CN110351799B - Control method in base station switching process and base station - Google Patents
Control method in base station switching process and base station Download PDFInfo
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- CN110351799B CN110351799B CN201910596099.9A CN201910596099A CN110351799B CN 110351799 B CN110351799 B CN 110351799B CN 201910596099 A CN201910596099 A CN 201910596099A CN 110351799 B CN110351799 B CN 110351799B
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- 238000005259 measurement Methods 0.000 claims description 19
- 238000004590 computer program Methods 0.000 claims description 6
- 238000012790 confirmation Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
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- 238000010295 mobile communication Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
Abstract
The embodiment of the invention provides a control method and a base station in a base station switching process, wherein the method comprises the following steps: judging whether any terminal meets the triggering condition of the high-frequency state report; if yes, executing a high-frequency state reporting process; the high frequency status reporting process comprises: if the downlink AM data for the terminal exists, the downlink AM data is sent after a P domain is configured in the downlink AM data so as to request a state report corresponding to the downlink AM data from the terminal; and if receiving the uplink AM data sent by the terminal, feeding back a status report corresponding to the uplink AM data to the terminal. The method and the base station provided by the embodiment of the invention ensure that the receiving state of each downlink AM data and each uplink AM data in the switching process of the base station can be timely known by the opposite terminal, thereby avoiding the AM data received by the opposite terminal from being repeatedly transmitted and further achieving the purpose of reducing the time delay.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a control method and a base station in a base station handover process.
Background
In a mobile communication system, base station handover generally occurs in an area with poor signals. When there is an abnormality in the switching environment, for example, there is strong external interference or the signal changes are severe, the error rate may rise sharply.
When a Radio Link layer Control protocol (RLC) is in an Acknowledged Mode (AM), if a handover environment is abnormal, both a Hybrid Automatic Repeat Request (HARQ) technology and an Automatic Repeat Request (ARQ) technology in the related art cannot ensure that a source base station and a terminal can accurately learn a state of an opposite terminal receiving a data packet before a base station is handed over. Therefore, during the handover of the base station, the source base station needs to forward a large number of duplicate unacknowledged packets to the destination base station. In addition, when the handover is successful in the base station, the repeated Data packets may be repeatedly transmitted over the air interface due to the untimely feedback of the Packet Data Convergence Protocol (PDCP) status report, which may cause unnecessary time delay.
Therefore, how to avoid the transmission of duplicate packets in the handover process of the base station is still a problem to be solved by those skilled in the art.
Disclosure of Invention
The embodiment of the invention provides a control method in a base station switching process and a base station, which are used for solving the problem of time delay increase caused by repeated data packet transmission in the existing base station switching process.
In a first aspect, an embodiment of the present invention provides a method for controlling a base station in a handover process, where the method includes:
judging whether any terminal meets the triggering condition of the high-frequency state report;
if yes, executing a high-frequency state reporting process;
the high frequency status reporting procedure comprises:
if the downlink AM data for any terminal exists, the downlink AM data is sent after a P domain is configured in the downlink AM data so as to request a state report corresponding to the downlink AM data from any terminal;
and if receiving the uplink AM data sent by any terminal, feeding back a status report corresponding to the uplink AM data to any terminal.
Preferably, if the condition is satisfied, the high frequency status reporting process is executed, further comprising:
if yes, starting a timer;
and if the timing duration of the timer is greater than a preset duration threshold, terminating the execution of the high-frequency state report process.
Preferably, the determining whether any terminal satisfies the high frequency status report triggering condition specifically includes:
receiving a measurement report reported by any terminal, and acquiring a source base station RSRP and a target base station RSRP in the measurement report;
and if the difference value of the RSRP of the source base station and the RSRP of the target base station is smaller than a preset threshold value, determining that any terminal meets the triggering condition of the high-frequency status report.
Preferably, if there is downlink AM data for the any terminal, the sending the downlink AM data after configuring a P domain in the downlink AM data to request a status report corresponding to the downlink AM data from the any terminal, and then further including:
and if a status report corresponding to the downlink AM data returned by any terminal is received, determining that the downlink AM data is received by any terminal.
In a second aspect, an embodiment of the present invention provides a base station, including:
the triggering unit is used for judging whether any terminal meets the triggering condition of the high-frequency state report;
the execution unit is used for executing the high-frequency state reporting process if the condition is met;
the execution unit includes:
a downlink sending unit, configured to send downlink AM data after configuring a P domain in the downlink AM data if the downlink AM data exists for the any terminal, so as to request a status report corresponding to the downlink AM data from the any terminal;
and an uplink receiving unit, configured to feed back a status report corresponding to the uplink AM data to any terminal if the uplink AM data sent by the any terminal is received.
Preferably, the execution unit further includes:
the timer starting unit is used for starting the timer if the timer is met;
and the timer termination unit is used for terminating the execution of the high-frequency state report process if the timing duration of the timer is greater than a preset duration threshold.
Preferably, the triggering unit specifically includes:
the RSRP acquisition unit is used for receiving a measurement report reported by any terminal and acquiring a source base station RSRP and a target base station RSRP in the measurement report;
and the threshold judging unit is used for determining that any terminal meets the triggering condition of the high-frequency state report if the difference value of the RSRP of the source base station and the RSRP of the target base station is smaller than a preset threshold value.
Preferably, the execution unit further includes:
and a confirmation receiving unit, configured to determine that the downlink AM data has been received by any terminal if a status report corresponding to the downlink AM data returned by the any terminal is received.
In a third aspect, an embodiment of the present invention provides an electronic device, including a processor, a communication interface, a memory, and a bus, where the processor and the communication interface, the memory complete communication with each other through the bus, and the processor may call a logic instruction in the memory to perform the steps of the method provided in the first aspect.
In a fourth aspect, an embodiment of the present invention provides a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of the method as provided in the first aspect.
According to the control method in the base station switching process provided by the embodiment of the invention, the P domain is configured in the downlink AM data, and the state report is fed back after the uplink AM data is received, so that the receiving state of each downlink AM data and each uplink AM data in the base station switching process can be timely known by the opposite terminal, the repeated transmission of the AM data received by the opposite terminal is avoided, and the time delay 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 schematic flowchart of a control method in a base station handover process according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a control method in a base station handover process according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 4 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.
In the base station switching process, a large number of repeated data packet transmissions exist, resulting in an increase in time delay. To solve the problem, the embodiment of the present invention provides a control method in a base station handover process. Fig. 1 is a schematic flowchart of a control method in a base station handover process according to an embodiment of the present invention, and as shown in fig. 1, an execution subject of the method is a source base station, and the method includes:
Specifically, the high frequency status report triggering condition is a condition that is set in advance and needs to be satisfied for executing the high frequency status report flow. The high frequency status report process occurs before any terminal may need to perform base station handover, and whether any terminal meets the high frequency status report trigger condition correspondingly is determined by the source base station whether the terminal may need to perform base station handover. If the determination result is satisfied, step 120 is performed.
And step 120, if yes, executing a high-frequency state reporting process. Wherein, the high-frequency status report process comprises:
step 121, if there is downlink AM data for the terminal, the downlink AM data is configured with a P field and then sent to request a status report corresponding to the downlink AM data from the terminal.
Specifically, when any terminal satisfies the high frequency status report triggering condition, if there is downlink AM data for the terminal, that is, downlink data in an acknowledgment response mode that needs to be sent to the terminal, it is necessary to configure a P field in the downlink AM data before sending the downlink AM data. Here, the P field is configured in the RLC layer of the source base station, and the configuration of the P field is used to request the data receiving end to return a status report of the data receiving end immediately after receiving data. Here, the status report may be NACK/ACK.
And step 122, if receiving the uplink AM data sent by the terminal, feeding back a status report corresponding to the uplink AM data to the terminal.
Specifically, when any terminal meets the high-frequency status report triggering condition, if uplink AM data sent by the terminal is received, a status report corresponding to the uplink AM data is immediately fed back to the terminal. Similarly, the status report here may be NACK/ACK.
It should be noted that, both step 121 and step 122 are executed when any terminal satisfies the high frequency status report condition, and step 121 is executed under the trigger that there is downlink AM data for the terminal, and step 122 is executed under the trigger that uplink AM data sent by the terminal is received.
According to the method provided by the embodiment of the invention, the P domain is configured in the downlink AM data, and the status report is returned after the uplink AM data is received, so that the receiving status of each downlink AM data and each uplink AM data in the switching process of the base station can be timely known by the opposite terminal, the repeated transmission of the AM data received by the opposite terminal is avoided, and the time delay is reduced.
Based on the above embodiment, in the method, step 120 further includes: if yes, starting a timer; and if the timing duration of the timer is greater than the preset duration threshold, terminating the execution of the high-frequency state report process.
Specifically, when it is detected that any terminal satisfies the high frequency status report triggering condition, that is, a timer is started, the timing duration of the timer represents the duration that has been consumed for executing the high frequency status report process for the terminal. The preset time length threshold is the preset maximum time length for reporting the receiving state of the uplink and downlink AM data, and if the timing time length exceeds the preset time length threshold and the terminal has not completed the base station switching, step 121 and step 122 are not executed any more, and no P domain is configured for the downlink AM data of the terminal, that is, the terminal is not requested to return a state report corresponding to the downlink AM data, and no state report corresponding to the uplink AM data sent by the terminal is returned, so as to save the overhead.
Based on any of the above embodiments, in the method, step 110 specifically includes: receiving a measurement report reported by any terminal, and acquiring a source base station RSRP and a target base station RSRP in the measurement report; and if the difference value of the RSRP of the source base station and the RSRP of the target base station is smaller than a preset threshold value, determining that the terminal meets the triggering condition of the high-frequency state report.
Specifically, when any terminal needs to perform base station handover, a measurement report is reported to the base station, where the measurement report at least includes Reference Signal Receiving Power (RSRP) of the source base station and RSRP of the destination base station. Here, the measurement report may be an a3 event.
After the measurement report is obtained, the source base station RSRP and the target base station RSRP are extracted from the measurement report, the difference value of the source base station RSRP and the target base station RSRP is calculated, and the difference value is compared with a preset threshold value. Here, the preset threshold is a preset threshold for determining whether the system needs to perform RSRP difference of high frequency state feedback. If the difference is smaller than the preset threshold value, the source base station determines that the terminal starts to enter a high-frequency state feedback process, and executes step 120; otherwise, step 120 is not performed.
Based on any of the above embodiments, the method further includes, after step 121: and if a status report corresponding to the downlink AM data returned by the terminal is received, determining that the downlink AM data is received by the terminal.
Specifically, in the process of executing the high-frequency status report process, after sending the downlink AM data configured with the P domain to the terminal, if the terminal receives the downlink AM data, the terminal feeds back a status report corresponding to the downlink AM data to the base station. If the base station receives the status report corresponding to the downlink AM data, it can be determined that the terminal has received the downlink AM data.
Based on any of the above embodiments, fig. 2 is a schematic flowchart of a control method in a base station handover process according to another embodiment of the present invention, as shown in fig. 2, in which a base station, i.e., a source base station, includes:
In step 220, in the source base station, the L3 layer determines whether the difference between the RSRP of the source base station and the RSRP of the destination base station is smaller than a preset switching Threshold according to the measurement report reported by the A3 event, and executes step 230 when the difference between the RSRP of the source base station and the RSRP of the destination base station is smaller than the preset switching Threshold.
In step 230, in the source base station, the L3 layer issues a high frequency status report indication for the UE to the RLC layer in the L2 layer, and starts a Timer.
In step 240, in the source bs, the L2 layer receives the high frequency status report instruction from the L3 layer.
In step 280, in the source base station, the L2 layer receives the high frequency status report cancellation indication for the UE, and terminates the high frequency status report procedure.
According to the method provided by the embodiment of the invention, the P domain is configured in the downlink AM data, and the state report is fed back after the uplink AM data is received, so that the receiving state of each downlink AM data and each uplink AM data in the switching process of the base station can be timely known by the opposite terminal, the repeated transmission of the AM data received by the opposite terminal is avoided, and the time delay is reduced. In addition, by setting the high-frequency status report exit mechanism in steps 280 and 290, certain scenarios that satisfy the preset handover Threshold but do not have a handover for a long time are prevented, so as to save the overhead.
Based on any of the above embodiments, fig. 3 is a schematic structural diagram of a base station according to an embodiment of the present invention, as shown in fig. 3, the base station includes a triggering unit 310 and an executing unit 320;
the triggering unit 310 is configured to determine whether any terminal meets a high-frequency status report triggering condition;
the execution unit 320 is configured to execute the high frequency status report procedure if the request is satisfied;
the execution unit 320 includes a downlink transmission unit 321 and an uplink receiving unit 322;
the downlink sending unit 321 is configured to, if there is downlink AM data for the any terminal, send the downlink AM data after configuring a P domain in the downlink AM data, so as to request a status report corresponding to the downlink AM data from the any terminal;
the uplink receiving unit 322 is configured to, if uplink AM data sent by any terminal is received, feed back a status report corresponding to the uplink AM data to the any terminal.
According to the base station provided by the embodiment of the invention, the P domain is configured in the downlink AM data, and the status report is returned after the uplink AM data is received, so that the receiving status of each downlink AM data and each uplink AM data in the switching process of the base station can be timely known by the opposite terminal, the repeated transmission of the AM data received by the opposite terminal is avoided, and the time delay is reduced.
Based on any of the above embodiments, the executing unit 320 further includes:
the timer starting unit is used for starting the timer if the timer is met;
and the timer termination unit is used for terminating the execution of the high-frequency state report process if the timing duration of the timer is greater than a preset duration threshold.
Based on any of the above embodiments, the triggering unit 310 specifically includes:
the RSRP acquisition unit is used for receiving a measurement report reported by any terminal and acquiring a source base station RSRP and a target base station RSRP in the measurement report;
and the threshold judging unit is used for determining that any terminal meets the triggering condition of the high-frequency state report if the difference value of the RSRP of the source base station and the RSRP of the target base station is smaller than a preset threshold value.
Based on any of the above embodiments, the executing unit 320 further includes:
and a confirmation receiving unit, configured to determine that the downlink AM data has been received by any terminal if a status report corresponding to the downlink AM data returned by the any terminal is received.
Fig. 4 is a schematic entity structure diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 4, the electronic device may include: a processor (processor)401, a communication Interface (communication Interface)402, a memory (memory)403 and a communication bus 404, wherein the processor 401, the communication Interface 402 and the memory 403 complete communication with each other through the communication bus 404. The processor 401 may call a computer program stored in the memory 403 and executable on the processor 401 to execute the control method in the handover procedure of the base station provided by the foregoing embodiments, for example, the method includes: judging whether any terminal meets the triggering condition of the high-frequency state report; if yes, executing a high-frequency state reporting process; the high frequency status reporting procedure comprises: if the downlink AM data for any terminal exists, the downlink AM data is sent after a P domain is configured in the downlink AM data so as to request a state report corresponding to the downlink AM data from any terminal; and if receiving the uplink AM data sent by any terminal, feeding back a status report corresponding to the uplink AM data to any terminal.
In addition, the logic instructions in the memory 403 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or make a contribution to the prior art, or may be implemented in the form of a software product stored in a storage medium and including 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 methods described in 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.
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 is implemented by a processor to execute the control method in the base station handover process provided in the foregoing embodiments, for example, the method includes: judging whether any terminal meets the triggering condition of the high-frequency state report; if yes, executing a high-frequency state reporting process; the high frequency status reporting procedure comprises: if the downlink AM data for any terminal exists, the downlink AM data is sent after a P domain is configured in the downlink AM data so as to request a state report corresponding to the downlink AM data from any terminal; and if receiving the uplink AM data sent by any terminal, feeding back a status report corresponding to the uplink AM data to any terminal.
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 (10)
1. A control method in a base station switching process is characterized by comprising the following steps:
judging whether any terminal meets the triggering condition of the high-frequency state report;
if yes, executing a high-frequency state reporting process;
the high frequency status reporting procedure comprises:
if the downlink Acknowledge Mode (AM) data for any terminal exists, the downlink AM data is sent after a P domain is configured in the downlink AM data so as to request a status report corresponding to the downlink AM data from any terminal;
and if receiving the uplink AM data sent by any terminal, feeding back a status report corresponding to the uplink AM data to any terminal.
2. The method as claimed in claim 1, wherein if the condition is satisfied, executing a high frequency status report procedure, further comprises:
if yes, starting a timer;
and if the timing duration of the timer is greater than a preset duration threshold, terminating the execution of the high-frequency state report process.
3. The method according to claim 1, wherein the determining whether any terminal satisfies the high frequency status report trigger condition specifically includes:
receiving a measurement report reported by any terminal, and acquiring Reference Signal Received Power (RSRP) of a source base station and RSRP of a target base station in the measurement report;
and if the difference value of the RSRP of the source base station and the RSRP of the target base station is smaller than a preset threshold value, determining that any terminal meets the triggering condition of the high-frequency status report.
4. The method according to claim 1, wherein if there is downlink AM data for the any terminal, the method further includes, after configuring a P domain in the downlink AM data, sending the downlink AM data to request a status report corresponding to the downlink AM data from the any terminal, and then:
and if a status report corresponding to the downlink AM data returned by any terminal is received, determining that the downlink AM data is received by any terminal.
5. A base station, comprising:
the triggering unit is used for judging whether any terminal meets the triggering condition of the high-frequency state report;
the execution unit is used for executing the high-frequency state reporting process if the condition is met;
the execution unit includes:
a downlink sending unit, configured to send downlink AM data after configuring a P domain in the downlink AM data if there is downlink acknowledged mode AM data for the any terminal, so as to request a status report corresponding to the downlink AM data from the any terminal;
and an uplink receiving unit, configured to feed back a status report corresponding to the uplink AM data to any terminal if the uplink AM data sent by the any terminal is received.
6. The base station of claim 5, wherein the execution unit further comprises:
the timer starting unit is used for starting the timer if the timer is met;
and the timer termination unit is used for terminating the execution of the high-frequency state report process if the timing duration of the timer is greater than a preset duration threshold.
7. The base station of claim 5, wherein the triggering unit specifically comprises:
the RSRP acquisition unit is used for receiving a measurement report reported by any terminal and acquiring a Reference Signal Received Power (RSRP) of a source base station and a RSRP of a target base station in the measurement report;
and the threshold judging unit is used for determining that any terminal meets the triggering condition of the high-frequency state report if the difference value of the RSRP of the source base station and the RSRP of the target base station is smaller than a preset threshold value.
8. The base station of claim 5, wherein the execution unit further comprises:
and a confirmation receiving unit, configured to determine that the downlink AM data has been received by any terminal if a status report corresponding to the downlink AM data returned by the any terminal is received.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the control method in the handover procedure of a base station according to any of claims 1 to 4 when executing the program.
10. A non-transitory computer readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the control method in a base station handover procedure according to any one of claims 1 to 4.
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| CN102611542A (en) * | 2012-03-16 | 2012-07-25 | 中国联合网络通信集团有限公司 | Data retransmission method and data retransmission device |
| CN107277879A (en) * | 2016-04-01 | 2017-10-20 | 北京三星通信技术研究有限公司 | A kind of method and base station equipment for supporting seamless switching |
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| KR101387475B1 (en) * | 2006-03-22 | 2014-04-22 | 엘지전자 주식회사 | method of processing data in mobile communication system having a plurality of network entities |
| CN101047967B (en) * | 2006-03-30 | 2010-12-01 | 华为技术有限公司 | Method and device for processing data at switchover procedure |
| JP5231550B2 (en) * | 2007-08-13 | 2013-07-10 | エルジー エレクトロニクス インコーポレイティド | Method for transmitting VoIP packets |
| CN101415219A (en) * | 2007-10-19 | 2009-04-22 | 华为技术有限公司 | Method, system and apparatus for processing data |
| CN101651971B (en) * | 2009-09-15 | 2012-05-09 | 新邮通信设备有限公司 | Downlink switching method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102611542A (en) * | 2012-03-16 | 2012-07-25 | 中国联合网络通信集团有限公司 | Data retransmission method and data retransmission device |
| CN107277879A (en) * | 2016-04-01 | 2017-10-20 | 北京三星通信技术研究有限公司 | A kind of method and base station equipment for supporting seamless switching |
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