CN110557840A - method and equipment for activating semi-persistent scheduling hybrid automatic repeat request feedback - Google Patents

Abstract

The application discloses a method for activating semi-persistent scheduling hybrid automatic repeat request feedback, which comprises the following steps: the physical downlink control channel comprises an indication for activating semi-static scheduling configuration; the physical downlink control channel also comprises a response time indication which is used for representing the relative time position between the first time interval and the second time interval; the length of the first time interval is K multiplied by T, wherein K is a natural number, T is a period of the semi-static scheduling configuration, and the length of the period is a downlink time unit; and the second time interval is used for feeding back HARQ-ACK information corresponding to the K physical downlink shared channels configured by the semi-persistent scheduling in the first time interval, and the length of the second time interval is one uplink time unit. The application also comprises the terminal equipment and the network equipment applying the method. The method and the device solve the problems of uneven coverage of the short-time response signal of the configuration period of the SPS scheduling and poor uplink channel multiplexing capability.

Description

A method and device for activating semi-persistent scheduling hybrid automatic retransmission request feedback

technical field

The present application relates to the field of mobile communication technologies, and in particular, to a method and device for activating semi-persistent scheduling hybrid automatic repeat request feedback.

Background technique

Semi-Persistent Scheduling (SPS, Semi-Persistent Scheduling), which is different from sending physical downlink control information to the terminal equipment (UE) every time PDSCH or PUSCH is scheduled during dynamic scheduling, allows PDSCH or PUSCH to be scheduled through one physical downlink control channel. resources are periodically allocated to a specific terminal device. A network device (such as a base station) specifies the radio resource (herein referred to as SPS resource) used by the terminal device through the PDCCH, and the terminal device uses the SPS resource to receive or send data every time a cycle passes. The base station does not need to issue the PDCCH to designate the allocated resources. Due to the "once allocation, multiple use" feature of SPS scheduling, the PDCCH overhead is reduced. In the current system, at most one SPS is configured for a terminal device in a cell group, and the parameters included in one SPS configuration include the period, the number of HARQ processes, the PUCCH resources, and the used MCS table.

The SPS configuration information is configured by the base station to the terminal device through RRC signaling. The minimum value of the period of the SPS configuration is 10ms. After the terminal device receives the configuration information, the corresponding resources cannot be used immediately. Only after the base station activates the SPS configuration through the PDCCH, the terminal device can receive or send data in the corresponding resources according to the period of the SPS configuration. If the terminal device receives the indication that the base station releases the SPS configuration through the PDCCH, the terminal device stops receiving or sending data on the resources corresponding to the SPS configuration.

For time-sensitive networks that need to support services with very low latency requirements, the service duration may not be an integer multiple of symbols, time slots or subframes. The NR system supports service types with a short configuration period for terminal equipment. For example, the SPS support period is 2 symbols, 7 symbols or 1 slot. After the SPS configuration is activated, the terminal device detects the PDSCH on the SPS configuration resource according to the period, and determines the time to feed back the HARQ-ACK according to the time indicated by the PDCCH of the activated SPS configuration. Compared with the PDSCH corresponding to the SPS configuration, the period of the SPS configuration and the division method of the uplink time slot carrying the HARQ-ACK are different. This results in uneven distribution of the number of HARQ-ACKs in the uplink time slots.

SUMMARY OF THE INVENTION

The present application proposes a feedback method and device for activating a semi-persistent scheduling hybrid automatic repeat request, which solves the problems of uneven coverage of response signals in a short configuration period of SPS scheduling and poor uplink channel multiplexing capability.

An embodiment of the present application proposes a feedback method for activating a semi-persistent scheduling hybrid automatic retransmission request, which includes the following steps:

The physical downlink control channel contains an indication to activate the semi-persistent scheduling configuration;

The physical downlink control channel further includes a response time indication, which is used to indicate the relative time position between the first time period and the second time period;

The length of the first period is K×T, where K is a natural number, T is the period of the semi-persistent scheduling configuration, and the length of the period is one downlink time unit;

The second period is used to feed back HARQ-ACK information corresponding to the K physical downlink shared channels configured by the semi-persistent scheduling in the first period, and the length of the second period is one uplink time unit.

Preferably, the starting point of the first time period is located at the starting point of the downlink time unit M, which satisfies:

(the number of downlink time units in each radio frame×system radio frame number+M)=[(the number of downlink time units in each radio frame×the initial effective radio frame number of semi-persistent scheduling+the initial effective downlink of semi-persistent scheduling time unit number)+N×K×T]modulo (1024×the number of downlink time units in each radio frame); where N is a positive integer.

Preferably, the length of the downlink time unit is an integer multiple of the downlink time slot or an integer multiple of the downlink sub-slot; the length of the uplink time unit is an integer multiple of the uplink time slot, or the length of the uplink sub-slot Integer multiple; the length of the downlink time unit and the length of the uplink time unit are equal, or the length of the downlink time unit and the length of the uplink time unit are not equal.

Further preferably, the response time indication represents a relative time position between the end point of the first period and the start point of the second period.

Further preferably, the response time indication represents a relative time position between the end point of the uplink time unit corresponding to the end point of the first time period and the start point of the second time period.

In any embodiment of the present application, further, the downlink control signaling further includes a value of K, which is used to determine the length of the first period.

In any one of the embodiments of the present application, further, the second time period includes HARQ-ACK values respectively acknowledging the K physical downlink shared channels.

In any one of the embodiments of the present application, further, the second time period includes HARQ-ACK values for K physical downlink shared channel bundled acknowledgements.

The method of the embodiment of the present application, which is used in a terminal device, includes the following steps:

receiving the physical downlink control channel;

determining the first time period and the second time period;

The physical downlink shared channel in the first time period is received, and the HARQ-ACK information corresponding to the physical downlink shared channel is sent in the second time period.

The method of the embodiment of the present application, which is applied to a network device, includes the following steps:

sending the physical downlink control channel;

The physical downlink shared channel is sent in the first time period, and the HARQ-ACK information corresponding to the physical downlink shared channel is received in the second time period.

An embodiment of the present application further proposes a terminal device, using the method described in any one of the embodiments of the present application, including a downlink receiving module, a downlink determining module, and an uplink sending module.

The downlink receiving module is configured to receive the physical downlink control channel and the physical downlink shared channel.

The downlink determination module is configured to determine the K physical downlink shared channels in the first time period according to the K and T values, and determine the time position of the second time period according to the response time indication.

The uplink sending module is configured to send an automatic retransmission request response in the second time period.

An embodiment of the present application further provides a network device for use in the method described in any one of the embodiments of the present application, including an uplink receiving module, an uplink determining module, and a downlink sending module.

The downlink sending module is configured to send the physical downlink control channel and the physical downlink shared channel.

The uplink determination module is configured to determine the K physical downlink shared channels in the first period according to the K and T values, and determine the position of the second period according to the response time indication.

The uplink receiving module is configured to receive an automatic retransmission request response in the second sub-slot.

The above-mentioned at least one technical solution adopted in the embodiments of the present application can achieve the following beneficial effects:

The present invention solves the problem of how to determine the feedback resources corresponding to HARQ-ACK when the SPS period is small, and aims to solve the problem that the coverage of the PUCCH channel is unbalanced in time, which affects the system performance and efficiency, and can enhance the terminal The transmission power efficiency of the equipment, enhance the channel multiplexing capability of the terminal equipment, and improve the overall efficiency of the system.

Description of drawings

The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the attached image:

Fig. 1 is a schematic diagram of SPS feedback when the length of the uplink time unit and the downlink time unit are not equal;

2 is a schematic diagram of SPS feedback when the uplink time unit and the downlink time unit are equal in length and the SPS period is short;

3 is a flowchart of an embodiment of the method of the application;

4 is a schematic diagram of an embodiment of the method of the application according to the first response time indication feedback;

FIG. 5 is a schematic diagram of an embodiment of the method of the application according to the second type of response time indication feedback;

FIG. 6 is a flowchart of an embodiment in which the method of the present application is applied to a terminal device;

FIG. 7 is a flowchart of an embodiment in which the method of the present application is applied to a network device;

FIG. 8 is a schematic diagram of a device embodiment of the present application.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

The technical solutions provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

For time-sensitive network (TSN, Sensitive Networking) services, there are multiple periodic and urgency priority data streams, and while supporting irregular burst emergency services, TSN needs to support services with low latency requirements. The traffic under the TSN network may not be an integer multiple of symbols, time slots or subframes. Therefore, the NR system will support service types with a short configuration period for terminal equipment. When the terminal equipment feeds back HARQ-ACK based on sub-slots, it does not restrict downlink PDSCH transmission based on sub-slots. Therefore, the down-link time slots are divided into "virtual" sub-slots according to the division method of uplink sub-slots. However, for the PDSCH configured by the SPS, the period of the SPS configuration and the sub-slot division manner of the uplink time slot may be different. Assuming that the period length of the SPS configuration is T, one downlink time slot is divided into several downlink time units with T as the granularity (the length of the downlink time unit is T); one uplink time slot is divided into several uplink time units. The length of the downstream time unit and the upstream time unit may or may not be equal.

If the base station receives the PDCCH in the time slot (or subslot) n according to the configuration of the SPS, the terminal equipment feeds back the HARQ-ACK corresponding to the PDSCH in the time slot (or subslot) n+k.

If the HARQ-ACK is based on time slots, the terminal device receives the PDSCH configured by the SPS in time slot n, and the terminal device feeds back the HARQ-ACK corresponding to the PDSCH in time slot n+k. The value of k is determined by the "PDSCH-to-HARQ-timing-indicator" field in the PDCCH, or determined by the higher layer signaling "dl-DataToUL-ACK". If the value of k is determined by "PDSCH-to-HARQ-timing-indicator" in the PDCCH, this field indicates that the value of k is one of multiple values configured by "dl-DataToUL-ACK".

If the HARQ-ACK is based on sub-slots, the terminal device receives the last symbol of the PDSCH configured by the SPS in sub-slot n, and the terminal device feeds back the HARQ-ACK corresponding to the PDSCH in sub-slot n+k. The value of k is determined by the "PDSCH-to-HARQ-timing-indicator" field in the PDCCH, or determined by the higher layer signaling "dl-DataToUL-ACK". If the value of k is determined by "PDSCH-to-HARQ-timing-indicator" in the PDCCH, this field indicates that the value of k is one of multiple values configured by "dl-DataToUL-ACK".

FIG. 1 is a schematic diagram of SPS feedback when the lengths of the uplink time unit and the downlink time unit are not equal.

Regarding SPS support for very short period configuration, there are the following questions:

If the length of the downlink time unit and the uplink time unit are not equal, the way of determining the HARQ-ACK feedback according to the "virtual" subslot (uplink time unit) where the last symbol of the PDSCH is located and the k value indicated by the DCI may lead to HARQ-ACK feedback of the SPSPDSCH. The ACK is not balanced in time, which affects the PUCCH coverage performance.

FIG. 1 exemplifies the case where the length of the downlink time unit is 2 symbols and the length of the uplink time unit is 7 symbols. Assuming that the PDCCH that activates SPS indicates the uplink subslot (virtual subslot) corresponding to the last symbol of the PDSCH and the time slot number of the uplink subslot for which HARQ-ACK is fed back is different by 1, then the SPS is fed back on PUCCH-1 HARQ-ACK of PDSCH(1), SPSPDSCH(2), SPS PDSCH(3), and feedback HARQ of SPS PDSCH(4), SPS PDSCH(5), SPSPDSCH(6), SPS PDSCH(7) on PUCCH-2 -ACK. The amount of HARQ-ACK information fed back on PUCCH-1 and PUCCH-2 is not balanced, resulting in different coverage of PUCCH channels at different times, which affects system performance and efficiency.

FIG. 2 is a schematic diagram of SPS feedback when the uplink time unit and the downlink time unit have the same length and the SPS period is short.

Regarding SPS support for very short period configuration, there are also the following questions:

FIG. 2 shows the case where the SPS configuration period is 2 symbols. Even if the length of the downlink time unit and the uplink time unit are the same, if the period of the SPS configuration is short, the PUCCH channel transmission power efficiency of the terminal device is low, and the channel multiplexing capability is poor, which affects the overall efficiency of the system.

When the period of the SPS configuration is short, if each SPS has a corresponding PUCCH resource for HARQ-ACK feedback, the PUCCH used to feed back the HARQ-ACK corresponding to the SPS PDSCH will be very "dense", but each PUCCH There is less HARQ-ACK information carried in the . Therefore, the transmit power efficiency of the terminal equipment is very low, and the channel multiplexing capability is poor, which affects the overall efficiency of the system.

FIG. 3 is a flowchart of an embodiment of the method of the present application.

An embodiment of the present application proposes a feedback method for activating a semi-persistent scheduling hybrid automatic retransmission request, which includes the following steps:

Step 101, the physical downlink control channel includes an instruction to activate the semi-persistent scheduling configuration;

The SPS support period is 2 symbols, 7 symbols or 1 slot. Taking the period of the SPS configuration as 2 symbols as an example, after the SPS configuration is activated, the terminal device detects the PDSCH on the SPS configuration resource with a period of 2 symbols, and determines the feedback according to the time indicated by the activation of the PDCCH of the SPS configuration. Time of HARQ-ACK for each SPS PDSCH.

For example, DCI format 1_0 or DCI format 1_1 can be used to activate the SPS configuration.

Step 102, the physical downlink control channel further includes a response time indication, which is used to indicate the relative time position between the first time period and the second time period;

The response time of the HARQ-ACK corresponding to the PDSCH sent according to the SPS configuration is indicated by the DCI format 1_0 or DCI format 1_1 used to activate the SPS configuration.

For the case where the SPS configuration is activated with DCI format 1_0, the DCI field includes "PDSCH-to-HARQ-timing-indicator" to indicate the value of k, which corresponds to {1, 2, 3, 4, 5, 6, 7 , 1 of 8}.

For the case where the SPS configuration is activated with DCI format 1_1, if the higher layer signaling "dl-DataToUL-ACK" is configured with multiple values, the DCI format 1_1 includes the "PDSCH-to-HARQ-timing-indicator" field, which indicates k The value is one of the multiple values configured by "dl-DataToUL-ACK"; if only one value is configured in the upper layer signaling "dl-DataToUL-ACK", the DCI format 1_1 does not include "PDSCH-to-HARQ- timing-indicator" field, the value of k is the value configured by "dl-DataToUL-ACK".

Step 103, determine the length and position of the first time period;

The length of the first period is K×T, where K is a natural number, T is the period of the semi-persistent scheduling configuration, and the length of the period is one downlink time unit;

The starting point of the first time period is located at the starting point of the downlink time unit M, which satisfies:

(the number of downlink time units in each radio frame×system radio frame number+M)=[(the number of downlink time units in each radio frame×the initial effective radio frame number of semi-persistent scheduling+the initial effective downlink of semi-persistent scheduling time unit number)+N×K×T]modulo(1024×the number of downlink time units in each radio frame) (Formula 1)

N is a positive integer, indicating that the starting point of the downlink time unit M is the starting point of the Nth first period since the semi-persistent scheduling configuration is activated.

If K=1, since the length of the downlink time unit is defined as the length of the semi-persistent scheduling period, the start point of the first period is located at the start point of each downlink time unit M. The starting point of the first time period defined above satisfies Formula 1, and the length of the first time period is K×T, the purpose is to “aggregate” all PDSCHs of the SPS in K cycles into one channel feedback of the second time period.

Step 104, determine the length and position of the second time period;

The second period is used to feed back HARQ-ACK information corresponding to the K physical downlink shared channels configured by the semi-persistent scheduling in the first period, and the length of the second period is one uplink time unit.

The response time indication indicates the relative time position between the end point of the first period and the start point of the second period, or the response time indication indicates the uplink time corresponding to the end point of the first period The relative time position between the end point of the cell and the start point of the second time period.

Preferably, the length of the downlink time unit is an integer multiple of the downlink time slot or an integer multiple of the downlink sub-slot; the length of the uplink time unit is an integer multiple of the uplink time slot, or the length of the uplink sub-slot Integer multiple; the length of the downlink time unit and the length of the uplink time unit are equal, or the length of the downlink time unit and the length of the uplink time unit are not equal.

The second period is one uplink time unit. The uplink time unit is the time position granularity of the channel used to transmit the HARQ-ACK. Usually timeslots or subslots. In a certain uplink time unit, at most one channel matching the secondary uplink time unit can be used for sending HARQ-ACK information.

FIG. 4 is a schematic diagram of an embodiment of the method of the present application that is fed back according to the first response time indication.

When the period of the SPS configuration is T, after the SPS configuration is activated, the terminal device detects the PDSCH on the SPS configuration resource with T as the period, and determines the HARQ-feedback of each SPS PDSCH according to the time indicated by the activation of the PDCCH of the SPS configuration. ACK time. In this embodiment, the HARQ-ACK corresponding to the PDSCH configured by the SPS in the first period is all fed back on the same PUCCH in the second period. By configuring the length of the first period, the coverage of the PUCCH channel can be prevented from being different at different times, the transmission power efficiency of the terminal device can be enhanced, the channel multiplexing capability of the terminal device can be enhanced, and the overall system efficiency can be improved.

First, the downlink time unit includes 2 symbols (OS), and the uplink time unit includes 7 symbols as an example. In the embodiment of FIG. 4 , it is assumed that the period T of the SPS configuration is one downlink time unit, and K=4.

After acquiring the physical downlink control channel configured to activate the SPS, the terminal device detects the PDSCH of the SPS once every 2 symbols. The starting point of the first period is the starting point of the first downlink time unit of the time slot n, and the length of the first period is 4 downlink time units.

The response time indication represents a relative time position between an end point of the first time period and a start point of the second time period. If the PDCCH that activates the SPS configuration indicates how many uplink time units the difference between the end point of the first period and the start point of the second period is, assuming that the difference is 1 uplink time unit, k=1, then as shown in the figure As shown in 4, the HARQ-ACK corresponding to the PDSCH configured by the SPS is dispersed in each PUCCH according to the length of the first time period, which can solve the problem that the coverage of the PUCCH channel is different at different times and affect the system performance and efficiency, and can also be used. Enhance the transmission power efficiency of the terminal equipment, enhance the channel multiplexing capability of the terminal equipment, and improve the overall efficiency of the system.

FIG. 5 is a schematic diagram of an embodiment of the method of the present application that is fed back according to the second type of response time indication.

Further preferably, the response time indication represents a relative time position between the end point of the uplink time unit corresponding to the end point of the first time period and the start point of the second time period.

The uplink time unit corresponding to the end point of the first time period refers to the uplink time unit in which the end point of the first time period is located if the downlink time slot is divided according to the uplink time unit. If the PDCCH that activates the SPS configuration indicates how many uplink time units the difference between the end point of the uplink time unit where the end point of the first period is located and the start point of the second period is, assuming that the difference is 1 for the time unit, k=1, then as shown in Figure 5, the HARQ-ACK corresponding to the PDSCH configured by the SPS is dispersed in each PUCCH according to the length of the first period of time, which can also solve the problem that the coverage of the PUCCH channel varies at different times and affects the system performance. It can improve the transmission power efficiency of the terminal equipment, enhance the channel multiplexing capability of the terminal equipment, and improve the overall efficiency of the system.

FIG. 6 is a flowchart of an embodiment in which the method of the present application is applied to a terminal device.

The method of the embodiment of the present application, which is used in a terminal device, includes the following steps:

Step 201, receiving the physical downlink control channel;

In step 201, the terminal device obtains a physical downlink control channel, the physical downlink control channel is used to activate the SPS configuration, and the period of the SPS configuration is T;

After receiving the SPS configuration, the terminal device activates the SPS configuration through the PDCCH, and receives data in the corresponding resources according to the SPS cycle.

The parameters included in the SPS configuration include the period T, the number of HARQ processes, the PUCCH resources, and the MCS table used.

Step 202, determining the first time period and the second time period;

The length of the first period is K×T, where K is a natural number.

The starting point of the first time period is located at the starting point of the downlink time unit M, which satisfies the formula (1).

The physical downlink control channel includes a response time indication, which is used to indicate the time difference between the end point of the first time period and the start point of the second time period; or, the physical downlink control channel indicates the first time period The time difference between the end point of the uplink time unit where the end point of , and the start point of the second time period.

Preferably, the time difference is represented by the number of uplink time units.

The uplink time unit is the time type of HARQ-ACK feedback, such as PUCCH.

Step 203: Receive the physical downlink shared channel in the first time period, and send HARQ-ACK information corresponding to the physical downlink shared channel in the second time period.

The terminal device transmits a target HARQ-ACK within a starting point of the second period, the target HARQ-ACK corresponding to the PDSCH for which the SPS is configured within the first period.

For example, the second time period includes HARQ-ACK values that are respectively responded to the K physical downlink shared channels.

For another example, the second time period includes HARQ-ACK values for the K physical downlink shared channel bundled acknowledgments.

In order to reduce the feedback burden of the HARQ-ACK information, the terminal device may send the bundled information of the respective HARQ-ACKs of the PDSCHs in the first time period within the starting point of the second time period. The bundling process referred to here may be, for example, performing an "AND" logic operation. When the respective HARQ-ACKs of the PDSCHs in the first period are all ACKs, the bundled HARQ-ACKs are ACKs. As long as one of the HARQ-ACKs of the PDSCHs in the first period is NACK, it will be NACK after bundling.

FIG. 7 is a flowchart of an embodiment of applying the method of the present application to a network device.

The method of the embodiment of the present application, which is applied to a network device, includes the following steps:

Step 301, sending the physical downlink control channel;

The base station configures SPS resources for the terminal equipment through RRC signaling. In this embodiment, the terminal device acquires the PDCCH for activating the semi-persistent scheduling configuration. Optionally, the PDCCH is scrambled with CS-RNTI.

Step 302, determining the first time period and the second time period;

The length of the first period is K×T, where K is a natural number.

The starting point of the first time period is located at the starting point of the downlink time unit M, which satisfies the formula (1).

The physical downlink control channel includes a response time indication, which is used to indicate the time difference between the end point of the first time period and the start point of the second time period; or, the physical downlink control channel indicates the first time period The time difference between the end point of the uplink time unit where the end point of , and the start point of the second time period.

Preferably, the time difference is represented by the number of uplink time units.

The uplink time unit is the time type of HARQ-ACK feedback, such as PUCCH.

In any embodiment of the present application, further optionally, the downlink control signaling further includes a value of K, which is used to determine the length of the first time period. Optionally, the terminal device receives second information, where the second information is used to determine the value of K.

Optionally, the value of K is included in higher layer signaling.

As mentioned above, the PDSCH configured by SPS takes the length of the first period as the granularity, and the resources for feeding back HARQ-ACK are located in the same PUCCH, which can prevent the coverage of the PUCCH channel from being different at different times, enhance the transmission power efficiency of the terminal equipment, and enhance the The channel multiplexing capability of the terminal equipment improves the overall efficiency of the system. By configuring the length of the first period, the density of the PUCCH for the SPS configuration can be adjusted, and the number of HARQ-ACKs of the PDSCH of the SPS configuration on each PUCCH can be adjusted. The length of the first period can be adjusted according to the value of K. The value of K may be sent by the base station to the terminal device through the second information, so as to determine the starting point of the second period of HARQ-ACK feedback corresponding to the PDSCH of the SPS configuration.

Step 303: Send the physical downlink shared channel in the first time period, and receive HARQ-ACK information corresponding to the physical downlink shared channel in the second time period.

FIG. 8 is a schematic diagram of a device embodiment of the present application.

An embodiment of the present application further proposes a terminal device 10 , which includes a downlink receiving module 11 , a downlink determination module 12 , and an uplink transmission module 13 using the method described in any one of the embodiments of the present application.

The downlink receiving module is configured to receive the physical downlink control channel and the physical downlink shared channel.

The downlink determination module is configured to determine the K physical downlink shared channels in the first time period according to the K and T values, and determine the time position of the second time period according to the response time indication.

The uplink sending module is configured to send an automatic retransmission request response in the second time period.

An embodiment of the present application further provides a network device 20 for use in the method described in any one of the embodiments of the present application, including an uplink receiving module 23 , an uplink determining module 22 , and a downlink sending module 21 .

The downlink sending module is configured to send the physical downlink control channel and the physical downlink shared channel.

The uplink determination module is configured to determine the K physical downlink shared channels in the first period according to the K and T values, and determine the position of the second period according to the response time indication.

The uplink receiving module is configured to receive an automatic retransmission request response in the second sub-slot.

In any embodiment of the network device and the terminal device of the present application, the starting point of the first period is located at the starting point of the downlink time unit M, which satisfies the formula (1).

Preferably, the length of the downlink time unit is an integer multiple of the downlink time slot or an integer multiple of the downlink sub-slot; the length of the uplink time unit is an integer multiple of the uplink time slot, or the length of the uplink sub-slot Integer multiple; the length of the downlink time unit and the length of the uplink time unit are equal, or the length of the downlink time unit and the length of the uplink time unit are not equal.

The response time indication indicates the relative time position between the end point of the first period and the start point of the second period, or the response time indication indicates the uplink time corresponding to the end point of the first period The relative time position between the end point of the cell and the start point of the second time period.

In any one of the network device and terminal device embodiments of the present application, further, the downlink control signaling further includes a value of K, which is used to determine the length of the first time period.

In any one of the network equipment and terminal equipment embodiments of the present application, further, the second time period includes HARQ-ACK values respectively acknowledging the K physical downlink shared channels.

In any one of the network device and terminal device embodiments of the present application, further, the second time period includes HARQ-ACK values for the K physical downlink shared channel bundling responses.

The method and device of the present application can solve the problem that the coverage of the PUCCH channel is different at different times and affect the performance and efficiency of the system, and can enhance the transmission power efficiency of the terminal device, enhance the channel multiplexing capability of the terminal device, and improve the overall system. efficiency.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

It should also be noted that the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device comprising a series of elements includes not only those elements, but also Other elements not expressly listed, or which are inherent to such a process, method, article of manufacture, or apparatus are also included. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article of manufacture, or device that includes the element.

The above descriptions are merely examples of the present application, and are not intended to limit the present application. Various modifications and variations of this application are possible for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the scope of the claims of this application.

Claims (12)

1. a method for activating semi-persistent scheduling hybrid automatic retransmission request feedback, is characterized in that, The physical downlink control channel contains an indication to activate the semi-persistent scheduling configuration; The physical downlink control channel further includes a response time indication, which is used to indicate the relative time position between the first time period and the second time period; The length of the first period is K×T, where K is a natural number, T is the period of the semi-persistent scheduling configuration, and the length of the period is one downlink time unit; The second period is used to feed back HARQ-ACK information corresponding to the K physical downlink shared channels configured by the semi-persistent scheduling in the first period, and the length of the second period is one uplink time unit. 2. The method of claim 1, wherein The starting point of the first time period is located at the starting point of the downlink time unit M, which satisfies: (the number of downlink time units in each radio frame×system radio frame number+M)=[(the number of downlink time units in each radio frame×the initial effective radio frame number of semi-persistent scheduling+the initial effective downlink of semi-persistent scheduling time unit number)+N×K×T]modulo(1024×the number of downlink time units in each radio frame); where N is a positive integer. 3. The method of claim 1, wherein The length of the downlink time unit is an integer multiple of the downlink time slot or an integer multiple of the downlink sub-slot; The length of the uplink time unit is an integer multiple of the uplink time slot or an integer multiple of the uplink sub-slot; The length of the downlink time unit and the length of the uplink time unit are equal, or the length of the downlink time unit and the length of the uplink time unit are not equal. 4. The method of claim 3, wherein The response time indication represents a relative time position between an end point of the first time period and a start point of the second time period. 5. The method of claim 3, wherein The response time indication indicates a relative time position between the end point of the uplink time unit corresponding to the end point of the first time period and the start point of the second time period. 6. The method according to any one of claims 1 to 5, wherein, The downlink control signaling further includes a value of K, which is used to determine the length of the first period. 7. The method according to any one of claims 1 to 5, wherein, The second time period includes HARQ-ACK values that are respectively responded to the K physical downlink shared channels. 8. The method according to any one of claims 1 to 5, wherein, The second time period includes HARQ-ACK values for K physical downlink shared channel bundled acknowledgments. 9. The method according to any one of claims 1 to 8, which is used in a terminal device, characterized in that: receiving the physical downlink control channel; determining the first time period and the second time period; The physical downlink shared channel in the first time period is received, and the HARQ-ACK information corresponding to the physical downlink shared channel is sent in the second time period. 10. The method according to any one of claims 1 to 8, which is used in a network device, characterized in that: sending the physical downlink control channel; The physical downlink shared channel is sent in the first time period, and the HARQ-ACK information corresponding to the physical downlink shared channel is received in the second time period. 11. A terminal device, using the method according to any one of claims 1 to 10, characterized in that it comprises a downlink receiving module, a downlink determination module, and an uplink transmission module; the downlink receiving module, configured to receive the physical downlink control channel and the physical downlink shared channel; The downlink determination module is configured to determine K physical downlink shared channels in the first time period according to the K and T values, and determine the time position of the second time period according to the response time indication; The uplink sending module is configured to send an automatic retransmission request response in the second time period. 12. A network device used in the method according to any one of claims 1 to 10, characterized by comprising an uplink receiving module, an uplink determining module, and a downlink sending module; the downlink sending module, configured to send the physical downlink control channel and the physical downlink shared channel; The uplink determination module is configured to determine K physical downlink shared channels in the first time period according to the K and T values, and determine the position of the second time period according to the response time indication; The uplink receiving module is configured to receive an automatic retransmission request response in the second sub-slot.