ-ACK, and the time interval from the transmission of the current packet to the transmission of the next repeated packet.

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the embodiments of the present invention have been shown in the drawings, the embodiments Rather, these embodiments are provided to provide a more thorough The disclosure is to be understood, and the scope of the present disclosure can be fully conveyed to those skilled in the art.

Referring to FIG. 1 , FIG. 1 illustrates a dynamic HARQ-ACK feedback method, where the dynamic HARQ-ACK feedback method specifically includes the following steps 101-102.

Step 101: The network side determines a dynamic feedback interval of the HARQ-ACK.

Optionally, in this embodiment, the network side (for example, the base station) may determine the dynamic feedback interval of the HARQ-ACK by using any one of the following manners to the fifth manner.

Manner 1: The network side selects a dynamic feedback interval of the HARQ-ACK from the dynamic feedback intervals of the multiple configured multiple HARQ-ACKs.

Manner 2: The network side acquires a dynamic feedback interval of the HARQ-ACK determined by the terminal autonomously.

Manner 3: The network side obtains a dynamic feedback interval of the HARQ-ACK according to the path loss measurement of the terminal.

Manner 4: The network side obtains the dynamic feedback interval of the HARQ-ACK according to the HARQ-ACK statistics.

In the fifth mode, the network side obtains the dynamic feedback interval of the HARQ-ACK according to the terminal feedback measurement quantity. It should be noted that the foregoing measurement quantity may be a CQI (channel quality indicator), an RSRP (reference signal received power), or the like.

Optionally, in this embodiment, the feedback interval includes at least one of the following: a time interval between two HARQ-ACKs received by the terminal; a time interval from the initial transmission of the data packet to the HARQ-ACK; and a HARQ received from the last time. The ACK starts, the time interval corresponding to the first packet of the HARQ process to the HARQ-ACK; the time interval from the transmission of the current data packet by the terminal to the transmission of the next repeated data packet; and the end time of a group of data packets to the corresponding HARQ - The time interval between ACKs.

Step 102: The network side feeds back a corresponding HARQ-ACK at the end of each of the feedback intervals.

It should be noted that the above HARQ-ACK includes ACK and NACK.

Optionally, in this embodiment, the method further includes: the network side notifying the dynamic feedback interval of the terminal HARQ-ACK by using system broadcast or user-specific signaling.

In this embodiment, in the case that most terminals need to have a high number of retransmissions, the HARQ-ACK can be fed back according to different repetition granularities, thereby saving unnecessary signaling overhead and reducing the HARQ implementation process. In addition, the terminal side does not have to perform HARQ-ACK detection after each transmission, which reduces the processing complexity of the receiving end, and is beneficial to the IoT terminal operating in the power saving mode.

Referring to FIG. 2, FIG. 2 shows a dynamic HARQ-ACK feedback method, and the dynamic HARQ-ACK feedback method specifically includes the following steps 201-202.

Step 201: The terminal determines a dynamic feedback interval of the HARQ-ACK.

In this embodiment, the terminal may determine the dynamic feedback interval of the HARQ-ACK by using any one of the following manners:

Manner 1: The terminal autonomously determines the dynamic feedback interval of the HARQ-ACK.

Specifically, the terminal determines the dynamic feedback interval of the HARQ-ACK according to the path loss measurement of the terminal.

In this embodiment, if the terminal autonomously determines the dynamic feedback interval of the HARQ-ACK, the method further includes: the terminal feeding back the determined sequence number corresponding to the dynamic feedback interval of the HARQ-ACK to the network through high layer or physical layer signaling. side.

Manner 2: The terminal acquires a dynamic feedback interval of the HARQ-ACK that is pre-configured or signaled by the network.

Specifically, the terminal acquires the sequence number corresponding to the dynamic feedback interval of the HARQ-ACK determined by the network side through system broadcast or specific signaling.

In this embodiment, optionally, the feedback interval includes at least one of the following: a time interval between two HARQ-ACKs received by the terminal; a time interval from the initial transmission of the data packet to the HARQ-ACK; The HARQ-ACK starts, the time interval corresponding to the first packet of the HARQ process to the HARQ-ACK; the time interval from the transmission of the current data packet by the terminal to the transmission of the next repeated data packet; and the end of a group of data packet transmission to the corresponding time The time interval between HARQ-ACKs.

Step 202: The terminal reads the HARQ-ACK in the corresponding time slot according to the dynamic feedback interval of the HARQ-ACK.

In some embodiments of the present disclosure, a number of HARQ-ACK feedback intervals are specified in the protocol, each feedback interval including an interval that may be: a packet (eg, an initial transmission packet) to its HARQ-ACK, and The number of retransmissions in the interval, then at the interval between two retransmissions It is the interval between the initial transmission packet and the HARQ-ACK divided by the number of retransmissions. It should be noted that, for a HARQ process, if the terminal receives the HARQ-ACK as a NACK, it needs to perform retransmission within the next retransmission interval, which is also the first data packet from the NACK to the HARQ- The time interval of the ACK.

When the terminal initially accesses the system, the base station configures the HARQ-ACK feedback interval of the terminal according to the path loss measured by the terminal, or after the terminal transmits the data packet for a certain time, the base station determines the HARQ-ACK according to the HARQ-ACK information of the terminal. Dynamic feedback interval. The HARQ-ACK feedback interval of the terminal, and the base station notifies the terminal through high layer signaling.

Upon receiving the HARQ-ACK feedback interval, the terminal may use the initial transmission packet to the HARQ-ACK interval time by the number of retransmissions to obtain a retransmission packet interval, and read the HARQ-ACK information at a corresponding time. If the terminal receives the HARQ-ACK as a NACK, starting from the HARQ-ACK, starting from the first data packet in the HARQ process, the interval base station notifies the initial transmission packet to the time interval of the HARQ-ACK interval, and reads HARQ-ACK information.

In this embodiment, the time interval of the HARQ-ACK dynamics can be determined according to the path loss of the terminal and the HARQ-ACK statistics, and the signaling overhead can be effectively reduced without adding additional retransmissions.

In some embodiments of the present disclosure, a number of HARQ-ACK feedback intervals are specified in the protocol, and each feedback interval may include the following: an initial transmission packet to a HARQ-ACK interval, and a number of retransmissions within the interval, then The interval between two retransmissions is the interval between the initial transmission packet and the HARQ-ACK divided by the number of retransmissions. It should be noted that, for a HARQ process, if the terminal receives the HARQ-ACK as a NACK, it needs to perform retransmission within the next retransmission interval, which is also the first data packet from the NACK to the HARQ- The time interval of the ACK.

When the terminal initially accesses the system, the terminal determines the HARQ-ACK feedback interval of the terminal according to the path loss measured by the terminal, and notifies the base station of the sequence number of the feedback interval, or, after the user transmits the data packet for a certain time, the terminal according to the HARQ- The ACK information is used to determine a dynamic feedback interval of the HARQ-ACK, and the sequence number of the feedback interval is notified to the base station. The user's HARQ-ACK feedback interval, the terminal notifies the base station through high layer signaling.

After receiving the HARQ-ACK feedback interval, the base station may use the initial transmission packet to the HARQ-ACK interval. The time is divided by the number of retransmissions to obtain the retransmission packet interval, and the HARQ-ACK information is transmitted at the corresponding time.

In this embodiment, the time interval of the HARQ-ACK dynamics is determined according to the path loss of the terminal and the HARQ-ACK statistics, and the signaling overhead can be effectively reduced without adding additional retransmissions.

Referring to FIG. 3, FIG. 3 illustrates a dynamic HARQ-ACK feedback apparatus 300. The apparatus 300 includes: a first determining module 301 for determining a dynamic feedback interval of the HARQ-ACK; and a feedback module 302 for each The feedback interval ends to feed back the corresponding HARQ-ACK.

In this embodiment, the first determining module 301 is further configured to: select a dynamic feedback interval of one HARQ-ACK from the dynamic feedback intervals of the multiple configured multiple HARQ-ACKs; or acquire the autonomously determined by the terminal. Dynamic feedback interval of the HARQ-ACK; or, according to the path loss measurement of the terminal, the dynamic feedback interval of the HARQ-ACK is obtained; or, according to the HARQ-ACK statistics, the dynamic feedback interval of the HARQ-ACK is obtained; or, according to the terminal The feedback measurement yields a dynamic feedback interval of the HARQ-ACK.

In this embodiment, optionally, the apparatus 300 further includes: a first notification module, configured to notify the terminal of the dynamic feedback interval of the HARQ-ACK by using a system broadcast or a specific signaling.

In this embodiment, optionally, the feedback interval includes at least one of the following: a time interval between two HARQ-ACKs received by the terminal; a time interval from the initial transmission of the data packet to the HARQ-ACK; The HARQ-ACK starts, corresponds to the HARQ process, the time interval from the start of the transmission of the first data packet by the terminal, to the time interval at which the HARQ-ACK is received, and the time interval from the transmission of the current data packet by the terminal to the transmission of the next repeated data packet; The time interval between the end of the packet transmission and the corresponding HARQ-ACK.

In this embodiment, the dynamic feedback interval of the HARQ-ACK can be configured, thereby saving unnecessary signaling overhead and reducing the HARQ implementation process. In addition, the terminal side does not have to perform HARQ-ACK detection after each transmission, which reduces the processing complexity of the receiving end, and is beneficial to the IoT terminal operating in the power saving mode.

Referring to FIG. 4, FIG. 4 shows a dynamic HARQ-ACK feedback device 400. The device 400 includes: a second determining module 401, configured to determine a dynamic feedback interval of the HARQ-ACK; and a reading module 402, configured to The dynamic feedback interval of the HARQ-ACK reads the HARQ-ACK in the corresponding time slot.

In this embodiment, optionally, the second determining module is further configured to: determine a dynamic feedback interval of the HARQ-ACK autonomously.

In this embodiment, optionally, the second determining module is further configured to: determine a dynamic feedback interval of the HARQ-ACK according to a path loss measurement of the terminal.

In this embodiment, optionally, the apparatus further includes: a second notification module, configured to feed back the determined sequence number corresponding to the dynamic feedback interval of the HARQ-ACK to the network side by using high layer or physical layer signaling.

Referring to FIG. 5, FIG. 5 illustrates a dynamic HARQ-ACK feedback device including a first bus 500, a transceiver 501, a first antenna 502, a first bus interface 503, a first processor 504, and a first memory. 505.

The first transceiver 501 receives and transmits data under the control of the first processor 504.

The first processor 504 is configured to read a program in the first memory 505, and perform the following process: determining a dynamic feedback interval of the HARQ-ACK; and feeding back a corresponding HARQ-ACK at the end of each of the feedback intervals.

In FIG. 5, a bus architecture (represented by first bus 500) can include any number of interconnected buses and bridges, and first bus 500 will include one or more processors and first represented by first processor 504. The various circuits of the memory represented by memory 505 are linked together. The first bus 500 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein. The first bus interface 503 provides an interface between the first bus 500 and the first transceiver 501. The first transceiver 501 can be an element or a plurality of elements, such as a plurality of receivers and transmitters, providing means for communicating with various other devices on a transmission medium. The data processed by the first processor 504 is transmitted over the wireless medium by the first transceiver 501 and the first antenna 502. Further, the first antenna 502 also receives data and transmits the data to the first process via the first transceiver 501. 504.

The first processor 504 is responsible for managing the first bus 500 and the usual processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. The first memory 505 can be used for data used by the first storage processor 504 in performing operations. Specifically, the first processor 504 can be a CPU, an ASIC, an FPGA, or a CPLD.

In this embodiment, the first processor 504 is further configured to: select a dynamic feedback interval of one HARQ-ACK from a dynamic feedback interval of multiple configured HARQ-ACKs; or acquire a HARQ determined by the terminal autonomously. - dynamic feedback interval of the ACK; or the dynamic feedback interval of the HARQ-ACK is obtained according to the path loss measurement of the terminal; or the dynamic feedback interval of the HARQ-ACK is obtained according to the HARQ-ACK statistics; or The dynamic feedback interval of the HARQ-ACK.

In this embodiment, the first transceiver 501 is further configured to: notify the terminal of the dynamic feedback interval of the HARQ-ACK by using system broadcast or user-specific signaling.

Please refer to FIG. 6. FIG. 6 provides a dynamic HARQ-ACK feedback device, including: a first bus 600, a transceiver 601, a first antenna 602, a first bus interface 603, a first processor 604, and a first Memory 605.

The second transceiver 601 receives and transmits data under the control of the second processor 604.

The second processor 604 is configured to read a program in the second memory 605, and perform the following process: determining a dynamic feedback interval of the HARQ-ACK; according to the dynamic feedback interval of the HARQ-ACK The time slot should be read HARQ-ACK.

In FIG. 6, the bus architecture (represented by the second bus 600) may include any number of interconnected buses and bridges, and the second bus 600 will include one or more processors and seconds represented by the second processor 604. The various circuits of the memory represented by memory 605 are linked together. The second bus 600 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art and, therefore, will not be further described herein. The second bus interface 603 provides an interface between the second bus 600 and the second transceiver 601. The second transceiver 601 can be an element or a plurality of elements, such as a plurality of receivers and transmitters, providing means for communicating with various other devices on a transmission medium. The data processed by the second processor 604 is transmitted over the wireless medium by the second transceiver 601 and the second antenna 602. Further, the second antenna 602 also receives the data and transmits the data to the second processing via the second transceiver 601. 604.

The second processor 604 is responsible for managing the second bus 600 and the usual processing, and can also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. The second memory 605 can be used to store data used by the second processor 604 when performing operations. Specifically, the second processor 604 can be a CPU, an ASIC, an FPGA, or a CPLD.

In this embodiment, optionally, the second processor 604 is further configured to autonomously determine a dynamic feedback interval of the HARQ-ACK.

In this embodiment, optionally, the second processor 604 is further configured to determine a dynamic feedback interval of the HARQ-ACK according to a path loss measurement of the terminal.

In this embodiment, the second transceiver 601 is further configured to feed back the determined sequence number corresponding to the dynamic feedback interval of the HARQ-ACK to the network side by using high layer or physical layer signaling.

The technical solution provided by the embodiment of the present disclosure can configure a dynamic feedback interval of the HARQ-ACK. Thereby saving unnecessary signaling overhead and reducing the HARQ implementation process. In addition, the terminal side does not have to perform HARQ-ACK detection after each transmission, which reduces the processing complexity of the receiving end, and is beneficial to the IoT terminal operating in the power saving mode.

It is to be understood that the phrase "one embodiment" or "an embodiment" or "an" or "an" Thus, "in one embodiment" or "in an embodiment" or "an" In addition, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present disclosure, it should be understood that the size of the serial numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present disclosure. The implementation process constitutes any limitation.

Additionally, the terms "system" and "network" are used interchangeably herein.

It should be understood that the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

In the embodiments provided by the present disclosure, it should be understood that "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.

In the several embodiments provided by the present disclosure, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

In addition, each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or hardware plus software. The form of the functional unit is implemented.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the transceiving method of the various embodiments of the present disclosure. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, and the program code can be stored. Medium.

The above is an alternative embodiment of the present disclosure, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present disclosure. Within the scope of protection of the present disclosure.

Claims

A dynamic hybrid automatic repeat request acknowledgement information HARQ-ACK feedback method includes:

The network side determines a dynamic feedback interval of the HARQ-ACK;

The network side feeds back a corresponding HARQ-ACK at the end of each of the feedback intervals.
The method according to claim 1, wherein the network side determines a dynamic feedback interval of the HARQ-ACK, including:

The network side selects a dynamic feedback interval of one HARQ-ACK from dynamic feedback intervals of multiple configured HARQ-ACKs; or

Obtaining, by the network side, a dynamic feedback interval of the HARQ-ACK determined by the terminal autonomously; or

The network side obtains a dynamic feedback interval of the HARQ-ACK according to a path loss measurement to the terminal; or

The network side obtains a dynamic feedback interval of the HARQ-ACK according to HARQ-ACK statistics; or

The network side obtains a dynamic feedback interval of the HARQ-ACK according to the terminal feedback measurement amount.
The method of claim 1 wherein the method further comprises:

The network side notifies the dynamic feedback interval of the HARQ-ACK by the system broadcast or user-specific signaling.
The method according to any one of claims 1 to 3, wherein the feedback interval comprises at least one of the following:

The time interval between two HARQ-ACKs received by the terminal;

The time interval from the initial transmission of the packet to the HARQ-ACK;

The time interval from the first packet of the HARQ process to the HARQ-ACK from the last HARQ-ACK received;

The time interval from the transmission of the current data packet by the terminal to the transmission of the next duplicate data packet;

The time interval between the end of a group of data transmissions and the corresponding HARQ-ACK.
A dynamic hybrid automatic repeat request acknowledgement information HARQ-ACK feedback method includes:

The terminal determines a dynamic feedback interval of the HARQ-ACK;

The terminal reads in a corresponding time slot according to the dynamic feedback interval of the HARQ-ACK HARQ-ACK.
The method according to claim 5, wherein the terminal determines a dynamic feedback interval of the HARQ-ACK, including:

The terminal autonomously determines a dynamic feedback interval of the HARQ-ACK.
The method according to claim 6, wherein the terminal autonomously determines a dynamic feedback interval of the HARQ-ACK, including:

The terminal determines a dynamic feedback interval of the HARQ-ACK according to a path loss measurement of the terminal.
The method of claim 6 further comprising:

The terminal feeds back the determined sequence number corresponding to the dynamic feedback interval of the HARQ-ACK to the network side through high layer or physical layer signaling.
The method according to any one of claims 5 to 8, wherein the feedback interval comprises at least one of the following:

The time interval between two HARQ-ACKs received by the terminal;

The time interval from the initial transmission of the packet to the HARQ-ACK;

The time interval from the first packet of the HARQ process to the HARQ-ACK from the last HARQ-ACK received;

The time interval from the transmission of the current data packet by the terminal to the transmission of the next duplicate data packet;

The time interval between the end of a group of data transmissions and the corresponding HARQ-ACK.
A dynamic hybrid automatic repeat request acknowledgement information HARQ-ACK feedback device includes:

a first determining module, configured to determine a dynamic feedback interval of the HARQ-ACK;

And a feedback module, configured to feed back the corresponding HARQ-ACK at the end of each of the feedback intervals.
The apparatus of claim 10, wherein the first determining module is further configured to:

Selecting a dynamic feedback interval of one HARQ-ACK from a dynamic feedback interval of a plurality of pre-configured HARQ-ACKs; or

Obtaining a dynamic feedback interval of the HARQ-ACK determined by the terminal autonomously; or

Obtaining a dynamic feedback interval of the HARQ-ACK according to a path loss measurement of the terminal; or

Obtaining a dynamic feedback interval of the HARQ-ACK according to ARQ-ACK statistics; or

The dynamic feedback interval of the HARQ-ACK is obtained according to the terminal feedback measurement.
The apparatus of claim 10 further comprising:

The first notification module is configured to notify the terminal of the dynamic feedback interval of the HARQ-ACK by using a system broadcast or a specific signaling.
The apparatus according to any one of claims 10 to 12, wherein the feedback interval comprises at least one of the following:

The time interval between two HARQ-ACKs received by the terminal;

The time interval from the initial transmission of the packet to the HARQ-ACK;

The time interval from the first packet of the HARQ process to the HARQ-ACK from the last HARQ-ACK received;

The time interval from the transmission of the current data packet by the terminal to the transmission of the next duplicate data packet;

The time interval between the end of a group of data transmissions and the corresponding HARQ-ACK.
A dynamic hybrid automatic repeat request acknowledgement information HARQ-ACK feedback device includes:

a second determining module, configured to determine a dynamic feedback interval of the HARQ-ACK;

And a reading module, configured to read the HARQ-ACK in a corresponding time slot according to the dynamic feedback interval of the HARQ-ACK.
The apparatus of claim 14, wherein the second determining module is further for: autonomously determining a dynamic feedback interval of the HARQ-ACK.
The apparatus according to claim 15, wherein the second determining module is further configured to: determine a dynamic feedback interval of the HARQ-ACK according to a path loss measurement of the terminal.
The apparatus of claim 15 further comprising:

The second notification module is configured to feed back the determined sequence number corresponding to the dynamic feedback interval of the HARQ-ACK to the network side by using high layer or physical layer signaling.
The apparatus according to any one of claims 14 to 17, wherein the feedback interval comprises at least one of the following:

The time interval between two HARQ-ACKs received by the terminal;

The time interval from the initial transmission of the packet to the HARQ-ACK;

The time interval from the first packet of the HARQ process to the HARQ-ACK from the last HARQ-ACK received;

The time interval from the transmission of the current data packet by the terminal to the transmission of the next duplicate data packet;

The time interval between the end of a group of data transmissions and the corresponding HARQ-ACK.
A dynamic hybrid automatic repeat request acknowledgement information HARQ-ACK feedback device includes:

a first processor, a first bus, and a first memory, wherein the first memory stores programs and data, and the first processor and the first memory are connected together by the first bus, the A processor for reading a program and data stored in the first memory to perform the method of any of claims 1-4.
A dynamic hybrid automatic repeat request acknowledgement information HARQ-ACK feedback device includes:

a second processor, a second bus, and a second memory, wherein the second memory stores programs and data, and the second processor and the second memory are connected together by the second bus, the A second processor is operative to read the program and data stored in the second memory to perform the method of any of claims 5-9.
A non-volatile storage medium storing programs and data on the non-volatile storage medium, the processor implementing the processing according to claims 1-4 when the program and data are executed by a processor One of the methods described.
A non-volatile storage medium storing programs and data on the non-volatile storage medium, the processor being implemented according to claims 5-9 when the programs and data are executed by a processor One of the methods described.