CN105406923A - Bluetooth interconnection method and system for mobile terminal - Google Patents
Bluetooth interconnection method and system for mobile terminal Download PDFInfo
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- CN105406923A CN105406923A CN201510995444.8A CN201510995444A CN105406923A CN 105406923 A CN105406923 A CN 105406923A CN 201510995444 A CN201510995444 A CN 201510995444A CN 105406923 A CN105406923 A CN 105406923A
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/23—Manipulation of direct-mode connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/40—Connection management for selective distribution or broadcast
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- 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 Bluetooth interconnection method and system for a mobile terminal. The Bluetooth interconnection method comprises the following steps: setting a first Bluetooth at a main body of the mobile terminal and setting a second Bluetooth at a display part of the mobile terminal; inquiring a nearby Bluetooth broadcast by the first Bluetooth and detecting a corresponding Bluetooth received signal strength value, querying to at least one second Bluetooth, and judging whether a Bluetooth received signal strength value of the second Bluetooth is greater than a signal strength threshold value, if so, then transmitting a connection request signaling to the second Bluetooth by the first Bluetooth to establish a connection with the second Bluetooth, and recording a corresponding Bluetooth address; after the connection is successful, when no data or instruction needs to be transmitted, entering a low power standby state by the first Bluetooth and the second Bluetooth; and when the data or instruction needs to be transmitted, returning to an activated state again by the first Bluetooth and the second Bluetooth; therefore, after startup, a Bluetooth chip is always under a low power connection state, thus the Bluetooth response speed can be effectively improved and the Bluetooth transmission delay can be reduced.
Description
Technical field
The present invention relates to mobile terminal Bluetooth technology field, in particular a kind of Bluetooth interconnection method and system of mobile terminal.
Background technology
At present, smart mobile phone comprises display section and main part, and display section comprises LCD(LCDs) and TP(touch-screen), main part comprises cell phone mainboard.And LCD and TP is connected with cell phone mainboard by FPC, when user uses, LCD and TP and cell phone mainboard are inseparable.Although this design realizes simple, also can bring certain difficulty to handset structure design, need the putting position considering FPC and FPC connector, also easily occur loose contact when mobile phone final assembly and cannot show or touch-control.Meanwhile, for user, LCD and TP of mobile phone is generally the parts the most easily broken, and user generally needs to look for the maintenance store of specialty to change LCD or TP, very inconvenient.Mobile phone wireless display and Wireless touch system can well address these problems, the LCD of mobile phone shows data and TP touch data all passes through wireless transmission, FPC is no longer needed to connect, LCD with TP of mobile phone can be separated with mobile phone body by user easily, thus make that structural design is simple, final assembly is convenient.User's maintain and replace LCD and TP also becomes very simple.
And the low-speed bidirectional data of transmitting cell-phone main part and display section (LCD and TP part) in the Wireless Display of mobile phone and Wireless touch system, are often carried out by conventional Bluetooth scheme, comprising TP touch data, audio signal, the control of LCD and TP and state information etc., the data volume of these low-speed bidirectional data is little, but requirement of real-time is higher, such as the TP touch data of LCD and TP part needs the application processor being passed to mobile phone body part by bluetooth in real time to process, particularly in the application scenarios that the requirement of real-time such as to play games is higher, TP touch data can not have large time delay, not so Consumer's Experience can be had a strong impact on.In the Wireless Display and Wireless touch system of mobile phone, bluetooth response speed is slow, and Bluetooth transmission time delay is high.Concerning user, use inconvenience.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of Bluetooth interconnection method and system of mobile terminal, and the bluetooth response speed being intended to solve the Wireless Display of mobile terminal in prior art and touch-control is slow, the problem that Bluetooth transmission time delay is high.
The technical scheme that technical solution problem of the present invention adopts is as follows:
A Bluetooth interconnection method for mobile terminal, wherein, comprising:
A, the first bluetooth is set in the main part of mobile terminal, the second bluetooth is set in the display section of mobile terminal; Described second bluetooth is in the pattern that can be found and the bluetooth title of broadcast correspondence and Bluetooth address;
Bluetooth broadcast near B, the first bluetooth inquiry also detects corresponding Bluetooth received signals intensity level, inquire at least one second bluetooth, judge whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then the first bluetooth connects to this second bluetooth transmission connection request signaling and the second bluetooth, and the Bluetooth address that record is corresponding;
After C, successful connection when not having data or instruction to need transmission, the first bluetooth and this second bluetooth enter low-power consumption standby state, and when having data or instruction to need transmission, the first bluetooth and this second bluetooth come back to state of activation.
The Bluetooth interconnection method of described mobile terminal, wherein, described step B specifically comprises:
Bluetooth broadcast near B1, the first bluetooth inquiry also detects corresponding Bluetooth received signals intensity level;
B2, judge whether the first bluetooth inquires bluetooth title corresponding at least one the second bluetooth, if yes, then perform step B3; If NO, then step B1 is returned;
B3, judge whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then perform step B4; If NO, then step B1 is returned;
B4, the first bluetooth send connection request signaling to this second bluetooth and the second bluetooth connects, and the Bluetooth address that record is corresponding.
The Bluetooth interconnection method of described mobile terminal, wherein, described step B3 also comprises:
B31, judge whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then perform step B4; If NO, then step B32 is performed;
B32, judge whether the second bluetooth that the first bluetooth had connected, if yes, then perform step B4, if NO, then return step B1.
The Bluetooth interconnection method of described mobile terminal, wherein, described signal strength threshold is-30dBm.
The Bluetooth interconnection method of described mobile terminal, wherein, also comprises after described step C:
D, after display section is lit, judge not have between the first bluetooth and this second bluetooth the duration whether overtime threshold value of transfer of data, if exceed, then the first bluetooth sends empty packet to this second bluetooth every the very first time, second bluetooth does not process when receiving described empty packet, keeps state of activation to make the first bluetooth and this second bluetooth always.
A Bluetooth interconnection system for mobile terminal, wherein, comprising:
Broadcast module, for arranging the first bluetooth in the main part of mobile terminal, arranges the second bluetooth in the display section of mobile terminal; Described second bluetooth is in the pattern that can be found and the bluetooth title of broadcast correspondence and Bluetooth address;
Interconnecting modules, for also detecting corresponding Bluetooth received signals intensity level by the Bluetooth broadcast near the first bluetooth inquiry, inquire at least one second bluetooth, judge whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then the first bluetooth connects to this second bluetooth transmission connection request signaling and the second bluetooth, and the Bluetooth address that record is corresponding;
State change module, for after successful connection when do not have data or instruction need transmission time, the first bluetooth and this second bluetooth enter low-power consumption standby state, when have data or instruction need transmit time, the first bluetooth and this second bluetooth come back to state of activation.
The Bluetooth interconnection system of described mobile terminal, wherein, described interconnecting modules comprises:
Bluetooth inquiry unit, for also detecting corresponding Bluetooth received signals intensity level by the Bluetooth broadcast near the first bluetooth inquiry;
Title detecting unit, for judging whether the first bluetooth inquires bluetooth title corresponding at least one the second bluetooth, if yes, then performs intensity detection unit; If NO, then bluetooth inquiry unit is returned;
Intensity detection unit, for judging whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then performs connection establishment unit; If NO, then bluetooth inquiry unit is returned;
Connection establishment unit, for being connected to this second bluetooth transmission connection request signaling and the second bluetooth by the first bluetooth, and the Bluetooth address that record is corresponding.
The Bluetooth interconnection system of described mobile terminal, wherein, described intensity detection unit comprises:
Intensity judging unit, for judging whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then performs connection establishment unit; If NO, then bluetooth judging unit is performed;
Bluetooth judging unit, for judging whether the second bluetooth that the first bluetooth had connected, if yes, then performs connection establishment unit, if NO, then returns bluetooth inquiry unit.
The Bluetooth interconnection system of described mobile terminal, wherein, described signal strength threshold is-30dBm.
The Bluetooth interconnection system of described mobile terminal, wherein, also comprises:
Active module, for after display section is lit, judge not have between the first bluetooth and this second bluetooth the duration whether overtime threshold value of transfer of data, if exceed, then the first bluetooth sends empty packet to this second bluetooth every the very first time, second bluetooth does not process when receiving described empty packet, keeps state of activation to make the first bluetooth and this second bluetooth always.
The Bluetooth interconnection method and system of a kind of mobile terminal provided by the present invention, the bluetooth response speed efficiently solving the Wireless Display of mobile terminal in prior art and touch-control is slow, the problem that Bluetooth transmission time delay is high, by arranging the first bluetooth in the main part of mobile terminal, the second bluetooth is set in the display section of mobile terminal; Described second bluetooth is in the pattern that can be found and the bluetooth title of broadcast correspondence and Bluetooth address; Bluetooth broadcast near first bluetooth inquiry also detects corresponding Bluetooth received signals intensity level, inquire at least one second bluetooth, judge whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then the first bluetooth connects to this second bluetooth transmission connection request signaling and the second bluetooth, and the Bluetooth address that record is corresponding; After successful connection when not having data or instruction to need transmission, the first bluetooth and this second bluetooth enter low-power consumption standby state, and when having data or instruction to need transmission, the first bluetooth and this second bluetooth come back to state of activation; After making to start shooting, Bluetooth chip is in low-power consumption connection status always, effectively can improve the response speed of bluetooth data transmission and control command, can effectively reduce Bluetooth transmission time delay by the empty packet activation mechanism of bluetooth simultaneously, can be applicable to mobile phone wireless display and Wireless touch system, also can be applied to the higher Bluetooth control system of other requirement of real-times; Easy to use, interconnection is convenient, brings and facilitates greatly.
Accompanying drawing explanation
Fig. 1 is the flow chart of the Bluetooth interconnection method preferred embodiment of mobile terminal provided by the invention.
Fig. 2 is the method flow diagram of the Bluetooth interconnection method Application Example of mobile terminal provided by the invention.
Fig. 3 is the situation of change schematic diagram that complete machine that bluetooth causes secretly shields standby current.
Fig. 4 is the structured flowchart of the Bluetooth interconnection system preferred embodiment of mobile terminal provided by the invention.
Embodiment
The invention provides a kind of Bluetooth interconnection method and system of mobile terminal, for making object of the present invention, technical scheme and advantage clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
First as follows to conventional Bluetooth protocol overview.
The exploitation of conventional Bluetooth agreement mainly at logic link control and adapting protocol (LogicalLinkControlandAdaptationProtocol, L2CAP) and general-purpose accessing protocol layer (GenericAccessProfile, GAP), will be described below respectively.
About logic link control and adapting protocol (L2CAP), according to the conventional Bluetooth agreement that bluetooth alliance issues, logic link control and adapting protocol (LogicalLinkControlandAdaptationProtocol, L2CAP) define command format and data format.Two bluetooth equipments need mutual a series of order in communication process, and the general signaling format of command channel is as shown in table 1.Table 1 is the general signaling format of command channel.
Table 1
Wherein, Length represents the byte length of Commands; ChannelID is fixed as 0x0001; Code in Commands represents the type of order, as connection request (Connectionrequest), connects and replys (Connectionresponse), as shown in table 2; Identifier in Commands is used for matching request and reply; Length in Commands represents the byte length of the Data in Commands; Data in Commands represents the portable information of order.Table 2 is command code implication.
Table 2
The Commands form of connection request is as shown in table 3.Wherein, PSM presentation protocol/service multiplexing, is divided into two parts, and Part I is used as agreement fixing distribution by bluetooth alliance, and Part II is used as service by system dynamic assignment, minimumly accounts for 2 byte lengths; SourceCID(source channel id) represent the channel id of bluetooth equipment sending connection request.
Table 3
Connect the Commands form of replying as shown in table 4.
Table 4
Wherein, DestinationCID(object channel id) represent the channel id sending and connect the bluetooth equipment of replying; SourceCID(source channel id) represent the channel id receiving and connect the bluetooth equipment of replying, directly copy from the SourceCID of connection request order; Result represents the result of connection request signaling, such as successful connection (Connectionsuccessful), (Connectionpending) undetermined and refusal (Connectionrefused) etc., as shown in table 5.Table 5 is the end value of connection request signaling.
Table 5
For the situation that connection request result is undetermined, setting forth result further with state Status is reason undetermined, as shown in table 6.Table 6 is Status value.
Table 6
About general-purpose accessing agreement (GAP), general-purpose accessing protocol layer defines inquiry, action and the state such as can be found, connects, can be connected and be connected.
Bluetooth equipment can be inquired about neighbouring bluetooth equipment by time division multiplexing mode simultaneously and be found by neighbouring bluetooth equipment, and namely conventional Bluetooth equipment can be served as query facility (Inquiringdevice) simultaneously and can be found equipment (Discoverabledevice).Query facility obtains the Bluetooth address of the equipment that can be found by inquiry.
Bluetooth equipment can connect neighbouring bluetooth equipment by time division multiplexing mode simultaneously and be connected with by neighbouring bluetooth equipment, and namely bluetooth equipment can serve as connection device (Connectingdevice) and can connected equipment (Connectabledevice) simultaneously.Connection device is to sending connection request (ConnectionRequest) signaling by connected equipment; Connection reply (ConnectionResponse) signaling can be sent by connected equipment to connection device, as shown in table 7.After successful connection, the bluetooth equipment of initiating to connect becomes main frame (Master) in a network, and the bluetooth equipment be connected becomes in a network from machine (Slave).Table 7 is can connection device and can illustrating by the Signalling exchange between connected equipment.
Table 7
Mobile terminal of the present invention, the main part of mobile terminal arranges the first bluetooth, arranges the second bluetooth in the display section of mobile terminal.The main part of mobile terminal such as mainboard etc., the display section of mobile terminal comprises display screen and touch-screen etc.Described mobile terminal is mobile phone, panel computer, notebook etc.
Refer to Fig. 1, Fig. 1 is the flow chart of the Bluetooth interconnection method preferred embodiment of mobile terminal provided by the invention, as shown in the figure, said method comprising the steps of:
Step S100, the first bluetooth is set in the main part of mobile terminal, the second bluetooth is set in the display section of mobile terminal; Described second bluetooth is in the pattern that can be found and the bluetooth title of broadcast correspondence and Bluetooth address;
Bluetooth broadcast near step S200, the first bluetooth inquiry also detects corresponding Bluetooth received signals intensity level, inquire at least one second bluetooth, judge whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then the first bluetooth connects to this second bluetooth transmission connection request signaling and the second bluetooth, and the Bluetooth address that record is corresponding;
After step S300, successful connection when not having data or instruction to need transmission, the first bluetooth and this second bluetooth enter low-power consumption standby state, and when having data or instruction to need transmission, the first bluetooth and this second bluetooth come back to state of activation.
Below in conjunction with specific embodiment, above-mentioned steps is described in detail.
In the step s 100, the first bluetooth is set in the main part of mobile terminal, the second bluetooth is set in the display section of mobile terminal; Described second bluetooth is in the pattern that can be found and the bluetooth title of broadcast correspondence and Bluetooth address.
Specifically, be described as follows for mobile phone.Mobile phone wireless display and Wireless touch system, namely mobile phone LCD display data and TP touch data all pass through wireless transmission, no longer need FPC to connect, LCD with TP of mobile phone can be separated with mobile phone body by user easily.Thus make that structural design is simple, final assembly is convenient.User's maintain and replace LCD and TP also becomes very simple.
In the Wireless Display and Wireless touch system of mobile phone, transmitting cell-phone main part and LCD and TP low-speed bidirectional data are partly come with a pair Bluetooth chip, if just set up bluetooth to connect before data or command, so the bluetooth response time can be long, generally have the Bluetooth transmission time delay of 2 ~ 3 seconds, Consumer's Experience is bad.In order to improve bluetooth response speed, a kind of blue-tooth intelligence interconnection mechanism is needed to guarantee that this is in connection status to Bluetooth chip always, if do not have data or instruction to transmit after successful connection just enter low-power consumption standby state, need when having data or instruction to come back to state of activation during transmission.When being in connection status, the propagation delay time of bluetooth is generally no more than 0.5 second.
When practical application, in the Wireless Display and Wireless touch system of mobile phone, the Bluetooth chip of definition mobile phone body part is " bluetooth A ", and namely the first bluetooth, has specific bluetooth title, as " XXX wireless screen main frame ".The Bluetooth chip of definition LCD and TP part is " bluetooth B ", namely the second bluetooth, there is specific bluetooth title, as " XXX wireless screen ", may occur multiple " bluetooth B " simultaneously, namely user may have polylith LCD and TP, can change at any time, LCD and TP part can switching on and shutting down separately.
During start, " bluetooth A " and " bluetooth B " can be automatically switched on." bluetooth B " can be in and can be found pattern, broadcasts specific bluetooth title, as " XXX wireless screen ", until connect with certain " bluetooth A ".
In step s 200, Bluetooth broadcast near first bluetooth inquiry also detects corresponding Bluetooth received signals intensity level, inquire at least one second bluetooth, judge whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then the first bluetooth connects to this second bluetooth transmission connection request signaling and the second bluetooth, and the Bluetooth address that record is corresponding.
Specifically, " bluetooth A " (namely first bluetooth) can be inquired about neighbouring conventional Bluetooth equipment and be detected Bluetooth received signals intensity RSSI (ReceivedSignalStrengthIndication) value, until connect with certain " bluetooth B " (namely second bluetooth)." bluetooth B " is in and can be found pattern and broadcasts specific second bluetooth title.Due to more than one of the second bluetooth possibility, when for example user changes the display section of mobile terminal, or when having multiple mobile terminal of the present invention around, conventional Bluetooth equipment so near " bluetooth A " inquiry also detects Bluetooth received signals intensity RSSI value, " bluetooth A " inquires " the bluetooth B " of one or more broadcast particular bluetooth title, then judge whether that the RSSI value of " bluetooth B " is greater than signal strength threshold, if yes, then " bluetooth A " to " bluetooth B " transmission " connection request " signaling and " bluetooth B " connect, and record is somebody's turn to do the Bluetooth address of " bluetooth B ".
Further, described step S200 specifically comprises:
Bluetooth broadcast near S201, the first bluetooth inquiry also detects corresponding Bluetooth received signals intensity level;
S202, judge whether the first bluetooth inquires bluetooth title corresponding at least one the second bluetooth, if yes, then perform step S203; If NO, then step S201 is returned;
S203, judge whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then perform step S204; If NO, then step S201 is returned;
S204, the first bluetooth send connection request signaling to this second bluetooth and the second bluetooth connects, and the Bluetooth address that record is corresponding.
Specifically, refer to Fig. 2, Fig. 2 is the method flow diagram of the Bluetooth interconnection method Application Example of mobile terminal provided by the invention, and when practical application, the intelligent interconnection process of " bluetooth A " and " bluetooth B " as shown in Figure 2.During start, " bluetooth A " and " bluetooth B " can be automatically switched on." bluetooth B " can be in and can be found pattern, broadcasts specific bluetooth title, as " XXX wireless screen ", until connect with certain " bluetooth A "." bluetooth A " can inquire about neighbouring conventional Bluetooth equipment and detect Bluetooth received signals intensity RSSI (ReceivedSignalStrengthIndication) value, until connect with certain " bluetooth B ".
When " bluetooth A " inquires " the bluetooth B " of one or more broadcast particular bluetooth title.If have the RSSI value of " bluetooth B " to be greater than threshold values F(i.e. signal strength threshold), " bluetooth A " is to this " bluetooth B " transmission " connection request " signaling, " bluetooth B " to " bluetooth A " transmission " should connect and reply " signaling, " bluetooth A " connects with this " bluetooth B ", and record is somebody's turn to do the Bluetooth address of " bluetooth B ".
Further, described step S203 also comprises:
S231, judge whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then perform step S204; If NO, then step S232 is performed;
S232, judge whether the second bluetooth that the first bluetooth had connected, if yes, then perform step S204, if NO, then return step S201.
Specifically, please continue to refer to Fig. 2, if do not have RSSI value to be greater than " the bluetooth B " of threshold values F, so then judge whether that " bluetooth B " is the bluetooth equipment connecting (or connecting) " bluetooth A " last time, as long as there be one " bluetooth B " to be the bluetooth equipment connected last time, namely the Bluetooth address recorded when its Bluetooth address is successful connection last time, " bluetooth A " is to this " bluetooth B " transmission " connection request " signaling, " bluetooth B " to " bluetooth A " transmission " should connect and reply " signaling, " bluetooth A " connects with this " bluetooth B ", and record is somebody's turn to do the Bluetooth address of " bluetooth B ".
About the setting of bluetooth RSSI threshold values F.In principle, there is certain linear relationship in the bluetooth RSSI value that recipient receives and distance, namely bluetooth RSSI value reduces along with the increase of two bluetooth equipment distances.But in fact due to bluetooth dual-mode antenna, not omnidirectional antenna and equipment itself are to the stop of Bluetooth signal completely, and the bluetooth RSSI value that same distance different directions receives has larger difference.When hardware designs, need to ensure when mobile phone body part and LCD and TP part is assembled together, the antenna of " bluetooth A " near the antenna of " bluetooth B ", thus guarantee now " bluetooth A " RSSI value of " bluetooth B " that receives enough greatly, as-30dBm.When LCD and TP part is away from mobile phone body part, as during away from more than 50 centimetres, the RSSI value of " bluetooth B " that " bluetooth A " receives is generally less than-50dBm.Therefore, it is possible to by setting bluetooth RSSI threshold values F(as-30dBm) to filter out which equipment be the equipment that user wishes to connect, to be namely assembled to or near the bluetooth equipment on LCD and TP of mobile phone body part." bluetooth A " meeting preferential attachment RSSI is greater than " the bluetooth B " of threshold values F, and namely user wishes that equipment of connection, prevents to connect by mistake, ensures fail safe.For " bluetooth B " on new LCD and TP, just can be connected by " the bluetooth A " of mobile phone body part when only having its bluetooth RSSI value to be greater than threshold values F, for " bluetooth B " on LCD and TP just connected last time, can be connected by " the bluetooth A " of mobile phone body part at a distance when not having other bluetooth RSSI value to be greater than the equipment of threshold values F, to the not requirement of bluetooth RSSI value, namely " bluetooth A " only finds that " the bluetooth B " just connected last time can connect with it at once.
In step S300, after successful connection when not having data or instruction to need transmission, the first bluetooth and this second bluetooth enter low-power consumption standby state, and when having data or instruction to need transmission, the first bluetooth and this second bluetooth come back to state of activation.Specifically, if do not have data or instruction to transmit after successful connection just enter low-power consumption standby state, need when having data or instruction to come back to state of activation during transmission.Like this, after blue-tooth intelligence interconnection mechanism of the present invention makes to start shooting, Bluetooth chip is in low-power consumption connection status always, although 1 ~ 2mA standby current can be increased, little on the standby current impact of entirety, and effectively can improve the response speed of bluetooth data transmission and control command.
Preferably, disconnect if " bluetooth A " is connected with " bluetooth B ", " bluetooth B " can enter again can be found pattern, broadcasts specific bluetooth title, until connect with certain " bluetooth A "." bluetooth A " again inquires about neighbouring conventional Bluetooth equipment and detects Bluetooth received signals intensity RSSI value, until again connect with certain " bluetooth B ".
Such blue-tooth intelligence interconnection process, can realize " bluetooth A " and " bluetooth B " and start shooting from being dynamically connected, Auto-reconnect after disconnecting, and also can realize " bluetooth B " that and bluetooth RSSI value automatic when there being multiple " bluetooth B " be greater than threshold values F and connect.When user wants to change LCD and TP, as long as open new LCD and TP and be assembled to mobile phone body part, simultaneously by closing old LCD and TP, or restart mobile phone body part, or old LCD with TP part is disconnected original bluetooth away from methods such as mobile phone body parts and is connected, then " the bluetooth A " of mobile phone body part connects automatically with new LCD and TP " bluetooth B " partly.
Further, also comprise after described step S300:
S400, after display section is lit, judge not have between the first bluetooth and this second bluetooth the duration whether overtime threshold value of transfer of data, if exceed, then the first bluetooth sends empty packet to this second bluetooth every the very first time, second bluetooth does not process when receiving described empty packet, keeps state of activation to make the first bluetooth and this second bluetooth always.
Specifically, when after a pair Bluetooth chip successful connection, if do not have data to transmit, after waiting for certain hour, just entering low-power consumption standby state, needing when there being data to come back to state of activation during transmission.Table 8 is that a pair Bluetooth chip connects later " propagation delay time " test result, and wherein, " propagation delay time " represents that a Bluetooth chip sends at GAP layer empty packet to receive this sky packet whole time to another Bluetooth chip; Can wait for one " stand-by period " before each transmission empty packet, i.e. the interval time of twice empty Packet Generation.Test result shows: when " stand-by period " at 0 ~ 5 second time, can complete transfer of data fast between two Bluetooth chips, average " propagation delay time " is about 35 milliseconds; When " stand-by period " is greater than 5 seconds, 30 seconds such as in table, the data transmission period between two Bluetooth chips can increase, and average " propagation delay time " is about 380 milliseconds.
Table 8
Refer to Fig. 3, Fig. 3 be when " stand-by period " be greater than 5 seconds (as 7 seconds) time, the complete machine caused by bluetooth secretly shields the situation of change of standby current, i.e. Bluetooth chip situation about changing back and forth in state of activation and low-power consumption standby state.Each empty Packet Generation or the rear Bluetooth chip of reception can keep the state of activation in about 5 seconds, now complete machine secretly shields average standby current and is about 29mA, Bluetooth chip can enter low-power consumption standby state after 5 seconds, and now complete machine secretly shields average standby current and drops to and be about 7mA.Power consumption during power dissipation ratio holding state during bluetooth state of activation approximately increases 22mA.
These characteristics according to above-mentioned bluetooth: there is when Bluetooth Low Energy is standby lower power consumption and higher transmission time delay; Bluetooth has comparatively low transmission time delay and higher power dissipation when state of activation.In the Wireless Display and Wireless touch system of mobile phone, transmitting cell-phone main part and LCD and TP low-speed bidirectional data are partly come with a pair Bluetooth chip, adopt the Bluetooth control mechanism of lower power consumption when mobile phone secretly shields, adopt the Bluetooth control mechanism compared with low transmission time delay when mobile phone bright screen.
When mobile phone secretly shields standby, the data high less than requirement of real-time and signaling need this to transmit Bluetooth chip, in order to reduce the standby current of complete machine, this enters low-power consumption standby state to after Bluetooth chip successful connection, needs to come back to state of activation during transmission when having data or instruction.When user lights screen, Bluetooth transmission is needed to open the instruction of LCD, if now bluetooth is in low-power consumption standby state, the extra time increasing about 380 milliseconds is so needed to transmit this instruction, but, because the operations such as LCD power-up initializing itself need the longer time, the additional transmissions time delay that therefore bluetooth is brought affects little on Consumer's Experience, and must ensure enough low complete machine standby current when mobile phone secretly shields standby.Therefore, when mobile phone secretly shields standby, this does not make an amendment the controlling mechanism of bluetooth, if that is, do not have data or instruction to transmit after successful connection just enter low-power consumption standby state, needs to come back to state of activation during transmission when having data or instruction.
After user lights LCD, user can pass through TP touch-control mobile phone at any time, at this moment needs this to prepare transmission TP touch data at any time to Bluetooth chip.The time that user clicks TP to TP output touch data is approximately 45 milliseconds, and namely the touch-control time delay of TP is approximately 45 milliseconds.If now bluetooth is in state of activation, the application processor so just TP touch data can being passed to mobile phone body part in the time of about 35 milliseconds processes, and the extra touch-control time delay that bluetooth is brought is little on Consumer's Experience impact.If but now bluetooth is in low-power consumption standby state, the application processor so just needing the time of about 380 milliseconds TP touch data could be passed to mobile phone body part processes, the extra touch-control time delay that bluetooth is brought is original more than 10 times of touch-control time delay, has larger impact to Consumer's Experience.Therefore the present invention devises the empty packet activation mechanism of a kind of bluetooth, and namely above-mentioned steps S400, during bright screen, makes bluetooth be in state of activation always, reduces Bluetooth transmission time delay.
In the Wireless Display and Wireless touch system of mobile phone, the Bluetooth chip of definition mobile phone body part is " bluetooth A ", and the Bluetooth chip of definition LCD and TP part is " bluetooth B ".After lighting LCD, " bluetooth A " starts to perform empty packet activation mechanism until close LCD.After lighting LCD, if there are normal data to transmit between " bluetooth A " and " bluetooth B ", just transmit normal data, if do not have normal data to transmit and there is no the state of transfer of data more than 5 seconds (namely time threshold is set to 5 seconds), " bluetooth A " is allowed to send an empty packet to " bluetooth B " at GAP layer every 5 seconds (namely the very first time is set to 5 seconds), make " bluetooth A " and " bluetooth B " keep state of activation, " bluetooth B " is left intact after receiving this packet always.If again there are normal data to transmit between " bluetooth A " and " bluetooth B ", just transmit normal data.Circulation like this, until close LCD.Meanwhile, between " bluetooth A " and " bluetooth B ", transmit normal data, state of activation after every data transfer is complete, can be kept to be greater than 5 seconds.Like this, after the screen of mobile terminal just can be made to be lit, the first bluetooth and the second bluetooth are in state of activation always, thus reduce Bluetooth transmission time delay.
The empty packet activation mechanism of bluetooth can increase Overall Power Consumption during bright screen, and a pair Bluetooth chip always meets the electric current increasing about 40mA together, but the general complete machine electric current of mobile phone when bright screen all can more than 250mA, and therefore the increment general impacts of 40mA are little.And the empty packet activation mechanism of bluetooth can effectively reduce Bluetooth transmission time delay, improves touch experience during user's bright screen.
The present invention is a kind of low time delay Bluetooth control mechanism.The start of bluetooth is realized from being dynamically connected by blue-tooth intelligence interconnection mechanism, Auto-reconnect after disconnecting, and the user being automatically greater than threshold values with bluetooth RSSI value wishes that the bluetooth equipment be connected connects, thus make bluetooth be in connection status always, improve the response speed of bluetooth.After successful connection, adopt the Bluetooth control mechanism of lower power consumption when mobile phone secretly shields, entering low-power consumption standby state when not having data to transmit, coming back to state of activation when there being data to transmit; Adopt the Bluetooth control mechanism compared with low transmission time delay when mobile phone bright screen, when not having data to transmit, keeping it to be in state of activation all the time by periodically sending empty packet, thus reducing Bluetooth transmission time delay, improving touch experience during user's bright screen.
Based on the Bluetooth interconnection method of above-mentioned mobile terminal, the embodiment of the present invention additionally provides a kind of Bluetooth interconnection system of mobile terminal, and as shown in Figure 4, described system comprises:
Broadcast module 10, for arranging the first bluetooth in the main part of mobile terminal, arranges the second bluetooth in the display section of mobile terminal; Described second bluetooth is in the pattern that can be found and the bluetooth title of broadcast correspondence and Bluetooth address; Specifically as described in step S100;
Interconnecting modules 20, for also detecting corresponding Bluetooth received signals intensity level by the Bluetooth broadcast near the first bluetooth inquiry, inquire at least one second bluetooth, judge whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then the first bluetooth connects to this second bluetooth transmission connection request signaling and the second bluetooth, and the Bluetooth address that record is corresponding; Specifically as described in step S200;
State change module 30, for after successful connection when do not have data or instruction need transmission time, the first bluetooth and this second bluetooth enter low-power consumption standby state, when have data or instruction need transmit time, the first bluetooth and this second bluetooth come back to state of activation; Specifically as described in step S300.
Further, described interconnecting modules 20 comprises:
Bluetooth inquiry unit, for also detecting corresponding Bluetooth received signals intensity level by the Bluetooth broadcast near the first bluetooth inquiry;
Title detecting unit, for judging whether the first bluetooth inquires bluetooth title corresponding at least one the second bluetooth, if yes, then performs intensity detection unit; If NO, then bluetooth inquiry unit is returned;
Intensity detection unit, for judging whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then performs connection establishment unit; If NO, then bluetooth inquiry unit is returned;
Connection establishment unit, for being connected to this second bluetooth transmission connection request signaling and the second bluetooth by the first bluetooth, and the Bluetooth address that record is corresponding.
Further, described intensity detection unit comprises:
Intensity judging unit, for judging whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then performs connection establishment unit; If NO, then bluetooth judging unit is performed;
Bluetooth judging unit, for judging whether the second bluetooth that the first bluetooth had connected, if yes, then performs connection establishment unit, if NO, then returns bluetooth inquiry unit.
Further, described signal strength threshold is-30dBm.About the unit that dBm is signal strength signal intensity, this is prior art, does not do too much description herein.
Further, the Bluetooth interconnection system of described mobile terminal, also comprises:
Active module, for after display section is lit, judge not have between the first bluetooth and this second bluetooth the duration whether overtime threshold value of transfer of data, if exceed, then the first bluetooth sends empty packet to this second bluetooth every the very first time, second bluetooth does not process when receiving described empty packet, keeps state of activation to make the first bluetooth and this second bluetooth always.
In sum, the Bluetooth interconnection method and system of a kind of mobile terminal provided by the invention, by arranging the first bluetooth in the main part of mobile terminal, arrange the second bluetooth in the display section of mobile terminal; Described second bluetooth is in the pattern that can be found and the bluetooth title of broadcast correspondence and Bluetooth address; Bluetooth broadcast near first bluetooth inquiry also detects corresponding Bluetooth received signals intensity level, inquire at least one second bluetooth, judge whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then the first bluetooth connects to this second bluetooth transmission connection request signaling and the second bluetooth, and the Bluetooth address that record is corresponding; After successful connection when not having data or instruction to need transmission, the first bluetooth and this second bluetooth enter low-power consumption standby state, and when having data or instruction to need transmission, the first bluetooth and this second bluetooth come back to state of activation; After making to start shooting, Bluetooth chip is in low-power consumption connection status always, effectively can improve the response speed of bluetooth data transmission and control command, can effectively reduce Bluetooth transmission time delay by the empty packet activation mechanism of bluetooth simultaneously, can be applicable to mobile phone wireless display and Wireless touch system, also can be applied to the higher Bluetooth control system of other requirement of real-times; Easy to use, interconnection is convenient, brings and facilitates greatly.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection range that all should belong to claims of the present invention.
Claims (10)
1. a Bluetooth interconnection method for mobile terminal, is characterized in that, comprising:
A, the first bluetooth is set in the main part of mobile terminal, the second bluetooth is set in the display section of mobile terminal; Described second bluetooth is in the pattern that can be found and the bluetooth title of broadcast correspondence and Bluetooth address;
Bluetooth broadcast near B, the first bluetooth inquiry also detects corresponding Bluetooth received signals intensity level, inquire at least one second bluetooth, judge whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then the first bluetooth connects to this second bluetooth transmission connection request signaling and the second bluetooth, and the Bluetooth address that record is corresponding;
After C, successful connection when not having data or instruction to need transmission, the first bluetooth and this second bluetooth enter low-power consumption standby state, and when having data or instruction to need transmission, the first bluetooth and this second bluetooth come back to state of activation.
2. the Bluetooth interconnection method of mobile terminal according to claim 1, is characterized in that, described step B specifically comprises:
Bluetooth broadcast near B1, the first bluetooth inquiry also detects corresponding Bluetooth received signals intensity level;
B2, judge whether the first bluetooth inquires bluetooth title corresponding at least one the second bluetooth, if yes, then perform step B3; If NO, then step B1 is returned;
B3, judge whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then perform step B4; If NO, then step B1 is returned;
B4, the first bluetooth send connection request signaling to this second bluetooth and the second bluetooth connects, and the Bluetooth address that record is corresponding.
3. the Bluetooth interconnection method of mobile terminal according to claim 2, is characterized in that, described step B3 also comprises:
B31, judge whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then perform step B4; If NO, then step B32 is performed;
B32, judge whether the second bluetooth that the first bluetooth had connected, if yes, then perform step B4, if NO, then return step B1.
4. the Bluetooth interconnection method of the mobile terminal according to any one of claim 1 ~ 3, is characterized in that, described signal strength threshold is-30dBm.
5. the Bluetooth interconnection method of mobile terminal according to claim 1, is characterized in that, also comprises after described step C:
D, after display section is lit, judge not have between the first bluetooth and this second bluetooth the duration whether overtime threshold value of transfer of data, if exceed, then the first bluetooth sends empty packet to this second bluetooth every the very first time, second bluetooth does not process when receiving described empty packet, keeps state of activation to make the first bluetooth and this second bluetooth always.
6. a Bluetooth interconnection system for mobile terminal, is characterized in that, comprising:
Broadcast module, for arranging the first bluetooth in the main part of mobile terminal, arranges the second bluetooth in the display section of mobile terminal; Described second bluetooth is in the pattern that can be found and the bluetooth title of broadcast correspondence and Bluetooth address;
Interconnecting modules, for also detecting corresponding Bluetooth received signals intensity level by the Bluetooth broadcast near the first bluetooth inquiry, inquire at least one second bluetooth, judge whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then the first bluetooth connects to this second bluetooth transmission connection request signaling and the second bluetooth, and the Bluetooth address that record is corresponding;
State change module, for after successful connection when do not have data or instruction need transmission time, the first bluetooth and this second bluetooth enter low-power consumption standby state, when have data or instruction need transmit time, the first bluetooth and this second bluetooth come back to state of activation.
7. the Bluetooth interconnection system of mobile terminal according to claim 6, is characterized in that, described interconnecting modules comprises:
Bluetooth inquiry unit, for also detecting corresponding Bluetooth received signals intensity level by the Bluetooth broadcast near the first bluetooth inquiry;
Title detecting unit, for judging whether the first bluetooth inquires bluetooth title corresponding at least one the second bluetooth, if yes, then performs intensity detection unit; If NO, then bluetooth inquiry unit is returned;
Intensity detection unit, for judging whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then performs connection establishment unit; If NO, then bluetooth inquiry unit is returned;
Connection establishment unit, for being connected to this second bluetooth transmission connection request signaling and the second bluetooth by the first bluetooth, and the Bluetooth address that record is corresponding.
8. the Bluetooth interconnection system of mobile terminal according to claim 7, is characterized in that, described intensity detection unit comprises:
Intensity judging unit, for judging whether that the Bluetooth received signals intensity level of the second bluetooth is greater than signal strength threshold, if yes, then performs connection establishment unit; If NO, then bluetooth judging unit is performed;
Bluetooth judging unit, for judging whether the second bluetooth that the first bluetooth had connected, if yes, then performs connection establishment unit, if NO, then returns bluetooth inquiry unit.
9. the Bluetooth interconnection system of the mobile terminal according to any one of claim 6 ~ 8, is characterized in that, described signal strength threshold is-30dBm.
10. the Bluetooth interconnection system of mobile terminal according to claim 6, is characterized in that, also comprise:
Active module, for after display section is lit, judge not have between the first bluetooth and this second bluetooth the duration whether overtime threshold value of transfer of data, if exceed, then the first bluetooth sends empty packet to this second bluetooth every the very first time, second bluetooth does not process when receiving described empty packet, keeps state of activation to make the first bluetooth and this second bluetooth always.
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