CN112468266B - Base station virtual HARQ (hybrid automatic repeat request) process scheduling method and device and base station - Google Patents

Base station virtual HARQ (hybrid automatic repeat request) process scheduling method and device and base station Download PDF

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CN112468266B
CN112468266B CN201910845870.1A CN201910845870A CN112468266B CN 112468266 B CN112468266 B CN 112468266B CN 201910845870 A CN201910845870 A CN 201910845870A CN 112468266 B CN112468266 B CN 112468266B
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harq process
virtual
base station
scheduling
real
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CN112468266A (en
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史承兴
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The invention discloses a base station virtual HARQ process scheduling method, a device and a base station, wherein the method comprises the following steps: applying for virtual HARQ process to schedule wireless resource; based on the radio resource scheduling, transmitting data to a terminal through a downlink control information DCI subframe by adopting a real HARQ process; after receiving the feedback confirmation information of the HARQ process sent by the terminal, the virtual HARQ process is replaced by the real HARQ process, so that the base station can send the DCI subframe by adopting the real HARQ process in the next period. The invention fully utilizes the air interface resource, thereby increasing the downstream peak flow based on the IoT protocol.

Description

Base station virtual HARQ (hybrid automatic repeat request) process scheduling method and device and base station
Technical Field
The present invention relates to the field of communications, and in particular, to a base station virtual HARQ process scheduling method and apparatus, and a base station.
Background
The third generation partnership project (3rd Generation Partnership Project,3GPP) defines an enhanced machine type communication (Enhanced Machine Type Communication, eMTC) protocol in Release13 to support large connected wide area network internet of things. eMTC is an important branch of the internet of everything technology, and is an emerging technology in the field of internet of things (Internet of Things, ioT), and is widely used for supporting the internet of things connection of low-power-consumption devices in a cellular network in a wide area.
The peak flow is a significant characteristic of measuring the terminal of the Internet of things, and higher peak flow can meet more application scenes of the Internet of things. Therefore, how to obtain higher downstream peak traffic based on IoT protocols (including eMTC, NB-IoT, etc.) is a challenge.
Disclosure of Invention
The embodiment of the invention provides a base station virtual HARQ process scheduling method and device and a base station, so as to obtain higher downlink peak flow based on an internet traffic (IoT) protocol.
The embodiment of the invention provides a base station virtual HARQ process scheduling method, which comprises the following steps:
applying for a virtual hybrid automatic repeat request (HARQ) process to perform wireless resource scheduling;
based on the radio resource scheduling, transmitting data to a terminal through a downlink control information DCI subframe by adopting a real HARQ process;
after receiving the feedback confirmation information of the HARQ process sent by the terminal, replacing the virtual HARQ process with a real HARQ process so that the base station can send the DCI subframe by adopting the real HARQ process in the next period.
The embodiment of the invention also provides a base station virtual HARQ process scheduling device, which comprises:
the wireless resource management unit is used for applying for the virtual hybrid automatic repeat request (HARQ) process to carry out wireless resource scheduling;
the baseband sending unit is used for sending data to the terminal through a downlink control information DCI subframe by adopting a real HARQ process based on the radio resource scheduling;
the base band receiving unit is used for receiving HARQ process feedback confirmation information sent by the terminal;
the radio resource management unit is further configured to replace the virtual HARQ process with a real HARQ process after the baseband receiving unit receives the feedback acknowledgement information of the HARQ process, so that the base station can send the DCI subframe by using the real HARQ process in the next period.
The embodiment of the invention also provides a base station virtual HARQ process scheduling device, which comprises: the base station virtual HARQ process scheduling method comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the computer program is executed by the processor to realize the steps of the base station virtual HARQ process scheduling method.
The embodiment of the invention also provides a computer readable storage medium, one or more implementation programs are stored on the computer readable storage medium, and the steps of the base station virtual HARQ process scheduling method are implemented when the programs are executed by a processor.
By adopting the embodiment of the invention, the length of the downlink HARQ Process stop and the like at the terminal side is smaller than that of the base station, and the resource scheduling is carried out through the virtual HARQ Process, so that the air interface resource is fully utilized, and the downlink peak flow based on the internet traffic (IoT) protocol is increased.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 is a schematic diagram of an embodiment of the present invention for HARQ Process outage and time length;
fig. 2 is a flowchart of a base station virtual HARQ process scheduling method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of virtual HARQ Process scheduling of the present invention;
fig. 4 is a schematic diagram of a base station virtual HARQ process scheduling apparatus according to a first embodiment of the present invention;
fig. 5 is a schematic diagram of a base station virtual HARQ process scheduling apparatus according to a second embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Before describing the technical solution of the embodiment of the present invention in detail, a hybrid automatic repeat request (Hybrid Automatic Repeat Request, HARQ) will be described first.
HARQ uses Stop-And-Wait Protocol (Stop-And-Wait Protocol) to transmit data. In the stop-wait protocol, after a transmitting end transmits a Transport Block (TB), the transmitting end stops waiting for acknowledgement information, and a receiving end uses 1 bit of information to acknowledge the TB with positive (ACK) or Negative (NACK).
Since the sending end stops waiting for acknowledgement after each transmission, the throughput is low, and therefore eMTC uses multiple parallel Stop-And-Wait processes (Stop-And-Wait processes), when one HARQ Process (HARQ Process) waits for acknowledgement information, the sending end can use another HARQ Process to continue sending data, and therefore the number of HARQ processes, the service period And the TB size together determine eMTC traffic.
The sending terminal base station starts to use the HARQ Process from the dispatching to the receiving terminal side and feeds back the confirmation result, namely stopping waiting time is 10 subframes. According to the 3GPP Release13 protocol, the number of eMTC downlink HARQ processes is 8 under the frequency division duplex (Frequency Division Duplex, FDD) scene, in the scene, 10 subframes can schedule 8 HARQ processes, namely 8 times of scheduling, the scheduling times are converted into 800 times in 1 second, and the maximum size (Transfer Block Size, TBSIZE) of the eMTC downlink maximum transmission block is 1000bits (bit number), so that the eMTC downlink peak flow is 800Kbps (Kilometre Bits Per Second kilobits per second).
Because the physical layer of the base station has a certain processing delay, if the base station receives the acknowledgement feedback of the terminal later than 1 subframe on the air interface, the base station HARQ Process stop waiting time is 11 subframes, namely the service period of the HARQ Process is 11 subframes, the number of times of scheduling is 727.27 when the service period is calculated to 1 second, and the obtained downlink peak flow is 727.27Kbps.
According to the protocol, the time length of the HARQ Process stop at the receiving end terminal side is calculated from the beginning of receiving downlink control information (Downlink Control Information, DCI) until the end of the feedback confirmation result of the terminal, and is 7 subframes, namely the service period of the HARQ Process is 7. In the FDD scene, when the number of HARQ processes is 8, full scheduling can be theoretically supported, namely, the number of times of 1 second scheduling can reach 1000 times, and by combining eMTC downlink maximum TBSIZE, the eMTC downlink peak flow is 1000Kbps, which is higher than the theoretical flow of a base station of a transmitting end and can fully utilize air interface resources.
Fig. 1 is a schematic diagram of a time length of HARQ Process outage in an embodiment of the present invention, where a base station downlink advances DCI air interface subframe 3 subframes scheduling, downlink DCI and a corresponding PDSCH are spaced by 1 subframe, and PDSCH and a subframe of terminal side acknowledgement feedback are spaced by 3 subframes, so that a time length of HARQ Process outage of the base station is calculated and obtained to be 10 subframes, and a time length of HARQ Process outage of the terminal side is calculated to be 7 subframes.
Therefore, the length of the downlink HARQ Process of the terminal side is smaller than that of the base station when the downlink HARQ Process of the terminal side is stopped, and the base station scheduling is optimized to obtain higher eMTC downlink peak flow.
Method embodiment
According to the embodiment of the invention, a base station virtual HARQ process scheduling method is provided, which is applicable to the Internet of things protocol defined after 3GPP Release13 and comprises eMTC, NB-IoT and the like. Fig. 2 is a flowchart of a base station virtual HARQ process scheduling method according to an embodiment of the present invention, as shown in fig. 2, where the base station virtual HARQ process scheduling method according to an embodiment of the present invention specifically includes:
step 201, applying for a virtual HARQ process to perform radio resource scheduling;
before performing step 201, the base station needs to define and maintain the virtual HARQ entity in advance, so as to apply for the virtual HARQ entity to schedule later, and store relevant scheduling information.
In step 201, after 8 HARQ processes in the protocol run out, a virtual HARQ process may be applied for radio resource scheduling, or a virtual HARQ process may be directly applied for radio resource scheduling.
Step 202, based on the radio resource scheduling, transmitting data to the terminal through a downlink control information DCI subframe by adopting a real HARQ process. Specifically:
based on radio resource scheduling, transmitting DCI subframes by adopting a real HARQ process, and based on downlink control information (Downlink Control Informatio, DCI) subframes, transmitting data to a terminal on a downlink physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) air interface;
in the embodiment of the invention, the adopted real HARQ process is the real HARQ process replaced in the previous period.
Step 203, after receiving the feedback acknowledgement information of the HARQ process sent by the terminal, the virtual HARQ process is replaced by the real HARQ process, so that the base station can send the DCI subframe by using the real HARQ process in the next period.
In step 203, the base station needs to determine whether the HARQ Process of the terminal is completed, that is, if the base station receives that the HARQ Process feedback acknowledgement information sent by the terminal is NACK, an appropriate real HARQ Process is selected to replace the virtual HARQ Process.
In addition, in the embodiment of the present invention, if the feedback acknowledgement information of the HARQ process sent by the terminal is not received within a predetermined time, the virtual HARQ process needs to be released.
As can be seen from the above processing procedure, in the embodiment of the present invention, the scheduling policy of the virtual HARQ Process specifically includes:
(1) Defining a virtual HARQ entity, which is maintained by a base station;
(2) The base station uses virtual HARQ scheduling when scheduling;
(3) And after receiving the terminal side HARQ Process confirmation result, the base station uses the real HARQ Process to replace the virtual HARQ Process.
Fig. 3 is a schematic diagram of virtual HARQ Process scheduling in the present invention, as shown in fig. 3, a virtual HARQ Process entity is used in base station scheduling, after receiving real HARQ Process feedback, a real HARQ Process is used to replace the virtual HARQ entity, and then DCI information is sent, which specifically includes the following steps:
in step 301, when a scheduling request is made on the terminal side, the base station uses the virtual HARQ to perform scheduling, and obtains information such as a resource block and a modulation-demodulation order.
Step 302, based on radio resource scheduling, the DCI subframe is issued by using the real HARQ process replaced by the previous period.
Step 303, based on the indication of the DCI subframe, transmitting data to the terminal on the PDSCH air interface;
step 304, after receiving the feedback of the terminal side HARQ Process acknowledgement, the base station replaces the virtual HARQ Process schedule with the real HARQ Process.
In summary, in the embodiment of the present invention, the base station uses the virtual HARQ Process during scheduling, and replaces the virtual HARQ Process when receiving the feedback result from the terminal side, so as to solve the problem that the HARQ Process is stopped and the time length is longer than that of the terminal side due to the advanced scheduling of the base station and the physical layer processing delay, so as to obtain the higher downlink peak flow of the eMTC terminal.
Device embodiment 1
According to an embodiment of the present invention, there is provided a base station virtual HARQ process scheduling apparatus, and fig. 4 is a schematic diagram of the base station virtual HARQ process scheduling apparatus according to the embodiment of the present invention, as shown in fig. 4, where the base station virtual HARQ process scheduling apparatus according to the embodiment of the present invention specifically includes:
a radio resource management unit 40, configured to apply for a virtual HARQ process to perform radio resource scheduling;
the radio resource management unit 40 needs to define and maintain the virtual HARQ entity in advance so that the virtual HARQ entity is subsequently applied for scheduling and store the relevant scheduling information.
The radio resource management unit 40 may apply for the predefined virtual HARQ process to perform radio resource scheduling after 8 HARQ processes in the protocol run out, or may directly apply for the predefined virtual HARQ process to perform radio resource scheduling.
The baseband sending unit 42 is configured to send data to the terminal through the downlink control information DCI subframe by using the actual HARQ process based on the radio resource scheduling. Specifically, based on the radio resource scheduling, a real HARQ process is adopted to issue a DCI subframe, and based on the DCI subframe, data is sent to a terminal on a downlink PDSCH air interface;
in the embodiment of the present invention, the actual HARQ process used by the baseband transmission unit 42 is the actual HARQ process replaced in the previous cycle.
A baseband receiving unit 44, configured to receive HARQ process feedback acknowledgement information sent by the terminal;
the radio resource management unit 40 is further configured to replace the virtual HARQ process with a real HARQ process after the baseband receiving unit receives the feedback acknowledgement information of the HARQ process, so that the base station can send the DCI subframe using the real HARQ process in the next period.
The radio resource management unit 40 needs to determine whether the HARQ Process of the terminal is completed, that is, if the baseband receiving unit 44 receives that the HARQ Process feedback acknowledgement information sent by the terminal is NACK, the radio resource management unit 40 selects an appropriate real HARQ Process to replace the virtual HARQ Process.
Furthermore, in the embodiment of the present invention, if the HARQ process feedback acknowledgement information transmitted by the terminal is not received within a predetermined time, the radio resource management unit 40 needs to release the virtual HARQ process.
As can be seen from the above processing procedure, in the embodiment of the present invention, the scheduling policy of the virtual HARQ Process specifically includes:
(1) Defining a virtual HARQ entity, maintained by the radio resource management unit 40;
(2) The baseband transmission unit 42 uses virtual HARQ scheduling when scheduling;
(3) After receiving the terminal-side HARQ Process acknowledgement result, the baseband receiving unit 44 uses the real HARQ Process to replace the virtual HARQ Process by the radio resource management unit 40.
In summary, in the embodiment of the present invention, the base station uses the virtual HARQ Process during scheduling, and replaces the virtual HARQ Process when receiving the feedback result from the terminal side, so as to solve the problem that the HARQ Process is stopped and the time length is longer than that of the terminal side due to the advanced scheduling of the base station and the physical layer processing delay, so as to obtain the higher downlink peak flow of the eMTC terminal.
Device example two
According to an embodiment of the present invention, there is provided a base station virtual HARQ process scheduling apparatus, as shown in fig. 5, including: a memory 50, a processor 52 and a computer program stored on the memory 50 and executable on the processor 52, which when executed by the processor 52 performs the following method steps:
step 201, applying for a virtual HARQ process to perform radio resource scheduling;
before performing step 201, the base station needs to define and maintain the virtual HARQ entity in advance, so as to apply for the virtual HARQ entity to schedule later, and store relevant scheduling information.
In step 201, after 8 HARQ processes in the protocol run out, a predefined virtual HARQ process may be applied for radio resource scheduling, or a predefined virtual HARQ process may be directly applied for radio resource scheduling.
Step 202, based on the radio resource scheduling, transmitting data to the terminal through a downlink control information DCI subframe by adopting a real HARQ process. Specifically:
based on radio resource scheduling, transmitting DCI subframes by adopting a real HARQ process, and based on downlink control information (Downlink Control Informatio, DCI) subframes, transmitting data to a terminal on a downlink physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) air interface;
in the embodiment of the invention, the adopted real HARQ process is the real HARQ process replaced in the previous period.
Step 203, after receiving the feedback acknowledgement information of the HARQ process sent by the terminal, the virtual HARQ process is replaced by the real HARQ process, so that the base station can send the DCI subframe by using the real HARQ process in the next period.
In step 203, the base station needs to determine whether the HARQ Process of the terminal is completed, that is, if the base station receives that the HARQ Process feedback acknowledgement information sent by the terminal is NACK, an appropriate real HARQ Process is selected to replace the virtual HARQ Process.
In addition, in the embodiment of the present invention, if the feedback acknowledgement information of the HARQ process sent by the terminal is not received within a predetermined time, the virtual HARQ process needs to be released.
As can be seen from the above processing procedure, in the embodiment of the present invention, the scheduling policy of the virtual HARQ Process specifically includes:
(1) Defining a virtual HARQ entity, which is maintained by a base station;
(2) The base station uses virtual HARQ scheduling when scheduling;
(3) And after receiving the terminal side HARQ Process confirmation result, the base station uses the real HARQ Process to replace the virtual HARQ Process.
Fig. 3 is a schematic diagram of virtual HARQ Process scheduling in the present invention, as shown in fig. 3, a virtual HARQ Process entity is used in base station scheduling, after receiving real HARQ Process feedback, a real HARQ Process is used to replace the virtual HARQ entity, and then DCI information is sent, which specifically includes the following steps:
in step 301, when a scheduling request is made on the terminal side, the base station uses the virtual HARQ to perform scheduling, and obtains information such as a resource block and a modulation-demodulation order.
Step 302, based on radio resource scheduling, the DCI subframe is issued by using the real HARQ process replaced by the previous period.
Step 303, based on the indication of the DCI subframe, transmitting data to the terminal on the PDSCH air interface;
step 304, after receiving the feedback of the terminal side HARQ Process acknowledgement, the base station replaces the virtual HARQ Process schedule with the real HARQ Process.
Device example III
An embodiment of the present invention provides a computer-readable storage medium having stored thereon a program for realizing information transmission, which when executed by the processor 52 realizes the following method steps:
step 201, applying for a virtual HARQ process to perform radio resource scheduling;
before performing step 201, the base station needs to define and maintain the virtual HARQ entity in advance, so as to apply for the virtual HARQ entity to schedule later, and store relevant scheduling information.
In step 201, after 8 HARQ processes in the protocol run out, a predefined virtual HARQ process may be applied for radio resource scheduling, or a predefined virtual HARQ process may be directly applied for radio resource scheduling.
Step 202, based on the radio resource scheduling, transmitting data to the terminal through a downlink control information DCI subframe by adopting a real HARQ process. Specifically:
based on radio resource scheduling, transmitting DCI subframes by adopting a real HARQ process, and based on downlink control information (Downlink Control Informatio, DCI) subframes, transmitting data to a terminal on a downlink physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) air interface;
in the embodiment of the invention, the adopted real HARQ process is the real HARQ process replaced in the previous period.
Step 203, after receiving the feedback acknowledgement information of the HARQ process sent by the terminal, the virtual HARQ process is replaced by the real HARQ process, so that the base station can send the DCI subframe by using the real HARQ process in the next period.
In step 203, the base station needs to determine whether the HARQ Process of the terminal is completed, that is, if the base station receives that the HARQ Process feedback acknowledgement information sent by the terminal is NACK, an appropriate real HARQ Process is selected to replace the virtual HARQ Process.
In addition, in the embodiment of the present invention, if the feedback acknowledgement information of the HARQ process sent by the terminal is not received within a predetermined time, the virtual HARQ process needs to be released.
As can be seen from the above processing procedure, in the embodiment of the present invention, the scheduling policy of the virtual HARQ Process specifically includes:
(1) Defining a virtual HARQ entity, which is maintained by a base station;
(2) The base station uses virtual HARQ scheduling when scheduling;
(3) And after receiving the terminal side HARQ Process confirmation result, the base station uses the real HARQ Process to replace the virtual HARQ Process.
Fig. 3 is a schematic diagram of virtual HARQ Process scheduling in the present invention, as shown in fig. 3, a virtual HARQ Process entity is used in base station scheduling, after receiving real HARQ Process feedback, a real HARQ Process is used to replace the virtual HARQ entity, and then DCI information is sent, which specifically includes the following steps:
in step 301, when a scheduling request is made on the terminal side, the base station uses the virtual HARQ to perform scheduling, and obtains information such as a resource block and a modulation-demodulation order.
Step 302, based on radio resource scheduling, the DCI subframe is issued by using the real HARQ process replaced by the previous period.
Step 303, based on the indication of the DCI subframe, transmitting data to the terminal on the PDSCH air interface;
step 304, after receiving the feedback of the terminal side HARQ Process acknowledgement, the base station replaces the virtual HARQ Process schedule with the real HARQ Process.
The computer readable storage medium of the present embodiment includes, but is not limited to: ROM, RAM, magnetic or optical disks, etc.
In summary, in the embodiment of the present invention, the base station uses the virtual HARQ Process during scheduling, and replaces the virtual HARQ Process when receiving the feedback result from the terminal side, so as to solve the problem that the HARQ Process is stopped and the time length is longer than that of the terminal side due to the advanced scheduling of the base station and the physical layer processing delay, so as to obtain the higher downlink peak flow of the eMTC terminal.
It will be appreciated by those skilled in the art that the modules or steps of the invention described above may be implemented in a general purpose computing device, they may be concentrated on a single computing device, or distributed across a network of computing devices, they may alternatively be implemented in program code executable by computing devices, so that they may be stored in a memory device for execution by computing devices, and in some cases, the steps shown or described may be performed in a different order than that shown or described, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps within them may be fabricated into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A base station virtual HARQ process scheduling method, comprising:
applying for a virtual hybrid automatic repeat request (HARQ) process to perform wireless resource scheduling;
based on the radio resource scheduling, transmitting data to a terminal through a downlink control information DCI subframe by adopting a real HARQ process;
after receiving the feedback confirmation information of the HARQ process sent by the terminal, replacing the virtual HARQ process with a real HARQ process so that the base station can send the DCI subframe by adopting the real HARQ process in the next period.
2. The method of claim 1, wherein prior to applying for virtual HARQ processes for radio resource scheduling, the method further comprises:
virtual HARQ processes are predefined and maintained.
3. The method of claim 1 or 2, wherein applying for virtual HARQ processes for radio resource scheduling comprises:
and after the real HARQ process is used, applying for the virtual HARQ process to perform wireless resource scheduling.
4. The method of claim 1, wherein after applying for the virtual HARQ process for radio resource scheduling, the method further comprises:
information of radio resource scheduling is stored.
5. The method of claim 1, wherein after receiving HARQ process feedback acknowledgement information sent by the terminal, replacing the virtual HARQ process with a real HARQ process comprises:
and when receiving the HARQ process feedback confirmation information sent by the terminal as NACK, selecting a proper real HARQ process to replace the virtual HARQ process.
6. The method of claim 1, wherein the method further comprises:
and when the HARQ process feedback confirmation information sent by the terminal is not received within the preset time, releasing the virtual HARQ process.
7. The method of claim 1, wherein transmitting data to a terminal over a downlink control information, DCI, subframe using a true HARQ process based on the radio resource schedule comprises:
based on the radio resource scheduling, a real HARQ process is adopted to issue a DCI subframe, and based on the DCI subframe, data is sent to a terminal on a physical downlink shared channel PDSCH air interface.
8. A base station virtual HARQ process scheduling device is characterized in that,
the wireless resource management unit is used for applying for the virtual hybrid automatic repeat request (HARQ) process to carry out wireless resource scheduling;
the baseband sending unit is used for sending data to the terminal through a downlink control information DCI subframe by adopting a real HARQ process based on the radio resource scheduling;
the base band receiving unit is used for receiving HARQ process feedback confirmation information sent by the terminal;
the radio resource management unit is further configured to replace the virtual HARQ process with a real HARQ process after the baseband receiving unit receives the feedback acknowledgement information of the HARQ process, so that the base station can send the DCI subframe by using the real HARQ process in the next period.
9. A base station virtual HARQ process scheduling apparatus, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the base station virtual HARQ process scheduling method according to any of claims 1 to 7.
10. A computer readable storage medium, characterized in that one or more programs are stored on the computer readable storage medium, which when executed by a processor implement the steps of the base station virtual HARQ process scheduling method according to any of claims 1 to 7.
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