CN1716805B - Method for optimizing transmission power of network - Google Patents
Method for optimizing transmission power of network Download PDFInfo
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- CN1716805B CN1716805B CN2005100819080A CN200510081908A CN1716805B CN 1716805 B CN1716805 B CN 1716805B CN 2005100819080 A CN2005100819080 A CN 2005100819080A CN 200510081908 A CN200510081908 A CN 200510081908A CN 1716805 B CN1716805 B CN 1716805B
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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
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 carrying out the agreement of through-put power in optimization point-to-multipoint communication (1:N) network.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 (wireless local area network) (LAN), and it has remedied the shortcoming of wired lan by the advanced wireless communication technology.Because WLAN can extend to the zone that wired lan may reach hardly, the advantage that WLAN has flexibility and (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 by 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 of the portable terminal such as individual special network (personal Ad-hoc Network).
The portable terminal that uses in wireless network provides power from battery.Because there have been a lot of suggestions in the limited life-span of battery, by the transmission power information between the switching node, transmits data with minimum power between node.In U.S. Patent No. 5,450, can find an example in 616, in U.S. Patent No. 5,465, can find another example in 398 (WO 95/10142).
According to the U.S. Patent No. 5 that is entitled as " method and apparatus (Method and Apparatusfor 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 U.S. Patent 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), destination node compares the received signal strength indicator (RSSI) of received signal with the minimum strength of storing, and the notification source number of nodes is poor.Source node is adjusted through-put power so that satisfy predetermined threshold in the temporal moving average of received quantity difference.That is,, adjust the power level of source node according to the RSSI of received signal and the comparative result of minimum strength.
According to U.S. Patent 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 by 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 by 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 carrying out transfer of data between the bluetooth embedding equipment in short range distance.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 carry out 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) link information that receives according to a plurality of slave units from network, select to be used for the slave unit that through-put power is determined; (ii) based on the link information that receives from selected slave unit and can accept comparison between the quality, determine through-put power.
Best, step (i) comprises substep: (i-1) a plurality of slave units from network receive link information; (i-2), determine the order of a plurality of slave units according to the intensity of the link information that receives; (i-3) according in the definite order of substep (i-2), the slave unit that will have the intensity of minimum link information is defined as being used for the slave unit that through-put power is determined.
Best, substep (ii) comprises substep: (ii-1) check current through-put power; (ii-2) link information that relatively is used for the selected slave unit that through-put power determines with can accept quality; (ii-3) when link information equals to accept quality, write down current through-put power as the through-put power that is fit to; (ii-4) be lower than to accept quality the time when link information, obtain the through-put power that is fit to by increasing current through-put power; (ii-5) be higher than to accept quality the time when link information, obtain the through-put power that is fit to by reducing current through-put power.
Description of drawings
With reference to following detailed description in conjunction with the accompanying drawings, the present invention more fully to be estimated with much attendant advantages will be apparent, 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 of the minimum transmission power determining step of Fig. 4;
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
Describe the preferred embodiments of the present invention now with reference to accompanying drawing, and identical parts all give identical label, and omitted any unnecessary explanation as far as possible.
With reference to Fig. 1, comprise according to the device of through-put power in the peak optimizating network of the present invention: communication unit 10 with transmitting element 2 and receiving element 4; Power measurement unit 20; Power adjustment unit 30; Control unit 40; With memory 50.
Quality of connection measuring unit 32 is measured the quality that is connected with a certain slave unit based on the received power of the packet of being measured by power measurement unit 20 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, the quality of connection of this measurement in the present embodiment is defined as the reception quality of connection.
Quality of connection comparing unit 34 relatively receives quality of connection and predetermined reference connection quality.
Power is adjusted determining unit 36 according to the result that the calculating from quality of connection comparing unit 34 obtains, and 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 from the received power of the packet of power measurement unit 20 receptions and reception quality of connection.
Simultaneously, when by communication unit 10 when the packet of through-put power is adjusted in the request of receiving of a certain slave unit, according to through-put power adjustment request, control unit 40 updates stored in 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, adjusts request message so that receive through-put power.
With reference to the method for Fig. 2 to 8 description according to through-put power in the peak optimizating network of the present invention.
At first, with reference to the method for Fig. 2 description according to through-put power in the peak optimizating network of first preferred embodiment of the invention.
At first, receive packet (step S1) by 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 the packet of measuring and the accepting state parameter of packet, measure the quality of the reception connection of slave unit by power measurement unit 20.
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 the result who obtains by through-put power increase/minimizing determining step S5, through-put power is adjusted request message transmission to slave unit (step S6).
Through-put power increase/minimizing step S5 comprises following substep.
At first, determine the absolute value of quality of connection comparative result K | whether K| is lower than predetermined power adjustment unit (step S5-1).
If the absolute value of quality of connection comparative result K | K| is lower than the predetermined power adjustment unit, determines 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| is higher than the predetermined power adjustment unit, determines 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 predetermined 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 predetermined 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 a certain main equipment # 1 receives through-put power adjustment request, 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 determining that at S12 the through-put power adjustment is impossible, slave unit sends the through-put power adjustment can not message adjust request message main equipment #1 (step S12-1) to through-put power.
When determining to carry out the through-put power adjustment at S12, slave unit upgrades the transmission power value (step S13) that before had been stored in the memory 50 according to the request of main equipment # 1.
After finishing 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 at 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 through-put power adjustment and can not message arrive 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: benchmark through-put power determining step (step S440) and through-put power optimization step (step S480).
Benchmark through-put power determining step S440 by the link information that relatively receives from slave unit with can accept quality Q, determine 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 benchmark through-put power determining step S440.
At S440, network manager is by using the HCI command lanuage, ' Read_Transmit_Power ' that provides, the current through-put power (step S410) of check main equipment in Bluetooth specification.
Then, initialization slave unit counter variable N, and sum (T) the performance variable initialization (step S412) of slave unit by 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) by 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, pre-determine and to accept quality Q.
According to the link quality information (Link_Quality) that receives with can accept comparative result between the quality Q, the first comparison step S416 has following three kinds of situations:
＜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), promptly, 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 by 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 finishing first through-put power increase step (S420), main equipment is carried out first link quality information receiving step (S422) again by receive link quality information (Link_Quality) again from first slave unit.
Below, at second comparison step (S424), relatively the link quality information (Link_Quality) that 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 of Jie Shouing (Link_Quality) is lower than and can accepts quality Q again, carries out through-put power upper limit checking procedure (S426), that is, the through-put power of increase (IP) and maximum transmission power MP are relatively.
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, main equipment is carried out and is reduced self adaptation step (S430), and wherein, main equipment obtains benchmark through-put power (RP) by reducing current through-put power PP.
Reduce self adaptation step (S430) and comprise minimum transmission power determining 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.
More current through-put power PP of minimum transmission power determining 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), equally the link quality information (Link_Quality) that receives from N slave unit 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, if and current through-put power PP equals minimum transmission power MinP, carry out benchmark through-put power recording step (S418), if and current through-put power PP is not equal to minimum transmission power MinP, carries out through-put power and reduce 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), relatively the link quality information (Link_Quality) that 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 by 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, is recorded as benchmark through-put power RP (step S460) by the through-put power AP that will be fit to, and 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).
By 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 is selected step (S710) and through-put power determining 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 determined.
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 order determining step (S714), that is,, determine 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 determining at S714, the slave unit with minimum strength is defined as being used for the slave unit (step S716) that through-put power is determined.
Based on the link information that receives from the slave unit of selecting at slave unit to select the step S710 with can accept comparison between the quality Q, through-put power determining step (S730) is determined through-put power.
Through-put power determining step (S730) comprises following substep:
At first, check current through-put power (step S732).
Then, the link information of the slave unit of in slave unit determining step (S716), selecting with can accept quality Q relatively (step S734).
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 by 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 by 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 be not need be such as the process of the benchmark through-put power determining step of the 3rd embodiment.
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 produces step (S810), main equipment leaves and detects step (S820), candidate main equipment determining step (S830), benchmark through-put power determining step (S840) and through-put power optimization step (S860).
Candidate main equipment information produces step (S810) based on the link information that the slave unit from network receives, and produces candidate main equipment information.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 received 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 by using the HCI order of Bluetooth specification regulation, and " Read-RSSI " knows the intensity of received signal from main equipment.In addition, by using the HCI order, " Get_Link_Quality ", slave unit can obtain by the link quality information of a byte numeral (Link_Quality).The intensity of received signal and link quality information (Link_Quality) are high more, and state is good more.
Based on the order of highest signal strength and/or quality of connection, main equipment is identified 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 by broadcast channel.In view of slave unit may change the fact of their position, main equipment upgrades the order of candidate main equipment periodically.
At main equipment owing to several 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 by 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 disconnects (Disconnection_Complete) incident of finishing to the main frame report.
Can be according to connecting the loop cycle that watchdog timer is identified for checking the connection status between main equipment and the slave unit.In the loop cycle of determining like this, slave unit is periodically checked the connection status with main equipment.
When confirming the main equipment deviated from network, carry out candidate main equipment determining 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 broadcasts the information that does not connect slave unit to being connected slave unit.
If the first candidate main equipment is deviated from network also, according to the order of determining, next slave unit becomes the new main equipment of network.
When determining new main equipment, new main equipment and slave unit are determined 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 by being similar to the 3rd preferred embodiment, optimize transmissions power, that is, can obtain optimal transmission power by 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 by being similar to the 3rd preferred embodiment, optimize transmissions power, that is, can obtain optimal transmission power by 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 mentioned above, 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, by adjusting the through-put power of 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 claims definition and scope, can carry out various modifications and variations by those skilled in the art.
Claims (3)
1. the method for an optimize transmissions power in using the network of distributed transmission method comprises step:
(i) link information that receives according to a plurality of slave units by main equipment from network, selection is used for the slave unit that through-put power is determined;
(ii) by this main equipment based on the link information that receives from selected slave unit and can accept comparison between the quality, determine through-put power; With
(iii) use determined through-put power to carry out and the communicating by letter of a plurality of slave units by this main equipment.
2. the method for claim 1, wherein step (i) comprises substep:
(i-1) a plurality of slave units from network receive link information;
(i-2), determine the order of a plurality of slave units according to the intensity of the link information that receives; With
(i-3) according in the definite order of substep (i-2), the slave unit that will have the intensity of minimum link information is defined as being used for the slave unit that through-put power is determined.
3. the method for claim 1, wherein substep (ii) comprises substep:
(ii-1) check current through-put power;
(ii-2) link information that relatively is used for the selected slave unit that through-put power determines with can accept quality;
(ii-3) when link information equals to accept quality, write down current through-put power as the through-put power that is fit to;
(ii-4) be lower than to accept quality the time when link information, obtain the through-put power that is fit to by increasing current through-put power; With
(ii-5) be higher than to accept quality the time when link information, obtain the through-put power that is fit to by reducing current through-put power.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20000046810 | 2000-08-12 | ||
| KR46810/00 | 2000-08-12 | ||
| KR20000066863 | 2000-11-10 | ||
| KR66863/00 | 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 |
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| 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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| CN1716805A CN1716805A (en) | 2006-01-04 |
| CN1716805B true CN1716805B (en) | 2010-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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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 |
| CN2005100819095A Expired - Lifetime CN1716806B (en) | 2000-08-12 | 2001-08-10 | Method for optimizing transmission power of network |
| CN2005100819080A Expired - Lifetime CN1716805B (en) | 2000-08-12 | 2001-08-10 | Method for optimizing transmission power of network |
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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 |
| CN2005100819095A Expired - Lifetime CN1716806B (en) | 2000-08-12 | 2001-08-10 | Method for optimizing transmission power of network |
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| 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 |
| EP4356657A1 (en) * | 2021-06-17 | 2024-04-24 | Telefonaktiebolaget LM Ericsson (publ) | Limiting interference in a wireless point-to-point or point-to-multipoint network |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5157709A (en) * | 1989-05-29 | 1992-10-20 | Nec Corporation | Radio communications system adaptively assigning channels using power levels of idle channels |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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
- 2001-08-10 CN CN200510081907.6A patent/CN1722634B/en not_active Expired - Lifetime
- 2001-08-10 CN CN2005100819095A patent/CN1716806B/en not_active Expired - Lifetime
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5157709A (en) * | 1989-05-29 | 1992-10-20 | Nec Corporation | Radio communications system adaptively assigning channels using power levels of idle channels |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1722634A (en) | 2006-01-18 |
| CN1716805A (en) | 2006-01-04 |
| CN1716806B (en) | 2012-03-21 |
| CN1716806A (en) | 2006-01-04 |
| CN1722634B (en) | 2015-04-29 |
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