CN100563192C - Radio transmission facility - Google Patents
Radio transmission facility Download PDFInfo
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- CN100563192C CN100563192C CNB200510007001XA CN200510007001A CN100563192C CN 100563192 C CN100563192 C CN 100563192C CN B200510007001X A CNB200510007001X A CN B200510007001XA CN 200510007001 A CN200510007001 A CN 200510007001A CN 100563192 C CN100563192 C CN 100563192C
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- website
- circuit
- signal
- radio transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/30—Connection release
Abstract
The invention provides following function: if in any of up link or down link, link interference occurs, then force to disconnect the data link of the continuous Wired transmission path of two relative with passing through radio transmission path respectively radio transmission facilities, if and disconnect respectively any link with the Wired transmission path that links to each other by the relative radio transmission facility of radio transmission path, then disconnect the data link of the Wired transmission path that links to each other with the other side's radio transmission facility.
Description
Technical field
The present invention relates to a kind of radio transmission facility, wherein will receive from Wired transmission path one to one by radio transmission facility, be sent to the other side's website (station) by IEEE 802.3 standardized interface signals (after this being defined as lan signal), and it is outputed to Wired transmission path from the other side's website once more.
Background technology
After this, the background technology of above-mentioned radio transmission facility will be described below.Simultaneously, JP-A-2000-324153 relates to this background technology as the prior art file.If desired, please refer to this document.
In common lan data communication, should set up two-way communication.Therefore, when utilizing radio transmission path to transmit and receiving in the network of lan signal as the part of transmission path, when occurring disturbing in any in transmission and reception radio transmission path, need notify the function of disturbing to the network equipment of the end opposite that is connected to transmission path.
In addition, in order to carry out LAN communication by radio transmission path, should set up data link at the network equipment that links to each other with described radio transmission facility respectively by radio transmission path two radio transmission facilities respect to one another.When at any radio transmission facility with by between LAN and the network equipment that described radio transmission facility links to each other during broken data link, also need to disconnect data link at the network equipment that links to each other with other radio transmission facilities relative with above-mentioned radio transmission facility on radio.
As the means that solve such problem, with reference to above-mentioned patent document (JP2000-324153).This patent document has proposed a kind of method, the disconnection of the link by detecting twisted-pair cable also transmits the abnormity notifying signal to optical fiber, and the disconnection by detection fiber also stops to provide to the power supply of the twisted-pair cable distribute data interface that is used for changing transducer signal, LAN between twisted-pair cable distribute data interface and the optical fiber interface, and is unusual to the network equipment notice that links to each other with the transducer of LAN.
Yet said method relates to following problem.At first, when interference appears in the optical fiber 504 in the network configuration shown in Figure 1, photoconverter 506 can be by the interference of detection fiber 504 and the link of disconnection twisted-pair cable 507, unusual to switching hub 508 notification transmission paths, yet the switching hub 501 that does not have method to come to be provided with to the data transfer direction according to the optical fiber 505 that does not have to disturb is notified unusual.Therefore, although this relates to such as do not have proper communication between switching hub 501 and switching hub 508, also interference is not notified to the problem of switching hub 501.
In addition, when the disconnection of link occurring at twisted-pair cable 502 places, photoconverter 503 can be reduced to by the through-put power with optical fiber 504 under the predetermined value, should be unusual to photoconverter 506 notices, and when photoconverter 506 had disconnected the link of twisted-pair cable 507, what photoconverter 503 can be to switching hub 508 notification transmission paths was unusual.Yet, from the link that recovers twisted-pair cable 502 the time be carved into the sequence of operation in the moment of the link that recovers twisted-pair cable 507 during, the photoconverter 506 that detects the link disconnection of twisted-pair cable 507 is controlled the through-put power of optical fiber 505, so that it is reduced to the predetermined value of locating in the through-put power stage of recovering optical fiber 504, and photoconverter 506 discharges the control of the link disconnection of twisted-pair cables 507.Therefore, alternately repeat the control that the link of twisted-pair cable 502 disconnects and the control of twisted-pair cable 507, and this has caused can not returning to such as twisted-pair cable 502 and twisted-pair cable 507 problem of normal condition.
Summary of the invention
The objective of the invention is to propose a kind of radio transmission facility that is equipped with the controlling links circuit that addresses the above problem.
According to the present invention, a kind of radio transmission facility has been proposed, link to each other with the other side's radio transmission facility by the uplink and downlink radio transmission path, and link to each other with the network equipment of himself website by himself Wired transmission path.Described radio transmission facility comprises: radio frame synchronous circuit, controlling links circuit and lan signal terminating circuit.When owing in descending radio transmission path, having occurred receiving unusual radio reception signal as the unusual link interference of link, the disconnection alarm signal of radio frame synchronous circuit output down link.Described controlling links circuit utilizes the reception of the disconnection alarm signal of down link, produces and notice compulsion links disconnection control signal.Described lan signal terminating circuit receives compulsion links and disconnects control signal, disconnects the data link of self Wired transmission path, and disturbs to descending and up-link wireless electrical transmission paths notice.
And described radio transmission facility comprises: the radio frame multiplex circuit is used for producing radio transmissioning signal by link being disconnected the overhead area that alarm signal is multiplexed into radio frame.Described radio frame multiplex circuit transmits radio transmissioning signal by radio transmission path to the other side's website radio transmission facility.The remote station spot net equipment that also interference is notified in the reverse link that occurs the reception interference therein, links to each other with the other side's website radio transmission facility.
In addition, described radio transmission facility comprises that the other side's website receives the interference alarm signal and extracts circuit.If interference occurred in the up-link wireless electrical transmission paths, the other side's website receives and disturbs alarm signal to extract circuit by being extracted in the link disconnection information of up link multiplexing in the other side's website transmission equipment, produces and output the other side website interfere information.Receive the other side's website received frame signal by descending radio transmission path from the other side's website radio transmission facility.After receiving the other side's website interfere information, the controlling links circuit produces and the output compulsion links disconnects control signal.The lan signal terminating circuit receives compulsion links and disconnects control signal, forces to disconnect the data link of self Wired transmission path, and to the interference of the network equipment notice uplink and downlink radio transmission path of himself website.
In addition, described radio transmission facility comprises: transmission protection (transferprotecting) circuit is used to detect self website link disconnection information.When in arbitrary Wired transmission path, occurring connecting interference and disconnect under the situation of the data link in the described Wired transmission path, the lan signal terminating circuit that links to each other with Wired transmission path detects the disconnection of the data link in the described Wired transmission path, and then the lan signal terminating circuit produces and output oneself state link disconnection information.When the transmission protective circuit received oneself state link disconnection information, the transmission protective circuit produced link and disconnects transfer signal, and disconnects transfer signal to radio frame multiplex circuit output link.
In addition, described radio transmission facility comprises that the other side's website link disconnects the information extraction circuit.The other side's website link disconnects the information extraction circuit and extracts the other side's website link disconnect transfer signal and disconnect information to produce the other side's website link from the received frame signal that receives by self website radio frame circuit.If having occurred connecting in other Wired transmission paths disturbs and disconnected data link in described other Wired transmission paths, then the other side's website link disconnects the information extraction circuit and exports described the other side's website link to controlling links circuit and transmission protective circuit and disconnect information.The controlling links circuit receives the other side's website link and disconnects information, produces compulsion links and disconnects control signal, and export it.The lan signal terminating circuit receives compulsion links and disconnects control signal, forces to disconnect the data link of a described Wired transmission path, and the interference in the network equipment notice uplink and downlink radio transmission path of himself website.
In addition, masking signal is shifted in output, thereby during detecting the other side's website link disconnection information or till over and done with self website link-down state from release information after time required, prevent the output of link disconnection transfer signal to link establishment.After the over and done with described time, described radio transmission facility stops to shift the output of masking signal.
In addition, described transmission protective circuit has the transfer masking circuit, is used to detect self link and disconnects information, generation and disconnect transfer signal to radio frame multiplex circuit output link; And have the protection timer circuit, described protection timer circuit have during receiving the other side's link disconnection information and from discharge the other side's link disconnect information till over and done with predetermined guard time, output shifts the function of masking signal.
In addition, disturb, then set up the data link of described Wired transmission path if recovered the connection of a described Wired transmission path.The lan signal terminating circuit detects the foundation of data link to discharge self website link disconnection information.Self website transmission protective circuit detects the release that self website link disconnects information and disconnects transfer signal to discharge link, and it is notified to self website radio transmission facility.
In addition, the other side's website link disconnects the information extraction circuit and receives the received frame signal with extraction the other side website link disconnection information by the radio frame synchronous circuit, and the release of detection notice disconnects information to discharge the other side's website link.The controlling links circuit discharges compulsion links and disconnects control signal by receiving the release that the other side's website link disconnects information.The lan signal terminating circuit receives compulsion links and disconnects the release of control signal to set up the link of Wired transmission path.
In addition, between self radio transmission facility and the other side's website radio transmission facility, repeater is set.
According to the present invention, a kind of SDH radio transmission facility has been proposed, link to each other with the other side's radio transmission facility and link to each other with the network equipment of himself website by the uplink and downlink radio transmission path by himself Wired transmission path.Described SDH radio transmission facility comprises: radio frame synchronous circuit, controlling links circuit and lan signal terminating circuit.If link interference occurred and receive unusual radio reception signal in descending radio transmission path, described radio frame synchronous circuit is determined as the unusual link interference of link, and the disconnection alarm signal of output down link.If receive the disconnection alarm signal of down link, described controlling links circuit produces and notice forces to disconnect control signal.Disconnect control signal if receive compulsion links, the lan signal terminating circuit is forced the data link of disconnection self Wired transmission path, and disturbs to descending and up-link wireless electrical transmission paths notice.
In addition, described SDH radio transmission facility also comprises: the SDH multiplexing circuit, be used for disconnecting alarm signal and produce radio transmissioning signal, and transmit described radio transmissioning signal to the other side's website radio transmission facility by radio transmission path by overhead area multiplex link at SDH.The remote station spot net equipment that also described interference is notified in the reverse link that occurs the reception interference therein, links to each other with the other side's website radio transmission facility.
Description of drawings
Fig. 1 shows the figure of traditional whole network system.
Fig. 2 shows the block diagram according to the structure of the radio transmission facility of the embodiment of the invention.
Fig. 3 shows the figure of the embodiment of transmission protective circuit.
Fig. 4 shows the figure that comprises according to the whole radio transmission system of the radio transmission facility of the embodiment of the invention.
Fig. 5 shows and comprises the figure of the whole radio transmission system of radio transmission facility according to another embodiment of the present invention.
Embodiment
After this, use description to realize best mode of the present invention.Fig. 2 shows the block diagram of embodiments of the invention.According to embodiment shown in Figure 2, will be sent to the other side's website one to one by radio transmission path from the lan signal that Wired transmission path receives.
Be used for once more by radio transmission path 3 and 4 toward each other to the radio transmission facility 1a of the lan signal at Wired transmission path output the other side website place and 1b.Radio transmission facility 1a has identical structure with 1b.The part 11b of configuration radio transmission facility 1b to 19b, 51b to 61b corresponding to each the part 11a that disposes radio transmission facility 1a to 19a, 51a to 61a.Here, the structure of radio transmission facility 1a will be described in detail.
In Fig. 2, lan signal terminating circuit 11a can pass through Wired transmission path 2a, sets up the link with the network equipment (not shown) that is connected by LAN in data link layer.During link establishment, to receive data-signal 51a by the LAN that Wired transmission path 2a receives from the network equipment and output to radio frame multiplex circuit 13a (will describe after a while), and from signal extracting circuit 18a, receive LAN transmission of data signals 60a, so that it is outputed to the network equipment by Wired transmission path 2a.
When the link of wired transmission path 2a disconnects, self website link is disconnected information 52a output to transmission protective circuit 12a (will describe after a while).In addition, when from controlling links circuit 19a (will describe after a while), receiving compulsion links disconnection control signal 61a, force the link of the disconnection and the network equipment, and stop the link establishment operation, till having discharged compulsion links disconnection control signal 61a.
Transmission protective circuit 12a can monitor self website link disconnection information 51a and the other side's website link disconnection information 53a (will describe after a while), can produce link cut-off signal 54a, and it can be outputed to radio frame multiplex circuit 13a.
Fig. 3 shows the embodiment of transmission protective circuit 12a (12b).Transmission protective circuit 12a (12b) comprises protection timer circuit 201 and shifts masking circuit 202.
When protection timer circuit 201 is detecting the other side's link disconnection information 53a (53b); and when when release the other side link disconnection information 53a (53b) does not also pass by to be scheduled to guard time afterwards, protection timer circuit 201 can be to shifting masking circuit 202 output masking signals 203.When transfer masking circuit 202 does not also receive masking signal 203, shift masking circuit 202 and can export self website link disconnection information 52a (52b), disconnect transfer signal 54a (54b) as link, and when transfer masking circuit 202 has received masking signal 203, shift masking circuit 202 and can forbid self website link disconnection information 52a (52b), and stop the output that link disconnects transfer signal 54a (54b).
Radio frame multiplex circuit 13a shown in Figure 2 can receive data-signal 51a by multiplexing LAN in the main signal district of the radio frame with self frame structure; described self frame structure comprises the main signal district that is used for multiplexing lan signal and is used for the overhead area of multiplexing various control signals that are used for wireless device etc.; in addition; can be on the overhead area of radio frame; the multiplexing link that receives from transmission protective circuit 12a disconnects transfer signal 54a and link disconnects alarm signal 55a (will describe after a while), to produce and output radio transmissioning signal 56a.
Wireless radio transmission and receiving circuit 14a can export radio transmissioning signal 56a to the other side's radio transmission facility 1b by radio transmission path 3, and the radio reception signal 57a that receives from radio transmission facility by radio transmission path 4 can be outputed to radio frame synchronous circuit 15a (will describe after a while).
Receive radio reception signal 57a from wireless radio transmission and receiving circuit 14a and set up radio frame synchronously after, radio frame synchronous circuit 15a can export received frame signal 58a.When because the generation of any of the interference of the transmission system of interference, wireless radio transmission and the receiving circuit 14a of the receiving system of wireless radio transmission and receiving circuit 14a or the link interference in the radio transmission path 4 and can not the synchronization of radio frame time, radio frame synchronous circuit 15a can produce link and disconnect alarm signal 55a and export it.
Signal extracting circuit 18a can extract LAN transmission of data signals 60a from received frame signal 58a, and to lan signal terminating circuit 11a output LAN transmission of data signals 60a.
The other side's website link information extracts circuit 16a can be extracted in generation and multiplexing link disconnection transfer signal 54b among the radio transmission facility 1b from the overhead area of received frame signal 58a, and can disconnect information 53a to the other side's website link that controlling links circuit 19a output is produced.
The reception of the other side's website disturbs alarm signal to extract circuit 17a can be extracted in generation and multiplexing link disconnection transfer signal 55b among the radio transmission facility 1b from the overhead area of received frame signal 58a, can produce the other side's website interfere information 59a, and can be to controlling links circuit 19a output the other side website interfere information 59a.
After this, with the operation of describing in detail according to the radio transmission facility of the embodiment of the invention, promptly be used for the method for the interference in notification transmission path.
Fig. 4 shows embodiments of the invention.In Fig. 4, radio transmission facility 1a and 1b are by radio transmission path 3 and 4 toward each other.Network equipment 0a links to each other with radio transmission facility 1a by Wired transmission path 2a, and network equipment 0b links to each other with radio transmission facility 1b by Wired transmission path 2b.Simultaneously, the link definition from radio transmission facility 1a to radio transmission facility 1b is a up link, and the link definition from radio transmission facility 1b to radio transmission facility 1a is a down link.In addition, radio transmission facility 1a and radio transmission facility 1b shown in Figure 4 have internal structure shown in Figure 2.
The operation of the radio transmission path in the time of will being described in detail in Wired transmission path 2a and 2b and being in the state that is established as the link that has data link layer respectively and in the radio transmission path 4 of down link, link interference occurring with reference to figure 2 and 4.
In Fig. 2, when link interference occurring in radio transmission path 4, the radio frame synchronous circuit 15a of radio transmission path 1a can receive unusual radio reception signal 57a from wireless radio transmission and receiving circuit 14a.In this case, radio frame synchronous circuit 15a can determine that link is unusual, and can disconnect alarm signal 55a to controlling links circuit 19a and radio frame multiplex circuit 13a output link.Disconnect alarm signal 55a if receive link, then controlling links circuit 19a can produce compulsion links disconnection control signal 61a, so that disconnect control signal 61a to lan signal terminating circuit 11a notice compulsion links.Disconnect control signal 61a if receive compulsion links, then lan signal terminal equipment 11a can force to disconnect the data link of Wired transmission path 2a.Thus, on the transmission path between network equipment 0a and the network equipment 0b, there is interference, comprises by radio transmission path 3 and 4 to network equipment 0a and network equipment 0b notice.
Radio frame multiplex circuit 13a can disconnect alarm signal 55a to produce radio transmissioning signal 56a by the multiplexing link that receives in the overhead area of radio frame, and can pass through receiving circuit 14a and radio transmission path 3, transmit radio transmissioning signal 56a to the other side's radio transmission facility 1b.
The other side's website of radio transmission facility 1b receive disturb alarm signal to extract circuit 17b can be from the received frame signal 58b that receives by wireless radio transmission and receiving circuit 14b and radio frame synchronous circuit 15b, the link that is extracted in down link multiplexing among the radio frame multiplex circuit 13a disconnects information 55a, disturb alarm signal 59b to produce the other side's website, and can disturb alarm signal 59b to the other side's website that controlling links circuit 19b output is produced.Disturb alarm signal 59b if receive the other side's website that is produced, then controlling links circuit 19b can produce compulsion links disconnection control signal 61b, and disconnects control signal 61b to lan signal terminating circuit 11b notice compulsion links.Lan signal terminating circuit 11b can receive the data link that compulsion links disconnects control signal 61b and forces to disconnect Wired transmission path 2b.Thus, exist in to network equipment 0b notice and disturb by transmission path radio transmission path 3 and 4 configurations, between network equipment 0a and the network equipment 0b.
As mentioned above, under the situation that in by the up link 3 of the radio transmission path in transmission path radio transmission path 1a and 1b configuration, between network equipment 0a and the network equipment 0b or in the down link 3 any, occurs disturbing, can to the network equipment that the radio transmission facility that disturbs links to each other wherein occurred receiving and notify this interference.In addition, can also notify this interference to the network equipment that links to each other with radio transmission facility on the rightabout link that wherein occur to receive disturbs.
At the next position, to be described in does not below have link interference and Wired transmission path 2a and 2b to be established as under the state of the link in the data link layer that has among Fig. 4 between radio transmission path 3 and 4, occur connecting the operation of interference and the radio transmission facility when Wired transmission path 2a has broken data path in Wired transmission path 2a.Time when simultaneously, having set up the link of data link in Wired transmission path 2b should be longer than the protection timer circuit 201 that comprises transmission protective circuit 12a shown in Figure 3 and be disconnected time when having output masking signal 203 in the predetermined guard time that information 53a begins from discharging the other side's website link.
In Fig. 2,, then can produce self website link and disconnect information 52a and output to transmission protective circuit 12a if the data link that the lan signal terminating circuit 11a of radio transmission facility 1a can detect among the Wired transmission path 2a disconnects.At this moment, owing to discharging the other side's website link over and done with predetermined guard time after disconnecting information 53a, so protect timer circuit 201 not export masking signal 203.If detect self website link disconnection information 52a, then shift masking circuit 202 and can produce link disconnection transfer signal 54a immediately, and it is outputed to radio frame multiplex circuit 13a.
The other side's website link information of radio transmission facility 1b extracts circuit 16b can be from the received frame signal 58b that receives by wireless radio transmission and receiving circuit 14b and radio frame synchronous circuit 15b; be extracted in link multiplexing among the radio frame multiplex circuit 13a of radio transmission facility 1a and disconnect transfer signal 54a, disconnect information 53b and disconnect information 53b to controlling links circuit 19b the other side's website link that output is produced with transmission protective circuit 12b to produce the other side's website link.Disconnect information 53b if receive the other side's website link, then controlling links circuit 19b can produce compulsion links disconnection control signal 61b, and the compulsion links that is produced to lan signal terminating circuit 11b output disconnects control signal 61b.
Disconnect control signal 61b if receive compulsion links, then lan signal terminating circuit 11b can disconnect the data link of Wired transmission path 2b forcibly.Thus, between by radio transmission path 3 and 4 network equipment 0a that constitute and the network equipment 0b interference has appearred to network equipment 0b notice.
In this case; after lan signal terminating circuit 11b can detect the link disconnection of the Wired transmission path 2b that occurs owing to compulsion links disconnection control; produce self website link disconnection information 52b; then, self the website link that is produced is disconnected information 52 and be notified to transmission protective circuit 12b.Yet; because transmission protective circuit 12b has extracted from the other side's website link information and has received the other side's website link disconnection information 53b the circuit 16b; therefore, even receive self website link disconnection information 52b, transmission protective circuit 12b not output link disconnects transfer signal 54b.
Therefore, the other side's website link information of radio transmission facility 1b extracts circuit 16a and can receive received frame signal 58a from radio transmission facility 1b by wireless radio transmission and receiving circuit 14a and radio frame synchronous circuit 15a.Yet, from received frame signal 58a, do not detect the other side's website link and disconnect information 53a.Therefore, even link breaks at Wired transmission path 2b, but controlling links circuit 19a can not disconnect control signal 61a at output compulsion links under precondition.
At the next position, the situation of the connection interference that recovers Wired transmission path 2a from above-mentioned state will be described below.The controlling links circuit 19a of radio transmission facility 1a does not export compulsion links and disconnects control signal 61a.Therefore, disturb, then set up data link if recover the connection of Wired transmission path 2a.After the foundation that detects data link, lan signal terminating circuit 11a can discharge self website link disconnection information 52a.
Transmission protective circuit 12a can detect the release that self website link disconnects information 52a; and can discharge link and disconnect transfer signal 54a, and should discharge by radio frame multiplex circuit 13a and wireless radio transmission and receiving circuit 14a and be notified to radio transmission facility 1b.The other side's website link information of radio transmission facility 1b extracts circuit 16b can receive received frame signal 58b by wireless radio transmission and receiving circuit 14b and radio frame synchronous circuit 15b, and can extract the other side's website link disconnection information 53b from received frame signal 58b.
The other side's website link that extracts detecting disconnects after the release of information 53b, and the other side's website link information extracts circuit 16b can discharge the other side's website link disconnection information 53b.After the release that receives the other side's website link disconnection information 53b, controlling links circuit 19b can discharge compulsion links and disconnect control signal 61b.
If receive the release that compulsion links disconnects control signal 61b, then lan signal terminating circuit 11b can set up the link of Wired transmission path 2b, and recovers this link.In this case,, set up the link of Wired transmission path 2b, and time interference (time rug) occurred, till self website link disconnects information 52b and discharges discharging after the other side's website link disconnects information 53b.Yet the protection timer circuit 201 of transmission protective circuit 12b protects the other side's website link to disconnect the release of information 53b in the given time, and then, protection timer circuit 201 can discharge masking signal 203.Therefore, can prevent that link from disconnecting the output of transfer signal 54b, discharge Wired transmission path 2b simultaneously and discharge self website link disconnection information 52b reliably.Simultaneously, the scheduled time should be longer than the time required up to Wired transmission path has been set up link in data link layer till.
Occur connecting under the situation about disturbing in network equipment 0a that relative radio transmission facility 1a and 1b constitute in by radio transmission path shown in Figure 4 and the Wired transmission path 2a in the transmission path between the network equipment 0b or among the Wired transmission path 2b any, transmit this interfere information by radio transmission facility, and force to discharge the data link that the Wired transmission path of interference wherein occurs, therefore, can come the unusual of notification transmission path by being disconnected to the link of the network equipment that links to each other with the Wired transmission path that does not wherein occur disturbing.
In addition; shelter the transfer that self website link disconnects information by utilizing that transmit and the other side's website link disconnection information that from the received frame signal, extract from the other side's website; and by the release side that disconnects information at and the other side's website link that from the received frame signal, extract that transmit guard time is set, can prevents to circulate between radio transmission facility by described radio transmission path by control link, that disconnect the link of the Wired transmission path that links to each other with self website that disconnects the Wired transmission path that links to each other with the other side's website from the other side's website.
At the next position, other embodiment of various details.According to the foregoing description,, the method for multiplex link information in the overhead area of himself radio frames has been described as the method that transmits link information to the other side's radio transmission facility.Present embodiment is not limited to the method for multiplex link information in the overhead area of radio frame, but for example, have produce and the radio transmission facility of the function of termination SDH signal in, can multiplex link information, and it is transferred to the overhead area of SDH.In this case, the radio frame multiplex circuit in the method for multiplex link information is substituted by the SDH multiplexing circuit in the overhead area of radio frame.
In addition, for example, as shown in Figure 5, present embodiment can also be applied to repeater 401 and be arranged on structure between radio transmission facility 1a and the 1b.
According to the present invention, although radio transmission facility and with the network equipment that described radio transmission facility links to each other between Wired transmission path in set up link, but can evade following state: because radio transmission facility and by radio transmission path relative, with the network equipment that described radio transmission facility links to each other between the interference of radio transmission path, can not normally transmit lan signal.
This is because the present invention has following function: when in any of the radio transmission path of the radio transmission path of up link and down link, detecting link interference, force to disconnect at the data link of the network equipment that links to each other by two relative radio transmission facilities of radio transmission path.
In addition, according to the present invention, can evade following problem: when any link of disconnecting respectively with the radio transmission path that links to each other by two relative radio transmission facilities of radio transmission path, the network equipment that links to each other with relative radio transmission facility can not be discerned the disconnection of transmission path.
This is owing to have a following function: when disconnecting respectively with any of the link of the network equipment that links to each other by the relative radio transmission facility of radio transmission path, disconnect the data link of the Wired transmission path that links to each other with relative radio transmission facility.
According to the present invention, if any of the link of the network equipment that relative with the passing through radio transmission path respectively radio transmission facility of disconnection links to each other, then can evade following problem: two websites force to disconnect the link of self website mutually, and the disconnection of the data link of the Wired transmission path that links to each other by control and relative radio transmission facility can not recover normal condition.
This is because two websites all have protective circuit; if utilize the link disconnection information of detected relative website to detect the disconnection of data link of the Wired transmission path of self website, the link that then stops to transmit to the other side's website self website disconnects information.
According to the present invention, can evade following problem: by disconnect from the compulsion links that discharges self website control the time be carved into time difference that the moment produced of the link of having set up self website, the link of alternately realizing two websites disconnects control, and therefore, turning back to the process of normal condition from the state that cuts off the data link of the Wired transmission path that links to each other with self website according to the disconnection of the link of the transmission path that links to each other with the other side's website, two websites all can not turn back to normal condition.
This be since when the disconnection according to the link of the Wired transmission path that links to each other with the other side's website come that force disconnect links to each other with self website the link of Wired transmission path the time, protective circuit has from the link of setting up the other side's website up to by stopping to become predetermined guard time till available of transmission that link disconnection information to the other side's website transmission self website makes the link disconnection information of self website.
Claims (11)
1. radio transmission facility, link to each other with the other side's radio transmission facility with down link by up link, and link to each other with the network equipment of himself website by himself Wired transmission path, described up link is the link from self radio transmission facility to the other side's radio transmission facility, described down link is the link from described the other side's radio transmission facility to described self radio transmission facility, and described self radio transmission facility comprises:
The radio frame synchronous circuit is used for when owing to having occurred receiving unusual radio reception signal as the unusual link interference of link at down link the disconnection alarm signal of output down link;
The controlling links circuit is used to utilize the reception of the disconnection alarm signal of down link, produces and the notice compulsion links disconnects control signal; And
The lan signal terminating circuit is used to receive compulsion links and disconnects control signal, forces to disconnect the data link of self Wired transmission path, and the interference that occurs in the network equipment notice down link of self website.
2. radio transmission facility according to claim 1 also comprises:
The radio frame multiplex circuit, the overhead area that is used for being multiplexed into by the disconnection alarm signal with down link radio frame produces radio transmissioning signal, and transmits radio transmissioning signal by up link to the other side's radio transmission facility; And
The remote station spot net equipment that the other side's radio transmission facility in the up link that also interference is notified to and occur to receive disturbs therein links to each other;
If occur in the up link disturbing, disconnect information from the link that the other side's radio transmission facility sends up link by down link:
Wherein said self radio transmission facility also comprises:
The other side's website receives and disturbs alarm signal to extract circuit, from sending from the other side's radio transmission facility and the other side's website received frame signal of receiving by the radio frame synchronous circuit, the link that extracts up link disconnects information, as the other side's website interfere information;
After receiving the other side's website interfere information, the controlling links circuit produces and the output compulsion links disconnects control signal; And
The lan signal terminating circuit receives compulsion links and disconnects control signal, forces to disconnect the data link of self Wired transmission path, and to the interference of the network equipment informing uplink of himself website.
3. radio transmission facility according to claim 2 also comprises:
The transmission protective circuit is used to detect self website link disconnection information; And
Disturb and disconnect under the situation of the data link in described self Wired transmission path if in self Wired transmission path, occur connecting, the lan signal terminating circuit that links to each other with self Wired transmission path detects the disconnection of the data link in described self Wired transmission path, and then the lan signal terminating circuit produces and exports self website link and disconnects information; And
If the transmission protective circuit receives self website link disconnection information, then transmit protective circuit and produce link disconnection transfer signal, and disconnect transfer signal to radio frame multiplex circuit output link.
4. radio transmission facility according to claim 3, disturb if wherein in the other side's Wired transmission path, occurred connecting, then send the other side's website link and disconnect transfer signal from the other side's radio transmission facility, disconnect the data link in the other side's Wired transmission path, and described self radio transmission facility comprises also:
The other side's website link disconnects the information extraction circuit, from the other side's radio transmission facility and the other side's website received frame signal of receiving by the radio frame synchronous circuit, extract the other side's website link and disconnect transfer signal from sending, disconnect information to produce the other side's website link, and export described the other side's website link disconnection information to controlling links circuit and transmission protective circuit; And
The controlling links circuit receives the other side's website link and disconnects information, and produce compulsion links and disconnect control signal, and export described compulsion links disconnection control signal to the lan signal terminating circuit, and
The lan signal terminating circuit receives compulsion links and disconnects control signal, forces to disconnect the data link of described self Wired transmission path, and to the network equipment informing uplink of self website and the interference in the down link.
5. radio transmission facility according to claim 4 is characterized in that:
When the transmission protective circuit detects that the other side's website link disconnects information and when from discharging the other side's website link disconnection information also not when being scheduled to guard time, the transmission protective circuit produces and shifts masking signal, disconnects the output of transfer signal so that prevent link; And
After over and done with described predetermined guard time, described transmission protective circuit stops to shift the output of masking signal.
6. radio transmission facility according to claim 5 is characterized in that:
Described transmission protective circuit has the transfer masking circuit, is used to detect self website link and disconnects information, generation and disconnect transfer signal to radio frame multiplex circuit output link; And
The protection timer circuit has the function that masking signal is shifted in output.
7. radio transmission facility according to claim 6 is characterized in that:
Disturb if recovered the connection of described self Wired transmission path, then set up the data link of self Wired transmission path; And
The foundation of the data link of lan signal terminating circuit detection self Wired transmission path is to discharge self website link disconnection information; And
The release that transmission protective circuit detection self website link disconnects information disconnects transfer signal to discharge link, and by radio frame multiplex circuit and up link it is notified to the other side's website radio transmission facility.
8. radio transmission facility according to claim 7 is characterized in that:
The other side's website link disconnects the information extraction circuit and receives the other side's website received frame signal by the radio frame synchronous circuit, disconnect information so that from the other side's website received frame signal, extract the other side's website link, and the release of detection notice disconnects information to discharge the other side's website link; And
The controlling links circuit discharges compulsion links and disconnects control signal when receiving the release of the other side's website link disconnection information; And
The lan signal terminating circuit receives release that compulsion links disconnects control signal to set up the link of self Wired transmission path.
9. radio transmission facility according to claim 1 is characterized in that between described self radio transmission facility and the other side's radio transmission facility repeater being set.
10. SDH radio transmission facility, link to each other with the other side's radio transmission facility with down link and link to each other with the network equipment of himself website by up link by himself Wired transmission path, described up link is the link from self radio transmission facility to the other side's radio transmission facility, described down link is the link from described the other side's radio transmission facility to described self radio transmission facility, and described SDH radio transmission facility comprises:
The radio frame synchronous circuit if link interference occurred and receive unusual radio reception signal in down link, is used for determining as the unusual link interference of link, and the disconnection alarm signal of output down link;
The controlling links circuit if receive the disconnection alarm signal of down link, then produces and notifies pressure disconnection control signal; And
The lan signal terminating circuit disconnects control signal if receive compulsion links, is used to force to disconnect the data link of self Wired transmission path, and occurs disturbing in down link to the network equipment notice of self website.
11. SDH radio transmission facility according to claim 10 also comprises:
The SDH multiplexing circuit is used for producing radio transmissioning signal by the disconnection alarm signal at the overhead area multiplexed downlink of SDH, and transmits described radio transmissioning signal by up link to the other side's radio transmission facility; And
The remote station spot net equipment that the other side's radio transmission facility in the up link that also described interference is notified to and occur to receive disturbs therein links to each other.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004019323 | 2004-01-28 | ||
| JP2004019323A JP2005217565A (en) | 2004-01-28 | 2004-01-28 | Wireless transmission apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1652525A CN1652525A (en) | 2005-08-10 |
| CN100563192C true CN100563192C (en) | 2009-11-25 |
Family
ID=34309312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510007001XA Expired - Fee Related CN100563192C (en) | 2004-01-28 | 2005-01-28 | Radio transmission facility |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2005217565A (en) |
| CN (1) | CN100563192C (en) |
| GB (1) | GB2411081B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384284C (en) * | 2005-10-11 | 2008-04-23 | 上海华为技术有限公司 | Method for realizing link audit |
| JP2008085928A (en) * | 2006-09-29 | 2008-04-10 | Daihen Corp | Method for monitoring abnormality in information monitoring system |
| EP2395789A4 (en) | 2009-02-03 | 2015-09-30 | Nec Corp | Wireless transmission method and wireless transmission device |
| WO2011062216A1 (en) * | 2009-11-18 | 2011-05-26 | 日本電気株式会社 | Relay device, relay method, and program |
| JP5375625B2 (en) * | 2010-01-18 | 2013-12-25 | 三菱電機株式会社 | Relay communication device and communication control method |
| EP2544423A4 (en) | 2010-03-01 | 2016-11-30 | Nec Corp | Transmission device, transmission method, and transmission system |
| EP2634976A4 (en) * | 2010-10-28 | 2016-11-30 | Nec Corp | Transmission device, transmission system, and fault notification method |
| EP2779732B1 (en) * | 2011-11-11 | 2017-01-04 | NEC Corporation | Wireless transmission device, failure-information forwarding method, and failure-information notification method |
| US10461995B2 (en) | 2015-07-14 | 2019-10-29 | Nec Corporation | Wireless transmission device, fault notification method, and program |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60214645A (en) * | 1984-04-10 | 1985-10-26 | Nec Corp | Mobile radio communication system |
| FI97263C (en) * | 1994-10-26 | 1996-11-11 | Nokia Telecommunications Oy | Procedure for eliminating the influence of noise frames and a base station |
| JP3569127B2 (en) * | 1998-04-20 | 2004-09-22 | 富士通株式会社 | SDH wireless transmission device |
| JP3575419B2 (en) * | 2000-10-24 | 2004-10-13 | 日本電気株式会社 | Apparatus state control circuit and apparatus state control method |
-
2004
- 2004-01-28 JP JP2004019323A patent/JP2005217565A/en active Pending
-
2005
- 2005-01-28 CN CNB200510007001XA patent/CN100563192C/en not_active Expired - Fee Related
- 2005-01-28 GB GB0501817A patent/GB2411081B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| GB0501817D0 (en) | 2005-03-09 |
| GB2411081A (en) | 2005-08-17 |
| GB2411081B (en) | 2006-04-05 |
| JP2005217565A (en) | 2005-08-11 |
| CN1652525A (en) | 2005-08-10 |
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Granted publication date: 20091125 Termination date: 20180128 |