CN1722634B - Apparatus and method for controlling transmission device of in wireless network - Google Patents
Apparatus and method for controlling transmission device of in wireless network Download PDFInfo
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- CN1722634B CN1722634B CN200510081907.6A CN200510081907A CN1722634B CN 1722634 B CN1722634 B CN 1722634B CN 200510081907 A CN200510081907 A CN 200510081907A CN 1722634 B CN1722634 B CN 1722634B
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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
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
The divisional application that present patent application is the applying date is 08 month 10 days calendar year 2001, application number is 01125532.3, exercise question is the patent application of " apparatus and method of optimizing network transmitting power ".
Technical field
The present invention relates to the devices and methods therefor of the transmitted power controlling transmitting apparatus in a kind of wireless network, and in particular to a kind of devices and methods therefor of the transmitted power for controlling the transmitting apparatus for sending data in wireless network environment.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 uses the wireless wave being used for transfer of data.Known road form the radio communication device of wireless communication system removable, to be easy to carry and simply.In addition, because wireless communication system can independently transmit the such fact of data with customer location, wireless communication system is used for the field of more wide region.The example of a wireless communication system is WLAN (wireless local area network) (LAN), and it compensate for the shortcoming of wired lan by the advanced wireless communication technology.Because WLAN can extend to the region that wired lan may reach hardly, WLAN has flexibility and can install the advantage of (installability).
Meanwhile, wireless communication system uses and concentrates transmitted in packets and distribute packets transmission.Concentrated block transmission method can be used by means of only the relaying of a Centroid for communicating between terminal node and Centroid or between a node to another node.Meanwhile, according to the Distributed Transmission method of comprehensive characteristic using wireless system, the communication between direct XM to another node and do not need the relaying of an independent Centroid.Owing to ensureing mobility, Distributed Transmission method is effective especially in the network be made up of the mobile terminal of such as individual special network (personal Ad-hoc Network).
The mobile terminal used in the wireless network provides power from battery.Due to the life-span that battery is limited, there is a lot of suggestion, by the transmission power information between switching node, transmit data among the nodes with minimum power.In U.S. Patent No. 5,450, an example can be found in 616, in U.S. Patent No. 5, in 465,398 (WO 95/10142), another example can be found.
According to the U.S. Patent No. 5 being entitled as " method and apparatus (Method and Apparatus for Power Control in a Wireless LAN) of power control in wireless lans ", 450,616, first, sending node sends a packet to main equipment, and this packet comprises the transmission power information for initial packet transmission in wireless lans.Main equipment utilizes the power information of reception and signal quality data to calculate the recommended value being used for through-put power.Then, main equipment is to sending the result calculated from equipment.Correspondingly, sending node, according to the recommended value of this calculating for through-put power, adjusts transmitted in packets power.
According to the U.S. Patent No. 5 being entitled as " the automated power Automatic level control (Automatic Power LevelControl of a Packet Communication Link) of transmitted in packets link ", 465,398 (WO98/10142), the received signal strength indicator of Received signal strength is accorded with (RSSI) and compares with the minimum strength stored by destination node, and notification source number of nodes is poor.Source node adjustment through-put power is to meet predetermined threshold in the temporal moving average of received quantity difference.That is, according to the RSSI of Received signal strength and the comparative result of minimum strength, the power level of adjustment source node.
According to U.S. Patent No. 5,450,616 and No.5,465,398, in point to point link between the two nodes, suitably can adjust through-put power.But, when the point-to-multipoint communication usually expected in wireless lans, can not optimize transmissions power by the scheme of above-mentioned two patents suggestion.This is because it is difficult for keeping the power of all wireless devices in communication minimum only 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.
Example for the point-to-multipoint communication method of WLAN is Bluetooth technology.Bluetooth technology is a kind of wireless communications method, does not need centralized management, and between bluetooth embedded equipment, can carry out transfer of data in short range distance and without the need to being connected by cable.Although bluetooth can provide point-to-point or Point-to-multipoint connection, owing to lacking centralized control structure, Bluetooth technology being used is difficult in a network.One or more unit of Connection Sharing same channel in rete cutaneum network (piconet).Correspondingly, in rete cutaneum network, bluetooth flush mounting is used as main equipment, and other device is as from equipment.In the network of above-mentioned structure, main equipment must ensure to perform communicating from equipment with suitable minimum transmission power with constant adequate communication quality.
summary of the invention
The object of this invention is to provide a kind of apparatus and method, for controlling the transmitted power of the transmitting apparatus for sending data in wireless network environment, 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 object, according to an aspect of the present invention, the invention provides a kind of method for the through-put power of control data transmitting apparatus in wireless network environment, comprise step: receive the packet for asking the transmitted power measuring transmitting apparatus, this packet includes transmitted power measurement request message wherein; And send packet to control the transmitted power of transmitting apparatus in response to transmitted power measurement request message, this packet includes transmitted power adjustment request message wherein, wherein said transmitted power adjustment request message determines according to the information about the difference of the quality of connection of transmitting apparatus, and this difference is determined by the transmitted power of the packet using transmitting apparatus from the reference connection quality be stored in receiving equipment.
In order to realize above-mentioned object, according to another aspect of the present invention, present invention also offers a kind of device of the transmitted power for controlling the transmitting apparatus for sending data in wireless network environment, this device comprises: receiving-member, for receiving the packet for asking the transmitted power measuring transmitting apparatus, this packet includes transmitted power measurement request message wherein; And power measurement parts, for measuring the received power of the packet received from transmitting apparatus; Control assembly, for generating the packet of the transmitted power adjustment request message of the transmitted power comprised for controlling transmitting apparatus, wherein this transmitted power adjustment request message determines according to the information about the difference of the quality of connection of transmitting apparatus, described difference is by using measured transmitted power to determine from the reference connection quality prestored, and described packet comprises the transmitted power adjustment request message of the transmitted power for controlling transmitting apparatus equally; And transmit block, for generated packet is sent to transmitting apparatus, described packet includes transmitted power adjustment request message wherein.
accompanying drawing explanation
With reference to following detailed description by reference to the accompanying drawings, more fully evaluating the present invention will be apparent with much adjoint advantage, and understand better it, and label identical in accompanying drawing represents same or analogous parts.
Fig. 1 is the device block diagram according to optimizing network transmitting power of the present invention;
Fig. 2 is the method flow diagram of the main equipment of through-put power in the peak optimizating network according to first preferred embodiment of the invention;
Fig. 3 is the method flow diagram from equipment of through-put power in the peak optimizating network according to second preferred embodiment of the invention;
Fig. 4 is the flow chart of through-put power in the peak optimizating network according to third preferred embodiment of the invention;
Fig. 5 A is the sub-step flow chart of the minimum transmission power determining step of Fig. 4;
Fig. 5 B is the flow chart of the sub-step of minimizing self adaptation (adaptation) step of Fig. 4;
Fig. 6 is the optimized sub-step flow chart of through-put power of Fig. 4;
Fig. 7 is the method flow diagram of through-put power in the peak optimizating network according to four preferred embodiment of the invention;
Fig. 8 is the method flow diagram of through-put power in the peak optimizating network according to 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 omit any unnecessary explanation as far as possible.
With reference to Fig. 1, comprise according to the device of through-put power in peak optimizating network of the present invention: the 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.
The received power of quality of connection measuring unit 32 based on the packet of being measured by power measurement unit 20 and the accepting state parameter of packet, measure the quality with a certain connection from equipment.Be used for measuring and comprise from the accepting state parameter of the packet of equipment connection quality: data error rate, error correction rate bandwidth loss and delay.In addition, the quality of connection of this measurement is in the present embodiment defined as reception quality of connection.
Quality of connection comparing unit 34 compares reception quality of connection and predetermined reference connection quality.
The result that power adjustment determining unit 36 obtains according to the calculating from quality of connection comparing unit 34, determines whether the through-put power increasing or reduce from equipment.
The power adjustment that control unit 40 is determined according to power adjustment determining unit 36, divided into groups to from device radiates by transmitting element 2, this grouping request adjusts through-put power from equipment.
In addition, only have when measuring receiving element 4 receipt message of through-put power by request, control unit 40 is measured the received power of the packet received from power measurement unit 20 and is received quality of connection.
Meanwhile, when by communication unit 10 from a certain receive the packet of request adjustment through-put power from equipment time, according to through-put power adjustment request, control unit 40 to be stored in the transmission power value memory 50 from renewal of the equipment for request.While transmission packet, control unit 40 exports the through-put power adjustment control signal of the transmission power value that reflection upgrades to power adjustment unit 30.
In addition, control unit 40 with a certain cycle period, can broadcast through-put power measurement request message, to receive through-put power adjustment request message.
Describe according to the method for through-put power in peak optimizating network of the present invention to 8 with reference to Fig. 2.
First, with reference to Fig. 2, the method according to through-put power in the peak optimizating network of first preferred embodiment of the invention is described.
First, packet (step S1) is received by receiving element.Power measurement unit 20 measures the received power (step S2) of the packet received.
Receive quality of connection measuring unit 32 based on the received power of the packet of being measured by power measurement unit 20 and the accepting state parameter of packet, measure the quality connected from the reception of equipment.
Quality of connection comparing unit 34 calculates the difference K (step S4) received between quality of connection value and reference connection mass value.
With reference to the difference K obtained from comparison step S4, determine whether that the sender of request data packet increases from equipment or reduces through-put power (step S5).
According to the result being increased/reduced determining step S5 by through-put power and obtain, through-put power adjustment request message transmission is to from equipment (step S6).
Through-put power increases/reduces step S5 and comprises substep.
First, the absolute value of quality of connection comparative result K is determined | whether K| is lower than predetermined power adjustment unit (step S5-1).
If the absolute value of quality of connection comparative result K | K|, lower than predetermined power adjustment unit, determines quality of connection comparative result K whether on zero (0) (step S5-2).If so, keep the current transmission power from equipment, and terminate through-put power optimization procedure.
Meanwhile, if quality of connection comparative result is lower than zero (0), control unit 40 sends through-put power to this from equipment increase request message (step S6-2).
Meanwhile, if at the absolute value of S5-1 quality of connection comparative result K | K|, higher than predetermined power adjustment unit, determines quality of connection comparative result K whether on zero (0) (step S5-1a).If so, control unit 40 sends through-put power and reduces request message to from equipment (step S6-1).
If at S5-1a quality of connection comparative result K lower than zero (0), control unit 40 increases request message (step S6-2) to sending through-put power from equipment.
Correspondingly, if the absolute value of quality of connection comparative result K | K| is equal to or greater than predetermined power adjustment unit, and be greater than zero (0) at S5-1a quality of connection comparative result K, through-put power reduces request message and is sent to from equipment, until absolute value | and K| falls into the scope of predetermined power adjustment unit.
According to the another aspect of the first embodiment, only have 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).
Or main equipment can not perform comparison step, and simply send measurement result to from equipment.Then comparison step can be performed from equipment, and correspondingly Modulating Power.Because one can calculate all measured values sent from each main equipment from equipment, with regard to load Distribution, this method is than more efficient when main equipment performs comparison step.
With reference to Fig. 3, the method from equipment according to 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 be set to from unit check through-put power maximum or minimum, and just can not adjust through-put power (step S12) like this.
When determining that at S12 through-put power adjustment is impossible, send the impossible message of through-put power adjustment to through-put power adjustment request message main equipment #1 (step S12-1) from equipment.
When determining to carry out through-put power adjustment at S12, from the request of equipment according to main equipment # 1, upgrade the transmission power value (step S13) be previously stored in memory 50.
After completing S13, send packet (step S14) from equipment with the through-put power upgraded.
At this, may further include another step, broadcasting through-put power measurement request message for receiving through-put power adjustment request message with predetermined loop cycle.
According to the another aspect of the second embodiment, when through-put power can not be adjusted respectively, for connect with maximal received power from equipment, can through-put power be adjusted, simultaneously not make to decline with other quality of connection from equipment.In addition, when have reduce request from non-reference from the through-put power of equipment time, main equipment # 1 send through-put power adjustment can not message to non-reference from equipment.
With reference to Fig. 4 to 6, will describe according to main equipment and the method from the through-put power between equipment in the 3rd preferred embodiment peak optimizating network of the present invention below.
According to main equipment in the 3rd preferred embodiment peak optimizating network of the present invention with comprise from the method for the through-put power between equipment: reference transmission power determining step (step S440) and through-put power optimization step (step S480).
Reference transmission power determining step S440, by comparing the link information that receives from one from equipment and can accepting quality Q, determines main equipment and from the reference transmission power between equipment.Link information comprises main equipment and from the link quality information Link_Quality between equipment, direction, distance etc., in this embodiment, the example as link information uses by link quality information.
Main equipment and from the through-put power between equipment in through-put power optimization step S480 peak optimizating network.
The network manager of main equipment is according to command lanuage HCI, and ' Adapt_Transmit_Power ', performs reference transmission power determining step S440.
At S440, network manager, by using HCI command lanuage, ' Read_Transmit_Power ' that provide in Bluetooth specification, checks the current transmission power (step S410) of main equipment.
Then, initialization from unit count device variable N, and passes through the sum from equipment (T) the performance variable initialization (step S412) of record current network.In the third embodiment of the present invention describes, assuming that be ' 1 ' from the initial value of unit count device variable N, and be 5 from the total T of equipment.
After completing steps S412, network manager, by receiving link quality information (Link_Quality) from first from equipment, performs the first link quality information receiving step (S414).
Below, perform first and compare (S416), that is, compare the link quality information (Link_Quality) of reception in the first link quality information receiving step (S414) and can quality Q be accepted.During the structure of rete cutaneum network, pre-determine and can accept quality Q.
According to the link quality information (Link_Quality) received and the comparative result that can accept between quality Q, the first comparison step S416 has following three kinds of situations:
< situation 1>
When in S416, when equaling to accept quality Q from first from the link quality information (Link_Quality) of equipment reception, perform the first through-put power recording step (S418), namely, the current transmission power of inspection is recorded as reference transmission power (RP), and process moves to through-put power optimization step (S480).
< situation 2>
When in S416, from first from equipment receive link quality information (Link_Quality) lower than when can accept quality Q, main equipment performs increases self adaptation step, wherein, main equipment is by obtaining reference transmission power (RP) by increasing by a scheduled volume to first from the through-put power of equipment.
In increase self adaptation step, main equipment performs maximum transmission power comparison step (S419), and wherein, main equipment compares current transmission power (PP) and maximum transmission power (MP).
When equaling maximum transmission power MP at S419 current transmission power PP, represent the failure of through-put power self adaptation, and process terminates (step S427).
Meanwhile, if be different from maximum transmission power MP at S419 current transmission power PP, performing the first through-put power increases step (S420), that is, current transmission power PP increases by a predetermined step-length.
When completing the first through-put power and increasing step (S420), main equipment performs the first link quality information receiving step (S422) again by again receiving link quality information (Link_Quality) from first from equipment.
Below, at the second comparison step (S424), compare in the first link quality information again receiving step (S422) from the first link quality information again received from equipment (Link_Quality) with can accept quality Q.
If in the second comparison step (S424), again the link quality information (Link_Quality) received is lower than accepting quality Q, perform through-put power upper limit checking procedure (S426), that is, the through-put power (IP) of increase compares with maximum transmission power MP.
If current transmission power PP is different from maximum transmission power MP in S426, performing the first through-put power increases step (S420).
But, if equal maximum transmission power MP at S426 current transmission power PP, perform self adaptation and unsuccessfully indicate step (S427).
< situation 3>
When in S416, from first from equipment receive link quality information (Link_Quality) higher than when can accept quality Q, main equipment performs and reduces self adaptation step (S430), wherein, main equipment obtains reference transmission power (RP) by reducing current transmission 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; 3rd comparison step (S434); Second through-put power increases step (S436); With the 4th comparison step (S438), as shown in Figure 5 B.
Minimum transmission power determining step (S431) compares current transmission power PP and minimum transmission power MinP.If current transmission 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 S431 current transmission power PP, perform power and reduce step (S432), reduce the through-put power of N from equipment.
After through-put power reduces step S432, perform the second link quality information receiving step (S433) again, wherein again receive link quality information (Link_Quality) from N from equipment.
After the second link quality information again receiving step (S433), perform the 3rd comparison step (S434), equally from the N number of link quality information (Link_Quality) received from equipment with can accept quality Q and compare.
When the reception link quality information again (Link_Quality) of the 3rd comparison step (S434) is lower than when can accept quality Q, perform the second through-put power and increase step (S436), increase the through-put power DP reduced, and move to through-put power optimization step (S480).
When the reception link quality information again (Link_Quality) of the 3rd comparison step (S434) be not less than can accept quality Q time, perform the 4th comparison step (S438).In the 4th comparison step (S438), current transmission power PP compares with minimum transmission power MinP, and if current transmission power PP equals minimum transmission power MinP, perform reference transmission power trace step (S418), if and current transmission power PP is not equal to minimum transmission power MinP, performs through-put power and reduce step (S432).
Through-put power optimization step (S480) comprising: variable increases step (S452); Second link quality information receiving step (S454); 5th comparison step (S456); 3rd through-put power increases step (S458); Second through-put power recording step (S460); Through-put power optimization step (S462), as shown in Figure 6.
More particularly, after determining reference transmission power, increase from unit count device variable N with the through-put power (step S452) of optimization from equipment.
Below, main equipment performs the second link quality information receiving step (S454), receives link quality information (Link_Quality) from N from equipment.
Then, perform the 5th comparison step (S456), compare the link quality information (Link_Quality) that receives from N from equipment at the second link quality information receiving step (S454) and can quality Q be accepted.
If in the 5th comparison step (S456), the link quality information (Link_Quality) received from N from equipment is lower than accepting quality Q, main equipment is by increasing by a predetermined unit by N from the through-put power of equipment, and perform the second link quality information receiving step (S454), performing the 3rd through-put power increases step (S458).
Simultaneously, if in the 5th comparison step (S456), N is equal to or greater than from the link quality information (Link_Quality) of equipment can accept quality Q, by applicable through-put power AP is recorded as reference transmission power RP (step S460), perform reference power recording step (S460).
Below, perform through-put power optimization and confirm step (S462), that is, inspection whether for all from equipment optimization be applicable to through-put power AP.
Confirm step (S462) in through-put power optimization, compare with the total T from equipment from unit count device variable N.If be different from from unit count device variable N from the total T of equipment, performance variable increase step (S452), and if equal from unit count device variable N from the total T of equipment, terminate through-put power optimization step (S480).
By HCI command lanuage, " Write_Transmit_Power ", performs through-put power recording step (S460).
With reference to Fig. 7, the method according to through-put power in the peak optimizating network of four preferred embodiment of the invention will be described.
Comprise according to the method for through-put power in the peak optimizating network of four preferred embodiment of the invention: from equipment choice step (S710) and through-put power determining step (S730).
From equipment choice step (S710) based on from form network multiple from equipment receive link informations, select be used for through-put power determine from equipment.
Substep is comprised from equipment choice step (S710):
First, perform link information receiving step (S712), that is, receive link information from each of network from equipment.
Then, perform from equipment order determination step (S714), that is, according to the intensity of the link information received at link information receiving step (S712), determine respectively from the order of equipment.
According to the order from equipment determined at S714, have minimum strength from equipment be defined as through-put power determine from equipment (step S716).
Based on from the link information received from equipment selected from equipment choice step S710 and the comparison that can accept between quality Q, through-put power determining step (S730) determines through-put power.
Through-put power determining step (S730) comprises substep:
First, current transmission power (step S732) is checked.
Then, from select in equipment determining step (S716) from the link information of equipment with can accept quality Q and compare (step S734).
In situation 1, when the link information from equipment selected in comparison step (S734) equals to accept quality Q, current transmission power is recorded as suitable through-put power (S736).
In situation 2, when the link information from equipment selected in comparison step (S734) is lower than when can accept quality Q, perform and increase self adaptation step (S738), that is, obtain by increasing current transmission power the through-put power be applicable to.
In situation 3, when the link information from equipment selected in comparison step (S734) is higher than when can accept quality Q, perform and reduce self adaptation step (S740), that is, obtain by reducing current transmission power the through-put power be applicable to.
According to the 4th preferred embodiment of the present invention, for have Smallest connection information strength from equipment optimization through-put power.Correspondingly, the 4th embodiment will not need the process of the reference transmission power determining step of such as the 3rd embodiment.
Describe, when main equipment leaves, according to the method for through-put power in the peak optimizating network of fifth preferred embodiment of the invention with reference to Fig. 8.
In normal running, main equipment periodically sets the order from equipment for a candidate main equipment, so when current master leaves network, allows from the new network of device build one.
Through-put power optimal method when main equipment leaves comprises: candidate main equipment information generating step (S810), main equipment leaves detecting step (S820), candidate main equipment determining step (S830), reference transmission power determining step (S840), and through-put power optimization step (S860).
Candidate main equipment information generating step (S810), based on the link information received from equipment from network, produces candidate main equipment information.While generation candidate main equipment information, main equipment also receives link information from from equipment, network for confirmation all from equipment whether in radio transmission range.
Link information can be received signal strength indicator symbol (RSSI) and/or link quality information (Link_Quality).From notifying main equipment from equipment Inspection RSSI.RSSI is closely related with the distance apart from main equipment.Based on link quality information (Link_Quality), main equipment can be obtained and from the data error rate between equipment.Correspondingly, link quality information (Link_Quality) depends on some factor, such as main equipment and from the distance between equipment, main equipment and from the barrier etc. occurred between equipment.From the HCI order that equipment specifies by using Bluetooth specification, " Read-RSSI ", knows the intensity of Received signal strength from main equipment.In addition, by using HCI order, " Get_Link_Quality ", can obtain by the link quality information (Link_Quality) of a byte numeral from equipment.The intensity of Received signal strength and link quality information (Link_Quality) higher, state is better.
Based on the order of highest signal strength and/or quality of connection, main equipment determines the order from equipment of candidate main equipment.Correspondingly, when main equipment leaves network, becoming new main equipment from equipment there is higher possibility closest to main equipment, and reconstruct and other network from equipment.
Main equipment is used for the order from equipment of candidate main equipment by broadcast channel to broadcasting from equipment.In view of may change their fact of position from equipment, main equipment upgrades the order of candidate main equipment periodically.
When main equipment leaves network due to the deliberate action etc. of several reason such as power depletion, user, according to the order of candidate main equipment, for new main equipment reconstructed network.
After generation candidate main equipment information, perform main equipment and leave detecting step (S820), detect main equipment and whether leave network.First leaving of main equipment is detected by main equipment with from the disconnection between equipment.According to bluetooth specification version 1.0, bluetooth flush mounting setting connection monitoring timer, for checking the connection status between them with predetermined period circulation (such as, 0.625ms-40.9sec).When disconnection being detected, bluetooth embedded equipment has disconnected (Disconnection_Complete) event to host report.
Inspection main equipment and the loop cycle from the connection status between equipment can be determined according to connection monitoring timer.In the loop cycle determined like this, check the connection status with main equipment from device periodically.
When confirming that main equipment leaves network, perform candidate main equipment determining step (S830).
From equipment, the first candidate main equipment is assumed to new main equipment, and sets up the connection with new main equipment, and build a new network.
New main equipment sets up the connection from equipment with network, and is confirmed whether allly to be connected from equipment.If exist any be not connected with new main equipment from equipment, main equipment broadcasts from equipment the information do not connected from equipment to being connected.
If the first candidate main equipment also leaves network, according to the order determined, the next new main equipment becoming network from equipment.
When determining new main equipment, new main equipment and determine the reference transmission power (step S840) between them from equipment.In step S840, reference transmission power can be maximum transmission power also can be minimum transmission power.When in step S840, when reference transmission power is maximum transmission power, can by being similar to the process of the minimizing self adaptation step of the 3rd preferred embodiment, optimize transmissions power, that is, optimal transmission power can be obtained by current transmission power being reduced to the satisfied degree that can accept quality Q.
Simultaneously, if reference transmission power is minimum transmission power, can by being similar to the process of the increase self adaptation step of the 3rd preferred embodiment, optimize transmissions power, that is, optimal transmission power can be obtained by current transmission power being increased to the satisfied degree that can accept quality Q.
Through-put power recording step is at the booking situation position of bluetooth module record current transmission power, and the benchmark that the current transmission power of use record increases as through-put power or reduces is until through-put power optimization step terminates.
As mentioned above, according to the present invention, can main equipment and from the through-put power between equipment in peak optimizating network.In addition, if main equipment leaves network, a candidate main equipment is set to the new main equipment of the new network of structure one.In addition, the new main equipment of optimization and from the through-put power between equipment.Correspondingly, by adjusting the through-put power of network, while the communication quality that maintenance is suitable, through-put power consumption can be reduced.
Although describe the preferred embodiments of the present invention, understand the present invention and should not be limited to these preferred embodiments, but by those skilled in the art not departing from the essence and scope that claims define and can carry out various modifications and variations.
Claims (12)
1., by the method for through-put power doing control data transmitting apparatus in wireless network environment, comprise step:
Receive the packet for asking the transmitted power measuring transmitting apparatus, this packet includes transmitted power measurement request message wherein; And
Send packet to control the transmitted power of transmitting apparatus in response to transmitted power measurement request message, this packet includes transmitted power adjustment request message wherein, wherein
Described transmitted power adjustment request message determines according to the information about the difference of the quality of connection of transmitting apparatus, and this difference is determined by the transmitted power of the packet using transmitting apparatus from the reference connection quality be stored in receiving equipment,
Wherein, determine the quality of connection of this transmitting apparatus based on the received power of the packet of transmitting apparatus and accepting state parameter,
Wherein, described accepting state parameter is measured by least one in usage data error rate, error correction rate, bandwidth loss and delay degree.
2. method according to claim 1, wherein, described wireless network environment comprises WLAN.
3. method according to claim 1, wherein, described reference connection quality comprises the benchmark transmitted power of receiving equipment.
4. method according to claim 1, wherein includes between the step of the packet of transmitted power measurement request message and the step sending the packet wherein including transmitted power adjustment request message in reception and also comprises step:
The reference connection quality of the quality of connection of transmitting apparatus and receiving equipment is compared;
Result based on the comparison determines the power adjustment of the transmitted power of transmitting apparatus; And
Produce the transmitted power adjustment request message comprising determined power adjustment.
5. method according to claim 1, also comprises step: the received power determining the packet of receiving equipment.
6. method according to claim 1, wherein this transmitted power adjustment request message comprises the message for asking the transmitted power increasing and reduce transmitting apparatus.
7., for controlling a device for the transmitted power of the transmitting apparatus for sending data in wireless network environment, this device comprises:
Receiving-member, for receiving the packet for asking the transmitted power measuring transmitting apparatus, this packet includes transmitted power measurement request message wherein; And
Power measurement parts, for measuring the received power of the packet received from transmitting apparatus;
Control assembly, for generating the packet of the transmitted power adjustment request message of the transmitted power comprised for controlling transmitting apparatus, wherein this transmitted power adjustment request message determines according to the information about the difference of the quality of connection of transmitting apparatus, described difference is by using measured transmitted power to determine from the reference connection quality prestored, and described packet comprises the transmitted power adjustment request message of the transmitted power for controlling transmitting apparatus equally; And
Transmit block, for generated packet is sent to transmitting apparatus, described packet includes transmitted power adjustment request message wherein,
Wherein, determine the quality of connection of this transmitting apparatus based on the received power of the packet of transmitting apparatus and accepting state parameter,
Wherein, described accepting state parameter is measured by least one in usage data error rate, error correction rate, bandwidth loss and delay degree.
8. device according to claim 7, also comprises: memory, for storing transmission power value.
9. device according to claim 7, wherein, described wireless network environment comprises WLAN.
10. device according to claim 7, wherein, described reference connection quality comprises the benchmark transmitted power of receiving equipment.
11. devices according to claim 7, wherein, described control assembly comprises:
Quality of connection measurement component, for determining the quality of connection of transmitting apparatus;
Quality of connection comparing unit, for comparing the quality of connection of transmitting apparatus and the reference connection quality prestored; And
Power adjusting element, for determining the power adjustment of the transmitted power of transmitting apparatus, and produces the transmitted power adjustment request message including determined power adjustment wherein.
12. devices according to claim 7, wherein this transmitted power adjustment request message comprises the message for asking the transmitted power increasing and reduce transmitting apparatus.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR46810/00 | 2000-08-12 | ||
| KR20000046810 | 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 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011255323A Division CN100471142C (en) | 2000-08-12 | 2001-08-10 | Device and method for optimizing network transmitting power |
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| CN1722634A CN1722634A (en) | 2006-01-18 |
| CN1722634B true CN1722634B (en) | 2015-04-29 |
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| CN2005100819080A Expired - Lifetime CN1716805B (en) | 2000-08-12 | 2001-08-10 | Method for optimizing transmission power of network |
| 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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| CN2005100819080A Expired - Lifetime CN1716805B (en) | 2000-08-12 | 2001-08-10 | Method for optimizing transmission power of network |
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| CN2005100819095A Expired - Lifetime CN1716806B (en) | 2000-08-12 | 2001-08-10 | Method for optimizing transmission power of network |
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| CN (3) | CN1716805B (en) |
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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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1185706A (en) * | 1996-12-05 | 1998-06-24 | 日本电气株式会社 | Emission power control device for moveable communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| FI108179B (en) * | 1993-09-03 | 2001-11-30 | Nokia Networks Oy | A method for controlling transmit power in a radiotelephone system and a radiotelephone exchange |
| JP2904335B2 (en) * | 1994-04-27 | 1999-06-14 | エヌ・ティ・ティ移動通信網株式会社 | Transmission power control method and mobile station device |
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2001
- 2001-08-10 CN CN2005100819080A patent/CN1716805B/en not_active Expired - Lifetime
- 2001-08-10 CN CN200510081907.6A patent/CN1722634B/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1185706A (en) * | 1996-12-05 | 1998-06-24 | 日本电气株式会社 | Emission power control device for moveable communication system |
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| Title |
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| 宽带CDMA的功率控制算法的研究;侯春萍、孙贞文、曹达仲;《天津大学学报》;20000331;第33卷(第2期);第156页左栏第11-31行 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1716805A (en) | 2006-01-04 |
| CN1716806B (en) | 2012-03-21 |
| CN1716806A (en) | 2006-01-04 |
| CN1722634A (en) | 2006-01-18 |
| CN1716805B (en) | 2010-06-16 |
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