CN101964679A - Ethernet over Coax equipment power control method and device thereof - Google Patents
Ethernet over Coax equipment power control method and device thereof Download PDFInfo
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Abstract
The invention discloses an Ethernet over Coax equipment power control method and a device thereof. The method comprises the steps that: Ethernet over Coax EoC head end equipment detects line attenuation and signal performance of a signal sent by EoC terminal equipment; the EoC head end equipment judges, according to the detected signal performance and a preset signal performance threshold, whether power regulation of the EoC head end equipment is required, and regulates transmission power of the EoC terminal equipment according to the line attenuation and the signal performance of the EoC terminal equipment when the power regulation is required. According to the invention, the transmission power of the EoC terminal equipment can be automatically regulated by the EoC head end equipment according to the transmission power and the signal performance of the EoC terminal equipment, in order to reduce the interference with television signal in case of meeting certain signal performance.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of coaxial ethernet device Poewr control method and device thereof.
Background technology
The integration of three networks is meant the interpenetrating of telecommunications network, broadcasting and television network and computer communication network, compatible, and progressively integrates and become unified communication network.The integration of three networks is in order to realize sharing of Internet resources, to avoid low-level repeated construction, the multimedia basics platform of the high-speed wideband that form wide adaptability, safeguard easily, expense is low.The integration of three networks is the inexorable trend of modern information technologies fusion development.
Along with the enforcement gradually of the integration of three networks, EoC (Ethernet over Cable, coaxial Ethernet) technology is because of the actual demand of its proper radio and television coaxial network, thereby is broadcasted TV network and widely applies.Popularization and application along with EoC, EoC also exposes gradually to the influence of TV signal in the original coaxial cable, closer occasions of some EoC headend distance users man particularly, because the more intense TV signal that causes of EoC signal is influenced, as, cause simulated television snow or horizontal stripe phenomenon to occur, mosaic phenomenon etc. appears in Digital Television.Particularly the EoC terminal equipment is nearest apart from television set usually, the easier TV signal that influences.Also have some application scenarios to have the TV control appliance of addressing device one class, same existence may by EoC terminal signaling interference effect.
Therefore, how under some application circumstances, adjust the transmitting power of EoC equipment, avoid TV signal is exerted an influence, become the important bottleneck that the EoC equipment promotion is popularized.
For addressing the above problem, present solution is: increase attenuator at EoC equipment (as the EoC headend or/and the EoC terminal equipment) output, thereby the EoC signal strength signal intensity is reduced, to reduce the interference to TV signal.
Fig. 1 and Fig. 2 show two kinds of schematic diagrames of above-mentioned solution respectively, wherein, in the solution shown in Figure 2, be built-in with blender in the EoC equipment, TV signal need be passed through EoC equipment transparent transmission, like this, during the mixed signal of TV signal and EoC signal process attenuator, TV signal can be brought the same decay equally into.
In realizing process of the present invention, the inventor finds prior art, and there are the following problems at least:
Prior art solutions need increase hardware device---attenuator, has so both increased network cost, has reduced the reliability of network again.
Summary of the invention
The object of the present invention is to provide a kind of coaxial ethernet device Poewr control method and device thereof, when with realization coaxial ethernet device being carried out power control, do not need additionally to introduce hardware device again, for this reason, the present invention adopts following technical scheme:
A kind of coaxial ethernet device Poewr control method may further comprise the steps:
The Line Attenuation and the signal performance of the signal that coaxial Ethernet EoC headend detection EoC terminal equipment is sent; Whether needs carry out the power adjustment to described EoC headend to described EoC headend with default signal performance threshold decision according to detected signal performance, and when needs carry out the power adjustment, according to the Line Attenuation and the signal performance of described EoC terminal equipment, the transmitting power of described EoC terminal equipment is adjusted.
In the said method, described EoC headend is in the process that inserts described EoC terminal equipment, if according to detected signal performance and default signal performance threshold decision needs described EoC headend is carried out the power adjustment, then the transmitting power of described EoC terminal equipment is adjusted; Or/and,
When described EoC headend carries out transfer of data with this EoC terminal equipment after inserting described EoC terminal equipment, if according to detected signal performance and default signal performance threshold decision needs described EoC headend is carried out the power adjustment, then the transmitting power of described EoC terminal equipment is adjusted.
In the said method, described signal performance comprises error rates of data; Described EoC headend judges whether and need carry out the power adjustment to described EoC headend, is specially: when the detected error rate of described EoC headend is higher than error rate threshold value, judge the transmitting power that needs to improve the EoC terminal equipment; Perhaps,
When the detected error rate of described EoC headend is higher than error rate upper limit threshold, judge the transmitting power that needs to improve the EoC terminal equipment; When being lower than error rate lower threshold, the detected error rate judges the transmitting power that needs to reduce the EoC terminal equipment.
In the said method, described signal performance also comprises signal to noise ratio; Described Line Attenuation and signal performance according to described EoC terminal equipment, transmitting power to described EoC terminal equipment is adjusted, be specially: described EoC headend should satisfy minimum requirements and the principle of adjusted power between the power bound according to the error rate of carrying out the adjusted signal of power, and determines the performance number that needs are adjusted according to detected Line Attenuation and signal to noise ratio; The performance number of the needs adjustment that described EoC headend will be determined sends to described EoC terminal equipment.
In the said method, described EoC headend receives the access request message that described EoC terminal equipment sends in the process that inserts described EoC terminal equipment, carry the current power parameter of described EoC terminal equipment in the described access request message;
The Line Attenuation of the signal that described EoC headend detection EoC terminal equipment is sent comprises:
Described EoC headend is according to the power parameter that carries in the described access request message, and detected signal strength signal intensity when receiving this access request message, determines the Line Attenuation of the signal that this EoC terminal equipment is sent.
A kind of EoC headend comprises:
Detection module is used to detect the Line Attenuation and the signal performance of the signal that the EoC terminal equipment sent;
Power control module, be used for whether needs carry out the power adjustment to described EoC headend with default signal performance threshold decision according to the detected signal performance of described detection module, and when needs carry out the power adjustment, according to the Line Attenuation and the signal performance of described EoC terminal equipment, the transmitting power of described EoC terminal equipment is adjusted.
In the above-mentioned EoC headend, described detection module specifically is used for, and inserts in the described EoC headend process at described EoC terminal equipment and detects;
Described power control module specifically is used for, insert in the described EoC headend process at described EoC terminal equipment, described EoC headend is being carried out carrying out when power is adjusted the power adjustment according to detected signal performance of described detection module and default signal performance threshold decision needs.
In the above-mentioned EoC headend, described detection module specifically is used for, and detects when carrying out transfer of data with this EoC terminal equipment after described EoC terminal equipment inserts described EoC headend;
Described power control module specifically is used for, when after described EoC terminal equipment inserts described EoC headend, carrying out transfer of data, described EoC headend is being carried out carrying out when power is adjusted the power adjustment according to detected signal performance of described detection module and default signal performance threshold decision needs with this EoC terminal equipment.
In the above-mentioned EoC headend, described signal performance comprises error rates of data; Described power control module specifically is used for, and when the detected error rate is higher than error rate threshold value, judges the transmitting power that needs to improve the EoC terminal equipment; Perhaps,
When the detected error rate is higher than error rate upper limit threshold, judge the transmitting power that needs to improve the EoC terminal equipment; When being lower than error rate lower threshold, the detected error rate judges the transmitting power that needs to reduce the EoC terminal equipment.
In the above-mentioned EoC headend, described signal performance also comprises signal to noise ratio; Described power control module specifically is used for, should satisfy minimum requirements and the principle of adjusted power between the power bound according to the error rate of carrying out the adjusted signal of power, and determine the performance number that needs are adjusted according to detected Line Attenuation and signal to noise ratio; And, the performance number of the needs adjustment determined is sent to described EoC terminal equipment.
Compared with prior art, the present invention has the following advantages:
The Line Attenuation and the signal performance of the signal that can be sent according to the EoC terminal equipment by the EoC headend are adjusted the transmitting power of EoC terminal equipment, to satisfy under the situation of certain signal performance, reduce the interference to TV signal.Compared with prior art, need not additionally to introduce hardware such as attenuator, network configuration is simple, realizes that cost is low, and can send the transmitting power that the situation self adaptation is adjusted this terminal equipment according to the signal of EoC terminal equipment.
Description of drawings
Fig. 1 and Fig. 2 are respectively and use attenuator to reduce the schematic diagram of EoC signal to the TV signal influence in the prior art;
Fig. 3 is the schematic diagram of the star-like connection of EoC equipment in the prior art;
Fig. 4 is the schematic diagram that EoC device tree type connects in the prior art;
EoC plant capacity control flow schematic diagram in the access procedure that Fig. 5 provides for the embodiment of the invention;
EoC plant capacity control flow schematic diagram after the access that Fig. 6 provides for the embodiment of the invention;
The structural representation of the EoC plant capacity control device that Fig. 7 provides for the embodiment of the invention.
Embodiment
For solving the problems referred to above of prior art, the embodiment of the invention provides a kind of EoC plant capacity controlling schemes.In the technical scheme that the embodiment of the invention provides, the EoC headend is according to the Line Attenuation (or claiming loss or line loss) and the signal performance of the signal of EoC terminal equipment transmission, this EoC terminal equipment is carried out power control, thereby realized automatically the power of EoC terminal equipment being controlled by the EoC headend, to reduce the influence of TV signal and to take into account the requirement of signal performance, and it is simple, do not need additionally to introduce hardware devices such as signal attenuator, be convenient to the laying with EoC equipment, and the EoC terminal equipment is not had specific (special) requirements.
Usually, have two kinds of equipment in the EoC network, a kind of is the EoC headend, and a kind of is the EoC terminal equipment, and its main networking mode can be as shown in Figure 3 and Figure 4.
Fig. 3 shows a kind of typical hub-and-spoke network topology figure, and Fig. 4 shows a kind of typical tree network topological diagram.According to above two kinds of typical network topologies, the EoC headend is communicated by letter with each EoC terminal equipment, the transmitting power of EoC headend need be considered the poorest EoC terminal equipment sight farthest, so EoC headend transmitting power can be according to network topology and Line Attenuation decision, usually do not need dynamic adjustment, get final product but fixedly install.But the EoC terminal equipment is just different, the EoC terminal equipment is One's name is legion not only, and its position might have change, and as user's removal of home, maintenance of equipment is changed, moving back net provides etc. again, because the change of position, the EoC terminal equipment also can change apart from the distance of EoC headend thereupon, so Line Attenuation also can change thereupon, thereby need adjust the transmitting power of EoC terminal equipment according to this situation of change, to reduce of the interference of its EoC signal of being launched to TV signal.
In the EoC plant capacity controlling schemes that the embodiment of the invention provides, can be by Line Attenuation and the signal performance of EoC headend according to the signal of EoC terminal equipment transmission, automatically the power of EoC terminal equipment is adjusted, promptly need not be as shown in Figure 1 after the EoC headend or as shown in Figure 2 at the inner signal attenuator that increases of EoC headend.
Below in conjunction with the accompanying drawing among the present invention, the technical scheme among the present invention is carried out clear, complete description, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills are obtained under the prerequisite of not making creative work belongs to the scope of protection of the invention.
Referring to Fig. 5, be the EoC plant capacity control flow schematic diagram that the embodiment of the invention provides, as shown in the figure, this flow process can comprise the steps:
In this step, need at first insert the EoC headend when EoC terminal equipment powers at every turn, thereby set up and the communicating to connect of EoC headend.When inserting, the EoC terminal equipment can be connected with the EoC headend with predefined transmitting power, also can be connected with the EoC headend with (before the following electricity) transmitting power when communicating with EoC headend last time.In the embodiment of the invention EoC terminal equipment in access procedure is not done restriction with next the connection with the EoC headend of which kind of watt level.Transmitting power when the embodiment of the invention preferably adopted communicated with the EoC headend last time is connected with the EoC headend, can reduce the power adjustment process to a certain extent like this, this be because: do not take place in the EoC network environment under the situation of too big variation, the EoC terminal equipment that does not change at those positions, because it is in down the transmitting power before the electricity has been controlled in to a certain degree to the influence of TV signal, therefore after this EoC terminal equipment powers on once more, if insert with this transmitting power, then can reduce the power control process of EoC headend to this EoC terminal equipment, and then reduce power and adjust the transmission of parameter and the power adjustment process of EoC terminal equipment side, thereby reduce the processing procedure of EoC headend and EoC terminal equipment, and reduce signaling consumption.
Allow in the embodiment of the invention EoC terminal equipment repeatedly (number of times can be provided with) attempt being connected (promptly repeatedly sending the access request message) with the EoC headend, up to successful connection or reach maximum attempts, thereby guarantee successful connection to a certain extent.Further, transmitting power when adopting last time and EoC headend to communicate, when perhaps adopting than the little transmitting power of EoC terminal equipment maximum transmission power, if attempt all not successful connections behind certain number of times (this number of times is set to usually less than maximum attempts), then the EoC terminal equipment is connected with the EoC head end with maximum transmission power, thereby can guarantee successful connection to a certain extent.When sending the access request message each time, the parameter that the EoC terminal equipment will characterize the current transmit power size is carried in this access request message.
In this step, on the one hand, the EoC headend is when receiving the access request message of EoC terminal equipment transmission, can detect the signal strength signal intensity of current this EoC terminal equipment that receives, and can and insert the transmit power parameter of carrying in the request message and determine Line Attenuation according to detected signal strength signal intensity; On the other hand, the EoC headend can also be determined the performance of this signal according to the situation that receives the signal that this EoC terminal equipment sends, as the signal to noise ratio of the data error rate, signal etc.The embodiment of the invention does not limit the mode of above definite Line Attenuation or definite signal performance, realizes as adopting existing mode.
The EoC headend is after determining Line Attenuation and signal performance, can judge whether that needs adjust the transmitting power of this EoC terminal equipment according to signal performance, adjust if desired, then further determine the performance number of adjustment according to signal performance, Line Attenuation, and can further carry out conventional treatment, as the access request of response EoC terminal equipment; If do not need to adjust, then transmitted power is not adjusted parameter and is given the EoC terminal equipment, and can further carry out conventional treatment, as the access request of response EoC terminal equipment.
In this step, the specific messages that the EoC headend can be provided with by the embodiment of the invention as power adjustment commands, is adjusted parameter with power and is sent to the EoC terminal equipment, also power can be adjusted parameter and be carried to insert in the response message and send to the EoC terminal equipment.Present embodiment is preferably adjusted power parameter and is carried at the mode that inserts response message, can save the signaling consumption between EoC headend and the EoC terminal equipment like this.
In this step, after the EoC terminal equipment was connected to the EoC headend, the EoC terminal equipment was accepted the power adjustment parameter that the EoC headend sends, and adjusted the transmitting power of parameter adjustment self according to this power.After this, the EoC terminal equipment can adopt adjusted transmitting power to carry out transfer of data.
But this step specific implementation in actual applications is: after the EoC terminal equipment receives the power adjustment parameter of EoC headend transmission, be stored to power and adjust in the parameter storage area, from this zone, read the power adjustment parameter of being stored then its current transmit power is adjusted.It can be storage area in the non-volatile memory modules such as Flash that described power is adjusted the parameter storage area, so that do not lose under the situation of electricity under this EoC terminal equipment.
In the embodiment of the invention, the power of Eoc terminal equipment is adjusted the parameter storage area can be divided into two zones: maximum power adjusts parameter region and current power is adjusted parameter region.It is just fixing when equipment dispatches from the factory that maximum power is adjusted parameter region, no longer revises during use.It is to be made amendment by issuing power adjustment commands by the EoC headend that current power is adjusted parameter region, and the EoC terminal equipment can be adjusted actual emission power by the power adjustment that reads in this zone.Each parameter region can comprise a plurality of parameters, and in the EoC technology, its communications band can divide a lot of subchannels again, and each subchannel all is an independent power adjustment, so each subchannel all can have a power adjustment.For simplifying the EoC Terminal Design, it need not to possess ability how to determine power adjustment, and it only needs to select from above-mentioned two districts the parameter in a district to get final product as power adjustment.In actual applications, the EoC terminal equipment can be according to determining to select to use the power in which district to adjust parameter with the situation that is connected of EoC headend, as, set up the parameter that to use in the process in the maximum power adjustment parameter region in connection, after connecting foundation, can use the parameter in the current power adjustment parameter region.
Further, the EoC terminal equipment also can also be preserved adjusted transmitting power, so that under the situation of electricity under this EoC terminal equipment, do not lose, thereby when the EoC terminal equipment powers on once more, the transmitting power size that is adopted in the time of can determining to insert according to the transmit power parameter of the last time of preserving.
In the step 503 of above-mentioned flow process, the EoC headend judges whether the specific implementation that needs are adjusted the transmitting power of EoC terminal equipment according to Line Attenuation, signal performance, can follow following principle:
Under the less situation of Line Attenuation, show EoC headend and EoC terminal equipment close together, less transmitting power can be set, thereby under the situation of the signal performance that guarantees the EoC terminal equipment, of the interference of the signal of EoC terminal equipment can be reduced again, also the EoC power consumption of terminal equipment can be reduced simultaneously TV signal; Under the bigger situation of Line Attenuation, show that EoC headend and EoC terminal equipment distance is far away, bigger transmitting power can be set, thereby guarantee the signal performance of EoC terminal equipment;
Under the good situation of signal performance, less transmitting power can be set, so both can guarantee that signal performance meets the requirements, can reduce of the influence of the transmission signal of EoC terminal equipment again to TV signal, also can reduce the EoC power consumption of terminal equipment simultaneously; Under the situation of signal performance difference, bigger transmitting power can be set, thereby guarantee the signal performance of EoC terminal equipment;
Line Attenuation, signal performance also will be taken into account consideration.
Based on above principle, in actual applications, the bound and the power bound of setting signal performance parameter (as the data error rate) on the EoC headend in advance, how the transmitting power of EoC terminal equipment is adjusted, and all should adjust within power bound scope.The value of power bound can determine that by experience or actual measurement principle is to guarantee as far as possible that EoC equipment can not exert an influence to TV signal according to the real network environment.The bound of signal performance parameter (as the data error rate) is used to judge whether to carry out the power adjustment, for example, if error rates of data is between this bound, then need not to adjust the transmitting power of EoC terminal, if error rates of data is greater than the upper limit, error rates of data then under the constraint of power bound, can suitably increase transmitting power, if less than lower limit, then can suitably reduce transmitting power under the constraint of power bound.Line Attenuation and other performance parameters parameters such as (as signal to noise ratios) are mainly used in when carrying out the power adjustment, quickening is regulated the speed, for example, can be according to Line Attenuation and snr value, estimating needs to adjust power parameter, it can be final basis for estimation with the error rate that the final power of determining is adjusted parameter, guarantees that promptly the error rate less than the error rate upper limit, satisfies the minimum requirements of the error rate in other words.
Concrete, can control the power of EoC terminal equipment in the following way:
Set in advance error rate threshold value; The error rate of determining when the EoC headend shows that signal performance does not meet the demands during greater than error rate threshold value, needs suitably to improve the transmitting power of EoC terminal equipment this moment.After determining needs raising transmitting power, can determine the performance number that needs improve according to Line Attenuation and signal to noise ratio parameter and power bound, after improving this performance number, should be able to guarantee that in principle the minimum requirements of the error rate and adjusted power are between the power bound.Owing between signal to noise ratio, the error rate, Line Attenuation and the transmitting power certain interactional relation is arranged, therefore when determining power adjustment, need take into account consideration to determine suitable power adjustment.
, can also suitably reduce the transmitting power of EoC terminal equipment, thereby reach the interference that further reduces TV signal preferably under the situation at signal performance, also can save the EoC power consumption of terminal equipment.Concrete, can set in advance error rate bound, the error rate of determining when the EoC headend shows that signal performance does not meet the demands during greater than (or equaling) error rate higher limit, need suitably to improve the transmitting power of EoC terminal equipment this moment, concrete control method can be same as above.The error rate of determining when the EoC headend shows that signal performance is better during less than (or equaling) error rate lower limit, and can suitably reduce the transmitting power of EoC terminal equipment this moment.After determining needs reduction transmitting power, can determine the performance number that needs reduce according to Line Attenuation and signal to noise ratio parameter and power bound, after reducing this performance number, should be able to guarantee that in principle the minimum requirements of the error rate and adjusted power are between the power bound.
According to above principle, those skilled in the art should be able to adopt multiple specific implementation, the EoC headend can be controlled the transmitting power of EoC terminal equipment according to parameters such as Line Attenuation, signal performance parameter, power bounds, enumerate no longer one by one at this.
By above flow process as can be seen, the transmitting power of EoC terminal equipment not only with its distance dependent (this distance can be characterized by signal attenuation) to the EoC headend, and, be correlated with as circuit noise (the signaling noise can be characterized by the signal to noise ratio of signal), EoC headend receiving sensitivity (receiving sensitivity can be characterized by error rates of data) with signal performance.Therefore, the embodiment of the invention can reduce the transmitting power of EoC terminal equipment, thereby not only solve the problem of EoC signal interfering TV signal on the basis that guarantees reliable data transmission largely, has also reduced EoC terminal equipment power consumption simultaneously.In addition, it is simple by the EoC headend EoC terminal equipment to be carried out the scheme that power adjusts, and reduces the requirement of EoC terminal equipment and the production cost of EoC terminal equipment, and then reduces the cost of whole EoC system.
More than be in EoC terminal equipment access procedure, to carry out power control.Consider coaxial cable with difference variation day and night, changing also can appear in its Line Attenuation, and along with the switch of user's TV, the circuit noise situation also can change simultaneously.The embodiment of the invention reduces transmitting to the interference of TV signal of EoC terminal equipment as far as possible in order to adapt to this variation, can carry out dynamic power control in data transmission procedure.
In the embodiment of the invention, insert back (can adopt flow process as shown in Figure 1 to insert, also can adopt existing mode to insert or other modes insert), can adopt flow process shown in Figure 4 that the EoC terminal equipment is carried out power control at the EoC terminal equipment.As shown in Figure 6, this flow process can comprise the steps:
In this step, the EoC terminal equipment determines that the mode of Line Attenuation and signal performance can be same or similar with the corresponding steps in the flow process shown in Figure 5, difference is: the EoC terminal equipment can the transmit power parameter that self is current report the EoC headend, the EoC headend has been known the transmitting power of this EoC terminal equipment when this EoC terminal equipment inserts, if follow-up transmitting power to this EoC terminal equipment is adjusted, then the EoC headend also can draw this EoC terminal equipment according to the performance number before adjusting and power adjustment and carries out current transmitting power after the power adjustment.
In this step, whether the EoC headend is disconnected needs this EoC terminal equipment is carried out the power adjustment, and the mode of definite power adjustment, identical with corresponding steps in the flow process shown in Figure 5, does not repeat them here.
When step 603, EoC headend need be carried out the power adjustment to the EoC terminal equipment in judgement, power is adjusted parameter send to the EoC terminal equipment.
In this step, the EoC headend can be adjusted signaling as power by the dedicated signaling of embodiment of the invention setting, power is adjusted parameter send to the EoC terminal equipment.
After this, the EoC terminal equipment can adopt adjusted power to carry out transfer of data.
But the above flow process cycle carries out, or triggers execution based on trigger mechanisms such as incidents.For example, but the trigger event of signalization performance, no longer meet the requirements (error rate threshold value or the error rate upper limit that are higher than setting as the error rate) in case the EoC headend detects the signal performance of EoC terminal equipment transmission, corresponding EoC terminal equipment is carried out power control thereby promptly trigger this incident.
Based on identical technical conceive, the embodiment of the invention also provides a kind of EoC headend, and this equipment can be applicable to above-mentioned flow process.
As shown in Figure 7, the EoC headend that provides of the embodiment of the invention can comprise:
In the above-mentioned EoC headend, detection module 701 can insert in the described EoC headend process at described EoC terminal equipment and detect; Accordingly, power control module 702 can insert in the described EoC headend process at described EoC terminal equipment, according to detection module 701 detected signal performances and default signal performance threshold decision needs described EoC headend is being carried out carrying out when power is adjusted the power adjustment.
In the above-mentioned EoC headend, detection module 701 detects when can be after described EoC terminal equipment inserts described EoC headend carrying out transfer of data with this EoC terminal equipment; Accordingly, when power control module 702 can be after described EoC terminal equipment inserts described EoC headend carries out transfer of data with this EoC terminal equipment, described EoC headend is being carried out carrying out when power is adjusted the power adjustment according to detected signal performance of described detection module and default signal performance threshold decision needs.
Comprise at described signal performance under the situation of error rates of data, when the power control module 702 in the above-mentioned EoC headend can be worked as the detected error rate and is higher than error rate threshold value, judge the transmitting power that needs to improve the EoC terminal equipment; Perhaps,
When the detected error rate is higher than error rate upper limit threshold, judge the transmitting power that needs to improve the EoC terminal equipment; When being lower than error rate lower threshold, the detected error rate judges the transmitting power that needs to reduce the EoC terminal equipment.
Also comprise at described signal performance under the situation of signal to noise ratio, power control module 702 in the above-mentioned EoC headend can should satisfy minimum requirements and the principle of adjusted power between the power bound according to the error rate of carrying out the adjusted signal of power, and determines the performance number that needs are adjusted according to detected Line Attenuation and signal to noise ratio; And, the performance number of the needs adjustment determined is sent to described EoC terminal equipment.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a station terminal equipment (can be mobile phone, personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked protection scope of the present invention.
Claims (10)
1. a coaxial ethernet device Poewr control method is characterized in that, may further comprise the steps:
The Line Attenuation and the signal performance of the signal that coaxial Ethernet EoC headend detection EoC terminal equipment is sent;
Whether needs carry out the power adjustment to described EoC headend to described EoC headend with default signal performance threshold decision according to detected signal performance, and when needs carry out the power adjustment, according to the Line Attenuation and the signal performance of described EoC terminal equipment, the transmitting power of described EoC terminal equipment is adjusted.
2. the method for claim 1, it is characterized in that, described EoC headend is in the process that inserts described EoC terminal equipment, if according to detected signal performance and default signal performance threshold decision needs described EoC headend is carried out the power adjustment, then the transmitting power of described EoC terminal equipment is adjusted; Or/and,
When described EoC headend carries out transfer of data with this EoC terminal equipment after inserting described EoC terminal equipment, if according to detected signal performance and default signal performance threshold decision needs described EoC headend is carried out the power adjustment, then the transmitting power of described EoC terminal equipment is adjusted.
3. method as claimed in claim 1 or 2 is characterized in that described signal performance comprises error rates of data;
Described EoC headend judges whether and need carry out the power adjustment to described EoC headend, is specially:
When the detected error rate of described EoC headend is higher than error rate threshold value, judge the transmitting power that needs to improve the EoC terminal equipment; Perhaps,
When the detected error rate of described EoC headend is higher than error rate upper limit threshold, judge the transmitting power that needs to improve the EoC terminal equipment; When being lower than error rate lower threshold, the detected error rate judges the transmitting power that needs to reduce the EoC terminal equipment.
4. method as claimed in claim 3 is characterized in that described signal performance also comprises signal to noise ratio;
Described Line Attenuation and signal performance according to described EoC terminal equipment are adjusted the transmitting power of described EoC terminal equipment, are specially:
Described EoC headend should satisfy minimum requirements and the principle of adjusted power between the power bound according to the error rate of carrying out the adjusted signal of power, and determines the performance number that needs are adjusted according to detected Line Attenuation and signal to noise ratio;
The performance number of the needs adjustment that described EoC headend will be determined sends to described EoC terminal equipment.
5. method as claimed in claim 2, it is characterized in that, described EoC headend receives the access request message that described EoC terminal equipment sends in the process that inserts described EoC terminal equipment, carry the current power parameter of described EoC terminal equipment in the described access request message;
The Line Attenuation of the signal that described EoC headend detection EoC terminal equipment is sent comprises:
Described EoC headend is according to the power parameter that carries in the described access request message, and detected signal strength signal intensity when receiving this access request message, determines the Line Attenuation of the signal that this EoC terminal equipment is sent.
6. an EoC headend is characterized in that, comprising:
Detection module is used to detect the Line Attenuation and the signal performance of the signal that the EoC terminal equipment sent;
Power control module, be used for whether needs carry out the power adjustment to described EoC headend with default signal performance threshold decision according to the detected signal performance of described detection module, and when needs carry out the power adjustment, according to the Line Attenuation and the signal performance of described EoC terminal equipment, the transmitting power of described EoC terminal equipment is adjusted.
7. EoC headend as claimed in claim 6 is characterized in that,
Described detection module specifically is used for, and inserts in the described EoC headend process at described EoC terminal equipment and detects;
Described power control module specifically is used for, insert in the described EoC headend process at described EoC terminal equipment, described EoC headend is being carried out carrying out when power is adjusted the power adjustment according to detected signal performance of described detection module and default signal performance threshold decision needs.
8. EoC headend as claimed in claim 6 is characterized in that,
Described detection module specifically is used for, and detects when carrying out transfer of data with this EoC terminal equipment after described EoC terminal equipment inserts described EoC headend;
Described power control module specifically is used for, when after described EoC terminal equipment inserts described EoC headend, carrying out transfer of data, described EoC headend is being carried out carrying out when power is adjusted the power adjustment according to detected signal performance of described detection module and default signal performance threshold decision needs with this EoC terminal equipment.
9. as each described EoC headend of claim 6 to 8, it is characterized in that described signal performance comprises error rates of data;
Described power control module specifically is used for, and when the detected error rate is higher than error rate threshold value, judges the transmitting power that needs to improve the EoC terminal equipment; Perhaps,
When the detected error rate is higher than error rate upper limit threshold, judge the transmitting power that needs to improve the EoC terminal equipment; When being lower than error rate lower threshold, the detected error rate judges the transmitting power that needs to reduce the EoC terminal equipment.
10. EoC headend as claimed in claim 9 is characterized in that described signal performance also comprises signal to noise ratio;
Described power control module specifically is used for, should satisfy minimum requirements and the principle of adjusted power between the power bound according to the error rate of carrying out the adjusted signal of power, and determine the performance number that needs are adjusted according to detected Line Attenuation and signal to noise ratio; And, the performance number of the needs adjustment determined is sent to described EoC terminal equipment.
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| CN2010105008622A CN101964679A (en) | 2010-10-09 | 2010-10-09 | Ethernet over Coax equipment power control method and device thereof |
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| CN2010105008622A CN101964679A (en) | 2010-10-09 | 2010-10-09 | Ethernet over Coax equipment power control method and device thereof |
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