CN111490859A - Switching method and device of ARQ mode - Google Patents
Switching method and device of ARQ mode Download PDFInfo
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- CN111490859A CN111490859A CN201910084412.0A CN201910084412A CN111490859A CN 111490859 A CN111490859 A CN 111490859A CN 201910084412 A CN201910084412 A CN 201910084412A CN 111490859 A CN111490859 A CN 111490859A
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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]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
Abstract
The embodiment of the invention provides a switching method and a device of an ARQ mode, wherein the method comprises the following steps: monitoring data information sent by a sender; if the monitoring result of the data information is judged to meet a first preset condition, switching the current ARQ mode into a first ARQ mode; the first ARQ mode is an end-to-end ARQ mode. The device performs the above method. The method and the device for switching the ARQ mode provided by the embodiment of the invention can fully exert the advantages of the end-to-end ARQ mode by switching the hop-by-hop ARQ mode into the end-to-end ARQ mode in the scene of the switching process of the service base station, thereby ensuring that data is normally forwarded.
Description
Technical Field
The embodiment of the invention relates to the technical field of IAB (inter-Access bus), in particular to a method and a device for switching an ARQ (automatic repeat request) mode.
Background
3GPP 5G has introduced a new subject IAB (Integrated Access and backhaul). FIG. 1 is a schematic diagram of a prior art IAB, shown in FIG. 1, comprising IAB-donor IAB-node. Among them, the IAB-donor provides a connection to the cn (core network) core network, and the IAB-node serves as an intermediate node to connect the UE and the IAB-donor.
In the prior art, Automatic Repeat Request (ARQ) is a technology for ensuring correct data transmission at a link layer, and includes initial transmission, query, acknowledgement, retransmission, discard, and upload. There are two ARQ modes in the IAB, including a hop-by-hop ARQ mode and an end-to-end ARQ mode, and fig. 2 is a schematic diagram of a prior art hop-by-hop ARQ mode; FIG. 3 is a diagram illustrating an end-to-end ARQ mode according to the prior art; both ARQ modes are currently reserved in the IAB. The two ARQ modes have advantages and disadvantages, and the prior art adopts a single configuration mode to configure the ARQ modes without distinguishing scenes, and cannot fully exert the advantages of each ARQ mode.
Therefore, how to avoid the above-mentioned drawbacks, under the scenario of the handover process of the serving base station, the advantage of the end-to-end arq mode is fully exerted, so as to ensure the normal forwarding of data, which is a problem to be solved urgently.
Disclosure of Invention
To solve the problems in the prior art, embodiments of the present invention provide a method and an apparatus for switching an ARQ mode.
In a first aspect, an embodiment of the present invention provides a method for switching an ARQ mode, where the method includes:
monitoring data information sent by a sender;
if the monitoring result of the data information is judged to meet a first preset condition, switching the current ARQ mode into a first ARQ mode; the first ARQ mode is an end-to-end ARQ mode.
In a second aspect, an embodiment of the present invention provides an apparatus for switching an ARQ mode, where the apparatus includes:
the monitoring unit is used for monitoring data information sent by a sender;
the switching unit is used for switching the current ARQ mode into a first ARQ mode if the monitoring result of the data information is judged to meet a first preset condition; the first ARQ mode is an end-to-end ARQ mode.
In a third aspect, an embodiment of the present invention provides an electronic device, including: a processor, a memory, and a bus, wherein,
the processor and the memory are communicated with each other through the bus;
the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform a method comprising:
monitoring data information sent by a sender;
if the monitoring result of the data information is judged to meet a first preset condition, switching the current ARQ mode into a first ARQ mode; the first ARQ mode is an end-to-end ARQ mode.
In a fourth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium, including:
the non-transitory computer readable storage medium stores computer instructions that cause the computer to perform a method comprising:
monitoring data information sent by a sender;
if the monitoring result of the data information is judged to meet a first preset condition, switching the current ARQ mode into a first ARQ mode; the first ARQ mode is an end-to-end ARQ mode.
The method and the device for switching the ARQ mode provided by the embodiment of the invention can fully exert the advantages of the end-to-end ARQ mode by switching the hop-by-hop ARQ mode into the end-to-end ARQ mode in the scene of the switching process of the service base station, thereby ensuring that data is normally forwarded.
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 an architectural diagram of a prior art IAB;
FIG. 2 is a diagram illustrating a prior art hop-by-hop ARQ scheme;
FIG. 3 is a diagram illustrating an end-to-end ARQ mode according to the prior art;
FIG. 4 is a flow chart illustrating an ARQ mode switching method according to an embodiment of the invention;
fig. 5 is a method for switching ARQ modes according to another embodiment of the present invention;
FIG. 6 is a block diagram of an ARQ mode switching apparatus according to an embodiment of the invention;
fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
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. 4 is a flowchart illustrating a method for switching an ARQ mode according to an embodiment of the present invention, and as shown in fig. 4, the method for switching an ARQ mode according to an embodiment of the present invention includes the following steps:
s401: and monitoring data information sent by a sender.
Specifically, the device monitors data information sent by the sender. Fig. 5 is a method for switching ARQ modes according to another embodiment of the present invention, and as shown in fig. 5, the apparatus may be the IAB-node1, the IAB-node2 or the IAB-node in fig. 5. If the device is an IAB-node1, the sender may be a UE; if the device is an IAB-node2, the sender may be IAB-node 1; similarly, if the device is an IAB-node, the sender may be IAB-node 2. For the sender being UE, the data information may include MR data, i.e. Measurement report in fig. 5, and for the MR data, the specific monitored content may include a numerical value of the MR data. The sending party is IAB-node1, the data information may include data to be transmitted (not shown in fig. 5), that is, IAB-node1 sends the data to be transmitted to IAB-node2, and for the data to be transmitted, the monitored specific content may include a signal quality evaluation result of the data to be transmitted, or a load amount, that is, a data amount of the data to be transmitted, and descriptions of other nodes are not repeated.
S402: if the monitoring result of the data information is judged to meet a first preset condition, switching the current ARQ mode into a first ARQ mode; the first ARQ mode is an end-to-end ARQ mode.
Specifically, if the device judges that the monitoring result of the data information meets a first preset condition, the device switches the current ARQ mode into a first ARQ mode; the first ARQ mode is an end-to-end ARQ mode. The current ARQ mode at this time may be a second ARQ mode, i.e., a hop-by-hop ARQ mode. The application scene is as follows: due to the location change of the UE1, the IAB-node1 of the original serving UE1 is no longer suitable for serving the UE1 (in terms of weak signal strength of the UE 1), the IAB-node1 of the original serving UE1 needs to be switched to the IAB-node2, and the IAB-node2 continues to serve the UE 1. Due to the fact that data can be left in the IAB node and cannot be forwarded out if the hop-by-hop ARQ mode is continuously adopted in the handover process.
Further, if the sender is UE, and the value of the MR data is judged to be smaller than the preset threshold, the current ARQ mode is switched to the first ARQ mode. The preset threshold may be set autonomously according to the actual situation, and the step determines whether the serving UE1 base station is in handover by whether the value of the MR data is smaller than the preset threshold, that is, if the value of the MR data is smaller than the preset threshold, it determines that the serving UE1 base station is in handover, and at this time, the second ARQ mode is switched to the first ARQ mode. That is, if the value of the MR data is greater than or equal to the preset threshold, it is determined that the serving UE1 has completed the handover, and at this time, the first ARQ mode is switched to the second ARQ mode.
Further, if the sending party is an IAB-node, if it is determined that the signal quality evaluation result of the data to be transmitted is lower than a preset expected value, the current ARQ mode is switched to the first ARQ mode. The signal quality evaluation method in the embodiment of the present invention is not particularly limited. The preset desired value can be set autonomously according to actual conditions, such as excellence, goodness and the like. This step determines whether the serving UE1 base station is in handover by whether the signal quality assessment of the data to be transmitted is below a preset expected value.
Or the like, or, alternatively,
and if the load of the data to be transmitted is judged and known to be higher than the preset load, switching the current ARQ mode to a first ARQ mode. The load amount calculation method in the embodiment of the present invention is not particularly limited. The preset load amount can be set independently according to actual conditions. This step determines whether the serving UE1 base station is in handover by whether the load amount of the data to be transmitted is higher than a preset load amount. For the case that the sender is an IAB-node, refer to the above description that the sender is a UE, and are not described again.
The method for switching the ARQ mode provided by the embodiment of the invention can fully exert the advantages of the end-to-end ARQ mode by switching the hop-by-hop ARQ mode into the end-to-end ARQ mode in the scene of the switching process of the service base station, thereby ensuring that data is normally forwarded.
On the basis of the above embodiment, the sender is UE, and the data information includes MR data; correspondingly, if the monitoring result of the data information is judged to meet the first preset condition, the current ARQ mode is switched to the first ARQ mode, which includes:
and if the numerical value of the MR data is judged to be smaller than a preset threshold value, switching the current ARQ mode to a first ARQ mode.
Specifically, if the device determines that the value of the MR data is smaller than the preset threshold value, the device switches the current ARQ mode to the first ARQ mode. Reference may be made to the above embodiments, which are not described in detail.
The switching method of the ARQ mode provided by the embodiment of the invention further effectively realizes that the advantage of the end-to-end ARQ mode is fully exerted under the scene of the switching process of the service base station, thereby ensuring the normal forwarding of data.
On the basis of the above embodiment, the sender is an IAB-node, and the data information includes data to be transmitted; correspondingly, if the monitoring result of the data information is judged to meet the first preset condition, the current ARQ mode is switched to the first ARQ mode, which includes:
and if the signal quality evaluation result of the data to be transmitted is judged to be lower than a preset expected value, switching the current ARQ mode to the first ARQ mode.
Specifically, if the device determines that the signal quality evaluation result of the data to be transmitted is lower than a preset expected value, the device switches the current ARQ mode to the first ARQ mode. Reference may be made to the above embodiments, which are not described in detail.
Or the like, or, alternatively,
and if the load of the data to be transmitted is judged and known to be higher than the preset load, switching the current ARQ mode to a first ARQ mode.
Specifically, if the device determines that the load of the data to be transmitted is higher than the preset load, the device switches the current ARQ mode to the first ARQ mode. Reference may be made to the above embodiments, which are not described in detail.
The switching method of the ARQ mode provided by the embodiment of the invention further effectively realizes that the advantage of the end-to-end ARQ mode is fully exerted under the scene of the switching process of the service base station, thereby ensuring the normal forwarding of data.
On the basis of the above embodiment, after the step of switching the current ARQ mode to the first ARQ mode, the method further includes:
and issuing a message of negotiating and changing the ARQ mode to other transmission nodes in the transmission path of the data information so that each other transmission node respectively switches the current ARQ mode corresponding to each other into the first ARQ mode.
Specifically, the apparatus issues a message for negotiating an ARQ mode change to other transmission nodes in the transmission path of the data information, so that each other transmission node switches the current ARQ mode corresponding to the other transmission node to the first ARQ mode, respectively. Illustrated with reference to fig. 5 is as follows: after the IAB-node1 switches the current ARQ mode to the first ARQ mode, the IAB-node1 issues a message to negotiate change of ARQ mode to the IAB-node2 and the IAB-node, so that the IAB-node2 and the IAB-node respectively switch the respective corresponding current ARQ mode to the first ARQ mode. After the IAB-node2 switches the current ARQ mode to the first ARQ mode, the IAB-node2 issues a message for negotiating change of the ARQ mode to the IAB-node1 and the IAB-node, so that the IAB-node1 and the IAB-node respectively switch the respective corresponding current ARQ modes to the first ARQ mode, which is not described in detail for other nodes.
The switching method of the ARQ mode provided by the embodiment of the invention further ensures the synchronization of the switching of the ARQ mode of each node and optimizes the execution process of the method.
On the basis of the above embodiment, the method further includes:
and after receiving feedback messages returned by all other transmission nodes when the switching is completed, sending configuration information corresponding to the first ARQ mode to the UE so that the UE performs configuration according to the configuration information.
Specifically, after receiving feedback messages returned by all other transmission nodes when the handover is completed, the device sends configuration information corresponding to the first ARQ mode to the UE, so that the UE performs configuration according to the configuration information. Illustrated with reference to fig. 5 is as follows: after the IAB-node1 receives the feedback message a to be returned by the IAB-node2 when handover is completed and receives the feedback message b to be returned by the IAB-node2 when handover is completed (the receiving sequence of the feedback message a and the feedback message b is not specifically limited), the configuration information is sent to the UE1 through the IAB-node1, so that the UE1 performs configuration according to the configuration information, and the configured UE1 can be ensured to realize data transmission in the handover process of the serving base station. Further description of other nodes is omitted.
Further, it can also store the configuration information corresponding to each ARQ mode in the UE in advance, and when the specified ARQ mode needs to be switched, send the prompt information to notify the UE to configure according to the pre-stored configuration information and the specified ARQ mode.
The switching method of the ARQ mode provided by the embodiment of the invention further ensures the normal operation of data transmission between the UE and the IAB-node.
On the basis of the above embodiment, the method further includes:
if the monitoring result of the data information meets a second preset condition, switching the current ARQ mode into a second ARQ mode; the second ARQ mode is a hop-by-hop ARQ mode.
Specifically, if the device judges that the monitoring result of the data information meets a second preset condition, the device switches the current ARQ mode to a second ARQ mode; the second ARQ mode is a hop-by-hop ARQ mode. The current ARQ mode at this time may be the first ARQ mode, i.e., end-to-end ARQ mode. The application scene is as follows: the base station switching of the serving UE is completed, and at this time, the end-to-end ARQ mode is switched to the hop-by-hop ARQ mode, which can save system resources more.
It should be noted that: for the sender is UE, the data information includes MR data, and the monitoring result of the data information satisfies a second preset condition, which may specifically include:
and the value of the MR data is more than or equal to a preset threshold value.
For the sending party being an IAB-node, the data information including data to be transmitted, and the monitoring result of the data information meeting a second preset condition, the method may specifically include:
the signal quality evaluation result of the data to be transmitted reaches a preset expected value, or the load capacity of the data to be transmitted is not higher than (equal to or lower than) a preset load capacity.
After switching to the second ARQ mode, the method may also further comprise:
and issuing a message of negotiating and changing the ARQ mode to other transmission nodes in the transmission path of the data information so that each other transmission node respectively switches the current ARQ mode corresponding to each other into the second ARQ mode. The above description of switching to the first ARQ mode can be referred to, and will not be repeated.
And after receiving feedback messages returned by all other transmission nodes when the switching is completed, sending configuration information corresponding to the second ARQ mode to the UE so that the UE performs configuration according to the configuration information. The above description of switching to the first ARQ mode can be referred to, and will not be repeated.
The method for switching the ARQ mode provided by the embodiment of the invention can fully exert the advantages of the hop-by-hop ARQ mode by switching the end-to-end ARQ mode into the hop-by-hop ARQ mode under the scene of completing the switching of the service base station, thereby saving system resources.
Fig. 6 is a schematic structural diagram of an apparatus for switching an ARQ mode according to an embodiment of the present invention, and as shown in fig. 6, an embodiment of the present invention provides an apparatus for switching an ARQ mode, which includes a monitoring unit 601 and a switching unit 602, wherein:
the monitoring unit 601 is configured to monitor data information sent by a sender; the switching unit 602 is configured to switch the current ARQ mode to the first ARQ mode if it is determined that the monitoring result of the data information meets a first preset condition; the first ARQ mode is an end-to-end ARQ mode.
Specifically, the monitoring unit 601 is configured to monitor data information sent by a sender; the switching unit 602 is configured to switch the current ARQ mode to the first ARQ mode if it is determined that the monitoring result of the data information meets a first preset condition; the first ARQ mode is an end-to-end ARQ mode.
The switching device of the ARQ mode provided in the embodiment of the present invention switches the hop-by-hop ARQ mode to the end-to-end ARQ mode in the scenario of the service base station switching process, so that the advantage of the end-to-end ARQ mode can be fully exerted, and the normal forwarding of data is ensured.
The ARQ mode switching device provided in the embodiments of the present invention may be specifically configured to execute the processing flows of the above method embodiments, and the functions of the device are not described herein again, and refer to the detailed description of the above method embodiments.
Fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 7, the electronic device includes: a processor (processor)701, a memory (memory)702, and a bus 703;
the processor 701 and the memory 702 complete mutual communication through a bus 703;
the processor 701 is configured to call the program instructions in the memory 702 to execute the methods provided by the above-mentioned method embodiments, for example, including: monitoring data information sent by a sender; if the monitoring result of the data information is judged to meet a first preset condition, switching the current ARQ mode into a first ARQ mode; the first ARQ mode is an end-to-end ARQ mode.
The present embodiment discloses 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, enable the computer to perform the method provided by the above-mentioned method embodiments, for example, comprising: monitoring data information sent by a sender; if the monitoring result of the data information is judged to meet a first preset condition, switching the current ARQ mode into a first ARQ mode; the first ARQ mode is an end-to-end ARQ mode.
The present embodiments provide a non-transitory computer-readable storage medium storing computer instructions that cause the computer to perform the methods provided by the above method embodiments, for example, including: monitoring data information sent by a sender; if the monitoring result of the data information is judged to meet a first preset condition, switching the current ARQ mode into a first ARQ mode; the first ARQ mode is an end-to-end ARQ mode.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The above-described embodiments of the electronic device and the like are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may also be distributed on multiple 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 embodiments are only used for illustrating the technical solutions of the embodiments of the present invention, and are not limited thereto; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A method for switching between ARQ modes, comprising:
monitoring data information sent by a sender;
if the monitoring result of the data information is judged to meet a first preset condition, switching the current ARQ mode into a first ARQ mode; the first ARQ mode is an end-to-end ARQ mode.
2. The method of claim 1, wherein the sender is a UE, and the data information comprises MR data; correspondingly, if the monitoring result of the data information is judged to meet the first preset condition, the current ARQ mode is switched to the first ARQ mode, which includes:
and if the numerical value of the MR data is judged to be smaller than a preset threshold value, switching the current ARQ mode to a first ARQ mode.
3. The method of claim 1, wherein the sender is an IAB-node, and the data information includes data to be transmitted; correspondingly, if the monitoring result of the data information is judged to meet the first preset condition, the current ARQ mode is switched to the first ARQ mode, which includes:
if the signal quality evaluation result of the data to be transmitted is judged to be lower than a preset expected value, switching the current ARQ mode into a first ARQ mode;
or the like, or, alternatively,
and if the load of the data to be transmitted is judged and known to be higher than the preset load, switching the current ARQ mode to a first ARQ mode.
4. A method according to any of claims 1 to 3, wherein after the step of switching the current ARQ mode to the first ARQ mode, the method further comprises:
and issuing a message of negotiating and changing the ARQ mode to other transmission nodes in the transmission path of the data information so that each other transmission node respectively switches the current ARQ mode corresponding to each other into the first ARQ mode.
5. The method of claim 4, further comprising:
and after receiving feedback messages returned by all other transmission nodes when the switching is completed, sending configuration information corresponding to the first ARQ mode to the UE so that the UE performs configuration according to the configuration information.
6. The method of claim 1, further comprising:
if the monitoring result of the data information meets a second preset condition, switching the current ARQ mode into a second ARQ mode; the second ARQ mode is a hop-by-hop ARQ mode.
7. An apparatus for switching between ARQ modes, comprising:
the monitoring unit is used for monitoring data information sent by a sender;
the switching unit is used for switching the current ARQ mode into a first ARQ mode if the monitoring result of the data information is judged to meet a first preset condition; the first ARQ mode is an end-to-end ARQ mode.
8. An electronic device, comprising: a processor, a memory, and a bus, wherein,
the processor and the memory are communicated with each other through the bus;
the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the method of any of claims 1 to 6.
9. A non-transitory computer-readable storage medium storing computer instructions that cause a computer to perform the method of any one of claims 1 to 6.
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| US11381354B2 (en) | 2018-07-27 | 2022-07-05 | Samsung Electronics Co., Ltd. | Method and apparatus for wireless communication of wireless node in wireless communication system |
| CN116033486A (en) * | 2023-03-29 | 2023-04-28 | 广州世炬网络科技有限公司 | IAB host node switching pretreatment method, device, equipment and medium |
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| CN102868507A (en) * | 2012-09-19 | 2013-01-09 | 电子科技大学 | Segmented ARQ (Automatic Repeat Request) method based on transmission reliability |
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