CN104185203A - Method and device for detecting ping-pong switching - Google Patents
Method and device for detecting ping-pong switching Download PDFInfo
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Abstract
The invention discloses a method for detecting ping-pong switching. A base station acquires switching information in switching of a terminal, when residence time of the terminal in a source cell is determined to be less than a preset time threshold in the switching information, when a difference between a reference signal receiving power (RSRP) value of the source cell and an RSRP value of a target cell is further determined to be smaller than a signal delay quantity in the switching information, and/or, when the difference between the reference signal receiving quality (RSRQ) value of the source cell and an RSRQ value of the target cell is determined to be smaller than the signal delay quantity in the switching information, or when an absolute value of a difference between a switching threshold value of the target cell and a switching threshold value of the source cell is further determined to be smaller than a preset switching threshold in the switching information, switching of the terminal is determined to be ping-pong switching. The invention also discloses a device for detecting ping-pong switching, can realize automatic detection of ping-pong switching without being easily influenced by external factors, and is high in accuracy rate of detection.
Description
Technical field
The present invention relates to the handoff technique of communicating by letter, be specifically related to a kind of method and apparatus that detects pingpang handoff.
Background technology
In mobile communication system, by certain area due to two base station signal strength acute variation, the phenomenon that terminal is switched back and forth between two base stations is called pingpang handoff.Pingpang handoff has produced ping-pong, makes terminal signaling intensity step-down, has a strong impact on the normal talking of communicating pair.
At present, Long Term Evolution (LTE, Long Term Evolution) the pingpang handoff detection technique of network becomes researcher's important topic.In LTE network, when base station sends handover request to adjacent base station, transmitting terminal historical information is to described adjacent base station, wherein, described terminal history information comprise terminal the cell identification number (ID of resident mistake, IDentity), cell type and residence time, when the residence time of described terminal two base stations is all less than sometime threshold value, can determine that pingpang handoff has occurred described terminal.
Although can automatically detect pingpang handoff in prior art, only rely on above-mentioned time threshold to belong to single as decision condition is real; Moreover the value of described time threshold and numerous extraneous factor are closely bound up, as moving velocity of terminal, moving direction, network design etc., the optimization difficulty to described time threshold in practical application is high; Once it is incorrect that described time threshold is chosen, will have a strong impact on normal communications.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and apparatus that detects pingpang handoff, realizes the accuracy that simply, is not subject to extraneous factor impact, automatically detects high.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of method that detects pingpang handoff, described method comprises:
Handover information when base station obtains terminal switching, determines when the residence time of terminal described in described handover information in cell-of-origin is less than default time threshold,
In further definite described handover information, the difference of the Reference Signal Received Power RSRP value of cell-of-origin and the RSRP value of Target cell is less than described signal hysteresis amount, and/or, when the difference of the Reference Signal Received Quality RSRQ value of cell-of-origin and the RSRQ value of Target cell is less than described signal hysteresis amount in described handover information, determine the pingpang handoff that switches to of described terminal;
Or the absolute value of further determining the difference of the handoff threshold value of Target cell and the handoff threshold value of cell-of-origin in described handover information is while being less than default switching threshold, determines the pingpang handoff that switches to of described terminal.
In such scheme, described handover information comprises: terminal is at least one of the residence time of cell-of-origin, the RSRP value of cell-of-origin and RSRQ value, at least one and/or the handoff threshold value of cell-of-origin and the handoff threshold value of Target cell of the RSRP value of Target cell and RSRQ value.
In such scheme, handover information when described base station obtains terminal switching, comprising:
Cell-of-origin sends the handover request message that carries handover information to Target cell, described Target cell obtains described handover information by described handover request message;
Or described terminal is sent to described base station by described handover information.
In such scheme, when described in described definite described handover information, the residence time of terminal in cell-of-origin is less than default time threshold, in further definite described handover information, the difference of the Reference Signal Received Power RSRP value of cell-of-origin and the RSRP value of Target cell is less than described signal hysteresis amount, and/or, when in described handover information, the difference of the Reference Signal Received Quality RSRQ value of cell-of-origin and the RSRQ value of Target cell is less than described signal hysteresis amount; Or the absolute value of further determining the difference of the handoff threshold value of Target cell and the handoff threshold value of cell-of-origin in described handover information is while being less than default switching threshold, determines that the pingpang handoff that switches to of described terminal comprises:
Determine that the residence time of described terminal in described cell-of-origin is less than the time threshold setting in advance, and the difference of the RSRP value of described cell-of-origin and the RSRP value of described Target cell is while being less than the signal hysteresis amount setting in advance, and determines the pingpang handoff that switches to of described terminal;
Or, determine that the residence time of described terminal in described cell-of-origin is less than described time threshold, and the difference of the RSRQ value of described cell-of-origin and the RSRQ value of described Target cell is while being less than described signal hysteresis amount, determines the pingpang handoff that switches to of described terminal;
Or, determine that the residence time of described terminal in described cell-of-origin is less than described time threshold, and the difference of the RSRQ value of the RSRP value of described cell-of-origin and the difference of the RSRP value of Target cell and the RSRQ value of described cell-of-origin and Target cell is while being all less than described signal hysteresis amount, determines the pingpang handoff that switches to of described terminal;
Or, determine that the residence time of described terminal in described cell-of-origin is less than described time threshold, and the absolute value of the difference of the handoff threshold value of Target cell and the handoff threshold value of cell-of-origin is while being less than the switching threshold setting in advance, and determines the pingpang handoff that switches to of described terminal.
In such scheme, before terminal is switched, described method also comprises:
Described terminal is added up described terminal in RSRP value and/or the RSRQ value of the residence time of cell-of-origin, the RSRP value of measuring cell-of-origin and/or RSRQ value, Target cell, and/or obtains the handoff threshold value of cell-of-origin and the handoff threshold value of Target cell.
The present invention also provides a kind of device that detects pingpang handoff, and described device comprises: acquiring unit and determining unit; Wherein,
Described acquiring unit, the handover information while switching for obtaining terminal;
Described determining unit, while being less than default time threshold for the residence time of terminal in cell-of-origin described in definite described handover information, in further definite described handover information, the difference of the Reference Signal Received Power RSRP value of cell-of-origin and the RSRP value of Target cell is less than described signal hysteresis amount, and/or, when the difference of the Reference Signal Received Quality RSRQ value of cell-of-origin and the RSRQ value of Target cell is less than described signal hysteresis amount in described handover information, determine the pingpang handoff that switches to of described terminal; Or the absolute value of further determining the difference of the handoff threshold value of Target cell and the handoff threshold value of cell-of-origin in described handover information is while being less than default switching threshold, determines the pingpang handoff that switches to of described terminal.
In such scheme, described handover information comprises: terminal at the residence time of cell-of-origin, at least one of the RSRP value of at least one of the Reference Signal Received Power RSRP value of cell-of-origin and Reference Signal Received Quality RSRQ value, Target cell and RSRQ value and/or the handoff threshold value of cell-of-origin and the handoff threshold value of Target cell.
In such scheme, described acquiring unit, is further used for cell-of-origin and to Target cell, sends the handover request message that carries handover information, by described handover request message, obtains described handover information;
Or, the handover information that receiving terminal sends.
In such scheme, described determining unit, be further used for determining that the residence time of described terminal in described cell-of-origin is less than the time threshold setting in advance, and the difference of the RSRP value of described cell-of-origin and the RSRP value of described Target cell is while being less than the signal hysteresis amount setting in advance, and determines the pingpang handoff that switches to of described terminal;
Or, described determining unit determines that the residence time of described terminal in described cell-of-origin is less than described time threshold, and the difference of the RSRQ value of described cell-of-origin and the RSRQ value of described Target cell is while being less than described signal hysteresis amount, determines the pingpang handoff that switches to of described terminal;
Or, described determining unit determines that the residence time of described terminal in described cell-of-origin is less than described time threshold, and the difference of the RSRQ value of the RSRP value of described cell-of-origin and the difference of the RSRP value of Target cell and the RSRQ value of described cell-of-origin and Target cell is while being all less than described signal hysteresis amount, determines the pingpang handoff that switches to of described terminal;
Or, described determining unit determines that the residence time of described terminal in described cell-of-origin is less than described time threshold, and when the absolute value of the difference of the handoff threshold value of Target cell and the handoff threshold value of cell-of-origin is less than the switching threshold setting in advance, determine the pingpang handoff that switches to of described terminal.
In such scheme, described device also comprises statistical measurement unit;
Described statistical measurement unit, for adding up described terminal in RSRP value and/or the RSRQ value of the residence time of cell-of-origin, the RSRP value of measuring cell-of-origin and/or RSRQ value, Target cell, and/or obtain the handoff threshold value of cell-of-origin and the handoff threshold value of Target cell.
A kind of method and apparatus that detects pingpang handoff provided by the invention, handover information while obtaining terminal switching, determine when the residence time of terminal described in described handover information in cell-of-origin is less than default time threshold, in further definite described handover information, the difference of the RSRP value of cell-of-origin and the RSRP value of Target cell is less than described signal hysteresis amount, and/or the difference of the RSRQ value of cell-of-origin and the RSRQ value of Target cell is less than described signal hysteresis amount in described handover information; Or the absolute value of further determining the difference of the handoff threshold value of Target cell and the handoff threshold value of cell-of-origin in described handover information is while being less than default switching threshold, determines the pingpang handoff that switches to of described terminal.For reducing the impact of extraneous factor, the present invention adopts more complicated pingpang handoff condition, and the pingpang handoff that can realize high accuracy detects.
Accompanying drawing explanation
Fig. 1 is the method flow schematic diagram that the present invention detects pingpang handoff;
Fig. 2 is the specific embodiment schematic diagram of the present invention's method of detecting pingpang handoff;
Fig. 3 is the installation composition structural representation that the present invention detects pingpang handoff.
Embodiment
The invention provides a kind of method that detects pingpang handoff, as shown in Figure 1, described method comprises:
Step 11: handover information when base station obtains terminal switching;
Here, described handover information comprises: terminal is at the residence time of cell-of-origin, the Reference Signal Received Power (RSRP of cell-of-origin, Reference Signal Receiving Power) value and Reference Signal Received Quality (RSRQ, Reference Signal Receiving Quality) be worth at least one, at least one and/or the handoff threshold value of cell-of-origin and the handoff threshold value of Target cell of the RSRP value of Target cell and RSRQ value.
Handover information when described base station obtains terminal switching sends the handover request message that carries handover information to Target cell by cell-of-origin, described Target cell obtains described handover information by described handover request message; Or described terminal is sent to handover information the modes such as described base station.
Step 12: determine when the residence time of terminal described in described handover information in cell-of-origin is less than default time threshold, in further definite described handover information, the difference of the RSRP value of cell-of-origin and the RSRP value of Target cell is less than described signal hysteresis amount, and/or, when the difference of the RSRQ value of cell-of-origin and the RSRQ value of Target cell is less than described signal hysteresis amount in described handover information, determine the pingpang handoff that switches to of described terminal; Or the absolute value of further determining the difference of the handoff threshold value of Target cell and the handoff threshold value of cell-of-origin in described handover information is while being less than default switching threshold, determines the pingpang handoff that switches to of described terminal.
Fig. 2 is specific embodiment of the invention schematic diagram, and in conjunction with Fig. 2, cell-of-origin sends the handover request message that carries handover information to Target cell, and described Target cell obtains described handover information by described handover request message; Described Target cell is determined when the residence time of described terminal in described cell-of-origin is less than described time threshold, when the difference of the RSRP value of cell-of-origin and the RSRP value of described Target cell is less than described signal hysteresis amount described in further definite described handover information, determine the pingpang handoff that switches to of described terminal.
Fig. 2 determines that with described Target cell the residence time of described terminal in described cell-of-origin is less than described time threshold, and it is the explanation that example is carried out that the difference of further determining the RSRP value of cell-of-origin described in described handover information and the RSRP value of described Target cell is less than described signal hysteresis amount; In addition, when determining that described in handover information, the residence time of terminal in described cell-of-origin is less than described time threshold, when the difference of the RSRQ value of cell-of-origin and the RSRQ value of Target cell is less than described signal hysteresis amount described in further definite handover information, also can determine the pingpang handoff that switches to of described terminal;
Or, when determining that described in handover information, the residence time of terminal in described cell-of-origin is less than described time threshold, when the difference of the RSRQ value of the RSRP value of cell-of-origin and the difference of the RSRP value of Target cell and the RSRQ value of described cell-of-origin and Target cell is all less than described signal hysteresis amount described in further definite described handover information, determine the pingpang handoff that switches to of described terminal;
Or, determine that the residence time of described terminal in described cell-of-origin is less than described time threshold, and the absolute value of the difference of the handoff threshold value of Target cell and the handoff threshold value of cell-of-origin is while being less than the switching threshold setting in advance, and determines the pingpang handoff that switches to of described terminal.
Wherein, described signal hysteresis amount, switching threshold and time threshold are what set in advance, can modify according to the practical situations of network.
Before terminal is switched, RSRP and/or the RSRQ in the residence time of cell-of-origin, the RSRP that measures cell-of-origin and/or RSRQ, Target cell adds up to described terminal also to need described terminal; And/or the handoff threshold value of the handoff threshold value of cell-of-origin and Target cell is obtained.
Described step 12 is less than the situation of described time threshold for determining the residence time of described cell-of-origin, determines when the residence time of terminal described in described handover information in described cell-of-origin is greater than the time threshold of described setting, described in determining, switches to normal switching.
The present invention also provides a kind of device that detects pingpang handoff, and as shown in Figure 3, described device comprises: acquiring unit 22 and determining unit 23;
Described acquiring unit 22, the handover information while switching for obtaining terminal;
Described determining unit 23, while being less than default time threshold for the residence time of terminal in cell-of-origin described in definite described handover information, in further definite described handover information, the difference of the RSRP value of cell-of-origin and the RSRP value of Target cell is less than described signal hysteresis amount, and/or, when the difference of the RSRQ value of cell-of-origin and the RSRQ value of Target cell is less than described signal hysteresis amount in described handover information, determine the pingpang handoff that switches to of described terminal;
Or the absolute value of further determining the difference of the handoff threshold value of Target cell and the handoff threshold value of cell-of-origin in described handover information is while being less than default switching threshold, determines the pingpang handoff that switches to of described terminal.
Further, described acquiring unit 22 obtains described handover information and comprises: in cell-of-origin, to Target cell, send while carrying the handover request message of handover information, by described handover request message, obtain described handover information; Or, the handover information that receiving terminal sends.
Concrete, in cell-of-origin, to Target cell, send while carrying the handover request message of handover information, described acquiring unit 22 gets described handover information, described determining unit 23 determines that the residence time of described terminal in described cell-of-origin is less than the time threshold setting in advance, when the difference of further definite RSRP value of described cell-of-origin and the RSRP value of described Target cell is less than the signal hysteresis amount setting in advance, determine the pingpang handoff that switches to of described terminal.
When described determining unit 23, determine the residence time of described terminal in described cell-of-origin and be less than described time threshold, when the difference of further definite RSRQ value of described cell-of-origin and the RSRQ value of described Target cell is less than described signal hysteresis amount, determine the pingpang handoff that switches to of described terminal;
When described determining unit 23, determine the residence time of described terminal in described cell-of-origin and be less than described time threshold, when the difference of the RSRQ value of further definite RSRP value of described cell-of-origin and the difference of the RSRP value of Target cell and the RSRQ value of described cell-of-origin and Target cell is all less than described signal hysteresis amount, determine the pingpang handoff that switches to of described terminal;
When described determining unit 23, determine the residence time of described terminal in described cell-of-origin and be less than described time threshold, and the absolute value of the difference of the handoff threshold value of Target cell and the handoff threshold value of cell-of-origin is while being less than the switching threshold setting in advance, and determines the pingpang handoff that switches to of described terminal.
Wherein, described signal hysteresis amount, switching threshold, time threshold are the value setting in advance, and can modify according to the practical situations of network.
Further, described device also comprises statistical measurement unit 21; For ease of realizing the function of described acquiring unit 22, determining unit 23, described statistical measurement unit 21, for adding up described terminal in RSRP value and/or the RSRQ value of the residence time of cell-of-origin, the RSRP value of measuring cell-of-origin and/or RSRQ value, Target cell, and/or obtain the handoff threshold value of cell-of-origin and the handoff threshold value of Target cell.
The method and apparatus of detection pingpang handoff provided by the invention, handover information when base station obtains terminal switching, determine that terminal is less than time threshold at the residence time of cell-of-origin, in further definite described handover information, the difference of the RSRP value of cell-of-origin and the RSRP value of Target cell is less than described signal hysteresis amount, and/or, when the difference of the RSRQ value of cell-of-origin and the RSRQ value of Target cell is less than described signal hysteresis amount in described handover information, determine the pingpang handoff that switches to of described terminal; Or the absolute value of further determining the difference of the handoff threshold value of Target cell and the handoff threshold value of cell-of-origin in described handover information is while being less than default switching threshold, determines the pingpang handoff that switches to of described terminal.Utilize the present invention, be not subject to extraneous factor impact, can realize the automatic detection of pingpang handoff, the decision condition of pingpang handoff is not single, accuracy in detection is high.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (10)
1. a method that detects pingpang handoff, is characterized in that, described method comprises:
Handover information when base station obtains terminal switching, determines when the residence time of terminal described in described handover information in cell-of-origin is less than default time threshold,
In further definite described handover information, the difference of the Reference Signal Received Power RSRP value of cell-of-origin and the RSRP value of Target cell is less than described signal hysteresis amount, and/or, when the difference of the Reference Signal Received Quality RSRQ value of cell-of-origin and the RSRQ value of Target cell is less than described signal hysteresis amount in described handover information, determine the pingpang handoff that switches to of described terminal;
Or the absolute value of further determining the difference of the handoff threshold value of Target cell and the handoff threshold value of cell-of-origin in described handover information is while being less than default switching threshold, determines the pingpang handoff that switches to of described terminal.
2. the method for detection pingpang handoff according to claim 1, it is characterized in that, described handover information comprises: terminal is at least one of the residence time of cell-of-origin, the RSRP value of cell-of-origin and RSRQ value, at least one and/or the handoff threshold value of cell-of-origin and the handoff threshold value of Target cell of the RSRP value of Target cell and RSRQ value.
3. the method for detection pingpang handoff according to claim 1 and 2, is characterized in that, handover information when described base station obtains terminal switching, comprising:
Cell-of-origin sends the handover request message that carries handover information to Target cell, described Target cell obtains described handover information by described handover request message;
Or described terminal is sent to described base station by described handover information.
4. the method for detection pingpang handoff according to claim 1, it is characterized in that, when described in described definite described handover information, the residence time of terminal in cell-of-origin is less than default time threshold, in further definite described handover information, the difference of the Reference Signal Received Power RSRP value of cell-of-origin and the RSRP value of Target cell is less than described signal hysteresis amount, and/or, when in described handover information, the difference of the Reference Signal Received Quality RSRQ value of cell-of-origin and the RSRQ value of Target cell is less than described signal hysteresis amount; Or the absolute value of further determining the difference of the handoff threshold value of Target cell and the handoff threshold value of cell-of-origin in described handover information is while being less than default switching threshold, determines that the pingpang handoff that switches to of described terminal comprises:
Determine that the residence time of described terminal in described cell-of-origin is less than the time threshold setting in advance, and the difference of the RSRP value of described cell-of-origin and the RSRP value of described Target cell is while being less than the signal hysteresis amount setting in advance, and determines the pingpang handoff that switches to of described terminal;
Or, determine that the residence time of described terminal in described cell-of-origin is less than described time threshold, and the difference of the RSRQ value of described cell-of-origin and the RSRQ value of described Target cell is while being less than described signal hysteresis amount, determines the pingpang handoff that switches to of described terminal;
Or, determine that the residence time of described terminal in described cell-of-origin is less than described time threshold, and the difference of the RSRQ value of the RSRP value of described cell-of-origin and the difference of the RSRP value of Target cell and the RSRQ value of described cell-of-origin and Target cell is while being all less than described signal hysteresis amount, determines the pingpang handoff that switches to of described terminal;
Or, determine that the residence time of described terminal in described cell-of-origin is less than described time threshold, and the absolute value of the difference of the handoff threshold value of Target cell and the handoff threshold value of cell-of-origin is while being less than the switching threshold setting in advance, and determines the pingpang handoff that switches to of described terminal.
5. the method for detection pingpang handoff according to claim 1, is characterized in that, before terminal is switched, described method also comprises:
Described terminal is added up described terminal in RSRP value and/or the RSRQ value of the residence time of cell-of-origin, the RSRP value of measuring cell-of-origin and/or RSRQ value, Target cell, and/or obtains the handoff threshold value of cell-of-origin and the handoff threshold value of Target cell.
6. a device that detects pingpang handoff, is characterized in that, described device comprises: acquiring unit and determining unit; Wherein,
Described acquiring unit, the handover information while switching for obtaining terminal;
Described determining unit, while being less than default time threshold for the residence time of terminal in cell-of-origin described in definite described handover information, in further definite described handover information, the difference of the Reference Signal Received Power RSRP value of cell-of-origin and the RSRP value of Target cell is less than described signal hysteresis amount, and/or, when the difference of the Reference Signal Received Quality RSRQ value of cell-of-origin and the RSRQ value of Target cell is less than described signal hysteresis amount in described handover information, determine the pingpang handoff that switches to of described terminal; Or the absolute value of further determining the difference of the handoff threshold value of Target cell and the handoff threshold value of cell-of-origin in described handover information is while being less than default switching threshold, determines the pingpang handoff that switches to of described terminal.
7. the device of detection pingpang handoff according to claim 6, it is characterized in that, described handover information comprises: terminal at the residence time of cell-of-origin, at least one of the RSRP value of at least one of the Reference Signal Received Power RSRP value of cell-of-origin and Reference Signal Received Quality RSRQ value, Target cell and RSRQ value and/or the handoff threshold value of cell-of-origin and the handoff threshold value of Target cell.
8. the device of detection pingpang handoff according to claim 6, it is characterized in that, described acquiring unit, is further used for cell-of-origin and to Target cell, sends the handover request message that carries handover information, by described handover request message, obtains described handover information;
Or, the handover information that receiving terminal sends.
9. according to the device of the detection pingpang handoff described in claim 6 or 7, it is characterized in that, described determining unit, be further used for determining that the residence time of described terminal in described cell-of-origin is less than the time threshold setting in advance, and the difference of the RSRP value of described cell-of-origin and the RSRP value of described Target cell is while being less than the signal hysteresis amount setting in advance, and determines the pingpang handoff that switches to of described terminal;
Or, described determining unit determines that the residence time of described terminal in described cell-of-origin is less than described time threshold, and the difference of the RSRQ value of described cell-of-origin and the RSRQ value of described Target cell is while being less than described signal hysteresis amount, determines the pingpang handoff that switches to of described terminal;
Or, described determining unit determines that the residence time of described terminal in described cell-of-origin is less than described time threshold, and the difference of the RSRQ value of the RSRP value of described cell-of-origin and the difference of the RSRP value of Target cell and the RSRQ value of described cell-of-origin and Target cell is while being all less than described signal hysteresis amount, determines the pingpang handoff that switches to of described terminal;
Or, described determining unit determines that the residence time of described terminal in described cell-of-origin is less than described time threshold, and when the absolute value of the difference of the handoff threshold value of Target cell and the handoff threshold value of cell-of-origin is less than the switching threshold setting in advance, determine the pingpang handoff that switches to of described terminal.
10. the device of detection pingpang handoff according to claim 6, is characterized in that, described device also comprises statistical measurement unit;
Described statistical measurement unit, for adding up described terminal in RSRP value and/or the RSRQ value of the residence time of cell-of-origin, the RSRP value of measuring cell-of-origin and/or RSRQ value, Target cell, and/or obtain the handoff threshold value of cell-of-origin and the handoff threshold value of Target cell.
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| CN108668316A (en) * | 2017-03-31 | 2018-10-16 | 中国移动通信集团湖北有限公司 | cell switching control method and device |
| CN110809283A (en) * | 2018-08-06 | 2020-02-18 | 大唐移动通信设备有限公司 | Method and device for inhibiting ping-pong handover |
| CN111132246A (en) * | 2018-11-01 | 2020-05-08 | 中国电信股份有限公司 | Handover method, system, and computer-readable storage medium |
| CN116582904A (en) * | 2023-07-10 | 2023-08-11 | 北京小米移动软件有限公司 | Information processing method, electronic device, communication system, and readable storage medium |
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| CN116582904A (en) * | 2023-07-10 | 2023-08-11 | 北京小米移动软件有限公司 | Information processing method, electronic device, communication system, and readable storage medium |
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