WO2020125582A1 - Method and apparatus for scheduling hybrid automatic retransmission request process, and storage medium - Google Patents

Abstract

The present application relates to the technical field of wireless communication, and disclosed therein are a method and apparatus for scheduling a hybrid automatic retransmission request process, and a storage medium. The method comprises: when no uplink transmission signal is detected on a target uplink resource, detecting whether channel quality of a target user equipment (UE) is better than a target quality threshold, wherein the target uplink resource is an uplink resource allocated by a base station to the target UE, and the target UE is a UE enabling a uplink skipping function; and when the channel quality of the target UE is better than the target quality threshold, sending process end information to the target UE, the process end information being used to instruct the target UE to end a target hybrid automatic retrannsmission request (HARQ) process corresponding to the target uplink resource. The technical solution provided in an embodiment of the present application may prevent the waste of communication resources.

Description

Scheduling method, device and storage medium of hybrid automatic retransmission request process

This application requires the priority of the Chinese patent application filed on December 20, 2018 with the application number 201811562660.3 and the invention titled "Scheduling method, device and storage medium of the hybrid automatic repeat request process", the entire contents of which are incorporated by reference In this application.

Technical field

The present application relates to the field of wireless communication technology, and in particular, to a scheduling method, device, and storage medium for a hybrid automatic repeat request process.

Background technique

In a wireless communication system, user equipment (English: User Equipment; abbreviated as: UE) needs to send uplink data through the uplink resources allocated by the base station, where the base station allocating uplink resources to the UE is also called uplink authorization. Generally, the uplink grant may include dynamically scheduled uplink grant and semi-static scheduled uplink grant. In the dynamically scheduled uplink authorization, the UE can request uplink resources from the base station every time uplink data needs to be sent, and at the same time, the base station can allocate uplink resources to the base station according to the UE's request. In the semi-statically scheduled uplink grant, the base station can periodically allocate uplink resources to the UE, where the base station can allocate a fixed number of resource blocks to the UE in each cycle (generally called scheduling cycle) Block; Abbreviation: RB). In practical applications, for uplink authorization for dynamic scheduling and uplink authorization for semi-static scheduling, when there is no uplink data to be sent on an uplink resource allocated by the base station, the uplink skip function (English: Uplink skipping) is enabled. The UE (hereinafter referred to as the target UE) may not send uplink data on the uplink resource, thereby reducing power consumption.

In the related art, when the target UE does not send uplink data on an uplink resource allocated to it by the base station, the base station cannot detect the uplink transmission signal on the uplink resource. At this time, the base station sends a retransmission instruction message to the target UE to instruct the target UE to retransmit the hybrid automatic repeat request (English: Hybrid Automatic Repeat Request; HARQ for short) process (hereinafter referred to as the target HARQ) Process) to send the upstream data in the buffer. After sending the retransmission indication information to the target UE, if the base station still does not detect the uplink transmission signal, the base station will continue to send the retransmission indication information to the target UE until the total number of uplink transmissions corresponding to the target HARQ process reaches the maximum number of uplink transmissions until. When the total number of uplink transmissions corresponding to the target HARQ process reaches the maximum number of uplink transmissions, the target UE may end the target HARQ process.

However, when the target UE does not send uplink data on the uplink resources allocated by the base station, the transmit buffer of the target HARQ process is empty. Therefore, even if the base station sends the retransmission instruction information, the target UE cannot send uplink data to the base station Therefore, before the total number of uplink transmissions corresponding to the target HARQ process reaches the maximum number of uplink transmissions, the base station sends invalid retransmission indication information to the target UE multiple times, which causes a waste of communication resources.

Summary of the invention

Embodiments of the present application provide a scheduling method, device, and storage medium for a hybrid automatic repeat request process, which can avoid waste of communication resources. The technical solution is as follows:

In a first aspect, a scheduling method for a hybrid automatic repeat request process is provided. The method includes:

When no uplink transmission signal is detected on the target uplink resource, it is detected whether the channel quality of the target user equipment UE is better than the target quality threshold, the target uplink resource is the uplink resource allocated by the base station to the target UE, and the target UE is UE capable of uplink skip function;

When the channel quality of the target UE is better than the target quality threshold, send process end information to the target UE;

The process end information is used to instruct the target UE to end the target hybrid automatic repeat request HARQ process corresponding to the target uplink resource.

Optionally, the method further includes:

When the channel quality of the target UE is worse than the target quality threshold, and the total number of uplink transmissions corresponding to the target HARQ process is less than the maximum number of uplink transmissions, sending retransmission indication information to the target UE;

Wherein, the retransmission indication information is used to instruct the target UE to send target uplink data to the base station, where the target uplink data is data in a transmission buffer of the target HARQ process.

Optionally, after the uplink skip function enabled by the target UE is for a semi-statically scheduled uplink grant, after detecting whether the channel quality of the target UE is better than the target quality threshold, the method further includes:

When the communication service between the target UE and the base station is a low-latency communication service, determine whether the number of consecutive occurrences of the target event is greater than the target number threshold, and the target event is not allocated to the target by the base station An uplink transmission signal is detected on the uplink resource of the UE, and an event that the channel quality of the target UE is better than the target quality threshold is detected;

When the number of consecutive occurrences of the target event is greater than the target number of times threshold, the number of resource blocks RB allocated to the target UE in each scheduling period is reduced.

Optionally, after reducing the number of resource blocks RB allocated to the target UE every scheduling period, the method further includes:

When an uplink transmission signal is detected on the uplink resource allocated by the base station to the target UE, acquire the data volume of the uplink data to be transmitted reported by the target UE;

The number of RBs allocated to the target UE in each scheduling period is adjusted according to the data amount of the uplink data to be sent and the channel quality of the target UE.

Optionally, after the uplink skip function enabled by the target UE is for a semi-statically scheduled uplink grant, after detecting whether the channel quality of the target UE is better than the target quality threshold, the method further includes:

When the communication service between the target UE and the base station is not a low-latency communication service, determine whether the number of consecutive occurrences of the target event is greater than the threshold of the target number of times, the target event is not allocated to the base station at the base station An uplink transmission signal is detected on the uplink resource of the target UE, and an event that the channel quality of the target UE is better than the target quality threshold is detected;

When the number of consecutive occurrences of the target event is greater than the threshold of the target number of times, the semi-statically scheduled uplink authorization is deactivated.

Optionally, the deactivating the uplink authorization of the semi-static scheduling includes:

The target downlink control information DCI is sent to the target UE through a physical downlink control channel PDCCH, and the target DCI is used to instruct the target UE to deactivate the semi-static scheduled uplink grant.

In a second aspect, a scheduling apparatus for a hybrid automatic repeat request process is provided. The apparatus includes at least one module, and the at least one module is configured to implement the hybrid provided in the first aspect or any optional manner of the first aspect. Scheduling method of automatic retransmission request process.

In a third aspect, a communication device is provided. The communication device includes: a processor and a memory, and instructions are stored in the memory;

The processor is configured to execute instructions stored in the memory, and the processor implements the instructions to implement the hybrid automatic repeat request process provided in the first aspect or any optional manner of the first aspect Scheduling method.

According to a fourth aspect, a computer-readable storage medium is provided, in which instructions are stored in the computer-readable storage medium, and when the instructions run on a processor, the processor is caused to perform the first aspect or the first aspect described above The scheduling method of the hybrid automatic repeat request process provided in any optional manner of the aspect.

According to a fifth aspect, there is provided a computer program product which stores instructions which, when run on a computer, enable the computer to perform the above-mentioned first aspect or any of the alternative ways provided in the first aspect The scheduling method of the hybrid automatic retransmission request process.

According to a sixth aspect, there is provided a chip, which includes a programmable logic circuit and/or program instructions, and when the chip is running, it can execute the hybrid provided in the first aspect or any optional manner of the first aspect. Scheduling method of automatic retransmission request process.

The beneficial effects brought by the technical solutions provided in the embodiments of the present application include at least:

When the base station does not detect the uplink transmission signal on the target uplink resource, and the target uplink resource is the uplink resource allocated by the base station to the target UE with the uplink skip function enabled, it is detected whether the channel quality of the target UE is better than Target quality threshold. When the channel quality of the target UE is better than the target quality threshold, the base station can determine that the target UE does not send uplink data on the target uplink resource based on the uplink skip function. At this time, the base station can send the process to the target UE. End information, so that the target UE directly ends the target HARQ process corresponding to the target uplink resource. In this way, the base station can avoid invalidly sending retransmission indication information to the target UE, thereby saving communication resources.

BRIEF DESCRIPTION

FIG. 1 is a schematic diagram of an implementation environment provided by an embodiment of the present application;

2 is a flowchart of a HARQ process scheduling method provided by an embodiment of the present application;

3 is a block diagram of a device for scheduling a HARQ process provided by an embodiment of the present application;

4 is a block diagram of another HARQ process scheduling apparatus provided by an embodiment of the present application;

5 is a block diagram of a communication device provided by an embodiment of the present application;

6 is a block diagram of a communication system provided by an embodiment of the present application.

detailed description

To make the objectives, technical solutions, and advantages of the present application clearer, the following describes the embodiments of the present application in further detail with reference to the accompanying drawings.

In a wireless communication system, when there is uplink data to be sent, user equipment (English: User Equipment; referred to as: UE) can obtain the uplink resource allocated by the base station for it, and send uplink data to the base station on the uplink resource. Generally, the allocation of uplink resources by the base station to the UE may also be called uplink authorization, where the uplink authorization may generally include uplink authorization for dynamic scheduling and semi-persistent scheduling (English: Semi-persistent Scheduling; SPS for short).

1. Uplink authorization for dynamic scheduling.

In dynamically scheduled uplink authorization, when uplink data needs to be sent, the UE can request uplink resources from the base station. After receiving the UE request, the base station may send the first downlink control information (English: Downlink Control Information; DCI) to the UE through a physical downlink control channel (English: Physical Downlink Control Channel; PDCCH for short). The first DCI is used to indicate the number of resource blocks (English: Resource Block; RB for short) allocated by the base station to the UE and the positions of the RBs allocated by the base station to the UE in the time domain and the frequency domain. After receiving the first DCI, the UE may send uplink data on the RB allocated by the base station according to the indication of the first DCI.

2. Uplink authorization for semi-static scheduling.

Some communication services in the wireless communication system may require periodic data transmission. For these communication services, the base station may perform uplink authorization for semi-static scheduling.

In practical applications, the base station may activate the semi-static scheduled uplink authorization for the UE by sending the second DCI to the UE. The second DCI may be referred to as uplink SPS activation information, and the second DCI may indicate that each scheduling period In the figure, the number of RBs allocated by the base station to the UE and the positions of the RBs allocated by the base station to the UE in the time domain and the frequency domain. After receiving the second DCI, the UE may determine the RB allocated by the base station for each scheduling period according to the indication of the second DCI, and send uplink data to the base station on the RB.

In practical applications, the following situations may occur in both dynamically scheduled uplink authorization and semi-statically scheduled uplink authorization: a hybrid automatic repeat request in the UE corresponding to an uplink resource allocated by the base station (English: Hybrid Automatic Request); abbreviated as : HARQ) The sending buffer of the process is empty. When this happens, the UE has no uplink data to send on the uplink resource.

Before the 3GPP R14 communication protocol, when there is no uplink data to be sent on the uplink resource allocated by the base station, the UE needs to send an empty packet (also called a padding packet) on the uplink resource.

In the 3GPP R14 communication protocol, the wireless communication system introduces the uplink skip function (English: Uplink skipping). When there is no uplink data to be sent on the uplink resource allocated by the base station, the UE that has enabled the uplink skip function may not send any uplink data on the uplink resource, that is, the uplink hop is enabled The over-functional UE may not send empty packets on the uplink resource, which can reduce the power consumption of the UE and also reduce the uplink interference to neighbor cells.

In the 3GPP R14 communication protocol, for the uplink authorization for dynamic scheduling, the base station can send radio resource control (English: Radio Resource Control; RRC for short) signaling that carries skipUpLinkTxDynamic-r14 cells to the UE to pass the RRC message. Enable the UE to be configured to enable the uplink skip function; for the uplink grant for semi-static scheduling, the base station can send RRC signaling carrying skipUplinkTxSps-r14 cells to the UE to configure the UE to enable uplink skip via the RRC signaling Over function.

Generally, when a UE enabled with an uplink skip function does not send uplink data on an uplink resource allocated by the base station, the base station cannot detect an uplink transmission signal on the uplink resource.

However, in practical applications, there are many reasons why the base station cannot detect the uplink transmission signal on an uplink resource. For example, one possible reason is that the UE sent uplink data on the uplink resource, but due to interference received by the base station Severe, the uplink transmission signal cannot be demodulated, resulting in the base station not detecting the uplink transmission signal on the uplink resource; another possible reason is: the UE sent uplink data on the uplink resource, but due to the UE and the base station The distance between them is too long, which causes the strength of the uplink transmission signal received by the base station to be lower than the demodulation threshold, which in turn causes the base station to fail to detect the uplink transmission signal on this uplink resource; another possible reason is: The first DCI or the second DCI has missed detection, which results in the UE failing to send uplink data on the uplink resources allocated by the base station, which in turn causes the base station to fail to detect the uplink transmission signal; as mentioned above, there is another The possible reason is that the UE enabled with the uplink skip function does not send uplink data on the uplink resource, thereby causing the base station to fail to detect the uplink transmission signal on the uplink resource.

There are many reasons why the base station cannot detect the uplink transmission signal on an uplink resource, and for most reasons, the base station needs to instruct the UE to retransmit uplink data. Therefore, in the related art, when the uplink resource When no uplink transmission signal is detected, the base station sends retransmission instruction information to the UE to instruct the UE to retransmit the uplink data in the transmission buffer of the HARQ process corresponding to the uplink resource. After sending the retransmission instruction information to the UE, If the base station has not detected the uplink transmission signal, the base station will continue to send the retransmission indication information to the UE until the total number of uplink transmissions of the HARQ process corresponding to the uplink resource reaches the maximum number of uplink transmissions, or until the base station detects When the signal is sent upstream.

However, if the base station cannot detect the uplink transmission signal on an uplink resource because the UE with the uplink skip function enabled does not send uplink data on the uplink resource, then the transmission buffer of the HARQ process corresponding to the uplink resource Is empty, therefore, even if the base station delivers the retransmission instruction information, the UE cannot send uplink data to the base station. Therefore, after the base station delivers the retransmission instruction information, the base station will not detect the uplink transmission signal, so that the base station will Before the total number of uplink transmissions mentioned above reaches the maximum number of uplink transmissions, the retransmission indication information is sent to the UE multiple times ineffectively, which will cause a waste of communication resources.

Embodiments of the present application provide a method, device, and storage medium for scheduling HARQ processes, which can play a role in avoiding waste of communication resources.

In the method for scheduling a HARQ process provided by an embodiment of the present application, when a base station does not detect an uplink transmission signal on a target uplink resource, and the target uplink resource is an uplink allocated by the base station to a target UE enabled with an uplink skip function When the resource is available, the base station can detect whether the channel quality of the target UE is better than the target quality threshold. When the channel quality of the target UE is better than the target quality threshold, the base station can determine that the target UE is not on the target uplink resource based on the uplink skip function Uplink data, the base station can send the process end information to the target UE, so that the target UE directly ends the target HARQ process corresponding to the target uplink resource, so as to avoid the base station from sending invalid retransmission instructions to the target UE Information, thereby saving communication resources.

FIG. 1 is a schematic diagram of an implementation environment involved in a HARQ process scheduling method provided by an embodiment of this application. As shown in FIG. 1, the implementation environment may include a base station 10 and a UE 20, the base station 10 and the UE 20 may be connected through a wireless communication network, and the UE 20 may be any UE served by the base station 10.

Among them, the above wireless communication network may be a fifth generation mobile communication technology (English: The Fifth Generation Mobile Technology (abbreviation: 5G) communication network, or a long-term evolution (English: Long Term Evolution Evolution abbreviation: LTE) communication network, or , Other wireless communication networks similar to LTE communication networks or 5G communication networks.

In the embodiment of the present application, the UE 20 is a UE enabled with an uplink skip function, wherein the uplink skip function enabled by the UE 20 may be directed to dynamically scheduled uplink authorization or semi-statically scheduled uplink authorization.

FIG. 2 is a flowchart of a HARQ process scheduling method provided by an embodiment of the present application. The HARQ process scheduling method can be applied to the implementation environment shown in FIG. 1. As shown in FIG. 2, the HARQ process scheduling method The scheduling method may include the following steps:

Step 201: When no uplink transmission signal is detected on the target uplink resource, the base station detects whether the channel quality of the target UE is better than the target quality threshold.

The target UE is a UE with an uplink skip function enabled, and the target uplink resource is an uplink resource allocated by the base station to the target UE.

Since the target uplink resource is the uplink resource allocated by the base station to the target UE with the uplink skip function enabled, the reason why the base station fails to detect the uplink transmission signal on the target uplink resource may be that the target UE is based on the uplink skip function No uplink data is sent on the target uplink resource.

For convenience of explanation, the reason why the target UE does not send uplink data on the target uplink resource based on the uplink skip function is referred to as the uplink skip reason. Other reasons that cause the base station to fail to detect the uplink transmission signal on the target uplink resource are called traditional reasons.

In order to determine whether the reason why the base station does not detect the uplink transmission signal on the target uplink resource is the cause of uplink skipping, the base station can obtain the channel quality of the target UE and detect whether the channel quality is better than the target quality threshold, where the target quality The threshold can be specified by the wireless communication system.

Optionally, for a wireless communication system such as time division duplex (English: Time Division Duplex; TDD for short), which has reciprocity of uplink and downlink channels, since its uplink and downlink transmissions are in the same frequency band, the uplink can be used The channel quality is used to measure the downlink channel quality, or the downlink channel quality can be used to measure the uplink channel quality. In this case, the base station may only acquire the uplink channel quality or downlink channel quality of the target UE, and detect whether the acquired channel quality is better than the target quality threshold.

For a wireless communication system such as Frequency Division Duplex (Frequency Division Duplex; FDD for short) that does not have the reciprocity of the upstream and downstream channels, the upstream channel quality and the downstream channel quality are relatively independent. In other words, the upstream channel quality In a better case, the downlink channel quality may be poor, or, in a case where the uplink channel quality is poor, the downlink channel quality may be better. In this case, the base station can obtain the uplink channel quality and the downlink channel quality of the target UE, and detect whether the uplink channel quality and the downlink channel quality are better than the target quality threshold, respectively.

Under normal circumstances, the base station can obtain the uplink channel quality of the target UE by measuring the uplink reference signal of the target UE, and the base station can obtain the target UE's channel quality information according to the channel quality information (English: Channel Quality Information; CQI) reported by the target UE. Downlink channel quality, where the above-mentioned "CQI reported by the target UE" may be a CQI periodically uploaded by the target UE, or may be a CQI reported acyclically by the target UE under the instruction of the base station.

Normally, when the channel quality of the target UE is better, that is, when the channel quality of the target UE is better than the target quality threshold, the interference received by the base station is more serious and the uplink transmission signal cannot be demodulated. The first DCI or the second DCI missed detection or the distance between the target UE and the base station is relatively low, in other words, the reason why the base station does not detect the uplink transmission signal on the target uplink resource It is less likely for traditional reasons. In this case, the base station may determine that the cause that the base station did not detect the uplink transmission signal on the target uplink resource is the cause of uplink skipping.

When the channel quality of the target UE is poor, that is, when the channel quality of the target UE is worse than the target quality threshold, the interference received by the base station is more serious and the uplink transmission signal cannot be demodulated. One DCI or the second DCI missed detection or the distance between the target UE and the base station is relatively high. In other words, the reason why the base station fails to detect the uplink transmission signal on the target uplink resource is the traditional reason. It is more likely. In this case, the base station may determine that the cause that the base station did not detect the uplink transmission signal on the target uplink resource is a traditional cause.

It should be noted that, for a wireless communication system with reciprocity of uplink and downlink channels, "the channel quality of the target UE is better than the target quality threshold" means that the uplink channel quality of the target UE is better than the target quality threshold, or, " "The channel quality of the target UE is better than the target quality threshold" means that the downlink channel quality of the target UE is better than the target quality threshold.

For a wireless communication system that does not have the reciprocity of the uplink and downlink channels, "the channel quality of the target UE is better than the target quality threshold" means that the uplink channel quality of the target UE is better than the target quality threshold, and the downlink channel of the target UE The quality is better than the target quality threshold.

When the channel quality of the target UE is better than the target quality threshold, that is, when the base station determines that the cause that the base station did not detect the uplink transmission signal on the target uplink resource is the cause of uplink skipping, the base station may perform the technical process of step 202 .

When the channel quality of the target UE is worse than the target quality threshold, that is, when the base station determines that the cause that the base station did not detect the uplink transmission signal on the target uplink resource is a traditional cause, the base station may perform the technical process of step 203.

Step 202: The base station sends process end information to the target UE.

When the reason why the base station does not detect the uplink transmission signal on the target uplink resource is the cause of the uplink skip, the base station can send the process end information to the target UE. After receiving the process end information, the target UE can end according to the process The indication of the information ends the target HARQ process corresponding to the target uplink resource.

In this way, on the one hand, since the target HARQ process ends, the base station will no longer send retransmission indication information to the target UE to instruct the target UE to send target uplink data, where the target uplink data is in the transmission buffer of the target HARQ process Therefore, in step 202, the manner in which the target UE ends the target HARQ process according to the indication of the process end information can prevent the base station from invalidally sending the retransmission indication information to the target UE, thereby saving communication resources.

On the other hand, since the number of HARQ processes that the target UE can perform simultaneously is limited, and the target UE needs to send uplink data based on the HARQ process, if the target HARQ process is occupied for a long time, it may cause When the buffer changes from empty to non-empty, the target UE cannot use the target HARQ process to send new uplink data in time, so the transmission delay of the target UE's uplink data may be longer. Compared with the way in which the target UE ends the target HARQ process when the total number of uplink transmissions corresponding to the target HARQ process reaches the maximum number of uplink transmissions, the way in which the target UE ends the target HARQ process according to the indication of the process end information in step 202 can reduce the target The length of time the HARQ process is occupied. Therefore, the transmission delay of the uplink data of the target UE can be reduced.

Optionally, in step 202, the base station may send a confirmation message (English: ACK) to the target UE through a physical hybrid automatic retransmission indication channel (English: Physical Hybrid Automatic Request Request Indicator; referred to as PHICH), where the confirmation The information is the so-called process end information above, which is used to instruct the target UE to end the target HARQ process.

In the embodiment of the present application, the uplink skip function enabled by the target UE may be directed to a dynamically scheduled uplink grant, or may be directed to a semi-static scheduled uplink grant.

If the uplink skip function enabled by the target UE is for dynamically scheduled uplink authorization, the base station may end the process after sending the process end information to the target UE. If the uplink skip function enabled by the target UE is directed to the semi-statically scheduled uplink grant, the base station may perform the technical processes of steps 204 to 206.

Step 203: When the total number of uplink transmissions corresponding to the target HARQ process is less than the maximum number of uplink transmissions, the base station sends retransmission indication information to the target UE.

The retransmission instruction information is used to instruct the target UE to send target uplink data to the base station, where the target uplink data is data in the transmission buffer of the target HARQ process.

When the reason why the base station does not detect the uplink transmission signal on the target uplink resource is the traditional reason, the base station needs to instruct the target UE to retransmit the target uplink data. Therefore, when the total number of uplink transmissions corresponding to the target HARQ process is less than the maximum uplink transmission At times, the base station may send the retransmission indication information to the target UE.

In a possible implementation manner, the base station may instruct the target UE to retransmit the target uplink data through adaptive retransmission, that is, the base station may send the third DCI to the target UE through the PDCCH, and the third DCI is the upper limit. In the retransmission indication information described in the article, the third DCI may include a new data indication (English: New Data Indicator; NDI for short) field and an RB resource allocation field. The NDI field occupies 1 bit and is used to indicate the current authorization Corresponding to initial transmission or retransmission, the RB resource allocation field is used to indicate the number of RBs allocated by the base station to the target UE for sending the target uplink data and the positions of the RBs in the time domain and the frequency domain.

In another possible implementation manner, the base station may instruct the target UE to retransmit the target uplink data through non-adaptive retransmission, that is, the base station may send negative confirmation information (English: NACK) to the target UE through the PHICH If the target UE detects a NACK corresponding to the target HARQ process on the PHICH and no DCI corresponding to the target HARQ is detected on the PDCCH, the target UE may perform non-adaptive retransmission. When performing non-adaptive retransmission, the target UE can use the frequency domain resource and the uplink modulation method used for the last uplink data transmission to retarget the target uplink data on the corresponding time domain resource according to the uplink HARQ timing specified in the communication protocol. pass.

Step 204: The base station determines whether the number of consecutive occurrences of the target event is greater than the threshold of the target number of times.

Among them, the target event is an event where the base station does not detect the uplink transmission signal on the uplink resource allocated to the target UE, and the base station detects that the channel quality of the target UE is better than the target quality threshold, where the base station does not detect the uplink in the target event The uplink resource for transmitting the signal is an uplink semi-static resource, that is, the uplink resource is an uplink resource allocated by the base station to the target UE through a semi-static uplink grant.

In other words, the target event refers to an event where the base station determines that the reason why it has not detected the uplink transmission signal on the uplink resource allocated to the target UE through the semi-static uplink authorization is the cause of the uplink skip. The threshold of the target number of times may be specified by the wireless communication system.

In a specific implementation, the wireless communication system can also deactivate semi-statically scheduled uplink authorization (English: deactivation). The so-called "deactivation" refers to the operation of terminating the activation state.

There may be two ways to deactivate the semi-statically scheduled uplink authorization, one is explicit deactivation and the other is implicit deactivation.

In explicit deactivation, the base station may send semi-static scheduled deactivation DCI (hereinafter referred to as target DCI) to the UE with activated semi-static scheduled uplink authorization, the target DCI is used to instruct the UE to deactivate semi-static scheduled uplink Authorization, that is, the target DCI is used to instruct the UE to stop performing the technical process of determining the RB allocated by the base station for each scheduling period and sending uplink data to the base station on the RB.

In implicit deactivation, the base station can send the information about the number of empty packet transmissions to the UE that has activated the semi-statically scheduled uplink authorization through RRC signaling. When the number of times that the UE sends empty packets to the base station reaches the indication of the number of empty packet transmissions Times, the UE can deactivate the semi-statically scheduled uplink authorization. When the base station receives the number of empty packets sent by the UE reaches the number of times indicated by the number of times the empty packet is sent, the base station can stop semi-static UE Scheduled uplink authorization.

Explicit deactivation has the risk that the UE fails to parse the target DCI, and if the UE fails to parse the target DCI, it will cause the base station and the UE to have inconsistent understanding of the allocation of uplink resources, which will adversely affect the data transmission of the wireless communication system.

Considering the risk that the UE fails to resolve the target DCI, the wireless communication system introduces the above implicit deactivation method. Implicit deactivation is a necessary supplement to explicit deactivation.

However, according to the above description, it can be seen that because implicit deactivation depends on the number of times the UE sends an empty packet, and the UE with the upstream skip function enabled does not send an empty packet to the base station, therefore, the communication protocol specifies that the upstream skip is enabled The functional UE does not support implicit deactivation. In other words, in the embodiment of the present application, the target UE cannot perform implicit deactivation.

In the embodiment of the present application, considering that the target UE cannot perform implicit deactivation, for the target UE with the uplink skip function enabled, the base station can use the number of consecutive occurrences of the target event instead of the number of times the target UE sends an empty packet. Decide whether it is necessary to deactivate the uplink grant for semi-static scheduling. In order to achieve the above purpose, the base station may perform a technical process of determining whether the number of consecutive occurrences of the target event is greater than the threshold of the target number of times.

Step 205: In the case where the communication service between the target UE and the base station is a low-latency communication service, when the number of consecutive occurrences of the target event is greater than the target number threshold, the base station reduces the number of RBs allocated to the target UE every scheduling period number.

The low-latency communication service is sensitive to the uplink data transmission delay. To ensure the low-latency communication service's requirements for the uplink data transmission delay, when the number of consecutive occurrences of the target event is greater than the target number threshold, the base station does not The uplink grant performs deactivation, but reduces the number of RBs allocated to the target UE every scheduling period.

In this way, after the number of consecutive occurrences of the target event is greater than the target number threshold, if the target UE needs to send uplink data to the base station again, the target UE does not need to send a scheduling request (English: Scheduling Request; SR for short) to the base station to apply for uplink Resources, the base station does not need to perform the allocation of uplink resources (usually 1 RB) to the target UE after receiving the SR, so that the target UE can use the allocated uplink resources to report the buffer status report (English: BufferStatusReport; referred to as: BSR) technical process, at the same time, the base station does not need to perform the technical process of determining whether it is necessary to activate the semi-static scheduled uplink authorization for the target UE according to the service characteristics of the target UE. In the embodiment of the present application, the target UE can directly use the reduced number of RBs (that is, reserved RBs) in each scheduling cycle to transmit uplink data, therefore, it can ensure low-latency communication services to a certain extent Requirements for upstream data transmission delay.

At the same time, when the number of consecutive occurrences of the target event is greater than the threshold of the target number of times, the base station reduces the number of RBs allocated to the target UE in each scheduling cycle, so that the waste of communication resources can be reduced to a certain extent.

After reducing the number of RBs allocated to the target UE in each scheduling period, when the base station detects an uplink transmission signal on the uplink resource allocated to the target UE, that is, when the base station determines that the target UE needs to send uplink data again The base station may adjust the number of RBs allocated to the target UE in each scheduling period according to the data volume of the uplink data to be sent reported by the target UE and the channel quality of the target UE.

Among them, the so-called "adjusting the number of RBs allocated to the target UE in each scheduling period" may include: increasing the number of RBs allocated to the target UE in each scheduling period, without changing the number of RBs allocated to the target UE in each scheduling period The number may reduce the number of RBs allocated to the target UE every scheduling period.

In this way, the base station can determine the number of RBs allocated to the target UE in each scheduling cycle according to the data volume of the uplink data to be sent in the target UE and the channel quality of the target UE. On the one hand, it can meet the target UE’s uplink transmission Demand, on the other hand, can maximize communication resource savings.

Step 206: When the communication service between the target UE and the base station is not a low-latency communication service, when the number of consecutive occurrences of the target event is greater than the threshold of the target number of times, the base station explicitly deactivates the semi-statically scheduled uplink authorization.

In the case where the communication service between the target UE and the base station is not a low-latency communication service, if the number of consecutive occurrences of the target event is greater than the threshold of the target number of times, it means that the target UE has no uplink data to send within a period of time. In order to save communication resources, the base station can explicitly deactivate the semi-statically scheduled uplink grant.

The base station may send the target DCI described above to the target UE through the PDCCH, where the target DCI is used to instruct the target UE to deactivate the semi-statically scheduled uplink grant.

In summary, the HARQ process scheduling method provided by the embodiment of the present application is that when the base station does not detect the uplink transmission signal on the target uplink resource, and the target uplink resource is allocated by the base station to the uplink skip function enabled When the uplink resource of the target UE is detected, it is detected whether the channel quality of the target UE is better than the target quality threshold. When the channel quality of the target UE is better than the target quality threshold, the base station can determine that the target UE is not on the target based on the uplink skip function The uplink data is sent on the uplink resource. At this time, the base station can send the process end information to the target UE, so that the target UE directly ends the target HARQ process corresponding to the target uplink resource. In this way, the base station can be prevented from sending the retransmission ineffective to the target UE. Send instructions to save communication resources.

Please refer to FIG. 3, which shows a block diagram of a HARQ process scheduling apparatus 300 provided by an embodiment of the present application. The HARQ process scheduling apparatus 300 may be a base station in the implementation environment shown in FIG. 1. Referring to FIG. 3, the HARQ process scheduling apparatus 300 may include a detection module 301 and a sending module 302.

The detection module 301 is used to detect whether the channel quality of the target UE is better than the target quality threshold when no uplink transmission signal is detected on the target uplink resource, and the target uplink resource is the uplink resource allocated by the base station to the target UE , The target UE is a UE with the uplink skip function enabled.

The sending module 302 is configured to send process end information to the target UE when the channel quality of the target UE is better than the target quality threshold, where the process end information is used to indicate that the target UE ends corresponding to the target uplink resource The target hybrid automatic retransmission request HARQ process.

In an embodiment of the present application, the sending module 302 is further configured to send a message to the target UE when the channel quality of the target UE is worse than the target quality threshold, and the total number of uplink transmissions corresponding to the target HARQ process is less than the maximum number of uplink transmissions. The target UE sends retransmission instruction information, where the retransmission instruction information is used to instruct the target UE to send target uplink data to the base station, where the target uplink data is data in a transmission buffer of the target HARQ process.

As shown in FIG. 4, an embodiment of the present application also provides another HARQ process scheduling apparatus 400. In addition to the modules of the HARQ process scheduling apparatus 300, the HARQ process scheduling apparatus 400 also includes a reduction in the number of resource blocks Module 303, resource block number adjustment module 304 and deactivation module 305.

Wherein, when the uplink skip function enabled by the target UE is for the uplink grant of semi-static scheduling, the scheduling apparatus 400 of the HARQ process may include a module 303 for reducing the number of resource blocks. The resource block number reduction module 303 is used to determine whether the number of consecutive occurrences of the target event is greater than the threshold of the target number of times when the communication service between the target UE and the base station is a low-latency communication service. An event where an uplink transmission signal is detected on the uplink resource allocated by the base station to the target UE and a channel quality of the target UE is better than the target quality threshold is detected; when the number of consecutive occurrences of the target event is greater than the target number threshold To reduce the number of resource blocks RB allocated to the target UE in each scheduling period.

The resource block number adjustment module 304 is configured to, after reducing the number of resource block RBs allocated to the target UE every scheduling period, when an uplink transmission signal is detected on the uplink resource allocated by the base station to the target UE , Obtaining the data volume of the uplink data to be sent reported by the target UE, and adjusting the number of RBs allocated to the target UE in each scheduling period according to the data volume of the uplink data to be sent and the channel quality of the target UE.

When the uplink skip function enabled by the target UE is for uplink authorization of semi-static scheduling, the scheduling apparatus 400 of the HARQ process may include a deactivation module 305. The deactivation module 305 is used to determine whether the number of consecutive occurrences of the target event is greater than the threshold of the target number of times when the communication service between the target UE and the base station is not a low-latency communication service, and the target event is not at the base station When an uplink transmission signal is detected on the uplink resource allocated to the target UE, and an event that the channel quality of the target UE is better than the target quality threshold is detected; when the number of consecutive occurrences of the target event is greater than the target number threshold, go to Activate the semi-statically scheduled uplink authorization.

In an embodiment of the present application, the deactivation module 305 is specifically configured to send target downlink control information DCI to the target UE through a physical downlink control channel PDCCH, and the target DCI is used to instruct the target UE to deactivate the semi-statically scheduled Uplink authorization.

In summary, the HARQ process scheduling apparatus provided in the embodiments of the present application passes the uplink transmission signal when no uplink transmission signal is detected on the target uplink resource, and the target uplink resource is allocated by the base station to the target enabled with the uplink skip function When the uplink resource of the UE is detected, it is detected whether the channel quality of the target UE is better than the target quality threshold. When the channel quality of the target UE is better than the target quality threshold, it can be determined that the target UE is not on the target uplink resource based on the uplink skip function Uplink data is sent, and at this time, the process end information can be sent to the target UE, so that the target UE directly ends the target HARQ process corresponding to the target uplink resource, so that the base station can be prevented from sending invalid retransmission indication information to the target UE. To save communication resources.

Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment related to the method, and will not be elaborated here.

Fig. 5 is a block diagram of a communication device 500 according to an exemplary embodiment. The communication device may be a base station, or a circuit structure, chip, chip system, etc. in the base station. As shown in FIG. 5, the communication device 500 may include a processor 501, a receiver 502, a transmitter 503, and a memory 504. The receiver 502, the transmitter 503, and the memory 504 are respectively connected to the processor 501 through a bus. It should be noted that in some possible implementation manners, the processor 501 and the memory 504 may be integrated together.

The processor 501 includes one or more processing cores. The processor 501 runs a software program and a module to execute the method executed by the base station in the HARQ process scheduling method provided in the embodiment of the present application. The memory 504 may be used to store software programs and modules. Specifically, the memory 504 may store an operating system 5041 and at least one function application module 5042 required by the function. The receiver 502 is used to receive communication data sent by other devices, and the transmitter 503 is used to send communication data to other devices.

Fig. 6 is a block diagram of a communication system 600 according to an exemplary embodiment. As shown in Fig. 6, the communication system 600 includes a base station 601 and a UE 602.

Among them, the base station 601 is used to perform the scheduling method of the HARQ process performed by the base station in the foregoing embodiments.

The UE 602 is used to perform the scheduling method of the HARQ process performed by the UE in the foregoing embodiments.

In an exemplary embodiment, a computer-readable storage medium is also provided. The computer-readable storage medium is a non-volatile computer-readable storage medium. The computer-readable storage medium stores a computer program and the stored When the computer program is executed by the processing component, the scheduling method of the HARQ process provided by the foregoing embodiment of the present application can be implemented.

An embodiment of the present application also provides a computer program product which stores instructions which, when run on a computer, enable the computer to execute the HARQ process scheduling method provided by the embodiment of the present application.

An embodiment of the present application further provides a chip, which includes a programmable logic circuit and/or a program instruction, and when the chip is running, the scheduling method of the HARQ process provided by the embodiment of the present application can be executed.

It should be understood that in various embodiments of the present application, the size of the sequence numbers of the above processes does not mean the order of execution order, and the execution order of each process should be determined by its function and internal logic, and should not be applied to the embodiments of the present application The implementation process constitutes no limitation.

It should be understood that the terms “first” and “second” in this document are only used to distinguish the description, and cannot be understood as indicating or implying relative importance, or as indicating or implying the order. The names of technical features with the same serial number may correspond to different technical features.

In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server or data center Transmit to another website, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device including a server, a data center, and the like integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, Solid State Disk (SSD)), or the like.

A person of ordinary skill in the art may understand that all or part of the steps for implementing the above-mentioned embodiments may be completed by hardware, or may be completed by a program instructing related hardware. The program may be stored in a computer-readable storage medium. The mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk.

The above are only exemplary embodiments of this application and are not intended to limit this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of this application should be included in the protection of this application Within range.

Claims (14)

A scheduling method for a hybrid automatic repeat request process, characterized in that the method includes: When no uplink transmission signal is detected on the target uplink resource, it is detected whether the channel quality of the target user equipment UE is better than the target quality threshold, the target uplink resource is the uplink resource allocated by the base station to the target UE, and the target UE is UE capable of uplink skip function; When the channel quality of the target UE is better than the target quality threshold, send process end information to the target UE; The process end information is used to instruct the target UE to end the target hybrid automatic repeat request HARQ process corresponding to the target uplink resource. The method according to claim 1, wherein the method further comprises: When the channel quality of the target UE is worse than the target quality threshold, and the total number of uplink transmissions corresponding to the target HARQ process is less than the maximum number of uplink transmissions, sending retransmission indication information to the target UE; Wherein, the retransmission indication information is used to instruct the target UE to send target uplink data to the base station, where the target uplink data is data in a transmission buffer of the target HARQ process. The method according to claim 1, wherein when the uplink skip function enabled by the target UE is for a semi-static scheduled uplink grant, the detection whether the channel quality of the target user equipment UE is better than a target quality threshold After that, the method further includes: When the communication service between the target UE and the base station is a low-latency communication service, determine whether the number of consecutive occurrences of the target event is greater than the target number threshold, and the target event is not allocated to the target by the base station An uplink transmission signal is detected on the uplink resource of the UE, and an event that the channel quality of the target UE is better than the target quality threshold is detected; When the number of consecutive occurrences of the target event is greater than the target number of times threshold, the number of resource blocks RB allocated to the target UE in each scheduling period is reduced. The method according to claim 3, wherein after reducing the number of resource blocks RB allocated to the target UE every scheduling period, the method further comprises: When an uplink transmission signal is detected on the uplink resource allocated by the base station to the target UE, acquire the data volume of the uplink data to be transmitted reported by the target UE; The number of RBs allocated to the target UE in each scheduling period is adjusted according to the data amount of the uplink data to be sent and the channel quality of the target UE. The method according to claim 1, wherein when the uplink skip function enabled by the target UE is for a semi-static scheduled uplink grant, the detection whether the channel quality of the target user equipment UE is better than a target quality threshold After that, the method further includes: When the communication service between the target UE and the base station is not a low-latency communication service, determine whether the number of consecutive occurrences of the target event is greater than the threshold of the target number of times, the target event is not allocated to the base station at the base station An uplink transmission signal is detected on the uplink resource of the target UE, and an event that the channel quality of the target UE is better than the target quality threshold is detected; When the number of consecutive occurrences of the target event is greater than the threshold of the target number of times, the semi-statically scheduled uplink authorization is deactivated. The method according to claim 5, wherein the deactivating the uplink grant of the semi-static scheduling includes: The target downlink control information DCI is sent to the target UE through a physical downlink control channel PDCCH, and the target DCI is used to instruct the target UE to deactivate the semi-static scheduled uplink grant. A scheduling device for a hybrid automatic repeat request process, characterized in that the device includes: The detection module is used to detect whether the channel quality of the target user equipment UE is better than the target quality threshold when the uplink transmission signal is not detected on the target uplink resource. The target uplink resource is the uplink resource allocated by the base station to the target UE. The target UE is a UE with the uplink skip function enabled; A sending module, configured to send process end information to the target UE when the channel quality of the target UE is better than the target quality threshold; The process end information is used to instruct the target UE to end the target hybrid automatic repeat request HARQ process corresponding to the target uplink resource. The device according to claim 7, wherein the sending module is further configured to: When the channel quality of the target UE is worse than the target quality threshold, and the total number of uplink transmissions corresponding to the target HARQ process is less than the maximum number of uplink transmissions, sending retransmission indication information to the target UE; Wherein, the retransmission indication information is used to instruct the target UE to send target uplink data to the base station, where the target uplink data is data in a transmission buffer of the target HARQ process. The apparatus according to claim 7, wherein when the uplink skip function enabled by the target UE is for a semi-static scheduled uplink grant, the apparatus further includes a resource block number reduction module; the resource block Number reduction module for: When the communication service between the target UE and the base station is a low-latency communication service, determine whether the number of consecutive occurrences of the target event is greater than the target number threshold, and the target event is not allocated to the target by the base station An uplink transmission signal is detected on the uplink resource of the UE, and an event that the channel quality of the target UE is better than the target quality threshold is detected; When the number of consecutive occurrences of the target event is greater than the target number of times threshold, the number of resource blocks RB allocated to the target UE in each scheduling period is reduced. The apparatus according to claim 9, wherein the apparatus further comprises a resource block number adjustment module; the resource block number adjustment module is configured to: When an uplink transmission signal is detected on the uplink resource allocated by the base station to the target UE, obtain the data volume of the uplink data to be transmitted reported by the target UE; The number of RBs allocated to the target UE in each scheduling period is adjusted according to the data amount of the uplink data to be sent and the channel quality of the target UE. The apparatus according to claim 7, wherein, when the target UE-enabled uplink skip function is for semi-statically scheduled uplink authorization, the apparatus further includes a deactivation module; the deactivation module is used to in: When the communication service between the target UE and the base station is not a low-latency communication service, determine whether the number of consecutive occurrences of the target event is greater than the threshold of the target number of times, the target event is not allocated to the base station at the base station An uplink transmission signal is detected on the uplink resource of the target UE, and an event that the channel quality of the target UE is better than the target quality threshold is detected; When the number of consecutive occurrences of the target event is greater than the threshold of the target number of times, the semi-statically scheduled uplink authorization is deactivated. The device according to claim 11, wherein the deactivation module is configured to: The target downlink control information DCI is sent to the target UE through a physical downlink control channel PDCCH, and the target DCI is used to instruct the target UE to deactivate the semi-static scheduled uplink grant. A communication device, characterized in that the communication device includes: a processor and a memory, and instructions are stored in the memory; The processor is configured to execute instructions stored in the memory, and the processor implements the instruction to implement the method for scheduling a hybrid automatic repeat request process according to any one of claims 1 to 6. A computer-readable storage medium, characterized in that instructions are stored in the computer-readable storage medium, and when the instructions are run on a processor, the processor is caused to execute any one of claims 1 to 6. The scheduling method of the hybrid automatic retransmission request process.

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