CN111491386A - Method and device for reducing service delay in wireless communication system - Google Patents
Method and device for reducing service delay in wireless communication system Download PDFInfo
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- CN111491386A CN111491386A CN201910078427.6A CN201910078427A CN111491386A CN 111491386 A CN111491386 A CN 111491386A CN 201910078427 A CN201910078427 A CN 201910078427A CN 111491386 A CN111491386 A CN 111491386A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1221—Wireless traffic scheduling based on age of data to be sent
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- 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
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
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- 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
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- Computer Networks & Wireless Communication (AREA)
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- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the invention provides a method and a device for reducing service delay in a wireless communication system. The method comprises the steps that a physical layer of the UE decodes received downlink data sent by a base station; after decoding, the physical layer immediately sends a downlink scheduling instruction to the MAC layer of the UE to trigger the downlink scheduling of the MAC layer; according to the method and the device, the uplink scheduling of the MAC layer is triggered according to a preset fixed time sequence, a physical layer immediately sends a downlink scheduling instruction to the MAC after decoding is successful, so that an industrial terminal can send uplink data to the MAC layer before uplink scheduling is executed, and then the MAC layer triggers the uplink scheduling instruction according to the fixed time sequence, so that the uplink data can be sent to the main station in the next frame, and the transmission delay of the uplink data is reduced.
Description
Technical Field
The embodiment of the invention relates to the technical field of wireless communication, in particular to a method and a device for reducing service delay in a wireless communication system.
Background
The 230MHz frequency band is mainly applied to a data transmission radio station to undertake remote data acquisition work, only can be used for some simple communication applications due to the very low rate of provision, and cannot meet the increasing service requirements of a smart grid and a sensor network.
In the currently applied 230MHz frequency band bandwidth access system, the field application environment is complex, and the signal fluctuation is obvious, which puts a very strict requirement on the actual system application that both the correct data transmission and the transmission delay are to be guaranteed. A corresponding scheme of Hybrid Automatic Repeat reQuest (HARQ) is provided for a signal fluctuation problem, and for a system latency requirement, processing of data by current system User Equipment (UE) is issuing of a downlink instruction and sending of uplink feedback data, after receiving the downlink instruction, an electric meter needs to wait for returning the data, and the current system cannot receive the electric meter data at a current frame, so that the current system cannot prepare the uplink data for sending a next frame, and at least waits for one frame.
At present, L TE system has a high requirement for service delay, especially some specific quality of service indicators (QoS ClassIdentifier, QCI) types (such as accurate load control service), require accurate and fast response to ensure effective control of relays and the like, if time wasted in retransmission of signal differences may cause occurrence of timeout problems, affect timely processing of data and cause unpredictable consequences, and the process in the prior art wastes a large amount of transmission resources of empty ports, and cannot meet the requirement of high-delay users.
Disclosure of Invention
The embodiment of the invention provides a method and a device for reducing service delay in a wireless communication system, which are used for solving the problems that a large amount of transmission resources of air interfaces are wasted and the requirements of high-delay users cannot be met in the prior art.
In a first aspect, an embodiment of the present invention provides a method for reducing service latency in a wireless communication system, including:
the physical layer of the UE decodes the received downlink data sent by the base station;
after decoding, the physical layer immediately sends a downlink scheduling instruction to the MAC layer of the UE to trigger the downlink scheduling of the MAC layer;
and triggering the uplink scheduling of the MAC layer according to a preset fixed time sequence.
In a second aspect, an embodiment of the present invention provides an apparatus for reducing service latency in a wireless communication system, including:
a physical layer module, configured to decode the received downlink data sent by the base station;
the physical layer module is also used for sending a downlink scheduling instruction to the MAC layer module immediately after decoding to trigger downlink scheduling of the MAC layer module;
and the MAC layer module is also used for triggering uplink scheduling according to a preset fixed time sequence.
In a third aspect, an embodiment of the present invention further provides an electronic device, including:
a processor, a memory, a communication interface, and a communication bus; wherein the content of the first and second substances,
the processor, the memory and the communication interface complete mutual communication through the communication bus;
the communication interface is used for information transmission between communication devices of the electronic equipment;
the memory stores computer program instructions executable by the processor, the processor invoking the program instructions to perform a method comprising:
the physical layer of the UE decodes the received downlink data sent by the base station;
after decoding, the physical layer immediately sends a downlink scheduling instruction to the MAC layer of the UE to trigger the downlink scheduling of the MAC layer;
and triggering the uplink scheduling of the MAC layer according to a preset fixed time sequence.
In a fourth aspect, an embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the following method:
the physical layer of the UE decodes the received downlink data sent by the base station;
after decoding, the physical layer immediately sends a downlink scheduling instruction to the MAC layer of the UE to trigger the downlink scheduling of the MAC layer;
and triggering the uplink scheduling of the MAC layer according to a preset fixed time sequence.
According to the method and the device for reducing the service delay in the wireless communication system, the physical layer immediately sends the downlink scheduling instruction to the MAC after the decoding is successful, so that an industrial terminal can send uplink data to the MAC layer before uplink scheduling is executed, and then the MAC layer triggers the uplink scheduling instruction according to a fixed time sequence, so that the uplink data can be sent to the master station in the next frame, and the transmission delay of the uplink data is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a flowchart of a method for reducing service latency in a wireless communication system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an apparatus for reducing service latency in a wireless communication system according to an embodiment of the present invention;
fig. 3 illustrates a physical structure diagram of an electronic device.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a flowchart of a method for reducing service latency in a wireless communication system according to an embodiment of the present invention, as shown in fig. 1, the method includes:
step S01, the physical layer of the UE decodes the received downlink data transmitted by the base station.
The private network system of the embodiment of the invention comprises a plurality of industry terminals and at least one master station, wherein each industry terminal is connected with corresponding User Equipment (UE), each master station is connected with at least one base station through a core network, and the master station and the industry terminals carry out information interaction through the UE and the base stations.
And when the master station is ready to call corresponding data from the industry terminal, downlink data is sent to the UE corresponding to the industry terminal through the base station. After receiving the downlink data, the physical layer of the UE decodes the downlink data according to preset information such as modulation and demodulation, so as to obtain decoded data.
Step S02, after decoding, the physical layer immediately sends a downlink scheduling instruction to the MAC layer of the UE to trigger MAC layer downlink scheduling.
According to the existing communication protocol, after a physical layer of the UE receives downlink data, a Media Access Control (MAC) layer simultaneously executes downlink scheduling and uplink scheduling according to a preset fixed timing, and during uplink scheduling, since an industrial terminal does not yet send uplink data to be transmitted to the MAC layer according to the downlink scheduling, the MAC layer cannot request a required uplink resource from the base station, and cannot send the uplink data to the base station in a next frame and transmit the uplink data to the master station.
In the embodiment of the present invention, after the decoding of the physical layer of the UE is successful, the obtained decoded data is immediately sent to the MAC layer, and a downlink scheduling instruction is sent to the MAC layer at the same time, and the MAC layer demultiplexes the decoded data according to the downlink scheduling instruction and delivers the demultiplexed data to a Radio link layer Control protocol (Radio L ink Control, R L C) layer for task processing, so that the downlink data can be successfully delivered to a higher layer, and then the decoded data is sent to an industrial terminal to retrieve the required uplink data.
And step S03, triggering the MAC layer uplink scheduling according to a preset fixed time sequence.
And according to a preset fixed time sequence, before the current frame is interrupted, the MAC layer is triggered to execute uplink scheduling.
By means of downlink scheduling, before uplink scheduling is executed, uplink data of the industry terminal is received, so that uplink resources of the next frame can be requested to the base station according to the data volume of the uplink data, and the uplink data can be sent to the main station through the base station in the next frame.
According to the embodiment of the invention, the physical layer sends the downlink scheduling instruction to the MAC immediately after the decoding is successful, so that an industrial terminal can send the uplink data to the MAC layer before the uplink scheduling is executed, and then the MAC layer triggers the uplink scheduling instruction according to the fixed time sequence, so that the uplink data can be sent to the main station in the next frame, and the transmission delay of the uplink data is reduced.
Based on the above embodiment, further, the method further includes:
the MAC layer receives uplink data sent by an industry terminal;
and the MAC layer sends the uplink data to the physical layer so that the physical layer prepares to send the uplink data to the base station in the next frame.
And the industry terminal sends the uplink data to be replied to the main station to the UE according to the received downlink scheduling and downlink data. And the MAC layer of the UE requests corresponding uplink resources when executing uplink scheduling according to the uplink data.
And then after the uplink resources are obtained, the MAC layer multiplexes the uplink data when the frame is the frame and sends the uplink data to the physical layer so as to inform the physical layer to send the uplink data to the base station in a next frame.
The MAC layer executes uplink scheduling according to the received uplink data, multiplexes the uplink data and informs the physical layer to send the uplink data to the base station in a next frame, thereby reducing the transmission delay of the uplink data.
Fig. 2 is a schematic structural diagram of a device for reducing service latency in a wireless communication system according to an embodiment of the present invention, and as shown in fig. 2, the device includes: a physical layer module 10 and a MAC layer module 11, wherein,
the physical layer module 10 is configured to decode the received downlink data sent by the base station; the physical layer module 10 is further configured to send a downlink scheduling instruction to the MAC layer module 11 immediately after the decoding is completed, so as to trigger downlink scheduling of the MAC layer module 11; the MAC layer module 11 is further configured to trigger uplink scheduling according to a preset fixed time sequence. Specifically, the method comprises the following steps:
when the master station is ready to retrieve corresponding data from an industry terminal, downlink data is sent to the physical layer module 10 corresponding to the industry terminal through the base station. After receiving the downlink data, the physical layer module 10 decodes the downlink data according to preset information such as modulation and demodulation, so as to obtain decoded data.
After the physical layer module 10 successfully decodes, it will immediately send the obtained decoded data to the MAC layer module 11, and at the same time send a downlink scheduling instruction to the MAC layer module 11, and the MAC layer module 11 demultiplexes and delivers the decoded data to a Radio link layer Control protocol (Radio L ink Control, R L C) layer module for task processing according to the downlink scheduling instruction, so that the downlink data can be successfully delivered to a higher layer module, and then the decoded data is sent to an industrial terminal to retrieve the required uplink data.
According to a preset fixed time sequence, before the current frame is interrupted, the MAC layer module 11 is triggered to execute uplink scheduling.
Through downlink scheduling, the MAC layer module 11 has received uplink data of the industry terminal before performing uplink scheduling, so that an uplink resource of a next frame can be requested from the base station according to the data amount of the uplink data, and the uplink data can be transmitted to the master station through the base station in the next frame.
The apparatus provided in the embodiment of the present invention is configured to execute the method, and the functions of the apparatus refer to the method embodiment specifically, and detailed method flows thereof are not described herein again.
In the embodiment of the present invention, the physical layer module 10 sends the downlink scheduling instruction to the MAC layer module 11 immediately after successful decoding, so that the industrial terminal can send the uplink data to the MAC layer module 11 before performing uplink scheduling, and then the MAC layer module 11 triggers the uplink scheduling instruction according to a fixed timing sequence, so that the uplink data can be sent to the master station in the next frame, thereby reducing the transmission delay of the uplink data.
Based on the above embodiment, further, the MAC layer module is further configured to receive uplink data sent by an industry terminal; and sending the uplink data to the physical layer module so that the physical layer module prepares to send the uplink data to the base station in the next frame.
And the industry terminal sends the uplink data to be replied to the main station to the MAC layer module according to the received downlink scheduling and downlink data. And the MAC layer module requests corresponding uplink resources when executing uplink scheduling according to the uplink data.
Then, after obtaining the uplink resource, the MAC layer module multiplexes the uplink data as a frame and sends the uplink data to the physical layer module, so as to notify the physical layer module to send the uplink data to the base station in a next frame.
The apparatus provided in the embodiment of the present invention is configured to execute the method, and the functions of the apparatus refer to the method embodiment specifically, and detailed method flows thereof are not described herein again.
In the embodiment of the invention, the MAC layer module executes uplink scheduling according to the received uplink data, multiplexes the uplink data and informs the physical layer module to send the uplink data to the base station in a downlink frame, thereby reducing the transmission delay of the uplink data.
Fig. 3 illustrates a physical structure diagram of an electronic device, and as shown in fig. 3, the server may include: a processor (processor)810, a communication Interface 820, a memory 830 and a communication bus 840, wherein the processor 810, the communication Interface 820 and the memory 830 communicate with each other via the communication bus 840. The processor 810 may call logic instructions in the memory 830 to perform the following method: the physical layer of the UE decodes the received downlink data sent by the base station; after decoding, the physical layer immediately sends a downlink scheduling instruction to the MAC layer of the UE to trigger the downlink scheduling of the MAC layer; and triggering the uplink scheduling of the MAC layer according to a preset fixed time sequence.
Further, embodiments of the present invention disclose a computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions, which when executed by a computer, the computer is capable of performing the methods provided by the above-mentioned method embodiments, for example, comprising: the physical layer of the UE decodes the received downlink data sent by the base station; after decoding, the physical layer immediately sends a downlink scheduling instruction to the MAC layer of the UE to trigger the downlink scheduling of the MAC layer; and triggering the uplink scheduling of the MAC layer according to a preset fixed time sequence.
Further, an embodiment of the present invention provides a non-transitory computer-readable storage medium storing computer instructions, which cause the computer to perform the method provided by the above method embodiments, for example, including: the physical layer of the UE decodes the received downlink data sent by the base station; after decoding, the physical layer immediately sends a downlink scheduling instruction to the MAC layer of the UE to trigger the downlink scheduling of the MAC layer; and triggering the uplink scheduling of the MAC layer according to a preset fixed time sequence.
Those of ordinary skill in the art will understand that: in addition, the logic instructions in the memory 830 may be implemented in software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A method for reducing traffic delay in a wireless communication system, comprising:
the physical layer of the UE decodes the received downlink data sent by the base station;
after decoding, the physical layer immediately sends a downlink scheduling instruction to the MAC layer of the UE to trigger the downlink scheduling of the MAC layer;
and triggering the uplink scheduling of the MAC layer according to a preset fixed time sequence.
2. The method of claim 1, further comprising:
the MAC layer receives uplink data sent by an industry terminal;
and the MAC layer sends the uplink data to the physical layer so that the physical layer prepares to send the uplink data to the base station in the next frame.
3. An apparatus for reducing traffic latency in a wireless communication system, comprising:
a physical layer module, configured to decode the received downlink data sent by the base station;
the physical layer module is also used for sending a downlink scheduling instruction to the MAC layer module immediately after decoding to trigger downlink scheduling of the MAC layer module;
and the MAC layer module is also used for triggering uplink scheduling according to a preset fixed time sequence.
4. The apparatus of claim 3, wherein the MAC layer module is further configured to receive uplink data transmitted by an industry terminal; and sending the uplink data to the physical layer module so that the physical layer module prepares to send the uplink data to the base station in the next frame.
5. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the program to implement the steps of the method for reducing traffic latency according to any one of claims 1 to 4.
6. A non-transitory computer readable storage medium, having stored thereon a computer program, which, when being executed by a processor, carries out the steps of the method for reducing traffic latency according to any one of claims 1 to 4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910078427.6A CN111491386A (en) | 2019-01-28 | 2019-01-28 | Method and device for reducing service delay in wireless communication system |
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| CN201910078427.6A CN111491386A (en) | 2019-01-28 | 2019-01-28 | Method and device for reducing service delay in wireless communication system |
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| CN101350836A (en) * | 2008-09-16 | 2009-01-21 | 华为技术有限公司 | Ganged method and apparatus for information transmission of CDMA system |
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| CN108075874A (en) * | 2017-12-22 | 2018-05-25 | 上海华为技术有限公司 | A kind of resource regulating method and base station |
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2019
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Patent Citations (6)
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| US6683866B1 (en) * | 1999-10-29 | 2004-01-27 | Ensemble Communications Inc. | Method and apparatus for data transportation and synchronization between MAC and physical layers in a wireless communication system |
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| CN101188865A (en) * | 2007-12-14 | 2008-05-28 | 上海华为技术有限公司 | A method and device for reducing transmission delay of uplink signaling |
| CN101350836A (en) * | 2008-09-16 | 2009-01-21 | 华为技术有限公司 | Ganged method and apparatus for information transmission of CDMA system |
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