CN1716806B - Method for optimizing transmission power of network - Google Patents
Method for optimizing transmission power of network Download PDFInfo
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- CN1716806B CN1716806B CN2005100819095A CN200510081909A CN1716806B CN 1716806 B CN1716806 B CN 1716806B CN 2005100819095 A CN2005100819095 A CN 2005100819095A CN 200510081909 A CN200510081909 A CN 200510081909A CN 1716806 B CN1716806 B CN 1716806B
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- 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
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
An apparatus and a method for performing a protocol that optimizes a transmission power in a network. The apparatus and the method perform a protocol that optimizes the transmission power in the network for point-to-multipoint communication (1:N). The apparatus includes a communication unit for sending and receiving a data packet through the air, and a control unit that outputs a control signal for controlling the transmission power according to connection information of the data packet received through the communication unit. The connection information includes a reception signal strength and/or link quality information. Since the transmission power is adjustable, communication is carried out among nodes of the network with an adequately minimum power consumption and a proper communication quality.
Description
Present patent application be that 08 month 10 days calendar year 2001, application number are 01125532.3 the applying date, exercise question divides an application for the patent application of " apparatus and method of optimizing network transmitting power ".
Technical field
The present invention relates to carry out the method for the agreement of through-put power in the peak optimizating network, and be particularly related to the method for the agreement of carrying out optimization point-to-multipoint communication (1:N) transmission through network power.The present invention is based on korean patent application No.2000-46810, No.2000-66863 and No.2001-10982, these patent applications are comprised in this incorporated by reference.
Background technology
Wireless communication technology is used for the wireless wave of transfer of data.Known road constitute the radio communication device of wireless communication system removable, be easy to carry and simply.In addition, because wireless communication system can irrespectively transmit the such fact of data with customer location, wireless communication system is used for the more field of wide region.The example of a wireless communication system is WLAN (LAN), and it has remedied the shortcoming of wired lan through the advanced wireless communication technology.Because WLAN can extend to the zone that wired lan possibly reach hardly, WLAN has flexibility and the advantage that (installability) can be installed.
Simultaneously, wireless communication system uses and concentrates transmitted in packets and distribute packets transmission.Concentrated block transmission method can be only through being used between terminal node and the Centroid or node is used to the relaying of a Centroid of communicating by letter between another node.Simultaneously, according to the distribution transmission method of the comprehensive characteristic of using wireless system, directly XM does not need the relaying of an independent Centroid to the communication between another node.Owing to can guarantee mobility, the distribution transmission method is effective especially in the network that is made up of the portable terminal such as individual special network (personal Ad-hoc Network).
The portable terminal that in wireless network, uses provides power from battery.Because there have been a lot of suggestions in the limited life-span of battery, through the transmission power information between the switching node, between node, transmits data with minimum power.At United States Patent(USP) No. 5,450, can find an example in 616, at United States Patent(USP) No. 5,465, can find another example in 398 (WO 95/10142).
According to the United States Patent(USP) No. 5 that is entitled as " method and apparatus (Method and Apparatus for Power Control in a Wireless LAN) of power control in WLAN "; 450; 616; At first, sending node sends a packet to main equipment, and this packet comprises the transmission power information that is used in the initial packet transmission of WLAN.Power information that the main equipment utilization receives and signal quality data are calculated the recommended value that is used for through-put power.Then, main equipment sends result calculated to slave unit.Correspondingly, sending node is adjusted transmitted in packets power according to the recommended value of this calculating that is used for through-put power.
According to the United States Patent(USP) No. 5 that is entitled as " the automated power level control (Automatic Power LevelControl of a Packet Communication Link) of transmitted in packets link "; 465; 398 (WO98/10142); The reception signal strength indicator (RSSI) that destination node will receive signal compares with the minimum intensity of storing, and the notification source number of nodes is poor.Source node adjustment through-put power is so that satisfy predetermined threshold in the temporal moving average of received quantity difference.That is, according to the comparative result that receives RSSI of signals and minimum intensity, the power level of adjustment source node.
According to United States Patent(USP) No. 5,450,616 and No.5,465,398, in the point to point link between two nodes, can suitably adjust through-put power.Yet, under the situation of the point-to-multipoint communication of in WLAN, expecting usually, can not optimize transmissions power through the scheme of above-mentioned two patents suggestion.This is because the power minimum of all wireless devices is difficult in only keeping communicating by letter through increase or minimizing through-put power.In other words, the scheme proposals of above-mentioned two patents is with reference to minimum optimal transmission state optimization through-put power.
The example that is used for the point-to-multipoint communication method of WLAN is a Bluetooth technology.Bluetooth technology is a kind of wireless communications method, does not need centralized management, and can need not to be connected by cable in short range distance, carrying out transfer of data between the bluetooth embedding equipment.Connect although bluetooth can provide point-to-point or put multiple spot, owing to lack centralized control structure, it is difficult that Bluetooth technology is used in the network.In rete cutaneum network (piconet), connect one or more unit of sharing same channel.Correspondingly, in the rete cutaneum network, a bluetooth flush mounting is as main equipment, and other device is as slave unit.In the network of above-mentioned structure, main equipment must guarantee to implement communicating by letter of slave unit with suitable minimum transmission power with constant adequate communication quality.
Summary of the invention
The purpose of this invention is to provide a kind of method, be used to carry out the agreement of optimize transmissions power, so that with suitable communication quality and suitable minimum transmission power, executive communication between the node of point-to-multipoint communication.
In order to realize above-mentioned purpose; According to an aspect of the present invention; The invention provides the method for through-put power in a kind of peak optimizating network; The method comprising the steps of: (I) through the link information that relatively receives from one of a plurality of slave units with can accept quality, confirm the benchmark through-put power between main equipment and a plurality of slave unit; (II) through-put power between optimization main equipment and a plurality of slave unit, wherein, said link information comprises link quality information, and said step (I) comprises substep: (a) check current through-put power; (b) initialization slave unit counter variable N, and the sum of record slave unit; (c) receive link quality information from N slave unit; (d) link quality information that relatively receives from substep (c) with can accept quality; (e) when link quality information equals to accept quality in substep (d), write down current through-put power, and advance to through-put power optimization step (II) as the benchmark through-put power; (f) be lower than to accept quality the time when link quality information in substep (d), obtain the benchmark through-put power through increasing current through-put power, and advance to through-put power optimization step (II); (g) be higher than to accept quality the time when link quality information in substep (d), obtain the benchmark through-put power through reducing current through-put power, and advance to through-put power optimization step (II).
In order to realize above-mentioned purpose; According to another aspect of the present invention; The present invention also provides the method for the through-put power of the network that a kind of optimization main equipment leaves, and the method comprising the steps of: (A) based on the link information that receives from a plurality of slave units that constitute network, produce candidate main equipment information; (B) main equipment of detection deviated from network; (C) the candidate main equipment sequence of information that produces according to step (A) is confirmed a candidate main equipment; (D) confirm benchmark through-put power between candidate main equipment and a plurality of slave unit; (E) transmission between optimization candidate main equipment and a plurality of slave unit.
Description of drawings
With reference to the following detailed description that combines accompanying drawing, the present invention more comprehensively to be estimated with much attendant advantages will be obvious, and it is understood better, identical label is represented same or analogous parts in the accompanying drawing.
Fig. 1 is the device block diagram according to optimizing network transmitting power of the present invention;
Fig. 2 is the method flow diagram according to the main equipment of through-put power in the peak optimizating network of first preferred embodiment of the invention;
Fig. 3 is the method flow diagram according to the slave unit of through-put power in the peak optimizating network of second preferred embodiment of the invention;
Fig. 4 is the flow chart according to through-put power in the peak optimizating network of third preferred embodiment of the invention;
Fig. 5 A is the substep flow chart that the minimum transmission power of Fig. 4 is confirmed step;
Fig. 5 B is the flow chart of substep of minimizing self adaptation (adaptation) step of Fig. 4;
Fig. 6 is the optimized substep flow chart of the through-put power of Fig. 4;
Fig. 7 is the method flow diagram according to through-put power in the peak optimizating network of four preferred embodiment of the invention;
Fig. 8 is the method flow diagram according to through-put power in the peak optimizating network of fifth preferred embodiment of the invention.
Embodiment
To illustrate and describe the preferred embodiments of the present invention now, and identical parts all give identical label, and omitted any unnecessary explanation as far as possible.
With reference to Fig. 1, comprise: communication unit 10 with transmitting element 2 and receiving element 4 according to the device of through-put power in the peak optimizating network of the present invention; Power measurement unit 20; Power adjustment unit 30; Control unit 40; With memory 50.
The transmitted power of power adjustment unit 30 adjustment transmitting elements 2.The transmission power value of memory 50 each slave unit of storage.
Quality of connection measuring unit 32 is measured the quality that is connected with a certain slave unit based on the received power of being divided into groups by power measurement unit 20 data measured and the accepting state parameter of packet.The accepting state parameter that is used for measuring the packet of slave unit quality of connection comprises: data error rate, error correction rate, bandwidth loss and delay.In addition, in the present embodiment the quality of connection of this measurement is defined as the reception quality of connection.
Quality of connection comparing unit 34 relatively receives quality of connection and predetermined reference connection quality.
The power adjustment confirms that unit 36 according to the result that the calculating from quality of connection comparing unit 34 obtains, determines whether to increase or reduce the through-put power of slave unit.
In addition, have only when the receiving element 4 that passes through request measurement through-put power receives message, control unit 40 is measured the received power and reception quality of connection from the packet of power measurement unit 20 receptions.
Simultaneously, when through communication unit 10 when a certain slave unit receives the packet of request adjustment through-put power, according to through-put power adjustment request, control unit 40 updates stored in the transmission power value in the memory 50 for the request slave unit.When sending packet, control unit 40 is adjusted control signal to the through-put power of the transmission power value that power adjustment unit 30 output reflections are upgraded.
In addition, control unit 40 can broadcast the through-put power measurement request message with a certain cycle period, so that receive through-put power adjustment request message.
To the method according to through-put power in the peak optimizating network of the present invention be described with reference to Fig. 2 to 8.
At first, will the method according to through-put power in the peak optimizating network of first preferred embodiment of the invention be described with reference to Fig. 2.
At first, receive packet (step S1) through receiving element.Power measurement unit 20 is measured the received power (step S2) of the packet that receives.
Receive quality of connection measuring unit 32 based on the received power of dividing into groups and the accepting state parameter of packet, measure the quality of the reception connection of slave unit by power measurement unit 20 data measured.
Quality of connection comparing unit 34 calculates the difference K (step S4) that receives between quality of connection value and the reference connection mass value.
With reference to the difference K that obtains from comparison step S4, determine whether that sender's slave unit of request data packet increases or reduce through-put power (step S5).
According to confirming the result that step S5 obtains through through-put power increase/minimizing, through-put power adjustment request message transmission is to slave unit (step S6).
Through-put power increase/minimizing step S5 comprises following substep.
At first, confirm the absolute value of quality of connection comparative result K | whether K| is lower than preset power adjustment unit (step S5-1).
If the absolute value of quality of connection comparative result K | K| is lower than the preset power adjustment unit, confirms that quality of connection comparative result K is whether on zero (0) (step S5-2).If keep the current through-put power of slave unit, and finish the through-put power optimization procedure.
Simultaneously, if the quality of connection comparative result is lower than zero (0), control unit 40 sends through-put power to this slave unit increases request message (step S6-2).
Simultaneously, if at the absolute value of S5-1 quality of connection comparative result K | K | be higher than the preset power adjustment unit, confirm that quality of connection comparative result K is whether on zero (0) (step S5-1a).If control unit 40 sends through-put power and reduces request message to slave unit (step S6-1).
If be lower than zero (0) at S5-1a quality of connection comparative result K, control unit 40 sends through-put power to slave unit increases request message (step S6-2).
Correspondingly; If the absolute value of quality of connection comparative result K | K| is equal to or greater than the preset power adjustment unit; And greater than zero (0), through-put power reduces request message and sends to slave unit at S5-1a quality of connection comparative result K, up to absolute value | and K| falls into the scope of preset power adjustment unit.
According to first embodiment on the other hand, have only when the message of received power is measured in the request of receiving, just measure received power or receive quality of connection (S2 and S3).
Perhaps, main equipment can not carried out comparison step, and simply sends measurement result to slave unit.Slave unit can be carried out comparison step then, and correspondingly adjusts power.Because a slave unit can calculate all measured values that send from each main equipment, with regard to load distribution, this method is than more efficient when main equipment is carried out comparison step.
With reference to Fig. 3, the method according to the slave unit of second preferred embodiment of the invention optimizing network transmitting power will be described below.
When receiving through-put power adjustment request from a certain main equipment # 1, whether slave unit check through-put power is set to maximum or minimum, and just can not adjust through-put power (step S12) like this.
When confirming that at S12 the through-put power adjustment is impossible, slave unit sends the impossible message of through-put power adjustment to through-put power adjustment request message main equipment #1 (step S12-1).
When confirming to carry out the through-put power adjustment at S12, slave unit upgrades before being stored in the transmission power value (step S13) in the memory 50 according to the request of main equipment # 1.
After accomplishing S13, slave unit sends packet (step S14) with the through-put power of upgrading.
At this, may further include another step, broadcast the through-put power measurement request message with predetermined loop cycle and be used to receive through-put power adjustment request message.
According to second embodiment on the other hand, in the time can not adjusting through-put power respectively,, can adjust through-put power, not make quality of connection decline simultaneously with other slave unit to the slave unit that connects with maximal received power.In addition, when reducing request from non-through-put power with reference to slave unit, main equipment # 1 sends the impossible message of through-put power adjustment to non-with reference to slave unit.
With reference to Fig. 4 to 6, the method according to the through-put power between main equipment and the slave unit in the 3rd preferred embodiment peak optimizating network of the present invention will be described below.
Method according to the through-put power between main equipment and the slave unit in the 3rd preferred embodiment peak optimizating network of the present invention comprises: the benchmark through-put power is confirmed step (step S440) and through-put power optimization step (step S480).
The benchmark through-put power confirm step S440 through the link information that relatively receives from slave unit with can accept quality Q, confirm the benchmark through-put power between main equipment and the slave unit.Link information comprises the link quality information Link_Quality between main equipment and the slave unit, direction, and distance etc., in this embodiment, link quality information will be used as the example of link information.
Through-put power in the through-put power optimization step S480 peak optimizating network between main equipment and the slave unit.
The network manager of main equipment is according to command lanuage HCI, and ' Adapt_Transmit_Power ' carries out the benchmark through-put power and confirm step S440.
At S440, network manager is through using the HCI command lanuage, ' Read_Transmit_Power ' that in Bluetooth specification, provides, the current through-put power (step S410) of check main equipment.
Then, initialization slave unit counter variable N, and sum (T) the performance variable initialization (step S412) of slave unit through the record current network.In the third embodiment of the present invention is described, suppose that the initial value of slave unit counter variable N is ' 1 ', and the total T of slave unit is 5.
After completing steps S412, network manager is carried out the first link quality information receiving step (S414) through receiving link quality information (Link_Quality) from first slave unit.
Below, carry out first and compare (S416), that is, compare the link quality information (Link_Quality) that in the first link quality information receiving step (S414), receives and can accept quality Q.During the structure of rete cutaneum network, confirm in advance to accept quality Q.
According to the link quality information (Link_Quality) that receives with can accept the comparative result between the quality Q, the first comparison step S416 has following three kinds of situation:
< situation 1 >
When in S416; When the link quality information (Link_Quality) that receives from first slave unit equals to accept quality Q; Carry out the first through-put power recording step (S418); That is, the current through-put power of check is recorded as benchmark through-put power (RP), and process moves to through-put power optimization step (S480).
< situation 2 >
When in S416; The link quality information (Link_Quality) that receives from first slave unit is lower than in the time of can accepting quality Q; Main equipment is carried out increases the self adaptation step, and wherein, main equipment increases by a scheduled volume through the through-put power that will arrive first slave unit and obtains benchmark through-put power (RP).
In increasing the self adaptation step, main equipment is carried out maximum transmission power comparison step (S419), wherein, and more current through-put power of main equipment (PP) and maximum transmission power (MP).
When the current through-put power PP of S419 equals maximum transmission power MP, the failure of expression through-put power self adaptation, and process finishes (step S427).
Simultaneously, if be different from maximum transmission power MP at the current through-put power PP of S419, carrying out first through-put power increases step (S420), that is, current through-put power PP increases by a predetermined step-length.
When accomplishing first through-put power increase step (S420), main equipment is carried out first link quality information receiving step (S422) again through receive link quality information (Link_Quality) again from first slave unit.
Below, at second comparison step (S424), the link quality information (Link_Quality) that relatively in first link quality information receiving step again (S422), receives again from first slave unit with can accept quality Q.
If in second comparison step (S424), the link quality information (Link_Quality) that receives again is lower than can accept quality Q, carries out through-put power upper limit checking procedure (S426), that is, the through-put power of increase (IP) compares with maximum transmission power MP.
If current through-put power PP is different from maximum transmission power MP in S426, carrying out first through-put power increases step (S420).
Yet,, carry out self adaptation failure indication step (S427) if equal maximum transmission power MP at the current through-put power PP of S426.
< situation 3 >
When in S416, the link quality information (Link_Quality) that receives from first slave unit is higher than in the time of can accepting quality Q, and main equipment is carried out and reduced self adaptation step (S430), and wherein, main equipment obtains benchmark through-put power (RP) through reducing current through-put power PP.
Reduce self adaptation step (S430) and comprise that minimum transmission power confirms step (S431); Through-put power reduces step (S432); Second link quality information is receiving step (S433) again; The 3rd comparison step (S434); Second through-put power increases step (S436); With the 4th comparison step (S438), shown in Fig. 5 B.
Minimum transmission power is confirmed more current through-put power PP of step (S431) and minimum transmission power MinP.If current through-put power PP equals minimum transmission power MinP, process moves to the first through-put power recording step (S418).
If be different from minimum transmission power MinP at the current through-put power PP of S431, carry out power and reduce step (S432), reduce the through-put power of N slave unit.
After through-put power reduces step S432, carry out second link quality information receiving step (S433) again, wherein receive link quality information (Link_Quality) again from the N slave unit.
In second link quality information receiving step again (S433) afterwards, carry out the 3rd comparison step (S434), the link quality information (Link_Quality) that receives from N slave unit equally with can accept the quality Q comparison.
When the reception link quality information again (Link_Quality) of the 3rd comparison step (S434) is lower than can accept quality Q the time; Carry out second through-put power and increase step (S436); Increase the through-put power DP that reduces, and move to through-put power optimization step (S480).
When the reception link quality information again (Link_Quality) of the 3rd comparison step (S434) is not less than can accept quality Q the time, carry out the 4th comparison step (S438).In the 4th comparison step (S438); Current through-put power PP and minimum transmission power MinP are relatively; And if current through-put power PP equals minimum transmission power MinP; Carry out benchmark through-put power recording step (S418), and if current through-put power PP is not equal to minimum transmission power MinP, execution through-put power minimizing step (S432).
Through-put power optimization step (S480) comprising: variable increases step (S452); The second link quality information receiving step (S454); The 5th comparison step (S456); The 3rd through-put power increases step (S458); The second through-put power recording step (S460); Through-put power optimization step (S462), as shown in Figure 6.
More particularly, after definite benchmark through-put power, slave unit counter variable N increases the through-put power (step S452) with the optimization slave unit.
Below, main equipment is carried out the second link quality information receiving step (S454), receives link quality information (Link_Quality) from the N slave unit.
Then, carry out the 5th comparison step (S456), the link quality information (Link_Quality) that relatively receives from the N slave unit at the second link quality information receiving step (S454) with can accept quality Q.
If at the 5th comparison step (S456); The link quality information (Link_Quality) that receives from the N slave unit is lower than can accept quality Q; Main equipment increases by a predetermined unit through the through-put power with the N slave unit; And carry out the second link quality information receiving step (S454), carrying out the 3rd through-put power increases step (S458).
Simultaneously; If at the 5th comparison step (S456); The link quality information of N slave unit (Link_Quality) is equal to or greater than can accept quality Q, through the through-put power AP that is fit to is recorded as benchmark through-put power RP (step S460), carries out reference power recording step (S460).
Below, carry out the through-put power optimization and confirm step (S462), that is, and check whether for all slave unit optimizations be fit to through-put power AP.
Confirm step (S462) in the through-put power optimization, the total T of slave unit counter variable N and slave unit relatively.If the total T of slave unit is different from slave unit counter variable N, performance variable increases step (S452), and if the total T of slave unit equals slave unit counter variable N, end through-put power optimization step (S480).
Through the HCI command lanuage, " Write_Transmit_Power " carries out through-put power recording step (S460).
With reference to Fig. 7, with the method for describing according to through-put power in the peak optimizating network of four preferred embodiment of the invention.
Method according to through-put power in the peak optimizating network of four preferred embodiment of the invention comprises: slave unit selects step (S710) and through-put power to confirm step (S730).
Slave unit selects step (S710) based on the link information that receives from a plurality of slave units that constitute network, selects to be used for the slave unit that through-put power is confirmed.
Slave unit selects step (S710) to comprise following substep:
At first, carry out link information receiving step (S712), that is, and from each slave unit reception link information of network.
Then, carry out slave unit and confirm step (S714) in proper order, that is,, confirm the order of each slave unit according to the intensity of the link information that receives at link information receiving step (S712).
According to the order of the slave unit of confirming at S714, the slave unit with minimum intensity is confirmed as and is used for the slave unit (step S716) that through-put power is confirmed.
Based on the link information that receives from the slave unit of selecting at slave unit to select the step S710 with can accept the comparison between the quality Q, through-put power confirms that step (S730) confirms through-put power.
Through-put power confirms that step (S730) comprises following substep:
At first, check current through-put power (step S732).
Then, confirm the link information of the slave unit of selection in the step (S716) and can accept quality Q relatively (step S734) at slave unit.
In situation 1, when the link information of selected slave unit in comparison step (S734) equaled to accept quality Q, current through-put power was recorded as suitable through-put power (S736).
In situation 2, when the link information of selected slave unit in comparison step (S734) is lower than can accept quality Q the time, carrying out increases self adaptation step (S738),, obtains the through-put power that is fit to through increasing current through-put power that is.
In situation 3, when the link information of selected slave unit in comparison step (S734) is higher than can accept quality Q the time, carry out and reduce self adaptation step (S740), that is, obtain the through-put power that is fit to through reducing current through-put power.
According to the 4th preferred embodiment of the present invention, for slave unit optimize transmissions power with minimum link information intensity.Correspondingly, the 4th embodiment will need not confirm the process of step such as the benchmark through-put power of the 3rd embodiment.
To describe with reference to Fig. 8, under the situation that main equipment leaves, according to the method for through-put power in the peak optimizating network of fifth preferred embodiment of the invention.
In normal running, main equipment is periodically set the order of the slave unit that is used for a candidate main equipment, so when current main equipment deviated from network, allow slave unit to make up a new network.
Through-put power optimal method under the situation that main equipment leaves comprises: candidate main equipment information generating step (S810); Main equipment leaves and detects step (S820); The candidate main equipment is confirmed step (S830); The benchmark through-put power is confirmed step (S840) and through-put power optimization step (S860).
Candidate main equipment information generating step (S810) produces candidate main equipment information based on the link information that the slave unit from network receives.When producing candidate main equipment information, main equipment also receives link information from slave unit, and whether all slave units of network for confirmation are in radio transmission range.
Link information can be to receive signal strength indicator (RSSI) and/or link quality information (Link_Quality).Detect RSSI and notice main equipment from slave unit.RSSI is with closely related apart from the distance of main equipment.Based on link quality information (Link_Quality), can obtain the data error rate between main equipment and the slave unit.Correspondingly, link quality information (Link_Quality) depends on some factor, such as barrier that occurs between the distance between main equipment and the slave unit, main equipment and the slave unit etc.Slave unit is through using the HCI order of Bluetooth specification regulation, and " Read-RSSI " knows the intensity that receives signal from main equipment.In addition, through using the HCI order, " Get_Link_Quality ", slave unit can obtain by the link quality information of a byte numeral (Link_Quality).The intensity and the link quality information (Link_Quality) that receive signal are high more, and state is good more.
Based on the order of highest signal strength and/or quality of connection, main equipment confirms to be used for the order of the slave unit of candidate main equipment.Correspondingly, under the situation of main equipment deviated from network, become new main equipment near the slave unit of main equipment and have higher possibility, and the network of reconstruct and other slave unit.
Main equipment broadcasts the order of the slave unit that is used for the candidate main equipment to slave unit through broadcast channel.Seeing that slave unit possibly change the fact of their position, main equipment upgrades the order of candidate main equipment periodically.
At main equipment owing to several kinds of reasons such as power supply exhausts, the having a mind under the situation of deviated from network such as operation of user, according to the order of candidate main equipment, for new main equipment reconstructed network.
After producing candidate main equipment information, carry out main equipment and leave and detect step (S820), detect whether deviated from network of main equipment.At first detect leaving of main equipment through the disconnection between main equipment and the slave unit.According to bluetooth specification version 1.0, the bluetooth flush mounting set to connect watchdog timer, is used for (for example, 0.625ms-40.9sec) checking connection status between them with the predetermined period circulation.When detecting disconnection, bluetooth embeds equipment and breaks off (Disconnection_Complete) incident of completion to the main frame report.
Can confirm to be used to check the loop cycle of the connection status between main equipment and the slave unit according to connecting watchdog timer.In the loop cycle of confirming like this, slave unit is periodically checked the connection status with main equipment.
When confirming the main equipment deviated from network, carry out the candidate main equipment and confirm step (S830).
Slave unit is assumed to new main equipment with the first candidate main equipment, and sets up and being connected of new main equipment, and structure one new network.
New main equipment is set up and being connected of the slave unit of network, and affirmation whether all slave units are connected.If there is any slave unit that is not connected with new main equipment, main equipment is broadcasted the information that does not connect slave unit to connecting slave unit.
If the first candidate main equipment is deviated from network also, according to the order of confirming, next slave unit becomes the new main equipment of network.
When confirming new main equipment, new main equipment and slave unit are confirmed the benchmark through-put power (step S840) between them.In step S840, the benchmark through-put power can be that maximum transmission power also can be a minimum transmission power.When in step S840; When the benchmark through-put power is maximum transmission power; The process of minimizing self adaptation step that can be through being similar to the 3rd preferred embodiment; Optimize transmissions power promptly, can obtain optimal transmission power through current through-put power being reduced to the satisfied degree that can accept quality Q.
Simultaneously; If the benchmark through-put power is a minimum transmission power, the process of increase self adaptation step that can be through being similar to the 3rd preferred embodiment, optimize transmissions power; That is, can obtain optimal transmission power through current through-put power being increased to the satisfied degree that can accept quality Q.
The through-put power recording step writes down current through-put power in the booking situation position of bluetooth module, and the benchmark that the current through-put power of service recorder increases or reduces as through-put power finishes up to the through-put power optimization step.
As stated, according to the present invention, can peak optimizating network in through-put power between main equipment and the slave unit.In addition, if the main equipment deviated from network, a candidate main equipment is set to the new main equipment that makes up a new network.In addition, the through-put power between new main equipment of optimization and the slave unit.Correspondingly, the through-put power through the adjustment network when keeping suitable communication quality, can reduce through-put power consumption.
Although described the preferred embodiments of the present invention, understand the present invention and should not be limited to these preferred embodiments, but in essence that does not break away from the accompanying claims definition and scope, can seemingly carry out various modifications and variation by those skilled in the art.
Claims (11)
1. the method for through-put power in the peak optimizating network comprises step:
(I) through the link information that relatively receives from one of a plurality of slave units with can accept quality, confirm the benchmark through-put power between main equipment and a plurality of slave unit; With
(II) through-put power between optimization main equipment and a plurality of slave unit,
Wherein, said link information comprises link quality information, and
Said step (I) comprises substep:
(a) check current through-put power;
(b) initialization slave unit counter variable N, and the sum of record slave unit;
(c) receive link quality information from N slave unit;
(d) link quality information that relatively receives from substep (c) with can accept quality;
(e) when link quality information equals to accept quality in substep (d), write down current through-put power, and advance to through-put power optimization step (II) as the benchmark through-put power;
(f) be lower than to accept quality the time when link quality information in substep (d), obtain the benchmark through-put power through increasing current through-put power, and advance to through-put power optimization step (II); With
(g) be higher than to accept quality the time when link quality information in substep (d), obtain the benchmark through-put power through reducing current through-put power, and advance to through-put power optimization step (II).
2. with host controller interface HCI order, ' Adapt_Transmit_Power ' carries out the method for claim 1, wherein said step (I) through network manager.
3. the method for claim 1, wherein said through-put power increases and reduces the order through host controller interface HCI, and ' Write_Transmit_Power ' carries out.
4. the method for claim 1, wherein said substep (f) comprises substep:
(f-1) more current through-put power and maximum transmission power;
(f-2) when current through-put power is different from maximum transmission power in substep (f-1), increase current through-put power;
(f-3) in substep (f-2), increase after the current through-put power, from the N slave unit, receive link quality information again;
(f-4) link quality information that relatively in substep (f-3), receives again with can accept quality; And when the link quality information that receives again is equal to or higher than can accept quality the time; Current through-put power after record increases is as the benchmark through-put power, and advances to through-put power optimization step (II);
(f-5) be lower than to accept quality the time when the link quality information that in substep (f-4), receives again; Current through-put power and maximum transmission power after relatively increasing; And if the current through-put power after increasing is different from maximum transmission power, advance to substep (f-2); With
When (f-6) the current through-put power after in substep (f-5), increasing equals maximum transmission power, or when current through-put power equals maximum transmission power in substep (f-1), adjustment failure of indication through-put power and the adjustment of end through-put power.
5. the method for claim 1, wherein substep (g) comprises substep:
(g-1) more current through-put power and minimum transmission power, and when current through-put power equals minimum transmission power, write down current through-put power as the benchmark through-put power, and advance to through-put power optimization step (II);
(g-2) when current through-put power is different from minimum transmission power in substep (g-1), reduce the through-put power of N slave unit;
(g-3) from N slave unit, receive link quality information again;
(g-4) link quality information that relatively in substep (g-3), receives again from N slave unit and can accept quality;
(g-5) be lower than to accept quality the time when the link quality information that in substep (g-4), receives again, increase the current through-put power after reducing, and advance to through-put power optimization step (II); With
(g-6) be not less than to accept quality the time when the link quality information that receives again; More current through-put power and minimum transmission power; And when current through-put power equals minimum transmission power, write down current through-put power, and advance to through-put power optimization step (II) as the benchmark through-put power; Or when current through-put power is different from minimum transmission power, obtain the benchmark through-put power through reducing current through-put power.
6. the method for claim 1, wherein said through-put power optimization step (II) comprises following substep:
(II-1) increase slave unit counter variable N;
(II-2) receive link quality information from N slave unit;
(II-3) link quality information that relatively receives with can accept quality;
(II-4) be lower than to accept quality the time when the link quality information that receives from N slave unit at substep (II-3), increase through-put power and receive link quality information;
(II-5) be equal to or higher than can accept quality the time when the link quality information that receives from N slave unit at substep (II-3), write down current through-put power as the benchmark through-put power and with this benchmark through-put power as suitable through-put power; With
(II-6) relatively slave unit counter variable N and slave unit are total; And; If the slave unit sum is different from the slave unit counter variable, then increases counter variable and proceed to step (II-2), perhaps; If the slave unit sum equals the slave unit counter variable, then finish the optimization of through-put power.
7. the method for the through-put power of the network that leaves of an optimization main equipment comprises step:
(A), produce candidate main equipment information based on the link information that receives from a plurality of slave units that constitute network;
(B) main equipment of detection deviated from network;
(C) the candidate main equipment sequence of information that produces according to step (A) is confirmed a candidate main equipment;
(D) confirm benchmark through-put power between candidate main equipment and a plurality of slave unit; With
(E) transmission between optimization candidate main equipment and a plurality of slave unit.
8. method as claimed in claim 7, wherein, the said benchmark through-put power in step (D) is a maximum transmission power.
9. method as claimed in claim 8, wherein, said step (E) obtains to satisfy the through-put power that is fit to that can accept quality through reducing the benchmark through-put power.
10. method as claimed in claim 7, wherein, the said benchmark through-put power in step (D) is a minimum transmission power.
11. method as claimed in claim 10, wherein, said step (E) obtains to satisfy the through-put power that is fit to that can accept quality through increasing the benchmark through-put power.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
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| KR20000046810 | 2000-08-12 | ||
| KR46810/00 | 2000-08-12 | ||
| KR66863/00 | 2000-11-10 | ||
| KR20000066863 | 2000-11-10 | ||
| KR10-2001-0010982A KR100494070B1 (en) | 2000-08-12 | 2001-03-03 | Apparatus and method for optimizing transmit power of wireless personal ad-hoc network |
| KR10982/01 | 2001-03-03 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNB011255323A Division CN100471142C (en) | 2000-08-12 | 2001-08-10 | Device and method for optimizing network transmitting power |
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| CN1716806A CN1716806A (en) | 2006-01-04 |
| CN1716806B true CN1716806B (en) | 2012-03-21 |
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| CN200510081907.6A Expired - Lifetime CN1722634B (en) | 2000-08-12 | 2001-08-10 | Apparatus and method for controlling transmission device of in wireless network |
| CN2005100819080A Expired - Lifetime CN1716805B (en) | 2000-08-12 | 2001-08-10 | Method for optimizing transmission power of network |
| CN2005100819095A Expired - Lifetime CN1716806B (en) | 2000-08-12 | 2001-08-10 | Method for optimizing transmission power of network |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200510081907.6A Expired - Lifetime CN1722634B (en) | 2000-08-12 | 2001-08-10 | Apparatus and method for controlling transmission device of in wireless network |
| CN2005100819080A Expired - Lifetime CN1716805B (en) | 2000-08-12 | 2001-08-10 | Method for optimizing transmission power of network |
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| CN (3) | CN1722634B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022265544A1 (en) * | 2021-06-17 | 2022-12-22 | Telefonaktiebolaget Lm Ericsson (Publ) | Limiting interference in a wireless point-to-point or point-to-multipoint network |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102131070A (en) * | 2011-01-18 | 2011-07-20 | 中兴通讯股份有限公司 | Visual communication realization method and terminal |
| CN106332132B (en) * | 2015-07-03 | 2021-05-04 | 中兴通讯股份有限公司 | Communication terminal and method for self-adaptive Bluetooth performance adjustment |
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| CN1115555A (en) * | 1994-04-27 | 1996-01-24 | Ntt移动通信网株式会社 | Transmission power control method in CDMA system and mobile station using the same |
| CN1132585A (en) * | 1993-09-03 | 1996-10-02 | 诺基亚电信公司 | Method for adjusting transmission power in a radio sytem, and an exchange |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH02312492A (en) * | 1989-05-29 | 1990-12-27 | Nec Corp | Channel assignment method in mobile communication system and learning system for base station arrangement information |
| JP3039402B2 (en) * | 1996-12-05 | 2000-05-08 | 日本電気株式会社 | Transmission power control device for mobile communication system |
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- 2001-08-10 CN CN200510081907.6A patent/CN1722634B/en not_active Expired - Lifetime
- 2001-08-10 CN CN2005100819080A patent/CN1716805B/en not_active Expired - Lifetime
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1132585A (en) * | 1993-09-03 | 1996-10-02 | 诺基亚电信公司 | Method for adjusting transmission power in a radio sytem, and an exchange |
| CN1115555A (en) * | 1994-04-27 | 1996-01-24 | Ntt移动通信网株式会社 | Transmission power control method in CDMA system and mobile station using the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022265544A1 (en) * | 2021-06-17 | 2022-12-22 | Telefonaktiebolaget Lm Ericsson (Publ) | Limiting interference in a wireless point-to-point or point-to-multipoint network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1722634A (en) | 2006-01-18 |
| CN1716805B (en) | 2010-06-16 |
| CN1722634B (en) | 2015-04-29 |
| CN1716806A (en) | 2006-01-04 |
| CN1716805A (en) | 2006-01-04 |
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