CN101170321B - Ethernet transmission device - Google Patents
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- CN101170321B CN101170321B CN2006101499898A CN200610149989A CN101170321B CN 101170321 B CN101170321 B CN 101170321B CN 2006101499898 A CN2006101499898 A CN 2006101499898A CN 200610149989 A CN200610149989 A CN 200610149989A CN 101170321 B CN101170321 B CN 101170321B
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Abstract
The invention discloses an Ethernet transmission device, including at least two single-pair differential interfaces serving the same physical port and at least two two-line receiving-transmitting channels corresponding with the single-pair differential interfaces. The transmission speed of each of the two channels should be equal to or lower than 100 mega. The channels should include an alternative disturbance offsetting unit to eliminate the impact on the receiving signals of the channels from other channels through local signals of the corresponding single-pair differential interface. The invention can support the parallel bundled transmission of multiple differential lines under the two-line mode, and is compatible with the current standard four-line transmission mode.
Description
Technical field
The present invention relates to the ethernet communication field, relate in particular to a kind of Ethernet transmitting device.
Background technology
The transmission of the 10/100M Ethernet of existing standard, employing be four lines (two pairs) transmission technologys, a differential lines sends Ethernet data to being exclusively used in from this locality to the opposite end, the another one differential lines is to being exclusively used in the signal of reception from the opposite end.And then in the existing 10/100M Ethernet transmission technology, each Ethernet physical port needs two pairs of differential lines to carry out data transmit-receive at least, so the cable resource that takies is also more.
For this reason, the applicant is 200610099454.4 at application number, name is called in the patent application document of " a kind of Ethernet transmitting device and method that is lower than the gigabit transmission rate that be suitable for " and has proposed a kind of two line Ethernet transmission technologys that are lower than the gigabit transmission rate, and each physical port only uses a pair of differential lines to finish simultaneously and receives and the transmission task.Particularly, a list is to comprising in the two corresponding line transceiver channels of differential lines interface (being connected in the interface of a pair of differential lines) in order to separate the channel separation unit of transmission and receive path, when PHY chip operation during in the full-duplex communication pattern, described channel separation unit is the Echo Cancellation unit, is used for according to from single received signal that the differential lines interface is obtained with mail to this list this locality transmission signal of differential lines interface is restored end signal; When PHY chip operation during in half duplex mode of communication, described channel separation unit is the collision detection unit, be used to detect on a pair of differential lines of list to the connection of differential lines interface whether have signal conflict,, then suspend to single differential lines interface transmitting locally transmission signal if there is conflict.Because each physical port is as long as a differential lines is to just realizing being lower than the Ethernet transmission of gigabit transmission rate, the cable resource has been saved in therefore existing relatively 10/100M Ethernet transmission.
Because the transmission range of the high more correspondence of transmission rate is just short more, therefore how utilizing the two line Ethernet transmission technologys that are lower than the gigabit transmission rate to improve transmission range or utilize lower cost to reach more high transfer rate on the basis that guarantees certain transmission rate, then is the problem that urgent hope solves.In addition, existing Ethernet transmits under the mode of 4 pairs of lines that still are confined to prescribed by standard, speed can't be shared to more line on go, this be on the one hand the thinking direction of prior art be confined to standard framework down due to, do not search out the problem of the big logarithm cable of suitable solution cost on the other hand, last, the speed grade of existing Ethernet is confined under the 10/100/1000M Three Estate, there is not middle-bracket speed, 30M for example, 500M.And in the actual networking application, the 100M deficiency often appears, (and 1000M often needs optical transmission to the too many situation of 1000M, cost is higher, and need the acquisition optical fibre installation to permit), can't realize the reasonable resources configuration, the user can't be pressed close to the product of its demand most.
Summary of the invention
The problem to be solved in the present invention provides a kind of Ethernet transmitting device, this device can realize being under the jurisdiction of the list of a plurality of transmitting-receiving conllinear of same physical port to the parallel binding transmission of differential lines, reaches thus guaranteeing can realize farther transmission on the identical traffic rate basis or utilize lower cost to realize higher transmission rate.
For solving the problems of the technologies described above, the objective of the invention is to be achieved through the following technical solutions: a kind of Ethernet transmitting device, comprise that at least two lists of serving same physical port are to differential lines interface and at least two two line transceiver channels corresponding to the differential lines interface with list, the transmission rate of described each two line transceiver channel is equal to or less than 100,000,000, receive path in each two line transceiver channel all comprises the cross interference offset unit, sends the influence of signal to above-mentioned receive path received signal in order to eliminate from other transceiver channels and through the single this locality to the transmission of differential lines interface of correspondence.
Preferably, described cross interference offset unit specifically comprises to be disturbed the estimation subelement and offsets subelement, wherein, disturb the estimation subelement, this passage is received the interference signal that causes in order to send signal estimation according to all the other single this locality that two line sendaisles of differential lines interface correspondence are provided; Offset subelement, in order to balance out above-mentioned interference signal the signal that receives from this passage.
Preferably, also comprise the time-delay alignment unit, in order to the propagation delay time difference of the received signal of eliminating different receive channels.
Preferably, also comprise control unit, switch in order to the selection of controlling between two lines and arq mode and the standard four line transmission modes.
Preferably, described control unit comprises the channel selecting subelement, in order to sendaisle and the receive path under the choice criteria four line transmission modes in a plurality of two line transceiver channels.
Preferably, under standard four line transmission modes, all the other two line sendaisles that are not chosen as sendaisle are in off state, and all the other two line receive paths that are not chosen as receive path are in off state.
Preferably, described control unit comprises the cross interference control sub unit, closes under standard four ray modes and opens under two lines and arq mode in order to control cross interference offset unit.
Preferably, described control unit comprises time-delay alignment control sub unit, closes under standard four ray modes and opens under two lines and arq mode in order to control time-delay alignment unit.
Preferably, described two line transceiver channels comprise in order to separate the channel separation unit of transmission and receive path, described control unit comprises the channel separation control sub unit, closes under standard four ray modes and opens under two lines and arq mode in order to the control channel separative element.
Preferably, described channel separation unit is Echo Cancellation unit under the full-duplex communication pattern or the collision detection unit under the half duplex mode of communication.
Preferably, comprise that single number to the differential lines interface is more than or equal to 5.
Preferably, described list is telephone wire to the differential lines interface at the external cable of physical port.
Above technical scheme as can be seen, a plurality of in the present invention two line transceiver channel parallel transmission data, and each receive path is provided with the cross interference offset unit, can eliminate through all the other single this locality and send the influence of signal this channel receiving signal to the transmission of differential lines interface, thereby realize under the two line transmission modes, multi-thread to parallel binding transmission, improved transmission rate, can realize the transmission of the two-forty that cost is very low in conjunction with the idle telephone wire resource of existing operator, and with respect to traditional electrical transmission, owing to the speed ratio that transmits on the every line is lower, therefore the distance of transmission improves greatly, and demand pairs also no longer are subjected to the restriction of four pairs of lines of standard.
Further, eliminate the propagation delay time difference of different receive channel signals, make that the coherent signal in each receive path can align in time by the time-delay alignment unit is set.
Further,, make Ethernet transmitting device of the present invention can either realize the parallel binding transmission of two lines by control unit is set, again can compatible existing standard four line Ethernet transmission technologys.
Description of drawings
Fig. 1 is the Ethernet transmitting device first preferred embodiment structural representation of the present invention;
Fig. 2 Ethernet transmitting device second preferred embodiment structural representation of the present invention;
Fig. 3 Ethernet transmitting device the 3rd preferred embodiment structural representation of the present invention;
Fig. 4 Ethernet transmitting device the 4th preferred embodiment structural representation of the present invention.
Embodiment
See also 1, it is the Ethernet transmitting device first preferred embodiment structural representation of the present invention.PHY chip in the present embodiment is corresponding to Ethernet transmitting device of the present invention, and this PHY chip can work in the full-duplex communication mode.The PHY chip mainly comprises first liang of line sendaisle 11, first liang of line receive path 12, second liang of line sendaisle 14 and second liang of line receive path 13.Wherein, the transmission rate of two line transceiver channels is equal to or less than 100M.
First liang of line sendaisle 11 and first liang of line receive path 12 are single to differential lines interface 15 corresponding to first, second liang of line sendaisle 14 and second liang of line receive path 13 are single to differential lines interface 16 corresponding to second, first list is served a physical port (being same user) to the differential lines interface 15 and second list to differential lines interface 16, and respectively is connected with a pair of difference transmission lines.With regard to the Ethernet transmitting device of chip-scale, described list is usually expressed as the pin of PHY chip physically to the differential lines interface.
First is single to the first liang line transceiver channel of differential lines interface 15 corresponding to first liang of line sendaisle 11 and first liang of line receive path 12 formation, and second is single to the second liang line transceiver channel of differential lines interface 16 corresponding to second liang of line sendaisle 14 and second liang of line receive path 13 formation.When the PHY chip is in running order, first liang of line transceiver channel and second liang of line transceiver channel are in order to the parallel transmission data, because first list is served same physical port to the differential lines interface 15 and second list to differential lines interface 16, promptly be directed to same user, therefore be equivalent to differential lines that above-mentioned two interfaces connect separately to binding transmission data, thereby accelerated transmission rate.
Because every pair of differential lines all is not only to be used for receiving but also be used for sending, and promptly is operated in two line transmission modes, so each single transceiver channel to differential lines interface correspondence all is two line transceiver channels.Need explanation, because what the present invention is directed to is how to adopt two line transmission modes to bundle transmission to improve the problem of transmission rate, therefore, specifically introduce in the back in the two line transceiver channels, only at essence of the present invention relate to, unlike the prior art construction unit elaborates, for the present invention and be indifferent to existing identical construction unit and do not do explanation, for example in the transceiver channel transmission signals is carried out the unit (as various codec unit etc.) of conventional physical layer process.
With regard to present embodiment, each single receive path to differential lines interface correspondence all comprises Echo Cancellation unit and cross interference offset unit, with first single two line transceiver channels to differential lines interface 15 and correspondence thereof is example, and first liang of line receive path 12 comprises the first Echo Cancellation unit 121 and the first cross interference offset unit 122.Particularly, send the influence of signal by 121 eliminations of the first Echo Cancellation unit through first single this locality to this channel receiving signal to differential lines interface 15 (being that this list is to the differential lines interface) transmission, send the influence of signal by 122 eliminations of the first cross interference offset unit through second single this locality, introduce in detail respectively below this channel receiving signal to differential lines interface 16 (being that all the other are single to the differential lines interface) transmission.
As can be seen from the figure, the first Echo Cancellation unit 121 in first liang of line receive path 12 can obtain mail to first single this locality to differential lines interface 15 from first liang of line sendaisle 11 and send signal, in other words, first liang of line sendaisle 11 transfers to first single first Echo Cancellation unit 121 that also offered simultaneously during to differential lines interface 15 this locality being sent signal.Those skilled in the art will know that, under two line transmission modes, first liang of line receive path 12 is that end signal and this locality are sent the mixed signal that signal is superimposed from first single received signal that differential lines interface 15 is obtained at least, therefore enter that to comprise that not only the opposite end sends in the received signal of the first Echo Cancellation unit 121 original in end signal, comprise that at least also mailing to first single this locality to differential lines interface 15 sends signal.Because also obtaining to mail to first single this locality to differential lines interface 15 from first liang of line sendaisle 11, the first Echo Cancellation unit 121 sends signal again, therefore according to existing Digital Signal Processing (DSP) technology, the first Echo Cancellation unit 121 can balance out this locality of mailing to this interface from it and send signal from first single mixing received signal that differential lines interface 15 is obtained.
Aforementioned mentioning, first list is served same physical port to the differential lines interface 15 and second list to differential lines interface 16, their each self-corresponding a pair of differential lines bundled services are in same user, since line between be not shielding, so these two pairs of difference transmission lines are because the phase mutual interference that electromagnetic interference can produce signal.Particularly, when sending signal through second single this locality and on differential lines, transmitting to 16 transmission of differential lines interface, can be to last received signal being caused interference with first single differential lines that differential lines interface 15 is connected, otherwise in like manner.Further, first liang of line receive path 12 also comprises through second single this locality to 16 transmission of differential lines interface in first single received signal that differential lines interface 15 is obtained and sends signal to its interference signal that causes, otherwise in like manner.
In order to address the above problem, the cross interference offset unit is set in each receive path, send the influence of signal in order to eliminate to this channel receiving signal through all the other single this locality to the transmission of differential lines interface.With first liang of line receive path 12 is example, after first single received signal that differential lines interface 15 is obtained is handled through the first Echo Cancellation unit 121, eliminated this to sending the influence of signal on the differential lines to this channel receiving signal, after this, entering the first cross interference offset unit 122 handles.
The first cross interference offset unit 122 specifically comprises to be disturbed the estimation subelement and offsets subelement.Wherein, disturb the estimation subelement to obtain to mail to second single this locality and send signal differential lines interface 16 from second liang of line sendaisle 14, and according to this signal and be connected to first single relevant physical parameter to differential lines interface 15 and second single two pairs of difference transmission lines to differential lines interface 16, estimation sends signal through second single this locality to 16 transmission of differential lines interface first liang of line receive channel 12 is received the interference signal that causes.The relevant physical parameter of difference transmission lines only mainly is meant self physical parameter of relative distance between two pairs of differential lines and line or the like.
And then, again by offsetting subelement according to signal processing technologies such as DSP, in first single received signal that differential lines interface 15 is obtained, balance out the interference signal of disturbing the estimation subelement to provide, promptly eliminate through second single this locality and send the influence that signal causes first liang of line receive path 12 received signal 16 transmission of differential lines interface.
By above-mentioned analysis as can be known, first liang of line receive path 12 is after first list is to differential lines interface 15 picked up signal, offset this to sending interference on the differential lines by the first Echo Cancellation unit 121 to receiving, then by the first cross interference offset unit 122 offset other line differential lines to last transmission to of the interference of this differential lines to receiving, after this received signal of Huo Deing is original opposite end transmission signal substantially.This shows,, solved the many of binding transmission, make multi-thread under two ray modes parallel transmission to be achieved, improved transmission rate the mutual interference problem of transmission signals on the differential lines by the setting of cross interference unit in the two line receive paths.
See also 2, it is the Ethernet transmitting device second preferred embodiment structural representation of the present invention.The difference part of the present embodiment and first embodiment is, PHY chip in the present embodiment can be operated under the half duplex mode of communication, promptly only receive not send out or only send out and do not receive (sending and receiving are not simultaneously), and the PHY chip among first embodiment can be operated in the full-duplex communication pattern, i.e. transmitting-receiving simultaneously.The variation of communication pattern, cause the first Echo Cancellation unit 121 in first liang of line receive path 12 to be replaced by the first collision detection unit 123, correspondingly, the second Echo Cancellation unit 131 in second liang of line receive path 13 is replaced by the second collision detection unit 133.Repeat no more about two identical contents such as cross interference offset unit of embodiment.
The main purpose that the collision detection unit is set is to guarantee can not send local signal to difference transmission lines to this, and then satisfy the requirement of half duplex mode of communication when this receives end signal to difference transmission lines.In actual applications, the collision detection implementation is a lot, for example carries out collision detection according to the amplitude of voltage signal, if this is to existing the mixed signal of stack on the differential lines, the amplitude of the amplitude of voltage signal and normal signal has than big difference so; For example first single signal that differential lines interface 15 is received and first liang of line sendaisle 14 are sent to first single this locality again and send signal and compare, whether consistently differentiate differential lines interface 15.If consistent, prove not conflict, illustrate that first single differential lines that differential lines interface 15 is connected is to the last signal that does not exist the opposite end to transmit; If inconsistent, illustrate first single differential lines that differential lines interface 15 is connected on have the opposite end to transmit signal, promptly exist on the differential lines and conflict.
In a word, if the collision detection unit detects this to there being conflict on the difference transmission lines, then Dui Ying two line sendaisles stop Xiang Bendan to differential lines interface transmission data, and do randomized delayed delivery and handle, and two ends send the possibility of conflict again when sending once more to reduce.In other words, whether the transmission of two line sendaisles is subjected to the influence of collision detection unit.
By first, second embodiment as can be known, no matter the PHY chip is to be operated in two line full-duplex communication patterns, still be operated in two line half-duplex mode of operations,, all need in two line receive paths, the cross interference unit be set in order to reach multi-thread purpose to the binding transmission.Though above specific embodiment all is with two pairs of differential lines binding transmission, promptly two lists are the explanation that example is carried out to the differential lines interface service in same physical port, but those skilled in the art are to be appreciated that, can realize three pairs according to identical principle, four pairs even more differential lines is bundled transmission under two ray modes, and then make Ethernet transmitting device of the present invention can support higher transmission rate, and the overall transmission rate that can reach is very flexible, for example, every couple of differential lines transmission 100M, 3 pairs of differential lines binding parallel transmissions can reach 300M, 5 pairs of differential lines binding parallel transmissions can reach 500M, in like manner can reach 700M, 800M or the like.In addition, comparing with existing 10/100M self adaptation PHY chip, if transmission rate is identical, for example all are 100M, if the present invention adopts the parallel binding transmission of 5 pairs of lines, the transmission rate that then only need share 20M on the every pair of line gets final product, those skilled in the art will know that, the high more corresponding transmission range of transmission rate is short more on every pair of line, because the transmission rate of every pair of line of present embodiment PHY chip is 20M, and the transmission rate of existing every pair of line is 100M, therefore apparent, under the identical situation of overall transmission rate, the four line electrical transmission that the two line parallel transmissions that adopt PHY chip of the present invention to carry out carry out than the traditional 10/100M self adaptation PHY chip of employing, not only saved the cable resource, and can transmit farther, in addition because telecom operators have a large amount of idle telephone wire resources, it is more multi-thread right to realize, low transmission rate more, under preferable mode, can far surpass existing Ethernet transmission range, from the angle of the rational distribution of resources, the present invention can utilize provides the Ethernet of more speed grade transmitting device, such as 50M, 300M, 600M or the like, the user can more be pressed close to the selection of its real demand, has enriched the Ethernet produce market, owing to there being a large amount of idle telephone wires, therefore the cost from cable does not only rise reduction on the contrary a lot.
Further, because binding transmission is how might parameter not quite identical to differential lines, for example the length of line strict conformance not can bring different propagation delay times thus.Again because the many of binding transmission are used to transmit same user's data to differential lines, therefore be correlated with between them, if from the signal propagation delay time difference that not collinear butt joint is received, just might cause the data of the data that send and reception inconsistent, i.e. garble.
Therefore, preferred, in each two line receive path, the time-delay alignment unit is set, in order to the propagation delay time difference of the received signal of eliminating different receive channels.Please in conjunction with consulting Fig. 3, it is Ethernet transmitting device the 3rd a preferred embodiment structural representation of the present invention.The main distinction part of the present embodiment and first preferred embodiment is that present embodiment was provided with time-delay alignment unit 17 before first liang of line receive path 12 and second liang of line receive path 13.For the present embodiment part identical, repeat no more with first embodiment.
Particularly, from first single received signal that differential lines interface 15 is obtained with all be introduced into time-delay alignment unit 17 from second single received signal that differential lines interface 16 is obtained and handle, eliminate the difference on the propagation delay time.If propagation delay time exists, be not complete matching from two lists in time to the data that the differential lines interface writes the time-delay alignment unit so, but to after writing data earlier and carrying out the buffer memory of special time, can reach the alignment purpose during from time-delay alignment unit sense data to the first liang line receive path 12 and second liang of line receive path 13 by the time-delay alignment unit.After this, the signal that enters first liang of line receive path 12 and second liang of line receive path 13 is handled according to content described in first embodiment, repeats no more herein.
Which kind of further, owing to dispose PHY chip in every ethernet device actually, normally decide according to its applied environment demand in the future.But, the applied environment of an ethernet device can be not unalterable, for example, the transmission means that opposite end transmission equipment change causes the opposite end transmission equipment to be supported changes, suppose that the PHY chip of original opposite end transmission equipment supports two line transmission modes, and new opposite end transmission equipment is supported standard four line transmission modes.For this reason, the applicant also discloses a kind of Ethernet transmitting device, not only supports multi-thread under two ray modes to binding and pass, can also compatibility standard four line transmission modes.See also Fig. 4, it is for the structural representation of a kind of Ethernet transmitting device the 4th preferred embodiment of the present invention.
As can be seen from the figure, the difference part of present embodiment and the 3rd embodiment mainly is, the PHY chip internal also comprises the control unit 18 with each two line transceiver channels coupling, and described control unit 18 switches in order to the selection of controlling between two lines and arq mode and the standard four line transmission modes.Control unit 18 specifically comprises channel selecting subelement 181, Echo Cancellation control sub unit 182, cross interference control sub unit 183 and time-delay alignment control sub unit 184.
When the transmission mode of selecting the PHY chip is two lines and when passing, the Echo Cancellation unit that Echo Cancellation control sub unit 182 is opened in each two line receive path makes it in running order; Cross interference control sub unit 183 is opened the cross interference offset unit, makes it in running order; Time-delay alignment control sub unit 184 is opened the time-delay alignment unit, makes it in running order.
When two lines and arq mode switch to standard four ray modes, select between the two line transceiver channels of two lists by channel selecting subelement 181 differential lines interface correspondence, particularly, be in many two line receive paths, to select wherein one as the receive path under the standard four line transmission modes, and in many two line sendaisles, select wherein one as the sendaisle under the standard four line transmission modes, it is noted that receive path and sendaisle under the standard four line transmission modes do not correspond to same list to the differential lines interface.As for how to select, both can dispose by the user, the selection mode of an acquiescence also can be set.
For example, select first liang of line sendaisle 11, promptly send signal by first single differential lines subtend opposite end transmitting locally to differential lines interface 15 and connection thereof as the sendaisle under the standard four line transmission modes; Select second liang of line receive path 13 as the receive path under the standard four line transmission modes, promptly by second single to differential lines interface 16 and the differential lines that connects thereof to receiving signal from the opposite end.Then be in off state for unchecked two line sendaisles and receive path.In addition, when when two lines and arq mode switch to standard four ray modes, Echo Cancellation control sub unit 182 also need be closed the Echo Cancellation unit in the two line receive paths, cross interference control sub unit 183 is closed the cross interference offset unit, and time-delay alignment control sub unit 184 is closed the time-delay alignment unit.
Need explanation, for complete compatible existing standard four lines transmission, the cross interference control sub unit can be set under standard four line transmission modes, close the cross interference offset unit, but in the practical application, in order to reach reception preferably, also can under four line transmission modes, still keep the cross interference offset unit in running order, in this case, promptly need not in control unit, to be provided with the cross interference control sub unit.In addition, if the PHY chip does not comprise the time-delay alignment unit, do not need to be provided with time-delay alignment control sub unit so in the control unit naturally yet.
In addition, though above-mentioned the 3rd preferred embodiment and the 4th preferred embodiment are to be the explanation that carry out on the basis with first embodiment, but the control unit that increases newly in time-delay alignment unit that increases newly in the 3rd preferred embodiment and the 4th preferred embodiment is equally applicable to be operated in second preferred embodiment PHY chip of half duplex mode of communication, the realization principle is identical, repeats no more.
And, those skilled in the art will recognize that, though above-mentioned each preferred embodiment is that example illustrates Ethernet transmitting device of the present invention with two differential lines to also passing just, but be based on same principle, Ethernet transmitting device of the present invention (as the PHY chip) can comprise plural two line transceiver channels, correspondingly, the two line transceiver channels of serving same physical port can be 3,4 even more, thereby realize 3 pairs, four pairs even more to differential lines parallel binding transmission under two line transmission modes.
Ethernet transmitting device in a plurality of better embodiment that more than provide can utilize existing idle telephone wire as transmission medium, and promptly the described list of various embodiments of the present invention is telephone wire to the differential lines interface at the external cable of physical port.At present, a lot of telephone wires, particularly town dweller have been laid by telecom operators, and a lot of families in fact all use two telephone wires to register one's residence, and most family has only used one.This that is to say the user to a lot of telephone wires between the telecommunication bureau all in idle state.And then, telecommunication bureau can adopt many telephone wire binding transmission Ethernet datas to user side, for existing four line transmission modes, under the identical situation of the total speed of transmission, because it is lower that the present invention bundlees the transmission rate of sharing on when transmission every pair of line, therefore can transmit farther distance generally.
On the other hand, the binding transmission can provide higher transmission rate on the basis that guarantees transmission rate.Such situation also may appear at interconnected between the building, and traffic carrying capacity is big, has a lot of telephone wires to leave unused between the building again, adopt technical scheme provided by the invention, then can effectively utilize idle telephone wire resource, when guaranteeing transmission range, improve transmission rate.
More than Ethernet transmitting device provided by the present invention is described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (11)
1. Ethernet transmitting device, comprise that at least two lists of serving same physical port are to differential lines interface and at least two two line transceiver channels corresponding to the differential lines interface with list, the transmission rate of described each two line transceiver channel is equal to or less than 100,000,000, it is characterized in that: the receive path in each two line transceiver channel all comprises the cross interference offset unit, sends the influence of signal to above-mentioned receive path received signal in order to eliminate from other transceiver channels and through the single this locality to the transmission of differential lines interface of correspondence;
Described two line transceiver channels also comprise: in order to separate the channel separation unit of transmission and receive path; Described channel separation unit is Echo Cancellation unit under the full-duplex communication pattern or the collision detection unit under the half duplex mode of communication.
2. Ethernet transmitting device as claimed in claim 1 is characterized in that: described cross interference offset unit specifically comprises to be disturbed the estimation subelement and offsets subelement, wherein,
Disturb the estimation subelement, this passage is received the interference signal that causes in order to send signal estimation according to all the other single this locality that two line sendaisles of differential lines interface correspondence are provided;
Offset subelement, in order to balance out above-mentioned interference signal the signal that receives from this passage.
3. Ethernet transmitting device as claimed in claim 1 is characterized in that: also comprise the time-delay alignment unit, in order to the propagation delay time difference of the received signal of eliminating different receive channels.
4. as any described Ethernet transmitting device in the claim 1 to 3, it is characterized in that: also comprise control unit, switch in order to the selection of controlling between two lines and arq mode and the standard four line transmission modes.
5. Ethernet transmitting device as claimed in claim 4 is characterized in that: described control unit comprises the channel selecting subelement, in order to sendaisle and the receive path under the choice criteria four line transmission modes in a plurality of two line transceiver channels.
6. Ethernet transmitting device as claimed in claim 5, it is characterized in that: under standard four line transmission modes, all the other two line sendaisles that are not chosen as sendaisle are in off state, and all the other two line receive paths that are not chosen as receive path are in off state.
7. Ethernet transmitting device as claimed in claim 4 is characterized in that: described control unit comprises the cross interference control sub unit, closes under standard four ray modes and opens under two lines and arq mode in order to control cross interference offset unit.
8. Ethernet transmitting device as claimed in claim 4 is characterized in that: described control unit comprises time-delay alignment control sub unit, closes under standard four ray modes and opens under two lines and arq mode in order to control time-delay alignment unit.
9. Ethernet transmitting device as claimed in claim 4 is characterized in that: described control unit comprises the channel separation control sub unit, closes under standard four ray modes and opens under two lines and arq mode in order to the control channel separative element.
10. Ethernet transmitting device as claimed in claim 1 is characterized in that, comprises that single number to the differential lines interface is more than or equal to 5.
11., it is characterized in that described list is telephone wire to the differential lines interface at the external cable of physical port as claim 1 or 10 described Ethernet transmitting devices.
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| CN2006101499898A CN101170321B (en) | 2006-10-25 | 2006-10-25 | Ethernet transmission device |
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| EP2802084B1 (en) | 2012-02-03 | 2016-08-31 | Huawei Technologies Co., Ltd. | Method, related device and system for processing crosstalk cancelling on port line of access device |
| CN104158822A (en) * | 2014-08-29 | 2014-11-19 | 中国航空无线电电子研究所 | Point-to-point transmission system of optical fiber links based on dual-channel binding and transmission method |
| CN107438039A (en) * | 2016-05-25 | 2017-12-05 | 中兴通讯股份有限公司 | A kind of digital offset signal method and device with frequency simultaneously |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267408A (en) * | 1997-05-16 | 2000-09-20 | 夸尔柯姆股份有限公司 | Method of and apparatus for detecting and preventing message collisions in communication system |
| CN1481085A (en) * | 2002-09-06 | 2004-03-10 | 北京格林威尔科技发展有限公司 | Optic transmission devices for hybrid network |
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| Publication number | Publication date |
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| CN101170321A (en) | 2008-04-30 |
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Address after: 310052 Binjiang District Changhe Road, Zhejiang, China, No. 466, No. Patentee after: Xinhua three Technology Co., Ltd. Address before: 310053 Hangzhou hi tech Industrial Development Zone, Zhejiang province science and Technology Industrial Park, No. 310 and No. six road, HUAWEI, Hangzhou production base Patentee before: Huasan Communication Technology Co., Ltd. |
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Granted publication date: 20101110 Termination date: 20201025 |