CN110972120A - Low-power-consumption Bluetooth device multilink management method, system and device - Google Patents

Low-power-consumption Bluetooth device multilink management method, system and device Download PDF

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CN110972120A
CN110972120A CN201811144783.5A CN201811144783A CN110972120A CN 110972120 A CN110972120 A CN 110972120A CN 201811144783 A CN201811144783 A CN 201811144783A CN 110972120 A CN110972120 A CN 110972120A
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time sequence
link state
link
parameter
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CN110972120B (en
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胡斌
胡胜发
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Guangzhou Ankai Microelectronics Co ltd
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Anyka Guangzhou Microelectronics Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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Abstract

The invention discloses a multilink management method, a system and a device of low-power-consumption Bluetooth equipment, wherein the method comprises the following steps: after acquiring the current time sequence parameters of each link state of the low-power-consumption Bluetooth equipment, automatically carrying out dynamic optimization adjustment on the time sequence parameters of each link state according to a preset program so as to enable the probability of processing time conflict among the link states to meet the preset requirement; and setting parameters of each link state by adopting the adjusted time sequence parameters, so that each link state works according to the adjusted time sequence parameters. According to the invention, through automatic optimization and adjustment of the time sequence parameter parameters of each link state, conflicts on time sequences when the Bluetooth baseband processes various states and the various states are frequently switched are reduced, so that the low-power-consumption Bluetooth equipment can be in various link states at the same time, the processing performance of software is effectively improved, the utilization efficiency of the Bluetooth baseband is improved, and the method can be widely applied to the technical field of Bluetooth communication.

Description

Low-power-consumption Bluetooth device multilink management method, system and device
Technical Field
The invention relates to the technical field of Bluetooth communication, in particular to a method, a system and a device for managing multiple links of low-power Bluetooth equipment.
Background
With the continuous expansion of application requirements and use scenes, particularly the wide application in the fields of smart homes, shopping malls, beacons in industrial production management and the like, standard protocols are continuously evolving and developing, the latest 5.0 protocol version supports longer transmission distance, higher transmission rate and larger advertisement data transmission amount, and all the newly increased characteristics enable the application range and the field of BLE to have infinite imagination and expansion space. The Bluetooth technology is used as a decentralized piconet ad hoc network, and can quickly, simply and safely realize instant messaging and data interaction among devices.
The states of the link layer of the bluetooth low energy device include 5 states of standby, advertising, scanning, initiating and connecting, which may exist simultaneously, for example, one device may simultaneously maintain the scanning, advertising and connecting states, and may maintain a connection with a plurality of different BLE devices in the connecting state, such as the topology shown in fig. 8, where any two BLE devices may only be connected point-to-point, where Dev a represents a first BLE device, Dev B represents a second BLE device, and Dev C represents a third BLE device. Since the bluetooth device is an ad hoc network of time division and frequency division multiplexing, it is a key factor to solve the timing relationship between various states and to preferentially maintain the connection communication between the bluetooth devices. At present, no effective management method can solve the problem of time sequence conflict when various states and various states are frequently switched.
Disclosure of Invention
In order to solve the above technical problems, a first object of the present invention is to provide a management method for effectively solving the conflict of timing of a bluetooth low energy device in a multilink situation.
A second object of the present invention is to provide a management system for efficiently resolving the conflict of timing of a bluetooth low energy device in a multilink situation.
A third object of the present invention is to provide a management apparatus for effectively resolving the time sequence conflict of the bluetooth low energy device in the case of multilink.
The first technical scheme adopted by the invention is as follows:
a multilink management method of a low-power Bluetooth device comprises the following steps:
s1, after acquiring the current time sequence parameters of each link state of the low-power consumption Bluetooth device, automatically carrying out dynamic optimization adjustment on the time sequence parameters of each link state according to a preset program so as to enable the processing time conflict probability among each link state to meet the preset requirement;
and S2, setting parameters of each link state by adopting the adjusted time sequence parameters, so that each link state works according to the adjusted time sequence parameters.
Further, the step S1 includes the following steps:
s11, obtaining the current first time sequence parameter of each link state, and estimating to obtain a second time sequence parameter after training the first time sequence parameter according to a preset model;
s12, adjusting the time sequence of each link state according to the second time sequence parameter;
s13, calculating the time sequence conflict probability value of each link state by combining the second time sequence parameter and a preset expectation formula, judging whether the time sequence conflict probability value is smaller than a preset threshold value, and if so, executing a step S2; otherwise, the process continues to step S11.
Further, the preset expectation formula is specifically as follows:
Figure BDA0001816549470000021
wherein P represents the probability value of time sequence conflict, α represents a weight factor, the maximum value of α is 1, the minimum value is 0, N represents the statistical times in the statistical time period T, and P represents the statistical times in the statistical time period TiRepresenting the probability value of the time sequence conflict of each statistic in the statistic period.
Further, the step of obtaining the current first timing parameter of each link state in S11 specifically includes:
before adding a new link state, judging whether other link states exist at present, acquiring a third time sequence parameter of the existing link state when judging that the existing state exists, and estimating a fourth time sequence parameter of the new link state according to the third time sequence parameter;
and taking the third timing parameter and the fourth third timing parameter as the first timing parameter.
Further, the link state is divided into a high-priority link state and a low-priority link state in the preset model, when a new timing parameter is estimated and obtained, the timing parameter of the high-priority link state is used as a reference parameter and is kept unchanged, and the preset timing requirement is met by adjusting the timing parameter of the low-priority link state;
the timing requirements are specifically:
T11+KT13≠T21+LT23i.e. T23≠(|T11-T21|+KT13) L,/L, and
T22≤T13-T12；
wherein, T11An event start time representing a high priority link status; t is12An event validity duration representing a high-priority link state; t is13An event interval time representing a high priority link status; t is21An event start time representing a low priority link status; t is22An event validity duration representing a low-priority link state; t is23An event interval time representing a low priority link status; l represents a first integer, and the value range of L is [0, + ∞ ]](ii) a K represents a second integer and has a value range of [0, M]And M is the number of events of the high-priority link state contained in the statistical time period T.
Further, the high-priority link status is a connection link status, and the low-priority link status is a scan link status and/or an advertisement link status.
The second technical scheme adopted by the invention is as follows:
a multi-link management system of a low power consumption Bluetooth device, comprising at least two or more Bluetooth devices, wherein each Bluetooth device communicates by using the multi-link management method of the Bluetooth device.
The third technical scheme adopted by the invention is as follows:
a multilink management device of a low-power consumption Bluetooth device comprises an adjusting module and an executing module;
the adjusting module is used for automatically carrying out dynamic optimization adjustment on the time sequence parameters of each link state according to a preset program after acquiring the current time sequence parameters of each link state of the low-power-consumption Bluetooth device, so that the processing time conflict probability among the link states meets the preset requirement;
the execution module is used for setting parameters of each link state by adopting the adjusted time sequence parameters, so that each link state works according to the adjusted time sequence parameters.
Further, the adjusting module comprises a training obtaining unit, an adjusting unit and a calculating and judging unit;
the training acquisition unit is used for acquiring the current first time sequence parameter of each link state, and estimating and acquiring a second time sequence parameter after training the first time sequence parameter according to a preset model;
the adjusting unit is used for adjusting the time sequence of each link state according to the second time sequence parameter;
the calculation and judgment unit is used for calculating the time sequence conflict probability value of each link state by combining the second time sequence parameter and a preset expectation formula, judging whether the time sequence conflict probability value is smaller than a preset threshold value, and jumping to an execution module for continuous execution; otherwise, returning to the training acquisition unit and continuing to execute.
The fourth technical scheme adopted by the invention is as follows:
a multilink management device for low power consumption Bluetooth equipment comprises
At least one processor;
at least one memory for storing at least one program;
when the at least one program is executed by the at least one processor, the at least one processor is caused to implement a bluetooth low energy device multilink management method as described above.
The invention has the beneficial effects that: according to the invention, through carrying out automatic optimization and adjustment on the time sequence parameter parameters of each link state, the conflict of the Bluetooth baseband on time sequences when various states are processed and frequently switched among the various states is reduced, so that the low-power-consumption Bluetooth equipment can be in various link states at the same time, the processing performance of software is effectively improved, and the utilization efficiency of the Bluetooth baseband is improved.
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FIG. 1 is a flow chart of the steps of a method for managing multiple links of a Bluetooth low energy device according to the present invention;
FIG. 2 is a timing diagram of a Bluetooth low energy device in a connected link state;
FIG. 3 is a timing diagram of a Bluetooth low energy device in an advertising link state;
FIG. 4 is a timing diagram of a Bluetooth low energy device in a scan link state;
FIG. 5 is a flowchart of the timing parameter optimization adjustment steps for multiple links of a Bluetooth low energy device;
FIG. 6 is a diagram of a Bluetooth low energy device handling timing conflicts over multiple links;
FIG. 7 is a timing diagram after optimization adjustment;
FIG. 8 is a topology diagram of a Bluetooth low energy device multilink management system of the present invention;
fig. 9 is a block diagram of a multi-link management apparatus for a bluetooth low energy device according to the present invention.
Detailed Description
Example one
As shown in fig. 1, a method for managing multiple links of a bluetooth low energy device includes the following steps:
a1, after acquiring the current time sequence parameters of each link state of the low-power consumption Bluetooth device, automatically performing dynamic optimization adjustment on the time sequence parameters of each link state according to a preset program so as to enable the processing time conflict probability among each link state to meet the preset requirement;
and A2, setting parameters of each link state by adopting the adjusted time sequence parameters, so that each link state works according to the adjusted time sequence parameters.
The working principle of the method is as follows: one bluetooth low energy device can simultaneously reserve the Scanning, the advertiSing and the connection states, and can be connected with a plurality of different BLE devices in the connection state, for example, when the connection state is established between the first bluetooth low energy device and the second bluetooth low energy device, the third bluetooth low energy device is scanned through the Scanning state, because the bluetooth low energy device works in a time division or frequency division multiplexing mode, as long as the bluetooth low energy device processes the working time sequence of each link state, the bluetooth low energy device can simultaneously have a plurality of link states. According to the method, the time sequence parameters of the low-power-consumption Bluetooth device are automatically optimized and adjusted, so that time conflict is avoided in each link state, the low-power-consumption Bluetooth device can be freely switched between various link states, the utilization efficiency of a baseband is greatly improved, and the processing performance of software is improved.
Specifically, the step a1 includes steps a11 to a 13:
a11, obtaining the current first time sequence parameter of each link state, and estimating to obtain a second time sequence parameter after training the first time sequence parameter according to a preset model.
The step of obtaining the current first timing parameter of each link state specifically includes: before adding a new link state, judging whether other link states exist at present, acquiring a third time sequence parameter of the existing link state when judging that the existing state exists, and estimating a fourth time sequence parameter of the new link state according to the third time sequence parameter; and taking the third timing parameter and the fourth third timing parameter as the first timing parameter.
And A12, adjusting the time sequence of each link state according to the second time sequence parameter.
A13, calculating the time sequence conflict probability value of each link state by combining the second time sequence parameter and a preset expectation formula, judging whether the time sequence conflict probability value is smaller than a preset threshold value, if yes, executing a step S2; otherwise, step a11 continues.
Specifically, the preset expectation formula is specifically as follows:
Figure BDA0001816549470000051
wherein P represents the probability value of time sequence conflict, α represents a weight factor, the maximum value of α is 1, the minimum value is 0, N represents the statistical times in the statistical time period T, and P represents the statistical times in the statistical time period TiRepresenting the probability value of the time sequence conflict of each statistic in the statistic period.
Specifically, the link state is divided into a high-priority link state and a low-priority link state in the preset model, when a new timing parameter is estimated and obtained, the timing parameter of the high-priority link state is used as a reference parameter and is kept unchanged, and the preset timing requirement is met by adjusting the timing parameter of the low-priority link state;
the timing requirements are specifically:
T11+KT13≠T21+LT23i.e. T23≠(|T11-T21|+KT13) L,/L, and
T22≤T13-T12；
wherein, T11An event start time representing a high priority link status; t is12An event validity duration representing a high-priority link state; t is13An event interval time representing a high priority link status; t is21An event start time representing a low priority link status; t is22An event validity duration representing a low-priority link state; t is23An event interval time representing a low priority link status; l represents a first integer, and the value range of L is [0, + ∞ ]](ii) a K represents a second integer and has a value range of [0, M]And M is the number of events of the high-priority link state contained in the statistical time period T.
Specifically, the high-priority link status is a connection link status, and the low-priority link status is a scan link status and/or an advertisement link status.
By the method, various combined time sequence parameters are automatically optimized and selected through the baseband layer, so that the low-power-consumption Bluetooth equipment can be in a nonstandard by state, the BLE connection communication is preferably kept normal, meanwhile, the baseband can normally complete a scanning state and an updating state, conflicts in time sequence when the Bluetooth baseband processes various states and frequently switches among various states are reduced as far as possible, the processing performance of software is effectively improved, and the utilization efficiency of the Bluetooth baseband is improved.
The above method is described in detail with reference to fig. 2 to 6.
The low-power consumption bluetooth device comprises 5 link states including a standby state, an advertising state, a scanning state, an initializing state and a connection state, wherein the working time sequence of each link state is different, and the working time sequence specifically comprises the following steps:
the Connection state is formed by a Connection event, the timing sequence of the Connection event has two key parameters, Connection Interval and Slave Latency, the definition of the Connection event is shown in fig. 2, each arrow Interval represents a Connection event, and during each Connection event, the bluetooth devices use the same data channel for communication interaction. A condition for closing a connection event is that when md (more data) flags in data packets sent by both devices are all 0, either T _ ifs (inter Frame space) before the time of reaching the next connection event anchor point, or neither of the two devices receives the data packet of the other device, or CRC of two data packets received consecutively is checked for errors. The first two connection event close conditions may be considered normal close, and the latter two conditions may be considered abnormal close. The Slave Latency parameter determines the number of connection events which can be skipped from the middle when the Slave end starts to monitor a data packet sent by a Master after a connection event is ended, and the working mode of the Slave Latency can effectively save the BLE connection power consumption during operation under the condition that the communication data volume between BLE devices is small.
The advertisement status is composed of advertisement events, LE advertisement events are shown in fig. 3, each arrow interval represents an advertisement event, the starting time interval of two advertisement events is called advertisement interval, the selection of available advertisement channels (advertisement channels) is determined by the application layer, which also determines the number of advertisement data packets allowed to be sent in each advertisement event.
The working time of the Scanning state is determined by scan interval and scan window parameter, scan interval is the time interval of two Scanning, and scan window is the time window size of each Scanning, as shown in fig. 4, the advertisement channel used by each Scanning event is determined by the base band according to the situation.
Referring to fig. 5, when the bluetooth low energy device automatically analyzes and adjusts the baseband multilink processing timing parameters, the steps are as follows:
1. before a bluetooth low energy device needs to enter a certain link state, it is determined whether other link states exist. If yes, the following steps are required to be executed to optimize and adjust the time sequence of each link state, and the time sequence of each link state is prevented from conflicting in time; if not, only one link state exists, only a proper time sequence parameter is selected, and the following steps are not required to be executed.
2. And preliminarily estimating the time sequence parameter of the newly added link state according to the current time sequence parameter of the existing link state of the low-power-consumption Bluetooth equipment. If the BLE baseband already has other link states, the newly added link state cannot conflict with a certain start time of the existing link at least at the start time. For example, if a connection link state already exists and the BLE baseband needs to be added into the adapting state, the starting time of adapting needs to avoid the anchor point time possible by the last connection event.
3. Figure 6 shows an example of BLE multilink processing timing conflict, where a Connection link and an Advertising link have scheduling conflict at the time points marked by solid lines, but in an Advertising event with scheduling conflict at the starting time, it is possible that Advertising data packets on some Advertising channels can be processed normally, such as the last two dotted lines on the time axis, therefore, for the above possible situation differences of processing timing conflict, a maximum value of a weight α may be added to the timing conflict probability value P at a certain time, which is 1 and a minimum value of 0, assuming that N times of statistics are performed in the time period T, the total timing conflict probability value P may be expressed as:
Figure BDA0001816549470000071
as shown in fig. 6, 10 connection events are included in the time period T, and in this time period, the value of the full time conflict α is 1, and the values of the partial time conflict α are 0.6 and 0.3, respectively, so that the total time sequence conflict probability value P is 39%, which is a case where the conflict probability is relatively large, and the link parameters need to be further adjusted.
In practical situations, since the effective actual length of the Connection event may be a variable value with time, depending on the condition of normal shutdown, the collision probability must be trained for a period of time, and in this process, a certain data cleaning is required for the Connection event that is abnormally shutdown, and the basis for the collision probability statistics cannot be calculated.
In the step, if the time sequence conflict probability value P is smaller than a preset threshold value, the next step is not required to be executed, and the estimated time sequence parameters are directly adopted for working; and if the time sequence conflict probability value P is larger than or equal to a preset threshold value, executing the next step.
4. And re-estimating and adjusting each link parameter according to the statistical condition of the scheduling conflict training processed by the BLE baseband. If the base band processing time conflict probability P value exceeds the preset probability threshold value theta, the parameter value of one or some links needs to be readjusted, otherwise, no adjustment is made. Prioritizing Connection status if there are link parameters to adjust and Connection status existsNormal communication. The estimation and adjustment of link parameters requires a certain reference design model. Assume that a higher priority reference link state is assigned S1, its link parameters are first disregarded for adjustment, and another lower priority link state is parameter adjusted S2. Event start time of S1 is set to T11The effective duration of the event is T12Interval of events of T13And the event start time of S2 is T21The effective duration of the event is T22Interval of events of T23Then, the parameters to be adjusted at least need to satisfy the following two conditions:
(1)T11+KT13≠T21+LT23i.e. T23≠(|T11-T21|+KT13)/L；
(2)T22≤T13-T12；
Wherein L represents a first integer, and the value range of L is [0, + ∞ ]; k represents a second integer, the value range of K is [0, M ], and M is the number of events of the high-priority link state contained in the statistical time period T.
According to this parameter adjustment method, it is possible to extend to a case where there are more link states in the BLE baseband.
FIG. 6 shows the results shown in FIG. 7 after parameter selection and adjustment in the manner described above. Of course, in a practical application scenario, since the effective length of the connection event when the BLE device is in the connected state may be a dynamically changing process, the adjustment of the link parameter may be a more complex process.
5. The process is a dynamic training, estimating and adjusting process until the time sequence conflict probability value on each link processing time sequence meets a preset threshold value.
Example two
Referring to fig. 8, a bluetooth low energy device multilink management system at least includes two or more bluetooth low energy devices, and each bluetooth low energy device communicates by using a bluetooth low energy device multilink management method as claimed in the first embodiment of the present invention.
In the multilink management system for bluetooth low energy devices of this embodiment, each bluetooth low energy device in the system can execute the multilink management method for bluetooth low energy devices provided in the method embodiment of the present invention, and can execute any combination of the implementation steps of the method embodiment, and has corresponding functions and benefits of the method.
EXAMPLE III
Referring to fig. 9, a multilink management apparatus for a bluetooth low energy device includes an adjustment module and an execution module;
the adjusting module is used for automatically carrying out dynamic optimization adjustment on the time sequence parameters of each link state according to a preset program after acquiring the current time sequence parameters of each link state of the low-power-consumption Bluetooth device, so that the processing time conflict probability among the link states meets the preset requirement;
the execution module is used for setting parameters of each link state by adopting the adjusted time sequence parameters, so that each link state works according to the adjusted time sequence parameters.
Further as a preferred embodiment, the adjusting module includes a training acquiring unit, an adjusting unit and a calculating and judging unit;
the training acquisition unit is used for acquiring the current first time sequence parameter of each link state, and estimating and acquiring a second time sequence parameter after training the first time sequence parameter according to a preset model;
the adjusting unit is used for adjusting the time sequence of each link state according to the second time sequence parameter;
the calculation and judgment unit is used for calculating the time sequence conflict probability value of each link state by combining the second time sequence parameter and a preset expectation formula, judging whether the time sequence conflict probability value is smaller than a preset threshold value, and jumping to an execution module for continuous execution; otherwise, returning to the training acquisition unit and continuing to execute.
The multilink management device for the low-power-consumption bluetooth equipment can execute the multilink management method for the low-power-consumption bluetooth equipment provided by the method embodiment of the invention, can execute any combination implementation steps of the method embodiment, and has corresponding functions and beneficial effects of the method.
Example four
A multilink management device for low power consumption Bluetooth equipment comprises
At least one processor;
at least one memory for storing at least one program;
when the at least one program is executed by the at least one processor, the at least one processor is enabled to implement a bluetooth low energy device multilink management method according to embodiment one.
The multilink management device for the low-power-consumption bluetooth equipment can execute the multilink management method for the low-power-consumption bluetooth equipment provided by the method embodiment of the invention, can execute any combination implementation steps of the method embodiment, and has corresponding functions and beneficial effects of the method.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A multilink management method of a low-power Bluetooth device is characterized by comprising the following steps:
s1, after acquiring the current time sequence parameters of each link state of the low-power consumption Bluetooth device, automatically carrying out dynamic optimization adjustment on the time sequence parameters of each link state according to a preset program so as to enable the processing time conflict probability among each link state to meet the preset requirement;
and S2, setting parameters of each link state by adopting the adjusted time sequence parameters, so that each link state works according to the adjusted time sequence parameters.
2. The bluetooth low energy device multilink management method according to claim 1, wherein the step S1 includes the steps of:
s11, obtaining the current first time sequence parameter of each link state, and estimating to obtain a second time sequence parameter after training the first time sequence parameter according to a preset model;
s12, adjusting the time sequence of each link state according to the second time sequence parameter;
s13, calculating the time sequence conflict probability value of each link state by combining the second time sequence parameter and a preset expectation formula, judging whether the time sequence conflict probability value is smaller than a preset threshold value, and if so, executing a step S2; otherwise, the process continues to step S11.
3. The method according to claim 2, wherein the preset expectation formula is as follows:
Figure FDA0001816549460000011
wherein P represents the probability value of time sequence conflict, α represents a weight factor, the maximum value of α is 1, the minimum value is 0, N represents the statistical times in the statistical time period T, and P represents the statistical times in the statistical time period TiRepresenting the probability value of the time sequence conflict of each statistic in the statistic period.
4. The method according to claim 3, wherein the step of obtaining the current first timing parameter of each link state in S11 specifically includes:
before adding a new link state, judging whether other link states exist at present, acquiring a third time sequence parameter of the existing link state when judging that the existing state exists, and estimating a fourth time sequence parameter of the new link state according to the third time sequence parameter;
and taking the third timing parameter and the fourth third timing parameter as the first timing parameter.
5. The method according to claim 4, wherein the link status in the preset model is divided into a high-priority link status and a low-priority link status, when a new timing parameter is estimated and obtained, the timing parameter of the high-priority link status is kept unchanged as a reference parameter, and the preset timing requirement is met by adjusting the timing parameter of the low-priority link status;
the timing requirements are specifically:
T11+KT13≠T21+LT23i.e. T23≠(|T11-T21|+KT13) L,/L, and
T22≤T13-T12；
wherein, T11An event start time representing a high priority link status; t is12An event validity duration representing a high-priority link state; t is13An event interval time representing a high priority link status; t is21An event start time representing a low priority link status; t is22An event validity duration representing a low-priority link state; t is23An event interval time representing a low priority link status; l represents a first integer, and the value range of L is [0, + ∞ ]](ii) a K represents a second integer and has a value range of [0, M]And M is the number of events of the high-priority link state contained in the statistical time period T.
6. The BLUETOOTH low-power-consumption device multilink management method of claim 5, wherein the high-priority link state is a connected link state and the low-priority link state is a scanned link state and/or an advertised link state.
7. A multi-link management system of a Bluetooth low energy device, comprising at least two or more Bluetooth low energy devices, wherein each Bluetooth low energy device communicates by using the multi-link management method of the Bluetooth low energy device as claimed in any one of claims 1 to 6.
8. A multilink management device of a low-power consumption Bluetooth device is characterized by comprising an adjusting module and an executing module;
the adjusting module is used for automatically carrying out dynamic optimization adjustment on the time sequence parameters of each link state according to a preset program after acquiring the current time sequence parameters of each link state of the low-power-consumption Bluetooth device, so that the processing time conflict probability among the link states meets the preset requirement;
the execution module is used for setting parameters of each link state by adopting the adjusted time sequence parameters, so that each link state works according to the adjusted time sequence parameters.
9. The apparatus of claim 8, wherein the adjusting module comprises a training acquisition unit, an adjusting unit and a calculation and judgment unit;
the training acquisition unit is used for acquiring the current first time sequence parameter of each link state, and estimating and acquiring a second time sequence parameter after training the first time sequence parameter according to a preset model;
the adjusting unit is used for adjusting the time sequence of each link state according to the second time sequence parameter;
the calculation and judgment unit is used for calculating the time sequence conflict probability value of each link state by combining the second time sequence parameter and a preset expectation formula, judging whether the time sequence conflict probability value is smaller than a preset threshold value, and jumping to an execution module for continuous execution; otherwise, returning to the training acquisition unit and continuing to execute.
10. A multilink management device of a low-power Bluetooth device is characterized by comprising
At least one processor;
at least one memory for storing at least one program;
when executed by the at least one processor, cause the at least one processor to implement a bluetooth low energy device multilink management method as claimed in any one of claims 1-6.
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